A pulverizer for reducing the particle size of artificial graphite raw material

Abstract

This invention discloses a pulverizer for reducing the particle size of artificial graphite raw materials, relating to the field of pulverizing and processing equipment. The pulverizer includes a casing and a crushing roller. The crushing roller is located inside the casing, and a vibrating screen is located below it. A return hopper is located at the output end of the vibrating screen. By incorporating an inserted vibrating screen into an existing pulverizer, the pulverized material is automatically screened. The return hopper at the output end of the vibrating screen collects material particles that do not meet processing requirements and conveys them back to the crushing roller via a conveyor belt for repeated pulverizing until the material particles meet the required particle size and pass through the vibrating screen. This reduces manual intervention in screening different materials and the need for repeated crushing, making the pulverizing equipment more suitable for the application requirements. Furthermore, reduced manual intervention increases the automation level of the equipment, which is beneficial for production.

Description

Technical Field

[0001] This invention relates to equipment for producing artificial graphite, specifically to a pulverizer for reducing the particle size of artificial graphite raw materials. Background Technology

[0002] Artificial graphite is mainly made from petroleum coke and needle coke, with coal tar pitch as a binder, and may also include other auxiliary materials. It is then mixed evenly and carbonized at high temperature. To ensure uniform mixing of the raw materials, various raw materials need to be processed into particles of a certain size.

[0003] Existing technology typically involves crushing the raw materials of artificial graphite using ordinary crushers. After manual screening to ensure that different raw materials meet the particle size requirements, they are then mixed. Existing general crushers can only reduce the particle size of materials through repeated processing and cannot adjust the crushing standards of the equipment according to processing requirements. The equipment has low intelligence and is relatively cumbersome to use.

[0004] To address this, those skilled in the art propose a pulverizer for reducing the particle size of artificial graphite raw materials, and design a pulverizing device applicable to the processing of materials with various pulverizing standards, which can be adjusted according to different pulverizing standards, has a high degree of automation, and is easy to operate. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a pulverizer for reducing the particle size of artificial graphite raw materials. An insertable vibrating screen is installed inside the machine casing to automatically screen the material for particle size. Combined with a return hopper located at the discharge end of the vibrating screen, materials that do not meet the particle size requirements are conveyed to the crushing rollers for repeated processing. When pulverizing materials with different particle size requirements, only a screen with appropriate mesh size needs to be set; minimal human intervention is required. The equipment can automatically perform multiple repeated pulverizations until the material particle size meets the processing needs.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pulverizer for reducing the particle size of artificial graphite raw materials, comprising a casing and a crushing roller, wherein the crushing roller is rotatably disposed inside the casing, the material to be processed is added to the casing, and the material is crushed by the rotation of the crushing roller.

[0007] A vibrating screen is installed at an incline below the crushing roller inside the machine housing. Material particles processed by the crushing roller fall onto the vibrating screen, and the screening and conveying of material particles are completed by the regular vibration of the vibrating screen.

[0008] A return hopper is located inside the casing at the discharge end of the vibrating screen. A conveyor belt is connected to one side of the return hopper. Material particles that cannot pass through the vibrating screen roll into the return hopper and are transferred to the crushing roller via the conveyor belt for repeated crushing operations. This ensures that the equipment can automatically process materials according to their processing requirements and reduces manual intervention.

[0009] Preferably, the inner wall of the machine casing is inclinedly fixedly provided with a discharge plate below the vibrating screen. Material particles passing through the vibrating screen fall onto the discharge plate and are output from the machine casing along the inclined discharge plate.

[0010] The inner wall of the machine casing is fixedly inclined with a feeding sloping plate above the crushing roller and corresponding to the return hopper. The inner wall of the machine casing is fixedly connected with a limiting block corresponding to the return hopper. The material in the return hopper is poured onto the feeding sloping plate by the limiting block. The material particles are crushed again by the crushing roller through the inclined feeding sloping plate. This process continues until the material particles meet the processing requirements, pass through the vibrating screen, and are output from the machine casing.

