Silencer

Abstract

The utility model provides a silencer which comprises a silencer body, and the silencer body is detachably connected with an exhaust pipe. A partition plate is arranged in the silencer body, a partition plate through hole is formed in the partition plate, and a silencing assembly is arranged between the partition plate through hole and an air inlet of the exhaust pipe. The silencing assembly comprises a baffle and an elastic piece, one end of the elastic piece is arranged on the end face of the outer end of an air inlet of the exhaust pipe, and the other end of the elastic piece is connected with the baffle. And the baffle plate operably covers the partition plate through hole, and when the baffle plate completely covers the partition plate through hole, the baffle plate enables the partition plate through hole not to be communicated with the exhaust pipe gas path. The silencer is good in silencing effect, simple in structure and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pump silencing devices, in particular to a muffler. Background Art

[0002] At present, with the rapid development of the vacuum pump market, users have higher and higher requirements on the performance of vacuum pumps and more and more stringent requirements on noise. Mufflers are also widely used at the exhaust ports of vacuum pump groups. However, the existing vacuum pump mufflers have the following disadvantages:

[0003] 1. The existing silencers have poor silencing effect on vacuum pumps, and there are few models that can be used and the structure is complex;

[0004] 2. It is difficult to clean the process materials inside the muffler at a later stage, which affects the maintenance cycle and the maintenance cost is high, which cannot meet the needs of enterprises.

[0005] The noise generated by the operation of the vacuum pump varies with the pumping speed and structure of the vacuum pump group. The noise frequency that needs to be solved is also different, and the requirements for the silencer structure and silencer material are also different. In addition, as the vacuum pump is used, it is inevitable that process materials will accumulate inside the silencer. Since the existing silencer structure cannot meet the silencer requirements of different types of vacuum pumps, and the existing silencer structure makes it difficult to clean the process materials accumulated inside the silencer during the subsequent maintenance process, the life of the silencer is ultimately shortened. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a muffler for solving the problem that the muffler in the prior art has a complex structure and the existing muffler structure has difficulty in cleaning the process materials accumulated inside the muffler during subsequent maintenance.

[0007] To achieve the above-mentioned purpose, the utility model provides a silencer, including a silencer body, which is detachably connected to an exhaust pipe; a partition is arranged in the silencer body, a partition through hole is opened on the partition, and a silencer assembly is arranged between the partition through hole and the air inlet of the exhaust pipe; the silencer assembly includes a baffle, and an elastic member, one end of the elastic member is arranged on the outer end face of the air inlet of the exhaust pipe, and the other end of the elastic member is connected to the baffle; the baffle is operably covered on the baffle through hole, and when the baffle completely covers the baffle through hole, the baffle prevents the baffle through hole from being connected to the exhaust pipe air path.

[0008] Preferably, the muffler body includes a first body and a second body, the first body and the second body are detachably connected; the second body and the exhaust pipe are detachably connected; the partition is arranged in the second body, and the partition divides the second body into a first chamber of the body and a second chamber of the body, and the muffler assembly is arranged in the second chamber of the body; a sealing plate is arranged at the end of the first chamber of the body away from the partition, and a connecting port is opened on the sealing plate, and the first chamber of the body is connected with the first body through the connecting port.

[0009] Preferably, the first body includes a first body shell and a first body air inlet pipe, the first body air inlet pipe is arranged in the first body shell, and there is a gap between the end of the first body air inlet pipe and the sealing plate; at least one second body air inlet pipe is provided on the side of the sealing plate away from the first chamber of the body, one end of the second body air inlet pipe is the connecting port, and the other end of the second body air inlet pipe is connected to the first body; the gas enters the first body shell from the first body air inlet pipe, and then enters the first chamber of the body through the second body air inlet pipe.

[0010] Preferably, a plurality of silencer holes are provided on the wall of the first main body air inlet pipe.

[0011] Preferably, a plurality of second main body air inlet pipes are provided on the sealing plate, and the plurality of second main body air inlet pipes are evenly arranged around the first main body air inlet pipe.

[0012] Preferably, at least one silencer hole plate is further provided inside the first main body, a plurality of silencer holes are opened on the silencer hole plate, a filling chamber is formed between the silencer hole plate and the inner wall of the first main body shell, and a silencer material is arranged in the filling chamber; there is a gap between the silencer material and the silencer hole plate.

[0013] Preferably, the silencer assembly further comprises a sealing member, wherein the sealing member is arranged on an end surface of the baffle away from the elastic member, and the sealing member is arranged to protrude from the baffle.

[0014] Preferably, the end surface of the sealing member away from the baffle is a plane.

