CN117588193A - Underground drilling blowout prevention and dust removal integrated equipment - Google Patents

Abstract

The invention provides downhole drilling blowout prevention and dust removal integrated equipment, which comprises: the orifice separating mechanism comprises a buffer box, the top of the buffer box is fixedly connected with the gas drainage port and the coal seam drainage port respectively, a slag inlet connected with the slag discharge port is fixedly arranged on the side wall of the buffer tank, the top of the buffer tank is fixedly connected with a negative pressure drainage pipe and the gas drainage pipe respectively, and the injection flow pipe is fixedly arranged to the top of the blow-down box through a bracket. The utility model provides an utilize venturi effect to realize gas drainage and dust absorption processing, this application design consideration is comprehensive, powerful, separate the processing after big granule buggy and tiny particle coal dust return from downthehole, through the design of drainage dust-extinguishing structure and blowout prevention filter mechanism, it is energy-concerving and environment-protective, the dust collection effect is good, when downthehole gas is unusual, become closed system at any time and take out the drainage to downthehole gas, the success rate of drilling construction has been improved greatly, the whole cover is equipped and is connected the back, become one set of closed system, the overflow of gas has been prevented in the time of the dust fall.

Description

Underground drilling blowout prevention and dust removal integrated equipment

Technical Field

The invention relates to blowout prevention and dust removal integrated equipment for underground drilling.

Background

In the process of underground coal mine gas control, the construction of the drilling hole is an important link, the construction of the coal seam drainage drilling hole can cause local pressure relief of coal seams around the drilling hole, the gas pressure and the gas content in the coal seam with prominent danger can be greatly reduced by draining the gas in the coal seam, and meanwhile, the gas potential in the coal body is released, so that the construction of the drilling hole has very important significance for smooth exploitation of the later coal seam, and the drilling hole belongs to the coal seam along-layer drilling hole drainage effect in the gas drainage drilling hole.

The traditional dust suppression mode mainly comprises the following three modes:

1. wind-water linkage dust suppression in holes: in the construction process, a tee joint is added at an air pipe joint at the tail end of an orifice drill rod and is connected with a water supply pipe, and part of water vapor is taken away into an orifice through compressed air to kill dust, but the method has the problem of water quantity control, and if the water quantity is too small, dust can be discharged still, so that the dust killing effect can not be achieved; if the water quantity is too large, the drill hole can be blocked due to unsmooth chip removal, and when the hole bottom compressed air reaches a certain strength, a spray hole phenomenon can appear, so that gas gathering is overrun, even the hole is blocked to a certain degree, and a drill holding phenomenon can also appear.

2. The drill lower tuyere uses roadway spraying to cooperate with a dust catching net to carry out dust suppression: the method is a substantial remedy measure, namely, a galvanized pipe with the same length as the roadway width is processed into a spray pipe with 4-5 spray heads, the spray pipe is arranged at the top of a lower tuyere roadway constructed by a drilling machine, and the spray pipe is matched with a dust catching net wall arranged at the lower end to carry out back-road dust suppression so as to ensure that dust cannot fly back. The method has the problems of influencing environmental sanitation, that firstly coal dust still exists around a drilling machine, and secondly water accumulation occurs below spraying, so that the method brings inconvenience to environmental cleaning and has poor dust suppression effect.

3. Orifice dust suppression: the orifice dust suppression has two modes: 1. the method has poor dust removing effect by using orifice spraying, and water is easily brought into the hole through the drill rod, so that the hole is in a drilling accident; 2. the dust remover is also the most common and effective dust removing method in the process of constructing coal seam bedding drilling, and the conventional orifice dust removing equipment has high price, but has poor blowout preventing effect although having dust removing function, and has more leakage points in the using process of the device, so that the effective prevention and control of gas can not be realized.

In the actual construction process, the compressed air is generally used as a medium for deslagging in the hole, however, a large amount of coal dust is carried out from the hole while the compressed air is used for removing chips, the coal dust can cause great damage to the environment of a construction site and cause great harm to the health of constructors, a large amount of gas is carried in the coal dust, and the anti-blowout effect is also achieved while the dust prevention is considered. Therefore, how to perform high-efficiency dust suppression in the construction process becomes a great problem.

