Orifice dust removal device for coal mine

Abstract

The utility model provides an orifice dust removal device for a coal mine. The orifice dust removal device for the coal mine comprises a blowout prevention device, a first dust suction pipe, a second dust suction pipe and a dust removal mechanism. The blowout prevention device is installed on the coal wall, the dust outlet pipe is installed at the top of the blowout prevention device, the slag discharge pipe is installed at the bottom of the blowout prevention device, the first dust suction pipe and the second dust suction pipe are arranged on the dust outlet pipe and the slag discharge pipe in a communicated mode respectively, and the dust outlet device is arranged at the tail end of the first dust suction pipe and the tail end of the second dust suction pipe in a communicated mode. In the using process, negative pressure can be generated in the first dust suction pipe and the second dust suction pipe through the dust outlet device, and therefore dust in the dust outlet pipe and the slag discharging pipe can be extracted at the same time. By arranging the first dust suction pipe and the second dust suction pipe, dust in the dustproof device can be extracted, meanwhile, dust in the deslagging process can be extracted, and the field working environment in the operation process is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mining equipment, and in particular relates to an orifice dust removal device for coal mines. Background Art

[0002] During the production process of coal mines, high-pressure air is used as a medium for slag removal and hole washing in the construction of gas extraction drilling and coal seam water injection drilling, which will generate a lot of dust. The drilling operation has become an important dust source in coal mines. The current orifice dust collector has leakage and blockage due to structural problems, and the dust removal rate is low and the effect is not ideal. These dusts are diffused in the air with the wind flow, seriously affecting the health of the workers and the safety of production in the coal mine. At present, it is usually adopted to install a dust extraction pipe inside the blowout preventer to extract the internal dust into the dust collector. However, the blowout preventer will also generate dust during the slag removal process, and the dust is easy to overflow from the slag discharge port, causing pollution to the working environment. Utility Model Content

[0003] The embodiment of the utility model provides a hole dust removal device for coal mines, aiming to solve the problem that the hole dust removal mechanism in the prior art has poor dust removal effect and affects the on-site construction environment.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a dust removal device for a coal mine, comprising:

[0005] A blowout prevention device is installed on the coal wall, the top of the blowout prevention device is connected to a dust outlet pipe, and the bottom of the blowout prevention device is provided with a slag discharge pipe;

[0006] A first dust suction pipe, connected to the dust outlet pipe;

[0007] A second dust suction pipe is installed in the middle of the slag discharge pipe and is connected to the slag discharge pipe;

[0008] The dust removal mechanism is installed at the discharge ends of the first dust suction pipe and the second dust suction pipe, and is used to extract dust inside the first dust suction pipe and the second dust suction pipe.

[0009] In a possible implementation, a dust inlet pipe is provided at the feed end of the second dust suction pipe, the dust inlet pipe is connected to the slag discharge pipe, and the dust inlet pipe is inclined upward in a direction away from the slag discharge pipe.

[0010] In a possible implementation, a material guide pipe is installed inside the slag discharge pipe, the slag discharge pipe and the material guide pipe are spaced apart, and the top of the material guide pipe is fixedly connected to the inner wall of the slag discharge pipe, and the dust inlet pipe is connected between the material guide pipe and the slag discharge pipe.

[0011] In a possible implementation, a conical tube is fixedly mounted on the top of the material guide tube, and one end of the conical tube is fixedly mounted on the inner wall of the slag discharge tube.

[0012] In a possible implementation, the dust removal mechanism includes:

[0013] Aggregate box;

[0014] There are two dust removal pipes, the first dust suction pipe and the second dust suction pipe are respectively connected in the middle of the two dust removal pipes, and one end of the dust removal pipe is connected to the collection box;

[0015] An air inlet pipe, connected to an end of the dust removal pipe away from the collecting box, and used for conveying gas into the dust removal pipe;

[0016] A water inlet pipe is connected to the middle portion of the air inlet pipe and is used for conveying liquid into the air inlet pipe.

[0017] In a possible implementation, a side wall of the collecting box away from the dust removal pipe is inclined in a vertical direction, and a distance between the side wall and the dust removal pipe gradually decreases from top to bottom.

[0018] In a possible implementation, a discharge port is provided at one side of the bottom of the material collection box, a baffle is hingedly provided at the discharge port, and a top of the baffle is hingedly provided on the material collection box.

[0019] In a possible implementation, the top of the aggregate box is also connected to an exhaust pipe for discharging gas.

