Disassembly and assembly type exhaust pipeline silencer

Abstract

The utility model discloses a detachable exhaust duct silencer, which relates to the technical field of silencers and comprises a frame plate mechanism, detachable sealing mechanisms are arranged on two sides of the frame plate mechanism, and a silencing resonance mechanism is inserted into the frame plate mechanism. In order to solve the problems that in the prior art, due to the fact that a silencer is prone to being blocked and needs to be replaced and maintained, forked pipes and single connecting pipes are arranged on the two sides of a frame plate mechanism, the airflow speed is reduced, local turbulence noise caused by airflow bias is avoided, a combined noise reduction scheme of source control and tail end treatment is formed, and the noise reduction efficiency is greatly improved by disassembling the corresponding arrangement of a sealing mechanism and a noise elimination resonance mechanism. The two sides of the frame plate mechanism can be opened for maintenance, the micro-perforated cylinder plates form a resonance structure through micro-holes in the plates and cavities formed by separation of the separation insertion plates, the micro-perforated cylinder plates are arranged in a staggered mode, and sound energy is absorbed through resonance of air columns at the small holes.

Description

Technical Field

[0001] This utility model relates to the field of silencer technology, specifically a detachable exhaust duct silencer. Background Technology

[0002] Exhaust ducts are piping systems used to exhaust waste gas, smoke, steam, or harmful gases generated in buildings, equipment, or industrial processes. They are usually connected to exhaust systems and use fans or other equipment to extract waste gas from indoors or equipment and discharge it outdoors or to treatment facilities. Exhaust ducts can be made of various materials, such as metal, plastic, or composite materials. When gas flows in the airflow channels of aerodynamic equipment, it will be mixed with the noise of the equipment or generate wind noise during the flow. When the airflow reaches a certain velocity, it will generate a lot of noise, which will affect the surrounding environment and the normal life of people indoors.

[0003] Exhaust ducts need to be equipped with silencers to reduce noise. However, most existing silencers are welded and fixed, and exhaust ducts accumulate a lot of dust. The internal structure of the silencer is curved and complex, which makes it easy to get clogged and reduce the sound reduction effect. At the same time, the micro-perforated plate built into the silencer consumes sound energy through resonance, so it needs to be replaced and maintained.

[0004] To address the aforementioned issues, a detachable exhaust duct silencer is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a detachable exhaust duct silencer, which solves the problems in the background technology where existing silencers are mostly welded and fixed, exhaust ducts have a lot of dust, the internal structure of the silencer is curved and complex, which makes the silencer easy to get clogged and reduce the sound absorption effect, and the micro-perforated plate built into the silencer consumes sound energy through resonance, requiring replacement and maintenance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a detachable exhaust duct silencer, comprising a frame plate mechanism, wherein a disassembly and sealing mechanism is provided on both sides of the frame plate mechanism, and a sound-absorbing resonance mechanism is inserted into the interior of the frame plate mechanism. The frame plate mechanism comprises a square frame plate, wherein sealing rubber parts are sleeved on both sides of the square frame plate, and the disassembly and sealing mechanism comprises a cover pressed against the corresponding sealing rubber parts. A bifurcated pipe and a single pipe are respectively fixed on both sides of the square frame plate, and the sound-absorbing resonance mechanism comprises a partition plate inserted into the square frame plate. A micro-perforated cylindrical plate is fixedly provided on the partition plate, and three sets of partition plates are provided to isolate the interior of the square frame plate into four cavities.

[0007] Preferably, the square frame plate has socket grooves on both sides for inserting the cover, and the sealing rubber component is embedded on the outside of the socket groove.

[0008] Preferably, the inside of the square frame plate is fixed with side plates for engaging the partition plates.

[0009] Preferably, one end of both the branched pipe and the single pipe is fixed with a conical rubber ring.

[0010] Preferably, the cover is threaded with screws at its four corners, and the cover and the square frame are fixed together by the screws.

[0011] Preferably, a set of micro-perforated cylindrical plates is fixed in the middle of the partition plate on one side of the bifurcation tube, and through holes are opened on both sides.

[0012] Preferably, the single-pipe connector has two sets of partition plates on one side, two sets of micro-perforated cylindrical plates fixed on both sides, and a through hole in the middle.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The present invention provides a detachable exhaust duct silencer, which, through the setting of branch pipes and single pipes on both sides of the frame plate mechanism, with the branch pipes set at the front end of the silencer, divides the airflow of the exhaust duct into two branches. The symmetrical arrangement of the branches makes the flow distribution of each branch uniform, while reducing the airflow velocity and avoiding local turbulence noise caused by airflow deviation, thereby reducing the noise source intensity of the airflow entering the silencer. At the same time, the airflow splitting facilitates the sound energy dissipation and dissipation of the sound energy by the sound-absorbing resonance mechanism inside the silencer, forming a combined noise reduction scheme of "source control + end treatment".

