A device for processing waste metal parts after casting

Abstract

The utility model relates to metal casting waste treatment equipment technical field, specifically disclose a metal piece casting waste treatment device. The device includes mesa, fixed in mesa's third support plate, support, conveyer belt, magnetic drum and vibration mechanism. Vibration mechanism is driven eccentric shaft rotation by first motor, drives connecting plate movement through second support plate, connecting plate pushes first support plate and makes support rod vertical reciprocating motion, and support rod penetrates third support plate top fixed inclined plate, and inclined plate is located conveyer belt discharge end below. Magnetic drum is installed in support through bearing seat, and is driven rotation by second motor through speed reducer and pulley mechanism. The support sets up the scraper and leans against the drum surface, and the circumferential distribution shower nozzle sprays the drum. The utility model separates the impurity by vibration stripping reinforced metal, and the magnetic separation drum cooperates with the spray and realizes the high temperature protection, and the negative pressure dust removal system controls the pollution from the source, makes the metal recovery rate to improve 15% or above, and the dust concentration of operation environment drops 80%.

Description

Technical Field

[0001] This utility model relates to the field of metal casting waste treatment technology, and in particular to a device for treating waste after metal casting. Background Technology

[0002] Metal casting is an ancient manufacturing process that involves melting metals (such as iron, steel, and aluminum) into a liquid, pouring the liquid into a pre-made mold of a specific shape, and then removing the metal after it cools and solidifies to become the desired part or product. This process is the foundation and core of manufacturing various complex and high-strength metal products, including automotive parts, machinery, aerospace components, and everyday items such as faucets, and is an indispensable part of industrial production.

[0003] Waste generated during metal casting is a common problem in the foundry industry. This waste typically consists of target metal particles, molding sand binders, metal oxides, and dust, forming a dense, aggregated mass under high-temperature casting conditions. Current technologies mainly rely on magnetic separation equipment for separation and recycling, but this approach suffers from three structural drawbacks: Traditional equipment lacks a pretreatment stage. During the cooling process, the oxide layer covering the surface of foundry waste and molding sand can sinter with the metal matrix, forming a physical bond. During direct magnetic separation, magnetic metals and non-magnetic impurities cannot be effectively separated due to adhesion, resulting in the purity of the recovered metal generally being below 75%, and a large amount of high-value metals being discarded along with the impurities.

[0004] High-temperature operation damages core components of the equipment. The temperature of the casting waste that just comes out of the mold often reaches over 400℃. The existing magnetic separator drum lacks an active cooling structure. Continuous high-temperature operation causes the magnets inside the drum to demagnetize, the grease in the transmission bearings to carbonize, and the equipment life is shortened to 30% of the normal operating condition.

[0005] Open-air operations cause environmental pollution. During the transportation, crushing and sorting of waste, a large amount of dust containing heavy metals is generated. Existing equipment mostly adopts end-of-pipe treatment methods such as bag filters, with a dust emission rate as high as 40%. The industry pain point of PM2.5 concentration exceeding the standard in the work area has long existed.

[0006] Therefore, this utility model proposes a waste treatment device for metal casting. Utility Model Content

[0007] In view of the problems of insufficient magnetic separation purity, high temperature damage to equipment and dust pollution caused by the adhesion of metal casting waste in the existing technology, this utility model aims to provide a structurally improved metal casting waste treatment device, which achieves efficient cleaning treatment by integrating vibration peeling, magnetic separation and multi-level protection functions.

[0008] This utility model provides a waste treatment device for metal casting, including a table, a third support plate fixed to the table, a bracket, a conveyor belt, a magnetic roller and a vibration mechanism.

[0009] The vibration mechanism includes a first motor, an eccentric shaft, a second support plate, a connecting plate, a first support plate, a support rod, and an inclined plate.

[0010] The first motor is fixed to one side of the third support plate. One end of the eccentric shaft is connected to the output end of the first motor and rotatably mounted on the third support plate. The second support plate is rotatably mounted on the side of the eccentric shaft away from the first motor. The first end of the connecting plate is rotatably mounted on the bottom of the second support plate, and the second end is rotatably mounted on the side of the third support plate. The first support plate is rotatably mounted in the middle of the connecting plate. The bottom end of the support rod is rotatably mounted on the top of the first support plate, and the top end is fixed with an inclined plate. The support rod extends upward through the top of the third support plate, and the inclined plate is located below the discharge end of the conveyor belt.

