Liftable rotary arch breaking device for preventing coal gangue surge bin from being blocked and stagnated and operation method

Abstract

The invention belongs to the technical field of coal mine safety transportation, and discloses a lifting type rotary arch breaking device for preventing a coal gangue surge bin from being blocked and stagnated and an operation method.The lifting type rotary arch breaking device comprises the surge bin, a bulkhead gate, a hydraulic machine jet pump station, an anti-explosion electric controller and a mechanical and hydraulic combined arch breaking assembly; a material guide groove is formed below the bulkhead gate, an overhaul operation platform is installed at the bottom of the surge bin, a hydraulic machine jet pump station is installed at the top of the overhaul operation platform, and a mechanical hydraulic combined arch breaking assembly is arranged below the bulkhead gate. The combined arch breaking is carried out by adopting a method of combining rotation, hydraulic machinery and high-pressure hydraulic power, the combined arch breaking device has the advantages of high adaptability to arch breaking types, large awning cleaning range and good arch breaking effect, and the long-term troubling problem of arch camber of the coal gangue bunker is effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of safe transportation of coal mines, and in particular relates to a liftable rotary arch-breaking device and an operation method thereof for preventing a coal gangue buffer bin from being blocked and stuck. Background Art

[0002] The gangue buffer bin is the main loading and storage 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 installed under the gangue bin. During transportation, the gangue in the gangue buffer bin falls down onto the conveyor. The gangue produced in the mining and production process of the mine has high viscosity and high water content. When passing through the buffer bin, the gangue often stagnates, causing the gangue to arch in the buffer bin, blocking the exit of the gangue bin, making it impossible to carry out normal transportation operations. Frequent processing is required, which not only fails to give full play to the role of the gangue buffer bin, but also seriously affects normal production. The most common form of blockage in the gangue buffer bin is the arching of the gangue buffer bin.

[0003] At present, blasting and manual clearing are mainly used to deal with the problem of stagnant gangue and arching in transportation production. As the requirements for coal production safety become more and more stringent, blasting operations are prohibited, and manual arch breaking needs to be carried out in a water-coal environment containing large pieces of coal gangue, which poses great risks to personal and equipment safety. Manual arch breaking and clearing are inefficient, and it takes a lot of time to deal with the arching and stagnant gangue problem each time, resulting in long-term continuous shutdown of the related transportation system, seriously affecting the normal production of the mine and causing a huge impact on the economic benefits of the mining area. In particular, there are huge safety hazards in the manual processing process. The sudden downflow of gangue in the manual processing process may cause great harm to the personal safety of the relevant operators.

[0004] Therefore, it is urgent to adopt an efficient and safe treatment process to solve the problem of gangue buffer bin blockage and stagnation in production. The present invention can effectively deal with the problem of gangue buffer bin blockage and stagnation. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a liftable rotary arch breaking device and an operating method for preventing gangue buffer bin from being blocked and stuck, thereby solving the problem of gangue blockage in the prior art.

[0006] The object of the present invention can be achieved by the following technical scheme: a liftable rotary arch breaking device for preventing gangue buffer bin from blocking the buffer bin, comprising a buffer bin, a flat gate, a hydraulic press jet pump station, an explosion-proof electric controller and a mechanical hydraulic combined arch breaking assembly;

[0007] A flat gate is installed at the bottom of the buffer bin, a material guide trough is arranged below the flat gate, a maintenance operation platform is installed at the bottom of the buffer bin, a hydraulic jet pump station is installed on the top of the maintenance operation platform, and a mechanical hydraulic combined arch breaking component is arranged below the flat gate;

[0008] The mechanical hydraulic combined arch breaking assembly includes a square drill bit arranged below the flat gate, a liftable rotary drill rod is installed at the bottom of the square drill bit, front and rear rotating bevel blades are installed on the outer wall of the liftable rotary drill rod, two-wing rotating bevel blades are installed on the outer wall of the liftable rotary drill rod, and a rotating motor is installed at the bottom end of the liftable rotary drill rod.

