A modified melamine foam tailings recovery device

Abstract

This invention provides a waste recycling device for modified melamine foam, including a placement platform with an opening at the top. A heating frame is installed inside the opening, with the top of the heating frame higher than the top of the placement platform. The heating frame is detachably and fixedly connected to the placement platform. This invention utilizes a pressure plate to apply downward pressure to the foam board, causing it to be cut through the heating frame. The cut foam board falls through the opening to the bottom of the placement platform. The cut scraps are located at the top of a telescopic frame. A pusher plate pushes the scraps from the top of the telescopic frame out. An upper conveyor and a lower conveyor work simultaneously to receive and transport these scraps. During transport, the scraps pass through several heating meshes, cutting them into several small pieces. A collection box collects these small pieces of scrap.

Description

Technical Field

[0001] This invention relates to a device, specifically a device for recycling waste materials from modified melamine foam, belonging to the field of waste material recycling technology for foam plastics. Background Technology

[0002] Modified melamine foam is a special type of foam plastic made by mixing melamine resin with modifiers. It possesses properties such as lightweight, heat insulation, sound absorption, pressure resistance, and flame retardancy. The modification process typically involves adding modifiers to the raw materials to improve their physical and processing properties. Modified melamine foam is widely used in construction, transportation, packaging, and other fields.

[0003] The production of modified melamine foam generates some waste materials. These waste materials can be recycled and reused, allowing them to be reprocessed into new products or raw materials. This recycling helps reduce production costs, decreases the demand for raw materials, and also reduces waste emissions, making it more environmentally friendly.

[0004] However, due to the possibility of excessively large or broken waste materials during the production of modified melamine foam, it is difficult to collect the waste materials in a concentrated manner. Summary of the Invention

[0005] Based on the above background, the purpose of this invention is to provide a modified melamine foam waste recycling device that can cut large-volume waste materials and facilitate centralized collection of waste materials, thereby solving the problems described in the background art.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0007] A waste recycling device for modified melamine foam plastics, comprising:

[0008] A placement platform has an opening at its top, and a heating frame is installed inside the opening. The top of the heating frame is higher than the top of the placement platform. The heating frame is detachably and fixedly connected to the placement platform. A telescopic frame is installed at the top of the placement platform and is located outside the opening. Several elastic elements are installed at the bottom of the telescopic frame. The two ends of the elastic elements are fixedly connected to the telescopic frame and the placement platform, respectively. The telescopic frame has two states: higher than the top of the heating frame and lower than the top of the heating frame.

[0009] A first frame is placed on top of a placement platform. A pressure plate is provided between the first frame and the placement platform. A first hydraulic cylinder is provided between the pressure plate and the first frame. The first hydraulic cylinder is fixedly connected to the first frame, and the output end of the first hydraulic cylinder is fixedly connected to the pressure plate.

[0010] The second frame is placed on one side of the placement table. A push plate is provided between the second frame and the placement table. A second hydraulic cylinder is provided between the push plate and the second frame. The second hydraulic cylinder is fixedly connected to the second frame. The output end of the second hydraulic cylinder is fixedly connected to the push plate. The push plate is slidably engaged with the top of the placement table.

[0011] The third frame is placed on the side of the placement platform away from the second frame. The third frame is connected to the placement platform. An upper conveying device and a lower conveying device are respectively arranged from top to bottom on the top of the third frame. Both the upper and lower conveying devices are connected to the third frame. A plurality of heating nets are arranged between the upper and lower conveying devices. The plurality of heating nets are linearly arranged at equal distances between the upper and lower conveying devices. The heating nets are detachably and fixedly connected to the third frame.

[0012] A collection box is placed on the side of the third frame away from the placement platform, and the collection box is detachably and fixedly connected to the third frame.

[0013] The telescopic frame at the top of the placement table provides a place for the foam plastic boards to be cut. The heating frame inside the opening can be used to melt and cut the foam plastic boards, and its shape is the size and shape of the foam plastic boards to be cut. When the elastic element is in a free state, it can lift the telescopic frame, and the height of the telescopic frame will be higher than the top height of the heating frame, so that the telescopic frame is away from the heating frame, making it easier for the operator to place the foam plastic boards to be cut on the telescopic frame. When the elastic element is in a compressed state, the foam plastic boards at the top of the telescopic frame will pass through the heating frame one by one and be cut. The cut foam plastic boards will then fall down to the bottom of the placement table through the opening, while the scraps of the cut foam plastic boards will still be on the top of the telescopic frame.

