Superfine grinding device for nonmetallic minerals

Abstract

The invention relates to the technical field of crushing equipment, in particular to a nonmetallic mineral superfine crushing device which comprises a crushing box and a discharging structure, the crushing box communicates with the discharging structure, the axis of the crushing box is horizontal, a rolling wheel used for crushing raw materials is rotationally arranged in the crushing box, and the discharging structure is used for discharging the crushed raw materials; by designing the specific extrusion area, the first arc-shaped area and the second arc-shaped area, the crushing process of raw materials can be accurately controlled, the extrusion area is used for rapidly crushing large raw materials, the first arc-shaped area is used for fine crushing, the second arc-shaped area is used for superfine crushing, and the particle size distribution of a final product can be more effectively controlled through the staged crushing process.

Description

Technical Field

[0001] The invention relates to the technical field of pulverizing equipment, in particular to an ultrafine pulverizing device for non-metallic minerals. Background Art

[0002] Ultrafine grinding technology is one of the key technologies in the field of modern powder processing, especially in the non-metallic mineral processing industry. Non-metallic minerals generally include kaolin, talc, graphite, wollastonite, zircon, barite, etc. Due to their unique physical and chemical properties, they are widely used in many industrial fields, such as ceramics, plastics, coatings, papermaking, medicine and cosmetics.

[0003] Existing ultrafine grinding methods for non-metallic minerals generally include blade grinding, hammer grinding, roller grinding, etc., and these grinding methods mainly use high-speed impact or extrusion of the raw materials to complete the grinding work. The degree of raw material grinding cannot be accurately controlled, and its randomness is relatively large. In addition, the raw material grinding work requires a long time and repeated operations to crush the raw materials into powder, and its work efficiency is low. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a non-metallic mineral ultrafine grinding device, and the specific technical solution adopted is:

[0005] The non-metallic mineral ultrafine grinding device comprises a grinding box and a discharging structure, wherein the grinding box is connected to the discharging structure, the axis of the grinding box is horizontal, a roller wheel for grinding raw materials is provided in the grinding box, and the discharging structure is used to discharge the crushed raw materials;

[0006] Among them, the crushing box is composed of a feed port for feeding, an extrusion area for extruding raw materials, a first arc area for primary rolling of raw materials and a second arc area for secondary rolling of raw materials. The roller wheel is coaxial with the crushing box, and the feed port opening faces upward. The distance between the extrusion area and the outer wall of the roller wheel gradually decreases with decreasing height, the distance between the first arc area and the outer wall of the roller wheel gradually decreases along the rotation direction of the roller wheel, and the distance between the second arc area and the outer wall of the roller wheel is constant.

[0007] Furthermore, the roller pressing wheel is hollow inside, a support shaft is coaxially arranged inside the roller pressing wheel, a plurality of rotating rings are rotatably arranged on the support shaft, a plurality of first springs are arranged on the outer wall of each rotating ring, a plurality of push plates are slidably inserted on the circumferential outer wall of the roller pressing wheel, the sliding direction of the push plates is along the radial direction of the roller pressing wheel, one end of the push plate extends outside the roller pressing wheel, and the other end of the push plate extends into the roller pressing wheel and is connected to the first spring;

[0008] Among them, the end of the support shaft passes through the roller wheel and the crushing box and extends beyond the crushing box. The roller wheel rotates on the support shaft. The first spring provides elastic thrust for the push plate. When the push plate follows the roller wheel to rotate to the position of the extrusion zone, the push plate extends and provides downward pressure on the raw material in the extrusion zone.

[0009] Furthermore, a plurality of tooth openings are provided on the first arc-shaped area between two adjacent push plates, the tooth openings are connected to the inside of the roller pressing wheel, the plurality of tooth openings are parallel to each other, a filling plate is slidably provided in each tooth opening, a plurality of filling plates are connected to a base plate, and the base plate is located in the roller pressing wheel;

[0010] Among them, when the tooth mouth is located in the extrusion zone or the first arc zone, the filling plate is located inside the tooth mouth. At this time, the tooth mouth edge position of the outer wall of the rolling wheel crushes the raw material. When the tooth mouth is located in the second arc zone, the end face of the filling plate is coplanar with the outer wall of the rolling wheel, and the outer wall of the rolling wheel forms a complete arc surface.

