A liftable rotary arch breaking device for preventing coal gangue buffer bin from blocking and a method for operating the same

Abstract

The present application belongs to the technical field of coal mine safety transportation, and discloses a liftable rotary arch breaking device for preventing coal gangue buffer bin from blocking and lagging and an operating method, which comprises a buffer bin, a flat gate, a hydraulic jet pump station, an explosion-proof electric control device and a mechanical and hydraulic combined arch breaking assembly. The bottom of the buffer bin is provided with the flat gate, the lower portion of the flat gate is provided with a material guide groove, the bottom of the buffer bin is provided with a maintenance operation platform, the top of the maintenance operation platform is provided with the hydraulic jet pump station, and the lower portion of the flat gate is provided with the mechanical and hydraulic combined arch breaking assembly. The present application adopts a combined method of rotation, hydraulic machinery and high-pressure water to break arches, and has the advantages of strong arch breaking adaptability, large clearing range and good arch breaking effect, and effectively solves the problem of long-term arch rising of the coal gangue bin.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coal mine safety transportation, and particularly relates to a liftable rotary arch breaking device for preventing coal gangue buffer bin from being blocked and stagnant and an operation method. BACKGROUND

[0002] The coal gangue buffer bin is a main loading and storing link in the mine production system and plays an important role in ensuring the continuous and stable production of the mine. A conveyor (such as a scraper conveyor) is arranged below the coal gangue buffer bin. During the transfer, the gangue in the coal gangue buffer bin falls downward on the conveyor. The coal gangue produced in the mining process of the mine has high viscosity and high water content. When passing through the buffer bin, the gangue is often stagnant, which causes the arching of the gangue in the buffer bin, the blocking of the discharge opening of the coal gangue buffer bin and the failure of the normal transportation operation. Therefore, the gangue buffer bin needs to be handled frequently. This not only cannot fully play the role of the coal gangue buffer bin, but also seriously affects the normal production. The most common form of the blocking of the coal gangue buffer bin is the arching of the coal gangue buffer bin.

[0003] For the problem of the stagnant arching of the gangue in the transportation production, the blasting and the manual clearing are currently mainly used for the treatment. With the increasingly strict requirements for the safety production of the coal, the blasting operation is prohibited, and the manual arch breaking needs to be performed in the water-coal environment containing large gangue, which has great safety hazards for the personnel and equipment. The manual arch breaking has low efficiency. A large amount of time is consumed for the treatment of the arching and stagnant gangue each time, which causes the long-time continuous shutdown of the transportation system related thereto and seriously affects the normal production of the mine, which has a great impact on the economic benefits of the mine area. In particular, great safety hazards exist in the manual treatment. The sudden falling of the gangue flow in the manual treatment process may cause great harm to the personal safety of the operators.

[0004] Therefore, it is urgent to adopt an efficient and safe treatment process to solve the problem of the blocking and stagnant of the coal gangue buffer bin in the production. The present application can effectively treat the problem of the arching and stagnant of the coal gangue buffer bin. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application aims to provide a liftable rotary arch breaking device for preventing the coal gangue buffer bin from being blocked and stagnant and an operation method, which solves the problem of the gangue blocking in the prior art.

[0006] The purpose of the present application can be achieved by the following technical scheme: a liftable rotary arch breaking device for preventing the coal gangue buffer bin from being blocked and stagnant, comprising a buffer bin, a flat gate, a hydraulic machine jet pump station, an explosion-proof electric control device and a mechanical and hydraulic combined arch breaking assembly.

[0007] The bottom of the buffer bin is provided with a flat gate, and the lower side of the flat gate is provided with a material guide chute.

[0008] The mechanical and hydraulic combined arch breaking assembly comprises a cuboid drill bit arranged below the flat gate, a liftable rotary drill rod arranged at the bottom of the cuboid drill bit, front and rear rotary oblique cutting blades arranged on the outer wall of the liftable rotary drill rod, two-wing rotary oblique cutting blades arranged on the outer wall of the liftable rotary drill rod, and a rotary motor arranged at the bottom end of the liftable rotary drill rod.

