Silencing device for vacuum pump

Abstract

The utility model discloses a silencing device for a vacuum pump, which relates to the technical field of vacuum pump silencing, and comprises a fixing part, a silencing part and a connecting piece, through the arrangement of the fixing part, the silencing device can be quickly mounted and dismounted in a narrow environment, the maintenance is convenient, the working efficiency is improved, and through the arrangement of the connecting piece, a plurality of silencing parts are connected to achieve the optimal silencing and noise reduction effect. The silencing parts are increased or decreased according to actual silencing requirements, the use mode is more flexible, and the application range is wider; and by arranging various silencing components, sound waves can be absorbed and diffused, and the noise reduction effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pump noise elimination, and particularly relates to a noise elimination device for a vacuum pump. Background Art

[0002] The main reason for the vacuum pump to require a noise elimination device is to reduce the noise generated during operation; when the vacuum pump is running, it will generate a relatively high noise level, and these noises may interfere with or affect the surrounding environment and operators.

[0003] The utility model patent with the publication number of CN204663800U discloses a noise elimination device for a vacuum pump, which includes an exhaust port joint, a noise elimination pipe sleeve and a noise elimination inner pipe; the top of the exhaust port joint is blocked at the lower port of the noise elimination pipe sleeve, and the noise elimination inner pipe is sleeved in the noise elimination pipe sleeve and sealed at the top; an air inlet hole for the noise elimination inner pipe to pass through is provided at the top of the exhaust port joint, and the noise elimination inner pipe is tightly sealed with the edge of the air inlet hole; a plurality of hollow spherical bulges are provided on the pipe wall of the noise elimination inner pipe, and noise elimination holes communicating the pipe cavity of the noise elimination inner pipe and the pipe cavity of the noise elimination pipe sleeve are provided on these bulges. In addition, an arc-shaped partition is provided in the pipe cavity of the noise elimination inner pipe, and an air outlet hole is provided at the top of the partition.

[0004] However, this prior art is not convenient for quick installation in a narrow space, the installation process is cumbersome, the noise elimination part cannot be increased or decreased according to actual noise elimination requirements, its applicability is weak, it is not convenient for maintenance, and this prior art only relies on reducing the gas flow velocity to achieve noise reduction, and its effect is limited. Summary of the Utility Model

[0005] In view of the above technical problems, the utility model provides the following technical solutions: a noise elimination device for a vacuum pump, including a fixed disk, including a noise elimination part connected by a connecting member, the noise elimination part includes a noise elimination cylinder, a channel communicating the noise elimination bottom interface and the noise elimination top interface is arranged in the noise elimination cylinder, and a noise elimination dispersion block is arranged in the channel; a groove for reflecting sound waves is arranged on the noise elimination dispersion block; the noise elimination bottom interface is connected to the fixed disk by a thread, and the fixed disk is fixed by a fixing part.

[0006] Further, the fixing part includes a fixed outer shell slidably arranged on the fixed disk, a fixed sliding rod is slidably arranged in the fixed outer shell, a fixed sliding block is fixedly arranged on the fixed sliding rod, and a first fixed locking piece and a second fixed locking piece are rotatably arranged on the fixed sliding block; the fixed sliding block is connected to the fixed outer shell by a fixed return spring.

[0007] Further, a fixed handle is fixedly arranged at one end of the fixed outer shell, and a fixed locking nut is connected to the outside of the fixed outer shell by a thread.

[0008] Further, a plurality of noise elimination rings are connected to the outside of the noise elimination cylinder by a thread.

[0009] Furthermore, a thread for cooperating with a connecting member is provided on the outer side of the sound - proof top interface, and an internal thread for cooperating with the sound - proof top interface is provided inside the sound - proof bottom interface.

[0010] Furthermore, the sound - proof dispersion block is made of sound - proof material.

[0011] Furthermore, the sound - proof cylinder is filled with sound - proof material.

[0012] Furthermore, the sound - proof ring is filled with sound - proof material.

