A cold heading oil recycling device for a cold heading forming machine

Abstract

This application provides a cold heading oil recycling device for a cold heading forming machine, relating to the field of cold heading machine technology. The cold heading oil recycling device for a cold heading forming machine includes an oil inlet mechanism, an aeration mechanism, a centrifugal filtration mechanism, and an oil storage mechanism connected in sequence. The centrifugal filtration mechanism includes a centrifuge frame and a centrifuge cylinder supported by it. Several magnetic strips are provided on the side wall of the centrifuge cylinder. A support is suspended above the centrifuge cylinder, and a scraper corresponding to the magnetic strips is provided on the support. A spiral guide assembly is provided at the bottom of the support, with the starting end of its equal-radius spiral band located directly below the scraping point of the scraper. This application achieves efficient and continuous separation and automatic cleaning of tiny metal impurities in the cold heading oil by using magnetic strips to adsorb metal impurities, scraping off the adsorbed layer in real time with the scraper, and guiding the scraped impurities to a slag collection assembly via the spiral guide assembly. This significantly improves the quality of oil recycling and the stability of equipment operation.

Description

Technical Field

[0001] This application relates to the field of cold heading machine technology, and in particular to a cold heading oil recycling device for a cold heading forming machine. Background Technology

[0002] Cold heading machines are processing equipment that uses high-speed impact to plastically deform metal materials at room temperature. They are widely used in the mass production of fasteners and irregularly shaped parts. During the cold heading process, cold heading oil needs to be continuously sprayed onto the contact area between the mold and the blank to lubricate, cool, and prevent rust, ensuring processing accuracy and mold life. With increasing environmental protection requirements and awareness of production cost control, the recycling and purification of cold heading oil discharged from cold heading machines has become an important technological direction in the field of cold heading.

[0003] In related technologies, a typical cold heading oil recovery device mainly includes a filter box and a magnetic adsorption roller. The filter box is equipped with multiple layers of filter screens to intercept large metal particles in the cold heading oil; the magnetic adsorption roller is installed inside the filter box and uses permanent magnets to adsorb ferromagnetic impurities in the oil. During operation, the cold heading oil containing impurities discharged from the cold heading forming machine first flows through the filter screens to remove large particles, then flows through the magnetic adsorption rollers to adsorb ferromagnetic particles. The cold heading oil, after preliminary purification, is collected in an oil storage tank for recycling.

[0004] However, existing cold heading oil recovery devices still have the following shortcomings: Since the metal impurities generated during cold heading include a large number of micron-sized fine particles, these tiny impurities are difficult to effectively intercept by conventional filters and are also easily missed by magnetic adsorption rollers due to the high viscosity and high flow rate of the oil. After long-term circulation, these tiny impurities accumulate in the oil, not only causing a decline in the cooling and lubrication performance of the cold heading oil, but also easily adhering to the inner wall of the circulation pipe to form a scale layer, increasing the risk of pipe blockage and affecting the continuous and stable operation of the cold heading forming machine. Summary of the Invention

[0005] This application provides a cold heading oil recycling device for a cold heading forming machine, which solves the problem that conventional filters are unable to effectively intercept tiny impurities, eventually leading to the accumulation of impurities and the formation of scale.

[0006] The technical solution adopted in the embodiments of this application is as follows: In a first aspect, embodiments of this application provide a cold heading oil recycling device for a cold heading forming machine, comprising an oil inlet mechanism for preliminary cleaning of the cold heading oil, an aeration mechanism located downstream of the oil inlet mechanism, a centrifugal filtration mechanism for secondary treatment of the cold heading oil, and an oil storage mechanism for recovering the cold heading oil. The oil inlet mechanism is connected to the oil outlet of the cold heading forming machine. The centrifugal filtration mechanism is located downstream of the oil inlet mechanism, and the oil storage mechanism is connected to the oil outlet of the centrifugal filtration mechanism. The centrifugal filtration mechanism includes a centrifugal frame, a first drive is fixedly connected to the bottom of the centrifugal frame, and a centrifugal cylinder is fixedly connected to the output shaft of the first drive. The centrifugal cylinder includes a bottom plate and a side plate, and a plurality of magnets are detachably connected to the side plate. The centrifuge drum is equipped with magnetic suction strips evenly distributed circumferentially along the side plate. A support is suspended above the centrifuge drum, extending into the interior of the drum. Several scrapers are mounted on the support, with the height of the scrapers corresponding to the height of the magnetic suction strips. Several spiral guide assemblies are detachably connected to the bottom of the support. Each spiral guide assembly includes a sleeve detachably connected to the support, spiral blades fixedly connected to the sleeve, and a spiral band of equal radius fixedly connected to the spiral blades. The starting end of the spiral band of equal radius is located directly below the scraping point of the scrapers. A gap is maintained between the spiral blades and the side plate. A slag collection assembly is detachably connected to the bottom of the centrifuge drum. The spiral guide assembly is used to guide the scraped impurities to the slag collection assembly.

