CN202157820U - Superfine magnetized foam drilling dust remover - Google Patents

Abstract

The utility model relates to an ultra-micro magnetized foam drilling dust collector, which is suitable for underground dust removal in coal mines. The dust collector is mainly composed of a borehole plugging device, a first-stage dust suppression device and an ultra-fine magnetized foam dust collection device; the borehole plugger is connected with the first-stage dust suppression device; the first-stage dust suppression device is connected with the ultra-fine magnetization foam dust collection device; Through the first-stage dust suppression device connected to the borehole plugging device, the large particles of coal dust generated during the drilling into the coal and rock mass are exported through the conical cylinder, and the coal dust and gas enter the ultra-fine magnetized foam dust collection device. In the three compartments of the dust collection device, the dust is reduced step by step. Compared with the existing technology, the structure is simple, the operation is safe, and the use is convenient. Respirable dust dust suppression efficiency is high.

Description

Ultra-fine magnetized foam drilling dust collector

technical field

The utility model relates to a dust remover, in particular to an ultra-micro magnetized foam drilling dust remover suitable for underground coal mines.

Background technique

The hazards of coal mine dust are not only manifested in the occurrence of coal dust or gas coal dust explosion accidents, affecting operation safety and endangering the ecological environment around the mining area, but also in causing workers to suffer from pneumoconiosis. More than 90% of China's coal mines are underground mines. During the whole process of coal production, there are occupational hazards such as productive dust and productive poisons, which have caused some workers to suffer from silicosis, coal workers' pneumoconiosis and occupational poisoning to varying degrees. and other occupational diseases. According to incomplete statistics, the dust occupational hazard in my country's coal industry ranks first among all major industries. At present, the dust control technologies widely used in coal mines at home and abroad mainly include: coal seam water injection, spray dust reduction, foam dust removal, electrostatic dust removal, ventilation dust removal, chemical dust suppression, etc. These technologies have played a certain role in the prevention and control of underground mine dust, but due to many Due to various reasons, there are still a few dedusting technologies that have been promoted by coal mines and have significant effects.

In the process of gas drainage and drilling in coal mines, most of them use wind pressure powder discharge, and wind pressure powder discharge will bring a lot of coal dust flying at the drilling hole, which seriously deteriorates the working environment, affects the occupational health of miners, and becomes a safety hazard. A major hidden danger in production. At the same time, in the process of pumping and draining drilling, dusting often occurs, and the dust production is large and relatively concentrated. Therefore, dust collectors are often used for dust removal. However, the dust removal effect of existing dust collectors is not ideal. Although domestic and foreign drilling dust removal The device has gone through several technical innovations, but a series of problems in the process of drilling and dust removal have not found effective solutions, especially the dust removal efficiency of respirable coal dust has not been optimistic.

Contents of the invention

Technical problem: The purpose of this utility model is to overcome the deficiencies in the prior art and provide an ultra-micro magnetized foam drilling dust collector with simple structure, safe operation and convenient use.