[0011] Furthermore, a fixing ring is fixedly mounted on the outer wall of the support shaft, and annular grooves are provided on the front and rear sides of the fixing ring, and the annular grooves are composed of a first arc groove and a second arc groove. A plurality of sliding columns are slidably arranged in the annular grooves, and the sliding columns are connected to the base plate by a filling plate. When the sliding column slides in the first arc groove, the filling plate blocks the tooth mouth, and the outer wall of the rolling wheel forms a complete arc surface. When the sliding column slides in the second arc groove, the filling plate slides into the tooth mouth.

[0012] Furthermore, a circular opening is provided on the side wall of the crushing box;

[0013] The discharging structure comprises a discharging barrel connected with the circular opening, a support plate is arranged in the discharging barrel, a rotating shaft is rotatably arranged on the support plate, the rotating shaft is transmission-connected with the roller pressing wheel, and a plurality of fan blades are arranged on the outer wall of the rotating shaft.

[0014] Furthermore, the discharge barrel is in sliding contact with the crushing box, and the roller wheel is connected to the rotating shaft through a transmission structure. The transmission structure includes a plurality of power rods distributed in a ring shape, the power rods are inclined along the axis direction of the rotating shaft, one end of the power rods is rotatably mounted on the rotating shaft, and the other end of the power rods is rotatably mounted on the roller wheel.

[0015] Furthermore, a sliding opening is provided on the discharge cylinder, a sliding column is slidably provided in the sliding opening, and the sliding column is connected to the discharge cylinder via a second spring;

[0016] Among them, an inclined surface is arranged on the slide column. When the slide column slides in the sliding mouth, the shielding area of ​​the sliding mouth on the inclined surface of the slide column changes, and the outside air can enter the discharge barrel through the gap between the sliding mouth and the inclined surface.

[0017] Furthermore, a transmission sleeve is provided on the end face of the roller wheel, the transmission sleeve is sleeved on the outer wall of the support shaft, and the transmission sleeve passes through the crushing box. The end of the support shaft is fixed to the outer wall of the crushing box through a fixing plate, and a motor and a transmission wheel for providing power for the rotation of the transmission sleeve are provided on the fixing plate.

[0018] The advantages of the present invention are:

[0019] By designing a specific extrusion zone, a first arc zone and a second arc zone, the crushing process of the raw material can be accurately controlled. The extrusion zone is used to quickly crush large pieces of raw material, the first arc zone is used for fine crushing, and the second arc zone is used for ultrafine crushing. This staged crushing process can more effectively control the particle size distribution of the final product; compared with the traditional long-term and repeated crushing, the device greatly improves the work efficiency through a continuous and efficient crushing process. The raw material undergoes a complete and continuous crushing cycle from feeding to final discharge, avoiding the problem that the raw material needs to be processed multiple times to reach the required particle size in the traditional method; due to the use of an optimized crushing process, the entire crushing process is smoother and continuous, which not only improves efficiency but also reduces energy consumption. Compared with traditional methods, this continuous crushing method can achieve better crushing effects at lower energy input; in summary, the technical solution of the non-metallic mineral ultrafine crushing device not only solves the problems existing in traditional crushing methods, but also significantly improves crushing efficiency, product quality and economic benefits, and is a major innovation in the field of modern powder processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the middle crushing box;

[0023] Figure 3 yes Figure 2 Schematic diagram of the structure of the medium crushing box;

[0024] Figure 4 yes Figure 3 A schematic cross-sectional structure diagram of ;

[0025] Figure 5 yes Figure 2 Schematic diagram of the enlarged structure of the middle roller pressure wheel;

