A crushing and washing device for scrap steel recycling

Abstract

This utility model provides a crushing and washing device for scrap steel recycling, including a frame, a washing device, a dewatering device, and a crushing device. The frame is installed on the ground, and the dewatering device is connected to the ground of the frame. The washing device and the crushing device are located above the dewatering device, with the crushing device positioned near the end of the dewatering device. The washing device and the crushing device are connected to the top surface of the frame via a sub-support. A water collection tank is located below the dewatering device, and the water collection tank is connected to the washing device via a pipe. This utility model integrates the frame, washing device, dewatering device, and crushing device, enabling efficient and continuous completion of scrap steel crushing, washing, and dewatering, significantly improving recycling efficiency, reducing the moisture content of the washed waste, and facilitating subsequent transportation and smelting.

Description

Technical Field

[0001] This utility model belongs to the field of solid waste recycling technology, specifically relating to a crushing and washing device for scrap steel recycling. Background Technology

[0002] In existing scrap steel recycling processes, two core steps are typically involved: crushing and washing. Scrap steel raw materials (such as scrapped car bodies and industrial equipment components) are large in volume and irregular in shape, requiring mechanical crushing by a shredder to break them down into smaller pieces that fit the feed size of the smelting furnace. After crushing, the scrap steel needs to have surface contaminants removed to ensure the purity of the molten steel. Current processes usually involve manual washing using spray equipment or soaking tanks. The washed wet material then needs to be separately transported to a centrifugal dewatering machine to separate the moisture. The scrap steel needs to be transferred between multiple pieces of equipment, and during this transfer, oily wastewater can easily leak, causing secondary pollution.

[0003] Therefore, the above problems urgently need to be solved. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, this utility model provides a crushing and washing device for scrap steel recycling, and provides an integrated equipment that can efficiently and continuously complete the crushing, washing and dewatering of scrap steel, so as to improve the efficiency and quality of scrap steel recycling, reduce subsequent processing steps and save water resources.

[0005] Technical Solution: To achieve the above objectives, this utility model provides a crushing and washing device for scrap steel recycling, including a frame, a washing device, a dewatering device, and a crushing device. The frame is installed on the ground, and the dewatering device is connected to the ground of the frame. The washing device and the crushing device are located on the upper side of the dewatering device, with the crushing device positioned near the end of the dewatering device. The washing device and the crushing device are connected to the top surface of the frame via a secondary support. A water collection tank is provided on the lower side of the dewatering device, and the water collection tank is connected to the washing device via a pipe. Traditional scrap steel recycling processes separate the crushing and washing processes, resulting in low efficiency, large space occupation, and high moisture content in the washed waste, which is not conducive to subsequent smelting. In this utility model, the crushing device crushes the scrap steel, and the crushed scrap steel falls into one end of the dewatering device. The washing device washes the scrap steel at one end of the dewatering device. The dewatering device begins to dewater the scrap steel. As dewatering proceeds, the scrap steel moves from one end of the dewatering device to the other end and is then discharged from the other end, resulting in the crushing, washing, and dewatering of paired scrap steel. Meanwhile, the wastewater discharged from the dewatering device enters the collection tank and is then pumped by the water pump inside the tank to the cleaning device, forming a cycle. This utility model integrates a frame, cleaning device, dewatering device, and crushing device, which can efficiently and continuously complete the crushing, cleaning, and dewatering of scrap steel, significantly improving recycling efficiency, reducing the moisture content of the waste after cleaning, and facilitating subsequent transportation and smelting.

[0006] Furthermore, in the aforementioned scrap steel recycling crushing and washing device, the crushing device includes an upper and lower open box. A guide hopper is connected to the upper opening of the box. Multiple cutter shafts are rotatably connected inside the box, and cutter discs are spaced apart along the axial direction, with adjacent cutter discs arranged alternately. A discharge port is integrally provided on the lower side of the box. A crushing motor is connected to the side wall of the box, and the motor shaft of the crushing motor is driven by one of the cutter shafts. The end of the cutter shaft away from the crushing motor extends out of the box, and a synchronous gear is connected to the end of the cutter shaft extending out of the box. Adjacent synchronous gears mesh with each other. By adopting a structure of multiple cutter shafts with staggered cutter discs, driven by the crushing motor, and then driven by the meshing of synchronous gears to drive the other shafts to rotate synchronously, large-volume scrap steel is crushed. The crushed scrap steel falls into the dewatering device from the discharge port on the lower side.

