CN120461635B - PVC membrane waste material smashing and melting device - Google Patents

Abstract

This invention relates to the field of PVC film waste crushing and treatment technology, and more particularly to a PVC film waste crushing and melting device. The invention provides a PVC film waste crushing and melting device, comprising a support frame, a melting furnace, a melter, a separator filter plate, and a crushing shell. The melting furnace is fixedly connected to the left side of the support frame, the melter is installed on the top of the melting furnace, the separator filter plate is installed inside the melting furnace, and the crushing shell is installed inside the support frame. The two sets of crushing rollers of this invention rotate in opposite directions via meshing spur gears, generating a high-efficiency shearing force to rapidly crush the waste. A scraper cleans the roller surface in real time to prevent material adhesion, ensuring stable crushing efficiency. Furthermore, under the linkage of the rotating disc and the hydraulic cylinder structure, the cutter reciprocates to cut large pieces of waste, preventing large pieces of waste from getting stuck on the crushing rollers and avoiding problems such as clogging and entanglement between the roller teeth.

Description

PVC membrane waste material smashing and melting device

Technical Field

The invention relates to the technical field of PVC (polyvinyl chloride) film waste smashing and processing, in particular to a PVC film waste smashing and melting device.

Background

In the PVC film production process, a large amount of irregular massive waste or coiled waste films can be generated due to the process limitations of links such as raw material cutting, leftover material recycling and the like. These waste materials, however, PVC film waste materials are flexible in texture and large in volume, and if they are directly fed into a conventional pulverizing and melting treatment system, they are often not completely broken due to insufficient shearing force when fed into a pulverizing roll. Incompletely crushed chips (especially, rolled waste film) are easily wound on the surface of the crushing roller, causing the gap between the roller teeth to be blocked, and reducing the crushing efficiency. Meanwhile, the wound scraps can increase equipment load, so that the motor is overheated and even stopped, and continuous production is seriously affected.

At present, the problems that the size of waste is reduced by pre-cutting or manual sorting in the industry is mostly adopted, but the manual intervention cost is high and potential safety hazards exist, the pre-crushing cutter set is additionally arranged on part of equipment, the structure is complex, the cutting force is insufficient, and the problems of roller gap blocking and winding are still difficult to avoid.

Therefore, there is a need to develop a PVC membrane waste crushing and melting device to solve the above problems.

Disclosure of Invention

In order to overcome the defects, the invention provides a PVC film waste smashing and melting device.

The technical scheme is that the PVC film waste smashing and melting device comprises a support, a melting furnace, a melting device, a separation filter plate, a smashing shell, a smashing motor, smashing rollers, spur gears, conveying pipes, rotating discs, connecting rods, push rods, hydraulic cylinders, piston rods, ejector rods, fixing rods, rotating frames and cutters, wherein the melting furnace is fixedly connected to the left side of the support, the melting device is installed at the top of the melting furnace, the separation filter plate is installed in the melting furnace, the smashing shell is installed in the support, the smashing motor is installed on the rear side of the smashing shell, the smashing rollers are installed on output shafts of the smashing motor, the other smashing roller is rotatably installed in the smashing shell, the spur gears are fixedly connected to the two smashing rollers, the two spur gears are meshed with each other, the smashing shell and the melting furnace are connected through the conveying pipes and communicated, the rotating discs are fixedly arranged at the front ends of the left side smashing rollers, the connecting rods are fixedly installed at the eccentric positions of the rotating discs, the push rods are rotatably connected to the front ends of the connecting rods, the hydraulic cylinders are installed on the front sides of the hydraulic cylinders, the piston rods are installed in a sliding mode inside the hydraulic cylinders, the push rods are inserted into the inside of the hydraulic cylinders, the ejector rods are slidably connected to the upper portions of the smashing shell, the fixing rods are fixedly arranged on the front sides of the smashing shell, the rotating frames are rotatably connected to the sliding frames, the sliding frames are fixedly connected to the two sliding rails on the two sides of the sliding rails, and the sliding rails are correspondingly connected to the two sides of the rotating frames, and the two sliding frames are fixedly and connected to the two sides.