[0007] By adopting the above technical solution, the magnetic strip is placed on the side wall of the high-speed rotating centrifuge drum, which forces the cold heading oil to form convection under centrifugal force. This significantly increases the contact probability between the oil and the magnetic strip, reducing the problem of poor oil flow in traditional static magnetic suction devices where tiny metal impurities are difficult to capture. Simultaneously, a scraper fixed to the support continuously scrapes the surface of the rotating magnetic strip, peeling away the adsorbed impurity layer and restoring the magnetic strip's adsorption capacity. This reduces the decrease in adsorption efficiency caused by magnetic shielding due to impurity accumulation. The starting end of the equal-radius spiral band of the spiral guide assembly is precisely located below the scraping point of the scraper. After impurities are scraped away from the magnetic strip, they rotate tightly against the drum wall under centrifugal force and are then captured by the inlet of the equal-radius spiral band. The impurities are then guided downwards along the fixed spiral blades, improving the operational stability of the device and achieving the effect of improving the removal accuracy of tiny metal impurities and ensuring the cleanliness of the circulating oil.

[0008] In one alternative implementation, the bottom of the bracket is further provided with an annular receiving groove, which is located between the magnetic strip and the spiral blades. A gap is maintained between the annular receiving groove and the side plate. The annular receiving groove has guide ports that match the number of spiral blades, and the guide ports are respectively aligned with the inlets of the spiral blades.

[0009] By adopting the above technical solution, after the scraper removes impurities from the magnetic strip, the impurities are thrown towards and adhere tightly to the cylinder wall under centrifugal force. Because a small gap remains between the annular receiving groove and the side plate, and its position is precisely on the path of the impurities' fall, the impurities first fall into the annular receiving groove. The impurities falling into the groove rotate with centrifugal force. When they pass through the guide port aligned with the inlet of the spiral blades, under the combined action of centrifugal force and the guide port structure, they are guided into the spiral guide assembly below. The annular receiving groove first gathers the discrete impurities, and then precisely distributes them to each spiral blade through the guide port. This improves the efficiency of impurity transfer from the scraping point to the conveying point, and reduces the idling of impurities on the cylinder wall or their re-mixing into the oil.

[0010] In one alternative implementation, the slag collection assembly includes a conical slag collection hopper integrally formed with the bottom of the centrifuge cylinder. The bottom of the conical slag collection hopper is provided with an opening. A baffle is detachably connected to the bottom opening of the conical slag collection hopper. A sealing ring is provided at the connection between the baffle and the conical slag collection hopper. An annular chip collection box is provided below the conical slag collection hopper.

[0011] By adopting the above technical solution, the conical design allows impurities to naturally concentrate at the bottom opening under the action of gravity and centrifugal force, reducing the dead zones for impurity accumulation in the flat-bottom structure. The detachable baffle, in conjunction with the sealing ring, forms a reliable seal during normal operation, preventing oil leakage from the bottom opening. When cleaning impurities is required, the baffle can be easily removed, allowing the accumulated impurities to fall into the annular chip collection box below. The annular chip collection box, arranged around the bottom of the centrifuge cylinder, provides a large collection volume and allows operators to clean and maintain it from any angle, effectively reducing maintenance difficulty and the risk of oil leakage.

[0012] In one optional implementation, the oil inlet mechanism includes an oil inlet hopper and a magnetic roller. A third drive is provided on the side wall of the oil inlet hopper. The output shaft of the third drive is fixedly connected to the magnetic roller. There are multiple magnetic rollers and a third drive, and the surfaces of adjacent magnetic rollers are in contact with each other.

