CN205931771U - Vacuum structure , vacuum refreshing lid, sealed post core and vacuum refreshing container - Google Patents
Vacuum structure , vacuum refreshing lid, sealed post core and vacuum refreshing container Download PDFInfo
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- CN205931771U CN205931771U CN201620572741.1U CN201620572741U CN205931771U CN 205931771 U CN205931771 U CN 205931771U CN 201620572741 U CN201620572741 U CN 201620572741U CN 205931771 U CN205931771 U CN 205931771U
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- 238000007789 sealing Methods 0.000 claims description 234
- 230000009471 action Effects 0.000 claims description 28
- 238000005086 pumping Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 20
- 230000005489 elastic deformation Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 9
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a vacuum structure, vacuum refreshing lid, sealed post core and vacuum refreshing container. Invent for solving the complicated scheduling problem of prior art structure. Vacuum refreshing lid including the tube -shape casing the tube -shape casing on be provided with the ascending cavity of opening, the piston sets up in the cavity, can follow cavity reciprocating axially, reset spring establishes between piston and cavity bottom, sealed post core, its lower extreme set up in the cavity bottom, and the upper end makes progress and wears to establish in the piston air vent, adopt above -mentioned structure, press and move or loosen the piston, make the cavity of piston in the tube -shape casing be reciprocating motion to take the air out from the container in, in order to reach the vacuum, especially adopt special construction's sealed post core, make multi -functional collection such as its collection is sealed, vacuum demonstration integrative, have simple structure, seal up advantage such as effectual, convenient to use.
Description
Technical Field
The utility model relates to a food vacuum fresh-keeping device especially relates to a vacuum fresh-keeping lid and vacuum fresh-keeping container.
Background
As is known, the common cups, jars or bowls store food, and the contact surface of the food surface and the air is large, so that the food is easy to oxidize to affect the fresh keeping of the food, and even the food is easy to deteriorate. Particularly in hot summer, people usually put food into a fresh-keeping vessel to prolong the fresh-keeping time of the food. However, the preservation principle of the preservation vessels sold in the market at present is to isolate food from the outside so as to reduce pollution and supplementary food. Because the vessel is not in vacuum, harmful substances in the residual air still have certain corrosion effect on food, the fresh-keeping time is not too long, and the fresh-keeping quality is not reliable.
Therefore, some vacuum refreshing tanks are also provided, and are usually vacuumized by matching an independent pull-type vacuum pump with the refreshing tank. There are some integrally designed vacuum fresh-keeping boxes, but the structure is more complicated, the volume is bigger, and it is not suitable for popularization and use.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model aims to provide a vacuum fresh-keeping cover and a vacuum fresh-keeping container which have simple structure, convenient operation and use and good sealing effect.
The utility model discloses an evacuation structure for set up or install the air in order to extract the container on the container, include:
the cylindrical shell is provided with a chamber with an upward opening, and the bottom of the chamber is provided with an air suction hole communicated with the inside of the container;
the piston is arranged in the cavity and can reciprocate along the axial direction of the cavity; the periphery of the piston is hermetically sealed with the surface of the cavity; the middle part of the piston is provided with a piston air vent for air release and sealing,
the return spring is arranged between the piston and the bottom of the cavity;
the lower end of the sealing column core is arranged at the bottom of the chamber, and the upper end of the sealing column core upwards penetrates through the air vent of the piston; wherein, sealed post core has:
the upper section is a sealing section and forms air seal with a piston vent hole running in the section;
the middle section is an air discharge section and forms an air discharge structure with an air discharge hole of the piston running in the middle section;
the lower section is provided with a sealing cover plate which is radially arranged and matched with the air exhaust hole, and the sealing cover plate is matched with the air exhaust hole to form a one-way valve;
wherein, the motion process of the vacuum-pumping structure comprises the following steps:
air release process:
when external force is applied to the piston, the piston descends in the chamber from the upper dead point along the sealing section of the sealing column core, the air vent of the piston is hermetically sealed with the sealing section of the sealing column core, the one-way valve is closed, and air in the chamber is compressed;
when the piston continues to move downwards in the cavity under the action of external force to the air discharge section, the compressed air in the cavity is released through the air discharge structure, and the air discharge process is finished;
air extraction process:
when the external force is removed, the piston leaves the air release section under the action of the reset spring and moves upwards along the sealing section, the air release hole of the piston is hermetically sealed with the sealing section of the sealing column core, the one-way valve is opened under the action of air pressure, and the air in the container flows towards the cavity;
when the piston moves to the upper stop point, the air vent of the piston is hermetically sealed with the sealing section of the sealing column core, the one-way valve is closed, and the air exhaust process is completed.
