CN213838830U

CN213838830U - Vacuum pump with noise reduction function

Info

Publication number: CN213838830U
Application number: CN202022010385.3U
Authority: CN
Inventors: 胡学刚
Original assignee: Shandong Zhuocheng Chemical Co ltd
Current assignee: Shandong Zhuocheng Chemical Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-07-30
Anticipated expiration: 2030-09-15

Abstract

The utility model discloses a vacuum pump with noise reduction function, including box, the pump body, whistle box, backup pad and piston link mechanism, be equipped with two parallel damper between bottom and the backup pad, two the damper all includes one-level damper and second grade damper, pump body exit is connected with the whistle box, the whistle box center is equipped with the third filling layer, be equipped with the first filling layer along the box in the whistle box, the symmetry is equipped with the second filling layer between first filling layer and the third filling layer, this utility model reduces the noise starting from two sources of noise, and the outlet pipe end is equipped with the whistle box, is equipped with three-layer sound absorption filler in the whistle box; meanwhile, two parallel secondary damping mechanisms are arranged at the bottom of the box body, and a sound absorbing layer is arranged on the inner wall of the box body, so that the effects of buffering and absorbing vibration are achieved by comprehensively utilizing three aspects, noise is reduced well, and the noise problem is improved substantially.

Description

Vacuum pump with noise reduction function

Technical Field

The utility model relates to a vacuum pump technical field specifically is a vacuum pump with function of making an uproar is fallen.

Background

The vacuum pump is extensive in all trades and uses, and the vacuum pump is very big at the during operation noise, has caused very big puzzlement for the user in the short time, then can cause the physical damage in aspects such as user's hearing for a long time, and the noise of vacuum pump mainly derives from following two aspects: firstly, vibration is generated in the rotation process of a rotor in the pump, and simultaneously vibration noise and motor noise generate sound amplification due to a resonance effect, so that the noise is more obvious when the vacuum pump works; second, the resulting aerodynamic noise radiated by the exhaust end ducts.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vacuum pump with function of making an uproar is fallen to the problem of proposing in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a vacuum pump with a noise reduction function comprises a box body, a pump body, a sound attenuation box, a supporting plate and a piston connecting rod mechanism, wherein two parallel damping mechanisms are arranged between the bottom of the box body and the supporting plate, each damping mechanism comprises a primary damping mechanism and a secondary mechanism, the primary damping mechanism comprises a cylinder, a piston connecting rod mechanism and an elastic bead, the secondary damping mechanism comprises an accommodating box and a rubber ring, a piston of the piston connecting rod mechanism is arranged in the cylinder, a roller on the inner side wall of the cylinder is in rolling fit with a connecting rod of the piston connecting rod mechanism, the bottom of the cylinder is provided with the elastic bead, the elastic bead is positioned at the stroke position of the piston connecting rod mechanism, the bottom of the cylinder is connected with the accommodating box through the rubber ring, sliding grooves in two sides of the cylinder are in sliding fit with sliding blocks on two sides of the accommodating box, and the bottom of the accommodating box is fixedly connected with the supporting plate, the utility model discloses a silencer, including box, intake pipe, silencer body, filter screen, first filling layer, second filling layer, first trachea, two gas distribution pipes, the pump body is installed on the bottom plate in the box, be equipped with intake pipe and outlet duct on the pump body, the intake pipe mid-mounting has the filter screen, pump body exit is connected with the whistle box, the whistle box center is equipped with the third filling layer, be equipped with first filling layer along the box in the whistle box, the symmetry is equipped with the second filling layer between first filling layer and the third filling layer, outlet duct one divide into two gas distribution pipes in the third filling layer, two the gas distribution pipe unites two into one the outlet duct and extends to the box outside.

As a further aspect of the present invention: the cooling box is characterized in that a cooling box is arranged at the top of the box body, cooling liquid and a cavity are arranged in the cooling box, the cooling liquid and the cavity in the cooling box are respectively communicated with the interior of the box body through an air suction pipe and an air delivery pipe, and fans are respectively arranged at the bottom ends of the cooling box and the air suction pipe.

As a further aspect of the present invention: and a connector is arranged on an air outlet pipe between the outlet of the pump body and the silencing box, and the joint of the connector is sealed by a rubber sleeve.

