Vertical sand mill

Abstract

The invention discloses a vertical sand mill which comprises a rotary power mechanism, a feeding pump, a stirring device and a sand milling cylinder, and the stirring device comprises a hollow main shaft, a disperser and a separator. The disperser comprises a plurality of rotors and a plurality of rod nails, the rod nails are fixed between the upper rotor and the lower rotor through bolts, and the outer side ends of the rod nails protrude out of the outer peripheries of the rotors. By means of the design, when the rotary power mechanism works, the separator can generate centrifugal force, under the action of the centrifugal force, grinding media are accumulated on the outer periphery of the separator, materials are accumulated in the center area of the separator and then discharged outwards, a screen is not needed, and the problem that the screen is blocked does not exist. Meanwhile, the rotor and the rod nails are fastened on the periphery of the main shaft through the bolts in a sleeved mode, the mode that the blades are welded to the main shaft is not adopted, in the rotating process of the rotor and the rod nails, the problem that the rotor and the rod nails are fractured with the main shaft is solved, the service life of the machine is long, the maintenance cost is low, and in the production process, the stability and the safety are good.

Description

Technical Field

[0001] The present invention belongs to the field of sand mills, and particularly relates to a vertical sand mill. Background Art

[0002] A sand mill, also known as a bead mill, is mainly used for grinding slurries (such as inks, coatings, chocolates). Generally, it can be divided into horizontal sand mills, basket sand mills, vertical sand mills, etc. according to its performance. A sand mill mainly consists of a machine body, a grinding cylinder, a sand grinding disc, grinding media, a motor, and a feeding pump. The speed of feeding is controlled by the feeding pump. The materials of the grinding media of this equipment are generally glass, zirconia, tungsten carbide, talc porcelain, SAZ particles, etc.

[0003] In order to prevent grinding media such as zirconia beads from being discharged together with the material to be ground, a sieve is generally installed in the equipment. However, the sieve is prone to clogging, so the sieve needs to be cleaned frequently, which brings great inconvenience to production.

[0004] Furthermore, conventional stirring devices all adopt the method of welding the rotating shaft and the paddle. Although this structure is simple, after long-term use, the paddle will deform and break, which will bring potential safety hazards to production and is not easy to maintain. The welding part is also prone to retaining materials and is not easy to clean, which will cause pollution to the sand grinding of different materials next time.

[0005] Therefore, there is an urgent need for a new technical solution to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a vertical sand mill, which can solve the problems that the sieve of the existing sand mill is prone to clogging and the paddle of the stirring device is prone to breakage.

[0007] The present invention is realized as follows: A vertical sand mill includes a vertical frame, a rotating power mechanism, a feeding pump, a stirring device, and a sand grinding cylinder; the rotating power mechanism, the stirring device, and the sand grinding cylinder are all fixed on the vertical frame, the stirring device extends into the sand grinding cylinder, the feeding pump is used to pump materials into the sand grinding cylinder, and the sand grinding cylinder is provided with a material inlet, a grinding media inlet, and a grinding media outlet; the stirring device includes a hollow main shaft, a disperser, and a separator. An outlet channel is arranged inside the main shaft, and a material outlet is arranged at the top end of the outlet channel. The separator is fixedly sleeved on the outer periphery of the main shaft and is located at the top end inside the sand grinding cylinder. The inside of the separator is communicated with the bottom end of the outlet channel; the disperser is fixedly sleeved on the outer periphery of the main shaft and is located below the separator. The disperser includes a plurality of rotors and a plurality of rod nails. The rod nails are fixed between the upper and lower rotors by bolts, and the outer ends of the rod nails protrude from the outer periphery of the rotors.

[0008] Furthermore, the vertical sand mill of the present application also includes a circulating cooling system, which includes a machine-sealed oil tank. The sand mill cylinder includes a cylinder body, which includes an outer cylinder and an inner cylinder. A cooling cavity is provided between the outer cylinder and the inner cylinder. The outer cylinder is provided with a coolant inlet and a coolant outlet, and the machine-sealed oil tank is respectively connected to the coolant inlet and the coolant outlet through pipes.

[0009] Furthermore, the vertical sand mill of the present application also includes a lifting drive mechanism, and the sanding cylinder also includes an upper cover sealing assembly and a lower cover sealing assembly for respectively sealing the upper and lower ports of the cylinder body, wherein the cylinder body and the upper cover sealing assembly are a detachable structure, and the cylinder body and the lower cover sealing assembly are a fixed connection structure; the cylinder body is transmission-connected to the power output end of the lifting drive mechanism, and the lifting drive mechanism can drive the cylinder body to lift and lower, and then cover or separate from the upper cover sealing assembly.