[0015] 2. This utility model provides a detachable exhaust duct silencer. Through the corresponding arrangement of the detachable sealing mechanism and the sound-absorbing resonance mechanism, and the combination of the detachable sealing mechanism with sealing rubber parts, the connection and sealing performance between the frame plate mechanism and the detachable sealing mechanism are improved. Simultaneously, the double-sided arrangement of the detachable sealing mechanism allows the frame plate mechanism to be opened for maintenance from both sides. The partition plate is inserted into the square frame plate, facilitating the cleaning of internal dust. The micro-perforated cylindrical plate utilizes the tiny holes on the plate and the cavity formed by the separation of the partition plate to create a resonance structure. Furthermore, the staggered arrangement of the micro-perforated cylindrical plates absorbs sound energy through the resonance of the air column at the small holes. This solves the problems of existing silencers, which are mostly welded and fixed, resulting in a large amount of dust in the exhaust duct, and the complex and curved internal structure of the silencer, leading to easy blockage and reduced sound absorption. Additionally, the micro-perforated plates inside the silencer consume sound energy through resonance, requiring replacement and maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the disassembled structure of this utility model. Figure 1 ;

[0018] Figure 3 This is a schematic diagram of the disassembled structure of this utility model. Figure 2 ;

[0019] Figure 4 This is a schematic diagram of the corresponding structure of the frame plate mechanism and the sound-absorbing resonance mechanism of this utility model.

[0020] In the diagram: 1. Frame plate mechanism; 11. Square frame plate; 111. Sleeve groove; 112. Sealing rubber component; 113. Side insert plate; 12. Branch pipe; 13. Single pipe; 14. Conical rubber ring; 2. Disassembly sealing mechanism; 21. Cover; 22. Screw; 3. Noise reduction and resonance silencing mechanism; 31. Separator insert plate; 32. Micro-perforated cylindrical plate; 33. Through hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0023] Combination Figure 1 This utility model discloses a detachable exhaust duct silencer, including a frame plate mechanism 1, a disassembly and sealing mechanism 2 on both sides of the frame plate mechanism 1, and a sound-absorbing resonance mechanism 3 inserted inside the frame plate mechanism 1. The frame plate mechanism 1 includes a square frame plate 11, and sealing rubber parts 112 are sleeved on both sides of the square frame plate 11. The disassembly and sealing mechanism 2 includes a cover 21 pressed against the sealing rubber parts 112. A bifurcated pipe 12 and a single pipe 13 are fixed on both sides of the square frame plate 11, respectively. The sound-absorbing resonance mechanism 3 includes a partition plate 31 inserted into the square frame plate 11, and a micro-perforated cylindrical plate 32 is fixed on the partition plate 31. The partition plate 31 is provided in three sets, which isolate the inside of the square frame plate 11 into four cavities.

[0024] Specifically, the square frame plate 11 is equipped with a bifurcation pipe 12 and a single pipe 13 on both sides. The bifurcation pipe 12 is set at the front end of the silencer to divide the airflow of the exhaust pipe into two branches. The symmetrical arrangement of the branches makes the flow distribution of each branch uniform, while reducing the airflow speed and avoiding local turbulence noise caused by airflow deviation. This reduces the noise source intensity of the airflow entering the silencer. At the same time, the airflow splitting facilitates the sound energy dissipation and consumption of the sound energy by the sound-absorbing resonance mechanism 3 inside the silencer, forming a combined noise reduction scheme of "source control + end treatment". The disassembly and sealing mechanism 2, together with the sealing rubber part 112, improves the connection and sealing between the frame plate mechanism 1 and the disassembly and sealing mechanism 2. At the same time, the double-sided arrangement of the disassembly and sealing mechanism 2 allows the frame plate mechanism 1 to be opened and maintained on both sides. The partition plate 31 is inserted into the square frame plate 11 to facilitate cleaning of internal dust. The micro-perforated cylindrical plate 32 uses the small holes on the plate and the cavity formed by the separation of the partition plate 31 to form a resonance structure. The micro-perforated cylindrical plates 32 are staggered and absorb sound energy through the resonance of the air column at the small holes.

[0025] The present invention will be further described below with reference to the embodiments.

