Magnetic cleaning device for foundry waste sand and cold iron and cleaning method thereof

Abstract

The present application relates to waste sand cold iron cleaning tooling technical field, specifically to a kind of magnetic separation cleaning device and cleaning method of casting waste sand cold iron, the device includes support and install on the support magnetic suction mechanism and scraping mechanism;Support is erected at the outside of work surface;Magnetic suction mechanism and scraping mechanism can all be vertically lifted;Magnetic suction mechanism can adsorb cold iron on work surface;Scraping mechanism can move in horizontal plane along first direction, to scrape off waste sand on work surface;Wherein, after magnetic suction mechanism completes the adsorption of cold iron on work surface, scraping mechanism again scrapes off surplus material on work surface.Magnetic suction mechanism filters out most of cold iron from material in advance, reduces subsequent screening operation intensity of surplus material, improves the screening efficiency of waste sand and cold iron;Reduce the overall hardness of material, in turn reduce the collision force and wear of material and scraping mechanism, prolong the service life of equipment;When scraper scraping, the resistance of material is reduced, and the scraping effect is improved.

Description

Technical Field

[0001] This invention relates to the field of waste sand chill cleaning tooling technology, specifically to a magnetic separation cleaning device and cleaning method for waste sand chills from castings. Background Technology

[0002] Currently, most foundries choose to use sand casting to obtain casting blanks. However, castings produced by this method contain waste sand and chills. After pouring, the waste sand can be restored to its original properties by removing impurities, absorbing ash, cooling, and remixing. Chills can accelerate the local cooling rate of the casting and are reusable. Therefore, waste sand and chills need to be recycled after the casting is molded.

[0003] Waste sand and chills are typically cleaned manually, a continuous process required to ensure a clean work surface. However, manual cleaning is labor-intensive and inefficient. Some foundries use mechanical scrapers to clean waste sand and chills, but the presence of chills in the waste sand creates significant resistance when scraping, making it difficult to thoroughly clean the work surface. This often necessitates manual intervention, requiring further cleaning and reducing overall efficiency. Summary of the Invention

[0004] (a) Technical problems to be solved In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a magnetic separation cleaning device and method for waste sand and chills in castings, which solves the technical problem of low cleaning efficiency of waste sand and chills generated after sand casting.

[0005] (II) Technical Solution To achieve the above objectives, the magnetic separation cleaning device for casting waste sand chills of the present invention includes a support and a magnetic attraction mechanism and a scraping mechanism installed on the support. The support is mounted on the outside of the working surface; both the magnetic attraction mechanism and the scraping mechanism can be raised and lowered vertically; the magnetic attraction mechanism can attract cold iron on the working surface; the scraping mechanism can move in a first direction in the horizontal plane to scrape off waste sand on the working surface. After the magnetic attraction mechanism attracts the chilled iron on the working surface, the scraping mechanism then scrapes off the remaining material on the working surface.

[0006] Optionally, the magnetic separation cleaning device for casting waste sand chills further includes a transfer mechanism; the transfer mechanism includes a transport track and multiple transport vehicles arranged on the transport track; The transport vehicle moves laterally on the transport track; the magnetic attraction mechanism is installed on the top of the support; the scraping mechanism is installed on the crossbeam of the support; the first direction is longitudinal; the top surface of the transport vehicle is the working surface.

[0007] Optionally, the magnetic attraction mechanism includes a mounting frame, a magnetic separator, a first lifting driver, and multiple first guide rods; The mounting bracket is connected to the top surface of the crossbeam of the support. The first lifting drive is mounted on the mounting frame; the magnetic separator is mounted inside the mounting frame; the telescopic rod of the first lifting drive is connected to the magnetic separator; The first guide rod is slidably connected to the mounting frame in a vertical direction; multiple first guide rods are provided at the top of the magnetic separator.