[0010] Furthermore, the lifting drive mechanism includes a lifting motor, an adjusting screw, an adjusting nut, a transition mounting seat and a barrel mounting seat. The vertical frame is also provided with a vertically arranged slide rail. The lifting motor is transmission-connected to the adjusting screw. The adjusting nut is sleeved on the adjusting screw and transmission-connected to the adjusting screw. The transition mounting seat is fixedly connected to the adjusting nut, the barrel mounting seat is fixedly connected to the transition mounting seat, the barrel is fixed on the barrel mounting seat, and the transition mounting seat is slidably sleeved on the slide rail.

[0011] Furthermore, the lower cover sealing assembly includes a feed connector, which is connected to the feed pump. A one-way ball valve is embedded in the internal cavity of the feed connector, thereby controlling the material to enter the sanding barrel from the feed connector in one direction.

[0012] Furthermore, the rotating power mechanism includes a rotating motor, a driving wheel, a transmission belt and a driven wheel. The rotating shaft of the rotating motor is coaxially connected to the driving wheel, the driven wheel is fixedly sleeved on the outer periphery of the main shaft, and the transmission belt is wound around the driving wheel and the driven wheel. When the rotating motor is working, it can drive the main shaft to rotate.

[0013] Furthermore, the stirring device also includes a rotor pressure plate, which is fixed to the bottom end of the main shaft by bolts and is used to support and lock the rotor.

[0014] Furthermore, the stirring device also includes a bearing seat, an upper bearing pressure cover and a lower bearing pressure cover; the bearing seat is fixed on the vertical frame, the main shaft rotates and passes through the bearing seat, and the upper bearing pressure cover and the lower bearing pressure cover are respectively covered on the top and bottom ends of the bearing seat.

[0015] Furthermore, the vertical sand mill of the present application further includes an electric contact pressure gauge and an electric contact thermometer. The electric contact pressure gauge is used to collect the pressure information inside the inner cylinder and feedback it to the host computer, and the electric contact thermometer is used to collect the discharge temperature and feedback it to the host computer. After analyzing and processing the information received by the host computer, the equipment operation is controlled.

[0016] Furthermore, shock pads are provided at the four corners of the bottom of the vertical frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] The vertical sand mill provided by the present invention is provided with a rotational power mechanism, a feed pump, a stirring device, and a sand grinding cylinder. Among them, the stirring device includes a hollow main shaft, a disperser, and a separator. An outlet channel is provided inside the main shaft, a material outlet is provided at the top end of the outlet channel, and the inside of the separator is communicated with the bottom end of the outlet channel. The disperser includes a plurality of rotors and a plurality of rod nails. The rod nails are fixed between the upper and lower rotors by bolts, and the outer ends of the rod nails protrude from the outer peripheral edge of the rotors. Through the above design, when the rotational power mechanism works, the separator can generate a centrifugal force. Under the action of the centrifugal force, the grinding medium accumulates on the outer peripheral edge of the separator, and the material accumulates in the central area of the separator and then discharges outward. This design can achieve the separation function without a sieve, and there is no problem of sieve blockage. At the same time, the rotors and rod nails of the disperser are respectively sleeved and bolted to the periphery of the main shaft, rather than using the method of welding the blades to the main shaft. During the rotation process of the rotors and rod nails, there will be no problem of breaking with the main shaft. The service life of the machine is long, the maintenance cost is low, and the stability and safety during the production process are good. Description of the Drawings

[0019] Figure 1 is a cross-sectional schematic view of the vertical sand mill provided by the embodiment of the present application;

[0020] Figure 2 is a cross-sectional schematic view of another section of the vertical sand mill provided by the embodiment of the present application;

[0021] Figure 3 is a cross-sectional schematic view of the third section of the vertical sand mill provided by the embodiment of the present application;

[0022] Figure 4 is a top view schematic view of the vertical sand mill provided by the embodiment of the present application;

[0023] Figure 5 is a cross-sectional schematic view of the stirring device and the sand grinding cylinder provided by the embodiment of the present application;

[0024] Figure 6 is a cross-sectional schematic view of another section of the stirring device and the sand grinding cylinder provided by the embodiment of the present application.

