Grinding device for high-performance concrete production and using method thereof

Abstract

The invention belongs to the technical field of ball milling devices, and particularly discloses a grinding device for high-performance concrete production and a using method thereof, and the grinding device comprises a continuous negative pressure material collecting mechanism, a magnetic induction type feeding mechanism, a rack assembly and a speed reducing mechanism. A continuous negative pressure material collecting mechanism is creatively provided, an annular collecting cavity is divided into relatively independent chambers through partition plates, negative pressure is generated when powder passes through the chambers, and the ground powder can be continuously transferred to a collecting area from a coarse grinding area and a fine grinding area through continuous one-way flowing airflow; meanwhile, the invention further provides a magnetic induction type feeding mechanism, the spreading thickness of the materials in the roller is sensed through the magnitude of magnetic force, so that the feeding speed is dynamically controlled, and the materials in the roller are kept in a relatively appropriate range.

Description

Technical Field

[0001] The invention belongs to the technical field of ball milling devices, and specifically refers to a grinding device for high-performance concrete production and a use method thereof. Background Art

[0002] The raw materials of concrete include cement, water, reinforcing agent, aggregate, etc., among which cement has the most critical influence on quality. Ball mill is often used to grind cement. Compared with other grinding methods, ball mill has relatively high efficiency. However, as far as ball mill is concerned, its efficiency can still be optimized and improved.

[0003] Ball mills are usually loaded with materials once and unloaded once after grinding. In order to reduce the number of loading and unloading, more materials are usually loaded at one time. The impact on efficiency is mainly reflected in the following aspects: A: The essence of cement grinding is to place the material between two hard objects that collide and rub against each other. When there is too much material in the drum, there will be a thicker material layer between the abrasive and the drum wall, so there will be a larger buffer between the abrasive and the drum wall, which will affect the grinding effect. B: When there is too little material in the drum, the part where the abrasive directly collides with the drum wall does not contact the material, which also affects the overall grinding efficiency; C: If the ground cement powder is still mixed in the material, this part is repeatedly ground, which is a waste of time and equipment and will also affect the overall grinding efficiency.

[0004] Therefore, the ideal and efficient grinding method should be that the amount of material in the drum needs to be kept within an appropriate range, the ground powder can be discharged in time, and new material can be continuously added. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a high-efficiency grinding device for concrete production that can continuously feed and discharge materials and a method for using the device. Since the material will accumulate at the bottom slightly biased towards the rotation direction in the drum, in order to generate continuous negative pressure at a specific position in the rotating drum and the collecting device, the present invention creatively proposes a continuous negative pressure aggregation mechanism, which divides the annular collection chamber into relatively independent chambers by a partition, and generates negative pressure when the powder passes through the chamber. Through this continuous unidirectional airflow, the ground powder can be continuously transferred from the coarse grinding area and the fine grinding area to the collection area; at the same time, the present invention also proposes a magnetic induction feeding mechanism, which senses the thickness of the material spread in the drum through the size of the magnetic force, thereby dynamically controlling the feeding speed, so that the material in the drum is kept in a relatively suitable range.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a grinding device for high-performance concrete production, including a continuous negative pressure aggregation mechanism, a magnetic induction feeding mechanism, a frame assembly and a reduction mechanism, the frame assembly includes a main base plate and a spindle bracket, the spindle bracket is arranged on the main base plate, the reduction mechanism is provided with a strong magnet bracket, the frame assembly also includes a fence-type bracket, the fence-type bracket is arranged on the main base plate, the continuous negative pressure aggregation mechanism is rotatably arranged on the spindle bracket, and the magnetic induction feeding mechanism is rotatably arranged on the fence-type bracket.

[0007] The continuous negative pressure material collection mechanism comprises a ball mill, a powder collecting assembly and an organ blowing assembly. The ball mill and the powder collecting assembly are coaxially arranged. The powder collecting assembly is on a rotating main shaft bracket, and the organ blowing assembly is arranged in the powder collecting assembly.

[0008] The continuous negative pressure collection mechanism can continuously generate negative pressure at a specific position while continuously rotating, thereby achieving the attraction and collection of the ground powder. By collecting the powder separately, the problem of the ground powder accumulating in the ball mill and affecting the subsequent grinding efficiency can be avoided.

[0009] The ball mill device is composed of a first filter plate, a ball mill housing, a second filter plate, an annular end plate and a circular blind plate. The first filter plate is located inside the ball mill housing and is coaxially arranged with the ball mill housing. A convex ring portion is provided on the outer wall of the ball mill housing. The second filter plate and the circular blind plate are located at one end of the ball mill device, and the annular end plate is located at the other end of the ball mill device. The circular blind plate and the second filter plate are in the same plane. A one-way air inlet is provided on the second filter plate. The annular end plate and the circular blind plate are blind plates without holes.

[0010] During the grinding process, the powder passes through the coarse grinding area and the fine grinding area, and is then collected in the collection area, wherein the powder in the coarse grinding area that can pass through the second filter plate can also directly enter the collection area.

[0011] The powder collecting assembly includes an annular collecting chamber, a hollow supporting shaft and a main shaft bearing. The annular collecting chamber is fixedly connected to the second filter plate. The filter holes on the second filter plate are distributed within the range of the annular collecting chamber. The inner wall of the annular collecting chamber is evenly distributed with exhaust windows in an annular shape. The hollow supporting shaft is arranged in the annular collecting chamber. The main shaft bearing is clamped on the hollow supporting shaft. The main shaft bearing is clamped in the main shaft bracket. Outside the movement range of the organ blowing assembly in the annular collecting chamber, partitions are evenly distributed in an annular shape to divide the annular collecting chamber into fan-shaped areas.

