379 results about "Roller mill" patented technology

The invention relates to a stable ring roller pulverizer which comprises a machine shell, an air guide barrel and a mounting barrel are fixedly arranged in the machine shell in a sleeved mode, and a grinding ring is fixedly connected to the inner side of the mounting barrel; a plurality of material grinding grooves are formed in the inner side of the grinding ring in an inward concave mode, the material grinding mechanism comprises a rotating disc driven by a corresponding driving mechanism, and a plurality of grinding rollers matched with the material grinding grooves of the grinding ring are rotationally installed on the periphery of the rotating disc; the buffering type material distributing mechanism comprises a feeding channel, a discharging port of the feeding channel is right opposite to the center of the rotating disc, a mounting part is mounted below the discharging port of the feeding channel in a lifting manner, a material distributing disc is rotationally mounted on the bottom side of the mounting part, and buffering rubber matched with the output shaft end of the driving mechanism is fixedly connected to the material distributing disc downwards; and the grader comprises a cylindrical filtering grating which is rotationally arranged at the feeding end of the discharging pipe. According to the device, dispersed feeding can be achieved, and the supporting performance of the material grinding mechanism can be enhanced in time when the device vibrates seriously.

The invention discloses a preparation technology of isostatic pressing graphite. The preparation technology comprises the following steps of S1, raw material and ingredient pretreatment, S2, grinding, S3, mixing and kneading, S4, forming, S5, roasting, S6, dipping, S7, graphitization, S8, processing and detection and S9, finished product packaging. A graphite grinding machine used for primary grinding in the step S2 is a vertical roller mill; and a graphite mill used for secondary milling is an airflow mill. The kneading machine in the step S3 is a heating type kneading machine. And in the step S4, the vacuumizing time is 0.5 h, and the vacuum degree is 0 to-0.06 MPa. The roasting furnace in the step S5 is a rotary graphite roasting furnace.

The embodiment of the invention discloses a two-phase corundum crushing system optimization method and device based on a composite granulation process, and belongs to the technical field of control or regulation systems. The operation data of the two-phase corundum crushing system are collected in real time, the current optimal energy consumption and output ratio is calculated based on a multi-objective optimization algorithm, crushing parameters of the two-phase corundum crushing system are adjusted, and an optimization model of the two-phase corundum crushing system is constructed. And solving the multi-objective optimization problem of the optimization model by adopting a non-dominated sorting genetic algorithm in the optimization model, and adjusting the roller mill pressure of the two-phase corundum crushing system according to an optimization strategy generated by the balance scheme. According to the embodiment of the invention, the operation data of the crushing system is collected in real time, and the multi-objective optimization algorithm is combined to realize dynamic adjustment and optimization of the crushing parameters, so that the overall performance of the two-phase corundum crushing system is improved, the energy consumption is reduced, the product quality is improved, and the service life of equipment is prolonged.

The utility model relates to a secondary rolling plug for rolling a seamless tube, which is characterized in that a pipe throwing section, a rounding section, a wall-reducing uniform integrated transformation section, a compression rotating rolling section, a contact biting section and a contact section are sequentially formed on a plug body from right to left; and the outer side surfaces of the pipe throwing section, the rounding section, the wall reduction uniform integrated transformation section, the compression rotating rolling section, the contact biting section and the contact section are all revolution surfaces taking the axis of the plug body as the axis. Through the design of the surface shape of the top body, the surface of a non-ferrous metal tube is not easily scratched, and the technical problems that the roll shape of a conventional three-high rolling mill cannot realize biting rotation, clamping in the rolling process and smooth tube throwing in the non-ferrous metal rolling process are solved; when the plug body outputs lubricating oil, large metal extension and extension coefficients are achieved, the compactness of metal material structures is improved, the problems of multiple inner surface defects and spiral traces in the core rod rolling process are solved, and the quality problems caused by inner pitted surfaces and secondary oxidation in the large extension process are solved through a self-lubricating system.

