Blowout prevention and automatic slag discharge device and method for mining drilling

Abstract

The invention relates to the technical field of drilling equipment, and discloses a mining drilling blowout prevention automatic deslagging device and method. The mining drilling blowout prevention automatic slag discharging device comprises a blowout prevention module, a drainage module, a slag storage module and a transportation module which are sequentially connected in a sealed mode. A blowout prevention cavity of the blowout prevention module is provided with a drill outlet pipe inserted into a drill hole, a gas separation hole and a drill cutting separation hole, and the gas separation hole is connected with a coal mine negative pressure pipe. A slag storage cavity of the slag storage module is provided with a slag inlet and a spiral conveying inlet pipeline, the spiral conveying inlet pipeline is matched with the bottom of the slag storage cavity in size, and the spiral conveying inlet pipeline is fixed to the wall of the slag storage cavity through a limiting hoop; a spiral conveying pipeline of the conveying module is connected with a spiral conveying inlet pipeline, and a motor of a spiral conveying pipeline power assembly drives a spiral blade. By combining the blowout prevention module, the drainage module, the slag storage module and the transportation module, automatic separation of drilling cuttings and gas in coal mine drilling construction and automatic transfer between the drilling cuttings and mainstream equipment are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of drilling equipment, and in particular to an automatic slag removal device and method for preventing blowout of mining boreholes. Background Art

[0002] With the continuous improvement of science and technology, the safety of coal mines has been steadily improving, but major safety accidents in coal mines have occurred from time to time. Over the years, gas disaster management has formed two sets of "four-in-one" management systems, regional and local. Drilling construction almost runs through regional and local outburst hazard prediction, outburst prevention and control, and effect inspection. In order to prevent coal, rock and gas from erupting and injuring construction workers during drilling construction, it is necessary to add a blowout prevention device to separate drill cuttings and gas orifices.

[0003] At present, the separated drill cuttings are only transported manually to the main transportation equipment of coal mines such as belt conveyors, scraper conveyors, and mine cars, which is labor-intensive and inefficient. The main transportation system of underground coal mines is mainly belt conveyors and scraper conveyors, and auxiliary transportation is divided into tracked and trackless. During the layout and operation of the tunnel, these transportation equipment need to maintain a sufficient safety distance from both sides of the tunnel to avoid hitting the tunnel surrounding rock or deformation and extrusion of the tunnel, which affects its stability. In addition, after the transportation routes of these transportation equipment are fixed, it is troublesome to change them later. However, the drilling holes are constructed close to the tunnel wall or the top and bottom plates, and the drill cuttings are basically piled up near the periphery of the tunnel, making it difficult to automatically stack the drill cuttings on the mining transportation equipment. In addition, the space between the drilling holes fluctuates greatly. Due to its fixed nature, the mining transportation equipment is difficult to change with the changes in the construction positions of different drilling holes, and it is even more difficult to realize the automatic stacking of drill cuttings on the mining transportation equipment.

[0004] Therefore, there is an urgent need for an automatic slag discharge device for mine drilling blowout prevention, which can fill the gap in automated transportation between the drill cuttings separated by the blowout prevention device and the mainstream mining equipment, reduce manual labor intensity, and achieve efficient transportation of drill cuttings. Summary of the invention

[0005] The present invention aims to provide an automatic slag discharge device and method for mine drilling blowout prevention, which combines a blowout prevention module, a drainage module, a slag storage module and a transportation module to achieve automatic separation of drill cuttings and gas in coal mine drilling construction, as well as automatic transfer between drill cuttings and mainstream equipment.

[0006] In order to achieve the above object, the present invention adopts the following technical scheme:

[0007] A mine drilling blowout prevention and automatic slag discharge device, comprising: a blowout prevention module, a drainage module, a slag storage module and a transportation module which are sequentially connected and sealed;

[0008] The blowout prevention module comprises a blowout prevention chamber, wherein the blowout prevention chamber is respectively fixedly connected with a drill inlet pipe and a drill outlet pipe on two chamber walls on the same axis, wherein the drill outlet pipe is used to be inserted into a borehole, and the drill outlet pipe fits the borehole; the blowout prevention chamber is also provided with a gas separation hole and a drill cuttings separation hole in parallel, wherein the gas separation hole is connected with a coal mine negative pressure pipe;

[0009] The slag storage module comprises a slag storage chamber, the slag storage chamber is provided with a slag inlet and a spiral transport inlet pipe, the size of the spiral transport inlet pipe is adapted to the bottom of the slag storage chamber, and the spiral transport inlet pipe is fixed to the wall of the slag storage chamber by a limiting clamp;

[0010] The transport module includes a spiral transport pipeline, a spiral transport pipeline power component and a spiral transport slag discharge outlet. The spiral transport pipeline is fixedly connected to a spiral transport inlet pipeline. The spiral transport pipeline power component includes a motor. The rotating part of the motor is connected to a spiral blade. The spiral blade is arranged along the spiral transport pipeline and the spiral transport inlet pipeline. The spiral transport slag discharge outlet is fixedly sleeved on the end pipe of the spiral transport pipeline. The spiral transport slag discharge outlet is also provided with a limit stopper.

