CN216741926U

CN216741926U - Oil-free pump convenient to install and maintain

Info

Publication number: CN216741926U
Application number: CN202123031846.6U
Authority: CN
Inventors: 樊忠; 樊挺杰
Original assignee: Nantong Longying Vacuum Technology Co ltd
Current assignee: Nantong Longying Vacuum Technology Co ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-06-14
Anticipated expiration: 2031-12-06

Abstract

The utility model discloses a non-oil pump with convenient installation and maintenance, which is applied in the field of vacuum pumps and solves the technical problem that the existing vacuum pump is difficult to install and maintain; the pump body comprises an oil cylinder, a separating cylinder and an air cylinder which are arranged on the base in sequence; the two opposite sides of the cylinder are provided with an air inlet and an air outlet; an air inlet valve and an air outlet valve which are arranged on the side wall of the cylinder are arranged at the air inlet and the air outlet; the separating cylinder is detachably connected with the oil cylinder; a piston rod is arranged in the oil cylinder in a sliding manner, one end of the piston rod is detachably connected with a connecting rod, and the connecting rod is connected with a piston arranged in the air cylinder in a sliding manner; an inspection window is fixed on the side wall of the isolating cylinder through a bolt; the oil cylinder has the technical effects that the partition cylinder is detachably connected with the oil cylinder, so that the partition cylinder and the oil cylinder are convenient to overhaul and replace; the inspection window is arranged on the side wall of the isolating cylinder, so that the piston rod and the connecting rod can be conveniently detached; the pneumatic valve sets up at cylinder lateral wall, need not ascend a height to no oil pump top during the maintenance, reduces and overhauls the degree of difficulty.

Description

Oil-free pump convenient to install and maintain

Technical Field

The utility model relates to a vacuum pump field, in particular to convenient oilless pump is maintained in installation.

Background

The vacuum pump is a device or equipment for obtaining vacuum by pumping a pumped container by using a mechanical, physical, chemical or physical-chemical method; an oilless pump is a mechanical vacuum pump that can operate without any oil lubrication.

At present, chinese patent application with publication number CN110030173A discloses an oilless vertical vacuum pump, which comprises a pump body, the pump body includes the base, be equipped with the cylinder in the pump body, the piston rod is connected to the cylinder, be equipped with the baffle between the piston rod and the pump body, be equipped with the through-hole with piston rod looks adaptation on the baffle, be equipped with the sealing washer with piston rod looks adaptation in the through-hole, be equipped with the isolation chamber between the pump body and the base, it is equipped with the runner to keep apart between chamber and the base, the runner is connected with the action wheel of base opposite side through the rotating band, the base is equipped with the universal wheel, be equipped with damping spring between universal wheel and the base.

This kind of does not have oily vertical vacuum pump has realized the function of bleeding, but in the use of reality, does not have oily vertical vacuum pump itself the size longer and generally use with other equipment cooperations, causes the high too high of vacuum pump after the installation, discharge valve and the general vertical setting of admission valve simultaneously, under this kind of condition, discharge valve and admission valve damage just need ascend a height the operation climbing to discharge valve's top and overhaul discharge valve and admission valve, have dangerous and extravagant workman's time and energy.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a convenient oilless pump is maintained in installation, its advantage is convenient for install and overhaul oilless pump.

The above technical purpose of the present invention can be achieved by the following technical solutions: a oilless pump with convenient installation and maintenance comprises a base and a pump body arranged on the base; the pump body comprises an oil cylinder fixedly connected with the base, a separation cylinder arranged above the oil cylinder and an air cylinder arranged above the separation cavity; the two opposite sides of the cylinder are provided with an air inlet and an air outlet; an air inlet valve is arranged at the air inlet, an exhaust valve is arranged at the exhaust port, and the air inlet valve and the exhaust valve are both arranged on the side wall of the cylinder; the separating cylinder is detachably connected with the oil cylinder; a piston rod is arranged in the oil cylinder in a sliding manner, a connecting rod is detachably connected to one end, close to the partition cylinder, of the piston rod, and a piston arranged in the air cylinder in a sliding manner is connected to one end, far away from the piston rod, of the connecting rod; the side wall of the separating cylinder is provided with an inspection window, and the inspection window is fixed on the side wall of the separating cylinder through a mounting bolt.

