Residual material grading recycling mandrel grinding machine for relay spare and accessory parts

Abstract

The invention relates to an excess material grading recovery mandrel grinding machine for relay spare and accessory parts, and belongs to the field of mandrel grinding. And the strip roller is rotationally mounted in the treatment box. According to the sewage treatment device, the material carrying roller and the material suction roller are mutually extruded and matched, the material carrying roller picks up solid waste (including scrap iron and sludge) from sewage, the solid waste on the surface of the material carrying roller is dewatered to form pressed powder through mutual extrusion of the material carrying roller and the material suction roller, and meanwhile before the solid waste forms the pressed powder, the material suction roller has magnetism, so that the solid waste is prevented from falling off. According to the sewage treatment device, substances such as iron powder in solid wastes can be sucked away, so that the iron powder can be recycled subsequently, and subsequent pressed powder is scraped by the mud scraping hopper for centralized treatment, so that the content of the solid wastes in the sewage is greatly reduced, the treated sewage can be recycled and reused for water cooling of shaft blanks and grinding rollers, water resources are saved, and the problem that the sewage is directly discharged to pollute the environment is solved.

Description

Technical Field

[0001] This application relates to the field of mandrel grinding, and in particular to a mandrel grinding machine for graded recycling of residual materials of relay parts. Background Technology

[0002] Mandrels are a common component in certain products and equipment (such as automobiles). The most common material is iron. The manufacturing process of mandrels involves placing the mandrel blank raw material on a grinding machine for grinding, making the surface of the mandrel blank smooth, and gradually shaping it into a specified cylinder.

[0003] During the grinding process, cooling water needs to be continuously sprayed onto the mandrel blank and grinding roller. In order to save costs, current mandrel grinding equipment generally discharges the used cooling water directly. However, the powdery waste (such as iron powder) generated during the mandrel grinding process will also be carried away by the cooling water.

[0004] In addition, to protect the raw material of the shaft blank and prevent rust, a thin layer of grease is applied to the surface of the raw material of the shaft blank. The grease is sticky, and during the transfer, storage and distribution of the raw material of the shaft blank, it inevitably picks up a lot of impurities. During the subsequent grinding process of the raw material of the shaft blank, these impurities are mixed with the grease and carried away by the cooling water. Therefore, the cooling water after use contains iron powder and sludge (a mixture of grease, dust and other impurities).

[0005] It is evident that the wastewater generated by mandrel grinding equipment has a high solids content, and direct discharge of it would cause serious environmental pollution. Summary of the Invention

[0006] To address the problem of direct discharge of wastewater from current mandrel grinding equipment, which pollutes the environment, this application provides a mandrel grinding machine for graded recycling of residual materials from relay parts.

[0007] In one aspect of this disclosure, a spindle grinding machine for graded recycling of residual materials from relay components is proposed, comprising: The treatment tank has an inlet and an outlet. The conveyor roller is rotatably installed inside the treatment box and defines a pre-treatment zone and a post-treatment zone separated by the conveyor roller inside the treatment box. The water inlet end is connected to the pre-treatment zone and the water outlet end is connected to the post-treatment zone. The conveyor roller is constructed to block the sewage in the pre-treatment zone as it flows to the post-treatment zone, so as to slow down the flow speed of the sewage. A suction roller is positioned above the conveyor roller and is tactilely connected to it. The outer circumferential surface of the suction roller is magnetic. Under the push of the conveyor roller, the suction roller can move away from the conveyor roller while maintaining tactile connection with it. Rotating components are connected to the conveyor belt roller drive; A sludge scraper is located in the post-processing area. One end of the sludge scraper contacts the outer circumferential surface of the conveyor roller to clean the outer circumferential surface of the conveyor roller.

