A high pressure roller mill for recycling crushed material

Abstract

The application relates to the technical field of material crushing, in particular to a high-pressure roller mill capable of cyclically crushing materials, which comprises a machine body, a screening and conveying device, a spiral material conveying device and an auxiliary pre-roller-milling discharging device. The auxiliary pre-roller-milling discharging device is arranged in the machine body and is used for uniformly laying materials before roller milling. The screening and conveying device is used for automatically discharging unqualified roller-milling powder in the machine body, thereby facilitating the subsequent secondary roller milling of the discharged materials, realizing the cyclic crushing and roller milling of the materials by the roller mill, conveying the screened materials to the discharging port of the machine body by the spiral material conveying device, performing secondary cyclic crushing, and combining the auxiliary pre-roller-milling discharging device to realize the uniform laying of the materials while the machine body cyclically crushes the materials, so that the roller mill can roller mill the materials in the maximum area, and the roller milling efficiency is further improved.

Description

Technical Field

[0001] This invention relates to the field of material crushing technology, specifically to a high-pressure roller mill capable of crushing materials in a recyclable manner. Background Technology

[0002] High-pressure roller mills, relying on their efficient lamination and crushing principle, have been widely used in many industries such as cement and metal mining. High-pressure roller mills, also known as roller presses or extrusion mills, have the advantages of high efficiency, low energy consumption, light wear, low noise, and convenient operation. They are a new type of energy-saving crushing equipment. High-pressure roller mills crush materials through a pair of rollers.

[0003] A search of Chinese Patent Publication No. CN110721764A reveals a high-pressure roller mill for material crushing, comprising a mounting frame, a main roller mill mounted on the mounting frame, a drive device for driving the main roller mill, and a material feeding device. The main roller mill includes a reciprocating fixed roller, a movable roller cooperating with the fixed roller, a fixed roller shaft cooperating with the fixed roller to prevent rotation, and a movable roller shaft cooperating with the movable roller to prevent rotation. The drive device includes a fixed roller drive structure for driving the fixed roller to rotate back and forth, a movable roller drive structure cooperating with the movable roller, and a transmission structure for simultaneously driving two sets of material feeding devices. This invention, through the above structural design, allows the rollers to be effectively driven. While crushing materials, it eliminates the need for additional drive components to drive the material feeding devices, thus ensuring uniform material distribution without excessively increasing costs. Furthermore, it improves the energy efficiency of the drive device, achieving energy conservation and environmental protection.

[0004] The above inventions, combined with the roller mills used in actual applications referenced by the applicant, all exhibit two common defects: 1. During material roller milling, a small amount of powder is not sufficiently ground. Although some fragments that do not meet the requirements for material roller milling are screened out within the roller mill, these unsuitable fragments are usually removed separately after roller milling. The roller mill itself cannot circulate and crush the screened unsuitable materials. 2. Since the material is fed from the top of the roller mill onto the two rollers, it is not evenly distributed between the two rollers during feeding. Instead, the material usually accumulates in the central area of ​​the two rollers, forming a small hill-like structure for roller milling. This results in only the central area of ​​the rollers achieving effective roller milling, while the areas at both ends experience ineffective roller milling, leading to low roller milling efficiency. In view of this, we propose a high-pressure roller mill for circulating and crushing materials. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a high-pressure roller mill for recyclable crushing of materials, solving the problems mentioned in the background section. To achieve the above objectives, this invention is implemented through the following technical solution: a high-pressure roller mill for recyclable crushing of materials, comprising a machine body, wherein grinding rollers are connected to the machine body via a power assembly; a screening and conveying device, disposed inside the machine body, for screening the material after roller milling and conveying the crushed material out of the machine body; a screw conveyor, disposed on both sides of the machine body, for conveying the screened crushed material to the discharge port of the machine body for secondary recycling crushing; and an auxiliary feeding device before roller milling, disposed inside the machine body, for uniformly spreading the material before roller milling.

[0006] Preferably, the screening and conveying device includes a magnetic rotary toothed disc and a guide base. The end face of the magnetic rotary toothed disc is rotatably connected to the machine body. A drive roller is fixedly connected to the end of the magnetic rotary toothed disc. An auxiliary drive roller is driven to the surface of the drive roller through a transmission belt. A mesh belt is fixedly connected to the surface of the transmission belt. A central tooth is engaged on the surface of the magnetic rotary toothed disc. A screen cylinder is fixedly connected inside the central tooth.

