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CN-224228955-U - Air outlet barrel capable of reducing noise based on operation of mine fan

CN224228955UCN 224228955 UCN224228955 UCN 224228955UCN-224228955-U

Abstract

The utility model relates to the field of air outlets, in particular to an air outlet cylinder capable of reducing noise based on the operation of a mine fan, which comprises an air outlet cylinder, an air supply cover, an external filter screen, a turnover cover, a fan, external soundproof cotton, an impedance muffler, a first internal double-layer filter screen, a second internal double-layer filter screen and internal soundproof cotton, wherein the air supply cover is turned in a dark way at the right position of the air outlet cylinder, the fan is arranged in the air supply cover, the external filter screen is arranged at the right side of the air supply cover, the outer side wall of the air outlet cylinder is wrapped with external soundproof cotton, the upper end of the air outlet cylinder is provided with a turning cover, the lower end of the turning cover is provided with an impedance muffler, a first built-in double-layer filter screen and a second built-in double-layer filter screen are arranged in the impedance muffler, the outer side of the impedance muffler is wrapped with the built-in soundproof cotton, the built-in soundproof cotton is arranged between the air outlet cylinder and the impedance muffler, the outer side wall of the air outlet cylinder is wrapped with the external soundproof cotton, and noise can be effectively reduced through double-layer soundproof effect.

Inventors

  • Ma Yinyu
  • HAO DINGMOU
  • SHI JISONG
  • SONG JINHONG
  • CHANG ZHANSHENG
  • LI JIANBO

Assignees

  • 赤峰柴胡栏子黄金矿业有限公司

Dates

Publication Date
20260512
Application Date
20250619

Claims (8)

  1. 1. The utility model provides an play dryer that can make an uproar falls based on mine fan operation, a serial communication port, including going out dryer (1), supply air cover (2), external filter screen (3), turn over cover (4), fan (5), external soundproof cotton (6), impedance silencer (7), first built-in double-deck filter screen (8), built-in double-deck filter screen of second (9) and built-in soundproof cotton (10), go out dryer (1) right side position dark commentaries on classics air cover (2), install fan (5) in supply air cover (2), external filter screen (3) are installed on air cover (2) right side, go out dryer (1) lateral wall parcel external soundproof cotton (6), turn over cover (4) are installed to play dryer (1) upper end, install impedance silencer (7) under turn over cover (4), install first built-in double-deck filter screen (8) and built-in double-deck filter screen of second (9) in impedance silencer (7) outside parcel built-in cotton (10).
  2. 2. The air outlet cylinder capable of reducing noise based on operation of a mine fan according to claim 1, wherein a fan (5) is installed on a central shaft of an inner side wall installation support (202) of the air supply cover (2), a fixing plate (201) is installed on the right side wall of the air supply cover (2), the fixing plate (201) and a fixing frame (301) are installed through fixing bolts, and an external filter screen (3) is installed in the fixing frame (301).
  3. 3. The air outlet barrel capable of reducing noise based on operation of a mine fan according to claim 1, wherein the air outlet barrel (1) is provided with a slow air section (101) and an air outlet section (102), a first fixing disc (103) is arranged on the right side wall of the air outlet section (102), the first fixing disc (103) and a second fixing disc (203) are arranged through fixing bolts, and the second fixing disc (203) is arranged on the left side of an air supply cover (2).
  4. 4. The air outlet barrel capable of reducing noise based on operation of a mine fan according to claim 3, wherein a first air baffle (104) and a second air baffle (105) are arranged on the inner side of the air baffle section (101), and an included angle of 30 degrees is formed between the first air baffle (104) and the second air baffle (105) in a staggered mode.
  5. 5. The air outlet barrel capable of reducing noise based on operation of a mine fan according to claim 3, wherein a movable groove (106) is formed in the air outlet barrel (1), a turnover cover (4) can be rotated in the movable groove (106), and a pull plate (401) is arranged at the front end of the turnover cover (4).
  6. 6. The air outlet barrel capable of reducing noise based on operation of the mine fan according to claim 5, wherein a first limiting frame (107) and a second limiting frame (108) are arranged on the inner side wall of the air outlet barrel (1), an impedance muffler (7) is arranged between the first limiting frame (107) and the second limiting frame (108), and a built-in soundproof cotton (10) is arranged between the air outlet barrel (1) and the impedance muffler (7).
  7. 7. The air outlet barrel capable of reducing noise based on operation of a mine fan according to claim 6, wherein a first slot (701) and a second slot (702) are arranged at the upper end of the impedance muffler (7), a first built-in double-layer filter screen (8) can be inserted into the first slot (701), and a second built-in double-layer filter screen (9) can be inserted into the second slot (702).
  8. 8. The air outlet barrel capable of reducing noise based on operation of a mine fan according to claim 7, wherein a porous sound absorption tube (703) is arranged in the center of the inner side of the impedance muffler (7), a first partition plate (704), a second partition plate (705) and a third partition plate (706) are arranged between the inner side wall of the impedance muffler (7) and the outer side wall of the porous sound absorption tube (703), an expansion chamber is arranged between the first partition plate (704) and the second partition plate (705), and an expansion chamber is arranged between the second partition plate (705) and the third partition plate (706).

