CN219472050U - Cyclone dust collector for coal mine drilling - Google Patents

Abstract

The utility model relates to a technical field of coal mining equipment specifically discloses a colliery is cyclone dust collector for drilling, including the cyclone, with the gas outlet of cyclone intercommunication take out the pipe and connect the four-way pipe at the drilling port, the four-way pipe includes two coaxial third export and the fourth export that supply the drilling rod to get into that set up, with the second export of second gas take out the pipe intercommunication, and with the first export of the entry intercommunication of cyclone. The purpose of this patent is when solving colliery drilling, causes the problem of potential safety hazard because the gas exceeds limit.

Description

Cyclone dust collector for coal mine drilling

Technical Field

The utility model relates to the technical field of coal mining equipment, in particular to a cyclone dust removal device for coal mine drilling.

Background

The outburst of coal and gas refers to the phenomenon that broken coal and gas are suddenly sprayed out from the coal body to a mining space in a large quantity under the action of pressure, and the outburst of the coal and the gas is another type of special gas emission phenomenon, and has extremely high destructiveness. The number of the mines with outstanding coal and gas in China is large, the distribution range is wide, the disaster with outstanding gas seriously threatens the safe production of the coal mine in China, and the disaster is the most serious coal mine dynamic disaster in China.

At present, when an anti-burst extraction drilling hole is constructed in a coal mine, drill cuttings in the drilling hole need to be discharged in time in order to ensure normal drilling work, most of the current methods adopting wind power to discharge the drill cuttings in the drilling hole are difficult to realize deep hole drilling by adopting other deslagging technologies in a soft coal seam. However, in the process of wind power deslagging, coal dust flies up to cause serious exceeding of dust, which is also a potential safety hazard in coal mine production adopting wind power deslagging, and in order to reduce the potential safety hazard generated in the process of wind power deslagging, a dust remover is arranged in a discharge channel of drill cuttings (coal dust) in the process of drilling, and the coal dust is reduced through the dust remover. In the drilling process, jet holes (small-sized gas protruding) often appear, so that gas in the tunnel wind current exceeds the limit (when the gas concentration reaches 4% -16%, the gas can explode when encountering a fire source), and even large-sized coal mine gas protruding is caused.

The gas drainage pipe that can connect the gas drainage pipeline is increased on current dust remover because the gas is outstanding to be the gas and gushes out a large amount of gas in the twinkling of an eye under the effect of pressure, and be provided with the gas drainage pipe of extraction gas in the current dust remover, but the flow of extraction gas pipe is invariable, when the gas quantity that the gas is outstanding to gush out is greater than the flow of gas drainage pipe, just can't solve the problem that the gas is outstanding, at this moment, a large amount of gas gushes into in the tunnel, causes the gas to overrun, this brings very big potential safety hazard to the production of colliery, and the installation of present gas protection outburst device is firm moreover, installation and dismantlement are all inconvenient, can influence work efficiency. Meanwhile, the existing prominent problem is that water, slag and gas discharged from the orifice cannot be well separated. Although the existing partial gas dust suppression device is provided with a spiral type and a funnel type, because the characteristics of solid, liquid and gas three-phase substances are not well separated, the situations that the discharged water slag is easy to block a pipeline, the pipeline leaks dust to directly enter a working face, water flows on the coal face to cause the damage of the working face and the like are caused, great inconvenience is brought to site construction, and potential safety hazards exist.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a cyclone dust removal device for coal mine drilling, which aims to solve the problem of potential safety hazard caused by gas overrun during coal mine drilling.

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

the utility model provides a colliery is cyclone dust collector for drilling, includes the cyclone, with the gas outlet intercommunication of cyclone first gas drainage pipe and connect the four-way pipe at the drilling port, the four-way pipe includes two coaxial third export and the fourth export that supply the drilling rod to get into that set up, with the second export of second gas drainage pipe intercommunication, and with the first export of cyclone entry intercommunication.

The principle of the scheme is as follows:

through setting up the four-way pipeline to come impurity and the gas discharge that produces the drilling by the first export intercommunication whirlwind separation case of four-way pipeline, and directly communicate the second gas drainage pipe through the second export of four-way pipeline, when the gas is outstanding more, handle in arranging the whirlwind separation case through first export, then the gas also can be through the first gas drainage pipe discharge with the gas outlet intercommunication of whirlwind separation case, also carry out the direct discharge to the gas through the second gas drainage pipe with the second export intercommunication, can avoid gas to pile up in the drilling and spill over even to the working face of coal mining and cause the potential safety hazard.

