Intelligent closed dust suppression device for transfer points of scraper conveyors and belt conveyors for mining

Abstract

The present invention discloses an intelligent closed dust reduction device for the transfer point of a scraper conveyor and a belt conveyor for mining, comprising a closed box and a dust suppressant atomizing assembly, a self-moving spray assembly, a dry dust collector, and a dust concentration sensor assembly arranged in the closed box; the closed box is set up at the transfer point of the scraper conveyor and the belt conveyor; the dry dust collector is respectively provided with a first guide rail exhaust port and a second guide rail exhaust port corresponding to the scraper conveyor and the belt conveyor. Dust reduction treatment is carried out at the transfer point of the scraper conveyor and the belt conveyor in a closed environment, and dust reduction is carried out at a fixed point by detecting dust concentration. Various dust suppression measures are carried out along with the transportation of coal blocks, and the comprehensive effects of spraying dust suppressants, water mist, and the exhaust ports corresponding to the two conveyors are coordinated to carry out closed dust reduction treatment at the transfer point of the scraper conveyor and the belt conveyor, thereby reducing the pollution of the working environment and the surrounding air by coal dust.

Description

Technical Field

[0001] The present invention relates to the technical field of closed dust suppression devices, and in particular to an intelligent closed dust suppression device for transfer points of mining scraper conveyors and belt conveyors. Background Art

[0002] At present, the coal mined from the fully mechanized mining face in underground coal mines is usually transported to the belt conveyor by a scraper conveyor, and then enters the crusher and is transported to the surface. When the coal is transferred, there is a certain height difference between the scraper conveyor and the belt conveyor. When the coal falls, a large amount of coal dust will be generated and flow to the air-using location with the roadway wind flow, causing roadway wind flow pollution and coal dust accumulation, which seriously endangers the working environment and the health of the workers. Summary of the invention

[0003] In view of the defects of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide an intelligent closed dust reduction device for the transfer points of mining scraper conveyors and belt conveyors, to carry out dust reduction treatment at the transfer points of scraper conveyors and belt conveyors in a closed environment, and to carry out fixed-point dust reduction by detecting dust concentration.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: an intelligent closed dust reduction device for the transfer point of a scraper conveyor and a belt conveyor for mining, comprising a closed box and a dust suppressant atomizing component, a self-moving spray component, a dry dust collector, and a dust concentration sensor component arranged in the closed box; the closed box is erected at the transfer point of the scraper conveyor and the belt conveyor, and the closed box is respectively provided with a feed port and a discharge port at the position of the scraper conveyor and the belt conveyor, and the feed port and the discharge port are respectively provided with a feed port dust curtain and a discharge port dust curtain to realize a closed environment; the dust suppressant atomizing component comprises a dust suppressant atomizing nozzle, and the dust suppressant atomizing nozzle is arranged above the feed port, and when the coal block enters from the feed port, the dust suppressant atomizing nozzle can spray atomized dust suppressant on the coal block Dust agent; the self-moving spray assembly includes a self-moving atomizing nozzle and a spray slide rail, the self-moving atomizing nozzle can be slidably installed on the spray slide rail, and the spray slide rail is installed above the scraper conveyor and the belt conveyor along the coal block transportation track; the dry dust collector is respectively provided with a first guide rail exhaust port and a second guide rail exhaust port corresponding to the scraper conveyor and the belt conveyor, and the first guide rail exhaust port and the second guide rail exhaust port can both move back and forth along the corresponding conveyor transportation track to extract dust from different positions; the dust concentration sensing assembly includes a plurality of dust concentration sensors arranged along the conveyor transportation track, and through the detection of the dust concentration sensor, the self-moving spray assembly, the first guide rail exhaust port and the second guide rail exhaust port can be adjusted in position according to the dust concentration.

[0005] Preferably, the outer contour of the closed box is a cuboid, the feed port and the discharge port are both rectangular and the opening sizes match the transport belt of the corresponding conveyor, so as to better achieve closure at the transfer point while transporting coal blocks.

[0006] Preferably, the scraper conveyor and the belt conveyor are arranged in a vertical direction, and the feed port and the discharge port are arranged on adjacent side walls of the closed box.

[0007] Preferably, the dust suppressant atomization assembly also includes a dust suppressant spray duct, which is arranged above the feed port and connected to the external water supply pipeline to form a rectangle. Two dust suppressant atomization nozzles are installed at the end of the dust suppressant spray duct so that the injection section of the dust suppressant atomization nozzle is located obliquely above the left and right sides of the feed port. Dust suppressant is sprayed on the coal blocks from the obliquely above the left and right sides so that the dust suppressant can better combine with the dust.

