PVC film waste crushing and melting device

Abstract

The present application relates to PVC film waste crushing processing technical field, especially to a kind of PVC film waste crushing melting device.The present application provides a kind of PVC film waste crushing melting device, including support, melting furnace, melter, separation filter plate and crushing shell etc., support left side is fixedly connected with melting furnace, melting furnace top is installed with melter, melting furnace inside is installed with separation filter plate, support inside is installed with crushing shell.Two groups of crushing rollers of the present application are meshed by straight gear and rotate reversely, form high-efficiency shearing force, waste is rapidly crushed, scraper is in real time cleaning roller surface, avoid material adhesion, ensure that crushing efficiency is stable, and under the linkage of rotary disc and hydraulic cylinder structure, driving cutter reciprocating cutting large waste, prevent large waste from being stuck on crushing roller, avoid the problem of gap block and winding between gear teeth.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of PVC film waste crushing treatment, and particularly relates to a PVC film waste crushing and melting device. BACKGROUND

[0002] In the PVC film production process, due to the process limitations of raw material cutting, corner material recycling and other links, a large amount of irregular large waste or waste film in rolls will be produced. These waste materials, PVC film waste materials are flexible and have a large volume. If they are directly put into the traditional crushing and melting treatment system, the crushing will not be complete due to insufficient shearing force when they are put into the crushing roller. The uncrushed fragments (especially the waste film in rolls) are easy to be wound on the surface of the crushing roller, causing the gap between the teeth to be blocked, reducing the crushing efficiency. At the same time, the wound fragments will increase the load of the equipment, causing the motor to overheat and even stop, seriously affecting the continuous production.

[0003] At present, in order to solve the above problems, the industry often uses pre-cutting or manual sorting to reduce the size of the waste materials, but the cost of manual intervention is high and there is a safety hazard. Some devices add a pre-crushing knife group, but the structure is complex and the cutting force is insufficient, and it is still difficult to avoid the problems of gap blockage and winding between the teeth.

[0004] Therefore, it is urgent to develop a PVC film waste crushing and melting device to solve the above problems. SUMMARY

[0005] In order to overcome the above-mentioned shortcomings, the present application provides a PVC film waste crushing and melting device.

[0006] The technical scheme is: a PVC film waste crushing and melting device, comprising a support, a melting furnace, a melter, a separation filter plate, a crushing shell, a crushing motor, a crushing roller, a straight gear, a conveying pipe, a rotating disc, a connecting rod, a push rod, a hydraulic cylinder, a piston rod, a top rod, a fixed rod, a rotating frame and a cutter, the left side of the support is fixedly connected with the melting furnace, the top of the melting furnace is provided with the melter, the inside of the melting furnace is provided with the separation filter plate, the inside of the support is provided with the crushing shell, the rear side of the crushing shell is provided with the crushing motor, the output shaft of the crushing motor is provided with the crushing roller, another crushing roller is rotatably installed in the crushing shell, the two crushing rollers are fixedly connected with the straight gears, the two straight gears are meshed with each other, the crushing shell and the melting furnace are connected and communicated through the conveying pipe, the front end of the left crushing roller is fixedly provided with the rotating disc, the eccentric part of the rotating disc is fixedly provided with the connecting rod, the front end of the connecting rod is rotatably connected with the push rod, the front side of the crushing shell is provided with the hydraulic cylinder, the inside of the hydraulic cylinder is slidably provided with the piston rod, the push rod is inserted into the inside of the hydraulic cylinder, the top of the piston rod is slidably connected with the top rod, the upper part of the front side of the crushing shell is fixedly provided with the fixed rod, the fixed rod is rotatably connected with the rotating frame, the top rod and the bottom right side of the rotating frame are slidably connected, the two sides of the rotating frame are slidably provided with the cutters, the rear upper part of the crushing shell is fixedly provided with the guide rails on the left and right sides, the two cutters are slidably arranged on the corresponding guide rails, and the stretch springs are fixedly connected between the two cutters and the corresponding guide rails.

[0007] Further, the scraper is further provided, the inside of the crushing shell is fixedly provided with two scrapers, and the two scrapers are located below the corresponding crushing rollers.

