225 results about "Briquetage" patented technology

The invention discloses a system and device for real-time on-line detection of separation coarse particles of a coal preparation plant, and the system comprises a rack, and also comprises a flattening assembly used for avoiding mutual stacking of coal briquettes; the anti-stacking assembly is used for layering the coal briquettes; the flattening assembly comprises a lead screw, a sliding sleeve, a connecting plate, a guide rod and a sliding block, the lead screw is rotationally connected with the rack, the sliding sleeve is in threaded connection with the lead screw, the sliding sleeve is in sliding connection with the rack, the connecting plate is fixedly connected with the sliding sleeve, the guide rod is fixedly connected with the connecting plate, the sliding block is in sliding connection with the guide rod, and the sliding block is in sliding connection with the guide rod. A pressing cylinder is rotationally connected to the sliding block and used for rolling on coal briquettes, and the screen is connected with a transmission assembly; according to the invention, the precision of rough recognition can be effectively improved.

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 invention relates to the technical field of raw coal impurity removal, and particularly provides a raw coal impurity removal anti-blocking device. By arranging the feeding primary screening mechanism, coal powder is filtered out through a flow guide plate, and by arranging a first-stage material uniformizing device and a second-stage material uniformizing device, coal can be evenly dispersed, and the phenomenon that the device is blocked due to accumulation of the coal is prevented; the belt type iron removal mechanism is additionally arranged, metal impurities in raw coal are adsorbed through the magnetism of an electromagnet, and the discharging quality of coal is guaranteed; the grate type screening unit is additionally arranged, so that coal briquettes with small sizes can smoothly fall into a stock bin below through gaps between swing rods, and impurities such as stones with large sizes are temporarily intercepted on the swing rods and wait for follow-up rotary throwing treatment of the rotary roller claw type screening unit; and a rotating roller claw type screening unit is arranged, a first gear motor and a cam divider are used for providing power, a claw is intermittently driven to rotate, and large sundries can be thrown into a sundry recycling box.

The utility model relates to the field of coal briquette crushing, in particular to a coal briquette crushing device for coal washing, which comprises a feeding pipe, a crushing roller and a filter screen, the feeding pipe is arranged at the upper end of a device shell, the crushing roller is arranged in the device shell, the filter screen is obliquely arranged below the crushing roller, and connecting blocks are arranged on two sides of the filter screen. A recycling box is arranged on the left side of the device shell, a rotating shaft is arranged below the filter screen, smashing blades are arranged at the upper end and the lower end of the rotating shaft, and a movable sleeve is fixedly connected with the inner wall of the device shell. The multi-stage crushing device has the beneficial effects that coal briquettes can be subjected to multi-stage crushing, so that the crushing effect of materials is improved, and the coal quality requirements for different purposes are met; coal briquettes with different sizes can be screened, coal products with different granularities are separated, and the utilization rate of resources is increased; and chippings and dust generated during crushing of coal briquettes can be recycled, so that environmental pollution is reduced, and the ecological environment is protected.

The power plant coal conveying device capable of preventing coal falling comprises a belt conveyor which is arranged obliquely, a tail end intercepting assembly is arranged at the low end of the belt conveyor, and side wing shielding assemblies are arranged on the two sides of the belt conveyor in the conveying direction; the tail end intercepting assembly comprises a tail frame, and the outer side wall of the tail frame is fixedly connected with a height adjusting mechanism. The side wing shielding assembly comprises multiple sets of vertical rods arranged on the rack on the two sides of the belt conveyor, the multiple sets of vertical rods on the same side are arranged in parallel, the top ends of the multiple sets of vertical rods on the same side are hinged to the same baffle, and a telescopic power piece hinged to the baffle is hinged to the belt conveyor. The tail end intercepting assembly is arranged, the tail frame is used for intercepting coal briquettes falling downwards, the height adjusting mechanism can be used for adjusting the height of the tail frame according to the size of the falling coal and the actual working condition, meanwhile, baffles of the side wing shielding assemblies are controlled to shield the falling coal on the side faces, and the coal briquettes are prevented from falling from the side edges.

