CN215860282U - Dust flushing device for coal mine air return roadway - Google Patents

Abstract

A dust flushing device for a coal mine air return lane comprises a tunnel water pipe and a tunnel air pipe which are arranged in the air return lane, wherein a dust flushing water pipe is led out of the tunnel water pipe, the dust flushing water pipe is led out and then extends to the outside of an air door of an interconnection lane, and then turns back to the air return lane again; a plurality of spraying mechanisms are arranged in the air return roadway at intervals along the length direction of the dust flushing water pipe and the dust flushing air pipe. The atomized water quickly impacts the roadway wall by utilizing the wind speed to remove dust quickly by arranging the spray in the return airway and utilizing the condition of high wind speed in the return airway.

Description

Dust flushing device for coal mine air return roadway

Technical Field

The utility model relates to the field of roadway dust removal, in particular to a dust flushing device for a coal mine return airway.

Background

The high yield of modern colliery is high-efficient, for satisfying mine ventilation and pedestrian's needs, sets up the contact lane at every interval distance on the return airway, installs the air door on the contact lane that needs to use. In addition, a water pipe and an air pipe are also arranged in the return airway.

The large wind speed and the large gradient in the return airway are necessary ways for all toxic and harmful gases in the underground, the corresponding danger exists in the dust removal operation, the regulation of coal mine safety regulations requires two persons to enter the return airway, and the dust removal of the return airway always is the place causing the most illegal operation; at present, the domestic dust removal operation is basically to manually spray water to flush dust, which wastes manpower and water, and the dust flushing causes the bottom of a roadway to be silted and polluted, thereby threatening the walking safety during disaster avoidance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a dust flushing device for a coal mine return airway, and aims to solve the technical problem of water and labor waste in the dust removal process of the return airway.

In order to solve the technical problems, the utility model adopts the specific scheme that: a dust flushing device for a coal mine air return lane comprises a tunnel water pipe and a tunnel air pipe which are arranged in the air return lane, wherein a dust flushing water pipe is led out of the tunnel water pipe, extends to the outside of an air door of an interconnection lane after being led out of the tunnel water pipe, and then turns back again to the air return lane; the air return roadway is internally provided with a plurality of spraying mechanisms at intervals along the length direction of the dust flushing water pipe and the dust flushing air pipe, each spraying mechanism comprises a spray head, a water pipe branch pipe led out from the dust flushing water pipe and an air pipe branch pipe led out from the dust flushing air pipe, each spray head comprises a water inlet, an air inlet and a nozzle, the water inlets are connected to the water pipe branch pipes, the air inlets are connected to the dust flushing air pipes, one-way valves are respectively arranged at the positions of the water inlets and the air inlets, and the water inlets and the air inlets are respectively used for supplying water and air to enter the nozzles and then to be mixed and atomized and sprayed out.

As a further optimization of the technical scheme, the interval between two adjacent spraying mechanisms is 20 meters.

As a further optimization of the technical scheme, the number of the spray heads in any spray mechanism is multiple, the spray heads in the same spray mechanism are uniformly distributed at intervals along the cross section direction of the return airway, water outlet holes and air outlet holes with the same number as the spray heads are respectively formed in the water pipe branch pipes and the air pipe branch pipes, the water outlet holes are connected with the water inlet, and the air outlet holes are connected with the air inlet.

As the further optimization of the technical scheme, the dust-washing water pipe and the dust-washing air pipe are arranged in parallel in the air return lane and the connecting lane and are positioned on the side wall of the air return lane and the side wall of the connecting lane.

As the further optimization of the technical scheme, the air pipe branch pipes and the water pipe branch pipes are arranged in parallel along the cross section direction of the air return tunnel.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the condition that the air speed of the return airway is high is utilized, the spray is set, and the atomized water quickly impacts the airway wall by utilizing the air speed, so that the floating dust on the airway wall is brought out of the airway or falls on the bottom of the airway along with the fog water, thereby effectively reducing labor force, saving water and enhancing the timeliness of dust removal. Because the atomized spray is less than the water sprinkling and dust settling water, a part of atomized water can be taken out of the return airway along with the wind flow, the water quantity falling at the bottom of the return airway is less, and the atomized spray can volatilize along with the wind flow in a short time, so that the silt caused by the erosion of the airway can be reduced.

2. According to the utility model, the dust flushing water pipe and the dust flushing air pipe are respectively led out from the original tunnel water pipe and the original tunnel air pipe in the air return tunnel, water and air in the tunnel water pipe and the tunnel air pipe are used as a water source and an air source, the water source and the air source do not need to be searched from the outside, and the operation is convenient.