[0025] Markings in the figure:

[0026] Vertical frame 1, material outlet 2, material inlet 3, grinding medium inlet 4, main shaft 51, discharge channel 511, disperser 52, rotor 521, rod nails 522, separator 53, rotor pressing plate 54, bearing seat 55, upper bearing gland 56, lower bearing gland 57, mechanical seal oil tank 7, outer cylinder 81, inner cylinder 82, coolant inlet 83, coolant outlet 84, upper cover seal assembly 85, lower cover seal assembly 86, one-way ball valve 87, lifting motor 91, adjusting screw 92, adjusting nut 93, transition mounting seat 94, cylinder mounting seat 95, rotating motor 101, driving wheel 102, drive belt 103, driven wheel 104, shock pad 11. Detailed implementation manners

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] Please refer to Figures 1 to 4 , which shows a vertical sand mill provided in this embodiment, including a vertical frame 1, a rotating power mechanism, a feed pump, a stirring device, a sand grinding cylinder, a circulating cooling system, and a lifting drive mechanism.

[0030] The rotating power mechanism, the stirring device and the sand grinding cylinder are all fixed on the vertical frame 1. The stirring device extends into the sand grinding cylinder. The feeding pump is used to pump materials (such as ink, paint, minerals, chocolate) into the sand grinding cylinder. The feeding pump can adopt pump types such as gear pumps, screw pumps, diaphragm pumps, etc. According to the needs of users, any one of them can be optionally configured for this machine. The sand grinding cylinder is provided with a material inlet 3, a grinding medium inlet 4 and a grinding medium outlet. Among them, the grinding medium can adopt glass beads, zirconia beads, tungsten carbide beads, talc porcelain, SAZ particles, etc.

[0031] Specifically, please refer to Figure 5 and Figure 6 , the stirring device includes a hollow main shaft 51, a disperser 52, a separator 53, a rotor pressing plate 54, a bearing seat 55, an upper bearing gland 56 and a lower bearing gland 57.

[0032] The main shaft 51 is internally provided with a discharge channel 511, and the top end of the discharge channel 511 is provided with a material outlet 2. The separator 52 is fixedly sleeved on the outer peripheral edge of the main shaft 51 and is located at the top end inside the sand grinding cylinder. The inside of the separator 52 is communicated with the bottom end of the discharge channel 511. The separator 52 has a large discharge area and is designed at the top end inside the sand grinding cylinder. Therefore, there is very little grinding medium around the separator 52, and there will be no blockage, ensuring the stability of the long-term operation of the machine, especially when grinding expandable materials, the advantage is more obvious. High speed and variable frequency speed regulation also ensure that there will be no phenomenon of ball leakage.

[0033] The disperser 52 includes a plurality of rotors 521 and a plurality of rod nails 522. Among them, a plurality of rotors 521 are fixedly sleeved on the outer peripheral edge of the main shaft 5 along the axial direction of the main shaft 51 and are located below the separator 53. The rod nails 522 are fixed between the upper and lower two rotors 521 by bolts, and the outer ends of the rod nails 522 protrude from the outer peripheral edge of the rotor 521 to better contact with the material and realize the stirring function. The rod nails 522 are the main working elements of the sand mill, and there are various types available for matching in the design. The machine is equipped with various types of rod nails 522, and the configuration of the rod nails 522 is selected according to the characteristics of the material to obtain higher grinding and dispersion efficiency. During the process of grinding and dispersion, the material flows from one end to the other end, resulting in an inconsistent dynamic distribution density of the grinding medium in the cylinder. Therefore, the wear degrees of each rod nail 522 are not completely the same. In order to give full play to the service life of each piece. During cleaning, color change, and inspection, the installation positions of the rod nails with the largest difference in wear degree can be adjusted until they can no longer be used and then replaced.

[0034] The rotor pressing plate 54 is fixed to the bottom end of the main shaft 51 by bolts and is used to support and lock the rotor 521. The bearing seat 55 is fixed on the vertical frame 1, and the main shaft 51 rotates through the bearing seat 55. The upper bearing gland 56 and the lower bearing gland 57 are respectively covered on the top end and the bottom end of the bearing seat 55.