The beneficial effect that this scheme produced is:

through the installation of four-way pipeline to discharge the gas through first gas drainage pipe and second gas drainage pipe, avoid the gas that produces in the drilling process to spill over to the working face of coal-winning and cause the potential safety hazard.

Further, a hole sealing pipe is fixed at the third outlet of the four-way pipe, an air duct is fixed at one side of the periphery of the hole sealing pipe, which is close to the four-way pipe, an air port is fixedly arranged at one end of the air duct, and an expansion hose is fixedly arranged at the other end of the air duct. The sealing of the third outlet of the four-way pipe is realized through the hole sealing pipe, a gap for circulation of drilling slag is reserved between the hole sealing pipe and the drill rod, gas can be filled into the expansion hose through the gas port and the gas guide pipe, the expansion hose is in an expansion state and is tightly attached to the inner wall of a drilled hole, sealing of the drilled hole is realized, the drilling slag generated in the drilling process is discharged from the gap between the hole sealing pipe and the drill rod, the expansion hose is in a soft couch state, and the gas guide pipe is arranged to accelerate the speed of the gas filling point in the expansion hose.

Further, a flange plate for sealing the fourth outlet is fixed at the fourth outlet of the four-way pipeline opposite to the third outlet. The fourth outlet of the four-way pipe is sealed by the flange while ensuring that the drill rod can be rotated after extending through the flange into the borehole.

Further, a sealing rubber plug which is attached to each other is arranged between the two flanges of the flange plate. The sealing rubber plug can enhance the sealing effect of the flange plate on the fourth outlet, and meanwhile, after the drill rod is introduced into the drill hole, the sealing rubber plug can be in contact with the drill rod, so that direct friction between the drill rod and the flange plate is reduced, and the purpose of prolonging the service life of the flange plate can be achieved.

Further, a solid separation box is arranged at the outlet of the cyclone separation box, and a drainage pipeline is arranged at one side of the solid separation box. The solid separation box is used for receiving the separated solid and liquid in the cyclone separation box, and discharging the liquid from a drainage pipeline at one side of the solid separation box, so that the separation of gas, liquid and solid is realized.

Further, a nozzle tangential to the side wall of the cyclone separation box is arranged on the side wall of the upper part of the cyclone separation box, and the nozzle is communicated with a compressed air source and a water storage tank. When the water in the water storage tank is sprayed into the cyclone separation tank through the nozzle to reduce dust, the speed and the strength of the water sprayed by the nozzle are improved by combining a compressed air source, and strong rotational flow is generated, so that the separation speed of solids and gas is increased.

Drawings

FIG. 1 is a schematic structural view of a cyclone dust collector for coal mine drilling provided by the utility model;

fig. 2 is a schematic cross-sectional view of a four-way pipe of the cyclone dust collector for coal mine drilling.

Reference numerals in the drawings of the specification include:

the four-way pipe 101, the first outlet 1011, the second outlet 1012, the third outlet 1013, the fourth outlet 1014, the flange 102, the screw 1021, the sealing rubber plug 103, the expansion hose 104, the hole sealing pipe 105, the gas port 106, the gas guide pipe 107, the coal seam 201, the drill pipe 301, the drill 302, the drilling machine 303, the water flap 304, the cyclone box 401, the solid separation box 402, the drainage pipe 403, the nozzle 404, the supporting seat 405, the slag inlet 406, the slag outlet 407, the slag discharging pipe 408, the first gas drainage pipe 501 and the second gas drainage pipe 502.

Detailed Description

The following is a further detailed description of the embodiments:

in the drilling process, gas is overrun and can not in time discharge, can cause the potential safety hazard, simultaneously, can produce a large amount of coal dust, in order to guarantee the normal clear of drilling work, need in time discharge the coal dust in the drilling, can cause the coal dust to fly upward at the in-process of discharging the coal dust and make the dust seriously exceed standard, and then can lead to the potential safety hazard of colliery production, consequently, need set up dust collector and reduce the coal dust.