[0009] In some embodiments, the lower side of the flat gate is provided with a lock opening chute, and the bottom of the lock opening chute is provided with a vibrating coal feeder.

[0010] In some embodiments, the bottom of the maintenance operation platform is provided with a belt conveyor assembly.

[0011] In some embodiments, the cuboid drill bit comprises a cuboid drill head and a drill bit cylinder, a plurality of cuboid drill heads are arranged at the top of the drill bit cylinder, and a hydraulic jack rod is arranged at the bottom of the drill bit cylinder.

[0012] In some embodiments, one end of the hydraulic jack rod is provided with an end cover, a high-pressure water pipe nozzle is arranged on the outer wall of the end cover, an arch breaking oil cylinder is arranged in the inner wall of the hydraulic jack rod, an arch breaking rotary sleeve is arranged on the outer wall of the arch breaking oil cylinder, an oil pipe is arranged in the inner wall of the arch breaking rotary sleeve, a hydraulic telescopic connecting rod is arranged at one end of the hydraulic jack rod, a circular connecting rod is arranged at one end of the hydraulic telescopic connecting rod, and a high-pressure water pipe is arranged in the inner wall of the arch breaking rotary sleeve.

[0013] In some embodiments, the belt conveyor assembly comprises a belt conveyor base arranged below the maintenance operation platform, a truing up roller is arranged at the top of the belt conveyor base, a driving drum is arranged at the top of the belt conveyor base, and a plurality of direction adjusting drums are arranged on both sides of the driving drum.

[0014] In some embodiments, dust removal assemblies are arranged on the outer walls of both sides of the belt conveyor assembly, the dust removal assemblies comprise fixed boxes arranged on both sides of the belt conveyor assembly, control boards are arranged on the outer walls of the fixed boxes, air outlet nozzles are arranged on the outer walls of the fixed boxes, and water inlet pipes are arranged on the outer walls of the fixed boxes.

[0015] In some embodiments, filter screens are arranged in the inner walls of the fixed boxes, water pumps are arranged in the inner walls of the fixed boxes, the input end of the water pump is in communication with one end of the water inlet pipe, a first ultrasonic atomizer and a second ultrasonic atomizer are arranged in the inner walls of the fixed boxes, and the first ultrasonic atomizer, the second ultrasonic atomizer, and the water pump are arranged below the filter screens.

[0016] In some of the disclosed, the inner wall of the fixed box is installed with a guide plate, the inner rear wall of the fixed box is installed with a fan, and the air outlet of the fan is communicated with the air injection outlet, the bottom of the filter screen is installed with a detector, the bottom of the detector is installed with a lifting rod, the bottom of the lifting rod is installed with a floating plate, the inner top wall of the detector is installed with a fixing frame, the inner wall of the fixing frame is installed with a movable shaft, the outer wall of the movable shaft is installed with a conductive rod, the outer wall of the conductive rod is installed with an insulating spring, a waterproof coal device is installed at the lock position of the gangue bin to prevent water and coal and facilitate equipment maintenance, a lower vibration belt type composite feeder is connected, an active anti-sticking wear-resistant vibration rear baffle is installed at the rear of the lower vibration belt type composite feeder to eliminate the adhesion and bonding of the gangue under the lock, eliminate the arching hidden danger of the part, and install a mechanical and hydraulic combined arch breaking assembly at the lock position. The mechanical and hydraulic combined arch breaking assembly is completely installed outside the bin, under the drive of hydraulic power and a rotary motor, the mechanical and hydraulic combined arch breaking assembly rotates into the gangue bin to perform mechanical rotation arch breaking, the rotary inclined cutting blade and the four-square drill bit are used to break the arching large blocks, the high-pressure water injection head enters the bin along with the mechanical and hydraulic combined arch breaking assembly to perform high-pressure water injection arch breaking operation on the materials in the bin. After the arch breaking is completed, the mechanical and hydraulic combined arch breaking assembly is retracted to the original position under the hydraulic drive, without affecting the normal coal feeding operation.

[0017] An operation method of a liftable rotary arch breaking device for preventing the coal gangue buffer bin from being blocked and stagnated, and operation steps of the arch breaking device are as follows.