[0007] Furthermore, in the aforementioned scrap steel recycling crushing and washing device, the guide hopper includes an upper flared opening, a middle guide opening, and a lower flared opening, which are integrally arranged sequentially. The lower flared opening has a skirt that connects to the housing. The middle guide opening has a square cross-section, the upper flared opening is designed to gradually decrease in size from top to bottom, and the lower flared opening is designed to gradually increase in size from top to bottom. Designating the guide hopper as an upper flared opening, a middle guide opening, and a lower flared opening facilitates the entry of scrap steel from the upper flared opening. After passing through the middle and lower flared openings, the scrap steel enters the lower flared opening through the narrower guide opening, which helps guide the scrap steel into the correct position. The wider lower flared opening allows for a brief pause and buffering of the scrap steel, while the narrower and longer guide opening prevents the scrap steel from flying out during the crushing process, improving safety.

[0008] Furthermore, in the aforementioned scrap steel recycling crushing and washing device, multiple water nozzles are installed on the side wall of the lower flared opening. These nozzles are arranged circumferentially around the lower flared opening and are positioned outside the projection of the central feed inlet. The water nozzles are connected to water pipes. When the scrap steel enters the lower flared opening, the nozzles spray washing fluid to clean the scrap steel, reducing the temperature rise caused by the crushing process and improving the recycling quality. Positioning the nozzles outside the projection of the central feed inlet avoids interference with the material feeding, reduces contact between the scrap steel and the nozzles, and extends the service life of the nozzles.

[0009] Furthermore, in the aforementioned scrap steel recycling crushing and cleaning device, the cleaning device includes a water tank and a spray box connected to the top surface of the auxiliary support. The water tank and the collection tank are connected by pipes, and the water tank and the spray box are also connected by pipes. The bottom surface of the spray box is equipped with spray holes arranged in a grid pattern. Water drawn from the collection tank passes through the water tank and is sprayed out from the spray box to clean the scrap steel. The spray box is designed to create negative pressure during the spraying process, increasing the flow rate and improving the cleaning effect.

[0010] Furthermore, in the aforementioned scrap steel recycling crushing and washing device, the dewatering device includes a screen box, which is connected to the top surface of the frame via elastic supports. A screen mesh is connected to the bottom surface of the screen box, and a crossbeam is connected to the upper opening of the screen box. A vibrator is connected to the crossbeam. The vibrator drives the screen box to vibrate, achieving simultaneous smooth discharge of scrap steel and efficient dewatering, thereby improving processing efficiency.

[0011] Furthermore, in the aforementioned scrap steel recycling crushing and washing device, the elastic support includes a first support column and a second support column. The first support column is positioned higher than the second support column and is located on the side away from the crushing device. Each of the first and second support columns includes an outer guide sleeve and an inner guide column slidably connected inside the outer guide sleeve. A spring is connected inside the inner guide column, with both ends of the spring abutting against the outer guide sleeve and the inner guide column, respectively. The spring applies a thrust to the outer guide sleeve, maintaining a distance between the lower end of the outer guide sleeve and the lower end of the inner guide column. The higher position of the first support column causes the screen to be tilted. During dewatering, water moves towards the second support column due to gravity, while the scrap steel moves towards the first support column due to vibration, improving dewatering efficiency.

[0012] Furthermore, in the aforementioned scrap steel recycling crushing and washing device, the screen box includes a side wall, a baffle, and a guide plate. The side wall runs along the long side of the frame and is located on both sides of the screen. The baffle is connected to the side wall near the crushing device and blocks the crushed material. The guide plate is connected to the side wall away from the crushing device and is inclined downwards. The baffle prevents the material from detaching from the screen and collects wastewater.

