A comprehensive dust control system for a mine heading machine

Abstract

The present application relates to the technical field of coal mine dust removal, in particular to a comprehensive dust control system for a mine heading machine, comprising a dust control air duct, which is arranged on the main body of the heading machine; a dust removal air sleeve, which is in a cylindrical structure and is fixedly arranged outside the cutting arm of the main body of the heading machine, and comprises an outer sleeve, an inner sleeve and two end rings fixedly arranged between the outer sleeve and the inner sleeve, the outer sleeve, the inner sleeve and the two end rings together form an air extraction cavity, and a plurality of air inlet pipes are arranged on the outer sleeve, the inner ends of the air inlet pipes are connected to the air extraction end of the dust control air duct through an air extraction pipeline, the dust removal air sleeve in the present application is arranged on the cutting arm of the heading machine, so that when the dust control air duct is working, the dust removal air sleeve can absorb the dust generated on the heading face in the first time, and compared with the traditional technology, the dust removal effect of the present application is more timely.

Description

Technical Field

[0001] This invention relates to the field of coal mine dust control technology, specifically to a comprehensive dust control system for mining tunneling machines. Background Technology

[0002] Currently, dust hazards are one of the major disasters in coal mining, affecting not only the physical and mental health of workers but also the safe production of coal mines.

[0003] In existing technologies, dust control in mines is mainly achieved through dust control ducts, which contain fans capable of drawing in air. In practice, the dust control duct is installed near the working face, and an exhaust pipe is connected to its end before the duct is activated. During operation, the dust control duct draws in dust from the working face and exhausts the dust-laden air through the exhaust pipe, thus ensuring the cleanliness of the working face.

[0004] However, existing dust control ducts are typically fixedly installed inside the roadway or on the machine body of the tunneling machine, meaning there is a distance between the duct and the working face. This prevents the duct from effectively absorbing dust generated at the working face. Therefore, we propose a comprehensive dust control system for mining tunneling machines to address these technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a comprehensive dust control system for mining tunneling machines, which solves the problem that existing dust control ducts are too far from the tunneling face to absorb dust generated on the tunneling face in a timely manner.

[0006] The above-mentioned objective of this invention is achieved through the following technical solutions:

[0007] A comprehensive dust control system for mining tunneling machines includes:

[0008] Dust control ventilation duct, which is installed on the main body of the tunneling machine;

[0009] The dust removal air sleeve has a cylindrical structure and is fixedly sleeved on the outside of the cutting arm of the tunneling machine body. The dust removal air sleeve includes an outer wall sleeve, an inner wall sleeve, and two end rings fixedly disposed between the outer wall sleeve and the inner wall sleeve. The outer wall sleeve, the inner wall sleeve, and the two end rings together form an air extraction cavity. The outer wall sleeve is provided with several air inlet pipes. The inner end of the air inlet pipes is connected to the air extraction end of the dust control air duct through an air extraction pipeline.

[0010] A spray ring, wherein the spray ring has a hollow annular structure, is sleeved on the outside of the dust collector sleeve and rotates with it, and nozzles communicating with the interior of the spray ring are provided on the outer ring wall, and the interior of the spray ring communicates with the exhaust cavity; and

[0011] A water supply mechanism, which is connected to the dust removal fan sleeve, is used to supply water to the inside of the dust removal fan sleeve.

[0012] Optionally, one end of the air inlet pipe is located inside the air extraction cavity, and the other end of the air inlet pipe is located outside the air extraction cavity and is provided with a filter cover; there are several groups of air inlet pipes on the dust removal fan sleeve, and each group contains several air inlet pipes, and the several air inlet pipes of each group are evenly distributed along the circumference of the dust removal fan sleeve.

