CN108652516B

CN108652516B - Dust collector

Info

Publication number: CN108652516B
Application number: CN201810807220.3A
Authority: CN
Inventors: 陆为东; 桑树华; 柳晓宇
Original assignee: Suzhou Alton Electrical and Mechanical Industry Co Ltd
Current assignee: Suzhou Alton Electrical and Mechanical Industry Co Ltd
Priority date: 2018-07-21
Filing date: 2018-07-21
Publication date: 2023-12-29
Anticipated expiration: 2038-07-21
Also published as: CN108652516A

Abstract

A dust collector comprises a dust collecting container, an external air inlet, a sealing valve for sealing the external air inlet when the sealing valve is in a sealing position, a valve rod capable of moving the sealing valve away from the sealing position, and a solenoid module for generating electromagnetic driving force for the valve rod, wherein the solenoid module is provided with a through channel which penetrates through the solenoid module and can guide the valve rod to move, the valve rod at least partially penetrates through the through channel, the valve rod is provided with an initial position, an end-of-travel position and a valve opening position between the initial position and the end-of-travel position, the valve rod is at least partially positioned in the through channel when the valve rod is in any position between the initial position and the end-of-travel position, the valve rod is separated from the sealing valve in the initial position, the valve rod can be contacted with the sealing valve in the sealing position when moving from the initial position to the end-of-travel position, and the sealing valve rod can be moved away from the sealing position, so that the guidable impact valve opening of the sealing valve rod to the sealing valve is realized.

Description

Dust collector

[ field of technology ]

The present invention relates to a vacuum cleaner.

[ background Art ]

The utility model provides a dust catcher is cleaning equipment commonly used, possess the function of separating rubbish such as dust, piece from the air, the valve opening mechanism of current dust catcher usually includes solenoid module and valve rod, the valve rod is in the same place with the sealing valve, solenoid module after the circular telegram produces electromagnetic driving force to the valve rod, drive valve rod motion, the valve rod drives the sealing valve that links at the valve rod and removes the valve of opening or close, so design, the valve rod is from stationary to the motion together with the sealing valve, equal to start together, the requirement of the startability to the valve rod is too high, be unfavorable for opening the sealing valve.

[ invention ]

The invention provides a dust collector with a valve rod and an impact valve which can guide a closed valve.

In order to solve the technical problems, the invention adopts the following technical scheme: a vacuum cleaner comprises a dust collecting container, an external air inlet, a sealing valve for sealing the external air inlet when the sealing valve is in a sealing position, a valve rod capable of moving the sealing valve away from the sealing position, and a solenoid module for generating electromagnetic driving force for the valve rod, wherein the solenoid module is provided with a through channel which penetrates through the solenoid module and can guide the valve rod to move, the valve rod at least partially penetrates through the through channel, the valve rod is provided with an initial position, an end-of-travel position and a valve opening position between the initial position and the end-of-travel position, the valve rod is at least partially positioned in the through channel when the valve rod is in any position between the initial position and the end-of-travel position, the valve rod is separated from the sealing valve in the initial position, the valve rod can be contacted with the sealing valve in the sealing position when the valve rod moves to the valve opening position, and the valve rod impacts the sealing valve and moves from the sealing position when the valve rod moves from the initial position to the end-of-travel position.

In the scheme, the valve rod is separated from the closed valve at the initial position, the valve rod moves in advance from the initial position under electromagnetic drive and through channel guide instead of being started together with the closed valve, the moving valve rod can generate larger impact on the closed valve, and the guidable impact valve opening of the valve rod to the closed valve is realized based on the dual functions of driving and guiding the valve rod to move by the electromagnetic coil module.

Further, the valve stem includes a first end that is always located outside of the solenoid module, the valve stem first end being located on opposite sides of the solenoid module from the closed valve, the first end being further from the solenoid module when the valve stem is in the initial position relative to the valve stem in the open valve position and the end-of-travel position. By the design, the electromagnetic driving force effect of the electromagnetic coil module on the valve rod can be improved, and the impact force of the valve rod is improved.

Further, the dust collector further comprises a first elastic piece used for keeping the valve rod at the initial position, the first elastic piece is sleeved on the valve rod, the first elastic piece is located between the electromagnetic coil module and the first end of the valve rod, and one end of the first elastic piece is propped against the electromagnetic coil module. So designed, the first elastic piece with one end propped against the electromagnetic coil module effectively limits the position of the valve rod relative to the electromagnetic coil module.

Further, the valve rod is provided with a flange positioned outside the electromagnetic coil module, the first elastic piece is pressed between the electromagnetic coil module and the flange, and the first elastic piece is a spring with the radial size gradually reduced from the middle to the two ends. The first elastic piece is similar to a spindle shape, so that the pressing height of the first elastic piece can be reduced.

Further, the valve stem includes a second end opposite the first end, the second end of the valve stem being positioned within the solenoid module through passage when in the initial position, the second end of the valve stem being positioned outside the solenoid module and the first and second ends being positioned on opposite sides of the solenoid module when in the end-of-travel position.

Further, the valve rod is provided with a magnetizable section which can be magnetized by the electromagnetic coil module, a non-magnetizable section which cannot be magnetized by the electromagnetic coil module, the magnetizable section and the non-magnetizable section are fixed together, the magnetizable section is positioned between the non-magnetizable section and the closed valve, the magnetizable section is provided with a head end and a tail end which are opposite in the movement direction of the valve rod, the tail end is positioned between the non-magnetizable section and the head end, when the valve rod is in an initial position, the non-magnetizable section is at least partially positioned in the electromagnetic coil module, and when the valve rod is in an end-of-stroke position, the non-magnetizable section is at least partially positioned outside the electromagnetic coil module. The design is favorable to the more effectual drive valve rod of solenoid module, does benefit to the reinforcing to the impact of closed valve through setting up non-magnetizable section, if non-magnetizable section is replaced and is magnetizable, then leads to the valve rod to be close more on the whole for solenoid module's equilibrium position, can reduce the total drive energy of solenoid module to the valve rod in the valve rod stroke, leads to the impact force of valve rod to reduce.

Further, the center position of the magnetizable segment between the opposite ends of the electromagnetic coil module through passage in the valve stem movement direction is always located between the center position of the electromagnetic coil module through passage between the opposite ends of the magnetizable segment in the valve stem movement direction and the closing valve, or the center position of the magnetizable segment between the opposite ends of the magnetizable segment in the valve stem movement direction overlaps the center position of the electromagnetic coil module through passage between the opposite ends of the electromagnetic coil module through passage in the valve stem movement direction when the valve stem is at the stroke end position. The design basically ensures that the magnetizable segment always does not cross the balance position relative to the electromagnetic coil module, and the electromagnetic coil module electrified in the downward movement process of the magnetizable segment is caused to generate electromagnetic driving force in the direction along the movement direction, so that the valve rod has larger impact capability.

