A molding sand reuse system for V-process casting

Abstract

This invention relates to a molding sand reuse system for V-process casting, comprising a conveyor belt, above which, from top to bottom, are arranged a feeding hopper, a dispersing mechanism for breaking down and uniformly distributing the molding sand, and an electromagnetic adsorption mechanism for adsorbing iron filings within the molding sand. An adsorption assembly is movably connected to the inner cavity of the processing chamber. This invention relates to the field of molding sand reuse technology. This V-process molding sand reuse system, through the alternating left-right movement of three sets of electromagnetic adsorption plates and the coordination of lifting plates, can continuously adsorb iron filings from the molding sand while automatically separating them with good screening effect. It ensures large-scale separation while minimizing iron filings residue, eliminating the need for additional manual cleaning, simplifying maintenance, and thus significantly reducing iron filings residue in the molding sand, increasing the viscosity of the molding sand during the molding process, and reducing the difficulty of molding.

Description

Technical Field

[0001] This invention relates to the field of molding sand reuse technology, specifically a molding sand reuse treatment system for V-process casting. Background Technology

[0002] Sand casting involves pressing molding sand into a specific mold cavity, pouring liquid casting material into the mold cavity, and allowing it to cool and solidify to form a casting. The molding sand and casting are then separated. The molded sand can be recycled and reused, reducing production costs and improving resource utilization efficiency while reducing resource extraction. Water washing is used to quickly separate the molding sand from the casting. When recycling the molding sand, the water needs to be drained, the sand needs to be dried, broken into pieces, and iron slag needs to be removed.

[0003] According to the precision casting molding sand automatic cleaning and recycling device described in patent number CN116197352A, the structure for adsorbing iron slag from the molding sand is too complicated and requires a large number of transmission structures, resulting in low processing efficiency and high energy consumption. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a molding sand reuse system for V-process casting, which solves the problems mentioned above.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a molding sand reuse treatment system for V-process casting, comprising a conveyor belt, wherein a feeding hopper, a dispersing mechanism for breaking up and uniformly distributing the molding sand, and an electromagnetic adsorption mechanism for adsorbing iron filings inside the molding sand are arranged sequentially from top to bottom above the conveyor belt.

[0006] The electromagnetic adsorption mechanism includes a processing box that runs vertically through the conveyor belt. An adsorption assembly is movably connected to the inner cavity of the processing box. The adsorption assembly includes three electromagnetic adsorption plates connected by insulating strips. The electromagnetic adsorption plates are connected to an external power supply for switching on and off. The surface of the electromagnetic adsorption plates has a grid-like screen to screen molding sand, and during screening, iron filings are left above the electromagnetic adsorption plates for separation. A guide rail is fixedly connected to the inner cavity of the processing box. A slider, driven by a drive mechanism, is fixedly connected to the side of the electromagnetic adsorption plates and slides on the surface of the guide rail. Two vertically lifting mechanisms are driven by a drive cylinder within the inner cavity of the processing box. The lifting plates located on both sides below the material inlet of the dispersing mechanism have cleaning brushes at their bottom that are adapted to the surface of the electromagnetic adsorption plate. There are two lifting plates, and when the electromagnetic adsorption plate is in its initial position, the two lifting plates divide it into three equal parts. Both sides of the processing box are equipped with receiving hoppers that slide along the sides of the processing box via a power assembly. During use, the molding sand dispersed by the dispersing mechanism falls onto the electromagnetic adsorption plate between the two lifting plates. At this time, the middle electromagnetic adsorption plate is energized. Then, the drive wheels on both sides rotate, causing the slider to move on the guide rail, which in turn causes the electromagnetic adsorption plate to move back and forth, thus moving the electromagnetic adsorption plate... The machine oscillates back and forth, shaking the molding sand from the mesh screen to the conveyor belt below. Iron filings are then attracted to the electromagnetic adsorption plates. At this point, one side of the lifting plate rises, and the electromagnetic adsorption plates continue to move without stopping, driving the plates that haven't attracted iron filings to below the two lifting plates. The lifting plates then lower to block the sides. The electromagnetic adsorption plates that have attracted iron filings continue to oscillate, thoroughly shaking the molding sand from the inside onto the conveyor belt below. The receiving hopper then moves to below the electromagnetic adsorption plates. When the middle section of the electromagnetic adsorption plate needs replacing due to iron filings, the lifting plate of the other side of the electromagnetic adsorption plate that hasn't attracted iron filings is raised, and the electric... The magnetic adsorption plate moves to the other side, at which point the electromagnetic adsorption plate with iron filings adsorbed on its edge is de-energized. The iron filings then fall into the receiving hopper below for separation. After being cleaned by the cleaning brush under the lifting plate, it moves to the dispersing mechanism for adsorption again. Through the alternating left and right movement of the three sets of electromagnetic adsorption plates, and with the cooperation of the lifting plate, iron filings can be adsorbed continuously in the molding sand while being automatically separated. The screening effect is good, ensuring large-scale separation while minimizing iron filings residue. No additional manual cleaning is required, and maintenance is simple. This greatly reduces the residue of iron filings in the molding sand, increases the viscosity of the molding sand during the molding process, and reduces the difficulty of molding.