[0015] Preferably, the muffler body is made of metal material, and the sealing component is made of non-metal material.

[0016] Preferably, the central axis of the baffle, the central axis of the partition through hole, and the central axis of the elastic member coincide with each other.

[0017] As described above, the muffler involved in the utility model has at least one of the following beneficial effects:

[0018] 1. The muffler involved in the utility model has a simple structure, and it is easy to clean the process materials accumulated inside the muffler during subsequent maintenance and repair, and the muffler has a long service life.

[0019] 2. The silencer involved in the utility model has a detachable connection between the first body, the second body and the exhaust pipe. Different specifications of the first body and the exhaust pipe can be selected according to different vacuum pumps and process conditions, which is convenient for modification, has a wide range of uses, and is easy to disassemble for subsequent repair and maintenance.

[0020] 3. The muffler involved in the utility model, after the exhaust gas enters the muffler, it passes through the muffler holes on the air inlet pipe of the first body, the diffusion in the first body, the muffler holes on the muffler hole plate, and the muffler material in the filling chamber to perform quadruple muffler in the first body; when flowing in the second body, it passes through the diffusion of the first chamber of the body, the isolation of the baffle, the elastic force of the elastic member, and the diffusion of the second chamber of the body, thereby realizing quadruple muffler, effectively reducing the noise during exhaust gas emission, and having a good muffler effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of the muffler involved in the utility model;

[0022] Figure 2 This is a schematic diagram of the first main body space of the silencer involved in the utility model;

[0023] Figure 3 It is a schematic diagram of the second main body space of the silencer involved in the utility model.

[0024] Description of reference numerals:

[0025] 1. First body; 101. First body shell; 102. Filling chamber; 103. Silencing hole plate; 104. Silencing hole; 105. First body air inlet pipe;

[0026] 2. Second body; 201. First chamber of the body; 202. Second chamber of the body; 203. Partition; 204. Sealing member; 205. Baffle; 206. Elastic member; 207. Second body housing; 208. Sealing ring; 209. Fastener; 210. Second body air inlet pipe; 211. Sealing plate;

[0027] 3. Exhaust pipe. DETAILED DESCRIPTION

[0028] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0029] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0030] like Figure 1-Figure 3 As shown, the utility model provides a silencer, including a silencer body, the silencer body can be detachably connected to the exhaust pipe 3, the exhaust port of the silencer body and the air inlet of the exhaust pipe 3 are sealed and connected; a partition 203 is arranged in the silencer body, a partition through hole is opened on the central axis of the partition 203, and a silencer assembly is arranged between the partition through hole and the air inlet of the exhaust pipe 3; the silencer assembly includes a baffle 205 and an elastic member 206, the right end of the elastic member 206 is arranged on the outer end face of the air inlet of the exhaust pipe 3, and the left end of the elastic member 206 is connected to the baffle 205; the baffle 205 covers the baffle through hole.

[0031] The muffler involved in the utility model has a partition 203 arranged in the muffler body, a partition through hole arranged on the partition 203, a baffle 205 covering the partition through hole, and the baffle 205 abuts against the partition 203 by means of an elastic member 206, thereby covering and sealing the partition through hole. The muffler can be used to silence the exhaust gas discharged from a vacuum pump. When the exhaust gas discharged from the vacuum pump is passed into the muffler body, the exhaust gas needs to overcome the baffle of the baffle 205 and the elastic force of the elastic member 206, and then enter the exhaust pipe 3 for discharge. In the process of overcoming the baffle of the baffle 205 and the elastic force of the elastic member 206, the muffler can be effectively silenced, and has a wide range of applications. At the same time, the muffler body and the exhaust pipe 3 can be disassembled, which solves the problem that the structure of the muffler in the prior art is complicated, which makes it difficult to clean the process materials accumulated inside the muffler during the subsequent maintenance process, and finally shortens the life of the muffler.

[0032] Preferably, Figure 1 As shown, in this embodiment, the elastic member 206 is a spring.

[0033] Preferably, Figure 1As shown, the silencer assembly further includes a seal 204, which is disposed on the left end surface of the baffle 205, and the seal 204 protrudes to the left from the left end surface of the baffle 205. Furthermore, the left end surface of the seal 204 is a plane; thus, the left end surface of the baffle 205 and the partition through hole are covered and sealed by the seal 204, which can effectively ensure the sealing performance. Moreover, the sealing surface is a plane, which has a better sealing effect than the linear sealing surface when the previous sealing structure adopts an O-ring.

