CN215256683U

CN215256683U - Environment-friendly oil-free vertical reciprocating vacuum pump with noise reduction structure

Info

Publication number: CN215256683U
Application number: CN202121534843.1U
Authority: CN
Inventors: 窦群康; 卫江艇; 付喻
Original assignee: Hubei Zhongchuan Gas Co ltd
Current assignee: Hubei Zhongchuan Gas Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-12-21
Anticipated expiration: 2031-07-07

Abstract

The utility model discloses an environmental protection does not have oily vertical reciprocating vacuum pump with amortization structure, comprising a base plate, fixed drive arrangement and the casing of being equipped with on the bottom plate, the pivot is installed to casing lower extreme lateral wall, the fixed first belt pulley that is equipped with of pivot one end, the fixed carousel that is equipped with in pivot other end, carousel one side swing joint has the connecting rod, connecting rod upper end swing joint has the piston rod. Has the advantages that: can utilize spacing ring and polytetrafluoroethylene coating to carry on spacingly to the movement track of piston rod to the reduction piston rod that can be great is at the vibration of motion in-process, thereby can the noise reduction, and can utilize the polytetrafluoroethylene coating to reduce the frictional force between piston rod and the spacing ring, and be provided with and inhale the cotton layer of sound and can absorb the inside noise of casing, be provided with first access panel and second access panel moreover and can be convenient for to the maintenance of inside spare part.

Description

Environment-friendly oil-free vertical reciprocating vacuum pump with noise reduction structure

Technical Field

The utility model relates to a vacuum pump technical field particularly, relates to an environmental protection does not have oily vertical reciprocating vacuum pump with amortization structure.

Background

The vacuum pump refers to a device or equipment for obtaining vacuum by pumping a pumped container by using mechanical, physical, chemical and physicochemical methods. In general, a vacuum pump is a device for improving, generating and maintaining a vacuum in a certain closed space by various methods. The vacuum pump is widely used in various industries, has various structures with various types, has respective advantages and disadvantages, and has great difference in the achievable ultimate vacuum value. Some have high frictional resistance and low efficiency, such as reciprocating piston pumps and rotary vane pumps, but are easy and inexpensive to manufacture, and some have high efficiency but are difficult to machine, such as roots pumps and screw pumps. The oil-free vertical vacuum pump is a mechanical vacuum pump which can operate without any oil as lubrication, adopts the filled polytetrafluoroethylene piston ring to ensure that the cylinder can normally operate without lubricating oil, avoids oil pollution, waste and forgets accidents caused by oiling, but the oil-free vertical vacuum pump can generate noise in use, aggravates the abrasion of parts of the machine, reduces the service life of the vacuum pump, and is not convenient for overhauling internal devices.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an environmental protection does not have oily vertical reciprocating vacuum pump with amortization structure to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an environment-friendly oil-free vertical reciprocating vacuum pump with a silencing structure comprises a bottom plate, wherein a driving device and a shell are fixedly arranged on the bottom plate, a rotating shaft is arranged on one side wall of the lower end of the shell, a first belt pulley is fixedly arranged at one end of the rotating shaft, a rotating disc is fixedly arranged at the other end of the rotating shaft, a connecting rod is movably connected to one side of the rotating disc, a piston rod is movably connected to the upper end of the connecting rod, a limiting ring is fixedly arranged on the shell close to the inner wall of the upper end of the shell, a polytetrafluoroethylene coating is arranged on the inner wall of the limiting ring, a box body is fixedly arranged on the shell, an air inlet pipe and an air outlet pipe are respectively arranged on two sides of the box body, the upper end of the piston rod extends into the box body, a piston is fixedly arranged on the upper end and the lower wall of one side of the box body through bolts, first check valves are fixedly embedded in the upper wall and lower wall of one side of the box body, and are connected with the air inlet pipe through first air passages, the upper and lower two walls of box opposite side are all fixed to be inlayed and are equipped with the second check valve, the second check valve all through the second air flue with the outlet duct is connected, the fixed cotton layer of sound of inhaling that is equipped with of shells inner wall, the box one side is equipped with first access panel through the bolt fastening, the casing one side is equipped with the second access panel through the bolt fastening.

Further, drive arrangement includes motor and second belt pulley, the motor is fixed on the bottom plate, the fixed cover of pivot outer wall of motor is equipped with the second belt pulley, first belt pulley with through the V belt transmission between the second belt pulley.

Further, four corners of the bottom plate are provided with mounting holes.

Furthermore, the piston rod is provided with a sealing ring in a sliding sleeve mode and close to the outer wall of the upper end, and the sealing ring is fixedly embedded at the bottom end of the box body.

Furthermore, a flange plate is fixedly sleeved on the outer wall of the upper end of the shell, and the flange plate is fixedly connected with the box body through bolts.

Furthermore, the middle part of the inner wall of the upper end of the box body is provided with a holding tank.