The invention belongs to the technical field of ultra-lean magnetite crushing and beneficiation, and particularly provides an ultra-lean magnetite final powdering process combining a high-pressure roller mill with two-stage dry separation, which comprises the following specific steps: ultra-fine crushing, screening, first-stage dry magnetic separation and second-stage dry magnetic separation, and the ores return to the high-pressure roller mill to be crushed, the first to fourth steps are repeated, and the waste rocks are directly thrown out. According to the process, the secondary dry type magnetic separation process is added in the follow-up process of the screening process, oversize ore is subjected to secondary dry type magnetic separation and then returns to the high-pressure roller mill, the treatment principle that throwing can be carried out early, throwing can be carried out early, and collecting can be carried out early is achieved, waste rock and part of ore reaching the monomer dissociation degree are separated in advance, and the treatment capacity of the high-pressure roller mill is reduced; therefore, the problem that the treatment effect of the high-pressure roller mill final powder process on the ultra-lean magnetite is poor due to the fact that the disseminated particle size of the magnetite is not uniform is solved.

The invention provides an intelligent forecasting method, device and equipment for working condition indexes of a high-pressure roller mill and a storage medium, and the intelligent forecasting method for the working condition indexes of the high-pressure roller mill comprises the steps: building an operation index dynamic model according to the dynamic characteristics of the working condition of the high-pressure roller mill and the change of the operation indexes, the operation index dynamic model comprises a mechanism model and deep learning; and combining identification errors of parameters of the mechanism model in the operation index dynamic model with non-mechanism model variables in the deep learning model to construct a nonlinear deep learning dynamic system and the like. In order to solve the problem that the working condition indexes of the high-pressure roller mill are difficult to forecast, the intelligent forecasting method for the working condition indexes of the high-pressure roller mill is provided by combining the mechanism model with a deep learning method based on big data, and the forecasting problem of the working condition indexes of the high-pressure roller mill is solved.

The invention belongs to the technical field of coating breeding, and particularly relates to a pretreatment method for iron powder coating breeding. Comprising the following steps: (1) mixing granular urea, calcium superphosphate and potassium chloride to obtain granular fertilizer; (2) dissolving granular fertilizer in water to prepare a granular fertilizer aqueous solution, soaking the rice seeds in the granular fertilizer aqueous solution for 3-5 hours, taking out the rice seeds, spreading the rice seeds in a shade place, and airing the rice seeds for 10-20 minutes to obtain fertilizer-soaked seeds; (3) mixing iron powder, granular fertilizer and bentonite in a powerful mixer for 5-10 minutes to obtain an iron fertilizer mixture, and rolling the iron fertilizer mixture through a high-pressure roller mill to obtain a roller-milled material; the rice seeds are coated with iron powder, so that the dead weight of the seeds is increased, the floating rate and the bird damage loss rate are greatly reduced, and the purpose of direct seeding of the rice seeds can be achieved.

An abnormal-vibration-predicting method for a roll grinder that grinds an outer peripheral surface of a rolling roll with a grinding wheel while the rolling roll rotates includes an acquisition step and a prediction step. The acquisition step acquires a rigidity parameter related to a rigidity of the roll grinder and a wheel rotation parameter related to a rotational speed of the grinding wheel. The prediction step predicts an occurrence of an abnormal vibration in a process of grinding the rolling roll by using the rigidity parameter and the wheel rotation parameter.

The invention discloses a numerical control vertical mill intelligent control system based on parameter self-optimization, and relates to the technical field of industrial grinding, the system collects grinding roller data of a vertical roller mill in real time through an arranged sensor group, and transmits the grinding roller data to the numerical control vertical mill intelligent control system for preprocessing to construct a stress coupling data set and a structure response data set; loading isomerism evaluation is carried out by calculating a loading isomerism index eta load and a loading isomerism boundary threshold T eta, and when loading isomerism exists, a disturbance return trend index beta rb is calculated. The method comprises the following steps: calculating a loading pressure reconstruction index Pyq, carrying out rebound failure risk assessment with a preset first pressure regulation critical threshold TP1 and a preset second pressure regulation critical threshold TP2, generating a regulation instruction according to an assessment result, and if continuous three rounds of regulation do not reach a benefit standard, automatically judging that a mechanical fault occurs and generating an early warning. The system can realize full-process intelligent closed loop of loading heterogeneous state identification, disturbance trend judgment and risk response regulation and control.

