CN-122006347-A - Underground air purification is with second grade whirlwind dust collecting equipment

CN122006347ACN 122006347 ACN122006347 ACN 122006347ACN-122006347-A

Abstract

The invention discloses a secondary cyclone dust removal device for underground air purification, which belongs to the technical field of coal mine dust removal devices and comprises a vertically arranged primary cyclone dust remover, wherein the core improvement points are as follows: the upper part of the primary cyclone dust collector is communicated with a secondary cyclone dust collector integrator which is vertically arranged, and the secondary cyclone dust collector integrator comprises a plurality of secondary cyclone dust collectors which are distributed in a circumferential array, dust collection cylinders which are communicated with the lower parts of all the secondary cyclone dust collectors, and a dust collection cylinder which is communicated with the upper parts of all the secondary cyclone dust collectors. The dust removing equipment adopts the two-stage cyclone dust collectors to work in parallel, and compared with the traditional one-stage cyclone dust collector, the dust discharging concentration is effectively reduced, and as the two-stage cyclone dust collectors are provided with a plurality of dust collectors, the dust removing equipment is more efficient in capturing fine particles, saves space due to integrated design, and is suitable for underground narrow environments.

Inventors

WANG CHENGCHENG
Zhang Timeng
WANG YADONG
LI LILI
LI MINGHUI
Kong Linan
LI HAIZHOU
FENG RAN
ZHOU PENGYUN
LI XINMENG
ZHAO HONGFU
Han Jizi
GUO BINGCHI

Assignees

兖矿能源集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260410

Claims (9)

1. The secondary cyclone dust collection device for underground air purification comprises vertically arranged primary cyclone dust collectors and is characterized in that the vertically arranged secondary cyclone dust collection integrator is communicated above the primary cyclone dust collectors and comprises a plurality of circumferentially arrayed secondary cyclone dust collectors, dust collection cylinders communicated below all the secondary cyclone dust collectors and a dust collection cylinder communicated above all the secondary cyclone dust collectors.
2. The apparatus according to claim 1, wherein the primary cyclone dust collector comprises a primary cylindrical body, a primary conical body is communicated below the primary cylindrical body, a primary dust discharge port is formed in the bottom of the primary conical body, a primary air inlet pipe is communicated tangentially to one side of the primary cylindrical body, and a primary air outlet pipe which is coaxially arranged in the primary cylindrical body and penetrates upward to the outside of the primary cylindrical body is arranged in the primary cylindrical body.
3. The apparatus according to claim 2, wherein the dust collecting cylinder comprises a dust collecting cylinder body which is disposed above the primary cylinder body and coaxially fitted over the primary exhaust pipe, and a dust collecting cylinder cover which can be opened or closed is installed above the dust collecting cylinder body.
4. The secondary cyclone dust removing apparatus for underground air purification according to claim 2, wherein the secondary cyclone dust remover comprises a secondary cylindrical drum, a secondary conical drum is communicated below the secondary cylindrical drum, wherein a secondary dust discharge port communicated with the dust collecting drum is arranged at the bottom of the secondary conical drum, secondary air inlet pipes are tangentially communicated at one side of the secondary cylindrical drum, all the secondary air inlet pipes are communicated with a primary air outlet pipe, a secondary air outlet pipe coaxially arranged with the secondary air inlet pipe and penetrating upwards to the outside of the secondary cylindrical drum is arranged in the secondary cylindrical drum, and all the secondary air outlet pipes are finally communicated with the dust collecting drum.
5. The apparatus according to claim 2, wherein the air collecting duct includes an air collecting duct body located above the primary exhaust duct but not in communication with the primary exhaust duct, and an air guide nozzle for exhausting air upward is in communication with the air collecting duct body.
6. The secondary cyclone dust removing apparatus for downhole air cleaning according to claim 2, wherein the primary cylindrical drum is coaxially provided with a flexible reducing mechanism therein before entering the secondary cyclone dust collector.
7. The device according to claim 6, wherein the flexible reducing mechanism comprises a reducing air bag coaxially attached to the inner wall of the primary cylindrical body, wherein the reducing air bag is made of flexible material, the reducing air bag is connected with a gas pipe penetrating the primary cylindrical body and the dust collecting cylinder, and the outer wall of the dust collecting cylinder is provided with a pneumatic pump communicated with the gas pipe.
8. The apparatus of claim 7, wherein the flexible reducing mechanism further comprises two annular barriers mounted in parallel to the inner wall of the primary cylindrical body, wherein the annular barriers are made of a rigid material, and the entire reducing air bag is mounted between the two annular barriers.
9. The apparatus according to claim 7, wherein a protective tube is further provided in the dust collection tube to completely wrap the gas pipe inside the dust collection tube.

