Blowout prevention and dust prevention device for air deslagging drilling
By using an orifice sleeve in the drilling hole to guide gas into the blowout box and using the downhole system to remove dust, the dust and gas ejection problems caused by wind slag discharge are solved, and safe and efficient dust removal and gas control are achieved.
Patent Information
- Application Number
- CN202422539817.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-21
AI Technical Summary
During wind slag discharge, the roadway dust is too high, and the line of vision is blurred, which increases the risk of work-related injuries. The drilling construction accelerates gas desorption and leads to gas ejection, causing hidden dangers for production safety.
The orifice sleeve is used to guide the hole-in-the-blasting gas into the blowout box. Through the blowout box buffering and dust removal, the gas is pumped into the underground extraction pipeline, and the underground static pressure water is used to remove dust. The coal slag and water mixture is introduced into the drainage system to make full use of the existing system resources.
Dust removal, prevent gas exceeding limits, improve the underground operating environment, and avoid additional kinetic energy consumption.
Smart Images
Figure CN223256783U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of coal mine gas control equipment, in particular to a blowout and dust prevention device for air slag drilling. Background Art
[0002] In the actual production process of coal mines, coal seam gas is generally extracted by pre-drilling, and hydraulic or wind slag removal is used during drilling construction.
[0003] Wind slag removal often leads to excessive dust in the tunnel, which seriously threatens the physical and mental health of miners. At the same time, the flying dust in the tunnel leads to blurred vision, causing the working environment to deteriorate and increasing the risk of work-related injuries; drilling construction will accelerate the desorption of coal seam gas, easily induce gas eruption, cause on-site gas to exceed the limit, and pose a major hidden danger to production safety. Utility Model Content
[0004] The purpose of the utility model is to provide a wind-drainage slag drilling anti-blowout and dust-proof device in response to the shortcomings and defects in the existing technology. The device adopts a hole sleeve to guide the gas in the hole into the blowout preventer box, and then through the buffering and dust removal of the blowout preventer box, the gas is pumped into the underground extraction pipeline, and then through the underground static pressure water dust removal, the coal slag and water mixture is introduced into the underground drainage system. The device can make full use of the original underground extraction system, water pressure system, and drainage system, and can achieve the effects of dust removal, preventing gas from exceeding the limit, and improving the underground working environment without adding additional kinetic energy.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: a wind-discharge slag drilling anti-blowout and dust-proof device, which includes an orifice sleeve 1 and a hose 6. The orifice sleeve 1 is provided with an exhaust pipe 2 and a slag discharge pipe 3. The exhaust pipe 2 is connected to the blowout prevention box 8 through the hose 6, and the slag discharge pipe 3 is connected to the sedimentation tank 7 through the hose 6. The blowout prevention box 8 is provided with an extraction port 9, a connecting port 10 and a drain port 11, and the extraction port 9 is connected to the extraction pipeline 12 through the hose 6.
[0006] Furthermore, two flanges 5 are installed on the outer side of the orifice sleeve 1, and the two flanges 5 are connected by bolts.
[0007] Furthermore, a water pressure port 4 is provided on the slag discharge pipe 3 , and the water pressure port 4 is connected to the water pressure pipeline underground through a hose 6 .
[0008] Furthermore, the connection port 10 is connected to the exhaust pipe 2 through a hose 6 .
[0009] Furthermore, the drain outlet 11 is provided with a valve for controlling slag discharge.
[0010] After adopting the above technical solution, the beneficial effects of the utility model are as follows: the device uses a hole sleeve to guide the gas in the hole into the blowout preventer box, and then through the buffering and dust removal of the blowout preventer box, the gas is drawn into the underground extraction pipeline, and then through the underground static pressure water dust removal, the coal slag and water mixture is introduced into the underground drainage system. The device can make full use of the original underground extraction system, compressed air system, pressurized water system, and drainage system, and can achieve the effects of dust removal, preventing gas from exceeding the limit, and improving the underground working environment without adding additional kinetic energy. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0012] Figure 1 It is a structural diagram of the present utility model.