[0011] Preferably, the inner wall of the casing is fixedly connected to the vibrating screen via an installation slide rail. The vibrating screen passes through the side wall of the casing and is inclinedly slidably mounted below the crushing roller via the installation slide rail. The installation slide rail helps to tilt the vibrating screen within the casing, ensuring the corresponding installation of the vibrating screen with structures such as the return hopper.

[0012] A fixing block is fixedly connected to the side of the chassis, and a positioning pin is inserted into the side of the fixing block corresponding to the vibrating screen. The positioning pin is used to position the installed vibrating screen to prevent the vibrating screen from shifting during use, which would cause material particles that do not meet the processing requirements to pass through the vibrating screen.

[0013] Preferably, the vibrating screen includes a screen mesh, which is slidably mounted inside the machine housing via a sliding rail, and the screen mesh is used to screen the particle size of the material.

[0014] An advance rod is provided through the side of the mounting slide rail, and a return spring is sleeved on the side of the advance rod. The return spring presses against the advance rod, so that the advance rod is in close contact with the screen and has a certain advance movement space.

[0015] A camshaft is rotatably mounted inside the casing and below the feed rod. The camshaft is connected to a power component. Under the transmission action of the power component, the periodic rotation of the camshaft generates a periodic pushing action on the feed rod, which in turn generates a periodic vibration action on the screen through contact with the feed rod. The vibration of the screen is used to screen the particle size of the material. At the same time, the vibrating screen also prevents a large number of material particles from clogging the fine holes of the screen and preventing them from flowing into the return hopper.

[0016] Preferably, the advance rod passes through the side wall of the mounting slide rail and is slidably connected thereto. A clamping roller is provided at one end of the advance rod that passes through the mounting slide rail. The advance rod clamps against the side wall of the screen through the clamping roller. The advance rod clamps against the screen through the clamping roller at its end, which facilitates the disassembly and assembly of the screen and ensures stable installation.

[0017] The inner wall of the mounting slide rail is provided with an arc-shaped block corresponding to the advance of the roller. The arc-shaped block helps the screen pass through the advance rod's advance position and prevents the screen from deviating during installation and failing to pass through the advance rod's advance position.

[0018] Preferably, an installation block is fixedly connected to the side of the conveyor belt, an insulating column is fixedly installed inside the installation block, and a clamping spring is sleeved on the side of the insulating column. An insulating sleeve is fixed to the side of the return hopper corresponding to the insulating column, and a terminal post is correspondingly installed on the inner side of the insulating column and the insulating sleeve.

[0019] The terminal block installed by the insulating column and insulating sleeve can prevent short circuits caused by contact between the terminal block and the clamping spring. In addition, the clamping spring is set to clamp the insulating column and insulating sleeve, so that the control circuit of the conveyor belt is automatically adjusted by the change of its own mass of the return hopper, thereby completing the conveying control of material particles from the return hopper to the crushing roller.

[0020] Preferably, an adjusting nut is threaded onto the side of the insulating column, and the clamping spring is clamped onto the side of the insulating column by the adjusting nut. The installation position of the adjusting nut on the insulating column can be used to adjust the trigger threshold value of the conveyor belt control circuit caused by the change in the mass of the return hopper.

[0021] The two terminals are respectively electrically connected to the two stages of the conveyor belt control circuit. Multiple sets of terminals are connected in parallel. The control circuit of the conveyor belt is connected through the two terminals between the return hopper and the conveyor belt, so that the conveyor belt is automatically started to carry out material conveying and circulation after the material in the return hopper accumulates to a certain mass. Furthermore, any change in the mass of the return hopper can activate the control circuit of the conveyor belt.

[0022] Preferably, a baffle is slidably provided on the upper surface of the screen discharge end inside the casing. The baffle, in conjunction with the movement of the return hopper, automatically stops the material on the screen, preventing material loss during the conveying gap of the return hopper.