Further, the head end of the magnetizable segment is positioned on the opposite sides of the electromagnetic coil module from the closed valve, the head end of the magnetizable segment is always positioned outside the electromagnetic coil module, the tail end of the valve rod is positioned outside the electromagnetic coil module and on the opposite sides of the electromagnetic coil module from the head end when the valve rod is at the stroke end position, and the distance of the tail end of the valve rod exceeding the electromagnetic coil module in the movement direction of the valve rod is smaller than the distance of the head end exceeding the electromagnetic coil module when the valve rod is at the stroke end position. The design can basically ensure that the electromagnetic driving force received by the magnetizable section is consistent with the movement direction of the magnetizable section in the process of moving the valve rod to the stroke end position, thereby ensuring that the valve rod has larger impact capability.

Further, when the valve rod is in the initial position, the tail end is positioned in the electromagnetic coil module.

Further, the non-magnetizable segment is located entirely within the solenoid module when the valve stem is in the initial position.

Further, the magnetizable segment is arranged coaxially with the non-magnetizable segment.

Further, the non-magnetizable segment may be in contact with the closure valve in the closed position when the valve stem is moved to the open position, the valve stem being moved away by the non-magnetizable segment impacting the closure valve.

Further, the magnetizable section is provided with a mounting hole extending from the tail end into the magnetizable section, the non-magnetizable section is fixed in the mounting hole, the mounting hole is provided with internal threads, and the non-magnetizable section is provided with external threads in threaded connection with the internal threads.

Further, the magnetizable section and the non-magnetizable section are respectively columns, the magnetizable section is an iron column or a steel column or a column containing more than half of iron, the non-magnetizable section is a copper column or an aluminum column or a copper-aluminum alloy column or a plastic column,

further, the dust collector also comprises a filtering device for filtering dirty air and a second elastic piece for keeping the sealing valve at the sealing position, wherein the second elastic piece is always in a compressed state between the filtering device and the sealing valve, and the valve rod can overcome the elastic force of the second elastic piece to move the sealing valve away from the sealing position.

Further, the second elastic element is a spring, and when the valve rod moves to the stroke end position, the second elastic element is in a pressed state, and the closed valve forms impact on the filtering device by the pressed second elastic element.

Further, the filtering device comprises a tray and a filter arranged on the tray, one end of the second elastic piece is propped against the tray, the other end of the second elastic piece is propped against the sealing valve, and when the valve rod moves to the stroke end position, the sealing valve impacts the tray through the pressed second elastic piece.

Further, the filter device comprises a tray and a filter arranged on the tray, the tray is provided with an exhaust opening, air filtered by the filter flows through the exhaust opening, one end of the second elastic piece is propped against the tray, and the other end of the second elastic piece is propped against the sealing valve.

Further, the tray is further provided with a biasing portion biased to one side of the tray, the second elastic piece is located between the sealing valve and the biasing portion, and one end of the second elastic piece is pressed against the biasing portion.

Further, the tray is provided with at least one ventilation opening spaced from the suction opening, and when the filter is cleaned, air can sequentially pass through the opened external air inlet and ventilation opening and be applied to the surface of the filter, which is opposite to the dust collection container.

Further, the dust collector also comprises a motor for providing suction power, the tray is further provided with a main body part, the offset part is offset on one side of the main body part and is integrally formed with the main body part, the air suction opening is formed in the main body part, the motor is positioned on the upper side of the tray, the filter is positioned on the lower side of the tray, and the filter is cylindrical.

Further, the ventilation opening is located between the air suction opening and the second elastic piece.

Further, the dust collector further comprises a first chamber, the second elastic piece is located in the first chamber, the external air inlet forms an air inlet of the first chamber, the ventilation opening forms an air outlet of the first chamber, and the offset part is spaced between the first chamber and the inner space of the dust collecting container.

Further, the offset portion is equipped with the diapire, encircles the first frame of second elastic component, and the dust catcher still includes the roof opposite with the diapire, encircles the second frame of second elastic component, and first frame, second frame are located respectively between diapire and the roof, and outside air inlet is located the roof, and the vent is seted up in the diapire, and diapire, first frame, roof, second frame enclose into first cavity.

Further, the tray is provided with a third frame surrounding the first frame, a matching groove surrounding the second elastic piece is formed between the first frame and the third frame at intervals, and the second frame is assembled into the matching groove.

Further, the dust collector further comprises a second elastic element, a tray and a filter, wherein the second elastic element is used for keeping the sealing valve at a sealing position, the filter is arranged on the tray, the second elastic element is a spring, the second elastic element is always in a compressed state between the tray and the sealing valve, the tray is provided with an exhaust opening, air filtered by the filter flows through the exhaust opening, one end of the second elastic element is propped against the tray, and when the valve rod moves to a stroke end position, the second elastic element is in a pressing state and the sealing valve impacts the tray through the pressing second elastic element.

Further, the dust collector further comprises a second elastic element, a tray and a filter, wherein the second elastic element is used for keeping the sealing valve at a sealing position, the filter is arranged on the tray, the second elastic element is a spring, the second elastic element is always in a compressed state between the tray and the sealing valve, the tray is provided with an exhaust opening, air filtered by the filter flows through the exhaust opening, the tray is provided with a biasing part biased at one side of the tray, the second elastic element is positioned between the sealing valve and the biasing part, one end of the second elastic element is propped against the biasing part, and when the valve rod moves to a stroke end position, the second elastic element is in a compressed state and the sealing valve impacts the biasing part through the compressed second elastic element.

Further, the dust collector further comprises a first elastic piece used for keeping the valve rod at an initial position, and a first cover body used for covering the valve rod and the first elastic piece, wherein the first elastic piece is sleeved on the valve rod, the first cover body is provided with a sleeve part surrounding the valve rod and the first elastic piece, a plurality of mounting support legs, and a first air inlet which is in fluid communication with an external air inlet is formed between every two adjacent mounting support legs.

Further, the cleaner also includes a motor for providing suction power, a second housing for housing the first housing, the second housing having a second air inlet in fluid communication with the first air inlet.

Further, the dust collector also comprises a machine head shell, the first cover body, the second cover body and the electromagnetic coil module are positioned in the machine head shell, the machine head shell is provided with a handle and a ventilation window for moving the dust collector, and air can flow to the external air inlet through the ventilation window, the second air inlet and the first air inlet in sequence.

In the dust collector, further, the electromagnetic driving force direction of the electromagnetic coil module to the valve rod is consistent with the running direction of the valve rod in the process from the initial position to the stroke end position of the valve rod.

The vacuum cleaner further comprises a valve rod comprising a first end and a second end opposite to each other, the second end being located between the first end and the sealing valve, the sealing valve being located between the valve rod and the filter device, the valve rod pushing the sealing valve towards the filter device through the second end.

Further, the dust collector also comprises a tray and a filter arranged on the tray, and when the valve rod moves to the stroke end position, the sealing valve is contacted with the tray and impacts the tray.

