CN210860253U

CN210860253U - Silencer

Info

Publication number: CN210860253U
Application number: CN201921805300.1U
Authority: CN
Inventors: 赵密升; 赵林; 张勇
Original assignee: Guangdong Mitela Electrical Technology Appliance Co ltd
Current assignee: Guangdong Mitela Electrical Technology Appliance Co ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-06-26
Anticipated expiration: 2029-10-25

Abstract

The utility model discloses a muffler includes a hush section of thick bamboo and No. two hush sections of thick bamboo, a hush section of thick bamboo and No. two hush sections of thick bamboo are for closing connection and removable fraction structure soon, an air inlet and a gas vent have been seted up to the both sides wall of a barrel, an air inlet has set gradually No. two baffles and a baffle that are parallel to each other to a gas vent, a barrel is inside to form a backward flow chamber, No. two backward flow chambeies and No. two backward flow chambeies in proper order. The utility model discloses in, be provided with No. two baffles and a baffle through setting up in a horn body inside for a horn body is inside to form the chamber of different space degree of depth, can make gas get into the chamber that a horn body inside received the different degree of depth and the hindrance between the baffle like this, can reach the produced noise of reduction air current like this, and the practicality is strong.

Description

Silencer

Technical Field

The utility model relates to a muffler technical field, concretely relates to muffler.

Background

The silencer is a device for preventing sound from spreading and allowing airflow to pass through, and is an important measure for eliminating aerodynamic noise, and is often installed on aerodynamic equipment, such as air blowers, air compressors, boiler exhaust ports, generators, water pumps and other devices with high noise at exhaust ports, or noise reduction devices in air inlet and exhaust systems.

The traditional silencer can only eliminate the noise generated by the airflow pulsation of the refrigerant at a certain frequency point, and has the advantages of large occupied space, poor silencing effect at various frequency points, inconvenient disassembly and assembly and high manufacturing cost.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problem, the utility model aims to provide a silencer, which is characterized in that a first reflux cavity, a second reflux cavity and a second reflux cavity are sequentially formed inside a first horn body by arranging a second baffle and a first baffle which are parallel to each other in the first horn body, so that gas can enter the first horn body and is blocked by the cavities with different depths and the baffles, and the noise generated by airflow can be reduced; the first silencing hole and the second silencing hole are uniformly formed in the inner part of the first backflow cavity and the outer wall of the second backflow cavity of the air inlet pipe, and the silencing holes are formed in the outer walls of the air inlet pipe and the exhaust pipe, so that the air flow in the first cylinder can be further silenced; no. two air inlets and No. two gas vents have been seted up through the both sides wall of No. two barrels, wherein No. two air inlets close with an air vent soon and are connected, be fixed with the air inlet section of thick bamboo in No. two air inlets inside, the parallelly connected UNICOM of air inlet section of thick bamboo has second hush pipe and the first hush pipe that extends to No. two gas vents, be fixed with second expansion room and two first expansion rooms of establishing ties with second hush pipe and first hush pipe in the inside central point department of No. two barrels, can make a hush pipe combustion gas flow pass through the air inlet section of thick bamboo and get into the inside triplex that is divided into of No. two hush pipes like this, when the gas of every subsection gets into the expansion room in the air inlet section of hush pipe, can make the air current to different frequency points in the broad.

The purpose of the utility model can be realized by the following technical scheme:

a silencer comprises a first silencing barrel and a second silencing barrel, wherein the first silencing barrel and the second silencing barrel are of detachable structures, the first silencing barrel comprises a barrel body and a first air inlet and a first air outlet which are formed in the central positions of two side walls of the barrel body, a second partition plate and a first partition plate which are parallel to each other are sequentially arranged in the barrel body from the first air inlet to the first air outlet, a first backflow cavity is formed in the area between the second partition plate and the first air inlet, a third backflow cavity is formed in the area between the first partition plate and the first air outlet, a second backflow cavity is formed in the area between the first partition plate and the second partition plate, an air inlet pipe which extends into the second backflow cavity is fixedly connected in the air inlet, a first silencing hole is uniformly formed in the outer wall of the air inlet pipe in the first backflow cavity, and a second silencing hole is uniformly formed in the outer wall of the air inlet pipe in the second backflow cavity, two exhaust pipes which are symmetrical relative to the axis of an air inlet pipe and penetrate through the first partition plate to extend into the first exhaust port are fixed in the second backflow cavity, and three silencing holes are formed in the outer wall of the two exhaust pipes in the second backflow cavity;