[0008] Preferably, the self-moving atomizing nozzle is slidably disposed on a spray rail via a retractable pipe. The self-moving atomizing nozzle is provided with three nozzles and can rotate relative to the retractable pipe, which is beneficial for spraying and suppressing dust at different positions.

[0009] Preferably, the first guide rail exhaust port is arranged on the guide rail of the first guide rail exhaust port to realize back and forth movement along the transport track of the scraper conveyor, and the second guide rail exhaust port is arranged on the guide rail of the second guide rail exhaust port to realize back and forth movement along the transport track of the belt conveyor, so that the walking position can be conveniently controlled by walking on the track.

[0010] Preferably, first guide-type air exhaust vent guide rail baffles are provided at both ends of the first guide-type air exhaust vent guide rail to prevent the first guide-type air exhaust vent from escaping, and second guide-type air exhaust vent guide rail baffles are provided at both ends of the second guide-type air exhaust vent guide rail to prevent the second guide-type air exhaust vent from escaping.

[0011] Preferably, the dry dust collector is arranged outside the closed box, one end of the dry dust collector is connected to the first guide rail exhaust port and the second guide rail exhaust port through an exhaust duct, and the other end of the dry dust collector is provided with an exhaust fan to intervene in and guide the flow direction of dust.

[0012] Preferably, a plurality of the dust concentration sensors are spaced apart between the first guide rail exhaust port and the scraper conveyor, and between the second guide rail exhaust port and the belt conveyor, and a dust concentration sensor is provided at the transfer point between the scraper conveyor and the belt conveyor.

[0013] Preferably, the air outlets of the first guide-rail exhaust vent and the second guide-rail exhaust vent are both upwardly inclined bell-shaped outlets and can be adjusted up and down to enhance the effect of exhausting dust.

[0014] Beneficial effects of the present invention:

[0015] 1) Set up the closed box at the transfer point of the scraper conveyor and the belt conveyor, and use dust curtains to seal the inlet and outlet, creating a closed environment to confine the dust in the internal space of the box and prevent the dust from spreading to the surrounding air;

[0016] 2) When the coal blocks enter from the feed port, the dust suppressant is sprayed on the coal blocks to form a layer of wet protective film to suppress the flying of dust. In combination with the detection of the dust concentration sensor, the first rail-type exhaust port is opened to move to the corresponding position to absorb dust particles. At the same time, the self-moving atomizing nozzle automatically moves to the position with high dust concentration according to the adaptive system and opens to effectively spray water mist to avoid wasting water resources. Furthermore, by setting a retractable tube, the height is adjusted according to the position of the dust concentration. The water mist is combined with the dust to increase its own weight and fall onto the conveying belt of the belt conveyor under the action of gravity, effectively preventing coal dust from polluting the air in the box;

[0017] 3) When the coal blocks undergo free fall at the transfer point, a large amount of dust particles will be generated. The dust concentration sensor at the transfer point will monitor the dust concentration and the self-moving atomizing nozzle will spray water mist to reduce dust. The second guide rail exhaust port will be opened for the coal dust particles that are not perfectly combined with the water mist to move along the transportation track for adsorption treatment, which can effectively prevent the coal dust from polluting the external working environment and endangering human health from the discharge port;

[0018] 4) The self-moving spray assembly, the first rail exhaust port, and the second rail exhaust port move and start working according to the detection results of the dust concentration sensors at different positions, so as to realize the self-adaptation and self-regulation of the device. No manual monitoring is required, and the device is intelligent, which avoids the harm of dust to the health of workers. When the dust concentration does not reach the treatment concentration, no subsequent dust suppression work is carried out, which saves energy and reduces emissions and avoids waste of resources.

[0019] 5) Various dust suppression measures are implemented along with the transportation of coal blocks, with the coordinated effects of spraying dust suppressants, water mist and the exhaust vents corresponding to the two conveyors. Closed dust reduction treatment is carried out at the transfer points of the scraper conveyor and the belt conveyor to reduce the pollution of coal dust to the working environment and surrounding air. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 for Figure 2 A top view of

[0023] Figure 4It is a schematic diagram of the assembly of a scraper conveyor and a belt conveyor;

[0024] Figure 5 It is a schematic diagram of the assembly of the dust suppressant atomizing nozzle and the dust suppressant spraying duct;

[0025] Figure 6 It is a schematic diagram of the assembly of the first guide rail type air exhaust vent and the second guide rail type air exhaust vent;

[0026] Figure 7 It is a schematic diagram of the structure of the dust concentration sensor;

[0027] Figure 8 It is a schematic diagram of the assembly of the self-moving atomizing nozzle;