As shown in fig. 1-2, a cyclone dust collector for coal mine drilling has the following specific structure: the water pipe and the drilling machine 303 are connected together through the water braid, and in the process of drilling the coal seam 201 by the drilling machine 303, the pressure-bearing water in the water pipe enters the drilling machine 303 from the water braid, enters the drill rod 301 through the drilling machine 303, and then is sprayed into the drilled holes from the drill bit 302 through the drill rod 301, so that the effect of dust fall can be achieved. The dust removing and gas discharging device is arranged at the orifice of the drilling hole, the dust removing and gas discharging device comprises a four-way pipe 101, a third outlet 1013 of the four-way pipe 101 extends into the drilling hole, a sealing hole pipe 105 is fixedly arranged at the third outlet 1013, a certain gap exists between the drilling rod 301 and the sealing hole pipe 105 after the drilling rod 301 is introduced into the drilling hole, the drilling slag generated by the drilling hole can be ensured to flow to the four-way pipe 101 through the gap between the drilling rod 301 and the sealing hole pipe 105 to be treated, an air duct 107 is fixedly arranged at one side of the periphery of the sealing hole pipe 105 close to the four-way pipe 101, two ends of the air duct 107 are opened, an air port 106 is fixedly arranged at one end of the air duct 107 close to the four-way pipe 101, an expansion hose 104 is fixedly arranged at the other end of the air duct 107, the air duct 107 is used for realizing the communication between the air port 106 and the expansion hose 104, air can be filled into the expansion hose 104 through the air port 106, so that the expansion hose 104 is expanded and is tightly attached to the inside of a drilling hole, the sealing of the hole opening of the drilling hole is realized, drilling slag generated by the drilling hole can not flow to the outside of the drilling hole from a gap between the drilling hole and the hole sealing pipe 105, and the expansion hose 104 is in a soft collapse state when not inflated, the sealing of the hole opening of the drilling hole can not be realized quickly by directly inflating the expansion hose 104 through the air port 106, and the air duct 107 is arranged between the air port 106 and the expansion hose 104, so that the inflation speed of the expansion hose 104 can be accelerated; the drill rod 301 passes through a third outlet 1013 and a fourth outlet 1014 of the four-way pipe 101, a flange plate 102 is fixed at a fourth outlet 1014 of the four-way pipe 101 opposite to the third outlet 1013, a sealing rubber plug 103 attached to the two flanges is fixed between the two flanges of the flange plate 102, the two flanges and the sealing rubber plug 103 are fixed through screws 1021, when the drill rod 301 passes through the fourth outlet 1014, the flange plate 102 and the sealing rubber plug 103 can seal the fourth outlet 1014, meanwhile, the drill rod 301 can be ensured to rotate, and the sealing rubber plug 103 can reduce the direct friction force between the flange plate 102 and the drill rod 301, so that the service life of the flange plate 102 is prolonged; the central axes of the first outlet 1011 and the second outlet 1012 of the four-way pipe 101 are perpendicular to the central axes of the third outlet 1013 and the fourth outlet 1014, the second outlet 1012 is directly communicated with the second gas drainage pipe 502, a slag discharging pipe 408 is fixed at the first outlet 1011 opposite to the second outlet 1012, the other end of the slag discharging pipe 408 is fixedly connected with a slag inlet 406 of the cyclone separation box 401, the cyclone separation box 401 is supported by a supporting seat 405 so as to realize the relative fixation with the ground, a solid separation box 402 for containing solid waste slag and liquid is arranged below the slag outlet 407 of the cyclone separation box 401, a drainage pipeline 403 for draining liquid is arranged on one side of the solid separation box 402 so as to realize the separation of solid and liquid, a nozzle 404 tangential to the side wall of the cyclone separation box 401 is fixed on the side wall of the upper part of the cyclone separation box 401, the nozzle 404 is communicated with a compressed air source and a water storage tank, the speed of the nozzle 404 is increased and the water sprayed out of the nozzle 404 is increased under the action of the compressed air source when dust is reduced in the drilling process, a powerful cyclone separation effect is formed, the separation of solid and slag and gas is realized, the solid waste slag and the liquid are separated from the slag separation box and the liquid are prevented from falling from the slag outlet 407, the gas and the gas is prevented from being separated from the gas drainage pipeline and the solid waste gas is discharged from the gas separation box and the gas separation box.

Meanwhile, gas is generated in the drilling process, when the amount of the gas is in a qualified range, the gas is pumped out of the second gas pumping pipe 502 communicated with the second outlet 1012 of the four-way pipe 101, so that the gas is not accumulated in the drilling, when the amount of the gas released in the drilling is excessive, besides the gas is pumped out through the second gas pumping pipe 502 communicated with the second outlet 1012 of the four-way pipe 101, the gas is mixed with drilling slag and other heavier impurities, enters the cyclone separation box 401 from the first outlet 1011 through the slag discharging pipe 408, and then the gas is rapidly discharged into the first gas pumping pipe 501 for pumping out by increasing the flow of the nozzle 404, so that the air pressure and the gas amount in the drilling are reduced, and the problem of potential safety hazards caused by overflow of the gas to a working surface is solved.

