CN-122006356-A - Wet dust removal system for semi-coal rock roadway tunneling working face

CN122006356ACN 122006356 ACN122006356 ACN 122006356ACN-122006356-A

Abstract

The invention discloses a wet dust removal system for a semi-coal rock tunneling working face, which relates to the technical field of coal mining and comprises a ventilation mechanism, a filtering mechanism, a wet flushing mechanism and a side blocking mechanism, wherein the ventilation mechanism comprises a dust removal pipeline, two ends of the dust removal pipeline are respectively provided with an air inlet end and an air outlet end, the filtering mechanism comprises a filter plate, the filter plate is fixedly arranged in the dust removal pipeline, the bottom end of the filter plate is inclined towards the air inlet end, the wet flushing mechanism is used for being communicated with a submerged high-pressure water supply system and flushing the filter plate, and the side blocking mechanism is positioned on one side of the filter plate, which is opposite to the air inlet end. This wet dust pelletizing system of semi-coal stone drift entry face through setting up the structure such as turning over board, arc board, effectively prolongs the dwell time of rivers at the filter plate surface, guarantees that impurity washout is clean, reduces the water waste simultaneously, and the slope setting of cooperation filter plate, makes the sewage after the washing carry impurity to flow down smoothly along the filter plate surface, is convenient for follow-up collection and handling, guarantees dust pelletizing system's availability factor.

Inventors

ZHAN PING
ZHANG SHILIN
MA HAOHAO
NIU JINMING
ZHANG YIGONG
Sun Shibiao
ZHAO YIFAN
CHENG ZHI
KANG LI
ZHOU CHAO
JIA LIANJUN

Assignees

山西潞安集团司马煤业有限公司

Dates

Publication Date: 20260512
Application Date: 20260331

Claims (10)

1. The wet dust removal system for the semi-coal rock roadway tunneling working face is characterized by comprising a ventilation mechanism, a filtering mechanism, a wet flushing mechanism and a side blocking mechanism; the ventilation mechanism comprises a dust removing pipeline (1) arranged on the heading machine, two ends of the dust removing pipeline (1) are respectively provided with an air inlet end (101) and an air outlet end (102), forward wind power enters the dust removing pipeline (1) from the air inlet end (101), and is discharged from the air outlet end (102) after air is supplied to the dust removing pipeline (1); The filtering mechanism comprises a filter plate (2), wherein a filter hole (201) is formed in the filter plate (2), the filter plate (2) is fixedly arranged in the dust removing pipeline (1), and the bottom end of the filter plate (2) is inclined towards the air inlet end (101); The wet flushing mechanism is used for being communicated with the submerged high-pressure water supply system and flushing the filter plate (2); the side blocking mechanism is positioned on one side of the filter plate (2) opposite to the air inlet end (101) and comprises a turning plate (3), a guide strip (6) and an arc plate (7), wherein the bottom end of the turning plate (3) is rotatably arranged in the dust removing pipeline (1), the guide strip (6) is fixedly arranged at the top end of the filter plate (2), the arc plate (7) is slidably arranged on the guide strip (6), and both the guide strip (6) and the arc plate (7) are arc-shaped; During back blowing, the turning plate (3) turns towards the direction of the filter plate (2) to be in contact with the arc plate (7), the arc plate (7) is tightly pressed on the side part of the filter plate (2), a compression chamber is formed among the turning plate (3), the arc plate (7) and the inner wall of the dust removal pipeline (1), and gas in the compression chamber is turned by the turning plate (3) and is extruded out from the filter hole (201) at high speed; When the turning plate (3) turns and resets towards the direction far away from the filter plate (2), the arc plate (7) is driven to be separated from the side part of the filter plate (2), and the compression chamber is relieved; When flushing, the turning plate (3) is attached to the filter plate (2) to form a shielding and guiding structure, and water flow flushes impurities which are reversely blown and ejected from the filter plate (2).
2. The wet dust removal system for the semi-coal rock tunneling working face according to claim 1, wherein a square groove (702) is formed in one side, close to the filter plate (2), of the arc plate (7), a spring (14) is arranged in the square groove (702), one end of the spring (14) is fixedly connected to the filter plate (2), and the other end of the spring (14) is fixedly connected to the inner wall of the square groove (702).
3. The wet dust collection system for the semi-coal rock roadway heading face is characterized in that one side, close to a turning plate (3), of an arc plate (7) is fixedly connected with a plurality of anti-slip strips (8), and the plurality of anti-slip strips (8) are uniformly distributed.
4. The wet dust collection system for the semi-coal rock tunneling working face according to claim 1, wherein a partition plate (10) is arranged above the filter plate (2), a fixed shaft (9) is rotatably connected to the top end of the partition plate (10), the fixed shaft (9) is fixedly arranged on the inner wall of the dust collection pipeline (1), and the partition plate (10) and the filter plate (2) form a continuous flow guide structure.
5. The wet dust removal system for the semi-coal rock roadway heading face is characterized in that one end, far away from a filter plate (2), of a guide strip (6) is rotatably connected with a transmission frame (11), and a first torsion spring (13) is arranged at the rotary connection position; The transmission frame (11) is L-shaped, one end of the transmission frame (11) is in butt fit with the partition plate (10), and the other end of the transmission frame (11) is in butt fit with the top end of the turning plate (3).
6. The wet dust collection system for the semi-coal rock roadway heading face is characterized in that the length and width dimensions of the turning plate (3) are matched with the length and width dimensions of the filter plates (2).
7. The wet dust collection system for the semi-coal rock roadway heading face is characterized in that a bending section (202) is arranged at the bottom end of the filter plate (2), the inclination angle of the bending section (202) is smaller than that of the filter plate (2), and a sliding channel (17) is formed between the bending section (202) and the bottom end of the turning plate (3).
8. The wet dust collection system for the semi-coal rock tunneling working face is characterized in that a reflux chamber (18) is arranged at the bottom of the dust collection pipeline (1), a reflux groove (23) is formed in the top end of the reflux chamber (18), the reflux groove (23) is correspondingly distributed with the bending section (202) and the bottom end of the turning plate (3), and the reflux chamber (18) is communicated with the inner cavity of the dust collection pipeline (1) through the reflux groove (23); A bottom plate (19) is arranged in the reflux groove (23), one end, close to the turning plate (3), of the bottom plate (19) is rotationally connected to the inner wall of the reflux groove (23), and a second torsion spring (20) is arranged at the rotational connection position; The bottom end fixed mounting who turns over board (3) has clamp plate (5), and clamp plate (5) are located landing passageway (17), and clamp plate (5) are close to filter plate (2) setting, and the bottom plate (19) butt cooperation of clamp plate (5).
9. The wet dust collection system for the semi-coal rock tunneling working face is characterized in that the bottom end of the turning plate (3) is rotatably connected to the inner wall of the dust collection pipeline (1), a motor (16) is fixedly arranged on the outer wall of the dust collection pipeline (1), a rotating shaft of the motor (16) is in transmission connection with the rotating joint of the bottom end of the turning plate (3), and the turning plate (3) is driven to rotate when the motor (16) is started.
10. The wet dust removal system for a semi-coal rock tunneling working face according to claim 1, wherein the wet flushing mechanism is used for conveying a mixed solution of a liquid green efficient wetting-condensing type composite dust suppression material and dustproof water, and the liquid green efficient wetting-condensing type composite dust suppression material comprises an anionic surfactant, a nonionic surfactant and a CMCH-g-AMPS graft copolymer polymer coagulant.