For the reasons, in order to reduce the investment of equipment material cost, the cost is saved and the consumption is reduced; on the other hand, innovation is real, and the problems of dust pollution and drilling blowout prevention existing in the process of constructing the seam bedding holes are thoroughly solved. Therefore, a downhole drilling blowout prevention and dust removal integrated device is provided for the problems.

Disclosure of Invention

The invention provides underground drilling blowout prevention and dust removal integrated equipment for solving the technical problems of dust pollution and drilling blowout prevention during construction of a seam bedding hole.

In order to solve the defect of prior art, the application utilizes venturi effect to realize gas drainage and dust collection, the design of this application is considered week, powerful, separate the processing after big granule buggy and tiny particle coal dust return from downthehole, through the design of drainage dust-extinguishing structure and blowout prevention filter mechanism, it is energy-concerving and environment-protective, the dust collection effect is good, when downthehole gas is unusual, become closed system at any time and take out the drainage to downthehole gas, the success rate of drilling construction has been improved greatly, the whole set is equipped and is connected the back, become one set of closed system, the overflow of gas has been prevented in the time of the dust fall.

More in order to solve the problems in the prior art: the drilling blowout prevention and dust removal integrated equipment is simple and easy to install, only need beat a 1.5m deep drilling at the coal wall earlier and can install, whole installation only need be accomplished at construction first half hour, simultaneously small and exquisite light, single can the short distance be moved, staff intensity of labour greatly reduced, and dust removal effect is showing on the one hand large granule coal dust and is discharged by the dust suppression at the drill way slag notch, on the other hand fine coal dust carries out closed dust suppression in drainage dust arrester intraductal, double-pipe is even down, dust removal effect is better, before the actual measurement does not use dust removal system, the tuyere coal dust density of rig construction reaches about 20mg/m3, coal dust density can fall to about 8mg/m3 after using dust removal system.

Further in order to solve the problems in the prior art: through setting up blowout prevention filter mechanism with drill way separator and draw and blow dust suppression device, the drainage pipeline in pit reasonable combination together, played effectual buffering blowout prevention effect for construction site sanitation is showing and is improving. In the past, coal dust is accumulated everywhere around a construction site of a bedding hole, and the cleaning is very inconvenient. Although the rear spraying has dust removing effect, the construction site is easy to have water accumulation phenomenon, and the road is difficult to walk. The device is used at present, a large amount of coal dust is treated below the drilling hole, and the working environment of a construction site is effectively improved. The labor intensity of workers is reduced, the working efficiency is improved, the processing cost is low, waste pipes are selected as materials, no special parts are needed, and the equipment and material cost investment is saved.

The invention solves the technical problems by the following technical proposal:

the invention provides downhole drilling blowout prevention and dust removal integrated equipment, which comprises:

the orifice separating mechanism comprises a buffer box, the top of the buffer box is fixedly connected with the gas drainage port and the coal seam drainage port respectively, the bottom of the buffer box is fixedly connected with a slag discharge port, and two sides of the buffer box are fixedly connected with an orifice pipe and a drill pipe insertion pipe respectively;

the blowout prevention filtering mechanism comprises a buffer tank, a slag inlet connected with a slag discharge port is fixedly arranged on the side wall of the buffer tank, and the top of the buffer tank is fixedly connected with a negative pressure drainage pipe and a gas drainage pipe respectively;

the jet flow dust suppression mechanism comprises a sewage draining box and a jet flow pipe, the jet flow pipe is fixedly arranged at the top of the sewage draining box through a support, one end of the jet flow pipe is fixedly connected with a first connecting pipe, and the other end of the jet flow pipe is fixedly connected with a second connecting pipe which is obliquely distributed to one side of the jet flow pipe.

In this technical scheme, buffer tank top is equipped with gas drainage mouth and two coal seam drainage mouths, gas drainage mouths and inside filtration that all is equipped with of coal seam drainage mouth, buffer tank bottom is equipped with the slope bottom surface and communicates with the sediment mouth, buffer tank both sides outer wall respectively with corresponding distributed drill way pipe and drilling rod insert tube intercommunication, and the inside drilling rod of drilling rod insert tube runs through the drill way pipe and extends to inside the coal seam.