[0007] Preferably, the magnetic rotating tooth disk has multiple magnets fixedly connected inside, and the multiple magnets are arranged in a circular array with the same polar orientation on the magnetic rotating tooth disk. The magnetic rotating tooth disk is connected to a magnetic turntable through the magnetic force of the magnets. The magnetic rotating tooth disk and the magnetic turntable are symmetrically distributed with the center line of the central tooth as the axis of symmetry, and the end of the magnetic turntable is rotatably connected to the machine body.

[0008] Preferably, the end of the magnetic rotary disc is connected to the end of the grinding roller body via a pulley and a belt, the end of the driving roller is rotatably connected to the inside of the machine body, the end of the auxiliary driving roller is rotatably connected to the inside of the material guide base, the ends of the center tooth and the screen cylinder are respectively rotatably connected to the inside of the machine body, and the surface of the material guide base is fixedly connected to one side of the machine body.

[0009] Preferably, the screw conveying device includes a vertical screw chamber, which is installed on one side of the machine body. A vertical screw blade is rotatably connected inside the vertical screw chamber. The top end of the vertical screw blade passes through the vertical screw chamber and is fixedly connected to a worm gear. A worm is meshed on the surface of the worm gear. A magnetic worm disk is meshed on the surface of the worm. A connecting disk is rotatably connected to the end of the magnetic worm disk. A horizontal screw chamber is fixedly connected inside the connecting disk. A horizontal screw blade is rotatably connected inside the horizontal screw chamber.

[0010] Preferably, the surface of the worm gear is rotatably connected to the machine body, the interior of the vertical spiral chamber is connected to the interior of the guide base, the connecting plate is installed on the machine body, and multiple magnets are arranged in a circular array on the surface of the horizontal spiral blade and the inner wall of the magnetic worm disk, and the surface of the horizontal spiral blade is magnetically connected to the inner wall of the magnetic worm disk through the magnets.

[0011] Preferably, the bottom of the horizontal spiral chamber is connected to the interior of the machine body, the top of the machine body is fixedly connected to a feeding hopper, the end of the horizontal spiral blade passes through the end of the horizontal spiral chamber and is rotatably connected to the interior of the feeding hopper, and a stirring rod is fixedly connected to the axial surface of the horizontal spiral blade located inside the feeding hopper.

[0012] Preferably, the auxiliary feeding device before the roller mill includes a reciprocating lead screw, both ends of which are rotatably connected to the inside of the machine body. A sliding sleeve is slidably connected to the surface of the reciprocating lead screw, and a magnetic column is fixedly connected to the surface of the sliding sleeve. A magnetic shaft is magnetically connected to the end of the magnetic column, and a feeding rod is elastically connected to the inside of the magnetic shaft through a spring.

[0013] Preferably, the end of the reciprocating lead screw is connected to the end of the grinding roller and the end of the worm gear respectively via a pulley and a belt. The surface of the sliding sleeve is slidably connected to a baffle via a slider. The surface of the baffle is fixedly connected to the machine body. The side of the baffle away from the sliding sleeve is slidably connected to the surface of the magnetic shaft.

[0014] Preferably, the auxiliary feeding device before the roller mill further includes a magnetic block, a base for alternating positive and negative magnets, and a base for alternating negative and positive magnets. The end of the magnetic block is fixedly connected to the feeding rod. The base for alternating positive and negative magnets and the base for alternating negative and positive magnets are both fixedly connected to the top of the machine body. The top of the magnetic block is magnetically connected to the inner wall of the base for alternating positive and negative magnets and the base for alternating negative and positive magnets.

[0015] As can be seen from the above technical solutions, the high-pressure roller mill for recyclable crushed materials provided in the embodiments of this specification has at least the following beneficial effects:

[0016] (1) The present invention achieves the effect of automatically discharging unqualified roller mill powder inside the machine body through the screening and conveying device, which facilitates the secondary roller milling of the discharged material. The roller mill can circulate and crush and grind materials. The screw conveyor transports the screened crushed material to the discharge port of the machine body for secondary circulation crushing. Combined with the auxiliary feeding device before roller milling, the machine body can uniformly spread the material while circulating and crushing the material, so that the grinding roller body can grind the material with the largest area, and further improve the roller milling efficiency.

