96 results about "Briquetage" patented technology

A coal mill feeding device comprises: a screening assembly comprising a box, a feeding port formed at the top of the box, a discharge port formed at the bottom of the box, a screen plate and a receiving plate both arranged inside the box, and a plurality of screen holes provided in the screen plate; a drive assembly; and a feeding assembly. To ensure the uniformity of pulverized coal, the screening assembly is provided to perform coarse and fine screening on mixed coal briquettes, which enables batch feeding of the coal briquettes into the coal mill for grinding, thereby facilitating subsequent control of the grinding roller pressure and grinding duration based on the specific conditions of the coal briquettes. When an electric motor is activated, the screen plate performs screening while a barrier plate is lifted to effectively prevent the coal briquettes from splashing. After the screening is completed, a first air cylinder can be activated to drive a first push shovel to push the coarse coal for grinding, and at this point, the barrier plate is lowered to facilitate a material guide plate conveying the coal briquettes. After the grinding of the coarse coal is completed, a second air cylinder is activated to drive a second push shovel to push the fine coal for grinding.

The utility model belongs to the technical field of furnace slag treatment, particularly relates to an AI identification automatic dust removal robot for a furnace slag treatment smart factory, and aims to solve the problems that furnace slag in a furnace is difficult to completely move out in the process of moving the furnace slag out of the furnace at present, and the furnace slag in the furnace is accumulated during long-time use, so that the furnace slag in the furnace cannot be completely removed. In order to solve the problems that in the prior art, ventilation in a stove is not smooth enough, and normal combustion of coal briquettes is affected, according to the scheme, the stove comprises an electric crawler-type base, a mounting box is welded to the top of the electric crawler-type base, a door plate is hinged to an opening in one side of the mounting box, and a vacuum pump is fixedly mounted on one side of the top of the electric crawler-type base through bolts; according to the furnace slag collecting device, the suction pipe can be transferred into the furnace, furnace slag stored in the furnace can be sucked out and collected into the net cage in a centralized mode, and therefore the furnace slag contained in the furnace can be conveniently and rapidly collected in the centralized mode in the actual use process, and the furnace can work stably and continuously.

The utility model relates to the technical field of crushing mechanisms of coal mining machines, in particular to a crushing mechanism of an impact shovel coal mining machine, which comprises a support arm, the support arm comprises a support part, one end of the support part is rotatably connected with a crushing roller, one end of the support part is rotatably provided with a protective plate, the top of the crushing roller is provided with a crushing cover, and the protective plate is arranged on the top of the crushing cover. The crushing cover is fixedly connected with the supporting part, and an intercepting mechanism is arranged at one end of the crushing cover. According to the utility model, the plurality of sleeves I are arranged on the rear side of the crushing roller, the sleeves II are arranged in the sleeves I in a sliding manner, the insertion rods are arranged in the sleeves II in a sliding manner, and the insertion rods, the sleeves I and the sleeves II form an interception rod which is arranged behind the crushing roller, so that when large-size coal briquettes are conveyed to the position of the interception rod along with the conveyor, the large-size coal briquettes can be intercepted; and the intercepting rod prevents large-size coal briquettes from passing through the intercepting rod, so that the large-size coal briquettes can be fully crushed, and the phenomenon that the conveyor conveys the coal briquettes which are not fully crushed to the bottom of the coal mining machine to cause blockage is prevented.

