A dust treatment and gas prevention and control equipment for coal roadway drilling

Abstract

The utility model relates to the technical field of coal mining production, and disclose a kind of dust control and gas prevention and control equipment for coal roadway drilling, including steel pipe, further include: the sealing pad of fixed connection in the one end of steel pipe, locking portion for being used to be fixed in drilling is provided on steel pipe, the side fixed communication of steel pipe has deslagging pipe, the bottom end fixed communication of deslagging pipe has collection box, multiple rotary spray heads are provided in collection box, supply liquid part for supplying water source to rotary spray head is provided on collection box, gas prevention and control part is equipped on steel pipe, for the gas in drilling is discharged;The utility model is provided with hose, collection box, rotary spray head and gas discharge pipe, can form integrated collaborative protection system with dust prevention, gas discharge, drilling slag collection function in one, greatly improve the overall safety protection, can satisfy the demand of modern coal mine green, efficient, intrinsically safe type drilling operation.

Description

Technical Field

[0001] This utility model relates to the field of coal mining and production technology, specifically to a dust control and gas prevention device for coal roadway drilling. Background Technology

[0002] In underground coal mine production operations, especially in the tunneling and mining stages of coal roadways (i.e., roadways excavated along the coal seam), drilling rigs are usually used to drill holes in the coal body in order to explore the geological structure ahead, release coal seam gas pressure, prevent coal and gas outbursts, and reduce coal dust generation.

[0003] The following problems exist in existing coal mine drilling operations: First, the sealing performance between the drill rod and the borehole opening is poor, making it difficult to achieve effective sealing. This leads to the unorganized diffusion of dust, causing the dust concentration in the roadway to far exceed the prescribed limits. Furthermore, there is a lack of an immediate gas control mechanism. When gas erupts from the borehole, the response is delayed, making it impossible to release it in a timely manner. This can easily lead to the risk of gas accumulation in the borehole, resulting in explosions or poisoning. In addition, drill cuttings generated during drilling are directly scattered in the roadway, which not only pollutes the working environment but also increases the workload of cleanup, affecting the standardized management of the roadway. An integrated and collaborative protection system that combines dust prevention, gas emission, and drill cuttings collection has not been formed, resulting in low overall safety protection and making it difficult to meet the needs of modern coal mines for green, efficient, and inherently safe drilling operations. Utility Model Content

[0004] This utility model provides a dust control and gas prevention device for coal mine drilling. By setting up a hose, collection box, rotating nozzle and gas emission pipe, it can form an integrated and collaborative protection system that integrates dust prevention, gas emission and drill cuttings collection functions, which greatly improves the overall safety protection and solves the problems mentioned in the background art, such as poor sealing, dust emission, gas accumulation and drill cuttings scattering, which lead to low overall safety protection in traditional drilling operations.

[0005] This utility model provides the following technical solution: A dust control and gas prevention device for coal mine drilling includes a steel pipe and a sealing gasket fixedly connected to one end of the steel pipe. The steel pipe is provided with a locking part for fixing it in the borehole. A slag discharge pipe is fixedly connected to one side of the steel pipe, and a collection box is fixedly connected to the bottom end of the slag discharge pipe. Multiple rotating nozzles are provided in the collection box. The collection box is provided with a liquid supply part for supplying water to the rotating nozzles. A gas prevention part is provided on the steel pipe for discharging gas from the borehole.

[0006] As a preferred embodiment of this utility model, the locking part includes a flexible hose fixedly sleeved on a steel pipe, the flexible hose having a cavity inside, a water injection valve fixedly installed on the flexible hose, and the output end of the water injection valve extending into the cavity.

[0007] As a preferred embodiment of this utility model, the liquid supply unit includes a water tank fixedly connected to one side of the collection tank, a liquid addition pipe fixedly connected to the water tank, a sealing plug inserted into the liquid addition pipe, a main pipe fixedly connected to the inner top of the collection tank, a plurality of rotating nozzles fixedly connected to the bottom of the main pipe in a ring at equal intervals, a metering pump fixedly installed on the top of the water tank, a liquid inlet end of the metering pump fixedly connected to a liquid extraction pipe, and a liquid delivery end of the metering pump fixedly connected to the main pipe through a liquid delivery pipe.

[0008] As a preferred technical solution of this utility model, the gas control unit includes a negative pressure pipe fixedly connected to the air inlet end of the negative pressure equipment, a gas discharge pipe fixedly connected to one side of the steel pipe, a valve fixedly installed on the gas discharge pipe, and the exhaust end of the gas discharge pipe fixedly connected to the end of the negative pressure pipe away from the negative pressure equipment.

[0009] As a preferred technical solution of this utility model, a slag outlet is provided through one side of the collection box, and a sealing plate for sealing the slag outlet is fixedly connected to the collection box.

[0010] As a preferred embodiment of this utility model, an observation window is fixedly installed on one side of the collection box.