[0011] Preferably, the device further includes a magnetic separation drive mechanism, comprising a second motor, a reducer, a small pulley, a large pulley, and a transmission belt. The reducer is fixed to the outside of the bracket, the input shaft is connected to the output shaft of the second motor, the output shaft fixes the small pulley, the large pulley is fixed to one end of the magnetic drum, and the transmission belt meshes with the large and small pulleys.

[0012] Preferably, the bracket is fixed with a scraper, and the scraper blade abuts against the outer peripheral wall of the magnetic roller.

[0013] Preferably, the bracket is fixed with a nozzle, and the nozzle nozzle faces the outer peripheral wall of the magnetic roller.

[0014] Preferably, the device further includes a dust removal and filtration unit, including a suction fan, a gas filtration chamber and a suction pipe. The outlet of the suction fan is connected to the gas filtration chamber, one end of the suction pipe is connected to the inlet of the suction fan, and the other end of the suction pipe is located near the inclined plate material drop area.

[0015] Preferably, the third support plate is fixed with a guide box, which is located at the inclined outlet of the inclined plate, and the bracket has an inlet, with the outlet of the guide box corresponding to the inlet.

[0016] Preferably, the device further includes a waste collection hopper, which is disposed above the feed end of the conveyor belt, and baffles are fixed on both sides of the conveyor belt.

[0017] Preferably, the bottom of the support is provided with a metal material box and an impurity box, with the metal material box located in the material drop area behind the magnetic roller rotation path and the impurity box located in the material drop area in front of the rotation path.

[0018] This utility model has the following beneficial effects: 1. In this utility model, by setting a high-frequency vibrating inclined plate driven by an eccentric shaft and a four-bar linkage, the problem of insufficient magnetic separation purity caused by the adhesion of metal waste and oxides in the prior art is solved, and the technical effect of forcibly stripping oxides from the metal surface and improving the subsequent magnetic separation recovery rate is achieved.

[0019] 2. In this utility model, by adopting an independently driven magnetic drum in conjunction with a directional spraying system, the problem that traditional magnetic separation equipment cannot simultaneously handle the cooling of high-temperature waste, the washing of impurities, and the suppression of dust is solved, and the technical effect of simultaneously achieving drum cooling, deep cleaning of metal surfaces, and improvement of the working environment is achieved during the magnetic separation process. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a waste treatment device for metal casting according to the present invention. Figure 2 This is a schematic diagram of the conveyor belt structure of a metal casting waste treatment device proposed in this utility model; Figure 3 This is a schematic diagram of the eccentric shaft of a metal casting waste treatment device proposed in this utility model. Figure 4 This is a schematic diagram of the structure of a magnetic roller in a metal casting waste treatment device proposed in this utility model. Figure 5 This is a schematic diagram of the transmission belt of a metal casting waste treatment device proposed in this utility model. Figure 6 This is a schematic diagram of the structure of the suction fan in the metal casting waste treatment device proposed in this utility model.

[0021] Legend: 1. Waste collection hopper; 2. Baffle; 3. Conveyor belt; 4. Suction pipe; 5. Inclined plate; 6. Guide box; 7. Nozzle; 8. Magnetic roller; 9. Support; 10. Metal box; 11. Impurity box; 12. First motor; 13. Table; 14. Connecting plate; 15. Gas filter chamber; 16. First support plate; 17. Second support plate; 18. Eccentric shaft; 19. Support rod; 20. Second motor; 21. Scraper; 22. Feed inlet; 23. Fan; 24. Third support plate; 25. Large pulley; 26. Small pulley; 27. Drive belt; 28. Bearing seat; 29. ​​Reducer. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0023] Please refer to Figures 1 to 6 This utility model provides a waste treatment device for metal casting, which aims to solve the problems in the prior art where metal casting waste and impurities are tightly adhered, resulting in low separation purity, low metal recovery rate, and easy dust pollution and high temperature damage to equipment during the treatment process.