[0008] Optionally, the scraping mechanism includes a telescopic driver, a second lifting driver, a slide plate, a scraper, and a pair of slide bars; The telescopic actuator is mounted on the side wall of the crossbeam of the bracket; The second lifting driver is mounted on the top surface of the slide plate, and the second lifting driver is connected to the push rod of the telescopic driver; the output shaft of the second lifting driver passes through the slide plate and is connected to the scraper; the scraper is mounted on the bottom surface of the slide plate; A pair of slide rods are arranged parallel to each other on the inner side of the bracket; the two ends of the slide plate are slidably connected to the pair of slide rods in the longitudinal direction.

[0009] Optionally, the scraper includes a connecting plate, a transition plate, a push plate, a hinge seat, and an elastic telescopic rod; The connecting plate is perpendicularly connected to the adapter plate; the push plate is parallel to the adapter plate. The connecting plate is connected to the push rod of the second lifting driver; the hinge seat is provided on the end face of the adapter plate; the hinge seat is hinged to the first end face of the push plate; the elastic telescopic rod is also provided between the first end face and the adapter plate.

[0010] Optionally, the end face of the push plate that faces away from the adapter plate is the second end face; An elastic plate is arranged parallel to the second end face.

[0011] Optionally, a pair of push plates are provided on the lower side of the connecting plate in a mirror image.

[0012] Optionally, a pair of parallel locking strips are provided on the top surface of the transport vehicle; the locking strips are arranged longitudinally. The working surface is the plane between a pair of the card strips on the same transport vehicle, and the plane between an adjacent pair of the card strips on adjacent transport vehicles; The push plate is capable of moving longitudinally between a pair of adjacent card strips; the distance between a pair of elastic plates is not greater than the transverse dimension of the card strips.

[0013] Optionally, a pressure sensor is provided between the adapter plate and the push plate.

[0014] Furthermore, the present invention also provides a method for cleaning waste sand chills, the method being implemented based on the magnetic separation cleaning device for casting waste sand chills as described above, the cleaning method comprising: The material on the work surface is cleaned in layers, including cleaning the top layer, the second layer and the bottom layer that are distributed vertically. S1. The magnetic attraction mechanism moves vertically to the height of the uppermost layer, completes the first adsorption of cold iron on the working surface, and then resets; the scraping mechanism moves longitudinally to the height of the uppermost layer, completes the first scraping of the working surface, and then resets. S2. The magnetic attraction mechanism moves vertically to the height of the second layer, completes the second adsorption of cold iron on the working surface, and then resets; the scraping mechanism moves longitudinally to the height of the second layer, completes the second scraping of the working surface, and then resets. Based on S1 and S2, continue until the cleaning of the lowest layer is completed.

[0015] (III) Beneficial Effects The beneficial effects of this invention are: During operation, after the magnetic attraction mechanism attracts the chills to the working surface, the scraping mechanism removes the remaining material. Firstly, the magnetic attraction mechanism removes most of the chills from the material beforehand, reducing the intensity of subsequent screening of the remaining material and improving the screening efficiency of waste sand and chills. Secondly, removing most of the chills reduces the overall hardness of the material, thereby reducing the collision force and wear between the material and the scraping mechanism, extending the equipment's service life. Thirdly, with most of the chills removed, the resistance encountered by the scraper during scraping is reduced, improving the scraping effect and ensuring a clean working surface.

[0016] The cleaning of waste sand and chilled iron is automated by using a magnetic separation cleaning device. The overall cleaning effect is better than that of manual cleaning and single mechanical scraper cleaning. No manual intervention is required, reducing the workload and effectively eliminating the safety hazards of manual cleaning. Attached Figure Description

[0017] Figure 1 This is a perspective view of the magnetic separation cleaning device for casting waste sand chills according to the present invention; Figure 2 This is a front view of the magnetic separation cleaning device for casting waste sand chills according to the present invention; Figure 3 This is a schematic diagram of the magnetic attraction mechanism of the present invention; Figure 4 This is a schematic diagram of the scraping mechanism of the present invention; Figure 5 This is a schematic diagram showing the connection between the skateboard and the scraper of the present invention.