The utility model relates to the technical field of coal mines, and discloses a novel multi-stage split type cylinder ore washer which comprises a cleaning cylinder shell arranged in an inclined mode, a screening cylinder shell is fixedly installed at the right end of the cleaning cylinder shell, a cleaning roller is rotationally connected into the cleaning cylinder shell, a plurality of spraying assemblies are fixedly installed at the bottom of a water distribution assembly, and a plurality of spraying assemblies are fixedly installed at the bottom of the cleaning cylinder shell. A plurality of annular spraying channels are reserved in the cleaning roller, and a screening assembly is fixedly installed at the right end of the cleaning roller. A water pump is added into a water storage tank through a water inlet pipe, then distributed into an annular pipe through a water distribution pipe and sprayed to the surfaces of coal briquettes through a spray head to clean the coal briquettes, so that sludge penetrates through filtering holes to be discharged into a cleaning barrel shell, and fine broken stones enter an annular spraying channel and then penetrate through a slag discharging groove to be discharged into the cleaning barrel shell; finally, the sludge and the sludge are discharged from the sludge discharge hopper; therefore, the sprayed water directly acts on the surface of the coal briquette, the impact force of the water flow on the surface of the coal briquette is guaranteed, and the cleaning effect is guaranteed.

The invention discloses a coal gangue sorting device without adhesive tape transportation, and relates to the technical field of coal gangue sorting. The device comprises a sorting box used for sorting coal briquettes and gangue, and further comprises an impurity removal unit arranged in the sorting box and comprising a conveying assembly and a discharging assembly, and spiral conveying blades used for conveying the coal briquettes and the gangue are arranged in the conveying assembly; and the sorting unit is arranged in the sorting box and comprises a vibration assembly, a collection assembly and an adsorption assembly. The device has the advantages that lossless conveying of coal briquettes and gangue can be achieved by adopting a rotary conveying mode of the spiral conveying blades, disintegrating slag and dust in the coal briquettes and the gangue can be effectively removed in cooperation with screening and adsorption effects during conveying, and meanwhile efficient separation of the coal briquettes and the gangue can be achieved by utilizing mass difference and adopting a vibration separation mode; and secondary separation is conducted in an airflow blowing mode, part of gangue remaining in the coal briquettes obtained after primary separation is effectively removed, and the separation effect is better.

The utility model discloses an automatic control hydraulic material pushing device which comprises a machine head frame, a first motor is fixedly connected to the inner side of the machine head frame, a frame is fixedly connected to the inner side of the machine head frame, a second motor is fixedly connected to the inner side wall of the frame, and an output shaft of the second motor is fixedly connected with a driving gear. A bearing is fixedly connected to the top end of the frame, a threaded rod is fixedly connected to the interior of the bearing, a driven gear is fixedly connected to the outer surface of the threaded rod, a threaded block is in threaded connection to the outer surface of the threaded rod, and a scraping plate is fixedly connected to the top end of the threaded block. The water accumulation pool is arranged, the pipeline is installed at the top end of the adhesive tape, the adhesive tape is washed through the spray head, coal briquettes are prevented from being accumulated on the surface of the adhesive tape, the driving gear and the driven gear are arranged, the threaded rod is driven to rotate, the threaded block is driven to move, the scraper is driven to move up and down, the scraper makes contact with the adhesive tape, accumulated coal on the surface of the adhesive tape is scraped off, and the coal falls off along the slope.

The invention relates to the technical field of coal mine safety, and discloses a follow-up safety device integrated on a hydraulic support, which comprises a hydraulic support and a front plate rotationally connected to the hydraulic support, and further comprises a coordination mechanism, and the coordination mechanism comprises a first carrier plate fixedly connected to the surface of the front plate; a pair of fixedly connected incomplete racks and a flow guide mechanism are oppositely arranged on the surface of the first carrying plate, the flow guide mechanism comprises a second carrying plate fixedly connected into the hydraulic support, and two water passing pipes with opposite inclination directions are arranged, so that when the coal mining machine does not reach a specific area, one group of water passing pipes are started and incline towards the gravity center direction of a coal wall, and the other group of water passing pipes incline towards the gravity center direction of the coal wall; a high-concentration halogen salt stopping agent is intensively jetted, a high-concentration gas leakage crack area which is expected to be generated when a coal wall is cut is treated, advanced treatment and source inhibition are achieved, and when a coal mining machine cuts and passes through the area, the coal briquettes falling onto a conveying belt are inhibited and attached in cooperation with the withdrawing action of a front plate of a hydraulic support and the angle adjustment of a current water passing pipe.