A grinding aid for a roller grinder is proposed, which is to be arranged on a flat base and is intended and designed to hold a cutting tool to be machined with the roller grinder in a fixed position and at a predetermined positioning angle relative to this base. The positioning angle of the blade of the cutting tool relative to the support plane is 90°, and the grinding aid has a purely mechanically acting, manually operable clamping device for clamping and holding the blade. This clamping device has a contact surface fixed in the grinding aid, oriented perpendicular to the support plane for applying one side of the blade, and a pressure surface manually displaceable parallel to the support plane and oriented parallel to the contact surface for pressing the other side of the blade.

The utility model relates to the technical field of dry grinding and dry separation of iron ore and similar processes, and particularly discloses a dry grinding and dry separation system which comprises an incoming material conveying system, a roller mill, a dynamic powder concentrator, a dry classification cabin and a fine powder collecting and conveying system. A discharging hole of the supplied material conveying system is communicated with a feeding hole of the roller mill; a discharging hole of the roller mill is communicated with a feeding hole of the dynamic powder concentrator; a coarse particle material outlet of the dynamic powder concentrator is communicated with a material inlet of the dry type grading cabin; an oversize coarse particle discharging opening of the dry type grading cabin is communicated with a feeding opening of the roller mill; and a fine powder discharge hole of the dynamic powder concentrator is communicated with the fine powder collecting and conveying system. Finished product materials with various particle sizes can be provided, and the requirements of customers for different finished product particle sizes are met; fine powder screened by the dynamic powder concentrator is collected by a dust collector and then is directly conveyed to a tailing discarding procedure, so that the handling capacity of the dry classification cabin is reduced; the use condition of the dry-type grading cabin is optimized, and the system flow is simplified.

The invention relates to the technical field of intelligent control, in particular to an intelligent control system of a roller mill, which comprises a real-time abrasion loss detection unit used for acquiring an actual gap value between a grinding roller working surface and a wear-resistant lining plate in the running process of the mill; the wear trend prediction unit is used for predicting current and future wear data according to the actual gap value and the historical wear data; the gap adjustment decision-making unit is used for comparing future gap values and judging whether a gap compensation instruction is triggered or not; the servo execution unit is used for driving the position of the grinding roller in real time according to the clearance compensation instruction; and the closed-loop feedback unit is used for feeding back the actual gap value compensated by the servo execution unit to the wear trend prediction unit so as to update the wear rate. The system is used for automatically compensating the next abrasion condition of the grinding roller and the abrasion-resistant lining plate, and continuous dynamic compensation is achieved.

The invention relates to the field of powder engineering and technology, in particular to a vertical mill millstone particle segregation degree quantification and actual measurement method which comprises the steps that a vertical mill simulation model is established according to physical property parameters of a simulation material, and simulation is conducted; uniformly dividing the simulation area into grids in the radial direction and the axial direction; respectively counting the total mass of the particles in each grid, and calculating the average particle size of the grids and the average particle size of all the particles; calculating radial and axial grid weights according to a mass ratio, and calculating a traditional mass segregation index and a traditional particle size segregation index as well as a radial weighted mass segregation index and an axial weighted particle size segregation index; and partitioning the weighted segregation index, and quantifying the segregation degree. By applying the method, the axial segregation measurement precision can be improved, the radial segregation measurement workload can be reduced, and then the segregation degree of millstone particles can be efficiently and accurately evaluated.