Preferably, the sealing column core is made of elastic plastic materials in an integrated manner; the sealed post core still include:
a hollow display cavity arranged in the sealing column core near the upper end;
the air inlet is arranged on the sealing column core below the sealing cover plate and is communicated with the air suction hole or the container;
the air guide channel is arranged in the sealing column core and is used for communicating the display cavity with the air inlet;
when the pressure in the container is smaller than the pressure outside the cylindrical shell, the volume of the display cavity is reduced under the action of the pressure, so that the upper end surface of the sealing column core generates elastic deformation downwards; when the pressure in the container is equal to the pressure outside the cylindrical shell, the upper end surface of the sealing column core is restored to the initial state under the action of elastic deformation.
Preferably, an annular sealing valve seat is arranged upwards on the bottom wall of the chamber on the peripheral side of the sealing column core; the air pumping hole is arranged between the sealing column and the annular sealing valve seat; the sealing cover plate is matched with the annular sealing valve seat; the one-way valve is formed by a sealing valve seat and a sealing cover plate covering the annular sealing valve seat.
Preferably, a recess is formed downward at a position corresponding to the sealing cylinder core on the upper surface of the piston, and the upper end of the sealing cylinder core is positioned in the recess.
Preferably, a boss is formed upwards in the center of the bottom of the chamber, a through hole communicated with the container is formed in the middle of the boss, and an annular sealing valve seat is arranged on the upper end face of the boss;
the sealing column core is made of elastic plastic materials integrally; the lower end of the sealing column core is provided with a fixed convex part with the diameter larger than that of the through hole, the lower end of the sealing column core downwards passes through the through hole to ensure that the fixed convex part is fixed on the cylindrical shell outside the boss, a sealing cover plate at the lower section of the sealing column core is just matched with the valve seat, and the one-way valve is formed by the sealing valve seat and the sealing cover plate covering the annular sealing valve seat; the sealing cover plate is matched with the fixed convex part to clamp and fix the sealing column core on the boss of the cylindrical shell;
an air exhaust channel communicated with the through hole and the container is arranged on the fixed convex part or the cylindrical shell contacted with the fixed convex part;
the sealing column core is positioned in the through hole and is in clearance fit with the through hole, and the air exhaust hole is a clearance between the sealing column core and the through hole;
the sealing column core is made of elastic plastic materials integrally; the sealed post core still include:
a hollow display cavity arranged in the sealing column core near the upper end;
the air inlet is arranged on the lower end face of the sealing column core;
the air guide channel is arranged in the sealing column core and is used for communicating the display cavity with the air inlet;
when the pressure in the container is smaller than the pressure outside the cylindrical shell, the volume of the display cavity is reduced under the action of the pressure, so that the upper end surface of the sealing column core generates elastic deformation downwards; when the pressure in the container is equal to the pressure outside the cylindrical shell, the upper end surface of the sealing column core is restored to the initial state under the action of elastic deformation.
Preferably, the sealing column core is made of elastic plastic materials in an integrated manner; wherein,
the upper section and the middle section of the sealing column core are a continuous reducer, the diameter of the upper section of the sealing column core at least corresponding to the top dead center of the piston is larger than that of the air vent of the piston, and the diameter of the middle section of the sealing column core at least corresponding to the bottom dead center of the piston is smaller than that of the air vent of the piston; or,
the middle section of the sealing column core is a continuous variable diameter body, and the diameter of the middle section of the sealing column core at least corresponding to the lower dead point of the piston is smaller than that of the air vent of the piston.