[0014] The first frame can fix the first hydraulic cylinder. The output end of the first hydraulic cylinder can drive the pressure plate downward to provide pressure to the foam plastic board at the top of the telescopic frame, so that the foam plastic board can pass smoothly through the heating frame for cutting.

[0015] The second frame can fix the second hydraulic cylinder. The output end of the second hydraulic cylinder can drive the push plate to provide thrust to the scrap material left by the cutting of the foam plastic board at the top of the telescopic frame, and push it out of the top of the telescopic frame.

[0016] The third frame can fix the upper conveying device, the lower conveying device, and several heating nets. The upper and lower conveying devices work together to receive the foam plastic board scraps pushed out of the top of the telescopic frame by the push plate, and convey the foam plastic board scraps. During the conveying process, the foam plastic board scraps pass through several heating nets, which cut them into several small pieces, making them easy to collect.

[0017] The collection box can receive and collect small pieces of foam board scraps that have left the third rack.

[0018] Preferably, the upper conveying device includes several upper rotating rollers, an upper conveyor belt, and an upper rotary motor. The two ends of the several upper rotating rollers are fixedly connected to a third frame. An upper conveyor belt is sleeved on the outside of the several upper rotating rollers. The upper conveyor belt rotates and engages with the outside of the several upper rotating rollers. Several upper grooves are formed on the surface of the upper conveyor belt away from the upper rotating rollers. The output end of the upper rotary motor is detachably and fixedly connected to one of the upper rotating rollers. The upper rotary motor is fixedly connected to the third frame.

[0019] The upper rotating motor provides power, enabling the upper rotating roller and upper conveyor belt to operate smoothly. The grooves on the upper conveyor belt help stabilize the position of the foam plastic board during the conveying process, preventing it from sliding or falling, and also play a certain role in propelling it.

[0020] Preferably, the lower conveying device includes a plurality of lower rotating rollers, a lower conveyor belt, and a lower rotary motor. The two ends of the plurality of lower rotating rollers are fixedly connected to a third frame. The lower conveyor belt is sleeved on the outside of the plurality of lower rotating rollers and rotates around the plurality of lower rotating rollers. The lower conveyor belt has a plurality of lower grooves on the surface of the side of the lower conveyor belt away from the lower rotating rollers. The output end of the lower rotary motor is detachably and fixedly connected to one of the lower rotating rollers. The lower rotary motor is fixedly connected to the third frame.

[0021] The lower rotary motor provides power, enabling the lower roller and lower conveyor belt to operate smoothly. The grooves on the lower conveyor belt help stabilize the position of the foam plastic board during the conveying process, preventing it from sliding or falling, and also play a certain role in propelling it.

[0022] Preferably, the third frame is provided with electrostatic adsorption plates on both sides along the direction from the placement platform to the collection box, and the electrostatic adsorption plates are detachably connected to the third frame.

[0023] Electrostatic adsorption plates can use electrostatic attraction to attract broken foam plastic fragments during the conveying process, preventing the foam plastic fragments from flying around the workshop and improving the safety and cleanliness of the workshop.

[0024] Preferably, both the upper and lower conveyor belt surfaces are coated with a heat-insulating and fire-retardant coating.

[0025] Applying a heat-insulating and fire-retardant coating can prevent heat from being transferred to other parts of the equipment via the upper and lower conveyor belts, causing thermal damage, and can control the spread of fire if necessary.

[0026] Preferably, two fans are provided between the upper rotary motor and the lower rotary motor, with the two fans respectively located below the upper rotary motor and above the lower rotary motor, and both fans are fixedly connected to the third frame.

[0027] The arrangement of these two fans can effectively protect the normal operation of the upper and lower rotating motors, prevent overheating problems, and improve their lifespan and performance.

[0028] Preferably, the third frame is provided with a first magnet, which is fixedly connected to the third frame, and the collection box is provided with a second magnet, which is fixedly connected to the collection box. The third frame and the collection box are magnetically connected through the first magnet and the second magnet.

[0029] The magnetic connection between the first and second magnets facilitates disassembly and installation, making it easy to assemble and disassemble the collection box from the third frame.

[0030] Preferably, the top of the collection box is provided with a cover that has an opening and closing function relative to the collection box, the cover is hinged to the collection box, and the bottom of the collection box is provided with a plurality of wheels, the wheels being hinged to the collection box.