[0026] Figure 6 yes Figure 5 Schematic diagram of the internal structure of the middle roller;

[0027] Figure 7 yes Figure 6 A schematic diagram of the enlarged structure of the middle support shaft;

[0028] Figure 8 yes Figure 7 A schematic diagram of the enlarged structure of the middle fixing ring;

[0029] Fig. 9 yes Figure 6 Schematic diagram of the enlarged structure of the middle substrate;

[0030] Markings in the accompanying drawings:

[0031] 1. Crushing box; 2. Discharging structure; 3. Feeding port; 4. Extrusion area; 5. First arc area; 6. Second arc area; 7. Roller wheel; 8. Support shaft; 9. Rotating ring; 10. First spring; 11. Push plate; 12. Tooth mouth; 13. Base plate; 14. Filling plate; 15. Fixed ring; 16. First arc groove; 17. Second arc groove; 18. Sliding column; 19. Connecting rod; 20. Discharging barrel; 21. Support plate; 22. Rotating shaft; 23. Fan blade; 24. Power rod; 25. Sliding column; 26. Second spring; 27. Fixed plate; 28. Transmission sleeve; 29. ​​Motor; 30. Transmission wheel. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. This embodiment is written in a progressive manner.

[0035] like Figures 1 to 3 As shown, the non-metallic mineral ultrafine grinding device of the present invention comprises a grinding box 1 and a discharge structure 2, the grinding box 1 is connected to the discharge structure 2, the axis of the grinding box 1 is horizontal, a roller pressing wheel 7 for grinding raw materials is rotatably provided in the grinding box 1, and the discharge structure 2 is used to discharge the crushed raw materials;

[0036] Among them, the crushing box 1 is composed of a feeding port 3 for feeding, an extrusion area 4 for extruding raw materials, a first arc area 5 for primary rolling of raw materials and a second arc area 6 for secondary rolling of raw materials. The rolling wheel 7 is coaxial with the crushing box 1, the feeding port 3 opens upward, the distance between the extrusion area 4 and the outer wall of the rolling wheel 7 gradually decreases with the decrease in height, the distance between the first arc area 5 and the outer wall of the rolling wheel 7 gradually decreases along the rotation direction of the rolling wheel 7, and the distance between the second arc area 6 and the outer wall of the rolling wheel 7 is constant.

[0037] In detail, the distance between the inside of the crushing box 1 and the outer wall of the roller pressing wheel 7 decreases along the direction of the extrusion zone 4, the first arc zone 5 and the second arc zone 6. The crushing box 1 is cylindrical in shape. The feed port 3 is located on the upper left side of the crushing box 1 and is used to feed the raw material into the crushing box 1. The extrusion zone 4 is vertical. As the height decreases, the distance between the extrusion zone 4 and the outer wall of the roller pressing wheel 7 gradually decreases until it reaches a specified value. This area is mainly used to quickly crush larger raw materials into small particles. The distance between the first arc zone 5 and the outer wall of the roller pressing wheel 7 gradually decreases along the rotation direction of the roller pressing wheel 7. This area is used to grind and crush the small particles so that the small particles are finally powdered. The distance between the arc zone 6 and the outer wall of the roller wheel 7 is constant. This area is mainly used for secondary grinding of powdered raw materials to further reduce their shape, thereby achieving an ultrafine state. That is, the raw materials enter from the feed port 3 and are initially crushed in the extrusion zone 4, then are crushed once in the first arc zone 5, and then are crushed twice in the second arc zone 6, thereby completing the ultrafine crushing work. In this process, the roller wheel 7 continuously performs long-term gradual crushing work on the raw materials. The crushing cycle is long, and the crushing work is smooth, continuous and efficient. The crushed raw materials can enter the discharge structure 2 through the gap between the inner wall of the crushing box 1 and the end face of the roller wheel 7 and be discharged through the discharge structure 2.