Through the technical scheme, the air inlet valve and the exhaust valve are arranged on the side wall of the air cylinder, and workers only need to approach the side wall of the air cylinder during maintenance and do not need to ascend to the top of the oil-free pump, so that the maintenance difficulty is reduced; the oil cylinder is detachably connected with the separating cylinder, so that the height of the oil-free pump is reduced conveniently during transportation, the oil cylinder is convenient to transport, and the separating cylinder and the oil cylinder are detachably connected and are also convenient to detach, so that the piston rod is convenient to expose, and the oil-free pump is convenient to overhaul; the piston rod is detachably connected with the connecting rod, and the connecting rod and the piston rod are detachably connected, so that the separation of the piston rod and the connecting rod is facilitated, the separation of the piston rod and the connecting rod is further facilitated, and the disassembly of the separation cylinder and the oil cylinder is further facilitated, and the integral maintenance, the installation and the disassembly of the oil-free pump are further facilitated; the inspection window is fixed on the side wall of the separating cylinder through a bolt, so that the operating conditions of the oil cylinder and the air cylinder can be judged conveniently by inspecting the conditions of the separating cylinder, and the piston rod and the connecting rod can be conveniently detached when the inspection window is opened.

The utility model discloses further set up to: a clamping plate is arranged at one end, close to the partition cylinder, of the oil cylinder along the circumferential direction, and a clamping groove matched with the clamping plate is formed at one end, close to the oil cylinder, of the partition cylinder; and fixing bolts for fixing the separating cylinder and the clamping plate are arranged on the separating cylinder and the clamping plate.

According to the technical scheme, the oil cylinder and the partition cylinder are connected in a clamping fit mode, the clamping plate is inserted into the clamping groove, and the oil cylinder and the partition cylinder are convenient for position location of the oil cylinder and the partition cylinder; the fixed bolt is connected with the oil cylinder and the separating cylinder, so that the oil cylinder and the separating cylinder are tightly fixed, and the oil cylinder and the separating cylinder are prevented from being separated.

The utility model discloses further set up to: the partition plate is arranged at one end, close to the oil cylinder, of the partition cylinder and is arranged above the clamping groove.

Through above-mentioned technical scheme, the baffle sets up in the top in joint groove, is convenient for seal the jar that separates, prevents that the lubricating oil infiltration in the hydro-cylinder from separating the jar.

The utility model discloses further set up to: the partition plate is provided with a sealing stuffing box, one end of the piston rod, which is close to the partition cylinder, penetrates through the sealing stuffing box and is connected with the connecting rod, and the piston rod is in threaded fit connection with the connecting rod.

Through the technical scheme, the piston rod is in threaded connection with the connecting rod, the threaded connection is high in connection strength and reliability, the working requirements of the piston for straight up and straight down are met, and meanwhile, the piston rod is convenient to disassemble; the sealing stuffing box is arranged on the partition plate to seal the separating cylinder and prevent lubricating oil in the oil cylinder from permeating into the separating cylinder.

The utility model discloses further set up to: and one ends of the piston rod and the connecting rod close to the joint are provided with hexagonal fixing blocks which are convenient for the piston rod and the connecting rod to be screwed tightly.

Through above-mentioned technical scheme, the setting of hexagonal fixed block is connected the pole at the piston rod with, is convenient for both screw, is convenient for both dismantlements simultaneously.

The utility model discloses further set up to: and a graphite packing is filled in the sealing packing box.

Through the technical scheme, the graphite packing is suitable for dynamic sealing under the high-temperature and high-pressure condition.

The utility model discloses further set up to: the piston is hollow, and inert gas is filled in the piston.

Through the technical scheme, the piston is hollow, so that the sound transmission of the piston is reduced, and the noise is reduced conveniently; the piston is filled with inert gas, so that the pressure difference with the atmosphere is reduced, and the piston is prevented from deforming.

The utility model discloses further set up to: and a sealing assembly is fixed on the outer side of the piston and comprises a piston ring, a guide ring and an expansion ring which are sequentially arranged on the outer side of the piston.