[0018] S1, when the coal gangue in the coal gangue bin produces arching, a mechanical and hydraulic combined arch breaking assembly is started, then the mechanical and hydraulic combined arch breaking assembly enters the coal gangue bin by about 1500 mm under the drive of hydraulic propulsion and motor rotation force to perform mechanical rotation arch breaking on the arching part, and the mechanical arch breaking can mainly break the occlusion and bridging arching caused by large coal gangue;

[0019] S2, if the arching problem is eliminated, the mechanical and hydraulic combined arch breaking assembly is retracted to the original position to start re-feeding. If the mechanical arch breaking cannot effectively break the coal gangue arching in the bin, the high-pressure injection power device is started in the process of entering and retracting of the mechanical and hydraulic combined arch breaking assembly, high-pressure water is injected into the arching coal gangue in the coal gangue bin through the hydraulic pipeline installed in the arch breaking device and the special hydraulic nozzle at the end of the arch breaking device under the action of the high-pressure pump, the arching coal gangue layer is impacted and penetrated under the kinetic energy of the high-pressure water, the arching coal gangue layer is loosened and falls, and the arching of the fine gangue is eliminated.

[0020] S3, the mechanical and hydraulic combined arch breaking assembly can rotate and simultaneously perform hydraulic injection operation in the process of moving up and down, so that the arching positions in the bin can be effectively injected and cleaned to ensure good arch breaking effect.

[0021] The nouns, conjunctions or adjective parts involved in the above technical solutions are explained as follows:

[0022] Fixed connection refers to the connection of parts or components after being fixed without any relative movement;

[0023] Rotary connection refers to the connection between parts that allows the parts to rotate relative to each other;

[0024] Threaded connection is a kind of detachable fixed connection, which has the advantages of simple structure, reliable connection and convenient assembly and disassembly, and is widely used in mechanical engineering and connection structure field;

[0025] Sliding connection refers to the connection between parts that allows the parts to slide relative to each other.

[0026] The beneficial effects of the present application are:

[0027] 1. The present application adopts a method combining rotation, hydraulic machinery and high-pressure water to break arches, which has the advantages of strong arch breaking adaptability, large range of arch breaking, and good arch breaking effect, effectively solving the long-standing problem of arching in coal gangue storage.

[0028] 2. The present application installs a waterproof coal device at the lock position of the gangue storage to prevent water and coal and facilitate equipment maintenance.

[0029] 3. The lower part of the vibration belt conveyor assembly 11 is provided with a movable anti-sticking and wear-resistant vibration back plate, which eliminates the arching problem of the lower part of the lock.

[0030] 4. The present application installs a mechanical and hydraulic combined arch breaking assembly at the lock position of the gangue storage. The mechanical and hydraulic combined arch breaking assembly is completely installed outside the storage, and under the drive of hydraulic power and rotary motor, the mechanical and hydraulic combined arch breaking assembly enters the gangue storage to break arches and break large arches.

[0031] 5. When the rotary mechanical arch breaking cannot effectively break the arches in the storage, the high-pressure water jet head enters the storage with the mechanical and hydraulic combined arch breaking assembly, which can separate and loosen the arches adhered together, so that they can gradually disperse and fall, ensuring that the arches in the lock position of the buffer storage with a range of more than 6m are completely removed, thereby ensuring that the buffer storage does not appear to be blocked for a long time, and ensuring the normal and smooth delivery of the gangue storage.

[0032] 6. The present application can completely use rotary machinery and high-pressure water to break arches in daily arch breaking operation, without the need for manual arch breaking operation, and completely eliminates the safety hazards of personnel injury in the arch breaking operation process.

[0033] 7、The dust removal assembly can reduce dust in the gangue conveying process, the coal gangue falls and drives the surrounding air to flow downward, and at this time, the water mist is sprayed transversely from the air outlet, the water mist first wraps the coal gangue, thereby preliminarily eliminating the dust on the coal gangue, when the coal gangue falls on the track, at this time, due to the longitudinal flow of air, the water mist continues to flow downward, so that when the coal gangue falls on the track, the water mist covers the top of the coal gangue, further preventing dust diffusion. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without creative labor.