[0012] The accordion blowing assembly includes an accordion blowing sleeve, a soft magnetic ring, a reset spring and a strong magnetic electromagnet. The accordion blowing sleeve is located in an annular collecting chamber, one end of the accordion blowing sleeve is fixedly connected to the annular collecting chamber, and the end of the accordion blowing sleeve fixed to the annular collecting chamber is provided with an exhaust window 2 which coincides with the exhaust window 1. The soft magnetic ring is fixedly connected to the other end of the accordion blowing sleeve, and the accordion blowing sleeve on the outside of the soft magnetic ring is provided with a ventilation port which only allows air to pass in one direction, and the ventilation port is covered by a filter that can block powder. The reset spring is evenly distributed in an annular shape between the soft magnetic ring and the accordion blowing sleeve, and the strong magnetic electromagnet is clamped in the strong magnet bracket. The strong magnetic electromagnet can generate magnetic adsorption force on the soft magnetic ring after being energized.

[0013] During the rotation of the annular collecting chamber, each chamber generates positive pressure and negative pressure in turn under the action of the accordion sleeve. The position where negative pressure is generated is located where the powder material is accumulated, so the powder can be collected. When the other positions are reset and positive pressure is generated, the air is directly discharged through the one-way ventilation port on the accordion sleeve.

[0014] The magnetic induction feeding mechanism includes a feeding component, a rolling support component, a speed adjustment component and a series magnetic induction component. The feeding component is rotatably arranged on a fence-type bracket, the rolling support component is arranged on a main bottom plate, the rolling support component is located at the bottom of the ball milling device, the speed adjustment component is arranged at one end of the feeding component, and the series magnetic induction component array is arranged on the fence-type bracket.

[0015] The magnetic induction feeding mechanism can adaptively adjust the speed of the material fed into the ball mill according to the material inventory in the ball mill, thereby keeping the material inventory in the ball mill always within a certain range, thereby maintaining the grinding efficiency at a high level.

[0016] The feeding assembly includes a feeding channel, a spiral blade, a removable plug and a disc base, the disc base is fixed to the end of the fence-type bracket, one end of the feeding channel is rotatably set in the annular end plate, and the other end of the feeding channel is rotatably set in the disc base, the spiral blade is fixed to the inner wall of the feeding channel, and a hollow blind tube is provided inside the spiral blade, and the removable plug is provided at the end of the feeding channel.

[0017] Due to the existence of the spiral blades, the rotation speed of the feeding channel directly determines the feeding speed of the magnetic induction feeding mechanism toward the ball milling device.

[0018] The rolling support assembly includes a roller base and a supporting roller, wherein the roller base is arranged on the main bottom plate, the supporting roller is rotatably arranged in the roller base, the supporting roller is provided with a groove portion matching the convex ring portion, and the ball mill device is rotatably arranged on the supporting roller.

[0019] The rolling support assembly supports the rolling ball mill device, and through the cooperation of the groove portion and the convex ring portion, the axial position of the ball mill device can be made more stable and controllable.

[0020] The speed regulating assembly includes a friction wheel, a friction plate, a guide bracket, a pre-tightening spring and a pre-tightening electromagnet. The friction wheel is fixedly connected to the feeding channel, the guide bracket is fixedly connected to the disc base, the contour of the friction plate matches the contour of the friction wheel, the friction plate is symmetrically provided with guide columns, the guide columns are slidably arranged in the guide bracket, the pre-tightening spring is sleeved on the guide columns, the pre-tightening spring is arranged between the friction plate and the guide bracket, one part of the pre-tightening electromagnet is arranged on the guide bracket, and the other part of the pre-tightening electromagnet is arranged on the friction plate. The two parts of the pre-tightening electromagnet will generate a repulsive force after being energized, and this repulsive force increases with the increase of current.

[0021] If the friction wheel and the friction plate are not in contact, the ball mill will rotate with the feed channel when it rotates. If the two rotate asynchronously, the maximum driving force of the feed channel is the dynamic friction between the ball mill and the feed channel. By changing the friction between the friction wheel and the friction plate, the combined force of the feed channel can be adjusted, thereby changing the rotation speed of the feed channel and controlling the feed speed.

[0022] The series magnetic induction component includes a sliding rheostat, a sliding part and an induction magnetic block. The series magnetic induction component array is provided with several groups. The sliding rheostat is arranged on a fence-type bracket, the sliding part is slidably arranged on the sliding rheostat, and the induction magnetic block is arranged at the top of the sliding part. Each group of sliding rheostats is connected in series, and the circuit where the sliding rheostat is located is connected in parallel with the circuit where the preload electromagnet is located.

[0023] By connecting two circuits in parallel, the technical purpose of changing the current in the preload electromagnet by changing the resistance of the sliding rheostat can be achieved; the movement of the abrasive in the ball mill is macroscopically uniform and continuous, and by arranging multiple groups of sliding rheostats in an array, the accuracy and stability of the entire feedback circuit can be improved, and the feedback error caused by randomness can be reduced.

[0024] The deceleration mechanism includes a driving motor, a reducer base, a reducer body and a driving assembly. The driving motor is arranged on the main base plate, the reducer base is arranged on the main base plate, the reducer body is arranged on the reducer base, the output shaft of the driving motor and the output shaft of the reducer body are driven by a belt, and the driving assembly is arranged on the main base plate.

[0025] The driving assembly includes a gear shaft bracket, a driving wheel shaft and a driven gear ring. The gear shaft bracket is arranged on the main base plate, and the driving wheel shaft is rotatably arranged in the gear shaft bracket. The pulley portion of the driving wheel shaft is connected to the output shaft of the reducer body through a belt drive. The driven gear ring is clamped on the hollow supporting shaft, and the gear portion of the driving wheel shaft is meshed with the driven gear ring for transmission.