[0018] [Explanation of Labels in the Attached Image] 1: Bracket; 2: Magnetizing mechanism; 21: Mounting frame; 22: Magnetic separator; 23: First lifting drive; 24: First guide rod; 3: Scraping mechanism; 31: Telescopic driver; 32: Second lifting driver; 33: Slide plate; 34: Scraper; 341: Connecting plate; 342: Adapter plate; 343: Push plate; 344: Hinge seat; 345: Elastic telescopic rod; 35: Slide rod; 36: Elastic plate; 37: Second guide rod; 4: Transfer mechanism; 41: Transport track; 42: Transport vehicle; 421: Track. Detailed Implementation

[0019] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0021] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] See Figure 1 and Figure 2 This invention provides a magnetic separation cleaning device for casting waste sand chills. The magnetic separation cleaning device includes a support 1 and a magnetic attraction mechanism 2 and a scraping mechanism 3 installed on the support 1. The support 1 is set on the outside of the working surface. Both the magnetic attraction mechanism 2 and the scraping mechanism 3 can be raised and lowered vertically. The magnetic attraction mechanism 2 can attract chills on the working surface. The scraping mechanism 3 can move in a first direction in the horizontal plane to scrape off the waste sand on the working surface. After the magnetic attraction mechanism 2 completes the attraction of chills on the working surface, the scraping mechanism 3 then scrapes off the remaining material on the working surface.

[0024] The working surface is located inside the support 1, that is, below the magnetic attraction mechanism 2 and the scraping mechanism 3. Material (waste sand and chills) is piled up on the working surface. The magnetic attraction mechanism 2 can move vertically, and the scraping mechanism 3 can move vertically and in a first direction, which is a single direction on the horizontal plane. The magnetic attraction mechanism 2 and the scraping mechanism 3 clean the material to ensure that the working surface is clean and does not affect subsequent feeding and operation.

[0025] Chilled iron is a metal and can be magnetically attracted by the magnetic attraction mechanism 2. In this embodiment, most of the chilled iron is drawn out of the material. After the magnetic attraction mechanism 2 loses its magnetism, the chilled iron on it naturally falls into the chilled iron collection box on the magnetic attraction mechanism 2. The remaining material (waste sand and residual chilled iron) is then scraped off by the scraping mechanism 3 and stored in the residual material collection box placed on the side of the support 1. The residual material collection box is then further screened manually. The screened chilled iron is integrated with the chilled iron in the chilled iron collection box, thus completing the screening of waste sand and chilled iron. The waste sand and chilled iron can then be reused in production, saving production costs.

[0026] During operation, after the magnetic attraction mechanism 2 attracts the chills on the working surface, the scraping mechanism 3 then scrapes away the remaining material. Firstly, the magnetic attraction mechanism 2 removes most of the chills from the material beforehand, reducing the intensity of subsequent screening of the remaining material and improving the screening efficiency of waste sand and chills. Secondly, removing most of the chills reduces the overall hardness of the material, thereby reducing the collision force and wear between the material and the scraping mechanism 3, extending the equipment's service life. Thirdly, with most of the chills removed, the resistance encountered by the scraper during scraping is reduced, improving the scraping effect and ensuring a clean working surface.

[0027] The cleaning of waste sand and chilled iron is automated by using a magnetic separation cleaning device. The overall cleaning effect is better than that of manual cleaning and single mechanical scraper cleaning. No manual intervention is required, reducing the workload and effectively eliminating the safety hazards of manual cleaning.