[0017] (2) By setting the height of the active roller lower than that of the auxiliary roller, the transmission belt drives the mesh belt to be inclined upward to transport the material from the inside of the machine to the guide base. The upward inclined discharge method can increase the discharge resistance and speed of the screened material, and then realize the mesh belt to screen the broken material again during the discharge, thus avoiding the problem of the discharge of powder that meets the requirements. When the belt-driven magnetic toothed disc rotates, it drives the screen cylinder to rotate through its upper teeth to drive the center teeth. The rotation of the screen cylinder achieves the effect of power screening on the one hand, and avoids the problem of material blockage on the other hand.

[0018] (3) In this invention, the worm rotates and meshes with the worm wheel and the magnetic worm disk. When the worm wheel rotates, the material in the vertical worm chamber is fed by the vertical worm wheel through the vertical worm wheel. When the material is fed to the horizontal worm chamber, the material is fed into the horizontal worm chamber due to the connection between the horizontal worm chamber and the vertical worm chamber. When the magnetic worm disk rotates on the horizontal worm chamber, the magnetic force of the magnetic magnet inside the magnetic disk drives the horizontal worm wheel to rotate synchronously. The horizontal worm wheel achieves the effect of conveying material during rotation. The material is conveyed from the end of the horizontal worm chamber to the inside of the machine body through the rotation of the horizontal worm wheel. The material is fed again between the two grinding rollers for grinding, further achieving the effect of cyclic grinding.

[0019] (4) The present invention drives the sliding sleeve, which is slidably connected to its surface and limited by the slider to move only in a straight line, to move when the reciprocating screw rotates. During the movement, the sliding sleeve moves synchronously with the magnetic shaft by the magnetic force of the magnetic column. The magnetic shaft drives the feeding rod to move back and forth in a straight line in the machine body. During the movement, the material accumulated between the two grinding rollers is scraped flat, and the material is evenly spread. The material that was originally piled up in a mountain shape is quickly spread flat on the grinding roller, further achieving the effect of even spreading. This allows the grinding roller to grind the material with the largest area and improve the grinding efficiency. Attached Figure Description

[0020] The accompanying drawings, which are provided to further illustrate the invention, constitute a part of this application:

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

[0022] Figure 2 This is a schematic diagram of the internal structure of the machine body in this invention;

[0023] Figure 3 This is a schematic diagram of the material conveying device in this invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the vertical spiral hopper in this invention;

[0025] Figure 5This is a schematic diagram of the internal structure of the horizontal spiral chamber in this invention;

[0026] Figure 6 This is a schematic diagram of the structure of the magnetic worm gear in this invention;

[0027] Figure 7 This is a schematic diagram of the auxiliary feeding device before the roller mill in this invention.

[0028] In the diagram: 1. Machine body; 2. Grinding roller body; 3. Screening conveyor device; 31. Magnetic rotary toothed disc; 32. Drive roller; 33. Transmission belt; 34. Mesh belt; 35. Center tooth; 36. Screen cylinder; 37. Guide base; 38. Magnetic turntable; 39. Auxiliary drive roller; 4. Screw conveying device; 41. Vertical screw hopper; 42. Vertical screw blade; 43. Worm gear; 44. Worm; 45. Magnetic worm disc; 46. Connecting disc; 47. Horizontal screw hopper; 48. Horizontal screw blade; 5. Auxiliary feeding device before roller mill; 51. Reciprocating screw; 52. Sliding sleeve; 53. Magnetic column; 54. Magnetic shaft; 55. Feeding rod; 56. Baffle; 57. Magnetic block; 58. Base with alternating positive and negative magnets; 59. Base with alternating positive and negative magnets; 6. Feed hopper; 7. Stirring rod. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1

[0031] Please see Figures 1-7 As shown, a high-pressure roller mill for recyclable crushing of materials includes a machine body 1, with a grinding roller body 2 connected inside the machine body 1 via a power assembly; a screening and conveying device 3, which is located inside the machine body 1 and is used to screen the material after roller milling, and then convey the crushed material out of the machine body 1; a screw conveying device 4, which is located on both sides of the machine body 1 and is used to convey the screened crushed material to the discharge port of the machine body 1 for secondary recycling and crushing; and an auxiliary feeding device 5 before roller milling, which is located inside the machine body 1 and is used to evenly spread the material before roller milling.