the second silencing tube comprises a second tube body and a second air inlet and a second air outlet which are formed in the center positions of the two side walls of the second tube body, the second air inlet is connected with the first air outlet in a screwing mode, an air inlet tube is fixedly arranged inside the second air inlet, a second silencing tube extending to the second air outlet is fixedly arranged at the center position inside the second tube body of the air inlet tube, two first silencing tubes which are symmetrical and communicated with the second silencing tube are fixedly arranged inside the second tube body, a second expansion chamber is connected in series with the middle of each second silencing tube, and a first expansion chamber is connected in series with the middle of each first silencing tube.

Further, the method comprises the following steps: the inside soundproof cotton that fills of No. two cylinder bodies has, and a large amount of soundproof cotton of inside packing of No. two cylinder bodies can make noise cancelling effect better.

Further, the method comprises the following steps: the radius of the first silencing hole, the second silencing hole and the third silencing hole is 1.5mm, so that the first silencing hole, the second silencing hole and the third silencing hole which are arranged on the air inlet pipe and the two exhaust pipes can achieve the best effect.

Further, the method comprises the following steps: the length of the air inlet pipe in the second backflow cavity is equal to twice of the length of the exhaust pipe in the second backflow cavity, so that a good noise elimination effect can be obtained in the second backflow cavity within a wide frequency range.

Further, the method comprises the following steps: two backflow ports are symmetrically formed in the surface of the second partition plate relative to the center of the second partition plate, so that the offset range of the gas in the first backflow cavity and the gas in the second backflow cavity is larger, and the noise elimination effect is further enhanced.

Further, the method comprises the following steps: the air inlet cylinder is connected with the two first silencing pipes and the two second silencing pipes in parallel, so that a large channel is divided into a plurality of small parallel branch channels, and an expansion chamber is arranged on each small channel, so that a large silencing quantity can be obtained in a wide frequency range.

The utility model has the advantages that:

1. the air inlet and the air outlet are arranged at the central positions of two side walls of the first cylinder body, the second clapboard and the first clapboard which are parallel to each other are sequentially arranged in the first cylinder body from the first air inlet to the first air outlet, the first backflow cavity is formed in the area between the second clapboard and the first air inlet in the first cylinder body, the third backflow cavity is formed in the area between the first clapboard and the first air outlet, the second backflow cavity is formed in the area between the first clapboard and the second clapboard, so that air can enter the first cylinder body and is blocked by cavities with different depths and partition walls, the noise generated by airflow can be reduced, the air inlet pipe which extends into the second backflow cavity is fixedly connected in the first air inlet, and the air inlet pipe is provided with a first silencing hole and a second silencing hole uniformly on the inner part of the first backflow cavity and the outer wall of the second backflow cavity, through be provided with the noise elimination hole at intake pipe and blast pipe outer wall, can make the further amortization of the inside air current of barrel like this.

2. No. two air inlets and No. two gas vents have been seted up through the both sides wall central point department of No. two barrels, No. two air inlets and a gas vent spiral-closure are connected, No. two air inlets inside is fixed with the section of thick bamboo that admits air, the section of thick bamboo that admits air parallelly connected UNICOM has second hush pipe and the first hush pipe that extends to No. two gas vents, No. two inside central point departments of barrel are fixed with the second expansion room of establishing ties with the second hush pipe, No. two inside central point departments of barrel are fixed with two first expansion rooms of establishing ties with two first hush pipes, can make a hush pipe combustion gas flow through the section of admitting air inside being divided into the triplex of No. two hush pipes like this, when the gas of every subsection gets into the expansion room in the amortization, can make the air current of broad frequency range to different frequency points carry out.

Drawings

The present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of the muffler of the present invention;

FIG. 2 is a cross-sectional view of the muffler of the present invention;

FIG. 3 is a schematic view of the internal structure of the silencer of the present invention;

FIG. 4 is a schematic view of the internal structure of the first silencing pot of the present invention;

fig. 5 is a schematic view of the internal structure of the second silencing pot of the present invention.