[0028] Fig. 9 It is a structural schematic diagram of a self-moving atomizing nozzle;

[0029] In the figure: 1-enclosed box, 2-dust suppressant atomizing nozzle, 3-feeding port dust curtain, 4-dust suppressant spray duct, 5-scraper conveyor, 6-belt conveyor, 7-discharging port dust curtain, 8-first guide rail exhaust port, 9-exhaust duct, 10-dust concentration sensor, 11-dry dust collector, 12-exhaust fan, 13-self-moving atomizing nozzle, 14 second guide rail exhaust port, 15-spray slide rail, 16-first guide rail exhaust port guide rail, 17-first guide rail exhaust port guide baffle, 18-second guide rail exhaust port guide rail, 19-second guide rail exhaust port guide baffle, 20-retractable duct. DETAILED DESCRIPTION

[0030] In order to better understand the improvements made by the present invention relative to the prior art, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] like Figure 1 As shown in —3, the intelligent closed dust suppression device for the transfer point of the scraper conveyor and the belt conveyor for mining is mainly composed of a closed box 1 and a dust suppressant atomization component, a self-propelled spray component, a dry dust collector 11, and a dust concentration sensor component arranged in the closed box 1.

[0032] The closed box 1 has a rectangular outer contour and is installed at the transfer point of the scraper conveyor 5 and the belt conveyor 6. The closed box 1 is provided with a feed inlet and a discharge inlet at the positions of the scraper conveyor 5 and the belt conveyor 6, respectively. Figure 4As shown, the scraper conveyor 5 and the belt conveyor 6 are arranged in a vertical direction, and the feed port and the discharge port are arranged on the adjacent side walls of the closed box 1. In order to achieve a closed environment, the feed port and the discharge port are respectively provided with a feed port dust curtain 3 and a discharge port dust curtain 7, and the feed port and the discharge port are both rectangular and the opening size matches the conveying belt of the corresponding conveyor, which can effectively prevent dust from escaping from the feed port or the discharge port, thereby reducing the environmental pollution caused by the dust spreading to the external environment of the box.

[0033] like Figure 5 As shown, the dust suppressant atomizing assembly is mainly composed of a dust suppressant spray conduit 4 and two dust suppressant atomizing nozzles 2. The dust suppressant spray conduit 4 is arranged above the feed port and is connected to the external water supply pipeline to form a rectangle. The two dust suppressant atomizing nozzles 2 are installed at the end of the dust suppressant spray conduit 4 so that the spray section of the dust suppressant atomizing nozzle is located obliquely above the left and right sides of the feed port. When the coal block enters the interior of the closed box 1 from the feed port, the dust suppressant atomizing nozzles 2 on both sides start to work and spray atomized dust suppressant on the coal block. The dust suppressant has good wettability and permeability, and can quickly combine with dust particles to form a layer of moist protective film, thereby suppressing the flying of dust.

[0034] like Figure 8 As shown in FIG. 9 , the self-moving spray assembly is mainly composed of a self-moving atomizing nozzle 13 and a spraying slide 15. The self-moving atomizing nozzle 13 is slidably mounted on the spraying slide 15. The spraying slide 15 is mounted above the scraper conveyor 5 and the belt conveyor 6 along the coal block transportation track. The self-moving atomizing nozzle 13 is slidably mounted on the spraying slide 15 through a telescopic pipe 20, and the self-moving atomizing nozzle 13 is provided with three nozzles and can rotate relative to the telescopic pipe 20. Due to the different sizes and heights of the coal blocks during transportation, conventional spraying cannot adjust the spraying height according to the height of the coal blocks, which sometimes causes waste of water resources. The self-moving atomizing nozzle 13 installed through the telescopic pipe 20 can grasp the position with high dust concentration according to the adaptive system, and adjust the height of the self-moving atomizing nozzle 13, effectively spraying water mist, and the water mist combines with the dust to increase the dust's own weight and falls onto the conveying belt of the belt conveyor under the action of gravity, effectively preventing coal dust from polluting the air in the box.

[0035] like Figure 6As shown, the dry dust collector 11 is arranged outside the closed box 1 and is provided with a first rail-type exhaust port 8 and a second rail-type exhaust port 14 corresponding to the scraper conveyor 5 and the belt conveyor 6, respectively. One end of the dry dust collector 11 is connected to the first rail-type exhaust port 8 and the second rail-type exhaust port 14 through an exhaust duct 9. The other end of the dry dust collector 11 is provided with an exhaust fan 12 to intervene and guide the flow of dust, and three to four ducts are connected to the exhaust duct 9 at the bottom of each exhaust port. The first rail-type exhaust port 8 and the second rail-type exhaust port 14 are respectively located on one side of the scraper conveyor and the belt conveyor, and can move back and forth along the corresponding conveyor transport track to extract dust from different positions.