The vacuum cleaner further comprises a biasing part which is biased at one side of the tray, and when the valve rod moves to the stroke end position, the sealing valve is contacted with the biasing part and impacts the biasing part.

In the vacuum cleaner, the closing valve is further provided with a protruding part protruding in a direction away from the valve rod, and when the valve rod moves to the stroke end position, the protruding part contacts with the tray and impacts the tray.

These features and advantages of the present invention will be disclosed in detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a perspective view of a vacuum cleaner of the present invention;

figure 2 is a perspective view of the cleaner of the present invention with the head housing removed;

FIG. 3 is a perspective view of the cleaner of the present invention with the head housing and the second housing removed;

figure 4 is a longitudinal cross-sectional view of the vacuum cleaner of the present invention (with the valve stem in the initial position);

FIG. 5 is an enlarged view of a portion of FIG. 4;

FIG. 6 is a perspective view of the bottom cover, the second resilient member and the sealing valve of the present invention in combination;

FIG. 7 is a perspective view of the bottom cover of the cleaner and the tray of the present invention assembled together;

FIG. 8 is a perspective view of the bottom cover, tray and filter of the cleaner of the present invention assembled together;

FIG. 9 is a perspective view of a vacuum cleaner tray of the present invention;

figure 10 is an exploded view of a first resilient member, valve stem, solenoid module, valve seat, closing valve, second resilient member of the vacuum cleaner of the present invention.

[ detailed description ] of the invention

The technical solutions of the embodiments of the present invention will be explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present invention.

Referring to fig. 1 to 10, the cleaner has a dust container 10, a filter device, a float 11, a caster 12 provided at the bottom of the dust container 10, a motor 13 for providing suction power, an impeller (not shown) driven to rotate by the motor 13, an outside air inlet 14, a closing valve 15, a valve stem 2, a solenoid module 3 for driving the valve stem 2, a first elastic member 16 for maintaining the valve stem 2 at an initial position, and a second elastic member 17. The rated power of the motor 13 is between 100w and 3000w, preferably between 200w and 1800w, such as 960w, 1200w, 1320w, 1440w; the capacity of the cleaner or dust container 10 is between 0.5 gallons (1 gallon= 3.785412 liters) and 30 gallons, preferably between 1 gallon and 20 gallons, such as 6 gallons, 9 gallons, 10 gallons, 12 gallons, 14 gallons, 16 gallons.

The closing valve 15 is movable under the drive of the valve rod 2, the closing valve 15 has a closing position, an end-of-stroke position, a valve opening position between the initial position and the end-of-stroke position, the valve rod 2 is movable from the initial position to the end-of-stroke position, specifically, the closing valve 15 is movable from the closing position to the end-of-stroke position under the drive of the valve rod 2; when the closing valve 15 is in the closing position, the external air inlet 14 is closed, the valve rod 2 can move the closing valve 15 away from the closing position to open the external air inlet 14, the electromagnetic coil module 3 is provided with a through channel 30 penetrating the electromagnetic coil module 3, the electromagnetic coil module 3 is cylindrical, and further, the electromagnetic coil module 3 is cylindrical; the valve rod 2 is at least partially arranged through the through channel 30, the valve rod 2 is provided with a magnetizable section 20 which can be magnetized by the electromagnetic coil module 3 and a non-magnetizable section 21 which cannot be magnetized by the electromagnetic coil module 3, the magnetizable section 20 and the non-magnetizable section 21 are fixed together, the magnetizable section 20 is provided with a head end 200 and a tail end 201 which are opposite, the head end 200 and the tail end 201 are opposite in the moving direction of the valve rod 2, and the tail end 201 is positioned between the non-magnetizable section 21 and the head end 200. Based on physical general knowledge, the electromagnetic coil module 3 after being electrified can magnetize the magnetizable section 20 and generate electromagnetic driving force for the magnetizable section 20, but does not generate electromagnetic driving force for the non-magnetizable section 21, because the electromagnetic coil module 3 does not apply electromagnetic driving force for the non-magnetizable section 21, the non-magnetizable sections 21 with different lengths, shapes and the like are basically not changed in size, the changes of the lengths, shapes and the like of the non-magnetizable sections 21 have little influence on the electromagnetic driving force, so the non-magnetizable sections 21 have strong adjustability, the changes of the magnetizable sections 20 can influence greatly and are inconvenient to change randomly, the non-magnetizable sections 21 have better adjustment adaptability relative to the magnetizable sections 20, the non-magnetizable sections 21 are convenient to start from the non-magnetizable sections 21, the non-magnetizable sections 21 are adjusted based on the good adjustment change adaptability of the non-magnetizable sections 21 (the adjustment of the length proportion relation and/or the mass proportion relation of the non-magnetizable sections 21, or the length, the shape and the like of the non-magnetizable sections 21 are adjusted), the development requirement (for example, the electromagnetic driving force and the energy are large, the position of the non-magnetizable sections 21 and the non-magnetizable sections 15) is met, the development requirement is met, the development of the valve rod 2 is convenient, and the development requirement is met, and the development of the valve rod 2 is more convenient.

In the embodiment, the valve rod 2 is driven by the electromagnetic coil module 3 to move downwards from the initial position to the stroke end position, and the valve rod 2 passes through the valve opening position in the moving process; the valve rod 2 is kept at the initial position under the condition that the electromagnetic coil module 3 is not powered on; the closing valve 15 is in the closing position when the valve rod 2 is in the initial position, the closing valve 15 is in a state of being moved from the closing position when the valve rod 2 is in the end-of-travel position, the magnetizable section 20 is not contacted with the closing valve 15 during the movement of the valve rod 2 from the initial position to the end-of-travel position, and the valve rod 2 is moved from the closing valve 15 through the non-magnetizable section 21. The valve rod 2 is moved from the closed position by the closing valve 15 being moved away from the magnetizable section 20 of the opposite ends of the non-magnetizable section 21, and further the valve rod 2 is moved by the closing valve 15 being moved away from the magnetizable section 20 of the opposite ends of the non-magnetizable section 21, in which embodiment the valve rod 2 is moved by the lower end of the non-magnetizable section 21. The non-magnetizable segment 21 is at least partly located inside the solenoid module 3 when the valve stem 2 is in the initial position, and the non-magnetizable segment 21 is at least partly located outside the solenoid module 3 when the valve stem 2 is in the end-of-travel position, such a position arrangement being advantageous for a more efficient driving of the valve stem 2 by the solenoid module 3. The non-magnetizable segment 21 is located completely inside the solenoid module 3 when the valve rod 2 is in the initial position, which is designed to facilitate the valve rod 2 to obtain more driving energy from the solenoid module 3 during the movement towards the end-of-travel position. The valve rod 2 impacts the closing valve 15 during the movement from the initial position to the end-of-travel position and moves the closing valve 15 away from the closing position. The non-magnetisable portion 21 is where the valve stem 2 impacts the closure valve 15.

