CN215612029U

CN215612029U - Turbine flour mill

Info

Publication number: CN215612029U
Application number: CN202121479560.1U
Authority: CN
Inventors: 武思军
Original assignee: Wu Sijun
Current assignee: Wu Sijun
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-01-25
Anticipated expiration: 2031-06-22

Abstract

The utility model discloses a turbine pulverizer, and relates to ore grinding equipment. In order to solve the problems of extremely low grinding efficiency and great energy consumption of the existing ore grinding machine, the high-speed rolling mill is applied to roll and press ores so as to crush the ores: the technical principle is as follows: the grinding roller is driven by a plurality of driving shafts on the turbine disc, the grinding roller rolls at a high speed along the inner wall of the grinding ring, ores are crushed under the high-speed rolling of the grinding roller, and fine particles after crushing are taken away by wind power generated by the turbine, so that the waste of electric energy caused by repeated pressing and grinding is avoided.

Description

Turbine flour mill

Technical Field

The utility model relates to ore grinding equipment, in particular to a pulverizer for grinding ores by utilizing centrifugal pressure generated by a turbine rotating grinding roller, which is mainly applied to fine grinding and superfine grinding of various ore powder bodies and can also be applied to flour processing of grains.

Background

The mining quantity of various ores such as coal mines, iron mines, cement and the like in China is dozens of billions of tons every year, most of the ores can be reasonably sorted and applied by fine grinding, the grinding efficiency of the existing various mills is extremely low, the energy consumption is extremely high, according to data analysis, the grinding efficiency of the mills is only about one percent, most of electric energy is consumed as heat energy, and the ball mill is most popularized in the existing ore grinding equipment. The ore grinding equipment consumes more than eighty percent of the ore, the electricity consumption of the ore grinding equipment such as the ball mill and the like is as high as five million degrees every year, the electricity consumption of the ore grinding equipment accounts for more than 4 percent of the total electricity of China every year, and the electricity consumption of hundreds of millions of degrees of the ore grinding equipment is consumed on ore grinding every year. The existing ore grinding machine has a plurality of defects and problems, the large-scale ore grinding machine has the weight of more than one hundred tons, is large in size, needs special infrastructure installation for placement, is quick in grinding piece damage, needs frequent overhaul, is complex in manual operation, and is large in material loss and labor cost.

The crushing and grinding process is a process of extruding, rolling, impacting and grinding ores by using energy through a grinding machine to cleave useful mineral monomers in the ores and facilitate the next stage of sorting. The grinding machine can be divided into the following parts according to different grinding media and grinding materials: ball mills, column mills, rod mills, tube mills, autogenous mills, rotary mortar mills, Raymond mills, vertical mills, multi-layer vertical mills, vertical roll mills, disk mills, DMC mills, etc.

The ball mill is widely applied to the production industries of cement, coal dust, novel building materials, refractory materials, chemical fertilizers, black and non-ferrous metal ore dressing, glass ceramics and the like, and is used for carrying out dry-type or wet-type grinding on various ores and other grindable materials. The device comprises a feeding part, a discharging part, a rotating part, a transmission part (a transmission gear, a motor, an electric control) and other main parts. The ball mill is composed of horizontal cylinder, hollow feeding and discharging shaft and grinding head, the cylinder is long cylinder, the grinding body is installed in the cylinder, the cylinder is made of steel plate, and is fixed with the cylinder by steel lining plate, the grinding body is generally steel ball, and is loaded into the cylinder according to different diameters and a certain proportion, the grinding body can also be steel section. When the ball mill barrel rotates, the grinding body is attached to a lining plate of the barrel and taken away by the barrel under the action of inertia and centrifugal force and friction force, and when the grinding body is taken to a certain height, the grinding body is thrown off under the action of gravity of the grinding body, and the falling grinding body breaks the material in the barrel like a projectile. The hollow shaft is made of cast steel, the lining can be detached and replaced, the rotary large gear is machined by cast hobbing, and the cylinder body is embedded with a wear-resistant lining plate, so that the wear-resistant cylinder has good wear resistance. Is a device for dry or wet grinding in the production industries of silicate products, novel building materials, refractory materials, fertilizers, ferrous and nonferrous metals, quartz sand, glass ceramics and the like. The ball mill has a large application range, but has extremely high energy consumption, the power consumption of the ball mill is about 30 degrees per ton for grinding ore of 200 meshes generally, the loss of the steel balls and the lining plates can reach about one kilogram per ton, the ball mill has a large volume and hundreds of tons in weight, a special factory needs to be built for placement, and the capital investment is large.

The column mill and the vertical mill adopt a continuous repeated rolling grinding principle, the upper part of the column mill is driven to drive the main shaft to rotate, so that the roller rotates in the annular conical lining, after materials are fed from the upper part, a material layer is formed between the roller and the lining plate under the action of dead weight and upper part pushing material, the material layer is subjected to powder formed by rolling of the roller, and finally, the materials are automatically discharged from the lower part of the column mill. The roller only performs regular revolution and rotation, the material layer acting force mainly comes from the extrusion force and the pressure given by the elastic device, and the roller only performs regular rotation and revolution, so that the loss and abrasion caused by the collision between the roller and the lining plate are avoided, the energy saving and consumption reduction effects of the column mill are better than that of a ball mill, but the application range of the ball mill is large, and a lot of ores with large hardness cannot be finely ground. The column mill and the vertical mill have the common problems of abrasion of a grinding roller and a grinding disc lining plate of the vertical mill, abrasion of a bearing chamber of the grinding roller of the vertical mill, leakage of a speed reducer and the like due to poor working conditions in the use process. Immediately, grinding roller body and wear-resisting welt are at the use, in case the fit clearance appears, will make wearing and tearing aggravation between body and the welt, and hot-blast and cement granule in addition lead to the production of slot to constantly erodeing of fitting surface, cause to strike the collision between body and the welt, make the welt produce the crackle even fracture when serious, the machine damages, especially the damage of speed reducer, causes malignant incident. Once the problems occur, the common repair method is difficult to solve, and the replacement cost is high; the assembly requirement of the grinding roller bearing of the vertical mill is strict, and enterprises generally adopt a mode of putting the bearing in dry ice for cooling for assembly. Once a gap is formed between the bearing and the bearing chamber, the normal operation of the bearing is influenced, the bearing is heated, and the bearing burning phenomenon is caused in serious cases; the leakage of the vertical mill speed reducer not only affects the attractive appearance of the machine, but also wastes oil products and causes great trouble to the maintenance of equipment.

The Raymond mill mainly comprises a main machine, an analyzer, a blower, a finished product cyclone separator, a pipeline device, a motor and the like. The main machine consists of a frame, an air inlet volute, a scraper knife, a grinding roller, a grinding ring, a housing and a motor. The working principle of the Raymond mill is as follows: after the materials are crushed to the required granularity, the materials are conveyed to a storage hopper by a lifter and then are uniformly and continuously conveyed into a grinding chamber of a main machine of a Raymond mill by a vibrating feeder, a grinding roller shaft is arranged on a plum flower stand, the grinding roller is suspended below the plum flower stand and is driven to rotate by a transmission device, the grinding roller swings outwards under the action of centrifugal force during rotation and is tightly pressed on a grinding ring, and a scraper knife shovels the materials and conveys the materials to the position between the grinding roller and the grinding ring, so that the crushing purpose is achieved due to the rolling of the grinding roller. The fine powder after the grinding of the materials is carried into an analyzer along with the circulating air of a blower for sorting, the materials with excessive fineness fall back to be reground, and the qualified fine powder enters a finished product cyclone powder collector along with the air flow and is discharged through a powder outlet pipe to obtain a finished product. The grinding machine has the advantages that certain moisture is generated in the grinding chamber of the Raymond mill due to the fact that ground materials have certain moisture, the moisture is evaporated when the materials are ground, the joints of all pipelines of the whole machine are not tight, outside air is sucked in, circulating air pressure is increased, the grinding machine is guaranteed to work in a negative pressure state, increased air flow is discharged into the dust remover through the residual air pipe, and the air is purified and then discharged into the atmosphere. The Raymond mill can only mill mineral materials with low hardness, such as limestone, coal and the like, the yield is low, a roller bearing of the Raymond mill needs to be refueled and maintained every shift every day, continuous large-scale production cannot be realized, upward wind force in the Raymond mill is large, fine materials are difficult to form a material layer on a grinding ring, and accordingly superfine grinding is difficult.