[0013] By adopting the above technical solution, the third drive rotates the magnetic roller. When cold heading oil containing a large amount of metal impurities flows through the oil inlet hopper, it first contacts the surface of the magnetic roller, and the large metal particles are adsorbed. The surfaces of adjacent magnetic rollers contact each other and rotate relative to each other, forming a dynamic extrusion and shearing zone, which can crush or agglomerate the impurities adsorbed on the roller surface, facilitating subsequent processing and achieving the effects of improving pretreatment efficiency and adaptability to complex impurities.

[0014] In one alternative implementation, the oil inlet hopper is further fixed to a scraper matching the number of magnetic rollers. The scraper is L-shaped and includes a vertical section for scraping off impurities and a horizontal section for transferring impurities. The end of the horizontal section is connected to an auger, and the end of the auger away from the oil inlet hopper is connected to an oil storage mechanism.

[0015] By adopting the above technical solution, the vertical section closely adheres to the surface of the magnetic roller, scraping away impurities. The scraped-off impurities fall directly onto the horizontal section and, under the pressure of gravity and subsequent impurities, move towards the end of the horizontal section, eventually entering the auger. As a closed conveying mechanism, the auger can continuously and smoothly transport the collected impurities to the oil storage mechanism for further processing, reducing the accumulation of impurities in the oil inlet hopper or their re-mixing into the oil, thus achieving the effect of scraping away impurities from the surface of the magnetic roller and removing them.

[0016] In one alternative implementation, an air nozzle is provided at the end of the horizontal section away from the auger, the air nozzle being used to guide impurities to be transferred to the auger, a sealing ring is provided at the connection between the auger and the horizontal section, and a sealing ring is also provided at the connection between the auger and the oil storage mechanism.

[0017] By adopting the above technical solution, an air nozzle is installed at the starting end of the horizontal section of the L-shaped scraper. High-pressure airflow is used to assist in blowing away the scraped impurities, effectively reducing the accumulation or jamming of impurities, especially sticky or damp ones, on the horizontal section. This ensures that impurities can smoothly and quickly enter the auger, improving the reliability of the transfer. Simultaneously, sealing rings are installed at the connections between the auger and the horizontal section, and between the auger and the oil storage mechanism, effectively reducing the leakage of oil and impurities into the external environment during transportation. This avoids secondary pollution and equipment contamination, achieving the effects of improving impurity transportation efficiency and reducing accumulation.

[0018] In one optional implementation, the oil storage mechanism includes an oil draining tank and an oil collecting tank. A display panel is provided outside the oil collecting tank. The oil draining tank and the oil collecting tank are detachably connected. A multi-stage filter screen is provided at the connection between the oil draining tank and the oil collecting tank. Several through holes are opened at the bottom of the oil draining tank. The diameter of the through holes is smaller than the diameter of the filter cake. The oil draining tank is used to collect residual oil in the filter cake. A liquid level sensor is detachably connected inside the oil collecting tank. The liquid level sensor is electrically connected to the display panel.

[0019] By adopting the above technical solution, the discharged impurities are typically in the form of a filter cake, still containing some oil. This filter cake is collected in an oil draining tank, where the diameter of the through-holes at the bottom is smaller than the diameter of the solid particles in the filter cake. Therefore, the oil in the filter cake seeps through the through-holes to the oil collection tank below under gravity, while the solid impurities are trapped in the oil draining tank, achieving further separation of oil and impurities. A multi-stage filter screen installed in the oil collection tank further filters the seeping oil, ensuring that the oil entering the tank is highly clean. A level sensor monitors the oil level in the collection tank in real time and displays it intuitively on a display panel, allowing operators to easily monitor the oil volume and arrange for timely oil reuse, maximizing the recovery of oil resources and improving the recycling rate.

[0020] In one alternative implementation, the aeration mechanism includes a mixing cylinder, an air delivery pipe, and an aeration head communicating with the air delivery pipe. The mixing cylinder is located between the oil inlet mechanism and the centrifugal filtration mechanism, and the aeration head extends into the mixing cylinder to continuously deliver air into the interior of the mixing cylinder.