[0020] Compared with the prior art, the solution shown in the embodiment of the present application is that a blowout prevention device is installed on the coal wall, a dust outlet pipe is installed on the top of the blowout prevention device, a slag discharge pipe is installed on the bottom of the blowout prevention device, a first dust suction pipe and a second dust suction pipe are connected to the dust outlet pipe and the slag discharge pipe respectively, and a dust outlet device is connected to the tail end of the first dust suction pipe and the second dust suction pipe. When in use, the dust outlet device can generate negative pressure inside the first dust suction pipe and the second dust suction pipe, so that the dust inside the dust outlet pipe and the slag discharge pipe can be extracted at the same time and transported to the dust removal mechanism for dust reduction treatment. Through the provision of the first dust suction pipe and the second dust suction pipe, the present application can extract the dust inside the dust prevention device and the dust in the slag discharge process at the same time, effectively improving the on-site working environment during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a coal mine orifice dust removal device provided by an embodiment of the utility model;

[0022] Figure 2A schematic diagram of the connection structure between the dust inlet pipe and the slag discharge pipe provided in an embodiment of the utility model;

[0023] Figure 3 A schematic structural diagram of a dust removal mechanism provided in an embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 1. Blowout prevention device; 11. Dust outlet pipe; 12. Slag discharge pipe; 2. First dust suction pipe; 3. Second dust suction pipe; 31. Dust inlet pipe; 4. Dust removal mechanism; 41. Collecting box; 411. Exhaust pipe; 42. Dust removal pipe; 421. Air inlet pipe; 422. Water inlet pipe; 43. Baffle; 5. Material guide pipe; 51. Conical pipe. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] Please also read Figures 1 to 3 , the orifice dust removal device for coal mines provided by the utility model is now described. The orifice dust removal device for coal mines comprises a blowout prevention device 1, a first dust suction pipe 2, a second dust suction pipe 3 and a dust removal mechanism 4. The blowout prevention device 1 is installed on the coal wall, the top of the blowout prevention device 1 is connected to a dust outlet pipe 11, and the bottom of the blowout prevention device 1 is provided with a slag discharge pipe 12; the first dust suction pipe 2 is connected to the dust outlet pipe 11; the second dust suction pipe 3 is installed in the middle of the slag discharge pipe 12 and is connected to the slag discharge pipe 12; the dust removal mechanism 4 is installed at the discharge ends of the first dust suction pipe 2 and the second dust suction pipe 3, and is used to extract dust inside the first dust suction pipe 2 and the second dust suction pipe 3.

[0028] Compared with the prior art, the orifice dust removal device for coal mines provided in this embodiment is characterized in that a blowout prevention device 1 is installed on the coal wall, a dust outlet pipe 11 is installed on the top of the blowout prevention device 1, a slag discharge pipe 12 is installed on the bottom of the blowout prevention device 1, a first dust suction pipe 2 and a second dust suction pipe 3 are connected to the dust outlet pipe 11 and the slag discharge pipe 12 respectively, and a dust removal device is connected to the tail ends of the first dust suction pipe 2 and the second dust suction pipe 3. When in use, the dust removal device can generate negative pressure inside the first dust suction pipe 2 and the second dust suction pipe 3, so that the dust inside the dust outlet pipe 11 and the slag discharge pipe 12 can be extracted at the same time and transported to the dust removal mechanism 4 for dust reduction treatment. The present application can extract the dust inside the dust prevention device and the dust in the slag discharge process through the arrangement of the first dust suction pipe 2 and the second dust suction pipe 3, effectively improving the working environment on site during the operation.

[0029] Specifically, in this embodiment, the specific structure of the blowout prevention device 1 adopts the existing technology and will not be elaborated here.

[0030] Specifically, in the present embodiment, the first dust suction pipe 2 and the second dust suction pipe 3 are both spring hoses, which are convenient for on-site arrangement and fixation.

[0031] In some embodiments, the second dust suction pipe 3 can be used as follows: Figure 1 , Figure 2 See also Figure 1 , Figure 2 The feeding end of the second dust suction pipe 3 is connected with a dust inlet pipe 31, which is connected with the slag discharge pipe 12 and is arranged upwardly inclined in a direction away from the slag discharge pipe 12. One end of the dust inlet pipe 31 is fixedly mounted on the slag discharge pipe 12, and one end of the second dust suction pipe 3 is sleeved on the outside of the dust inlet pipe 31 and fixed on the dust inlet pipe 31 by a throat clamp. The dust inlet pipe 31 is arranged upwardly inclined to prevent coal slag from entering the second dust suction pipe 3 from the dust inlet pipe 31, ensuring that the coal slag can fall through the slag discharge pipe 12, and at the same time, dust is sucked into the second dust suction pipe 3 through the extraction of the second dust suction pipe 3.