[0035] Specifically, the circulating cooling system includes a machine-sealed oil tank 7, the sanding cylinder includes a cylinder body, the cylinder body includes an outer cylinder 81 and an inner cylinder 82, the inner cylinder 82 is a replaceable structure, and is easy to replace after wear. The material of the inner cylinder 82 is stainless steel, alloy steel, non-metallic materials, etc. according to user requirements. The cooling of the inner cylinder 82 adopts a double-helix design, and the cooling effect is about 5°C lower than that of the direct-flow type. If the temperature of some heat-sensitive products is not allowed to exceed a certain lower value, then corresponding requirements are put forward for the cooling water temperature, and if necessary, a matching special cooling equipment is used to solve it.

[0036] There is a cooling cavity between the outer cylinder 81 and the inner cylinder 82. The outer cylinder 81 is provided with a coolant inlet 83 and a coolant outlet 84 (the high position is the outlet, the low position is the inlet). The mechanical seal oil tank 7 is connected to the coolant inlet 83 and the coolant outlet 84 through pipelines. In this embodiment, the mechanical seal oil tank 7 is circulated by a HY0.75 magnetic transmission micro gear pump. The following points must be noted when installing and using the mechanical seal oil tank 7: A) The direction of rotation must be as indicated by the arrow, and reversal is not allowed; B) There is no air leakage at the connection point; C) When working for the first time, it should be started and stopped several times continuously until the liquid flows out of the outlet. Lubricating liquid is used as coolant, flushing liquid and sealing liquid; its function is first to lubricate the sealing end face, and secondly to cool and flush; it is called sealing liquid because it always maintains the set pressure of 0.1-0.15MPa during the circulation process, plays a "blocking" role on the sealing end face, and is an important condition to ensure the long-term stable operation of the mechanical seal.

[0037] This machine adopts the design of cooling the outer jacket of the grinding cylinder body, so that the heat generated during operation can be quickly discharged. The water consumption increases or decreases with the water temperature, product fineness requirements, material viscosity, pigment hardness, and grinding medium filling amount. The machine is equipped with two water outlet pipes connected to the open drain tank for visual inspection of the cooling water flow. The minimum diameter of the drain pipe is 1.5 inches, and the cooling water pressure is not less than 2kg / cm2. If the ground material is particularly sensitive to temperature, a refrigeration device should be installed. This machine uses compressed air to increase the back pressure of the mechanical seal to enhance its reliability and the operation of the diaphragm pump. Use an 8mm outer diameter air pipe to connect to the air inlet joint of the pressure regulating valve in the machine. A control valve should be added to the air inlet pipe.

[0038] Furthermore, the sanding cylinder also includes an upper cover sealing component 85 and a lower cover sealing component 86 for sealing the upper and lower ports of the cylinder respectively, wherein the cylinder and the upper cover sealing component 85 are detachable structures, and the cylinder and the lower cover sealing component 86 are fixed connection structures; the cylinder is transmission-connected with the power output end of the lifting drive mechanism, and the lifting drive mechanism can drive the cylinder to lift and lower, and then cover or separate with the upper cover sealing component. When the inside of the cylinder needs to be cleaned, the lifting drive mechanism can drive the cylinder to descend and separate from the upper cover sealing component 85, and then the inside of the cylinder can be thoroughly cleaned.

[0039] In this embodiment, the lifting drive mechanism includes a lifting motor 91, an adjusting screw 92, an adjusting nut 93, a transition mounting seat 94, and a cylinder mounting seat 95. A vertically arranged slide rail 96 is further provided on the vertical frame 1. The lifting motor 91 is in transmission connection with the adjusting screw 92. The adjusting nut 93 is sleeved on the adjusting screw 92 and is in transmission connection with the adjusting screw 92. The transition mounting seat 94 is fixedly connected to the adjusting nut 23, the cylinder mounting seat 95 is fixedly connected to the transition mounting seat 94, the cylinder is fixed on the cylinder mounting seat 95, and the transition mounting seat 94 is slidably sleeved on the slide rail 96. Through the above design, when the lifting motor 91 works, it can drive the cylinder to lift along the slide rail 96.

[0040] The lower cover sealing assembly 86 includes a feed joint, the feed joint is connected to a feed pump, and a one-way ball valve 87 is embedded in the internal cavity of the feed joint, thereby controlling the one-way entry of materials from the feed joint into the sand mill cylinder.