Technical solution: The ultra-fine magnetized foam drilling dust collector of the utility model is mainly composed of a drilling plugging device, a first-stage dust suppression device, and an ultra-fine magnetizing foam dust collecting device. The outlet of the drilling plugging device is connected to the The first-level dust-reducing device is connected, and the first-level dust-reducing device is connected with the ultra-micro magnetized foam dust-catching device through a connecting pipe; There is an inclined discharge pipe joint. The rear end of the casing is provided with a U-shaped gland matching the drill pipe. The U-shaped gland is equipped with PTFE packing for sealing the drill pipe. The U-shaped gland A U-shaped steel pressure plate matched with the drill pipe is embedded at the entrance, and a skeleton oil seal is arranged inside the U-shaped steel pressure plate; the first-level dust suppression device includes a conical cylinder on the bracket and a conical cylinder connected to the conical cylinder. Cylindrical feeding barrel, the side wall of the cylindrical feeding barrel is provided with a feeding pipe connected to the discharge pipe joint, the top of the cylindrical feeding barrel is provided with a coal dust pipe joint, and the bottom of the conical barrel is provided with a slag discharge valve; The ultra-micro-magnetized foam dust-collecting device includes an ultra-micro-magnetized foam dust-collecting box with a foam liquid at the bottom, and the ultra-micro-magnetized foam dust-collecting box is provided with two compartments that divide it into three compartments a, b, and c. Partition board, in the compartment a, there is a coal dust conveying pipe connected to the joint of the coal dust pipe through a connecting pipe; in compartment b, there is a coal dust conveying pipe II whose upper part communicates with compartment a; The upper part of the coal dust conveying pipe communicated with compartment b, the bottom of compartments a and b are equipped with strong magnets, the top of compartment c is equipped with an exhaust pipe that communicates with the atmosphere, the three compartments of a, b and c The middle part is respectively provided with filter screens, and the lower parts of the three compartments a, b and c are respectively provided with drain ports.

The filter screens respectively located in the middle of the three compartments a, b, and c are detachable, and the mesh number of the filter screen increases from compartment to compartment, the mesh number of the filter screen in compartment a is the smallest, and the mesh number of the filter screen in compartment c The number is the largest; the diameter of the coal dust conveying pipe III is greater than the diameter of the coal dust conveying pipe II, and the diameter of the coal dust conveying pipe II is greater than the diameter of the coal dust conveying pipe I; the coal dust conveying pipe I The bottom openings of coal dust conveying pipe II, coal dust conveying pipe III, and coal dust conveying pipe III are trumpet-shaped. The outlet of the dust conveying pipe, the outlet of the coal dust conveying pipe I is higher than the outlet of the coal dust conveying pipe II.

Beneficial effects: due to the adoption of the above-mentioned technical scheme, dust suppression is realized through the first-stage dust suppression device connected to the drilling plugging device, and the large particles of coal dust generated during the drilling of coal and rock mass are exported through the conical cylinder, and the coal dust and The gas enters the ultra-fine magnetized foam dust collection device, and the dust is reduced step by step in the three compartments a, b, and c of the ultra-fine magnetized foam dust capture device. Enlarged, the bottoms of compartment a and compartment b are covered with strong magnets, and the foam liquid in the ultra-fine magnetized foam dust-collecting compartment foams under the disturbance of the gas return air, and passes through the filter to produce particle size Different ultrafine foams, at the same time, disturb and cut the magnetic induction lines, generate a strong magnetic field, and magnetize the foam liquid, foam, and coal dust. The generated ultra-fine magnetized foam has a significant effect on coal dust, especially respirable coal dust. Due to the high wind pressure of drilling, in order to avoid excessive foam liquid spraying out from the exhaust pipe, the pressure is relieved step by step inside the ultra-fine magnetized foam dust collection box, that is, the diameter of the coal dust conveying pipeline is from a, b, to c The three compartments increase step by step, and the diameter of the exhaust pipeline is larger. After the multi-stage subsidence of the ultra-fine magnetized foam dust collection box, the air flow containing gas and coal dust, accompanied by part of the foam liquid, is discharged into the drilling site through the exhaust pipeline. The part of the foam liquid discharged thereupon can effectively avoid secondary dust raising on the ground of the drilling site. During the drilling process, it can efficiently capture and reduce a large amount of coal dust ejected from the drilling hole, improve the working environment, and protect the life and health of miners. The utility model has the advantages of simple structure, convenient operation, safety and reliability, high dust suppression efficiency for whole dust and respirable coal dust, good effect and wide practicability.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a side view of the ultra-micro magnetized foam dust-collecting box of the present invention.

Fig. 3 is an enlarged view of the tail of the drilling occluder of the present invention.