The non-magnetizable segment 21 is located between the magnetizable segment 20 and the closing valve 15, the middle position between the opposite ends of the magnetizable segment 20 in the moving direction of the valve rod 2 is always located between the middle position of the through-passage 30 of the electromagnetic coil module 3 between the opposite ends of the valve rod 2 in the moving direction and the closing valve 15, or, when the valve rod 2 is at the end-of-travel position, the middle position of the magnetizable segment 20 between the opposite ends of the through-passage 30 of the electromagnetic coil module 3 in the moving direction of the valve rod 2 is overlapped with the middle position of the electromagnetic coil module 3 between the opposite ends of the through-passage 30 of the magnetizable segment 20 in the moving direction of the valve rod 2, so designed that the magnetizable segment 20 is basically ensured not to cross the balance position relative to the electromagnetic coil module 3 all the time, and the electromagnetic driving force direction generated by the electromagnetic coil module 3 energized during the moving of the magnetizable segment 20 to the end-of-travel position of the magnetizable segment 20 is along the moving direction of the valve rod 2, so that the electromagnetic driving force received by the magnetizable segment 20 during the moving from the initial position to the end-of-travel position of the valve rod 2 is basically ensured to be consistent with the moving direction. The head end 200 of the magnetizable segment 20 is always located outside the solenoid module 3, the head end 200 being located on opposite sides of the solenoid module 3 from the closing valve 15. The magnetizable segment 20 is at least partially located in the through-channel 30 in any position of the valve stem 2 between the initial position and the end-of-travel position.

When the valve rod 2 is at the stroke end position, the tail end 201 is positioned outside the electromagnetic coil module 3 and is positioned at two opposite sides of the electromagnetic coil module 3 with the head end 200, and when the valve rod 2 is at the stroke end position, the distance of the tail end 201 exceeding the electromagnetic coil module 3 in the moving direction of the valve rod 2 is smaller than the distance of the head end 200 exceeding the electromagnetic coil module 3, so that the electromagnetic driving force received by the magnetizable section 20 in the moving process of the valve rod 2 to the stroke end position is basically ensured to be consistent with the moving direction, and the valve rod 2 is ensured to have larger impact capability. The tail end 201 is located within the solenoid module 3 when the valve stem 2 is in the initial position.

The magnetizable segment 20 is provided with a mounting hole 202 extending from the tail end 201 into the magnetizable segment 20, the non-magnetizable segment 21 is fixed to the mounting hole 202, the mounting hole 202 is provided with an internal thread, and the non-magnetizable segment 21 is provided with an external thread in threaded engagement with the internal thread. The mounting hole 202 is vertical. The magnetizable section 20 and the non-magnetizable section 21 are respectively cylindrical, the magnetizable section 20 is an iron column or a steel column or a column containing more than half of iron, and the non-magnetizable section 21 is a copper column or an aluminum column or a copper-aluminum alloy column or a plastic column. Magnetizable segment 20 is coaxial with non-magnetizable segment 21. The valve stem 2 pushes the closing valve 15 through the non-magnetizable segment 21. By providing the non-magnetizable segment 21 advantageously enhances the impact on the closing valve 15, if the non-magnetizable segment 21 is replaced by magnetizable, this results in the valve stem 2 as a whole being closer to the equilibrium position relative to the solenoid module 3, which reduces the total driving energy of the solenoid module 3 on the valve stem 2 during the stroke of the valve stem 2, resulting in a reduced impact force on the valve stem 2.

The electromagnetic coil module 3 drives the valve rod 2 by generating electromagnetic driving force to the valve rod 2, the electromagnetic driving force is that the electromagnetic coil module 3 generates acting force to the magnetized valve rod 2, the through channel 30 can guide the valve rod 2 to move, the valve rod 2 is at least partially positioned in the through channel 30 when being at any position between an initial position and a stroke end position, the valve rod 2 is separated from the closed valve 15 when being at the initial position and can be contacted with the closed valve 15 when being moved to the open valve position, the closed valve 15 is moved away from the closed position when being at the stroke end position, in the scheme, the valve rod 2 is separated from the closed valve 15 when being at the initial position, the valve rod 2 moves from the initial position in advance under the guidance of the electromagnetic driving force and the through channel 30 instead of being started together with the closed valve 15, the moving valve rod 2 can generate larger impact to the closed valve 15, and the guidable impact valve opening of the closed valve 15 by the valve rod 2 is realized based on the dual functions of driving and guiding the valve rod 2 to move, thereby providing the guidable impact valve opening cleaner of the closed valve rod 2 to the closed valve 15.

The valve rod 2 comprises a first end 22 and a second end 23 which are opposite, the first end 22 and the second end 23 are opposite in the movement direction of the valve rod 2, the first end 22 is always located outside the electromagnetic coil module 3, the first end 22 of the valve rod 2 and the closing valve 15 are located on two opposite sides of the electromagnetic coil module 3, the first elastic piece 16 is sleeved on the magnetizable section 20, the first elastic piece 16 is located between the electromagnetic coil module 3 and the first end 22 of the valve rod 2, one end of the first elastic piece 16 is abutted against the electromagnetic coil module 3, and the position of the magnetizable section 20 relative to the electromagnetic coil module 3 is effectively limited by the first elastic piece 16 with one end abutted against the electromagnetic coil module 3. The valve rod 2 is provided with a flange 24 positioned outside the electromagnetic coil module 3, the first elastic piece 16 is propped between the electromagnetic coil module 3 and the flange 24, the first elastic piece 16 is a spring with the radial size gradually reduced from the middle to the two ends, the pressure and the height of the first elastic piece 16 can be reduced by designing the valve rod, the first elastic piece 16 is similar to a spindle shape, and the flange 24 is arranged at the first end 22 of the valve rod 2. The side of the electromagnetic coil module 3 facing the first end 22 of the valve rod 2 is provided with an annular groove 31 and an annular convex ring 32, the annular groove 31 and the annular convex ring 32 respectively encircle the valve rod 2, and one end of the first elastic piece 16 is positioned in the annular groove 31 and sleeved on the annular convex ring 32. The valve stem 2 is impacted against the closing valve 15 by the non-magnetizable segment 20 such that the closing valve 15 is moved away.