The impurity removal device comprises an impurity removal device body arranged between two raw coal belt conveyors, the impurity removal device body comprises an impurity removal box with an opening in the upper portion of the right side, and the bottom of the impurity removal box is fixedly connected with four supporting legs in a rectangular shape. And a feeding hole is formed in the inner wall of the left side of the impurity removal box. By arranging a series of structures, sundries in coal briquettes can be conveniently hooked and separated during conveying of the coal briquettes, the hooked sundries can be conveniently obliquely and outwards vibrated, guided, discharged and collected, crushed slag and silt can be integrally and automatically subjected to hard vibration filtering and screening, the impurity removal effect is improved, the sundries do not need to be taken out of the machine by personnel, and the labor intensity is reduced. And in addition, the modes of hooking and cleaning, vibration guiding and discharging and hard vibration filtering and screening are integrally achieved through a single drive, multifunctional independent driving equipment is not needed, and the energy-saving effect is high.

The utility model discloses a coal quality detection device and relates to the technical field of coal quality detection. Comprising a fixing base, a supporting base is arranged on the first plane of the fixing base, one side of the supporting base is open, and the first plane is the contact face of the fixing base and the supporting base; the testing mechanism is arranged in the fixing seat and used for carrying out sinking and floating detection on the coal briquettes, the testing mechanism comprises a cleaning part, a filtering part and a control part, the cleaning part is arranged on the outer side of the supporting seat and used for storing the heavy liquid, the filtering part is arranged in the cleaning part and used for containing the coal briquettes, and the control part is arranged in the fixing seat. Through the arrangement of the cleaning piece and the control piece, the heavy liquid storage barrel, the supporting pipe, the through hole, the rotating disc, the connecting rod, the connecting disc and the transmission shaft are matched to drive the fixed barrel and coal in the fixed barrel to swing, and the situation that a tester manually swings the net bottom barrel back and forth to rotate is avoided; therefore, the labor intensity of testers in the testing process is reduced.

The present application relates to the technical field of coal briquette crushing, and discloses a screening device for coal briquette conveying, which comprises a box body provided with an inlet and an outlet, and a screening mechanism arranged in the box body; the screening mechanism comprises a first screening plate, a collecting box with an open top, and a plurality of crushing assemblies arranged along the length direction of the first screening plate; the first screening plate is arranged obliquely and fixed to the box body; the collecting box is fixed to the box body and located at one end of the first screening plate close to the bottom of the box body; each crushing assembly comprises a moving block, a linkage block, a plurality of conical blocks, and a driving part for driving the moving block to make vertical reciprocating motion; the moving block is slidably connected to the box body; the linkage block is fixed to the moving block; each conical block is fixed to the linkage block, and the first screening plate is located on the motion track of the conical blocks; the moving directions of adjacent two moving blocks are opposite. The screening device can solve the problem that the existing crushing device cannot clean and collect the impurities remaining on the screen.

The invention discloses a full-section rotary type automatic raw coal sampling machine which is characterized in that a sampling mechanism extends to a position below an output position of a conveyor belt I, and a buffer plate is in rotary contact with a damping device; the collecting mechanism is assembled on the side face of the damping mechanism, the sampling mechanism is rotationally connected with the collecting mechanism, an auxiliary overturning mechanism is arranged between the sampling mechanism and the collecting mechanism, and the auxiliary overturning mechanism can assist the sampling mechanism to rotate on the side, located on the collecting mechanism, of the sampling mechanism; the collecting device comprises a collecting mechanism, conveying mechanisms fixed to the two sides of the collecting mechanism and sliding positioning mechanisms fixed to the two sides of the collecting mechanism, and the problems that at present, due to the fact that coal briquettes have certain weight, the coal briquettes still need to be thrown to the discharging position after cutting off coal and receiving the coal, and the service life of material taking equipment is easily shortened under impact of long-term sampling; and the coal briquettes are easy to crack under impact, so that the raw coal is difficult to accurately sample according to the size of the raw coal.

