CN211742641U

CN211742641U - Sheet type silencer

Info

Publication number: CN211742641U
Application number: CN202020211794.7U
Authority: CN
Inventors: 刘国龙
Original assignee: Beijing Baite United Technology Co ltd
Current assignee: Beijing Baite United Technology Co ltd
Priority date: 2020-02-26
Filing date: 2020-02-26
Publication date: 2020-10-23
Anticipated expiration: 2030-02-26

Abstract

The utility model discloses a sheet type silencer, which relates to the technical field of silencers, and comprises a silencer shell and a plurality of silencing sheets, wherein the silencer shell is hollow inside and is provided with openings at two ends, the silencing sheets are vertically arranged inside the silencer shell at intervals, channel steel is connected at the upper end and the lower end of each silencing sheet in a sliding manner, one end of each channel steel, which is far away from each silencing sheet, is fixedly connected with the inner wall of the silencer shell, each silencing sheet comprises a rectangular shell, two side walls of each rectangular shell are perforated plates, partition plates are arranged at intervals from top to bottom inside the rectangular shell, a plurality of accommodating cavities are formed between the rectangular shell and the partition plates, and sound absorbing materials are arranged in the accommodating cavities; the utility model discloses in the inside baffle that sets up of amortization piece, weaken the condition of sinking the deformation because of acoustic absorbent gravity arouses, improved noise elimination effect and life.

Description

Sheet type silencer

Technical Field

The utility model relates to a silencer technical field specifically is a piece formula silencer.

Background

A muffler is an acoustic device that allows airflow to pass through while reducing noise, and a plate muffler is the most well-established and widely used muffler. In the prior art, the silencing sheet is usually fixed inside the silencer by welding or riveting, so that the silencing sheet is inconvenient to disassemble, overhaul and replace, and the silencer is usually replaced integrally, which wastes resources and cost; and the sound absorption material is usually filled in the noise elimination sheet to achieve the purpose of resistive noise elimination, and when the sound absorption sheet is placed for a long time, the sound absorption material sinks along with the action of self gravity, and particularly, the sound absorption material positioned at the lower part in the noise elimination sheet is extruded and deformed, so that the sound absorption material in the noise elimination sheet is unevenly distributed, and the noise elimination effect is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a piece formula silencer.

The utility model aims at realizing through the following technical scheme: a sheet type silencer comprises a silencer shell 1 and a plurality of silencing sheets 2, wherein the silencer shell 1 is hollow, two ends of the silencer shell are open, the silencing sheets 2 are vertically arranged in the silencer shell 1 at intervals, the upper end and the lower end of each silencing sheet 2 are connected with channel steel 3 in a sliding mode, and one end of the channel steel 3 far away from the silencing sheet 2 is fixedly connected with the inner wall of the silencer shell 1, the noise reduction sheet 2 comprises a rectangular shell 201, the rectangular shell 201 is hollow inside and is provided with an opening at one end, the side of the rectangular shell 201 is bolted with an end cover 5, two side walls of the rectangular shell 201 are perforated plates 202, a plurality of partition plates 203 are horizontally arranged in the rectangular shell 201 from top to bottom at intervals, a plurality of accommodating cavities 204 are formed between the rectangular shell 201 and the plurality of partition plates 203, and sound absorption materials 205 are arranged in the accommodating cavities 204.

In a preferred embodiment, a plurality of fixed pulleys 4 are arranged at intervals at the lower end of the silencing sheet 2, and the silencing sheet 2 is slidably connected with the channel steel 3 at the bottom of the silencing sheet by placing the fixed pulleys 4 in the channel steel 3 at the bottom of the silencing sheet; the top end of the silencing sheet 2 is arranged in the channel steel 3 at the top of the silencing sheet and is in sliding connection with the channel steel 3 at the top of the silencing sheet.

In an optimized embodiment, the channel steel 3 is far away from a first limiting block 6 fixedly connected with one end of the end cover 5, the channel steel 3 is close to one end of the end cover 5, a second limiting block 7 can be detachably connected with one end of the end cover 5, one end of the second limiting block 7 is connected with the channel steel 3 through bolts, and the other end of the second limiting block is connected with the end cover 5 through bolts.

In a preferred embodiment, the perforated plate 202 is provided with a plurality of through holes having a hole diameter of not less than 3mm and not more than 5mm, and the perforation rate is 20 to 25%.

In a preferred embodiment, the sound absorbing material 205 is centrifugal glass wool, and the sound absorbing material 205 is disposed in the accommodating cavity 204 by disposing a non-woven fabric to wrap the sound absorbing material.

