69 results about "Cement mill" patented technology

The application provides an anti-blocking grate for a cement mill, and relates to the technical field of cement production. The surface of the intermediate ring is fixedly connected with a frame, a plurality of grates arranged at equal intervals in a circle are arranged between the frame and the intermediate ring, a through groove penetrating through the surface of the grate is formed in the surface of the grate, a connecting mechanism is arranged between the grate, the frame and the intermediate ring, an installation groove is formed in the interior of the grate, an anti-blocking mechanism is arranged in the interior of the installation groove, the anti-blocking mechanism comprises rotating rods, the surface of each rotating rod is rotationally connected with the inner wall of the through groove, and two rotating rods are arranged in each through groove. The anti-blocking mechanism is arranged to process the blocked material in the through groove, solves the problem that the material is easily blocked in the through groove in the prior art and affects the filtration of the material, automatically processes the material by using the power generated when the grate rotates, and reduces the processing cost of the material.

The utility model discloses a device for grading and optimizing materials in a cement grinding mill, which relates to the technical field of cement production and processing and comprises a powder concentrator main body, the top of the powder concentrator main body is fixedly communicated with a feed pipe, and one side of the feed pipe is provided with a drying mechanism. The heating frame is fixedly connected with the spiral feeding machine shell, the stirring rod drives materials to rotate and make contact with the heating plate, the materials enter the spiral feeding machine shell after being preheated and are conveyed in the spiral feeding machine shell, the temperature in the spiral feeding machine shell can be adjusted through the heating frame, air flow in the spiral feeding machine shell is accelerated through the fan blades, and therefore the materials can be conveyed to the spiral feeding machine shell. According to the powder concentrator, the materials are dried while being conveyed, the moisture content in the materials is reduced, blockage caused by condensation of moisture in the materials in a low-temperature area in the powder concentrator body is avoided, and normal use of the powder concentrator body is guaranteed.

The utility model relates to the technical field of dust collection devices, in particular to an efficient and energy-saving dust collection device of a cement mill roller press, which comprises a base body, a motor base is arranged on the upper surface of the base body, a motor body is arranged on the upper surface of the motor base, and a shell body is mounted on the outer surface of the motor base. A pipeline connecting piece is arranged on the outer surface of the shell body; and the outlet reducer pipe is mounted on the outer surface of the pipeline connecting piece. According to the utility model, the area of the air inlet of the cyclone dust collector is designed to be smaller than the section of the cylinder surface, so that the tangential speed of the inlet airflow of the dust collector is increased, the dust collecting efficiency is improved, ultrafine powder ground by the roller press is collected by the dust collector, the collected ultrafine powder is conveyed into the finished product air conveying chute through the air conveying chute, and the finished product is conveyed into the finished product air conveying chute through the finished product air conveying chute. And the superfine materials are prevented from circulating in a ball mill system, so that the operation efficiency of the grinding system is improved.

The present invention relates to methods for integrating CO2-mediated mineral carbonation and / or activation in a cement production facility and methods for producing low-carbon-footprint cement, comprising withdrawing at least part of the exhaust gas generated cement production, conditioning it by modifying one or more of temperature, pressure, CO2 concentration and humidity, subjecting an activatable solid feedstock to a size-reduction operation in a size-reduction apparatus distinct from the raw mill and cement mill, and producing low-carbon-footprint cement by mixing the CO2-activated material with the cement wherein mixing is performed feeding the CO2-activated material to the cement mill or a distinct mixing apparatus.

The utility model belongs to the technical field of cement processing, and particularly relates to an equipment heat insulation structure, which comprises a heat resistance component mounted between a cement mill cylinder and a slide shoe bearing, the heat resistance component comprises a support framework fixedly connected to the outer wall of the cement mill cylinder and an annular frame in sliding connection with a support tile, the supporting framework is fixedly connected with the annular frame, the heat resistance assembly effectively blocks transmission of heat of materials in the cement mill barrel by separating the cement mill barrel from the supporting tile from direct contact, and therefore the operation temperature of the sliding shoe is reduced, and the heat resistance assembly is arranged between the cement mill barrel and the sliding shoe bearing, so that the heat resistance of the cement mill barrel is improved. The cement mill cylinder and the supporting tile are separated from direct contact, so that heat of materials in the cement mill cylinder transferred to the sliding shoe can be effectively reduced, the running temperature of the sliding shoe is reduced, the cement mill is prevented from being shut down due to too high temperature, the production problem is effectively solved, and smooth production is guaranteed.

