33 results about "Powder mill" patented technology

The utility model relates to the technical field of high-pressure flour mills, in particular to a high-pressure flour mill which comprises a high-pressure flour mill main body, a discharge pipe is mounted at the top of the high-pressure pulverizer main body; an access hole is formed in the bottom of the high-pressure pulverizer main body; an air inlet pipe is mounted on the outer wall of the high-pressure pulverizer main body; a feeding hole is formed in the outer wall of the high-pressure pulverizer main body, and a sealing door for sealing the feeding hole is mounted on the outer wall of the high-pressure pulverizer main body in a hinged manner; a connecting lug is fixed to one end of the sealing door, and a clamping hole is formed in one end of the connecting lug. A connecting plate is fixed to the outer wall of the high-pressure pulverizer body, a penetrating hole is formed in the outer wall of the connecting plate, a fixing rod movably penetrates through the penetrating hole, under the action of a sealing door, impurities in the outside can be prevented from entering the high-pressure pulverizer body through a feeding port, on one hand, the working efficiency of the high-pressure pulverizer body is improved, and on the other hand, the practicability is high. And on the other hand, the quality of the powder is improved.

An assembling assembly of a material bin of a powder grinding device comprises a material bin base and the material bin used for storing materials and grinding powder, a bin locking piece which can rotate relative to the material bin and is provided with a first locking position is arranged on the material bin, and a base locking piece with a second locking position and a transmission piece used for driving the bin locking piece to rotate are arranged on the material bin base. When the stock bin and the stock bin base are installed, the stock bin and the bin locking piece move forwards towards the stock bin base, the first locking position passes through the second locking position from the outer side of the second locking position, then the bin locking piece makes contact with the transmission piece and drives the bin locking piece to rotate, the first locking position corresponds to the second locking position, and after the bin locking piece returns backwards, the first locking position and the second locking position are locked and matched. When the stock bin and the stock bin base are detached, the stock bin and the bin locking piece move in the forward direction, the first locking position is made to be away from the second locking position, then the bin locking piece makes contact with the transmission piece and drives the bin locking piece to rotate, the first locking position and the second locking position are made to be staggered, and the stock bin can be detached from the stock bin base in the reverse direction. The invention further discloses a powder mill with the assembling assembly of the powder mill stock bin.

The utility model relates to the technical field of plastic processing equipment, and discloses a screening device for a plastic pulverizer, which comprises a machine body, one side of the top of the machine body is fixedly connected with a spring, the top of the spring is fixedly connected with a screening box, and the bottom of the machine body is fixedly provided with a first motor. The output end of the first motor is fixedly connected with a driving shaft, one end of the driving shaft is fixedly connected with a sweeping plate, the bottom of the sweeping plate is fixedly connected with a sweeping brush, the interior of the screening box is fixedly connected with a circular plate, a discharging hole is formed in the circular plate, and the inner wall of the machine body is fixedly connected with a discharging hopper. Compared with the prior art, the plastic powder screening device has the following advantages and effects that the vibration machine drives the screening box and the circular plate to generate exciting force, then the movement frequency of plastic powder is increased, the plastic powder screening device can screen the plastic powder, the plastic powder screening efficiency can be improved, and the screening effect is extremely good.

1. Name of the designed product: Blender (Multifunctional powder mill) 2. Use of the designed product: Blender for processing or cooking food. 3. Design points of the designed product: In shape. 4. Picture or photo best indicating the design points: Perspective view 1.

The utility model provides water-cooled metal pulverizing equipment, which belongs to the technical field of metal pulverizing equipment and comprises a chip cutting machine, an air inlet of the chip cutting machine is sequentially connected with a first fan and a first heat exchanger through pipelines, and an outlet of the chip cutting machine is sequentially connected with a second fan, a second heat exchanger, a chip breaker, a third fan, a third heat exchanger and a material collector through pipelines. A discharging port of the material collector is connected with a pulverizing system through a pipeline, the pulverizing system comprises a pulverizing machine, an air inlet of the pulverizing machine is connected with a feeding heat exchanger through a pipeline, and a discharging port of the pulverizing machine is sequentially connected with a discharging fan, a discharging heat exchanger and a discharging collector through pipelines; a discharging opening of the material collector is fixedly connected with a feeding opening of the flour mill through a pipeline; according to the scheme, the material treatment process is optimized, the requirement for high-quality metal powder in the production process is met by refining the materials step by step, the temperature in the production process is effectively controlled, and the problems of material performance change and equipment overheating are solved.