[0028] Furthermore, the magnetic separation cleaning device for casting waste sand and chills also includes a transfer mechanism 4; the transfer mechanism 4 includes a transport track 41 and multiple transport vehicles 42 set on the transport track 41; the transport vehicles 42 move laterally on the transport track 41; the magnetic attraction mechanism 2 is installed on the top of the support 1; the scraping mechanism 3 is installed on the crossbeam of the support 1, the support 1 is formed by connecting multiple crossbeams and multiple columns, the multiple crossbeams form a square opening, and are set on the top of the multiple columns; the first direction is longitudinal; the top surface of the transport vehicle 42 is the working surface. In this embodiment, after the transport vehicle 42 transfers the casting blank to the designated station, some waste sand and chills will fall from the casting blank onto the top surface of the transport vehicle 42, so the transport vehicle 42 needs to be moved to the magnetic separation cleaning device for cleaning, that is, the top surface of the transport vehicle 42 needs to be cleaned, and only after cleaning can the transport vehicle 42 be put back into use. Specifically, the transport track 41 is arranged laterally, allowing the transport vehicle 42 to pass through the inside of the support 1, and to work with the magnetic attraction mechanism 2 and the scraping mechanism 3 to clean up the waste sand and chills. The magnetic attraction mechanism 2 is installed on the top of the support 1, that is, above the scraping mechanism 3. This spatial arrangement allows the magnetic attraction mechanism 2 and the scraping mechanism 3 to complete the cleaning operation with the shortest possible movement path, saving energy costs.

[0029] See Figure 3The magnetic attraction mechanism 2 includes a mounting frame 21, a magnetic separator 22, a first lifting driver 23, and multiple first guide rods 24. The mounting frame 21 is connected to the top surface of the crossbeam of the support 1. The first lifting driver 23 is mounted on the mounting frame 21. The magnetic separator 22 is located inside the mounting frame 21. The telescopic rod of the first lifting driver 23 is connected to the magnetic separator 22. The first guide rods 24 are slidably connected to the mounting frame 21 vertically. Multiple first guide rods 24 are provided at the top of the magnetic separator 22. Specifically, the mounting frame 21 is mounted at the top of the crossbeam of the support 1, increasing the inner space of the support 1, thereby expanding the lifting space of the magnetic attraction mechanism 2 and the scraping mechanism 3, and improving the operational flexibility of the magnetic attraction mechanism 2 and the scraping mechanism 3. The magnetic separator 22 is an existing device. When powered on, it can attract cold iron. When powered off, the attraction force disappears, and the cold iron separates from the magnetic separator 22. The first lifting driver 23 drives the magnetic separator 22 to move vertically through its telescopic rod, cooperating with the magnetic separator 22 to attract cold iron in the material. The mounting frame 21 guides the vertical lifting and lowering of the magnetic separator 22 via the first guide rod 24, ensuring the stability and accuracy of the transmission.

[0030] like Figure 4 As shown, the scraping mechanism 3 includes a telescopic driver 31, a second lifting driver 32, a slide plate 33, a scraper 34, and a pair of sliding rods 35. The telescopic driver 31 is mounted on the side wall of the crossbeam of the support 1. The second lifting driver 32 is mounted on the top surface of the slide plate 33 and is connected to the push rod of the telescopic driver 31. The output shaft of the second lifting driver 32 passes through the slide plate 33 and is connected to the scraper 34. The scraper 34 is mounted on the bottom surface of the slide plate 33. The pair of sliding rods 35 are arranged parallel to each other on the inner side of the support 1. The two ends of the slide plate 33 are slidably connected longitudinally to the pair of sliding rods 35. Specifically, the first lifting driver 23, the second lifting driver 32, and the telescopic driver 31 can be selected as cylinders, electric push rods, or hydraulic cylinders. The telescopic driver 31 can drive the scraper 34 to move longitudinally, and the second lifting driver 32 can drive the scraper 34 to move vertically. The slide plate 33 slides longitudinally along the inner side of the support 1 via a pair of slide rods 35, allowing the scraper 34 to scrape material longitudinally. This works in conjunction with the laterally moving transport vehicle 42 and the second lifting drive 32 to perform cleaning operations, removing material from the top surface of the transport vehicle 42 via the scraper 34. The spatial layout is reasonable, and it is highly adaptable to cleaning materials of varying thicknesses.

