CN112901478A

CN112901478A - Plunger pump

Info

Publication number: CN112901478A
Application number: CN202110227282.9A
Authority: CN
Inventors: 韦文术; 刘昊; 李然; 郭新伟; 刘波; 王剑强; 王大龙; 赵中梅; 张晶晶
Original assignee: Beijing Tiandi Marco Electro Hydraulic Control System Co Ltd; Beijing Meike Tianma Automation Technology Co Ltd
Current assignee: Beijing Tiandi Marco Electro Hydraulic Control System Co Ltd; Beijing Meike Tianma Automation Technology Co Ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-06-04
Also published as: WO2022183771A1

Abstract

The invention discloses a plunger pump, which comprises a box body, a crankshaft, a driving shaft and a plurality of connecting rods, a chute is arranged in the box body, a cavity is arranged in the box body and comprises a first cavity and a second cavity, the crankshaft is rotatably arranged on the box body in a penetrating way, the crankshaft is positioned in the first chamber, a plurality of first gears are arranged on the crankshaft, the driving shaft is rotatablely arranged on the box body in a penetrating way, the driving shaft is positioned in the second chamber, a plurality of second gears are arranged on the driving shaft, the plurality of second gears are meshed with the plurality of first gears in a one-to-one correspondence manner, one end of the connecting rod is rotatably connected with the crankshaft, a sliding block is arranged at the other end of the connecting rod, the sliding block is matched in the sliding groove, and the connecting rod can drive the sliding block to reciprocate in the sliding groove. The plunger pump has the characteristics of simple structure, large flow, safety and reliability.

Description

Plunger pump

Technical Field

The invention relates to the technical field of mechanical engineering hydraulic pressure, in particular to a plunger pump.

Background

At present, a hydraulic power source designed for fully mechanized coal mining face supporting equipment of a large-scale coal enterprise generally uses a high-pressure large-flow emulsion pump, and the continuity, stability and reliability of the work of the pump directly influence the production and economic benefits of the coal enterprise. With the development of coal mining technology towards high technology, new requirements are provided for an emulsion pump station, the flow and pressure of the pump are guaranteed, the service life and the reliability of the pump are guaranteed, and the fault-free working time is prolonged.

Disclosure of Invention

The present invention is based on the discovery and recognition by the inventors of the following facts and problems:

the large-traffic emulsion pump uses the plunger pump form to carry out power and provides more, and under the condition that the rotational speed of plunger pump improves, can increase the flow supply, but when improving the rotational speed, can make the lubricating oil in the pump splash, influence empty intake effect of straining, the fastening connection of box also can receive the influence along with the promotion of rotational speed simultaneously, very easily takes place the incident.

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the invention provides a plunger pump which can be firmly connected, efficiently intakes air, and is safe and reliable.

The plunger pump comprises a box body, a crankshaft, a driving shaft and a plurality of connecting rods, wherein a sliding groove is formed in the box body, a cavity is formed in the box body, the cavity comprises a first cavity and a second cavity, the crankshaft is rotatably arranged on the box body in a penetrating mode and is located in the first cavity, a plurality of first gears are arranged on the crankshaft, the driving shaft is rotatably arranged on the box body in a penetrating mode and is located in the second cavity, a plurality of second gears are arranged on the driving shaft and are meshed with the first gears in a one-to-one corresponding mode, one end of each connecting rod is rotatably connected with the crankshaft, a sliding block is arranged at the other end of each connecting rod, the sliding blocks are matched in the sliding groove, and the connecting rods can drive the sliding blocks to reciprocate in the sliding groove.

The plunger pump provided by the embodiment of the invention can bear high-speed operation to increase the pumping flow, and has the characteristics of stable operation, safety and reliability.

In some embodiments, the box body includes a first box body and a second box body, the first box body is provided with a first groove and a second groove, the second box body is provided with a third groove and a fourth groove, the first box body and the second box body are connected, the first groove and the third groove form a first chamber relatively, and the second groove and the fourth groove form a second chamber relatively.

In some embodiments, the first groove bottom is filled with a lubricating oil.

In some embodiments, the first and second housings are positioned and fixedly coupled together by fasteners.

In some embodiments, the fastener includes a positioning flange for positioning the positions of the first and second cases and a fixing bolt that passes through the second case and fixes the second case to the first case.