The invention provides a system and method for preparing silicon carbide through joule flash evaporation of an ex-service wind power blade, the system comprises a cutting device, a conveying device, a crushing device, a powder making machine and a joule flash evaporation device which are arranged in sequence, the cutting device is used for cutting the ex-service wind power blade into blade cutting pieces, and the input end of the conveying device is close to the cutting device; the output end of the conveying device is close to the crushing device, the crushing device is used for crushing the blade cutting piece into blade particles and removing impurities through magnetic attraction, the powder making machine is used for grinding the blade particles into blade powder, and the Joule flash evaporation device is used for preparing the blade powder into silicon carbide. According to the system, rich key components of carbon-based materials such as carbon fiber complexes and resin matrixes and silicon-based materials such as glass fibers in the retired wind power blades can be converted into silicon carbide materials, the whole process is extremely low in energy consumption, short in reaction time, high in treatment efficiency and free of secondary pollution, and the resource utilization rate is increased.

The utility model discloses an air inlet device for a Raymond mill. The air inlet device for the Raymond flour mill comprises a flour milling device and an air inlet pipeline, the flour milling device is communicated with the air inlet pipeline, the air inlet pipeline comprises a ventilation cavity and a cover plate, an annular groove is formed in the ventilation cavity, the center of the annular groove is communicated, an adjusting assembly is further installed in the air inlet pipeline, and the adjusting assembly is connected with the cover plate. The adjusting assembly comprises a rotating disc installed in an annular groove formed in the ventilation cavity, an adjusting plate is welded to the upper end of the rotating disc, partition plates are symmetrically arranged at the two ends of the adjusting plate, and a motor spindle is further installed at the lower end of the rotating disc. Through the arranged adjusting assembly and the adjusting assembly driven by the motor main shaft, the angle of the partition plate can be accurately controlled according to the actual production requirement, so that the gas flow is accurately adjusted, the Raymond mill can provide the most appropriate gas flow condition under different materials and different milling requirements, and the milling fineness and quality are better.

The utility model discloses a kind of powder mill for concrete production, including air supply device, the top of air supply device is fixedly connected with powder mill box, the left side of powder mill box is communicated with feeding pipe, the top of feeding pipe is fixedly connected with millstone box, the front side of millstone box is fixedly connected with driving device, the inner chamber of driving device is fixedly connected with millstone roller, the top of millstone box is communicated with feed pipe, the top of powder mill box is fixedly connected with empty pipe, the right side of empty pipe surface is communicated with powder feeding pipe, the top of empty pipe is fixedly connected with driving motor, the output of driving motor is fixedly connected with rotary ring, the bottom of rotary ring is fixedly connected with compression ring. The utility model is driven by the driving device set, millstone roller can be driven to rotate, two millstone rollers grind the incoming raw material again, so as to reduce the particle size of raw material, small particle size raw material is easier to grind and process, so as to improve the processing efficiency of powder mill box.

The utility model relates to a calcium hydroxide powder mill which comprises a fixed millstone, a movable millstone, a material collecting cover and a speed reducing motor, an electric heating wire is installed in the fixed millstone, a feeding hole is formed in the center of the fixed millstone, and the front end of the fixed millstone is fixedly connected with a feeding cylinder communicated with the feeding hole; an auger extending into the feeding hole and the feeding cylinder is mounted in the center of the front end of the movable grinding disc; the material collecting cover is mounted on the fixed millstone, and the movable millstone is covered in the material collecting cover; a power output shaft of the gear motor is connected with a rotating shaft in the rear end center of the movable millstone. The device has the beneficial effects that the electric heating wire is mounted in the fixed millstone to heat the fixed millstone, so that the space among the fixed millstone, the movable millstone and the material collecting cover is heated, and calcium hydroxide is prevented from being affected with damp and adhering to the fixed millstone, the movable millstone and the material collecting cover; the gear motor drives the movable millstone to rotate, the auger is driven to rotate in the feeding cylinder, and calcium hydroxide raw materials in the feeding cylinder are fed between the fixed millstone and the movable millstone at a uniform speed to be ground.