The utility model discloses a comprehensive coal digging device which comprises a fixing plate, the upper surface of the fixing plate is fixedly connected with two right-angle plates, the bottom face of each right-angle plate is fixedly connected with a clamping block with a hole, and the upper surfaces of the two right-angle plates are jointly and fixedly connected with a lifting handle. According to the device, through the cooperation of the mounting hole, the right-angle plate and the clamping block with the hole, the device can be conveniently mounted at the fully-mechanized coal winning machine, the purpose of collecting coal briquettes falling off when the fully-mechanized coal winning machine works is achieved, through the cooperation of the arc-shaped baffle and the supporting plate, the effect of protecting the spiral conveying shaft is achieved, and the service life of the spiral conveying shaft is prolonged. According to the coal briquette conveying device, the purpose of protecting the spiral conveying shaft and the spiral blades is achieved through cooperation of a reinforcing plate and an arc-shaped baffle, the problem that falling coal briquettes damage the spiral conveying shaft and the spiral blades is avoided, through cooperation of a driving motor, the spiral conveying shaft and the spiral blades, the coal briquettes are conveniently conveyed, and the using effect of the device is improved.

The invention provides a split-flow double-conveying-belt conveyor integrated with an ultrasonic crushing and water spraying dust removal system, and particularly relates to the technical field of conveyor equipment. The conveyor comprises an upper conveying mechanism, a lower conveying mechanism, a base plate and side plates located on the left side and the right side of the base plate. The upper conveying mechanism and the lower conveying mechanism are located between the two side plates and arranged in a staggered mode. Ultrasonic crushing devices and a plurality of spraying heads arranged at equal intervals are arranged at the positions, close to the front ends of the upper conveying mechanism and the lower conveying mechanism, of the inner side walls of the two side plates. The plurality of spray headers are positioned above the ultrasonic crushing device and close to the front end of the upper transmission mechanism; and an electric control box and an equipment box are arranged on the outer side wall of one side plate. The problem that when a traditional conveyor transports large coal briquettes, the large coal briquettes are prone to being accumulated and blocked, and equipment abrasion is caused is solved, the transportation efficiency is improved, meanwhile, the influence of dust on the working environment is improved, and then the body health of workers is ensured.

The invention relates to the technical field of coal conveying, and discloses a coal conveying device for a thermal power plant, which comprises a frame body, a conveying belt is arranged between the inner walls of the two sides of the frame body, a plurality of supporting frames are fixed on the top of the frame body through bolts, and a liquid separation pipe is rotatably connected between the inner walls of the two sides of each supporting frame. A plurality of evenly-distributed atomizing nozzles are fixed to the bottom of the liquid distribution pipe through threads, a connecting pipe is fixed to the outer wall of one side of each supporting frame through a bolt and communicates with one end of the liquid distribution pipe, and a coal briquette position adjusting mechanism is arranged between the inner walls of the two sides of the bottom ends of the multiple supporting frames. According to the coal briquette smashing device, the liquid distribution pipe and the atomization nozzles are arranged, the atomization nozzles spray water, so that coal briquettes are wetted, the surfaces of the coal briquettes are wetted, the purpose of reducing dust is achieved, the coal briquettes are not prone to combustion due to the fact that the coal briquettes are wetted, the temperature rise of the coal briquettes is slow when the coal briquettes are smashed, and the safety of coal briquette smashing is improved.

The utility model belongs to the technical field of devices for removing or transporting excavated materials or gangues, and particularly provides a reversed loader for a coal mine and a material receiving system of the reversed loader. The material collecting system comprises a rack, a feeding port and a conveying mechanism are arranged on the rack, a coarse crushing mechanism and a fine crushing mechanism which are arranged in the feeding direction of the conveying mechanism are arranged on the rack, and the crushing particle size of the coarse crushing mechanism is larger than that of the fine crushing mechanism. The reversed loader for the coal mine comprises the material receiving system. The coarse crushing mechanism can pre-crush large coal briquettes and gangues, small coal briquettes and gangues can normally pass through the coarse crushing mechanism in the pre-crushing process, and the fine crushing mechanism only needs to crush the coal briquettes and gangues which are crushed or directly pass through the coarse crushing mechanism. The coarse crushing mechanism and the fine crushing mechanism do not need high configuration, and the overall crushing efficiency is also improved.