[0026] The present invention also proposes a method for using a grinding device for high-performance concrete production, which mainly includes the following steps: Step 1: Remove the detachable plug and connect the external feed pipe. The unground granular material will enter the feed channel from the external feed pipe. Since part of the space in the feed channel is occupied by the hollow blind pipe, the material can only be accumulated on both sides of the spiral blade. Only when the spiral blade rotates, the material will be transported toward the ball mill, and the speed of transporting the material through the feed channel toward the ball mill is positively correlated with the rotation speed of the spiral blade. Step 2: Start the drive motor at the same time. The drive motor drives the reducer body through belt transmission. After the reducer body decelerates, the drive shaft is rotated through belt transmission. Since the drive shaft and the driven gear ring are meshed, the driven gear ring will also rotate. When the driven gear ring rotates, it will also rotate the annular collection chamber and the ball milling device together. Step 3: When the ball mill rotates, it will carry the internal materials and abrasives to rotate together. The abrasives will hit the grinding materials during the process of rising and falling, and convert them into powder. The inside of the first filter plate is the coarse grinding area, the area between the first filter plate and the ball mill shell is the fine grinding area, and the annular collection chamber is the collection area. The materials pass through the coarse grinding area, fine grinding area and collection area in turn. Step 4: During the rotation of the annular collecting chamber, the energized strong magnetic electromagnet will overcome the elastic force of the reset spring and adsorb the soft magnetic ring, so that the reset spring near the strong magnetic electromagnet is in a compressed state. During this process, the position where the soft magnetic ring in the annular collecting chamber is adsorbed will generate negative pressure, thereby attracting the powder that can pass through the second filter plate in the fine grinding area and the coarse grinding area to the collection area, and the compressed air inside the accordion blowing sleeve is discharged through the exhaust window 2 and the exhaust window 1; since the accordion blowing sleeve is continuously rotating and the strong magnetic electromagnet is fixed, the accordion blowing sleeve is actually undergoing periodic local compression, and through the rotation of the accordion blowing sleeve itself, the position where the negative pressure is generated can be relatively stable with the main bottom plate, so that continuous negative pressure can be generated at the position corresponding to the strong magnetic electromagnet; since the annular collecting chamber is evenly distributed with partitions that divide the annular collecting chamber into fan-shaped areas, the deformation of the soft magnetic ring generates negative pressure in different chambers, and when the soft magnetic ring is reset after being away from the strong magnetic electromagnet, the excess air can be discharged through the one-way ventilation port on the accordion blowing sleeve; Step 5: The ground powder can be collected in the annular collection chamber by continuously generating negative pressure; Step 6: One end of the feed channel is installed in the ball mill, and there is friction between the two. Therefore, the speed at which the feed channel rotates with the ball mill depends on the resistance of the speed regulating component. When the rotation speed of the ball mill is stable, the height at which the abrasive is lifted is also stable. However, since the abrasive can roll, the material is always between the ball mill and the abrasive. In other words, when the material in the ball mill increases, the distance between the abrasive and the induction magnetic block becomes farther when the abrasive is lifted to the same height. At this time, the height at which the induction magnetic block can be attracted to slide is lower, and the resistance of the sliding rheostat becomes larger. At this time, the current in the preload electromagnet increases, and the friction between the friction wheel and the friction plate increases, thereby reducing the rotation speed of the feed channel, that is, reducing the feeding speed toward the ball mill; When the material in the ball mill is reduced, the distance between the abrasive and the induction magnet becomes closer when it is lifted to the same height. At this time, the induction magnet can be attracted to slide at a higher height and the resistance of the sliding rheostat is smaller. At this time, the current in the preload electromagnet decreases, and the friction between the friction wheel and the friction plate decreases, thereby increasing the rotation speed of the feed channel, that is, increasing the feed speed into the ball mill.

[0027] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The continuous negative pressure collection mechanism can continuously generate negative pressure at a specific position while continuously rotating, thereby achieving the attraction and collection of the ground powder. By collecting the ground powder separately, the problem of the ground powder accumulating in the ball mill and affecting the subsequent grinding efficiency can be avoided.

[0028] (2) During the grinding process, the powder passes through the coarse grinding area and the fine grinding area, and is then collected in the collection area. The powder in the coarse grinding area that can pass through the second filter plate can also directly enter the collection area.

[0029] (3) During the rotation of the annular collection chamber, each chamber generates positive and negative pressure in turn under the action of the accordion sleeve. The position where the negative pressure is generated is located at the position where the powder material is accumulated, so the powder can be collected. When the other positions are reset and positive pressure is generated, the air is directly discharged through the one-way ventilation port on the accordion sleeve.

[0030] (4) The magnetic induction feeding mechanism can adaptively adjust the speed of the material fed into the ball mill according to the material inventory in the ball mill, thereby keeping the material inventory in the ball mill always within a certain range, thereby maintaining the grinding efficiency at a high level.

[0031] (5) Due to the presence of the spiral blades, the rotation speed of the feeding channel directly determines the feeding speed of the magnetic induction feeding mechanism toward the ball mill.

[0032] (6) The rolling support assembly supports the rolling ball mill device, and through the cooperation of the groove portion and the convex ring portion, the axial position of the ball mill device can be made more stable and controllable.

[0033] (7) If the friction wheel and the friction plate are not in contact, the ball mill will rotate with the feed channel. If the two rotate asynchronously, the maximum driving force of the feed channel is the dynamic friction between the ball mill and the feed channel. By changing the friction between the friction wheel and the friction plate, the combined force of the feed channel can be adjusted, thereby changing the rotation speed of the feed channel and controlling the feed speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A three-dimensional diagram of a grinding device for high-performance concrete production proposed by the present invention; Figure 2 A front view of a grinding device for high performance concrete production proposed by the present invention; Figure 3 A left side view of a grinding device for high performance concrete production proposed by the present invention; Figure 4 A top view of a grinding device for high performance concrete production proposed by the present invention; Figure 5 for Figure 3 A cross-sectional view along the cutting line AA; Figure 6 for Figure 5 A cross-sectional view along the cutting line BB; Figure 7 An exploded schematic diagram of a grinding device for high performance concrete production proposed by the present invention; Figure 8 for Figure 5 A partial enlarged view of point Ⅰ in the middle; Fig. 9 for Figure 5 A partial enlarged view of the middle II; Fig.10 for Figure 5 A partial enlarged view of the middle part III; Fig.11 for Figure 6 A partial enlarged view of the middle IV; Fig.12 It is the circuit diagram of the magnetic induction feeding mechanism.