[0031] See Figure 5The scraper 34 includes a connecting plate 341, a transition plate 342, a push plate 343, a hinge seat 344, and an elastic telescopic rod 345. The connecting plate 341 is perpendicularly connected to the transition plate 342; the push plate 343 is parallel to the transition plate 342; the connecting plate 341 is connected to the push rod of the second lifting driver 32; a hinge seat 344 is provided on the end face of the transition plate 342; the hinge seat 344 is hinged to the first end face of the push plate 343; an elastic telescopic rod 345 is also provided between the first end face and the transition plate 342. In this embodiment, the connecting plate 341 and the transition plate 342 are constructed as L-shaped plates, and a pair of second guide rods 37 are provided at the top of the connecting plate 341. The second guide rods 37 are slidably connected to the slide plate 33 in the vertical direction to guide the vertical movement of the scraper 34, thereby improving the vertical lifting accuracy of the scraper 34. The second guide rods 37 can also improve the structural strength of the scraper 34 and enhance the stability of the scraping process. The push plate 343, hinge seat 344, elastic telescopic rod 345, and adapter plate 342 form a material jamming and avoidance module. When the push plate 343 collides with materials, such as large-volume chills, during the scraping process on the top surface of the transport vehicle 42, the push plate 343 rotates around the hinge seat 344, and the elastic telescopic rod 345 is compressed, thus buffering the collision force. At the same time, the hinge structure allows the push plate 343 to scrape over the top of the large-volume chills, effectively avoiding material jamming. The large-volume chills are then scraped off the working surface after the push plate 343 descends further. Furthermore, when the scraping mechanism 3 returns from the jamming state to its original position, the elastic telescopic rod 345 resets, allowing the push plate 343 to automatically reset without manual intervention, ensuring cleaning efficiency.

[0032] Furthermore, the end face of the pusher plate 343 facing away from the adapter plate 342 is the second end face; an elastic plate 36 is arranged parallel to the second end face. The elastic plate 36 can be a rubber plate, so that the elastic plate 36 can buffer the collision force between the material and the pusher plate 343, thereby improving the reliability of scraping (or pushing).

[0033] Secondly, a pair of push plates 343 are mirror-imagely arranged below the connecting plate 341, and a corresponding adapter plate 342, hinge seat 344, and elastic telescopic rod 345 are also provided. Specifically, compared to the method of scraping material with a single push plate 343, the pair of push plates 343 arranged below the connecting plate 341, due to the certain gap between the pair of push plates 343, will not affect the other push plate 343 when material is jammed. Therefore, the elasticity of the elastic telescopic rod 345 can be fully utilized to improve the avoidance performance of the push plates 343 and avoid the situation where the push plates 343 are too long and difficult to avoid. As for the material leakage in the gap between the pair of push plates 343, the structural strength of the elastic plate 36 can be increased (to meet the strength required for scraping) to prevent material leakage in the gap; or secondary scraping can be performed after the transport vehicle 42 moves laterally.

[0034] In addition, a pair of parallel clamping strips 421 are provided on the top surface of the transport vehicle 42; the clamping strips 421 are arranged longitudinally; the working surface is the plane between the pair of clamping strips 421 on the same transport vehicle 42, and the plane between adjacent pairs of clamping strips 421 on adjacent transport vehicles 42; the push plate 343 can move longitudinally between a pair of adjacent clamping strips 421; the distance between a pair of elastic plates 36 is not greater than the transverse dimension of the clamping strips 421. The clamping strips are used to mate with the casting blank, therefore the inner sides of a pair of adjacent clamping strips need to be cleaned. In this embodiment, the adjacent transport vehicles 42 are tightly fitted, so that the push plate 343 can clean both the working surface between a pair of clamping strips 421 on the same transport vehicle 42 and the working surface between a pair of adjacent clamping strips 421 on adjacent transport vehicles 42. Furthermore, with a pair of push plates 343, both working surfaces can be cleaned simultaneously, significantly improving cleaning efficiency. Secondly, the spacing between a pair of elastic plates 36 is no greater than the transverse dimension of the clip 421, ensuring that when the push plate 343 is located inside a pair of adjacent clips 421, both ends of the elastic plates 36 can fully contact the side wall of the clip 421, preventing material leakage at the side wall of the clip 421 and improving cleaning quality and efficiency.