The utility model relates to the technical field of cement production equipment, and provides a surge bin stepped scraper-trough conveyer for a roller press of a cement grinding mill, which comprises a plurality of conveying pipes connected in sequence, and the inner diameters of all the conveying pipes are sequentially reduced from top to bottom; an inclined face is arranged on the side, close to the lower-end conveying pipe, of the conveying pipe and used for guiding materials into the lower-end conveying pipe. The surge bin stepped scraper-trough conveyer for the cement grinding mill roller press aims at reducing the situation that materials are not evenly distributed when entering a stable retention bin.

The utility model provides a cement grinding mill, which relates to the technical field of cement grinding mills and comprises a known grinding mill for grinding cement and a screening box arranged at a discharge port of the grinding mill. The lifting frame comprises two groups of opposite inner side walls which are distributed in an up-down staggered mode, the opposite inner side wall located on the upper portion is rotationally connected with the lower-layer filter plate, the impurity box is arranged below the lower-layer filter plate, therefore, under the condition that the lifting frame does not descend, materials can stay on the surface of the lower-layer filter plate all the time, the staying time of the materials is prolonged, and the service life of the materials is prolonged. The rotating shaft drives the two eccentric wheels to rotate, and the side edges of the eccentric wheels can push the lower-layer filter plate to swing in a reciprocating mode, so that reciprocating sliding of the materials is achieved by controlling the retention time of the materials and utilizing reciprocating swing of the lower-layer filter plate, and qualified materials can be conveniently accelerated to pass through the lower-layer filter plate to be screened and separated.

The utility model provides a feeding pipeline unblocking device of a cement grinding mill, which relates to the technical field of dredging of feeding pipelines of cement grinding mills and comprises a feeding head and a known cement grinding mill feeding port on the cement grinding mill and further comprises a fixing frame fixedly mounted on the outer wall of the feeding head and the outer wall of the cement grinding mill feeding port, the feeding head and the cement grinding mill feeding port are arranged on the same center line, and the fixing frame is fixedly mounted on the cement grinding mill feeding port. The position, away from the feeding head, of the fixing frame is rotationally connected with a rotating cylinder, and the main feeding pipeline and the auxiliary feeding channel are arranged, so that the main feeding pipeline and the auxiliary feeding channel alternately enter the position between the feeding head and a feeding opening of the cement grinding mill through rotation of the rotating cylinder, and raw material conveying is achieved; and the rotated-out main feeding pipeline or the auxiliary feeding channel can be used for scraping attachments on the inner wall by using a scraping rod, so that the internal smoothness is ensured, and the scraping effect can be ensured in a manner of scraping from top to bottom.

The utility model belongs to the technical field of cement grinding mills, and particularly relates to a cement grinding mill partition plate which comprises a plurality of annularly distributed grid plates, grid gaps which are formed in the grid plates and are used for screening out crushed cement and ventilating the interior of a grinding mill, and a central circular plate which is used for connecting the plurality of grid plates, the central circular plate is composed of a plurality of ventilation holes distributed in the central circular plate, and filter screens are fixedly arranged in the ventilation holes and used for intercepting cement and only allowing airflow to pass through so as to dissipate heat in the mill; the intercepting part is spliced with the part, not provided with the grate seam, of the grate plate and used for blocking cement with the particle size larger than the size of the grate seam, heat in the mill is effectively dissipated, and therefore the ventilation efficiency and the heat dissipation performance of the mill are improved, seamless splicing of the intercepting part and the grate plate is achieved, and the heat dissipation performance of the mill is improved. The cement with overlarge particles is effectively prevented from entering the next bin, and the grinding quality and the production efficiency of the cement are ensured.