[0032] In this embodiment, the screening and conveying device 3 includes a magnetic rotating toothed disc 31 and a guide base 37. The end face of the magnetic rotating toothed disc 31 is rotatably connected to the machine body 1. The end of the magnetic rotating toothed disc 31 is fixedly connected to a drive roller 32. The surface of the drive roller 32 is connected to a secondary drive roller 39 via a transmission belt 33. The surface of the transmission belt 33 is fixedly connected to a mesh belt 34. The surface of the magnetic rotating toothed disc 31 is meshed with a central tooth 35. The inside of the central tooth 35 is fixedly connected to a screen cylinder 36. The screening and conveying device 3 automatically discharges unqualified roller mill powder from the machine body 1, facilitating subsequent secondary roller milling of the discharged material. This enables the roller mill to circulate and crush materials. The height of the active roller 32 is lower than that of the auxiliary roller 39. The transmission belt 33 drives the mesh belt 34 to tilt upwards, conveying the material from the machine body 1 to the guide base 37. The upward tilt discharge method increases the discharge resistance and speed of the screened material, allowing the mesh belt 34 to screen the crushed material again during discharge, avoiding the discharge of qualified powder. When the belt-driven magnetic toothed disc 31 rotates, it drives the screen cylinder 36 to rotate through its upper teeth to drive the central tooth 35. The rotation of the screen cylinder 36 achieves the effect of power screening and avoids material blockage.

[0033] Furthermore, multiple magnets are fixedly connected inside the magnetic rotating toothed disk 31, and these magnets are arranged in a circular array with the same polarity. The magnetic rotating toothed disk 31 is magnetically connected to a magnetic rotating disk 38 through the magnetic force of the magnets. The magnetic rotating toothed disk 31 and the magnetic rotating disk 38 are symmetrically distributed about the center line of the central tooth 35 as the axis of symmetry, and the end of the magnetic rotating disk 38 is rotatably connected to the machine body 1. The rotating magnetic rotating toothed disk 31 drives the auxiliary roller 39 to rotate through the drive roller 32 and the transmission belt 33. The height of the drive roller 32 is lower than that of the auxiliary roller 39. The transmission belt 33 drives the mesh belt 34 to tilt upwards, conveying the material from inside the machine body 1 to the guide base 37. During rotation, the magnetic rotating toothed disk 31 uses magnetic force to drive the magnetic rotating disk 38 to rotate in the opposite direction. Figure 3 As shown, the magnetic turntable 38 drives the active roller 32, transmission belt 33 and auxiliary roller 39 on it to discharge the material on the mesh belt 34 located at the magnetic turntable 38 into the machine body 1. The upward tilting discharge method can increase the discharge resistance and speed of the screened material, thereby realizing the screening of the broken material by the mesh belt 34 during the discharge, avoiding the problem of the discharge of powder that meets the requirements.

[0034] Furthermore, the end of the magnetic rotary disc 31 is connected to the end of the grinding roller body 2 via a pulley and belt, the end of the drive roller 32 is rotatably connected to the inside of the machine body 1, the end of the auxiliary drive roller 39 is rotatably connected to the inside of the guide base 37, the ends of the center tooth 35 and the screen cylinder 36 are respectively rotatably connected to the inside of the machine body 1, and the surface of the guide base 37 is fixedly connected to one side of the machine body 1.