In the figure: 100. a first silencing pot; 101. a first cylinder body; 102. an air inlet pipe; 1021. a first silencing hole; 1022. a second silencing hole; 103. a first reflux cavity; 104. a second reflux cavity; 105. a first separator plate; 106. a third reflux cavity; 107. an exhaust pipe; 1071. a third silencing hole; 108. a second separator plate; 1081. a return port; 109. a first air inlet; 110. a first exhaust port; 200. a second silencing barrel; 201. a second cylinder body; 202. an air inlet cylinder; 203. a first silencer duct; 2031. a first expansion chamber; 204. a second muffler pipe; 2041. a second expansion chamber; 205. a second air inlet; 206. and a second exhaust port.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, a muffler includes a first muffler 100 and a second muffler 200, the first muffler 100 and the second muffler 200 are detachable, the first muffler 100 includes a first cylinder 101 and a first air inlet 109 and a first air outlet 110 formed at the center of two sidewalls of the first cylinder, a second partition 108 and a first partition 105 parallel to each other are sequentially disposed from the first air inlet 109 to the first air outlet 110 in the first cylinder 101, a first backflow cavity 103 is formed between the second partition 108 and the first air inlet 109, a third backflow cavity 106 is formed between the first partition 105 and the first air outlet 110, a second backflow cavity 104 is formed between the first partition 105 and the second partition 108, an air inlet pipe 102 extending into the second backflow cavity 104 is fixedly connected to the interior of the first air inlet 109, the air inlet pipe 102 is uniformly formed with a first muffler 1021 on the outer wall of the interior of the first backflow cavity 103, the air inlet pipe 102 is uniformly provided with a second silencing hole 1022 on the outer wall inside the second reflux cavity 104, two exhaust pipes 107 which are symmetrical relative to the axis of the air inlet pipe 102 and penetrate through the first partition plate 105 to extend into the first exhaust port 110 are fixed inside the second reflux cavity 104, and the two exhaust pipes 107 are provided with a third silencing hole 1071 on the outer wall inside the second reflux cavity 104;

the second silencing tube 200 comprises a second tube body 201 and a second air inlet 205 and a second air outlet 206 which are formed in the center positions of two side walls of the second tube body 201, the second air inlet 205 is connected with the first air outlet 110 in a screwing mode, an air inlet tube 202 is fixed inside the second air inlet 205, a second silencing tube 204 extending to the second air outlet 206 is fixed in the center position of the inside of the second tube body 201 of the air inlet tube 202, two first silencing tubes 203 which are symmetrical with respect to the second silencing tube 204 and communicated with the second silencing tube are fixed inside the second tube body 201, a second expansion chamber 2041 is connected in series with the middle of the second silencing tube 204, and a first expansion chamber 2301 is connected in series with the middle of the first silencing tube 203.

The inside soundproof cotton that is filled at No. two barrel 201, the radius of filling a large amount of soundproof cotton in No. two barrel while a bloop 1021, No. two bloops 1022 and No. three bloops 1071 is 1.5mm and the pitch-row is 2mm, can make like this that a bloop, No. two bloops and No. three bloops effect that sets up reach the best on intake pipe and two blast pipes.

The length of the air inlet pipe 102 in the second return cavity 104 is equal to twice the length of the air outlet pipe 107 in the second return cavity 104, so that a good sound attenuation effect can be obtained in the second return cavity within a wide frequency range.

The surface of the second partition plate 108 is symmetrically provided with two backflow ports 1081 about the center thereof, so that the offset range of the gas in the first backflow cavity and the gas in the second backflow cavity is larger, the noise elimination effect is further enhanced, the air inlet cylinder 202, the two first noise elimination pipes 203 and the second noise elimination pipes 204 are arranged in parallel, a large channel is divided into a plurality of small parallel channels, and an expansion chamber is arranged on each small channel, so that the requirement of larger noise elimination amount can be met in a wider frequency range.