3. Adopt outer muddy wind water linkage shower nozzle, be provided with the check valve on water inlet and the air intake respectively, mix atomizing blowout again after water and wind get into the nozzle, both increased the effect of strong atomizing, avoided again under the condition of water pressure and wind pressure imbalance, the wind in the pipeline, water cluster each other appear, cause the water pipe to have gas, the tuber pipe has the condition of water.

4. The device simple structure need not use power equipment can accomplish the dust removal effect, can effectively avoid setting up electric great hidden danger in the return air tunnel.

5. The water valve and the air pipe valve are led out of the air door from the air return lane, so that workers do not need to enter the air return lane, the valves are opened outside the air door by one person, and the valves are closed after dust removal is finished, so that the number of workers is reduced, and one worker can finish dust removal work; compared with the method that workers enter the return airway to manually spray water and flush dust, the method reduces the operation time of the workers, lightens the labor intensity of the workers, and greatly improves the standard-reaching coefficient of the working quality.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of a cross-sectional structure of a roadway;

FIG. 3 is a schematic view of a showerhead structure;

reference numerals: 1. the air return roadway comprises an air return roadway, 2 dust flushing water pipes, 3 dust flushing air pipes, 4 connecting roadways, 5 water pipe valves, 6 air pipe valves, 7 air doors, 8 spraying mechanisms, 801 water pipe branch pipes, 802 air pipe branch pipes, 803 spray heads, 8031 air inlets, 8032 water inlets, 8033 check valves, 8034 spray nozzles, 9 roadway air pipes, 10 roadway water pipes.

Detailed Description

As shown in fig. 1, the utility model relates to a dust-washing device for a coal mine return airway, which comprises a tunnel water pipe 10 and a tunnel air pipe 9 which are arranged in the return airway 1. A dust flushing water pipe 2 is led out of the roadway water pipe 10, the dust flushing water pipe 2 is led out of the roadway water pipe 10 and then extends to the outside of an air door 7 of the connection lane 4, the dust flushing water pipe 2 is folded outside the air door 7 and returns to the connection lane 4 and extends to the air return lane 1, and a water pipe valve 5 is arranged on the dust flushing water pipe 2 outside the air door 7; similarly, a dust-washing air pipe 3 is led out from the tunnel air pipe 9, the dust-washing air pipe 3 extends to the outside of an air door 7 of the communication lane 4 after being led out from the tunnel air pipe 9, the dust-washing air pipe 3 is folded outside the air door 7 and returns to the communication lane 4 and extends to the return air lane 1, and an air pipe valve 6 is arranged on the dust-washing air pipe 3 outside the air door 7.

The dust-washing water pipe 2 and the dust-washing air pipe 3 in the air return lane 1 are arranged along the length direction of the air return lane 1, and the dust-washing water pipe 2 and the dust-washing air pipe 3 are arranged on the side wall of one side of the air return lane 1 in parallel. The dust flushing water pipe 2 and the dust flushing air pipe 3 are provided with spraying mechanisms 8 at intervals, the number of the spraying mechanisms 8 is reasonably configured according to the length of the return airway 1, the return airway 1 is ensured not to have dust removing blind areas, and the interval distance between every two adjacent spraying mechanisms 8 is 20 m.

As shown in fig. 2 and 3, the spraying mechanism 8 includes a plurality of spray heads 803, a water pipe branch pipe 801 led out from the dust-washing water pipe 2, and an air pipe branch pipe 802 led out from the dust-washing air pipe 3, the plurality of spray heads 803 are fixed on the inner wall of the air return passage 1, the water pipe branch pipe 801 and the air pipe branch pipe 802 are distributed in parallel and adjacently along the cross section of the air return passage 1, and the water pipe branch pipe 801 and the air pipe branch pipe 802 are respectively provided with water outlets and air outlets, the number of which is the same as that of the spray heads 803. The nozzle 803 is an external air-mixing water linkage nozzle 803, the nozzle 803 comprises a water inlet 8032, an air inlet 8031 and a nozzle 8034, the water inlet 8032 is connected with a water outlet, the air inlet 8031 is connected with an air outlet, the water inlet 8032 and the air inlet 8031 are respectively provided with a one-way valve 8033, and the water inlet 8032 and the air inlet 8031 are used for supplying water and air to enter the nozzle 8034 and then are mixed, atomized and sprayed out. The setting of outer muddy wind water linkage shower nozzle 803 has both increased the effect of strong atomizing, has avoided again that wind and water in tuber pipe branch pipe 802 and the water pipe branch pipe 801 mix earlier and get into shower nozzle 803 again, avoids under the uneven circumstances of water pressure and wind pressure, and the wind in the pipeline, water cluster each other appear, cause water pipe branch pipe 801 to have gas, tuber pipe branch pipe 802 has the circumstances of water.