[0038] It should be pointed out that the distance between the bottom of the extrusion zone 4 and the outer wall of the roller wheel 7 is the maximum value of the distance between the first arc zone 5 and the roller wheel 7, and the minimum distance between the first arc zone 5 and the roller wheel 7 is the constant value between the second arc zone 6 and the roller wheel 7. In this way, the distance between the inner wall of the crushing box 1 and the outer wall of the roller wheel 7 along the rotation direction of the roller wheel 7 gradually decreases, and the variation range of the distance value between the extrusion zone 4 and the outer wall of the roller wheel 7 is the largest, so that larger volumes of raw materials can be quickly crushed, and the variation range of the distance value between the first arc zone 5 and the outer wall of the roller wheel 7 is smaller, so that small particles of raw materials can be crushed, and the distance between the second arc zone 6 and the roller wheel 7 can limit the particle size of the powdered raw materials. At the same time, due to the aggregation of raw materials between the second arc zone 6 and the roller wheel 7, the roller wheel 7 will provide extrusion force between the raw materials, so that the raw materials are squeezed and crushed against each other, thereby realizing ultra-fine processing.

[0039] In actual use, the gap between the end face of the roller wheel 7 and the inner wall of the crushing box 1 can play a screening role, and the ultrafine raw materials can enter the discharge structure 2 through the gap, while the larger particles of raw materials will stay between the roller wheel 7 and the crushing box 1, and because the roller wheel 7 continuously rotates, when the roller wheel 7 carries the raw materials out of the second arc zone 6, the raw materials will re-enter the extrusion zone 4 and continue to perform periodic crushing work in the crushing box 1.

[0040] By designing a specific extrusion zone 4, a first arc zone 5 and a second arc zone 6, the crushing process of the raw material can be accurately controlled. The extrusion zone 4 is used to quickly crush large pieces of raw material, the first arc zone 5 is used for fine crushing, and the second arc zone 6 is used for ultrafine crushing. This staged crushing process can more effectively control the particle size distribution of the final product; compared with the traditional long-term and repeated crushing, the device greatly improves the work efficiency through a continuous and efficient crushing process. The raw material undergoes a complete and continuous crushing cycle from feeding to final discharge, avoiding the problem that the raw material needs to be processed multiple times to reach the required particle size in the traditional method; due to the use of an optimized crushing process, the entire crushing process is smoother and continuous, which not only improves efficiency but also reduces energy consumption. Compared with the traditional method, this continuous crushing method can achieve better crushing effect at a lower energy input; in summary, the technical solution of the non-metallic mineral ultrafine crushing device not only solves the problems existing in the traditional crushing method, but also significantly improves the crushing efficiency, product quality and economic benefits, and is a major innovation in the field of modern powder processing.

[0041] like Figures 5 to 7As shown, the roller pressing wheel 7 is hollow inside, a support shaft 8 is coaxially arranged inside the roller pressing wheel 7, a plurality of rotating rings 9 are rotatably arranged on the support shaft 8, a plurality of first springs 10 are arranged on the outer wall of each rotating ring 9, a plurality of push plates 11 are slidably inserted on the circumferential outer wall of the roller pressing wheel 7, the sliding direction of the push plates 11 is along the radial direction of the roller pressing wheel 7, one end of the push plate 11 extends outside the roller pressing wheel 7, and the other end of the push plate 11 extends into the roller pressing wheel 7 and is connected to the first spring 10;

[0042] Among them, the end of the support shaft 8 passes through the roller wheel 7 and the crushing box 1 and extends outside the crushing box 1. The roller wheel 7 rotates on the support shaft 8. The first spring 10 provides an elastic thrust for the push plate 11. When the push plate 11 follows the roller wheel 7 to rotate to the position of the extrusion area 4, the push plate 11 extends out and provides downward pressure on the raw material in the extrusion area 4.

