A polyurethane foam recycling and compression apparatus

Abstract

The utility model discloses a kind of polyurethane foam recycling compression devices, belong to foam recycling compression technical field, the upper end of feed tank is equipped with feed hopper, feed hopper is equipped with feed inlet cover, the feeding of feed tank is realized by feed hopper;The sidewall of feed tank is connected with discharge tank by compression bin, the upper end of compression bin is equipped with pressing plate, the upper end of pressing plate is equipped with hydraulic mechanism, the compression operation of polyurethane foam in compression bin is realized by hydraulic mechanism, pressing plate, discharge adjusting device is connected at discharge tank and compression bin, the size of discharge port is adjusted by discharge adjusting device, prevent polyurethane foam from falling when compressing, the outer end of discharge tank is equipped with turnover mechanism. Feed system, pressing system and turnover mechanism realize the continuous, automation processing of polyurethane foam from continuous conveying, sealed compression to safe and smooth discharge, improve recycling compression efficiency, guarantee the stable and reliable of overall processing process.

Description

Technical Field

[0001] This utility model relates to the field of foam recycling and compression technology, and in particular to a polyurethane foam recycling and compression device. Background Technology

[0002] With the development of the home appliance industry and the improvement of people's living standards, refrigerators, as commonly used household appliances, are experiencing a rapid increase in both their ownership and replacement rate, resulting in a large number of discarded refrigerators. The recycling and processing of discarded refrigerators typically involves crushing and sorting to achieve the separate recycling and reuse of different materials such as metals, plastics, and glass. Polyurethane foam, as a high-performance insulation material, is widely used in the interlayer of refrigerator bodies and doors due to its low density, good thermal insulation, shock absorption, and structural strength, playing a crucial role in thermal insulation.

[0003] However, after waste refrigerators are crushed and sorted, the resulting polyurethane foam material is usually in a loose state with extremely low density and large volume. This causes great inconvenience to subsequent storage and transportation, requiring a large amount of storage space and significantly increasing transportation costs, thus restricting the efficient recycling and resource utilization of waste polyurethane foam. Utility Model Content

[0004] The main objective of this invention is to provide a polyurethane foam recycling and compression device, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A polyurethane foam recycling and compression device includes a base frame, a feed box, a motor, a spiral shaft, spiral blades, a drive mechanism, a belt drive, and a reducer. The feed box, reducer, motor, and drive mechanism are mounted on the base frame. The spiral shaft is placed inside the feed box and connected to the output end of the reducer. The reducer and motor are connected by a belt drive to form the drive mechanism. The spiral blades are sleeved on the spiral shaft, and the drive mechanism enables the spiral shaft and its spiral blades to rotate, thereby realizing the conveying of polyurethane foam. The upper end of the feeding box is equipped with a feeding hopper, and the feeding hopper is equipped with a feeding mask, so that the feeding box can be fed through the feeding hopper; The side wall of the feed box is connected to the discharge box via a compression chamber. The upper end of the compression chamber is equipped with a pressure plate, and a hydraulic mechanism is installed on the upper end of the pressure plate. The compression of polyurethane foam in the compression chamber is achieved through the hydraulic mechanism and the pressure plate. The discharge box and compression chamber are connected to a discharge adjustment device, which adjusts the size of the discharge port to prevent polyurethane foam from falling during compression. The outer port of the discharge box is equipped with a flipping mechanism, which loosens the compressed polyurethane foam block at the discharge port for easy discharge.

[0006] In a further preferred embodiment, the hydraulic mechanism includes a cylinder support and a pressing cylinder. The cylinder support is installed on the compression chamber and the discharge box, and the pressing cylinder is installed on the cylinder support and connected to the pressing plate. The pressing cylinder extends and retracts to drive the pressing plate to move in the compression chamber, thereby realizing the compression operation of polyurethane foam. In a further preferred embodiment, the discharge adjustment device includes a top plate and a hinge component. The top plate is connected to the pressure plate through the hinge component. When the pressure plate is pressed down, the top plate tilts accordingly, thereby closing the outlet of the compression chamber. In a further preferred embodiment, the flipping mechanism includes a fixed frame and an electric push rod. The fixed frame is bolted to the discharge box and the base frame. The electric push rod is connected to the outer end of the fixed frame. The upper end of the fixed frame is connected to a movable bar through a hinge assembly. The movable bar is connected to the telescopic end of the electric push rod through the hinge assembly. The inner bottom of the discharge box is provided with a flipping base plate, which is connected to the movable bar. The electric push rod drives the flipping base plate to move. In a further preferred embodiment, the outer end of the flipping base plate is designed with an arc-shaped upward curve, and the shape of the flipping base plate is consistent with the inner bottom of the discharge box. After the flipping base plate is flipped, the arc-shaped upward curve forms an arc-shaped discharge port, which prevents it from affecting the electric push rod and achieves safe material discharge. In a further preferred embodiment, the movable strip is embedded in the lower notch of the flip-up base plate and the two are fixed by bolts. The movable strip is connected to the telescopic end of the electric push rod by a hinge, and the tail of the electric push rod is connected to the fixed frame by a hinge. In a further preferred embodiment, the spiral feeding mechanism consists of a spiral shaft and spiral blades, with a bearing provided between the spiral shaft and the feed box.