In China, a large amount of metal mineral resources such as iron ore, ilmenite and gold ore with low embarrassment fineness cannot be reasonably utilized, one important factor is that the superfine grinding power consumption of the minerals is extremely high, the yield is low, and the mining of the mineral products is economically irreparable. Coal mine is needed to be finely ground for coal power and steel making, the pulverized coal is more fully combusted as the pulverized coal is finer, but the pulverized coal is limited by ore grinding technology, the pulverized coal is ground to about 400 meshes, the power consumption of the ball mill is larger than the power increased by pulverized coal combustion, the cost is not low in economy, the carbon ash content is high due to the emission of coal power and steel making waste gas, and the atmospheric environment is polluted. The haze reason in winter in northern China is that the fineness of coal powder does not reach the standard, the weather and the like are only surface phenomena, grinding in the cement industry in China is a large energy-consuming household, the power consumption accounts for two percent of the total power consumption in China, the power consumption for producing one ton of cement on average consumes ninety degrees, the grinding fineness is unsatisfactory, two hundred meshes and more than ten percent of particles cannot pass through, the cement fineness and the passing rate determine the quality of the cement, and the finer value of the cement is higher, and the higher value of the passing rate is higher. All the problems are difficult to solve and urgent problems in the prior art, and therefore, the market urgently needs an ultrafine ore grinding mill with low energy consumption and high yield to solve the production problems.

With the continuous and fine quality requirement of the current market on the powder product, the powder passing rate of foreign advanced enterprises is more than ninety percent on the requirement of the ore grinding mesh number, while the actual passing rate of the national powder enterprises is less than eighty percent, thereby not only influencing the ore dressing effect, but also reducing the quality requirement of the ore product.

Iron removal from non-metallic mineral materials such as kaolin, potash feldspar, quartz sand, magnesium oxide, aluminum oxide and the like has been a technical problem in the field, particularly, the kaolin has the very few iron oxide impurities, so that the quality of the kaolin is greatly reduced, and iron impurities such as scrap iron, iron powder and the like can be generated in the ore grinding production process of ore grinding equipment such as a ball mill and the like, so that secondary pollution is caused, and the quality improvement of the minerals is not facilitated.

Disclosure of Invention

The first main reason is that the grinding part is actually a relatively large surface rather than a point and a line, so that the driving force is doubled, the mechanical energy loss is increased, and meanwhile, the load of transmission parts such as bearings, gears and the like is also increased, so that the service life of the grinding machine is greatly shortened. The second main reason is that during the fine grinding of the ore, the accumulated powder has great fluidity and flows away under the stamping of the grinding part, and the mechanical energy and the kinetic energy of the grinding part mostly act on the grinding part and the lining plate, so that the energy is greatly wasted, and the mechanical damage of the grinding part is also caused. The third main reason is that a part of the punching kinetic energy of the grinding part is transferred to the opposite grinding part and the lining plate through the ore powder, and the generated heat energy and the sound energy are wasted. The fourth main reason is that the ore can not reach the fineness requirement in the first time when the grinding part is contacted with the ore, therefore, the ore must be repeatedly pressed and ground, the ground ore does not immediately separate from the grinding part, the grinding time of the mineral aggregate in the ball mill is as long as dozens of minutes, the grinding time of the mineral aggregate in the vertical mill is also several minutes, long-time repeated grinding can generate a large amount of redundant heat in the grinding production process, which is an important source of energy consumption, if the temperature is reduced without water vapor, the temperature of the powder and the temperature of the machine body can exceed more than 200 degrees, even if the temperature is reduced by water vapor, the temperature is close to 100 degrees, the part of heat energy accounts for the vast majority of the energy consumption of the mill, not only electric energy is wasted, but also the temperature environment for equipment and powder operation is damaged.

Aiming at solving the problems of extremely low grinding efficiency and extremely high energy consumption of the existing ore grinding machine, improving the quality of powder and reasonably utilizing and exploiting fine refractory gold ore, iron ore, ilmenite and the like, the utility model utilizes the momentum of a grinding roller rolling at high speed to roll ore particles under the action of centrifugal force generated by high-speed revolution along a grinding ring according to the advantages and the disadvantages of various ore grinding machine technologies, and the technical principle is as follows: the grinding roller is driven by a plurality of driving shafts on the turbine disc, the grinding roller rolls at a high speed along the inner wall of the grinding ring, ores are crushed under the high-speed rolling of the grinding roller, and fine particles after crushing are taken away by wind power generated by the turbine, so that the waste of electric energy caused by repeated pressing and grinding is avoided. The utility model has the main technical points that the hollow grinding roller is in loose fit with the driving shaft, and the grinding roller and the bearing are in tight fit without being like a Raymond mill and a vertical mill. The high-speed rotation of the grinding roller has high momentum, ore particles falling between the grinding roller and the grinding ring can be subjected to the high-speed rotation momentum of the grinding roller and centrifugal pressure generated by revolution of the grinding roller along the inner wall of the grinding ring, and under the relative punching of the two forces, the momentum of the grinding roller part rolling at high speed is converted into impulse acting on the ore to crush the ore particles.

In order to achieve the above object, a first technical solution adopted by the present invention is: including grinding and rolling, grinding ring, turbine assembly, the pot body, motor, transmission, feed inlet, discharge gate, bearing, frame, its characterized in that: the machine frame is provided with a pot body which is in a pot shape and consists of a pot barrel, a pot cover and a pot bottom, a grinding ring is arranged in the pot body and is in a circular ring shape, the outer edge of the grinding ring is tightly attached to the inner wall of the pot barrel, a turbine assembly is arranged in the grinding ring and comprises a turbine disc, turbine blades, a driving shaft and a turbine main shaft, the turbine disc is in a disc shape and is provided with a plurality of turbine blades, the turbine blades are in a long strip shape, the large circle of the turbine disc is fixedly provided with a plurality of driving shafts, the driving shaft is vertically erected on the turbine disc, the center of the circle of the turbine disc is provided with the turbine main shaft, the disc surface of the turbine disc is perpendicular to the axis of the turbine main shaft, the axis of the turbine main shaft is coincided with the center of the grinding ring, and a bearing is arranged at the pot bottom or the center of the pot cover, the upper end of the turbine main shaft penetrates through the bearing, a lower bearing is arranged on a rack right below the bearing at the center of the pot bottom, the lower end of the turbine main shaft is matched with the lower bearing, the turbine main shaft is connected with a transmission device or is directly connected with a motor, the transmission device is connected with the motor, the transmission device is matched with a belt wheel or a gear set, the motor is fixedly arranged on the rack, a plurality of grinding rollers are placed on the turbine disc, the grinding rollers are cylindrical, the circle center of each cylindrical grinding roller is a blind hole, the blind holes of the grinding rollers are sleeved with a driving shaft, the blind holes of the grinding rollers are in loose fit with the driving shaft, when the turbine assembly rotates, the grinding rollers are driven to roll by the driving shaft on the turbine assembly, a feeding hole is arranged at the center of the pot cover or near the center, and a discharging hole is arranged at the pot bottom, ore grinding requirements: the included angle of the ore particles falling between the grinding roller and the grinding ring is smaller than the occlusion included angle.

