CN216691151U

CN216691151U - Dust removal system for working face of lower part of raise boring

Info

Publication number: CN216691151U
Application number: CN202123080926.0U
Authority: CN
Inventors: 宋亚新; 荆国业; 杨木林; 卞超; 贺艳军; 周明
Original assignee: Lijiahao Coal Mine Of Guoneng Baotou Energy Co ltd; Beijing China Coal Mine Engineering Co ltd
Current assignee: Lijiahao Coal Mine Of Guoneng Baotou Energy Co ltd; Beijing China Coal Mine Engineering Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-06-07
Anticipated expiration: 2031-12-09

Abstract

The utility model discloses a dust removal system for a working face at the lower part of a raise boring, which comprises a roadway, wherein the top of the roadway is provided with a pipeline, a self-cleaning filter and a water curtain nozzle, a water inlet of the pipeline is connected with a movable host, the self-cleaning filter is arranged at one end, close to the water inlet, of the pipeline, a water curtain spray pipe is communicated with fluid on the pipeline, and the water curtain nozzle is arranged on the water curtain spray pipe; according to the utility model, through arranging the self-cleaning filter, the water flow can be filtered before entering the water curtain nozzle, so that the water curtain nozzle is prevented from being blocked by impurities in the water flow, the impurity content of the sprayed water curtain is lower, more dust can be absorbed, and the dust removal efficiency is improved; and through setting up the self-cleaning filter, the water in the tunnel escape canal can be filtered in the self-cleaning filter by high pressure water pump again through simple processing, and then uses many times, can save the water resource.

Description

Dust removal system for working face of lower part of raise boring

Technical Field

The utility model relates to the technical field of roadway dust removal. In particular to a dust removal system for a working face at the lower part of a raise boring.

Background

The raise-shaft method is a vertical shaft construction mode of tunneling from bottom to top, broken rocks freely fall into a bottom roadway during construction, a large amount of dust can be generated in the rock breaking and falling processes, harm is caused to the environment and staff of the underground roadway, and construction of an underground working face can be affected in severe cases.

At present, an automatic dust removal device in an underground roadway is urgently needed, dust generated by falling of slag stones is effectively filtered in the process of reverse well construction, and the influence on construction of other underground working faces is reduced to the greatest extent.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to provide a dust removal system for the lower working face of the raise boring well, which has an automatic cleaning function.

In order to solve the technical problems, the utility model provides the following technical scheme:

the dust removal system for the working face of the lower part of the raise boring comprises a roadway, wherein the top of the roadway is provided with a pipeline, a self-cleaning filter and a water curtain nozzle, a water inlet of the pipeline is connected with a movable host, the self-cleaning filter is arranged at one end, close to the water inlet, of the pipeline, a water curtain spray pipe is communicated with fluid on the pipeline, and the water curtain nozzle is arranged on the water curtain spray pipe; the water curtain nozzle's play water end orientation the bottom in tunnel sets up, the water curtain nozzle is in form the water curtain on the cross-section in tunnel.

In the dust removal system for the working face at the lower part of the raise boring well, the number of the water curtain spray pipes is three, nine water curtain nozzles are arranged on each three water curtain spray pipes, the distance between every two adjacent water curtain nozzles on the same water curtain spray pipe is 2-5m, the distance between the water curtain nozzles is determined according to the size of the section of a roadway, the larger the section is, the larger the distance between the water curtains is, the thicker water curtain wall can be integrally formed by mutually matching multiple layers of water curtains, and a valve is arranged at one end, close to a water outlet, of the pipeline; the actual distance between the water curtain nozzles is determined by the width of the roadway, and the plurality of water curtain nozzles on the same water curtain spray pipe are distributed at equal intervals and equal angles; the spraying direction of water curtain nozzle comes to and the water curtain nozzle's spraying direction and dust come to contained angle A be 30 degrees-45 degrees, and specific angle can specifically be set for according to the dust velocity of flow, and the dust velocity of flow is big more angle A less, and the dust flows and exerts pressure to spun water smoke for the water smoke trend is drawn close towards the tunnel cross section, thereby ensures that the spraying can form along the closed water curtain of tunnel cross section, thereby makes the dust removal more thorough.