The utility model relates to the technical field of medium-speed coal mills, in particular to a scraper blade in an air duct of a medium-speed coal mill, which comprises a base and further comprises a mill body arranged at the top of the base and used for grinding coal briquettes, connecting plates are arranged on the front side and the rear side of the surface of the mill body, mounting holes are formed in the surfaces of the connecting plates, and the connecting plates are arranged in the mounting holes. A mounting plate is arranged on one side of the connecting plate; through cooperation of a connecting plate, a mounting plate and a second bolt, a worker can conveniently maintain and dismount the scraper body in the later period, the use strength and toughness of the scraper body can be improved through reinforcing ribs, the wear-resisting plate can be located in an inner cavity of the positioning shell through the wear-resisting plate, the wear-resisting plate plays a role in preventing materials from scouring the scraper body, and the service life of the scraper body is prolonged. And through cooperation of a first bolt, a locking gasket and a gear ring, the situation that the scraper body is affected by equipment operation to cause vibration, and consequently the abrasion-resistant plate is prone to loosening can be avoided.

The utility model belongs to the technical field of coal mine impurity removing equipment, and particularly discloses a raw coal impurity removing and screening mechanism which mainly comprises a base, a grate type screening unit and a rotary roller claw type screening unit. According to the utility model, the grate type screening unit is arranged, so that coal briquettes with smaller volumes can smoothly fall into the stock bin below through gaps between the swing rods, and impurities with larger volumes are temporarily intercepted on the swing rods to wait for subsequent rotary throwing treatment by the rotary roller claw type screening unit; meanwhile, the oil cylinder is arranged to drive the swing rod to swing by a certain amplitude, coal briquettes can be prevented from being clamped in a gap of the swing rod, and favorable conditions can be provided for the subsequent rotary throwing process; the screening mechanism is further provided with a rotating roller claw type screening unit, a gear motor and a cam divider are used for providing power, a claw is driven to rotate intermittently, and large sundries intercepted on a swing rod can be thrown into a recycling box arranged at the other end of the base in a rotating mode to wait for follow-up treatment.

The utility model discloses a protective sealing device for pulverized coal production, which comprises a flour mill body, a discharge pipe and a machine body input pipe, the discharge pipe is mounted at the bottom of the flour mill body, the machine body input pipe is arranged at the top of the flour mill body, a sealed feeding device is mounted at the top of the machine body input pipe, and the sealed feeding device comprises a horizontal conveying pipe. A discharging square pipe is welded to the bottom of the material conveying pipe and connected with the machine body input pipe, a feeding square pipe is welded to the top of the material conveying pipe, the discharging square pipe and the feeding square pipe are not located on the same vertical line, a feeding hopper is welded to the top of the feeding square pipe, a sealed material pushing device is installed in the material conveying pipe, an air cylinder is fixedly installed at the right end of the material conveying pipe, and an output shaft is fixed to the right end of the sealed material pushing device. A vent hole is formed in the left end of the conveying pipe. Blanking of coal briquettes can be controlled without manual work, one position of the blanking square pipe and one position of the feeding square pipe are kept to be communicated with the interior of the conveying pipe, the other position of the blanking square pipe and the other position of the feeding square pipe are kept to be closed, sealing performance during blanking is guaranteed, and excessive dust in the flour mill body is prevented from flying out of the feeding square pipe during feeding.

The utility model relates to the field of coal washing equipment, in particular to a coal washing device which comprises a feeding box, a stirring shaft and a hollow supporting plate, a rotating stud is arranged at the upper end of a device shell, the outer side of the rotating stud is meshed with a mounting block, the feeding box is welded to the upper end of the mounting block, and a feeding pipe is arranged at the upper end of the feeding box. A feeding box is arranged at the upper end of the device shell, a feeding pipe is arranged at the lower end of the feeding box, a hollowed-out supporting plate is arranged in the device shell, a stirring shaft is arranged above the hollowed-out supporting plate, and stirring blades are arranged on the side face of the stirring shaft. The coal quality and utilization rate are improved; and the position of the feeding box is adjusted by rotating the stud, so that the coal briquettes are uniformly distributed on the hollow supporting plate, and the cleaning effect is improved.