The utility model discloses auxiliary iron removal equipment for a cement mill, and relates to the technical field of cement mills. The iron removal device comprises an iron removal box, an iron removal assembly is arranged in the iron removal box and comprises a magnetic roller, conical rings are arranged on the front face and the back face of the magnetic roller in a sleeved mode, the sides, away from each other, of the two conical rings are fixedly connected with the inner wall of the iron removal box, and a scraping plate is arranged on the right side of the magnetic roller. And two arc-shaped rods are fixedly connected to the top of the scraping plate, springs are arranged on the outer sides of the two arc-shaped rods in a sleeving mode, and a vertical plate is arranged on the right side of the scraping plate. According to the iron removal device, the scraping plate is arranged, specifically, one end of the left side of the scraping plate can be tightly attached to the surface of the magnetic roller under the elastic action of the spring, so that iron chips attached to the magnetic roller can be scraped by the scraping plate in the rotating process, the iron chips fall to the bottom of the inner wall of the iron removal box, and the magnetic roller can be quickly cleaned; meanwhile, the left side of the scraper clings to the surface of the magnetic roller, so that the cleaning effect can be improved.

The utility model discloses a material distributing device of a roller press of a cement mill. The material distributing device comprises an annular mounting base, the supporting structure is mounted on the upper surface of the annular mounting base, and the supporting structure is used for supporting; the material distribution structure is mounted on the supporting structure, and the material distribution structure is used for material distribution; the utility model relates to the field of material distribution of a cement grinding roller press, the material distribution of a surge bin is changed by changing the position of a movable plate, and the segregation phenomenon is reduced, so that the fluctuation of a roller gap of the roller press is small, the operation is stable, and the production efficiency is improved. And equipment accidents are reduced.

The application relates to the technical field of cement mills, in particular to a high-efficiency cement mill and a use method thereof. The high-efficiency cement mill comprises a base, a cylinder is arranged on the base, a cylinder head is rotationally arranged at the front end of the cylinder, a cylinder tail is fixedly installed at the rear end of the cylinder, a feeding device is arranged on the cylinder head, and a discharging device is arranged on the cylinder tail. Two supports are fixedly installed on the top of the base. The high-efficiency cement mill and the use method thereof have the advantages that the preliminarily ground coarse materials can enter the cylinder through the leakage holes on the inner cylinder, and then the corresponding steel balls are driven to further finely grind by the rotating cylinder. Compared with the simple separation of coarse materials, the inner and outer structures of the inner cylinder in the above-mentioned cylinder can not only separate the coarse materials from the raw materials, so as to save the overall processing time and improve the working efficiency of the cement mill, but also can directly finely process the separated coarse materials, so that the processing efficiency is not affected by the coarse material transfer, and the separation and reprocessing are all carried out in the equipment, so that pollution is not caused.

The utility model belongs to the technical field of cement production equipment, and discloses a cement grinding mill powder selecting device which comprises a fixed base, mounting seats are fixedly mounted on the left side and the right side of the upper surface of the fixed base, a rotating cylinder is rotationally connected between the two mounting seats, a grinding cylinder is fixedly mounted in the rotating cylinder, and a plurality of discharging holes are formed in the outer wall of the grinding cylinder; according to the cement grinding mill powder selecting device, raw materials are placed in the grinding cylinder, the motor works to drive the transmission belt to rotate, the transmission belt drives the rotating cylinder to rotate at a high speed, and in the rotating process of the rotating cylinder, the raw materials are separated from the grinding cylinder, so that the raw materials are separated from the grinding cylinder. And after grinding is completed, powder with the particle size smaller than that of the discharging holes is discharged through the discharging holes, powder with the particle size larger than that of the discharging holes is left in the grinding cylinder to be continuously ground till the particle size reaches the standard, grinding and screening are integrated, and the cement production efficiency is greatly improved.

The utility model relates to the technical field of cement raw material processing, and discloses cement plant desulfurization equipment which comprises a raw material mill, a feed port fixedly connected to the upper end of the raw material mill, a support fixedly connected to the outer surface of the raw material mill, an impeller feeder fixedly connected to the lower end of the raw material mill, and a grinding motor fixedly connected to the upper surface of the raw material mill. The output end of the grinding motor penetrates through the raw material mill and is fixedly connected with a grinding rod, the lower end of the grinding rod is fixedly connected with a grinding hammer, a grinding groove is formed in the raw material mill, the shape of the grinding groove is matched with that of the grinding hammer, a plurality of atomization heads are installed in the raw material mill, and a plurality of auxiliary spray heads are installed in the atomization heads. And the ground raw materials are uniformly humidified by using an atomizing head and an auxiliary spray head, and the spray head is rotated by a dust falling structure so as to ensure uniform humidification. The kiln tail flue gas humidity and dust concentration are improved, the SOadsorption capacity is enhanced, the sulfur fixation efficiency is improved, and SOemission is reduced.