In this technical scheme, filtration includes spacing ring, enclosure and clamping lever, the spacing ring is respectively with gas drainage mouth and the inside fixed connection of coal seam drainage mouth, the sealed laminating of spacing ring top surface has the enclosure, the inside filter screen fixed connection that encloses, just enclosure top edge has seted up the breach that is used for the clamping lever gomphosis, the clamping lever rotates with gas drainage mouth and coal seam drainage mouth inner wall respectively and is connected, gas drainage mouth and coal seam drainage mouth inner wall all are connected with the clamping lever through the spring.

In this technical scheme, drill rod insert tube one end and drill way coil pipe fixed connection, the drill way coil pipe comprises two flange plates of mutually concatenation, and the gomphosis is installed between two flange plates and is filled up the second polyurethane, is close to the one end of buffer tank the drill rod insert tube diameter is less than the diameter of its other end, drill way coil pipe, drill rod insert tube and buffer tank all run through with a plurality of evenly distributed's long screw rod and peg graft, just long screw rod tip threaded connection has the nut with the laminating of drill way coil pipe.

In this technical scheme, the sleeve pipe that is located the drilling rod insert tube is cup jointed on long screw rod surface activity, sleeve pipe one side fixedly connected with the drilling rod insert tube runs through the guide arm of pegging graft, the guide arm extends to the drilling rod insert tube outside, the sleeve pipe both sides are all connected with first polyurethane pad through the connecting rod, first polyurethane pad is the arc structure and is located the drilling rod insert tube inside, first polyurethane pad and drill way coil pipe lateral wall sliding connection, just first polyurethane pad and second polyurethane pad all laminate with the drilling rod surface, long screw rod surface screw thread cup joints the knob that is located the surge tank outside, just knob lateral wall contact guide arm.

In this technical scheme, buffer tank top one side is equipped with the slag notch of slope distribution, buffer tank top fixedly connected with is located the water proof dust fall baffle of slag notch top, buffer tank bottom respectively with slope distribution's guide plate and scum pipe fixed connection, scum pipe and guide plate intercommunication, just scum pipe tip rotation is connected with the autogenous pressure formula apron.

In this technical scheme, buffer tank outer wall and handle fixed connection, buffer tank top is equipped with a plurality of gas drainage pipe and negative pressure drainage pipe, every gas drainage pipe and negative pressure drainage pipe are all fixed mounting has the gate valve, buffer tank top still fixedly connected with relief valve.

In this technical scheme, blowdown bottom of the case portion is slope structure and with base fixed connection, blowdown bottom of the case portion one side fixed mounting with the drain of blowdown intercommunication, drain lateral wall rotates and is connected with from pressure formula flip, blowdown top of the case portion still fixed mounting has second gas extraction pipe and bath mouth respectively.

In the technical scheme, the diameters of the two ends of the injection flow pipe are larger than the diameter of the middle part of the injection flow pipe, the two ends and the middle part of the injection flow pipe are fixedly connected with the support, one end, close to the second connecting pipe, of the injection flow pipe is fixedly connected with the air pipe, and the air pipe is communicated with the second connecting pipe through a branch pipe with a valve.

In this technical scheme, first connecting pipe respectively with first gas extraction pipe and drainage tube fixed connection, drainage tube and blow off case one side outer wall intercommunication, the second connecting pipe is through another drainage tube and blow off case opposite side outer wall intercommunication.

On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.