Preferably, the piston is a cylindrical piston cover with a downward opening, a sealing groove is formed in the lower end of the cylindrical outer surface of the cylindrical piston cover, and a sealing ring hermetically sealed with the surface of the inner wall of the cylindrical shell cavity is arranged in the sealing groove; and the upper end of the cylindrical shell is provided with a limiting structure for limiting the movement of the cylindrical piston cover.
In order to achieve the above object, the utility model discloses a sealed post core, include:
the upper section is a sealing section and forms air seal with a piston vent hole running in the section;
the middle section, the air discharging section and the air discharging hole of the piston running in the section form an air discharging structure;
the lower section is provided with a sealing cover plate which is arranged in the radial direction, and the sealing cover plate is matched with the matched air suction hole or the sealing valve seat to form a one-way valve.
Preferably, the sealing column core is made of elastic plastic materials in an integrated manner; the sealed post core includes:
a hollow display cavity arranged in the sealing column core near the upper end;
the air inlet is arranged on the sealing column core below the sealing cover plate;
the air guide channel is arranged in the sealing column core and is used for communicating the display cavity with the air inlet;
when the pressure in the container is smaller than the pressure outside the cylindrical shell, the volume of the display cavity is reduced under the action of the pressure, so that the upper end surface of the sealing column core generates elastic deformation downwards; when the pressure in the container is equal to the pressure outside the cylindrical shell, the upper end surface of the sealing column core is restored to the initial state under the action of elastic deformation.
Preferably, the upper section and the middle section of the sealing column core are a continuous reducer, the diameter of the upper section of the sealing column core at least corresponding to the top dead center of the piston is larger than that of the air vent of the piston, and the diameter of the middle section of the sealing column core at least corresponding to the bottom dead center of the piston is smaller than that of the air vent of the piston; or,
the middle section of the sealing column core is a continuous variable diameter body, and the diameter of the middle section of the sealing column core at least corresponding to the lower dead point of the piston is smaller than that of the air vent of the piston.
Preferably, the fixing part is a fixing convex part arranged at the lower end of the sealing column core in the radial direction, and the fixing convex part and the sealing cover plate are arranged at intervals.
In order to achieve the above purpose, the vacuum fresh-keeping cover or the vacuum fresh-keeping container of the utility model comprises a cover body or a container body, wherein the cover body or the container body is provided with the vacuum pumping structure; the cylindrical shell is a part of a cover body or a container body, and the air suction hole is directly communicated with the inside of the container or communicated with the inside of the container through an air guide channel. .
By adopting the structure, the piston is pressed or loosened to make the chamber of the piston in the cylindrical shell do reciprocating motion, so that air is pumped out from the container to achieve vacuum, and particularly, the sealing column core with a special structure is adopted to integrate sealing, vacuum display and other functions into a whole, so that the vacuum-pumping vacuum-sealing device has the advantages of simple structure, good sealing effect, convenience in use and the like.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the embodiment shown in fig. 1 when the piston is operated downwards in the sealing section under the action of external force.
FIG. 3 is a schematic view of the embodiment of FIG. 2, with the piston continuing to move downward in the venting section when subjected to an external force.
Fig. 4 is a schematic structural diagram of the embodiment shown in fig. 3, when the external force is removed, the piston runs in the sealing section under the action of the return spring.
Fig. 5 is a schematic structural diagram of the piston running to the top dead center under the action of the return spring in the embodiment shown in fig. 4.
Fig. 6 is a schematic structural diagram of another embodiment of the present invention;
FIG. 7 is an assembly diagram of the vacuum pumping structure in the embodiment of FIG. 6.
Fig. 8 is a schematic structural view of the sealed column core shown in fig. 7 after being vacuumized.
FIG. 9 is a schematic view of the vacuum pumping arrangement of the present invention;
FIG. 10 is a schematic view of a seal core;
FIG. 11 is a schematic structural view of example 3 of the present invention;
fig. 12 is a schematic structural diagram of embodiment 4 of the present invention.
Detailed Description
The terms "upper section", "middle section" and "lower section" in the present invention all represent relative position relationships, and do not include absolute numerical relationships.
The present invention will be further described with reference to the accompanying drawings and examples.