[0009] In some disclosures, a lock chute is provided below the flat gate, and a vibrating coal feeder is provided at the bottom of the lock chute.

[0010] In some disclosures, a belt conveyor assembly is disposed at the bottom of the maintenance operation platform.

[0011] In some disclosures, the square-shaped drill bit includes a square-shaped cutter head and a drill bit barrel, a plurality of square-shaped cutter heads are installed on the top of the drill bit barrel, and a hydraulic push rod is installed on the bottom of the drill bit barrel.

[0012] In some disclosures, an end cover is provided at one end of the hydraulic push rod, a high-pressure water pipe nozzle is installed on the outer wall of the end cover, an arch-breaking cylinder is provided on the inner wall of the hydraulic push rod, an arch-breaking rotating sleeve is installed on the outer wall of the arch-breaking cylinder, an oil pipe is provided on the inner wall of the arch-breaking rotating sleeve, a hydraulic telescopic connecting rod is installed at one end of the hydraulic push rod, a circular connecting rod is installed at one end of the hydraulic telescopic connecting rod, and a high-pressure water pipe is provided on the inner wall of the arch-breaking rotating sleeve.

[0013] In some disclosures, the belt conveyor assembly includes a belt conveyor base arranged below the maintenance operation platform, a self-aligning roller is installed on the top of the belt conveyor base, a driving roller is installed on the top of the belt conveyor base, and multiple direction-adjusting rollers are installed on both sides of the driving roller.

[0014] In some disclosures, dust removal assemblies are placed on the outer walls on both sides of the belt conveyor assembly, and the dust removal assemblies include fixed boxes located on both sides of the belt conveyor assembly, a control panel is installed on the outer wall of the fixed box, a jet outlet is installed on the outer wall of the fixed box, and a water inlet pipe is installed on the outer wall of the fixed box.

[0015] In some disclosures, a filter is installed on the inner wall of the fixed box, a water pump is installed on the inner wall of the fixed box, the input end of the water pump is connected to one end of the water inlet pipe, the first ultrasonic atomizer and the second ultrasonic atomizer are respectively installed on the inner wall of the fixed box, and the first ultrasonic atomizer, the second ultrasonic atomizer and the water pump are all arranged below the filter.

[0016] In some disclosures, a guide plate is installed on the inner wall of the fixed box, a fan is installed on the inner rear wall of the fixed box, and the air outlet of the fan is connected to the jet outlet, a detector is installed on the bottom of the filter, a lifting rod is installed through the bottom of the detector, a floating plate is installed on the bottom of the lifting rod, a fixed frame is installed on the inner top wall of the detector, a movable shaft is installed on the inner wall of the fixed frame, a conductive rod is installed on the outer wall of the movable shaft, and an insulating spring is installed on the outer wall of the conductive rod, a waterproof coal device is installed at the lock position of the gangue bin to prevent water coal and facilitate equipment maintenance, the lower part is connected to a vibrating belt compound feeder, and a movable anti-sticking and wear-resistant vibrating rear blocking plate is installed at the rear to eliminate the adhesion and compaction of gangue under the lock and the hidden danger of arching at this part, and a mechanical and hydraulic combined arch breaking assembly is installed at the lock position. The mechanical hydraulic combined arch breaking component is completely installed outside the bin. Driven by hydraulic power and a rotating motor, the mechanical hydraulic combined arch breaking component rotates into the gangue bin for mechanical rotary arch breaking. The rotating bevel blades and the square drill bit are used to break the large blocks of the arch and build bridges. The high-pressure water spray head enters the bin with the mechanical hydraulic combined arch breaking component to perform high-pressure water spraying and arch breaking operations on the materials in the bin. After the arch breaking is completed, the mechanical hydraulic combined arch breaking component retracts to its original position under hydraulic drive without affecting the normal coal feeding operation.

