Fan inlet pipe type silencer

Abstract

The utility model relates to the technical field of silencers, and discloses a fan inlet pipe type silencer which comprises a silencer body. A silencing assembly is arranged in the silencer, a dust removal assembly is arranged at the left end of the silencer, a sealing assembly is arranged between the silencer and the dust removal assembly, the dust removal assembly is fixed to the outer side of the left end of the silencer through a fixing assembly, and a connecting piece is arranged at the right end of the silencer. The silencer comprises a supporting inner pipe layer, a silencing pipe layer and a sound insulation pipe layer which are sequentially arranged from inside to outside, the supporting inner pipe layer is provided with a through hole communicated with the silencing pipe layer, the silencing assembly comprises two baffles arranged in a silencer pipe, one end of each baffle is connected with the inner wall of the supporting inner pipe layer, and the other end of each baffle is connected with the inner wall of the sound insulation pipe layer. The noise absorption device can effectively absorb noise of pipeline fluid, is provided with the filtering assembly, can be flexibly drawn out, is convenient to operate, clean or replace, can improve the filtering and dust removal effect, and is simple in structure and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of silencers, in particular to a fan inlet pipe silencer. Background Art

[0002] Roots blower is a type of positive displacement blower. It has two three-blade impellers that rotate relative to each other in a space sealed by a casing and a wall panel. The principle is that it is a rotary compressor that compresses and transports gas by making two blade-shaped rotors move relative to each other in a cylinder.

[0003] When the Roots blower is in use, it will produce a lot of noise because of the continuous air intake and exhaust. In order to reduce the impact of noise, a muffler is usually installed at the inlet and outlet of the Roots blower. The muffler at the inlet of the blower generally includes a tube muffler and a disc muffler.

[0004] The new Roots blowers on the market produce loud noise when in use, and the silencers of most new Roots blowers are inconvenient to install and disassemble, which greatly affects the subsequent use of the new Roots blowers. In addition, the silencer effect of some silencers is poor, which reduces the practicality of the new Roots blowers. For this reason, we propose a blower inlet tube silencer. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a fan inlet pipe silencer that can effectively absorb the noise of the pipeline fluid and has a filter component that can be flexibly pulled out, is easy to operate, and is convenient to clean or replace, thereby improving the filtering and dust removal effect. It has a simple structure and high practicality, and can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fan inlet pipe silencer includes a silencer;

[0007] The silencer is provided with an inner silencer assembly, the left end of the silencer is provided with a dust removal assembly, a sealing assembly is provided between the silencer and the dust removal assembly, the dust removal assembly is fixed to the outer side of the left end of the silencer through a fixing assembly, and the right end of the silencer is provided with a connecting piece;

[0008] The silencer comprises a supporting inner tube layer, a sound-absorbing tube layer and a sound-isolating tube layer which are sequentially arranged from the inside to the outside, and the supporting inner tube layer is provided with a through hole communicating with the sound-absorbing tube layer.

[0009] The silencer adopts a layered design, and the supporting inner tube layer makes the entire silencer tube have sufficient strength; the supporting inner tube layer is provided with a through hole connected to the silencer tube layer, and the silencer tube layer can effectively absorb the noise of the pipeline fluid through the through hole; the soundproof tube layer further isolates the noise in the pipe from leaking to the outside. The structure of the entire silencer is simple, and can effectively reduce the noise of the fluid in the pipeline.

[0010] Furthermore, the silencer assembly includes two baffles arranged in the silencer pipe, one end of each baffle is connected to the inner wall of the supporting inner tube layer, and a certain gap is maintained between the other end and the inner wall of the supporting inner tube layer. The two baffles separate the silencer pipe into an "S" shaped loop, and the space between the two baffles is filled with a layer of sound-absorbing material.

[0011] When the air flow flows in the muffler pipe, the two baffles separate the muffler pipe into an "S"-shaped loop, thereby extending the flow path of the fluid and increasing the distance over which the sound waves are consumed; the sound-absorbing material layer between the two baffles can effectively absorb the noise of the fluid flowing through the sound-absorbing material layer.

[0012] Furthermore, the dust removal assembly includes a detachable part, a front surface of the detachable part is provided with a circular hole whose diameter is larger than the diameter of the left side pipe of the muffler, and an upper side of the detachable part is provided with three equidistantly arranged rectangular grooves, each of which has a filter plate slidingly arranged inside the rectangular groove, and each of the filter plates is fixedly connected to an installation frame on the upper side, and a handle is fixedly provided on the middle part of the upper side of each installation frame.