[0026] Example 1:

[0027] Combination Figures 2-4 The square frame plate 11 has socket grooves 111 on both sides for inserting the cover 21. The sealing rubber component 112 is embedded on the outside of the socket groove 111. The socket groove 111 and the cover 21 are sleeved together to ensure the flatness of the external structure of the frame plate mechanism 1. At the same time, the cover 21 and the sealing rubber component 112 fit together to ensure the sealing effect.

[0028] Inside the square frame plate 11, side inserts 113 are fixed side by side for engaging the partition insert 31. The side inserts 113 engage the partition insert 31 to form a cavity partition that is easy to disassemble.

[0029] Both the branch pipe 12 and the single pipe 13 have a conical rubber ring 14 fixed at one end. The conical shape of the conical rubber ring 14 makes it easy to connect to exhaust pipes of different sizes.

[0030] The cover 21 has screws 22 threaded connections at its four corners. The cover 21 and the square frame plate 11 are fixed together by the screws 22. The screws 22 are located at the four corners, which provides high stability. When maintaining the frame plate mechanism 1, it is only necessary to select the side that is more convenient to operate and remove one set of four sets of screws 22 corresponding to the cover 21.

[0031] Example 2:

[0032] Combination Figure 4A set of micro-perforated cylindrical plates 32 are fixed in the middle of the partition plate 31 on one side of the bifurcation pipe 12, and through holes 33 are opened on both sides. The bifurcation pipe 12 has two channels, and a set of micro-perforated cylindrical plates 32 need to be fixed in the middle on the partition plate 31 adjacent to it. The two channels of the bifurcation pipe 12 are staggered to improve the sound absorption effect. The through holes 33 realize the airflow connection and prevent the ventilation effect from being affected.

[0033] The single pipe 13 has two sets of partition plates 31 on one side, and two sets of micro-perforated cylindrical plates 32 are fixed on both sides. A through hole 33 is opened in the middle. The single pipe 13 has only one channel. Two sets of micro-perforated cylindrical plates 32 need to be symmetrically fixed on the partition plate 31 adjacent to it. They are staggered with one channel of the single pipe 13 to improve the sound absorption effect. The through hole 33 enables airflow communication and prevents the ventilation effect from being affected.

[0034] The sound-absorbing material that uses the micro-perforated cylindrical plate 32 is called a micro-perforated plate silencer. The micro-perforated cylindrical plates 32 inside are staggered to consume sound energy and have various structures.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable exhaust duct silencer, comprising a frame plate mechanism (1), characterized in that: The frame plate mechanism (1) is provided with a disassembly and sealing mechanism (2) on both sides, and a sound-absorbing resonance mechanism (3) is inserted into the inside of the frame plate mechanism (1); The frame plate mechanism (1) includes a square frame plate (11), and sealing rubber parts (112) are sleeved on both sides of the square frame plate (11). The disassembly and sealing mechanism (2) includes a cover (21) pressed against the corresponding sealing rubber parts (112). A bifurcated pipe (12) and a single pipe (13) are fixed on both sides of the square frame plate (11). The sound-absorbing resonance mechanism (3) includes a partition plate (31) inserted into the square frame plate (11). A micro-perforated cylindrical plate (32) is fixed on the partition plate (31). There are three sets of partition plates (31) to isolate the inside of the square frame plate (11) into four cavities.

2. The detachable exhaust duct silencer according to claim 1, characterized in that: The square frame plate (11) has socket grooves (111) on both sides for inserting the cover (21), and the sealing rubber part (112) is embedded on the outside of the socket groove (111).

3. A detachable exhaust duct silencer according to claim 1, characterized in that: The square frame plate (11) has side inserts (113) fixed side by side inside for snapping into the partition inserts (31).

4. A detachable exhaust duct silencer according to claim 1, characterized in that: A conical rubber ring (14) is fixed to one end of both the branch pipe (12) and the single pipe (13).

5. A detachable exhaust duct silencer according to claim 1, characterized in that: The cover (21) has screws (22) threaded at its four corners, and the cover (21) and the square frame plate (11) are fixed together by the screws (22).

6. A detachable exhaust duct silencer according to claim 1, characterized in that: A set of micro-perforated cylindrical plates (32) are fixed in the middle of the partition plate (31) on one side of the branched tube (12), and through holes (33) are opened on both sides.

7. A detachable exhaust duct silencer according to claim 1, characterized in that: The single pipe (13) has two sets of partition plates (31) on one side, two sets of micro-perforated cylindrical plates (32) fixed on both sides, and a through hole (33) in the middle.

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