[0035] Optionally, a pressure sensor is provided between the adapter plate 342 and the push plate 343. Specifically, the pressure sensor between the adapter plate 342 and the push plate 343 is used to monitor the maximum compressive force between the adapter plate 342 and the push plate 343. When the value detected by the pressure sensor exceeds a preset threshold, the magnetic separation cleaning device alarms and the equipment stops operating to protect the equipment and prevent material from bumping and damaging the scraping mechanism 3.

[0036] Furthermore, the present invention also provides a method for cleaning waste sand chills. The method for cleaning waste sand chills is based on the above-mentioned magnetic separation cleaning device for casting waste sand chills, and the cleaning method includes: The materials on the work surface are cleaned in layers, including the top layer, the second layer and the bottom layer that are distributed vertically, that is, cleaning in layers from top to bottom. S1. The magnetic attraction mechanism 2 moves vertically to the height of the top layer, completes the first adsorption of cold iron on the working surface, and then resets; the scraping mechanism 3 moves longitudinally to the height of the top layer, completes the first scraping of the working surface, and then resets. S2, the magnetic attraction mechanism 2 moves vertically to the height of the second layer, completes the second adsorption of chilled iron on the working surface, and then resets; the scraping mechanism 3 moves longitudinally to the height of the second layer, completes the second scraping of the working surface, and then resets. Based on S1 and S2, the materials are cleaned layer by layer until the bottom layer is cleaned; the transfer mechanism 4 moves laterally to move the next transport vehicle 42 below the magnetic attraction mechanism 2.

[0037] In non-layered cleaning operations, the chills near the working surface are buried at a relatively deep depth, resulting in poor adsorption effect of the magnetic separator 22 on these chills. By using layered cleaning, on the one hand, the amount of chills separated from the material is increased, reducing the labor intensity of subsequent manual screening of the residue; on the other hand, when the chills of the corresponding layer height are adsorbed, the resistance of the material in that layer to the push plate 343 is reduced, the collision force is reduced, the scraping process is gentler, and the service life of the equipment is extended.

[0038] During layered cleaning, the top of a chill in the lower layer may protrude into the upper layer. When the push plate 343 scrapes material from the upper layer, it may struggle to push the protruding chill, potentially causing a collision between the push plate 343 and the chill, leading to equipment damage. This invention addresses this by designing a material-blocking avoidance module. When the push plate 343 collides with the chill, it can adjust the height of its bottom by swinging, thus avoiding the collision and effectively protecting the equipment.

[0039] It should be understood that the above description of specific embodiments of the present invention is only for illustrating the technical approach and features of the present invention, and is intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, the present invention is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of the present invention should be covered within the protection scope of the present invention.

Claims

1. A magnetic separation cleaning device for casting waste sand chills, characterized in that, The magnetic separation cleaning device for casting waste sand chills includes a support (1) and a magnetic attraction mechanism (2), a scraping mechanism (3) and a transfer mechanism (4) installed on the support (1). The bracket (1) is set on the outside of the working surface; the magnetic attraction mechanism (2) and the scraping mechanism (3) can both be raised and lowered vertically; the magnetic attraction mechanism (2) can attract cold iron on the working surface; the scraping mechanism (3) can move in the first direction in the horizontal plane to scrape off the waste sand on the working surface. The scraping mechanism (3) includes a scraper (34); the scraper (34) includes a connecting plate (341), a transition plate (342), a push plate (343), a hinge seat (344), and an elastic telescopic rod (345); the connecting plate (341) is perpendicularly connected to the transition plate (342); the push plate (343) is parallel to the transition plate (342); the connecting plate (341) is slidably connected to the bracket (1) in the first direction; the hinge seat (344) is provided on the end face of the transition plate (342); the hinge seat (344) is hinged to the first end face of the push plate (343); the elastic telescopic rod (345) is also provided between the first end face and the transition plate (342). The transfer mechanism (4) includes multiple transport vehicles (42) capable of moving laterally; the end face of the push plate (343) facing away from the adapter plate (342) is the second end face; elastic plates (36) are arranged parallel to each other on the second end face; a pair of push plates (343) are mirror-arranged below the connecting plate (341); a pair of parallel locking strips (421) are arranged on the top surface of the transport vehicle (42); the locking strips (421) are arranged longitudinally; the working surface is the plane between a pair of locking strips (421) on the same transport vehicle (42), and the plane between an adjacent pair of locking strips (421) on adjacent transport vehicles (42); the push plate (343) is capable of moving longitudinally between a pair of adjacent locking strips (421); the distance between a pair of elastic plates (36) is not greater than the transverse dimension of the locking strips (421); After the magnetic attraction mechanism (2) attracts the cold iron on the working surface, the push plate (343) of the scraping mechanism (3) scrapes off the remaining material on the working surface.