The application discloses a coal quantity metering device for mine through-hole drilling hydraulic punching, which comprises a mobile track, a bottom plate arranged on the top of the mobile track, a lifting foot arranged on the left side of the bottom plate, a water tank fixedly connected to the top left side of the bottom plate, a water discharge mechanism arranged on the top left side of the bottom plate, a flameproof vibration source motor arranged on the top right side of the water discharge mechanism, a metering linkage conveying device arranged on the front right side, and a control cabinet fixedly connected to the top right rear end of the bottom plate. When separating coal water, the coal water in the filter tank is filtered by the filter plate, and the fine sludge is guided into the bottom of the water tank through the drain pipe. When the filter tank vibrates up and down, the supporting frame shakes up and down, and the lower pressing plate impacts the arc-shaped frame. When the arc-shaped frame is impacted, the filter plate on the top of the arc-shaped frame rises, the coal blocks with greater weight in the filter tank are lifted to the right side, and the coal blocks are conveyed to the right side, so that the coal block conveying is more convenient.

The invention relates to the technical field of raw coal washing and separation, and discloses a multi-stage crushing device for raw coal washing and separation, which comprises a shell, a feeding frame arranged at the top end of the shell, a crushing roller rotationally connected in the shell, a filter screen arranged in the shell, a conveying belt arranged on one side of the shell, and a screening assembly rotationally connected in the shell, crushed coal briquettes fall onto a filter screen and a sieve plate, small particles enter the next link through the filter screen, large coal briquettes circulate back to a feeding frame through the sieve plate to be crushed again, the coal briquettes subjected to primary crushing are subjected to reciprocating motion of an arc plate to be matched with a guide plate to achieve secondary extrusion crushing, then the coal briquettes fall onto a first separation plate and a second separation plate, and classification screening is completed through vertical reciprocating motion of the separation plates. Meanwhile, coal briquettes on the surface of the separation plate make contact with nail blocks at the bottom end of the arc plate to achieve re-crushing, and the nail blocks can dredge separation plate holes. According to the device, through cooperation of multi-stage crushing and graded screening, the raw coal crushing uniformity and efficiency are improved.

The invention belongs to the technical field of belt conveyor pretreatment equipment, and particularly relates to a coal briquette pretreatment device for a belt conveyor, which comprises a crusher main body, and a treatment box is fixedly connected to the crusher main body. The technical means that the crusher body and the treatment box are matched is adopted, preliminary particle size screening is conducted on input materials through the screening inclined plate arranged in an inner cavity of the treatment box, the materials with the large particle size and the small particle size enter the first rotating cylinder and the second rotating cylinder correspondingly, and the first rotating cylinder conducts heating treatment on the materials with the small particle size through the arc-shaped electric heating plate and the striker plate and conducts fixed-weight discharging; and when the second rotating cylinder rotates, a first arc-shaped abutting rod is matched with a spring set to drive a guide plate and other components to move, and the blended materials are intermittently conveyed to the feeding end of the crusher, so that resource waste is avoided, the operation process of equipment is simplified, and the working efficiency is improved. And the overall maintenance cost of the equipment can be reduced.

The invention belongs to the technical field of coal briquette crushing, and discloses a multi-stage collaborative crushing device for preparing coal water slurry, which comprises a shell, a first-stage crushing wheel and a second-stage crushing wheel, and further comprises a rotating assembly arranged at the middle end of an inner cavity of the shell; the moving assembly is mounted on the outer side of the shell; the third-stage crushing part is movably connected to the interior of the shell and located below the rotating assembly; wherein the rotating assembly comprises a driving piece arranged on the shell; through cooperation of structures such as a first-stage crushing wheel, a second-stage crushing wheel, a rotating assembly and a third-stage crushing part, coal briquettes are subjected to primary crushing through the first-stage crushing wheel through a feeding port of the shell, crushed coal falls to the top face of a second discharging plate, secondary crushing is conducted through back-and-forth movement of the second discharging plate, and the crushing efficiency is improved. Through mutual cooperation of multi-stage crushing, the crushing effect is greatly improved, meanwhile, multi-functional limitation is conducted on single equipment, and the use cost is reduced.