A novel roller grinder, characterized in that the roller grinder comprises a body (1), a rotary grinding wheel fastener (17), and a linear grinding wheel fastener (2), wherein both ends of the body (1) protrude and form a fastening section (18), and wherein a fastening hole extending through the body (1) and the fastening section (18) is provided on the fastening section (18), and wherein one end of the rotary grinding wheel fastener (17) and one end of the linear grinding wheel fastener (2) are each provided in the fastening hole on both sides and are fixedly fastened to a cylinder with a screw (12) and a nut (13), and wherein a linear grinding wheel (4) is provided on an outer side of the linear grinding wheel fastener (2), and wherein a first roller wheel ring (3) is movably provided outside the rotary grinding wheel fastener (17), which rotates synchronously with the body (1).and wherein a rotary grinding wheel (16) is provided on an outer side of the first rolling wheel ring (3).

The invention provides a method for producing alkaline magnesian pellets and the alkaline magnesian pellets. The method comprises the steps that S1, limonite powder and dolomite powder are continuously blended according to a preset proportion to form a pre-blended mixture, and the pre-blended mixture is continuously fed into a dry method vertical roller mill; s2, extruding, shearing and grinding the pre-prepared mixture in a dry-method vertical roller mill, and meanwhile, introducing high-temperature separation flue gas to perform winnowing on the ground material to obtain single mixed powder; s3, directly adding water into the single mixed powder, mixing and pelletizing to obtain green pellets; and S4, the green pellets are fed into a chain grate-rotary kiln system to be roasted, and the alkaline magnesian pellets are obtained. The problems that in the production process of producing the alkaline magnesium pellets from the limonite powder and the dolomite powder, the number of raw material processing procedures is large, energy consumption is high, and mixing is insufficient are effectively solved. And the effects of improving the pellet quality, saving energy, reducing consumption and reducing carbon emission are achieved.

The invention belongs to the technical field of precision machining equipment calibration, and particularly relates to a barreling mill diameter calibration method and a barreling mill.The method comprises the steps that a calibration tool is placed on a feeding trolley of a barreling mill, a measuring device measures the diameter of the calibration tool and generates a current signal, the current signal is transmitted to a control system of the barreling mill, and the control system controls the barreling mill to work; the control system converts the current value into a corresponding current value after receiving the current value; and querying a pre-stored reference table, finding a corresponding crystal bar standard diameter value according to the current current value, obtaining a calibration tool diameter value corresponding to the calibration tool, judging whether the calibration tool diameter value is matched with the crystal bar standard diameter value obtained by looking up the table, and if not, determining that the calibration tool diameter value is matched with the crystal bar standard diameter value obtained by looking up the table. The standard diameter value of the crystal bar corresponding to the current current value is replaced by the diameter value of the calibration tool to obtain an updated reference table, and the pre-stored reference table is replaced by the updated reference table to serve as a new standard for subsequent measurement of the diameter of the crystal bar, so that the diameter of the processed crystal bar is prevented from being suddenly large and suddenly small.

The utility model relates to the technical field of raw material crushing, in particular to a rolling mill coarse material receiving and returning device, which is characterized in that a separating mechanism is arranged at the lower end of a grinding roller, the separating mechanism comprises a coarse material receiving channel and a fine material channel, different materials ground by the grinding roller can be separated, the coarse materials enter the coarse material receiving channel, and the fine materials enter the fine material receiving channel. Fine materials enter the fine material channel, then coarse materials return to the grinding roller through the coarse material return mechanism to be ground again, and the coarse materials which are not completely crushed and depolymerized can be timely taken out and returned before rolling and grinding and then are crushed and depolymerized, so that coarse particles are reduced, the uniformity of the fineness of powder particles is realized, and the quality of post-processed products and the quality of final products are ensured.