[0023] The side of the baffle is fixedly connected to a protrusion, and a spring is provided between the baffle and the inner wall of the machine box. After the return hopper loses its pressing effect on the baffle, the baffle automatically descends to close the screen output end.

[0024] A push rod is fixedly connected to the side of the return hopper. A wedge-shaped push block is inserted into the side of the push rod corresponding to the protrusion. A spring is also provided between the wedge-shaped push block and the push rod. When the return hopper moves to a position close to the output end of the screen, the return hopper presses against the protrusion through the wedge-shaped push block on the side of the push rod, causing the baffle to rise against the spring force and expose the output end of the screen. The material smoothly enters the return hopper from the screen. When the material mass in the return hopper exceeds the critical value, the control circuit of the conveyor belt is activated.

[0025] As the return hopper continues to rise, the wedge-shaped pusher overcomes the spring force on its side and passes the contact position with the protrusion. The stop block loses its pushing force and falls to press against the upper surface of the screen to seal it, until the next return hopper applies a pressing force to the stop block.

[0026] Preferably, the return hopper includes a main body, which is slidably connected to the conveyor belt. The main body, which is slidably disposed on the side of the conveyor belt, facilitates triggering the control circuit of the conveyor belt by changes in material mass.

[0027] The main body is hinged to a side plate on the side away from the conveyor belt. The side plate blocks the opening side of the main body, ensuring that the material accumulated in the main body will not slip out of the opening end, while facilitating the output of material from the return hopper at the feed ramp.

[0028] An arc-shaped plate is fixedly connected to the side plate near the main body. The side plate is slidably connected to the main body through the arc-shaped plate. The arc-shaped plate slides between the side plate and the main body as the side plate flips. The arc-shaped plate is coaxially installed with the hinge axis of the side plate. The side plate is used to limit and reset the flipping of the side plate.

[0029] Preferably, a U-shaped block is fixedly connected to the inner wall of the main body corresponding to the arc-shaped plate. The arc-shaped plate is slidably connected to the main body through the U-shaped block, and the sliding angle of the arc-shaped plate is limited by the U-shaped block.

[0030] An end block is fixedly connected to the side of the arc-shaped plate away from the side plate. A spring is provided between the end block and the U-shaped block. After the side plate loses the restraining and limiting effect of the limiting block, the side plate and the arc-shaped plate return to their original positions under the elastic force of the spring, and the opening side of the main body is closed again.

[0031] This invention discloses a pulverizer for reducing the particle size of artificial graphite raw materials, which has the following beneficial effects:

[0032] 1. This pulverizer for reducing the particle size of artificial graphite raw materials incorporates an interlocking vibrating screen within an existing pulverizer. This screen automatically filters the pulverized material. A return hopper at the output end of the vibrating screen collects particles that do not meet processing requirements. These particles are then conveyed back to the crushing rollers via a conveyor belt for repeated pulverization until the material particles meet the required particle size and pass through the vibrating screen. This reduces manual intervention in screening different materials and the need for repeated crushing, making the pulverizing equipment more suitable for the application. Furthermore, reduced manual intervention increases the automation level of the equipment, which is beneficial for production.

[0033] 2. This pulverizer for reducing the particle size of artificial graphite raw materials has a screen installed inside the machine casing that can be replaced according to the processing requirements of the material. Combined with the return hopper, the pulverizer can automatically process materials with different processing requirements without the need for manual screening and repeated crushing of material particles, ensuring the particle size requirements of the processed material are met. The vibrating screen is equipped with a camshaft to achieve periodic vibration screening, ensuring the movement of material on the screen.