[0024] like Figure 1 As shown, the waste disposal device for metal casting includes a waste collection hopper 1 positioned above the feed end of the conveyor belt 3. The lower end of the waste collection hopper 1 is connected to the conveyor belt 3, and baffles 2 are fixed on both sides of the conveyor belt 3. The device also includes a platform 13, on which a third support plate 24 is fixed, with the discharge end of the conveyor belt 3 facing the third support plate 24. The device further includes a bracket 9, on which a magnetic roller 8 is rotatably mounted via two bearing seats 28.

[0025] like Figure 1 and Figure 3 As shown, the device also includes a vibration mechanism, which includes a first motor 12 fixed to one side of the third support plate 24. One end of an eccentric shaft 18 is fixed to the output end of the first motor 12, and the eccentric shaft 18 is rotatably mounted on the third support plate 24. A second support plate 17 is rotatably mounted on the side of the eccentric shaft 18 away from the first motor 12, and the first end of a connecting plate 14 is rotatably mounted on the bottom of the second support plate 17. The second end of the connecting plate 14 is rotatably mounted on the side of the third support plate 24, and a first support plate 16 is rotatably mounted on the middle of the connecting plate 14. The bottom end of a support rod 19 is rotatably mounted on the top of the first support plate 16. The support rod 19 extends upward through the top of the third support plate 24, and an inclined plate 5 is fixed to the top of the support rod 19, located below the discharge end of the conveyor belt 3.

[0026] To solve the aforementioned technical problems, the core of the technical solution in this embodiment lies in the fact that the waste treatment device after metal casting also includes a vibration mechanism, which forms a specific cooperative relationship with the conveyor belt 3 and the third support plate 24. Please refer to [link / reference needed]. Figure 1 and Figure 3 The core structure will be described in detail below: The vibration mechanism includes a first motor 12 fixed to one side of the third support plate 24. The output end of the first motor 12 is fixedly connected to one end of an eccentric shaft 18, which is rotatably mounted on the third support plate 24. A second support plate 17 is rotatably mounted on the side of the eccentric shaft 18 away from the first motor 12. The bottom of the second support plate 17 is rotatably mounted on the first end of a connecting plate 14. The second end of the connecting plate 14 is rotatably mounted on the side of the third support plate 24, and a first support plate 16 is rotatably mounted on the middle of the connecting plate 14. The bottom end of a support rod 19 is rotatably mounted on the top of the first support plate 16. The support rod 19 extends upward through the top of the third support plate 24, and an inclined plate 5 is fixed to the top of the support rod 19. The inclined plate 5 is located below the discharge end of the conveyor belt 3.

[0027] When the first motor 12 drives the eccentric shaft 18 to rotate, the eccentric shaft 18 drives the second support plate 17 to perform eccentric motion. The second support plate 17 drives the first support plate 16 to move through the connecting plate 14. The first support plate 16 drives the support rod 19 to reciprocate in the vertical direction, thereby causing the inclined plate 5 to generate high-frequency vibration. This four-bar linkage structure converts rotational motion into precise linear reciprocating motion, ensuring that the inclined plate 5 obtains stable amplitude and frequency.

[0028] The surface of the inclined plate 5 is provided with wavy raised textures (not shown in the figure), with the peak height of the wavy textures being 3-5 mm and the trough spacing being 15-20 mm. This surface structure increases the contact friction between the waste and the inclined plate 5, enhancing the peeling effect on the metal surface oxides during vibration. The tilt angle of the inclined plate 5 is adjusted to 30°-45°, which ensures that the waste slides down smoothly while extending the residence time of the waste in the vibration zone.

[0029] The discharge end of the conveyor belt 3 and the receiving end of the inclined plate 5 are kept at a vertical distance of 50-80mm. This distance is set to avoid interference between the conveyor belt 3 and the vibrating inclined plate 5, while ensuring that the waste material falls accurately into the vibration area. A through hole with a diameter 2mm larger than that of the support rod 19 is opened at the top of the third support plate 24. This gap design allows the support rod 19 to move freely back and forth, while limiting its lateral displacement.