In the figure: Borehole plugging device-1, connecting pipe-2, liquid filling port sealing cover-3, Ⅰ coal dust conveying pipe-4, Ⅱ coal dust conveying pipe-5, exhaust pipe-6, Ⅲ coal dust conveying Tube-7, filter screen-8, outrigger-9, strong magnet-10, partition-11, ultra-micro magnetized foam dust collector-12, slag discharge valve-13, bracket-14, cone-15, cylinder Feeding cylinder-16, feeding pipe-17, coal dust pipe joint-18, liquid outlet-19, casing-1-1, U-shaped gland-1-2, connecting bolt-1-3, skeleton oil seal -1-4, U-shaped steel platen -1-5, dustproof ring -1-6, polytetrafluoroethylene packing -1-7, sealing ring -1-8, discharge pipe joint -1-9.

Detailed ways

An embodiment of the present utility model is further described below in conjunction with accompanying drawing:

As shown in Figures 1 and 2, the ultra-fine magnetized foam drilling dust collector is mainly composed of a drilling blocker 1, a first-level dust suppression device and an ultra-fine magnetization foam dust collection device. The outlet of the drilling blocker 1 is connected through a connecting pipe. 17 is connected with the first-level dust suppression device, which is connected with the ultra-fine magnetized foam dust collection device through the connecting pipe 2; the borehole plugging device 1 includes a casing 1-1 with an external thread at the front , the rear of the casing 1-1 is provided with a discharge pipe joint 1-9 arranged obliquely, and the rear end of the casing 1-1 is provided with a U-shaped gland 1-2 matched with the drill pipe, and the U-shaped gland 1-2 The inner hole is provided with polytetrafluoroethylene packing 1-7 for sealing the drill pipe, the inner outlet of the U-shaped gland 1-2 is provided with a sealing ring 1-8, and the entrance of the U-shaped gland 1-2 A U-shaped steel pressure plate 1-5 matching with the drill pipe is embedded, and the U-shaped steel pressure plate 1-5 is fixedly connected to the U-shaped gland 1-2 through the dust-proof ring 1-6 and the connecting bolt 1-3. Skeleton oil seals 1-4 are arranged inside the shaped steel platen 1-5; the dust suppression device includes a conical cylinder 15 mounted on the bracket 14 and a cylindrical feeding cylinder 16 connected to the conical cylinder 15, the cylindrical feeding cylinder The side wall of 16 is provided with the feed pipe 17 that links to each other with discharge pipe joint 1-9, and the top of cylindrical feeding cylinder 16 is provided with coal dust pipe joint 18, and the bottom of conical cylinder 15 is provided with slagging valve 13; Described ultra-micro magnetized foam dust-catching device comprises the ultra-micro-magnetized foam dust-collecting box 12 that is arranged on the support leg 9 and foam liquid is housed, the ultra-micro-magnetized foam dust-collecting box 12, and the super-micro-magnetized foam dust-catching box 12 is equipped with There are two partitions 11 that divide it into three compartments a, b, and c. The compartment a is provided with a coal dust delivery pipe 4 connected to the coal dust pipe joint 18 through the connecting pipe 2, and the compartment b is There is a II coal dust conveying pipe 5 whose upper part communicates with the a compartment, and a III coal dust conveying pipe 7 whose upper part communicates with the b compartment is arranged in the c compartment, and the pipe diameter of the III coal dust conveying pipe 7 is larger than that of the II coal dust conveying pipe The pipe diameter of pipe 5, the pipe diameter of II coal dust conveying pipe 5 is greater than the pipe diameter of I coal dust conveying pipe 4. The bottom openings of I coal dust conveying pipe 4, II coal dust conveying pipe 5, and III coal dust conveying pipe 7 are trumpet-shaped, and the outlet of III coal dust conveying pipe 7 is adjacent to the liquid surface at the bottom of ultra-micro magnetized foam dust collecting box 12, II The outlet of coal dust conveying pipe 5 is higher than the outlet of III coal dust conveying pipe 7, and the outlet of I coal dust conveying pipe 4 is higher than the outlet of II coal dust conveying pipe 5. The bottoms of compartments a and b are provided with strong magnets 10 that magnetize the foam liquid, the top of compartment c is provided with an exhaust pipe 6 that communicates with the atmosphere, and the middle parts of the three compartments a, b and c are respectively equipped with Filter screen 8, filter screen 8 is detachable, the mesh number of filter screen 8 increases with each compartment, the mesh number of the filter screen in compartment a is the smallest, between 40 mesh and 80 mesh, and the mesh number of filter screen in compartment c Maximum, the mesh number of the filter mesh is greater than 200 mesh, that is, the mesh number of the filter mesh in the c compartment is greater than the mesh number of the filter mesh in the b compartment, and the mesh number of the filter mesh in the b compartment is greater than the mesh number of the filter mesh in the a compartment; a, The lower parts of the three compartments b and c are respectively provided with drain ports 19 .