Through above-mentioned technical scheme, piston ring, guide ring and tension ring cover are established in the piston outside, strengthen the leakproofness of piston and cylinder, are convenient for bleed exhaust of cylinder.

To sum up, the utility model discloses following beneficial effect has:

1. the oil cylinder, the isolation cylinder, the piston rod, the connecting rod and the inspection window are arranged, the isolation cylinder is detachably connected with the oil cylinder, and the piston rod is detachably connected with the connecting rod, so that the isolation cylinder and the oil cylinder are conveniently detached; the inspection window is arranged on the side wall of the separating cylinder, so that the separating cylinder and the oil cylinder can be conveniently detached, and the installation and maintenance of the oil-free pump are further facilitated; the air valve is arranged on the side wall of the air cylinder, so that the air valve does not need to ascend to the top end of the oil-free pump during maintenance, and the maintenance difficulty is reduced;

2. by arranging the sealing assembly and the sealing packing box, the sealing assembly is arranged between the piston and the cylinder, so that the sealing performance of the piston and the cylinder is enhanced, and air suction and exhaust of the cylinder are facilitated; the sealing stuffing box is arranged on the partition plate to seal the separating cylinder and prevent lubricating oil in the oil cylinder from permeating into the separating cylinder.

Drawings

Fig. 1 is an overall configuration diagram of the present embodiment;

FIG. 2 is a schematic view of the internal structure of the present embodiment;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

fig. 4 is a schematic sectional structure view of the cylinder and the partition cylinder of the present embodiment.

Reference numerals: 1. a base; 2. a pump body; 3. a drive assembly; 4. a piston; 5. an air inlet; 6. an exhaust port; 7. a drive motor; 8. a piston rod; 9. a crank rocker structure; 10. a pulley set; 11. a driving wheel; 12. a driving wheel; 13. a belt; 14. a protective cover; 15. a slider; 16. a hinged column; 17. an oil cylinder; 18. separating the cylinder; 19. a cylinder; 20. an oil window; 21. a clamping and connecting plate; 22. connecting lugs; 23. fixing the bolt; 24. a viewing window; 25. an abutting portion; 26. a partition plate; 27. sealing the stuffing box; 28. a connecting rod; 29. a hexagonal fixing block; 30. an end cap; 31. a limiting plate; 32. an intake valve; 33. an exhaust valve; 34. a piston ring; 35. a guide ring; 36. and (4) an expansion ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

referring to fig. 1 and 2, the oil-free pump with convenient installation and maintenance comprises a base 1, a pump body 2 and a driving assembly 3, wherein the pump body 2 and the driving assembly 3 are arranged above the base 1, a piston 4 is arranged in the pump body 2, and an air inlet 5 and an air outlet 6 are formed in two sides of the pump body 2; the base 1 is used for fixing the pump body 2 and the driving component 3, the pump body 2 is arranged on one side of the base 1, and gas in the device to be vacuumized is extracted through auxiliary equipment such as a piston 4 and a gas valve and is discharged out of the pump body 2; the driving component 3 is arranged at the other side of the base 1 and drives the piston 4 in the pump body 2 to move up and down; the piston 4 is arranged in the pump body 2 in a sliding manner, and compresses and expands air in the pump body 2 through sliding; the air inlet 5 is arranged on one side of the pump body 2 and is used for sucking air in the device to be vacuumized; the exhaust port 6 is provided on the other side of the pump body 2, and exhausts the sucked gas out of the pump body 2.

Referring to fig. 1 and 2, the base 1 is a rectangular plate, and the driving assembly 3 includes a driving motor 7 fixed on the base 1, a piston rod 8 connected with the piston 4, a crank-rocker structure 9 connected with the piston rod 8, and a pulley set 10 connecting the crank-rocker structure 9 and the driving motor 7; the driving motor 7 is fixed at one end of the base 1 far away from the pump body 2, the belt pulley set 10 comprises a driving wheel 11 fixed on a main shaft of the driving motor 7, a transmission wheel 12 arranged at one side of the pump body 2 and a belt 13 connecting the driving wheel and the transmission wheel, and protective covers 14 are arranged at the outer sides of the driving wheel 11 and the transmission wheel 12; the crank and rocker structure 9 comprises a crank fixedly connected with the transmission wheel 12 and a rocker fixed on the crank, one end of the rocker far away from the crank is hinged with the piston rod 8, one end of the piston rod 8 close to the crank and rocker structure 9 is provided with a sliding block 15, a hinge column 16 penetrating through the sliding block 15 is fixed on the sliding block 15, the piston rod 8 is fixedly connected with the sliding block 15, and the sliding block 15 is connected with the pump body 2 in a sliding manner; the rocker of the crank rocker structure 9 is in rotational connection with the hinge post 16.