According to the dust removal system for the working face at the lower part of the raise boring well, the controller and the high-pressure water pump are arranged inside the movable main machine, and the water inlet of the pipeline is communicated with the fluid at the water outlet of the high-pressure water pump.

In the dust removal system for the working surface at the lower part of the raise boring well, the self-cleaning filter comprises a filter box, a water inlet pipe, a water outlet pipe and a high-pressure water pipe; the water inlet pipe and the water outlet pipe are respectively and fixedly arranged at two ends of the filter box, a sewage discharge water inlet pipe is fixedly arranged on the water inlet pipe, a sewage discharge water outlet pipe is fixedly arranged at one end, close to the water outlet pipe, of the filter box, and the sewage discharge water inlet pipe and the sewage discharge water outlet pipe are communicated through the high-pressure water pipe fluid; a water inlet control valve is arranged on the water inlet pipe, a water outlet control valve is arranged on the water outlet pipe, and a sewage draining outlet pipe control valve is arranged on the sewage draining outlet pipe; a drain pipe is fixedly arranged at one end of the bottom of the filter box, which is close to the water inlet pipe, and a drain pipe control valve is arranged on the drain pipe; the bottom of the filter box is fixedly provided with a motor, an output shaft of the motor extends into the filter box and is fixedly connected with the side edge of a support ring, the diameter of the support ring is smaller than the inner diameter of the filter box, the support ring is coaxial with the filter box, a coarse strainer is fixedly arranged in the support ring, a strainer sleeve is fixedly arranged at the outer edge of the support ring, the outer diameter of the strainer sleeve is equal to that of the filter box, and the outer wall of the strainer sleeve is in sealing fit with the inner side wall of the filter box; the inside of rose box is close to the position fixed mounting of outlet pipe has thin filter screen, the both sides of thin filter screen all are provided with first pressure differential changer, the both sides of coarse strainer all are provided with second pressure differential changer.

In the dust removal system for the working surface at the lower part of the raise boring well, the water inlet control valve is arranged between the joint of the sewage inlet pipe and the water outlet end of the water inlet pipe; the motor is located the blow off pipe deviates from one side of inlet tube, fine filter screen is located the blowdown outlet pipe deviates from one side of outlet pipe.

According to the dust removal system for the working face at the lower part of the raise boring well, the water inlet control valve, the water outlet control valve, the sewage discharging pipe control valve, the motor, the first pressure difference transmitter and the second pressure difference transmitter are connected with the electric cabinet through signal lines.

The technical scheme of the utility model achieves the following beneficial technical effects:

1. according to the utility model, the self-cleaning filter is arranged, so that the water flow can be filtered before entering the water curtain nozzle, the water curtain nozzle is prevented from being blocked by impurities in the water flow, the impurity content of the sprayed water curtain is lower, more dust can be absorbed, and the dust removal efficiency is improved; and through setting up self-cleaning filter, the water in the tunnel escape canal can be filtered in sending into self-cleaning filter by high pressure water pump once more through handling, and then uses many times, can save the water resource.

2. According to the utility model, the first pressure difference transmitters are arranged on the two sides of the fine filter screen, when enough impurity layers are accumulated on the fine filter screen, the pressure difference on the two sides reaches the preset value of the filter, the electric control box can control the water inlet control valve and the water outlet control valve to be closed, the sewage discharging pipe control valve and the sewage discharging pipe control valve to be opened, clean water enters the filter box through the high-pressure water pipe, the impurity layers on the fine filter screen and the coarse filter screen are washed, sewage and impurities are discharged through the sewage discharging pipe, the filter box can be automatically cleaned, and the filter box is prevented from being blocked; through installing the coarse strainer in the supporting ring, and set up second pressure difference changer in the both sides of coarse strainer, impurity and filth between two filter screens accumulate when too much, when washing it, too much impurity and filth can cause the jam to the coarse strainer, and then the both sides of coarse strainer can produce pressure differential, at this moment the motor will drive the coarse strainer and rotate, make impurity and filth pass through, after the certain time, the motor drives the coarse strainer return, the support ring can be guaranteed not only to the filter screen cover of support ring outer fringe can rotate, can also prevent that rivers from directly passing through between support ring and the rose box.