The utility model discloses a cement mill roller press cooling water adjusting device, which relates to the technical field of cement production and comprises a bottom plate, a plate heat exchanger, a support and a pump body are respectively arranged on the bottom plate, a filter box is mounted on the outer wall of the top of the support, and a water inlet pipe and a first connecting pipe are respectively arranged on the filter box. The other end of the first connecting pipe communicates with the plate heat exchanger, and the water inlet end and the water outlet end of the pump body are fixedly connected with a second connecting pipe and a water outlet pipe correspondingly. When the plate type heat exchanger is used, cooling water can be filtered, dirt blocks are prevented from entering the plate type heat exchanger, the using effect of the plate type heat exchanger can be guaranteed, the whole filter plate is very convenient to disassemble and assemble, in the process of disassembling the filter plate, the dirt blocks floating in water can be brought to the outside through the collecting net frame, and the water quality is improved. And the water is prevented from drifting to other positions of the filter box and then entering the plate heat exchanger along with the water flow, and the overall practicability is high.

The utility model relates to the technical field of dust collectors, in particular to a cement grinding mill batching station dust collector capable of preventing material blockage of an air inlet pipeline, which comprises a dust collector body, an air outlet pipe is communicated with the surface of the dust collector body, an air inlet structure is arranged on the surface of the dust collector body, and the air inlet structure comprises an air inlet pipe fixedly connected to the surface of the dust collector body. The other end of the air inlet pipe is communicated with a folding pipe, the other end of the folding pipe is communicated with a mounting pipe, the side wall of the air inlet pipe is fixedly connected with a rotating pin, the side wall of the rotating pin is rotatably connected with a rotating strip, the interior of the rotating strip is fixedly connected with a connecting pin, and the connecting pin is fixedly connected with the surface of the mounting pipe. According to the utility model, the air inlet structure is arranged, so that the flexible bending adjustment work of the air inlet position pipeline is facilitated, the crushing work of impurities is facilitated, and the use requirements of different users on the air inlet position pipe orifice are met.

The utility model relates to the technical field of partition plates, in particular to a cement grinding mill partition plate structure which comprises a supporting circular plate, first screen holes are formed in the supporting circular plate, a plurality of sets of partition strips are fixedly connected to the outer portion of the supporting circular plate, a sector plate is arranged between every two adjacent partition strips, second screen holes are formed in the sector plates, and the first screen holes are communicated with the second screen holes. The fan-shaped plate is installed on the supporting circular plate, a positioning opening is formed in one side of the top of the fan-shaped plate, a positioning groove is formed in the top of the partition strip, a positioning ring is arranged on the positioning opening and the positioning groove, and the positioning ring is detachably and fixedly connected with the supporting circular plate. The position of the fan-shaped plate can be locked, when the fan-shaped plate needs to be replaced and maintained, only the positioning ring needs to be taken down, the fan-shaped plate can be quickly separated, and operation is convenient.

The utility model provides an efficient wear-resistant lining plate for a ball mill of a cement plant, which relates to the technical field of cement manufacturing and comprises a roller mechanism, the roller mechanism comprises an outer cylinder, a sealing plate is arranged in the outer cylinder, and an inlet pipe is arranged on the sealing plate. The butt joint frame between the inner cylinder and the outer cylinder is ensured to be fixed in place, and stable connection between the inner cylinder and the outer cylinder is ensured. The damping buffer is installed in the interlayer between the inner cylinder and the outer cylinder, and it is ensured that the two ends of the damping buffer are fixed between the inner cylinder and the outer cylinder respectively, so that effective buffering and damping are provided, preliminary testing is conducted, and it is ensured that all components are tightly connected and run smoothly. Starting the ball mill, observing the rotation condition of the roller mechanism, ensuring that the damping buffer between the inner cylinder and the outer cylinder works normally, and reducing abrasion and vibration, so that the efficient wear-resistant lining plate of the ball mill in the cement plant can reach the expected wear-resistant effect and performance standard in the using process through the implementation process; and the service life of the ball mill is prolonged.