[0030] Based on the above embodiments, the present invention may further include the following preferred technical solutions: In a preferred embodiment, the magnetic separation drive mechanism includes a reducer 29 fixed to the outside of the bracket 9. The input shaft of the reducer 29 is connected to the output shaft of the second motor 20, and a small pulley 26 is fixed to the end of the output shaft of the reducer 29. A large pulley 25 is fixed to the outside of the magnetic drum 8 near the second motor 20, and the large pulley 25 and the small pulley 26 are connected by a transmission belt 27. The reducer 29 adopts a planetary gear reducer with a transmission ratio of 1:15, reducing the input speed of 1500 rpm from the second motor 20 to 100 rpm. The diameter of the large pulley 25 is designed to be three times the diameter of the small pulley 26, forming a two-stage reduction structure to ensure that the magnetic drum 8 achieves stable low-speed rotation.

[0031] In a preferred embodiment, a mounting base for the scraper 21 is welded and fixed to the bracket 9, and the scraper 21 is fastened to the mounting base with bolts. The cutting edge of the scraper 21 is covered with polyurethane material, and a gap of 0.5 to 1 mm is maintained between the cutting edge of the scraper 21 and the outer peripheral wall of the magnetic roller 8. This gap setting ensures effective scraping off of adsorbed metal while avoiding wear on the roller surface.

[0032] In a preferred embodiment, the bracket 9 has three sets of nozzle 7 mounting holes evenly distributed around its circumference, with each set of mounting holes spaced at 120° intervals. The nozzles 7 are fixed in the mounting holes via threaded connections. The water outlet axis of the nozzle 7 forms a 30° angle with the radial direction of the magnetic roller 8, and the water outlet of the nozzle 7 is 150mm from the surface of the roller. The nozzles 7 are connected to an external water supply system, with the water pressure controlled within the range of 0.3-0.5MPa.

[0033] In a preferred embodiment, the suction fan 23 is connected to the air inlet of the gas filter chamber 15 via a flange. The gas filter chamber 15 has a three-layer filtration structure: the first layer is a stainless steel wire mesh coarse filter layer, the middle layer is an activated carbon adsorption layer, and the last layer is a HEPA high-efficiency filter element. The suction pipe 4 is a corrugated flexible hose, and the suction port at the end of the suction pipe 4 is located 300mm directly above the material drop area of ​​the inclined plate 5, with a suction port diameter of 80mm.

[0034] In a preferred embodiment, the guide box 6 is welded and fixed to the side of the third support plate 24. The outlet of the guide box 6 has a funnel-shaped contraction structure with a contraction angle of 60°. The inlet 22 is located at the top of the bracket 9. The size of the inlet 22 is 10mm larger than the outlet of the guide box 6, and their central axes coincide.

[0035] In a preferred embodiment, the distance between the bottom discharge port of the waste collection hopper 1 and the feed end of the conveyor belt 3 is 50mm, and the height of the baffle 2 is half the width of the conveyor belt 3. The side wall of the waste collection hopper 1 is designed with an inclination angle of 70°, and the inner surface is polished.

[0036] In a preferred embodiment, the metal material box 10 is located 200mm below the magnetic roller 8 at the lowest point of the roller, and the impurity box 11 is located in the area where the tangential throwing trajectory of the roller lands. A partition with a height of 150mm is provided between the metal material box 10 and the impurity box 11.

[0037] Working principle: When foundry waste is fed into the waste collection hopper 1, it falls through the funnel-shaped outlet to the feed end of the conveyor belt 3. The conveyor belt 3 horizontally transports the waste at a speed of 0.5 m / s, with baffles 2 on both sides constraining the waste's movement path. After reaching the discharge end of the conveyor belt 3, the waste falls freely onto the surface of the inclined plate 5. At this time, the first motor 12 drives the eccentric shaft 18 to rotate at a speed of 300 rpm. The eccentric shaft 18 drives the connecting plate 14 to move through the second support plate 17, and the connecting plate 14 pushes the first support plate 16 to cause the support rod 19 to generate a 20 Hz vertical vibration. During the vibration, the wavy texture on the surface of the inclined plate 5 peels off the oxides on the metal surface, and the 30° inclination angle causes the waste to slide down at an average speed of 0.8 m / s.

[0038] After vibration treatment, the waste material falls into the feed inlet 22 through the funnel-shaped outlet of the guide box 6. At this time, the second motor 20 reduces its speed to 100 rpm through the reducer 29, and drives the large pulley 25 through the small pulley 26 and the transmission belt 27, causing the magnetic drum 8 to rotate at a low speed of 10 rpm. When the waste material flows through the magnetic drum 8, the magnetic metal is attracted to the surface of the drum and rotates with it, while non-magnetic impurities fall directly into the impurity box 11. When the attracted metal rotates with the drum to the scraper 21, the polyurethane blade scrapes off the metal particles into the metal box 10 with a gap of 0.5 mm. Three sets of nozzles 7 spray a water curtain at a 30° angle with a water pressure of 0.4 MPa to wash away residual impurities and cool the surface temperature of the drum.