[0021] By adopting the above technical solution, before entering the high-speed rotating centrifuge drum, the cold heading oil first comes into contact with continuously injected air in the mixing drum. The air is dispersed in the oil in the form of bubbles. The agitation of the bubbles helps some volatile substances in the oil to escape and dissipate heat, thus playing a pre-cooling role. After the gas-liquid mixture enters the centrifuge drum, the interaction between the bubbles, oil, and impurities is more intense in the centrifugal force field. Some tiny impurities may adhere to the surface of the bubbles and float to the surface or change their trajectory, thus assisting the subsequent centrifugal separation process. Furthermore, by moving the aeration process from inside the centrifuge drum to the mixing drum outside the drum, the interference that direct and intense aeration inside the centrifuge drum might cause to the stable flow field is avoided, thus ensuring the efficiency of centrifugal separation.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. A fully automated circulating purification system for cold heading oil is constructed through multi-stage coordination of the oil inlet mechanism, centrifugal filtration mechanism, aeration mechanism, and oil storage mechanism. Magnetic roller groups and magnetic strips perform multi-stage magnetic separation of metallic impurities. Combined with forced convection under centrifugal force field and aeration assistance, the separation accuracy of minute impurities is significantly improved, ensuring high cleanliness of the circulating oil and effectively extending the service life of the cold heading oil. 2. The centrifugal filtration mechanism employs a structure that combines a rotating cylinder wall with a fixed magnetic strip, a fixed scraper, and a spiral flow guide assembly. Utilizing the centrifugal cylinder's own rotation as power, it achieves continuous operation of impurity adsorption, scraping, and flow guidance. The precise connection between the annular receiving trough and the equal-radius spiral belt completely solves the problem of disordered drift of scraped impurities in the centrifugal force field, ensuring the reliability and continuity of impurity transport. 3. By combining the oil storage mechanism with liquid level monitoring and oil recovery design, intelligent operation of the equipment and maximum resource recovery are achieved. The mixing cylinder design at the front of the aeration mechanism enhances heat dissipation and flotation assistance while avoiding interference with the centrifugal flow field, significantly improving the system's operational stability and ease of maintenance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a cold heading oil recycling device for a cold heading forming machine.

[0024] Figure 2 This is a schematic diagram of the magnetic roller and scraper.

[0025] Figure 3 This is a schematic diagram of the aeration mechanism.

[0026] Figure 4 This is a schematic diagram of a centrifugal filtration mechanism.

[0027] Figure 5 This is a schematic diagram of the internal structure of a centrifuge cylinder.

[0028] Figure 6 This is a schematic diagram of the oil storage mechanism.

[0029] Explanation of reference numerals in the attached drawings: 1. Oil inlet mechanism; 2. Aeration mechanism; 3. Centrifugal filtration mechanism; 4. Oil storage mechanism; 5. Magnetic roller; 6. Scraper; 7. Air nozzle; 8. Mixing cylinder; 9. Air delivery pipe; 10. Aeration head; 11. Centrifuge frame; 12. Centrifuge cylinder; 13. Magnetic strip; 14. Support; 15. Scraper; 16. Sleeve; 17. Spiral blade; 18. Uniform radius spiral band; 19. Annular receiving trough; 20. Guide port; 21. Conical slag collection hopper; 22. Annular chip collection box; 23. Oil draining box; 24. Oil collection box. Detailed Implementation

[0030] The present application will be further described in detail below with reference to all the accompanying drawings in the embodiments of the present application.

[0031] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after the connection. It should be understood that when component A is fixedly connected to component C via component B, changes in the relative positional relationship due to deformation of components A, B, and C are permissible. The integrated structure obtained by the two components through a one-piece molding process means that during the formation of one of the two components, that component is connected to the other component, without requiring further processing (such as bonding, welding, snap-fit ​​connections, or screw connections) to connect the two components.

[0032] The directional terms mentioned in the embodiments of this application, such as "upper", "lower", "side", etc., are only for reference to the direction of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0033] The term "multiple" refers to at least two. The term "more than" includes the stated number. The term "and / or" describes a relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0034] This application discloses a cold heading oil recycling device for a cold heading forming machine.

[0035] Reference Figure 1 A cold heading oil recycling device for a cold heading forming machine includes an oil inlet mechanism 1 for preliminary cleaning of cold heading oil containing impurities discharged from the cold heading forming machine, a centrifugal filter mechanism 3 located downstream of the oil inlet mechanism 1 for secondary treatment of the pre-cleaned cold heading oil, an aeration mechanism 2 located downstream of the oil inlet mechanism 1 for aeration treatment of the oil, and an oil storage mechanism 4 for recovering and storing the finally cleaned cold heading oil.