[0008] By adopting the above technical solution, the conveyor roller and the suction roller squeeze and cooperate with each other. The conveyor roller picks up powdery waste from the sewage. Through the mutual squeezing of the conveyor roller and the suction roller, the powdery waste on the surface of the conveyor roller is dehydrated and forms a powder cake. At the same time, the suction roller is magnetic and can attract iron powder and other substances from the powder cake so that the iron powder can be recycled later. The remaining powder cake is scraped off by the sludge scraper and centrally processed. In this way, the solid content in the sewage is greatly reduced, and the treated sewage can be recycled and reused for shaft blanks and water cooling of grinding rollers, saving resources and avoiding the problem of direct discharge of sewage and pollution of the environment.

[0009] Preferably, the processing box is provided with a guide post, the suction roller is slidably connected to the guide post, and the suction roller slides along the guide post under the push of the conveyor roller.

[0010] By adopting the above technical solution, the suction roller can slide smoothly.

[0011] Preferably, a spring is provided on the guide post, one end of which is connected to the suction roller, and the spring is configured to keep the suction roller and the conveyor roller pressed together.

[0012] By adopting the above technical solution, the suction roller and the conveyor roller are kept in contact, thereby dehydrating the powdery waste on the surface of the conveyor roller to form a powder cake.

[0013] Preferably, the water inlet is connected to the water outlet pipe, and the water outlet is connected to the drain pipe.

[0014] By adopting the above technical solution, it is convenient for sewage to enter and exit the treatment tank.

[0015] Preferably, the sludge scraper is inclined, with the upward-inclined end of the sludge scraper contacting the outer circumferential surface of the conveyor roller, and the downward-inclined end of the sludge scraper is provided with a receiving box.

[0016] By adopting the above technical solution, the outer circumference of the conveyor roller is scraped clean, and the scraped-off powder cake is collected.

[0017] Preferably, the water outlet is connected to a water storage tank, and the water storage tank is connected to a return water pipe.

[0018] By adopting the above technical solution, the treated wastewater can be collected for recycling.

[0019] Preferably, a mandrel grinding machine for graded recycling of residual materials of relay parts also includes a main body of the equipment and a vibratory feeder; The main body of the equipment is connected to the water inlet. The main body of the equipment has a pair of grinding rollers and a cooling water component located above the connection between the pair of grinding rollers. The cooling water component is configured to spray cooling water onto the connection between the pair of grinding rollers. One side of the pair of grinding rollers is provided with: Push-pull device one, which is connected to a slide, the upper surface of which is constructed with a straight slide groove, the straight slide groove being driven by push-pull device one to move closer to or further away from the connection of a pair of grinding rollers; A bearing plate is located next to the slide, and a pusher block is provided on its upper surface. The vibratory feeder is configured to place the bearing blank in the area between the upper surface of the bearing plate and the slide by pushing the pusher block. The bearing plate is configured such that one end of the bearing plate is in contact with the slide, and the upper surface of the bearing plate near the slide is flush with the upper surface of the slide, so that the pusher block can push the bearing blank smoothly from the bearing plate to the slide. The first feeding device is connected to the pusher block and is used to drive the pusher block to move the shaft blank into the straight slide groove; Push-pull device two is connected to the slide. The push-pull device two is configured to push the shaft blank in the straight slide to the grinding position at the connection of the pair of grinding rollers when the straight slide is close to the connection of the pair of grinding rollers. A feeding device is located below the carriage. The feeding device is configured such that one end is close to the connection of a pair of grinding rollers to receive the mandrel falling from the grinding position. The second pushing device is located on the other side of a pair of grinding rollers and is used to push the mandrel away from the grinding position and fall onto the conveying device.

[0020] By adopting the above technical solution, the wastewater generated during the mandrel grinding process is treated using a wastewater treatment device, iron powder and other metal substances are recovered, and the treated wastewater is sent back to the grinding equipment for reuse, saving resources and avoiding the problem of direct discharge of wastewater and environmental pollution.

[0021] Preferably, the water outlet is connected to the cooling water component.

[0022] By adopting the above technical solutions, the treated wastewater can be recycled and reused.

[0023] Preferably, the lower surface of the pusher block is provided with a material receiving groove for accommodating the shaft blank on the side near the slide.

[0024] By adopting the above technical solution, it is easy for the pusher block to push the shaft blank to move smoothly on the surface of the shaft carrier plate.