3. According to the utility model, the spraying direction of the water curtain nozzle is set to form an included angle of 30-45 degrees with the dust, so that the water curtain can adsorb the dust more fully; through setting up the water curtain nozzle that can freely angle regulation, can make this device adapt to the dust of different flow directions.

Drawings

FIG. 1 is a schematic view of the arrangement structure of a water curtain dust removing device of the present invention;

FIG. 2 is a schematic diagram of a normal filtration state configuration of the present invention;

FIG. 3 is a schematic structural diagram of a backwashing sewage discharge state of the utility model;

FIG. 4 is a schematic view of a coarse strainer according to the present invention;

FIG. 5 is a schematic side sectional view of the roadway according to the present invention;

FIG. 6 is a schematic sectional view of the roadway at the top.

The reference numbers in the figures denote: 1-laneway; 2-pipeline; 3-self-cleaning filter; 4-water curtain nozzles; 5-a mobile host; 6-water curtain spray pipe; 7-a valve; 8-a filter box; 9-a water inlet pipe; 10-water outlet pipe; 11-high pressure water pipe; 12-sewage draining and water inlet pipe; 13-a sewage discharging pipe; 14-a water inlet control valve; 15-water outlet control valve; 16-a blowdown water outlet pipe control valve; 17-a sewage draining pipe; 18-a blow-off pipe control valve; 19-a motor; 20-a support ring; 21-coarse strainer; 22-a filter screen sleeve; 23-fine filter screen; 24-a first differential pressure transmitter; 25-second differential pressure transmitter.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The dust removal system for the working face at the lower part of the raise boring well comprises a roadway 1, wherein the top of the roadway 1 is provided with a pipeline 2, a self-cleaning filter 3 and a water curtain nozzle 4, a water inlet of the pipeline 2 is connected with a movable main machine 5, the self-cleaning filter 3 is arranged at one end, close to the water inlet, of the pipeline 2, a water curtain spray pipe 6 is communicated with fluid on the pipeline 2, and the water curtain nozzle 4 is arranged on the water curtain spray pipe 6; the water outlet end of the water curtain nozzle 4 is arranged towards the bottom of the roadway 1, and the water curtain nozzle 4 forms a water curtain on the cross section of the roadway 1; the number of the water curtain spray pipes 6 is three, nine water curtain nozzles 4 are arranged on each of the three water curtain spray pipes 6, the distance between every two adjacent water curtain nozzles 4 on the same water curtain spray pipe 6 is 2-5m, and a valve 7 is arranged at one end, close to a water outlet, of the pipeline 2; the spraying direction of the water curtain nozzles 4 faces the dust coming direction, the included angle A between the spraying direction of the water curtain nozzles 4 and the dust coming direction is 30-45 degrees, the specific angle can be specifically set according to the dust flow rate, the larger the dust flow rate is, the smaller the angle A is, the dust flows to apply pressure on the sprayed water mist, the water mist trend is close to the cross section of the roadway 1, and therefore the spraying can be ensured to form a closed water curtain along the cross section of the roadway 1, and the dust removal is more thorough; the controller and the high-pressure water pump are arranged in the movable host 5, and the water inlet of the pipeline 2 is communicated with the fluid at the water outlet of the high-pressure water pump; the self-cleaning filter 3 comprises a filter box 8, a water inlet pipe 9, a water outlet pipe 10 and a high-pressure water pipe 11; the water inlet pipe 9 and the water outlet pipe 10 are respectively and fixedly arranged at two ends of the filter box 8, the water inlet pipe 9 is fixedly provided with a sewage inlet pipe 12, one end of the filter box 8 close to the water outlet pipe 10 is fixedly provided with a sewage outlet pipe 13, and the sewage inlet pipe 12 is communicated with the sewage outlet pipe 13 through a high-pressure water pipe 11; a water inlet control valve 14 is arranged on the water inlet pipe 9, a water outlet control valve 15 is arranged on the water outlet pipe 10, and a sewage discharging outlet pipe control valve 16 is arranged on the sewage discharging outlet pipe 13; a sewage discharge pipe 17 is fixedly arranged at one end of the bottom of the filter box 8 close to the water inlet pipe 9, and a sewage discharge pipe control valve 18 is arranged on the sewage discharge pipe 17; a motor 19 is fixedly installed at the bottom of the filter box 8, an output shaft of the motor 19 extends into the filter box 8 and is fixedly connected with the side edge of a support ring 20, the diameter of the support ring 20 is smaller than the inner diameter of the filter box 8, the support ring 20 is coaxial with the filter box 8, a coarse strainer 21 is fixedly installed inside the support ring 20, a strainer sleeve 22 is fixedly installed on the outer edge of the support ring 20, the outer diameter of the strainer sleeve 22 is equal to the outer diameter of the filter box 8, and the outer wall of the strainer sleeve 22 is in sealing fit with the inner side wall of the filter box 8; a fine filter screen 23 is fixedly arranged in the filter box 8 at a position close to the water outlet pipe 10, first pressure difference transmitters 24 are arranged on two sides of the fine filter screen 23, and second pressure difference transmitters 25 are arranged on two sides of the coarse filter screen 21; the water inlet control valve 14 is arranged between the joint of the sewage inlet pipe 12 and the water inlet pipe 9 and the water outlet end of the water inlet pipe 9; the motor 19 is positioned at one side of the sewage discharge pipe 17 departing from the water inlet pipe 9, and the fine filter screen 23 is positioned at one side of the sewage discharge water outlet pipe 13 departing from the water outlet pipe 10; the water inlet control valve 14, the water outlet control valve 15, the sewage discharging and water discharging pipe control valve 16, the sewage discharging pipe control valve 18, the motor 19, the first pressure difference transmitter 24 and the second pressure difference transmitter 25 are all connected with the electric cabinet through signal lines.