[0036] The oil inlet mechanism 1 is directly connected to the oil outlet of the cold heading machine via a pipe to collect the waste oil to be treated. The centrifugal filtration mechanism 3 is located downstream of the oil inlet mechanism 1. The inlet of the oil storage mechanism 4 is connected to the oil outlet of the centrifugal filtration mechanism 3 to collect the finally purified cold heading oil for recycling.

[0037] Reference Figure 1 and Figure 2 The main body of the oil inlet mechanism 1 is an oil inlet hopper, which is used to receive and temporarily store the cold heading oil discharged from the cold heading forming machine. Three third drives are fixedly installed on the side wall of the oil inlet hopper. The output shaft of each third drive extends into the inside of the oil inlet hopper and is fixedly connected to a magnetic roller 5. The third drive adopts a servo motor.

[0038] Reference Figure 2 These magnetic rollers 5 are arranged side by side, the same number as the third drive, and the outer circumferential surfaces of adjacent magnetic rollers 5 are in contact with each other. During operation, the third drive drives the magnetic rollers 5 to rotate. When cold heading oil containing a large amount of metallic impurities flows through the oil inlet hopper, it first comes into contact with the surface of the rotating magnetic rollers 5, and the metallic impurities are adsorbed. The mutual contact and relative rotation of the surfaces of adjacent magnetic rollers 5 form a dynamic extrusion and shearing zone, which can crush or agglomerate the impurities adsorbed on the roller surface, facilitating subsequent processing.

[0039] Scrapers 6, which are in the same number as the magnetic rollers 5, are fixedly installed on the inner wall of the oil inlet hopper. The scrapers 6 are L-shaped in general.

[0040] The scraper 6 includes a vertical section and a horizontal section, wherein the cutting edge of the vertical section is in close contact with the surface of the magnetic roller 5, and is used to scrape off the impurities adsorbed on the rotating magnetic roller 5. The scraped-off impurities fall directly onto the L-shaped scraper 6.

[0041] Reference Figure 1 The horizontal section extends from the root of the vertical section outwards towards the outside of the oil inlet hopper, and its end connects to the inlet of an auger. The auger, as a closed conveying mechanism, has its end furthest from the oil inlet hopper connected to the oil storage mechanism 4, which is used to continuously and smoothly transport the collected impurities to the oil storage mechanism 4 for further processing.

[0042] Reference Figure 2 At the end of the horizontal section furthest from the auger, near the center of the oil inlet hopper, there is an air nozzle 7. This air nozzle 7 is connected to an external compressed air source through a pipeline. When in operation, it sprays high-pressure airflow to assist in blowing away impurities that fall on the horizontal section, preventing sticky or moist impurities from accumulating or getting stuck on the horizontal section, and ensuring that impurities can smoothly and quickly enter the auger.

[0043] Reference Figure 1Sealing rings are installed at the connection between the auger and the horizontal section, and at the connection between the auger and the oil storage mechanism 4, to prevent oil and impurities from leaking into the external environment during transportation.

[0044] Reference Figure 1 and Figure 3 The oil exiting from the oil inlet mechanism 1 passes through the aeration mechanism 2 before entering the centrifugal filtration mechanism 3. The aeration mechanism 2 includes a mixing cylinder 8, an air delivery pipe 9, and an aeration head 10. The mixing cylinder 8 is located on the connecting pipe between the oil inlet mechanism 1 and the centrifugal filtration mechanism 3.

[0045] Reference Figure 3 One end of the air delivery pipe 9 is connected to an external air source, and the other end is connected to the aeration head 10. The aeration head 10 extends into the interior of the mixing cylinder 8 and can continuously deliver air into the mixing cylinder 8 during operation, so that the air is pre-dispersed in the oil in the form of bubbles, which plays a role in pre-cooling and mixing.

[0046] Reference Figure 1 and Figure 4 The centrifugal filtration mechanism 3 includes a centrifuge cylinder 12, which is fixedly connected to the output shaft of a first drive via its base plate. The entire centrifuge cylinder 12 is rotatably supported on a centrifuge frame 11 by bearings, which provides stable support for the entire mechanism. The first drive is a servo motor.