[0032] In some embodiments, the above-mentioned slag discharge pipe 12 can be used as follows Figure 1 , Figure 2 See also Figure 1 , Figure 2 , a guide pipe 5 is installed inside the slag discharge pipe 12, the slag discharge pipe 12 and the guide pipe 5 are arranged at intervals, and the top of the guide pipe 5 is fixedly connected to the inner wall of the slag discharge pipe 12, and the dust inlet pipe 31 is connected between the guide pipe 5 and the slag discharge pipe 12. A guide pipe 5 is fixedly installed inside the slag discharge pipe 12, the guide pipe 5 and the slag discharge pipe 12 are arranged coaxially, and there is a gap between the guide pipe 5 and the slag discharge pipe 12. Coal slag and dust will fall down along the slag discharge pipe 12, and when negative pressure is generated inside the second dust suction pipe 3, the dust inside the slag discharge pipe 12 will be sucked into the gap, and then sucked into the second habit through the dust inlet pipe 31, while the coal slag with larger volume and weight will continue to fall down along the guide pipe 5. And the guide pipe 5 can prevent the coal slag from being directly sucked into the second dust suction pipe 3, reducing the absorption of coal slag. The dust inside the slag discharge pipe 12 is effectively absorbed.

[0033] Specifically, in this embodiment, the top circumference of the material guiding pipe 5 is sealedly connected to the inner wall of the slag discharging pipe 12 .

[0034] In some embodiments, the guide tube 5 can be used as follows: Figure 2 See the structure shown. Figure 2A conical tube 51 is fixedly installed on the top of the guide pipe 5, and one end of the conical tube 51 is fixedly installed on the inner wall of the slag discharge pipe 12. A conical tube 51 is fixedly installed on the top of the guide pipe 5, the bottom radius of the conical tube 51 is larger than the top radius, and the top of the conical tube 51 is fixedly installed on the inner wall of the slag discharge pipe 12. The bottom of the conical tube 51 is the same as the inner diameter of the guide pipe 5 and is fixedly connected to the guide pipe 5 by welding. The guide pipe 5 can be fixed to the inner wall of the slag discharge pipe 12 through the conical tube 51. At the same time, the guidance of the conical tube 51 can ensure that the coal slag can fall smoothly. At the same time, dust can enter the gap between the guide pipe 5 and the slag discharge pipe 12, and be sucked into the dust removal mechanism 4 through the second dust suction pipe 3.

[0035] In some embodiments, the dust removal mechanism 4 can be used as follows: Figure 1 , Figure 3 See also Figure 1 , Figure 3 The dust removal mechanism 4 includes a material collection box 41, a dust collection pipe 42, an air intake pipe 421 and a water intake pipe 422. There are two dust collection pipes 42. The first dust suction pipe 2 and the second dust suction pipe 3 are respectively connected in the middle of the two dust collection pipes 42. One end of the dust collection pipe 42 is connected to the material collection box 41; the air intake pipe 421 is connected to the end of the dust collection pipe 42 away from the material collection box 41, and is used to transport gas to the inside of the dust collection pipe 42; the water intake pipe 422 is connected to the middle of the air intake pipe 421, and is used to transport liquid to the inside of the air intake pipe 421. The dust collection pipe 42 is connected to the discharge pipes of the first dust collection pipe 2 and the second dust collection pipe 3. The dust collection pipe 42 is arranged in a horizontal direction. A feed pipe is obliquely arranged at the top of the dust collection pipe 42. The feed pipe is obliquely arranged from top to bottom along the flow direction of the air inside the dust collection pipe 42. The air inlet pipe 421 is installed at one end of the dust removal pipe 42 away from the collecting box 41, and a water inlet pipe 422 is connected to the middle of the air inlet pipe 421, and a pressure regulating valve is installed on the air inlet pipe 421 and the water inlet pipe 422. In the working state, gas is transported to the inside of the dust removal pipe 42 through the air inlet pipe 421, and water is transported to the inside of the air inlet pipe 421 through the water inlet pipe 422, so that mist can be formed inside the dust outlet pipe 11, and negative pressure is generated inside the first dust suction pipe 2 and the second dust suction pipe 3, so as to achieve the effect of dust suction and dust reduction.

[0036] Specifically, in this embodiment, the two dust removal pipes 42 are located on the same side of the collecting box 41, and the two dust removal pipes 42 are arranged in parallel with each other. The air intake pipe 421 is coaxially arranged with the dust removal pipe 42, and the air intake pipe 421 is installed at the end of the dust removal pipe 42.

[0037] In some embodiments, the above-mentioned collection box 41 can be used as follows Figure 1 , Figure 3 See also Figure 1 , Figure 3The side wall of the collecting box 41 away from the dust removal pipe 42 is inclined in the vertical direction, and the distance between the side wall and the dust removal pipe 42 gradually decreases from top to bottom. The dust removal pipe 42 is installed on one side of the collecting box 41, and the side wall facing the discharge port of the dust removal pipe 42 is arranged in the vertical direction. The inclined side wall and the top of the collecting box 41 form an collecting cavity. When the dust is blown out from the inside of the dust removal pipe 42, it will flow into the collecting cavity and flow downward along the inclined side wall. The dust with liquid can flow to the bottom of the collecting box 41.

