A vacuum pump set

Abstract

This utility model relates to the field of vacuum pump technology and discloses a vacuum pump assembly, including a housing, a first vacuum pump and a second vacuum pump arranged inside the housing, the second vacuum pump being located directly below the first vacuum pump, the inlet end of the first vacuum pump passing through the housing and communicating with the outside, the outlet end of the first vacuum pump being connected to the inlet end of the second vacuum pump, and also including a silencing unit, the silencing unit being attached inside the housing and located directly below the second vacuum pump, one end of the silencing unit being connected to the outlet end of the second vacuum pump, and the other end communicating with the outside. This utility model, with the first vacuum pump, the second vacuum pump, and the silencing unit sequentially located directly above their respective units, has a compact structure and improves space utilization.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump technology, specifically a vacuum pump assembly. Background Technology

[0002] A vacuum pump group is formed by connecting multiple vacuum pumps together. Vacuum pump groups can be used in many fields and occasions. Vacuum pump groups can improve gas output efficiency and increase vacuum level. However, since vacuum pump groups require connecting at least two vacuum pumps together, they often require a large space.

[0003] In the prior art, Chinese patent document CN220622173U discloses a Roots screw vacuum pump set, including: a Roots pump, a frame, a silencing system, a power distribution cabinet, and a screw pump; the screw is connected in series at the front end of the Roots pump as a backing pump, and the Roots pump is used as the main pump. The silencing system of this vacuum pump set is located outside the frame, thus occupying more space.

[0004] Therefore, the technical problem to be solved in this case is: how to reduce the space occupied by the vacuum pump unit. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a vacuum pump set. This vacuum pump set improves the vacuum level and pumping efficiency by placing a second vacuum pump directly below the first vacuum pump and connecting the two. Furthermore, by placing a silencing unit directly below the second vacuum pump, the structure is compact, thereby further reducing space and improving space utilization.

[0006] The technical solution of this utility model is:

[0007] A vacuum pump assembly includes a housing, a first vacuum pump and a second vacuum pump disposed within the housing, the second vacuum pump being located directly below the first vacuum pump, the inlet end of the first vacuum pump passing through the housing and communicating with the outside, the outlet end of the first vacuum pump being connected to the inlet end of the second vacuum pump, and also includes a silencing unit, the silencing unit being attached to the housing and located directly below the second vacuum pump, one end of the silencing unit being connected to the outlet end of the second vacuum pump, and the other end communicating with the outside.

[0008] Preferably, the housing has a placement groove located at the bottom of the housing, and the housing has an arc-shaped bracket located in the placement groove, with the silencing unit attached to the bracket.

[0009] Preferably, the silencing unit includes an exhaust pipe and a silencing component. The input end of the exhaust pipe is connected to the outlet end of the second vacuum pump, and the output end of the exhaust pipe passes through the housing and communicates with the outside. The exhaust pipe is attached inside the housing, and the silencing component is sleeved inside the exhaust pipe.

[0010] Preferably, the housing has a horizontally arranged first partition, the first vacuum pump is connected to the first partition, the first partition has a through hole, and the outlet of the first vacuum pump is connected to the inlet of the second vacuum pump through a pipe passing through the through hole.

[0011] Preferably, the first partition plate is provided with heat dissipation holes, and a grille is provided on one side of the housing.

[0012] Preferably, the first partition is provided with a first support block, which abuts against the first vacuum pump, and the bottom of the housing is provided with a second support block, which abuts against the second vacuum pump.

[0013] Preferably, the housing also includes a control unit. The housing is provided with a vertically arranged second partition. One end of the first partition is connected to the housing, and the other end is connected to the second partition. The first partition and the second partition divide the housing into three chambers for placing the first vacuum pump, the second vacuum pump, and the control unit, respectively.

[0014] Preferably, the bottom of the housing is provided with a roller and a locking rod, the locking rod being screwed onto the bottom of the housing, and the locking rod can be rotated to abut against the ground.

[0015] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:

[0016] This invention improves the vacuum level and pumping efficiency by placing the second vacuum pump directly below the first vacuum pump and connecting the two. Furthermore, by placing the silencing unit directly below the second vacuum pump, the structure is compact, further reducing space and improving space utilization. Attached Figure Description

[0017] Figure 1 This is a perspective view of Embodiment 1 of the present utility model;

[0018] Figure 2 This is a side view of Embodiment 1 of the present utility model;

[0019] Figure 3 This is a cross-sectional view A of Embodiment 1 of the present invention;

[0020] Figure 4 This is a cross-sectional view B of Embodiment 1 of the present invention;

[0021] Figure 5 This is a cross-sectional view C of Embodiment 1 of the present invention;

[0022] Figure 6 This is a schematic diagram of the silencing unit.