The vacuum pumping structure of the utility model is shown in fig. 9, and comprises a cylindrical shell 1, wherein a chamber with an upward opening is arranged on the cylindrical shell 1, and the bottom of the chamber is provided with an air pumping hole 7 communicated with the inside of the container;
the piston 3 is arranged in the cavity and can reciprocate along the axial direction of the cavity; the periphery of the piston is hermetically sealed with the surface of the cavity; the middle part of the piston is provided with a piston air vent for air release and sealing,
and the return spring 5 is arranged between the piston and the bottom of the chamber.
The lower end of the sealing column core 6 is arranged at the bottom of the chamber, and the upper end of the sealing column core upwards penetrates through the air vent of the piston; wherein, sealed post core has: as shown in figure 10 of the drawings,
the upper section A is a sealing section and forms air seal with a piston vent hole running in the section;
the middle section B is an air release section and forms an air release structure with an air release hole of the piston running in the middle section B;
the lower section C is provided with a sealing cover plate which is radially arranged and is matched with the air exhaust hole, and the sealing cover plate is matched with the air exhaust hole to form a one-way valve;
wherein, the motion process of the vacuum-pumping structure comprises the following steps:
air release process:
when external force is applied to the piston, the piston descends in the chamber from the upper dead point along the sealing section of the sealing column core, the air vent of the piston is hermetically sealed with the sealing section of the sealing column core, the one-way valve is closed, and air in the chamber is compressed;
when the piston continues to move downwards to the air discharge section in the chamber under the action of external force, the compressed air in the chamber is released through the air discharge structure, and the air discharge process is finished;
air extraction process:
when the external force is removed, the piston leaves the air release section under the action of the reset spring and moves upwards along the sealing section, the air release hole of the piston is hermetically sealed with the sealing section of the sealing column core, the one-way valve is opened under the action of air pressure, and the air in the container flows towards the cavity;
when the piston moves to the upper stop point, the air vent of the piston is hermetically sealed with the sealing section of the sealing column core, the one-way valve is closed, and the air exhaust process is completed.
As an improvement of the vacuum pumping structure, the sealing column core 6 is made of elastic plastic materials integrally; the sealed post core still include: a hollow display chamber 61 disposed within said sealed cylindrical core proximate the upper end; the air inlet 62 is arranged on the sealing column core below the sealing cover plate and is communicated with the air suction hole or the container; the air guide channel 63 is arranged in the sealing column core and is used for communicating the display cavity with the air inlet; after the structure is added, when the container is changed into vacuum, the volume of the display cavity is reduced under the action of pressure, so that a certain amount of elastic deformation is generated downwards on the upper end surface of the sealing column core, and the deformation can be conveniently and visually seen, so that a user can conveniently know the change.
Example 1
Fig. 1 to 5 are operation process diagrams of the structural schematic diagrams of the embodiment.
As shown in fig. 1 to 5, the vacuum structure of the present embodiment is applied to a cover, and includes:
the container comprises a cylindrical shell (cover body) 1, wherein a cavity with an upward opening is arranged on the cylindrical shell, and an air suction hole 5 communicated with the inside of the container is formed in the bottom of the cavity;
the piston 3 is arranged in the cavity and can reciprocate along the axial direction of the cavity; the peripheral side of the piston 3 is hermetically sealed with the surface of the cavity through a sealing ring 4; the middle part of the piston is provided with a piston air vent for air release and sealing,
a return spring 5 arranged between the piston 4 and the bottom of the chamber;
the lower end of the sealing column core 6 is arranged at the bottom of the chamber, and the upper end of the sealing column core upwards penetrates through the air vent of the piston; wherein, sealed post core has:
the upper section is a sealing section and forms air seal with a piston vent hole running in the section;
the middle section is an air discharge section and forms an air discharge structure with an air discharge hole of the piston running in the middle section; the venting structure of FIG. 1 is a segment of a reducer disposed on the sealing core; wherein, the diameter of the upper end of the diameter-changing body is equivalent to that of the vent hole, and the diameter of the lower end of the diameter-changing body is smaller than that of the vent hole. Of course, the air release structure can also be an air release groove or an air release channel and the like which are axially arranged at the middle section of the sealing column core.