[0008] Further, the fixed seat, the wedge-shaped rod, the reset spring and the screen are further provided, the front lower part of the crushing shell is fixedly provided with the fixed seat, the wedge-shaped rod is slidably connected with the fixed seat, the rotating disc intermittently extrudes the wedge-shaped rod to move downward, the reset spring is connected between the wedge-shaped rod and the fixed seat, the screen is rotatably connected with the inside of the crushing shell, the screen is located below the two crushing rollers, and the front side of the screen is slidably connected with the lower part of the wedge-shaped rod.

[0009] Further, the servo motor and the spiral conveying rod are further provided, the lower part of the crushing shell is fixedly provided with the servo motor, the output shaft of the servo motor is fixedly provided with the spiral conveying rod, the spiral conveying rod is located below the screen, and the spiral conveying rod is located in the inside of the conveying pipe.

[0010] Further, it also includes connecting rods, push rods, hydraulic cylinders, piston rods, jacks, fixed rods, rotating frames, cutters, guide rails, extension springs, spur gears, belt pulleys, flat belts, rotating shafts, conveyor belts, return boxes, torsion springs, jacks, receiving plates, inclined plates, guide frames, first springs, guide rods, limit rods and second springs, the full gear is fixedly installed at the front end of the right side of the crushing roller, the belt pulley is rotatably installed on the upper front side of the crushing shell, the belt pulley is located on the right side of the full gear, another full gear is fixedly installed on the belt pulley, the two full gears are meshed with each other, the rotating shaft is rotatably connected to the lower right side of the support, another belt pulley is fixedly installed at the front end of the rotating shaft, the two belt pulleys are driven by the flat belt, another rotating shaft is also rotatably installed on the upper right side of the support, the conveyor belt is wound between the two rotating shafts, a plurality of return boxes are rotatably installed on the conveyor belt at equal intervals, a torsion spring is connected between each return box and the conveyor belt, jacks are fixedly installed on the front and rear sides of each return box, the receiving plate is slidably installed on the top of the crushing shell, the top of the receiving plate is inclined from low left to high right, the inclined plates are fixedly connected to the front and rear sides of the receiving plate, the guide frames are fixedly installed on the upper front and rear sides of the crushing shell, the receiving plate is slidably connected with the guide frames, the first spring is connected between the receiving plate and the guide rod, the guide rods are fixedly installed on the right sides of the top of the support, the limit rod is slidably connected between the two guide rods, the return box is in contact with the limit rod when moving upward, and the second spring is fixedly connected between the limit rod and the corresponding guide rod.

[0011] Further, it also includes a mixing motor and a stirring rod, the mixing motor is fixedly installed on the right side of the melting furnace, and the stirring rod is fixedly installed on the output shaft of the mixing motor and located in the interior of the melting furnace.

[0012] Further, it also includes a conveying machine, and the conveying machine is fixedly installed on the top left side of the support 1.

[0013] Further, the elastic strength of the torsion spring is greater than that of the first spring, and the elastic strength of the second spring is greater than that of the torsion spring.

[0014] 1、The two groups of crushing rollers of the present application are reversely rotated through the meshing of spur gears, high-efficiency shearing force is formed, waste materials are rapidly crushed, the scraper cleans the roller surface in real time, material adhesion is avoided, the crushing efficiency is stable, and under the linkage of the rotating disc and the hydraulic cylinder structure, the cutter is driven to reciprocatingly cut large waste materials, large waste materials are prevented from being stuck on the crushing roller, and the problems of gap blockage and winding between the roller teeth are avoided.

[0015] 2、The rotating disc of the present application is driven by the wedge-shaped rod to periodically rotate and vibrate the screen, and the high-efficiency screening is realized through the rapid resetting of the reset spring, the qualified crushed materials are accurately conveyed to the melting furnace by the spiral conveying rod, manual intervention is reduced, the large waste materials intercepted by the screen are automatically conveyed back to the cutter area by the spur gears and the flat belts, the large waste materials are secondarily processed and cut, and the completeness of waste material crushing is improved.

[0016] 3、The backflow box of the present application realizes automatic pouring through the top block, the limiting rod and the torsional spring, and combines with the guide of the receiving plate to ensure that the substandard waste returns to the crushing process, thereby avoiding waste of raw materials. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0018] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the melting furnace, the melter and the separation filter plate of the present application.