The utility model discloses a vertical rolling mill with a position detection function, which belongs to the technical field of rolling mills and comprises limiting grooves which are formed in a first vertical roll supporting frame and a second vertical roll supporting frame and correspond to each other up and down, and a fixed vertical roll assembly and a movable vertical roll assembly are vertically arranged in the limiting grooves respectively. Driving connecting ends are correspondingly arranged at the far ends of the first vertical roller supporting frame and the second vertical roller supporting frame respectively; the movable vertical roller assembly comprises two vertical roller bearing plates which are slidably connected into the limiting grooves and oppositely arranged, and a working vertical roller rotationally connected between the two vertical roller bearing plates. A pull-back oil cylinder and a side pressure motor are respectively arranged at the two driving connecting ends; a position detection mechanism is arranged on the first vertical roll supporting frame or the second vertical roll supporting frame on one side of the limiting groove; the side pressure motor is correspondingly provided with a motor encoder, and the motor encoder and the position detection mechanism are in interlocking control through a PLC logic control module. The utility model has the advantages of long service life, convenience in maintenance, low cost and good safety.

The utility model relates to a power system of a vertical roller mill in the field of vertical roller mills. The power system comprises a main shell, a planetary reducer and a permanent magnet synchronous motor, wherein the planetary reducer and the permanent magnet synchronous motor are arranged in the main shell; the planetary reducer comprises a horizontally-arranged inner gear ring, a planet gear meshed with the inner ring of the inner gear ring, a sun gear meshed with the planet gear and a planet carrier fixed to a planet gear shaft, the planet carrier is connected with an output flange, the sun gear and the inner gear ring are coaxially arranged, and the axis part of the sun gear vertically extends outwards to form a power input end of the sun gear; a motor rotor of the permanent magnet synchronous motor is fixedly connected with a motor output shaft, the motor output shaft is arranged between the motor rotor and the power input end of the sun gear, and the motor output shaft is connected with the power input end of the sun gear and drives the sun gear to rotate horizontally. A multi-stage planetary reducer is optimized into a one-stage planetary reducer, so that the transmission efficiency is higher, and energy conservation and emission reduction are realized; and only one stage of planetary reducer is left in the gear transmission part, the motor rotor is directly connected with the sun gear through the motor output shaft, a traditional coupler is not needed, the size of the whole machine is smaller, and the installation space is saved.

The invention discloses a high-pressure roller mill roller surface wear self-adaptive repair method, and relates to the field of mine crushing, and the method comprises the following steps: S1, wear detection; step S2, performing pretreatment; s3, carrying out gradient restoration; step S4, curing and forming; and S5, performing adaptation verification. By the adoption of the self-adaptive repairing method for roller surface abrasion of the high-pressure roller mill, precise repairing and efficient repairing of roller surface abrasion are achieved, the abrasion resistance of a repairing layer and the binding force of a base body are improved, the service life of the roller surface is prolonged, the repairing cost and the operation and maintenance frequency are reduced, and meanwhile it is ensured that the repaired roller surface is matched with the crushing working condition.

The utility model relates to the technical field of roller mills, and discloses a roller mill for tailing treatment, which comprises a roller mill body, a movable roller is movably mounted in the roller mill body, a fixed roller is rotatably mounted in the roller mill body, a steady flow bin is fixedly mounted at the top of the roller mill body, and a discharge hopper is fixedly mounted at the bottom of the roller mill body. A middle stock bin is fixedly installed at the top of the steady flow bin, a material level detector is fixedly installed in the middle stock bin, two sets of installation plates are symmetrically and fixedly installed at the top of the middle stock bin, a material guiding assembly is arranged between the two sets of installation plates, and a dredging assembly comprising a first dredging tooth frame and a second dredging tooth frame is arranged between the steady flow bin and the middle stock bin. By arranging the dredging assembly, the tailings are prevented from being blocked in the flow stabilizing bin, normal feeding of the tailings is guaranteed, meanwhile, when the tailings are stirred through the dredging tooth frame I and the dredging tooth frame II, the stacked caked tailings can be disturbed and crushed, and the possibility that the tailings are caked is reduced.