[0013] Furthermore, in the aforementioned scrap steel recycling crushing and washing device, the vibrator is a vibrating motor vibrator, rotating from the first support column to the second support column. During the rotation of the vibrating motor vibrator, the eccentric blocks at both ends rotate to generate centrifugal force, forming an excitation force. This excitation force is transmitted to the screen, and the scrap steel, subjected to both vibration and its own gravity, is thrown up and undergoes a jumping motion. Specifically, when the eccentric blocks rotate downwards, the screen box moves downwards and towards the second support column, while the scrap steel moves downwards under its own gravity. When the eccentric blocks rotate upwards, the scrap steel is thrown up and undergoes a jumping motion towards the first support column, repeating this process along the screen surface. During the downward and upward movement of the scrap steel, the scrap steel continuously changes direction, achieving moisture separation and dehydration.

[0014] Furthermore, in the aforementioned scrap steel recycling crushing and washing device, a reinforcing plate is welded to the side wall of the frame. The reinforcing plate is located at the connection between the frame and the sub-support, and the reinforcing plate and the sub-support are connected by fasteners. The reinforcing plate improves the connection strength between the sub-support and the frame, thereby enhancing the stability of the device.

[0015] As can be seen from the above technical solution, this utility model has the following beneficial effects: The scrap steel recycling crushing and washing device of this utility model integrates a frame, washing device, dewatering device, and crushing device, enabling efficient and continuous completion of scrap steel crushing, washing, and dewatering, significantly improving recycling efficiency, reducing the moisture content of the washed waste, and facilitating subsequent transportation and smelting. Water nozzles are installed for preliminary washing of the scrap steel, reducing the temperature rise caused by the crushing process and improving recycling quality. The vibrator drives the screen box to vibrate, achieving simultaneous smooth discharge and efficient dewatering of the scrap steel, thus improving processing efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the scrap steel recycling crushing and washing device of this utility model;

[0017] Figure 2 As shown Figure 1 A magnified view of a portion of the image;

[0018] Figure 3 This is a schematic diagram of the internal structure of the crushing device;

[0019] Figure 4 As shown Figure 1 A magnified view of a portion of the image;

[0020] Figure 5 This is a schematic diagram of the dehydration device.

[0021] Figure 6 This is a front view of the first support column;

[0022] Figure 7 This is a front view of the second support column.

[0023] In the diagram: 1. Frame, 11. Sub-support, 12. Reinforcing plate, 2. Cleaning device, 21. Water tank, 22. Spray box, 3. Dewatering device, 31. Screen box, 32. Elastic support, 3211. Outer guide sleeve, 3212. Inner guide column, 33. Screen, 34. Vibrator, 41. Box body, 42. Guide hopper, 43. Cutter shaft, 44. Crushing motor, 45. Synchronous gear, 310. Crossbeam, 311. Side wall, 312. Baffle, 313. Guide plate, 321. First support column, 322. Second support column, 4. Crushing device, 411. Discharge port, 421. Upper flared port, 422. Middle guide port, 423. Lower flared port, 424. Water nozzle, 431. Cutter disc, 5. Water collection tank. Detailed Implementation Example

[0024] like Figure 1The scrap steel recycling crushing and washing device shown includes a frame 1, a washing device 2, a dewatering device 3, and a crushing device 4. The frame 1 is installed on the ground, and the dewatering device 3 is connected to the ground of the frame 1. The washing device 2 and the crushing device 4 are located on the upper side of the dewatering device 3, with the crushing device 4 positioned near the end of the dewatering device 3. The washing device 2 and the crushing device 4 are connected to the top surface of the frame 1 via a secondary support 11. A water collection tank 5 is located on the lower side of the dewatering device 3, and the water collection tank 5 is connected to the washing device 2 via a pipe.