[0019] Figure 3 It is a schematic diagram of the three-dimensional cross-sectional structure of the melting furnace, the crushing shell and the conveying pipe of the present application.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the crushing motor, the crushing roller and the straight gear of the present application.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the crushing roller, the straight gear and the scraper of the present application.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the rotating disc, the fixed seat and the wedge-shaped rod of the present application.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the fixed seat, the wedge-shaped rod and the return spring of the present application.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the wedge-shaped rod, the return spring and the screen of the present application.

[0025] Figure 9 It is a schematic diagram of the three-dimensional cross-sectional structure of the connecting rod, the push rod and the hydraulic cylinder body of the present application.

[0026] Figure 10 It is a schematic diagram of the three-dimensional structure of the piston rod, the jacking rod and the fixed rod of the present application.

[0027] Figure 11 It is a schematic diagram of the three-dimensional structure of the fixed rod, the rotating frame and the cutter of the present application.

[0028] Figure 12 It is a schematic diagram of the three-dimensional structure of the full gear, the belt pulley and the flat belt of the present application.

[0029] Figure 13 It is a schematic diagram of the three-dimensional structure of the rotating shaft, the conveyor belt and the backflow box of the present application.

[0030] Figure 14 It is a schematic diagram of the three-dimensional structure of the backflow box, the torsional spring and the top block of the present application.

[0031] Figure 15 It is a perspective view of the receiving plate, the inclined plate and the guide frame of the application.

[0032] Figure 16 It is a perspective view of the separating filter plate, the mixing motor and the stirring rod of the application.

[0033] Figure 17 It is a perspective view of the support, the crushing shell and the conveyor of the application.

[0034] Reference signs: 1 support, 2 melting furnace, 3 melter, 4 separating filter plate, 5 crushing shell, 6 crushing motor, 7 crushing roller, 8 straight gear, 9 scraper, 10 conveying pipe, 11 rotating disc, 12 fixed seat, 13 wedge-shaped rod, 14 return spring, 15 screen, 16 servo motor, 17 spiral conveying rod, 18 connecting rod, 19 push rod, 20 hydraulic cylinder, 21 piston rod, 22 jacking rod, 23 fixed rod, 24 rotating frame, 25 cutter, 26 guide slide rail, 27 tension spring, 28 full gear, 29 belt pulley, 30 flat belt, 31 rotating shaft, 32 conveyor belt, 33 backflow box, 34 torsion spring, 35 jacking block, 36 receiving plate, 37 inclined plate, 38 guide frame, 39 first spring, 40 guide rod, 41 limiting rod, 42 second spring, 43 mixing motor, 44 stirring rod, 45 conveyor. DETAILED DESCRIPTION

[0035] The application will be described in detail below with reference to the drawings.

[0036] Embodiment: A PVC film waste crushing and melting device, like Figures 1-11As shown, the system includes a support frame 1, a melting furnace 2, a melter 3, a separator filter plate 4, a crushing shell 5, a crushing motor 6, a crushing roller 7, a spur gear 8, a conveying pipe 10, a rotating disk 11, a connecting rod 18, a push rod 19, a hydraulic cylinder 20, a piston rod 21, a push rod 22, a fixing rod 23, a rotating frame 24, and a cutter 25. The melting furnace 2 is bolted to the left side of the support frame 1. A melter 3 for heating and melting PVC film waste is fixedly installed on the front top of the melting furnace 2. A separator filter plate 4 for blocking unmelted PVC film waste is fixedly installed in the middle of the melting furnace 2. The crushing shell 5 is fixedly installed in the middle of the support frame 1. A crushing motor 6 is fixedly installed on the rear side of the crushing shell 5. A crushing roller 7 is fixedly installed on the output shaft of the crushing motor 6. Another crushing roller 7 is rotatably installed on the right side inside the crushing shell 5. Spur gears 8 are fixedly connected to the rear sides of both crushing rollers 7, and the two spur gears 8 mesh with each other. The crushing shell 5 and the melting furnace 2 are connected by a conveying pipe 10. Connected and interconnected, a rotating disk 11 is fixedly installed at the front end of the left crushing roller 7. A connecting rod 18 is fixedly installed at the eccentric part of the rotating disk 11. A push rod 19 is rotatably connected to the front end of the connecting rod 18. A hydraulic cylinder 20 is fixedly installed on the upper front side of the crushing housing 5. A piston rod 21 is slidably installed on the upper part of the hydraulic cylinder 20. The push rod 19 is inserted into the interior of the hydraulic cylinder 20. The hydraulic cylinder 20 is filled with hydraulic oil. A top rod 22 is slidably connected to the upper part of the piston rod 21. The upper front side of the crushing housing 5 is fixed. A fixed rod 23 is installed, and a rotating frame 24 is rotatably connected to the fixed rod 23. The top rod 22 is in sliding contact with the bottom right side of the rotating frame 24. Cutters 25 are slidably installed on both the left and right sides of the rotating frame 24. The two cutters 25 are slidably connected to the upper part of the crushing housing 5. Guide rails 26 are fixedly connected to the left and right sides of the upper rear part of the crushing housing 5. The two cutters 25 slide on the corresponding guide rails 26. Tension springs 27 are fixedly connected between the two cutters 25 and the corresponding guide rails 26.