Further, the grinding device also comprises a scraping plate, wherein two scraping plates are fixedly arranged in the grinding shell, and the two scraping plates are positioned below the corresponding grinding roller.

Further, still including fixing base, wedge pole, reset spring and screen cloth, crushing casing front side lower part fixed mounting has the fixing base, and sliding connection has the wedge pole on the fixing base, intermittent type extrusion wedge pole moves down when the rotary disk rotates, is connected with reset spring between wedge pole and the fixing base, and the lower part rotates in the crushing casing and is connected with the screen cloth, and the screen cloth is located the below of two crushing rollers, screen cloth front side and wedge pole lower part sliding connection.

Further, the device also comprises a servo motor and a screw conveying rod, wherein the servo motor is fixedly arranged at the lower part of the crushing shell, the screw conveying rod is fixedly arranged on an output shaft of the servo motor, the screw conveying rod is positioned below the screen, and the screw conveying rod is positioned inside the conveying pipe.

Further, still including the connecting rod, the push rod, the hydraulic cylinder body, the piston rod, the ejector pin, the dead lever, the swivel mount, the cutter, the direction slide rail, extension spring, the all gear, the belt pulley, flat belt, the pivot, the conveyer belt, the back flow box, the torsional spring, the kicking block, the joint plate, the hang plate, the leading truck, first spring, the guide bar, gag lever post and second spring, right side crushing roller front end fixed mounting has the all gear, crushing casing front side upper portion rotation installs the belt pulley, the belt pulley is located the all gear right side, fixed mounting has another all gear on the belt pulley, two all gear intermesh, support right side lower part rotation is connected with the pivot, pivot front end fixed mounting has another belt pulley, pass through flat belt transmission between two belt pulleys, support right side upper portion also rotates and installs another pivot, around there being the conveyer belt between two pivots, the interval evenly rotates and installs a plurality of back flow boxes on the conveyer belt, all be connected with the torsional spring between every back flow box and the conveyer belt, the front and back both sides of every back flow box all fixed mounting has the kicking block, the top slidable mounting of crushing casing has the joint plate, the top sliding mounting is left and right side low height board, the belt top is on the guide plate is fixed connection, the guide bar has the fixed connection between the guide bar and the two both sides to the guide bar, the fixed connection has the two sides to support side fixed connection between the guide bar and the guide frame, the front side has the fixed connection to the guide plate.

Further, still include hybrid motor and puddler, melting furnace right side fixed mounting has hybrid motor, and fixed mounting has the puddler on the hybrid motor output shaft, and the puddler is located melting furnace's inside.

Further, the device also comprises a conveyor, and the conveyor is fixedly arranged on the left side of the top of the bracket 1.

Further, the spring strength of the torsion spring is greater than that of the first spring, and the spring strength of the second spring is greater than that of the torsion spring.

The two groups of crushing rollers are meshed through the spur gears and reversely rotate to form high-efficiency shearing force, the waste is crushed rapidly, the scraping plates clean the roller surfaces in real time, the adhesion of materials is avoided, the crushing efficiency is stable, and under the linkage of the rotating disc and the hydraulic cylinder body structure, the cutter is driven to cut the massive waste in a reciprocating manner, so that the massive waste is prevented from being clamped on the crushing rollers, and the problems of blockage and winding between the roller teeth are avoided.

2. According to the invention, the rotary disc drives the screen to periodically rotate and vibrate through the wedge-shaped rod, and the screen is combined with the quick reset of the reset spring, so that high-efficiency screening is realized, the spiral conveying rod accurately conveys qualified crushed aggregates to the melting furnace, manual intervention is reduced, the conveyor belt and the reflux box are driven through the full gear and the flat belt, the large-block waste intercepted by the screen is automatically conveyed back to the cutter area, the secondary treatment and the cutting treatment are realized, and the waste crushing thoroughness is improved.

3. According to the invention, the reflux box automatically topples through the ejector block, the limiting rod and the torsion spring, and is guided by the bearing plate, so that waste which does not reach the standard is ensured to return to the crushing process, and raw material waste is avoided.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

FIG. 2 is a schematic perspective sectional view of the melting furnace, melter and separating filter plate of the present invention.