[0017] An operating method of a liftable rotary arch-breaking device for preventing a gangue buffer bin from being blocked and stuck in the bin, wherein the operating steps of the arch-breaking device are as follows;

[0018] S1. When the gangue in the gangue bin generates arching, the mechanical hydraulic combined arch breaking component is started. Then, the mechanical hydraulic combined arch breaking component enters the gangue bin about 1500mm under the drive of hydraulic propulsion and motor rotation force, and mechanically rotates the arch breaking part. The mechanical arch breaking can mainly break the occlusal bridging arching caused by large pieces of gangue;

[0019] S2. If the arching problem is eliminated, the mechanical hydraulic combined arch breaking component retracts to the original position and starts feeding again. If the mechanical arch breaking cannot effectively break the gangue canopy in the bin, the high-pressure jet power device is started during the entry and retraction of the mechanical hydraulic combined arch breaking component. Under the action of the high-pressure pump, the high-pressure water is sprayed onto the arched gangue material in the 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 kinetic energy of the high-pressure water, the coal gangue material layer that is adhered and compacted is impacted and penetrated, so that the coal gangue material layer that is adhered and compacted is loosened and falls, and the arching canopy of fine-grained gangue is eliminated;

[0020] S3. The combined mechanical and hydraulic arch breaking assembly can rotate, and hydraulic jetting operations are performed while the mechanical and hydraulic arch breaking assembly moves up and down. Therefore, effective jetting and clearing operations can be performed on various arched positions in the warehouse to ensure a good arch breaking effect.

[0021] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0022] A fixed connection is one where the parts or components are fixed without any relative movement;

[0023] A rotational connection is a connection between parts that allows the parts to rotate relative to each other;

[0024] Threaded connection is a detachable fixed connection with the advantages of simple structure, reliable connection, and convenient assembly and disassembly. It is widely used in the fields of mechanical engineering and connection structures.

[0025] A sliding connection is a connection between parts that allows the parts to slide against each other.

[0026] Beneficial effects of the present invention:

[0027] 1. The present invention adopts a combined method of rotation, hydraulic machinery and high-pressure hydraulic power to carry out joint arch breaking, which has the advantages of strong adaptability to arch breaking types, large clearing range and good arch breaking effect, and effectively solves the long-standing problem of arching in coal gangue silo silo.

[0028] 2. The present invention installs a water-proof coal device at the lock position of the gangue bin to prevent water coal and facilitate equipment maintenance.

[0029] 3. The lower part of the present invention is connected to a vibrating belt conveyor assembly 11, and a movable anti-sticking and wear-resistant vibrating rear blocking plate is installed at the rear part to eliminate the adhesion and compaction of gangue under the lock mouth and eliminate the hidden danger of arching at this part.

[0030] 4. A mechanical hydraulic combined arch breaking component is installed at the lock position of the gangue bin of the present invention. The mechanical hydraulic combined arch breaking component is completely installed outside the bin. Driven by hydraulic power and a rotating motor, the mechanical hydraulic combined arch breaking component enters the gangue bin to mechanically break the arch, and the broken arch blocks are bridged and arched.

[0031] 5. When the rotary mechanical arch breaking method of the present invention cannot effectively break up the gangue bunker in the bin, the high-pressure water spray head enters the bin along with the mechanical hydraulic combined arch breaking assembly, and uses a high-pressure water jet to spray the arched parts, thereby breaking up the gangue stuck together and causing them to gradually disperse and fall, thereby ensuring that the arches within a range of more than 6m from the lock position in the buffer bin are completely removed, thereby ensuring that the buffer bin will not be blocked for a long time, thereby ensuring the normal and smooth shipment of the gangue bin.

[0032] 6. The present invention can completely adopt the method of rotary machinery and high-pressure hydraulic power to break the arch in daily arch breaking operations, without the need for manual arch breaking operations, and completely eliminates the potential safety hazard of personnel being injured during the arch breaking operations.