The invention has the positive progress effects that:

the underground drilling blowout prevention and dust removal integrated equipment provided by the invention realizes gas drainage and dust collection treatment by utilizing the Venturi effect, has complete design consideration, strong functions, separate treatment after large-particle coal dust and small-particle coal dust return from holes, energy conservation and environmental protection, good dust collection effect, and can be realized by adopting the design of a drainage dust removal structure and a blowout prevention filtering mechanism, when the gas in the holes is abnormal, the gas in the holes is changed into a closed system at any time to be drained, the success rate of drilling construction is greatly improved, the whole equipment is connected and then becomes a closed system, the overflow of the gas is prevented while dust is reduced, the installation is simple, the installation can be realized by only punching a 1.5m deep drilling hole on the coal wall, the whole installation process can be completed only by half an hour before the construction, meanwhile, the dust collector is small and portable, the labor intensity of workers can be greatly reduced by a single person, large-particle coal dust is discharged from a slag hole of an orifice, on the one hand, fine coal dust is subjected to closed dust suppression in a drainage dust suppression pipe, the dust collection effect is better, the density of coal dust at a lower air inlet of a drilling machine for construction reaches about 20mg/m3 before the dust collection system is actually measured, the density of coal dust can be reduced to about 8mg/m3 after the dust collection system is used, and the orifice separation device, the injection flow dust suppression device and a suction pipeline under the well are reasonably combined together by the aid of the anti-spraying filter mechanism, so that the effective buffering anti-spraying effect is achieved, and the environmental sanitation of a construction site is remarkably improved. In the past, coal dust is accumulated everywhere around a construction site of a bedding hole, and the cleaning is very inconvenient. Although the rear spraying has dust removing effect, the construction site is easy to have water accumulation phenomenon, and the road is difficult to walk. The device is used at present, a large amount of coal dust is treated below the drilling hole, and the working environment of a construction site is effectively improved. The labor intensity of workers is reduced, the working efficiency is improved, the processing cost is low, waste pipes are selected as materials, no special parts are needed, and the equipment and material cost investment is saved.

Drawings

Fig. 1 is a schematic perspective view of the whole structure of the present invention.

Fig. 2 is a schematic perspective view of the orifice separating mechanism of the present invention.

Fig. 3 is a schematic diagram of the front view of the orifice separating mechanism of the present invention.

Fig. 4 is a schematic front view of the orifice separating mechanism of the present invention.

Fig. 5 is a schematic view of a partial enlarged structure at a in fig. 3 according to the present invention.

Fig. 6 is a schematic perspective view of the anti-spray filter mechanism of the present invention.

FIG. 7 is a schematic diagram of the external front view of the blowout prevention filter mechanism of the present invention.

FIG. 8 is a schematic diagram showing the internal front view of the blowout prevention filter mechanism of the present invention.

FIG. 9 is a schematic diagram of a perspective structure of the injection flow dust suppression mechanism of the present invention.

FIG. 10 is a schematic diagram of the front view of the structure of the jet flow dust suppression mechanism of the present invention.

FIG. 11 is a schematic top view of the ejector flow dust suppression mechanism of the present invention.

Description of the reference numerals

100. The device comprises an orifice separating mechanism, 101, a buffer tank, 102, an orifice pipe, 103, a gas drainage port, 104, a coal seam drainage port, 105, a slag discharge port, 106, a limiting ring, 107, a surrounding ring, 108, a filter screen, 109, a notch, 110, a clamping rod, 111, a spring, 200, a blowout prevention filter mechanism, 201, a buffer tank, 202, a slag inlet, 203, a handle, 204, a deflector, 205, a slag discharge pipe, 206, a self-pressing cover plate, 207, a waterproof dust-reducing baffle, 208, a whistle, 209, a negative pressure drainage pipe, 210, a gas drainage pipe, 300, an injection flow dust-removing mechanism, 301, a blow-off tank, 302, a base, 303, a blow-off port, 304, a self-pressing flip, 305, a bracket, 306, an injection flow pipe, 307, a first connecting pipe, 308, a first gas extraction pipe, 309, a drainage pipe, 310, a second connecting pipe, 311, a gas pipe, 312, a coal seam extraction pipe, 313, a butt pipe, 314, a second gas extraction pipe, 315, a flushing port, 400, an insertion pipe, 401, an orifice coil, 402, a long screw, 406, a guide rod, a polyurethane, a rotary joint, a gasket, a 407, a rotary joint, a cushion, a 409, a cushion, and a cushion.

Detailed Description

The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.