[0047] Reference Figure 4 The first drive is fixedly connected to the bottom of the centrifuge frame 11, and its output axis extends upward, driving the centrifuge cylinder 12 to rotate at high speed around its own axis. The centrifuge cylinder 12 includes a circular bottom plate and an annular side plate, which together form a working chamber for containing oil.

[0048] Three magnetic strips 13 are installed on the inner wall of the side plate of the centrifuge cylinder 12 by screws. These magnetic strips 13 are evenly distributed around the circumference of the side plate and are used to adsorb metal impurities in the oil under centrifugal force. Above the centrifuge cylinder 12, a bracket 14 is suspended. The upper end of the bracket 14 is fixed to the external stationary structure, and the lower end extends downward into the interior of the centrifuge cylinder 12.

[0049] Reference Figure 4 and Figure 5 Three scrapers 15 are fixedly installed on the bracket 14. The working ends of the scrapers 15 are coated with polytetrafluoroethylene. The number and height of these scrapers 15 correspond to the magnetic strip 13, ensuring that the cutting edge of each scraper 15 can contact the surface of the rotating magnetic strip 13 to scrape off the impurities adsorbed on it.

[0050] Reference Figure 4 At the bottom of the bracket 14, three spiral flow guide assemblies are bolted together.

[0051] Reference Figure 4 and Figure 5 Each spiral guide assembly includes a sleeve 16, a spiral blade 17, and a spiral band of equal radius 18. The upper end of the sleeve 16 is detachably connected to the bottom of the bracket 14, serving as the mounting base for the entire assembly.

[0052] Reference Figure 5 The spiral blade 17 is fixedly connected to the lower end of the sleeve 16 and extends downward in a spiral shape. The equal-radius spiral band 18 is fixedly connected to the lower edge of the spiral blade 17, and its outer radius is basically the same as the inner wall radius of the side plate of the centrifuge cylinder 12. Only a small gap is left between the two to prevent motion interference.

[0053] The starting end of the spiral band 18 of equal radius is precisely located directly below the scraping point of the corresponding scraper 15 in the circumferential direction to ensure that the scraped-off impurities can be effectively captured.

[0054] Reference Figure 4 and Figure 5 An annular receiving groove 19 is also provided at the bottom of the support 14. The annular receiving groove 19 is located between the lower part of the magnetic strip 13 and the upper part of the spiral blade 17. It is annular in shape, surrounds the inner wall of the centrifuge cylinder 12, and also maintains a small gap with the side plate.

[0055] Reference Figure 5 The annular receiving groove 19 is provided with guide ports 20 that match the number of spiral blades 17. These guide ports 20 are respectively aligned with the inlets of the corresponding spiral blades 17 below in the circumferential direction.

[0056] Reference Figure 4 and Figure 5 When the scraper 15 scrapes the impurities off the magnetic strip 13, the impurities are thrown towards and stick to the cylinder wall under the action of centrifugal force. Since the position of the annular receiving groove 19 is exactly on the falling path of the impurities, the impurities will fall into the annular receiving groove 19 first.

[0057] Impurities falling into the tank rotate together with the centrifuge cylinder 12. When they pass through the guide port 20, which is aligned with the inlet of the spiral blade 17, they are precisely guided into the inlet of the equal-radius spiral band 18 below under the combined action of centrifugal force and the structure of the guide port 20.

[0058] Impurities introduced into the equal-radius spiral band 18 then enter the spiral conveying channel formed by the fixed spiral blades 17 and the side wall of the rotating centrifuge cylinder 12. As the centrifuge cylinder 12 continues to rotate, the impurities are forced to flow downwards along the spiral blades 17 and finally fall into the slag collection assembly at the bottom of the centrifuge cylinder 12.

[0059] The slag collection assembly includes a conical slag collection hopper 21 integrally formed with the bottom of the centrifuge cylinder 12. The bottom of the conical slag collection hopper 21 has an opening for discharging impurities.

[0060] Reference Figure 5 At the opening, a baffle is bolted on, and a sealing ring is provided at the connection between the baffle and the conical slag hopper 21 to ensure a reliable seal during normal operation and prevent oil leakage.

