Silencing device for exhaust pipe at outlet of fan

Abstract

The utility model relates to the technical field of fan outlet exhaust pipes, and provides a fan outlet exhaust pipe silencer which comprises an air pipe body and first flange plates, and the first flange plates are arranged at the two ends of the air pipe body. The positioning structure is arranged, the first flange plate is moved, one end of the first flange plate is moved to the bottom end of the second flange plate, the multiple sets of positioning blocks at the top end of the first flange plate can be moved into the positioning groove through the guide blocks, and therefore rotation and deviation of flanges are avoided, and the sealing performance and stability of the flange connecting position are guaranteed; the bottom end of the first flange plate is fixedly connected with the top end of the air pipe body, the top end of the second flange plate is fixedly connected with the bottom end of an exhaust pipe needing to be connected, and the first flange plate and the second flange plate are mutually fixed through fixing bolts. And therefore, the applicability of the silencer for the exhaust pipe at the outlet of the fan in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fan outlet exhaust pipes, in particular to a fan outlet exhaust pipe silencing device. Background Art

[0002] Exhaust pipe refers to a device used to remove exhaust gas, noise and heat generated after combustion in internal combustion engine power equipment such as automobiles and motorcycles. In order to reduce exhaust noise during the operation of the fan outlet of the exhaust gas treatment equipment and exhaust equipment, a fan outlet exhaust pipe silencer is required;

[0003] To this end, the patent with publication number CN218522713U discloses a noise reduction device for automobile exhaust pipe, including a muffler body, a first baffle fixedly connected to one side of the muffler body, a second baffle fixedly connected to one side of the muffler body, a first through hole opened on one side of the first baffle, a second through hole opened on one side of the second baffle, three muffler plates fixedly connected to one side of the muffler body, and three third through holes opened on one side of the three muffler plates. The advantages of the utility model are: the intake pipe is fixed by fixing the first baffle on one side of the muffler body and opening a first through hole on one side thereof, the exhaust pipe is fixed by fixing the second baffle on the muffler body and opening a second through hole on one side thereof, and the exhaust pipe is evenly discharged through the entire cavity of the exhaust hole by opening a plurality of exhaust holes in the intake pipe;

[0004] Although the above-mentioned automobile exhaust pipe silencing and noise reduction device prevents the transmission of noise, the device cannot be assembled quickly during operation, making it less applicable during use. Utility Model Content

[0005] The utility model aims to provide a fan outlet exhaust pipe silencer device, which is used to solve the defect that the existing fan outlet exhaust pipe silencer device is inconvenient to locate.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a fan outlet exhaust pipe silencer device, comprising a duct body and a first flange;

[0007] Both ends of the air duct body are provided with a first flange, and a second flange is provided on a side of the first flange away from the air duct body, and fixing bolts are evenly penetrated inside the first flange and the second flange;

[0008] The bottom of the second flange is evenly provided with a positioning structure, the positioning structure includes a positioning groove, a positioning block and a guide block, the positioning groove is evenly provided on the top of the second flange, the inside of the positioning groove is provided with a guide block, and the bottom of the guide block is fixed with a positioning block;

[0009] A fixed structure is arranged inside the air duct body, and the fixed structure includes a fixed seat, a placement block, a placement slot, a mesh plate, sound-absorbing cotton and a handle. The mesh plate is arranged inside the air duct body, and sound-absorbing cotton is arranged inside the mesh plate. A fixed seat is fixed at the top of the mesh plate, and handles are fixed on both sides of the top of the fixed seat. The placement slots are evenly arranged on the top of the air duct body, and placement blocks are arranged inside the placement slots.

[0010] When using the device, by providing a positioning structure, the function of facilitating positioning of the device is achieved, thereby improving the applicability of the fan outlet exhaust pipe silencer when in use; by providing a fixing structure, the function of facilitating noise reduction and disassembly of the device is achieved, thereby improving the applicability of the fan outlet exhaust pipe silencer when in use.

[0011] Preferably, the bottom ends of the positioning blocks extend to the outside of the second flange and are fixedly connected to the top of the first flange, and the positioning blocks are evenly spaced at the top of the first flange. Move the first flange so that one end of the first flange moves to the bottom of the second flange, and the multiple groups of positioning blocks at the top of the first flange will move to the inside of the positioning groove through the guide blocks, thereby avoiding the rotation and offset of the flange, ensuring the sealing and stability of the flange connection, the bottom end of the first flange is fixedly connected to the top of the air duct body, the top of the second flange is fixedly connected to the bottom of the exhaust pipe to be connected, and the first flange and the second flange are fixed to each other by fixing bolts.