[0035] Among them, 1. continuous negative pressure collection mechanism, 2. magnetic induction feeding mechanism, 3. frame assembly, 4. speed reduction mechanism, 5. ball milling device, 6. powder collecting assembly, 7. accordion blowing assembly, 8. first filter plate, 9. ball mill housing, 10. second filter plate, 11. annular end plate, 12. circular blind plate, 13. annular collecting chamber, 14. hollow support shaft, 15. main shaft bearing, 16. accordion blowing sleeve, 17. soft magnetic ring, 18. reset spring, 19. strong magnetic electromagnet, 20. convex ring part, 21. exhaust window one, 22. exhaust window two, 23. feeding assembly, 24. rolling support assembly, 25. speed adjustment assembly, 26. series magnetic induction assembly, 2 7. Feed channel, 28. Spiral blade, 29. Removable plug, 30. Disc base, 31. Roller base, 32. Support roller, 33. Friction wheel, 34. Friction plate, 35. Guide bracket, 36. Preload spring, 37. Preload electromagnet, 38. Sliding rheostat, 39. Sliding part, 40. Induction magnetic block, 42. Hollow blind tube, 43. Groove part, 44. Guide column, 45. Main bottom plate, 46. Spindle bracket, 47. Fence bracket, 48. Strong magnet bracket, 49. Driving motor, 50. Reducer base, 51. Reducer body, 52. Driving assembly, 53. Gear shaft bracket, 54. Driving wheel shaft, 55. Driven gear ring.

[0036] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described 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; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions 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 device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0039] like Figure 1 to Figure 11As shown, the present invention proposes a grinding device for high-performance concrete production, including a continuous negative pressure aggregate mechanism 1, a magnetic induction feeding mechanism 2, a frame assembly 3 and a reduction mechanism 4, the frame assembly 3 includes a main base plate 45 and a spindle bracket 46, the spindle bracket 46 is arranged on the main base plate 45, the reduction mechanism 4 is provided with a strong magnet bracket 48, the frame assembly 3 also includes a fence bracket 47, the fence bracket 47 is arranged on the main base plate 45, the continuous negative pressure aggregate mechanism 1 is rotatably arranged on the spindle bracket 46, and the magnetic induction feeding mechanism 2 is rotatably arranged on the fence bracket 47.

[0040] The continuous negative pressure material collection mechanism 1 comprises a ball mill 5 , a powder collecting assembly 6 and an organ blowing assembly 7 . The ball mill 5 and the powder collecting assembly 6 are coaxially arranged. The powder collecting assembly 6 rotates on a main shaft bracket 46 , and the organ blowing assembly 7 is arranged in the powder collecting assembly 6 .

[0041] The continuous negative pressure collection mechanism 1 can continuously generate negative pressure at a specific position while continuously rotating, thereby achieving the attraction and collection of the ground powder. By collecting the ground powder separately, the problem of the ground powder accumulating in the ball mill 5 and affecting the subsequent grinding efficiency can be avoided.

[0042] The ball mill device 5 is composed of a first filter plate 8, a ball mill housing 9, a second filter plate 10, an annular end plate 11 and a circular blind plate 12. The first filter plate 8 is located inside the ball mill housing 9 and is coaxially arranged with the ball mill housing 9. A convex ring portion 20 is provided on the outer wall of the ball mill housing 9. The second filter plate 10 and the circular blind plate 12 are located at one end of the ball mill device 5, and the annular end plate 11 is located at the other end of the ball mill device 5. The circular blind plate 12 and the second filter plate 10 are in the same plane. The second filter plate 10 is provided with a one-way air inlet. The annular end plate 11 and the circular blind plate 12 are blind plates without holes.

[0043] During the grinding process, the powder passes through the coarse grinding area and the fine grinding area, and is then collected in the collection area. The powder in the coarse grinding area that can pass through the second filter plate 10 can also directly enter the collection area.

[0044] The powder collecting assembly 6 includes an annular collecting chamber 13, a hollow supporting shaft 14 and a main shaft bearing 15. The annular collecting chamber 13 is fixedly connected to the second filter plate 10. The filter holes on the second filter plate 10 are distributed within the range of the annular collecting chamber 13. The inner wall of the annular collecting chamber 13 is evenly distributed with exhaust windows 21 in an annular manner. The hollow supporting shaft 14 is arranged in the annular collecting chamber 13. The main shaft bearing 15 is snap-fitted on the hollow supporting shaft 14. The main shaft bearing 15 is snap-fitted in the main shaft bracket 46. Outside the movement range of the organ blowing assembly 7 in the annular collecting chamber 13, partitions that divide the annular collecting chamber 13 into fan-shaped areas are evenly distributed in an annular manner.

[0045] The organ blowing assembly 7 includes an organ blowing sleeve 16, a soft magnetic ring 17, a reset spring 18 and a strong magnetic electromagnet 19. The organ blowing sleeve 16 is located in the annular collecting chamber 13. One end of the organ blowing sleeve 16 is fixedly connected to the annular collecting chamber 13. The end of the organ blowing sleeve 16 fixed to the annular collecting chamber 13 is provided with an exhaust window 22 that coincides with an exhaust window 1 21. The soft magnetic ring 17 is fixedly connected to the other end of the organ blowing sleeve 16. The organ blowing sleeve 16 outside the soft magnetic ring 17 is provided with a ventilation port that only allows air to pass in one direction. The ventilation port is covered by a filter that can block powder. The reset spring 18 is evenly distributed in a ring shape between the soft magnetic ring 17 and the organ blowing sleeve 16. The strong magnetic electromagnet 19 is snap-fitted into the strong magnet bracket 48. The strong magnetic electromagnet 19 can generate magnetic adsorption force on the soft magnetic ring 17 after being energized.

[0046] During the rotation of the annular collecting chamber 13, each chamber generates positive pressure and negative pressure in turn under the action of the accordion sleeve 16. The position where negative pressure is generated is located at the position where the powder material is accumulated, so the powder can be collected. When the other positions are reset and positive pressure is generated, the air is directly discharged through the one-way ventilation port on the accordion sleeve 16.