[0037] like Figure 5 As shown, it also includes scrapers 9. Two scrapers 9 are fixedly installed inside the crushing housing 5, and both scrapers 9 are located below the corresponding crushing rollers 7.

[0038] like Figure 17 As shown, it also includes a transmission machine 45, which is fixedly installed on the top left side of the bracket 1.

[0039] When the PVC film waste needs to be recycled, the device can be used for processing, first, the transmission machine 45 is started to convey the PVC film waste into the crushing shell 5, then the crushing motor 6 is started to drive the left crushing roller 7 to rotate, the right crushing roller 7 is driven to rotate in the opposite direction through the meshing relationship of the two spur gears 8 on the rear side, the toothed structure on the surface of the two groups of crushing rollers 7 shears and crushes the waste, the scraper 9 continuously scrapes off the debris attached to the surface of the crushing roller 7 to avoid the debris from adhering or winding on the crushing roller 7, during the crushing process, the rotating disc 11 at the front end of the left crushing roller 7 rotates with the crushing roller 7, the connecting rod 18 connected to the eccentric position of the rotating disc 11 pushes the push rod 19 to move up and down reciprocally, the push rod 19 is inserted into the hydraulic cylinder body 20 and squeezes the hydraulic oil, the piston rod 21 drives the top rod 22 to rise, the top rod 22 contacts the right side of the bottom of the rotating frame 24 to force the rotating frame 24 to rotate around the fixed rod 23, and then the rotating frame 24 pulls the left and right two cutting knives 25 to slide to the middle along the guide slide rail 26 to cut the large pieces of PVC film waste conveyed by the transmission machine 45, after cutting, the push rod 19 moves downward under the pulling action of the connecting rod 18, the push rod 19 extracts the hydraulic oil in the hydraulic cylinder body 20, so as to force the piston rod 21 to drive the top rod 22 to move downward, the top rod 22 no longer pushes the rotating frame 24, and the stretching spring 27 also resets the cutting knife 25 to the original position, and then the cutting knife 25 drives the rotating frame 24 to reverse to the original position, so as to continuously cut the PVC film waste, avoiding the influence of the large pieces of PVC film waste on the subsequent crushing work of the crushing roller 7.

[0040] As shown in Figures 6-8 , it further comprises a fixed seat 12, a wedge-shaped rod 13, a reset spring 14 and a screen 15, the fixed seat 12 is fixedly installed on the lower front side of the crushing shell 5, the wedge-shaped rod 13 is slidably connected to the fixed seat 12, the rotating disc 11 intermittently presses the wedge-shaped rod 13 to move downward, the reset spring 14 is connected between the wedge-shaped rod 13 and the fixed seat 12, the screen 15 is rotatably connected to the lower part in the crushing shell 5, the screen 15 is located below the two crushing rollers 7, and the front side of the screen 15 is slidably connected to the lower part of the wedge-shaped rod 13.

[0041] As shown in Figure 8 , it further comprises a servo motor 16 and a spiral conveying rod 17, the servo motor 16 is fixedly installed on the lower right side of the crushing shell 5, the spiral conveying rod 17 is fixedly installed on the output shaft of the servo motor 16, the spiral conveying rod 17 is located below the screen 15, and the spiral conveying rod 17 is located in the conveying pipe 10.