[0035] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0036] Figure 2 is a front view of the mechanical and hydraulic combined arch breaking assembly of the embodiment of the present application;

[0037] Figure 3 is an internal structure diagram of the mechanical and hydraulic combined arch breaking device of the embodiment of the present application;

[0038] Figure 4 is a top view of the mechanical and hydraulic combined arch breaking assembly of the embodiment of the present application;

[0039] Figure 5 is a structure diagram of the four-square bit of the embodiment of the present application;

[0040] Figure 6 is a structure diagram of the belt conveyor of the embodiment of the present application;

[0041] Figure 7 is a schematic diagram of the fixed box structure of the embodiment of the present application;

[0042] Figure 8 is a schematic diagram of the cross-sectional structure of the fixed box of the embodiment of the present application;

[0043] Figure 9 is a schematic diagram of the detector part structure of the embodiment of the present application.

[0044] In the figure: 1, buffer bin; 2, flat gate; 3, hydraulic jet pump station; 4, material guide chute; 5, explosion-proof electric control device; 6, mechanical and hydraulic combined arch breaking assembly; 7, lock opening chute; 8, vibrating coal feeder; 9, rotary motor; 10, maintenance operation platform; 11, belt conveyor assembly; 61, four-square drill bit; 62, two-wing rotary oblique cutting blade; 63, front and rear rotary oblique cutting blade; 64, liftable rotary drill rod; 611, four-square tool bit; 612, drill bit cylinder; 641, circular connecting rod; 642, oil pipe; 643, arch breaking oil cylinder; 644, arch breaking rotary sleeve; 645, end cover; 646, high-pressure water pipe nozzle; 647, hydraulic jacking rod; 648, hydraulic telescopic connecting rod; 649, high-pressure water pipe; 111, direction adjusting roller; 112, driving roller; 113, centering idler; 114, belt conveyor base; 12, dust removal assembly; 121, fixed box; 13, control panel; 14, air injection outlet; 15, water inlet pipe; 16, filter screen; 17, water pump; 18, first ultrasonic atomizer; 19, second ultrasonic atomizer; 20, flow guide plate; 21, fan; 22, detector; 23, lifting rod; 24, floating plate; 25, fixed frame; 26, movable shaft; 27, conductive rod; 28, insulating spring. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0046] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The utility model provides a kind of prevent coal gangue buffer bin from blocking and stagnate rotting of liftable rotary arch breaking device, including buffer bin 1, flat gate 2, hydraulic machine jet pump station 3, explosion-proof electric control 5 and mechanical hydraulic joint arch breaking assembly 6, the bottom of buffer bin 1 is equipped with flat gate 2, flat gate 2 below is provided with guide chute 4, the bottom of buffer bin 1 is equipped with maintenance operation platform 10, the top of maintenance operation platform 10 is equipped with hydraulic machine jet pump station 3, the lower side of flat gate 2 is provided with mechanical hydraulic joint arch breaking assembly 6, the mechanical hydraulic joint arch breaking assembly 6 includes the tetrahedron drill bit 61 being arranged below flat gate 2, the bottom of tetrahedron drill bit 61 is equipped with liftable rotary drill rod 64, front and rear rotating bevel blade 63 is installed on the outer wall of liftable rotary drill rod 64, two-wing rotating bevel blade 62 is installed on the outer wall of liftable rotary drill rod 64, the bottom end of liftable rotary drill rod 64 is equipped with rotary motor 9, the lower side of flat gate 2 is provided with lock mouth chute 7, the bottom of lock mouth chute 7 is provided with vibration coal feeder 8, the bottom of maintenance operation platform 10 is provided with belt conveyor assembly 11, the tetrahedron drill bit 61 includes tetrahedron tool bit 611 and drill bit cylinder 612, the top of drill bit cylinder 612 is equipped with a plurality of tetrahedron tool bit 611, the bottom of drill bit cylinder 612 is equipped with hydraulic jack 647, one end of hydraulic jack 647 is provided with end cap 645, high-pressure water pipe spray head 646 is installed on the outer wall of end cap 645, the inner wall of hydraulic jack 647 is provided with arch breaking cylinder 643, the outer wall of arch breaking cylinder 643 is equipped with arch breaking rotating sleeve 644, the inner wall of arch breaking rotating sleeve 644 is provided with oil pipe 642, one end of hydraulic jack 647 is equipped with hydraulic telescopic connecting rod 648, one end of hydraulic telescopic connecting rod 648 is equipped with circular connecting rod 641, the inner wall of arch breaking rotating sleeve 644 is provided with high-pressure water pipe 649, the belt conveyor assembly 11 includes the belt conveyor base 114 being arranged below maintenance operation platform 10, the top of belt conveyor base 114 is equipped with aligning roller 113, the top of belt conveyor base 114 is equipped with driving drum 112, a plurality of direction-changing roller 111 is equipped on the both sides of driving drum 112.