Referring to fig. 1, 2 and 3, the pump body 2 includes an oil cylinder 17 fixedly connected with the base 1, and a partition cylinder 18 and an air cylinder 19 sequentially arranged above the oil cylinder 17; the crank rocker structure 9 is arranged in the oil cylinder 17, oil windows 20 are arranged on two sides of the oil cylinder 17 close to and far away from the driving motor 7, and a self-lubricating oil cylinder is arranged on one side of the oil cylinder 17 far away from the driving wheel 12; one end of the oil cylinder 17 far away from the base 1 is circumferentially provided with a clamping and connecting plate 21; the separating cylinder 18 is arranged at the upper end of the oil cylinder 17, a clamping groove for inserting the clamping plate 21 is formed in one end, close to the oil cylinder 17, of the separating cylinder 18, the clamping plate 21 is inserted into the clamping groove, and a sealing gasket is arranged at the position of the clamping plate 21; the outer walls of the oil cylinder 17 and the partition cylinder 18 extend outwards along the circumferential direction to form connecting lugs 22, fixing bolts 23 are arranged on the connecting lugs 22, the fixing bolts 23 fix the oil cylinder 17 and the connecting lugs 22 on the partition cylinder 18, and the oil cylinder 17 and the partition cylinder 18 are further fixed; an inspection window 24 is arranged on the outer side of the isolation cylinder 18, and the inspection window 24 is fixed on the isolation cylinder 18 through bolts; an abutting part 25 extends inwards along the circumferential direction on the inner wall of one end, close to the oil cylinder 17, of the partition cylinder 18, a partition plate 26 is fixed on the abutting part 25, and the top end of the abutting part 25 is higher than the upper end face of the clamping groove; 5, a sealing stuffing box 27 is arranged at the center of the partition plate 26, one end of the piston rod 8 penetrates through the sealing stuffing box 27, and a graphite packing is filled in the sealing stuffing box 27; one end of the piston rod 8 extending out of the sealing packing box 27 is connected with a connecting rod 28; a bolt hole is formed in one end, connected with the connecting rod 28, of the piston rod 8, and a hexagonal fixing block 29 is arranged at the bolt hole formed in the piston rod 8; one end of the connecting rod 28 connected with the piston rod 8 is provided with an external thread matched with the threaded hole, and the outer side of the connecting rod 28 is also provided with a hexagonal fixing block 29; the end of the extension rod 28 remote from the piston rod 8 is fixedly connected to the piston 4.

Referring to fig. 1, 2 and 4, the cylinder 19 is arranged above the partition cylinder 18, the cylinder 19 and the partition cylinder 18 are integrally formed, an end cover 30 is arranged on the top of the cylinder 19, and the end cover 30 and the cylinder 19 are fixed by welding; a limit plate 31 is arranged between the partition cylinder 18 and the air cylinder 19, and the limit plate 31 is hollow; the piston 4 is arranged in the cylinder 19 in a sliding mode, and the piston 4 slides up and down between the end cover 30 and the limiting plate 31; the piston 4, the limiting plate 31 and the end cover 30 are hollow, and inert gas is filled in the piston 4 and the limiting plate 31; the air inlet 5 is provided with two groups of air inlet valves 32, and each group of air inlet valves 32 is provided with two groups; exhaust valves 33 are arranged at the exhaust port 6, two groups of exhaust valves 33 are arranged, and two exhaust valves 33 are arranged in each group; a sealing assembly is arranged between the piston 4 and the cylinder 19, and comprises a piston ring 34, a guide ring 35 and an expansion ring 36 which are fixed on the piston 4 from top to bottom.