[0042] As shown in Figures 9-15As shown, it also includes connecting rod 18, push rod 19, hydraulic cylinder body 20, piston rod 21, top rod 22, fixed rod 23, rotating frame 24, cutter 25, guide slide rail 26, tension spring 27, full gear 28, belt pulley 29, flat belt 30, rotating shaft 31, conveyor belt 32, reflux box 33, torsional spring 34, top block 35, receiving plate 36, inclined plate 37, guide frame 38, first spring 39, guide rod 40, limiting rod 41 and second spring 42, the full gear 28 is fixedly installed at the front end of the right side pulverizing roller 7, the belt pulley 29 is rotatably installed on the upper front side of the pulverizing shell 5, the belt pulley 29 is located on the right side of the full gear 28, another full gear 28 is fixedly installed on the belt pulley 29, the two full gears 28 are meshed with each other, the rotating shaft 31 is rotatably connected to the lower right side of the support 1, another belt pulley 29 is fixedly installed at the front end of the rotating shaft 31, the two belt pulleys 29 are driven through the flat belt 30, another rotating shaft 31 is also rotatably installed on the upper right side of the support 1, the conveyor belt 32 is wound between the two rotating shafts 31, a plurality of reflux boxes 33 are rotatably installed on the conveyor belt 32 at intervals, the torsional spring 34 is connected between each reflux box 33 and the conveyor belt 32, the top block 35 is fixedly installed on the front and rear sides of each reflux box 33, the receiving plate 36 is slidably installed on the top of the pulverizing shell 5, the top of the receiving plate 36 is inclined from left to right, the inclined plate 37 is fixedly connected to the front and rear sides of the receiving plate 36, the guide frame 38 is fixedly installed on the upper front and rear sides of the pulverizing shell 5, the receiving plate 36 is slidably connected with the guide frame 38, the first spring 39 is connected between the receiving plate 36 and the guide rod 40, the guide rod 40 is fixedly installed on the top of the right side of the support 1, the limiting rod 41 is slidably connected between the two guide rods 40, the limiting rod 41 will be in contact with the reflux box 33 when the reflux box 33 moves upward, the second spring 42 is fixedly connected between the limiting rod 41 and the corresponding guide rod 40, the elastic strength of the torsional spring 34 is greater than that of the first spring 39, and the elastic strength of the second spring 42 is greater than that of the torsional spring 34.

[0043] As Figure 16 shown, it also includes mixing motor 43 and stirring rod 44, the mixing motor 43 is fixedly installed on the right side of the melting furnace 2, the stirring rod 44 is fixedly installed on the output shaft of the mixing motor 43, and the stirring rod 44 is located in the interior of the melting furnace 2.

[0044] When the rotating disc 11 rotates, the rotating disc 11 intermittently drives the wedge-shaped rod 13 to move downward, and then the wedge-shaped rod 13 is reset to move upward under the action of the reset spring 14, so as to realize the intermittent reciprocating lifting movement of the wedge-shaped rod 13. When the wedge-shaped rod 13 intermittently reciprocates, the driving screen 15 is intermittently rotated clockwise, so as to push the PVC film waste fragments that are not cut on the screen 15 to one side, and the screened fragments are leaked to the spiral conveying rod 17. By starting the servo motor 16 to drive the spiral conveying rod 17 to rotate, the fragments are conveyed to the melting furnace 2 through the conveying pipe 10. The melting device 3 heats the fragments to a molten state, the mixing motor 43 drives the stirring rod 44 to stir and homogenize the molten liquid, and the molten liquid flows to the next process after being filtered by the separation filter plate 4, so as to complete the crushing and melting of the PVC film waste.