[0023] Figure 7 This is a schematic diagram of the silencer component.

[0024] The reference numerals in the accompanying drawings are as follows: 1. Housing; 2. First vacuum pump; 3. Second vacuum pump; 4. Silencing unit; 5. Control unit; 11. Placement slot; 12. Bracket; 13. First partition; 14. Second support block; 15. Roller; 16. Locking rod; 17. Grille section; 21. Inlet end of the first vacuum pump; 22. Outlet end of the first vacuum pump; 31. Inlet end of the second vacuum pump; 32. Outlet end of the second vacuum pump; 41. Exhaust pipe; 42. Silencing component; 131. First support block; 132. Heat dissipation hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] Please see Figure 1-7 A vacuum pump assembly includes a housing 1, a first vacuum pump 2 and a second vacuum pump 3 arranged inside the housing 1, the second vacuum pump 3 being located directly below the first vacuum pump 2, the inlet end 21 of the first vacuum pump passing through the housing 1 and communicating with the outside, the outlet end 22 of the first vacuum pump being connected to the inlet end 31 of the second vacuum pump, and also includes a silencing unit 4, the silencing unit 4 being attached inside the housing 1 and located directly below the second vacuum pump 3, one end of the silencing unit 4 being connected to the outlet end 32 of the second vacuum pump, and the other end communicating with the outside.

[0028] In practical applications, the inlet 21 of the first vacuum pump is connected to the working equipment or pipeline that needs to be evacuated. When the second vacuum pump 3 is started, the second vacuum pump 3 will draw the air from the inlet 31 of the second vacuum pump into the pump body of the second vacuum pump 3. Since the inlet 31 of the second vacuum pump is connected to the outlet 22 of the first vacuum pump, the air drawn into the body of the first vacuum pump 2 through the inlet 21 of the first vacuum pump will enter the inlet 31 of the second vacuum pump from the outlet 22 of the first vacuum pump. The evacuation efficiency and vacuum level are improved by the action of the first vacuum pump 2 and the second vacuum pump 3. The air at the outlet 32 ​​of the second vacuum pump will be silenced by the silencing unit 4 to reduce the noise of the equipment operation and will be discharged from the silencing unit 4. On the other hand, by placing the second vacuum pump 3 directly below the first vacuum pump 2 and the silencing unit 4 directly below the second vacuum pump 3, the overall structure is compact, thereby reducing the space occupied by the equipment and improving the space utilization rate.

[0029] Preferably, the housing 1 is provided with a placement groove 11, the placement groove 11 is located at the bottom of the housing 1, the housing 1 is provided with an arc-shaped bracket 12, the bracket 12 is located in the placement groove 11, and the noise reduction unit 4 is attached to the bracket 12.

[0030] By placing the silencing unit 4 on the bracket 12 through the above design, the stability of the silencing unit 4 inside the housing 1 can be improved, and the silencing unit 4 can also be easily replaced by attaching it to the bracket 12.

[0031] Preferably, the silencing unit 4 includes an exhaust pipe 41 and a silencing component 42. The input end of the exhaust pipe 41 is connected to the outlet end 32 of the second vacuum pump, and the output end of the exhaust pipe 41 passes through the housing 1 and communicates with the outside. The exhaust pipe 41 is attached inside the housing 1, and the silencing component 42 is sleeved inside the exhaust pipe 41.

[0032] Please see Figure 6 In this embodiment, the exhaust pipe 41 can discharge the air from the outlet end 32 of the second vacuum pump to the outside. During the discharge process, the air will pass through the silencer 42 for noise reduction, thereby reducing the noise of the equipment operation. The silencer 42 is specifically a small hole silencer, which is arranged horizontally inside the exhaust pipe 41.

[0033] Preferably, the housing 1 is provided with a horizontally arranged first partition 13, the first vacuum pump 2 is connected to the first partition 13, the first partition 13 is provided with a through hole, and the air outlet 22 of the first vacuum pump is connected to the air inlet 31 of the second vacuum pump through a pipe passing through the through hole.

[0034] In the above design, the first vacuum pump 2 can be better fixed by the first partition 13, and the vibration generated by the first vacuum pump 2 can be transmitted to the housing 1 through the first partition 13, thereby reducing the vibration of the first vacuum pump 2 during operation and improving the stability of the first vacuum pump 2. The second vacuum pump 3 is directly connected to the bottom of the housing 1.