In some embodiments, a plurality of lubricating oil passages are formed in the crankshaft, a plurality of lubricating oil holes are formed in the surface of the crankshaft, and lubricating oil is filled in the lubricating oil passages and used for lubricating the crankshaft.

In some embodiments, the lubricating oil channel comprises a straight hole and an inclined hole, and the included angle between the straight hole and the inclined hole is greater than 120 degrees.

In some embodiments, the plunger pump further includes an air filter disposed on the box and connected to the first chamber for introducing air into the first chamber.

In some embodiments, the air filter further comprises a baffle located outside the air filter for protecting the air filter.

In some embodiments, the tank is made of cast iron.

Drawings

Fig. 1 is a schematic structural view of a plunger pump according to an embodiment of the present invention.

Fig. 2 is a left side view of a plunger pump of an embodiment of the present invention.

Fig. 3 is a schematic structural view of the first case of the plunger pump according to the embodiment of the present invention.

FIG. 4 is a cross-sectional view of a chamber of a plunger pump of an embodiment of the present invention.

Fig. 5 is a schematic structural view of a fastener of the plunger pump according to the embodiment of the present invention.

Fig. 6 is a schematic structural view of an air filter of the plunger pump according to the embodiment of the present invention.

FIG. 7 is a front view of a crankshaft of an embodiment of the present invention.

FIG. 8 is a top view of a crankshaft of an embodiment of the present invention.

Fig. 9 is a schematic diagram showing the inclined state of the crankshaft in the embodiment of the present invention.

Reference numerals:

the first gear 21, the lubricating oil channel 22, the lubricating oil hole 221, the straight hole 222, the inclined hole 223, the driving shaft 3, the second gear 31, the connecting rod 4, the slider 41, the fastener 5, the positioning flange 51, the fixing bolt 52, the air filter 6, and the baffle 61.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A plunger pump according to an embodiment of the present invention is described below with reference to the drawings.

The plunger pump according to the embodiment of the invention comprises a box body 1, a crankshaft 2, a driving shaft 3 and a plurality of connecting rods 4, wherein a chute 11 is arranged in the box body 1, a chamber 12 is arranged in the box body 1, the chamber 12 comprises a first chamber 121 and a second chamber 122, the crankshaft 2 is rotatably arranged on the box body 1 in a penetrating way, the crankshaft 2 is positioned in the first chamber 121, the crankshaft 2 is provided with a plurality of first gears 21, the driving shaft 3 is rotatably arranged on the box body 1 in a penetrating way, the driving shaft 3 is positioned in the second chamber 122, the driving shaft 3 is provided with a plurality of second gears 31, the plurality of second gears 31 are meshed with the plurality of first gears 21 in a one-to-one correspondence way, one end of each connecting rod 4 is rotatably connected with the crankshaft 2, the other end of each connecting rod 4 is provided with a sliding block 41, the sliding block 41 is matched in.

As shown in fig. 1-3, a crankshaft 2 and a driving shaft 3 penetrate through a box body 1 in the left-right direction, the crankshaft 2 is parallel to the driving shaft 3, a plurality of first gears 21 are arranged on the crankshaft 2, a plurality of second gears 31 are arranged on the driving shaft 3, the second gears 31 are meshed with the first gears 21, the driving shaft 3 is connected with a driver, the driver drives the driving shaft 3 to rotate, the second gears 31 rotate along with the driving shaft 3, the first gears 21 synchronously rotate, the first gears 21 drive the crankshaft 2 to rotate, a connecting rod 4 connected to the crankshaft 2 rotates, a sliding block 41 connected with the connecting rod 4 moves back and forth in a sliding groove 11, and pumping is completed.

In some embodiments, the case 1 includes a first case 13 and a second case 14, the first case 13 is provided with a first groove 131 and a second groove 132, the second case 14 is provided with a third groove 141 and a fourth groove 142, the first case 13 and the second case 14 are connected, the first groove 131 and the third groove 141 are opposite to each other to form the first chamber 121, and the second groove 132 and the fourth groove 142 are opposite to each other to form the second chamber 122.