[0034] 3. This pulverizer for reducing the particle size of artificial graphite raw materials has a return hopper that slides on the side of the conveyor belt. The change in the mass of the return hopper triggers the control circuit of the conveyor belt. It is equipped with insulating posts and insulating sleeves to protect the internal terminals from short circuits caused by contact with the external structure. In addition, the tension of the retaining spring can be adjusted by adjusting the nut, thereby adjusting the mass of the return hopper triggering the control circuit of the conveyor belt.

[0035] 4. This pulverizer for reducing the particle size of artificial graphite raw materials has a baffle at the screen discharge end. During the alternating gaps when the return hopper moves upward, the screen discharge end is blocked to prevent material loss from the screen when the return hopper is not at the discharge end. In addition, a hinged side plate structure is set on the side of the return hopper near the screen. The hinged side plate structure facilitates the pouring of materials in the return hopper. The side plate is hinged to the open side of the main body through an arc plate to ensure accurate rotation and opening and closing of the side plate relative to the main body. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the internal structure of the chassis of the present invention;

[0038] Figure 2 This is a schematic diagram of the material inlet and outlet structure of the chassis of the present invention;

[0039] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the vibrating screen structure at point A;

[0040] Figure 4 This is a schematic diagram of the return hopper structure and its installation structure with the conveyor belt of the present invention;

[0041] Figure 5 For the present invention Figure 4 Schematic diagram of the return hopper structure at point B;

[0042] Figure 6 This is a schematic diagram of the structure of the return hopper mass trigger conveyor belt control circuit of the present invention;

[0043] Figure 7 This is a circuit diagram showing the control circuit of multiple return hoppers on the conveyor belt according to the present invention.

[0044] In the diagram: 1. Chassis; 2. Crushing roller; 3. Vibrating screen; 301. Screen mesh; 302. Feed rod; 303. Return spring; 304. Camshaft; 4. Return hopper; 401. Main body; 402. Side plate; 403. Arc plate; 5. Conveyor belt; 6. Discharge plate; 7. Feeding inclined plate; 8. Mounting slide rail; 9. Fixing block; 10. Positioning pin; 11. Pressing roller; 12. Arc block; 13. Mounting block; 14. Insulating column; 15. Pressing spring; 16. Insulating sleeve; 17. Terminal post; 18. Adjusting nut; 19. Baffle; 20. Protrusion; 21. Push rod; 22. Wedge-shaped push block; 23. Limiting block; 24. U-shaped block; 25. End block. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, 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.

[0046] This invention discloses a pulverizer for reducing the particle size of artificial graphite raw materials;

[0047] According to the appendix Figure 1As shown, the machine includes a housing 1 and crushing rollers 2. The crushing rollers 2 are installed inside the housing 1. The material input into the housing 1 is crushed by the rotation of the two crushing rollers 2. A vibrating screen 3 is installed below the crushing rollers 2. The material crushed by the crushing rollers 2 falls onto the vibrating screen 3 and is screened for particle size by vibration. A return hopper 4 is installed at the output end of the vibrating screen 3. The material that cannot pass through the vibrating screen 3 falls into the return hopper 4 for collection. A conveyor belt 5 is installed inside the housing 1. The return hopper 4 is conveyed to the top of the crushing rollers 2 by the conveyor belt 5, and the material that does not meet the processing requirements is poured back into the crushing rollers 2 for repeated crushing.

[0048] According to the appendix Figure 2 As shown, a discharge plate 6 is fixedly and inclined inside the machine housing 1 and below the vibrating screen 3, and a discharge port is opened on the side of the machine housing 1 corresponding to the discharge plate 6. The material that meets the processing particle size requirements of the vibrating screen 3 falls onto the inclined discharge plate 6 and is output from the machine housing 1.

[0049] An inclined feeding plate 7 is installed on the inner side of the casing 1 between the crushing roller 2 and the conveyor belt 5. The material transported back by the conveyor belt 5 is poured onto the feeding plate 7 and then fed back into the crushing roller 2 for repeated crushing.