Compared with the prior art, the utility model discloses following beneficial effect has: can utilize spacing ring and polytetrafluoroethylene coating to carry on spacingly to the movement track of piston rod to the reduction piston rod that can be great is at the vibration of motion in-process, thereby can the noise reduction, and can utilize the polytetrafluoroethylene coating to reduce the frictional force between piston rod and the spacing ring, and be provided with and inhale the cotton layer of sound and can absorb the inside noise of casing, be provided with first access panel and second access panel moreover and can be convenient for to the maintenance of inside spare part.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic front structural view of an environment-friendly oil-free vertical reciprocating vacuum pump with a noise reduction structure according to an embodiment of the present invention;

fig. 2 is a schematic back structural view of an environment-friendly oil-free vertical reciprocating vacuum pump with a noise reduction structure according to an embodiment of the present invention;

FIG. 3 is a sectional view of a housing of an environment-friendly oil-free vertical reciprocating vacuum pump with a noise reduction structure according to an embodiment of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 3;

fig. 5 is a sectional view of a box in a downward direction in an environment-friendly oil-free vertical reciprocating vacuum pump with a noise reduction structure according to an embodiment of the present invention.

Reference numerals:

1. a base plate; 2. a housing; 3. a rotating shaft; 4. a first pulley; 5. a turntable; 6. a connecting rod; 7. a piston rod; 8. a limiting ring; 9. a polytetrafluoroethylene coating; 10. a box body; 11. an air inlet pipe; 12. an air outlet pipe; 13. a piston; 14. a first check valve; 15. a second one-way valve; 16. a sound absorbing cotton layer; 17. a first access panel; 18. a second access panel; 19. a second pulley; 20. a motor; 21. a seal ring; 22. a flange plate; 23. and (6) accommodating the tank.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

the first embodiment is as follows:

referring to fig. 1-5, an environment-friendly oil-free vertical type reciprocating vacuum pump with a noise reduction structure according to an embodiment of the present invention includes a bottom plate 1, a driving device and a casing 2 are fixedly disposed on the bottom plate 1, a rotating shaft 3 is mounted on a side wall of a lower end of the casing 2, a first belt pulley 4 is fixedly disposed at one end of the rotating shaft 3, a rotating disc 5 is fixedly disposed at the other end of the rotating shaft 3, a connecting rod 6 is movably connected to one side of the rotating disc 5, a piston rod 7 is movably connected to an upper end of the connecting rod 6, a limiting ring 8 is fixedly disposed on the casing 2 near an inner wall of the upper end, a teflon coating 9 is disposed on an inner wall of the limiting ring 8, a casing 10 is fixedly disposed on the casing 2, an air inlet pipe 11 and an air outlet pipe 12 are respectively disposed on two sides of the casing 10, an upper end of the piston rod 7 extends into the casing 10, and a piston 13 is fixedly disposed on an upper end of the piston rod 7 through a bolt, the upper and lower two walls of box 10 one side are all fixed to be inlayed and are equipped with first check valve 14, first check valve 14 all through first air flue with intake pipe 11 connects, the upper and lower two walls of box 10 opposite side are all fixed to be inlayed and are equipped with second check valve 15, second check valve 15 all through the second air flue with outlet duct 12 is connected, 2 inner walls of casing are fixed and are equipped with inhales the cotton layer of sound 16, box 10 one side is equipped with first access panel 17 through the bolt fastening, 2 one sides of casing are equipped with second access panel 18 through the bolt fastening.

Through the above technical scheme of the utility model, can utilize spacing ring 8 and polytetrafluoroethylene coating 9 to carry on spacingly to the movement track of piston rod 7, thereby the reduction piston rod 7 that can be great is in the vibration of motion in-process, thereby can the noise reduction, and can utilize polytetrafluoroethylene coating 9 to reduce the frictional force between piston rod 7 and the spacing ring 8, and be provided with and inhale the cotton layer 16 of sound and can absorb the inside noise of casing 2, and be provided with first access panel 17 and second access panel 18 and can be convenient for to the maintenance of inside spare part moreover.

Example two:

referring to fig. 1 and 2, for the driving device, the driving device includes a motor 20 and a second pulley 19, the motor 20 is fixed on the bottom plate 1, the second pulley 19 is fixedly sleeved on the outer wall of the rotating shaft 3 of the motor 20, and the first pulley 4 and the second pulley 19 are driven by a triangular belt; for the bottom plate 1, mounting holes are formed in four corners of the bottom plate 1.

Through the above technical scheme of the utility model, motor 20 can drive second belt pulley 19 and rotate, and then can drive first belt pulley 4 through the V-belt and rotate, and the mounting hole can be used for the fixed of bottom plate 1 to can increase the stability in the whole vacuum pump working process.

Example three:

referring to fig. 4, for the piston rod 7, a sealing ring 21 is slidably sleeved on the outer wall of the piston rod 7 near the upper end, and the sealing ring 21 is fixedly embedded at the bottom end of the box body 10; for the shell 2, a flange plate 22 is fixedly sleeved on the outer wall of the upper end of the shell 2, and the flange plate 22 is fixedly connected with the box body 10 through bolts; for the box body 10, a containing groove 23 is formed in the middle of the inner wall of the upper end of the box body 10.

