CN210738760U

CN210738760U - Low-noise reciprocating vacuum pump

Info

Publication number: CN210738760U
Application number: CN201921891263.0U
Authority: CN
Inventors: 王义明
Original assignee: Allslorm Pumps Jiangsu Co ltd
Current assignee: Allslorm Pumps Jiangsu Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-06-12
Anticipated expiration: 2029-11-05

Abstract

The utility model discloses a low noise reciprocating vacuum pump relates to vacuum pump technical field, which comprises a pump body, one side fixedly connected with pump band pulley of the pump body, the outside fixed mounting of the pump body has the bearing cap, one side fixedly connected with bearing housing of bearing cap, the one end fixed mounting of the pump body has the back lid, the other end fixedly connected with cylinder of the pump body, the pump body and the equal fixedly connected with backing plate in bottom of cylinder, the equal fixedly connected with supporting shoe in bottom both sides of backing plate, the bottom fixedly connected with base of supporting shoe. The utility model discloses low noise reciprocating vacuum pump through the backing plate, has avoided with the direct contact on ground, the rethread base to can reduce the vibration of the pump body, solve the great and great problem of noise of vibration, through the piston ring, can reduce the wearing and tearing to the piston, thereby reduce manufacturing cost, improve production efficiency, also solve the comparatively serious problem of wearing and tearing of piston.

Description

Low-noise reciprocating vacuum pump

Technical Field

The utility model relates to a vacuum pump technical field specifically is a low noise reciprocating vacuum pump.

Background

The vacuum pump refers to a device or equipment for obtaining vacuum by pumping a pumped container by using a mechanical, physical, chemical or physicochemical method. Conventionally, vacuum pumps are devices for improving, generating and maintaining vacuum in a closed space by various methods, and most of the vacuum pumps commonly used are reciprocating vacuum pumps, which are also called piston vacuum pumps, dry vacuum pumps, which suck and discharge gas by means of reciprocating motion of a piston in a cylinder.

When the existing reciprocating vacuum pump works, the vibration is large, the noise is large, the abrasion of a piston is serious, the production cost is increased, and the production efficiency is reduced.

Therefore, it is desirable to provide a low noise reciprocating vacuum pump to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low noise reciprocating vacuum pump to propose the comparatively serious problem of wearing and tearing of the great, great and piston of current low noise reciprocating vacuum pump vibration in solving above-mentioned background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a low-noise reciprocating vacuum pump comprises a pump body, wherein a pump belt wheel is fixedly connected to one side of the pump body, a bearing cover is fixedly mounted on the outer side of the pump body, a bearing shell is fixedly connected to one side of the bearing cover, a rear cover is fixedly mounted at one end of the pump body, a cylinder is fixedly connected to the other end of the pump body, a backing plate is fixedly connected to the bottom of the pump body, supporting blocks are fixedly connected to both sides of the bottom of the backing plate, a base is fixedly connected to the bottom of each supporting block, a crankshaft is fixedly mounted on one side, close to the inner wall, of the pump body, a connecting rod bush shaft is fixedly connected to the middle of the crankshaft, a connecting rod is fixedly connected to one end of the connecting rod bush shaft, a cross pin head is fixedly connected to one end of the connecting rod, a cross head is fixedly connected, the piston is arranged in the cylinder, a piston ring is fixedly connected to the outer side of the piston, a protective cover is fixedly connected to the top of the cylinder, and an exhaust port and an air inlet are respectively and fixedly arranged in the protective cover.

Optionally, the number of the backing plates is two, and the two backing plates are arranged in a straight line.

Optionally, the number of the supporting blocks is four, and the four supporting blocks are arranged in a straight line.

Optionally, one side of the exhaust port is fixedly connected with an exhaust valve, and one side of the air inlet is fixedly connected with an air inlet valve.

Optionally, the exhaust port and the air inlet are symmetrically arranged.

Optionally, a chromium plating layer is fixedly connected to the outer side of the piston ring.

Optionally, the top wall and the bottom wall of the base are both fixedly connected with support plates, and springs are fixedly connected between the support plates.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a bottom fixedly connected with backing plate of the pump body has avoided the direct contact with ground, the spring that the inside of rethread base was equipped with to can reduce the vibration of the pump body, thereby reach the effect of noise reduction, solved the great and great problem of noise of vibration.

2. The utility model discloses a chromium-plated layer that the outside of piston ring was equipped with can reduce the wearing and tearing to the piston ring body at the during operation, has reached the effect that reduces piston ring wearing and tearing, through the wearing and tearing that reduce the piston ring, can reduce the wearing and tearing to the piston to reduce manufacturing cost, improved production efficiency, also solved the comparatively serious problem of wearing and tearing of piston.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic sectional view of the structure of the present invention;

FIG. 3 is a schematic cross-sectional view of the base structure of the present invention;

fig. 4 is an enlarged schematic view of the structure at a in fig. 2 according to the present invention.