[0038] In some embodiments, the above-mentioned collection box 41 can be used as follows Figure 3 See the structure shown. Figure 3 A discharge port is provided on one side of the bottom of the aggregate box 41, and a baffle 43 is hingedly provided at the discharge port, and the top of the baffle 43 is hingedly provided on the aggregate box 41. A discharge port is provided at the bottom of the aggregate box 41, and the discharge port is located below the inclined side wall, and a guide plate is obliquely provided at the bottom of the aggregate box 41. The height of the guide plate away from the discharge port is higher than the height of the guide plate near the discharge port. The baffle 43 is installed on the outside of the aggregate box 41, and the side edge of the top of the baffle 43 is hingedly provided on the outer wall of the aggregate box 41. It can prevent the dusty water inside the aggregate box 41 from splashing to the outside from the discharge port, so that the water can flow out from the discharge port.

[0039] In some embodiments, the above-mentioned collection box 41 can be used as follows Figure 3 See the structure shown. Figure 3 The top of the material collecting box 41 is also connected with an exhaust pipe 411 for discharging gas. The exhaust pipe 411 is used to extract the gas generated during the drilling process by connecting with the gas extraction pipeline, and the gas inside the material collecting box 41 can be extracted to avoid danger.

[0040] Specifically, in this embodiment, the exhaust pipe 411 is installed on the top of the collecting box 41, and the axis of the exhaust pipe 411 is arranged along the vertical direction to minimize the entry of water with dust into the exhaust pipe 411.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dust removal device for a coal mine, characterized in that: include: A blowout prevention device (1) is installed on a coal wall, wherein a dust discharge pipe (11) is connected to the top of the blowout prevention device (1), and a slag discharge pipe (12) is provided at the bottom of the blowout prevention device (1); A first dust suction pipe (2) connected to the dust outlet pipe (11); A second dust suction pipe (3) is installed in the middle of the slag discharge pipe (12) and is connected to the slag discharge pipe (12); A dust removal mechanism (4) is installed at the discharge ends of the first dust suction pipe (2) and the second dust suction pipe (3) and is used to extract dust inside the first dust suction pipe (2) and the second dust suction pipe (3).

2. The orifice dust removal device for coal mines according to claim 1, characterized in that: The feeding end of the second dust suction pipe (3) is connected to a dust inlet pipe (31), the dust inlet pipe (31) is connected to the slag discharge pipe (12), and the dust inlet pipe (31) is arranged to be inclined upward in a direction away from the slag discharge pipe (12).

3. The orifice dust removal device for coal mines according to claim 2, characterized in that: A material guide pipe (5) is installed inside the slag discharge pipe (12); the slag discharge pipe (12) and the material guide pipe (5) are arranged at a distance, and the top of the material guide pipe (5) is fixedly connected to the inner wall of the slag discharge pipe (12); and the dust inlet pipe (31) is connected between the material guide pipe (5) and the slag discharge pipe (12).

4. The orifice dust removal device for coal mines according to claim 3, characterized in that: A conical tube (51) is fixedly mounted on the top of the material guide tube (5), and one end of the conical tube (51) is fixedly mounted on the inner wall of the slag discharge tube (12).

5. The orifice dust removal device for coal mines according to claim 1, characterized in that: The dust removal mechanism (4) comprises: Aggregate box (41); There are two dust removal pipes (42), the first dust suction pipe (2) and the second dust suction pipe (3) are respectively connected in the middle of the two dust removal pipes (42), and one end of the dust removal pipe (42) is connected to the collection box (41); An air inlet pipe (421) is connected to an end of the dust removal pipe (42) away from the collecting box (41) and is used to transport gas into the dust removal pipe (42); The water inlet pipe (422) is connected to the middle part of the air inlet pipe (421) and is used to transport liquid into the air inlet pipe (421).

6. The orifice dust removal device for coal mines according to claim 5, characterized in that: The side wall of the collecting box (41) away from the dust removal pipe (42) is arranged to be inclined in the vertical direction, and the distance between the side wall and the dust removal pipe (42) gradually decreases from top to bottom.

7. The orifice dust removal device for coal mines according to claim 5, characterized in that: A discharge port is provided at one side of the bottom of the material collection box (41), a baffle (43) is hingedly provided at the discharge port, and the top of the baffle (43) is hingedly provided on the material collection box (41).

8. The orifice dust removal device for coal mines according to claim 7, characterized in that: The top of the material collecting box (41) is also connected to an exhaust pipe (411) for discharging gas.

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