As shown in fig. 1 to 11, the downhole drilling blowout prevention and dust removal integrated device comprises:

the hole separating mechanism 100, wherein the hole separating mechanism 100 comprises a buffer box 101, the top of the buffer box 101 is fixedly connected with a gas drainage port 103 and a coal seam drainage port 104 respectively, the bottom of the buffer box 101 is fixedly connected with a slag discharge port 105, and two sides of the buffer box 101 are fixedly connected with a hole pipe 102 and a drill pipe insertion pipe 400 respectively;

the blowout prevention filter mechanism 200 comprises a buffer tank 202, wherein a slag inlet 202 connected with the slag outlet 105 is fixedly arranged on the side wall of the buffer tank 202, and the top of the buffer tank 202 is fixedly connected with a negative pressure drainage pipe 209 and a gas drainage pipe 210 respectively;

the injection flow dust suppression mechanism 300, the injection flow dust suppression mechanism 300 includes a blow-down box 301 and an injection flow pipe 306, the injection flow pipe 306 is fixedly mounted to the top of the blow-down box 301 through a support 305, one end of the injection flow pipe 306 is fixedly connected with a first connecting pipe 307, and the other end of the injection flow pipe 306 is fixedly connected with a second connecting pipe 310 which is obliquely distributed to one side of the injection flow pipe 306.

In this technical scheme, buffer tank 101 top is equipped with gas drainage mouth 103 and two coal seam drainage mouths 104, gas drainage mouth 103 and coal seam drainage mouths 104 are inside all to be equipped with filtration, buffer tank 101 bottom is equipped with the slope bottom surface and communicates with slag discharging port 105, buffer tank 101 both sides outer wall respectively with corresponding distributed drill way pipe 102 and drilling rod insert pipe 400 intercommunication, and the inside drilling rod of drilling rod insert pipe 400 runs through drill way pipe 102 and extends to the coal seam inside.

In this technical scheme, filtration includes spacing ring 106, enclosure 107 and clamping bar 110, spacing ring 106 respectively with gas drainage mouth 103 and the inside fixed connection of coal seam drainage mouth 104, the sealed laminating of spacing ring 106 top surface has enclosure 107, enclosure 107 is inside to be connected with filter screen 108 fixed, just enclosure 107 top edge has seted up the breach 109 that is used for the gomphosis of clamping bar 110, clamping bar 110 respectively with gas drainage mouth 103 and coal seam drainage mouth 104 inner wall rotate and be connected, gas drainage mouth 103 and coal seam drainage mouth 104 inner wall all are connected with clamping bar 110 through spring 111.

In this technical scheme, drilling rod insert tube 400 one end and drill way coil 401 fixed connection, drill way coil 401 comprises two mutually spliced ring flanges, and the second polyurethane pad 409 is installed to the gomphosis between two ring flanges, is close to the diameter of drilling rod insert tube 400 of one end of buffer tank 101 is less than the diameter of its other end, drill way coil 401, drilling rod insert tube 400 and buffer tank 101 all run through with a plurality of evenly distributed's long screw 402 and peg graft, just long screw 402 tip threaded connection has the nut 403 that laminates with drill way coil 401.

In this technical scheme, sleeve pipe 404 that is located drilling rod insert tube 400 inside has been cup jointed in the activity of long screw 402 surface, sleeve pipe 404 one side fixedly connected with drilling rod insert tube 400 runs through the guide arm 405 of pegging graft, guide arm 405 extends to drilling rod insert tube 400 outside, sleeve pipe 404 both sides all are connected with first polyurethane pad 407 through connecting rod 406, first polyurethane pad 407 is arc structure and is located drilling rod insert tube 400 inside, first polyurethane pad 407 and drill way coil 401 lateral wall sliding connection, just first polyurethane pad 407 and second polyurethane pad 409 are all laminated with the drilling rod surface, long screw 402 surface screw thread cup joints the knob 408 that is located the buffer tank 101 outside, just knob 408 lateral wall contact guide arm 405.

In this technical scheme, buffer tank 202 top one side is equipped with the slag notch 202 of slope distribution, buffer tank 202 top fixedly connected with is located the water proof dust fall baffle 207 of slag notch 202 top, buffer tank 202 bottom respectively with slope distribution's guide plate 204 and scum pipe 205 fixed connection, scum pipe 205 communicates with guide plate 204, just scum pipe 205 tip rotation is connected with from pressure formula apron 206.