[0036] The first guide-type exhaust port 8 is arranged on the first guide-type exhaust port guide rail 16 to realize back and forth movement along the transport track of the scraper conveyor 5, and the second guide-type exhaust port 14 is arranged on the second guide-type exhaust port guide rail 18 to realize back and forth movement along the transport track of the belt conveyor 6, and the first guide-type exhaust port guide rail baffle 17 is provided at both ends of the first guide-type exhaust port guide rail 16 to prevent the first guide-type exhaust port 8 from falling out, and the second guide-type exhaust port guide rail baffle 19 is provided at both ends of the second guide-type exhaust port guide rail 18 to prevent the second guide-type exhaust port 14 from falling out. In order to better extract dust, the air outlets of the first guide-type exhaust port 8 and the second guide-type exhaust port 14 are both upwardly inclined bell mouths and can be adjusted up and down.

[0037] The dust concentration sensor assembly is mainly composed of a number of dust concentration sensors 10 arranged along the conveyor transport track. Through the detection of the dust concentration sensor 10, the self-propelled spray assembly, the first guide-type exhaust port 8, and the second guide-type exhaust port 14 can be adjusted according to the dust concentration to achieve self-adaptation and self-adjustment. A number of dust concentration sensors 10 are arranged at intervals between the first guide-type exhaust port 8 and the scraper conveyor 5, between the second guide-type exhaust port 14 and the belt conveyor 6, and a dust concentration sensor 10 is provided at the transfer point between the scraper conveyor 5 and the belt conveyor 6.

[0038] The conveying belt of the scraper conveyor 5 enters the interior of the closed box 1 through the feed port, and transports the coal blocks to the belt conveyor 6 with a height difference. The conveying belt of the belt conveyor 6 leaves the closed box 1 through the discharge port for the next step of transportation. The entire transportation process is in the closed box 1, and the coal dust is confined to the internal space of the closed box 1, effectively preventing the coal dust from floating around under the conditions of wind flow movement in the tunnel and height difference at the transfer point, thereby polluting the working environment and endangering the health of the workers. After the coal blocks enter the interior of the closed box 1, the dust suppressant atomizing nozzle 2 starts to work, spraying the dust suppressant to form a layer of moist protective film, thereby suppressing the flying of dust. After the coal blocks pass through the feed port, they pass through the dust concentration sensor 10. After the dust concentration reaches the critical value, the first guide rail exhaust port 8 starts to work, and can be continuously moved and operated according to the monitoring of the dust concentration sensor 10 at different positions. At the same time, the height of the exhaust port can be adjusted up and down, and the exhaust fan 12 is used to intervene and guide the flow direction of the coal dust particles, so that the coal dust particles are sucked into the exhaust duct 9 and then enter the dry dust collector 11 for filtration and discharge. When the coal block undergoes free fall motion, a large amount of dust particles will be generated. The dust concentration sensor 10 at the transfer point monitors the dust concentration. When the critical value is reached, the self-moving atomizing nozzle 13 is automatically turned on. The self-moving atomizing nozzle 13 sprays water mist downward and in the surrounding area below. The self-moving atomizing nozzle 13 can adjust the position through the adaptive system and the spray slide 15 and adjust the height through the retractable pipe 20. The water mist sprayed by the self-moving atomizing nozzle 13 has wettability and combines with the coal dust particles to increase the weight of the dust particles themselves. The dust particles finally sink to the belt conveyor 6 under the action of gravity to reduce flying. When the coal block is transported on the belt conveyor 6, the dust concentration sensor 10 at this location monitors the dust concentration. The second guide rail exhaust port 14 is activated according to the dust concentration to capture dust. The coal dust particles that fail to perfectly combine with the water mist are sucked into the exhaust pipe 9 and then discharged after adsorption and filtration by the dry dust collector 11, effectively preventing dust from polluting the external working environment and endangering human health.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Intelligent closed dust suppression device for transfer points of mining scraper conveyors and belt conveyors, characterized by: The invention comprises a closed box (1) and a dust suppressant atomizing assembly, a self-propelled spray assembly, a dry dust collector (11), and a dust concentration sensor assembly arranged in the closed box (1); the closed box (1) is erected at the transfer point of a scraper conveyor (5) and a belt conveyor (6); the closed box (1) is provided with a feed port and a discharge port at the positions of the scraper conveyor (5) and the belt conveyor (6), respectively, and the feed port and the discharge port are provided with a feed port dust blocking curtain (3) and a discharge port dust blocking curtain (7) respectively to realize a closed environment; the dust suppressant atomizing assembly comprises a dust suppressant atomizing nozzle (2), the dust suppressant atomizing nozzle (2) is arranged above the feed port, and when coal blocks enter from the feed port, the dust suppressant atomizing nozzle (2) can spray atomized dust suppressant to the coal blocks; the self-propelled spray assembly comprises a self-propelled atomizing nozzle (13) and a spray slide rail (15), the The self-propelled atomizing nozzle (13) can be slidably mounted on a spray slide rail (15), and the spray slide rail (15) is mounted above a scraper conveyor (5) and a belt conveyor (6) along a coal block transport track; the dry dust collector (11) is provided with a first guide rail exhaust port (8) and a second guide rail exhaust port (14) corresponding to the scraper conveyor (5) and the belt conveyor (6), respectively, and the first guide rail exhaust port (8) and the second guide rail exhaust port (14) can both move back and forth along the corresponding conveyor transport track to extract dust from different positions; the dust concentration sensing component includes a plurality of dust concentration sensors (10) arranged along the conveyor transport track, and through detection by the dust concentration sensor (10), the position of the self-propelled spray component, the first guide rail exhaust port (8), and the second guide rail exhaust port (14) can be adjusted according to the dust concentration; The self-moving atomizing nozzle (13) is slidably arranged on the spray slide rail (15) via a telescopic pipe (20); the self-moving atomizing nozzle (13) is provided with three spray heads and is rotatable relative to the telescopic pipe (20); The first guide rail type air outlet (8) is arranged on the first guide rail type air outlet guide rail (16) to realize back and forth movement along the transport track of the scraper type conveyor (5), and the second guide rail type air outlet (14) is arranged on the second guide rail type air outlet guide rail (18) to realize back and forth movement along the transport track of the belt type conveyor (6); The air outlets of the first guide rail type air outlet (8) and the second guide rail type air outlet (14) are both upwardly inclined bell-shaped outlets and can be adjusted up and down.