In order to achieve the above object, the second technical solution adopted by the present invention is: including grinding and rolling, grinding ring, turbine assembly, the pot body, motor, transmission, feed inlet, discharge gate, bearing, frame, hierarchical bars, its characterized in that: the machine frame is provided with a pot body which is in a pot shape and consists of a pot barrel, a pot cover and a pot bottom, a grinding ring is arranged in the pot body and is in a circular ring shape, the outer edge of the grinding ring is tightly attached to the inner wall of the pot barrel, a turbine assembly is arranged in the grinding ring and comprises a turbine disc, turbine blades, a driving shaft and a turbine main shaft, the turbine disc is in a disc shape and is uniformly provided with a plurality of turbine blades, the turbine blades are in a long strip shape, the large circle of the turbine disc is fixedly provided with a plurality of driving shafts, the driving shaft is vertically erected on the turbine disc, the circle center of the turbine disc is provided with a turbine main shaft surface, the axis of the turbine disc is perpendicular to the axis of the turbine main shaft, the axis of the turbine main shaft is coincided with the circle center of the grinding ring, and the center of the pot bottom is provided with a bearing, the upper end of the turbine main shaft penetrates through the bearing, a lower bearing is arranged on a rack right below the bearing at the center of the pot bottom, the lower end of the turbine main shaft is matched with the lower bearing, the turbine main shaft is connected with a transmission device or is directly connected with a motor, the transmission device is connected with the motor, the transmission device is matched with a belt wheel or a gear set, the motor is fixedly arranged on the rack, a plurality of grinding rollers are arranged on the turbine disc, the grinding rollers are cylindrical, the circle center of each cylindrical grinding roller is a blind hole, the blind holes of the grinding rollers are sleeved with a driving shaft, the blind holes of the grinding rollers are in loose fit with the driving shaft, when the turbine assembly rotates, the grinding rollers are driven to roll by the driving shaft on the turbine assembly, a feeding hole is arranged at the center of the pot cover or near the center, and a grading grid is arranged on the grinding ring, the grading grid is an annular grid which is formed by a plurality of grid sheets at certain intervals along the inner wall of the boiler barrel, a volute discharge port is arranged at the periphery of the grading grid, a mesh regulating valve is arranged in the volute discharge port, and the ore grinding requirement is as follows: the included angle of the ore particles falling between the grinding roller and the grinding ring is smaller than the occlusion included angle.

The bottom of the blind hole of the grinding roller is a concave surface or a plane, and when the blind hole of the grinding roller is a plane, a permanent magnet is arranged in the blind hole. The grinding roller is generally in a circular tube shape, the inner hole is a blind hole, powder dust is prevented from entering the blind hole, the blind hole is a concave bottom, friction between the end face of a driving shaft and the bottom face of the blind hole can be avoided, and when the blind hole is a plane, the permanent magnet is arranged to generate magnetic suspension to prevent end face friction. The grinding roller is made of alloy steel with high hardness and ceramic materials, such as high manganese steel, high chromium alloy steel, alumina ceramic, zirconia ceramic and other wear-resistant materials.

The driving shaft consists of a fixed shaft lever, a driving bearing, a bearing protection pipe or a permanent magnet, wherein the driving bearing is sleeved on the bearing protection pipe, the fixed shaft lever is sleeved on the driving bearing, the permanent magnet is arranged at the top end of the fixed shaft lever, the permanent magnet and the permanent magnet arranged in the grinding round hole are mutually repelled, and the grinding roll is supported by the repulsive force.

The matching of the driving shaft and the circular hole of the grinding roller is not a common tight matching mode, but a moving space of a few millimeters or even a few centimeters is reserved, because the circular rolling bodies roll along a fixed surface without a driving shaft and the rolling bodies are in close fit, the movable radius of the rolling bodies is limited by the fixed surface such as the ground surface or a grinding ring, the close fit of the shaft and the bearing not only does the same, but also greatly increases the load of the bearing in the grinding roller, because the pressure applied to the bearing at this time is the pressure of the roller pressing the ore, namely the pressure in the centrifugal radial direction, the pressure can reach several tons, the driving shaft only has a driving force in the circumferential direction in the round hole of the grinding roller and does not have centrifugal radial pressure, and the driving force in the circumferential direction is generally only a few kilograms to dozens of kilograms, which is about one percent of the pressure of the grinding roller for extruding ore.

The balance tray is arranged on the turbine main shaft and is in a disc shape and provided with a plurality of bolt holes, the circle center of the balance tray is fixedly connected with the turbine main shaft, the disc surface of the balance tray is perpendicular to the axis of the turbine main shaft, and the bolt holes of the balance tray are parallel to the axis of the turbine main shaft. The turbine disc is provided with a plurality of bolt holes close to the turbine main shaft, the bolt holes correspond to the bolt holes in the balance tray one by one, and the balance tray is used for ensuring the rotation balance of the turbine assembly.

The included angle of the ore particles falling between the grinding roller and the grinding ring is as follows: the width that falls into the ore granule between grinding roll and the grinding ring and the tangent line that grinds and roll the contained angle that forms, the interlock contained angle refer to: when the included angle of ore particles falling between the grinding roller and the grinding ring is equal to or smaller than a certain specific angle, the relative rotation of the grinding roller and the grinding ring generates extrusion force on the ore particles which is larger than outward lateral shearing force, at the moment, the ore particles are tightly engaged by the grinding roller and the grinding ring, the ore particles move along with the grinding roller and are crushed by extrusion, generally, the engagement included angle of most types of ore particles is between 20 and 40 degrees, the friction coefficient of some types of ore particles and the grinding roller surface is larger, the engagement included angle is between 40 and 50 degrees, the size of the ore particles is smaller than the engagement included angle, under the extrusion action, the ore particles cannot be extruded by the lateral shearing force but are engaged by the grinding roller and the grinding ring to be crushed, if the included angle between the ore particles and the tangent line of the grinding roller is larger than the engagement included angle, the ore particles are extruded by the lateral shearing force, and thus the ore particles cannot be crushed by the grinding roller, therefore, the diameter of the grinding roll must be designed in consideration of the above-mentioned requirement of the included angle of engagement, and the larger the diameter of the grinding roll is, the larger the ore particles can be ground.

Usually, the ratio of the diameter of a grinding roller to the maximum size of a fed ore is about 20 to 1, the grinding roller with the diameter of 200 mm can grind about 10 mm ore at most, if larger ore is to be ground, the diameter of the grinding roller must be increased, the diameter of the grinding roller is too large, and the grinding roller is not beneficial to the internal installation of a pot body and the normal work of a turbine, so that the requirement of grinding large-particle ore is met on the premise of not increasing the diameter of the grinding roller, the grinding roller can be designed into an I-shaped grinding roller, the I-shaped grinding roller is an I-shaped roller body, the diameter of two ends of the I-shaped grinding roller is larger than that of a middle section, so that the I-shaped grinding roller can grind relatively coarse large-particle ore, for example, the diameter of two ends of the I-shaped grinding roller is 200 mm, the diameter of the middle section is 190 mm, the maximum coarse ore of about 15 mm can be ground, the discharged material is less than 5 mm, and the ore material less than 5 mm can be directly ground into powder with various mesh numbers by the grinding roller with the diameter of 100 mm.

The grading grid is an annular grid formed by a plurality of grid pieces at certain intervals and surrounded along the inner wall of the boiler barrel, the grid pieces of the grading grid are generally distributed in the radial direction in the horizontal direction, and can also be inclined at a certain angle relative to the radial direction according to the ore grinding requirement, the discharge is large and the discharge is reverse inclined, the discharge is fine, the grid pieces of the grading grid are generally inclined inwards by 30-60 degrees in the vertical direction, so that the coarse material falls back to the grinding, a volute discharge port is arranged at the periphery of the grading grid, a mesh regulating valve is arranged in the volute discharge port, and the purpose of regulating the discharge mesh is achieved by regulating the air volume of the volute discharge port through the regulating valve. The classification principle is as follows: the high-speed rotating airflow generated by the rotation of the turbine drives the powder to rotate at a high speed, the powder rotating at a high speed has a time difference in the process of passing through the gap of the grading grid, the powder can flow towards the gap direction of the grading grid by opening the volute-shaped discharge port, the half size of the powder enters the time difference of the gap, if the time difference is larger than the time difference, the powder cannot pass through, otherwise, the powder can pass through. Such as: the clearance of grading bars is a millimeter wide, and powder rotational speed is one hundred meters per second, and grading bars ejection of compact wind speed one meter per second, then be greater than 20 microns powder can not pass through, and the powder that is less than 20 microns can both pass through, if the anti-turbine direction of rotation of the bars piece slope of grading bars, powder ejection of compact wind speed vector diminishes, then the powder that is greater than 10 microns can not pass through, and the powder that is less than 10 microns can both pass through.

The grinding ring is provided with a grading groove which is a vertical groove on the inner side of the annular grinding ring and has the function of grading powder, the grading groove is narrow and deep, generally has the width of several millimeters and is more than several centimeters deep, the inner part of the grading groove is narrow and the outer part of the grading groove is wide, the channel is prevented from being blocked by large-particle mineral aggregate, the grading grooves are generally distributed radially in the horizontal direction and can also be inclined to the turbine rotating direction by a certain angle according to the grinding requirement, the discharged material is large and is inclined reversely, the discharged material is fine, the high-speed rotating airflow generated by the turbine rotation drives the powder to rotate at a high speed on the inner wall of the grinding ring, the high-speed rotating powder has a time difference in the process of passing through the grading groove, the discharge hole is opened, the powder flows towards the direction of the grading groove, and the time difference of half size of the powder entering the gap is larger than the time difference, the powder cannot pass through, otherwise, the powder can pass through. Such as: the gap of the grading groove is 5 mm wide, the rotating speed of the powder is one hundred meters per second, the discharging wind speed of the grading groove is one meter per second, the powder larger than 100 micrometers can not pass through, and the powder smaller than 100 micrometers can pass through. The grading tank is mainly used for discharging powder with the grain number of about 10 to 100 meshes.