The magnetizable segment 20 corresponds to an electromagnetic coil core, and according to principles such as physical electromagnetic induction, when the centers of the magnetizable core and the electromagnetic coil are approximately coincident, the core is balanced with respect to the electromagnetic coil, and at this time, the electromagnetic coil has no electromagnetic induction force on the core (i.e., no attraction force or no repulsion force on the core), so that the core has an equilibrium position with respect to the electromagnetic coil, the electromagnetic coil has no electromagnetic driving force on the core, and after the core passes over the equilibrium position with respect to the electromagnetic coil, the electromagnetic induction force is reversed, thereby inhibiting the core from continuing to move away from the equilibrium position; the term magnetizable or non-magnetizable in the present invention is not to be understood as absolutely magnetizable or non-magnetizable under any conditions, and is to be understood as meaning in accordance with common sense, e.g. iron is magnetizable and copper or luer is non-magnetizable. In this embodiment, the following will be described: the first end 22 of the valve rod 2 is the upper end of the valve rod 2, the second end 23 of the valve rod 2 is the lower end of the valve rod 2, the head end 200 of the magnetizable section 20 is the upper end of the magnetizable section 20, the tail end 201 of the magnetizable section 20 is the lower end of the magnetizable section 20, and the lower end of the non-magnetizable section 21 forms the second end 23 of the valve rod 2.

The second end 23 of the valve rod 2 is located in the through passage 30 of the solenoid module 3 when in the initial position, the second end 23 of the valve rod 2 is located outside the solenoid module 3 when in the end-of-travel position, and the first end 22 and the second end 23 are located on opposite sides of the solenoid module 3. The first end 22 of the valve stem 2 is located on opposite sides of the solenoid module 3 from the closing valve 15, and the second end 23 of the valve stem 2 is located between the first end 22 of the valve stem 2 and the tray 4. The second end 23 of the valve stem 2 is substantially flush with one end of the through passage 30 of the solenoid module 3 in the open valve position. The through passage 30 is vertical.

The second elastic member 17 is used to keep the closing valve 15 in the closing position, the second elastic member 17 is always in a compressed state between the filtering device and the closing valve 15, and the valve rod 2 can overcome the elastic force of the second elastic member 17 to move the closing valve 15 from the closing position. The second elastic element 17 is a spring, when the valve rod 2 moves to the stroke end position, the second elastic element 17 is in a pressed state, the pressed second elastic element 17 blocks the closed valve 15, and the impact of the closed valve 15 on the filtering device is conducted to the filtering device through the pressed second elastic element 17; the closing valve 15 is not in contact with the filter device when the closing valve 15 impacts the filter device. The pressed second elastic member 17 can block the movement of the closing valve 15 and the valve stem 2 toward the filter device, but conduct the impact of the closing valve 15 and the valve stem 2 to the filter device.

The filtering device comprises a tray 4 and a filter 50 arranged on the tray 4, one end of a second elastic piece 17 is propped against the tray 4, the other end of the second elastic piece is propped against a sealing valve 15, and when the valve rod 2 moves to the stroke end position, the sealing valve 15 impacts the tray 4 through the pressed second elastic piece 17. The tray 4 is provided with an air suction opening 40, and air filtered by the filter 50 flows through the air suction opening 40; the tray 4 is provided with a biasing portion 41 and a main body portion 42 which are biased to one side of the tray 4, and the second elastic member 17 is interposed between the closing valve 15 and the biasing portion 41, and one end of the second elastic member 17 is pressed against the biasing portion 41. The main body 42 is disc-shaped, the biasing portion 41 is biased to the main body 42 side, the suction port 40 is opened to the main body 42, the suction port 40 is opened to the central region of the disc-shaped main body 42, and the biasing portion 41 is biased to the main body 42 side. The filter device further comprises a disc-shaped end cap 51, the end cap 51 being connected to the lower end of the filter 50. The float 11 is accommodated in the cavity 500 of the filter 50. The biasing portion 41 is integrally formed with the main body portion 42, the motor 13 is located on the upper side of the tray 4, the filter 50 is located on the lower side of the tray 4, and the filter 50 is cylindrical.

The tray 4 is further provided with at least one ventilation opening 43 spaced from the air suction opening 40, the ventilation opening 43 is used for being in fluid communication between the inner cavity 500 of the filter 50 and the external air inlet 14, when the filter 50 is cleaned, air can enter the filter 50 through the opened external air inlet 14 and the ventilation opening 43 in sequence and is applied to the surface of the filter 50 opposite to the dust collection container 10, and compared with the prior art, the design is such that the ventilation opening 43 is additionally arranged on the tray 4, the effect of introducing air from the external air inlet 14 to the surface of the filter 50 opposite to the dust collection container 10 is realized, and the filter 50 is cleaned. The offset portion 41 partially overlaps the main body portion 42, and the vent 43 is provided in an overlapping region of the offset portion 41 and the main body portion 42.

The cleaner further includes a bottom cover 55 covering the dust container 10, and a hood 56 fixed to the bottom cover 55.

The vent 43 is located between the suction opening 40 and the second elastic member 17. The cleaner further includes a first chamber 52, the second elastic member 17 is disposed in the first chamber 52, the external air inlet 14 forms an air inlet of the first chamber 52, the ventilation opening 43 forms an air outlet of the first chamber 52, the biasing portion 41 is spaced between the first chamber 52 and the inner space 101 of the dust container 10, and the filter 50 is accommodated in the inner space 101 of the dust container 10. The vent 43 is in fluid communication between the first chamber 52 and the interior cavity 500 of the filter 50. The offset part 41 is provided with a bottom wall 410, a first frame 411 surrounding the second elastic member 17, and the dust collector further comprises a top wall 53 opposite to the bottom wall 410 and a second frame 54 surrounding the second elastic member 17; the top wall 53 and the second frame 54 are part of the bottom cover 55; the first frame 411 and the second frame 54 are respectively located between the bottom wall 410 and the top wall 53, the external air inlet 14 is located at the top wall 53, the ventilation opening 43 is formed in the bottom wall 410, and the bottom wall 410, the first frame 411, the top wall 53 and the second frame 54 enclose the first chamber 52. The tray 4 is provided with a third rim 412 surrounding the first rim 411, a fitting groove 413 surrounding the second elastic member 17 is formed at a distance between the first rim 411 and the third rim 412, and the second rim 54 is fitted into the fitting groove 413. The second frame 54 is assembled in the matching groove 413 and is attached to the first frame 411 and the third frame 412, so as to seal the periphery of the first chamber 52. The first frame 411, the second frame 54, and the third frame 412 are substantially rectangular, and a portion of the first frame 411, a portion of the third frame 412, and a portion of the fitting groove 413 are located between the ventilation opening 43 and the ventilation opening 40.