[0043] In detail, the first spring 10 provides an outward elastic thrust to the push plate 11. When the push plate 11 is separated from the inner wall of the crushing box 1, that is, the push plate 11 is located at the position of the extrusion zone 4, the push plate 11 extends and slides outward. At this time, due to the rotation of the roller pressing wheel 7, the roller pressing wheel 7 will drive the push plate 11 to squeeze the raw materials in the extrusion zone 4 downward, so that the outer wall of the roller pressing wheel 7 and the extrusion zone 4 can directly and effectively squeeze and crush the raw materials, avoiding the outer wall of the roller pressing wheel 7 and the raw materials when the roller pressing wheel 7 rotates alone. Slipping occurs between the rollers 7, resulting in the inability of the roller wheel 7 to provide effective extrusion pressure on the raw material. When the outer end of the push plate 11 contacts the inner wall of the extrusion zone 4, the inner wall of the extrusion zone 4 provides thrust to the push plate 11 and causes the push plate 11 to slide toward the inside of the roller wheel 7. The push plate 11 slides synchronously on the inner wall of the extrusion zone 4. When the push plate 11 follows the roller wheel 7 to move to the first arc zone 5 or the second arc zone 6, the inner wall of the first arc zone 5 and the inner wall of the second arc zone 6 also limit the extrusion of the push plate 11.

[0044] As the push plate 11 slides on the inner wall of the crushing box 1 as it rotates following the roller wheel 7, the push plate 11 can assist in pushing the raw materials on the inner wall of the crushing box 1, so that the raw materials move between the outer wall of the roller wheel 7 and the inner wall of the crushing box 1, thereby realizing the direct and effective extrusion or crushing of the raw materials by the roller wheel 7. At the same time, due to the push of the push plate 11, the raw materials will be squeezed against each other, thereby improving the extrusion and crushing effect between the raw materials. When the roller wheel 7 drives the push plate 11 to rotate, the push plate 11 will pull the swivel 9 to rotate on the support shaft 8 through the first spring 10, and even if the first spring 10 bends due to the elastic force of the first spring 10, the bending elastic force of the first spring 10 can provide elastic force supply to the push plate 11.

[0045] like Figure 6 and Fig. 9As shown, a plurality of tooth openings 12 are provided on the first arc-shaped area 5 between two adjacent push plates 11, the tooth openings 12 are connected to the inside of the roller pressing wheel 7, the plurality of tooth openings 12 are parallel to each other, a filling plate 14 is slidably provided in each tooth opening 12, a base plate 13 is connected to the plurality of filling plates 14, and the base plate 13 is located in the roller pressing wheel 7;

[0046] Among them, when the tooth mouth 12 is located in the extrusion zone 4 or the first arc zone 5, the filling plate 14 is located inside the tooth mouth 12. At this time, the edge of the tooth mouth 12 on the outer wall of the rolling wheel 7 crushes the raw material. When the tooth mouth 12 is located in the second arc zone 6, the end face of the filling plate 14 is coplanar with the outer wall of the rolling wheel 7, and the outer wall of the rolling wheel 7 forms a complete arc surface.

[0047] In detail, by setting the tooth mouth 12, the raw material can be conveniently sheared and crushed through the edge position of the tooth mouth 12, thereby reducing the difficulty of raw material crushing and increasing the raw material crushing speed. When the tooth mouth 12 moves to the position of the second arc zone 6, in order to prevent powdered raw materials from entering the tooth mouth 12, the base plate 13 can push multiple filling plates 14 to move outward and form a complete arc surface on the outer wall of the rolling wheel 7, so that the raw material can be directly crushed for the second time through the outer wall of the rolling wheel 7.

[0048] It should be pointed out that there is a base plate 13 between two adjacent push plates 11, and a plurality of filling plates 14 are arranged on the base plate 13, and the plurality of filling plates 14 are parallel to each other, so that when the base plate 13 moves, the plurality of filling plates 14 can slide smoothly in the plurality of tooth openings 12, and the plurality of filling plates 14 have different lengths, so that the plurality of filling plates 14 can form a complete arc surface on the outer wall of the rolling wheel 7.

[0049] In actual use, since the filling plate 14 can slide in the tooth opening 12 , even if the raw material enters the tooth opening 12 , the filling plate 14 can still push it out.