[0007] As a further aspect of the present invention: the electromagnetic adsorption plate is in a multi-segment V-shaped bend, which can increase the contact area between the molding sand and facilitate the adsorption of iron filings by the rolling molding sand.

[0008] As a further aspect of the present invention: the driving mechanism includes a drive wheel rotatably mounted in the inner cavity of the processing box and driven by a motor. The surface of the drive wheel is connected to a pull rope fixedly connected to the surface of the slider. There are four drive wheels, which are distributed in pairs on both sides of the two sliders. By rotating the drive wheels on both sides, the sliders are driven to move on the guide track, thereby driving the electromagnetic adsorption plate to move back and forth.

[0009] As a further aspect of the present invention: the dispersion mechanism includes a fixed frame disposed between the hopper and the processing box, a dispersion frame slidably connected to the inner cavity of the fixed frame, a dispersion metal grid fixed in the inner cavity of the dispersion frame, and a cam rotatably connected to the inner cavity of the fixed frame and driven by a motor to contact the bottom of the dispersion frame. The cam drives the dispersion frame to move up and down, and the molding sand is dispersed by the dispersion metal grid and then transported into the processing box for pretreatment to facilitate subsequent adsorption treatment.

[0010] As a further aspect of the present invention: baffles are provided on both sides of the top of the conveyor belt to prevent molding sand from leaking from both sides.

[0011] As a further aspect of the present invention: the two lifting plates are respectively located directly above the two baffles, the width of the electromagnetic adsorption plate is the same as the width of the conveyor belt, and the reciprocating switching operation of the three electromagnetic adsorption plates ensures continuous feeding and conveying of materials onto the conveyor belt.

[0012] As a further aspect of the present invention: the end of the cleaning brush abuts against the top of the insulating strip, the upper half of the cleaning brush is made of hard, high-density bristles that come into contact with the insulating strip for sealing, and the lower end can extend to below the mesh screen holes for effective cleaning when in contact with the electromagnetic adsorption plate.

[0013] As a further aspect of the present invention: the bottom of the cleaning brush is provided with a concave-convex surface adapted to the multi-segment V-shaped bending state of the electromagnetic adsorption plate.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. This invention, through the alternating left and right movement of three sets of electromagnetic adsorption plates and the cooperation of lifting plates, can continuously adsorb iron filings in molding sand while automatically separating them with good screening effect. It can ensure large-scale separation while minimizing iron filings residue, eliminating the need for additional manual cleaning and simplifying maintenance. This greatly reduces the residue of iron filings in molding sand, increases the viscosity of molding sand during the molding process, and reduces the difficulty of molding.

[0016] 2. In this invention, the dispersing frame is driven to move up and down by a cam, and the molding sand is dispersed by the dispersing metal grid and then transported into the processing box for pretreatment to facilitate subsequent adsorption treatment.

[0017] 3. In this invention, the upper half of the cleaning brush is sealed by contacting the insulating strip with hard, high-density bristles, and the lower end can extend to below the mesh screen holes for effective cleaning when in contact with the electromagnetic adsorption plate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a top view of the processing box of the present invention;

[0020] Figure 3 For the present invention Figure 1 A magnified view of a section at point A in the middle;

[0021] Figure 4 This is a top view of the adsorption component of the present invention;

[0022] Figure 5 This is a top view of the structure of the dispersion frame of the present invention.

[0023] In the diagram: 1. Conveyor belt; 2. Baffle; 3. Drop hopper; 4. Fixed frame; 5. Dispersing frame; 6. Processing box; 7. Receiving hopper; 8. Guide rail; 9. Slider; 10. Adsorption assembly; 11. Electromagnetic adsorption plate; 12. Insulating strip; 13. Mesh screen; 14. Drive wheel; 15. Pull rope; 16. Lifting plate; 17. Cleaning brush; 18. Dispersing metal grid; 19. Cam. Detailed Implementation

[0024] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0025] Please see Figure 1-5 The present invention provides a technical solution: a molding sand reuse treatment system for V-process casting, including a conveyor belt 1, and a feeding hopper 3, a dispersing mechanism for breaking up and uniformly distributing molding sand, and an electromagnetic adsorption mechanism for adsorbing iron filings inside the molding sand, arranged sequentially from top to bottom above the conveyor belt 1.