The utility model has the beneficial effects that: the circular rolling bodies roll along a fixed surface without the need of tightly matching the driving shaft with the rolling bodies, the movable radius of the rolling bodies is limited by the fixed surface such as the ground or a grinding ring, the tight matching of the shaft and the bearing not only greatly increases the load of the bearing in the grinding roller, but also greatly increases the load of the bearing in the grinding roller because the pressure borne by the bearing at the moment is the pressure of the grinding roller for extruding ore, namely the pressure in the centrifugal radial direction, and the pressure can reach several tons. The utility model utilizes the kinetic energy of the high-speed rolling of the grinding roller to roll the ore sand, the grinding roller is almost in line contact with the material powder, the high-speed rolling of the grinding roller generates a side shearing force which is very labor-saving, so that the ore particles are crushed and cleaved, and the crushed and cleaved fine ore particles are taken away by the wind power generated by the turbine and cannot be continuously pressed and ground, thereby avoiding the waste of electric energy caused by repeated pressing and grinding without over-grinding. The first main reason is that the grinding part is contacted with the ore and actually is a relatively large surface rather than a point and a line, so that the driving force is doubled, the mechanical energy loss is increased, and meanwhile, the load of transmission parts such as bearings, gears and the like is also increased, so that the service life of the grinding device is greatly shortened. The second main reason is that during the fine grinding of the ore, the accumulated powder has great fluidity and flows away under the stamping of the grinding part, and the mechanical energy and the kinetic energy of the grinding part mostly act on the grinding part and the lining plate, so that the energy is greatly wasted, and the mechanical damage of the grinding part is also caused. The third main reason is that a part of the punching kinetic energy of the grinding part is transferred to the opposite grinding part and the lining plate through the ore powder, and the generated heat energy and the sound energy are wasted. The fourth main reason is that the ore can not reach the fineness requirement in the first time when the grinding part is contacted with the ore, and the ground ore does not immediately separate from the grinding part, so the ore must be repeatedly pressed and ground, which is an important source of energy consumption, and the ball mill needs dozens of minutes from feeding to discharging, and the vertical mill needs several minutes, but the utility model only has a few seconds. The annual power consumption of grinding equipment such as a ball mill and the like accounts for 4 percent of the total electric quantity in China, the energy consumption of a turbine grinding mill with the same treatment capacity is less than one fifth of that of the ball mill, the comprehensive adoption and popularization of the utility model can save hundreds of billions of electricity for the country every year, the once mesh passing rate of powder of the existing grinding equipment in China is only about fifty percent actually, and the powder needs to be subjected to graded treatment, thereby not only affecting the mineral separation effect, but also reducing the quality requirement of mineral products, but also the turbine grinding mill has the function of automatically screening powder, the mesh passing rate of the powder after grinding reaches one hundred percent, the ball mill and a vertical grinding mill generate a large amount of redundant heat in the grinding production process, the temperature of the powder without water vapor cooling can exceed 200 ℃ and even if water vapor cooling is 100 ℃, the heat energy accounts for the most of the energy consumption, and the electric energy is wasted and the temperature environment for operating the equipment and the powder is damaged, the utility model hardly generates excessive heat in the ore grinding production process, thereby not only saving electric energy, but also ensuring good operation environment of each part of the equipment and ensuring that the powder property is not influenced by high-temperature environment. The utility model can mix and grind ores, and simultaneously finely grind various different mineral aggregates, so that the mineral aggregates can be uniformly mixed during discharging, can be directly fired in a kiln, is particularly suitable for dry mixing and kiln entering in the cement industry, and saves a large amount of standard coal. The rotating speed of the grinding rolls of the utility model is five to ten times faster than that of the grinding rolls of the Raymond mill and the vertical mill, and the number of the grinding rolls can reach dozens of times, thus the grinding yield is increased by more than ten times. The utility model has stable and reliable mechanical structure, the weight of the equipment with the same treatment capacity is only about one tenth of that of the ball mill, the working noise of the utility model is far less than that of the ball mill, and the harm to the health of workers is avoided.

Drawings

Fig. 1 is a schematic view of a grinding roll structure.

FIG. 2 is a schematic top view of a turbine assembly.

FIG. 3 is a schematic view of a turbine assembly configuration.

FIG. 4 is a schematic view of the structure of the pan body.

Fig. 5 is a schematic view of a turbine mill.

Fig. 6 is a schematic view of a turbine mill.

Fig. 7 is a schematic diagram of a hierarchical gate structure.

FIG. 8 is a schematic view of a hierarchical tank structure.

Fig. 9 is a schematic view of an i-shaped grinding roll structure.

Detailed Description

Example 1, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 9: a turbine pulverizer comprises a grinding roller 1, a grinding ring 2, a turbine assembly 3, a boiler body 4, a motor 5, a transmission device 6, a feeding hole 7, a discharging hole 8, a bearing 9 and a frame 10. The frame 10 is a rectangular frame structure, a combined frame is made of a plurality of thick square steel beams or steel plates, and can also be made into an integral casting, the integral casting is thick and stable, the vibration displacement generated by high-power load is prevented, the frame structure is relatively light and convenient, the position shifting is facilitated, the frame 10 structure generally takes four square steel beams with thicker sizes as vertical upright posts, a certain distance is reserved between the four upright posts, a transverse square steel beam and a longitudinal square steel beam are fixedly connected, the transverse square steel beam and the longitudinal square beam steel are just cross beams and longitudinal beams of the frame 10, a foot rest is arranged below the frame 10, and four upright posts are generally taken as foot rests,

the frame 10 on set up and install the pot body 4, the pot body 4 be the pot shape, constitute by a boiler drum 40, pot cover 41 and bottom of a boiler 42, a boiler drum 40 generally is the cylinder, adopts the seamless steel pipe preparation of major diameter, and bore and wall thickness are confirmed according to the ore grinding requirement, and generally speaking, unit interval handling capacity is big, then the boiler drum 40 bore is just big, and the section of thick bamboo wall just also is thicker, all welds flange ring 400 at a boiler drum 40 upper end and lower extreme, flange ring on have a plurality of bolt hole, boiler drum 40 sets up the welding on one side has rotation axis 401. Pot cover 41 generally is the disc flange, and there is the hole in the middle of, and this hole is exactly the feed inlet 7 of turbine milling machine, and 41 flange borders of pot cover enclose and have a plurality of bolt hole and the bolt hole one-to-one on the flange ring of the upper end of

drum

40, 41 one side of pot cover is provided with swivel bearing 410, and swivel bearing 410 uses with rotation axis 401 cooperation, and pot cover 41 can the horizontal rotation, the switch pot cover 41 of being convenient for. The pot bottom 42 is generally in a disc flange shape, a spindle hole 420 is formed in the middle of the pot bottom, a bearing 9 is arranged and connected with the pot bottom, a plurality of air inlet holes 421 are formed in the periphery of the spindle hole 420, the air inlet holes 421 are used for enabling dust to flow to the upper portion of the pot body 4, the dust is prevented from falling into the bearing 9 and damaging the bearing 9, a plurality of bolt holes are formed in the flange edge of the pot bottom 42 and correspond to the bolt holes in the flange ring at the lower end of the pot barrel 40 in a one-to-one mode, and the pot bottom 42 can be welded with the lower end of the pot barrel 40 in a connecting mode. The pot cover 41 and the pot bottom 42 are generally integrally cast and formed in one step by steel with high structural strength.