Description

Wet dust removal system for semi-coal rock roadway tunneling working face Technical Field The invention relates to the technical field of coal mining, in particular to a wet dust removal system for a semi-coal rock roadway tunneling working face. Background The semi-coal rock tunnel refers to a mine tunnel with rock stratum accounting for 1/5 (not containing) to 4/5 (not containing) of the area of a tunneling working surface in the tunnel section, and is generally used for a scene that a roof or a bedrock is required to be lifted to meet the height requirement of the tunnel when a thin coal seam is tunneling, and the semi-coal rock tunnel tunneling working surface is an important dust generation place, so that dust removal of the place is very important. The dust-collecting system for the coal mine tunneling working face is disclosed in the patent with the name of CN201710400171.7, the dust-collecting system for the coal mine tunneling working face is used for cleaning the dust-collecting filter screen grating by controlling a water spraying device and a water spraying pump through a control device, dust attached to the dust-collecting filter screen grating and dust-collecting adhesive adhered to the dust are washed together, but in the actual use process, water flow easily directly passes through the filter screen grating, the residence time on the filter screen grating is shorter, the water flow cannot fully contact impurities, the washing effect is general, meanwhile, water resource waste is caused, the dust-collecting efficiency is influenced, and the water flow also easily washes the impurities to the other side of the filter screen grating when directly passing through meshes on the filter screen grating, so that the other end of a dust-collecting chamber is polluted by air or a pipeline is blocked. Therefore, it is necessary to provide a wet dust removal system for a semi-coal rock roadway driving working face to solve the above problems. Disclosure of Invention The invention aims to provide a wet dust removal system for a semi-coal rock roadway tunneling working face, which aims to solve the problems that water flow easily passes through a filter screen grid directly, the residence time on the filter screen grid is short, the water flow cannot fully contact impurities, the flushing effect is general, water resource waste is caused, and the dust fall efficiency is influenced. In order to achieve the aim, the invention provides the technical scheme that the wet dust removal system for the semi-coal rock roadway tunneling working face comprises a ventilation mechanism, a filtering mechanism, a wet flushing mechanism and a side blocking mechanism; the ventilation mechanism comprises a dust removing pipeline arranged on the heading machine, two ends of the dust removing pipeline are respectively provided with an air inlet end and an air outlet end, forward wind power enters the dust removing pipeline from the air inlet end, and the dust removing pipeline is discharged from the air outlet end after air is supplied; The filter mechanism comprises a filter plate, wherein a filter hole is formed in the filter plate, the filter plate is fixedly arranged in the dust removing pipeline, and the bottom end of the filter plate is inclined towards the air inlet end direction; the wet flushing mechanism is used for being communicated with the submerged high-pressure water supply system and flushing the filter plates; The side blocking mechanism is positioned on one side of the filter plate, which is opposite to the air inlet end, and comprises a turning plate, a guide strip and an arc plate, wherein the bottom end of the turning plate is rotatably arranged in the dust removing pipeline, the guide strip is fixedly arranged at the top end of the filter plate, the arc plate is arranged on the guide strip in a sliding manner, and the guide strip and the arc plate are arc-shaped; During back blowing, the turning plate turns towards the direction of the filter plate to contact with the arc plate, the arc plate is pressed on the side part of the filter plate, a compression chamber is formed among the turning plate, the arc plate and the inner wall of the dust removing pipeline, and gas in the compression chamber is pressed out from the filter hole at high speed under the turning of the turning plate; When the turning plate turns and resets towards the direction far away from the filter plate, the arc plate is driven to be separated from the side part of the filter plate, and the compression chamber is relieved; When flushing, the turning plate is attached to the filter plate to form a shielding and guiding structure, and water flow blows out the impurities which are blown out from the filter plate. Preferably, a square groove is formed in one side, close to the filter plate, of the arc plate, a spring is arranged in the square groove, one end of the spring is fixedly connected to the filter plate, and the other end of the