The utility model discloses a cement mill tail exhaust fan, and particularly relates to the technical field of exhaust fans, the cement mill tail exhaust fan comprises an air inlet pipe, the right end of the outer surface of the air inlet pipe is fixedly connected with a bearing assembly, the inner cavity of the left part of the bearing assembly is slidably connected with a filtering mechanism, and the right side of the outer part of the bearing assembly is fixedly connected with a conveying mechanism; a gas collecting mechanism is fixedly connected into the conveying mechanism, and a cooling mechanism is fixedly connected into the gas collecting mechanism. According to the tail exhaust fan of the cement mill, micro powder and dust contained in gas exhausted by the cement mill can be filtered through the filtering mechanism, the gas collecting mechanism can be fixed through the conveying mechanism, gas conveying can be achieved under the action of the gas collecting mechanism, and the tail exhaust fan of the cement mill is convenient to use. And the cooling mechanism can be used for cooling the gas entering the gas collection mechanism, so that the practicability and universality of the device are improved.

The invention relates to the technical field of control engineering, in particular to an intelligent production scheduling algorithm for a cement grinding mill. The method comprises the following steps: S1, setting target values of the weight of a constant-weight bin and the current of a mill elevator; s2, actual measurement values of the weight of the constant-weight bin and the current of the out-of-mill elevator are obtained in real time through a sensor and monitoring equipment; s3, calculating the deviation between the measured value and the target value through an absolute deviation algorithm, and formulating a feedback control strategy; the accurate deviation data provides powerful decision support for the management layer, and helps to formulate more effective production plans and strategies; s4, the APC optimization technology is used for achieving automatic switching and automatic control of all working conditions; and S5, continuously monitoring the measured values of the weight of the constant-weight bin and the current of the mill elevator, and regularly evaluating and feeding back the effect of the control strategy.

The utility model provides a steel ball screening machine for a cement grinding mill, and relates to the technical field of steel ball screening devices for cement production, the steel ball screening machine comprises a machine body, a ball inlet is formed in the machine body in a communicating mode, a screening mechanism and a spraying mechanism are arranged in the machine body, the spraying mechanism is located above the screening mechanism, and the screening mechanism comprises a shaking assembly and a screening plate; the shaking assembly is located below the ball inlet, the screening plate is fixedly arranged on the side wall of the machine body and located below the discharging end of the shaking assembly, manual screening of the steel balls can be effectively replaced through the screening mechanism and the spraying mechanism, and the screening efficiency of the steel balls is improved; and meanwhile, the spraying mechanism can spray and wash the surfaces of the steel balls in the screening process, cement raw materials on the surfaces of the steel balls are effectively removed, and the labor cost of workers is reduced.

The invention discloses a cement combined grinding and semi-finished grinding system capable of being mutually switched, and relates to the technical field of cement production equipment, the cement combined grinding and semi-finished grinding system comprises a roller press system, a cement grinding system and a material distribution mechanism, the roller press system comprises a roller press, a grinding elevator, a V-shaped powder concentrator and a steady flow bin, the cement grinding mill system comprises a cement grinding mill, an out-of-mill elevator, an OSepa powder concentrator, a 128 dust collector and a first air conveying chute, raw materials are conveyed to the in-mill elevator through a warehouse bottom belt and then conveyed to the V-shaped powder concentrator to be pre-sorted, fine powder enters a double-cyclone cylinder to be collected, and the fine powder is guided to the cement grinding mill in a combined grinding mode or directly conveyed to the OSepa powder concentrator in a semi-finished grinding mode through a material distribution mechanism; and the coarse powder returns to the steady flow bin and is extruded by the roller press until material cakes are formed, and then cyclic sorting is performed again. In the whole process, material path switching is achieved through the material distributing mechanism, and free switching between combined grinding (full-feeding grinding) and semi-final grinding (directly feeding fine powder to a final powder selecting machine) can be achieved without additionally arranging a powder selecting machine.