[0013] Optionally, the air extraction pipeline includes an air extraction ring, the number of which corresponds to the number of sets of air inlet pipes. The air extraction ring is also provided with several air extraction pipes that correspond one-to-one with the air inlet pipes and an exhaust pipe. The end of the air extraction pipe is connected to the inner end of the corresponding air inlet pipe, and the exhaust pipe is connected to the air extraction end of the dust control duct. The air extraction ring, air extraction pipes, and exhaust pipes are all made of flexible material.

[0014] Optionally, the exhaust pipe further includes an exhaust port and an exhaust main pipe. The exhaust port passes through one of the end rings and is fixedly connected to the end ring. The exhaust port has an interface at one end outside the exhaust cavity. The number of interfaces at the end of the exhaust port inside the exhaust cavity corresponds to the number of exhaust rings. The outer end of the exhaust port is connected to one end of the exhaust main pipe. Several interfaces at the inner end of the exhaust port are respectively connected to several exhaust pipes. The end of the exhaust main pipe away from the exhaust port is connected to the exhaust end of the dust control duct.

[0015] Optionally, the interior of the air extraction cavity is provided with several tension springs that correspond one-to-one with the air extraction pipes. One end of the tension spring is connected to the corresponding air extraction pipe, and the other end of the tension spring is connected to the inner wall sleeve.

[0016] Optionally, the outer surface of the outer wall sleeve is recessed inward along the circumference to form a rotating groove. A through hole communicating with the air extraction cavity is opened on the groove wall of the rotating groove. A one-way valve is provided at the through hole. The one-way valve only allows fluid to enter the rotating groove from the air extraction cavity. The spray ring is movably disposed in the rotating groove.

[0017] Optionally, sealing rings are fitted onto both inner side walls of the rotating groove, and the two sealing rings are respectively sealed and fitted onto the outer side walls of the spray ring, and a water inlet hole is provided through the inner ring wall of the spray ring.

[0018] Optionally, a connecting rod is fixedly installed on the outer ring wall of the spray ring, and the end of the connecting rod away from the spray ring is fixedly connected to the cutting part of the tunneling machine body.

[0019] Optionally, a dust removal brush is also fixedly provided on the outer ring wall of the spray ring. The dust removal brush is distributed along the axial direction of the dust removal air sleeve, and the bristles of the dust removal brush abut against the outer surface of the dust removal air sleeve.

[0020] Optionally, the water supply mechanism includes a water tank, a water pump, and a water supply pipe. The water tank is installed on the main body of the tunneling machine, the water pump is located inside the water tank, one end of the water supply pipe is connected to the outlet of the water pump, and the other end is connected to the inlet of one end of the dust removal air sleeve.

[0021] Compared with the prior art, the present invention provides a comprehensive dust control system for mining tunneling machines, which has the following beneficial effects:

[0022] 1. The dust removal air sleeve in this invention is installed on the cutting arm of the tunneling machine. Therefore, when the dust control air duct is working, the dust removal air sleeve can absorb the dust generated on the tunneling face in the first time. Compared with traditional technology, the dust removal effect of this invention is more timely.

[0023] 2. In this invention, the spray ring rotates in conjunction with the dust removal fan sleeve, and the spray ring can spray water mist outward through the nozzle, thereby reducing dust through water mist, thus enriching the dust removal means of this invention;

[0024] 3. In this invention, the spray ring is connected to the cutting part via a connecting rod, so the spray ring can rotate synchronously with the cutting part. The rotation of the spray ring can also drive the cleaning brush, thereby preventing large particles of impurities from clogging the filter cover.

[0025] 4. The spray ring in this invention can rotate synchronously with the cutting part during operation. The rotation of the spray ring allows the water mist sprayed from the nozzle to be more evenly dispersed in the air, which increases the spray range of the water mist and thus helps to improve the water mist dust removal efficiency.