The working principle is as follows: when in use, a worker firstly takes out the first silencing barrel 100 and the second silencing barrel 200, puts the first silencing barrel 100 and the second silencing barrel 200 on a horizontal position, then fixedly connects the first air inlet 113 on the first silencing barrel 100 with an air outlet of a blower or an air compressor and other machines needing silencing treatment, then arranges the air inlet pipe 102 and the air outlet pipe 107 with different lengths in the first barrel 101, simultaneously arranges a first silencing hole 1021, a second silencing hole 1022 and a third silencing hole 1071 on the outer walls of the air inlet pipe 102 and the air outlet pipe 107, arranges the first clapboard 105 and the second clapboard 110 which are parallel to each other in the first barrel 101, leads noise to enter the first barrel 101 through the air inlet pipe 102, firstly carries out backflow elimination in the first backflow cavity 103 to eliminate silencing, then redundant gas enters the second backflow cavity 104, when the airflow passes through the small hole 1022, the frequency spectrum of jet noise moves to high frequency or ultrahigh frequency, the audible sound component in a frequency spectrum is obviously reduced, so that interference and damage to people are reduced, an air inlet cylinder 202 is fixed inside a second air inlet 205, the air inlet cylinder 202 is connected with two first silencing pipes 203 and a second silencing pipe 204 in parallel, two first expansion chambers 2031 and two second expansion chambers 2041 are connected in series at the central positions of the two first silencing pipes 203 and the second silencing pipe 204, so that the air is dispersed into the two first silencing pipes 203 and the second silencing pipe 204 through the air inlet cylinder 202, and sound waves can be reflected or interfered through combination of various different ducts, cavities and chambers, so that the sound energy radiated outwards by a silencer is reduced.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only, and various modifications, additions and substitutions as described for the specific embodiments described herein may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.

Claims

1. A silencer is characterized by comprising a first silencing barrel (100) and a second silencing barrel (200), wherein the first silencing barrel (100) and the second silencing barrel (200) are of detachable structures, the first silencing barrel (100) comprises a barrel body (101) and a first air inlet (109) and a first air outlet (110) which are formed in the center positions of two side walls of the barrel body, a second partition plate (108) and a first partition plate (105) which are parallel to each other are sequentially arranged in the barrel body (101) from the first air inlet (109) to the first air outlet (110), a first backflow cavity (103) is formed in the area between the second partition plate (108) and the first air inlet (109), a third backflow cavity (106) is formed in the area between the first partition plate (105) and the first air outlet (110), and a second backflow cavity (104) is formed in the area between the first backflow partition plate (105) and the second partition plate (108), the first air inlet (109) is fixedly connected with an air inlet pipe (102) extending into a second backflow cavity (104), the outer wall of the air inlet pipe (102) inside the first backflow cavity (103) is uniformly provided with a first silencing hole (1021), the outer wall of the air inlet pipe (102) inside the second backflow cavity (104) is uniformly provided with a second silencing hole (1022), two exhaust pipes (107) which are symmetrical relative to the axis of the air inlet pipe (102) and penetrate through a first partition plate (105) to extend into a first exhaust port (110) are fixed inside the second backflow cavity (104), and the outer wall of the two exhaust pipes (107) inside the second backflow cavity (104) is provided with a third silencing hole (1071);

the second silencing tube (200) comprises a second tube body (201) and a second air inlet (205) and a second air outlet (206) which are formed in the center positions of two side walls of the second tube body, the second air inlet (205) is connected with the first air outlet (110) in a screwing mode, an air inlet tube (202) is fixed inside the second air inlet (205), a second silencing tube (204) extending to the second air outlet (206) is fixed in the center position inside the second tube body (201) of the air inlet tube (202), two first silencing tubes (203) which are symmetrical and communicated with the second silencing tube (204) are fixed inside the second tube body (201), a second expansion chamber (2041) is formed in the middle of the second silencing tube (204) in series connection, and a first expansion chamber (2301) is formed in the middle of the first silencing tube (203) in series connection.

2. A silencer according to claim 1, characterized in that the second cylinder (201) is filled with soundproof cotton.

3. A silencer according to claim 1, characterized in that the radii of the first (1021), second (1022) and third (1071) silencer holes are 1.5 mm.

4. A silencer according to claim 1, characterized in that the length of the inlet pipe (102) inside the second return chamber (104) is equal to twice the length of the outlet pipe (107) inside the second return chamber (104).

5. A silencer according to claim 1, characterized in that the surface of the second partition (108) is provided with two return openings (1081) symmetrically about its center.

6. A silencer according to claim 1, characterized in that the inlet pipe (202) is arranged in parallel with two first (203) and second (204) silencer pipes.