[0061] Below the conical slag hopper 21, there is an annular chip collection box 22 to collect impurities discharged from the bottom opening of the conical slag hopper 21. When it is necessary to clean the impurities, the operator can easily remove the baffle to allow the impurities accumulated in the conical slag hopper 21 to fall into the annular chip collection box 22 below for centralized treatment.

[0062] Reference Figure 1 and Figure 4 The cold heading oil, purified by the centrifugal filtration mechanism 3, flows out through the oil outlet hole on the side wall of the centrifugal cylinder 12 and finally enters the oil storage mechanism 4.

[0063] Reference Figure 1 and Figure 6 The oil storage mechanism 4 includes an oil draining tank 23 and an oil collecting tank 24. The oil draining tank 23 and the oil collecting tank 24 are connected by snap-fit, and a multi-stage filter screen is provided at the connection point. The filter cake discharged from the centrifugal filtration mechanism 3 is first collected in the oil draining tank 23. The bottom of the oil draining tank 23 has multiple through holes, the diameter of which is designed to be smaller than the diameter of the solid particles in the filter cake.

[0064] Reference Figure 6 The oil remaining in the filter cake will seep through the through holes into the oil collection tank 24 below under the action of gravity, while solid impurities will be trapped in the oil draining tank 23.

[0065] A liquid level sensor is detachably installed inside the oil collection tank 24 to monitor the oil level in the tank in real time. The liquid level sensor is electrically connected to a display panel located outside the oil collection tank 24, which displays the oil level information intuitively to the operator, making it easy for them to grasp the oil quantity and arrange oil reuse in a timely manner.

[0066] The implementation principle of the cold heading oil recycling device for a cold heading forming machine according to this application embodiment is as follows: The waste oil discharged from the cold heading forming machine first enters the oil inlet hopper, where large metal impurities are adsorbed by the rotating magnetic roller 5. After being scraped off by the L-shaped scraper 6, the adsorbed impurities are blown into the auger by the air nozzle 7 and transported to the oil storage mechanism 4. The pre-cleaned oil enters the mixing cylinder 8 and is pre-mixed with the air injected by the aeration head 10 to achieve pre-cooling. Subsequently, the oil enters the high-speed rotating centrifuge cylinder 12. Under the action of centrifugal force, small metal impurities are forced to settle and adsorbed onto the magnetic strip 13. The scraper 15 fixed on the bracket 14 scrapes off the impurities on the surface of the magnetic strip 13 in real time. The scraped impurities fall into the annular receiving trough 19 and are then accurately guided into the equal-radius spiral belt 18 through the guide port 20. They are then guided downward along the spiral blades 17 to the conical slag collection hopper 21 for temporary storage. When the baffle is removed, the impurities fall into the annular chip collection box 22 for centralized treatment. The purified cold heading oil flows into the drain tank 23 through the oil outlet, while the residual oil seeps into the collection tank 24 through the through-hole. After being filtered again by a multi-stage filter, it is stored for later use. The liquid level sensor monitors the oil level in real time and displays it on the display panel, realizing the deep purification and recycling of the cold heading oil.

[0067] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0068] It should be noted that all the above-mentioned figures are exemplary illustrations of this application and do not represent the actual size of the product. Furthermore, the dimensional proportions between the components in the figures are not intended to limit the actual product of this application. 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 cold heading oil recycling device for a cold heading forming machine, comprising an oil inlet mechanism (1) for preliminary cleaning of the cold heading oil, an aeration mechanism (2) located downstream of the oil inlet mechanism (1), a centrifugal filtration mechanism (3) for secondary treatment of the cold heading oil, and an oil storage mechanism (4) for recovering the cold heading oil, wherein the oil inlet mechanism (1) is connected to the oil outlet of the cold heading forming machine, the centrifugal filtration mechanism (3) is located downstream of the oil inlet mechanism (1), and the oil storage mechanism (4) is connected to the oil outlet of the centrifugal filtration mechanism (3), characterized in that: The centrifugal filtration mechanism (3) includes a centrifuge frame (11), a first drive is fixedly connected to the bottom of the centrifuge frame (11), and the output shaft of the first drive is fixedly connected to a centrifuge cylinder (12). The centrifuge cylinder (12) includes a bottom plate and a side plate. Several magnetic strips (13) are detachably connected to the side plate. The magnetic strips (13) are evenly distributed along the circumference of the side plate. A bracket (14) is suspended above the centrifuge cylinder (12). The bracket (14) extends into the centrifuge cylinder (12). Several scrapers (15) are provided on the bracket (14). The height of the scrapers (15) is the same as that of the magnetic strips (13). Corresponding to the height, the bottom of the support (14) is detachably connected to several spiral guide components. The spiral guide components include a sleeve (16) detachably connected to the support (14), a spiral blade (17) fixedly connected to the sleeve (16), and an equal radius spiral band (18) fixedly connected to the spiral blade (17). The starting end of the equal radius spiral band (18) is located directly below the scraping point of the scraper (15). A gap is maintained between the spiral blade (17) and the side plate. The bottom of the centrifuge cylinder (12) is detachably connected to a slag collection component. The spiral guide components are used to guide the scraped impurities to the slag collection component.