The lower section is provided with a sealing cover plate which is radially arranged and matched with the air exhaust hole, and the sealing cover plate is matched with the air exhaust hole to form a one-way valve;
wherein, the sealing column core 6 is made of elastic plastic materials integrally; the sealed post core still include:
a hollow display chamber 61 disposed within said sealed cylindrical core proximate the upper end;
the air inlet 62 is arranged on the sealing column core below the sealing cover plate and is communicated with the air suction hole or the container;
the air guide channel 63 is arranged in the sealing column core and is used for communicating the display cavity with the air inlet;
the motion process of the vacuum-pumping structure is as follows:
when the vacuumizing structure is covered on the container, the sealing ring 2 of the vacuumizing structure and the upper opening of the container form air seal under the action of external force; at this time, the air pressure inside and outside the container was equivalent, as shown in fig. 1.
When external force is applied to the piston 3, as shown in fig. 2, the piston 3 descends in the chamber from the top dead center along the sealing section of the sealing cylinder core, the air vent of the piston is hermetically sealed with the upper section (sealing section) of the sealing cylinder core 6, the one-way valve is closed, and the air in the chamber is compressed;
when the piston 3 continues to move downwards to the air discharging section (variable diameter body section) in the chamber under the action of external force, as shown in fig. 3, the air compressed in the chamber is released through the air discharging structure at the middle section of the sealing column core, and the air discharging process is completed;
when the external force is removed, the piston 3 leaves the air release section under the action of the reset spring 5 and moves upwards along the sealing section, the air release hole of the piston is hermetically sealed with the sealing section of the sealing column core, the one-way valve is opened under the action of air pressure, and partial air in the container is pumped into the cavity by the piston through the air exhaust hole; when the piston 3 runs to the upper stop point, the air vent of the piston is hermetically sealed with the sealing section of the sealing column core, the one-way valve is closed, and the air exhaust process is finished. At this point, the pressure of the container begins to be less than the pressure outside the cylindrical housing. At this time, the volume of the cavity is reduced under the action of pressure, so that the upper end face of the sealing column core generates a certain amount of elastic deformation downwards.
Repeating the above process, and pumping out air in the container little by little to form vacuum; the downward elastic deformation of the upper end surface of the sealing column core is more and more obvious as shown in fig. 5 until the vacuumizing structure completes the predetermined vacuum requirement.
Example 2
Fig. 6 to 8 are schematic structural views illustrating the vacuum-pumping structure of the present embodiment applied to the cover body and matched with the can body to form the vacuum refreshing can.
The vacuum refreshing tank shown in fig. 6 comprises a tank body 7 and a vacuumizing structure 1 covered on the tank body, wherein the vacuumizing structure 1 and the tank body 7 are sealed through a sealing gasket 2.
A chamber 12 with an upward opening is arranged on a cylindrical shell 11 of the vacuum-pumping structure; a boss 15 is formed upwards in the center of the bottom of the chamber, an air exhaust hole 14 communicated with the container is formed in the center of the boss 15, and an annular sealing valve seat 13 is arranged on the upper end face of the boss 15 around the air exhaust hole;
the sealing column core 6 is made of elastic plastic materials integrally; wherein, sealed post core has:
the upper section is a sealing section and forms air seal with a piston vent hole running in the section;
the middle section is an air discharge section and forms an air discharge structure with an air discharge hole of the piston running in the middle section; the venting structure of FIG. 1 is a segment of a reducer disposed on the sealing core; wherein, the diameter of the upper end of the diameter-changing body is equivalent to that of the vent hole, and the diameter of the lower end of the diameter-changing body is smaller than that of the vent hole. Of course, the air release structure can also be an air release groove or an air release channel and the like which are axially arranged at the middle section of the sealing column core.