Working process: Drill a shallow hole on the coal rock wall first, install the drilling plugging device 1, insert the drill pipe into the drilling plugging device 1, and fix the whole workpiece on the coal wall of the drilling site with steel wires, connect After finishing the dust collector, open the superfine magnetized foam dust-catching compartment 12 top liquid filling port sealing cover 3 and add the magnetized foam liquid prepared in advance in the a compartment and the b compartment. Check the slag discharge valve 13 at the bottom of the first-level conical dust suppression device, the airtightness of the sealing cover 3 of the liquid filling port on the top of the ultra-fine magnetized foam dust collection box 12, and whether the connecting pipe 2 and the coal dust pipe joint 18 are well sealed.

After the inspection, you can start the drilling rig and start drilling. The dust removal process will be carried out synchronously with the drilling. The internal working conditions of the dust collector are as follows: the air flow containing gas and coal dust enters through the three-way outlet of the drilling plug 1 and enters through the feed pipe 17. The first-stage cone-shaped dust suppression device, under the action of gravity, large particles of coal dust settle to the bottom of the device, the slag discharge valve 13 is normally closed, and is regularly opened to clean the internal coal dust; small particles of coal dust continue to enter through the connecting pipe 2 with the gas return air The ultra-fine magnetized foam dust collection box 12, under the action of the gas return air, the coal dust-containing air flows through the I coal dust conveying pipeline 4 and enters compartment a. At the same time, the magnetic induction line is cut under the disturbance of the wind flow, and the foam liquid Foaming, a large amount of ultra-fine magnetized foam is generated in compartment a, and part of the coal dust settles to the bottom of compartment a; the unsettled coal dust continues to enter compartment b with the gas return air. According to the same principle, part of the coal dust The dust is settled by the ultra-fine magnetized foam with smaller particle size in the b compartment, while the coal dust that has not been settled will continue to enter the c compartment with the gas return air, and the final stage of ultra-fine magnetized foam washing begins. The extremely small coal dust that has not been settled will be returned to the air with the gas, mixed with part of the foam liquid, and then discharged to the ground of the drilling site through the exhaust pipe 6, avoiding secondary dust.

According to the situation of the amount of slag discharge, the coal dust and coal slime in the first-level conical dust suppression device and the ultra-micro magnetized foam dust collection box 12 are regularly cleaned. For the cleaning of the first-stage conical dust suppression device, it is only necessary to open the bottom slag discharge valve 13; for the cleaning of the ultra-fine magnetized foam dust collection box, generally only need to open the liquid discharge port 19 to release the coal slurry , if the coal slurry is viscous and difficult to discharge, then you can open the liquid filling port sealing cover 3 to inject water, and the coal slurry will be automatically discharged when it is diluted to a certain extent. In addition, the top cover of the ultra-fine magnetized foam dust collection box 12 is opened regularly, and the filter screen 8 is taken out for cleaning or replacement.