[0050] The inner wall of the casing 1 is fixedly equipped with a mounting slide rail 8. The vibrating screen 3 is inserted and installed inside the casing 1 through the mounting slide rail 8. When processing materials with different processing requirements, the particle size requirement of the output material is automatically controlled by changing the vibrating screen 3 with different aperture.

[0051] A fixing block 9 is fixedly installed on the side of the casing 1 corresponding to the vibrating screen 3. A positioning pin 10 is inserted into the fixing block 9 to position the vibrating screen 3 which is inserted into the casing 1. This prevents the vibrating screen 3 from falling out of its positioning position due to mechanical vibration during use, which would cause gaps between the vibrating screen 3 and other components, allowing materials that do not meet the processing particle size requirements to pass through.

[0052] According to the appendix Figure 3 As shown, the vibrating screen 3 includes a screen 301. The screen 301 is replaced according to the particle size requirements of the processed material. The screen 301 is installed by inserting it into the mounting slide rail 8 through the insertion groove on the side of the machine housing 1. An advance rod 302 is provided on the side of the mounting slide rail 8. A return spring 303 is sleeved on the side of the advance rod 302. The screen 301 is pressed and positioned by the return spring 303 pressing against the advance rod 302.

[0053] A camshaft 304 is also provided below the feed rod 302. The rotation of the camshaft 304 periodically drives the feed rod 302 to extend and retract. The extension and retraction of the feed rod 302 causes the screen 301, which is in close contact with it, to vibrate periodically. The vibration of the screen 301 enables the particle size screening of the material above, and also helps larger particles slide down the screen 301 into the return hopper 4, avoiding the accumulation and blockage of a large number of material particles on the screen 301.

[0054] The end of the guide rod 302, which passes through the mounting slide rail 8, is equipped with a clamping roller 11. The guide rod 302 contacts and clamps the screen 301 through the clamping roller 11. In addition, an arc-shaped block 12 is also provided on the inner side of the mounting slide rail 8 corresponding to the guide rod 302. This works in conjunction with the guide rod 302 to provide a retractable and vibrating clamping structure for the screen 301. On the one hand, this ensures that the screen 301 can pass smoothly through the clamping position between the guide rod 302 and the arc-shaped block 12 when the screen 301 is installed. On the other hand, it avoids damage to the screen 301 caused by frequent vibration of the guide rod 302 clamping the screen 301.

[0055] According to the appendix Figure 4-5 As shown, the return hopper 4 includes a main body 401, which is slidably disposed on the side of the conveyor belt 5. The side of the main body 401 near the vibrating screen 3 is set as an open structure to facilitate the material in the main body 401 to be poured onto the feed inclined plate 7. A side plate 402 is hinged to the open surface for sealing. As the main body 401 rises, the hinged side plate 402 contacts and presses against the limiting block 23 fixed on one side of the crushing roller 2. Under the action of the limiting block 23, the hinged side plate 402 is flipped, exposing the opening of the main body 401, and the material is poured onto the feed inclined plate 7 from the opening side.

[0056] An arc-shaped plate 403 is fixedly connected to the side of the side plate 402. The side plate 402 is slidably installed with the main body 401 through the arc-shaped plate 403. Under the guidance and limiting effect of the arc-shaped plate 403, the side plate 402 is hinged and reset on the open side of the main body 401.

[0057] According to the appendix Figure 4-6 As shown, mounting blocks 13 are fixedly connected to the side of the conveyor belt 5. The return hopper 4 is slidably mounted on the side of the conveyor belt 5 through the two symmetrical mounting blocks 13. A sliding groove is opened on the opposite side of the two mounting blocks 13. An insulating post 14 is fixedly connected to the inner bottom surface of the sliding groove inside the mounting block 13. A terminal post 17 is fixedly installed inside the insulating post 14. The terminal post 17 is electrically connected to one electrode of the control circuit of the conveyor belt 5. The insulating post 14 protects the internal terminal post 17 from short-circuiting with the external structure.