[0031] The lid opens, and the collection box collects the scraps of foam plastic board. After collection, the collection box containing the scraps is transferred to the next process. During the transfer, the lid remains closed to prevent the scraps from spilling out of the collection box. Wheels allow the collection box to slide and turn, facilitating the transfer of the collected foam plastic board scraps.

[0032] Compared with the prior art, the present invention has the following advantages:

[0033] This invention discloses a modified melamine foam waste recycling device. A telescopic frame at the top of a placement platform provides a place for the foam boards to be cut. A heating frame inside the opening melts and cuts the foam boards to the required size and shape. When the elastic element is in a free state, it can lift the telescopic frame, making its height higher than the top of the heating frame, thus moving the telescopic frame away from the heating frame and facilitating the operator to place the foam boards to be cut on it. When the elastic element is compressed, the foam boards at the top of the telescopic frame pass through the heating frame one by one and are cut. The cut foam boards then fall through the opening to the bottom of the placement platform, while the scraps from the cut foam boards remain on the top of the telescopic frame. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the overall structure of the tailings recycling device for modified melamine foam plastic of the present invention.

[0036] Figure 2 This is a top view of the placement platform of the tailings recycling device for the modified melamine foam plastic of the present invention.

[0037] Figure 3 yes Figure 1 A magnified structural diagram of part A in the middle.

[0038] In the diagram: 1. Placement platform; 2. Opening; 3. Heating frame; 4. Telescopic frame; 5. Elastic element; 6. First frame; 7. Pressure plate; 8. First hydraulic cylinder; 9. Second frame; 10. Push plate; 11. Second hydraulic cylinder; 12. Third frame; 1301. Upper roller; 1302. Upper conveyor belt; 1303. Upper rotary motor; 1401. Lower roller; 1402. Lower conveyor belt; 1403. Lower rotary motor; 15. Heating mesh; 16. Collection box; 17. Electrostatic adsorption plate; 18. Fan; 19. Cover; 20. Wheel. Detailed Implementation

[0039] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of the present invention is not limited to the following embodiments, and any modifications and / or alterations made to the present invention will fall within the protection scope of the present invention.

[0040] In this invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used are commercially available or commonly used in the art. Unless otherwise specified, the methods in the following embodiments are conventional methods in the art. Unless otherwise specified, the components or equipment in the following embodiments are general standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0041] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In this detailed description, numerous specific details are set forth to facilitate explanation and provide a thorough understanding of the embodiments of the present invention. However, one or more embodiments may be practiced by those skilled in the art without these specific details.

[0042] like Figure 1 and Figure 2 As shown, a waste recycling device for modified melamine foam includes:

[0043] A placement platform 1 has an opening 2 at its top, and a heating frame 3 is installed inside the opening 2. The top of the heating frame 3 is higher than the top of the placement platform 1, and the heating frame 3 is detachably and fixedly connected to the placement platform 1. Figure 3 As shown, a telescopic frame 4 is provided on the top of the placement platform 1, and the telescopic frame 4 is located outside the opening 2. Several elastic elements 5 are provided at the bottom of the telescopic frame 4. The two ends of the elastic elements 5 are fixedly connected to the telescopic frame 4 and the placement platform 1 respectively. The telescopic frame 4 has two states: higher than the top of the heating frame 3 and lower than the top of the heating frame 3.

[0044] The telescopic frame 4 at the top of the placement table 1 provides a place for the foam plastic board to be cut. The heating frame 3 set in the opening 2 can be used to heat and melt and cut the foam plastic board, and its shape is the size and shape of the foam plastic board to be cut. When the elastic element 5 is in a free state, the elastic element 5 can lift the telescopic frame 4, and the height of the telescopic frame 4 will be higher than the top height of the heating frame 3, so that the telescopic frame 4 is away from the heating frame 3, making it easier for the operator to place the foam plastic board to be cut on the telescopic frame 4. When the elastic element 5 is in a compressed state, the foam plastic boards at the top of the telescopic frame 4 will pass through the heating frame 3 one by one and be cut. The cut foam plastic boards will then fall from the opening 2 to the bottom of the placement table 1, while the scraps cut off from the foam plastic boards will still be on the top of the telescopic frame 4.