Working process and principle of the embodiment

When vacuumizing: the driving motor 7 drives the driving wheel 11 to rotate, and further drives the belt 13 to rotate, the driving wheel 12 rotates along with the driving wheel, the crank rocker structure 9 moves along with the driving wheel, the piston shaft 8 moves downwards, the piston 4 is driven to slide downwards, at the moment, gas expands, the gas inlet valve 32 is opened, and the gas is sucked into the cylinder 19; then the crank rocker structure 9 continues to act, the piston 4 moves upwards, the gas is compressed, the exhaust valve 33 is opened, and the gas is exhausted out of the pump body 2;

during maintenance: when the piston 4 is overhauled, the inspection window 24 is opened, the connecting rod 28 is rotated, the connecting rod 28 is screwed out of the threaded hole of the piston rod 8, then the fixing bolt 23 is unscrewed, and the separating cylinder 18 and the cylinder 19 are taken down together with the connecting rod 28 and the piston 4, so that the interior of the cylinder 19 is convenient to overhaul; when repairing the air valve, a worker only needs to stand on the side wall of the cylinder 19 to repair the air intake valve 32 and the exhaust valve 33.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. An oil-free pump convenient to install and maintain comprises a base (1) and a pump body (2) arranged on the base (1); the pump body (2) comprises an oil cylinder (17) fixedly connected with the base (1), a separating cylinder (18) arranged above the oil cylinder (17) and an air cylinder (19) arranged above the separating cylinder (18); the two opposite sides of the cylinder (19) are provided with an air inlet (5) and an air outlet (6); the air cylinder is characterized in that an air inlet valve (32) is arranged at the air inlet (5), an exhaust valve (33) is arranged at the exhaust port (6), and the air inlet valve (32) and the exhaust valve (33) are both arranged on the side wall of the air cylinder (19); the separation cylinder (18) is detachably connected with the oil cylinder (17); a piston rod (8) is arranged in the oil cylinder (17) in a sliding manner, a connecting rod (28) is detachably connected to one end, close to the partition cylinder (18), of the piston rod (8), and a piston (4) arranged in the air cylinder (19) in a sliding manner is connected to one end, far away from the piston rod (8), of the connecting rod (28); an inspection window (24) is formed in the side wall of the separation cylinder (18), and the inspection window (24) is fixed on the side wall of the separation cylinder (18) through bolts.

2. The oilless pump convenient to mount and maintain as claimed in claim 1, wherein a clamping plate (21) is circumferentially arranged at one end of the oil cylinder (17) close to the partition cylinder (18), and a clamping groove matched with the clamping plate (21) is formed at one end of the partition cylinder (18) close to the oil cylinder (17); and the partition cylinder (18) and the oil cylinder (17) are provided with fixing bolts (23) for fixing the partition cylinder and the oil cylinder.

3. The oilless pump convenient for installation and maintenance as claimed in claim 2, wherein a partition plate (26) is arranged at one end of the partition cylinder (18) close to the oil cylinder (17), and the partition plate (26) is fixed above the clamping groove.

4. An oil-free pump convenient for installation and maintenance according to claim 3, characterized in that the partition (26) is provided with a packing box (27), one end of the piston rod (8) close to the partition cylinder (18) passes through the packing box (27) to be connected with the connecting rod (28), and the piston rod (8) is in threaded fit connection with the connecting rod (28).

5. The oilless pump convenient for installation and maintenance as claimed in claim 4, wherein the piston rod (8) and the connecting rod (28) are provided with a hexagonal fixing block (29) at one end near the joint for screwing the piston rod and the connecting rod.

6. The oilless pump convenient for installation and maintenance of claim 4, wherein the packing box (27) is filled with graphite packing.

7. An oil-free pump convenient for installation and maintenance according to any one of claims 1 to 5, wherein the piston (4) is hollow, and the interior of the piston (4) is filled with inert gas.

8. An oil-free pump convenient for installation and maintenance according to claim 7, characterized in that a sealing assembly is fixed on the outer side of the piston (4), and the sealing assembly comprises a piston ring (34), a guide ring (35) and an expansion ring (36) which are arranged on the outer side of the piston in sequence.