[0047] Specifically, the flat gate 2 is installed at the lower part of the lock opening of the buffer bin 1, the lock chute 7 is connected to the lower part of the flat gate 2, and the lock chute 7 is inserted into the groove of the vibrating coal feeder 8. At the lower rear side of the lock chute 7, a mechanical and hydraulic combined arch breaking assembly 6 is connected in the width direction, and a set of hydraulic and water jet arch breaking devices are closed and installed in the mechanical and hydraulic combined arch breaking assembly 6, and the lower circular connecting rod 641 is connected to the rotating motor 9. A material blocking plate is installed in front of the discharge end of the vibrating coal feeder 8, and a material guide chute 4 is installed at the lower part of the discharge end. The material guide chute 4 is connected to the belt conveyor assembly 11, and a material blocking plate is installed in front of the discharge end of the vibrating coal feeder 8. When the coal gangue in the coal gangue bin produces arching, the mechanical and hydraulic combined arch breaking assembly 6 is started, and then the mechanical and hydraulic combined arch breaking assembly 6 is driven by the hydraulic propulsion and motor rotation force to enter the coal gangue bin (about 1500mm), to mechanically rotate and break the arching part, and the mechanical breaking can mainly break the arching caused by the large block of coal gangue. If the arching problem is eliminated, the mechanical and hydraulic combined arch breaking assembly 6 is retracted to the original position to start feeding again. If the mechanical breaking cannot effectively break the arching of the coal gangue in the bin, the high-pressure jet power device is started during the entry and retraction of the mechanical and hydraulic combined arch breaking assembly 6, the high-pressure water is sprayed onto the arching coal gangue in the coal gangue bin through the hydraulic pipeline and the special hydraulic nozzle at the end of the arch breaking device under the action of the high-pressure pump, and the arching coal gangue layer is impacted and penetrated under the action of the kinetic energy of the high-pressure water, so that the arching coal gangue layer is loosened and falls, and the arching of the fine gangue is eliminated. In addition, the combined mechanical and hydraulic combined arch breaking assembly 6 can rotate and perform hydraulic jetting operation during the up and down movement of the mechanical and hydraulic combined arch breaking assembly 6, so that effective jetting and cleaning operations can be performed on each position of the arching in the bin, and good arch breaking effect can be ensured.

[0048] As shown in Figure 3 The liftable rotary arch breaking device is mainly composed of a square drill bit 61, two-wing rotary inclined blades 62, front and rear rotary inclined blades 63, a liftable rotary drill rod 64, a circular connecting rod 641, an oil pipe 642, an arch breaking oil cylinder 643, an arch breaking rotary sleeve 644, an end cover 645, a high-pressure water pipe nozzle 646, a hydraulic jack 647, a hydraulic telescopic connecting rod 648, and a high-pressure water pipe 649. The end of the hydraulic jack 647 is connected to the inner wall of the end cover 645 at the end of the arch breaking rotary sleeve 644, and the high-pressure water pipe nozzle 646 is installed on the end cover 645. The high-pressure water pipe 649 and the hydraulic oil pipe 642 are arranged in the gap between the outer walls of the oil cylinder and the arch breaking rotary sleeve 644, and are supported on the inner wall of the arch breaking rotary sleeve 644 in a hinged manner. The hydraulic oil pipe 642 is connected to the hydraulic pump station, one end of the high-pressure water pipe 649 is connected to the high-pressure water pipe nozzle 646, and the other end exposed to the outside of the arch breaking rotary sleeve 644 is connected to the high-pressure jet pump.