[0034] Preferably, the muffler body is made of metal material, and the seal 204 is made of non-metal material. The non-metal material can be made of rubber, PTFE and other materials. In this embodiment, the seal 204 is made of PTFE material. The PTFE material has excellent wear resistance and stable sealing performance. Correspondingly, in other embodiments, the seal 204 can be made of other materials, and can be adaptively adjusted according to different vacuum pumps and operating conditions.

[0035] The purpose of setting the seal 204 in the present application is: first, to ensure the sealing contact between the seal 204 and the partition 203, without making the left end of the baffle 205 directly sealed and in contact with the partition 203, so as to effectively seal and reduce shock. Second, the material of the seal 204 is non-metallic material, and the material of the partition 203 is stainless steel or other metal material. When the seal 204 made of non-metallic material and the partition 203 are in contact or separated under the action of the elastic member 206, no loud noise will be generated, so that new noise can be avoided in the process of silencing. Third, the seal 204 is set to play the effect of one-way conduction to prevent gas backflow.

[0036] Preferably, Figure 1 As shown, the central axis of the baffle 205, the central axis of the partition through hole, and the central axis of the elastic member 206 coincide with each other. In this embodiment, the purpose of aligning the central axes of the above three is to ensure that the baffle 205 is subjected to uniform force, to avoid the elastic member 206 from falling off due to uneven force on the baffle 205 for a long time, and to prevent the sealing of the sealing member 204 from failing, resulting in damage to the muffler.

[0037] Specific structure such as Figure 1 As shown, the air inlet of the exhaust pipe 3 ( Figure 1 An exhaust pipe groove is provided on the outer end surface of the left end of the middle exhaust pipe 3, and a baffle groove is provided on the right end surface of the baffle 205. The right end of the elastic member 206 is clamped in the exhaust pipe groove, and the left end is clamped in the baffle groove. The purpose of providing the baffle groove and the exhaust pipe groove is to facilitate the installation of the elastic member 206.

[0038] Preferably, Figure 1 , Figure 3As shown, the muffler body includes a first body 1 and a second body 2, the first body 1 and the second body 2 are detachably connected, and the exhaust port of the first body 1 is sealed and connected to the air inlet of the second body 2; the second body 2 and the exhaust pipe 3 are detachably connected; a partition 203 is arranged in the second body 2, and the partition 203 divides the second body 2 into a first chamber 201 of the body and a second chamber 202 of the body, and the muffler assembly is arranged in the second chamber 202 of the body; a sealing plate 211 is arranged at the left end of the first chamber 201 of the body, and a connecting port connecting the first body 1 and the first chamber 201 of the body is opened on the left end surface of the sealing plate 211. The structure of the detachable connection of the first body 1, the second body 2 and the exhaust pipe 3 is convenient for modification. When different specifications of vacuum pumps under different process conditions are used for muffler, the first body 1 and the exhaust pipe 3 of different specifications can be replaced, which has a wide range of uses and low modification cost, and is easy to disassemble during subsequent maintenance, which can save maintenance labor costs.

[0039] Further, a plurality of second main body air inlet pipes 210 are arranged on the left end surface of the sealing plate 211, the right end of the second main body air inlet pipe 210 is connected to the first main body chamber 201, and the left end of the second main body air inlet pipe 210 is located in the first main body 1. In the present embodiment, the number of the second main body air inlet pipes 210 is four, and the angular spacing between adjacent second main body air inlet pipes 210 is 90°. It should be understood that the number of the second main body air inlet pipes 210 is not limited to four, and can also be set to two, three or more than four, and the second main body air inlet pipes 210 can be evenly arranged or unevenly arranged without departing from the scope of the present utility model. The plurality of second main body air inlet pipes 210 are evenly arranged on the periphery of the first main body air inlet pipe 105, which can ensure that the airflow to the baffle 205 is uniform, thereby ensuring that the baffle 205 is uniformly stressed, avoiding the elastic member 206 from falling off due to the uneven stress on the baffle 205 for a long time, and then the sealing failure of the sealing member 204, resulting in damage to the muffler.

[0040] Preferably, Figure 1 , Figure 2As shown, the first body 1 includes a first body shell 101 and a first body air inlet pipe 105. The first body air inlet pipe 105 is arranged in the first body shell 101. There is a gap between the right end of the first body air inlet pipe 105 and the left end face of the sealing plate 211. The gas enters the first body shell 101 from the first body air inlet pipe 105, and then enters the first chamber 201 of the body through the second body air inlet pipe 210. The exhaust gas discharged by the vacuum pump first enters the first body 1 through the first body air inlet pipe 105, and then escapes from the right end of the first body air inlet pipe 105 to the first body shell 101. At this time, the exhaust gas is initially silenced, and then enters from the left side of the second body air inlet pipe 210 from the first body shell 101. At this time, the exhaust gas is silenced again. In the bent gas channel inside the first body 1, the energy of the gas is released multiple times, which effectively silences the gas.