The utility model relates to the technical field of flour mills, and provides an efficient coating flour mill which comprises a smashing box, a flour milling box, a flour milling roller, a filtering box, a cleaning scraping plate, a smashing cutter, a synchronous driving assembly and a cleaning wind head, the top end of the flour milling box is communicated with a feeding hopper so that coating can enter the flour milling box conveniently, and the bottom end of the smashing box is communicated with a discharging pipe. A valve is arranged on the discharging pipe, the grinding box is connected to the top end of the smashing box in a penetrating mode, the two grinding rollers are rotationally installed in the grinding box through the grinding assembly, the filtering box is arranged in the smashing box through the moving assembly in a reciprocating motion mode, and a plurality of filtering net openings are formed in the filtering box. The multiple cleaning scraping plates are rotationally installed in the filtering box, the multiple smashing cutters are arranged on the upper sides of the multiple cleaning scraping plates, and the multiple cleaning scraping plates are fixedly connected with connecting strips. By means of the technical scheme, the problem that in the prior art, the grinding efficiency of the caked powder coating is low is solved.

The utility model relates to the technical field of carclazyte processing, and belongs to a flour mill for grinding carclazyte. Comprising a grinding box and a base support used for supporting the grinding box, the base support is connected to the bottom of the grinding box, a feeding hopper is arranged on the grinding box, a coarse grinding cavity is connected to the tail end of the feeding hopper, a coarse grinding mechanism is arranged in the coarse grinding cavity, the coarse grinding mechanism comprises a screening disc, and a fine grinding cavity is formed in the lower portion of the screening disc; a fine grinding mechanism is arranged in the fine grinding cavity, and a discharging port is formed in the bottom of the grinding box. The coarse grinding mechanism and the fine grinding mechanism are arranged in a grading mode, large-size carclazyte cakes can be screened through the screening disc to be preliminarily crushed and ground, then small-size carclazyte is finely ground through the fine grinding mechanism, the uniformity of the carclazyte particles is improved, and the particle size distribution of the carclazyte particles is more uniform; and when the coarse grinding mechanism crushes and grinds the carclazyte raw materials, elastic grinding of the coarse grinding roller can be achieved, the coarse grinding mechanism is protected, and the stability of the device is improved.

The application discloses a high-uniformity coal mill for ceramic tile processing, and relates to the technical field of ceramic tile processing.The high-uniformity coal mill for ceramic tile processing comprises a powder mill and a collection rod, one side of the powder mill is provided with an inlet, and the other side of the powder mill is provided with a transfer inlet frame, an inner groove is formed in the transfer inlet frame, and an adjusting assembly for shielding the inner groove is arranged in the inner groove.The ceramic tile raw material after the initial grinding is discharged from the discharging area on one side of the powder mill into the transfer inlet frame, the filter screen arranged in the transfer inlet frame is used for screening the ceramic tile raw material after the initial grinding, and the uniform grinding of the ceramic tile raw material by the powder mill is ensured, the air flow rate around the motor is improved by the design of the heat dissipation assembly to assist the heat dissipation of the motor, and the heat dissipation of the motor is started along with the operation of the motor, and the heat dissipation of the motor has a following effect.

The utility model relates to the technical field of zinc slag impurity removal and recovery, in particular to a zinc slag and zinc particle grinding, impurity removal and recovery device which comprises a hopper assembly, a feeding assembly, bolts, a sorting box, a spiral conveyor, an induced draft fan, a bag collector and a grinding machine. The device comprises a motor, the tail end of an output shaft of the motor is fixedly connected with a connecting shaft rod, the outer side of the connecting shaft rod is fixedly connected with a mounting roller, and the outer side of the mounting roller is sleeved with two magnets arranged in an arc shape. The output shaft of the motor can drive the connecting shaft rod, the mounting roller and the magnet to rotate, the magnet can remove scrap iron in zinc dross and zinc particles, the rotating arc-shaped magnet can increase the contact area with the scrap iron in the zinc dross, and the problem that the scrap iron removing efficiency of the zinc dross and zinc particle grinding, impurity removing and recycling device is low is solved.