[0013] The filter plate can be actively installed or removed through the handle and the installation frame. It can be flexibly pulled out, easy to operate, and convenient to clean or replace. The inside of the filter plate is an activated carbon net, which can improve the filtering and dust removal effect.

[0014] Furthermore, the sealing assembly includes a sealing groove and a sealing strip, the left end surface of the muffler is provided with an annular sealing groove, the right end surface of the detachable part is fixedly connected with an annular sealing strip, and the sealing groove is plugged into the sealing strip.

[0015] The sealing groove is plugged into the sealing strip, which can preliminarily fix the detachable part on the left end surface of the muffler, and improve the sealing effect of the muffler, which is beneficial to improving the silencing effect.

[0016] Furthermore, the fixing assembly includes a connecting block, an electric telescopic rod and an arc-shaped fixing plate. The four corners of the right end face of the detachable part are fixedly connected with a connecting block. The inner side of the connecting block is a 45° inclined surface. The 45° inclined surface is fixedly connected with the electric telescopic rod. The output end of the electric telescopic rod is fixedly connected to the arc-shaped fixing plate, and the arc-shaped fixing plate is in contact with the outer arc surface of the muffler.

[0017] After the sealing groove is plugged into the sealing strip, the electric telescopic rod is controlled to extend so that the arc-shaped fixing plate is in close contact with the outer arc surface of the muffler, so that the detachable part can be fixed to the muffler, which is beneficial to improve the stability of the muffler.

[0018] Furthermore, the connecting piece includes a flange and positioning holes, the outer arc surface of the right end of the muffler is fixedly connected with the flange, and the left surface of the flange is provided with evenly distributed positioning holes.

[0019] The arrangement of the flange and the positioning hole can fix the connection between the muffler and the fan.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The silencer adopts a layered design, and the supporting inner tube layer makes the entire silencer tube have sufficient strength; the supporting inner tube layer is provided with a through hole connected to the silencer tube layer, and the silencer tube layer can effectively absorb the noise of the pipeline fluid through the through hole; the sound insulation tube layer further isolates the noise in the tube from leaking to the outside. The structure of the whole silencer is simple, which can effectively reduce the noise of the fluid in the pipeline. When the airflow flows in the silencer pipe, the two baffles separate the silencer pipe into an "S" shaped loop, thereby extending the flow path of the fluid and increasing the distance that the sound waves are consumed; the sound-absorbing material layer between the two baffles can effectively absorb the noise of the fluid flowing through the sound-absorbing material layer.

[0022] 2. The filter plate can be actively installed or removed through the handle and the installation frame. It can be flexibly pulled out, easy to operate, and convenient to clean or replace. The inside of the filter plate is an activated carbon net, which can improve the filtering and dust removal effect. The sealing groove and the sealing strip are plugged in, and the detachable part can be initially fixed on the left end face of the muffler, which improves the sealing effect of the muffler, which is beneficial to improve the silencing effect.

[0023] 3. After the sealing groove and the sealing strip are plugged in, control the electric telescopic rod to extend so that the arc-shaped fixing plate is in close contact with the outer arc surface of the muffler. This can fix the detachable parts to the muffler, which is beneficial to improve the stability of the muffler. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model.

[0025] Figure 2 It is a schematic diagram of the front section of the structure of the utility model.

[0026] Figure 3 The utility model structure Figure 2 Enlarged schematic diagram at point A in the middle.

[0027] Figure 4 It is a front view schematic diagram of the structure of the utility model.

[0028] In the figure: 1 silencer, 11 supporting inner tube layer, 12 silencer tube layer, 13 sound insulation tube layer, 2 silencer assembly, 21 baffle, 22 sound absorbing material layer, 3 dust removal assembly, 31 detachable part, 32 round hole, 33 rectangular groove, 34 filter plate, 35 mounting frame, 36 handle, 4 sealing assembly, 41 sealing groove, 42 sealing strip, 5 fixing assembly, 51 connecting block, 52 electric telescopic rod, 53 arc fixing plate, 6 connecting piece, 61 flange, 62 positioning hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-4 The present embodiment provides a technical solution: a fan inlet pipe silencer includes a silencer 1; an inner silencer component 2 is provided inside the silencer 1, a dust removal component 3 is provided at the left end of the silencer 1, a sealing component 4 is provided between the silencer 1 and the dust removal component 3, the dust removal component 3 is fixed to the outer side of the left end of the silencer 1 through a fixing component 5, and a connecting piece 6 is provided at the right end of the silencer 1; the silencer 1 includes a supporting inner pipe layer 11, a silencer pipe layer 12 and a sound insulation pipe layer 13 which are arranged in sequence from the inside to the outside, and the supporting inner pipe layer 11 is provided with a through hole connected to the silencer pipe layer 12.

