Detachable and washable silencer for screw vacuum pump

Abstract

The detachable and washable silencer for the screw vacuum pump comprises a pump body and a noise reduction device, the output end of the pump body is fixedly connected with a second connecting block, the input end of the noise reduction device is fixedly connected with a first connecting block, the side wall of one side of the first connecting block is fixedly connected with two connecting columns, and the side wall of the other side of the first connecting block is fixedly connected with a second connecting block. The side wall of one side of the first connecting block is provided with two connecting columns, the sides, away from each other, of the two connecting columns are provided with inserting grooves, the side wall of one side of the second connecting block is provided with two connecting grooves, the two connecting columns are fixed in the two connecting grooves through fixing assemblies, and one side of the first connecting block is provided with a dustproof assembly located between the two connecting columns. According to the utility model, rapid and stable connection is realized, a dustproof function is provided, the reliability of equipment is improved, the installation and maintenance processes are simplified, and the maintenance convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pump noise reduction, in particular to a muffler for a detachable screw vacuum pump. Background Technique

[0002] The screw vacuum pump is a dry vacuum pump that emerged and developed rapidly in the early 1990s. With its advantages of being clean and oil-free, wide pumping speed range, simple and compact structure, no friction of the pumping chamber components, long service life, low energy consumption, and no oil pollution, it has been widely used in industries such as microelectronics, semiconductors, pharmaceuticals, and precision machining.

[0003] The existing Chinese patent with the publication number CN205117733U and the name of a muffler for a detachable screw vacuum pump includes a cylinder body, an inner sleeve, and an exhaust pipe. An air inlet is provided on the side wall of the cylinder body near one of its ports. The inner sleeve is arranged inside the cylinder body, the exhaust pipe is arranged inside the inner sleeve, one end of the exhaust pipe extends out of the inner sleeve and the end of the other end of the cylinder body, and a reinforcement plate fixedly connected with the cylinder body is provided at the end of the exhaust pipe extending out of the inner sleeve. The port on one side of the air inlet of the cylinder body is hermetically connected through an end cover. One end of the inner sleeve is fixed in the middle of the end cover, and there is a certain distance between the other end of the inner sleeve and the reinforcement plate, and there is a certain distance between the exhaust pipe and the end cover. At least three juxtaposed butterfly baffles are provided on both the inner sleeve and the exhaust pipe. The advantage is that the process of the exhaust backwash of the pump is expanded and slowed down to a multi-stage decreasing backwash process, dispersing the energy of the airflow backwash and reducing the impact intensity of the backwash airflow. In this patent, the connection between the muffler body and the vacuum pump is realized through a flange plate, and the complexity of this connection method will reduce the working efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to solve the disadvantages existing in the prior art, and to propose a muffler for a detachable screw vacuum pump.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A muffler for a detachable screw vacuum pump includes a pump body and a noise reducer. The output end of the pump body is fixedly connected with a second connection block, the input end of the noise reducer is fixedly connected with a first connection block. Two connection columns are fixedly connected to one side wall of the first connection block. Plugging grooves are opened on the sides of the two connection columns away from each other. Two connection grooves are opened on one side wall of the second connection block. The two connection columns are fixed in the two connection grooves through a fixing component, and a dust-proof component located between the two connection columns is provided on one side of the first connection block.

[0007] As a further improvement of the present utility model, the fixing assembly includes a support frame fixedly connected to the side wall of the second connection block. An insertion post is arranged inside the support frame. One end of the insertion post penetrates through the connection groove and is inserted into the insertion slot. The other end of the insertion post penetrates through the support frame and is fixedly connected to a handle. A sliding plate is fixedly sleeved on the end of the insertion post located inside the support frame. Two springs are fixedly connected to one side of the sliding plate. The other ends of the two springs are fixedly connected to the inner side wall of the support frame.