[0025] Preferably, the other end of the conveying device is provided with a dropping hopper and a receiving box 1. The dropping hopper is located above the receiving box 1. The dropping hopper is inclined, with its inclined upward end close to the conveying device to receive the mandrel dropped by the conveying device. The inclined downward end of the dropping hopper is located inside the receiving box 1.

[0026] By adopting the above technical solution, the finished mandrels after polishing are collected and stored.

[0027] In summary, this application includes at least one of the following beneficial technical effects: This application discloses a mandrel grinding machine for graded recycling of residual materials from relay parts. The machine utilizes a conveyor roller and a suction roller that work together to press and squeeze solid waste (including iron filings and sludge) from wastewater. The pressing action between the conveyor roller and the suction roller dehydrates the solid waste on the surface of the conveyor roller, forming a powder cake. Simultaneously, before the powder cake forms, the suction roller is magnetic, attracting iron powder and other substances from the solid waste for subsequent recycling. The powder cake is then scraped off by a scraper bucket for centralized processing. This significantly reduces the solid waste content in the wastewater, allowing the treated wastewater to be recycled for use in mandrel blank and grinding roller water cooling, saving water resources and avoiding the problem of direct wastewater discharge polluting the environment.

[0028] The present application discloses a mandrel grinding machine for graded recycling of residual materials of relay parts. Not only can the treated cooling water be reused, but most importantly, the manufacturing cost is low and does not increase the cost of mandrel grinding. It is in line with the concept of green factory development and has broad prospects for promotion. Attached Figure Description

[0029] Figure 1 This application presents a schematic diagram of the structure of a mandrel grinding machine for graded recycling of residual materials from relay parts. Figure 1 .

[0030] Figure 2 yes Figure 1 Enlarged view of part A in the image.

[0031] Figure 3 This application presents a schematic diagram of the structure of a mandrel grinding machine for graded recycling of residual materials from relay parts. Figure 2 .

[0032] Figure 4 This is a schematic diagram of the wastewater treatment device of this application.

[0033] Figure 5 This is an internal structural diagram of the wastewater treatment device of this application.

[0034] Explanation of reference numerals in the attached drawings: 1. Vibratory feeder; 2. Frame; 3. Slide; 31. Straight slide; 4. Push-pull device one; 5. Push-pull device two; 6. Shaft blank; 7. Shaft carrier plate; 8. Pushing device one; 9. Push block; 91. Material trough; 10. Discharge channel; 11. Main body of equipment; 12. Grinding roller; 13. Pushing device two; 14. Conveying device; 15. Drop hopper; 16. Receiving box one; 17. Water outlet pipe; 18. Processing box; 19. Material roller; 20. Rotating component; 21. Guide column; 22. Spring; 23. Suction roller; 24. Sludge scraper hopper; 25. Receiving box two; 26. Drainage pipe; 27. Return water pipe; 28. Water storage tank; 29. ​​Pre-processing zone; 30. Post-processing zone; 32. Cooling water component. Detailed Implementation

[0035] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0036] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0037] In one aspect of this disclosure, a wastewater treatment device is proposed, such as Figure 4 and Figure 5 As shown, the wastewater treatment device includes: a treatment tank 18, a conveying roller 19, a suction roller 23, a rotating component 20, and a sludge scraper 24. Figure 5 The arrows indicate the rotation direction of the conveyor roller 19 and the suction roller 23. The treatment tank 18 has an inlet and an outlet. The inlet is configured to supply wastewater (such as cooling water mixed with iron filings and sludge) into the treatment tank 18, and the outlet is configured to allow the wastewater in the treatment tank 18 to flow out.

[0038] Furthermore, to facilitate the connection between the wastewater treatment device and the mandrel grinding equipment, so that the wastewater generated by the mandrel grinding equipment can directly flow into the wastewater treatment device for treatment, such as... Figure 4 and Figure 5 As shown, the water inlet and water outlet are mounting holes on the wall of the treatment tank 18. The mounting holes are used to install the water outlet pipe 17 and the water outlet pipe 26, so that the water inlet is connected to the water outlet pipe 17 and the water outlet is connected to the water outlet pipe 26.