[0045] A first frame 6 is placed on top of the placement platform 1. A pressure plate 7 is provided between the first frame 6 and the placement platform 1. A first hydraulic cylinder 8 is provided between the pressure plate 7 and the first frame 6. The first hydraulic cylinder 8 is fixedly connected to the first frame 6, and its output end is fixedly connected to the pressure plate 7. A second frame 9 is placed on one side of the placement platform 1. A push plate 10 is provided between the second frame 9 and the placement platform 1. A second hydraulic cylinder 11 is provided between the push plate 10 and the second frame 9. The second hydraulic cylinder 11 is fixedly connected to the second frame 9, and its output end is fixedly connected to the push plate 10. The push plate 10 slides against the top of the placement platform 1. The third frame 12 is placed on the side of the placement platform 1 away from the second frame 9. The third frame 12 is connected to the placement platform 1. The top of the third frame 12 is provided with an upper conveying device and a lower conveying device from top to bottom. Both the upper and lower conveying devices are connected to the third frame 12. Several heating nets 15 are arranged between the upper and lower conveying devices. The heating nets 15 are arranged linearly at equal distances between the upper and lower conveying devices. The heating nets 15 are detachably and fixedly connected to the third frame 12.

[0046] The first frame 6 can fix the first hydraulic cylinder 8. The output end of the first hydraulic cylinder 8 can drive the pressure plate 7 downward to provide pressure to the foam plastic board at the top of the telescopic frame 4, so that the foam plastic board can pass smoothly through the heating frame 3 for cutting. The second frame 9 can fix the second hydraulic cylinder 11. The output end of the second hydraulic cylinder 11 can drive the push plate 10 to provide pushing force to the scrap left by the cutting of the foam plastic board at the top of the telescopic frame 4, pushing it out of the top of the telescopic frame 4. The third frame 12 can fix the upper conveying device, the lower conveying device and several heating nets 15. The upper conveying device and the lower conveying device work together to receive the scrap of foam plastic board pushed out of the top of the telescopic frame 4 by the push plate 10, and convey the scrap of foam plastic board. During the conveying process, the scrap of foam plastic board passes through several heating nets 15, and the heating nets 15 cut it, cutting the scrap of foam plastic board into several small pieces, which are easy to collect.

[0047] The upper conveying device includes several upper rotating rollers 1301, an upper conveyor belt 1302, and an upper rotary motor 1303. The two ends of the upper rotating rollers 1301 are fixedly connected to the third frame 12. The upper conveyor belt 1302 is fitted around the upper rotating rollers 1301, rotating in coordination with them. Several upper grooves are formed on the surface of the upper conveyor belt 1302 facing away from the upper rotating rollers 1301. The output end of the upper rotary motor 1303 is detachably and fixedly connected to one of the upper rotating rollers 1301. The upper rotary motor 1303 is fixedly connected to the third frame 12. The upper rotary motor 1303 provides power, enabling the upper rotating rollers 1301 and the upper conveyor belt 1302 to operate smoothly. The grooves on the upper conveyor belt 1302 help stabilize the position of the foam plastic board during conveying, preventing it from slipping or falling, and also provide a certain degree of propulsion.

[0048] The lower conveying device includes several lower rotating rollers 1401, a lower conveyor belt 1402, and a lower rotary motor 1403. The two ends of the lower rotating rollers 1401 are fixedly connected to the third frame 12. The lower conveyor belt 1402 is fitted around the lower rotating rollers 1401, rotating in coordination with them. Several grooves are formed on the surface of the lower conveyor belt 1402 facing away from the lower rotating rollers 1401. The output end of the lower rotary motor 1403 is detachably and fixedly connected to one of the lower rotating rollers 1401. The lower rotary motor 1403 is fixedly connected to the third frame 12. The lower rotary motor 1403 provides power, enabling the lower rotating rollers 1401 and the lower conveyor belt 1402 to operate smoothly. The grooves in the lower conveyor belt 1402 help stabilize the position of the foam plastic board during conveying, preventing it from slipping or falling, and also provide a certain degree of propulsion.

[0049] Both the upper conveyor belt 1302 and the lower conveyor belt 1402 are coated with a heat-insulating and fire-retardant coating. This coating prevents heat from being transferred through the upper conveyor belt 1302 and the lower conveyor belt 1402 to other parts of the equipment, thus preventing thermal damage, and also controls the spread of fire if necessary.

[0050] Two fans 18 are installed between the upper rotary motor 1303 and the lower rotary motor 1403. The two fans 18 are respectively located at the lower part of the upper rotary motor 1303 and the upper part of the lower rotary motor 1403, and both fans 18 are fixedly connected to the third frame 12. The installation of these two fans 18 can effectively protect the normal operation of the upper rotary motor 1303 and the lower rotary motor 1403, prevent overheating problems, and improve their lifespan and performance.