The vacuum cleaner further comprises a first cover 18 covering the valve rod 2 and the first elastic member 16, and a second cover 19 covering the first cover 18, wherein the first elastic member 16 is sleeved on the valve rod 2, the first cover 18 is provided with a sleeve part 180 surrounding the valve rod 2 and the first elastic member 16, a plurality of mounting legs 181, and a first air inlet 182 in fluid communication with the external air inlet 14 is formed between the adjacent mounting legs 181. The second housing 19 is provided with a second air inlet (not shown) in fluid communication with the first air inlet 182. The vacuum cleaner further comprises a housing 44, the first cover 18, the second cover 19 and the electromagnetic coil module 3 are arranged in the housing 44, the housing 44 is provided with a handle 440 for moving the vacuum cleaner and a ventilation window 441, and air can flow to the external air inlet 14 through the ventilation window 441, the second air inlet and the first air inlet 182 in sequence. The external air inlet 14 is provided with a valve seat 140, the sealing valve 15 is in sealing fit with the valve seat 140 at a sealing position, and the valve seat 140 is made of flexible materials, such as rubber materials; the closing valve 15 is made of a hard material, such as a plastic material. The second air inlet is located on the side of the second housing 19 facing the motor 13. The sleeve portion 180 has an inner diameter slightly larger than the flange 24 of the valve stem 2 to guide movement of the valve stem 2. In this embodiment, the air supplied to the outside air inlet 14 is supplied from outside the cleaner, and in other embodiments, this may be the case: the air filtered by the filter 50 is supplied to the outside air inlet 14 through a certain duct. The second cover 19 is fixed to the air cover 56, and the air cover 56 and the tray 4 are located on the upper and lower sides of the bottom cover 55.

The air suction opening 40 is circular, the tray 4 further comprises a first arc-shaped wall 45 surrounding one side of the air suction opening 40, the first arc-shaped wall 45 extends upwards, the air suction opening 40 and the ventilation opening 43 are positioned on two opposite lateral sides of the first arc-shaped wall 45, the lateral direction is opposite to the longitudinal direction, and the vertical direction is the longitudinal direction; the tray 4 further comprises a second arc-shaped wall 46, an arc-shaped groove 47 is formed by spacing between the first arc-shaped wall 45 and the second arc-shaped wall 46, a third arc-shaped wall 540 assembled to the arc-shaped groove 47 is arranged on the second frame 54, the first arc-shaped wall 45, the second arc-shaped wall 46, the third arc-shaped wall 540 and the arc-shaped groove 47 are respectively arc-shaped and respectively positioned between the air suction opening 40 and the ventilation opening 43, the first arc-shaped wall 45 forms a part of a third frame 412, the second arc-shaped wall 46 forms a part of the first frame 411, and the arc-shaped groove 47 forms a part of a matching groove 413.

The electromagnetic driving force direction of the electromagnetic coil module 3 to the valve rod 2 is consistent with the running direction of the valve rod 2 in the process from the initial position to the stroke end position of the valve rod 2, and the electromagnetic driving force direction is consistent with the running direction of the valve rod 2, namely, the electromagnetic driving force direction is approximately the same as the running direction of the valve rod 2. The valve rod 2 can move from the original position to the open valve position by a first preset distance under the action of electromagnetic force, wherein the first preset distance is 2 cm to 10 cm, and the open valve position of the valve rod 2 is 2.5 cm to 10 cm from the end position of the stroke of the valve rod 2.

In this embodiment, the valve rod 2 can move the sealing valve 15 away from the sealing position and can drive the sealing valve 15 to impact the valve rod 2 of the filter device, and the sealing valve 15 can impact the filter device under the driving of the valve rod 2, so that the valve rod 2 drives the sealing valve 15 to impact the filter device and cause impact on the filter device, so that stronger vibration can be generated on the filter device, accumulated dust of the filter device can be effectively shaken off, and the filter device can be cleaned, thereby providing a dust collector with good cleaning effect of the filter 50.

In this embodiment, when the closing valve 15 impacts the tray 4, the closing valve 15 is not in contact with the filtering device, and the impact is conducted by means of the pressed second elastic member 17; the tray 4 is fixedly arranged on the bottom cover 55, and the bottom cover 55 is disc-shaped. In this embodiment, the following will be described: the impact of the closing valve 15 on the tray 4 is conducted to the tray 4 by means of the pressed second elastic member 17, and the closing valve 15 is not in contact with the tray 4 at the time of impact. When the valve rod 2 moves to the stroke end position, the impact of the closing valve 15 on the biasing portion 41 is conducted to the biasing portion 41 by the pressed second elastic member 17, and the closing valve 15 impacts the biasing portion 41 by the pressed second elastic member 17. The biasing portion 41 is provided with an annular rib position 414 and a plurality of supporting rib positions 415 which are distributed radially, one end of the second elastic piece 17 is propped against the supporting rib positions 415, and the annular rib positions 414 surround the supporting rib positions 415. The tray 4 is an integrally formed one-piece part, the tray 4 is further provided with an annular mounting portion 48, and one end of the filter 50 is sleeved on the annular mounting portion 48. The annular rib portion 414 is annular, and the support rib portion 415 extends in the radial direction of the annular rib portion 414. The valve rod 2 pushes the closing valve 15 towards the filter means through the second end 23, further the valve rod 2 pushes the closing valve 15 towards the tray 4 through the second end 23, further the valve rod 2 pushes the closing valve 15 towards the biasing portion 41 through the second end 23.

In other embodiments, the closing valve 15 may be in contact with the filter device when the closing valve 15 impacts the tray 4, so as to directly impact the filter device, for example, by means of a protrusion 150 provided on the closing valve 15, the protrusion 150 protruding away from the valve stem 2, the protrusion 150 being located on the side of the closing valve 15 facing the tray 4; further, the protruding portion 150 is located on the side of the closing valve 15 facing the biasing portion 41; when the valve rod 2 moves to the stroke end position, the protruding part 150 contacts with and impacts the filter device; further, when the valve stem 2 moves to the stroke end position, the protrusion 150 contacts the filter tray 4 and impacts the tray 4; further, when the valve stem 2 moves to the stroke end position, the protruding portion 150 contacts the biasing portion 41 and impacts the biasing portion 41. The protrusion 150 includes a plurality of staggered rib locations 151. The protrusion 150 extends downward.

When the dust collector works, the motor 13 drives the impeller to suck, dirty air carrying dust, debris and the like is sucked into the dust collection container 10 through the dirty air inlet 100 of the dust collection container 10, the dust, the debris and the like are filtered by the filter 50, the dust and the like are remained in the dust collection container 10, and the air filtered by the filter 50 is discharged out of the dust collector through the air suction opening 40, the impeller and the air duct of the fan housing 56 and the discharge opening 560 of the fan housing 56 in sequence; when the filter 50 is required to be cleaned in the suction operation process of the dust collector, the electromagnetic coil module 3 is electrified, the valve rod 2 starts to move from the initial position under the electromagnetic driving force of the electromagnetic coil module 3, the valve rod 2 firstly impacts the sealing valve 15 to move the sealing valve 15 away from the external air inlet 14, at the moment, under the action of air negative pressure in the dust collection container 10, the air ventilated window 441, the second air inlet, the first air inlet 182, the external air inlet 14 and the ventilation opening 43 enter the filter 50, so that dust accumulated by the filter 50 is effectively blown into the dust collection container 10 to clean the filter 50, and the cleaning process can be summarized as backflushing airflow cleaning the filter 50; further, the valve rod 2 drives the closing valve 15 to directly or indirectly impact the tray 4, so as to generate stronger vibration to the tray 4, and indirectly shake the dust accumulated by the filter 50 down to the dust collecting container 10, so that the above cleaning process can be summarized as impact vibration cleaning the filter 50.