[0039] In this embodiment, as Figure 4 and Figure 5As shown, the conveyor roller 19 is rotatably installed inside the treatment box 18, and defines a pre-treatment area 29 and a post-treatment area 30 separated by the conveyor roller 19 inside the treatment box 18. The inlet end is connected to the pre-treatment area 29, and the outlet end is connected to the post-treatment area 30. With this design, the wastewater to be treated in the inlet end enters the pre-treatment area 29, the treated wastewater flows into the post-treatment area 30, and then is discharged through the outlet end.

[0040] Correspondingly, the conveyor roller 19 is configured to block and treat the sewage as it flows from the pre-treatment zone 29 to the post-treatment zone 30. The purpose of blocking the sewage is to slow down the flow rate of the sewage, so that the solid waste in the sewage can adhere to the conveyor roller 19 and be carried away by the conveyor roller 19 to separate it from the sewage, that is, to treat the sewage.

[0041] In this embodiment, as Figure 4 and Figure 5 As shown, the suction roller 23 is located above the conveyor roller 19 and is tactilely connected to the conveyor roller 19. Therefore, the rotation of the conveyor roller 19 drives the suction roller 23 to rotate. The outer circumferential surface of the suction roller 23 is magnetic, thereby sucking away some metal powder (such as iron) from the solid waste attached to the surface of the conveyor roller 19. This design maximizes the utilization of the value of wastewater, recovers iron powder from the wastewater, and expands economic benefits.

[0042] Furthermore, the suction roller 23 can move away from the conveyor roller 19 under the push of the conveyor roller 19 and remain in rolling connection with the conveyor roller 19. That is, as the conveyor roller 19 rotates and drives the suction roller 23 to rotate, as more and more iron powder is adsorbed on the surface of the suction roller 23, the distance between the suction roller 23 and the conveyor roller 19 gradually increases. At the same time, the suction roller 23 still remains in rolling connection with the conveyor roller 19. The increase in distance is driven by the support of the conveyor roller 19. Therefore, the suction roller 23 can move away from the conveyor roller 19 under the push of the conveyor roller 19 and remain in rolling connection with the conveyor roller 19.

[0043] To ensure that the suction roller 23 moves smoothly away from the conveyor roller 19 under the push of the conveyor roller 19, and after removing the iron powder from its surface, the suction roller 23 moves smoothly back to the conveyor roller 19 and returns to its original position, as follows: Figure 4 and Figure 5 As shown, the processing box 18 is fixedly provided with a guide post 21, and the suction roller 23 is slidably connected to the guide post 21. The suction roller 23 slides along the guide post 21 under the push of the conveyor roller 19.

[0044] Furthermore, such as Figure 4As shown, a spring 22 is provided on the guide post 21. One end of the spring 22 is connected to the suction roller 23. The spring 22 is configured to keep the suction roller 23 and the conveyor roller 19 pressed together. That is, the spring 22 is always in a compressed state to push the suction roller 23 and the conveyor roller 19 to keep pressed together. The purpose of this design is to squeeze the solid waste (which does not contain iron, because the iron powder in the solid waste has been sucked away by the suction roller 23 before the solid waste is pressed) on the surface of the conveyor roller 19, so that it is dehydrated and forms a powder cake, which is convenient to remove the powder cake from the surface of the conveyor roller 19 later.

[0045] In this embodiment, as Figure 4 and Figure 5 As shown, the sludge scraper 24 is located in the post-processing area 30. One end of the sludge scraper 24 contacts the outer circumferential surface of the conveyor roller 19 to scrape the outer circumferential surface of the conveyor roller 19 clean.

[0046] In this embodiment, as Figure 4 and Figure 5 As shown, the rotating component 20 is connected to the conveyor roller 19 to drive the conveyor roller 19 to rotate.

[0047] In practice, the rotating component 20 can be a motor.