The pot body 4 is provided with a grinding ring 2, the grinding ring 2 is in a ring shape, the outer edge of the grinding ring is tightly attached to the inner wall of the pot barrel 40, and the grinding ring 2 is generally made of alloy steel or ceramic materials with high hardness and wear resistance, such as high manganese steel, high chromium alloy steel, alumina ceramics, zirconia ceramics and other wear-resistant materials. The wear-resistant alloy steel is adopted, the grinding ring 2 is generally an integral annular casting, the wear-resistant ceramic material is adopted, the ceramic material is difficult to sinter a large casting, a plurality of arc-shaped ceramic sections can be sintered and cast in sections, the circular grinding ring 2 is installed and spliced in the boiler barrel 40, and the spliced circular grinding ring 2 requires that the boiler barrel 40 has enough wall thickness to support the centrifugal pressure of the grinding roller 1 rotating along the grinding ring 2.

The turbine assembly 3 is arranged in the grinding ring and comprises a turbine disc 30, turbine blades 31, a driving shaft 32 and a turbine main shaft 33, the turbine disc 30 is in a disc shape, a plurality of turbine blades 31 are arranged on the upper surface and the lower surface of the turbine disc 30, the turbine blades 31 are in a long strip shape and are uniformly distributed at equal angles, the number of the turbine blades 31 is at least two, more turbine blades are arranged according to the grinding requirements, and the turbine blades can be two, three, four, six, eight, ten, twelve to one hundred and the like. The turbine blade 31 has the first function of enabling the feeding material to flow onto the inner wall of the grinding ring 2 along the turbine blade 31 in an accelerating mode, the second function of generating cyclone and air pressure in the pot body 4, the turbine disc 30 and the turbine blade 31 are formed in a one-step casting mode or welded, ceramic wear-resistant materials such as aluminum oxide ceramic plates and zirconium oxide ceramic plates can be attached to the surfaces of the turbine disc 30 and the turbine blade 31, and a plasma spraying ceramic process can be carried out on the surfaces of the turbine disc 30 and the turbine blade 31. A plurality of driving shafts 32 are fixedly arranged at the large circle diameter position of the turbine disc 30, namely, the circle surface far away from the center of the turbine disc 30, the driving shafts 32 are distributed at equal angles and vertically erected on the turbine disc 30, the number of the driving shafts 32 is at least two, the driving shafts are mostly arranged according to the ore grinding requirement and is consistent with the number of the turbine blades 31, and two, three, four, six, eight, ten, twelve to one hundred and the like are all possible. The driving shaft 32 is composed of a fixed shaft rod 321, a driving bearing 320, a bearing protection pipe 322 and a permanent magnet 17, the driving bearing 320 is sleeved on the bearing protection pipe 322, the fixed shaft rod 321 is sleeved on the driving bearing 320, the permanent magnet 17 is arranged at the top end of the fixed shaft rod 321, the permanent magnet 17 and the permanent magnet 17 arranged in the blind hole 16 of the grinding roller 1 are mutually repelled, the grinding roller 1 is supported by the repulsive force, and the magnetic suspension effect is achieved.

The end face of the blind hole 16 of the grinding roller 1 is a concave face or a plane, the concave face of the end face has the function of avoiding friction between the driving shaft 32 and the end face of the blind hole 16, and the permanent magnet 17 is arranged in the grinding roller 1 when the blind hole 16 is a plane. The grinding roller 1 is generally in a circular tube shape, an inner hole is a blind hole, the blind hole is used for preventing powder dust from entering, and the grinding roller 1 is generally made of alloy steel and ceramic materials with high hardness, such as high manganese steel, high chromium alloy steel, alumina ceramics, zirconia ceramics and other wear-resistant materials. The size of each grinding roller 1 is designed according to the ore grinding requirement, generally the grinding roller 1 is several kilograms to tens of kilograms, the principle that the driving shaft 32 drives the grinding roller 1 to roll is different from a Raymond mill and a vertical mill, the matching of the driving shaft 32 and the blind hole 16 of the grinding roller 1 is not a common close matching mode but a moving space of several millimeters or even several centimeters is reserved, because the circular rolling body rolls along a fixed surface without the need of tightly matching the driving shaft 32 and the rolling body, the moving radius of the rolling body is limited by the fixed surface such as the ground or a grinding ring, the close matching of the shaft and the bearing not only does the same, but also greatly increases the load of the bearing in the grinding roller, because the pressure applied to the bearing at the moment is the pressure of the grinding roller extruding ore, namely the pressure in the centrifugal radial direction, the pressure can reach several tons, and the problem is solved by the movable matching, the driving shaft 32 only has the driving force in the circumferential direction in the blind hole 16 of the grinding roller 1, there is no centrifugal radial pressure, and the driving force in the circumferential direction is generally only a few kilograms to tens of kilograms, which is about one percent of the ore pressing pressure of the grinding roller.

The loose fit between the mill roller and the driving shaft is a key technology, so that the huge pressure of the bearing of the driving shaft in the radial direction can be avoided, the rotating speed of the bearing can be increased in multiples, the rotating speed of the mill roller is five to ten times faster than that of the mill rollers of a Raymond mill and a vertical mill, the centrifugal pressure is increased in dozens of times, the diameter of the mill roller can be reduced, the number of the mill rollers can reach dozens of times, and the grinding yield is increased by more than ten times.

Usually, the ratio of the diameter of the grinding roller 1 to the maximum size of the fed ore is about 20 to 1, the grinding roller 1 with the diameter of 200 mm can grind ore with the diameter of about 10 mm at most, if larger ore is to be ground, the diameter of the grinding roller 1 needs to be increased, the diameter of the grinding roller 1 is too large, the internal installation of a pot body and the normal work of a turbine are not facilitated, therefore, the requirement of grinding large-particle ores is met on the premise of not increasing the diameter of the grinding roller 1, the grinding roller 1 can be designed into an I-shaped grinding roller 101, the I-shaped grinding roller 101 is an I-shaped roller body, the diameter of two ends of the I-shaped grinding roller is larger than that of the middle section, therefore, large-particle ores with larger diameter can be ground, for example, the I-shaped grinding roller 101 with the diameter of 200 mm at two ends and the diameter of 190 mm at the middle section can grind ores with the diameter of about 15 mm to the maximum extent, the discharged materials are less than 5 mm, and the ores less than 5 mm can be directly ground into powder with various meshes by the grinding roller 1 with the diameter of 100 mm.

The balance tray 34 is arranged on the turbine main shaft 33, the balance tray 34 is disc-shaped and provided with a plurality of bolt holes, the circle center of the balance tray 34 is fixedly connected with the turbine main shaft 33, the disc surface of the balance tray 34 is perpendicular to the axis of the turbine main shaft 33, and the bolt holes of the balance tray 34 are parallel to the axis of the turbine main shaft 33. On the turbine disk 30, a plurality of bolt holes are arranged at the position close to the turbine main shaft 33, the bolt holes correspond to the bolt holes on the balance tray 34 one by one, and the balance tray 34 is used for ensuring the rotation balance of the turbine assembly 3.

The turbine main shaft 33 vertically penetrates through the circle center of the turbine disc 30, bolt holes in the turbine disc 30 correspond to bolt holes in the balance tray 34 one by one and are fastened by bolts, and the bolts can be fixedly connected by welding steel bars and the like to prevent the bolts from loosening. The axial center of the turbine main shaft 33 and the center of the grinding ring 2 must be coincident, the gap between the edge of the turbine disk 30 and the grinding ring 2 is generally about one millimeter, and the air pressure generated by the turbine blades 31 on the turbine disk 30 is enough to allow the powder on the turbine disk 30 to fall from the gap. The center of the pot bottom 42 is provided with a bearing 9, one end of the turbine main shaft 33 penetrates through the bearing 9, the bearing 9 is a main bearing and is generally lubricated by circulating oil, the other main bearing is also arranged at the bottom of the frame and is also lubricated by circulating oil, the two main bearings can ensure the rotation balance of the turbine assembly 3, one end of the turbine main shaft 33 is connected with a transmission device 6, the transmission device 6 is connected with a motor 5, the transmission device 6 is preferably in belt transmission, the turbine main shaft 33 cannot be directly connected with the motor 5 generally, power needs to be indirectly connected and transmitted through the transmission device 6, the motor 5 is vertically and fixedly arranged on the frame 10, and the output shaft of the motor 5 can be arranged upwards or downwards. The grinding roller 1 is arranged on a driving shaft 32 of the turbine disc 30, when the turbine assembly 3 rotates, the driving shaft 32 on the turbine assembly drives the grinding roller 1 to roll, a feeding hole 7 is arranged at the center of the pot cover 41, a discharging hole 8 is generally arranged below the pot bottom 42, a plurality of air outlet holes 80 are arranged on the periphery of the pot bottom 42, and a shell for collecting air flows of the air outlet holes 80 is the discharging hole 8.