[0049] Please refer to Figure 7 , Figure 8 and Figure 9 The two sides of the belt conveyor assembly 11 are provided with dust removal assemblies 12, the dust removal assemblies 12 include fixed boxes 121 located on both sides of the belt conveyor assembly 11, control panels 13 are installed on the outer walls of the fixed boxes 121, air outlet nozzles 14 are installed on the outer walls of the fixed boxes 121, water inlet pipes 15 are installed on the outer walls of the fixed boxes 121, filter screens 16 are installed on the inner walls of the fixed boxes 121, water pumps 17 are installed on the inner walls of the fixed boxes 121, the input ends of the water pumps 17 are communicated with one end of the water inlet pipes 15, first ultrasonic atomizers 18 and second ultrasonic atomizers 19 are respectively installed on the inner walls of the fixed boxes 121, and the first ultrasonic atomizers 18, the second ultrasonic atomizers 19 and the water pumps 17 are all arranged below the filter screens 16, flow guide plates 20 are installed on the inner walls of the fixed boxes 121, fans 21 are installed on the inner rear walls of the fixed boxes 121, the air outlets of the fans 21 are communicated with the air outlet nozzles 14, detectors 22 are installed on the bottoms of the filter screens 16, lifting rods 23 are installed through the bottoms of the detectors 22, floating plates 24 are installed on the bottoms of the lifting rods 23, fixed frames 25 are installed on the inner top walls of the detectors 22, movable shafts 26 are installed on the inner walls of the fixed frames 25, conductive rods 27 are installed on the outer walls of the movable shafts 26, and insulating springs 28 are installed on the outer walls of the conductive rods 27.

[0050] Specifically, when the coal gangue falls on the track of the belt conveyor, dust is generated, thus causing a poor surrounding environment, at this time, the first ultrasonic atomizer 18 and the second ultrasonic atomizer 19 are started, the water in the fixed box 121 is atomized, at this time, the fan 21 is started, the fan 21 blows the water mist, so that the water mist is sprayed out of the air outlet nozzle 14, and the dust stirred up on the track is eliminated, thus realizing the dust removal function;

[0051] It should be noted that when the coal gangue falls, the surrounding air flows downward, and at this time, the water mist is sprayed transversely from the air outlet nozzle 14, the water mist first wraps the coal gangue, thus preliminarily eliminating the dust on the coal gangue, when the coal gangue falls on the track, at this time, due to the vertical flow of air, the water mist continues to flow downward, so that when the coal gangue falls on the track, the water mist covers the top of the coal gangue, further preventing the dust from spreading;

[0052] It should be noted that the water pump 17 works to pump water from the outside to the inside of the fixed box 121 through the water inlet pipe 15, thus realizing the water replenishing function, the filter screen 16 filters the impurities in the water, and the water is atomized and flows to the air outlet nozzle 14 through the flow guide plate 20, thus being sprayed out;

[0053] It should be noted that when the water level is lowered, the floating plate 24 is lowered with the liquid surface, at this time the top end of the lifting rod 23 is separated from the conductive rod 27, the conductive rod 27 is folded, so that the circuit of the water pump 17 is connected and starts to work, and the water pump 17 replenishes water. When the water level is high, the floating plate 24 drives the lifting rod 23 to rise, at this time the lifting rod 23 presses the conductive rod 27, the conductive rod 27 rotates to drive the insulating spring 28 to retract, at this time the conductive rod 27 is separated, the circuit is disconnected, so that the water pump 17 stops replenishing water. Through the above structure, the function of automatic water replenishment can be realized, so that the device can continuously output water mist during the working process.