[0048] As can be seen, the aforementioned construction of the conveyor roller 19 to treat wastewater during the flow of wastewater from the pre-treatment zone 29 to the post-treatment zone 30 means that the conveyor roller 19 and the suction roller 23 squeeze and cooperate with each other. The conveyor roller 19 carries away solid waste (including iron filings and sludge) from the wastewater. Through the mutual squeezing of the conveyor roller 19 and the suction roller 23, the solid waste on the surface of the conveyor roller 19 is dehydrated and forms a powder cake. At the same time, before the solid waste forms a powder cake, the suction roller 23 is magnetic and can attract iron powder and other substances in the solid waste so that the iron powder can be recycled later. The powder cake is then scraped off by the sludge scraper 24 and centrally processed. In this way, the solid waste content in the treated wastewater is greatly reduced, and the treated wastewater can be recycled and reused for water cooling of the shaft blank 6 and the grinding roller 12, saving water resources and avoiding the problem of direct discharge of wastewater and pollution of the environment.

[0049] Furthermore, such as Figure 4 and Figure 5 As shown, the scraper hopper 24 is inclined, with the upward-inclined end of the scraper hopper 24 in contact with the outer circumferential surface of the conveyor roller 19, and the downward-inclined end of the scraper hopper 24 is provided with a receiving box 25. By adopting the above technical solution, the outer circumferential surface of the conveyor roller 19 is scraped clean, and the scraped powder cake is collected.

[0050] Furthermore, such as Figure 1 and Figure 3As shown, the water outlet is connected to a water storage tank 28, and the water storage tank 28 is connected to a return water pipe 27. The treated wastewater is discharged from the water outlet to the water storage tank 28 through the drain pipe 26. Then, when needed, the wastewater in the water storage tank 28 is sent back to the mandrel grinding equipment through the return water pipe 27 for reuse using a water pump or other conveying equipment, thus saving water resources.

[0051] In another aspect of this disclosure, a spindle grinding machine for graded recycling of residual materials from relay components is proposed, such as... Figure 1-3 As shown, it includes the main body of the equipment 11, the vibratory feeder 1, and the aforementioned sewage treatment device.

[0052] The main body 11 of the equipment is connected to the water inlet so that the wastewater generated during grinding collected by the main body 11 can enter the treatment tank 18, for example... Figure 3 The main body 11 of the device shown is connected to the water inlet via the water outlet pipe 17.

[0053] In this embodiment, as Figure 1 and Figure 3 As shown, the main body 11 of the equipment has a pair of grinding rollers 12 and a cooling water component 32 located above the connection of the pair of grinding rollers 12. The cooling water component 32 is configured to spray cooling water onto the connection of the pair of grinding rollers 12, thereby water cooling the shaft blank 6 and the grinding rollers 12 during the grinding process.

[0054] In this embodiment, as Figures 1-3 As shown, one side of a pair of grinding rollers 12 is provided with: a push-pull device 4, a carrier plate 7, a pusher device 8, a push-pull device 5, a conveying device 14, and a pusher device 13.

[0055] Specifically, such as Figure 1 As shown, the push-pull device 4 is connected to a slide 3. The upper surface of the slide 3 is constructed with a straight slide groove 31. The straight slide groove 31 is used to accommodate the mandrel blank 6. Under the drive of the push-pull device 4, the straight slide groove 31 is close to or away from the connection of a pair of grinding rollers 12. When the straight slide groove 31 is close to the connection of a pair of grinding rollers 12, it is convenient for the push-pull device 5 to push the mandrel blank 6 to the grinding position at the connection of a pair of grinding rollers 12. When the straight slide groove 31 is away from the connection of a pair of grinding rollers 12, it is convenient for the pusher device 13 to push the mandrel away from the grinding position and fall onto the conveying device 14.

[0056] To facilitate the installation of the push-pull device 4 and the slide 3, and to promote the smooth sliding of the slide 3, such as Figure 1 As shown, the push-pull device 4 and the slide 3 are installed on the frame 2. The slide 3 is slidably connected to the frame 2. The vibratory feeder 1 is located next to the frame 2. The pusher device 8 and the carrier plate 7 are also installed on the frame 2.