[0031] The silencer 1 adopts a layered design, and the supporting inner tube layer 11 makes the entire silencer tube have sufficient strength; the supporting inner tube layer 11 is provided with a through hole connected to the silencer tube layer 12, and the silencer tube layer 12 can effectively absorb the noise of the pipeline fluid through the through hole; the soundproof tube layer 13 further isolates the noise in the pipe from leaking to the outside. The structure of the entire silencer is simple, and can effectively reduce the noise of the fluid in the pipeline.

[0032] Among them, the silencer assembly 2 includes two baffles 21 arranged in the silencer 1 pipe, one end of each baffle 21 is connected to the inner wall of the supporting inner tube layer 11, and a certain gap is maintained between the other end and the inner wall of the supporting inner tube layer 11. The two baffles 21 divide the pipe of the silencer 1 into an "S"-shaped loop, and the space between the two baffles 21 is filled with a sound-absorbing material layer 22.

[0033] When the air flow flows in the pipe of the muffler 1, the two baffles 21 separate the pipe of the muffler 1 into an "S"-shaped loop, thereby extending the flow path of the fluid and further increasing the distance over which the sound waves are consumed; the sound-absorbing material layer 22 between the two baffles 21 can effectively absorb the noise of the fluid flowing through the sound-absorbing material layer 22.

[0034] The dust removal assembly 3 includes a detachable part 31, a circular hole 32 having a diameter larger than the diameter of the left side pipe of the muffler 1 is provided on the front surface of the detachable part 31, and three equidistantly arranged rectangular grooves 33 are provided on the upper side of the detachable part 31. A filter plate 34 is slidably provided inside each rectangular groove 33, and a mounting frame 35 is fixedly connected to the upper side of each filter plate 34, and a handle 36 is fixedly provided on the middle part of the upper side of each mounting frame 35.

[0035] The filter plate 34 can be actively installed or removed through the handle 36 and the installation frame 35, and can be flexibly pulled out, easy to operate, and convenient to clean or replace. The filter plate 34 has an activated carbon mesh inside, which can improve the filtering and dust removal effect.

[0036] The sealing assembly 4 includes a sealing groove 41 and a sealing strip 42 . The left end surface of the muffler 1 is provided with an annular sealing groove 41 . The right end surface of the detachable part 31 is fixedly connected with an annular sealing strip 42 . The sealing groove 41 and the sealing strip 42 are plugged into each other.

[0037] The sealing groove 41 is plugged into the sealing strip 42 , so that the detachable part 31 can be initially fixed on the left end surface of the muffler 1 , and the sealing effect of the muffler 1 is improved, which is beneficial to improving the silencing effect.

[0038] The fixing assembly 5 includes a connecting block 51, an electric telescopic rod 52 and an arc-shaped fixing plate 53. The four corners of the right end surface of the detachable part 31 are fixedly connected with the connecting block 51. The inner side of the connecting block 51 is a 45° inclined surface. The electric telescopic rod 52 is fixedly connected to the 45° inclined surface. The output end of the electric telescopic rod 52 is fixedly connected to the arc-shaped fixing plate 53, and the arc-shaped fixing plate 53 is in contact with the outer arc surface of the muffler 1.

[0039] After the sealing groove 41 is plugged into the sealing strip 42 , the electric telescopic rod 52 is controlled to extend so that the arc-shaped fixing plate 53 is in close contact with the outer arc surface of the muffler 1 , so that the detachable part 31 can be fixed to the muffler 1 , which is beneficial to improve the stability of the muffler.

[0040] The connecting member 6 comprises a flange 61 and positioning holes 62 . The flange 61 is fixedly connected to the outer arc surface of the right end of the muffler 1 , and the left surface of the flange 61 is provided with evenly distributed positioning holes 62 .

[0041] The arrangement of the flange 61 and the positioning hole 62 can fix the connection between the muffler 1 and the fan.