[0011] The principles and advantages of this solution are: in actual application, the blowout prevention module, drainage module, slag storage module and transportation module are closed and connected in sequence, which is convenient for avoiding dust during the slag transportation process and reducing harm to the human body. The drill rig is transmitted from the inlet pipe of the blowout prevention module to the outlet pipe, and the outlet pipe is inserted into the borehole. The outlet pipe fits the borehole to ensure sealing and prevent the gas and drill cuttings in the borehole from being directly sprayed out; the gas separation hole draws the gas escaping from the borehole into the extraction pipeline under the action of negative pressure to achieve gas-solid separation; the drill cuttings separation hole is used to guide the drill cuttings into the subsequent drainage module, and the drainage module is responsible for guiding the drill cuttings separated from the blowout prevention module to the slag storage module to avoid blockage or secondary pollution. The slag storage chamber is used to temporarily store the drill cuttings discharged from the borehole. The spiral transport inlet pipe is fixed to the wall of the slag storage chamber by a limit clamp to ensure that the drill cuttings can enter the transportation module smoothly. The spiral transport pipeline utilizes the rotational movement of the spiral blades driven by the motor. The spiral blades are arranged along the spiral transport pipeline and the spiral transport inlet pipeline. The spiral blades drive the drill cuttings to produce relative movement along the spiral surface. The friction force on the drill cuttings does not rotate with the spiral, thereby pushing the drill cuttings axially, realizing the transportation of the drill cuttings from the spiral transport inlet pipeline to the spiral transport pipeline, and then to the spiral transport slag outlet. The spiral transport slag outlet is provided with a limit bayonet, which is convenient for fixing the limit bayonet on any coal mine transportation device, thereby realizing the automatic transfer of drill cuttings and the mainstream transportation equipment of the coal mine, and ensuring the stability and reliability of the slag discharge process. The spiral transport system of the present application realizes the automatic collection and transportation of drill cuttings without manual intervention, greatly reducing the labor intensity. The continuous rotation movement of the spiral blades ensures the smooth transportation of drill cuttings and avoids the blockage problem in the traditional slag discharge method. The modules are closed and connected, which is convenient for installation, disassembly and maintenance. The modular structure can be flexibly adjusted according to actual needs to adapt to different working conditions and drilling conditions. It can operate in narrow lanes and change with different drilling construction positions.

[0012] Preferably, as an improvement, the spiral transport inlet pipe is placed obliquely along the bottom of the slag storage chamber.

[0013] Technical effect: It is convenient for drill cuttings to better adhere to the spiral transport inlet pipeline.

[0014] Preferably, as an improvement, the bottom of the spiral transport inlet pipe is a mesh structure shell.

[0015] Technical effect: It is convenient for filtering and treating water in water-containing drill cuttings.

[0016] Preferably, as an improvement, the drainage module is made of cloth bag material.

[0017] Technical effect: It has good ductility and is easy to adapt to the drainage of different installation angles of the blowout prevention module and the slag storage module.

[0018] Preferably, as an improvement, the interior of the blowout prevention chamber is a trapezoidal spatial structure that is wider at the top and narrower at the bottom.

[0019] Technical effect: Avoid the accumulation of drill cuttings in the cavity.

[0020] Preferably, as an improvement, the blowout prevention chamber is further provided with a water inlet 1.

[0021] Technical effect: can realize dust removal at the hole mouth.

[0022] Preferably, as an improvement, the slag storage chamber is a wedge-shaped structure that is wider at the top and narrower at the bottom.

[0023] Technical effect: Avoid drilling cuttings from accumulating at the bottom of the slag storage chamber and ensure that the drilling cuttings are collected in the spiral transport inlet pipe.

[0024] Preferably, as an improvement, a water outlet is provided at the bottom of the slag storage chamber.

[0025] Technical effect: It is convenient to discharge the water filtered from the water-containing drill cuttings out of the slag storage cavity.

[0026] Preferably, as an improvement, the spiral transport slag discharge outlet is further provided with a second water inlet, and the inner wall of the spiral transport slag discharge outlet is further provided with a water sprayer, and the water sprayer is connected to the water inlet.

