Axial-flow type pneumatic dedusting fan

Abstract

The invention relates to an axial-flow type pneumatic dedusting fan, which belongs to a dedusting device for underground coal mines and is suitable for dust extraction of fine dust, coal dust, ash, smoke dust and the like generated during the operation of the underground coal mines. The dedusting fan also comprises a swirl diffuser (1), a stream collector (6), a stream drain cover (7), a high-speed spray nozzle (9) and a drainage opening (10), wherein the flared stream collector (6) is fixed at the most front end of a wind guiding cylinder (2); the stream drain cover (7) is arranged on the back of the stream collector (6) in the wind guiding cylinder (2); a motor (4) is arranged on the back of the stream drain cover (7); the conical stream drain cover (7) is connected with a compressed air inlet; a water inlet is arranged on the upper part of the high-speed spray nozzle (9) which is arranged on the back of a vane wheel (3); the swirl diffuser (1) is arranged on the back end in the wind guiding cylinder (2); and the drainage opening (10) is arranged on the bottom of the wind guiding cylinder (2). The axial-flow type pneumatic dedusting fan has the advantages of reasonable structure, convenient use, safety, reliability, easy maintenance, low cost, stepless speed regulation, overload protection, overload start-up, quick stop and the like.

Description

technical field [0001] The utility model relates to an axial-flow pneumatic dedusting fan, which belongs to a dedusting device used underground in coal mines. Background technique [0002] In coal mines, coal dust, coal dust, dust, smoke and other harmful impurities are generated most in the coal mine excavation, coal mining, anchor shotcrete working face. In order to ensure the safety of the site and the health of the personnel, these impurities need to be removed. The previous practice is Use electric dust removal fan or hydraulic dust removal fan to remove harmful impurities, but these two kinds of equipment have different deficiencies in use. The electric dust removal fan is prone to burn the motor, while the hydraulic dust removal fan will give the field equipment The problem of insufficient pressure, if the hydraulic power source is added, there will be too many equipments on the working face and the space will become narrow, which will bring inconvenience to the const...

AI Technical Summary

Problems solved by technology

[0002] In coal mines, coal dust, coal dust, dust, smoke and other harmful impurities are generated most in the coal mine excavation, coal mining, anchor shotcrete working face. In order to ensure the safety of the site and the health of the personnel, these impurities need to be removed. The previous practice is Use electric dust removal fan or hydraulic dust removal fan to remove harmful impurities, but these two kinds of equipment have different deficiencies in use. The electric dust removal fan is prone to burn the motor, while the hydraulic dust removal fan will give the field equipment Insufficient pressure brings the problem. If the hydraulic power source is added, there will be too many equipments on the working face, which will make the space narrow and bring inconvenience to the construction on site.

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