[0026] The electromagnetic adsorption mechanism includes a processing box 6 that runs vertically through the conveyor belt 1. An adsorption assembly 10 is movably connected to the inner cavity of the processing box 6. The adsorption assembly 10 includes three sections of electromagnetic adsorption plates 11 connected by an insulating strip 12. The electromagnetic adsorption plates 11 are connected to an external power supply for switching on and off. The surface of the electromagnetic adsorption plates 11 has mesh-like sieve holes 13 for screening molding sand, and during screening, iron filings can be separated by leaving them above the electromagnetic adsorption plates 11. A guide rail 8 is fixedly connected to the inner cavity of the processing box 6. A slider 9, driven by a drive mechanism, is fixedly connected to the side of the electromagnetic adsorption plates 11 and slides on the surface of the guide rail 8. Two vertically lifting and dispersing mechanisms are driven by a drive cylinder within the inner cavity of the processing box 6. The lifting plates 16 on both sides below the material inlet have cleaning brushes 17 at their bottom that are adapted to the surface of the electromagnetic adsorption plate 11. There are two lifting plates 16. When the electromagnetic adsorption plate 11 is in its initial position, the two lifting plates 16 divide the electromagnetic adsorption plate 11 into three equal parts. Both sides of the processing box 6 are equipped with receiving hoppers 7 that slide on both sides of the processing box 6 via a power component. During use, the molding sand dispersed by the dispersion mechanism falls onto the electromagnetic adsorption plate 11 between the two lifting plates 16. At this time, the middle electromagnetic adsorption plate 11 is energized. Then, the two drive wheels 14 rotate, driving the slider 9 to move on the guide rail 8, causing the electromagnetic adsorption plate 11 to move back and forth. After shaking, the molding sand above is shaken off through the mesh screen 13 and conveyed to the lower conveyor belt 1. Then, the iron filings are attracted to the electromagnetic adsorption plate 11. At this time, one of the lifting plates 16 is raised. Then, without stopping the machine, the electromagnetic adsorption plate 11 continues to move, driving the electromagnetic adsorption plate 11 without adsorbing iron filings to below the two lifting plates 16. Then, the lifting plates 16 are lowered to block the sides. At this time, the electromagnetic adsorption plate 11 with iron filings continues to shake, and the molding sand inside is completely shaken off to the lower conveyor belt 1. Then, the receiving hopper 7 is moved to below the electromagnetic adsorption plate 11. Then, when the middle section of the electromagnetic adsorption plate 11 needs to be replaced with iron filings, the lifting plate 16 of the electromagnetic adsorption plate 11 on the other side without iron filings is raised. 6. Then, the electromagnetic adsorption plate 11 is moved to the other side. At this time, the electromagnetic adsorption plate 11 with iron filings adsorbed on the edge is de-energized, and the iron filings fall into the receiving hopper 7 below for separation. After being cleaned by the cleaning brush 17 below the lifting plate 16, it moves to the bottom of the dispersing mechanism for adsorption again. Through the alternating left and right movement of the three sets of electromagnetic adsorption plates 11 and the cooperation of the lifting plate 16, the iron filings of the molding sand can be adsorbed continuously while being automatically separated. The screening effect is good. While ensuring large-scale separation, the residue of iron filings is minimized. No additional manual cleaning is required, and maintenance is simple. This greatly reduces the residue of iron filings in the molding sand, increases the viscosity of the molding sand in the molding process, and reduces the difficulty of molding.

[0027] The electromagnetic adsorption plate 11 has a multi-segment V-shaped bend, which can increase the contact area between the molding sand and the molding sand, and facilitate the adsorption of iron filings by the rolling molding sand.

[0028] The drive mechanism includes a drive wheel 14 rotatably mounted inside the processing box 6 and driven by a motor. The surface of the drive wheel 14 is connected to a pull rope 15 fixedly connected to the surface of the slider 9. There are four drive wheels 14, which are distributed in pairs on both sides of the two sliders 9. By rotating the drive wheels 14 on both sides, the sliders 9 are driven to move on the guide rail 8, which in turn drives the electromagnetic adsorption plate 11 to move back and forth.