[0027] Technical effect: It is easy to achieve dust reduction of drill cuttings.

[0028] The present application also includes a method for using the automatic slag discharge device for preventing blowout in mining drilling, comprising:

[0029] S1, install the blowout prevention module, pass the drill rod and drill bit of the drilling rig through the drill inlet pipe of the blowout prevention module to the drill outlet pipe, insert the drill outlet pipe into the borehole, and make the drill outlet pipe fit the borehole; fix the limit bayonet on the coal mine transportation device;

[0030] S2, connect the explosion-proof cable and control the motor to start through the control switch;

[0031] S3, gas-slag separation is performed through the blowout prevention module, the drill cuttings are introduced into the slag storage module through the drainage module, the motor drives the spiral blade to rotate, the spiral blade drives the drill cuttings to move relative to the spiral surface, and the drill cuttings in the slag storage module are transported to the slag discharge outlet through the spiral transport pipeline;

[0032] S4, the control switch controls the motor to shut down and disconnect the explosion-proof cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a structural schematic diagram of an automatic slag discharge device for preventing blowout in mining drilling;

[0034] Figure 2It is a front view schematic diagram of the blowout prevention module structure of a mine drilling blowout prevention and automatic slag discharge device;

[0035] Figure 3 It is a schematic side view of the blowout prevention module structure of a mine drilling blowout prevention and automatic slag discharge device;

[0036] Figure 4 This is a front view schematic diagram of the slag storage module structure of a mine drilling blowout prevention and automatic slag discharge device;

[0037] Figure 5 It is a schematic side view of the slag storage module structure of a mine drilling blowout prevention and automatic slag discharge device;

[0038] Figure 6 Schematic diagram of the transport module structure of a mine drilling blowout prevention automatic slag discharge device Figure 1 ;

[0039] Figure 7 Schematic diagram of the transport module structure of a mine drilling blowout prevention automatic slag discharge device Figure 2 ;

[0040] Figure 8 Schematic diagram of the transport module structure of a mine drilling blowout prevention automatic slag discharge device Figure 3 . DETAILED DESCRIPTION

[0041] The following is further described in detail through specific implementation methods:

[0042] The figure marks in the drawings of the specification include: blowout prevention module 1, drainage module 2, slag storage module 3, spiral transport pipeline 4, spiral transport pipeline power assembly 5, gas separation hole 11, drill inlet pipe 12, drill outlet pipe 13, drill cuttings separation hole 14, blowout prevention chamber 15, water inlet 16, slag inlet 31, limit clamp 32, water outlet 33, spiral transport inlet pipeline 34, slag storage chamber 35, spiral blade 51, spiral transport slag discharge outlet 52, limit clamp 53, water inlet 2 54, motor 55, explosion-proof cable 56, control switch 57, sprinkler 58.

[0043] The embodiment is basically as shown in the attached Figure 1 As shown:

[0044] A mine drilling blowout prevention and automatic slag discharge device comprises a blowout prevention module 1, a drainage module 2, a slag storage module 3 and a transportation module which are closed and connected in sequence. The closed connection facilitates the avoidance of dust during the slag transfer process. The entire slag discharge and transfer process is carried out in a closed space, thereby reducing the harm of pneumoconiosis caused by drill cuttings dust to people.

[0045] like Figure 2 and Figure 3As shown, the blowout prevention module 1 includes a blowout prevention chamber 15, the interior of the blowout prevention chamber 15 is a trapezoidal space structure that is wide at the top and narrow at the bottom, so that drill cuttings after gas-slag separation can automatically fall to the drainage module 2, effectively avoiding the accumulation of drill cuttings in the chamber.

[0046] The blowout prevention chamber 15 is respectively fixedly connected with a drill inlet pipe 12 and a drill outlet pipe 13 on two chamber walls on the same axis. Before the coal mine drilling construction, the blowout prevention module 1 is first installed, and the drill rod and drill bit of the drilling rig are passed through the drill inlet pipe 12 of the blowout prevention module 1 to the drill outlet pipe 13, and the drill outlet pipe 13 is inserted into the borehole. The drill outlet pipe 13 fits the borehole to prevent drilling cuttings, dust and gas from overflowing from the gap between the hole wall and the drill outlet pipe 13.

[0047] The blowout prevention chamber 15 is also provided with a gas separation hole 11 and a drill cutting separation hole 14 in parallel, the gas separation hole 11 is connected to the coal mine negative pressure pipe, and the negative pressure pipe is negatively pressurized. The drill cutting separation hole 14 is connected to the drainage module 2. In this embodiment, the drainage module 2 is preferably made of bag material to facilitate drainage at different installation angles of the blowout prevention module 1 and the slag storage module 3.