The automatic roll gap control system comprises the roller mill and a PLC (Programmable Logic Controller), a steady flow bin is arranged at the top of the roller mill, a level gage for metering the material quantity in the current bin is arranged in the steady flow bin, a material flow adjusting device with an adjustable opening degree is arranged at an inlet of the roller mill at the bottom of the steady flow bin, and the PLC is connected with the material flow adjusting device. The material flow adjusting device is further provided with an opening degree detecting device in a matched mode and further comprises a frequency converter for controlling an extrusion roller motor of the roller mill, and the PLC is electrically connected with all electric devices. According to the utility model, the working roll gap of the roller mill can be manually set, the rotating speed of the motor is automatically changed according to the change of the upstream incoming material quantity, the roll gap is kept stable at a set value, and a user can enable the roller mill to operate at the optimal power consumption roll gap or the maximum yield roll gap according to the production requirements.

The application provides a vertical roller mill with both the grinding roller and the grinding disc being driving members, and a design method thereof. The grinding roller and the grinding disc are driven to rotate by different driving devices, and the grinding roller and the grinding disc are combined in rolling and driven to bite into the material, so that the problem of material accumulation at the front end of the grinding roller and the problem of large vibration of the mill are solved, a plurality of smaller motors and reducers are used to replace the original driving device, and the difficulty of large-scale of the vertical roller mill is solved; the rotating speed of the grinding roller and the grinding disc is adjustable, the adaptability of the vertical roller mill to different materials is improved, and the capacity of the mill is further improved. Moreover, the second reduction device used in the vertical roller mill is a two-stage planetary structure, the transmission efficiency is improved, the torque is ensured to be large, and the structure is more compact. In addition, in the design of the vertical roller mill, multiple parameters such as material characteristics are comprehensively considered, and reasonable design is performed, so that the best grinding efficiency is achieved.

The utility model discloses a waste screening device and a vertical mill ore grinding system in the technical field of ore grinding, which comprises a casing, a mixed waste inlet arranged at the top of the casing, an oversize material outlet and an undersize material outlet respectively arranged at two sides of the bottom of the casing, a jolting screening ramp and a fixed guide ramp arranged in the casing, the jolting screening ramp is composed of a plurality of jolting screen units which are obliquely arranged and vertically spliced in a staggered mode, each jolting screen unit comprises a screen plate, the upper end of each screen plate is hinged to the machine shell, the lower end of each screen plate is connected with a jolting driving device, and the jolting driving devices drive the lower ends of the screen plates to move in a frequency mode to achieve material screening. Not only can the material screening efficiency be improved, but also nails and hard impurities clamped in the screen holes in the screen plate can be shaken out, and the screen holes are prevented from being blocked; the vertical grinding system is additionally provided with the waste screening device, impurities are prevented from being enriched in the system, and it is guaranteed that the vertical roller mill operates stably for a long time.

This invention discloses a beneficiation method for iron, boron, and uranium minerals in uranium-boron iron ore, which has the following characteristics: 1. The three-stage closed-circuit crushing product is laminated and pulverized using a high-pressure roller mill, so that the -5mm particle size content in the crushed product is greater than 70%. By utilizing the technology of multiple crushing and less grinding, the energy consumption of beneficiation can be reduced and the grinding efficiency can be improved; 2. Iron concentrate is obtained by staged grinding and staged magnetic separation. The tailings of iron beneficiation, such as the tailings of coarse magnetic separation, primary magnetic separation, and secondary magnetic separation, are subjected to stepwise gravity separation to obtain uranium concentrate and boron concentrate in stages, thereby improving the recovery rate of B2O3 and U in the boron and uranium concentrates and comprehensively utilizing iron, boron, and uranium resources; 3. The uranium minerals in the iron beneficiation tailings are separated by a combination of Nelson centrifugal concentrator, shaking table, and suspended cone concentrator, thereby improving the U recovery rate in the uranium concentrate. The Nelson centrifugal concentrator can be used for roughing of uranium minerals, the suspended cone concentrator can recover fine-grained uranium minerals, and the shaking table can recover relatively coarse-grained uranium minerals.