[0035] It is worth noting that the screw conveyor 4 includes a vertical screw chamber 41, which is installed on one side of the machine body 1. A vertical screw blade 42 is rotatably connected inside the vertical screw chamber 41. The top end of the vertical screw blade 42 passes through the vertical screw chamber 41 and is fixedly connected to a worm gear 43. A worm 44 is meshed on the surface of the worm gear 43. A magnetic worm disk 45 is meshed on the surface of the worm 44. A connecting disk 46 is rotatably connected to the end of the magnetic worm disk 45. A horizontal screw chamber 47 is fixedly connected inside the connecting disk 46. A horizontal screw blade 48 is rotatably connected inside the horizontal screw chamber 47. The worm gear 44 rotates and meshes with the worm wheel 43 and the magnetic worm disk 45. When the worm wheel 43 rotates, it drives the material in the vertical worm chamber 41 to be spirally fed through the vertical worm blade 42. When the material is fed to the horizontal worm chamber 47, due to the connection between the horizontal worm chamber 47 and the vertical worm chamber 41, the material is fed into the horizontal worm chamber 47. When the magnetic worm disk 45 rotates on the horizontal worm chamber 47, it drives the horizontal worm blade 48 to rotate synchronously through the magnetic force of its internal magnet. The horizontal worm blade 48 achieves the effect of conveying material during rotation. The material is conveyed from the end of the horizontal worm chamber 47 to the inside of the machine body 1 through the rotation of the horizontal worm blade 48. The material is fed again between the two grinding rollers 2 for grinding, further achieving the effect of cyclic grinding.

[0036] It is worth noting that the surface of the worm 44 is rotatably connected to the machine body 1, the interior of the vertical spiral chamber 41 is connected to the interior of the guide base 37, the connecting plate 46 is installed on the machine body 1, and multiple magnets are arranged in a ring array on the surface of the horizontal spiral blade 48 and the inner wall of the magnetic worm disk 45, and the surface of the horizontal spiral blade 48 is magnetically connected to the inner wall of the magnetic worm disk 45 through the magnets.

[0037] Furthermore, the bottom of the horizontal spiral chamber 47 is connected to the interior of the machine body 1, and a hopper 6 is fixedly connected to the top of the machine body 1. The end of the horizontal spiral blade 48 passes through the end of the horizontal spiral chamber 47 and is rotatably connected to the interior of the hopper 6. A stirring rod 7 is fixedly connected to the rotating axial surface of the horizontal spiral blade 48 within the hopper 6. The rotating horizontal spiral blade 48 rotates continuously within the hopper 6 via the stirring rod 7 on its end face, further assisting in the continuous feeding of materials within the hopper 6, preventing clogging of the hopper 6, and improving the feeding rate.

[0038] In addition, the auxiliary feeding device 5 before the roller mill includes a reciprocating screw 51, both ends of which are rotatably connected to the inside of the machine body 1. A sliding sleeve 52 is slidably connected to the surface of the reciprocating screw 51, and a magnetic column 53 is fixedly connected to the surface of the sliding sleeve 52. A magnetic shaft 54 ​​is magnetically connected to the end of the magnetic column 53. A feeding rod 55 is elastically connected to the inside of the magnetic shaft 54 ​​through a spring. The feeding rod 55 can only move linearly left and right inside the magnetic shaft 54 ​​through a telescopic tube. The telescopic tube is located inside the spring at this location, and the spring is sleeved on it. The grinding roller body 2 transmits power to the reciprocating screw 51 through the pulley and belt at its end. When the reciprocating screw 51 rotates, it drives the sliding sleeve 52, which is slidably connected to its surface and limited by the slider to move only in a straight line. During the movement, the sliding sleeve 52 moves synchronously by being attracted by the magnetic force of the magnetic column 53 to the magnetic shaft 54. The magnetic shaft 54 ​​drives the material feeding rod 55 to move back and forth in a straight line within the machine body 1. During the movement, the material accumulated between the two grinding roller bodies 2 is scraped flat, achieving the effect of uniformly spreading the material. This allows the material that was originally piled up in a mountain shape to be quickly spread flat on the grinding roller body 2, further achieving the effect of uniform spreading. This allows the grinding roller body 2 to grind the material over the largest area, improving the grinding efficiency.

[0039] Furthermore, the end of the reciprocating screw 51 is connected to the end of the grinding roller body 2 and the end of the worm gear 44 via a pulley and a belt, respectively. The surface of the sliding sleeve 52 is slidably connected to a baffle 56 via a slider. The surface of the baffle 56 is fixedly connected inside the machine body 1. The side of the baffle 56 away from the sliding sleeve 52 is slidably connected to the surface of the magnetic shaft 54. The baffle 56 is used to limit the sliding sleeve 52 and the magnetic shaft 54 ​​on the one hand, and to isolate and limit the material being ground between the two grinding roller bodies 2 on the other hand.