[0050] like Figures 7 and 8 As shown, a fixing ring 15 is fixedly mounted on the outer wall of the support shaft 8, and annular grooves are provided on the front and rear sides of the fixing ring 15. The annular grooves are composed of a first arc groove 16 and a second arc groove 17. A plurality of sliding posts 18 are slidingly arranged in the annular grooves, and the sliding posts 18 are connected to the base plate 13 through a filling plate 14. When the sliding posts 18 slide in the first arc groove 16, the filling plate 14 blocks the tooth opening 12, and a complete arc surface is formed on the outer wall of the rolling wheel 7. When the sliding posts 18 slide in the second arc groove 17, the filling plate 14 slides into the tooth opening 12.

[0051] In detail, the radius of the first arc groove 16 is greater than the radius of the second arc groove 17. When the roller 7 rotates, it can drive the sliding column 18 to slide in the annular groove through the filling plate 14, the base plate 13 and the connecting rod 19. When the sliding column 18 slides in the first arc groove 16, the sliding column 18 pushes the base plate 13 and the filling plate 14 to move outward, and the outer end of the filling plate 14 extends to the outer wall position of the roller 7, and the outer wall of the roller 7 forms a complete arc surface. When the sliding column 18 slides in the second arc groove 17, the sliding column 18 pulls the filling plate 14 to slide into the tooth mouth 12. At this time, the edge position of the tooth mouth 12 on the outer wall of the roller 7 is exposed.

[0052] like Figure 4 As shown, a circular opening is provided on the side wall of the crushing box 1;

[0053] The discharging structure 2 comprises a discharging cylinder 20 connected with the circular opening, a support plate 21 is arranged in the discharging cylinder 20, a rotating shaft 22 is rotatably arranged on the support plate 21, the rotating shaft 22 is transmission-connected with the roller 7, and a plurality of fan blades 23 are arranged on the outer wall of the rotating shaft 22.

[0054] In detail, the roller wheel 7 can drive the rotating shaft 22 to rotate, thereby driving multiple fan blades 23 to rotate in the discharge barrel 20, and the support plate 21 provides support for the rotating shaft 22. The fan blades 23 can extract the air in the crushing box 1 through the circular mouth, thereby sucking in the ultrafine raw materials after the crushing process in the crushing box 1 and discharging them through the discharge barrel 20 to the external collection device, thereby realizing the output of the raw materials. In addition, this method can prevent the crushed raw materials in the crushing box 1 from being scattered randomly due to the rotation of the roller wheel 7, and is convenient for collecting the raw materials.

[0055] like Figure 4 As shown, the discharge barrel 20 is in sliding contact with the crushing box 1, and the roller wheel 7 is connected to the rotating shaft 22 through a transmission structure. The transmission structure includes a plurality of power rods 24 distributed in a ring shape, and the power rods 24 are inclined along the axis direction of the rotating shaft 22. One end of the power rod 24 is rotatably mounted on the rotating shaft 22, and the other end of the power rod 24 is rotatably mounted on the roller wheel 7.

[0056] In detail, both ends of the power rod 24 are connected to the roller 7 and the rotating shaft 22 respectively through rotating balls. When the roller 7 rotates, the equipment will vibrate. With the help of this vibration, the raw materials between the first arc area 5 and the roller 7 or between the second arc area 6 and the roller 7 with a smaller space can be crushed, thereby improving the raw material crushing effect and crushing efficiency.

[0057] As the roller wheel 7 rotates and the crushing box 1 vibrates, the crushing box 1 vibrates on a vertical plane perpendicular to the axis of the roller wheel 7. To ensure the smooth output of the crushed raw materials, the discharge barrel 20 is in contact with the crushing box 1, so that the vibration of the crushing box 1 has less effect on the discharge barrel 20. At this time, the roller wheel 7 can use multiple power rods 24 to pull the rotating shaft 22 to rotate, thereby providing power for the rotating shaft 22. Due to the vibration of the roller wheel 7, the distance between the roller wheel 7 and the rotating shaft 22 will change. Therefore, it is necessary to tilt the power rod 24, which can provide a buffer space for the vibration of the roller wheel 7, and the roller wheel 7 is connected to the rotating shaft 22 through multiple power rods 24, thereby reducing the effect of vibration on the rotating shaft 22.