FIG. 3 is a schematic perspective sectional view of a melting furnace, a pulverizing casing and a transfer pipe according to the present invention.

Fig. 4 is a schematic perspective view of a pulverizing motor, a pulverizing roller and a spur gear according to the present invention.

Fig. 5 is a schematic perspective view of the pulverizing roll, spur gear and scraper of the present invention.

Fig. 6 is a schematic perspective view of the rotating disc, the fixed seat and the wedge-shaped rod according to the present invention.

Fig. 7 is a schematic perspective view of the fixing base, wedge rod and return spring of the present invention.

Fig. 8 is a schematic perspective view of the wedge bar, return spring and screen of the present invention.

Fig. 9 is a schematic perspective sectional structure of the connecting rod, push rod and hydraulic cylinder of the present invention.

Fig. 10 is a schematic perspective view of the piston rod, ejector rod and fixing rod of the present invention.

Fig. 11 is a schematic perspective view of the fixing rod, the rotating frame and the cutter according to the present invention.

Fig. 12 is a schematic perspective view of an all-gear, pulley and flat belt of the present invention.

Fig. 13 is a schematic perspective view of the rotating shaft, the conveyor belt and the reflow box according to the present invention.

Fig. 14 is a schematic perspective view of the reflux drum, torsion spring and top block of the present invention.

Fig. 15 is a schematic perspective view of the bearing plate, inclined plate and guide frame of the present invention.

Fig. 16 is a schematic perspective view of the separator plate, the mixing motor and the stirring rod of the present invention.

Fig. 17 is a schematic perspective view of the frame, crushing shell and conveyor of the present invention.

The device comprises a support 1, a melting furnace 2, a melting device 3, a separation filter plate 4, a crushing shell 5, a crushing motor 6, a crushing roller 7, an 8 straight gear, a scraping plate 9, a conveying pipe 10, a rotary disk 11, a fixed seat 12, a wedge-shaped rod 13, a return spring 14, a screen mesh 15, a servo motor 16, a spiral conveying rod 17, a connecting rod 18, a pushing rod 19, a hydraulic cylinder 20, a piston rod 21, a push rod 22, a fixed rod 23, a rotary frame 24, a cutter 25, a guide slide rail 26, a tension spring 27, a full gear 28, a belt pulley 29, a flat belt 30, a rotary shaft 31, a conveying belt 32, a return box 33, a torsion spring 34, a push block 35, a bearing plate 36, a tilting plate 37, a guide frame 38, a first spring 39, a guide rod 40, a limit rod 41, a second spring 42, a mixed motor 43, a stirring rod 44 and a conveyor 45.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

Examples: 1-11, including a bracket 1, a melting furnace 2, a melter 3, a separation filter plate 4, a crushing shell 5, a crushing motor 6, a crushing roller 7, a spur gear 8, a conveying pipe 10, a rotary disk 11, 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 rotary frame 24 and a cutter 25, wherein the left side of the bracket 1 is fixedly connected with the melting furnace 2 in a bolt manner, the front side of the top of the melting furnace 2 is fixedly provided with the melter 3 for heating and melting PVC film waste, the middle part in the melting furnace 2 is fixedly provided with the separation filter plate 4 for blocking unmelted PVC film waste, the middle part in the bracket 1 is fixedly provided with the crushing shell 5, the rear side of the crushing shell 5 is fixedly provided with the crushing motor 6, the output shaft of the crushing motor 6 is fixedly provided with the crushing roller 7, the right side inside the crushing shell 5 is rotatably provided with the other crushing roller 7, the rear sides of the two crushing rollers 7 are fixedly connected with spur gears 8, the two spur gears 8 are meshed with each other, the crushing shell 5 and the melting furnace 2 are connected and communicated through a conveying pipe 10, the front end of the left side crushing roller 7 is fixedly provided with a rotary disk 11, the eccentric part of the rotary disk 11 is fixedly provided with a connecting rod 18, the front end of the connecting rod 18 is rotatably connected with a push rod 19, the upper part of the front side of the crushing shell 5 is fixedly provided with a hydraulic cylinder body 20, the upper part of the hydraulic cylinder body 20 is slidably provided with a piston rod 21, the push rod 19 is inserted into the hydraulic cylinder body 20, hydraulic oil is filled in the hydraulic cylinder body 20, the upper part of the piston rod 21 is slidably connected with a push rod 22, the upper part of the front side of the crushing shell 5 is fixedly provided with a fixed rod 23, the fixed rod 23 is rotatably connected with a rotary frame 24, the push rod 22 is slidably contacted with the right side of the bottom of the rotary frame 24, the cutter 25 is slidably installed on the left side and the right side of the rotating frame 24, the two cutters 25 are slidably connected with the upper portion of the crushing shell 5, the guide slide rails 26 are fixedly connected on the left side and the right side of the upper portion of the rear side of the crushing shell 5, the two cutters 25 slide on the corresponding guide slide rails 26, and the extension springs 27 are fixedly connected between the two cutters 25 and the corresponding guide slide rails 26.