[0012] Preferably, the positioning grooves are distributed at equal intervals on the bottom of the second flange, and the front cross-section of the guide block is trapezoidal in design.

[0013] Preferably, the handles are symmetrically distributed on the top of the fixing seat, and four groups of placement blocks are provided.

[0014] Preferably, the top end of the placement block extends to the outside of the placement groove and is fixedly connected to the bottom end of the fixing seat, and the placement block and the placement groove constitute a sliding structure.

[0015] Preferably, the first flange and the second flange are fixedly connected by fixing bolts, and one end of the first flange is fixedly connected to both ends of the air duct body.

[0016] The utility model provides a fan outlet exhaust pipe silencer, which has the following advantages:

[0017] By providing a positioning structure, the first flange is moved so that one end of the first flange is moved to the bottom end of the second flange, and the multiple groups of positioning blocks at the top end of the first flange are moved to the inside of the positioning groove through the guide block, thereby avoiding the rotation and deviation of the flange, ensuring the sealing and stability of the flange connection, the bottom end of the first flange is fixedly connected to the top end of the air duct body, the top end of the second flange is fixedly connected to the bottom end of the exhaust pipe to be connected, and the first flange and the second flange are fixed to each other by fixing bolts, realizing the function of facilitating positioning of the device, thereby improving the applicability of the fan outlet exhaust pipe silencer when in use;

[0018] By providing a fixed structure, when the gas flows through the interior of the air duct body, it comes into contact with the silencer cotton in the interlayer, and its energy will be absorbed by the silencer cotton and converted into heat energy, thereby greatly reducing the noise generated in the air duct body. The silencer cotton is fixed by the mesh plate. When the silencer cotton needs to be replaced, the fixing seat is pulled, and the fixing seat will drive the placement block to move out of the placement slot. At the same time, the fixing seat will drive the silencer cotton to move to the outside of the air duct body through the mesh plate, realizing the function of facilitating noise reduction and disassembly of the device, thereby improving the applicability of the fan outlet exhaust pipe silencer when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0021] Figure 3 It is a side cross-sectional structural schematic diagram of the utility model;

[0022] Figure 4 It is a schematic diagram of the top cross-sectional structure of the utility model;

[0023] Figure 5 For the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0024] Explanation of the reference numerals in the figure: 1. Duct body; 2. First flange; 3. Second flange; 4. Positioning structure; 401. Positioning groove; 402. Positioning block; 403. Guide block; 5. Fixing structure; 501. Fixing seat; 502. Placement block; 503. Placement groove; 504. Mesh plate; 505. Silencing cotton; 506. Handle; 6. Fixing bolt. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-Figure 5 The utility model provides a fan outlet exhaust pipe silencer device, comprising a duct body 1 and a first flange 2, both ends of the duct body 1 are provided with the first flange 2, the first flange 2 is provided with a second flange 3 on the side away from the duct body 1, the first flange 2 and the second flange 3 are evenly penetrated with fixing bolts 6, the bottom of the second flange 3 is evenly provided with a positioning structure 4, the positioning structure 4 includes a positioning groove 401, a positioning block 402 and a guide block 403, the positioning groove 401 is evenly arranged on the top of the second flange 3, and the positioning groove 401 is evenly arranged on the top of the second flange 3. 01 are all provided with guide blocks 403 inside, and positioning blocks 402 are fixed at the bottom ends of the guide blocks 403. The bottom ends of the positioning blocks 402 extend to the outside of the second flange 3 and are fixedly connected to the top of the first flange 2. The positioning blocks 402 are evenly spaced at the top of the first flange 2, and the positioning grooves 401 are evenly spaced at the bottom of the second flange 3. The main cross-section of the guide blocks 403 is trapezoidal in design. The first flange 2 and the second flange 3 are fixedly connected by fixing bolts 6, and one end of the first flange 2 is fixedly connected to both ends of the air duct body 1.

[0027] Reference Figure 1 and Figure 5 As shown, the first flange 2 is moved so that one end of the first flange 2 is moved to the bottom end of the second flange 3, and the multiple groups of positioning blocks 402 at the top of the first flange 2 are moved to the inside of the positioning groove 401 through the guide block 403, thereby avoiding the rotation and deviation of the flange, ensuring the sealing and stability of the flange connection, the bottom end of the first flange 2 is fixedly connected to the top end of the air duct body 1, and the top end of the second flange 3 is fixedly connected to the bottom end of the exhaust pipe to be connected, and the first flange 2 and the second flange 3 are fixed to each other by fixing bolts 6.