[0045] The PVC film waste fragments that do not pass through the screen 15 will be pushed by the screen 15 to the right side of the support 1. When the right side crushing roller 7 rotates, the right side crushing roller 7 drives the front end full gear 28 to rotate, and drives the belt pulley 29 to rotate through the full gear 28 on the belt pulley 29, and then drives the rotating shaft 31 and the conveying belt 32 to rotate under the transmission of the flat belt 30. The return box 33 on the conveying belt 32 is moved upward, and in the moving process, the PVC film waste fragments pushed by the screen 15 are received, and then continue to move upward, and when reaching the inclined plate 37 area, the top block 35 contacts the inclined plate 37. Since the elastic strength of the torsional spring 34 is greater than that of the first spring 39, the top block 35 will extrude the inclined plate 37 and the receiving plate 36 to move leftward along the guide frame 38. At this time, the first spring 39 is compressed. When the return box 33 passes through the inclined plate 37 area, the inclined plate 37 and the receiving plate 36 will move rightward along the guide frame 38 under the reset action of the first spring 39. When the return box 33 moves to the limiting rod 41, since the elastic strength of the second spring 42 is greater than that of the torsional spring 34, the return box 33 will be tilted to the receiving plate 36 under the extrusion action of the limiting rod 41. At this time, the torsional spring 34 is deformed, and the PVC film waste fragments received in the return box 33 will also be poured on the receiving plate 36, and then slide to the cutter 25 again under the guidance of the receiving plate 36, and then enter the crushing roller 7 again for crushing after being cut by the cutter 25, so as to achieve the effect of secondary crushing of the waste material that is not completely crushed, and improve the continuity and completeness of the crushing process. When the return box 33 rotates to the limit, the return box 33 will extrude the limiting rod 41 to slide upward along the guide rod 40. At this time, the second spring 42 is compressed. When the return box 33 continuously moves through the limiting rod 41, the limiting rod 41 will move downward under the reset action of the second spring 42. In this way, under the continuous return transportation of the return box 33, the PVC film waste that is not completely crushed can be continuously conveyed to the cutter 25 for cutting and crushing again, so as to improve the crushing effect.