[0058] like Figure 4 As shown, the discharge barrel 20 is provided with a sliding opening, a sliding post 25 is slidably provided in the sliding opening, and the sliding post 25 is connected to the discharge barrel 20 via a second spring 26;

[0059] Among them, the slide column 25 is provided with an inclined surface. When the slide column 25 slides in the sliding mouth, the shielding area of ​​the inclined surface on the slide column 25 by the sliding mouth changes, and the outside air can enter the discharge barrel 20 through the gap between the sliding mouth and the inclined surface.

[0060] In detail, the second spring 26 provides an outward elastic thrust for the slide column 25. In the natural state, the end of the slide column 25 blocks the sliding mouth. When the multiple fan blades 23 rotate, the air pressure inside the discharge barrel 20 and the crushing box 1 drops. In order to avoid the crushing box 1 being squeezed and damaged by the air pressure and causing the inner wall of the crushing box 1 to directly contact the roller wheel 7 with friction, the crushing box 1 and the discharge barrel 20 need to be depressurized. At this time, due to the effect of air pressure, the slide column 25 can slide toward the discharge barrel 20, and a gap will be generated between the inclined surface on the slide column 25 and the sliding mouth, so that the outside air can be replenished into the discharge barrel 20 through the gap.

[0061] In actual use, due to the influence of ultrafine raw materials on the gap between the inner wall of the crushing box 1 and the end face of the roller wheel 7, the amount of air flowing into the discharge barrel 20 from the crushing box 1 will change all the time, so the air pressure in the discharge barrel 20 will change at any time. At this time, the structure of the sliding column 25 and the second spring 26 can be used to achieve stable air pressure in the discharge barrel 20.

[0062] like Figure 1 As shown, a transmission sleeve 28 is provided on the end face of the roller wheel 7, and the transmission sleeve 28 is sleeved on the outer wall of the support shaft 8, and the transmission sleeve 28 passes through the crushing box 1. The end of the support shaft 8 is fixed to the outer wall of the crushing box 1 through a fixing plate 27, and the fixing plate 27 is provided with a motor 29 and a transmission wheel 30 for providing power for the rotation of the transmission sleeve 28.

[0063] In detail, the motor 29 is fixed on the fixed plate 27, the transmission wheel 30 is installed on the output end of the motor 29, and the transmission wheel 30 is connected to the transmission sleeve 28 in transmission, so that the motor 29 can provide rotational power for the rolling wheel 7 through the transmission wheel 30 and the transmission sleeve 28, and the fixed plate 27 provides support for the support shaft 8.

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Non-metallic mineral ultrafine grinding device, characterized in that: It includes a crushing box and a discharging structure, the crushing box is connected to the discharging structure, the axis of the crushing box is horizontal, a roller wheel for crushing raw materials is rotatably arranged in the crushing box, and the discharging structure is used to discharge the crushed raw materials; Among them, the crushing box is composed of a feed port for feeding, an extrusion area for extruding raw materials, a first arc area for primary rolling of raw materials and a second arc area for secondary rolling of raw materials. The roller wheel is coaxial with the crushing box, and the feed port opening faces upward. The distance between the extrusion area and the outer wall of the roller wheel gradually decreases with decreasing height, the distance between the first arc area and the outer wall of the roller wheel gradually decreases along the rotation direction of the roller wheel, and the distance between the second arc area and the outer wall of the roller wheel is constant.