The working principle is as follows: clean water is sent into the self-cleaning filter 3 by a high-pressure water pump, and under the normal filtering state of the self-cleaning filter 3, the clean water can sequentially pass through the water inlet pipe 9, the coarse filter screen 21, the fine filter screen 23 and the water outlet pipe 10, then enters the three-water-curtain spray pipe 6, is sprayed out of the cylindrical water curtain by the plurality of water-curtain nozzles 4, adsorbs dust, and finally water carrying the dust enters the drainage ditch; when enough impurity layers are accumulated on the fine filter screen 23, enough pressure difference is generated on two sides of the fine filter screen 23, the first pressure difference transmitter 24 transmits signals to the electric cabinet, the electric cabinet controls the closing of the water inlet control valve 14 and the water outlet control valve 15, the sewage discharging outlet pipe control valve 16 and the sewage discharging pipe control valve 18 are opened, clean water enters the filter box 8 along the high-pressure water pipe 11 and then sequentially passes through the fine filter screen 23 and the coarse filter screen 21, impurities on the two filter screens are washed off, and finally the sewage discharging pipe 17 flows out; during back flushing, when impurities between the coarse filter screen 21 and the fine filter screen 23 are excessive and block the coarse filter screen 21, pressure difference is formed on two sides of the coarse filter screen 21, the electric cabinet controls the motor 19 to rotate the coarse filter screen 21 so that the impurities pass through, after a certain time, the coarse filter screen 21 returns to the original position, and after the pressure difference on two sides of the fine filter screen 23 is balanced, the normal filtering state is restored again.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications are possible which remain within the scope of the appended claims.