[0026] 5. In this invention, the air extraction ring, air extraction pipe, and exhaust pipe are all located inside the air extraction cavity. When water flows into the air extraction cavity, it can cause the above-mentioned pipes to vibrate, thereby preventing dust from accumulating or adhering to the inner wall of the pipes and playing a dust removal role. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is a schematic diagram showing the dust collector fan sleeve in use according to the present invention;

[0029] Figure 3 This is a schematic diagram of the assembly of the dust removal fan sleeve and spray ring of the present invention;

[0030] Figure 4 This is a cross-sectional view of the dust removal fan sleeve structure of the present invention;

[0031] Figure 5This is a schematic diagram of the vacuum ring structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the air extraction port structure of the present invention;

[0033] Figure 7 for Figure 4 Enlarged view of point A in the middle;

[0034] Figure 8 for Figure 4 Enlarged view of point B in the middle;

[0035] Figure 9 This is a schematic diagram of the tension spring structure of the present invention.

[0036] In the diagram: 100, Dust control duct; 101, Exhaust hose; 200, Tunneling machine body; 300, Dust removal duct sleeve; 301, Outer wall sleeve; 302, Inner wall sleeve; 303, End ring; 304, Air inlet pipe; 305, Filter cover; 306, Tension spring; 307, Rotating groove; 308, One-way valve; 309, Sealing ring; 310, Water inlet; 400, Spray ring; 401, Nozzle; 402, Water inlet hole; 403, Connecting rod; 404, Dust removal brush; 405, Blocking ring; 500, Air extraction pipeline; 501, Air extraction ring; 502, Air extraction pipe; 503, Exhaust pipe; 504, Air extraction port; 505, Main air extraction pipe; 600, Water supply mechanism; 601, Water tank; 602, Water pump; 603, Water supply pipe. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example: Please refer to Figures 1-9 The present invention provides a technical solution: a comprehensive dust control system for a mining tunneling machine, including a dust control duct 100, which is installed on the main body 200 of the tunneling machine. The dust control duct 100 is equipped with a fan (not shown in the figure) inside. The bottom of the dust control duct 100 is provided with a connecting seat, which is fixedly connected to the top of the main body 200 of the tunneling machine by bolts. Furthermore, the exhaust end of the dust control duct 100 is connected to an exhaust hose 101, and the free end of the exhaust hose 101 can extend to a position away from the tunneling working face. When the fan is working, the dust control duct 100 can draw in polluted air and discharge the air through the exhaust hose 101.

[0039] This embodiment also includes a dust removal fan sleeve 300. The dust removal fan sleeve 300 has a cylindrical structure and is fixedly sleeved on the outside of the cutting arm of the tunneling machine body 200. The dust removal fan sleeve 300 includes an outer wall sleeve 301, an inner wall sleeve 302, and two end rings 303 fixedly disposed between the outer wall sleeve 301 and the inner wall sleeve 302. Specifically, the end rings 303 are welded and fixed to the outer wall sleeve 301 and the inner wall sleeve 302. The outer wall sleeve 301, the inner wall sleeve 302, and the two end rings 303 together form a dust removal fan sleeve. The dust collector sleeve 300 has an air cavity, and its outer wall sleeve 301 is equipped with several air inlet pipes 304. One end of each air inlet pipe 304 is located inside the air cavity, and the other end is located outside the air cavity and is equipped with a filter cover 305. The function of the filter pipes 304 is to filter large particulate impurities and prevent them from entering the air cavity. There are four groups of air inlet pipes 304 on the dust collector sleeve 300, and each group contains several air inlet pipes 304. These air inlet pipes 304 are evenly distributed along the circumference of the dust collector sleeve 300. Figure 3 As shown, the inner end of the air inlet pipe 304 is connected to the air extraction end of the dust control duct 100 through the air extraction pipe 500, that is, the dust control duct 100 can draw in polluted air through the air extraction pipe 500 and the air inlet pipe 304.