[0058] A slider is fixedly connected to the side of the return hopper 4. The slider extends into the inner side of the mounting block 13 for sliding installation of the return hopper 4. An insulating sleeve 16 is fixedly connected to the side of the slider corresponding to the insulating post 14. The insulating sleeve 16 is sleeved on the outside of the insulating post 14.

[0059] An adjusting nut 18 is threaded onto the side of the insulating column 14, and a retaining spring 15 is tightly fitted onto it via the adjusting nut 18. The retaining spring 15 is tightly fitted onto the outside of the insulating column 14 and the insulating sleeve 16 via the adjusting nut 18. Terminals 17 are correspondingly provided on the inner sides of the insulating column 14 and the insulating sleeve 16. The two terminals 17 are electrically connected to the positive and negative poles of the control circuit of the conveyor belt 5, respectively. The retaining spring 15 presses against the insulating sleeve 16 to separate the upper and lower terminals 17. As the mass of the return hopper 4 increases, the retaining spring 15 is compressed, and the upper and lower terminals 17 come into contact, connecting the control circuit of the conveyor belt 5. Then, the return hopper 4 loaded with a certain amount of material is conveyed to the top of the crushing roller 2 via the conveyor belt 5.

[0060] Multiple return hoppers 4 are connected in parallel to the control circuit of the conveyor belt 5. The change in the mass of each return hopper 4 can control the movement of the conveyor belt 5. The multiple return hoppers 4 can alternately store material at the discharge end of the screen 301. When the material is conveyed to the return hopper 4, the mass of the return hopper 4 decreases and the control circuit of the conveyor belt 5 is disconnected. At this time, another return hopper 4 moves to the discharge end of the screen 301 and continues to be used.

[0061] A baffle 19 is slidably installed on the upper surface of the discharge end of the screen 301 on the inner wall of the housing 1. The baffle 19, in conjunction with the alternating gaps of multiple return hoppers 4, blocks the discharge of the screen 301. A guide rail is fixedly installed on the inner wall of the housing 1 corresponding to the baffle 19. The baffle 19 moves up and down along the guide rail. A spring is installed between the upper surface of the baffle 19 and the inner wall of the housing 1. The spring ensures that the baffle 19 will tightly block the discharge end of the screen 301 after the external force is removed.

[0062] A protrusion 20 is fixedly provided on the side of the baffle 19. A push rod 21 is fixedly connected to the upper surface of the return hopper 4 near the screen 301. A wedge-shaped push block 22 is provided on the side of the push rod 21 through a spring. As the return hopper 4 moves upward, the wedge-shaped push block 22 presses against the protrusion 20, thereby causing the baffle 19 to move upward to output the material on the screen 301.

[0063] As the amount of material accumulated in the return hopper 4 increases, the mass of the return hopper 4 increases. The return hopper 4 applies pressure to the clamping spring 15 through the insulating sleeve 16, causing the clamping spring 15 to deform and compress. When the mass of the return hopper 4 reaches a certain limit, the upper and lower terminals 17 contact, connecting the control circuit of the conveyor belt 5, so that the conveyor belt 5 carries the return hopper 4 to move upward.

[0064] Since the baffle 19 has moved to the upper limit and cannot move further upward, the wedge-shaped pusher 22 compresses the spring backward under the squeezing force between it and the protrusion 20, causing it to advance. At this time, the return hopper 4 rises and disengages from the discharge position of the screen 301, and the screen 301 can no longer discharge material. The baffle 19 disengages from the clamping force of the wedge-shaped pusher 22, and the baffle 19 loses its pushing force and falls to block the discharge end of the screen 301.

[0065] Another replacement return hopper 4 gradually approaches the discharge end of the screen 301 from below as the conveyor belt 5 moves from below. As the wedge-shaped pusher 22 on the side of the replacement return hopper 4 presses against the protrusion 20, it applies a pushing force to the baffle 19 again, pushing the baffle 19 upward to expose the discharge end of the screen 301 again. At this time, the new return hopper 4 moves to the discharge end of the screen 301 to receive the material.