Description

Air outlet barrel capable of reducing noise based on operation of mine fan Technical Field The utility model relates to the field of air outlets, in particular to an air outlet capable of reducing noise based on operation of a mine fan. Background In the mining production process, the fan is used as key ventilation equipment, plays a vital role in guaranteeing underground air circulation and removing harmful gas, the noise pollution problem generated in the operation process of the fan is increasingly remarkable, chinese patent discloses an air outlet barrel (grant bulletin number CN 222558807U) capable of reducing noise based on the operation of the fan, and the technology has the advantages of lower cost and simpler and more convenient implementation, does not need to carry out large-scale reconstruction on the existing fan and ventilation system, but has poor design sound insulation effect. Therefore, a person skilled in the art provides an air outlet barrel capable of reducing noise based on the operation of a mine fan, so as to solve the problems in the prior art. Disclosure of Invention In order to solve the technical problems, the utility model provides an air outlet barrel capable of reducing noise based on operation of a mine fan, which comprises an air outlet barrel, an air supply hood, an external filter screen, a turnover hood, a fan, external soundproof cotton, an impedance muffler, a first internal double-layer filter screen, a second internal double-layer filter screen and internal soundproof cotton, wherein the air supply hood is turned in a dark manner at the right position of the air outlet barrel, the fan is arranged in the air supply hood, the external filter screen is arranged at the right side of the air supply hood, the external soundproof cotton is wrapped on the outer side wall of the air outlet barrel, the turnover hood is arranged at the upper end of the air outlet barrel, the impedance muffler is arranged below the turnover hood, the first internal double-layer filter screen and the second internal double-layer filter screen are arranged in the impedance muffler, and the internal soundproof cotton is wrapped on the outer side of the impedance muffler. Preferably, a fan is arranged on a central shaft of the bracket, a fixed plate is arranged on the right side wall of the air supply cover, the fixed plate and the fixed frame are arranged through a fixed bolt, and an external filter screen is arranged in the fixed frame; The air outlet cylinder is preferably provided with a slow air section and an air outlet section, a first fixed disc is arranged on the right side wall of the air outlet section, the first fixed disc and a second fixed disc are arranged through a fixed bolt, the second fixed disc is arranged on the left side of an air supply cover, a first slow air plate and a second slow air plate are arranged on the inner side of the slow air section, and an included angle of 30 degrees is formed between the first slow air plate and the second slow air plate in a staggered manner; The air outlet cylinder is internally provided with a movable groove, a turnover cover can be rotated in the movable groove, a pull plate is arranged at the front end of the turnover cover, a first limit frame and a second limit frame are arranged on the inner side wall of the air outlet cylinder, an impedance muffler is arranged between the first limit frame and the second limit frame, and a built-in soundproof cotton is arranged between the air outlet cylinder and the impedance muffler; Preferably, a first slot and a second slot are arranged at the upper end of the impedance muffler, a first built-in double-layer filter screen can be inserted into the first slot, and a second built-in double-layer filter screen can be inserted into the second slot; Preferably, a porous sound absorption pipe is arranged at the center of the inner side of the impedance muffler, a first partition plate, a second partition plate and a third partition plate are arranged between the inner side wall of the impedance muffler and the outer side wall of the porous sound absorption pipe, an expansion chamber is arranged between the first partition plate and the second partition plate, and an expansion chamber is arranged between the second partition plate and the third partition plate. The utility model has the technical effects and advantages that: 1. An expansion chamber is arranged between the first baffle plate and the second baffle plate, an expansion chamber is arranged between the second baffle plate and the third baffle plate, sound waves enter the expansion chamber through a porous sound absorption pipe, and the sound waves transmitted along the pipeline can be effectively reflected towards the direction of a sound source under the refraction effect of the inner wall of the expansion chamber, so that part of sound energy is converted into energy ‌ consumed for overcoming viscous force, and the effect of silencing is achi