[0040] Based on the above embodiment, the suction pipe 500 includes suction rings 501, the number of which corresponds to the number of intake pipes 304, i.e., there are four suction rings 501 in total. Each suction ring 501 is also provided with several suction pipes 502 corresponding one-to-one with the intake pipes 304, and one exhaust pipe 503, as shown below. Figure 5 As shown, the end of the extraction pipe 502 is connected to the inner end of the corresponding intake pipe 304, and the exhaust pipe 503 is connected to the extraction end of the dust control duct 100; specifically, the extraction pipe 500 also includes an extraction port 504 and an extraction main pipe 505. The extraction port 504 passes through one of the end rings 303 and is welded and fixed to the end ring 303. The shape of the extraction port 504 is as follows: Figure 6 As shown, the exhaust port 504 has an interface at one end outside the exhaust cavity, and the number of interfaces at the end of the exhaust port 504 inside the exhaust cavity corresponds to the number of exhaust rings 501. The outer end of the exhaust port 504 is connected to one end of the exhaust main pipe 505, and several interfaces at the inner end of the exhaust port 504 are respectively connected to several exhaust pipes 503. Furthermore, the end of the exhaust main pipe 505 away from the exhaust port 504 is connected to the exhaust end of the dust control duct 100. Therefore, when the dust control duct 100 is working, outside air can enter the dust control duct 100 in sequence through the inlet pipe 304, the exhaust pipe 502, the exhaust ring 501, the exhaust pipe 503, the exhaust port 504, and the exhaust main pipe 505.

[0041] Additionally, it is worth mentioning that the suction ring 501, suction pipe 502, and exhaust pipe 503 are all made of flexible materials, such as rubber. The suction cavity also contains several tension springs 306 corresponding to the suction pipes 502. One end of each tension spring 306 is connected to the corresponding suction pipe 502, and the other end is connected to the inner wall sleeve 302. This connection point is located near the direction of water flow. Figure 8 As shown, one end of the tension spring 306 has a hook that is compatible with the suction pipe 502. In actual use, the hook can be put on the outside of the suction pipe 502. The function of the tension spring 306 is to limit the position of the suction ring 501 and prevent the water flow from entering the suction cavity and washing the suction ring 501 to a corner.

[0042] This embodiment also includes a spray ring 400, which has a hollow annular structure. The spray ring 400 is sleeved on the outside of the dust removal sleeve 300 and rotates with it. Specifically, the outer surface of the outer sleeve 301 is recessed inward along the circumference to form a rotating groove 307. The groove wall of the rotating groove 307 is provided with a through hole communicating with the air extraction cavity. A one-way valve 308 is provided at the through hole. The one-way valve 308 only allows fluid to enter the rotating groove 307 from the air extraction cavity. The spray ring 400 is movably disposed in the rotating groove 307. The outer ring wall of the spray ring 400 is provided with a nozzle 401 communicating with the inside of the spray ring 400. The inside of the spray ring 400 is communicating with the air extraction cavity, that is, a water inlet hole 402 is provided through the inner ring wall of the spray ring 400. Therefore, the spray ring 400 is connected to the air extraction cavity through the water inlet hole 402 and the one-way valve 308. When water flows into the air extraction cavity, it can enter the spray ring 400 through the one-way valve 308 and the water inlet 402, and finally spray water mist through the nozzle 401, thereby playing a role in dust suppression.

[0043] In addition, sealing rings 309 are fitted on both sides of the inner side wall of the rotating groove 307. The sealing rings 309 are made of rubber. The two sealing rings 309 are respectively sealed and fitted to the outer side walls of the spray ring 400. A blocking ring 405 is also provided on the outer wall of the spray ring 400. The blocking ring 405 is fitted to the outer wall of the dust removal air sleeve 300. Its function is to improve the stability of the spray ring 400 when rotating and prevent it from shaking with the dust removal air sleeve 300.