[0066] The rising return hopper 4 is pressed against the limiting block 23 fixed to the inner wall of the machine box 1 by the wedge-shaped pusher 22. Under the action of the limiting block 23, the side plate 402 hinged on one side of the return hopper 4 is flipped, and the material inside the main body 401 is poured onto the feeding inclined plate 7. As the mass of the return hopper 4 decreases, the control circuit of the conveyor belt 5 is disconnected. At this time, the new return hopper 4 moves to the storage position, realizing the recycling of the equipment. Of course, the conveyor belt 5 can also be manually controlled to avoid a small amount of material failing to trigger the automatic operation of the control circuit.

[0067] A U-shaped block 24 is fixedly installed on the inner wall of the main body 401 corresponding to the arc plate 403. The arc plate 403 slides inside the U-shaped block 24 as the side plate 402 rotates. In order to avoid the side plate 402 from detaching from the main body 401, an end block 25 is also fixedly installed on the side of the end of the arc plate 403 to ensure the accurate installation relationship between the side plate 402 and the main body 401.

[0068] This pulverizer for reducing the particle size of artificial graphite raw materials incorporates a vibrating screen 3 within an existing pulverizer. This screen automatically filters the pulverized material. A return hopper 4 at the output end of the vibrating screen 3 collects material particles that do not meet processing requirements. These particles are then conveyed again to the crushing roller 2 via a conveyor belt 5 for repeated pulverization until the material particles meet the required particle size and pass through the vibrating screen 3. This reduces manual intervention in screening different materials and the need for repeated crushing, making the pulverizing equipment more suitable for the application requirements. Furthermore, the reduced manual intervention increases the automation level of the equipment, which is beneficial for production.

[0069] Furthermore, the screen 301 installed inside the casing 1 can be replaced according to the processing requirements of the processed material. Combined with the return hopper 4, the crushing equipment can automatically process materials with different processing requirements without the need for manual screening and repeated crushing of material particles, ensuring the particle size requirements of the processed material. The vibrating screen 3 is equipped with a camshaft 304 to achieve periodic vibration screening, ensuring the movement of materials on the screen 301.

[0070] Furthermore, the return hopper 4 is slidably installed on the side of the conveyor belt 5. The change in the mass of the return hopper 4 triggers the control circuit of the conveyor belt 5. Insulating posts 14 and insulating sleeves 16 are provided to protect the internal terminal 17 from short circuits caused by contact with the external structure. In addition, the elasticity of the clamping spring 15 can be adjusted by adjusting the nut 18, thereby adjusting the mass of the return hopper 4 that triggers the control circuit of the conveyor belt 5.

[0071] In addition, a baffle 19 is provided at the discharge end of the screen 301 to block the discharge end of the screen 301 during the alternating gaps when the return hopper 4 moves upward, so as to avoid material loss of the screen 301 during the period when the return hopper 4 is not at the discharge end. In addition, a hinged side plate 402 structure is provided on the side of the return hopper 4 near the screen 301. The hinged side plate 402 structure facilitates the pouring of materials in the return hopper 4. The side plate 402 is hinged to the open side of the main body 401 through the arc plate 403 to ensure the accurate rotation and opening and closing of the side plate 402 relative to the main body 401.