Through the above technical scheme of the utility model, sealing washer 21 can increase the leakproofness between piston rod 7 and the box 10 bottom, can fix box 10 detachable on casing 2 through setting up ring flange 22, and holding tank 23 can be used for holding the bolt on the piston 13.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

In practical application, the motor 20 can drive the second belt pulley 19 to rotate, and further can drive the first belt pulley 4 to rotate through the V-belt, so as to drive the rotating shaft 3 and the rotating disc 5 to rotate, the piston rod 7 and the piston 13 can continuously reciprocate up and down through the connecting rod 6, when the piston 13 moves upwards, external air enters the lower half part of the box body 10 through the air inlet pipe 11, the first air passage at the lower end and the first check valve 14, and simultaneously air at the upper half part of the box body 10 is discharged through the second check valve 15 at the upper end, the second air passage and the air outlet pipe 12, when the piston 13 moves downwards, external air enters the upper half part of the box body 10 through the air inlet pipe 11, the first air passage at the upper end and the first check valve 14, and simultaneously air at the lower half part of the box body 10 is discharged through the second check valve 15 at the lower end, the second air passage and the air outlet pipe 12, so as to realize the function of air extraction from the air inlet pipe 11, and the motion trail of the piston rod 7 can be limited by using the limiting ring 8 and the polytetrafluoroethylene coating 9, thereby greatly reducing the vibration of the piston rod 7 in the moving process, reducing the noise, but also can reduce the friction force between the piston rod 7 and the limit ring 8 by utilizing the polytetrafluoroethylene coating 9, the sound absorption cotton layer 16 can absorb the noise inside the shell 2, the first access panel 17 and the second access panel 18 can facilitate the access to the internal parts, the mounting holes can be used for fixing the bottom plate 1, thereby increasing the stability of the whole vacuum pump in the working process, increasing the sealing performance between the piston rod 7 and the bottom end of the box body 10 by the sealing ring 21, the housing 10 can be detachably fixed to the housing 2 by providing a flange 22, and the receiving grooves 23 can be used to receive bolts on the piston 13.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The environment-friendly oil-free vertical reciprocating vacuum pump with the noise reduction structure is characterized by comprising a bottom plate (1), wherein a driving device and a shell (2) are fixedly arranged on the bottom plate (1), a rotating shaft (3) is installed on one side wall of the lower end of the shell (2), a first belt pulley (4) is fixedly arranged at one end of the rotating shaft (3), a rotating disc (5) is fixedly arranged at the other end of the rotating shaft (3), a connecting rod (6) is movably connected to one side of the rotating disc (5), a piston rod (7) is movably connected to the upper end of the connecting rod (6), a limiting ring (8) is fixedly arranged on the inner wall of the shell (2) close to the upper end, a polytetrafluoroethylene coating (9) is arranged on the inner wall of the limiting ring (8), a box body (10) is fixedly arranged on the shell (2), and an air inlet pipe (11) and an air outlet pipe (12) are respectively arranged on two sides of the box body (10), piston rod (7) upper end extends to in box (10), just piston rod (7) upper end is equipped with piston (13) through the bolt fastening, the upper and lower two walls of box (10) one side are all fixed to be inlayed and are equipped with first check valve (14), first check valve (14) all through first air flue with intake pipe (11) are connected, the upper and lower two walls of box (10) opposite side are all fixed to be inlayed and are equipped with second check valve (15), second check valve (15) all through the second air flue with outlet duct (12) are connected, casing (2) inner wall is fixed and is equipped with sound absorption cotton layer (16), box (10) one side is equipped with first access panel (17) through the bolt fastening, casing (2) one side is equipped with second access panel (18) through the bolt fastening.

2. The environment-friendly oil-free vertical type reciprocating vacuum pump with the noise reduction structure as claimed in claim 1, wherein the driving device comprises a motor (20) and a second belt pulley (19), the motor (20) is fixed on the bottom plate (1), the second belt pulley (19) is fixedly sleeved on the outer wall of the rotating shaft (3) of the motor (20), and the first belt pulley (4) and the second belt pulley (19) are driven by a V-belt.

3. The environment-friendly oil-free vertical reciprocating vacuum pump with the noise reduction structure as claimed in claim 1, wherein the bottom plate (1) is provided with mounting holes at four corners.

4. The environment-friendly oil-free vertical type reciprocating vacuum pump with the noise reduction structure as claimed in claim 1, wherein the piston rod (7) is slidably sleeved with a sealing ring (21) near the outer wall of the upper end, and the sealing ring (21) is fixedly embedded at the bottom end of the box body (10).

5. The environment-friendly oil-free vertical reciprocating vacuum pump with the noise reduction structure as claimed in claim 1, wherein a flange (22) is fixedly sleeved on the outer wall of the upper end of the shell (2), and the flange (22) is fixedly connected with the box body (10) through bolts.

6. The environment-friendly oil-free vertical type reciprocating vacuum pump with the noise reduction structure as claimed in claim 1, wherein a holding groove (23) is formed in the middle of the inner wall of the upper end of the casing (10).