[0025] like Figure 2-3 The scrap steel recycling crushing and washing device shown includes a crushing device 4 comprising a box 41 with openings at both ends. A guide hopper 42 is connected to the upper opening of the box 41. Multiple cutter shafts 43 are rotatably connected inside the box 41, and cutter discs 431 are spaced apart along the axial direction of the cutter shafts 43, with adjacent cutter discs 431 arranged alternately. A discharge port 411 is integrally provided on the lower side of the box 41. A crushing motor 44 is connected to the side wall of the box 41, and the motor shaft of the crushing motor 44 is driven by one of the cutter shafts 43. The end of the cutter shaft 43 away from the crushing motor 44 extends out of the box 41, and a synchronous gear 45 is connected to the end of the cutter shaft 43 extending out of the box 41. Adjacent synchronous gears 45 are meshed together. By adopting the structure of multiple cutter shafts 43 with staggered cutter discs 431, driven by the crushing motor 44, and then driven by the meshing of the synchronous gears 45 to drive the other shafts to rotate synchronously, large-volume scrap steel is crushed. The crushed scrap steel falls into the dewatering device 3 from the discharge port 411 on the lower side.

[0026] In this embodiment, the guide hopper 42 includes an upper flared opening 421, a middle guide opening 422, and a lower flared opening 423, which are integrally arranged sequentially. The lower flared opening 423 has a skirt that connects to the housing 41. The middle guide opening 422 has a square cross-section. The upper flared opening 421 is designed with an opening that gradually decreases in size from top to bottom, while the lower flared opening 423 is designed with an opening that gradually increases in size from top to bottom. The design of the guide hopper 42 as an upper flared opening 421, middle guide opening 422, and lower flared opening 423 facilitates the entry of scrap steel from the upper flared opening 421. The scrap steel passes through the middle guide opening 422 and the lower flared opening 423. The narrower guide opening 422 leads to the lower flared opening 423, which helps guide the scrap steel into the correct position. The wider lower flared opening 423 allows for a brief pause and buffering of the scrap steel. Simultaneously, the narrower and longer guide opening 422 prevents the scrap steel from flying out during the crushing process, improving safety.

[0027] In this embodiment, multiple water nozzles 424 are provided on the side wall of the lower funnel 423. The water nozzles 424 are arranged circumferentially around the lower funnel 423 and are located outside the projection of the middle feed inlet 422. The water nozzles 424 are connected to water pipes. When scrap steel enters the lower funnel 423, the water nozzles 424 spray cleaning fluid to clean the scrap steel, which can reduce the temperature rise caused by the crushing process and improve the recycling quality. The water nozzles 424 are located outside the projection of the middle feed inlet 422 to avoid interference with the feeding, reduce the contact between the scrap steel and the water nozzles 424, and improve the service life of the water nozzles 424.

[0028] like Figure 4 The scrap steel recycling crushing and cleaning device shown includes a cleaning device 2 comprising a water tank 21 and a spray box 22 connected to the top surface of a secondary support 11. The water tank 21 and a water collection tank 5 are connected by pipes, and the water tank 21 and the spray box 22 are also connected by pipes. The bottom surface of the spray box 22 is equipped with spray holes arranged in a grid pattern. Water drawn from the water collection tank 5 passes through the water tank 21 and is sprayed out of the spray box 22 to clean the scrap steel. The water tank 21 is equipped with a filtration system to filter the water and prevent secondary pollution. The spray box 22 is designed to create negative pressure during the spraying process, increasing the flow rate and improving the cleaning effect.

[0029] like Figure 5-7 The scrap steel recycling crushing and washing device shown includes a dewatering device 3 comprising a screen box 31. The screen box 31 is connected to the top surface of the frame 1 via an elastic support 32. A screen mesh 33 is connected to the bottom surface of the screen box 31. A crossbeam 310 is connected to the upper opening of the screen box 31, and a vibrator 34 is connected to the crossbeam 310. The vibrator 34 drives the screen box 31 to vibrate, achieving simultaneous smooth discharge of scrap steel and efficient dewatering, thereby improving processing efficiency.

[0030] In this embodiment, the elastic support 32 includes a first support column 321 and a second support column 322. The first support column 321 is positioned higher than the second support column 322 and is located on the side away from the crushing device 4. The first support column 321 and the second support column 322 each include an outer guide sleeve 3211 and an inner guide column 3212 slidably connected inside the outer guide sleeve 3211. A spring is connected inside the inner guide column 3212, with both ends of the spring abutting against the outer guide sleeve 3211 and the inner guide column 3212, respectively. The spring applies a thrust to the outer guide sleeve 3211, maintaining a distance between the lower end of the outer guide sleeve 3211 and the lower end of the inner guide column 3212. The higher position of the first support column 321 causes the screen 33 to be tilted. During dewatering, water moves towards the second support column 322 under gravity, while scrap steel moves towards the first support column 321 under vibration, improving dewatering efficiency.