The invention relates to the field of flour mills, in particular to an impact type flour mill for grain processing, and solves the problems that impact cutting angles are the same, abrasion is large and long-term efficient flour milling is not facilitated due to the fact that impact components rotating at a high speed in an existing impact type flour mill for grain processing cannot be adjusted. The grinding machine comprises a base, a driving motor, a barrel cover, a mounting disc, a rotating shaft barrel, a grinding fluted disc, an I-shaped disc, a screen barrel, a short hammer head, a rotating frame, a connecting frame, a long hammer head, clamping frames, a driving assembly, a sliding plate frame, a first steel wire brush, an extension assembly, a frame, a circular ring and a steel wire brush ring, the rotating shaft barrel is further provided with a linkage assembly, and the linkage assembly is used for driving the rotating shaft barrel to slide in the clamping frames when the linkage assembly is driven to slide in the clamping frames. The circular ring can be driven to axially slide along the grinding barrel. The device can flexibly adjust the angle of impacting a grinding part, improves the grinding efficiency and effect, can reduce abrasion, and can discharge materials in time and operate stably.

The utility model relates to the technical field of powder mills, in particular to a powder mill which comprises a supporting frame, a connecting frame, a grinding assembly, a collecting frame a, a guiding assembly, a cleaning assembly and a collecting frame b. The connecting frame is mounted on the supporting frame; the grinding assembly is installed on the supporting frame and connected with the connecting frame. The collecting frame a is mounted below the grinding assembly; the guiding assembly is installed on the supporting frame. The cleaning assembly is mounted on the grinding assembly; the cleaning assembly comprises a mounting cover, the mounting cover is provided with a handle and a bearing seat, the bearing seat is rotationally connected with a shaft rod, the shaft rod is provided with a supporting block through a mounting hole, the supporting block is provided with a mounting sleeve, the mounting sleeve is provided with a scraper, and a sliding block is mounted below the mounting cover. And the collecting frame b is mounted below the cleaning assembly. Material waste can be reduced conveniently, meanwhile, the mounting cover and the sliding block are mounted, the sliding block moves along the inner wall of the guide rail synchronously with the mounting cover, moving stability is improved conveniently, and the grinding roller cleaning effect is improved.

The present invention discloses a coupled desulfurization and denitrification process for deep utilization of flue gas waste heat from a blast furnace hot blast stove. During the hot blast stove's combustion period, air and coal gas enter the hot blast stove's combustion chamber and are mixed and burned. The resulting high-temperature flue gas is heated in a heat storage chamber and then led out of the hot blast stove flue gas duct through an air-to-flue gas switching chamber. Part of the post-furnace flue gas led out of the hot blast stove flue gas duct is passed through an air heat exchanger, a gas heat exchanger, and a blast furnace coal pulverizing system to recover some of the waste heat. The flue gas, along with the remaining post-furnace flue gas, enters the micro-powder mill of a metallurgical slag micro-powder system, where it dries and aids in grinding the metallurgical slag. The slag is then desulfurized and denitrified by chemical absorption of alkaline earth metal oxides in the metallurgical slag micro-powder and adsorption by the metallurgical slag micro-powder. The flue gas then enters the micro-powder bag filter of the metallurgical slag micro-powder system for dust removal before being discharged. The present invention has low investment and operating costs, is environmentally friendly, energy-saving, and consumption-reducing, can effectively recover low-temperature flue gas waste heat, and simultaneously achieves in-situ flue gas desulfurization, denitrification, and carbon dioxide removal.

The utility model relates to the field of flour mill millstones for plastic processing, in particular to a flour mill millstone for plastic processing, which comprises a first flour mill millstone main body, a second flour mill millstone main body is symmetrically arranged on one side of the first flour mill millstone main body, and the first flour mill millstone main body comprises a mounting disc body. A plurality of grinding mechanisms are evenly installed on the arc outer wall of the installation disc body, a rotating shaft is arranged in the middle of the circular side wall of one side of the installation disc body, and the grinding mechanisms, used for grinding plastic, of the first pulverizer grinding disc body are designed to be separated from the installation disc body, so that when the grinding mechanisms are abraded, only limiting discs need to be detached, and then the grinding mechanisms can be fixed. When the grinding mechanism is replaced, the grinding mechanism can be independently replaced, then a new grinding mechanism is mounted on the original mounting disc body, and the limiting disc can effectively prevent the grinding mechanism from falling off, so that when the grinding mechanism of the grinding disc for grinding plastic is replaced, only the grinding mechanism needs to be independently replaced, and the whole grinding disc does not need to be replaced; therefore, the cost can be effectively reduced.