[0011] Compared with the prior art, this utility model provides a dust control and gas prevention device for coal mine drilling, which has the following beneficial effects: 1. In this dust control and gas prevention equipment for coal roadway drilling, the use of hoses, water injection valves, and sealing gaskets not only facilitates the fixing of steel pipes inside the borehole, but also provides a seal for the borehole, preventing the unorganized spread of dust and thus protecting the environment of the roadway and the health of workers.

[0012] 2. In this coal roadway drilling dust control and gas prevention equipment, the drilling rig can discharge drill cuttings into a collection box through the slag discharge pipe for centralized collection. Through the setting of metering pump and main pipe, the drill cuttings discharged into the collection box can be treated to reduce dust, further preventing drill cuttings and dust from polluting the environment in the roadway. It also greatly reduces the intensity of subsequent cleaning operations for workers and improves the standardized management of the roadway.

[0013] 3. In this coal roadway drilling dust control and gas prevention equipment, by opening the valve, negative pressure can be used to extract the gas mixed with dust in the steel pipe and borehole. Through the setting of gas emission pipe and negative pressure pipe, the discharged gas can be transported to a safe area for treatment and utilization, avoiding the accumulation of gas in the borehole, thereby greatly reducing the risk of gas explosion or poisoning. This equipment can form an integrated collaborative protection system that integrates dust prevention, gas emission and drill cuttings collection functions, greatly improving the overall safety protection and meeting the needs of modern coal mine green, efficient and inherently safe drilling operations.

[0014] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model solves the problems mentioned in the background art, such as poor sealing, dust emission, gas accumulation, and drill cuttings scattering, which lead to low overall safety protection in traditional drilling operations. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the collection box of this utility model; Figure 4 This is a three-dimensional structural diagram of the rotating nozzle of this utility model.

[0017] In the diagram: 1. Steel pipe; 2. Sealing gasket; 3. Hose; 31. Water injection valve; 4. Gas discharge pipe; 41. Valve; 42. Negative pressure pipe; 5. Slag discharge pipe; 6. Collection box; 61. Slag outlet; 62. Sealing plate; 63. Observation window; 7. Main pipe; 71. Water tank; 72. Metering pump; 73. Liquid extraction pipe; 74. Liquid delivery pipe; 75. Liquid addition pipe; 8. Rotary nozzle. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example: Reference Figures 1-4 A dust control and gas prevention device for coal mine drilling includes a steel pipe 1 and a sealing gasket 2 fixedly connected to one end of the steel pipe 1. The steel pipe 1 has a locking part for fixing it inside the borehole. A slag discharge pipe 5 is fixedly connected to one side of the steel pipe 1, and a collection box 6 is fixedly connected to the bottom end of the slag discharge pipe 5. An observation window 63 is fixedly installed on one side of the collection box 6 to facilitate observation of the amount of drill slag accumulation. Multiple rotating nozzles 8 are installed inside the collection box 6. These rotating nozzles 8 are self-driven rotating tangential flow nozzles, and their models can be Rain-Bird900 series or R... -VAN series, and the number of rotary nozzles 8 is 3-8. This equipment takes 5 as the preferred example to ensure uniform spraying and dust suppression effect. The collection box 6 is equipped with a liquid supply part for supplying water to the rotary nozzles 8. A slag outlet 61 is opened through one side of the collection box 6. A sealing plate 62 for sealing the slag outlet 61 is fixedly connected to the collection box 6. By opening the sealing plate 62, the drill cuttings and waste liquid collected in the collection box 6 can be discharged at the same time, so that workers can clean up the work at one time. A gas control part is provided on the steel pipe 1 to discharge the gas in the borehole.

[0020] Of course, in other embodiments, the locking part includes a flexible hose 3 fixedly sleeved on the steel pipe 1, the flexible hose 3 having a cavity inside, a water injection valve 31 fixedly installed on the flexible hose 3, and the output end of the water injection valve 31 extending into the cavity.

[0021] Specifically, in use, the steel pipe 1 and the hose 3 are first inserted into the pre-drilled hole. Then, water is injected into the cavity of the hose 3 through the water injection valve 31, causing the hose 3 to expand and tightly adhere to the hole wall, thus fixing the steel pipe 1. Then, the twist drill rod of the drilling rig is inserted into the steel pipe 1 to perform drilling operations. Through the setting of the hose 3, the water injection valve 31 and the sealing gasket 2, it is not only easy to fix the steel pipe 1 in the drill hole, but also to provide a seal for the drill hole, preventing the unorganized spread of dust, thereby protecting the environment of the tunnel and the health of the workers.