[0007] Compared with the prior art, the present invention has the following beneficial effects: The conveying system enables continuous transport of polyurethane foam; the bearings between the screw shaft and the feed box ensure smooth rotation and good sealing; the screw blades are welded with a combination of Q235 base material and NM400 wear-resistant steel plate, significantly improving service life and wear resistance. Material compression is achieved by a hydraulic mechanism driving the pressure plate in vertical reciprocating motion; the top plate of the discharge adjustment device tilts in conjunction with the pressure plate, sealing the outlet of the compression chamber during compression to effectively prevent accidental material drop.

[0008] The electric push rod drives the movable strip to flip the base plate, and the arc-shaped upward-curved discharge port loosens the compressed polyurethane foam block; the arc-shaped discharge port avoids interfering with the operation of the electric push rod and ensures a safe and smooth discharge process.

[0009] The material conveying system, pressing system, and turning mechanism work together to achieve continuous and automated processing of polyurethane foam from continuous conveying and sealing compression to safe and smooth discharge, improving recycling and compression efficiency and ensuring the stability and reliability of the overall processing. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the overall structure of this utility model; Figure 3 This is a diagram illustrating the pressing system of this utility model; Figure 4 This is a diagram illustrating the spiral feeding mechanism of this utility model; Figure 5 This is a diagram illustrating the feeding mask and observation window of this utility model; Figure 6 This is a diagram illustrating the discharge box and tilting mechanism of this utility model.

[0011] In the diagram: 1. Base frame; 2. Feed box; 3. Motor; 4. Drive mechanism; 5. Belt drive; 6. Reducer; 7. Screw pusher mechanism; 8. Pressure plate; 9. Hydraulic mechanism; 10. Discharge adjustment device; 11. Discharge box; 12. Feed hopper; 13. Feed mask; 14. Compression chamber; 15. Screw shaft; 16. Screw blades; 17. Pressing cylinder; 18. Cylinder bracket; 19. Observation window; 20. Fixing frame; 21. Electric push rod; 22. Movable bar; 23. Tilting base plate. Detailed Implementation

[0012] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0013] like Figure 1 - Figure 6As shown, a polyurethane foam recycling and compression device includes a base frame 1, a feed box 2, a motor 3, a screw shaft 15, screw blades 16, a drive mechanism 4, a belt drive 5, and a reducer 6. The feed box 2, reducer 6, motor 3, and drive mechanism 4 are all fixedly mounted on the base frame 1. The screw shaft 15 is horizontally placed inside the feed box 2, with one end connected to the output end of the reducer 6. The reducer 6 and motor 3 are powered by the belt drive 5, together forming the drive mechanism 4. The screw blades 16 are fixedly sleeved on the outside of the screw shaft 15. Driven by the drive mechanism 4, the screw shaft 15 and screw blades 16 rotate together, realizing the continuous conveying of polyurethane foam.

[0014] A conical feed hopper 12 is installed at the upper end of the feed box 2. A feed mask 13 is provided on the top of the feed hopper 12, and the material falls into the feed box 2 through the feed hopper 12. The side wall of the feed box 2 is connected to the discharge box 11 through a compression chamber 14. A pressure plate 8 that can move up and down is provided above the compression chamber 14. A hydraulic mechanism 9 is installed at the upper end of the pressure plate 8. The pressure plate 8 is driven to press down by the hydraulic mechanism 9, which can compress the polyurethane foam in the compression chamber 14.

[0015] A discharge adjustment device 10 is provided at the connection between the discharge box 11 and the compression chamber 14. This device can adjust the size of the discharge port according to the compression state, effectively preventing materials from falling accidentally during the compression process. The outlet end of the discharge box 11 is provided with a flipping mechanism, which is used to loosen the compressed polyurethane foam block during discharge to facilitate smooth discharge.

[0016] The hydraulic mechanism 9 includes a cylinder support 18 and a pressing cylinder 17. The cylinder support 18 is fixedly installed on the upper part of the compression chamber 14 and the discharge box 11. The pressing cylinder 17 is installed on the cylinder support 18, and its piston rod is connected to the pressure plate 8. Through the extension and retraction of the pressing cylinder 17, the pressure plate 8 is driven to make vertical reciprocating motion in the compression chamber 14, thereby realizing the function of compressing the material.