The utility model discloses a cement processing mill powder concentrator anti-adhesion device which comprises a cement mill powder concentrator body, one side of the top face of the cement mill powder concentrator body is communicated with the bottom end of a feeding pipe, the top end of the feeding pipe is communicated with a grinding box, and one side of the grinding box is fixedly provided with a smashing box. A positioning block is fixedly installed on the inner wall of the grinding box, a bearing frame is fixedly installed on the top face of the grinding box, a grinding shaft is installed on the bearing frame, the output end of a servo motor is connected to the top end of the grinding shaft, a grinding block is connected to the bottom end of the grinding shaft, and a smashing shaft is installed in the center of the smashing box. The cement grinding mill powder concentrator has the beneficial effects that the crushing box and the grinding box are arranged, so that the crushing of large agglomerated materials and the grinding of small agglomerated materials can be automatically realized, repeated feeding by workers is not needed, the ground materials can be filtered, secondary adhesion materials are prevented from entering the cement grinding mill powder concentrator body, the adhesion prevention effect is better, and the practicability is higher.

The utility model discloses a concrete processing pulverizer, and relates to the technical field of concrete processing, in particular to a concrete processing pulverizer which comprises a pulverizing box, a feeding barrel is arranged on the top of the pulverizing box, a controller is arranged on the front side of the pulverizing box, a first protection box is arranged on the right side of the pulverizing box, and a first motor is arranged in the first protection box. A first smashing roller is arranged at the output end of the first motor, the outer surface, close to the first motor, of the first smashing roller is sleeved with a first gear, a second motor is arranged in the first protection box, and a first grinding roller is arranged at the output end of the second motor. According to the concrete processing pulverizer, through the arrangement of the pulverizing box, the controller, the first motor, the first pulverizing roller, the first gear, the second gear, the second pulverizing roller, the second motor, the third gear, the first grinding roller, the fourth gear and the second grinding roller, the concrete processing pulverizer has the effect of enhancing efficient pulverizing of concrete.

A weighing device for a powder mill comprises a rotary screen device, a discharging device, a feeding device, a finished product discharging device, a finished product box and an overall weighing device, and a pneumatic butterfly valve is arranged in a primary discharging pipe of the discharging device; the feeding device comprises a transverse material passing pipe, a weighing assembly, a material pushing assembly, a material containing assembly and a longitudinal discharging pipe, a lifting table and a supporting table are further arranged in the transverse material passing pipe, the weighing assembly is embedded in the lifting table, the material containing assembly is hinged to the telescopic end of the material pushing assembly, the material containing assembly is matched with the supporting table, and the longitudinal discharging pipe is arranged on the supporting table. Under the condition that the material containing assembly is separated from the supporting table, the material containing assembly rotates in the preset direction, and the material pushing assembly drives the material containing assembly to stretch out and retract back; and the finished product box corresponds to the finished product discharging device, so that the weighing error is effectively avoided in the weighing process of the finished powder coating in the powder coating crushing process, and meanwhile, the working efficiency is also improved.

The equipment comprises a waste carpet regeneration workshop, and the waste carpet regeneration workshop is sequentially provided with a metal detector, a velvet cutting machine, a vacuum suction device, a material storage tank, a short velvet conveying and stirring cage, a cleaning and drying line, a vacuum suction device, a material storage tank, a short velvet conveying and stirring cage and a pelletizer. The device comprises a mechanical arm, a bottom back conveying belt, a pre-opening shredder, a shredded material conveying belt, a crusher, a conveying stirring cage, a coarse powder machine, a spiral separator, a fine powder machine, a spiral separator and a multi-layer-mesh vibrating screen. According to the invention, waste carpets are subjected to fluff cutting by the fluff cutting machine, short fluff is sucked into the storage tank for storage by the vacuum suction device, the short fluff is conveyed to the cleaning and drying line by the stranding cage at the bottom of the tank, the cleaned short fluff is squeezed by the high-pressure water through the compression roller and enters the drying oven for drying, and the dried short fluff is sucked into the outdoor storage tank by the vacuum suction device. And a stranding cage at the bottom of the storage tank conveys the short fibers to a granulator for granulation. The mechanical arm continuously places the bottom and back subjected to fluff cutting on the conveying belt to the shredding machine to be shredded, coarse powder separation is conducted, fine powder separation is conducted, and colloidal calcium powder separated out through the vibrating screen replaces a new raw material to manufacture carpets.