[0047] The magnetic induction feeding mechanism 2 includes a feeding component 23, a rolling support component 24, a speed adjustment component 25 and a series magnetic induction component 26. The feeding component 23 is rotatably arranged on a fence-type bracket 47, the rolling support component 24 is arranged on the main bottom plate 45, the rolling support component 24 is located at the bottom of the ball mill 5, the speed adjustment component 25 is arranged at one end of the feeding component 23, and the series magnetic induction component 26 array is arranged on the fence-type bracket 47.

[0048] The magnetic induction feeding mechanism 2 can adaptively adjust the speed of the material fed into the ball mill 5 according to the material inventory in the ball mill 5, thereby keeping the material inventory in the ball mill 5 always within a certain range, thereby maintaining the grinding efficiency at a high level.

[0049] The feeding assembly 23 includes a feeding channel 27, a spiral blade 28, a removable plug 29 and a disc base 30. The disc base 30 is fixedly connected to the end of the fence-type bracket 47. One end of the feeding channel 27 is rotatably disposed in the annular end plate 11, and the other end of the feeding channel 27 is rotatably disposed in the disc base 30. The spiral blade 28 is fixedly connected to the inner wall of the feeding channel 27. A hollow blind tube 42 is disposed inside the spiral blade 28. The removable plug 29 is disposed at the end of the feeding channel 27.

[0050] Due to the existence of the spiral blades 28 , the rotation speed of the feeding channel 27 directly determines the feeding speed of the magnetic induction feeding mechanism 2 toward the ball mill 5 .

[0051] The rolling support assembly 24 includes a roller base 31 and a support roller 32. The roller base 31 is arranged on the main base plate 45. The support roller 32 is rotatably arranged in the roller base 31. The support roller 32 is provided with a groove portion 43 matching the convex ring portion 20. The ball mill device 5 is rollingly arranged on the support roller 32.

[0052] The rolling support assembly 24 supports the rolling ball mill 5 , and through the cooperation between the groove portion 43 and the convex ring portion 20 , the axial position of the ball mill 5 can be made more stable and controllable.

[0053] The speed regulating assembly 25 includes a friction wheel 33, a friction plate 34, a guide bracket 35, a pre-tightening spring 36 and a pre-tightening electromagnet 37. The friction wheel 33 is fixedly connected to the feeding channel 27, the guide bracket 35 is fixedly connected to the disc base 30, the contour of the friction plate 34 matches the contour of the friction wheel 33, the friction plate 34 is symmetrically provided with guide columns 44, the guide columns 44 are slidably arranged in the guide bracket 35, the pre-tightening spring 36 is sleeved on the guide columns 44, the pre-tightening spring 36 is arranged between the friction plate 34 and the guide bracket 35, one part of the pre-tightening electromagnet 37 is arranged on the guide bracket 35, and the other part of the pre-tightening electromagnet 37 is arranged on the friction plate 34. The two parts of the pre-tightening electromagnet 37 will generate a repulsive force after being energized, and this repulsive force increases with the increase of current.

[0054] If the friction wheel 33 and the friction plate 34 are not in contact, the ball mill 5 will rotate with the feed channel 27. If the two rotate asynchronously, the maximum driving force of the feed channel 27 is the dynamic friction between the ball mill 5 and the feed channel 27. By changing the friction between the friction wheel 33 and the friction plate 34, the combined force of the feed channel 27 can be adjusted, thereby changing the rotation speed of the feed channel 27 and controlling the feed speed.

[0055] The series magnetic induction component 26 includes a sliding rheostat 38, a sliding portion 39 and an induction magnetic block 40. The series magnetic induction component 26 array is provided with several groups. The sliding rheostat 38 is provided on a fence-type bracket 47, the sliding portion 39 is slidably provided on the sliding rheostat 38, and the induction magnetic block 40 is provided at the top of the sliding portion 39. Each group of sliding rheostats 38 is connected in series, and the circuit where the sliding rheostat 38 is located is connected in parallel with the circuit where the preload electromagnet 37 is located.

[0056] By connecting two circuits in parallel, the technical purpose of changing the current in the preload electromagnet 37 by changing the resistance of the sliding rheostat 38 can be achieved; the movement of the abrasive in the ball mill 5 is macroscopically uniform and continuous, and by arranging multiple groups of sliding rheostats 38 in an array, the accuracy and stability of the entire feedback circuit can be improved, and the feedback error caused by randomness can be reduced.

[0057] The reduction mechanism 4 includes a driving motor 49, a reducer base 50, a reducer body 51 and a driving assembly 52. ​​The driving motor 49 is arranged on the main base plate 45, the reducer base 50 is arranged on the main base plate 45, the reducer body 51 is arranged on the reducer base 50, the output shaft of the driving motor 49 and the output shaft of the reducer body 51 are driven by a belt, and the driving assembly 52 is arranged on the main base plate 45.

[0058] The driving assembly 52 includes a gear shaft bracket 53, a driving wheel shaft 54 ​​and a driven gear ring 55. The gear shaft bracket 53 is arranged on the main base plate 45, and the driving wheel shaft 54 ​​is rotatably arranged in the gear shaft bracket 53. The pulley portion of the driving wheel shaft 54 ​​is connected to the output shaft of the reducer body 51 through a belt drive. The driven gear ring 55 is engaged with the hollow support shaft 14, and the gear portion of the driving wheel shaft 54 ​​is meshed with the driven gear ring 55 for transmission.

[0059] like Fig.12 As shown, M represents the pre-tightening electromagnet 37, R represents the sliding rheostat 38, each group of sliding rheostats 38 is connected in series, and the sliding rheostat 38 is connected in parallel with the pre-tightening electromagnet 37. This scheme adopts a power supply with constant power, and the power of the power supply will be distributed by the electrical appliances in the two circuits (each R is regarded as a whole), that is, P=P1+P2; under the premise that the total power remains unchanged, when the resistance of the sliding rheostat 38 increases, the power of the branch where the sliding rheostat 38 is located decreases, and the power and current of the branch where the pre-tightening electromagnet 37 are located increase. In the extreme case: when the circuit where the sliding rheostat 38 is located is open-circuited, the current in the pre-tightening electromagnet 37 increases to the maximum; when the resistance of the sliding rheostat 38 decreases, the power of the branch where the sliding rheostat 38 is located increases, and the power and current of the branch where the pre-tightening electromagnet 37 are located decrease. In the extreme case: when the circuit where the sliding rheostat 38 is located is short-circuited, the current in the pre-tightening electromagnet 37 is reduced to zero.