[0033] 7. The present invention can reduce dust during the gangue transportation process by arranging a dust removal component. When the gangue falls, it will drive the surrounding air to flow downward, and at this time, water mist will be sprayed horizontally from the jet outlet. The water mist will first wrap the gangue, thereby preliminarily eliminating the dust on the gangue. When the gangue falls on the track, the longitudinal flow of the air will drive the water mist to continue to move downward, so that when the gangue falls on the track, the water mist will cover the top of the gangue, further preventing the dust from spreading. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

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

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

[0037] Figure 3 : is an internal structure diagram of a mechanical and hydraulic combined arch breaking device according to an embodiment of the present invention;

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

[0039] Figure 5 is a structural diagram of a square-shaped drill bit according to an embodiment of the present invention;

[0040] Figure 6 is a structural diagram of a belt conveyor according to an embodiment of the present invention;

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

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

[0043] Fig. 9 It is a schematic diagram of the structure of the detector part of an embodiment of the present invention.

[0044] In the figure: 1. Buffer bin; 2. Flat gate; 3. Hydraulic press jet pump station; 4. Guide chute; 5. Explosion-proof electric controller; 6. Mechanical and hydraulic combined arch breaking assembly; 7. Locking chute; 8. Vibrating coal feeder; 9. Rotating motor; 10. Maintenance operation platform; 11. Belt conveyor assembly; 61. Square drill bit; 62. Two-wing rotating bevel blades; 63. Front and rear rotating bevel blades; 64. Liftable rotary drill rod; 611. Square cutter head; 612. Drill bit barrel; 641. Round connecting rod; 642. Oil pipe; 643. Arch breaking cylinder; 644. Arch breaking rotating sleeve; 645. End cover; 646. High pressure Water pipe nozzle; 647, hydraulic jack; 648, hydraulic retractable connecting rod; 649, high-pressure water pipe; 111, adjustment roller; 112, driving roller; 113, self-aligning roller; 114, belt conveyor base; 12, dust removal component; 121, fixed box; 13, control panel; 14, jet outlet; 15, water inlet pipe; 16, filter screen; 17, water pump; 18, first ultrasonic atomizer; 19, second ultrasonic atomizer; 20, 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 following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6A liftable rotary arch-breaking device for preventing gangue buffer bin from clogging and stagnation, comprising a buffer bin 1, a flat gate 2, a hydraulic jet pump station 3, an explosion-proof electric controller 5 and a mechanical hydraulic combined arch-breaking component 6, wherein the flat gate 2 is installed at the bottom of the buffer bin 1, a material guide trough 4 is arranged below the flat gate 2, a maintenance operation platform 10 is installed at the bottom of the buffer bin 1, a hydraulic jet pump station 3 is installed on the top of the maintenance operation platform 10, a mechanical hydraulic combined arch-breaking component 6 is arranged below the flat gate 2, and the mechanical hydraulic combined arch-breaking component 6 is arranged below the flat gate 2. The component 6 includes a square drill bit 61 arranged below the flat gate 2, a liftable rotary drill rod 64 is installed at the bottom of the square drill bit 61, a front and rear rotary bevel blade 63 is installed on the outer wall of the liftable rotary drill rod 64, a two-wing rotary bevel blade 62 is installed on the outer wall of the liftable rotary drill rod 64, a rotary motor 9 is installed at the bottom of the liftable rotary drill rod 64, a lock chute 7 is arranged below the flat gate 2, a vibrating coal feeder 8 is arranged at the bottom of the lock chute 7, and a belt conveyor assembly is arranged at the bottom of the maintenance operation platform 10 11. The square drill bit 61 includes a square cutter head 611 and a drill bit barrel 612. A plurality of square cutter heads 611 are installed on the top of the drill bit barrel 612. A hydraulic push rod 647 is installed on the bottom of the drill bit barrel 612. An end cover 645 is provided at one end of the hydraulic push rod 647. A high-pressure water pipe nozzle 646 is installed on the outer wall of the end cover 645. An arch-breaking oil cylinder 643 is provided on the inner wall of the hydraulic push rod 647. An arch-breaking rotating sleeve 644 is installed on the outer wall of the arch-breaking oil cylinder 643. An oil pipe 642 is provided on the inner wall of the arch-breaking rotating sleeve 644. A hydraulic telescopic connecting rod 648 is installed at one end of the hydraulic push rod 647, a circular connecting rod 641 is installed at one end of the hydraulic telescopic connecting rod 648, and a high-pressure water pipe 649 is installed on the inner wall of the arch-breaking rotating sleeve 644. The belt conveyor assembly 11 includes a belt conveyor base 114 arranged under the maintenance operation platform 10, a self-aligning roller 113 is installed on the top of the belt conveyor base 114, and a driving roller 112 is installed on the top of the belt conveyor base 114, and a plurality of direction adjustment rollers 111 are installed on both sides of the driving roller 112.