The working principle is as follows: the gap between the grinding roller and the grinding ring is adjusted in advance to reach the width of the required number of ore grinding, a power supply is switched on, the motor works, the turbine is driven by a belt to rotate, the grinding roller is pulled to the inner wall of the grinding ring by centrifugal force, the grinding roller is driven by a driving shaft to roll along the inner wall of the grinding ring, after the rated rotating speed is reached, mineral aggregate is sucked from a feed inlet through a screen, the mineral aggregate is uniformly accumulated on the inner wall of the grinding ring under the centrifugal acceleration of turbine blades to form a material layer, and is punched and crushed by the grinding roller rolling at high speed to form relatively small mineral aggregate particles which fall along the gap between the grinding roller and the grinding ring, other mineral aggregate particles which cannot pass through the gap between the grinding roller and the grinding ring are continuously punched and crushed by the grinding roller rolling at high speed until the mineral aggregate particles become relatively smaller mineral aggregate particles which reach the ore grinding requirement, the fineness of the grinding roller falls along the gap between the grinding roller and the grinding ring, and is finally carried away by a powder conveying device, and finishing the grinding work.

Example 2, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 8 and fig. 9: a turbine pulverizer comprises a grinding roller 1, a grinding ring 2, a turbine assembly 3, a boiler body 4, a motor 5, a transmission device 6, a feeding hole 7, a discharging hole 8, a bearing 9 and a frame 10. The frame 10 is a rectangular frame structure, a combined frame is made of a plurality of thick square steel beams or steel plates, and can also be made into an integral casting, the integral casting is thick and stable, the vibration displacement generated by high-power load is prevented, the frame structure is relatively light and convenient, the position shifting is facilitated, the frame 10 structure generally takes four square steel beams with thicker sizes as vertical upright posts, a certain distance is reserved between the four upright posts, a transverse square steel beam and a longitudinal square steel beam are fixedly connected, the transverse square steel beam and the longitudinal square beam steel are just cross beams and longitudinal beams of the frame 10, a foot rest is arranged below the frame 10, and four upright posts are generally taken as foot rests,

the frame 10 on set up and install the pot body 4, the pot body 4 be the pot shape, constitute by a boiler drum 40, pot cover 41 and bottom of a boiler 42, a boiler drum 40 generally is the cylinder, adopts the seamless steel pipe preparation of major diameter, and bore and wall thickness are confirmed according to the ore grinding requirement, and generally speaking, unit interval handling capacity is big, then the boiler drum 40 bore is just big, and the section of thick bamboo wall just also is thicker, all welds flange ring 400 at a boiler drum 40 upper end and lower extreme, flange ring on have a plurality of bolt hole, boiler drum 40 sets up the welding on one side has rotation axis 401. Pot cover 41 generally is the disc flange, and there is the hole in the middle of, and this hole is exactly the feed inlet 7 of turbine milling machine, and pot cover 41 flange limit encloses the bolt hole one-to-one on having a plurality of bolt hole and the drum 40 upper end flange ring, bottom of a boiler 42 generally is disc flange shape, and there is main shaft hole 420 in the middle of, and the setting is connected with bearing 9, and it has a plurality of inlet port 421 to open around main shaft hole 420, and the effect of inlet port 421 lets the dust flow to 4 upper portions of the pot body, avoids the dust to fall into bearing 9, damages bearing 9, and bottom of a boiler 42 flange limit encloses the bolt hole one-to-one on having a plurality of bolt hole and the drum 40 lower extreme flange ring, and bottom of a boiler 42 can also be the welding with the connected mode of drum 40 lower extreme. The pot cover 41 and the pot bottom 42 are generally integrally cast and formed in one step by steel with high structural strength. The discharge port 8 is generally arranged below the pot bottom 42, a plurality of air outlet holes 80 are arranged on the periphery of the pot bottom 42, the shell for collecting the air flows of the air outlet holes 80 together is the discharge port 8, the mesh number adjusting valve 81 is arranged on the discharge port 8, and the purpose of adjusting the mesh number of the discharge port 8 is achieved by adjusting the air volume of the discharge port 8 through the adjusting valve 81.

The pot body 4 is provided with a grinding ring 2, the grinding ring 2 is in a ring shape, the outer edge of the grinding ring is tightly attached to the inner wall of the pot barrel 40, and the grinding ring 2 is generally made of alloy steel or ceramic materials with high hardness and wear resistance, such as high manganese steel, high chromium alloy steel, alumina ceramics, zirconia ceramics and other wear-resistant materials. The wear-resistant alloy steel is adopted, the grinding ring 2 is generally an integral annular casting, the wear-resistant ceramic material is adopted, the ceramic material is difficult to sinter a large casting, a plurality of arc-shaped ceramic sections can be sintered and cast in sections, the circular grinding ring 2 is installed and spliced in the boiler barrel 40, and the spliced circular grinding ring 2 requires that the boiler barrel 40 has enough wall thickness to support the centrifugal pressure of the grinding roller 1 rotating along the grinding ring 2. The grinding ring 2 is provided with a grading groove 12, the grading groove 12 is a vertical cutting groove on the inner side of the annular grinding ring 2, the grading groove is narrow and deep, generally one millimeter to ten millimeters wide and more than several centimeters deep, the inner part and the outer part of the grading groove are narrow and wide, the large-particle mineral aggregate is prevented from blocking a channel, the grading groove 12 is generally radially distributed in the horizontal direction, and can also be inclined to the turbine rotating direction by a certain angle according to the grinding requirement, so that the discharged material is large and reversely inclined, the discharged material is fine, the working principle of the grading grid 12 is the same, the high-speed rotating airflow generated by the turbine rotation drives the powder to rotate at a high speed on the inner wall of the grinding ring, a time difference exists in the process that the high-speed rotating powder passes through the grading groove 12, the discharge port 8 is opened, the powder can flow towards the grading groove 12, and the time difference that half size of the powder enters a gap is generated, if the time difference is larger than the time difference, the powder cannot pass through, and otherwise, the powder can pass through. Such as: the gap of the grading groove 12 is 5 mm wide, the rotating speed of the powder is one hundred meters per second, and the discharging wind speed of the grading groove 12 is one meter per second, so that the powder larger than 100 micrometers can not pass through, and the powder smaller than 100 micrometers can pass through. The grading tank 12 is mainly used for discharging powder with the grain number of about 10 to 100 meshes.

The end face of the blind hole 16 of the grinding roller 1 is a concave face or a plane, the concave face of the end face has the function of avoiding friction between the driving shaft 32 and the end face of the blind hole 16, and when the blind hole 16 of the grinding roller 1 is a plane, the permanent magnet 17 is arranged in the blind hole 16. The grinding roller 1 is generally in a circular tube shape, an inner hole is a blind hole, the blind hole is used for preventing powder dust from entering, and the grinding roller 1 is generally made of alloy steel and ceramic materials with high hardness, such as high manganese steel, high chromium alloy steel, alumina ceramics, zirconia ceramics and other wear-resistant materials. The size of each grinding roller 1 is designed according to the ore grinding requirement, generally the grinding roller 1 is several kilograms to tens of kilograms, the principle that the driving shaft 32 drives the grinding roller 1 to roll is different from a Raymond mill and a vertical mill, the matching of the driving shaft 32 and the blind hole 16 of the grinding roller 1 is not a common close matching mode but a moving space of several millimeters or even several centimeters is reserved, because the circular rolling body rolls along a fixed surface without the need of tightly matching the driving shaft 32 and the rolling body, the moving radius of the rolling body is limited by the fixed surface such as the ground or a grinding ring, the close matching of the shaft and the bearing not only does the same, but also greatly increases the load of the bearing in the grinding roller, because the pressure applied to the bearing at the moment is the pressure of the grinding roller extruding ore, namely the pressure in the centrifugal radial direction, the pressure can reach several tons, and the problem is solved by the movable matching, the driving shaft 32 only has the driving force in the circumferential direction in the blind hole 16 of the grinding roller 1, there is no centrifugal radial pressure, and the driving force in the circumferential direction is generally only a few kilograms to tens of kilograms, which is about one percent of the ore pressing pressure of the grinding roller.