[0017] The discharge adjustment device 10 includes a top plate and a hinge component. The top plate is linked to the pressure plate 8 through the hinge component. When the pressure plate 8 is pressed down, the top plate tilts accordingly, thereby sealing the outlet of the compression chamber 14 and playing a sealing role during the compression process.

[0018] The tilting mechanism includes a fixed frame 20 and an electric push rod 21. The fixed frame 20 is bolted to the discharge box 11 and the base frame 1. The outer end of the fixed frame 20 is connected to the electric push rod 21, and its upper end is connected to a movable bar 22 via a hinge assembly. The other end of the movable bar 22 is hinged to the telescopic end of the electric push rod 21. The inner bottom of the discharge box 11 is provided with a tilting base plate 23, which is connected to the movable bar 22 and can achieve tilting movement under the push of the electric push rod 21.

[0019] The discharge port of the flipping base plate 23 is designed with an arc-shaped upward curve, the shape of which matches the inner bottom contour of the discharge box 11. When the flipping base plate 23 is in motion, the arc-shaped upward curve forms an arc-shaped discharge port, which avoids interfering with the operation of the electric push rod 21 and ensures the safety and smoothness of the discharge process.

[0020] The movable strip 22 is embedded in the notch at the bottom of the flip base plate 23 and is fastened with bolts. The movable strip 22 is connected to the telescopic end of the electric push rod 21 by a hinge, and the tail of the electric push rod 21 is also connected to the fixed frame 20 by a hinge, forming a stable and reliable transmission structure.

[0021] The spiral feeding mechanism 7 consists of a spiral shaft 15 and spiral blades 16. A bearing is installed between the spiral shaft 15 and the feed box 2 to ensure smooth rotation and good sealing.

[0022] The side wall of the feed mask 13 has an observation hole and a transparent observation window 19 for real-time monitoring of the feeding status. The base frame 1, serving as the supporting structure of the entire equipment, is made of Q235B square tubing and possesses good strength and rigidity. The spiral shaft 15 is precision-machined from Q235 steel, and the spiral blades 16 are welded to the outer circumferential surface of the spiral shaft 15. The spiral blades 16 are made of a combination of Q235 base material and NM400 wear-resistant steel plate, significantly improving wear resistance and service life.

[0023] The base frame 1 (Q235B square tube welded) is fixed as an overall support; the feed box 2, reducer 6, motor 3 and drive mechanism 4 are fixed to the base frame 1 with bolts. The spiral shaft 15 (Q235 steel machined) is horizontally installed inside the feed box 2, and one end of it is connected to the output end of the reducer 6; spiral blades 16 (Q235 base material and NM400 wear-resistant steel plate combined and welded) are welded to the outer circumference of the spiral shaft 15; the motor 3 and reducer 6 are connected by belt drive 5 to form the drive mechanism 4.

[0024] A conical feed hopper 12 is installed at the upper end of the feed box 2, and a feed mask 13 with an observation window 19 is installed on the top of the feed hopper 12. The side wall of the feed box 2 is connected to the discharge box 11 through the compression chamber 14; a hydraulic mechanism 9 is installed on the upper part of the compression chamber 14 (the cylinder bracket 18 is fixed to the upper part of the compression chamber 14 and the discharge box 11, the pressing cylinder 17 is installed on the cylinder bracket 18, and the piston rod is connected to the pressure plate 8 to ensure that the pressure plate 8 moves vertically back and forth in the compression chamber 14). The top plate of the discharge adjustment device 10 is linked to the pressure plate 8 through a hinge, so that when the pressure plate 8 is pressed down, the top plate tilts accordingly to close the outlet of the compression chamber 14.

[0025] The fixed frame 20 is fixed to the discharge box 11 and the base frame 1 by bolts. The outer end is connected to the electric push rod 21, and the upper end is connected to the movable bar 22 by a hinge assembly (the other end of the movable bar 22 is hinged to the telescopic end of the electric push rod 21). The bottom of the discharge box 11 is equipped with a flip-down bottom plate 23 (which is bolted to the movable bar 22 and has an arc-shaped upturned end that matches the inner bottom contour of the discharge box 11).

[0026] The motor 3 is started, which drives the reducer 6 via belt drive 5, causing the spiral shaft 15 and spiral blades 16 to rotate. Polyurethane foam falls into the feed box 2 through the feed mask 13 and feed hopper 12, and is continuously conveyed to the compression chamber 14 by the spiral blades 16. The pressing cylinder 17 of the hydraulic mechanism 9 extends and retracts, causing the pressing plate 8 to press down. The top plate of the discharge adjustment device 10 tilts in conjunction with the pressing plate 8 to close the outlet of the compression chamber 14, and the pressing plate 8 compresses the material. After compression, the pressing plate 8 rises, the top plate resets and opens the outlet, and the compressed foam block enters the discharge box 11.