In the figure: 1. a base; 2. a cylinder; 3. a pump pulley; 4. a support block; 5. a base plate; 6. a protective cover; 7. an exhaust port; 8. an air inlet; 9. an exhaust valve; 10. an intake valve; 11. a piston; 12. a piston rod; 13. a cylinder neck; 14. a crosshead; 15. a cross pin head; 16. a bearing cap; 17. a crankshaft; 18. a connecting rod bush shaft; 19. a rear cover; 20. a connecting rod; 21. a bearing housing; 22. a piston ring; 23. a chromium plating layer; 24. a support plate; 25. a spring; 26. and a pump body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The utility model provides a low-noise reciprocating vacuum pump as shown in figures 1-4, one side of the pump body 26 is fixedly connected with a pump belt wheel 3, the pump body 26 is connected with an external motor, the outer side of the pump body 26 is fixedly provided with a bearing cover 16, one side of the bearing cover 16 is fixedly connected with a bearing shell 21, one end of the pump body 26 is fixedly provided with a rear cover 19, the other end of the pump body 26 is fixedly connected with a cylinder 2, the bottom of the pump body 26 and the cylinder 2 is fixedly connected with backing plates 5, the backing plates 5 are two, the two backing plates 5 are arranged in a straight line, the direct contact with the ground is avoided through the bottom fixedly connected with the backing plates 5 of the pump body 26, both sides of the bottom of the backing plates 5 are fixedly connected with supporting blocks 4, the number of the supporting blocks 4 is four, the four supporting blocks 4 are arranged in a straight line, the bottom of the, the spring 25 is fixedly connected between the support plates 24, the spring 25 is arranged in the base 1, so that the vibration of the pump body 26 can be reduced, and the effect of reducing noise is achieved, and the problems of large vibration and large noise are solved, a crankshaft 17 is fixedly arranged on one side, close to the inner wall, of the pump body 26, a connecting rod bush shaft 18 is fixedly connected to the middle of the crankshaft 17, a connecting rod 20 is fixedly connected to one end of the connecting rod bush shaft 18, a cross pin head 15 is fixedly connected to one end of the connecting rod 20, a cross head 14 is fixedly connected to the outer side of the cross pin head 15, a piston rod 12 is fixedly connected to one end of the cross head 14, a cylinder neck 13 is fixedly connected to one end of the cylinder 2, a piston 11 is arranged in the cylinder 2, a piston ring 22 is fixedly connected to the outer side of the piston 11, a chromium coating 23 is fixedly connected to the outer side of the piston, reached the effect that reduces piston ring 22 wearing and tearing, wearing and tearing through reducing piston ring 22, can reduce the wearing and tearing to piston 11, thereby manufacturing cost has been reduced, and the production efficiency is improved, the comparatively serious problem of wearing and tearing of piston 11 has also been solved, the top fixedly connected with protection casing 6 of cylinder 2, the inside fixed mounting respectively of protection casing 6 has gas vent 7 and air inlet 8, gas vent 7 is symmetrical arrangement with air inlet 8, one side fixedly connected with discharge valve 9 of gas vent 7, one side and the fixedly connected with admission valve 10 of air inlet 8.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

This practical theory of operation: when the air pumping device works, the piston 11 in the air cylinder 2 does reciprocating motion under the action of the crankshaft 17, the connecting rod bush shaft 18 and the connecting rod 20 under the driving of the motor, the density of air in the air cylinder 2 is reduced due to the fact that the volume of a left cavity of the air cylinder 2 is increased from time to time, an air pumping process is formed, at the moment, the air enters the air cylinder 2 through the air inlet 8 and the air inlet valve 10, and when the piston 11 reaches the rightmost position, the air is completely filled in the air cylinder 2. The piston 11 then moves from the right end to the left end, with the inlet valve 10 closed. The gas in the cylinder 2 is gradually contracted as the piston 11 moves from right to left, and when the pressure of the gas in the cylinder 2 reaches an atmospheric pressure, the exhaust valve 9 is opened to exhaust the gas to the atmosphere through the exhaust port 7, thereby completing a working cycle. When the piston 11 moves from left to right again, a part of gas is sucked in again, the previous cycle is repeated, and the pump body 26 can work normally.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A low noise reciprocating vacuum pump comprising a pump body (26), characterized in that: the pump comprises a pump body (26), a pump belt wheel (3) is fixedly connected to one side of the pump body (26), a bearing cover (16) is fixedly mounted on the outer side of the pump body (26), a bearing shell (21) is fixedly connected to one side of the bearing cover (16), a rear cover (19) is fixedly mounted at one end of the pump body (26), an air cylinder (2) is fixedly connected to the other end of the pump body (26), backing plates (5) are fixedly connected to the bottoms of the pump body (26) and the air cylinder (2), supporting blocks (4) are fixedly connected to two sides of the bottom of each backing plate (5), a base (1) is fixedly connected to the bottom of each supporting block (4), a crankshaft (17) is fixedly mounted on one side, close to the inner wall, of the pump body (26), a connecting rod bush shaft (18) is fixedly connected to the middle of the crankshaft (17), a connecting rod (20) is fixedly connected to one end, the outside fixedly connected with cross head (14) of cross round pin head (15), the one end fixedly connected with piston rod (12) of cross head (14), the one end fixedly connected with cylinder neck (13) of cylinder (2), the inside of cylinder (2) is equipped with piston (11), the outside fixedly connected with piston ring (22) of piston (11), the top fixedly connected with protection casing (6) of cylinder (2), the inside difference fixed mounting of protection casing (6) has gas vent (7) and air inlet (8).

2. A low noise reciprocating vacuum pump according to claim 1, wherein:

the number of the backing plates (5) is two, and the two backing plates (5) are arranged in a straight line.

3. A low noise reciprocating vacuum pump according to claim 1, wherein:

the number of the supporting blocks (4) is four, and the four supporting blocks (4) are arranged in a straight line.

4. A low noise reciprocating vacuum pump according to claim 1, wherein:

one side fixedly connected with discharge valve (9) of gas vent (7), one side and the fixedly connected with admission valve (10) of air inlet (8).

5. A low noise reciprocating vacuum pump according to claim 1, wherein:

the exhaust port (7) and the air inlet (8) are symmetrically arranged.

6. A low noise reciprocating vacuum pump according to claim 1, wherein:

the outer side of the piston ring (22) is fixedly connected with a chromium coating (23).

7. A low noise reciprocating vacuum pump according to claim 1, wherein:

both the top wall and the bottom wall of the interior of the base (1) are fixedly connected with support plates (24), and springs (25) are fixedly connected between the support plates (24).