[0047] Specifically, a flat gate 2 is installed at the lower part of the lock of the buffer bin 1, and the lower part of the flat gate 2 is connected to the lock chute 7, which is inserted into the tank body of the vibrating coal feeder 8. Below the rear side of the lock chute 7, a mechanical hydraulic combined arch breaking assembly 6 is connected in the width direction, and the ends of a set of hydraulic and water jet arch breaking devices are closed and installed in the mechanical hydraulic combined arch breaking assembly 6, and the lower circular connecting rod 641 is connected to the rotating motor 9. A baffle plate is installed in front of the discharge end of the vibrating coal feeder 8, and a guide trough 4 is installed at the lower part of the discharge end. The guide trough 4 is connected to the belt conveyor assembly 11, and a baffle plate is installed in front of the discharge end of the vibrating coal feeder 8. When the gangue in the gangue bin is arched, the mechanical hydraulic combined arch breaking component 6 is started, and the mechanical hydraulic combined arch breaking component 6 enters the gangue bin (about 1500mm distance) driven by hydraulic propulsion and motor rotation force, and mechanically rotates and breaks the arched part. The mechanical arch breaking can mainly break the occlusal bridge arching caused by large pieces of gangue. If the arching problem is eliminated, the mechanical hydraulic combined arch breaking component 6 retracts to the original position and starts to feed again. If the mechanical arch breaking cannot effectively break the gangue bunker in the bunker, the high-pressure jet power device is started during the process of the mechanical hydraulic combined arch breaking component 6 entering and retracting. The high-pressure water is sprayed onto the gangue material in the bunker 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. Under the kinetic energy of the high-pressure water, the gangue material layer that is adhered and compacted is impacted and penetrated, so that the gangue material layer that is adhered and compacted is loosened and falls, and the arch bunker of fine-grained gangue is eliminated. In addition, the combined mechanical hydraulic combined arch breaking component 6 can rotate, and the hydraulic jetting operation is performed during the process of the mechanical hydraulic combined arch breaking component 6 moving up and down. Therefore, the various positions of the arch in the bunker can be effectively sprayed and cleared, ensuring a good arch breaking effect.

[0048] like Figure 3 As shown, the liftable rotary arch breaking device is mainly composed of a square drill bit 61; two-wing rotary bevel blades 62; front and rear rotary bevel blades 63; liftable rotary drill rod 64; round connecting rod 641; oil pipe 642; arch breaking oil cylinder 643; arch breaking rotating sleeve 644; end cover 645; high-pressure water pipe nozzle 646; hydraulic push rod 647; hydraulic telescopic connecting rod 648 and high-pressure water pipe 649. The end of the hydraulic push rod 647 is connected to the inner wall of the end cover 645 at the end of the arch breaking rotating 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 wall of the oil cylinder and the arch breaking rotating sleeve 644, and are supported on the inner wall of the arch breaking rotating sleeve 644 by a hinge structure. 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 rotating sleeve 644 is connected to the high-pressure jet pump.