[0072] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A pulverizer for reducing the particle size of artificial graphite raw materials, comprising a casing (1) and a crushing roller (2), wherein the crushing roller (2) is rotatably disposed inside the casing (1), characterized in that: A vibrating screen (3) is inclinedly arranged inside the machine box (1) below the crushing roller (2). A return hopper (4) is arranged inside the machine box (1) at the discharge end of the vibrating screen (3). A conveyor belt (5) is connected to one side of the return hopper (4). The vibrating screen (3) vibrates and screens the crushed particles. The return hopper (4) collects particles that do not meet the particle size requirements and repeatedly conveys them to the crushing roller (2) for repeated processing. The side of the conveyor belt (5) is fixedly connected to an installation block (13), an insulating column (14) is fixedly installed inside the installation block (13), and a retaining spring (15) is sleeved on the side of the insulating column (14). An insulating sleeve (16) is fixed on the side of the return hopper (4) corresponding to the insulating column (14), and a terminal post (17) is provided on the inner side of the insulating column (14) and the insulating sleeve (16). The side of the insulating post (14) is threaded with an adjusting nut (18), and the clamping spring (15) is clamped to the side of the insulating post (14) through the adjusting nut (18). The two terminals (17) are respectively electrically connected to the two-stage control circuit of the conveyor belt (5), and multiple sets of terminals (17) are connected in parallel. A baffle (19) is slidably provided on the upper surface of the discharge end of the screen (301) inside the machine box (1). A protrusion (20) is fixedly connected to the side of the baffle (19). A spring is provided between the baffle (19) and the inner wall of the machine box (1). A push rod (21) is fixedly connected to the side of the return hopper (4). A wedge-shaped push block (22) is inserted into the side of the push rod (21) corresponding to the protrusion (20). A spring is also provided between the wedge-shaped push block (22) and the push rod (21). The return hopper (4) includes a main body (401), which is slidably connected to the conveyor belt (5). A side plate (402) is hinged to the side of the main body (401) away from the conveyor belt (5). An arc plate (403) is fixedly connected to the side plate (402) near the main body (401). The side plate (402) is slidably connected to the main body (401) through the arc plate (403). A U-shaped block (24) is fixedly connected to the inner wall of the main body (401) corresponding to the arc plate (403). The arc plate (403) is slidably connected to the main body (401) through the U-shaped block (24). An end block (25) is fixedly connected to the side of the arc plate (403) away from the side plate (402). A spring is provided between the end block (25) and the U-shaped block (24).

2. The pulverizer for reducing the particle size of artificial graphite raw materials as described in claim 1, characterized in that: The inner wall of the machine box (1) is inclined and fixedly provided with a discharge plate (6) below the vibrating screen (3). The inner wall of the machine box (1) is inclined and fixedly provided with a feed sloping plate (7) above the crushing roller (2) corresponding to the return hopper (4). The inner wall of the machine box (1) is fixedly connected with a limit block (23) corresponding to the return hopper (4).

3. The pulverizer for reducing the particle size of artificial graphite raw materials as described in claim 1, characterized in that: The inner wall of the housing (1) is fixedly connected to the vibrating screen (3) with an installation slide rail (8). The vibrating screen (3) passes through the side wall of the housing (1) and is inclined and slidably arranged below the crushing roller (2) through the installation slide rail (8). A fixing block (9) is fixedly connected to the side of the housing (1). A positioning pin (10) is inserted into the side of the fixing block (9) corresponding to the vibrating screen (3).

4. The pulverizer for reducing the particle size of artificial graphite raw materials as described in claim 1, characterized in that: The vibrating screen (3) includes a screen (301), which is slidably disposed inside the housing (1) via a mounting slide rail (8). An advance rod (302) is provided through the side of the mounting slide rail (8), and a return spring (303) is sleeved on the side of the advance rod (302). A camshaft (304) is rotatably disposed inside the housing (1) and below the advance rod (302), and the camshaft (304) is connected to a power component.

5. The pulverizer for reducing the particle size of artificial graphite raw materials as described in claim 4, characterized in that: The advance rod (302) passes through the side wall of the mounting slide rail (8) and is slidably connected thereto. The end of the advance rod (302) passing through one end of the mounting slide rail (8) is provided with a pressing roller (11). The advance rod (302) presses against the side wall of the screen (301) through the pressing roller (11). The inner wall of the mounting slide rail (8) is provided with an arc-shaped block (12) corresponding to the pressing roller (11).

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