In a preferred embodiment, the perforated plate 202 is provided with a plurality of micro-holes having a hole diameter of not more than 1mm, and the perforation rate is 1 to 5%.

In a preferred embodiment, the sound absorbing material 205 is a corrosion resistant metallic soft wire cloth.

The utility model has the advantages that:

the utility model has the advantages that the silencing sheet is arranged inside the silencer shell in a sliding connection manner, when the silencer is disassembled or installed, the silencing sheet only needs to be pulled out or pushed in a sliding manner, the disassembly, the overhaul and the renewal are convenient, the working efficiency is improved, and the cost is saved;

the utility model discloses in the inside baffle that sets up of amortization piece, weaken the condition of sinking the deformation because of acoustic absorbent gravity arouses, improved noise elimination effect and life.

Drawings

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

Fig. 1 is a schematic structural diagram of a chip muffler according to an embodiment of the present invention;

fig. 2 is a schematic sectional view of a-a of a plate muffler according to an embodiment of the present invention.

In the figure:

1. a muffler housing; 2. a sound-deadening sheet; 201. a rectangular housing; 202. a perforated plate; 203. a partition plate; 204. an accommodating chamber; 205. a sound absorbing material; 3. channel steel; 4. a fixed pulley; 5. an end cap; 6. a first stopper; 7. and a second limiting block.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The invention will be further described with reference to the drawings and specific examples.

The first embodiment is as follows:

as shown in fig. 1-2, a sheet type muffler provided by an embodiment of the present invention includes a muffler shell 1 and a plurality of muffling sheets 2, the muffler shell 1 is hollow and has openings at two ends, the muffling sheets 2 are vertically disposed inside the muffler shell 1 at intervals, the upper and lower ends of the muffling sheets 2 are slidably connected to channel steel 3, one end of the channel steel 3 away from the muffling sheet 2 is fixedly connected to the inner wall of the muffler shell 1, and the channel steel 3 is fixedly connected to the inner wall of the muffling sheet 2 by welding or other methods; the noise reduction sheet 2 comprises a rectangular shell 201, the rectangular shell 201 is hollow, one end of the rectangular shell 201 is open, an end cover 5 is connected to the opening side of the rectangular shell 201 through a bolt, the end cover is arranged on the opening side of the rectangular shell 201 through a bolt connection mode, the prior art is well known by the technical personnel in the field, the details are omitted, and the bolt connection mode is adopted to facilitate the disassembly and the installation of the end cover; perforated plates 202 are arranged on two side walls of the rectangular shell 201, a plurality of partition plates 203 are horizontally arranged in the rectangular shell 201 from top to bottom at intervals, a plurality of accommodating cavities 204 are formed between the rectangular shell 201 and the partition plates 203, and sound absorption materials 205 are arranged in the accommodating cavities 204;

in the embodiment of the utility model, when the silencing sheet 2 is disassembled, overhauled and replaced, the silencing sheet 2 is only required to be pulled out or pushed in a sliding way, compared with the welding or riveting way in the prior art, the silencing sheet is convenient to overhaul and replace, the working efficiency is improved, and the cost is saved; meanwhile, when the sound absorbing material 205 is replaced, the sound absorbing material 205 can be replaced by only disassembling the end cover connected by the bolt; besides, the utility model discloses in the inside baffle 203 that sets up of amortization piece 2, weaken the condition of sinking the deformation that arouses because of sound absorbing material 205 gravity itself, be favorable to improving noise cancelling effect and life.

In a specific embodiment, a plurality of fixed pulleys 4 are arranged at intervals at the lower end of the silencing sheet 2 along the length direction of the silencing sheet, and the silencing sheet 2 is in sliding connection with a channel steel 3 at the bottom of the silencing sheet by arranging the fixed pulleys 4 in the channel steel 3 at the bottom of the silencing sheet; the top end of the silencing sheet 2 is arranged in the channel steel 3 at the top of the silencing sheet and is in sliding connection with the channel steel 3 at the top of the silencing sheet; the utility model discloses set up fixed pulley 4 in the lower extreme of amortization piece 2, further convenient to detach or installation amortization piece 2.

In a specific embodiment, one end of the channel steel 3, which is far away from the end cover 5, is fixedly connected with a first limiting block 6, and the fixed connection mode can adopt welding or other fixed connection modes and is used for limiting when the silencing sheet 2 is pushed into the silencer shell 1; channel-section steel 3 can be dismantled near the one end of end cover 5 and be connected with second stopper 7, and the one end and the 3 bolted connection of channel-section steel of second stopper 7, and the other end and 5 bolted connection of end cover are with piece 2 propulsion silencer casing 1 back, install second stopper 7, play limiting displacement for fixed piece 2 that disappears.