[0049] See also Figure 7 , Figure 8 and Fig. 9 The outer walls of both sides of the belt conveyor assembly 11 are provided with dust removal assemblies 12, and the dust removal assemblies 12 include fixed boxes 121 located on both sides of the belt conveyor assembly 11, the outer walls of the fixed boxes 121 are provided with a control panel 13, the outer walls of the fixed boxes 121 are provided with a jet outlet 14, the outer walls of the fixed boxes 121 are provided with a water inlet pipe 15, the inner walls of the fixed boxes 121 are provided with a filter screen 16, the inner walls of the fixed boxes 121 are provided with a water pump 17, the input end of the water pump 17 is connected to one end of the water inlet pipe 15, the inner walls of the fixed boxes 121 are provided with a first ultrasonic atomizer 18 and a second ultrasonic atomizer 19, and the first ultrasonic atomizer 16 is ... filter screen 16, the inner walls of the fixed boxes 121 are provided with a filter screen 16, the inner walls of the fixed boxes 121 are provided with a filter screen 16, the inner The device 18, the second ultrasonic atomizer 19 and the water pump 17 are all arranged below the filter 16, the inner wall of the fixed box 121 is installed with a guide plate 20, the inner rear wall of the fixed box 121 is installed with a fan 21, and the air outlet of the fan 21 is connected with the jet outlet 14, a detector 22 is installed at the bottom of the filter 16, a lifting rod 23 is installed through the bottom of the detector 22, a floating plate 24 is installed at the bottom of the lifting rod 23, a fixing frame 25 is installed on the inner top wall of the detector 22, a movable shaft 26 is installed on the inner wall of the fixing frame 25, a conductive rod 27 is installed on the outer wall of the movable shaft 26, and an insulating spring 28 is installed on the outer wall of the conductive rod 27.

[0050] Specifically, when the gangue falls onto the crawler belt of the belt conveyor, the gangue will generate dust, which will lead to a poor surrounding environment. At this time, the first ultrasonic atomizer 18 and the second ultrasonic atomizer 19 are started, and 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 so that the water mist is ejected from the jet outlet 14 to eliminate the dust stirred up on the crawler belt, thereby realizing the dust removal function;

[0051] It should be noted that when the gangue falls, it will drive the surrounding air to flow downward, and at this time, the water mist will be ejected horizontally from the jet outlet 14, and the water mist will first wrap the gangue, thereby preliminarily eliminating the dust on the gangue. When the gangue falls on the crawler, the longitudinal flow of the air will drive the water mist to continue to flow downward, so that when the gangue falls on the crawler, the water mist will cover the top of the 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 to achieve the water replenishment function, the filter 16 filters the debris in the water, and the water is atomized and flows to the jet outlet 14 through the guide plate 20, thereby being sprayed out;

[0053] It should be noted that when the water level drops, the float 24 drops with the liquid level. At this time, the top of the lifting rod 23 separates from the conductive rod 27, and the conductive rod 27 closes, 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 float 24 drives the lifting rod 23 to rise. At this time, the lifting rod 23 squeezes the conductive rod 27, and the conductive rod 27 rotates to drive the insulating spring 28 to contract. At this time, the conductive rod 27 separates and the circuit is disconnected, so that the water pump 17 stops replenishing water. The above structure can realize the function of automatic water replenishment, so that the equipment can continuously output water mist during operation.