[0048] The anti-blowout cavity 15 is also provided with a water inlet 16, and the water inlet 16 is located close to the top of the anti-blowout cavity 15 to facilitate dust removal at the hole.

[0049] After the blowout prevention module 1 is installed, drilling construction begins. During the drilling process, the gas from the borehole passes through the drill pipe 13 and then to the blowout prevention chamber 15. Under the action of negative gas pressure, it enters the extraction pipeline through the gas separation hole 11. The drilling cuttings pass through the drill pipe 13 to the blowout prevention chamber 15, and then fall into the drainage module 2. The drainage module 2 is responsible for guiding the drill cuttings separated from the blowout prevention module 1 to the slag storage module 3 to avoid blockage or secondary pollution.

[0050] like Figure 4 and Figure 5 As shown, the slag storage module 3 includes a slag storage chamber 35, and the slag storage chamber 35 is provided with a slag inlet 31 and a spiral transport inlet pipe 34. The slag inlet 31 is connected to the drainage module 2, and the spiral transport inlet pipe 34 is fixed to the wall of the slag storage chamber 35 by a limiting clamp 32; the slag storage chamber 35 is used to temporarily store drill cuttings discharged from the drill hole, and the slag storage chamber 35 is a wedge-shaped structure that is wide at the top and narrow at the bottom. The size of the spiral transport inlet pipe 34 is adapted to the bottom of the slag storage chamber 35, and the spiral transport inlet pipe 34 is tilted along the bottom of the slag storage chamber 35, so that the drill cuttings can better adhere to the spiral transport inlet pipe 34, and can avoid the drill cuttings from accumulating at the bottom of the slag storage chamber 35, ensuring that the drill cuttings are gathered in the spiral transport inlet pipe 34.

[0051] The bottom of the spiral transport inlet pipe 34 is a mesh structure shell, which is convenient for filtering water in the water-containing drill cuttings. The bottom of the slag storage chamber 35 is provided with a water outlet 33, and water is collected at the bottom of the slag storage chamber 35 and flows out through the water outlet 33.

[0052] The drill cuttings in the slag storage chamber 35 are transported to any mainstream equipment in the coal mine through the transport module, realizing automatic slag discharge and transportation of drilling holes. Figure 6 to Figure 8 As shown, the transport module includes a spiral transport pipeline 4, a spiral transport pipeline power assembly 5 and a spiral transport slag discharge outlet 52, and the spiral transport pipeline 4 is fixedly connected to the spiral transport inlet pipeline 34; the spiral transport pipeline power assembly 5 includes a motor 55, a control switch 57 and an explosion-proof cable 56, the control switch 57 is used to control the opening and closing of the motor 55, the explosion-proof cable 56 is connected to the motor 55, and after the explosion-proof cable 56 is powered, the motor 55 is controlled to operate by the control switch 57, the rotating part of the motor 55 is connected to the spiral blade 51, and the motor 55 drives the spiral blade 51 to rotate, and the spiral blade 51 is arranged along the spiral transport pipeline 4 and the spiral transport inlet pipeline 34, and the spiral transport slag discharge outlet 52 is fixedly sleeved at the end pipeline of the spiral transport pipeline 4, and the spiral blade 51 drives the drill cuttings to produce relative movement along the spiral surface, and the friction force on the drill cuttings does not rotate with the spiral, thereby pushing the drill cuttings axially, realizing the transportation of the drill cuttings from the spiral transport inlet pipeline 34 to the spiral transport pipeline 4, and then to the spiral transport slag discharge outlet 52.

[0053] The spiral transport slag discharge outlet 52 is also provided with a limit stopper 53, which can be fixed on any coal mine transportation device, thereby realizing the automatic transfer of drill cuttings and the mainstream coal mine transportation equipment, while ensuring that the slag discharge process is stable and reliable.

[0054] The spiral transport slag discharge outlet 52 is also provided with a second water inlet 54, and the inner wall of the spiral transport slag discharge outlet 52 is also provided with a water sprinkler 58, the water sprinkler 58 is connected to the water inlet, and the second water inlet 54 can be connected to a water pipe to inject water into the water sprinkler 58, thereby achieving dust reduction of drill cuttings.