As shown in fig. 1 to 4, the first casing 13 is coupled to the second casing 14 in opposition, the inner wall of the first chamber 121 is formed by the first groove 131 and the third groove 141, and the inner wall of the second chamber 122 is formed by the second groove 132 and the fourth groove 142, dividing the casing 1 into the first casing 13 and the second casing 14 facilitates assembly and maintenance.

In some embodiments, the bottom of the first groove 131 is filled with lubricating oil. There is lubricating oil in the bottom of first groove 131, and when bent axle 2 rotated in first cavity 121, can drive lubricating oil and carry out splash lubrication, guaranteed the normal work of first gear 21.

In some embodiments, the first housing 13 and the second housing 14 are positioned and fixedly coupled together by fasteners 5. The connection face of first box 13 and second box 14 becomes 45 degrees contained angles with the horizontal direction, fixes a position through needs between first box 13 and the second box 14 in order to guarantee the precision of assembly, will carry out fixed connection simultaneously to prevent that high-speed rotation from causing the part to deviate from, arouse the incident.

In some embodiments, the fastener 5 includes a positioning flange 51 and a fixing bolt 52, the positioning flange 51 is used for positioning the positions of the first case 13 and the second case 14, and the fixing bolt 52 passes through the second case 14 and fixes the second case 14 to the first case 13. As shown in fig. 1 to 6, the left and right ends of the crankshaft 2 and the driving shaft 3 are provided with positioning flanges 51 for positioning the mounting positions of the crankshaft 2 and the driving shaft 3, so that the assembly accuracy is ensured, meanwhile, the second box 14 is provided with a plurality of fixing holes, fixing bolts 52 fix the second box 14 on the first box 13 through the fixing holes, and the bolt connection is adopted to ensure the fixing strength and is beneficial to later maintenance.

In some embodiments, a plurality of lubricating oil passages 22 are formed in the crankshaft 2, a plurality of lubricating oil holes 221 are formed in the surface of the crankshaft 2 by the lubricating oil passages 22, and lubricating oil is filled in the lubricating oil passages 22 and used for lubricating the crankshaft 2. As shown in fig. 7 to 9, a lubricating oil passage 22 is provided in the crankshaft 2, the lubricating oil passage 22 penetrates the surface of the crankshaft 2 to form a lubricating oil hole 221, and the lubricating oil flows out through the lubricating oil passage 22 through the lubricating oil hole 221 to lubricate the crankshaft 2.

In some embodiments, the oil passage 22 includes a straight hole 222 and an inclined hole 223, and the angle between the straight hole 222 and the inclined hole 223 is greater than 120 degrees. As shown in fig. 7-9, the included angle between the straight hole 222 and the inclined hole 223 in the lubricating oil passage 22 is greater than 120 degrees, so that the severe change of the motion direction of the lubricating oil caused by the passing of the liquid at an acute angle is avoided, and more stable lubricating output and less pressure loss can be obtained.

In some embodiments, the plunger pump further comprises an air filter 6, and the air filter 6 is disposed on the case 1 and connected to the first chamber 121 for introducing air into the first chamber 121. As shown in fig. 1 to 6, an air filter 6 is disposed at the top of the first chamber 121, and the air filter 6 filters air entering the first chamber 121 to prevent foreign matters in the air from entering the first chamber 121.

In some embodiments, the air filter 6 further comprises a baffle 61, the baffle 61 being located outside the air filter 6 for protecting the air filter 6. As shown in fig. 6, the baffle 61 has hinges and openings, so as to protect the air filter 6 and prevent air from entering.

In some embodiments, the tank 1 is made of cast iron. The cast iron has good mechanical property and economic value, and is suitable for manufacturing the box body 1.

Directional drilling residue blowout prevention systems of some specific examples of the present invention are described below with reference to fig. 1-9.

The plunger pump according to the embodiment of the present invention includes a case 1, a crankshaft 2, a drive shaft 3, a plurality of connecting rods 4, a fastening member 5, and an air filter 6.

As shown in fig. 1-9, a crankshaft 2 and a driving shaft 3 penetrate through a box body 1 in the left-right direction, the crankshaft 2 is parallel to the driving shaft 3, a plurality of first gears 21 are arranged on the crankshaft 2, a plurality of second gears 31 are arranged on the driving shaft 3, the second gears 31 are meshed with the first gears 21, the driving shaft 3 is connected with a driver, the driver drives the driving shaft 3 to rotate, the second gears 31 rotate along with the driving shaft 3, the first gears 21 synchronously rotate, the first gears 21 drive the crankshaft 2 to rotate, a connecting rod 4 connected to the crankshaft 2 rotates, a sliding block 41 connected with the connecting rod 4 moves back and forth in a sliding groove 11, and pumping is completed.