[0044] Furthermore, a connecting rod 403 is fixedly installed on the outer ring wall of the spray ring 400. The end of the connecting rod 403 away from the spray ring 400 is fixedly connected to the cutting part of the tunneling machine body 200. Therefore, when the cutting part rotates, the spray ring 400 can be rotated through the connecting rod 403. A dust cleaning brush 404 is also fixedly installed on the outer ring wall of the spray ring 400. The dust cleaning brush 404 is distributed along the axial direction of the dust removal air sleeve 300, and the bristles of the dust cleaning brush 404 abut against the outer surface of the dust removal air sleeve 300. Therefore, when the spray ring 400 rotates, it can drive the dust cleaning brush 404 to rotate around the dust removal air sleeve 300, thereby cleaning the outer surface of the dust removal air sleeve 300 and the filter cover 305, and preventing the filter cover 305 from becoming blocked.

[0045] This embodiment also includes a water supply mechanism 600, which is connected to the dust removal air jacket 300 and is used to supply water to the interior of the dust removal air jacket 300. Specifically, the water supply mechanism 600 includes a water tank 601, a water pump 602, and a water supply pipe 603. The water tank 601 is installed on the main body 200 of the tunneling machine, and the water pump 602 is located inside the water tank 601. One end of the water supply pipe 603 is connected to the outlet end of the water pump 602, and the other end is connected to the inlet 310 at one end of the dust removal air jacket 300. The inlet 310 and the air extraction port 504 are located on the same end ring 303. Therefore, the water supply mechanism 600 can supply water to the interior of the air extraction cavity through the water supply pipe 603. The water flow entering the air extraction cavity can enter the spray ring 400 through the one-way valve 308 and the water inlet 402, and finally be sprayed out in the form of water mist through the nozzle 401.

[0046] In summary, in practical use of this embodiment, when the exhaust-type dust removal method is required, the dust control duct 100 needs to be turned on. After the dust control duct 100 is turned on, external air can sequentially enter the dust control duct 100 through the air inlet pipe 304, the exhaust pipe 502, the exhaust ring 501, the exhaust pipe 503, the exhaust port 504, and the exhaust main pipe 505, thereby removing the dust generated at the tunneling face. When the water mist-type dust removal method is required, the water pump 602 in the water tank 601 can be turned on, thereby sending the water in the water tank 601 into the exhaust cavity through the water supply pipe 603. The water entering the exhaust cavity then enters the spray ring 400 through the one-way valve 308 and the water inlet 402, and finally is sprayed out in the form of water mist through the nozzle 401, thereby achieving the effect of dust suppression. It is worth mentioning that, in addition to having both air extraction and water mist dust removal functions, this embodiment also has the ability to prevent dust from adhering to the inner walls of the pipes by means of vibration when water mist dust removal is performed. This effectively ensures the normal operation of the air extraction dust removal method.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A comprehensive dust control system for mining tunneling machines, characterized in that, include: A dust control duct (100) is installed on the main body (200) of the tunneling machine; A dust removal fan sleeve (300) is cylindrical in shape and is fixedly sleeved on the outside of the cutting arm of the tunneling machine body (200). The dust removal fan sleeve (300) includes an outer wall sleeve (301), an inner wall sleeve (302), and two end rings (303) fixedly disposed between the outer wall sleeve (301) and the inner wall sleeve (302). The outer wall sleeve (301), the inner wall sleeve (302), and the two end rings (303) together form an air extraction cavity. The outer wall sleeve (301) is provided with a plurality of air inlet pipes (304). The inner end of the air inlet pipe (304) is connected to the air extraction end of the dust control fan duct (100) through an air extraction pipe (500). A spray ring (400) has a hollow annular structure. The spray ring (400) is fitted around the outside of the dust collector sleeve (300) and rotates with it. Nozzles (401) communicating with the interior of the spray ring (400) are provided on the outer ring wall of the spray ring (400), and the interior of the spray ring (400) communicates with the extraction cavity. A water supply mechanism (600) is connected to the dust removal fan sleeve (300) and is used to supply water to the interior of the dust removal fan sleeve (300); The exhaust pipe (500) includes an exhaust ring (501), the number of which corresponds to the number of sets of air inlet pipes (304). The exhaust ring (501) is also provided with several exhaust pipes (502) corresponding one-to-one with the air inlet pipes (304) and an exhaust pipe (503). The end of the exhaust pipe (502) is connected to the inner end of the corresponding air inlet pipe (304), and the exhaust pipe (503) is connected to the exhaust end of the dust control duct (100). The exhaust ring (501), exhaust pipes (502) and exhaust pipe (503) are all made of flexible material. The exhaust pipe (500) further includes an exhaust port (504) and an exhaust main pipe (505). The exhaust port (504) passes through one of the end rings (303) and is fixedly connected to the end ring (303). The exhaust port (504) has an interface at one end outside the exhaust cavity. The number of interfaces at the end of the exhaust port (504) inside the exhaust cavity corresponds to the number of exhaust rings (501). The outer end of the exhaust port (504) is connected to one end of the exhaust main pipe (505). Several interfaces at the inner end of the exhaust port (504) are respectively connected to several exhaust pipes (503). The end of the exhaust main pipe (505) away from the exhaust port (504) is connected to the exhaust end of the dust control duct (100).