[0041] Furthermore, a plurality of silencer holes 104 are provided on the wall of the first main body air intake pipe 105. When the exhaust gas discharged by the vacuum pump flows through the first main body air intake pipe 105, the plurality of silencer holes 104 effectively reduce the energy of the exhaust gas and effectively silence the sound.

[0042] Preferably, Figure 1 , Figure 2 As shown, at least one silencer hole plate 103 is further provided inside the first body 1, and a plurality of silencer holes 104 are provided on the silencer hole plate 103. The exhaust gas needs to be silenced by the silencer hole plate 103 when entering the second body intake pipe 210 from the first body intake pipe 105. The number of layers of the silencer hole plate 103 can be adaptively adjusted according to different vacuum pumps and operating conditions to achieve better silencer effect.

[0043] Furthermore, in this embodiment, the shapes, sizes, distances and angles of the silencer holes 104 opened on the tube wall of the first main body air inlet pipe 105 and the silencer holes 104 opened on the silencer hole plate 103 can be adaptively adjusted according to different vacuum pumps.

[0044] Preferably, Figure 1 , Figure 2 As shown, a filling chamber 102 is formed between the silencer hole plate 103 and the inner wall of the first main body shell 101, and a silencer material is arranged in the filling chamber 102; there is a gap between the silencer material and the silencer hole plate 103. In this embodiment, the material of the silencer material is adaptively adjusted according to different vacuum pumps and operating conditions, for example, silencer cotton, rubber material, etc. In addition, in this application, a gap is provided between the silencer material and the silencer hole plate 103 to achieve a better silencer effect. The silencer effect is verified by experiments as follows: the filling chamber 102 is not filled with silencer material < the filling chamber 102 is completely filled with silencer material < there is a gap between the silencer material in the filling chamber 102 and the silencer hole plate 103.

[0045] Preferably, Figure 1 , Figure 3 As shown, the second body 2 further includes a second body shell 207, the exhaust port end face of the first body shell 101 and the air inlet end face of the second body shell 207 are sealed and connected via a sealing ring 208 and a fastener 209; the exhaust port end face of the second body shell 207 and the air inlet end face of the exhaust pipe 3 are sealed and connected via a sealing ring 208 and a fastener 209. Further, in this embodiment, the material of the sealing ring 208 can be adaptively adjusted according to different vacuum pumps and operating conditions; the fastener 209 is a bolt.

[0046] Preferably, Figure 1 , Figure 3 As shown, when the first body 1 and the second body 2 are assembled, the distance between the right end port of the first body air inlet pipe 105 and the sealing plate 211 of the second body 2 is 2-5 mm.

[0047] The silencer involved in the utility model has the following silencing process:

[0048] First, if Figure 1 As shown by the arrow in , the operator connects the exhaust gas of the vacuum pump to the first main body air intake pipe 105. The exhaust gas flows in the first main body air intake pipe 105 and hits the sealing plate 211 of the second main body 2, then diffuses into the first main body 1, and then enters the main body first chamber 201 through the second main body air intake pipe 210 for diffusion and mixing, so that the exhaust gas enters the second main body 2 from the first main body 1. When the exhaust gas flows in the first main body 1, it will pass through the silencer hole 104 on the first main body air intake pipe 105, diffuse in the first main body 1, the silencer hole 104 on the silencer hole plate 103, and the silencer material in the filling chamber 102 for quadruple silencer.

[0049] Then, the exhaust gas in the first chamber 201 of the main body exerts a force on the baffle 205. When the exhaust gas overcomes the elastic force of the elastic member 206, the exhaust gas lifts the baffle 205, and the exhaust gas diffuses from the first chamber 201 of the main body to the second chamber 202 of the main body for convergence, and then enters the exhaust pipe 3 to realize the exhaust gas discharge. When the exhaust gas flows in the second body 2, it will pass through the diffusion of the first chamber 201 of the main body, the isolation of the baffle 205, the elastic force of the elastic member 206, and the diffusion of the second chamber 202 of the main body, thereby realizing quadruple silencer.

[0050] In this way, the exhaust gas passes through the quadruple silencer in the first body 1 and the quadruple silencer in the second body 2 and is finally discharged through the exhaust pipe 3, which can effectively reduce the noise when the vacuum pump exhaust gas is discharged.