2. The non-metallic mineral ultrafine grinding device according to claim 1, characterized in that: The roller pressing wheel is hollow inside, a support shaft is coaxially arranged inside the roller pressing wheel, a plurality of rotating rings are rotatably arranged on the support shaft, a plurality of first springs are arranged on the outer wall of each rotating ring, a plurality of push plates are slidably inserted on the circumferential outer wall of the roller pressing wheel, the sliding direction of the push plates is along the radial direction of the roller pressing wheel, one end of the push plate extends outside the roller pressing wheel, and the other end of the push plate extends into the roller pressing wheel and is connected to the first spring; Among them, the end of the support shaft passes through the roller wheel and the crushing box and extends beyond the crushing box. The roller wheel rotates on the support shaft. The first spring provides elastic thrust for the push plate. When the push plate follows the roller wheel to rotate to the position of the extrusion zone, the push plate extends and provides downward pressure on the raw material in the extrusion zone.

3. The non-metallic mineral ultrafine grinding device according to claim 2 is characterized in that: A plurality of tooth openings are provided on the first arc-shaped area between two adjacent push plates, the tooth openings are connected to the inside of the roller pressing wheel, the plurality of tooth openings are parallel to each other, a filling plate is slidably provided in each tooth opening, a plurality of filling plates are connected to a base plate, and the base plate is located in the roller pressing wheel; Among them, when the tooth mouth is located in the extrusion zone or the first arc zone, the filling plate is located inside the tooth mouth. At this time, the tooth mouth edge position of the outer wall of the rolling wheel crushes the raw material. When the tooth mouth is located in the second arc zone, the end face of the filling plate is coplanar with the outer wall of the rolling wheel, and the outer wall of the rolling wheel forms a complete arc surface.

4. The non-metallic mineral ultrafine grinding device according to claim 3 is characterized in that: A fixing ring is fixedly mounted on the outer wall of the support shaft, and annular grooves are provided on the front and rear sides of the fixing ring. The annular grooves are composed of a first arc groove and a second arc groove. A plurality of sliding posts are slidably arranged in the annular grooves, and the sliding posts are connected to the base plate by a filling plate. When the sliding posts slide in the first arc groove, the filling plate blocks the tooth opening, and the outer wall of the rolling wheel forms a complete arc surface. When the sliding posts slide in the second arc groove, the filling plate slides into the tooth opening.

5. The non-metallic mineral ultrafine grinding device according to claim 4, characterized in that: A circular opening is provided on the side wall of the crushing box; The discharging structure comprises a discharging cylinder connected with the circular opening, a support plate is arranged in the discharging cylinder, a rotating shaft is rotatably arranged on the support plate, the rotating shaft is transmission-connected with the roller pressing wheel, and a plurality of fan blades are arranged on the outer wall of the rotating shaft.

6. The non-metallic mineral ultrafine grinding device according to claim 5, characterized in that: The discharge barrel is in sliding contact with the crushing box, and the roller wheel is connected to the rotating shaft through a transmission structure. The transmission structure includes a plurality of power rods distributed in a ring shape, the power rods are inclined along the axis direction of the rotating shaft, one end of the power rod is rotatably mounted on the rotating shaft, and the other end of the power rod is rotatably mounted on the roller wheel.

7. The non-metallic mineral ultrafine grinding device according to claim 6, characterized in that: The discharge cylinder is provided with a sliding opening, a sliding post is slidably arranged in the sliding opening, and the sliding post is connected to the discharge cylinder via a second spring; Among them, an inclined surface is arranged on the slide column. When the slide column slides in the sliding mouth, the shielding area of ​​the sliding mouth on the inclined surface of the slide column changes, and the outside air can enter the discharge barrel through the gap between the sliding mouth and the inclined surface.

8. The non-metallic mineral ultrafine grinding device according to claim 7, characterized in that: A transmission sleeve is arranged on the end surface of the roller wheel, the transmission sleeve is sleeved on the outer wall of the support shaft, and the transmission sleeve passes through the crushing box. The end of the support shaft is fixed to the outer wall of the crushing box through a fixing plate, and a motor and a transmission wheel for providing power for the rotation of the transmission sleeve are arranged on the fixing plate.

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