In the present embodiment, when the filter 50 is not cleaned, the electromagnetic coil module 3 is not energized with exciting current, the valve rod 2 is kept at the initial position, the stroke end position is the position of the valve rod 2 when the valve rod 2 is pressed together with the closing valve 15 and the second elastic member 17 is located, the initial position of the closing valve 15 is the closing position, and when the closing valve 15 leaves the closing position and continues to move toward the tray 4, the closing valve 15 moves together with the valve rod 2, so that when the closing valve 15 reaches the stroke end position, the valve rod 2 also reaches the stroke end position; in other embodiments, the impact force of the valve stem 2 may be weaker, so that the second spring does not reach the end-of-travel position of the second spring closing the valve 15 and the valve stem 2. The outside air inlet 14 is closed by means of a closing valve 15; in this embodiment, the solenoid module 3 may be automatically activated multiple times within a short time when the vacuum cleaner is started and suction is started, the time of single energizing the solenoid module 3 is substantially equal to the time (about 0.015 seconds to 0.03 seconds) from the initial position to the end-of-travel position of the valve rod 2, the solenoid module 3 is powered off in the reset stroke, the closing valve 15 is reset from the end-of-travel position to the closing position under the action of the second elastic member 17, the valve rod 2 is reset to the valve-opening position under the action of the first elastic member 16 and the second elastic member 17, and then the valve rod 2 is further reset from the valve-opening position to the initial position under the action of the first elastic member 16.

The valve rod 2 is approximately vertical, the magnetizable section 20 and the non-magnetizable section 21 are approximately vertical, the running direction of the valve rod 2 is the up-down direction, and the sealing valve 15 is pushed by the valve rod 2 to vertically move downwards and gradually away from the external air inlet 14; the closing valve 15 is circular as a whole. The valve stem 2, the solenoid module 3, and the closing valve 15 are located above the tray 4, and the valve stem 2, the solenoid module 3, and the closing valve 15 are located above the biasing portion 41.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that the present invention includes but is not limited to the accompanying drawings and the description of the above specific embodiment. Any modifications which do not depart from the functional and structural principles of the present invention are intended to be included within the scope of the appended claims.

Claims

1. A vacuum cleaner comprising a dust collection container, an external air inlet, a closing valve closing the external air inlet when in a closed position, characterized in that: the valve rod is at least partially positioned in the through passage at any position between the initial position and the stroke end position, the valve rod is separated from the closed valve at the initial position, the valve rod can be contacted with the closed valve at the closed position when moving to the open valve position, and the valve rod impacts the closed valve and moves the closed valve from the closed position during the movement from the initial position to the stroke end position; the vacuum cleaner further comprises a first elastic piece and a second elastic piece, wherein the first elastic piece is used for keeping the valve rod at an initial position, the second elastic piece is used for keeping the sealing valve at a sealing position, the first elastic piece is sleeved on the valve rod, and the first elastic piece is positioned between the electromagnetic coil module and the first end of the valve rod; the valve stem may overcome the force of the second resilient member to move the closure valve from the closed position.

2. A vacuum cleaner as claimed in claim 1, wherein: the first end of the valve rod is always positioned outside the solenoid module, the first end of the valve rod is positioned on two opposite sides of the solenoid module, and is farther from the solenoid module when the valve rod is in the initial position relative to the valve rod in the valve opening position and the stroke end position.

3. A vacuum cleaner as claimed in claim 1, wherein: the second end is located between the first end and the closed valve, and one end of the first elastic piece is propped against the electromagnetic coil module.

4. A vacuum cleaner as claimed in claim 1, wherein: the valve rod is provided with a flange positioned outside the electromagnetic coil module, the first elastic piece is propped between the electromagnetic coil module and the flange, and the first elastic piece is a spring with the radial size gradually reduced from the middle to the two ends.

5. A vacuum cleaner according to any one of claims 1-4, wherein: the second end of the valve rod is positioned in the through channel of the electromagnetic coil module when the valve rod is at the initial position, the second end of the valve rod is positioned outside the electromagnetic coil module when the valve rod is at the stroke end position, and the first end and the second end are positioned on two opposite sides of the electromagnetic coil module.

6. A vacuum cleaner as claimed in claim 1, wherein: the valve rod is provided with a magnetizable section which can be magnetized by the electromagnetic coil module and a non-magnetizable section which cannot be magnetized by the electromagnetic coil module, the magnetizable section and the non-magnetizable section are fixed together, the magnetizable section is positioned between the non-magnetizable section and the closed valve, the magnetizable section is provided with a head end and a tail end which are opposite in the movement direction of the valve rod, the tail end is positioned between the non-magnetizable section and the head end, when the valve rod is in an initial position, the non-magnetizable section is at least partially positioned in the electromagnetic coil module, and when the valve rod is in an end-of-stroke position, the non-magnetizable section is at least partially positioned outside the electromagnetic coil module.

7. A vacuum cleaner as claimed in claim 6, wherein: the central position of the magnetizable segment between the opposite ends of the electromagnetic coil module through passage in the valve rod movement direction is always located between the central position of the electromagnetic coil module through passage between the opposite ends of the magnetizable segment in the valve rod movement direction and the closing valve, or the central position of the magnetizable segment between the opposite ends of the magnetizable segment in the valve rod movement direction overlaps the central position of the electromagnetic coil module through passage between the opposite ends of the electromagnetic coil module through passage in the valve rod movement direction when the valve rod is in the stroke end position.

8. A vacuum cleaner as claimed in claim 6, wherein: the head end of the magnetizable segment is positioned outside the electromagnetic coil module all the time, the tail end of the valve rod is positioned outside the electromagnetic coil module and is positioned on the opposite sides of the electromagnetic coil module with the head end when the valve rod is at the stroke end position, and the distance of the tail end of the valve rod exceeding the electromagnetic coil module in the movement direction of the valve rod is smaller than the distance of the head end exceeding the electromagnetic coil module when the valve rod is at the stroke end position.

9. A vacuum cleaner as claimed in claim 8, wherein: when the valve rod is in the initial position, the tail end is positioned in the electromagnetic coil module.

10. A vacuum cleaner as claimed in claim 6, wherein: the non-magnetizable segment is located entirely within the solenoid module when the valve stem is in the initial position.

11. A vacuum cleaner as claimed in claim 6, wherein: the magnetizable segment is arranged coaxially with the non-magnetizable segment.

12. A vacuum cleaner as claimed in claim 6, wherein: the non-magnetizable segment may be in contact with the closure valve in the closed position when the valve stem is moved to the open position, the valve stem being arranged to impact the closure valve through the non-magnetizable segment to cause the closure valve to move away.