[0051] The third frame 12 is equipped with electrostatic adsorption plates 17 on both sides along the direction from the placement platform 1 to the collection box 16. The electrostatic adsorption plates 17 are detachably connected to the third frame 12. The electrostatic adsorption plates 17 can use electrostatic action to adsorb broken foam plastic fragments during the conveying process, preventing the foam plastic fragments from flying in the workshop and improving the safety and cleanliness of the workshop.

[0052] Collection box 16 is placed on the side of the third frame 12 away from the placement table 1, and is detachably and fixedly connected to the third frame 12. Collection box 16 can receive and collect small pieces of foam board scraps that leave the third frame 12.

[0053] The third frame 12 is equipped with a first magnet, which is fixedly connected to the third frame 12. The collection box 16 is equipped with a second magnet, which is fixedly connected to the collection box 16. The third frame 12 and the collection box 16 are magnetically connected through the first and second magnets. The magnetic connection between the first and second magnets facilitates disassembly and installation, making it easy to assemble and disassemble the collection box 16 from the third frame 12.

[0054] The collection box 16 has a cover 19 on its top, which is hinged to the collection box 16 and has opening and closing functions. Several wheels 20 are mounted on the bottom of the collection box 16 and are also hinged to it. When the cover 19 is opened, the collection box 16 collects the scraps of foam plastic board. After collection, the collection box 16 is transferred to the next process. During the transfer, the cover 19 remains closed to prevent the scraps of foam plastic board from spilling out of the collection box 16. The wheels 20 allow the collection box 16 to slide and turn, facilitating the transfer of the collected scraps of foam plastic board.

[0055] The operating steps of the modified melamine foam waste recycling device of the present invention are as follows:

[0056] Place the foam plastic board to be cut on top of the telescopic frame 4, start the first hydraulic cylinder 8, the output end of the first hydraulic cylinder 8 drives the pressure plate 7 to apply pressure to the foam plastic board on top of the telescopic frame 4. At this time, the elastic element 5 at the bottom of the telescopic frame 4 is in a compressed state. The foam plastic boards on top of the telescopic frame 4 will pass through the heating frame 3 one by one and be cut. The cut foam plastic boards will fall down from the opening 2 to the bottom of the placement table 1, while the scraps cut off from the foam plastic boards will still be on the top of the telescopic frame 4.

[0057] The second hydraulic cylinder 11 is activated. The output end of the second hydraulic cylinder 11 drives the push plate 10 to provide thrust to the scrap material left by the cutting of the foam plastic board at the top of the telescopic frame 4, pushing it out of the top of the telescopic frame 4.

[0058] Then, the upper rotary motor 1303 and the lower rotary motor 1403 are restarted. The upper rotary motor 1303 and the lower rotary motor 1403 work simultaneously to rotate the upper conveyor belt 1302 and the lower conveyor belt 1402 along the upper roller 1301 and the lower roller 1401 respectively. This causes the foam plastic board scraps pushed out of the top of the telescopic frame 4 by the push plate 10 between the upper conveyor belt 1302 and the lower conveyor belt 1402, and conveys the foam plastic board scraps. During the conveying process, the foam plastic board scraps pass through several heating meshes 15, which cut them into several small pieces. During this process, if foam plastic debris is generated, the electrostatic adsorption plate 17 can adsorb it.

[0059] Finally, the small pieces of foam board scraps from the third rack 12 are received by the collection box 16 and collected.