Claims

1. The dust removal system for the working face of the lower part of the raise boring comprises a roadway (1) and is characterized in that a pipeline (2), a self-cleaning filter (3) and a water curtain nozzle (4) are arranged at the top of the roadway (1), a water inlet of the pipeline (2) is connected with a movable main machine (5), the self-cleaning filter (3) is arranged at one end, close to the water inlet, of the pipeline (2), a water curtain spray pipe (6) is communicated with fluid on the pipeline (2), and the water curtain nozzle (4) is arranged on the water curtain spray pipe (6); the water outlet end of the water curtain nozzle (4) faces towards the bottom of the roadway (1), and the water curtain nozzle (4) is arranged on the cross section of the roadway (1) to form a water curtain.

2. The raise boring lower face dust pelletizing system of claim 1, characterized in that, the quantity of the water curtain spray pipe (6) is three, nine water curtain nozzles (4) are arranged on three water curtain spray pipes (6), the distance between two adjacent water curtain nozzles (4) on the same water curtain spray pipe (6) is 2-5m, and a valve (7) is arranged at one end of the pipeline (2) close to the water outlet.

3. The raise boring lower face dust removal system according to claim 2, characterized in that the movable main machine (5) is internally provided with a controller and a high pressure water pump, and the water inlet of the pipeline (2) is in fluid communication with the water outlet of the high pressure water pump.

4. The raise boring lower face dust removal system of claim 3, wherein the self cleaning filter (3) comprises a filter box (8), a water inlet pipe (9), a water outlet pipe (10) and a high pressure water pipe (11); the water inlet pipe (9) and the water outlet pipe (10) are respectively and fixedly installed at two ends of the filter box (8), a sewage drainage water inlet pipe (12) is fixedly installed on the water inlet pipe (9), a sewage drainage water outlet pipe (13) is fixedly installed at one end, close to the water outlet pipe (10), of the filter box (8), and the sewage drainage water inlet pipe (12) is communicated with the sewage drainage water outlet pipe (13) through the high-pressure water pipe (11); a water inlet control valve (14) is arranged on the water inlet pipe (9), a water outlet control valve (15) is arranged on the water outlet pipe (10), and a sewage draining water outlet control valve (16) is arranged on the sewage draining water outlet pipe (13); a sewage discharge pipe (17) is fixedly arranged at one end of the bottom of the filter box (8) close to the water inlet pipe (9), and a sewage discharge pipe control valve (18) is arranged on the sewage discharge pipe (17); the bottom fixed mounting of rose box (8) has motor (19), the output shaft of motor (19) stretches into the inside of rose box (8) and the side fixed connection of support ring (20), the diameter of support ring (20) is less than the internal diameter of rose box (8), support ring (20) with rose box (8) are coaxial, the inside fixed mounting of support ring (20) has coarse strainer (21), the outer fringe fixed mounting of support ring (20) has filter screen cover (22), the external diameter of filter screen cover (22) equals with the external diameter of rose box (8), and the outer wall of filter screen cover (22) with the inside wall sealing fit of rose box (8); the inside of rose box (8) is close to the position fixed mounting of outlet pipe (10) has thin filter screen (23), the both sides of thin filter screen (23) all are provided with first pressure differential changer (24), the both sides of coarse strainer (21) all are provided with second pressure differential changer (25).

5. The raise boring lower face dust removal system of claim 4, characterized in that the water inlet control valve (14) is disposed between the junction of the blowdown inlet pipe (12) and the inlet pipe (9) and the water outlet end of the inlet pipe (9); the motor (19) is located the blow off pipe (17) deviates from one side of inlet tube (9), fine filter screen (23) is located blow off outlet pipe (13) deviates from one side of outlet pipe (10).

6. The raise boring lower working face dust pelletizing system of claim 5, characterized in that, water inlet control valve (14), water outlet control valve (15), blowdown outlet pipe control valve (16), blow off pipe control valve (18), motor (19), first differential pressure transducer (24) and second differential pressure transducer (25) are all connected with the electric cabinet through the signal line.

7. The raise boring lower face dust removal system according to any one of claims 1 to 6, wherein the water curtain nozzle (4) is directed toward the dust incoming direction and the water curtain nozzle (4) is directed at an angle A of 30 to 45 degrees with respect to the dust incoming direction.