2. The magnetic separation cleaning device for casting waste sand chills according to claim 1, characterized in that, The transfer mechanism (4) also includes a transport track (41); multiple transport vehicles (42) are mounted on the transport track (41); The transport vehicle (42) moves laterally on the transport track (41); the magnetic attraction mechanism (2) is installed on the top of the support (1); the scraping mechanism (3) is installed on the crossbeam of the support (1); the first direction is longitudinal; the top surface of the transport vehicle (42) is the working surface.

3. The magnetic separation cleaning device for casting waste sand chills according to claim 2, characterized in that, The magnetic attraction mechanism (2) includes a mounting frame (21), a magnetic separator (22), a first lifting driver (23), and multiple first guide rods (24). The mounting bracket (21) is connected to the top surface of the crossbeam of the support (1); The first lifting driver (23) is mounted on the mounting frame (21); the magnetic separator (22) is mounted on the inner side of the mounting frame (21); the telescopic rod of the first lifting driver (23) is connected to the magnetic separator (22); The first guide rod (24) is slidably connected to the mounting frame (21) in a vertical direction; the top of the magnetic separator (22) is provided with multiple first guide rods (24).

4. The magnetic separation cleaning device for casting waste sand chills according to claim 2, characterized in that, The scraping mechanism (3) includes a telescopic driver (31), a second lifting driver (32), a sliding plate (33), a scraper (34), and a pair of sliding rods (35). The telescopic actuator (31) is mounted on the side wall of the crossbeam of the bracket (1); The second lifting driver (32) is mounted on the top surface of the slide plate (33), and the second lifting driver (32) is connected to the push rod of the telescopic driver (31); the output shaft of the second lifting driver (32) passes through the slide plate (33) and is connected to the scraper (34); the scraper (34) is mounted on the bottom surface of the slide plate (33); A pair of slide rods (35) are arranged parallel to each other on the inner side of the bracket (1); the two ends of the slide plate (33) are slidably connected longitudinally to the pair of slide rods (35) in a corresponding manner.

5. The magnetic separation cleaning device for casting waste sand chills according to claim 4, characterized in that, The connecting plate (341) is connected to the push rod of the second lifting driver (32).

6. The magnetic separation cleaning device for casting waste sand chills according to claim 5, characterized in that, A pressure sensor is provided between the adapter plate (342) and the push plate (343).

7. A method for cleaning waste sand chills, characterized in that, The method for cleaning waste sand chills is implemented based on the magnetic separation cleaning device for casting waste sand chills as described in any one of claims 1-6, and the cleaning method includes: The material on the work surface is cleaned in layers, including cleaning the top layer, the second layer and the bottom layer that are distributed vertically. S1. The magnetic attraction mechanism (2) moves vertically to the height of the uppermost layer, completes the first adsorption of cold iron on the working surface, and then resets; the scraping mechanism (3) moves longitudinally to the height of the uppermost layer, completes the first scraping of the working surface, and then resets. S2. The magnetic attraction mechanism (2) moves vertically to the height of the second layer, completes the second adsorption of cold iron on the working surface, and then resets; the scraping mechanism (3) moves longitudinally to the height of the second layer, completes the second scraping of the working surface, and then resets. Based on S1 and S2, continue until the cleaning of the lowest layer is completed.

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