[0013] The beneficial effects of the present utility model compared with the prior art are as follows: 1. By providing a fixing part, the present utility model can be quickly installed and removed in a narrow environment, which is convenient for maintenance and improves work efficiency; 2. By providing a connecting member to connect multiple sound - proof parts, the optimal sound - proof and noise - reduction effect can be achieved, and the number of sound - proof parts can be increased or decreased according to actual sound - proof requirements, so the usage method is more flexible and the applicable range is wider; 3. By providing a variety of sound - proof components, the sound wave can be absorbed and dispersed, increasing the noise - reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front - view schematic diagram of the overall structure of the present utility model.

[0015] Figure 2 It is a side - view schematic diagram of the overall structure of the present utility model.

[0016] Figure 3 It is a sectional view of the partial structure of the sound - proof part of the present utility model Figure 1 。

[0017] Figure 4 It is a sectional view of the partial structure of the sound - proof part of the present utility model Figure 2 。

[0018] Figure 5 It is a schematic diagram of the partial structure of the fixing part of the present utility model Figure 1 。

[0019] Figure 6 It is a schematic diagram of the partial structure of the fixing part of the present utility model Figure 2 。

[0020] Figure 7 It is a sectional view of the partial structure of the fixing part of the present utility model Figure 1 。

[0021] Figure 8 It is a sectional view of the partial structure of the fixing part of the present utility model Figure 2 。

[0022] Reference numerals: 1 - fixing part; 2 - sound - damping part; 3 - connecting piece; 4 - fixing disc; 101 - fixing slide bar; 102 - fixing sliding block; 103 - first fixing locking piece; 104 - second fixing locking piece; 105 - fixing return spring; 106 - fixing outer shell; 107 - fixing locking nut; 108 - fixing handle; 201 - sound - damping dispersion block; 202 - sound - damping cylinder; 203 - sound - damping ring; 204 - sound - damping bottom interface; 205 - sound - damping top interface. Detailed implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] As Figures 1 to 8 shown, a sound - damping device for a vacuum pump includes a fixing disc 4, a sound - damping part 2 connected by a connecting piece 3. The sound - damping part 2 includes a sound - damping cylinder 202. A channel communicating the sound - damping bottom interface 204 and the sound - damping top interface 205 is provided in the sound - damping cylinder 202, and a sound - damping dispersion block 201 is provided in the channel; grooves for reflecting sound waves are provided on the sound - damping dispersion block 201; the sound - damping bottom interface 204 is connected to the fixing disc 4 by a thread, and the fixing disc 4 is fixed by the fixing part 1.

[0025] As Figures 1 to 8 shown, the fixing part 1 includes a fixing outer shell 106 slidably arranged on the fixing disc 4. A fixing slide bar 101 is slidably arranged in the fixing outer shell 106. A fixing sliding block 102 is fixedly arranged on the fixing slide bar 101. A first fixing locking piece 103 and a second fixing locking piece 104 are rotatably arranged on the fixing sliding block 102; the fixing sliding block 102 is connected to the fixing outer shell 106 by a fixing return spring 105; a fixing handle 108 is fixedly arranged at one end of the fixing outer shell 106, and a fixing locking nut 107 is connected to the outside of the fixing outer shell 106 by a thread; a plurality of sound - damping rings 203 are connected to the outside of the sound - damping cylinder 202 by a thread.

[0026] As Figures 1 to 8 shown, a thread matching the connecting piece 3 is provided on the outside of the sound - damping top interface 205, and an internal thread matching the sound - damping top interface 205 is provided in the sound - damping bottom interface 204; the sound - damping dispersion block 201 is made of a sound - damping material; the sound - damping cylinder 202 is filled with a sound - damping material; the sound - damping ring 203 is filled with a sound - damping material, and the connecting piece 3 is made of a sound - insulating flexible material.