The utility model discloses a low-resistance cement grinding mill dust collection structure, and relates to the technical field of cement grinding mill dust collection. The upper side of the bottom plate is fixedly connected with a treatment box, one side of the treatment box is fixedly connected with an air inlet pipe, the inside of the treatment box is fixedly connected with an elastic groove plate, the lower side of the elastic groove plate is provided with a plurality of filter cartridges, and the upper side of the bottom plate is fixedly connected with an air storage tank. Through the arrangement of the blowing mechanism, when the filter cartridge is cleaned, the driving motor drives the threaded rod to rotate, so that the threaded sleeve drives the piston plate to ascend, and gas in the gas storage tank is sprayed out through the blowing pipe to blow and clean the inner wall of the filter cartridge, and when the driving motor drives the threaded rod, through transmission of the bevel gear, the inner wall of the filter cartridge is cleaned. And the rubber knocking head is driven to rotate to intermittently knock the elastic groove plate, so that the elastic groove plate and the filter cylinder generate vibration, the cleaning effect on the filter cylinder is further improved, the air passing resistance is reduced, and the dust collection efficiency of the equipment is improved.

The utility model discloses a cement mill feed pipe stirring device which comprises a stock bin and a feed pipe obliquely arranged at the bottom of the stock bin, the upper end of the feed pipe is connected and communicated with the bottom of the stock bin, a flange plate fixedly connected with the feed pipe is arranged on the side wall of the feed pipe in a sleeved mode, and a plurality of bearing seats are arranged on the front end face of the flange plate in the circumferential direction. A rotating shaft is rotationally arranged on each bearing seat, a first gear is coaxially arranged on each rotating shaft, an inner gear is arranged on the feeding pipe in a sleeving manner, inner teeth of the inner gear are in meshing transmission fit with outer teeth of the gears, and one rotating shaft penetrates through the flange plate and is connected with a driving mechanism arranged on the feeding pipe; a first positioning rod fixedly connected with the inner gear is arranged on the outer side of the feeding pipe, an adjusting shaft is arranged in the feeding pipe, a scraper is arranged on the adjusting shaft, and one end of the adjusting shaft extends out of a discharging opening of the feeding pipe and is connected with a second positioning rod through the first positioning rod. The anti-blocking device can effectively solve the problem that the feeding pipe of the cement grinding mill is blocked, and is good in anti-blocking effect.

The utility model provides a liquid cement grinding aid recovery device which comprises a fixed cylinder, a connecting pipe is fixedly connected to the lower surface of the fixed cylinder, a cement mill is arranged on one side of the connecting pipe, a connecting mechanism is arranged between the connecting pipe and the cement mill, and a cylinder cover is rotationally connected to the upper side of the fixed cylinder; and a fixing mechanism is arranged between the cylinder cover and the fixed cylinder. According to the device, the fixed cylinder and the connecting pipe are arranged, so that the grinding aid can be prevented from splashing everywhere only by placing the measuring barrel in the fixed cylinder in the recovery device during calibration, and the pollution to the surrounding environment is greatly reduced. After calibration measurement is completed, the grinding aid can be directly poured into the recovery device through the connecting pipe and then smoothly enters a grinding system to be recycled, waste of resources is avoided, and efficient management and cyclic utilization of the grinding aid are achieved.

The invention discloses a cement mill ultrafine powder control method and system based on system collaborative optimization, and relates to the technical field of intelligent control of cement grinding equipment, and the method comprises the steps: obtaining a first factor influencing the grinding efficiency and a second factor influencing the grinding fineness according to the technological process of processing a target mineral by a cement mill and expert experience; acquiring a third factor influencing power consumption according to the first factor and the second factor; common factors and non-common factors among the first factor, the second factor and the third factor are obtained, and primary control is conducted on superfine powder grinding of the cement mill; and according to the grinding fineness, evaluating the system leakproofness of the cement mill, and according to an evaluation result, performing secondary control on the basis of performing primary control on superfine powder grinding of the cement mill. According to the invention, cooperative control in ultrafine grinding of the cement grinding mill is realized, fineness and energy consumption are both considered, and a technical basis is provided for intelligent improvement of the cement grinding mill.