[0040] Furthermore, the auxiliary feeding device 5 before the roller mill also includes a magnetic block 57, a base 58 with alternating positive and negative pole magnets, and a base 59 with alternating positive and negative pole magnets. The end of the magnetic block 57 is fixedly connected to the feeding rod 55. The bases 58 and 59 are both fixedly connected to the top inside the machine body 1. The top of the magnetic block 57 is magnetically connected to the inner wall of the bases 58 and 59. Figure 7As shown, multiple magnets are linearly arrayed on the alternating positive and negative pole magnet distribution base 58, with each magnet having opposite pole orientations and an alternating positive pole state. Therefore, the magnet distribution state corresponding to the alternating positive and negative pole magnet distribution base 59 and the alternating positive and negative pole magnet distribution base 58 is also an opposite, alternating positive pole state. That is, the pole orientations of each magnet on the alternating positive and negative pole magnet distribution base 59 and the alternating positive and negative pole magnet distribution base 58 are opposite. When the magnetic block 57 moves to the first magnet on the alternating positive and negative pole magnet distribution base 59, it experiences an attractive force on one side and a repulsive force on the other, causing the magnetic block 57 to move closer to the negative and positive poles. The base 59 with alternating polarity magnets moves. When it moves to the second magnet, the magnetic polarity changes, and the direction of movement of the magnetic block 57 is reversed. At this time, the magnetic block 57 moves closer to the base 58 with alternating polarity magnets, and then the magnetic block 57 moves back and forth inside the machine body 1. At the same time, under the influence of the magnetic force, it continuously swings left and right in a short range. The force of the magnetic force driving the swing acts on the stirring rod 7, so as to drive the stirring rod 7 to push the material between the two left and right grinding rollers 2. By pushing the material between the two grinding rollers 2 back and forth and left and right, the effect of evenly spreading the material is achieved.

[0041] In the operation of the high-pressure roller mill for recyclable crushing of materials according to the present invention, the feeding device feeds the material into the machine body 1 through the feeding hopper 6. The power component drives the two grinding rollers 2 to rotate, and the grinding rollers 2 grind the material on the roller surface. During the grinding, the grinding rollers 2 transmit power to the reciprocating screw 51 and the magnetic rotating toothed disc 31 through the pulley and belt at the end. When the reciprocating screw 51 rotates, it moves through the sliding sleeve 52, which is slidably connected to its surface and limited by the slider to move only linearly. During the movement, the sliding sleeve 52 moves synchronously through the magnetic attraction of the magnetic column 53 to the magnetic shaft 54. The magnetic shaft 54 ​​drives the feeding rod 55 to move back and forth linearly within the machine body 1. During the movement, the material accumulated between the two grinding rollers 2 is scraped flat. At the same time, during the movement, the feeding rod 55 is affected by the magnetic block 57 on it and oscillates back and forth between the positive and negative pole alternating magnet distribution base 58 and the negative and positive pole alternating magnet distribution base 59. Figure 7As shown, multiple magnets are linearly arrayed on the alternating positive and negative pole magnet distribution base 58, with each magnet having opposite pole orientations and an alternating positive pole state. Therefore, the magnet distribution state corresponding to the alternating positive and negative pole magnet distribution base 59 and the alternating positive and negative pole magnet distribution base 58 is also an opposite, alternating positive pole state. That is, the pole orientations of each magnet on the alternating positive and negative pole magnet distribution base 59 and the alternating positive and negative pole magnet distribution base 58 are opposite. When the magnetic block 57 moves to the first magnet on the alternating positive and negative pole magnet distribution base 59, it experiences attraction on one side and repulsion on the other, causing the magnetic block 57 to move closer to the alternating positive and negative pole magnet distribution base 59. When it moves to the second magnet, the magnetic pole orientation changes... As the magnetic block 57 moves, its direction of movement reverses from its original state. At this time, the magnetic block 57 moves closer to the base 58 where the positive and negative poles of the magnets are distributed. This allows the magnetic block 57 to move back and forth inside the machine body 1. Simultaneously, under the influence of the magnetic force, it continuously swings left and right within a short range. The force of the magnetic force driving the swing acts on the stirring rod 7, thus driving the stirring rod 7 to push the material between the two left and right grinding rollers 2. By pushing the material being ground between the two grinding rollers 2 back and forth and left and right, the material is evenly spread, allowing the material that was originally piled up in a mountain shape to be quickly spread flat on the grinding rollers 2, further achieving the effect of even spreading. This allows the grinding rollers 2 to grind the material over the largest area, improving grinding efficiency.