The invention relates to the technical field of dust suppression, in particular to a coal conveying belt spraying dust suppression device which comprises a supporting component, a support, a movable assembly arranged on the support, a conveying assembly arranged on the movable assembly and an extrusion assembly arranged on the support. The dust suppression component comprises a spraying assembly arranged on the support and a rotating assembly arranged on the spraying assembly, when coal briquettes fall onto a movable assembly, the movable assembly senses falling coal and drives the dust suppression assembly to spray water mist after coal falling, the dust suppression assembly can enable the sprayed water mist to be different in distance and length when the water mist is sprayed, and the rotating assembly is arranged on the spraying assembly. Therefore, the dust suppression range is large, diffusion of dust is suppressed to the maximum extent, and the device also avoids slipping of accumulated water on a conveying piece due to excessive spraying.

The invention relates to the technical field of conveyors, in particular to a coal mine scraper conveyor which comprises a rack, a driving part is arranged on one side of the rack, a driving roller and a driven roller are arranged on the rack, the driving roller is arranged at the output end of the driving part, a conveying chain is arranged on the driving roller and the driven roller, and a scraper mechanism is arranged on the conveying chain. The coal conveying device has the beneficial effects that by arranging the scraper mechanism, when there are many coal briquettes on one side of the contact plate, the coal briquettes on the side with many coal briquettes are pushed to the side with few coal briquettes, it is ensured that the coal briquettes are evenly distributed on the side, away from the middle plate, of the contact plate, the conveying chains on the two sides of the connecting plate are made to be identical in stress, and the synchronization degree of the conveying chains on the two sides of the connecting plate is ensured; the situation that the conveying chains are broken due to the fact that meshing between the conveying chains and the driving roller and meshing between the conveying chains and the driven roller are staggered due to deviation of the synchronism of the conveying chains on the two sides of the connecting plate is avoided, and normal operation of the conveyor is guaranteed.

The invention belongs to the technical field of mining conveyors, and particularly relates to a mining scraper conveyor with a function of preventing wet and sticky materials, which comprises material pushing plates, chains are arranged on two sides of each material pushing plate, and two adjacent material pushing plates are matched with two chains to define a middle material storage area; a plurality of rows of push rods are arranged on the outer side face of the chain in the conveying direction, the distances between every two adjacent rows of push rods are the same, and the push rods divide the area between every two adjacent material pushing plates into a plurality of lateral material storage areas; the lateral hopper is located over the lateral material storage area and used for guiding first coal briquettes with the approximate length, width and thickness into the lateral material storage area, and the maximum length of the first coal briquettes is smaller than the distance between every two adjacent push rods; the middle hopper is located over the middle material storage area and can guide pulverized coal and second coal briquettes into the middle material storage area. By arranging conveyed coal materials, wet and sticky materials in the conveyor are automatically removed in the coal material conveying process.

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 invention belongs to the technical field of coal mills, and particularly relates to a discharging screening type intelligent coal mill which comprises a coal crushing assembly, the coal crushing assembly comprises a shell and a plurality of supporting legs evenly and fixedly connected to the bottom face of the shell, the coal grinding assembly is arranged in the shell, and a slag collecting assembly is arranged below the shell. A dust suction device is arranged on one side of the shell, and a drying device is arranged below the shell. Before the coal briquettes are ground, the dug coal briquettes are processed and smashed, so that the sizes of the coal briquettes are almost similar, a grinding table and a grinding roller are cleaned, pulverized coal is prevented from being adhered to the surface of the grinding table or the surface of the grinding roller due to extrusion, the pulverized coal is dried, the water content of the pulverized coal is reduced, and the coal briquettes are crushed. And the device also has the characteristics of collecting crushed coal briquettes which are not processed to be qualified and carrying out secondary grinding.

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 scraper conveyors, and discloses a wear-resistant scraper conveyor middle trough which comprises two side plates, a middle plate is fixedly connected between the middle ends of the two side plates, and a sound insulation plate is fixedly embedded in the middle plate. According to the wear-resistant scraper conveyor middle trough, the rolling columns are arranged on the bottom plate, so that a chain can be supported when the chain returns, the direct friction pressure between the chain and the bottom plate is effectively reduced, the overall wear resistance is greatly improved, and the service life of equipment is remarkably prolonged; the lubricating system conveys lubricating liquid in a water tank into a spray pipe through a pump body, and then the lubricating liquid is sprayed to the surface of the middle plate by a nozzle at a downward inclined angle. By means of the design, it is ensured that the middle plate can continuously obtain a proper amount of stable lubricating liquid in the working process, dry friction and additional abrasion caused by insufficient lubrication are effectively avoided, and meanwhile high-temperature coal gangue or coal briquettes can be cooled.