2. The cold heading oil recycling device for a cold heading forming machine as described in claim 1, characterized in that: The bottom of the bracket (14) is also provided with an annular receiving groove (19), which is located between the magnetic strip (13) and the spiral blade (17). A gap is maintained between the annular receiving groove (19) and the side plate. The annular receiving groove (19) has guide ports (20) that match the number of spiral blades (17). The guide ports (20) are respectively aligned with the inlet of the spiral blades (17).

3. The cold heading oil recycling device for a cold heading forming machine as described in claim 1, characterized in that: The slag collection assembly includes a conical slag collection hopper (21) integrally formed with the bottom of the centrifuge cylinder (12). The bottom of the conical slag collection hopper (21) is provided with an opening. A baffle is detachably connected to the bottom opening of the conical slag collection hopper (21). A sealing ring is provided at the connection between the baffle and the conical slag collection hopper (21). An annular chip collection box (22) is provided below the conical slag collection hopper (21).

4. The cold heading oil recycling device for a cold heading forming machine as described in claim 1, characterized in that: The oil inlet mechanism (1) includes an oil inlet hopper and a magnetic roller (5). A third drive is provided on the side wall of the oil inlet hopper. The output shaft of the third drive is fixedly connected to the magnetic roller (5). There are several magnetic rollers (5) and the third drive. The surfaces of adjacent magnetic rollers (5) are in contact with each other.

5. The cold heading oil recycling device for a cold heading forming machine as described in claim 4, characterized in that: The oil inlet hopper is also fixed to a scraper (6) that matches the number of magnetic rollers (5). The scraper (6) is L-shaped and includes a vertical section for scraping off impurities and a horizontal section for transferring impurities. The end of the horizontal section is connected to an auger, and the end of the auger away from the oil inlet hopper is connected to an oil storage mechanism (4).

6. The cold heading oil recycling device for a cold heading forming machine as described in claim 5, characterized in that: An air nozzle (7) is provided at the end of the horizontal section away from the auger. The air nozzle (7) is used to guide impurities to be transferred to the auger. A sealing ring is provided at the connection between the auger and the horizontal section. A sealing ring is also provided at the connection between the auger and the oil storage mechanism (4).

7. The cold heading oil recycling device for a cold heading forming machine as described in claim 1, characterized in that: The oil storage mechanism (4) includes an oil draining tank (23) and an oil collecting tank (24). A display panel is provided on the outside of the oil collecting tank (24). The oil draining tank (23) and the oil collecting tank (24) are detachably connected. A multi-stage filter screen is provided at the connection between the oil draining tank (23) and the oil collecting tank (24). Several through holes are opened at the bottom of the oil draining tank (23). The diameter of the through holes is smaller than the diameter of the filter cake. The oil draining tank (23) is used to collect the residual oil in the filter cake. A liquid level sensor is detachably connected inside the oil collecting tank (24). The liquid level sensor is electrically connected to the display panel.

8. The cold heading oil recycling device for a cold heading forming machine as described in claim 1, characterized in that: The aeration mechanism (2) includes a mixing cylinder (8), an air delivery pipe (9), and an aeration head (10) connected to the air delivery pipe (9). The mixing cylinder (8) is located between the oil inlet mechanism (1) and the centrifugal filtration mechanism (3). The aeration head (10) extends into the mixing cylinder (8) and can continuously deliver air into the interior of the mixing cylinder (8).

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