[0042] Simultaneously, the powder from the roller mill is fed into the screen cylinder 36, where the screen cylinder 36 and the mesh belts 34 on both sides achieve the screening effect. During this period, the belt-driven magnetic rotary disc 31 drives the screen cylinder 36 to rotate through its upper teeth driving the central tooth 35. The rotation of the screen cylinder 36 achieves the effect of power screening on the one hand, and avoids the problem of material blockage on the other. The rotating magnetic rotary disc 31 drives the auxiliary roller 39 to rotate through the active roller 32 and the transmission belt 33. The height of the active roller 32 is lower than that of the auxiliary roller 39. The transmission belt 33 drives the mesh belt 34 to tilt upwards, conveying the material from inside the machine body 1 to the guide base 37. During the rotation of the magnetic rotary disc 31, the magnetic rotary disc 38 is driven to rotate in the opposite direction by magnetic force. Figure 3 As shown, the magnetic turntable 38 drives the active roller 32, transmission belt 33 and auxiliary roller 39 on it to discharge the material on the mesh belt 34 located at the magnetic turntable 38 into the machine body 1. The upward tilting discharge method can increase the discharge resistance and speed of the screened material, thereby realizing the re-screening of the crushed material by the mesh belt 34 during the discharge, avoiding the problem of the discharge of qualified powder. The setting of the screening and conveying device 3 realizes the effect of automatically discharging the unqualified roller mill powder inside the machine body 1, which facilitates the secondary roller milling of the discharged material, realizing the roller mill can circulate and crush and grind materials.

[0043] Material is fed into the vertical spiral silo 41 via the guide base 37. Simultaneously, the reciprocating screw 51 drives the worm gear 44 via a pulley and belt. During rotation, the worm gear 44 meshes with both the worm wheel 43 and the magnetic worm disk 45. As the worm wheel 43 rotates, it drives the material in the vertical spiral silo 41 to be fed into the worm through the vertical spiral blade 42. When the material reaches the horizontal spiral silo 47, due to the connection between the horizontal and vertical spiral silos, the material is fed into the horizontal spiral silo 47. As the magnetic worm disk 45 rotates on the horizontal spiral silo 47, it is driven by the magnetic field of its internal magnets. The horizontal spiral blade 48 is driven by force to rotate synchronously. During rotation, the horizontal spiral blade 48 conveys materials. The materials are conveyed from the end of the horizontal spiral bin 47 into the machine body 1 by the rotation of the horizontal spiral blade 48. The materials are then fed back into the two grinding rollers 2 for grinding, further achieving the effect of circulating grinding. At the same time, the rotating horizontal spiral blade 48 rotates continuously in the feeding hopper 6 through the stirring rod 7 on its end face, further achieving the effect of assisting the continuous feeding of materials in the feeding hopper 6, avoiding the problem of clogging in the feeding hopper 6, and improving the feeding rate.

[0044] The above embodiments are only used to illustrate the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the embodiments of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the embodiments of the present invention, and the patent protection scope of the embodiments of the present invention should be defined by the claims.