As shown in fig. 5, the crushing shell 5 further comprises two scrapers 9 fixedly arranged in the crushing shell 5, and the two scrapers 9 are positioned below the corresponding crushing roller 7.

As shown in fig. 17, the device further comprises a conveyor 45, and the conveyor 45 is fixedly arranged on the left side of the top of the bracket 1.

When the PVC film waste is required to be recycled, the device can be used for processing, firstly, the conveyor 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 reversely rotate through the meshing relationship of the two spur gears 8 at the rear side, the toothed structures on the surfaces of the two groups of crushing rollers 7 shear and crush the waste, the scraping plate 9 continuously scrapes the scraps attached to the surfaces of the crushing rollers 7 in the crushing process, the scraps are prevented from being adhered to or wound on the crushing rollers 7, the rotary disk 11 at the front end of the left crushing roller 7 rotates along with the crushing rollers 7 in the crushing process, the connecting rod 18 connected with the eccentric position of the rotary disk pushes the push rod 19 to reciprocate up and down, the push rod 19 is inserted into the hydraulic cylinder 20 to extrude hydraulic oil, the driving piston rod 21 drives the ejector rod 22 to rise, the ejector rod 22 is contacted with the right side of the bottom of the rotating frame 24, the rotating frame 24 is forced to rotate around the fixed rod 23, the rotating frame 24 pulls the cutters 25 at the left side and the right side to slide towards the middle along the guide sliding rail 26, the large PVC film waste conveyed by the conveyor 45 is subjected to primary cutting, after the cutting is finished, the push rod 19 moves downwards under the pulling action of the connecting rod 18, the push rod 19 extracts hydraulic oil in the hydraulic cylinder 20, so that the piston rod 21 is forced to drive the ejector rod 22 to move downwards, the ejector rod 22 does not push the rotating frame 24 any more, the stretching spring 27 also resets to enable the cutters 25 to move to the original position, and the cutters 25 push the rotating frame 24 to reversely rotate to the original position, so that the cutters 25 continuously cut the PVC film waste, and the influence of the large PVC film waste on the crushing work of the subsequent crushing roller 7 is avoided.

As shown in fig. 6-8, the pulverizer comprises a fixed seat 12, a wedge rod 13, a return spring 14 and a screen 15, wherein the fixed seat 12 is fixedly arranged at the lower part of the front side of the pulverizing shell 5, the wedge rod 13 is connected onto the fixed seat 12 in a sliding manner, the rotating disc 11 intermittently extrudes the wedge rod 13 to move downwards when rotating, the return spring 14 is connected between the wedge rod 13 and the fixed seat 12, the screen 15 is connected to the lower part of the pulverizing shell 5 in a rotating manner, the screen 15 is positioned below the two pulverizing rollers 7, and the front side of the screen 15 is connected with the lower part of the wedge rod 13 in a sliding manner.