[0042] The utility model provides a fan inlet pipe silencer with the following working principles: the silencer 1 adopts a layered design, and the supporting inner pipe layer 11 makes the whole silencer pipe have sufficient strength; the supporting inner pipe layer 11 is provided with a through hole connected with the silencer pipe layer 12, and the silencer pipe layer 12 can effectively absorb the noise of the pipeline fluid through the through hole; the sound insulation pipe layer 13 further isolates the noise in the pipe from leaking to the outside, and the structure of the whole silencer is simple, which can effectively reduce the noise of the fluid in the pipeline. When the airflow flows in the pipe of the silencer 1, the two baffles 21 separate the pipe of the silencer 1 into an "S" shaped loop, thereby extending the flow path of the fluid and further increasing the distance that the sound waves are consumed; the sound absorbing material layer 22 between the two baffles 21 can effectively absorb the sound flowing through the sound absorbing material layer 22 The noise of the fluid can be actively installed or removed through the handle 36 and the installation frame 35, and can be flexibly pulled out, easy to operate, and convenient to clean or replace. The inside of the filter plate 34 is an activated carbon net, which can improve the filtering and dust removal effect. The sealing groove 41 and the sealing strip 42 are plugged together, and the detachable part 31 can be initially fixed on the left end face of the muffler 1, and the sealing effect of the muffler 1 is improved, which is beneficial to improving the silencing effect. After the sealing groove 41 and the sealing strip 42 are plugged together, the electric telescopic rod 52 is controlled to extend so that the arc-shaped fixing plate 53 is in close contact with the outer arc surface of the muffler 1, and the detachable part 31 can be fixed to the muffler 1, which is beneficial to improving the stability of silencing. The setting of the flange 61 and the positioning hole 62 can fix the muffler 1 at the connection with the fan.

[0043] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fan inlet pipe muffler, characterized in that: including a silencer (1); The silencer (1) is provided with an internal silencer component (2), the left end of the silencer (1) is provided with a dust removal component (3), a sealing component (4) is provided between the silencer (1) and the dust removal component (3), the dust removal component (3) is fixed to the outside of the left end of the silencer (1) via a fixing component (5), and the right end of the silencer (1) is provided with a connecting piece (6); The dust removal assembly (3) comprises a detachable part (31), the front surface of the detachable part (31) is provided with a circular hole (32) having a diameter greater than the diameter of the left side pipe of the muffler (1), the upper side of the detachable part (31) is provided with three rectangular grooves (33) arranged at equal intervals, a filter plate (34) is slidably arranged inside each of the rectangular grooves (33), the upper side of each of the filter plates (34) is fixedly connected to a mounting frame (35), and a handle (36) is fixedly arranged in the middle of the upper side of each of the mounting frames (35); The sealing assembly (4) comprises a sealing groove (41) and a sealing strip (42); an annular sealing groove (41) is provided on the left end surface of the muffler (1); an annular sealing strip (42) is fixedly connected to the right end surface of the detachable part (31); the sealing groove (41) and the sealing strip (42) are plugged together; The fixing assembly (5) comprises a connecting block (51), an electric telescopic rod (52) and an arc-shaped fixing plate (53); the four corners of the right end surface of the detachable component (31) are fixedly connected to the connecting block (51); the inner side of the connecting block (51) is a 45° inclined surface; the 45° inclined surface is fixedly connected to the electric telescopic rod (52); the output end of the electric telescopic rod (52) is fixedly connected to the arc-shaped fixing plate (53); and the arc-shaped fixing plate (53) is in contact with the outer arc surface of the muffler (1); The silencer (1) comprises a supporting inner tube layer (11), a sound-absorbing tube layer (12) and a sound-isolating tube layer (13) which are arranged in sequence from the inside to the outside, and the supporting inner tube layer (11) is provided with a through hole communicating with the sound-absorbing tube layer (12).

2. A fan inlet pipe muffler according to claim 1, characterized in that: The muffler assembly (2) comprises two baffles (21) arranged in the muffler (1) pipe, one end of each baffle (21) being connected to the inner wall of the supporting inner pipe layer (11), and the other end maintaining a gap with the inner wall of the supporting inner pipe layer (11), the two baffles (21) dividing the pipe of the muffler (1) into an "S"-shaped loop, and a sound-absorbing material layer (22) being filled between the two baffles (21).

3. A fan inlet pipe muffler according to claim 1, characterized in that: The connecting member (6) comprises a flange (61) and positioning holes (62); the flange (61) is fixedly connected to the outer arc surface of the right end of the muffler (1); and the left surface of the flange (61) is provided with evenly distributed positioning holes (62).

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