The lower section is provided with a sealing cover plate which is radially arranged and matched with the air exhaust hole, and the sealing cover plate is matched with the air exhaust hole to form a one-way valve;
the lower end of the sealing column core is provided with a fixed convex part 65 with the diameter larger than that of the through hole, the lower end of the sealing column core downwards passes through the through hole to enable the fixed convex part to be fixed on the cylindrical shell outside the boss, a sealing cover 64 plate at the lower section of the sealing column core is enabled to be just matched with the valve seat, and the one-way valve is formed by a sealing valve seat 13 and a sealing cover plate covering the annular sealing valve seat; the sealing cover plate 64 is matched with the fixed convex part 65 to clamp and fix the sealing column core on the boss 15 of the cylindrical shell;
an air exhaust channel communicated with the through hole and the container is arranged on the fixed convex part or the cylindrical shell contacted with the fixed convex part;
the sealing column core is positioned in the through hole 6 and is in clearance fit with the through hole, and the air exhaust hole is a clearance between the sealing column core and the through hole;
the sealing column core is made of elastic plastic materials integrally; the sealed post core still include:
a hollow display chamber 61 disposed within said sealed cylindrical core proximate the upper end;
an air inlet 62 arranged on the lower end surface of the sealing column core;
the air guide channel 63 is arranged in the sealing column core and is used for communicating the display cavity with the air inlet;
the piston 3 is arranged in the cavity and can reciprocate along the cavity; the piston is a cylindrical piston cover with a downward opening, a sealing groove is arranged at the lower end of the cylindrical outer surface of the cylindrical piston cover, and a sealing ring 4 hermetically sealed with the surface of the inner wall of the cylindrical shell cavity is arranged in the sealing groove; and the upper end of the cylindrical shell is provided with a limiting structure for limiting the movement of the cylindrical piston cover. And a piston air vent hole 31 is formed in the middle of the piston 3.
The return spring 5 is arranged between the piston and the bottom of the cavity;
the vacuum-pumping process in this embodiment is substantially the same as that in embodiment 1, and is not described herein.
As an improvement of the two embodiments, as shown in fig. 1 and fig. 6, a recess is formed downward at a position corresponding to the upper surface of the piston and the upper end of the sealing cylinder is located in the recess, so that the height of the sealing cylinder is higher than that of the upper surface of the piston, and the sealing performance of the sealing cylinder is prevented from being influenced by the contact with the sealing cylinder during transportation or storage. The concave part on the lower surface of the piston forms an accommodating part which can fix the positions of the piston and the spring at the bottom of the chamber and simultaneously improve the guidance of the piston in the chamber for reciprocating up and down.
As an improvement of the two embodiments, the upper section and the middle section of the sealing column core of the utility model can be a full continuous inverted cone with small taper (continuous reducer); for convenience of explanation, reference will now be made to:
when the length of the upper section and the middle section of the sealing column core is 15 mm, and the diameter of a piston air vent for air release and sealing on the piston is 5 mm (for convenience of explanation, the thickness of the piston is not considered, the same is used below), the sealing column core is an inverted cone with the diameter of 5.1 mm at the upper end of the upper section and the diameter of 4.9 mm at the lower end of the middle section. Thus, when the piston runs in the 5.1-5 mm section, it is the sealing section, and when it runs in the 5-4.9 mm section, it is the air release section.
In the above embodiments, the dimensions of the sealing cylinder core and the piston vent hole are only exemplary and are not intended to be practical.
Example 3
Fig. 11 is a schematic structural view of a vacuum-preserving container formed by applying a vacuum-pumping structure to one side of the container and matching the container body, wherein the air-pumping hole is communicated with the inside of the container through an air guide channel 9. The vacuum-pumping process in this embodiment is substantially the same as that in embodiment 1, and is not described herein.
Example 4
Fig. 12 is a schematic structural view of a vacuum structure applied to one side of a container and cooperating with the container body to form a vacuum refreshing container, wherein the vacuum process of this embodiment in which the air exhaust hole is directly communicated with the inside of the container is substantially the same as that of embodiment 1, and is not repeated herein.