The turbine main shaft 33 vertically penetrates through the circle center of the turbine disc 30, bolt holes in the turbine disc 30 correspond to bolt holes in the balance tray 34 one by one and are fastened by bolts, and the bolts can be fixedly connected by welding steel bars and the like to prevent the bolts from loosening. The axis of the turbine main shaft 33 and the center of the grinding ring 2 must be coincident, the gap between the edge of the turbine disc 30 and the grinding ring 2 can be adjusted according to the discharging requirement, the gap is generally set to be about one millimeter, and the air pressure generated by the turbine blades 31 is enough to enable the powder on the turbine disc 30 to fall from the gap and flow out from the discharging port 8. The center of the pot bottom 42 is provided with a bearing 9, the turbine main shaft 33 penetrates through the bearing 9, the bearing 9 is a main bearing and is generally lubricated by circulating oil, the bottom of the machine frame is also provided with another main bearing and is also lubricated by circulating oil, the two main bearings can ensure the rotation balance of the turbine assembly 3, the turbine main shaft 33 is connected with a transmission device 6, the transmission device 6 is connected with a secondary motor 5, the transmission device 6 is preferably driven by a belt and a belt wheel, the turbine main shaft 33 cannot be directly connected with the motor 5 generally and needs to be indirectly connected with and transmit power through the transmission device 6, the motor 5 is vertically and fixedly arranged on the machine frame 10, and the output shaft of the motor 5 can be arranged upwards or downwards. The grinding roller 1 is arranged on a driving shaft 32 of the turbine disc 30, and the grinding roller 1 is driven to roll by the driving shaft 32 on the turbine assembly 3 when the turbine assembly 3 rotates.

The working principle is as follows: opening a discharge port in advance, adjusting the air quantity of the discharge port by an adjusting valve to enable the air quantity to meet the requirement of the ore grinding requirement, switching on a power supply, enabling a motor to work, driving a turbine to rotate by a belt, pulling a grinding roller to the inner wall of a grinding ring by centrifugal force, driving the grinding roller to roll along the inner wall of the grinding ring by a driving shaft, sucking ore materials from a feed port through a screen mesh after reaching rated rotating speed, uniformly accumulating the ore materials on the inner wall of the grinding ring under the centrifugal acceleration of turbine blades to form a material layer, punching and crushing the ore materials into relatively small ore material particles by the high-speed rolling grinding roller, opening the discharge port when the high-speed rotating powder passes through a grading groove, enabling the powder to flow in the direction of the grading groove, enabling half of the powder to enter a gap for a time difference, if the powder is larger than the time difference, enabling the powder to not pass through, otherwise enabling the powder to pass through, and enabling other ore material particles which cannot pass through the gap between the grinding roller and the grinding ring to continue to be punched and crushed by the high-speed rolling grinding roller, until the particles become relatively smaller mineral aggregate particles, the fineness of the powder required by grinding is achieved through the grading tank, and finally the powder is taken away by powder conveying equipment to finish the grinding work.

Example 3, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 6, fig. 7 and fig. 9: a turbine pulverizer comprises a grinding roller 1, a grinding ring 2, a turbine assembly 3, a boiler body 4, a motor 5, a transmission device 6, a feeding hole 7, a discharging hole 8, a bearing 9, a frame 10 and a grading grid 11. The frame 10 is a rectangular frame structure, a combined frame is made of a plurality of thick square steel beams or steel plates, and can also be made into an integral casting, the integral casting is thick and stable, the vibration displacement generated by high-power load is prevented, the frame structure is relatively light and convenient, the position shifting is facilitated, the frame 10 structure generally takes four square steel beams with thicker sizes as vertical upright posts, a certain distance is reserved between the four upright posts, a transverse square steel beam and a longitudinal square steel beam are fixedly connected, the transverse square steel beam and the longitudinal square beam steel are just cross beams and longitudinal beams of the frame 10, a foot rest is arranged below the frame 10, and four upright posts are generally taken as foot rests,

drum

The turbine main shaft 33 vertically penetrates through the circle center of the turbine disc 30, bolt holes in the turbine disc 30 correspond to bolt holes in the balance tray 34 one by one and are fastened by bolts, and the bolts can be fixedly connected by welding steel bars and the like to prevent the bolts from loosening. The axial center of the turbine main shaft 33 and the center of the grinding ring 2 must be coincident, the gap between the edge of the turbine disk 30 and the grinding ring 2 is generally about one millimeter, and the air pressure generated by the turbine blades 31 below the turbine disk 30 is enough to prevent the powder on the turbine disk 30 from falling into the gap. The center of the pot bottom 42 is provided with a bearing 9, one end of the turbine main shaft 33 penetrates through the bearing 9, the bearing 9 is a main bearing and is generally lubricated by circulating oil, the other main bearing is also arranged at the bottom of the frame and is also lubricated by circulating oil, the two main bearings can ensure the rotation balance of the turbine assembly 3, one end of the turbine main shaft 33 is connected with a transmission device 6, the transmission device 6 is connected with a motor 5, the transmission device 6 is preferably in belt transmission, the turbine main shaft 33 cannot be directly connected with the motor 5 generally, power needs to be indirectly connected and transmitted through the transmission device 6, the motor 5 is vertically and fixedly arranged on the frame 10, and the output shaft of the motor 5 can be arranged upwards or downwards. The grinding roller 1 is arranged on the driving shaft 32 of the turbine disc 30, when the turbine assembly 3 rotates, the grinding roller 1 is driven to roll by the driving shaft 32 on the turbine assembly, and a feeding hole is formed in the center of the pot cover 41.

The grading grid 11 is arranged on the grinding ring, the grading grid 11 is an annular grid which is formed by a plurality of grid sheets at certain intervals and is surrounded along the inner wall of the boiler barrel, the grid sheets of the grading grid 11 are generally distributed in the radial direction in the horizontal direction and can be inclined at a certain angle in the radial direction according to the grinding requirement, the inclination towards the rotation direction of the turbine is large, the inclination in the reverse direction is large, the discharge is fine, the grid sheets of the grading grid 11 are generally inclined inwards by 30-60 degrees in the vertical direction to be beneficial to the falling and back grinding of coarse materials, a volute discharge port 8 is arranged on the periphery of the grading grid, a mesh regulating valve 81 is arranged in the volute discharge port 8, and the aim of regulating the discharge mesh is achieved by regulating the air volume of the volute discharge port 8 through the regulating valve 81. The classification principle is as follows: the high-speed rotating airflow generated by the rotation of the turbine drives the powder to rotate at a high speed, the powder rotating at a high speed has a time difference in the process of passing through the gap of the grading grid 11, the volute-shaped discharge port 8 is opened, the powder can flow towards the gap direction of the grading grid 11, the half size of the powder enters the time difference of the gap, if the time difference is larger than the time difference, the powder cannot pass through, and otherwise, the powder can pass through. Such as: the gap of the grading grid 11 is one millimeter wide, the powder rotating speed is one hundred meters per second, the discharging wind speed of the grading grid 11 is one meter per second, the powder larger than 20 micrometers can not pass through, the powder smaller than 20 micrometers can pass through, if the grid sheet of the grading grid 11 inclines in the direction opposite to the rotating direction of the turbine, the powder discharging wind speed vector is reduced, the powder larger than 10 micrometers can not pass through, and the powder smaller than 10 micrometers can pass through.

The working principle is as follows: the method comprises the steps of opening a volute discharge port in advance, adjusting the air volume of the volute discharge port through an adjusting valve to enable the volute discharge port to meet the requirement of the ore grinding requirement, switching on a power supply, enabling a motor to work, driving a turbine to rotate through a belt, pulling a grinding roller to the inner wall of a grinding ring through centrifugal force, driving the grinding roller to roll along the inner wall of the grinding ring through a driving shaft, sucking mineral aggregate from a feed inlet through a screen after the mineral aggregate reaches a rated rotating speed, enabling the mineral aggregate to be uniformly accumulated on the inner wall of the grinding ring under the centrifugal acceleration of turbine blades to form a material layer, punching and crushing the mineral aggregate into relatively small mineral aggregate particles through the high-speed rolling grinding roller, driving the powder to rotate at high speed through high-speed rotating airflow generated by the rotation of the turbine, enabling the powder to flow towards the gap direction of the grading grid when the high-speed rotating powder passes through the gap of the grading grid, enabling half size of the powder to enter the gap with a time difference, and enabling the powder not to pass through if the time difference is larger than the time difference, otherwise, the user can pass through the device. Other mineral aggregate particles which can not pass through the gap between the grinding roller and the grinding ring are continuously punched and crushed by the grinding roller which rolls at a high speed until the mineral aggregate particles become relatively smaller mineral aggregate particles, the fineness of the powder required by grinding is achieved, and the mineral aggregate particles are taken away by powder conveying equipment through a grading grid to finish grinding work.