[0008] As a further improvement of the present utility model, the dust-proof assembly includes a sealing gasket fixedly connected to one side wall of the first connection block. The sealing gasket is located between the two connection columns, and a dust-proof net is installed inside the sealing gasket.

[0009] As a further improvement of the present utility model, the sealing gasket is made of rubber material.

[0010] As a further improvement of the present utility model, the first connection block and the second connection block have the same size and dimensions.

[0011] As a further improvement of the present utility model, the dust-proof net is a stainless steel wire mesh.

[0012] Advantages of the present utility model:

[0013] By providing the dust-proof assembly, the dust-proof net can effectively prevent dust from entering the noise reducer to affect its noise reduction effect. At the same time, the dust-proof net is a stainless steel wire mesh. Utilizing the porosity of the stainless steel wire mesh, it can effectively reduce the noise of the pneumatic system or exhaust equipment, and at the same time prevent or reduce the transmission of sound, and it does not deform when working under high temperature and high pressure.

[0014] By providing the fixing assembly, the first connection block and the second connection block, by inserting the two connection columns on the first connection block into the two connection grooves and simultaneously pulling the two handles to drive the two insertion posts out of the connection grooves. When the two connection columns are inserted into the two connection grooves, release the two handles, and the two handles will respectively reset under the elastic force of the two springs and respectively make the two insertion posts inserted into the two insertion slots. At this time, the fixation between the first connection block and the second connection block is completed, and indirectly the connection between the pump body and the noise reducer is completed, which can simplify the connection process between components and improve work efficiency.

[0015] The present utility model realizes fast and stable connection and is equipped with a dust-proof function, which not only improves the reliability of the equipment, but also simplifies the installation and maintenance processes and improves the convenience of maintenance. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a muffler for a detachable screw vacuum pump proposed by the present utility model;

[0017] Figure 2 Schematic structural diagram of a partial section connected by a second connection block, a fixing component, a connection groove, a plug-in groove, and a connection column of a muffler for a detachable and washable screw vacuum pump proposed by the present utility model;

[0018] Figure 3 Schematic structural diagram of a dust-proof component, a first connection block, a plug-in groove, and a connection column of a muffler for a detachable and washable screw vacuum pump proposed by the present utility model.

[0019] In the figure: 1 pump body, 2 noise reducer, 3 first connection block, 4 second connection block, 5 connection groove, 6 connection column, 7 plug-in groove, 8 support frame, 9 spring, 10 plug post, 11 gasket, 12 dust-proof net, 13 handle, 14 sliding plate. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] Figures 1 - 3 A muffler for a detachable and washable screw vacuum pump includes a pump body 1 and a noise reducer 2. The output end of the pump body 1 is fixedly connected by welding with a second connection block 4. The second connection block 4 is of a circular ring structure. The input end of the noise reducer 2 is fixedly connected by welding with a first connection block 3 having the same size and dimensions as the second connection block 4. Two rectangular connection columns 6 are fixedly connected to one side wall of the first connection block 3. Circular plug-in grooves 7 are opened on the sides of the two connection columns 6 away from each other. Two connection grooves 5 having the same size as the connection columns 6 are opened on one side wall of the second connection block 4. The two connection columns 6 are fixed in the two connection grooves 5 through a fixing component. The fixing component includes a support frame 8 fixedly connected to the side wall of the second connection block 4. The support frame 8 is of a U-shaped structure. An insertion post 10 that fits the size of the plug-in groove 7 is provided inside the support frame 8. One end of the insertion post 10 passes through the connection groove 5 and is inserted into the plug-in groove 7. The other end of the insertion post 10 passes through the support frame 8 and is fixedly connected with a handle 13 for assisting in pulling out the insertion post 10. A rectangular sliding plate 14 is fixedly sleeved on the end of the insertion post 10 located inside the support frame 8. Two springs 9 are fixedly connected to one side of the sliding plate 14. The other ends of the two springs 9 are fixedly connected to the inner side wall of the support frame 8. The sliding plate 14 is used for the insertion post 10 to be subjected to the elastic force of the two springs 9, thereby driving it to reset.