[0041] Specifically, the rotation power mechanism includes a rotation motor 101, a driving wheel 102, a transmission belt 103, and a driven wheel 104. The rotating shaft of the rotation motor 101 is coaxially connected to the driving wheel 102. The driven wheel 104 is fixedly sleeved on the outer peripheral edge of the main shaft 51. The transmission belt 103 is wound around the driving wheel 102 and the driven wheel 104. When the rotation motor 101 works, it can drive the main shaft 51 to rotate.

[0042] In this embodiment, the vertical sand mill of this embodiment is also configured with a PLC controller, a touch screen, an electric contact pressure gauge, and an electric contact thermometer. The machine runs fully automatically. Relevant control parameters can be input on the touch screen, and remote monitoring and data uploading are available. The electric contact pressure gauge is used to collect the pressure information inside the inner cylinder and feedback it to the PLC controller. The electric contact thermometer is used to collect the discharge temperature and feedback it to the PLC controller. After the PLC controller analyzes and processes the received information, it controls the operation of the equipment. Specifically, when the inner cavity of the cylinder is working normally, the pressure is generally below 0.1 Mpa. However, if the material viscosity is too high, the pumping volume is too large, the material is not fully pre-wetted and dispersed, etc., the pressure will rise. To ensure the safe operation of the equipment, the upper limit pressure of this machine is adjusted to 0.25 Mpa. When the pressure inside the cylinder reaches this value, the machine will automatically stop. The electric contact thermometer is installed at the discharge port to monitor the discharge temperature. The maximum temperature is generally set at 60 degrees Celsius at the factory and can be adjusted according to user requirements.

[0043] To make the machine stable and reliable during operation, in this embodiment, shock pads 11 are provided at the four corners of the bottom of the vertical frame 1.

[0044] It should be noted that the grinding medium adapted to the vertical sand mill in this embodiment is a non-metallic medium, such as zirconia, preferably with a 95% content. If there are special requirements for the grinding medium, requirements can be put forward. The diameter of the grinding medium is generally in the range of 0.1 - 0.05 mm. The general matching principle is: for coarser product particle size, coarser medium is selected; for finer product particle size, finer medium is selected.

[0045] The recommended coefficient of the filling amount (filling volume) of the grinding medium in the sand mill is about 60% - 80% of the effective volume of the cylinder. The optimal coefficient should be determined according to process conditions. For example, if the discharge temperature is too high, the filling amount should be reduced; if the discharge temperature is too low, the filling amount can be appropriately increased to improve the grinding efficiency. Here, the high or low discharge temperature is closely related to the temperature and consumption of the cooling water, but the filling amount of the medium is also a factor that cannot be ignored.

[0046] During the use of the grinding medium, it will be worn and broken, resulting in a continuous decrease in the filling coefficient. It should be supplemented and replaced in a timely manner. When replacing, the broken and incomplete parts are removed by screening, and the corresponding new medium is supplemented (wherein, the calculation of the filling mass of the grinding medium = effective volume * bulk density * specific gravity).

[0047] In summary, for the vertical sand mill of this embodiment, when the rotary power mechanism works, it can make the separator 53 generate centrifugal force. Under the action of the centrifugal force, the grinding medium accumulates on the outer periphery of the separator, and the material accumulates in the central area of the separator and then discharges outward. This design can achieve the separation function without a sieve, and there is no problem of sieve blockage. At the same time, the rotor 521 and the rod nails 522 of the disperser 52 are respectively sleeved and bolted to the periphery of the main shaft 51, rather than using the method of welding the paddle to the main shaft 51. During the rotation of the rotor 521 and the rod nails 522, there will be no problem of breaking with the main shaft 51. The service life of the machine is long, the maintenance cost is low, and moreover, the stability and safety during the production process are good. By the rotary power mechanism, the separator 53 can generate centrifugal force. Under the action of the centrifugal force, the grinding medium accumulates on the outer periphery of the separator 53, and the material accumulates in the central area of the separator 53 and then discharges outward. This design can separate the material from the grinding medium without a sieve, and there is no problem of sieve blockage. At the same time, the rotor 521 and the rod nails 522 are respectively sleeved and bolted to the periphery of the main shaft 51, rather than using the method of welding the paddle to the main shaft. During the rotation of the rotor 521 and the rod nails 522, there will be no problem of breaking with the main shaft 51. The service life of the machine is long, the maintenance cost is low, and moreover, the stability and safety during the production process are good.