[0054] The working principle is that when the arching of the coal gangue in the coal gangue bin occurs, the mechanical and hydraulic combined arch breaking assembly 6 is started, and then the mechanical and hydraulic combined arch breaking assembly 6 is driven by the hydraulic propulsion and the motor rotation force to enter the coal gangue bin (about 1500 mm), and the arching part is mechanically rotated to break the arching. If the arching problem is eliminated, the mechanical and hydraulic combined arch breaking assembly 6 is retracted to the original position to start to feed again. If the mechanical arch breaking cannot effectively break the arching of the coal gangue in the bin, the high-pressure jet power device is started in the process of entering and retracting of the mechanical and hydraulic combined arch breaking assembly 6. The high-pressure water is sprayed to the arching coal gangue in the coal gangue bin through the hydraulic pipeline installed in the arch breaking device and the special hydraulic nozzle at the end of the arch breaking device under the action of the high-pressure pump. The high-pressure water has a kinetic energy effect on the adhered and cemented coal gangue layer, so that the adhered and cemented coal gangue layer is loosened and falls, and the arching of the fine particle gangue is eliminated. In addition, the mechanical and hydraulic combined arch breaking assembly 6 can rotate and simultaneously perform the hydraulic jet operation in the process of moving up and down, so that the jet cleaning operation can be effectively performed on each position of the arching in the bin, and a good arch breaking effect is ensured. When the coal gangue falls on the track of the belt conveyor, dust is generated, so the first ultrasonic atomizer 18 and the second ultrasonic atomizer 19 are started. The ultrasonic atomizer atomizes the water in the fixed box 121. At this time, the fan 21 is started, and the fan 21 blows the water mist to make the water mist sprayed from the air outlet 14 to eliminate the dust generated on the track, so that the dust removal function is realized.

[0055] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A method for preventing the coal gangue buffer bin from being blocked and stalled by using a liftable rotary arch breaking device, characterized in that, It comprises a buffer bin (1), a flat gate (2), a hydraulic jet pump station (3), an explosion-proof electric control device (5) and a mechanical and hydraulic combined arch breaking assembly (6); The bottom of the buffer bin (1) is provided with the flat gate (2), the lower portion of the flat gate (2) is provided with a material guide chute (4), the bottom of the buffer bin (1) is provided with a maintenance operation platform (10), the top of the maintenance operation platform (10) is provided with the hydraulic jet pump station (3), and the lower portion of the flat gate (2) is provided with the mechanical and hydraulic combined arch breaking assembly (6); The mechanical and hydraulic combined arch breaking assembly (6) comprises a quadrangular drill bit (61) arranged below the flat gate (2), the bottom of the quadrangular drill bit (61) is provided with a liftable rotary drill rod (64), the outer wall of the liftable rotary drill rod (64) is provided with front and rear rotary oblique cutting blades (63), the outer wall of the liftable rotary drill rod (64) is provided with two-wing rotary oblique cutting blades (62), and the bottom end of the liftable rotary drill rod (64) is provided with a rotary motor (9); The quadrangular drill bit (61) comprises quadrangular drill bits (611) and a drill bit cylinder (612), the top of the drill bit cylinder (612) is provided with a plurality of quadrangular drill bits (611), and the bottom of the drill bit cylinder (612) is provided with a hydraulic ejector rod (647); One end of the hydraulic ejector rod (647) is provided with an end cover (645), the outer wall of the end cover (645) is provided with a high-pressure water pipe nozzle (646), the inner wall of the hydraulic ejector rod (647) is provided with an arch breaking oil cylinder (643), the outer wall of the arch breaking oil cylinder (643) is provided with an arch breaking rotary sleeve (644), the inner wall of the arch breaking rotary sleeve (644) is provided with an oil pipe (642), one end of the hydraulic ejector rod (647) is provided with a hydraulic telescopic connecting rod (648), one end of the hydraulic telescopic connecting rod (648) is provided with a circular connecting rod (641), and the inner wall of the arch breaking rotary sleeve (644) is provided with a high-pressure water pipe (649); The operation steps of the arch breaking device are as follows: S1, when the coal gangue in the coal gangue bin produces arching, the mechanical and hydraulic combined arch breaking assembly (6) is started, and the mechanical and hydraulic combined arch breaking assembly (6) is driven by the hydraulic propulsion and the motor rotation force to enter the coal gangue bin by about 1500mm, so as to mechanically rotate and break the arching part, and the mechanical breaking can mainly break the arching caused by the large block of coal gangue; S2, if the arching problem is eliminated, the mechanical and hydraulic combined arch breaking assembly (6) is retracted to the original position, and the feeding is started again; if the mechanical breaking cannot effectively break the coal gangue in the bin, the high-pressure jet power device is started in the process of entering and retracting the mechanical and hydraulic combined arch breaking assembly (6), the high-pressure water is sprayed into the arching coal gangue in the coal gangue bin through the hydraulic pipeline and the special hydraulic nozzle at the end of the arch breaking device under the action of the high-pressure pump, the arching coal gangue layer is impacted and penetrated under the kinetic energy of the high-pressure water, the arching coal gangue layer is loosened and falls, and the arching of the fine particle gangue is eliminated. S3, the combined mechanical and hydraulic arch breaking assembly (6) can rotate while moving up and down on the combined mechanical and hydraulic arch breaking assembly (6) to perform hydraulic jetting operations, thereby effectively performing jetting and cleaning operations on each position of the arch in the bin, ensuring good arch breaking effect.