[0054] Working principle: when the gangue in the gangue bin generates arching, the mechanical hydraulic combined arch breaking component 6 is started, and the mechanical hydraulic combined arch breaking component 6 enters the gangue bin (about 1500mm distance) driven by hydraulic propulsion and motor rotation force, and mechanically rotates and breaks the arching part. The mechanical arch breaking can mainly break the occlusal bridge arching caused by large pieces of gangue. If the arching problem is eliminated, the mechanical hydraulic combined arch breaking component 6 retracts to the original position and starts to feed again. If mechanical arch breaking cannot effectively break up the gangue roof in the bin, the high-pressure jet power device is started during the entry and retraction of the mechanical hydraulic combined arch breaking component 6. Under the action of the high-pressure pump, the high-pressure water is sprayed onto the arched gangue material in the 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 kinetic energy of the high-pressure water, the coal gangue material layer that is adhered and compacted is impacted and penetrated, so that the coal gangue material layer that is adhered and compacted is loosened and falls, thereby eliminating the arched roof of the fine-grained gangue. In addition, the combined mechanical hydraulic combined arch breaking component 6 can rotate, and hydraulic jetting operations are performed while the mechanical hydraulic combined arch breaking component 6 moves up and down. Therefore, effective jetting and clearing operations can be performed on various arched positions in the bin to ensure a good arch breaking effect. When coal gangue falls onto the crawler belt of the belt conveyor, the coal gangue will produce dust, resulting in a poor surrounding environment. At this time, the first ultrasonic atomizer 18 and the second ultrasonic atomizer 19 are started, and 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 so that the water mist is sprayed out from the jet outlet 14 to eliminate the dust stirred up on the crawler belt, thereby realizing the dust removal function.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation 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 invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A liftable rotary arch-breaking device for preventing gangue buffer bin from clogging and stagnation, characterized in that: It comprises a buffer bin (1), a flat gate (2), a hydraulic jet pump station (3), an explosion-proof electric controller (5) and a mechanical and hydraulic combined arch breaking component (6); A flat gate (2) is installed at the bottom of the buffer bin (1), a material guide trough (4) is arranged below the flat gate (2), a maintenance operation platform (10) is installed at the bottom of the buffer bin (1), a hydraulic jet pump station (3) is installed on the top of the maintenance operation platform (10), and a mechanical hydraulic combined arch breaking component (6) is arranged below the flat gate (2); The mechanical hydraulic combined arch breaking assembly (6) comprises a square drill bit (61) arranged below the flat gate (2); a liftable rotary drill rod (64) is installed at the bottom of the square drill bit (61); front and rear rotary bevel blades (63) are installed on the outer wall of the liftable rotary drill rod (64); two-wing rotary bevel blades (62) are installed on the outer wall of the liftable rotary drill rod (64); and a rotary motor (9) is installed at the bottom end of the liftable rotary drill rod (64).

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

3. The liftable rotary arch-breaking device for preventing gangue buffer bin from clogging and stagnation according to claim 1 is characterized in that: A belt conveyor assembly (11) is provided at the bottom of the maintenance operation platform (10).

4. The liftable rotary arch-breaking device for preventing gangue buffer bin from clogging and stagnation according to claim 1 is characterized in that: The square drill bit (61) comprises a square cutter head (611) and a drill bit barrel (612); a plurality of square cutter heads (611) are mounted on the top of the drill bit barrel (612); and a hydraulic push rod (647) is mounted on the bottom of the drill bit barrel (612).

5. The liftable rotary arch-breaking device for preventing gangue buffer bin from clogging and stagnation according to claim 4 is characterized in that: An end cover (645) is provided at one end of the hydraulic push rod (647), a high-pressure water pipe nozzle (646) is installed on the outer wall of the end cover (645), an arch-breaking oil cylinder (643) is provided on the inner wall of the hydraulic push rod (647), an arch-breaking rotating sleeve (644) is installed on the outer wall of the arch-breaking oil cylinder (643), an oil pipe (642) is provided on the inner wall of the arch-breaking rotating sleeve (644), a hydraulic telescopic connecting rod (648) is installed at one end of the hydraulic push rod (647), a circular connecting rod (641) is installed at one end of the hydraulic telescopic connecting rod (648), and a high-pressure water pipe (649) is provided on the inner wall of the arch-breaking rotating sleeve (644).