As a further aspect of the present invention: and a sound absorption layer is arranged inside the box body along the box body.

As a further aspect of the present invention: the surface of the air outlet pipe outside the box body is corrugated.

As a further proposal of the utility model; the cylinder side wall is provided with a pressure relief hole, the elastic bead comprises a marble, a column casing and a spring, the spring is arranged in the column casing, the top end of the spring is connected with the bottom of the marble, the bottom of the spring is fixed at the bottom of the column casing, and the marble is semi-exposed in the column casing.

As a further proposal of the utility model; mounting holes are arranged on two sides of the supporting plate.

Compared with the prior art, the beneficial effects of the utility model are that: the noise is reduced from two main sources generated by the noise of the vacuum pump, the sound-absorbing box is arranged at the end of the air outlet pipe, three layers of sound-absorbing fillers are arranged in the sound-absorbing box, the sound-absorbing guide pipe in the sound-absorbing box is divided into two parts, the energy in the sound is effectively absorbed, and the vibration caused by the noise is greatly reduced; meanwhile, two parallel secondary damping mechanisms are arranged at the bottom of the box body, so that the damping is buffered layer by layer, and the vibration is greatly weakened; and the inner wall of the box body is provided with the sound absorption layer, so that the noise generated by the vibration of the pump body is absorbed, the three aspects are comprehensively utilized to play the effects of buffering and absorbing the vibration, the noise is reduced well, and the noise problem of the vacuum pump is essentially improved.

Drawings

Fig. 1 is a schematic structural view of a vacuum pump having a noise reduction function.

Fig. 2 is a partially enlarged schematic view of a in fig. 1 in a vacuum pump having a noise reduction function.

Fig. 3 is a partially enlarged schematic view of B in fig. 1 in a vacuum pump having a noise reduction function.

Fig. 4 is a partially enlarged schematic view of C in fig. 1 in a vacuum pump having a noise reduction function.

Fig. 5 is an isometric view of a rubber ring in a vacuum pump with noise reduction.

In the figure: 1. a box body; 2. a pump body; 3. an air inlet pipe; 4. a filter screen; 5. an air outlet pipe; 6. a connector; 7. a sound silencing box; 8. a first filling layer; 9. a second filling layer; 10. a third filling layer; 11. a gas distributing pipe; 12. a cylinder; 13. a roller; 14. a piston rod mechanism; 15. an elastic bead; 16. a pressure relief vent; 17. accommodating the box; 18. a slider; 19. a chute; 20. a cooling tank; 21. an air intake duct; 22. a gas delivery pipe; 23. a support plate; 24. a rubber ring; 25. a sound absorbing layer; 26. a fan.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Referring to fig. 1 to 5, in an embodiment of the present invention, a vacuum pump with a noise reduction function includes a box 1, a pump body 2, a sound muffling box 7, a supporting plate 23 and a piston link mechanism 14, two parallel damping mechanisms are disposed between the bottom of the box 1 and the supporting plate 23, each of the two damping mechanisms includes a first-stage damping mechanism and a second-stage damping mechanism, the first-stage damping mechanism includes a cylinder 12, a piston link mechanism 14 and an elastic bead 15, the second-stage damping mechanism includes an accommodating box 17 and a rubber ring 24, a piston of the piston link mechanism 14 is disposed in the cylinder 12, a roller 13 on an inner side wall of the cylinder 12 is in rolling fit with a link rod of the piston link mechanism 14, the elastic bead 15 is disposed at a bottom of the cylinder 12, the elastic bead of the elastic bead 15 is located at a stroke position of the piston link mechanism 14, the bottom of the cylinder 12 is connected to the accommodating box 17 through the rubber ring 24, the improved silencer is characterized in that sliding grooves 19 in two sides of the cylinder 12 are in sliding fit with sliding blocks 18 on two sides of the containing box 17, the bottom of the containing box 17 is fixedly connected with a supporting plate 23, the pump body 2 is installed on a bottom plate in the box body 1, an air inlet pipe 3 and an air outlet pipe 5 are arranged on the pump body 2, a filter screen 4 is arranged in the middle of the air inlet pipe 3, a silencing box 7 is connected to the position of an outlet of the pump body 2, a third filling layer 10 is arranged at the center of the silencing box 7, a first filling layer 8 is arranged in the silencing box 7 along the box body, second filling layers 9 are symmetrically arranged between the first filling layer 8 and the third filling layer 10, the air outlet pipe 5 in the third filling layer 10 is divided into two air distributing pipes 11, and the air distributing pipes 11 are combined into one, and the air outlet pipe 5 extends to the outside of the box body 1.