The utility model discloses a cement grinding mill water spraying system which comprises a bottom plate and a supporting plate, the top of the bottom plate is fixedly connected with a stand column, the supporting plate is fixedly connected with a bearing in an inserted mode, the top end of the stand column fixedly penetrates through the bearing, the top of the supporting plate is provided with a first pipeline, the left side of the first pipeline is provided with a second pipeline, and the bottom end of the second pipeline is fixedly provided with a transverse pipe in a penetrating mode. A plurality of spray heads are fixedly inserted into the bottom of the transverse pipe, a pressing plate is arranged at the top of the supporting plate, a first threaded rod is movably connected to the rear side of the pressing plate, a through hole is formed in the supporting plate, the bottom end of the first threaded rod movably penetrates through the through hole, and two first butterfly nuts are arranged on the edge of the outer side of the first threaded rod in a sleeved mode. According to the device, the first pipeline can be conveniently replaced, meanwhile, first pipelines with different diameters can be installed on the device, and the application range of the device is greatly widened.

The utility model discloses a cement mill discharging grate plate which comprises a mounting plate, the mounting plate is of a circular ring structure, a plurality of grate plates of fan-shaped structures are adjacently mounted on one side of the mounting plate, a plurality of discharging parts are arranged on one side of each grate plate, and a connecting plate of a disc structure is mounted in the center of the mounting plate. The side, close to the discharging part, of the connecting plate is arranged at the center of the grid plate in a covering mode, the outer side of the connecting plate is further evenly and fixedly connected with a plurality of blocking strips, the number of the blocking strips is consistent with that of the grid plates, and the blocking strips are arranged at grid gaps between the adjacent grid plates in a covering mode. By means of the structure, the number of the grate seams is reduced, the risk that the grate seams are blocked is reduced, the grate seams are covered with the barrier strips, sealing of the grate seams is achieved, and cement particles can be effectively prevented from being blocked at the grate seams; and the inclined parts are arranged on the peripheries of the discharging parts, the inclined surfaces enable the grinding bodies to slide more easily under the action of gravity, and the clamping stagnation condition between the adjacent discharging parts due to the gravity and friction force is reduced.

The invention discloses a method for preparing high-strength cement by using a polyol amine raw material. The method comprises the following steps: weighing desulfurization gypsum, cement clinker and a mixed material in a set amount as main materials; preparing a polyhydric alcohol amine raw material solution, and diluting the polyhydric alcohol amine raw material solution to the concentration of 10%-20%; continuously conveying the main material into a cement grinding mill, and continuously and uniformly spraying the diluted solution into the material in the grinding process; wherein the use amount of the diluted solution is 0.01%-0.05% of the total amount of the main materials, and by adopting the spraying mode, it can be ensured that the diluted solution is evenly mixed with a large number of cement main materials; after grinding, feeding a cement finished product into a cement storage tank; stirring equipment is used for stirring and homogenizing treatment, so that tiny difference between batches is further eliminated, and the distribution uniformity of the polyhydric alcohol amine raw materials in the whole warehouse of cement is ensured. By adopting the preparation method, the early strength and durability of a cement product can be improved, special requirements of high-rise buildings, ocean engineering and the like can be met, and meanwhile, the production cost of the cement can be reduced.

The utility model discloses an efficient feeding device of a cement mill roller press, which relates to the technical field of cement mill roller presses and comprises an anti-blocking feeding box, the top of the anti-blocking feeding box is fixedly connected with a feeding channel penetrating through an inner cavity of the anti-blocking feeding box, and the bottom of the anti-blocking feeding box is fixedly connected with a discharging box penetrating through the inner cavity of the anti-blocking feeding box. A first rotating rod and a second rotating rod are movably installed on the right side of the inner wall of the anti-blocking feeding box, the second rotating rod is located on the front side of the first rotating rod, a plurality of stirring plates which are staggered with one another are evenly and fixedly installed on the outer wall of the first rotating rod and the outer wall of the second rotating rod correspondingly, and a driving box is fixedly installed on the left side of the anti-blocking feeding box; the left end of the first rotating rod penetrates into an inner cavity of the driving box and is fixedly provided with a first gear. According to the cement powder feeding device, the first rotating rod, the second rotating rod, the stirring plate, the second servo motor, the reciprocating lead screw, the reciprocating moving plate and the anti-blocking plate are matched with one another, so that cement powder can fall down uniformly during feeding, the blocking problem is prevented, and the discharging efficiency is prevented from being affected.