[0022] The liquid supply unit includes a water tank 71 fixedly connected to one side of the collection tank 6. A liquid addition pipe 75 is fixedly connected to the water tank 71 for adding clean water to the water tank 71. A sealing plug is inserted into the liquid addition pipe 75 to seal the liquid addition pipe 75 when not in operation. When water supply is required, the sealing plug needs to be removed to ensure that the air pressure inside the water tank 71 is balanced with the external air pressure. A main pipe 7 is fixedly connected to the top of the collection tank 6. Multiple rotating nozzles 8 are fixedly connected to the bottom of the main pipe 7 in a ring at equal intervals. A metering pump 72 is fixedly installed on the top of the water tank 71. Its model can be Prominent Sigma series or Ligo JX series, and the flow rate can be steplessly adjusted. The liquid inlet end of the metering pump 72 is fixedly connected to the liquid extraction pipe 73, and the liquid delivery end of the metering pump 72 is fixedly connected to the main pipe 7 through the liquid delivery pipe 74.

[0023] Specifically, during use, the drilling rig operates, allowing drill cuttings to be transported along the grooves of the twist drill rod and discharged into the collection box 6 via the slag discharge pipe 5. During this process, by activating the metering pump 72, clean water from the water tank 71 is pumped into multiple rotating nozzles 8 via the extraction pipe 73, the delivery pipe 74, and the main pipe 7. The rotating nozzles 8 automatically rotate and atomize the clean water, spraying it into the collection box 6. This process effectively reduces dust from the drill cuttings discharged into the collection box 6, further preventing drill cuttings and dust from polluting the environment within the tunnel. It also significantly reduces the intensity of subsequent cleaning operations for workers and improves the standardized management of the tunnel.

[0024] The gas control unit includes a negative pressure pipe 42 fixedly connected to the air inlet of the negative pressure equipment, a gas discharge pipe 4 fixedly connected to one side of the steel pipe 1, a valve 41 fixedly installed on the gas discharge pipe 4, and the exhaust end of the gas discharge pipe 4 fixedly connected to the end of the negative pressure pipe 42 away from the negative pressure equipment.

[0025] Specifically, during use, by opening valve 41, the negative pressure device can extract the gas mixed with dust from the steel pipe 1 and the borehole using negative pressure. The gas is then transported to a safe area for treatment and utilization through the gas discharge pipe 4 and the negative pressure pipe 42, preventing the accumulation of gas in the borehole and greatly reducing the risk of gas explosion or poisoning. This equipment can form an integrated collaborative protection system that combines dust prevention, gas discharge, and drill cuttings collection, greatly improving overall safety and protection. It can meet the needs of modern coal mine green, efficient, and inherently safe drilling operations.

[0026] Components not described in detail in this article are existing technologies and will not be elaborated upon here.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dust control and gas prevention device for coal mine roadway drilling, comprising a steel pipe (1), characterized in that, It also includes a sealing gasket (2) fixedly connected to one end of the steel pipe (1), and the steel pipe (1) is provided with a locking part for fixing it in the borehole. A slag discharge pipe (5) is fixedly connected to one side of the steel pipe (1). The bottom end of the slag discharge pipe (5) is fixedly connected to a collection box (6), and multiple rotating nozzles (8) are provided in the collection box (6). The collection box (6) is provided with a liquid supply section for supplying water to the rotating nozzles (8), and the steel pipe (1) is provided with a gas control section for discharging gas from the borehole.

2. The dust control and gas prevention equipment for coal mine drilling according to claim 1, characterized in that, The locking part includes a flexible hose (3) fixedly sleeved on the steel pipe (1), the flexible hose (3) has a cavity inside, a water injection valve (31) is fixedly installed on the flexible hose (3), and the output end of the water injection valve (31) extends into the cavity.

3. The dust control and gas prevention equipment for coal mine drilling according to claim 1, characterized in that, The liquid supply unit includes a water tank (71) fixedly connected to one side of the collection box (6), a liquid addition pipe (75) fixedly connected to the water tank (71), a sealing plug inserted into the liquid addition pipe (75), a main pipe (7) fixedly connected to the inner top of the collection box (6), a plurality of rotating nozzles (8) fixedly connected to the bottom of the main pipe (7) in a ring at equal intervals, a metering pump (72) fixedly installed on the top of the water tank (71), a liquid inlet end of the metering pump (72) fixedly connected to a liquid extraction pipe (73), and a liquid delivery end of the metering pump (72) fixedly connected to the main pipe (7) through a liquid delivery pipe (74).

4. The dust control and gas prevention equipment for coal mine drilling according to claim 1, characterized in that, The gas control unit includes a negative pressure pipe (42) fixedly connected to the air inlet of the negative pressure equipment. A gas discharge pipe (4) is fixedly connected to one side of the steel pipe (1). A valve (41) is fixedly installed on the gas discharge pipe (4). The exhaust end of the gas discharge pipe (4) is fixedly connected to the end of the negative pressure pipe (42) away from the negative pressure equipment.

5. The dust control and gas prevention equipment for coal mine drilling according to claim 1, characterized in that, A slag outlet (61) is provided through one side of the collection box (6), and a sealing plate (62) for sealing the slag outlet (61) is fixedly connected to the collection box (6).

6. The dust control and gas prevention equipment for coal mine drilling according to claim 1, characterized in that, An observation window (63) is fixedly installed on one side of the collection box (6).

Images