According to the use of the dust collector, regularly replace the PTFE woven packing 1-7 filled in the plug of the drilling plug 1, remove the gland, and pull out the aging PTFE woven packing 1-7 to replace Regularly replace the slag discharge valve 13 at the bottom of the first-level conical dust suppression device and the sealing ring in the liquid filling port sealing cover 3 at the top of the ultra-micro magnetized foam dust collection box 12.

Claims (4)

1. a ultra micro magnetizes foam boring deduster; It is characterized in that: it mainly is made up of borehole sealing device (1), one-level device for reducing dust, ultra micro magnetization foam arrested dust device; The outlet of borehole sealing device (1) is connected with the one-level device for reducing dust through feeding pipe (17), and the one-level device for reducing dust is connected with ultra micro magnetization foam arrested dust device through tube connector (2); Described borehole sealing device (1) comprises that the front portion has externally threaded sleeve pipe (1-1); The rear portion of sleeve pipe (1-1) is provided with the drainage conduit joint (1-9) that is obliquely installed; The rear end of sleeve pipe (1-1) is provided with the U-shaped gland (1-2) that matches with drilling rod; Be provided with the polytetrafluoroethylene (PTFE) establishment filler (1-7) of sealing drilling rod in the U-shaped gland (1-2); The entrance of U-shaped gland (1-2) is embedded with the U-shaped keeper plate of steel (1-5) that matches with drilling rod, is provided with outside framework oil seal (1-4) in the U-shaped keeper plate of steel (1-5); Described one-level device for reducing dust comprises the conically shaped (15) that is located on the support (14) and is connected the cylinder feed inlet barrel (16) on the conically shaped (15); The sidewall of cylinder feed inlet barrel (16) is provided with the feeding pipe (17) that links to each other with drainage conduit joint (1-9); The top of cylinder feed inlet barrel (16) is provided with coal dust union (18), and conically shaped (15) bottom is provided with slag-discharging valve (13); The ultra micro magnetization foam arrested dust case (12) of foams bottom comprising, described ultra micro magnetization foam arrested dust device is housed; Be provided with two dividing plates (11) that it are divided into a, b, three compartments of c in the ultra micro magnetization foam arrested dust case (12); Be provided with the I coal dust carrier pipe (4) that links to each other with coal dust union (18) through tube connector (2) in a compartment; Be provided with the II coal dust carrier pipe (5) that top communicates with a compartment in the b compartment; Be provided with the III coal dust carrier pipe (7) that top communicates with the b compartment in the c compartment, the bottom of a, b compartment is provided with strong magnet (10), and the top of c compartment is provided with the exhaust duct (6) with atmosphere; The middle part of a, b, three compartments of c is respectively equipped with filter screen (8), and the bottom of a, b, three compartments of c is respectively equipped with leakage fluid dram (19).

2. ultra micro magnetization foam boring deduster according to claim 1; It is characterized in that: the said filter screen (8) that is located at three compartments middle parts of a, b, c respectively is detachable; The order number of filter screen (8) increases by compartment, and the order number of a compartment filter screen is minimum, and the filter screen order number in the c compartment is maximum.

3. ultra micro magnetization foam boring deduster according to claim 1; It is characterized in that: the caliber of described III coal dust carrier pipe (7) is greater than the caliber of II coal dust carrier pipe (5), and the caliber of II coal dust carrier pipe (5) is greater than the caliber of I coal dust carrier pipe (4).

4. according to claim 1 or 3 described ultra micro magnetization foam boring dedusters; It is characterized in that: the end mouth of described I coal dust carrier pipe (4), II coal dust carrier pipe (5), III coal dust carrier pipe (7) all is horn-like; The contiguous ultra micro magnetization foam arrested dust case of the outlet of III coal dust carrier pipe (7) (12) bottom liquid level; The outlet of II coal dust carrier pipe (5) is higher than the outlet of III coal dust carrier pipe (7), and the outlet of I coal dust carrier pipe (4) is higher than the outlet of II coal dust carrier pipe (5).

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