[0051] The muffler involved in the utility model has the following beneficial effects:

[0052] 1. The muffler involved in the utility model has a simple structure, and it is easy to clean the process materials accumulated inside the muffler during subsequent maintenance and repair, and the muffler has a long service life.

[0053] 2. The silencer involved in the utility model has a detachable connection between the first body 1, the second body 2 and the exhaust pipe 3. Different specifications of the first body 1 and the exhaust pipe 3 can be selected according to different vacuum pumps and process conditions, which is convenient for modification, has a wide range of uses, and is easy to disassemble for subsequent repair and maintenance.

[0054] 3. The muffler involved in the utility model, after the exhaust gas enters the muffler, it passes through the muffler hole 104 on the first main body air intake pipe 105, the diffusion in the first main body 1, the muffler hole 104 on the muffler hole plate 103, and the muffler material in the filling chamber 102 in the first main body 1 for quadruple muffler; when flowing in the second main body 2, it passes through the diffusion of the first chamber 201 of the main body, the isolation of the baffle 205, the elastic force of the elastic member 206, and the diffusion of the second chamber 202 of the main body, thereby achieving quadruple muffler, effectively reducing the noise during exhaust gas emission, and having a good muffler effect. In summary, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0055] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A muffler, characterized in that: The invention comprises a muffler body, wherein the muffler body and the exhaust pipe (3) are detachably connected; a partition (203) is arranged in the muffler body, a partition through hole is opened on the partition (203), and a muffler assembly is arranged between the partition through hole and the air inlet of the exhaust pipe (3); the muffler assembly comprises a baffle (205) and an elastic member (206), one end of the elastic member (206) is arranged on the outer end surface of the air inlet of the exhaust pipe (3), and the other end of the elastic member (206) is connected to the baffle (205); the baffle (205) can be operated to completely cover the baffle through hole, and when the baffle (205) completely covers the baffle through hole, the baffle (205) prevents the baffle through hole from being connected to the air path of the exhaust pipe (3).

2. The muffler according to claim 1, characterized in that: The silencer body comprises a first body (1) and a second body (2), wherein the first body (1) and the second body (2) are detachably connected; the second body (2) and the exhaust pipe (3) are detachably connected; the partition (203) is arranged in the second body (2), and the partition (203) divides the second body (2) into a first body chamber (201) and a second body chamber (202), and the silencer assembly is arranged in the second body chamber (202); a sealing plate (211) is arranged at the end of the first body chamber (201) away from the partition (203), and a connecting port is opened on the sealing plate (211), and the first body chamber (201) is connected with the first body (1) through the connecting port.

3. The muffler according to claim 2, characterized in that: The first body (1) comprises a first body shell (101) and a first body air inlet pipe (105), wherein the first body air inlet pipe (105) is arranged in the first body shell (101), and there is a gap between the end of the first body air inlet pipe (105) and the sealing plate (211); at least one second body air inlet pipe (210) is arranged on the side of the sealing plate (211) away from the first body chamber (201), one end of the second body air inlet pipe (210) is the connecting port, and the other end of the second body air inlet pipe (210) is connected to the first body (1); gas enters the first body shell (101) from the first body air inlet pipe (105), and then enters the first body chamber (201) through the second body air inlet pipe (210).

4. The muffler according to claim 3, characterized in that: A plurality of silencer holes (104) are provided on the wall of the first main body air inlet pipe (105).

5. The muffler according to claim 3, characterized in that: A plurality of second main body air inlet pipes (210) are disposed on the sealing plate (211), and the plurality of second main body air inlet pipes (210) are evenly arranged around the first main body air inlet pipe (105).

6. The muffler according to claim 2, characterized in that: At least one silencer hole plate (103) is further arranged inside the first main body (1), a plurality of silencer holes (104) are opened on the silencer hole plate (103), a filling chamber (102) is formed between the silencer hole plate (103) and the inner wall of the first main body shell (101), and silencer material is arranged in the filling chamber (102); and a gap exists between the silencer material and the silencer hole plate (103).

7. The muffler according to claim 1, characterized in that: The muffler assembly further comprises a sealing member (204), wherein the sealing member (204) is arranged on an end surface of the baffle (205) away from the elastic member (206), and the sealing member (204) is arranged to protrude from the baffle (205).

8. The muffler according to claim 7, characterized in that: The end surface of the sealing member (204) away from the baffle (205) is a plane.

9. The muffler according to claim 7, characterized in that: The muffler body is made of metal material, and the sealing component (204) is made of non-metal material.

10. The muffler according to claim 1, characterized in that: The central axis of the baffle (205), the central axis of the partition through hole, and the central axis of the elastic member (206) coincide with each other.

Images