The application discloses a coal block crusher cleaning device, relates to the technical field of coal mine production, and improves the problems that if the effective interval adjustment of the brush plate is difficult, on one hand, it is difficult to maintain stable cleaning strength only by intermittent extrusion force, leading to incomplete cleaning of coal cinder, on the other hand, the coal cinder that is not cleaned in time can be mixed into a subsequent processing flow, affecting the quality of coal products, reducing the market competitiveness of products and the like, and comprises a box body, the cleaning mechanism comprises an electric cylinder and a push plate, and the other side surface of the push plate is fixedly provided with brush strips and spraying pipes respectively, the application can stably move the push plate installed at the output end through the cleaning mechanism, the brush strips and the spraying pipes connected with the push plate follow synchronously, through the linkage design, the brush strips and the spraying pipes can be accurately close to the crushing mechanism, efficient cleaning and flushing of residual materials on the surface of the crushing equipment are realized, and the cleaning effect is obviously improved.

The invention belongs to the technical field of coal briquette screening equipment, and particularly relates to a fluctuating multi-element screen which comprises a fluctuating multi-element screen body, guardrails are hinged to the two sides of the top end of the fluctuating multi-element screen body through hinges, and a feeding hopper is fixedly connected to a feeding opening of the fluctuating multi-element screen body through bolts. And the inner wall of the feeding hopper is fixedly connected with a coal briquette material pretreatment mechanism. The fluctuating multi-element screen has the functions of detecting the humidity of coal briquette materials, drying and reducing the surface adhesion force, and also has the capability of collecting fine coal powder in the coal briquette materials, so that the fine coal powder can be collected and reused, the environmental protection performance of the fluctuating multi-element screen can be improved, the body health of workers is guaranteed, and the working efficiency is improved. And in addition, the situation that screen holes in the fluctuating multi-element screen are interfered by fine pulverized coal with large adhesion force can be avoided, the grading screening effect of coal briquette materials in the fluctuating multi-element screen is improved, and the use reliability of the fluctuating multi-element screen is improved.

The utility model relates to the technical field of coal mining and processing, in particular to a coal washing pool for coal processing, which comprises a water injection tank, the left end of the water injection tank is fixedly connected with a water inlet pipe, the inside of the water injection tank is fixedly connected with a partition plate, the right end of the water injection tank is fixedly connected with a washing pool, and the left side of the washing pool is fixedly connected with an inclined plate. The coal briquette cleaning device comprises a cleaning pool, the lower surface of the cleaning pool is fixedly connected with convex blocks which are distributed in a linear mode, the interior of the cleaning pool is rotationally connected with a rotating shaft, and the two ends of the rotating shaft penetrate through the surface of the cleaning pool. And meanwhile, a second gear is driven to rotate through a coupler, the second gear and a first gear drive a rotating shaft to rotate under the meshing effect, a stirring plate fixedly connected with the rotating shaft and a limiting wheel stir the cleaning liquid, and the effect of fully cleaning attachments on the surfaces of the coal briquettes is achieved.