Claims (10)
1. An evacuation structure for use in a container to be set or mounted thereon to evacuate air from the container, comprising:
the cylindrical shell is provided with a chamber with an upward opening, and the bottom of the chamber is provided with an air suction hole communicated with the inside of the container;
the piston is arranged in the cavity and can reciprocate along the axial direction of the cavity; the periphery of the piston is hermetically sealed with the surface of the cavity; the middle part of the piston is provided with a piston air vent for air release and sealing,
the return spring is arranged between the piston and the bottom of the cavity;
the lower end of the sealing column core is arranged at the bottom of the chamber, and the upper end of the sealing column core upwards penetrates through the air vent of the piston; wherein, sealed post core has:
the upper section is a sealing section and forms air seal with a piston vent hole running in the section;
the middle section is an air discharge section and forms an air discharge structure with an air discharge hole of the piston running in the middle section;
the lower section is provided with a sealing cover plate which is radially arranged and matched with the air exhaust hole, and the sealing cover plate is matched with the air exhaust hole to form a one-way valve;
wherein, the motion process of the vacuum-pumping structure comprises the following steps:
air release process:
when external force is applied to the piston, the piston descends in the chamber from the upper dead point along the sealing section of the sealing column core, the air vent of the piston is hermetically sealed with the sealing section of the sealing column core, the one-way valve is closed, and air in the chamber is compressed;
when the piston continues to move downwards to the air discharge section in the chamber under the action of external force, the compressed air in the chamber is released through the air discharge structure, and the air discharge process is finished;
air extraction process:
when the external force is removed, the piston leaves the air release section under the action of the reset spring and moves upwards along the sealing section, the air release hole of the piston is hermetically sealed with the sealing section of the sealing column core, the one-way valve is opened under the action of air pressure, and the air in the container flows towards the cavity;
when the piston moves to the upper stop point, the air vent of the piston is hermetically sealed with the sealing section of the sealing column core, the one-way valve is closed, and the air exhaust process is completed.
2. The evacuation structure of claim 1, wherein said sealing core is made of an elastic plastic material; the sealed post core still include:
a hollow display cavity arranged in the sealing column core near the upper end;
the air inlet is arranged on the sealing column core below the sealing cover plate and is communicated with the air suction hole or the container;
the air guide channel is arranged in the sealing column core and is used for communicating the display cavity with the air inlet;
when the pressure in the container is smaller than the pressure outside the cylindrical shell, the volume of the display cavity is reduced under the action of the pressure, so that the upper end surface of the sealing column core generates elastic deformation downwards; when the pressure in the container is equal to the pressure outside the cylindrical shell, the upper end surface of the sealing column core is restored to the initial state under the action of elastic deformation.
3. The vacuum structure as claimed in claim 1, wherein an annular sealing valve seat is provided upwardly in the bottom wall of the chamber on the periphery of the sealing cylinder core; the air pumping hole is arranged between the sealing column and the annular sealing valve seat; the sealing cover plate is matched with the annular sealing valve seat; the one-way valve is formed by a sealing valve seat and a sealing cover plate covering the annular sealing valve seat.
4. An evacuation structure according to claim 1, wherein a recess is formed downward at a position corresponding to the upper surface of the piston with respect to the sealing cylinder, and the upper end of the sealing cylinder is located in the recess.
5. The vacuum pumping structure as claimed in claim 1, wherein a boss is formed upward at the center of the bottom of the chamber, a through hole communicated with the container is formed in the middle of the boss, and an annular sealing valve seat is formed on the upper end surface of the boss;
the sealing column core is integrally manufactured; the lower end of the sealing column core is provided with a fixed convex part with the diameter larger than that of the through hole, the lower end of the sealing column core downwards passes through the through hole to ensure that the fixed convex part is fixed on the cylindrical shell outside the boss, a sealing cover plate at the lower section of the sealing column core is just matched with the valve seat, and the one-way valve is formed by the sealing valve seat and the sealing cover plate covering the annular sealing valve seat; the sealing cover plate is matched with the fixed convex part to clamp and fix the sealing column core on the boss of the cylindrical shell;
an air exhaust channel communicated with the through hole and the container is arranged on the fixed convex part or the cylindrical shell contacted with the fixed convex part;
the sealing column core is positioned in the through hole and is in clearance fit with the through hole, and the air exhaust hole is a clearance between the sealing column core and the through hole;
the sealing column core is made of elastic plastic materials integrally; the sealed post core still include:
a hollow display cavity arranged in the sealing column core near the upper end;
the air inlet is arranged on the lower end face of the sealing column core;
the air guide channel is arranged in the sealing column core and is used for communicating the display cavity with the air inlet;
when the pressure in the container is smaller than the pressure outside the cylindrical shell, the volume of the display cavity is reduced under the action of the pressure, so that the upper end surface of the sealing column core generates elastic deformation downwards; when the pressure in the container is equal to the pressure outside the cylindrical shell, the upper end surface of the sealing column core is restored to the initial state under the action of elastic deformation.