[0048] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A vertical sand mill, comprising a vertical frame, a rotary power mechanism, a feed pump, a stirring device and a sand grinding cylinder; the rotary power mechanism, the stirring device and the sand grinding cylinder are all fixed on the vertical frame, the stirring device extends into the sand grinding cylinder, the feed pump is used for pumping materials into the sand grinding cylinder, and the sand grinding cylinder is provided with a material inlet, a grinding medium inlet and a grinding medium outlet; characterized in that, The stirring device includes a hollow main shaft, a disperser and a separator. A discharge channel is provided inside the main shaft, and a material outlet is provided at the top of the discharge channel. The separator is fixedly sleeved on the outer periphery of the main shaft and located at the top position inside the sanding tube. The inside of the separator is communicated with the bottom end of the discharge channel. The disperser is fixedly sleeved on the outer periphery of the main shaft and located below the separator. The disperser includes a plurality of rotors and a plurality of rod nails. The rod nails are fixed between the upper and lower rotors by bolts, and the outer ends of the rod nails protrude from the outer periphery of the rotor.

2. The vertical sand mill according to claim 1, characterized in that, It also includes a circulating cooling system, which includes a machine-sealed oil tank. The sanding cylinder includes a cylinder body, which includes an outer cylinder and an inner cylinder. A cooling cavity is provided between the outer cylinder and the inner cylinder. The outer cylinder is provided with a coolant inlet and a coolant outlet. The machine-sealed oil tank is connected to the coolant inlet and the coolant outlet respectively through pipelines.

3. The vertical sand mill according to claim 2, wherein It also includes a lifting drive mechanism, and the sanding cylinder also includes an upper cover sealing assembly and a lower cover sealing assembly for respectively sealing the upper and lower ports of the cylinder body, wherein the cylinder body and the upper cover sealing assembly are a detachable structure, and the cylinder body and the lower cover sealing assembly are a fixed connection structure; the cylinder body is transmission-connected to the power output end of the lifting drive mechanism, and the lifting drive mechanism can drive the cylinder body to lift and lower, and then to cover or separate from the upper cover sealing assembly.

4. The vertical sand mill according to claim 3, characterized in that, The lifting drive mechanism includes a lifting motor, an adjusting screw, an adjusting nut, a transition mounting seat and a barrel mounting seat. The vertical frame is also provided with a vertically arranged slide rail. The lifting motor is transmission-connected with the adjusting screw. The adjusting nut is sleeved on the adjusting screw and transmission-connected with the adjusting screw. The transition mounting seat is fixedly connected with the adjusting nut, the barrel mounting seat is fixedly connected with the transition mounting seat, the barrel is fixed on the barrel mounting seat, and the transition mounting seat is slidably sleeved on the slide rail.

5. The vertical sand mill according to claim 3, characterized in that, The lower cover sealing assembly includes a feed joint, which is connected to the feed pump. A one-way ball valve is embedded in the inner cavity of the feed joint, thereby controlling the material to enter the sanding cylinder from the feed joint in one direction.

6. The vertical sand mill according to claim 1, wherein, The rotary power mechanism includes a rotary motor, a driving wheel, a transmission belt and a driven wheel. The rotating shaft of the rotary motor is coaxially connected to the driving wheel. The driven wheel is fixedly sleeved on the outer periphery of the main shaft. The transmission belt is wound around the driving wheel and the driven wheel. When the rotary motor is working, it can drive the main shaft to rotate.

7. The vertical sand mill according to claim 1, characterized in that, The stirring device also includes a rotor pressure plate, which is fixed to the bottom end of the main shaft by bolts and is used to support and lock the rotor.

8. The vertical sand mill according to claim 1, characterized in that, The stirring device also includes a bearing seat, an upper bearing pressure cover and a lower bearing pressure cover; the bearing seat is fixed on the vertical frame, the main shaft is rotatably inserted into the bearing seat, and the upper bearing pressure cover and the lower bearing pressure cover are respectively covered on the top and bottom ends of the bearing seat.

9. The vertical sand mill according to claim 2, characterized in that, It also includes an electric contact pressure gauge and an electric contact thermometer. The electric contact pressure gauge is used to collect the pressure information inside the inner cylinder and feedback it to the host computer, and the electric contact thermometer is used to collect the discharging temperature and feedback it to the host computer. After analyzing and processing the information received by the host computer, the host computer controls the operation of the equipment.

10. The vertical sand mill according to claim 1, wherein, Shock pads are provided at the four corners of the bottom of the vertical frame.

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