2. The intelligent closed dust suppression device for transfer points of mining scraper conveyors and belt conveyors according to claim 1 is characterized in that: The outer contour of the closed box (1) is a rectangular parallelepiped, and the feed inlet and the discharge outlet are both rectangular, and the opening sizes are matched with the transport belt of the corresponding conveyor.

3. The intelligent closed dust suppression device for transfer points of mining scraper conveyors and belt conveyors according to claim 2 is characterized in that: The scraper conveyor (5) and the belt conveyor (6) are arranged in a vertical direction, and the feed inlet and the discharge outlet are arranged on the adjacent side walls of the closed box body (1).

4. The intelligent closed dust suppression device for transfer points of mining scraper conveyors and belt conveyors according to claim 1 is characterized in that: The dust suppressant atomizing assembly further comprises a dust suppressant spray conduit (4), wherein the dust suppressant spray conduit (4) is arranged above the feed inlet and is connected to an external water supply pipeline to form a rectangle, and two dust suppressant atomizing nozzles (2) are installed at the ends of the dust suppressant spray conduit (4) so ​​that the spray section of the dust suppressant atomizing nozzle is located obliquely above the left and right sides of the feed inlet.

5. The intelligent closed dust suppression device for transfer points of mining scraper conveyors and belt conveyors according to claim 1 is characterized in that: First guide-type air vent guide rail baffles (17) are provided at both ends of the first guide-type air vent guide rail (16) for preventing the first guide-type air vent (8) from falling out, and second guide-type air vent guide rail baffles (19) are provided at both ends of the second guide-type air vent guide rail (18) for preventing the second guide-type air vent (14) from falling out.

6. The intelligent closed dust suppression device for transfer points of mining scraper conveyors and belt conveyors according to claim 1 is characterized in that: The dry dust collector (11) is arranged outside the closed box (1); one end of the dry dust collector (11) is connected to the first guide rail type air outlet (8) and the second guide rail type air outlet (14) through an exhaust duct (9); and the other end of the dry dust collector (11) is provided with an exhaust fan (12) to intervene in and guide the flow direction of dust.

7. The intelligent closed dust suppression device for transfer points of mining scraper conveyors and belt conveyors according to claim 1 is characterized in that: A plurality of the dust concentration sensors (10) are arranged at intervals between the first guide rail exhaust port (8) and the scraper conveyor (5), and between the second guide rail exhaust port (14) and the belt conveyor (6), and a dust concentration sensor (10) is provided at the transfer point between the scraper conveyor (5) and the belt conveyor (6).

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