The utility model discloses a crushing impeller of a fan coal mill, and relates to the technical field of impellers of fan coal mills. The crushing impeller comprises an impeller body, a bearing disc is arranged above the impeller body, a plurality of groups of serrated knives are fixed at the top of the bearing disc in an annular array shape, and base cylinders connected with the impeller body are arranged in the serrated knives; multiple sets of L-shaped notches are formed in the outer wall of the curved surface of the impeller body in an annular array shape, and main blades are assembled at the positions, located at the top of the impeller body, of the edges of the multiple sets of impeller bodies at intervals. According to the utility model, the force bearing disc bears the force generated when coal briquettes fall off and plays a role in preliminary scattering, the auxiliary sheets and the main blades at the bottom can promote the coal briquettes to move back and forth in the radial direction, the scattering path of the coal briquettes is longer, and meanwhile, the main blades and the auxiliary sheets which rotate at a high speed are utilized to fulfill the aim of comprehensively scattering the coal briquettes; and coal briquettes below can be conveniently and efficiently ground, so that the working efficiency of the pulverizer is improved in a disguised manner.

The utility model relates to a fuel crusher, which belongs to the technical field of fuel crushers, and comprises a crusher case, two crushing rollers, a bucket-shaped feeding machine and a screening net, the crusher case is fixedly communicated with a fuel feeding hopper, a crushing box is fixedly mounted on the inner wall of the crusher case, the crushing rollers are rotatably connected with the crushing box, and the screening net is fixedly connected with the crushing box. The two crushing rollers are fixedly connected with bearing gears, the bearing gears on the two sides are connected in a meshed mode, the crusher case is fixedly connected with a motor box, the motor box is fixedly connected with a stepping motor, the driving end of the stepping motor is fixedly connected with the crushing rollers, a material guide groove is formed in the inner wall of the crusher case, and the bucket type feeding machine is installed in the crusher case. According to the utility model, coal briquette fuel can be quickly screened, fine qualified fuel can be quickly discharged for use, and large fuel can be repeatedly fed for re-crushing treatment, so that the crushing effect of the fuel can be effectively improved, and sufficient combustion is ensured.

The invention discloses a mine unmanned clearance device based on visual navigation and an operation method and an installation method thereof, and relates to the technical field of coal mine desilting. A rotating base is arranged below a top fixing frame, lifting pieces are symmetrically arranged on the rotating base, and the ends, away from the rotating base, of the lifting pieces are connected with a fixing base; one end of the fixed base is connected with a cutting assembly through a telescopic arm, and the fixed frame is fixedly arranged at one end of the telescopic arm; the detection piece is arranged at one end of the fixing frame and used for detecting the coal accumulation state of the inner wall of the coal bunker body; the crushing part is arranged on one side of the detection part and connected with the detection part, and when the detection part detects that the accumulated coal in the coal bunker body is in a hardened state, the detection part drives the crushing part to do reciprocating motion to crush hardened coal briquettes; and the dredging piece is arranged on one side of the crushing piece and connected with the detection piece, and when the detection piece detects that the accumulated coal in the coal bunker body is in a loose state, the detection piece drives the dredging piece to dredge the loose accumulated coal.

The present application relates to the technical field of coal mine screening, and specifically discloses a coal mine screening device for coal mining, which comprises a rack, a screening unit, a driving unit and a dredging unit. The dredging unit is arranged between two layers of screen meshes, and the paddle thereof is periodically reciprocatingly rotated under the driving of the driving member to continuously stir the material on the second screen mesh, effectively breaking the arching effect of small coal blocks and ensuring the smoothness of the screening channel. A flow channel and a jet groove are arranged in the rotating shaft and the paddle of the dredging unit, and when the paddle is rotated to the optimal angle perpendicular to the screen mesh, the gas supply member instantaneously sprays a gas flow to the mesh hole, powerfully removing foreign matters and sticky coal sludge stuck in the mesh hole and effectively solving the problem of screen mesh blockage. Meanwhile, the capillary water film formed between the sticky coal sludge and the surface of the screen mesh is broken, the separation and shedding of water are accelerated, the water content of the small coal blocks screened finally is effectively reduced, and the quality of the coal product is effectively improved.