In this technical scheme, buffer tank 202 outer wall and handle 203 fixed connection, buffer tank 202 top is equipped with a plurality of gas drainage pipe 210 and negative pressure drainage pipe 209, every gas drainage pipe 210 and negative pressure drainage pipe 209 are all fixed mounting has the gate valve, buffer tank 202 top still fixedly connected with relief valve 208.

In this technical scheme, drain 301 bottom is slope structure and with base 302 fixed connection, drain 301 bottom one side fixed mounting with drain 303 of drain 301 intercommunication, drain 303 lateral wall rotates and is connected with from pressure formula flip 304, drain 301 top still is fixed mounting respectively has second gas extraction pipe 314 and bath mouth 315.

In this technical scheme, draw and draw the diameter of flow tube 306 both ends and be greater than its middle part diameter, draw and draw flow tube 306 both ends and middle part and support 305 fixed connection, draw the one end that flow tube 306 is close to second connecting pipe 310 and tracheal 311 fixed connection, tracheal 311 is through with the branch pipe with the valve with second connecting pipe 310 intercommunication.

In this technical solution, the first connection pipe 307 is fixedly connected with the first gas extraction pipe 308 and the drainage pipe 309, the drainage pipe 309 is communicated with the outer wall of one side of the sewage draining box 301, and the second connection pipe 310 is communicated with the outer wall of the other side of the sewage draining box 301 through the other drainage pipe 309.

When the drilling tool is used, before construction, a drilling bit with the diameter of 159mm is used for drilling 1.5m deep, then a drilling tool is put out, meanwhile, a pipeline with the diameter of 146mm with the diameter of 1.5m is put into the hole to serve as an orifice pipe 102, and hole sealing agent is used for fixing the pipe; after the orifice tube 102 is solidified, the orifice separating mechanism 100 is arranged at the front end of the orifice tube 102, a hoop is used for fixing, a drilling tool is replaced by a drill bit of 108mm again, a drill rod inserting hole of the orifice separating mechanism 100 is inserted into a hole, then an orifice coil 401 is arranged at the inserting hole, a wear-resistant second polyurethane pad 409 is attached to the drill rod, after the long screw 402 is fixed by a nut 403, a knob 408 is rotated, the long screw 402 pushes a guide rod 405 and a sleeve 404 to move, and when the connecting rod 406 is pushed to rotate, the first polyurethane pad 407 is driven to move, so that the drill rod is attached to the drill rod, the limiting effect is achieved, and the drill rod is connected with the drill rod on the drilling machine in a butt joint mode;

during construction, large-particle coal powder falls downwards through the slag discharge port 105 and enters the buffer tank 202 of the blowout prevention filter mechanism 200; the two gas drainage ports 103 can be optionally connected with a gas drainage pipe 210 of the blowout prevention filter mechanism 200, the coal dust drainage ports are connected with a coal layer extraction pipe 312 of the injection flow dust suppression device through a 1.5 inch butt joint pipe 313, all the gas drainage ports 103 and the coal layer drainage ports 104 are provided with filter screens 108, and large-particle coal dust is prevented from entering the upper part of a water-proof dust reduction baffle 207 of the buffer tank 202 and the inside of the injection flow dust suppression structure;

the drainage flow dust-removing mechanism 300 is used for absorbing fine coal dust carried out by air pressure in a hole, coal slime water after spraying dust-removing enters the closed sewage tank 301 through the drainage pipe 309 and flows out of the sewage outlet 303, the sewage tank 301 and the jet pipe are respectively provided with a second gas extraction pipe 314 and a first gas extraction pipe 308, and the gas carried in the coal dust is pumped into the buffer tank 202 while dust is removed;

when the coal layer extracting pipe 312 of the injection flow dust suppression mechanism 300 is connected with the coal dust extracting port of the orifice separating mechanism 100, a stop valve of the air pipe 311 is opened, the air flow forms negative pressure suction in the injection flow pipe 306 by utilizing the venturi jet flow principle, the fine coal dust of the orifice is sucked into the injection flow pipe 306 by matching with the negative pressure of the first gas extracting pipe 308, then the internal spraying is opened, and the sucked coal dust is changed into coal slime water to enter the blow-down tank 301 through the drainage pipe 309;

in the seam bedding drilling construction process, the phenomenon that when gas in holes is gathered to cause sudden spraying holes or a large amount of gas is gushed out often occurs, after the situation occurs, drilling cannot be continued, even the danger of gas overrun is caused, and the first gas extraction pipe 308 designed by the injection flow dust suppression mechanism 300 is designed to solve the problem.