The invention relates to the technical field of coal sample detection, and discloses a coal briquette grinding device for coal sample detection, which comprises a device body, four groups of grinding cavities arranged among five groups of partition plates, and mounting cavities arranged on two sides of an inner cavity of the device body, the coal sample processing part is arranged in an inner cavity of the device body, and the vibration cleaning part is arranged on the coal sample processing part. According to the coal briquette grinding device for coal sample detection, through the arrangement of the four sets of grinding cavities and the grinding rollers in the device body, various coal samples can be treated at the same time, the total time needed for grinding is remarkably shortened, and compared with a traditional device which can only grind one coal sample at a time, the grinding efficiency can be greatly improved; and meanwhile, due to the design that one group of first motors drive four pairs of grinding rollers to rotate and grind, equipment resources are utilized more sufficiently, and each pair of grinding rollers can work independently and do not interfere with one another in the grinding process.

The invention discloses a variable-diameter cutting device, a thin seam mining machine and a thin seam mining system, the variable-diameter cutting device comprises a roller and a plurality of spiral blades, and the end face of the first end of the roller is provided with a plurality of first cutting teeth; the spiral blades are spirally arranged on the peripheral face of the roller in a winding mode, the multiple spiral blades are arranged in the circumferential direction of the roller at intervals, and the distance between every two adjacent spiral blades in the circumferential direction of the roller is gradually increased in the direction away from the first end of the roller. When the cutting device works, cut coal briquettes move to the scraper conveyor side along the intervals between the spiral blades. As the distance between the spiral blades is increased, the discharging speed of the coal briquettes from the distance between the spiral blades is gradually increased, the coal briquette conveying efficiency of the cutting device is improved, the coal mining speed is increased, and the problem that the cutting operation is affected by coal briquette blockage is effectively solved.

The invention relates to the technical field of coal briquette processing, and discloses coal briquette pulverizing equipment which comprises a supporting seat, a screening box is fixedly connected to the top of the supporting seat, a pulverizing cylinder is fixedly connected to the top of the screening box, a feeding hopper is fixedly connected to the top end of the pulverizing cylinder, a first pulverizing mechanism is arranged in the pulverizing cylinder, and a second pulverizing mechanism is arranged in the supporting seat. And an air outlet hole is formed in the inner wall of one side of the screening box, a fan is fixedly connected into the air outlet hole, a slope block is fixedly connected to the inner wall of the bottom of the supporting base and is opposite to the fan, and a first clamping plate is fixedly connected to one side of the slope block. According to the coal briquette grinding device, the inner grinding disc is driven by the double-shaft-extension asynchronous motor to rotate, so that coal briquettes are ground under the cooperation of the outer grinding disc, then the rotating shaft is driven by the double-shaft-extension asynchronous motor to rotate, so that the grinding arms are driven to rotate on the grinding disc, coal particles are ground, and the coal briquettes are fully ground.

The invention provides a crushing device for a coal washer. The crushing device comprises a crushing assembly, and the crushing assembly comprises an operation shell, two first gears, a transmission mechanism, a stirring, guiding and sealing mechanism, a servo motor, two crushing rollers and two first transmission rods; one first gear drives a feeding sealing roller to rotate through a transmission mechanism, the feeding sealing roller drives a plurality of second gears to rotate on an outer gear ring, the second gears drive a third transmission rod to rotate, and the third transmission rod drives a plurality of shifting plates to rotate; according to the coal briquette crushing device, coal briquettes in a feeding through hole are preliminarily crushed and moved into an arc-shaped feeding groove, then the coal briquettes in the arc-shaped feeding groove are stirred and conveyed to a crushing roller through a stirring plate, a crushing channel can be blocked through a feeding sealing roller, dust is prevented from overflowing when the coal briquettes are crushed, and therefore the production environment and the physical and psychological health of workers are guaranteed; and the material blocking condition is avoided, so that the working efficiency is improved.