As shown in fig. 8, the pulverizer also comprises a servo motor 16 and a screw conveying rod 17, wherein the servo motor 16 is fixedly arranged at the lower part of the right side of the pulverizing shell 5, the screw conveying rod 17 is fixedly arranged on the output shaft of the servo motor 16, the screw conveying rod 17 is positioned below the screen 15, and the screw conveying rod 17 is positioned inside the conveying pipe 10.

As shown in fig. 9 to 15, the utility model further comprises 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 rotary frame 24, a cutter 25, a guide slide rail 26, a tension spring 27, a full gear 28, a belt pulley 29, a flat belt 30, a rotating shaft 31, a conveyor belt 32, a reflux box 33, a torsion spring 34, a top block 35, a bearing plate 36, a tilting plate 37, a guide frame 38, a first spring 39, a guide rod 40, a limit rod 41 and a second spring 42, wherein the front end of the right crushing roller 7 is fixedly provided with the full gear 28, the upper part of the front side of the crushing shell 5 is rotatably provided with the belt pulley 29, the belt pulley 29 is positioned on the right side of the full gear 28, the belt pulley 29 is fixedly provided with another full gear 28, the two full gears 28 are meshed with each other, the lower part of the right side of the bracket 1 is rotatably connected with the rotating shaft 31, the front end of the rotating shaft 31 is fixedly provided with another belt pulley 29, the upper part of the right side of the bracket 1 is also rotatably provided with another rotating shaft 31 through a flat belt 30, a conveyor belt 32 is wound between the two rotating shafts 31, a plurality of backflow boxes 33 are uniformly rotatably arranged on the conveyor belt 32 at intervals, torsion springs 34 are connected between each backflow box 33 and the conveyor belt 32, top blocks 35 are fixedly arranged on the front side and the rear side of each backflow box 33, a bearing plate 36 is slidably arranged on the top of the crushing shell 5, the top of the bearing plate 36 is in a left-low right-high inclined shape, inclined plates 37 are fixedly connected on the front side and the rear side of the bearing plate 36, guide frames 38 are fixedly arranged on the front side and the rear side of the upper part of the crushing shell 5, guide frames 38 are slidably connected with the bearing plate 36, a first spring 39 is connected between the bearing plate 36 and the guide rods 40, guide rods 40 are fixedly arranged on the front side and the rear side of the right side of the top of the bracket 1, a limit rod 41 is slidably connected between the two guide rods 40, the reflux box 33 contacts with the limiting rod 41 when moving upwards, the limiting rod 41 and the corresponding guide rod 40 are fixedly connected with the second springs 42, the elastic strength of the torsion springs 34 is greater than that of the first springs 39, and the elastic strength of the second springs 42 is greater than that of the torsion springs 34.

As shown in fig. 16, the melting furnace further comprises a mixing motor 43 and a stirring rod 44, wherein the mixing motor 43 is fixedly arranged on the right side of the melting furnace 2, the stirring rod 44 is fixedly arranged on an output shaft of the mixing motor 43, and the stirring rod 44 is positioned in the melting furnace 2.

When the rotary disk 11 rotates, the rotary disk 11 moves down the intermittent extrusion wedge rod 13, then the wedge rod 13 is reset and lifted under the action of the reset spring 14, so that intermittent reciprocating lifting movement of the wedge rod 13 is realized, the screen 15 is driven to intermittently rotate clockwise when the wedge rod 13 is intermittently lifted, so that the fragments of the uncut PVC film waste on the screen 15 are pushed aside, the screened fragments are leaked to the screw conveying rod 17, the screw conveying rod 17 is driven to rotate by starting the servo motor 16, the fragments are conveyed into the melting furnace 2 through the conveying pipe 10, the melting device 3 heats the fragments to a molten state, the stirring rod 44 is driven by the mixing motor 43 to stir and homogenize the molten liquid, the molten liquid flows to the next process after being filtered by the separating filter plate 4, and the crushing and melting work of the PVC film waste is finished.