[0035] Preferably, the first partition 13 is provided with heat dissipation holes 132, and the shell 1 is provided with a grille 17 on one side.

[0036] In this embodiment, there are two heat dissipation holes 132. The heat generated by the second vacuum pump 3 can be transferred through the heat dissipation holes 132, and the hot air can be discharged from the grille section 17 to the outside of the housing 1, thereby improving the heat dissipation performance.

[0037] Preferably, the first partition 13 is provided with a first support block 131, which abuts against the first vacuum pump 2, and the bottom of the housing 1 is provided with a second support block 14, which abuts against the second vacuum pump 3.

[0038] Through the above design, the first support block 131 and the second support block 14 can support the first vacuum pump 2 and the second vacuum pump 3 respectively, thereby enabling the first vacuum pump 2 and the second vacuum pump 3 to operate more stably.

[0039] Preferably, it also includes a control unit 5. The housing 1 is provided with a vertically arranged second partition. One end of the first partition 13 is connected to the housing 1, and the other end is connected to the second partition. The first partition 13 and the second partition divide the housing 1 into three chambers for placing the first vacuum pump 2, the second vacuum pump 3, and the control unit 5, respectively.

[0040] In this embodiment, the control unit 5 is a frequency converter, and there are two frequency converters. The two frequency converters correspond one-to-one with the first vacuum pump 2 and the second vacuum pump 3 and are electrically connected. In this way, the pumping speed of the first vacuum pump 2 or the second vacuum pump 3 can be controlled by a single frequency converter, so that the operator can make more flexible adjustments.

[0041] Preferably, the bottom of the housing 1 is provided with a roller 15 and a locking rod 16. The locking rod 16 is screwed onto the bottom of the housing 1 and can be rotated to abut against the ground.

[0042] Through the above design, the roller 15 can facilitate the movement of the entire vacuum pump unit by the staff. When the staff moves to the required work site, the housing 1 can be fixed by rotating the locking rod 16, thereby improving the stability of the vacuum pump unit during operation. In this embodiment, the locking rod 16 is a screw, which is screwed to the bottom of the housing 1 to raise and lower. The bottom of the screw has a suction cup structure, which further fixes the housing 1.

[0043] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vacuum pump set comprising a housing, a first vacuum pump and a second vacuum pump arranged in the housing, the second vacuum pump being located directly below the first vacuum pump, a gas inlet end of the first vacuum pump communicating with the outside through the housing, a gas outlet end of the first vacuum pump being connected to a gas inlet end of the second vacuum pump, characterized in that, It also includes a silencing unit, which is attached inside the housing and located directly below the second vacuum pump. One end of the silencing unit is connected to the outlet of the second vacuum pump, and the other end is connected to the outside.

2. Vacuum pump set according to claim 1, characterized in that The housing has a placement slot located at the bottom of the housing. The housing has an arc-shaped bracket located in the placement slot. The noise reduction unit is attached to the bracket.

3. The vacuum pump assembly according to claim 1, characterized in that, The silencing unit includes an exhaust pipe and a silencing component. The input end of the exhaust pipe is connected to the outlet end of the second vacuum pump, and the output end of the exhaust pipe passes through the housing and communicates with the outside. The exhaust pipe is connected inside the housing, and the silencing component is installed inside the exhaust pipe.

4. The vacuum pump assembly according to claim 1, characterized in that, The housing is provided with a horizontally arranged first partition, the first vacuum pump is connected to the first partition, the first partition is provided with a through hole, and the outlet end of the first vacuum pump is connected to the inlet end of the second vacuum pump through a pipe passing through the through hole.

5. The vacuum pump assembly according to claim 4, characterized in that, The first partition is provided with heat dissipation holes, and a grid section is provided on one side of the housing.

6. The vacuum pump assembly according to claim 4, characterized in that, The first partition is provided with a first support block, which abuts against the first vacuum pump. The bottom of the housing is provided with a second support block, which abuts against the second vacuum pump.

7. The vacuum pump assembly according to claim 4, characterized in that, It also includes a control unit. The housing is provided with a vertically arranged second partition. One end of the first partition is connected to the housing, and the other end is connected to the second partition. The first partition and the second partition divide the housing into three chambers for placing the first vacuum pump, the second vacuum pump, and the control unit, respectively.

8. The vacuum pump assembly according to claim 1, characterized in that, The bottom of the housing is provided with a roller and a locking rod. The locking rod is screwed to the bottom of the housing and can be rotated to abut against the ground.

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