[0060] When in use, the user first needs to remove the detachable plug 29 and connect the external feed pipe, and the unground granular material will enter the feed channel 27 from the external feed pipe. Since part of the space in the feed channel 27 is occupied by the hollow blind tube 42, the material can only be accumulated on both sides of the spiral blade 28. Only when the spiral blade 28 rotates, the material will be transported toward the ball mill 5, and the speed of transporting the material through the feed channel 27 toward the ball mill 5 is positively correlated with the rotation speed of the spiral blade 28. At the same time, the driving motor 49 is started, and the driving motor 49 drives the reducer body 51 through the belt transmission. After the reducer body 51 is decelerated, the driving shaft 54 ​​is rotated through the belt transmission. Since the driving shaft 54 ​​is meshed with the driven gear ring 55, the driven gear ring 55 will also rotate. When the driven gear ring 55 rotates, it will also rotate the annular collection chamber 13 and the ball mill 5 together. The ball mill 5 rotates with the material and the abrasive inside. The abrasive rises and then hits the grinding material when it falls, converting it into powder. The inside of the first filter plate 8 is the coarse grinding area, the area between the first filter plate 8 and the ball mill housing 9 is the fine grinding area, and the annular collection chamber 13 is the collection area. The material passes through the coarse grinding area, the fine grinding area and the collection area in sequence. During the rotation of the annular collecting chamber 13, the energized strong magnetic electromagnet 19 will overcome the elastic force of the reset spring 18 and adsorb the soft magnetic ring 17, so that the reset spring 18 located near the strong magnetic electromagnet 19 is in a compressed state. During this process, a negative pressure will be generated at the position where the soft magnetic ring 17 in the annular collecting chamber 13 is adsorbed, thereby attracting the powder in the fine grinding area and the coarse grinding area that can pass through the second filter plate 10 to the collection area, and the compressed air inside the accordion blowing sleeve 16 will be discharged through the exhaust window 2 22 and the exhaust window 1 21; since the accordion blowing sleeve 16 is continuously rotating, and the strong magnetic electromagnet 19 is fixed, Therefore, the accordion blowing sleeve 16 is actually undergoing periodic local compression, and the rotation of the accordion blowing sleeve 16 itself can make the position where the negative pressure is generated relatively stable with the main bottom plate 45, so that a continuous negative pressure can be generated at the position corresponding to the strong magnetic electromagnet 19; because the annular collecting chamber 13 is evenly distributed with partitions that divide the annular collecting chamber 13 into fan-shaped areas, the deformation of the soft magnetic ring 17 generates negative pressure in different chambers, and when the soft magnetic ring 17 is reset after being away from the strong magnetic electromagnet 19, the excess air can be discharged through the one-way ventilation port on the accordion blowing sleeve 16; The ground powder can be collected in the annular collecting chamber 13 by continuously generating negative pressure, thereby preventing excessive accumulation of ground powder inside the ball mill 5, thereby affecting the grinding efficiency of the remaining materials.

[0061] One end of the feed channel 27 is installed in the ball mill 5, and there is friction between the two. Therefore, the speed at which the feed channel 27 rotates with the ball mill 5 depends on the resistance of the speed regulating component 25. When the rotation speed of the ball mill 5 is stable, the height at which the abrasive is lifted is also stable. However, since the abrasive can roll, the material is always located between the ball mill 5 and the abrasive. In other words, when the material in the ball mill 5 increases, the distance between the abrasive and the induction magnetic block 40 becomes farther when the abrasive is lifted to the same height. At this time, the height at which the induction magnetic block 40 can be attracted to slide is lower, and the resistance of the sliding rheostat 38 becomes larger. Since the power supply is constant, the current in the pre-tightening electromagnet 37 increases, and the friction between the friction wheel 33 and the friction plate 34 increases, thereby reducing the rotation speed of the feed channel 27, that is, reducing the feeding speed toward the ball mill 5 (in extreme cases, the circuit where the sliding rheostat 38 is located is disconnected, and the current in the pre-tightening electromagnet 37 increases to the maximum); When the material in the ball mill 5 decreases, the distance between the abrasive and the induction magnet 40 becomes closer when the abrasive is lifted to the same height. At this time, the induction magnet 40 can be attracted to slide at a higher height and the resistance of the sliding rheostat 38 is smaller. Since the power of the power supply is constant, the current in the preload electromagnet 37 decreases and the friction between the friction wheel 33 and the friction plate 34 decreases, thereby increasing the rotation speed of the feed channel 27, that is, increasing the feed speed toward the ball mill 5 (in extreme cases, the circuit where the sliding rheostat 38 is located is short-circuited, and the current in the preload electromagnet 37 is reduced to zero).

[0062] Through the negative feedback regulation circuit, the feeding speed of the feeding assembly 23 can be adjusted according to the material inventory in the ball mill 5, thereby avoiding excessive or insufficient material inventory in the ball mill 5 and affecting the grinding efficiency.