When the spraying hole phenomenon occurs, the second gas extraction pipe 314 of the drainage dust suppression mechanism 300 is connected to the buffer tank 202 of the anti-spraying filter mechanism 200, the gate valve of the second gas extraction pipe 314 is quickly opened, the self-pressure flip 304 is closed, the gas in the hole starts to be rapidly extracted through the negative pressure of the pipeline of the underground gas drainage system, so that overrun is prevented, and after the gas pressure is released for a period of time, the machine is started to drill continuously.

The present invention is not limited to the above-described embodiments, and any changes in shape or structure thereof are within the scope of the present invention. The scope of the present invention is defined by the appended claims, and those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and spirit of the present invention, but these changes and modifications fall within the scope of the present invention.

Claims (10)

1. The utility model provides a drilling blowout prevention dust removal integration equipment in pit, its characterized in that, blowout prevention dust removal integration equipment includes:

the hole separating mechanism (100), the hole separating mechanism (100) comprises a buffer box (101), the top of the buffer box (101) is fixedly connected with a gas drainage port (103) and a coal seam drainage port (104) respectively, the bottom of the buffer box (101) is fixedly connected with a slag discharge port (105), and two sides of the buffer box (101) are fixedly connected with a hole pipe (102) and a drill pipe inserting pipe (400) respectively;

the anti-spraying filtering mechanism (200), the anti-spraying filtering mechanism (200) comprises a buffer tank (202), a slag inlet (202) connected with a slag outlet (105) is fixedly arranged on the side wall of the buffer tank (202), and the top of the buffer tank (202) is fixedly connected with a negative pressure drainage pipe (209) and a gas drainage pipe (210) respectively;

draw efflux dust suppression mechanism (300), draw and flow dust suppression mechanism (300) including blow off case (301) and draw and flow tube (306), draw and flow tube (306) through support (305) fixed mounting to blow off case (301) top, draw and flow tube (306) one end and first connecting pipe (307) fixed connection, draw and flow tube (306) other end fixedly connected with slope distribute to draw second connecting pipe (310) of flow tube (306) one side.

2. The downhole drilling blowout prevention and dust removal integrated equipment as set forth in claim 1, wherein: the gas drainage device is characterized in that a gas drainage port (103) and two coal seam drainage ports (104) are formed in the top of the buffer box (101), filtering structures are arranged inside the gas drainage port (103) and the coal seam drainage ports (104), an inclined bottom surface is arranged at the bottom of the buffer box (101) and communicated with a slag discharge port (105), two side outer walls of the buffer box (101) are respectively communicated with a corresponding distributed orifice pipe (102) and a drill rod insertion pipe (400), and drill rods inside the drill rod insertion pipe (400) penetrate through the orifice pipe (102) and extend to the inside of the coal seam.

3. The downhole drilling blowout prevention and dust removal integrated equipment as set forth in claim 2, wherein: the utility model discloses a filter structure, including spacing ring (106), enclosure (107) and clamping bar (110), spacing ring (106) are respectively with gas drainage mouth (103) and coal seam drainage mouth (104) inside fixed connection, the sealed laminating of spacing ring (106) top surface has enclosure (107), enclosure (107) inside and filter screen (108) fixed connection, just be used for clamping bar (110) gomphosis breach (109) are seted up at enclosure (107) top edge, clamping bar (110) are respectively with gas drainage mouth (103) and coal seam drainage mouth (104) inner wall rotation connection, gas drainage mouth (103) and coal seam drainage mouth (104) inner wall all are connected with clamping bar (110) through spring (111).