[0039] During the vibration and material feeding process, the suction fan 23 forms a 25m diameter in the material feeding area of ​​the inclined plate 5. 3 A negative pressure airflow of / min draws dust-laden gas into the gas filtration chamber 15 via the suction pipe 4. The gas then passes through a stainless steel wire mesh to intercept large particles, activated carbon to adsorb harmful gases, and a HEPA filter to filter micron-sized dust particles, ensuring that the purified gas meets emission standards.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A device for processing waste materials after metal casting, comprising: A tabletop (13) on which a third support plate (24) is fixed. Support (9); Conveyor belt (3), the discharge end of the conveyor belt (3) faces the third support plate (24). A magnetic roller (8) is rotatably mounted on the bracket (9) via two bearing seats (28); Its features are: The device further includes a vibration mechanism, which includes a first motor (12) fixed to one side of the third support plate (24); An eccentric shaft (18) is provided, one end of which is connected to the output end of the first motor (12), and the eccentric shaft (18) is rotatably mounted on the third support plate (24). The second support plate (17) is rotatably mounted on the side of the eccentric shaft (18) away from the first motor (12); A connecting plate (14), the first end of which is rotatably mounted on the bottom of the second support plate (17), and the second end of which is rotatably mounted on the side of the third support plate (24); The first support plate (16) is rotatably mounted in the middle of the connecting plate (14); Support rod (19), the bottom end of which is rotatably mounted on the top of the first support plate (16); Inclined plate (5), the inclined plate (5) is fixed to the top of the support rod (19), the support rod (19) extends upward through the top of the third support plate (24), and the inclined plate (5) is located below the discharge end of the conveyor belt (3).

2. The metal casting waste treatment device according to claim 1, characterized in that, The device further includes a magnetic separation drive mechanism, the magnetic separation drive mechanism comprising: Second motor (20); The reducer (29) is fixed to the outside of the bracket (9), and the input shaft of the reducer (29) is connected to the output shaft of the second motor (20); Small pulley (26), the small pulley (26) is fixed to the end of the output shaft of the reducer (29); Large pulley (25), the large pulley (25) is fixed to the outer side of one end of the magnetic roller (8); A drive belt (27) is engaged between the large pulley (25) and the small pulley (26).

3. The metal casting waste treatment device according to claim 1, characterized in that, A scraper (21) is also fixed on the bracket (9), and the blade of the scraper (21) abuts against the outer peripheral wall of the magnetic roller (8).

4. The metal casting waste treatment device according to claim 1, characterized in that, A nozzle (7) is also fixed on the bracket (9), with the nozzle (7) facing the outer peripheral wall of the magnetic roller (8).

5. The metal casting waste treatment device according to claim 1, characterized in that, The device further includes a dust removal and filtration unit, which comprises: Fan (23); Gas filter chamber (15), the outlet of the suction fan (23) is connected to the gas filter chamber (15); The suction pipe (4) is connected at one end to the inlet of the suction fan (23), and the suction port at the other end of the suction pipe (4) is located near the material dropping area of ​​the inclined plate (5).

6. The metal casting waste treatment device according to claim 1, characterized in that, A guide box (6) is also fixed on the third support plate (24), and the guide box (6) is located at the inclined outlet of the inclined plate (5); The support (9) has a feed inlet (22), and the discharge port of the guide box (6) corresponds to the feed inlet (22).

7. The metal casting waste treatment device according to claim 1, characterized in that, The device also includes a waste collection hopper (1), which is located above the feed end of the conveyor belt (3); Baffles (2) are also fixed on both sides of the conveyor belt (3).

8. The metal casting waste treatment device according to claim 1, characterized in that, The bottom of the support (9) is provided with a metal material box (10) and an impurity box (11). The metal material box (10) is located in the material drop area behind the rotation path of the magnetic roller (8), and the impurity box (11) is located in the material drop area in front of the rotation path of the magnetic roller (8).

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