The PVC film waste fragments which do not pass through the screen 15 enter the right side of the bracket 1 under the stirring of the screen 15, when the right crushing roller 7 rotates, the right crushing roller 7 drives the front end all gear 28 to rotate, and drives the belt pulley 29 to rotate through the all gear 28 on the belt pulley 29, further drives the rotating shaft 31 and the conveying belt 32 to operate under the transmission of the flat belt 30, the reflux box 33 on the conveying belt 32 moves upwards along with the rotation, the PVC film waste fragments stirred by the screen 15 are received during the movement, further move upwards, when the PVC film waste fragments move to the inclined plate 37, the top block 35 contacts the inclined plate 37, because the elastic strength of the torsion spring 34 is larger than that of the first spring 39, the top block 35 presses the inclined plate 37 and the bearing plate 36 to move leftwards along the guide frame 38, at the moment, the first spring 39 is compressed, when the reflux box 33 passes through the inclined plate 37, when the inclined plate 37 and the receiving plate 36 move rightwards along the guide frame 38 under the reset action of the first spring 39 and reset, and the reflux box 33 moves to the position of the limit rod 41, as the elastic strength of the second spring 42 is larger than that of the torsion spring 34, the reflux box 33 tilts towards the receiving plate 36 under the extrusion action of the limit rod 41, the torsion spring 34 deforms at the moment, PVC film waste fragments held in the reflux box 33 are also tilted on the receiving plate 36 and then slide to the cutter 25 again under the guide of the receiving plate 36, and enter the crushing roller 7 again for crushing through the cutting of the cutter 25, thereby achieving the effect of secondary crushing treatment of incompletely crushed waste, improving the consistency and thoroughness of the crushing treatment, when the reflux box 33 tilts and rotates to the limit, the reflux box 33 extrudes the limit rod 41 upwards along the guide rod 40, at the moment, the second spring 42 is compressed, and when the reflux box 33 continuously moves through the limit rod 41, the limit rod 41 moves downwards to reset under the reset action of the second spring 42, so that the PVC film waste which is not crushed thoroughly can be continuously conveyed to the cutter 25 again for cutting and crushing under the continuous reflux transportation of the reflux box 33, and the crushing effect is improved.

The foregoing examples have shown only the preferred embodiments of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that modifications, improvements and substitutions can be made by those skilled in the art without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (6)