[0063] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0064] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A grinding device for high-performance concrete production, comprising a frame assembly (3) and a speed reduction mechanism (4), wherein the frame assembly (3) comprises a main base plate (45) and a main shaft support (46), wherein the main shaft support (46) is arranged on the main base plate (45), and characterized in that: It also includes a continuous negative pressure material collection mechanism (1) and a magnetic induction material feeding mechanism (2), the speed reduction mechanism (4) is provided with a strong magnet bracket (48), the frame assembly (3) also includes a fence bracket (47), the fence bracket (47) is arranged on the main bottom plate (45), the continuous negative pressure material collection mechanism (1) is rotatably arranged on the main shaft bracket (46), and the magnetic induction material feeding mechanism (2) is rotatably arranged on the fence bracket (47); The continuous negative pressure material collection mechanism (1) comprises a ball mill (5), a powder collecting assembly (6) and an organ blowing assembly (7); the ball mill (5) and the powder collecting assembly (6) are coaxially arranged; the powder collecting assembly (6) is on a rotating spindle support (46); and the organ blowing assembly (7) is arranged in the powder collecting assembly (6); The magnetic induction feeding mechanism (2) comprises a feeding component (23), a rolling support component (24), a speed regulating component (25) and a serial magnetic induction component (26); the feeding component (23) is rotatably mounted on a fence-type bracket (47); the rolling support component (24) is mounted on a main bottom plate (45); the rolling support component (24) is located at the bottom of the ball mill (5); the speed regulating component (25) is mounted at one end of the feeding component (23); and the serial magnetic induction component (26) is arrayed on the fence-type bracket (47); The ball mill device (5) comprises a first filter plate (8), a ball mill housing (9), a second filter plate (10), an annular end plate (11) and a circular blind plate (12); the first filter plate (8) is located inside the ball mill housing (9) and is coaxially arranged with the ball mill housing (9); a convex ring portion (20) is provided on the outer wall of the ball mill housing (9); the second filter plate (10) and the circular blind plate (12) are located at one end of the ball mill device (5); the annular end plate (11) is located at the other end of the ball mill device (5); the circular blind plate (12) and the second filter plate (10) are in the same plane; the second filter plate (10) is provided with a one-way air inlet; the annular end plate (11) and the circular blind plate (12) are blind plates without holes.

2. A grinding device for high performance concrete production according to claim 1, characterized in that: The powder collecting assembly (6) comprises an annular collecting chamber (13), a hollow supporting shaft (14) and a main shaft bearing (15); the annular collecting chamber (13) is fixedly connected to the second filter plate (10); the filter holes on the second filter plate (10) are distributed within the range of the annular collecting chamber (13); the inner wall of the annular collecting chamber (13) is evenly distributed with exhaust windows (21) in an annular manner; the hollow supporting shaft (14) is disposed in the annular collecting chamber (13); the main shaft bearing (15) is snap-fitted on the hollow supporting shaft (14); the main shaft bearing (15) is snap-fitted in the main shaft bracket (46); and partitions are evenly distributed in an annular manner outside the movement range of the organ blowing assembly (7) in the annular collecting chamber (13) for dividing the annular collecting chamber (13) into fan-shaped areas.

3. A grinding device for high performance concrete production according to claim 2, characterized in that: The organ blowing assembly (7) comprises an organ blowing sleeve (16), a soft magnetic ring (17), a return spring (18) and a strong magnetic electromagnet (19); the organ blowing sleeve (16) is located in the annular collecting chamber (13); one end of the organ blowing sleeve (16) is fixedly connected to the annular collecting chamber (13); an exhaust window 2 (22) overlapping with an exhaust window 1 (21) is provided at the end of the organ blowing sleeve (16) fixedly connected to the annular collecting chamber (13); the soft magnetic ring (17) is fixedly connected to the annular collecting chamber (13); and the return spring (18) and the strong magnetic electromagnet (19) are provided at the end of the organ blowing sleeve (16) fixedly connected to the annular collecting chamber (13). At the other end of the accordion blowing sleeve (16), a ventilation port that only allows air to pass in one direction is provided on the accordion blowing sleeve (16) outside the soft magnetic ring (17), and the ventilation port is covered by a filter that can block powder. The return spring (18) is evenly distributed in an annular shape between the soft magnetic ring (17) and the accordion blowing sleeve (16). The strong magnetic electromagnet (19) is engaged in the strong magnet bracket (48), and the strong magnetic electromagnet (19) can generate a magnetic adsorption force on the soft magnetic ring (17) after being energized.

4. A grinding device for high performance concrete production according to claim 3, characterized in that: The feeding assembly (23) comprises a feeding channel (27), a spiral blade (28), a detachable plug (29) and a disc base (30); the disc base (30) is fixedly connected to the end of a fence-type bracket (47); one end of the feeding channel (27) is rotatably disposed in an annular end plate (11); the other end of the feeding channel (27) is rotatably disposed in the disc base (30); the spiral blade (28) is fixedly connected to the inner wall of the feeding channel (27); a hollow blind tube (42) is disposed inside the spiral blade (28); and the detachable plug (29) is disposed at the end of the feeding channel (27).

5. A grinding device for high performance concrete production according to claim 4, characterized in that: The rolling support assembly (24) comprises a roller base (31) and a support roller (32); the roller base (31) is arranged on a main bottom plate (45); the support roller (32) is rotatably arranged in the roller base (31); a groove portion (43) matching the convex ring portion (20) is provided on the support roller (32); and the ball mill (5) is rotatably arranged on the support roller (32).

6. A grinding device for high performance concrete production according to claim 5, characterized in that: The speed regulating assembly (25) comprises a friction wheel (33), a friction plate (34), a guide bracket (35), a preload spring (36) and a preload electromagnet (37). The friction wheel (33) is fixedly connected to the material supply channel (27). The guide bracket (35) is fixedly connected to the disc base (30). The profile of the friction plate (34) matches the profile of the friction wheel (33). The friction plate (34) is symmetrically provided with guide posts (44). The guide posts (44) are engaged with the material supply channel (27). The preload spring (36) is mounted on the guide column (44) and is arranged between the friction plate (34) and the guide bracket (35). A part of the preload electromagnet (37) is arranged on the guide bracket (35), and another part of the preload electromagnet (37) is arranged on the friction plate (34). The two parts of the preload electromagnet (37) generate a repulsive force after being energized, and the repulsive force increases with the increase of the current.