[0031] In this embodiment, the screen box 31 includes a side wall 311, a baffle 312, and a guide plate 313. The side wall 311 is located along the long side of the frame 1 and on both sides of the screen 33. The baffle 312 is connected to the side wall 311 near the crushing device 4 and blocks the crushed material. The guide plate 313 is connected to the side wall 311 away from the crushing device 4 and is inclined downwards. The baffle 312 prevents the material from detaching from the screen and collects wastewater.

[0032] In this embodiment, the vibrator 34 is a vibrating motor vibrator, and the rotation direction of the vibrating motor vibrator is set from the first support column 321 to the second support column 322. During the rotation of the vibrating motor vibrator, the eccentric blocks at both ends rotate to generate centrifugal force, forming an excitation force. The excitation force is transmitted to the screen, and the scrap steel is subjected to the dual effects of vibration and its own gravity, being thrown up and generating a jumping motion. Specifically, when the eccentric blocks rotate downward, the screen box 31 moves downward and towards the second support column 322, and the scrap steel moves downward under its own gravity. When the eccentric blocks rotate upward, the scrap steel is thrown up and generates a jumping motion towards the first support column 321, repeating this process along the screen surface. During the downward and upward movement of the scrap steel, the scrap steel continuously changes direction, achieving moisture separation and dehydration.

[0033] In this embodiment, a reinforcing plate 12 is welded to the side wall of the frame 1 (e.g., Figure 1 A reinforcing plate 12 is provided at the connection between the frame 1 and the sub-support 11, and the reinforcing plate 12 and the sub-support 11 are connected by fasteners. The reinforcing plate 12 improves the connection strength between the sub-support 11 and the frame 1, and improves the stability of the device.

[0034] This utility model includes the following steps in the scrap steel recycling process:

[0035] Step 1: Crushing; Scrap steel is poured into the feed hopper 42, entering through the upper funnel 421, guided by the middle feed inlet 422, and then entering the lower funnel 423, falling between the cutter shafts 43, where it is crushed by the cutter discs 431. The crushed scrap steel passes through the cutter shafts 43 and falls onto the screen 33 through the discharge port 411. During this process, the water nozzle 424 sprays cleaning fluid to initially clean the scrap steel and simultaneously reduce the temperature rise.

[0036] Step 2: Cleaning; The water pump installed in the water collection tank 5 sends water into the water tank 21. The water enters the spray box 22 from the water tank 21 and is sprayed out. The vibrator 34 drives the screen box 31 to vibrate. The scrap steel on the screen 33 jumps towards the first support column 321 under the excitation. When the scrap steel passes under the spray box 22, the scrap steel on the screen 33 is sprayed and cleaned.

[0037] Step 3: Dehydration; After passing through the spray box 22, the scrap steel is excited and jumps towards the first support column 321. During the process of moving down and being thrown up, the scrap steel constantly changes direction to achieve water separation and dehydration.

[0038] Step 4: Discharge: After the scrap steel moves from the screen 33 to the guide plate 313, the scrap steel slides out along the guide plate 313 under the action of gravity, and the discharge is completed.

[0039] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A crushing and washing device for scrap steel recycling, characterized in that: The device includes a frame (1), a cleaning device (2), a dewatering device (3), and a crushing device (4). The frame (1) is installed on the ground, and the dewatering device (3) is connected to the ground of the frame (1). The cleaning device (2) and the crushing device (4) are located on the upper side of the dewatering device (3). The crushing device (4) is located near the end of the dewatering device (3). The cleaning device (2) and the crushing device (4) are connected to the top surface of the frame (1) through a sub-support (11). A water collection tank (5) is provided on the lower side of the dewatering device (3). The water removed from the dewatering device (3) is discharged into the water collection tank (5). The water collection tank (5) is connected to the cleaning device (2) through a pipe.