In addition, in order to control the pressure in the dust flushing water pipe 2 and the dust flushing air pipe 3, a pressure pump may be respectively arranged on the dust flushing water pipe 2 and the dust flushing air pipe 3 outside the air door 7. When a water source and an air source are arranged outside the valve, the dust flushing water pipe 2 and the dust flushing air pipe 3 can also be connected with the water source and the air source outside the valve.

For the convenience of understanding the above technical solution of the present invention, the following detailed description is made of the operation mode of the present embodiment in the practical process.

When the dust removal device is used, a worker opens the water pipe valve 5 and the air pipe valve 6 outside the air door 7, atomization spraying is carried out in the air return tunnel 1 through the externally-connected atomization spray head 803, atomized water quickly impacts the tunnel wall through the air speed, and therefore the dust removal effect is achieved, and the worker can complete dust removal operation without entering the air return tunnel 1.

One worker can execute the dust removal work, and the number of workers is reduced. According to the traditional dust removal mode, at least two persons enter the return airway 1 to form a group, and after the mode is used, no person needs to enter the return airway 1, only one person needs to open the valve outside the air door 7, and the valve is closed after dust removal is finished. The dust removal of the return airway 1 needs 2 workers every time, the dust removal is carried out for 4 times per month, 8 workers can be saved, 16 workers can be saved per month according to the calculation of the return airway 1 on two wings, the labor cost can be saved per month according to the calculation of 150 yuan per worker, and the labor cost can be saved by 2400 yuan per month.

Claims (5)

1. A dust flushing device for a coal mine return airway comprises an airway water pipe (10) and an airway air pipe (9) which are arranged in the return airway (1), it is characterized in that a dust flushing water pipe (2) is led out of the roadway water pipe (10), the dust flushing water pipe (2) is led out of the roadway water pipe (10) and then extends to the outside of an air door (7) of the connecting roadway (4), then the dust-washing air pipe is turned back into the air return roadway (1) again, the dust-washing air pipe (3) is led out from the roadway air pipe (9) and then extends to the outside of the air door (7) at the connecting roadway (4), then the dust-washing water pipe and the dust-washing air pipe are turned back into the air return lane (1) again, the dust-washing water pipe (2) and the dust-washing air pipe (3) which are positioned outside the air door (7) are respectively provided with a water pipe valve (5) and an air pipe valve (6), and the dust-washing water pipe (2) and the dust-washing air pipe (3) in the air return lane (1) are both arranged along the length direction of the air return lane (1); a plurality of spraying mechanisms (8) are arranged in the air return way (1) at intervals along the length direction of the dust flushing water pipe (2) and the dust flushing air pipe (3), each spraying mechanism (8) comprises a spray head (803), a water pipe branch pipe (801) led out from the dust flushing water pipe (2) and an air pipe branch pipe (802) led out from the dust flushing air pipe (3), each spray head (803) comprises a water inlet (8032), an air inlet (8031) and a nozzle (8034), each water inlet (8032) is connected to the corresponding water pipe branch pipe (801), each air inlet (8031) is connected to the corresponding dust flushing air pipe (3), check valves (8033) are arranged at the positions of the corresponding water inlet (8032) and the corresponding air inlet (8031), and the corresponding water inlet (8032) and the corresponding air inlet (8031) are respectively used for supplying water and air to enter the corresponding nozzle (8034) to be mixed, atomized and sprayed out.

2. A coal mine return airway dust washing device according to claim 1 characterised in that the spacing between adjacent sets of spray mechanisms (8) is 20 metres.

3. The coal mine return airway dust washing device according to claim 1, characterized in that the number of the spray heads (803) in any one spray mechanism (8) is multiple, the spray heads (803) in the same spray mechanism (8) are uniformly distributed at intervals along the cross section direction of the return airway (1), the water pipe branch pipe (801) and the air pipe branch pipe (802) are respectively provided with water outlet holes and air outlet holes, the number of the water outlet holes is consistent with that of the spray heads (803), the water outlet holes are connected with the water inlet (8032), and the air outlet holes are connected with the air inlet (8031).

4. The coal mine return airway dust washing device according to the claim 1, characterized in that the dust washing water pipe (2) and the dust washing air pipe (3) are arranged in parallel in the return airway (1) and the connecting airway (4) and are positioned on the same side wall of the return airway (1) and the connecting airway (4).

5. A coal mine return airway dust washing device according to claim 1 characterised in that the air duct branch pipes (802) and the water duct branch pipes (801) are arranged in parallel along the cross section of the return airway (1).

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