[0027] The telescopic end of the electric push rod 21 pushes the movable bar 22, which rotates around the upper hinge assembly of the fixed frame 20, causing the connected tilting base plate 23 to tilt at the bottom inside the discharge box 11. The arc-shaped upward structure of the tilting base plate 23 matches the inner bottom of the discharge box 11, forming an arc-shaped discharge port to avoid interfering with the operation of the electric push rod 21. During the tilting process, the arc-shaped upward part of the tilting base plate 23 loosens the compressed foam block, allowing it to be smoothly discharged along the arc-shaped discharge port.

[0028] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A polyurethane foam recycling and compression device, comprising a base frame (1), a feed box (2), a motor (3), a spiral shaft (15), spiral blades (16), a spiral pushing mechanism (7), a drive mechanism (4), a belt drive (5), and a reducer (6), wherein the feed box (2), the reducer (6), the motor (3), and the drive mechanism (4) are mounted on the base frame (1), the spiral shaft (15) is placed inside the feed box (2) and connected to the output end of the reducer (6), the reducer (6) and the motor (3) are connected by the belt drive (5) to form the drive mechanism (4), the spiral blades (16) are sleeved on the spiral shaft (15), and the spiral shaft (15) and its spiral blades (16) are rotated by the drive mechanism (4), thereby realizing the conveying of polyurethane foam, characterized in that: The upper end of the feeding box (2) is equipped with a feeding hopper (12), and the feeding hopper (12) is equipped with a feeding mask (13), so that the feeding box (2) can be fed through the feeding hopper (12); The side wall of the feed box (2) is connected to the discharge box (11) through the compression chamber (14). The upper end of the compression chamber (14) is provided with a pressure plate (8), and a hydraulic mechanism (9) is installed on the upper end of the pressure plate (8). The compression operation of polyurethane foam in the compression chamber (14) is realized through the hydraulic mechanism (9) and the pressure plate (8). The discharge box (11) and the compression chamber (14) are connected to a discharge adjustment device (10). The discharge port size can be adjusted by the discharge adjustment device (10) to prevent polyurethane foam from falling during compression. The outer port of the discharge box (11) is provided with a flipping mechanism. The polyurethane foam block compressed at the discharge port can be loosened by the flipping mechanism to facilitate the discharge operation.

2. The polyurethane foam recycling and compression device according to claim 1, characterized in that: The hydraulic mechanism (9) includes a cylinder bracket (18) and a pressing cylinder (17). The cylinder bracket (18) is installed on the compression chamber (14) and the discharge box (11). The pressing cylinder (17) is installed on the cylinder bracket (18) and connected to the pressing plate (8). The pressing plate (8) is driven to move in the compression chamber (14) by the extension and retraction of the pressing cylinder (17), thereby realizing the compression operation of polyurethane foam.

3. The polyurethane foam recycling and compression device according to claim 2, characterized in that: The discharge adjustment device (10) includes a top plate and a hinge. The top plate is connected to the pressure plate (8) through the hinge. When the pressure plate (8) is pressed down, the top plate tilts accordingly, thereby closing the outlet of the compression chamber (14).

4. The polyurethane foam recycling and compression device according to claim 3, characterized in that: The flipping mechanism includes a fixed frame (20) and an electric push rod (21). The fixed frame (20) is bolted to the discharge box (11) and the base frame (1). The outer end of the fixed frame (20) is connected to the electric push rod (21). The upper end of the fixed frame (20) is connected to a movable bar (22) through a hinge assembly. The movable bar (22) is connected to the telescopic end of the electric push rod (21) through the hinge assembly. The inner bottom of the discharge box (11) is provided with a flipping base plate (23) and connected to the movable bar (22). The flipping base plate (23) is driven to move by the electric push rod (21).

5. A polyurethane foam recycling and compression device according to claim 4, characterized in that: The outer port of the flipping base plate (23) is designed with an arc-shaped upward curve. The shape of the flipping base plate (23) is consistent with the inner bottom of the discharge box (11). After the flipping base plate (23) is flipped, the arc-shaped upward curve forms an arc-shaped discharge port to prevent it from affecting the electric push rod (21) and to achieve safe discharge.

6. A polyurethane foam recycling and compression device according to claim 5, characterized in that: The movable strip (22) is embedded in the lower notch of the flip base plate (23) and the two are fixed by bolts. The movable strip (22) is connected to the telescopic end of the electric push rod (21) by a hinge. The tail of the electric push rod (21) is connected to the fixed frame (20) by a hinge.

7. A polyurethane foam recycling and compression device according to claim 6, characterized in that: The spiral feeding mechanism (7) consists of a spiral shaft (15) and spiral blades (16), and a bearing is provided between the spiral shaft (15) and the feed box (2).

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