According to the preparation method of the high-activity lead powder for the lead-acid storage battery, a lead powder machine is adopted, the lead powder machine comprises a roller, a powder collecting bin and a negative pressure fan, a horizontally-arranged air inlet pipe extends into the roller, and branch air inlet pipes are sequentially arranged on the air inlet pipe at certain intervals in the axial direction. BiO is added in the lead powder preparation process, so that the oxidation rate is increased, meanwhile, softening and falling of positive active materials are inhibited, and the cycle life performance is improved. The angle of the positive air pressure air inlet pipe and the pipe diameter and length design of the nozzle are optimized, and the oxidation speed and dust raising capacity of lead particles in the roller are improved. And due to the bent pipe separation design, fine lead powder can be better separated out. The lead powder production grinding efficiency is improved, the high-specific-surface-area lead powder is produced, the activity of the lead powder is improved, the initial capacity and low-temperature performance of a battery are improved, and the service life of the battery produced by using the lead powder is long.

The application discloses a plant source pesticide raw material industrialized continuous low-carbon production system and process, which comprises parallel A and B production lines, the A and B production lines comprise, through conveyors, a cleaning machine, a chopping machine, a pre-cooling heat exchange device, a freezing wall-breaking device, a slow recovery heat exchange device, a first pressing device, a humidifying and stirring device and a second pressing device in sequence; the pre-cooling heat exchange device of the A production line and the slow recovery heat exchange device of the B production line, and the slow recovery heat exchange device of the A production line and the pre-cooling heat exchange device of the B production line are respectively connected with cold and hot convection air pipes to realize cold and hot air convection; the second pressing device of the A and B production lines is further connected with a solid material drying device and a wall-breaking powder mill through conveyors in sequence; and the liquid material outlets of the first pressing device and the second pressing device of the A and B production lines are connected with an ultrafiltration device, a macromolecule filtration and concentration device and a raw material tank through pipelines in sequence. The application effectively retains effective components in plants and realizes low-carbon continuous production.

The utility model discloses a coating flour mill capable of accelerating powder sliding, which relates to the technical field of coating flour mills, and comprises a blanking box, a box door and a flour mill main body, the outer side of the blanking box is movably connected with the box door, the bottom end of the blanking box is connected with a discharge pipe, the outer side of the discharge pipe is provided with a material valve, the top end of the blanking box is connected with the flour mill main body, and the flour mill main body is connected with the box door. And a feeding hole is formed in the top end of the flour mill main body. Solid powder falls into the flour mill main body from the material inlet, the control panel is used for controlling the driving motor to work and driving the driving shaft to rotate, and further, under the mutual meshing action of the main fluted disc, the fluted disc II and the fluted disc I, the bearing shaft and the supporting shaft can synchronously rotate, so that the three flour milling rollers cooperate in the flour milling cavity, and the flour milling efficiency is improved. A complex grinding track is formed, solid powder is subjected to the comprehensive action of multiple gravity such as extrusion, shearing and friction between the rollers, and efficient shearing and extrusion are achieved.

The utility model provides a pulverizer for powder coating production. The pulverizer comprises a rack, a grinding cylinder, a rotating base, a motor I, a motor II, a driving shaft, a connecting rod, a main grinding roller and a secondary grinding roller, the grinding cylinder is mounted on the rack, a rotating base is rotationally mounted at the bottom in the grinding cylinder, and the rotating base is in transmission connection with a motor I mounted on the rack; the driving shaft is positioned in the grinding cylinder, and the upper end is rotationally mounted at the top of the grinding cylinder through a bearing and is in transmission connection with a motor II mounted at the top of the grinding cylinder; the connecting rods are evenly connected to the lower portion of the side wall of the driving shaft, the main grinding rollers are rotationally installed on the connecting rods, and the auxiliary grinding rollers are rotationally installed on installation rods arranged on the connecting rods. The motor I and the motor II respectively drive the rotating chassis and the driving shaft to rotate relatively to grind and crush fragments, and through rolling fit of the main grinding roller and the secondary grinding rollers, the grinding and crushing positions of the fragments are increased, and the grinding efficiency of the powder coating fragments is improved.