2. The use of a liftable rotary arch-breaking device for preventing the blocking and stagnation of coal gangue buffer bin according to claim 1, characterized in that, A lock opening chute (7) is arranged below the flat gate (2), and a vibrating coal feeder (8) is arranged at the bottom of the lock opening chute (7).

3. The use of a liftable rotary arch-breaker device to prevent the blocking and stagnation of coal gangue buffer bins according to claim 1, characterized in that, The bottom of the maintenance operation platform (10) is provided with a belt conveyor assembly (11).

4. The use of a liftable rotary arch-breaker device to prevent the blocking and stagnation of a coal gangue buffer bin according to claim 3, characterized in that, The belt conveyor assembly (11) includes a belt conveyor base (114) arranged below the maintenance operation platform (10), a centering idler (113) mounted on the top of the belt conveyor base (114), a driving drum (112) mounted on the top of the belt conveyor base (114), and a plurality of direction adjusting drums (111) mounted on both sides of the driving drum (112).

5. The use of a liftable rotary arch-breaker device to prevent the blocking and stagnation of a coal gangue buffer bin according to claim 4, characterized in that, Dust removal assemblies (12) are arranged on both sides of the belt conveyor assembly (11), the dust removal assemblies (12) include fixed boxes (121) arranged on both sides of the belt conveyor assembly (11), control panels (13) mounted on the outer walls of the fixed boxes (121), air outlet openings (14) mounted on the outer walls of the fixed boxes (121), and water inlet pipes (15) mounted on the outer walls of the fixed boxes (121).

6. The use of a liftable rotary arch-breaker device to prevent the blocking and stagnation of a coal gangue buffer bin according to claim 5, characterized in that, The inner walls of the fixed boxes (121) are provided with filter screens (16), water pumps (17) mounted on the inner walls of the fixed boxes (121), the input ends of the water pumps (17) being communicated with one end of the water inlet pipes (15), first and second ultrasonic atomizers (18) and (19) respectively mounted on the inner walls of the fixed boxes (121), and the first and second ultrasonic atomizers (18) and (19) and the water pumps (17) being arranged below the filter screens (16).

7. The use of a liftable rotary arch-breaker device to prevent the blocking and stagnation of a coal gangue buffer bin according to claim 5, characterized in that, The inner walls of the fixed boxes (121) are provided with guide plates (20), and the inner rear walls of the fixed boxes (121) are provided with fans (21), the air outlets of the fans (21) being communicated with the air outlet openings (14), the bottoms of the filter screens (16) being provided with detectors (22), the bottoms of the detectors (22) being provided with lifting rods (23) penetratingly mounted thereon, the bottoms of the lifting rods (23) being provided with floating plates (24), the inner top walls of the detectors (22) being provided with fixed frames (25), the inner walls of the fixed frames (25) being provided with movable shafts (26), the outer walls of the movable shafts (26) being provided with conductive rods (27), and the outer walls of the conductive rods (27) being provided with insulating springs (28).

Images