[0027] As Figures 1 to 8As shown in the figure, a noise elimination device for a vacuum pump disclosed by the present utility model has the following working principle: One end of the fixing disc 4 of the device is installed at the air inlet or the air outlet of the vacuum pump. The operator holds the fixing handle 108 and manually pulls out the fixing outer shell 106 from the fixing disc 4. Align the mounting holes on the fixing disc 4 with the mounting holes on the air inlet or the air outlet of the vacuum pump. Pass the fixing outer shell 106 through the mounting holes, and manually push the fixing slide bar 101. The fixing slide bar 101 drives the fixing slider 102 to compress the fixing return spring 105. At this time, the fixing locking piece one 103 and the fixing locking piece two 104 retract into the fixing outer shell 106, facilitating the fixing outer shell 106 to pass through the mounting holes. When the fixing locking piece two 104 and the fixing locking piece one 103 pass through the mounting holes, under the action of the fixing return spring 105, the fixing slider 102 is pushed, so that the fixing locking piece two 104 and the fixing locking piece one 103 extend out of the fixing outer shell 106. At this time, the fixing locking piece two 104 and the fixing locking piece one 103 clamp one side of the connection, and then the operator manually screws the fixing locking nut 107 to make the fixing locking nut 107 fit with the other side of the connection, so that the device is tightly connected to the vacuum pump.

[0028] The gas pumped out by the vacuum pump enters the channel in the silencing cylinder 202 through the silencing bottom interface 204. The grooves on the silencing dispersion block 201 reflect and disperse the generated sound waves, and reflect and disperse the sound waves to the sound-absorbing material filled in the silencing cylinder 202. The sound-absorbing material and the silencing ring 203 filled in the silencing cylinder 202 absorb the sound waves to reduce noise; The gas after multiple sound-absorbing reflections is discharged from the silencing top interface 205 end.

[0029] In actual use, multiple silencing parts 2 can be connected through the connector 3 according to actual silencing requirements to eliminate noise and ensure the silencing effect; When installed in a position with a narrow space, the installation direction of the silencing part 2 can be changed through the connector 3 to enhance its applicability.

Claims

1. A silencing device for a vacuum pump, comprising a fixed disk (4), characterized in that: It includes a sound-absorbing part (2) connected by a connecting piece (3). The sound-absorbing part (2) includes a sound-absorbing cylinder (202). A channel communicating with a sound-absorbing bottom interface (204) and a sound-absorbing top interface (205) is arranged in the sound-absorbing cylinder (202), and a sound-absorbing dispersion block (201) is arranged in the channel; grooves for reflecting sound waves are arranged on the sound-absorbing dispersion block (201); the sound-absorbing bottom interface (204) is connected to a fixed disk (4) by a thread, and the fixed disk (4) is fixed by a fixing part (1).

2. The noise elimination device for a vacuum pump according to claim 1, characterized in that: The fixing part (1) includes a fixed outer shell (106) slidably arranged on the fixed disk (4). A fixed sliding rod (101) is slidably arranged in the fixed outer shell (106). A fixed sliding block (102) is fixedly arranged on the fixed sliding rod (101). A fixed locking piece one (103) and a fixed locking piece two (104) are rotatably arranged on the fixed sliding block (102); the fixed sliding block (102) is connected to the fixed outer shell (106) by a fixed return spring (105).

3. The noise elimination device for a vacuum pump according to claim 2, characterized in that: A fixed handle (108) is fixedly arranged at one end of the fixed outer shell (106), and a fixed locking nut (107) is connected to the outside of the fixed outer shell (106) by a thread.

4. The noise elimination device for a vacuum pump according to claim 3, wherein: A plurality of sound-absorbing rings (203) are connected to the outside of the sound-absorbing cylinder (202) by a thread.

5. The silencing device for a vacuum pump according to claim 4, wherein: External threads for cooperating with the connecting piece (3) are arranged on the outside of the sound-absorbing top interface (205), and internal threads for cooperating with the sound-absorbing top interface (205) are arranged in the sound-absorbing bottom interface (204).

6. The noise elimination device for a vacuum pump according to claim 5, characterized in that: The sound-absorbing dispersion block (201) is made of a sound-absorbing material.

7. The silencing device for a vacuum pump according to claim 6, characterized in that: The sound-absorbing cylinder (202) is filled with a sound-absorbing material.

8. The noise elimination device for a vacuum pump according to claim 7, characterized in that: The sound-absorbing ring (203) is filled with a sound-absorbing material.

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