[0013] Explanation of the reference numerals: orifice sleeve 1, exhaust pipe 2, slag discharge pipe 3, water pressure port 4, flange 5, hose 6, sedimentation tank 7, blowout preventer 8, extraction port 9, connecting port 10, drain port 11, extraction pipeline 12. DETAILED DESCRIPTION
[0014] See Figure 1 As shown, the technical solution adopted in this specific embodiment is: it includes an orifice sleeve 1 and a hose 6, an exhaust pipe 2 and a slag discharge pipe 3 are provided on the orifice sleeve 1, the exhaust pipe 2 is connected to the blowout preventer 8 through the hose 6, and the slag discharge pipe 3 is connected to the sedimentation tank 7 through the hose 6, the blowout preventer 8 is provided with an extraction port 9, a connecting port 10 and a drain port 11, and the extraction port 9 is connected to the extraction pipeline 12 through the hose 6.
[0015] To be more specific, two flanges 5 are installed on the outer side of the orifice sleeve 1, and the two flanges 5 are connected by bolts.
[0016] To be more specific, a water pressure port 4 is provided on the slag discharge pipe 3 , and the water pressure port 4 is connected to the water pressure pipeline underground through a hose 6 .
[0017] More specifically, the connection port 10 is connected to the exhaust pipe 2 via the hose 6 .
[0018] To be more specific, the drain outlet 11 is provided with a valve for controlling slag discharge.
[0019] The working principle of the utility model is as follows: when drilling a hole in the layer underground, first use the drill bit to construct a hole of a certain length, then withdraw the drill, and insert the drill bit into the orifice sleeve 1, then insert the orifice sleeve 1 into the hole, connect the exhaust pipe 2 to the connection port 10 of the blowout preventer box 8 through the hose 6, connect the extraction port 9 of the blowout preventer box 8 to the underground extraction pipeline 12, and at the same time inject a certain amount of water into the blowout preventer box 8, and then guide the slag discharge pipe 3 of the orifice sleeve 1 into the underground sedimentation tank 7 through the hose 6, and then connect the water pressure port 4 of the slag discharge pipe 3 to the underground water pressure system through the hose 6. After the preparation work is completed, open the underground extraction pipeline. 12 and the water pressure system, start the drilling rig to carry out drilling construction, the gas and fine coal dust discharged in the hole enter the blowout preventer box 8 through the hose 6, the coal dust particles sink into the water in the blowout preventer box 8, the gas is sucked into the underground extraction pipeline 12 through the hose 6, the coal slag and gas discharged in the hole pass through the slag discharge pipe 3, and are mixed with the static pressure water in the slag discharge pipe 3. After achieving the purpose of dust removal, they are discharged into the sedimentation tank 7 through the hose 6, the coal slag enters the sedimentation tank 7, and the wastewater is discharged into the underground drainage ditch, thereby ensuring that the operation site is dry and water-free. Among them, when the coal slag in the blowout preventer box 8 is too much, it can be discharged through the drain port 11.
[0020] The above is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.
Claims
1. A device for preventing blowout and dust in drilling with air discharge, characterized by: It comprises an orifice sleeve (1) and a hose (6); an exhaust pipe (2) and a slag discharge pipe (3) are provided on the orifice sleeve (1); the exhaust pipe (2) is connected to a blowout prevention box (8) through the hose (6); and the slag discharge pipe (3) is connected to a sedimentation tank (7) through the hose (6); an extraction port (9), a connecting port (10) and a drain port (11) are provided on the blowout prevention box (8); and the extraction port (9) is connected to an extraction pipeline (12) through the hose (6); Two flanges (5) are installed on the outer side of the orifice sleeve (1), and the two flanges (5) are connected by bolts; The slag discharge pipe (3) is provided with a water pressure port (4), and the water pressure port (4) is connected to the water pressure pipeline underground through a hose (6).
2. The device for preventing blowout and dust in drilling with air slag removal according to claim 1, characterized in that: The connecting port (10) is connected to the exhaust pipe (2) via a hose (6).
3. The device for preventing blowout and dust in drilling with air slag removal according to claim 1, characterized in that: The drain port (11) is provided with a valve for controlling slag discharge.