The invention relates to the technical field of cement manufacturing facilities, and particularly discloses a powder selecting device of an efficient cement pulverizer. An outlet is formed in the lower end of the pulverizer, a coarse filter plate is arranged above the outlet, an arc-shaped barrel is arranged at the outlet, a rotating roller is installed in the arc-shaped barrel, a plurality of grooves are formed in the rotating roller, a discharging opening is formed in the lower end of the arc-shaped barrel, the discharging opening is located above a conveying belt, and a dispersing device is arranged between the conveying belt and the discharging opening. The tail end of the conveying belt is located above the lower end of the elevator, the upper end of the elevator is located above the trough, and the trough is connected with the pulverizer; a material distributing hopper and a plurality of linked elliptical rollers are arranged in the annular interior of the conveying belt; a collecting device is arranged below the distributing hopper; and material leaking holes are formed in the conveying belt. The dispersing device has the effects of dispersing cement, avoiding accumulation and facilitating separation. And the cement collecting speed and efficiency can be increased, and the cement collecting success rate is increased.

The utility model provides a flour mill with controllable powder specification, which relates to the technical field of flour mills and comprises a support, a flour milling box is fixedly mounted on the surface of the support, a feed port is fixedly mounted on the flour milling box, a flour milling motor is fixedly mounted on the side face of the flour milling box, and the output end of the flour milling motor is fixedly connected with a driving gear. According to the grinding device disclosed by the utility model, through the grinding box, the feeding hole, the grinding motor, the driving gear, the fixed grinding roller, the first constraint plate, the second constraint plate, the first transmission gear, the second transmission gear, the driven gear and the movable rotating shaft, the movable grinding roller can move while rotation is not influenced, so that the distance between the fixed grinding roller and the movable grinding roller is changed; the powder discharging efficiency is improved by adding the multiple powder grinding boxes, powder which does not meet the standard is screened out by changing the pore positions of the fixed filter plate and the movable filter plate, and finally the operation of changing the specification of the discharged powder finished product is achieved.

The utility model relates to the technical field of biopharmacy, and discloses a hammer type pulverizing machine, which comprises a bottom plate, a vertical column for supporting is arranged at the top of the bottom plate; a connecting ring used for fixing is arranged at one end of the stand column, the powder grinding barrel is fixedly connected into the connecting ring, the powder grinding barrel is of a hollow structure, a filtering plate used for filtering is arranged in the powder grinding barrel, and a plurality of filtering holes arranged circumferentially are formed in the filtering plate; the powdering assembly is arranged at the top position of the stand column; and a partition plate. According to the device, through the arranged partition plate, the filtering holes can be shielded during hammering, raw materials are prevented from being hammered into the filtering holes and blocking the filtering holes, the raw materials blocking the filtering holes can be dredged through the dredging rod, the filtering holes are further prevented from being blocked, and discharging is further prevented from being affected; and discharging is carried out through the through holes and the filtering holes located on the same axis.

This invention belongs to the field of anti-corrosion powder coating technology, and discloses a low-magnetic modified ultrafine silica powder, its preparation method, and its application. This invention provides a low-magnetic modified ultrafine silica powder, using the dust removal byproduct of 325-mesh silica powder milled by ceramic ball milling as the raw material for the ultrafine powder. Utilizing its advantages of low magnetic content, wide particle size distribution, and low oil absorption, after composite surface modification, its compatibility with resin and flowability are improved, resulting in an ultrafine silica powder with low magnetic content, low oil absorption, and good flowability, which can meet the performance requirements of high-end heavy-duty anti-corrosion powder coatings.

The utility model relates to the technical field of grinding processing, in particular to a grinding machine, which improves the convenience of direct grinding processing of large timber, improves the working efficiency, reduces high-temperature faults and improves the use reliability. Comprising a case and a discharging pipe, the discharging pipe communicates with the lower portion of the outer side wall of the case, and an opening is formed in the front end of the case; the screening device is arranged on the inner side wall of the machine box and used for screening powder, the sealing door is arranged at an opening of the machine box and provided with a feeding port, the rotating shaft is rotationally installed on the inner side wall of the machine box, and the supporting wheel is arranged on the rotating shaft; the supporting wheel is installed on the outer side wall of the rotating shaft, the first cutters are installed on the front side and the rear side of the outer side wall of the supporting wheel, the second cutters are installed on the inner side wall of the sealing door, the first cutters are matched with the second cutters in position, and the machine box is installed on the driving device.