[0055] Also included is a method for using the automatic slag discharge device for preventing blowout in mining drilling, comprising:

[0056] S1, install the blowout prevention module, pass the drill rod and drill bit of the drilling rig through the drill inlet pipe of the blowout prevention module to the drill outlet pipe, insert the drill outlet pipe into the borehole, and make the drill outlet pipe fit the borehole; fix the limit bayonet on the coal mine transportation device;

[0057] S2, connect the explosion-proof cable and control the motor to start through the control switch;

[0058] S3, gas-slag separation is performed through the blowout prevention module, the drill cuttings are introduced into the slag storage module through the drainage module, the motor drives the spiral blade to rotate, the spiral blade drives the drill cuttings to move relative to the spiral surface, and the drill cuttings in the slag storage module are transported to the slag discharge outlet through the spiral transport pipeline;

[0059] S4, the control switch controls the motor to shut down and disconnect the explosion-proof cable.

[0060] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A mining drilling blowout prevention automatic slag discharge device, characterized in that: include: The blowout prevention module, drainage module, slag storage module and transportation module are closed and connected in sequence; The blowout prevention module comprises a blowout prevention chamber, wherein the blowout prevention chamber is respectively fixedly connected with a drill inlet pipe and a drill outlet pipe on two chamber walls on the same axis, wherein the drill outlet pipe is used to be inserted into a borehole, and the drill outlet pipe fits the borehole; the blowout prevention chamber is also provided with a gas separation hole and a drill cuttings separation hole in parallel, wherein the gas separation hole is connected with a coal mine negative pressure pipe; The slag storage module comprises a slag storage chamber, the slag storage chamber is provided with a slag inlet and a spiral transport inlet pipe, the size of the spiral transport inlet pipe is adapted to the bottom of the slag storage chamber, and the spiral transport inlet pipe is fixed to the wall of the slag storage chamber by a limiting clamp; The transport module includes a spiral transport pipeline, a spiral transport pipeline power component and a spiral transport slag discharge outlet. The spiral transport pipeline is fixedly connected to a spiral transport inlet pipeline. The spiral transport pipeline power component includes a motor. The rotating part of the motor is connected to a spiral blade. The spiral blade is arranged along the spiral transport pipeline and the spiral transport inlet pipeline. The spiral transport slag discharge outlet is fixedly sleeved on the end pipe of the spiral transport pipeline. The spiral transport slag discharge outlet is also provided with a limit stopper.

2. The automatic slag discharge device for preventing blowout in mining drilling according to claim 1 is characterized by: The spiral transport inlet pipe is placed obliquely along the bottom of the slag storage chamber.

3. The automatic slag discharge device for preventing blowout during drilling in mines according to claim 1 is characterized by: The bottom of the spiral transport inlet pipe is a mesh structure shell.

4. The automatic slag discharge device for preventing blowout in mining drilling according to claim 1 is characterized by: The drainage module is made of cloth bag material.

5. The automatic slag discharge device for preventing blowout during drilling in mines according to claim 1 is characterized by: The interior of the blowout prevention cavity is a trapezoidal space structure that is wide at the top and narrow at the bottom.

6. The automatic slag discharge device for preventing blowout during drilling in mines according to claim 1 is characterized by: The anti-blowout chamber is also provided with a water inlet 1.

7. The automatic slag removal device for preventing blowout during drilling in mines according to claim 1 is characterized by: The slag storage chamber is a wedge-shaped structure that is wide at the top and narrow at the bottom.

8. The automatic slag removal device for preventing blowout during drilling in mines according to claim 1 is characterized by: A water outlet is arranged at the bottom of the slag storage chamber.

9. The automatic slag discharge device for preventing blowout during drilling in mines according to claim 1 is characterized by: The spiral transport slag discharge outlet is also provided with a second water inlet, and the inner wall of the spiral transport slag discharge outlet is also provided with a water sprayer, which is connected to the water inlet.

10. A method for using the automatic slag discharge device for preventing blowout in mining drilling according to any one of claims 1 to 9, characterized in that: include: S1, install the blowout prevention module, pass the drill rod and drill bit of the drilling rig through the drill inlet pipe of the blowout prevention module to the drill outlet pipe, insert the drill outlet pipe into the borehole, and make the drill outlet pipe fit the borehole; fix the limit bayonet on the coal mine transportation device; S2, connect the explosion-proof cable and control the motor to start through the control switch; S3, gas-slag separation is performed through the blowout prevention module, the drill cuttings are introduced into the slag storage module through the drainage module, the motor drives the spiral blade to rotate, the spiral blade drives the drill cuttings to move relative to the spiral surface, and the drill cuttings in the slag storage module are transported to the slag discharge outlet through the spiral transport pipeline; S4, the control switch controls the motor to shut down and disconnect the explosion-proof cable.

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