After the four-way pipe 101 is arranged at the hole opening of the drill hole, the expansion hose 104 is inflated through the air port 106, so that the expansion hose 104 is in an expansion state and is tightly attached to the inner wall of the drill hole, the hole opening of the drill hole is sealed, coal dust and drilling slag generated in the drilling process are prevented from flowing into the air outside the drill hole, and meanwhile, the expansion hose 104 can relatively fix the position between the four-way pipe 101 and the drill hole after being expanded, and shaking of the four-way pipe 101 in the drilling process is avoided.

The specific implementation process is as follows:

the drill bit 302 with the outer diameter of 158mm is used for drilling a 600mm long drill hole, then the third outlet 1013 of the four-way pipe 101, which is fixedly provided with the hole sealing pipe 105, the air duct 107, the air port 106 and the expansion hose 104, is installed in the drill hole, then the second gas drainage pipe 502 is fixedly connected with the second outlet 1012 of the four-way pipe 101, the communication between the second outlet 1012 and the second gas drainage pipe 502 is realized, the slag discharging pipe 408 is fixedly connected with the first outlet 1011 of the four-way pipe 101, then the other end of the slag discharging pipe 408 is fixedly connected with the slag inlet 406 of the cyclone box 401, the communication between the first outlet 1011 and the cyclone box 401 is realized, the cyclone box 401 is supported by the supporting seat 405, the solid separation box 402 for containing solids and liquids is placed at the lower end of the slag outlet 407 of the cyclone box 401, meanwhile, the drainage pipe 403 arranged at one side of the solid separation box 402 can discharge liquids in the solid separation box 402, the separation of the solids and the liquids is realized, the side wall of the cyclone box 402 is fixedly connected with the side wall of the cyclone box 402, the side wall of the cyclone separation box 404 is more tightly connected with the air inlet 404 and the air outlet 404, the air outlet 404 is more tightly connected with the air suction nozzle and the cyclone air source, and the air outlet 404 is more quickly compressed, and the effect of the cyclone box is realized, and the air is more effective and the air is more greatly compressed.

When the gas quantity generated during drilling is within the qualified range, the gas can be pumped by a second gas pumping pipe 502 communicated with a second outlet 1012, meanwhile, drilling slag and other heavier impurities enter the cyclone separation box 401 from a first outlet 1011 through a slag discharging pipe 408, the solid and the gas are separated through the cyclone effect generated by a nozzle 404, and the gas can be directly pumped by the first gas pumping pipe communicated with the gas outlet of the cyclone separation box 401 after being purified; when gas overflows, the gas flows out to the position of the four-way pipe 101 along the drill pipe 301, besides the gas is pumped out by the second gas pumping pipe 502 communicated with the second outlet 1012, the gas is mixed with drilling slag and other heavier impurities, the drilling slag and other heavier impurities enter the cyclone separation box 401 from the first outlet 1011 through the slag discharging pipe 408, and the gas is rapidly discharged into the first gas pumping pipe 501 for pumping out by increasing the flow of the nozzle 404, so that the air pressure and the gas quantity in a drilling hole are reduced, and the problem of potential safety hazard caused by the overflow of the gas to a working surface is solved.

The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (6)

1. The utility model provides a colliery is cyclone dust collector for drilling, includes the cyclone, with the gas outlet intercommunication of cyclone first gas drainage pipe and connect the four-way pipe at the drilling port, its characterized in that: the four-way pipe comprises a third outlet and a fourth outlet which are coaxially arranged and used for a drill rod to enter, a second outlet communicated with the second gas drainage pipe, and a first outlet communicated with the inlet of the cyclone separation box.

2. The cyclone dust removal device for coal mine drilling as claimed in claim 1, wherein: the third outlet of the four-way pipe is fixedly provided with a hole sealing pipe, one side, close to the four-way pipe, of the periphery of the hole sealing pipe is fixedly provided with an air duct, one end of the air duct is fixedly provided with an air port, and the other end of the air duct is fixedly provided with an expansion hose.

3. The cyclone dust removal device for coal mine drilling as claimed in claim 2, wherein: and a flange plate for sealing the fourth outlet is fixed at the fourth outlet of the four-way pipeline opposite to the third outlet.

4. A cyclone dust collector for coal mine drilling according to claim 3, wherein: and a sealing rubber plug is arranged between the two flanges of the flange plate.

5. The cyclone dust removal device for coal mine drilling as claimed in claim 1, wherein: the cyclone separating box is provided with a solid separating box at the outlet, and a drainage pipeline is arranged at one side of the solid separating box.

6. The cyclone dust removal device for coal mine drilling as claimed in claim 1, wherein: the side wall of the upper part of the cyclone separation box is provided with a nozzle tangential to the side wall of the cyclone separation box, and the nozzle is communicated with a compressed air source and a water storage tank.