[0057] Specifically, such as Figure 1As shown, the bearing plate 7 is located next to the slide 3, and a pusher block 9 is provided on its upper surface. The vibratory feeder 1 is configured to place the bearing blank 6 in the area between the pusher block 9 on the upper surface of the bearing plate 7 and the slide 3. The bearing plate 7 is configured such that one end near the slide 3 is in contact with the slide 3, and the upper surface of the bearing plate 7 near the slide 3 is flush with the upper surface of the slide 3, so that the pusher block 9 can push the bearing blank 6 smoothly from the bearing plate 7 to the slide 3.

[0058] like Figure 2 As shown, the discharge end of the vibratory feeder 1 has a discharge channel 10, and the shaft blank 6 moves on the discharge channel 10 to the area between the push block 9 and the slide 3 on the upper surface of the shaft plate 7.

[0059] To ensure that the pusher block 9 smoothly and steadily moves the shaft blank 6 from the bearing plate 7 to the carriage 3, such as... Figure 2 As shown, the lower surface of the pusher 9 is provided with a material trough 91 for accommodating the shaft blank 6 on the side near the slide 3. The vibratory feeder 1 directly feeds the shaft blank 6 into the material trough 91. When the pusher 9 moves, the shaft blank 6 is limited by the material trough 91 and is not easy to move around, so that the shaft blank 6 is smoothly pushed by the pusher 9 into the straight slide groove 31 of the slide 3.

[0060] Specifically, such as Figure 1 As shown, the pushing device 8 is connected to the pushing block 9 and is used to drive the pushing block 9 to move the shaft blank 6 from the shaft carrier plate 7 to the straight slide groove 31 of the slide 3.

[0061] Specifically, such as Figure 1 As shown, the push-pull device 2 5 is connected to the slide 3. The push-pull device 2 5 is configured to push the shaft blank 6 in the straight slide 31 to the grinding position at the connection of the pair of grinding rollers 12 when the straight slide 31 is close to the connection of the pair of grinding rollers 12.

[0062] like Figure 1 As shown, the feeding device 14 is located below the slide 3. The feeding device 14 is constructed such that one end is close to the connection of a pair of grinding rollers 12 to receive the mandrel falling from the grinding position. The other end of the feeding device 14 is provided with a dropping hopper 15. A receiving box 16 is provided below the dropping hopper 15. The dropping hopper 15 is inclined, with its inclined upward end close to the feeding device 14 to receive the mandrel falling from the feeding device 14. The inclined downward end of the dropping hopper 15 is located in the receiving box 16. The finished mandrel after grinding is collected and stored through the receiving box 16.

[0063] In practice, the material conveying device 14 can be a belt conveyor, plate conveyor, chain conveyor, etc.

[0064] like Figure 3As shown, the second pushing device 13 is located on the other side of a pair of grinding rollers 12, and is used to push the mandrel away from the grinding position and fall onto the conveying device 14.

[0065] The mandrel grinding equipment in this embodiment uses a wastewater treatment device to treat the wastewater generated during the mandrel grinding process, recover metal materials such as iron powder, and send the treated wastewater back to the grinding equipment for reuse, thus saving water resources and avoiding the problem of direct discharge of wastewater and environmental pollution.

[0066] It should be noted that, in specific implementation, the push-pull device 1 4, push-pull device 2 5, push-material device 1 8, and push-material device 2 13 in this embodiment can be linear actuators such as cylinders, hydraulic cylinders, or linear motors.