6. The liftable rotary arch-breaking device for preventing gangue buffer bin from clogging and stagnation according to claim 3 is characterized in that: The belt conveyor assembly (11) comprises a belt conveyor base (114) arranged below the maintenance operation platform (10), a self-aligning roller (113) is installed on the top of the belt conveyor base (114), a driving roller (112) is installed on the top of the belt conveyor base (114), and a plurality of direction adjustment rollers (111) are installed on both sides of the driving roller (112).

7. The liftable rotary arch-breaking device for preventing gangue buffer bin from clogging and stagnation according to claim 6 is characterized in that: Dust removal assemblies (12) are placed on both sides of the outer walls of the belt conveyor assembly (11), and the dust removal assembly (12) comprises fixed boxes (121) located on both sides of the belt conveyor assembly (11), a control panel (13) is installed on the outer wall of the fixed box (121), an air jet outlet (14) is installed on the outer wall of the fixed box (121), and a water inlet pipe (15) is installed on the outer wall of the fixed box (121).

8. The liftable rotary arch-breaking device for preventing gangue buffer bin from being blocked and stuck according to claim 7 is characterized in that: A filter screen (16) is installed on the inner wall of the fixed box (121), a water pump (17) is installed on the inner wall of the fixed box (121), an input end of the water pump (17) is connected to one end of the water inlet pipe (15), and a first ultrasonic atomizer (18) and a second ultrasonic atomizer (19) are installed on the inner wall of the fixed box (121), respectively, and the first ultrasonic atomizer (18), the second ultrasonic atomizer (19) and the water pump (17) are all arranged below the filter screen (16).

9. The liftable rotary arch-breaking device for preventing gangue buffer bin from clogging and stagnation according to claim 7 is characterized in that: The inner wall of the fixed box (121) is provided with a guide plate (20), the inner rear wall of the fixed box (121) is provided with a fan (21), and the air outlet of the fan (21) is connected with the jet outlet (14), the bottom of the filter (16) is provided with a detector (22), the bottom of the detector (22) is provided with a lifting rod (23), the bottom of the lifting rod (23) is provided with a floating plate (24), the inner top wall of the detector (22) is provided with a fixed frame (25), the inner wall of the fixed frame (25) is provided with a movable shaft (26), the outer wall of the movable shaft (26) is provided with a conductive rod (27), and the outer wall of the conductive rod (27) is provided with an insulating spring (28).

10. An operating method of a liftable rotary arch-breaking device for preventing gangue buffer bin from clogging and stagnation is applicable to a liftable rotary arch-breaking device for preventing gangue buffer bin from clogging and stagnation as claimed in any one of claims 1 to 9, characterized in that: The operation steps of the arch breaking device are as follows: S1. When the gangue in the gangue bin generates arching, the mechanical hydraulic combined arch breaking component (6) is started. Then, the mechanical hydraulic combined arch breaking component (6) enters the gangue bin about 1500 mm under the drive of hydraulic propulsion and motor rotation force, and mechanically rotates and breaks the arch at the arched part. The mechanical arch breaking can mainly break the occlusal bridging arch generated by large pieces of gangue; S2. If the arching problem is eliminated, the mechanical hydraulic combined arch breaking component (6) retracts to the original position and starts to feed again. If the mechanical arch breaking cannot effectively break the coal gangue canopy in the bin, the high-pressure jet power device is started during the process of the mechanical hydraulic combined arch breaking component (6) entering and retracting. Under the action of the high-pressure pump, the high-pressure water is sprayed onto the arched 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 kinetic energy of the high-pressure water, the coal gangue layer that is adhered and compacted is impacted and penetrated, so that the coal gangue layer that is adhered and compacted is loosened and falls, thereby eliminating the arching canopy of fine-grained gangue. S3. The combined mechanical and hydraulic arch breaking component (6) can rotate, and hydraulic jetting is performed while the mechanical and hydraulic arch breaking component (6) moves up and down. Therefore, effective jetting and clearing operations can be performed on various locations of arches in the warehouse, ensuring a good arch breaking effect.

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