The present application relates to vertical roller mill technical field, specifically to a kind of quick turning out rocker arm device, including stand and the upper end of stand is rotatably connected with swing arm, the free end of swing arm is connected with roll shaft arm and roll shaft arm is pitch deflection relative to swing arm;Roll shaft arm is connected with grinding roller assembly and drives grinding roller assembly synchronous pitch, grinding roller assembly is also provided with locking assembly matched with swing arm, locking assembly is used to lock grinding roller assembly with swing arm and keep fixed;The lower of roll shaft arm is also provided with drive assembly, and the drive assembly is used to exert longitudinal deflection force to roll shaft arm.The present application is simplified by the structure of stand, reduces connecting fastener, and is adjusted to roll shaft assembly by the cooperation of swing arm, roll shaft arm, more flexible and convenient, fast and efficient in specific use process.

The invention relates to a preparation method of a pure titanium arc-shaped plate for orthopedic implantation, which comprises the following steps: heating a pure titanium bar blank in an online annealing furnace, controlling the furnace temperature at 600-700 DEG C, and keeping the temperature for 5-10 minutes; then carrying out rough rolling on the pure titanium bar blank by adopting a double-roller mill, wherein the rough rolling process sequentially comprises flat rolling, vertical rolling and profile rolling; a four-roller mill is adopted for conducting finish rolling on a product obtained in the rough rolling process, and an arc-shaped blank is obtained; then the arc-shaped blank is placed in an annealing furnace to be annealed, the annealing temperature ranges from 600 DEG C to 700 DEG C, and the annealing time ranges from 1 h to 2 h; then the annealed arc-shaped blank is straightened; and finally, the straightened arc-shaped blank is subjected to sand blasting and acid pickling, and a pure titanium arc-shaped plate finished product is obtained. The R angle of the pure titanium arc-shaped plate prepared through the method reaches the standard in mold filling, the mechanical property is excellent, the human body implantation requirement can be met, and the surface roughness is low.

The application discloses a kind of to the roller structure of roll mill shaft with circulating cooling circuit, including shaft roller, cooling water input pipe and first end cover, the both ends of roll shaft are equipped with bearing support section, shaft roller is equipped with the cooling cavity that passes through the bearing support section in the end face of one end of shaft roller to the other end of shaft roller, cooling cavity forms cooling cavity opening on the end face of one end of shaft roller, first end cover is sealingly connected on cooling cavity opening, the end face of one end of cooling liquid return cavity is equipped on the end face of first end cover, cooling liquid return cavity is equipped with cooling liquid inlet and cooling liquid outlet, one end of cooling water input pipe is located in the bearing support section of the other end of shaft roller, the other end is sealingly connected together with cooling liquid inlet, cooling liquid return passage is formed between the side wall of cooling water input pipe and cooling liquid return cavity, cooling liquid return passage is connected with cooling cavity and cooling liquid outlet.The application has the advantage that bearing can be cooled, solves the problem that existing sand making machine bearing cannot be fully cooled.

The utility model belongs to the technical field of roller mills, and particularly relates to a ceramic raw material grinding device of a high-pressure roller mill, which comprises a base, a support is mounted at the top of the base, a first casing is fixedly mounted at the top of the support, a second casing is mounted at the top of the support in a pin joint manner, a fixed roller is rotatably mounted on the inner side of the first casing, and a movable roller is rotatably mounted on the inner side of the second casing. A screening device support is installed at the top of the base, a screening box is installed at the top of the screening device support, spring telescopic rods are installed on the inner side of the screening box, the bottom ends of the spring telescopic rods are connected with a screen, a discharging pipe is installed on the side face of the screening box, and a bearing lifting device is connected to the side face of the screening box. According to the device, through the functions of automatically screening the ground materials and automatically recycling the materials of which the particle sizes do not reach the standard, and the function of automatically feeding the materials into the roller mill again for secondary crushing, the crushing efficiency and effect are greatly improved.