Preferably, the side wall of the cylinder 12 is provided with a pressure relief hole 16, the elastic bead 15 comprises a marble, a column casing and a spring, the spring is arranged in the column casing, the top end of the spring is connected with the bottom of the marble, the bottom of the spring is fixed at the bottom of the column casing, and the marble is semi-exposed in the column casing.

In the embodiment, after the box body 1 works, air is sucked from the filter screen 4, the filter screen 4 has the function of filtering dust and other particles on the sucked air, abnormal vibration caused by the fact that the particles enter a pump body to block a filter element is avoided, the air pumped out of the air outlet pipe 5 passes through the air distribution of the two air distribution pipes 11 and enters the sound eliminating box 7, the first filling layer 8, the second filling layer 9 and the third filling layer 10 can be sequentially filled with liquid, porous foam and concrete, the filler is not limited to the above, the sound absorbing materials of the first filling layer 8, the second filling layer 9 and the third filling layer 10 are sequentially compact, the sound absorbing effect is sequentially enhanced from inside to outside, the energy in sound is absorbed layer by layer along with the air and is conveyed to a machine externally connected with the air outlet pipe 5 through the air outlet pipe 5, and the noise reduction is obvious; when the pump body 2 works to cause the vibration of the pump body, firstly, the vibration is transmitted to the primary damping mechanism, the piston at the bottom of the piston connecting rod mechanism 14 is utilized to compress the gas in the cylinder 12, the gas is discharged from the pressure relief hole 16, the pressure relief hole 16 plays a role of pressure relief, when the piston of the piston connecting rod mechanism 14 touches the marble of the elastic bead 15, the compression of the spring is caused, the marble is compressed to the bottom of the cylinder, the energy is converted into the elastic potential energy of the spring of the elastic bead 15, the primary damping mechanism starts working at the moment, the cylinder 12 integrally compresses the rubber ring 24, the sliding block 18 is in sliding fit with the containing box 17, the containing box 17 slides upwards, meanwhile, the two sides of the rubber ring 24 are compressed to be close to the inner wall of the containing box 17, when the two sides of the rubber ring 24 are opened to contact with the containing box 17, the secondary damping is stopped, the vibration of the pump body is effectively absorbed through the secondary damping, and the noise is greatly reduced.

Referring to fig. 1-2, as another preferred embodiment of the present invention, a cooling box 20 is disposed on the top of the box body 1, a cooling liquid and a cavity are disposed in the cooling box 20, the cooling liquid and the cavity in the cooling box 20 are respectively communicated with the inside of the box body 1 through an air suction pipe 21 and an air delivery pipe 22, and fans 26 are respectively mounted at the bottom ends of the cooling box 20 and the air suction pipe 21.

In this embodiment, heat generated by the pump body is absorbed into the cooling liquid in the cooling box 20 from the fan of the air suction pipe 21 for cooling, and cool air is sucked into the box body 1 from the cavity of the cooling box 20 through the effect of the fan 26 in the air delivery pipe 22, so that the circulation is realized, the heat dissipation of the pump body 2 in the box body 1 is good, the normal operation of the pump body is ensured, and abnormal sound caused by the damage of the pump body is also avoided.

Referring to fig. 1, as another preferred embodiment of the present invention, a connector 6 is disposed on the air outlet pipe 5 between the outlet of the pump body 2 and the sound muffling box 7, and the joint of the connector 6 is sealed by a rubber sleeve.

In this embodiment, the connector 6 facilitates replacement of the sound muffling box 7 and replacement of a filling material in the sound muffling box 7, and the rubber sleeve is sealed to ensure good airtightness.

Referring to fig. 1, as another preferred embodiment of the present invention, a sound absorption layer 25 is disposed inside the box body 1 along the box body.