4. The downhole drilling blowout prevention and dust removal integrated equipment as set forth in claim 1, wherein: drill rod insert pipe (400) one end and drill way coil pipe (401) fixed connection, drill way coil pipe (401) comprise two mutually spliced ring flanges, and second polyurethane pad (409) are installed to the gomphosis between two ring flanges, be close to the diameter of drill rod insert pipe (400) of the one end of buffer tank (101) is less than the diameter of its other end, drill way coil pipe (401), drill rod insert pipe (400) and buffer tank (101) all run through with a plurality of evenly distributed's long screw rod (402) and peg graft, just long screw rod (402) tip threaded connection has nut (403) with the laminating of drill way coil pipe (401).

5. The downhole drilling blowout prevention and dust removal integrated equipment as set forth in claim 4, wherein: the long screw rod (402) surface activity has cup jointed sleeve pipe (404) that are located drilling rod insert tube (400) inside, sleeve pipe (404) one side fixedly connected with drilling rod insert tube (400) runs through guide arm (405) of pegging graft, guide arm (405) extend to drilling rod insert tube (400) outside, sleeve pipe (404) both sides are connected with first polyurethane pad (407) through connecting rod (406), first polyurethane pad (407) are arc structure and are located drilling rod insert tube (400) inside, first polyurethane pad (407) and drill way coil pipe (401) lateral wall sliding connection, just first polyurethane pad (407) and second polyurethane pad (409) are all laminated with the drilling rod surface, long screw rod (402) surface screw thread cup joints knob (408) that are located buffer tank (101) outside, just knob (408) lateral wall contact guide arm (405).

6. The downhole drilling blowout prevention and dust removal integrated equipment as set forth in claim 1, wherein: the slag inlet (202) of slope distribution is arranged on one side of the top of the buffer tank (202), the top of the buffer tank (202) is fixedly connected with a waterproof dust-reducing baffle (207) arranged above the slag inlet (202), the bottom of the buffer tank (202) is fixedly connected with a guide plate (204) and a slag discharge pipe (205) of slope distribution respectively, the slag discharge pipe (205) is communicated with the guide plate (204), and the end part of the slag discharge pipe (205) is rotationally connected with a self-pressing cover plate (206).

7. The downhole drilling blowout prevention and dust removal integrated equipment as set forth in claim 6, wherein: the outer wall of the buffer tank (202) is fixedly connected with the handle (203), a plurality of gas drainage pipes (210) and negative pressure drainage pipes (209) are arranged at the top of the buffer tank (202), gate valves are fixedly installed on the gas drainage pipes (210) and the negative pressure drainage pipes (209), and a pressure release valve (208) is fixedly connected to the top of the buffer tank (202).

8. The downhole drilling blowout prevention and dust removal integrated equipment as set forth in claim 1, wherein: the bottom of the blow-down box (301) is of an inclined structure and is fixedly connected with the base (302), a blow-down outlet (303) communicated with the blow-down box (301) is fixedly arranged on one side of the bottom of the blow-down box (301), a self-pressing flip (304) is rotatably connected to the side wall of the blow-down outlet (303), and a second gas extraction pipe (314) and a flushing port (315) are fixedly arranged at the top of the blow-down box (301) respectively.

9. The downhole drilling blowout prevention and dust removal integrated equipment as set forth in claim 1, wherein: the diameter of two ends of the injection flow pipe (306) is larger than the diameter of the middle part of the injection flow pipe, the two ends and the middle part of the injection flow pipe (306) are fixedly connected with the support (305), one end, close to the second connecting pipe (310), of the injection flow pipe (306) is fixedly connected with the air pipe (311), and the air pipe (311) is communicated with the second connecting pipe (310) through a branch pipe with a valve.

10. The downhole drilling blowout prevention and dust removal integrated equipment as set forth in claim 1, wherein: the first connecting pipe (307) is fixedly connected with the first gas extraction pipe (308) and the drainage pipe (309) respectively, the drainage pipe (309) is communicated with the outer wall of one side of the sewage disposal box (301), and the second connecting pipe (310) is communicated with the outer wall of the other side of the sewage disposal box (301) through the other drainage pipe (309).