[0029] The dispersion mechanism includes a fixed frame 4 disposed between the hopper 3 and the processing box 6. A dispersion frame 5 is slidably connected to the inner cavity of the fixed frame 4. A dispersion metal grid 18 is fixed in the inner cavity of the dispersion frame 5. A cam 19 driven by a motor and in contact with the bottom of the dispersion frame 5 is rotatably connected to the inner cavity of the fixed frame 4. The cam 19 drives the dispersion frame 5 to move up and down. The dispersion metal grid 18 disperses the molding sand and then transports it into the processing box 6 for pretreatment to facilitate subsequent adsorption treatment.

[0030] Baffles 2 are installed on both sides of the top of the conveyor belt 1 to prevent molding sand from leaking from both sides.

[0031] Two lifting plates 16 are located directly above the two baffles 2. The width of the electromagnetic adsorption plate 11 is the same as the width of the conveyor belt 1. The reciprocating switching operation of the three electromagnetic adsorption plates 11 ensures continuous feeding and conveying of materials onto the conveyor belt 1.

[0032] The end of the cleaning brush 17 abuts against the top of the insulating strip 12. The upper half of the cleaning brush 17 is made of hard, high-density bristles that come into contact with the insulating strip 12 for sealing. When the lower end contacts the electromagnetic adsorption plate 11, it can extend to the bottom of the mesh screen 13 for effective cleaning.

[0033] The bottom of the cleaning brush 17 is provided with concave and convex surfaces that are adapted to the multi-segment V-shaped bending state of the electromagnetic adsorption plate 11.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A molding sand reuse system for V-process casting, comprising a conveyor belt (1), characterized in that: The conveyor belt (1) is provided with a feeding hopper (3), a dispersing mechanism for breaking up the molding sand so that it is evenly distributed, and an electromagnetic adsorption mechanism for adsorbing iron filings inside the molding sand in sequence from top to bottom. The electromagnetic adsorption mechanism includes a processing box (6) arranged vertically above the conveyor belt (1). An adsorption assembly (10) is movably connected to the inner cavity of the processing box (6). The adsorption assembly (10) includes three sections of electromagnetic adsorption plates (11) connected by an insulating strip (12). The electromagnetic adsorption plates (11) are connected to an external power supply mechanism for switching on and off. A grid-like sieve hole (13) is opened on the surface of the electromagnetic adsorption plates (11) to screen molding sand. A guide rail (8) is fixedly connected to the inner cavity of the processing box (6). A sliding mechanism is fixedly connected to the side of the electromagnetic adsorption plates (11) and slides on the surface of the guide rail (8). The slider (9) driven by the drive mechanism, the inner cavity of the processing box (6) is driven by the drive cylinder to have two lifting plates (16) that are lifted up and down and located on both sides below the material discharge port of the dispersing mechanism. The bottom of the lifting plate (16) is provided with a cleaning brush (17) that is adapted to the surface of the electromagnetic adsorption plate (11). When the electromagnetic adsorption plate (11) is in the initial position, the two lifting plates (16) divide the electromagnetic adsorption plate (11) into three equal parts. Both sides of the processing box (6) are provided with receiving hoppers (7) that are slidably arranged on both sides of the processing box (6) by the drive component. The electromagnetic adsorption plate (11) is in a multi-segment V-shaped bending state.

2. The V-process casting molding sand reuse system according to claim 1, characterized in that: The driving mechanism includes a drive wheel (14) rotatably mounted in the inner cavity of the processing box (6) and driven by a motor. The surface of the drive wheel (14) is connected to a pull rope (15) fixedly connected to the surface of the slider (9). There are four drive wheels (14), which are distributed in pairs on both sides of the two sliders (9).

3. The molding sand reuse system for V-process casting according to claim 1, characterized in that: The dispersing mechanism includes a fixed frame (4) disposed between the hopper (3) and the processing box (6). The inner cavity of the fixed frame (4) is slidably connected to a dispersing frame (5). The inner cavity of the dispersing frame (5) is fixed with a dispersing metal grid (18). The inner cavity of the fixed frame (4) is rotatably connected to a cam (19) that is driven by a motor and contacts the bottom of the dispersing frame (5).

4. The molding sand reuse system for V-process casting according to claim 1, characterized in that: Baffles (2) are provided on both sides of the top of the conveyor belt (1).

5. The molding sand reuse system for V-process casting according to claim 4, characterized in that: The two lifting plates (16) are located directly above the two baffles (2), and the width of the electromagnetic adsorption plate (11) is the same as the width of the conveyor belt (1).

6. The molding sand reuse system for V-process casting according to claim 1, characterized in that: The end of the cleaning brush (17) abuts against the top of the insulating strip (12).

7. The molding sand reuse system for V-process casting according to claim 1, characterized in that: The bottom of the cleaning brush (17) is provided with a concave-convex surface that is adapted to the multi-segment V-shaped bending state of the electromagnetic adsorption plate (11).

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