Be equipped with many lubricated oil ducts 22 in the bent axle 2, lubricated oil duct 22 wears out bent axle 2 surface and forms lubricated oil hole 221, and lubricating oil is lubricated bent axle 2 through lubricated oil duct 22 outflow through lubricated oil hole 221, and the contained angle of straight hole 222 and inclined hole 223 in the lubricated oil duct 22 is greater than 120 degrees, avoids the acute change of lubricated fluid direction of motion that the acute angle crossed the liquid and caused to improve bent axle 2's rotational speed safely and stably, increase the flow of plunger pump.

The case 1 includes a first case 13 and a second case 14, the first case 13 is provided with a first groove 131 and a second groove 132, the second case 14 is provided with a third groove 141 and a fourth groove 142, the first case 13 and the second case 14 are oppositely coupled together, an inner wall of the first chamber 121 is formed by the first groove 131 and the third groove 141, and an inner wall of the second chamber 122 is formed by the second groove 132 and the fourth groove 142.

The fastening member 5 connects the first casing 13 and the second casing 14 together, the fastening member 5 includes a positioning flange 51 and a fixing bolt 52, as shown in fig. 1 to 6, the positioning flange 51 is provided at both left and right ends of the crankshaft 2 and the driving shaft 3 to position the installation positions of the crankshaft 2 and the driving shaft 3, so as to ensure the accuracy of assembly, and a plurality of fixing holes are provided in the second casing 14, and the fixing bolt 52 fixes the second casing 14 to the first casing 13 through the fixing holes.

The air filter 6 is disposed on the top of the first chamber 121, and the air filter 6 filters air entering the first chamber 121 to prevent foreign matters in the air from entering the first chamber 121.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A plunger pump, comprising:

the device comprises a box body, wherein a sliding groove is formed in the box body, a cavity is formed in the box body, and the cavity comprises a first cavity and a second cavity;

the crankshaft is rotatably arranged on the box body in a penetrating mode and located in the first cavity, and a plurality of first gears are arranged on the crankshaft;

the driving shaft is rotatably arranged on the box body in a penetrating mode and is located in the second cavity, a plurality of second gears are arranged on the driving shaft, and the plurality of second gears are meshed with the plurality of first gears in a one-to-one corresponding mode;

one end of the connecting rod is rotatably connected with the crankshaft, a sliding block is arranged at the other end of the connecting rod, the sliding block is matched in the sliding groove, and the connecting rod can drive the sliding block to reciprocate in the sliding groove.

2. The plunger pump of claim 1, wherein the casing comprises a first casing and a second casing, the first casing is provided with a first groove and a second groove, the second casing is provided with a third groove and a fourth groove, the first casing and the second casing are connected, the first groove and the third groove are opposite to each other to form a first chamber, and the second groove and the fourth groove are opposite to each other to form a second chamber.

3. The plunger pump of claim 2, wherein the first groove bottom is filled with lubricating oil.

4. The plunger pump of claim 2, wherein the first housing and the second housing are positioned and fixedly coupled together by fasteners.

5. The plunger pump according to claim 4, wherein the fastener includes a positioning flange for positioning the positions of the first casing and the second casing, and a fixing bolt that passes through the second casing and fixes the second casing to the first casing.

6. The plunger pump as claimed in claim 1, wherein a plurality of oil passages are formed in the crankshaft, the oil passages form a plurality of oil holes in a surface of the crankshaft, and the oil passages are filled with oil for lubricating the crankshaft.

7. The plunger pump of claim 6, wherein the oil passage comprises a straight hole and an inclined hole, and the included angle between the straight hole and the inclined hole is more than 120 degrees.

8. The plunger pump of claim 1, further comprising an air filter disposed on the housing and connected to the first chamber for venting air into the first chamber.

9. The plunger pump of claim 8, wherein the air filter further comprises a baffle located outside the air filter for protecting the air filter.

10. The plunger pump of claim 1 wherein said housing is made of cast iron.