Description

Underground air purification is with second grade whirlwind dust collecting equipment Technical Field The invention relates to the technical field of coal mine dust removal equipment, in particular to secondary cyclone dust removal equipment for underground air purification. Background In industrial scenes such as coal mine excavation, tunnel construction and the like, a large amount of suspended particles such as coal dust, rock dust and the like can be generated in the operation process, and if the suspended particles are not purified in time, the suspended particles not only can harm the health of workers, but also can cause safety accidents such as dust explosion and the like. The dust collecting equipment commonly used at present mainly comprises a cyclone dust collector, dust is separated through centrifugal force, a filter screen is not required to be replaced regularly, and the maintenance is simple and convenient. However, the prior cyclone dust collector still has the following problems in practical application: The dust removal effect is single, that is, the dust removal effect is mostly of a primary cyclone structure, dust is separated by depending on the length of a single cone body and the rotation strength of airflow, the collection efficiency of tiny particles is low, and the exhaust gas still contains a lot of dust easily. The adaptability is poor, the traditional equipment can not dynamically adjust the internal airflow channel according to the air inflow, and the dust removal stability is insufficient when the air inflow concentration or the flow velocity fluctuates. Disclosure of Invention The first technical problem to be solved by the invention is to provide the secondary cyclone dust removing equipment for underground air purification, which is of a secondary cyclone composite dust removing structure, and the overall purification efficiency is improved through grading treatment so as to solve the problem that the traditional cyclone dust removing equipment has a single dust removing effect. In order to achieve the above purpose, the present invention provides the following technical solutions: The secondary cyclone dust collector for underground air purification comprises a primary cyclone dust collector which is vertically arranged, and the core improvement point is that a secondary cyclone dust collector which is vertically arranged is communicated above the primary cyclone dust collector, and the secondary cyclone dust collector comprises a plurality of secondary cyclone dust collectors which are circumferentially distributed in an array manner, dust collection cylinders which are communicated below all the secondary cyclone dust collectors, and a dust collection cylinder which is communicated above all the secondary cyclone dust collectors. By adopting the scheme, the dust removing equipment adopts the two-stage cyclone dust collectors to work in parallel, and compared with the traditional one-stage cyclone dust collector, the dust emission concentration is effectively reduced. As a preferred embodiment of the secondary cyclone dust removing device for underground air purification, the primary cyclone dust remover comprises a primary cylindrical barrel, a primary conical barrel is communicated below the primary cylindrical barrel, a primary dust discharging port is arranged at the bottom of the primary conical barrel, a primary air inlet pipe is communicated tangentially at one side of the primary cylindrical barrel, and a primary air outlet pipe which is coaxially arranged in the primary cylindrical barrel and upwards penetrates through the primary cylindrical barrel to the outside is arranged in the primary cylindrical barrel. When the primary cyclone dust collector works, the tangential primary air inlet pipe makes the airflow spirally descend, large particles are separated by utilizing centrifugal force, the large particles form external cyclone airflow through tangential air inlet, dust is thrown to the cylinder wall and settled, and the internal cyclone airflow carries a small amount of dust to be discharged upwards from the primary exhaust pipe, so that primary purification of gas is finally realized. The dust collecting cylinder comprises a dust collecting cylinder body which is positioned above a first-stage cylindrical cylinder body and coaxially sleeved on a first-stage exhaust pipe, a dust collecting cylinder cover which can be opened or closed is arranged above the dust collecting cylinder body, the dust collecting cylinder mainly collects dust of a second-stage dust discharge port in a concentrated mode, the sealing design of the dust collecting cylinder is used for preventing secondary dust emission, and a cover body can be opened to facilitate periodic dust cleaning and avoid blockage. As a preferred implementation mode of the secondary cyclone dust removing equipment for underground air purification, the secondary cyclone dust remover comprises a secondary cylindr