[0046] The above described embodiments only express the preferred embodiments of the present application, which are described in more detail and in more specifically, but can not be understood as the limitation of the patent scope of the present application. It should be noted that for the ordinary skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A PVC film waste crushing and melting device, characterized in that, The components include a support frame (1), a melting furnace (2), a melter (3), a separator filter plate (4), a crushing shell (5), a crushing motor (6), a crushing roller (7), a spur gear (8), a conveying pipe (10), a rotating disc (11), a connecting rod (18), a push rod (19), a hydraulic cylinder (20), a piston rod (21), a push rod (22), a fixing rod (23), a rotating frame (24), and a cutter (25). The melting furnace (2) is fixedly connected to the left side of the support frame (1). The melter (3) is installed on the top of the melting furnace (2). The separator filter plate (4) is installed inside the melting furnace (2). The crushing shell (5) is installed inside the support frame (1). A crushing motor (6) is installed on the rear side. A crushing roller (7) is installed on the output shaft of the crushing motor (6). Another crushing roller (7) is rotatably installed inside the crushing housing (5). Spur gears (8) are fixedly connected to both crushing rollers (7). The two spur gears (8) mesh with each other. The crushing housing (5) is connected to the melting furnace (2) through a conveying pipe (10) and they communicate with each other. A rotating disk (11) is fixedly installed at the front end of the left crushing roller (7). A connecting rod (18) is fixedly installed at the eccentric part of the rotating disk (11). A push rod (19) is rotatably connected to the front end of the connecting rod (18). A hydraulic cylinder (20) is installed on the front side of the crushing housing (5). 0) A piston rod (21) is slidably installed inside the hydraulic cylinder (20). A push rod (19) is inserted into the hydraulic cylinder (20). A push rod (22) is slidably connected to the upper part of the piston rod (21). A fixed rod (23) is fixedly installed on the upper front side of the crushing shell (5). A rotating frame (24) is rotatably connected to the fixed rod (23). The push rod (22) is slidably in contact with the bottom right side of the rotating frame (24). Cutters (25) are slidably installed on both sides of the rotating frame (24). Guide rails (26) are fixedly connected to the upper left and right sides of the rear side of the crushing shell (5). Both cutters (25) slide on the corresponding guide rails (26). The two cutters (25) slide on the corresponding guide rails (26). (26) are all fixedly connected with tension springs (27); it also includes a fixed seat (12), a wedge rod (13), a return spring (14) and a screen (15). A fixed seat (12) is fixedly installed on the lower front side of the crushing shell (5). A wedge rod (13) is slidably connected on the fixed seat (12). When the rotating disk (11) rotates, it intermittently squeezes the wedge rod (13) to move down. A return spring (14) is connected between the wedge rod (13) and the fixed seat (12). A screen (15) is rotatably connected to the lower part of the crushing shell (5). The screen (15) is located below the two crushing rollers (7). The front side of the screen (15) is slidably connected to the lower part of the wedge rod (13).It also includes a connecting rod (18), a push rod (19), a hydraulic cylinder (20), a piston rod (21), a push rod (22), a fixed rod (23), a rotating frame (24), a cutter (25), a guide rail (26), a tension spring (27), a full gear (28), a pulley (29), a flat belt (30), a rotating shaft (31), a conveyor belt (32), a return box (33), a torsion spring (34), a top block (35), a receiving plate (36), an inclined plate (37), a guide frame (38), a first spring (39), a guide rod (40), a limit rod (41), and a second spring (42), with the front end of the right crushing roller (7) fixed. A full gear (28) is installed, and a pulley (29) is rotatably installed on the upper front side of the crushing shell (5). The pulley (29) is located to the right of the full gear (28). Another full gear (28) is fixedly installed on the pulley (29). The two full gears (28) mesh with each other. A rotating shaft (31) is rotatably connected to the lower right side of the bracket (1). Another pulley (29) is fixedly installed at the front end of the rotating shaft (31). The two pulleys (29) are driven by a flat belt (30). Another rotating shaft (31) is also rotatably installed on the upper right side of the bracket (1). A conveyor belt (32) is wound between the two rotating shafts (31). The conveyor belt (32) is spaced apart. Multiple return boxes (33) are installed in a uniform rotating manner. Each return box (33) is connected to the conveyor belt (32) by a torsion spring (34). Top blocks (35) are fixedly installed on the front and rear sides of each return box (33). A receiving plate (36) is slidably installed on the top of the crushing shell (5). The top of the receiving plate (36) is inclined with the left side lower than the right side. Inclined plates (37) are fixedly connected to the front and rear sides of the receiving plate (36). Guide frames (38) are fixedly installed on the front and rear sides of the upper part of the crushing shell (5). The receiving plate (36) is slidably connected to the guide frame (38). A first spring (39) is connected between the receiving plate (36) and the guide rod (40). Guide rods (40) are fixedly installed on both sides of the top right of the bracket (1). A limit rod (41) is slidably connected between the two guide rods (40). When the return box (33) moves upward, it will contact the limit rod (41). A second spring (42) is fixedly connected between the limit rod (41) and the corresponding guide rod (40). When the return box (33) moves to the area of ​​the inclined plate (37), the top block (35) contacts the inclined plate (37). The top block (35) will squeeze the inclined plate (37) and the receiving plate (36) to move to the left along the guide frame (38). The return box (33) will tilt towards the receiving plate (36) under the squeezing action of the limit rod (41).

2. The PVC film waste crushing and melting device according to claim 1, characterized in that, It also includes scrapers (9), and two scrapers (9) are fixedly installed inside the crushing shell (5), with both scrapers (9) located below the corresponding crushing roller (7).

3. The PVC film waste crushing and melting device according to claim 2, characterized in that, It also includes a servo motor (16) and a screw conveyor (17). The servo motor (16) is fixedly installed on the lower part of the crushing shell (5). The screw conveyor (17) is fixedly installed on the output shaft of the servo motor (16). The screw conveyor (17) is located below the screen (15) and inside the conveying pipe (10).

4. The PVC film waste crushing and melting device according to claim 3, characterized in that, It also includes a mixing motor (43) and a stirring rod (44). The mixing motor (43) is fixedly installed on the right side of the melting furnace (2), and the stirring rod (44) is fixedly installed on the output shaft of the mixing motor (43). The stirring rod (44) is located inside the melting furnace (2).

5. The PVC film waste crushing and melting device according to claim 4, characterized in that, It also includes a transmitter (45), which is fixedly installed on the top left side of the bracket (1).

6. The PVC film waste crushing and melting device according to claim 5, characterized in that, The elastic strength of the torsion spring (34) is greater than that of the first spring (39), and the elastic strength of the second spring (42) is greater than that of the torsion spring (34).

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