In this embodiment, the sound absorbing layer 25 may be made of sound absorbing cotton to further absorb the vibration noise generated by the body.

Referring to fig. 1 and 4, as another preferred embodiment of the present invention, the surface of the outlet pipe 5 outside the box body 1 is corrugated.

In this embodiment, the surface of the air outlet pipe 5 is corrugated so as to be externally connected with a hose.

Referring to fig. 1, as another preferred embodiment of the present invention, mounting holes are formed at both sides of the supporting plate 23.

In this embodiment, the mounting holes facilitate the mounting and fixing of the box body 1 by bolts, and the mounting holes are convenient to detach, and the support plate 23 may be directly embedded in the ground of the fixed working machine room and fixed by cement or the like.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A vacuum pump with a noise reduction function comprises a box body (1), a pump body (2), a sound attenuation box (7), a supporting plate (23) and a piston connecting rod mechanism (14), and is characterized in that two parallel damping mechanisms are arranged between the bottom of the box body (1) and the supporting plate (23), each damping mechanism comprises a first-stage damping mechanism and a second-stage damping mechanism, each first-stage damping mechanism comprises a cylinder (12), a piston connecting rod mechanism (14) and an elastic bead (15), each second-stage damping mechanism comprises an accommodating box (17) and a rubber ring (24), a piston of each piston connecting rod mechanism (14) is arranged in the cylinder (12), a roller (13) on the inner side wall of the cylinder (12) is in rolling fit with a connecting rod of the piston connecting rod mechanism (14), the inner bottom of the cylinder (12) is provided with the elastic beads (15), and the elastic beads of the elastic beads (15) are located at the stroke positions of the piston connecting rod mechanisms (14), the bottom of the cylinder (12) is connected with the accommodating box (17) through a rubber ring (24), sliding grooves (19) in two sides of the cylinder (12) are in sliding fit with sliding blocks (18) in two sides of the accommodating box (17), the bottom of the accommodating box (17) is fixedly connected with a supporting plate (23), the pump body (2) is installed on a bottom plate in the box body (1), an air inlet pipe (3) and an air outlet pipe (5) are arranged on the pump body (2), a filter screen (4) is installed in the middle of the air inlet pipe (3), a silencing box (7) is connected to an outlet of the pump body (2), a third filling layer (10) is arranged in the middle of the silencing box (7), a first filling layer (8) is arranged in the silencing box body (7) along the box body, a second filling layer (9) is symmetrically arranged between the first filling layer (8) and the third filling layer (10), and the air outlet pipe (5) in the third filling layer (10) is split into, the two gas distribution pipes (11) are combined into one gas outlet pipe (5) and extend to the outside of the box body (1).

2. The vacuum pump with the noise reduction function as claimed in claim 1, wherein a cooling box (20) is arranged at the top of the box body (1), a cooling liquid and a cavity are arranged in the cooling box (20), the cooling liquid and the cavity in the cooling box (20) are respectively communicated with the inside of the box body (1) through an air suction pipe (21) and an air delivery pipe (22), and fans (26) are respectively arranged at the bottom ends of the cooling box (20) and the air suction pipe (21).

3. A vacuum pump with noise reduction function according to claim 1, characterized in that a connector (6) is arranged on the air outlet pipe (5) between the outlet of the pump body (2) and the sound deadening box (7), and the joint of the connector (6) is sealed by a rubber sleeve.

4. A vacuum pump with noise reduction function according to claim 1 or 2, characterized in that the inside of the casing (1) is provided with a sound absorbing layer (25) along the casing.

5. A vacuum pump with noise reduction function according to claim 1, characterized in that the surface of the outlet pipe (5) outside the casing (1) is corrugated.

6. The vacuum pump with the noise reduction function according to claim 1, wherein the side wall of the cylinder (12) is provided with a pressure relief hole (16), the elastic bead (15) comprises a marble, a column casing and a spring, the spring is arranged in the column casing, the top end of the spring is connected with the bottom of the marble, the bottom of the spring is fixed at the bottom of the column casing, and the marble is half exposed out of the column casing.

7. A vacuum pump with noise reduction function according to claim 1, characterized in that the supporting plate (23) is provided with mounting holes at both sides.