7. A grinding device for high performance concrete production according to claim 6, characterized in that: The serial magnetic induction component (26) comprises a sliding rheostat (38), a sliding portion (39) and an induction magnetic block (40). The serial magnetic induction component (26) array is provided with a plurality of groups. The sliding rheostat (38) is provided on a fence-type bracket (47). The sliding portion (39) is slidably provided on the sliding rheostat (38). The induction magnetic block (40) is provided at the top of the sliding portion (39). Each group of sliding rheostats (38) is connected in series. The circuit where the sliding rheostat (38) is located is connected in parallel with the circuit where the preload electromagnet (37) is located.

8. A grinding device for high performance concrete production according to claim 7, characterized in that: The speed reduction mechanism (4) comprises a driving motor (49), a speed reducer base (50), a speed reducer body (51) and a driving assembly (52); the driving motor (49) is arranged on a main base plate (45); the speed reducer base (50) is arranged on the main base plate (45); the speed reducer body (51) is arranged on the speed reducer base (50); an output shaft of the driving motor (49) and an output shaft of the speed reducer body (51) are driven by a belt; and the driving assembly (52) is arranged on the main base plate (45).

9. A grinding device for high performance concrete production according to claim 8, characterized in that: The driving assembly (52) comprises a gear shaft bracket (53), a driving wheel shaft (54) and a driven gear ring (55); the gear shaft bracket (53) is arranged on the main base plate (45); the driving wheel shaft (54) is rotatably arranged in the gear shaft bracket (53); the pulley portion of the driving wheel shaft (54) is connected to the output shaft of the reducer body (51) by means of a belt drive; the driven gear ring (55) is engaged with the hollow support shaft (14); and the gear portion of the driving wheel shaft (54) is meshed with the driven gear ring (55) for transmission.

10. A method for using the grinding device for high performance concrete production according to claim 9, characterized in that: The steps include: Step 1: Remove the removable plug (29) and connect the external feed pipe. The unground granular material will enter the feed channel (27) from the external feed pipe. Since part of the space in the feed channel (27) is occupied by the hollow blind tube (42), the material can only be accumulated on both sides of the spiral blade (28). Only when the spiral blade (28) rotates will the material be transported toward the ball mill (5). The speed of transporting the material through the feed channel (27) toward the ball mill (5) is positively correlated with the rotation speed of the spiral blade (28); Step 2: simultaneously starting the driving motor (49), the driving motor (49) drives the reducer body (51) through a belt transmission, and after the reducer body (51) is decelerated, the driving motor (49) drives the driving wheel shaft (54) to rotate through a belt transmission. Since the driving wheel shaft (54) and the driven gear ring (55) are meshed, the driven gear ring (55) will also rotate along with it. When the driven gear ring (55) rotates, it will also drive the annular collection chamber (13) and the ball mill (5) to rotate together; Step 3: When the ball mill (5) rotates, it will carry the material and the abrasive inside with it. When the abrasive rises and falls, it will hit the grinding material and convert it into powder. The inside of the first filter plate (8) is the coarse grinding area, the area between the first filter plate (8) and the ball mill housing (9) is the fine grinding area, and the annular collection chamber (13) is the collection area. The material passes through the coarse grinding area, the fine grinding area and the collection area in sequence. Step 4: During the rotation of the annular collecting chamber (13), the energized strong magnetic electromagnet (19) will overcome the elastic force of the return spring (18) and adsorb the soft magnetic ring (17), so that the return spring (18) near the strong magnetic electromagnet (19) is in a compressed state. During this process, a negative pressure will be generated at the position where the soft magnetic ring (17) in the annular collecting chamber (13) is adsorbed, thereby attracting the powder in the fine grinding area and the coarse grinding area that can pass through the second filter plate (10) to the collection area, and the compressed air inside the accordion blowing sleeve (16) will be discharged through the exhaust window 2 (22) and the exhaust window 1 (21); since the accordion blowing sleeve (16) is continuously rotating, and the strong magnetic electromagnet (19 ) is fixed, so the accordion blowing sleeve (16) actually undergoes periodic local compression, and the rotation of the accordion blowing sleeve (16) itself can make the position where the negative pressure is generated relatively stable with the main bottom plate (45), so that a continuous negative pressure can be generated at the position corresponding to the strong magnetic electromagnet (19); because the annular collecting chamber (13) is evenly distributed with partitions that divide the annular collecting chamber (13) into fan-shaped areas, the deformation of the soft magnetic ring (17) generates negative pressure in different chambers, and when the soft magnetic ring (17) is reset after being away from the strong magnetic electromagnet (19), the excess air can be discharged through the one-way ventilation port on the accordion blowing sleeve (16); Step 5: The ground powder can be collected in the annular collection chamber (13) by continuously generating negative pressure; Step 6: One end of the feed channel (27) is installed in the ball mill (5), and there is friction between the two. Therefore, the speed at which the feed channel (27) rotates along with the ball mill (5) depends on the resistance of the speed regulating component (25). When the rotation speed of the ball mill (5) is stable, the height to which the abrasive is lifted is also stable. However, since the abrasive can roll, the material is always located between the ball mill (5) and the abrasive. Specifically, when the amount of material in the ball mill (5) increases, the distance between the abrasive and the induction magnetic block (40) becomes farther when the abrasive is lifted to the same height. At this time, the height to which the induction magnetic block (40) can be attracted to slide is lower, and the resistance of the sliding rheostat (38) becomes larger. At this time, the current in the preload electromagnet (37) increases, and the friction between the friction wheel (33) and the friction plate (34) increases, thereby reducing the rotation speed of the feed channel (27), that is, reducing the feeding speed toward the ball mill (5). When the material in the ball mill (5) decreases, the distance between the abrasive and the inductive magnetic block (40) becomes closer when the abrasive is lifted to the same height. At this time, the inductive magnetic block (40) can be attracted to slide at a higher height and the resistance of the sliding rheostat (38) is smaller. At this time, the current in the preload electromagnet (37) decreases, and the friction between the friction wheel (33) and the friction plate (34) decreases, thereby increasing the rotation speed of the feeding channel (27), that is, increasing the feeding speed into the ball mill (5).

Images