[0022] On one side of the first connecting block 3, there is a dust-proof component located between two connecting columns 6. The dust-proof component includes a gasket 11 fixedly connected to the side wall of one side of the first connecting block 3. The gasket 11 is used to prevent leakage when the first connecting block 3 is connected to the second connecting block 4. The gasket 11 is made of rubber. The gasket 11 is located between the two connecting columns 6. A dust-proof net 12 for dust prevention is installed inside the gasket 11. The dust-proof net 12 is a stainless steel wire mesh. By using the porosity of the stainless steel wire mesh, the noise of the pneumatic system or the exhaust device can be effectively reduced, and at the same time, the transmission of sound can be prevented or reduced, and it will not deform when working under high temperature and high pressure.

[0023] When the present utility model is in use, the worker first inserts the two connecting columns 6 on the first connecting block 3 into the two connecting grooves 5. At the same time, the worker pulls the two handles 13 to drive the two inserting posts 10 out of the connecting grooves 5. After the two connecting columns 6 are inserted into the two connecting grooves 5, the two handles 13 are released. The two handles 13 will respectively reset under the elastic force of the two springs 9 and respectively make the two inserting posts 10 inserted into the two inserting grooves 7. At this time, the fixation between the first connecting block 3 and the second connecting block 4 is completed, and indirectly the connection between the pump body 1 and the noise reducer 2 is completed. When disassembly is required, only need to pull the two handles 13 on both sides to make the two inserting posts 10 out of the two inserting grooves 7, and then pull the body of the noise reducer 2 to make the two connecting columns 6 on the first connecting block 3 out of the two connecting grooves 5, then the disassembly of the noise reducer 2 can be completed, so as to facilitate its cleaning.

[0024] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A muffler for a detachable and washable screw vacuum pump, comprising a pump body (1) and a noise reducer (2), characterized in that, The output end of the pump body (1) is fixedly connected to a second connection block (4), the input end of the noise reducer (2) is fixedly connected to a first connection block (3), two connection columns (6) are fixedly connected to one side wall of the first connection block (3), plugging slots (7) are formed on the sides of the two connection columns (6) away from each other, two connection slots (5) are formed on one side wall of the second connection block (4), and the two connection columns (6) are both fixed in the two connection slots (5) through a fixing component. A dust-proof component located between the two connection columns (6) is arranged on one side of the first connection block (3).

2. The muffler for a detachable and washable screw vacuum pump according to claim 1, characterized in that, The fixing component includes a support frame (8) fixedly connected to the side wall of the second connection block (4), a plug post (10) is arranged inside the support frame (8), one end of the plug post (10) penetrates through the connection slot (5) and is plugged in the plugging slot (7), the other end of the plug post (10) penetrates through the support frame (8) and is fixedly connected to a handle (13), a sliding plate (14) is fixedly sleeved on the end of the plug post (10) located inside the support frame (8), two springs (9) are fixedly connected to one side of the sliding plate (14), and the other ends of the two springs (9) are fixedly connected to the inner side wall of the support frame (8).

3. The muffler for a detachable and washable screw vacuum pump according to claim 1, characterized in that, The dust-proof component includes a sealing gasket (11) fixedly connected to one side wall of the first connection block (3), the sealing gasket (11) is located between the two connection columns (6), and a dust-proof net (12) is installed inside the sealing gasket (11).

4. The muffler for a detachable and washable screw vacuum pump according to claim 3, characterized in that, The sealing gasket (11) is made of rubber material.

5. The muffler for a detachable and washable screw vacuum pump according to claim 1, characterized in that, The first connection block (3) and the second connection block (4) have the same size and dimensions.

6. The muffler for a detachable and washable screw vacuum pump according to claim 3, wherein, The dust-proof net (12) is a stainless steel wire mesh.

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