1. The utility model provides a PVC membrane waste material smashes fusion device which characterized in that, including support (1), melting furnace (2), melter (3), separation filter plate (4), smash casing (5), smash motor (6), smash roller (7), spur gear (8), conveyer pipe (10), rotary disk (11), connecting rod (18), push rod (19), hydraulic cylinder body (20), piston rod (21), ejector pin (22), dead lever (23), Rotating frame (24) and cutter (25), support (1) left side fixedly connected with melting furnace (2), melting furnace (2) top-mounted has melting ware (3), melting furnace (2) internally mounted has separation filter plate (4), support (1) internally mounted has crushing casing (5), crushing motor (6) are installed to crushing casing (5) rear side, install crushing roller (7) on crushing motor (6) output shaft, crushing casing (5) internally rotating installs another crushing roller (7), all fixedly connected with spur gear (8) on two crushing rollers (7), two spur gear (8) intermesh, be connected and intercommunication between crushing casing (5) and melting furnace (2) through conveyer pipe (10), the front end fixed mounting of left side crushing roller (7) has rotary disk (11), rotary disk (11) eccentric department fixed mounting has connecting rod (18), connecting rod (18) front end rotation is connected with push rod (19), hydraulic cylinder (20) are installed to crushing casing (5) front side, hydraulic cylinder (20) inside sliding mounting has piston rod (21), inside sliding connection in push rod (19) insert inside of cylinder (20), hydraulic cylinder (22) sliding connection has piston rod (22), the grinding shell (5) is characterized in that a fixed rod (23) is fixedly arranged on the upper part of the front side of the grinding shell (5), a rotating frame (24) is rotationally connected to the fixed rod (23), a push rod (22) is in right sliding contact with the bottom of the rotating frame (24), cutters (25) are slidably arranged on two sides of the rotating frame (24), guide slide rails (26) are fixedly connected to the left side and the right side of the upper part of the rear side of the grinding shell (5), the two cutters (25) slide on the corresponding guide slide rails (26), a tension spring (27) is fixedly connected between the two cutters (25) and the corresponding guide slide rails (26), and the grinding shell further comprises a fixing seat (12), Wedge rod (13), reset spring (14) and screen cloth (15), smash casing (5) front side lower part fixed mounting has fixing base (12), sliding connection has wedge rod (13) on fixing base (12), rotating disk (11) rotation time intermittent type extrusion wedge rod (13) moves down, be connected with reset spring (14) between wedge rod (13) and fixing base (12), smash casing (5) interior lower part rotation is connected with screen cloth (15), screen cloth (15) are located the below of two crushing rollers (7), screen cloth (15) front side and wedge rod (13) lower part sliding connection, still include connecting rod (18), push rod (19), the, the hydraulic cylinder body (20), a piston rod (21), a push rod (22), a fixed rod (23), a rotating frame (24), a cutter (25), a guide sliding rail (26), a tension spring (27), an all-gear (28), a belt pulley (29), a flat belt (30), a rotating shaft (31), a conveyor belt (32), a reflux box (33), a torsion spring (34), a push block (35), a bearing plate (36), an inclined plate (37), a guide frame (38), a first spring (39), a guide rod (40), Stop lever (41) and second spring (42), all gear (28) is fixed fixedly in front end of right side crushing roller (7), install belt pulley (29) in rotation of crushing shell (5) front side upper portion, belt pulley (29) are located all gear (28) right side, fixedly install another all gear (28) on belt pulley (29), two all gear (28) intermesh, support (1) right side lower part rotation is connected with pivot (31), another belt pulley (29) is fixed in front end of pivot (31), pass through flat belt (30) transmission between two belt pulleys (29), still rotate and install another pivot (31) on support (1) right side upper portion, wind conveyer belt (32) between two pivot (31), evenly rotate and install a plurality of back flow box (33) at interval on conveyer belt (32), all be connected with torsional spring (34) between every back flow box (33), the front and back both sides of every back flow box (33) all are fixedly installed top piece (35), top sliding mounting of crushing shell (5) has bearing plate (36), top sliding mounting (36) is in front and back side (36) is fixed in front and back side upper portion (37) is fixed in front and is connected with the front and back side (37), the support plate (36) is connected with the guide frame (38) in a sliding mode, a first spring (39) is connected between the support plate (36) and the guide rod (40), the guide rods (40) are fixedly installed on the two sides of the right of the top of the support frame (1), a limiting rod (41) is connected between the two guide rods (40) in a sliding mode, the limiting rod (41) is contacted when the backflow box (33) moves upwards, a second spring (42) is fixedly connected between the limiting rod (41) and the corresponding guide rod (40), when the backflow box (33) moves to the inclined plate (37), the top block (35) contacts the inclined plate (37), the top block (35) moves left along the guide frame (38) to extrude the inclined plate (37) and the support plate (36), and the backflow box (33) is inclined towards the direction of the support plate (36) under the extrusion action of the limiting rod (41).

2. The PVC film waste smashing and melting device according to claim 1, further comprising scraping plates (9), wherein two scraping plates (9) are fixedly installed inside the smashing shell (5), and the two scraping plates (9) are located below the corresponding smashing rollers (7).

3. The PVC film waste smashing and melting device according to claim 2, further comprising a servo motor (16) and a spiral conveying rod (17), wherein the servo motor (16) is fixedly installed on the lower portion of the smashing shell (5), the spiral conveying rod (17) is fixedly installed on an 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 inside the conveying pipe (10).

4. A PVC film waste crushing and melting apparatus as claimed in claim 3, further comprising a mixing motor (43) and a stirring rod (44), wherein 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 melting furnace (2).

5. The PVC film waste smashing and melting device according to claim 4, further comprising a conveyor (45), wherein the conveyor (45) is fixedly arranged on the left side of the top of the bracket (1).

6. The PVC film waste pulverizing and melting apparatus of claim 5, wherein the spring strength of the torsion spring (34) is greater than the spring strength of the first spring (39), and the spring strength of the second spring (42) is greater than the spring strength of the torsion spring (34).