6. The evacuation structure of claim 1, wherein said sealing core is made of an elastic plastic material; wherein,
the upper section and the middle section of the sealing column core are a continuous reducer, the diameter of the upper section of the sealing column core at least corresponding to the top dead center of the piston is larger than that of the air vent of the piston, and the diameter of the middle section of the sealing column core at least corresponding to the bottom dead center of the piston is smaller than that of the air vent of the piston; or,
the middle section of the sealing column core is a continuous variable diameter body, and the diameter of the middle section of the sealing column core at least corresponding to the lower dead point of the piston is smaller than that of the air vent of the piston.
7. The vacuum pumping structure as claimed in claim 1, wherein the piston is a cylindrical piston cap with a downward opening, a sealing groove is formed at the lower end of the cylindrical outer surface of the cylindrical piston cap, and a sealing ring hermetically sealed with the inner wall surface of the chamber of the cylindrical shell is arranged in the sealing groove; and the upper end of the cylindrical shell is provided with a limiting structure for limiting the movement of the cylindrical piston cover.
8. A sealed core, comprising:
the upper section is a sealing section and forms air seal with a piston vent hole running in the section;
the middle section, the air discharging section and the air discharging hole of the piston running in the section form an air discharging structure;
the lower section is provided with a sealing cover plate which is arranged in the radial direction, and the sealing cover plate is matched with the matched air suction hole or the sealing valve seat to form a one-way valve.
9. A vacuum fresh-keeping cover, comprising a cover body, characterized in that the cover body is provided with a vacuum-pumping structure as claimed in any one of claims 1 to 7; the cylindrical shell is a part of a cover body or a container body, and the air suction hole is directly communicated with the inside of the container or communicated with the inside of the container through an air guide channel.
10. A vacuum refreshing container, comprising a container body, wherein the container body is provided with a vacuumizing structure according to any one of claims 1 to 7; the cylindrical shell is a part of a cover body or a container body, and the air suction hole is directly communicated with the inside of the container or communicated with the inside of the container through an air guide channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620572741.1U CN205931771U (en) | 2016-06-14 | 2016-06-14 | Vacuum structure , vacuum refreshing lid, sealed post core and vacuum refreshing container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620572741.1U CN205931771U (en) | 2016-06-14 | 2016-06-14 | Vacuum structure , vacuum refreshing lid, sealed post core and vacuum refreshing container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205931771U true CN205931771U (en) | 2017-02-08 |
Family
ID=57933093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620572741.1U Withdrawn - After Issue CN205931771U (en) | 2016-06-14 | 2016-06-14 | Vacuum structure , vacuum refreshing lid, sealed post core and vacuum refreshing container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205931771U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043936A (en) * | 2016-06-14 | 2016-10-26 | 陈林 | Vacuumizing structure, vacuum refreshing cover and vacuum refreshing container |
| CN107814084A (en) * | 2017-10-23 | 2018-03-20 | 陈广友 | A kind of sealing container |
-
2016
- 2016-06-14 CN CN201620572741.1U patent/CN205931771U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043936A (en) * | 2016-06-14 | 2016-10-26 | 陈林 | Vacuumizing structure, vacuum refreshing cover and vacuum refreshing container |
| CN106043936B (en) * | 2016-06-14 | 2018-06-29 | 陈林 | Vacuuming structure, vacuum refreshing lid and vacuum fresh-retaining container |
| CN107814084A (en) * | 2017-10-23 | 2018-03-20 | 陈广友 | A kind of sealing container |
| CN107814084B (en) * | 2017-10-23 | 2024-03-22 | 陈广友 | Sealed container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170208 Effective date of abandoning: 20180629 |
|
| AV01 | Patent right actively abandoned |