Claims

1. A high-pressure roller mill for recyclable crushing of materials, characterized in that: include: The machine body (1) is connected to the grinding roller body (2) through a power component; the screening conveying device (3) is set inside the machine body (1) and is used to screen the non-compliant material after roller milling and convey the crushed material out of the machine body (1) after screening; the screw conveying device (4) is set on both sides of the machine body (1) and is used to convey the screened crushed material to the discharge port of the machine body (1) for secondary circulation crushing; the roller mill pre-aided feeding device (5) is set inside the machine body (1) and is used to uniformly spread the material before roller milling. The screening and conveying device (3) includes a magnetic rotating toothed disc (31) and a guide base (37). The end face of the magnetic rotating toothed disc (31) is rotatably connected to the machine body (1). The end of the magnetic rotating toothed disc (31) is fixedly connected to a drive roller (32). The surface of the drive roller (32) is connected to a secondary drive roller (39) via a transmission belt (33). The surface of the transmission belt (33) is fixedly connected to a mesh belt (34). The surface of the magnetic rotating toothed disc (31) is meshed with a central tooth (35). The inside of the central tooth (35) is fixedly connected to a screen cylinder (36). The magnetic rotating tooth disk (31) has multiple magnets fixedly connected inside, and the multiple magnets are arranged in a circular array with the same polar orientation on the magnetic rotating tooth disk (31). The magnetic rotating tooth disk (31) is connected to a magnetic rotating disk (38) through the magnetic force of the magnets. The magnetic rotating tooth disk (31) and the magnetic rotating disk (38) are symmetrically distributed with the center line of the center tooth (35) as the axis of symmetry, and the end of the magnetic rotating disk (38) is rotatably connected to the body (1). The end of the magnetic rotating toothed disc (31) is connected to the end of the grinding roller body (2) via a pulley and belt. The end of the driving roller (32) is rotatably connected to the inside of the machine body (1). The end of the auxiliary driving roller (39) is rotatably connected to the inside of the guide base (37). The ends of the center tooth (35) and the screen cylinder (36) are rotatably connected to the inside of the machine body (1) respectively. The surface of the guide base (37) is fixedly connected to one side of the machine body (1). The auxiliary feeding device (5) before the roller mill includes a reciprocating screw (51), both ends of which are rotatably connected to the inside of the machine body (1). A sliding sleeve (52) is slidably connected to the surface of the reciprocating screw (51), and a magnetic column (53) is fixedly connected to the surface of the sliding sleeve (52). A magnetic shaft (54) is magnetically connected to the end of the magnetic column (53). A feeding rod (55) is elastically connected to the inside of the magnetic shaft (54) through a spring. The feeding rod (55) is inside the magnetic shaft (54) through a telescopic tube. It can only move linearly left and right. The telescopic tube is located inside the spring at this location, and the spring is sleeved on it. The grinding roller body (2) transmits power to the reciprocating screw (51) through the pulley and belt at the end. When the reciprocating screw (51) rotates, it drives the sliding sleeve (52), which is slidably connected to its surface and limited by the slider to move linearly. During the movement, the sliding sleeve (52) moves synchronously by magnetically attracting the magnetic shaft (54) through the magnetic force of the magnetic column (53). The magnetic shaft (54) drives the feeding rod (55) to move in the machine. The machine body (1) moves back and forth linearly; the surface of the sliding sleeve (52) is slidably connected to a baffle (56) via a slider, and the surface of the baffle (56) is fixedly connected to the machine body (1). The side of the baffle (56) away from the sliding sleeve (52) is slidably connected to the surface of the magnetic shaft (54). The baffle (56) is used to limit the sliding sleeve (52) and the magnetic shaft (54) on the one hand, and to isolate and limit the material being ground between the two grinding roller bodies (2) on the other hand; the auxiliary feeding device (5) before grinding also It includes a magnetic block (57), a base for alternating positive and negative magnets (58), and a base for alternating negative and positive magnets (59). The end of the magnetic block (57) is fixedly connected to the feeding rod (55). The base for alternating positive and negative magnets (58) and the base for alternating negative and positive magnets (59) are both fixedly connected to the top inside the body (1). The top of the magnetic block (57) is magnetically connected to the inner wall of the base for alternating positive and negative magnets (58) and the base for alternating negative and positive magnets (59).

2. A roller milling method for a high-pressure roller mill for recyclable crushed materials according to claim 1, characterized in that: The feeding device feeds the material into the machine body (1) through the feeding hopper (6). The power component drives the two grinding rollers (2) to rotate. The grinding rollers (2) grind the material on the roller surface. During the grinding, the grinding rollers (2) transmit power to the reciprocating screw (51) and the magnetic rotating toothed disc (31) through the pulley and belt at the end. When the reciprocating screw (51) rotates, it drives the sliding sleeve (52) which is slidably connected to its surface and limited by the slider to move only in a straight line. During the movement, the sliding sleeve (52) moves synchronously by magnetically attracting the magnetic shaft (54) through the magnetic force of the magnetic column (53). The magnetic shaft (54) drives the feeding rod (55) to move back and forth in a straight line in the machine body (1). During the movement, the material accumulated between the two grinding rollers (2) is scraped flat.

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