[0060] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A modified melamine foam offcut recycling apparatus, characterised in that: The waste recycling device for modified melamine foam includes: A placement platform (1) has an opening (2) at its top. A heating frame (3) is provided inside the opening (2). The top of the heating frame (3) is higher than the top of the placement platform (1). The heating frame (3) is detachably and fixedly connected to the placement platform (1). A telescopic frame (4) is provided at the top of the placement platform (1). The telescopic frame (4) is located outside the opening (2). Several elastic elements (5) are provided at the bottom of the telescopic frame (4). The two ends of the elastic elements (5) are fixedly connected to the telescopic frame (4) and the placement platform (1) respectively. The telescopic frame (4) has two states: higher than the top of the heating frame (3) and lower than the top of the heating frame (3). A first frame (6) is placed on top of a placement platform (1). A pressure plate (7) is provided between the first frame (6) and the placement platform (1). A first hydraulic cylinder (8) is provided between the pressure plate (7) and the first frame (6). The first hydraulic cylinder (8) is fixedly connected to the first frame (6). The output end of the first hydraulic cylinder (8) is fixedly connected to the pressure plate (7). The second frame (9) is placed on one side of the placement platform (1). A push plate (10) is provided between the second frame (9) and the placement platform (1). A second hydraulic cylinder (11) is provided between the push plate (10) and the second frame (9). The second hydraulic cylinder (11) is fixedly connected to the second frame (9). The output end of the second hydraulic cylinder (11) is fixedly connected to the push plate (10). The push plate (10) slides with the top of the placement platform (1). The third frame (12) is placed on the side of the placement platform (1) away from the second frame (9). The third frame (12) is connected to the placement platform (1). The top of the third frame (12) is provided with an upper conveying device and a lower conveying device from top to bottom. The upper conveying device and the lower conveying device are both connected to the third frame (12). A number of heating nets (15) are provided between the upper conveying device and the lower conveying device. The heating nets (15) are arranged linearly at equal distances between the upper conveying device and the lower conveying device. The heating nets (15) are detachably and fixedly connected to the third frame (12). Collection box (16) is placed on the side of the third frame (12) away from the placement table (1), and the collection box (16) is detachably and fixedly connected to the third frame (12).

2. The waste recycling device for modified melamine foam plastics according to claim 1, characterized in that: The upper conveying device includes several upper rotating rollers (1301), an upper conveyor belt (1302), and an upper rotary motor (1303). The two ends of the several upper rotating rollers (1301) are fixedly connected to the third frame (12). The upper conveyor belt (1302) is sleeved on the outside of the several upper rotating rollers (1301). The upper conveyor belt (1302) rotates and engages with the several upper rotating rollers (1301) outside. The surface of the upper conveyor belt (1302) opposite to the upper rotating rollers (1301) has several upper grooves. The output end of the upper rotary motor (1303) is detachably and fixedly connected to one of the upper rotating rollers (1301). The upper rotary motor (1303) is fixedly connected to the third frame (12).

3. The waste recycling device for modified melamine foam plastics according to claim 2, characterized in that: The lower conveying device includes several lower rotating rollers (1401), a lower conveyor belt (1402), and a lower rotary motor (1403). Both ends of the several lower rotating rollers (1401) are fixedly connected to the third frame (12). The lower rotating rollers (1401) are fitted with the lower conveyor belt (1402) on the outside. The lower conveyor belt (1402) rotates and engages with the several lower rotating rollers (1401) on the outside. The surface of the lower conveyor belt (1402) facing away from the lower rotating rollers (1401) has several lower grooves. The output end of the lower rotary motor (1403) is detachably and fixedly connected to one of the lower rotating rollers (1401). The lower rotary motor (1403) is fixedly connected to the third frame (12).

4. The waste recycling device for modified melamine foam plastics according to claim 1, characterized in that: The third frame (12) is provided with electrostatic adsorption plates (17) on both sides along the direction from the placement platform (1) to the collection box (16), and the electrostatic adsorption plates (17) are detachably connected to the third frame (12).

5. The waste recycling device for modified melamine foam according to claim 2 or 3, characterized in that: The surfaces of the upper conveyor belt (1302) and the lower conveyor belt (1402) are both coated with a heat-insulating and fire-retardant coating.

6. The waste recycling device for modified melamine foam plastics according to claim 5, characterized in that: Two fans (18) are provided between the upper rotary motor (1303) and the lower rotary motor (1403). The two fans (18) are respectively placed at the lower part of the upper rotary motor (1303) and the upper part of the lower rotary motor (1403). Both fans (18) are fixedly connected to the third frame (12).

7. The waste recycling device for modified melamine foam plastics according to claim 6, characterized in that: The third frame (12) is provided with a first magnet, which is fixedly connected to the third frame (12). The collection box (16) is provided with a second magnet, which is fixedly connected to the collection box (16). The third frame (12) and the collection box (16) are magnetically connected through the first magnet and the second magnet.

8. The waste recycling device for modified melamine foam plastics according to claim 7, characterized in that: The top of the collection box (16) is provided with a cover (19) that has an opening and closing function relative to the collection box (16). The cover (19) is hinged to the collection box (16). The bottom of the collection box (16) is provided with a plurality of wheels (20), which are hinged to the collection box (16).

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