The utility model discloses an efficient coal breaking device for a coal face, and belongs to the technical field of coal mining. The coal breaking device comprises a breaking groove, the top of the breaking groove communicates with a feeding port, the back face of the feeding port is fixedly connected with an L-shaped fixing strip, and the L-shaped fixing strip is provided with a reciprocating dredging mechanism; the reciprocating dredging mechanism comprises two limiting sleeves and a first motor. The ends, opposite to the L-shaped fixing strip, of the two limiting sleeves are sleeved with sliding connection strips. The sliding connection strip is fixedly connected with two transmission shafts. The sliding connecting strip is fixedly connected with an L-shaped connecting strip, the bottom of the L-shaped connecting strip is fixedly connected with a dredging scraping head, the output end of the first motor is fixedly connected with a three-edge rotating strip, and the three-edge rotating strip rotates to drive the two transmission shafts to reciprocate up and down. The reciprocating dredging mechanism is arranged to scrape and dredge the inner wall of the feeding port, the residue phenomenon is reduced, large coal briquettes are preliminarily scattered, the coal briquettes can be effectively prevented from being accumulated and agglomerated at the feeding port, and therefore the blocking phenomenon is avoided.

The invention relates to the technical field of preparation equipment, in particular to a double-upper-elastic-plate sorting system which comprises a first ejection executing mechanism and a second ejection executing mechanism which are arranged towards the conveying tail end of a material conveying unit, the material conveying unit conveys materials on the material conveying unit to the conveying tail end in the X-axis direction, the materials do falling motion at the conveying tail end, and the first ejection executing mechanism and the second ejection executing mechanism are arranged on the conveying tail end. The first ejection executing mechanism and the second ejection executing mechanism are arranged on the outer side of a material track coverage area along a material falling body motion track; and the execution part of each execution unit of the first ejection execution mechanism and the second ejection execution mechanism performs reciprocating displacement motion towards the inner side of the motion trail of the material falling body, and is selectively started to hit the target material. Gangue removal and coal briquette grading are synchronously carried out, and materials with different particle sizes are covered; identification signals are accurately responded, target materials are hit in a targeted mode, and the sorting precision is high; the structure is compact, the action is efficient, the beneficiation efficiency is greatly improved, and energy consumption and labor cost are reduced.

The utility model relates to the technical field of conveyors, and provides a rubber belt anti-tearing protection device which comprises a support, a trigger rope and at least one set of deviation sensors, the support is fixedly installed between the upper belt face and the lower belt face of a belt conveyor, and each set of deviation sensors are installed on the left side and the right side of the support respectively in the width direction. The two ends of the trigger rope are connected to the left deviation sensor and the right deviation sensor respectively, and the trigger rope stretches across the belt conveyor. According to the anti-tearing protection device for the adhesive tape, through the combination of the trigger rope and the deviation sensor, the tearing condition can be detected when the adhesive tape is torn but not broken and coal briquettes do not fall off, the detection time is greatly shortened, the detection accuracy and reliability are improved, and the technical problem that an existing anti-tearing protection device for the adhesive tape is inaccurate in detection is solved.

The invention relates to the technical field of state monitoring of mining conveyors, and discloses an intelligent inspection device based on a scraper conveyor, which solves the problem of low stability, and comprises a scraper conveyor, a moving main body is arranged at the top of the scraper conveyor, and a pulse crushing head is arranged on the left side of the moving main body. A grabbing rod manipulator is arranged on the right side of the moving body, a grabbing rod head is arranged at the bottom of the grabbing rod manipulator, a storage box is fixed to the front end of the moving body, two sliding shoes are arranged at the bottom of the rear end of the moving body, a plurality of moving gears are arranged at the bottom of the front end of the moving body, and cleaning shafts are arranged on the outer sides of the two moving gears at the outermost end. According to the invention, the millimeter wave radar and the industrial camera are matched to find large coal briquettes and anchor rods, so that the inspection accuracy is ensured, and meanwhile, the clamping ring can be moved to the required position through the matching of the large arm supporting block, the mechanical large arm, the small arm reversing head, the mechanical small arm and the clamping rod reversing head, so that the inspection accuracy is ensured.