[0028] A fixed structure 5 is arranged inside the air duct body 1, and the fixed structure 5 includes a fixed seat 501, a placement block 502, a placement groove 503, a mesh plate 504, sound-absorbing cotton 505 and a handle 506. The mesh plate 504 is arranged inside the air duct body 1, and sound-absorbing cotton 505 is arranged inside the mesh plate 504. The top of the mesh plate 504 is fixed with a fixed seat 501, and handles 506 are fixed on both sides of the top of the fixed seat 501. The placement grooves 503 are evenly arranged on the top of the air duct body 1, and the placement blocks 502 are arranged inside the placement grooves 503. The handles 506 are symmetrically distributed on the top of the fixed seat 501. Four groups of placement blocks 502 are arranged, and the top of the placement block 502 extends to the outside of the placement groove 503 and is fixedly connected to the bottom of the fixed seat 501. The placement block 502 and the placement groove 503 constitute a sliding structure.

[0029] Reference Figure 1 and Figure 3 As shown, when the gas flows through the interior of the air duct body 1, it comes into contact with the sound-absorbing cotton 505 in the interlayer, and its energy will be absorbed by the sound-absorbing cotton 505 and converted into heat energy, thereby greatly reducing the noise generated in the air duct body 1. The sound-absorbing cotton 505 is fixed by the mesh plate 504. When the sound-absorbing cotton 505 needs to be replaced, the fixing seat 501 is pulled, and the fixing seat 501 will drive the placement block 502 to move out of the placement groove 503. At the same time, the fixing seat 501 will drive the sound-absorbing cotton 505 to move to the outside of the air duct body 1 through the mesh plate 504.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fan outlet exhaust pipe silencer device, comprising a duct body (1) and a first flange (2); Features: Both ends of the air duct body (1) are provided with a first flange (2), a side of the first flange (2) away from the air duct body (1) is provided with a second flange (3), and fixing bolts (6) are evenly penetrated inside the first flange (2) and the second flange (3); The bottom of the second flange (3) is evenly provided with a positioning structure (4), the positioning structure (4) comprising a positioning groove (401), a positioning block (402) and a guide block (403), the positioning groove (401) is evenly provided on the top of the second flange (3), the inside of the positioning groove (401) is provided with a guide block (403), and the bottom of the guide block (403) is fixed with a positioning block (402); A fixing structure (5) is arranged inside the air duct body (1), and the fixing structure (5) comprises a fixing seat (501), a placement block (502), a placement groove (503), a mesh plate (504), sound-absorbing cotton (505) and a handle (506). The mesh plate (504) is arranged inside the air duct body (1), and sound-absorbing cotton (505) is arranged inside the mesh plate (504). The fixing seat (501) is fixed at the top of the mesh plate (504), and handles (506) are fixed on both sides of the top of the fixing seat (501). The placement grooves (503) are evenly arranged at the top of the air duct body (1), and the placement blocks (502) are arranged inside the placement grooves (503).

2. A fan outlet exhaust pipe silencing device according to claim 1, characterized in that: The bottom ends of the positioning blocks (402) extend to the outside of the second flange (3) and are fixedly connected to the top of the first flange (2), and the positioning blocks (402) are distributed at equal intervals on the top of the first flange (2).

3. A fan outlet exhaust pipe silencing device according to claim 1, characterized in that: The positioning grooves (401) are distributed at equal intervals on the bottom of the second flange (3), and the guide block (403) has a trapezoidal main view cross section.

4. A fan outlet exhaust pipe silencing device according to claim 1, characterized in that: The handles (506) are symmetrically distributed on the top of the fixing seat (501), and the placement blocks (502) are provided in four groups.

5. A fan outlet exhaust pipe silencing device according to claim 1, characterized in that: The top end of the placement block (502) extends to the outside of the placement groove (503) and is fixedly connected to the bottom end of the fixing seat (501), and the placement block (502) and the placement groove (503) form a sliding structure.

6. A fan outlet exhaust pipe silencing device according to claim 1, characterized in that: The first flange (2) and the second flange (3) are fixedly connected via fixing bolts (6), and one end of the first flange (2) is fixedly connected to both ends of the air duct body (1).

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