2. The integrated dust control system for a mining tunneling machine according to claim 1, characterized in that: One end of the air inlet pipe (304) is located inside the air extraction cavity, and the other end of the air inlet pipe (304) is located outside the air extraction cavity and is provided with a filter cover (305); there are several groups of air inlet pipes (304) on the dust removal fan sleeve (300), and each group contains several air inlet pipes (304), and the several air inlet pipes (304) in each group are evenly distributed along the circumference of the dust removal fan sleeve (300).

3. The integrated dust control system for a mining tunneling machine according to claim 2, characterized in that: The air extraction cavity is provided with several tension springs (306) that correspond one-to-one with the air extraction pipe (502). One end of the tension spring (306) is connected to the corresponding air extraction pipe (502), and the other end of the tension spring (306) is connected to the inner wall sleeve (302).

4. The integrated dust control system for a mining tunneling machine according to claim 1, characterized in that: The outer surface of the outer sleeve (301) is recessed inward along the circumference to form a rotating groove (307). The groove wall of the rotating groove (307) is provided with a through hole communicating with the air extraction cavity. A one-way valve (308) is provided at the through hole. The one-way valve (308) only allows fluid to enter the rotating groove (307) from the air extraction cavity. The spray ring (400) is movably disposed in the rotating groove (307).

5. The integrated dust control system for a mining tunneling machine according to claim 4, characterized in that: Sealing rings (309) are fitted to both sides of the inner side wall of the rotating groove (307). The two sealing rings (309) are respectively sealed to the outer side wall of the spray ring (400), and a water inlet hole (402) is provided through the inner ring wall of the spray ring (400).

6. The integrated dust control system for a mining tunneling machine according to claim 5, characterized in that: A connecting rod (403) is fixedly installed on the outer ring wall of the spray ring (400), and the end of the connecting rod (403) away from the spray ring (400) is fixedly connected to the cutting part of the tunneling machine body (200).

7. The integrated dust control system for a mining tunneling machine according to claim 6, characterized in that: A cleaning brush (404) is also fixedly provided on the outer ring wall of the spray ring (400). The cleaning brush (404) is distributed along the axial direction of the dust removal sleeve (300), and the bristles of the cleaning brush (404) abut against the outer surface of the dust removal sleeve (300).

8. The integrated dust control system for a mining tunneling machine according to claim 1, characterized in that: The water supply mechanism (600) includes a water tank (601), a water pump (602), and a water supply pipe (603). The water tank (601) is installed on the main body (200) of the tunneling machine. The water pump (602) is located inside the water tank (601). One end of the water supply pipe (603) is connected to the outlet of the water pump (602), and the other end is connected to the inlet (310) of one end of the dust removal air sleeve (300).

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