The above-mentioned embodiments only represent several embodiments of the present invention, which are described in detail and concrete, but not to be understood as the limitation of the scope of the utility model, it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the spirit of the utility model, which falls into the scope of the utility model, therefore, the scope of the utility model should be determined by the appended claims.

Claims

1. The utility model provides a turbine milling machine, includes that mill rolls (1), grinds ring (2), turbine assembly (3), the pot body (4), motor (5), transmission (6), feed inlet (7), discharge gate (8), bearing (9), frame (10), its characterized in that: the grinding machine is characterized in that a pot body (4) is arranged on the rack (10), the pot body (4) is in a pot shape and consists of a pot barrel (40), a pot cover (41) and a pot bottom (42), a grinding ring (2) is arranged in the pot body (4), the grinding ring (2) is in a ring shape, the outer edge of the grinding ring (2) is tightly attached to the inner wall of the pot barrel (40), a turbine assembly (3) is arranged in the grinding ring (2), the turbine assembly (3) comprises a turbine disc (30), a plurality of turbine blades (31), a driving shaft (32) and a turbine main shaft (33), the turbine disc (30) is in a disc shape and is provided with the plurality of turbine blades (31), the turbine blades (31) are in a strip shape, the large-diameter part of the turbine disc (30) is provided with the plurality of driving shafts (32), and the driving shaft (32) is vertically erected on the turbine disc (30), the center of circle of the turbine disc (30) is provided with a turbine main shaft (33), the disc surface of the turbine disc (30) is perpendicular to the axis of the turbine main shaft (33), the axis of the turbine main shaft (33) is coincident with the center of circle of the grinding ring (2), a bearing (9) is arranged at the center of the pot bottom (42) or the pot cover (41), the turbine main shaft (33) penetrates through the bearing (9), the turbine main shaft (33) is connected with a transmission device (6) or directly connected with a motor (5), the transmission device (6) is connected with the motor (5), the motor (5) is fixedly arranged on the rack (10), the turbine disc (30) is provided with a plurality of grinding rollers (1), the grinding rollers (1) are cylindrical, the center of circle of the cylindrical grinding rollers (1) is provided with a blind hole (16), and the blind hole (16) of the grinding rollers (1) is sleeved with a driving shaft (32), the blind hole (16) of grinding roller (1) is not hard up with drive shaft (32) and cooperates, and when turbine assembly (3) rotated, through drive shaft (32) drive grinding roller (1) roll on it be provided with feed inlet (7) at the center of pot cover (41) or near at the center bottom of pot (42) is provided with discharge gate (8), and the ore grinding requirement: the included angle of ore particles falling between the grinding roller (1) and the grinding ring (2) is smaller than the occlusion included angle.

2. The utility model provides a turbine milling machine, includes that mill rolls (1), grinds ring (2), turbine assembly (3), the pot body (4), motor (5), transmission (6), feed inlet (7), snail discharge gate (80), bearing (9), frame (10), hierarchical bars (11), its characterized in that: the grinding machine is characterized in that a pot body (4) is arranged on the rack (10), the pot body (4) is in a pot shape and consists of a pot barrel (40), a pot cover (41) and a pot bottom (42), a grinding ring (2) is arranged in the pot body (4), the grinding ring (2) is in a ring shape, the outer edge of the grinding ring (2) is tightly attached to the inner wall of the pot barrel (40), a turbine assembly (3) is arranged in the grinding ring (2), the turbine assembly (3) comprises a turbine disc (30), a plurality of turbine blades (31), a driving shaft (32) and a turbine main shaft (33), the turbine disc (30) is in a disc shape and is provided with the plurality of turbine blades (31), the turbine blades (31) are in a strip shape, a plurality of driving shafts (32) are arranged at a great circle of the turbine disc (30), and the driving shaft (32) is vertically erected on the turbine disc (30), the center of a circle of the turbine disc (30) is provided with a turbine main shaft (33), the disc surface of the turbine disc (30) is perpendicular to the axis of the turbine main shaft (33), the axis of the turbine main shaft (33) is coincident with the center of a circle of the grinding ring (2), a bearing (9) is arranged at the center of the pot bottom (42), the turbine main shaft (33) penetrates through the bearing (9), the turbine main shaft (33) is connected with a transmission device (6) or directly connected with a motor (5), the transmission device (6) is connected with the motor (5), the motor (5) is fixedly arranged on the rack (10), the turbine disc (30) is provided with a plurality of grinding rollers (1), the grinding rollers (1) are cylindrical, the center of a circle of the cylindrical grinding rollers (1) is provided with a blind hole (16), and the blind hole (16) of the grinding rollers (1) is sleeved with a driving shaft (32), the blind hole (16) of the grinding roller (1) is in loose fit with the driving shaft (32), when the turbine assembly (3) rotates, the grinding roller (1) is driven to roll by the driving shaft (32) on the turbine assembly, a feeding hole (7) is arranged at the center or near the center of the pot cover (41), a grading grid (11) is arranged on the grinding ring (2), the grading grid (11) is an annular grid formed by a plurality of grid pieces at certain intervals and surrounded along the inner wall of the pot barrel (40), a worm-shaped discharging hole (80) is arranged at the periphery of the grading grid (11), and the ore grinding requirement is as follows: the included angle of ore particles falling between the grinding roller (1) and the grinding ring (2) is smaller than the occlusion included angle.

3. A turbo mill according to claim 1 or claim 2, characterized in that: the bottom of the blind hole (16) of the grinding roller (1) is a concave surface or a plane, and when the blind hole (16) of the grinding roller (1) is a plane, a permanent magnet (17) is arranged in the blind hole.

4. A turbo mill according to claim 1 and claim 2, characterized in that: the driving shaft (32) is composed of a fixed shaft rod (321), a driving bearing (320), a bearing protection pipe (322) or a permanent magnet (17), the driving bearing (320) is sleeved on the bearing protection pipe (322), the fixed shaft rod (321) is sleeved on the driving bearing (320), the permanent magnet (17) is arranged at the top end of the fixed shaft rod (321), the permanent magnet (17) and the permanent magnet (17) arranged in the blind hole (16) of the grinding roller (1) are mutually repelled, and the grinding roller (1) is supported by the repelling force.

5. A turbo mill according to claim 1 or claim 2, characterized in that: turbine main shaft (33) on be provided with balanced tray (34), balanced tray (34) be the disc, have a plurality of bolt hole, the centre of a circle and turbine main shaft (33) fixed connection of balanced tray (34), the axis of the quotation of balanced tray (34) perpendicular and turbine main shaft (33), the bolt hole of balanced tray (34) is parallel with the axis of turbine main shaft (33) turbine disc (30) on, be close to turbine main shaft (33) place and have a plurality of bolt hole, bolt hole and the bolt hole one-to-one on the balanced tray (34).

6. A turbo mill according to claim 1 or claim 2, characterized in that: the grinding roller (1) is an I-shaped grinding roller (101), the I-shaped grinding roller (101) is an I-shaped roller body, and the diameter of two ends of the I-shaped grinding roller is larger than that of the middle section.

7. A turbo mill according to claim 1 and claim 2, characterized in that: a lower bearing (91) is arranged on the frame (10) right below the bearing (9) at the center of the pot bottom (42), and the lower end of the turbine main shaft (33) is matched with the lower bearing (91).

8. A turbo mill according to claim 2, characterized in that: a mesh number regulating valve (81) is arranged in the discharge hole (8).

9. A turbo mill according to claim 2, characterized in that: the grid pieces of the grading grid (11) are distributed radially in the horizontal direction or are inclined at a certain angle relative to the radial direction, and the grid pieces of the grading grid are inclined at a certain angle inwards in the vertical direction.

10. A turbo mill according to claim 1, characterized in that: the grinding ring (2) is provided with a grading groove (12), the grading groove (12) is a vertical cutting groove on the inner side of the annular grinding ring (2), and the grading groove (12) is narrow in inside and wide in outside.