[0067] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar words used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar words mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0068] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A spindle grinding machine for graded recycling of residual materials from relay parts, characterized in that, include: The treatment tank has an inlet and an outlet. The conveyor roller is rotatably installed inside the treatment box and defines a pre-treatment zone and a post-treatment zone separated by the conveyor roller inside the treatment box. The water inlet end is connected to the pre-treatment zone and the water outlet end is connected to the post-treatment zone. The conveyor roller is constructed to block the sewage in the pre-treatment zone as it flows to the post-treatment zone, so as to slow down the flow speed of the sewage. A suction roller is positioned above the conveyor roller and is tactilely connected to it. The outer circumferential surface of the suction roller is magnetic. Under the push of the conveyor roller, the suction roller can move away from the conveyor roller while maintaining tactile connection with it. Rotating components are connected to the conveyor belt roller drive; A sludge scraper is located in the post-processing area. One end of the sludge scraper contacts the outer circumferential surface of the conveyor roller to clean the outer circumferential surface of the conveyor roller.

2. The waste material grading and recycling mandrel grinding machine according to claim 1, characterized in that: The processing box is equipped with a guide column, and the suction roller is slidably connected to the guide column. The suction roller slides along the guide column under the push of the conveyor roller.

3. The waste material grading and recycling mandrel grinding machine according to claim 2, characterized in that: A spring is provided on the guide post, and one end of the spring is connected to the suction roller. The spring is configured to keep the suction roller and the conveyor roller pressed together.

4. The waste material grading and recycling mandrel grinding machine according to claim 1, characterized in that: The inlet end is connected to the outlet pipe, and the outlet end is connected to the drain pipe.

5. The waste material grading and recycling mandrel grinding machine according to claim 1, characterized in that: The sludge scraper is inclined, with the upward-inclined end of the sludge scraper contacting the outer circumferential surface of the material roller, and the downward-inclined end of the sludge scraper is provided with a receiving box.

6. The waste material grading and recycling mandrel grinding machine according to claim 1, characterized in that: The water outlet is connected to a water storage tank, and the water storage tank is connected to a return water pipe.

7. The waste material grading and recycling mandrel grinding machine according to claim 1, characterized in that: It also includes the main body of the equipment and the vibratory feeder; The main body of the equipment is connected to the water inlet. The main body of the equipment has a pair of grinding rollers and a cooling water component located above the connection between the pair of grinding rollers. The cooling water component is configured to spray cooling water onto the connection between the pair of grinding rollers. One side of the pair of grinding rollers is provided with: Push-pull device one, which is connected to a slide, the upper surface of which is constructed with a straight slide groove, the straight slide groove being driven by push-pull device one to move closer to or further away from the connection of a pair of grinding rollers; A bearing plate is located next to the slide, and a pusher block is provided on its upper surface. The vibratory feeder is configured to place the bearing blank in the area between the upper surface of the bearing plate and the slide by pushing the pusher block. The bearing plate is configured such that one end of the bearing plate is in contact with the slide, and the upper surface of the bearing plate near the slide is flush with the upper surface of the slide, so that the pusher block can push the bearing blank smoothly from the bearing plate to the slide. The first feeding device is connected to the pusher block and is used to drive the pusher block to move the shaft blank into the straight slide groove; Push-pull device two is connected to the slide. The push-pull device two is configured to push the shaft blank in the straight slide to the grinding position at the connection of the pair of grinding rollers when the straight slide is close to the connection of the pair of grinding rollers. A feeding device is located below the carriage. The feeding device is configured such that one end is close to the connection of a pair of grinding rollers to receive the mandrel falling from the grinding position. The second pushing device is located on the other side of a pair of grinding rollers and is used to push the mandrel away from the grinding position and fall onto the conveying device.

8. The waste material grading and recycling mandrel grinding machine according to claim 7, characterized in that: The water outlet is connected to the cooling water component.

9. The waste material grading and recycling mandrel grinding machine according to claim 7, characterized in that: The lower surface of the pusher block is provided with a material receiving groove for accommodating the shaft blank on the side near the slide.

10. The waste material grading and recycling mandrel grinding machine according to claim 7, characterized in that: The other end of the conveying device is provided with a dropping hopper and a receiving box. The dropping hopper is located above the receiving box and is inclined. Its inclined upward end is close to the conveying device to receive the mandrel that falls from the conveying device, and the inclined downward end of the dropping hopper is located inside the receiving box.

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