The invention discloses an European silo coal drop pipe bottom blockage coal cleaning robot which comprises a shell and a self-adaptive abutting mechanism arranged in the shell, the self-adaptive abutting mechanism comprises a driving wheel, a driven wheel, a connecting base and a connecting rod, the driving wheel is rotationally connected to the connecting base, and the connecting base and the driven wheel are both slidably connected to the shell; one end of the connecting rod is connected with the connecting seat, and the other end is connected with the driven wheel; the water gun nozzle is movably arranged on the shell; a driving wheel and a driven wheel which are slidably arranged in the shell are attached to a handrail at the bottom of the European bin, and the shell is driven by the driving wheel to move on the handrail. According to the robot for cleaning blocked coal at the bottom of the European silo coal falling pipe, coal briquettes at the bottom of the European silo can be cleaned through the water gun spray head movably arranged on the shell, the shell is driven to move on the handrail through cooperation with the driving wheel, the coal briquette cleaning range can be enlarged, manual cleaning is replaced with the robot for cleaning the coal briquettes, and the cleaning efficiency is improved. The cleaning efficiency is greatly improved, and the labor intensity of workers is reduced.

The utility model relates to a crusher sealing gasket and a cover plate, which effectively solve the problems that pores on a cover plate in a traditional crusher are easy to block and the like. Comprising a supporting frame arranged on the horizontal plane, a base is rotationally connected to the supporting frame, a smashing cylinder is coaxially fixed to the base, a pneumatic motor is fixed in the base, a rotating shaft penetrating through the smashing cylinder is rotationally connected in the smashing cylinder, multiple sets of smashing blades are coaxially fixed to the rotating shaft, and the multiple sets of smashing blades are located in the smashing cylinder; the device is ingenious in structure and convenient to use, through the arrangement of the bottom plate, the connecting cylinder, the pressing plate and the like, coal briquettes with large particle sizes cannot get close to the middle of the bottom plate in the crushing process, small particles can stay in the buffering cavity, only gas penetrates through the through groove and the thin holes in the cover plate to enter the collecting pipe and finally enters a gas detector to be detected, and the detection efficiency is improved. Compared with an existing small pulverizer, the problem that filter holes of the cover plate are blocked is reduced or even completely eradicated in the mode, and the detection efficiency is greatly improved.

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 invention provides a circulating fluidized bed with low abrasion and stable combustion, and relates to the related field of circulating fluidized beds, the circulating fluidized bed comprises a hearth, a loading frame and a coal briquette crushing mechanism, by arranging the coal briquette crushing mechanism, after coal briquettes are crushed by a coal briquette crusher, the coal briquettes are screened by a screen plate in a screening box firstly, and then the coal briquettes are sieved; screened pulverized coal falls onto a first conveying belt assembly of the adjustable screening assembly, a circulating baffle plate assembly is arranged on the first conveying belt assembly, the pulverized coal conveyed on the first conveying belt assembly is blocked through a circulating baffle plate, and the size of a gap between the circulating baffle plate and the first conveying belt assembly is controlled; the conveying belt assembly is arranged in the hearth and used for blocking pulverized coal particles larger than the gap and pushing the pulverized coal particles leftwards, so that pulverized coal with the needed particle size is conveyed rightwards into a hopper of the pulverized coal feeding machine through the conveying belt assembly, adjusting and screening are conducted according to the pulverized coal with the needed particle size, the pulverized coal with the needed particle size is conveyed according to the working state of the hearth, and the coal particles are fully combusted.

The utility model relates to the technical field of detection and inspection devices, in particular to a coal free expansion degree measuring device which comprises a base, a heating device is arranged on the left side of the top of the base, a feeding device is arranged on the right side of the top of the base, and the heating device comprises a crucible fixedly installed on the left side of the top of the base. A heating block is fixedly mounted at the bottom of an inner cavity of the crucible, a protective cover is arranged in the crucible, a top plate is arranged at the top of the crucible, a placement plate is arranged at the bottom of the top plate, and the feeding device comprises a first mounting plate fixedly mounted on the right side of the top of the base. According to the measuring device for the free expansion degree of the coal, the heating device and the feeding device are installed through the arrangement of the base, coal briquettes are heated through the arrangement of the heating device, the compared coal briquettes are conveyed into the heating device for comparison through the arrangement of the feeding device, and the situation that the feeding of the coal briquettes is influenced by the higher temperature, and the measurement is influenced is avoided.

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.