In a specific embodiment, the perforated plate 202 is provided with a plurality of through holes with the aperture not less than 3mm and not more than 5mm, and the perforation rate is 20-25%;

the sound absorption material 205 is centrifugal glass wool, and the sound absorption material 205 is wrapped in the accommodating cavity 204 by arranging non-woven fabrics;

in the embodiment of the present invention, the perforated plate 202 may be a stainless steel plate or other corrosion-resistant metal plate, which is not limited herein; the non-woven fabrics have dampproofing, ventilative, pliable and tough, matter light, do not support combustion, characteristics such as easy decomposition, nontoxic nonirritant, low price, recycling, the embodiment of the utility model provides an in, place in with non-woven fabrics parcel centrifugation glass cotton and hold chamber 204, protect the centrifugation glass cotton not receive the air current direct scour, be convenient for deposit and change simultaneously.

Example two:

in the second chip muffler provided by the embodiment of the present invention, the perforated plate 202 is provided with a plurality of micro holes with a hole diameter not greater than 1mm, and the perforation rate is 1-5%; the sound absorbing material 205 is corrosion-resistant metal soft wire cloth; in addition, other structures in the embodiment of the present invention are consistent with the above embodiment, and are not described herein again; in the embodiment of the present invention, the perforated plate 202 may be made of stainless steel plate or other corrosion-resistant metal plate, and is not limited here, the aperture of the perforated plate 202 is a micro-hole not greater than 1mm, preferably 0.6mm, and the perforation rate is preferably 3%, and the frequency spectrum performance of the muffler can be controlled by selecting different perforation rates, so that the muffler can obtain a good muffling effect in a required frequency range; meanwhile, the sound absorption material 205 is corrosion-resistant metal soft wire cloth, and the noise reduction and elimination effects are further achieved by utilizing the resistive sound absorption principle of the sound absorption material.

Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a piece formula silencer, includes silencer casing (1) and a plurality of noise elimination piece (2), the inside cavity and the both ends opening of silencer casing (1) are a plurality of the vertical interval of noise elimination piece (2) is located the inside of silencer casing (1), its characterized in that: a plurality of equal sliding connection in upper and lower both ends of noise suppression piece (2) has channel-section steel (3), just keep away from channel-section steel (3) the one end of noise suppression piece (2) with the inner wall fixed connection of silencer casing (1), noise suppression piece (2) are including rectangle shell (201), the inside cavity of rectangle shell (201) and one end opening, the opening side bolted connection of rectangle shell (201) has end cover (5), the both sides wall of rectangle shell (201) is perforated plate (202), the inside top-down horizontal interval of rectangle shell (201) is equipped with a plurality of baffles (203), rectangle shell (201) and a plurality of form a plurality of chambeies (204) that hold between baffle (203), it is equipped with sound absorbing material (205) in chamber (204) to hold.

2. The chip muffler according to claim 1, wherein: a plurality of fixed pulleys (4) are arranged at the lower end of the silencing sheet (2) at intervals, and the silencing sheet (2) is in sliding connection with the channel steel (3) at the bottom of the silencing sheet by placing the fixed pulleys (4) in the channel steel (3) at the bottom of the silencing sheet; the top end of the silencing sheet (2) is arranged in the channel steel (3) at the top of the silencing sheet and is in sliding connection with the channel steel (3) at the top of the silencing sheet.

3. The chip muffler according to claim 2, wherein: keep away from channel-section steel (3) the first stopper (6) of one end fixedly connected with of end cover (5), channel-section steel (3) are close to the one end of end cover (5) can be dismantled and be connected with second stopper (7), just the one end of second stopper (7) with channel-section steel (3) bolted connection, the other end with end cover (5) bolted connection.

4. A chip muffler according to claim 3, wherein: the perforated plate (202) is provided with a plurality of through holes with the aperture not smaller than 3mm and not larger than 5mm, and the perforation rate is 20-25%.

5. The chip muffler according to claim 4, wherein: the sound absorption material (205) is centrifugal glass wool, and the sound absorption material (205) is arranged in the containing cavity (204) through arranging a non-woven fabric package.

6. A chip muffler according to claim 3, wherein: the perforated plate (202) is provided with a plurality of micropores with the aperture not larger than 1mm, and the perforation rate is 1-5%.

7. The chip muffler according to claim 6, wherein: the sound absorption material (205) is corrosion-resistant metal soft wire cloth.