2. The scrap steel recycling crushing and washing device according to claim 1, characterized in that: The crushing device (4) includes a box (41) with openings at the top and bottom. A guide hopper (42) is connected to the opening at the top of the box (41). Multiple cutter shafts (43) are rotatably connected inside the box (41). The cutter shafts (43) are provided with cutter discs (431) spaced apart along the axial direction. Adjacent cutter discs (431) are arranged alternately. A discharge port (411) is integrally provided on the lower side of the box (41). A crushing motor (44) is connected to the side wall of the box (41). The crushing motor (44) and one of the cutter shafts (43) are driven and connected. The cutter shaft (43) extends out of the box (41) at one end away from the crushing motor (44). A synchronous gear (45) is connected to the end of the cutter shaft (43) extending out of the box (41). Adjacent synchronous gears (45) are meshed and connected.

3. The scrap steel recycling crushing and washing device according to claim 2, characterized in that: The feed hopper (42) includes an upper flared opening (421), a middle feed inlet (422), and a lower flared opening (423). The upper flared opening (421), the middle feed inlet (422), and the lower flared opening (423) are integrally arranged in sequence. The lower flared opening (423) is provided with a skirt that connects to the box body (41). The middle feed inlet (422) has a square cross-section. The upper flared opening (421) is designed with an opening that gradually decreases from top to bottom, and the lower flared opening (423) is designed with an opening that gradually increases from top to bottom.

4. The crushing and washing device for scrap steel recycling according to claim 3, characterized in that: The lower flared opening (423) has multiple water nozzles (424) on its side wall. The water nozzles (424) are arranged around the lower flared opening (423) and are located outside the projection of the middle feed inlet (422).

5. The scrap steel recycling crushing and washing device according to claim 1, characterized in that: The cleaning device (2) includes a water tank (21) and a spray box (22) connected to the top surface of the sub-support (11). The water tank (21) and the water collection tank (5) are connected by a pipe. The water tank (21) and the spray box (22) are connected by a pipe. The bottom surface of the spray box (22) is provided with spray holes, which are arranged in a grid array.

6. The scrap steel recycling crushing and washing device according to claim 1, characterized in that: The dewatering device (3) includes a screen box (31), which is connected to the top surface of the frame (1) via an elastic support (32). A screen mesh (33) is connected to the bottom surface of the screen box (31), and a crossbeam (310) is connected to the upper opening of the screen box (31). A vibrator (34) is connected to the crossbeam (310).

7. The scrap steel recycling crushing and washing device according to claim 6, characterized in that: The elastic support (32) includes a first support column (321) and a second support column (322). The first support column (321) is set higher than the second support column (322) and is located on the side away from the crushing device (4). The first support column (321) and the second support column (322) each include an outer guide sleeve (3211) and an inner guide column (3212) slidably connected inside the outer guide sleeve (3211). A spring is connected inside the inner guide column (3212), and the two ends of the spring abut against the outer guide sleeve (3211) and the inner guide column (3212) respectively. The spring applies a thrust to the outer guide sleeve (3211) to keep the lower end of the outer guide sleeve (3211) and the lower end of the inner guide column (3212) at a distance.

8. The scrap steel recycling crushing and washing device according to claim 6, characterized in that: The screen box (31) includes a side wall (311), a baffle (312) and a guide plate (313). The side wall (311) is along the long side of the frame (1) and is located on both sides of the screen (33). The baffle (312) is connected to the side wall (311) near the crushing device (4) and blocks the crushed material. The guide plate (313) is connected to the side wall (311) away from the crushing device (4) and is inclined downward.

9. The scrap steel recycling crushing and washing device according to claim 6, characterized in that: The exciter (34) is configured as a vibration motor exciter.

10. The scrap steel recycling crushing and washing device according to claim 1, characterized in that: The frame (1) has a reinforcing plate (12) welded to its side wall. The reinforcing plate (12) is located at the connection between the frame (1) and the sub-support (11). The reinforcing plate (12) and the sub-support (11) are connected by fasteners.

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