13. A vacuum cleaner as claimed in claim 6, wherein: the magnetizable section is provided with a mounting hole extending from the tail end into the magnetizable section, the non-magnetizable section is fixed in the mounting hole, the mounting hole is provided with internal threads, and the non-magnetizable section is provided with external threads in threaded connection with the internal threads.

14. A vacuum cleaner as claimed in claim 6, wherein: the magnetizable section and the non-magnetizable section are respectively columns, the magnetizable section is an iron column or a steel column or a column containing more than half of iron, and the non-magnetizable section is a copper column or an aluminum column or a copper-aluminum alloy column or a plastic column.

15. A vacuum cleaner according to any one of claims 1-4, wherein: the filter device is used for filtering dirty air, and the second elastic piece is always in a compressed state between the filter device and the sealing valve.

16. A vacuum cleaner as claimed in claim 15, wherein: the second elastic piece is a spring, and when the valve rod moves to the stroke end position, the second elastic piece is in a pressed state, and the closed valve forms impact on the filtering device by the pressed second elastic piece.

17. A vacuum cleaner as claimed in claim 16, wherein: the filter device comprises a tray and a filter arranged on the tray, one end of the second elastic piece is propped against the tray, the other opposite end of the second elastic piece is propped against the sealing valve, and when the valve rod moves to the stroke end position, the sealing valve impacts the tray through the pressed second elastic piece.

18. A vacuum cleaner as claimed in claim 15, wherein: the filter device comprises a tray and a filter arranged on the tray, the tray is provided with an exhaust opening, air filtered by the filter flows through the exhaust opening, one end of the second elastic piece is propped against the tray, and the other end of the second elastic piece is propped against the sealing valve.

19. A vacuum cleaner as claimed in claim 18, wherein: the tray is also provided with a biasing part which is biased at one side of the tray, the second elastic piece is positioned between the closed valve and the biasing part, and one end of the second elastic piece is pressed against the biasing part.

20. A vacuum cleaner as claimed in claim 19, wherein: the tray is provided with at least one ventilation opening which is spaced from the air suction opening, and when the filter is cleaned, air can sequentially pass through the opened external air inlet and the ventilation opening and is applied to the surface of the filter, which is opposite to the dust collection container.

21. A vacuum cleaner as claimed in claim 19, wherein: the tray is further provided with a main body part, the offset part is offset on one side of the main body part and is integrally formed with the main body part, the air suction opening is formed in the main body part, the motor is located on the upper side of the tray, the filter is located on the lower side of the tray, and the filter is cylindrical.

22. A vacuum cleaner as claimed in claim 20, wherein: the ventilation opening is positioned between the air suction opening and the second elastic piece.

23. A vacuum cleaner as claimed in claim 20, wherein: the dust collecting device further comprises a first chamber, the second elastic piece is located in the first chamber, the external air inlet forms an air inlet of the first chamber, the ventilation opening forms an air outlet of the first chamber, and the offset part is spaced between the first chamber and the inner space of the dust collecting container.

24. A vacuum cleaner as claimed in claim 23, wherein: the offset part is equipped with the diapire, encircles the first frame of second elastic component, and the dust catcher still includes the roof opposite with the diapire, encircles the second frame of second elastic component, and first frame, second frame are located respectively between diapire and the roof, and the outside air entry is located the roof, and the vent is seted up in the diapire, and diapire, first frame, roof, second frame enclose into first cavity.

25. A vacuum cleaner as claimed in claim 24, wherein: the tray is provided with a third frame surrounding the first frame, a matching groove surrounding the second elastic piece is formed between the first frame and the third frame at intervals, and the second frame is assembled into the matching groove.

26. A vacuum cleaner as claimed in claim 1, wherein: the air filter is characterized by further comprising a second elastic piece, a tray and a filter, wherein the second elastic piece is used for keeping the sealing valve at a sealing position, the filter is arranged on the tray, the second elastic piece is a spring, the second elastic piece is always in a compressed state between the tray and the sealing valve, the tray is provided with an exhaust opening, air filtered by the filter flows through the exhaust opening, one end of the second elastic piece is propped against the tray, and when the valve rod moves to a stroke end position, the second elastic piece is in a pressing state, and the sealing valve impacts the tray through the pressing second elastic piece.

27. A vacuum cleaner as claimed in claim 1, wherein: the air filter is characterized by further comprising a tray and a filter arranged on the tray, wherein the second elastic piece is a spring, the second elastic piece is always in a compressed state between the tray and the closed valve, the tray is provided with an exhaust port, air filtered by the filter flows through the exhaust port, the tray is provided with a biasing part biased on one side of the tray, the second elastic piece is positioned between the closed valve and the biasing part, one end of the second elastic piece is propped against the biasing part, and when the valve rod moves to a stroke end position, the second elastic piece is in a pressing state and the closed valve impacts the biasing part through the pressed second elastic piece.

28. A vacuum cleaner as claimed in claim 1, wherein: the valve rod and the first elastic piece are covered by the first cover body, the first cover body is provided with a sleeve part surrounding the valve rod and the first elastic piece, and a plurality of mounting support legs, and a first air inlet which is in fluid communication with the external air inlet is formed between every two adjacent mounting support legs.

29. A vacuum cleaner as claimed in claim 28, wherein: the device further comprises a motor for providing suction power, and a second cover body for covering the first cover body, wherein the second cover body is provided with a second air inlet which is in fluid communication with the first air inlet.

30. A vacuum cleaner as claimed in claim 29, wherein: the air cleaner also comprises a machine head shell, wherein the first cover body, the second cover body and the electromagnetic coil module are positioned in the machine head shell, the machine head shell is provided with a handle and a ventilation window for moving the cleaner, and air can flow to an external air inlet through the ventilation window, the second air inlet and the first air inlet in sequence.

31. A vacuum cleaner as claimed in claim 1, wherein: and the electromagnetic driving force direction of the electromagnetic coil module to the valve rod is consistent with the running direction of the valve rod in the process from the initial position to the stroke end position of the valve rod.

32. A vacuum cleaner as claimed in claim 1, wherein: the filter device is used for filtering dirty air, the second end is positioned between the first end and the sealing valve, the sealing valve is positioned between the valve rod and the filter device, and the valve rod pushes the sealing valve towards the filter device through the second end.

33. A vacuum cleaner as claimed in claim 1, wherein: the valve rod is connected with the valve rod, and the valve rod is connected with the valve rod.

34. A vacuum cleaner as claimed in claim 32, wherein: the tray is provided with a biasing portion which is biased to one side of the tray, and when the valve rod moves to the stroke end position, the closing valve is contacted with the biasing portion and impacts the biasing portion.

35. A vacuum cleaner as claimed in claim 33, wherein: the closing valve is provided with a protruding part protruding in a direction away from the valve rod, and when the valve rod moves to the stroke end position, the protruding part contacts with the tray and impacts the tray.