A PVC film calender waste recovery device

Abstract

The application discloses a PVC film calendering machine waste recycling equipment, and relates to the PVC film recycling technical field.The PVC film calendering machine waste recycling equipment comprises a recycling body, a conveying rotating shaft rotating in the recycling body through a bearing, a cleaning mechanism arranged on the left side of the recycling body, impurity removal arc plates arranged on the upper and lower sides of the inside of a soaking tank, a smoothing mechanism arranged on the left side of the upper part of the recycling body, smoothing supports, smoothing rotating rollers rotating on the upper and lower sides of the inside of the smoothing supports through bearings, and a slitting mechanism arranged on the right side of the upper part of the recycling body.The PVC film calendering machine waste recycling equipment can soak and wash the waste film through the cleaning mechanism of the recycling body, clean the adhered dust and impurities, heat and soften the waste film, and then perform shaping and smoothing, and the reciprocating lifting slitting mechanism can slit and crush the smoothed and flattened waste film, so that the efficiency of subsequent recycling and processing is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of PVC film recycling, in particular to a PVC film calender waste recycling equipment capable of slitting. BACKGROUND

[0002] The PVC film refers to a process of recycling waste generated in the production process of a PVC film calender, in the production process of the PVC film calender, some waste such as products not meeting the expected quality requirements, leftover materials, cuttings and the like are generated, if the waste is directly discarded, not only resource waste is caused, but also environmental pollution is caused, and the PVC film waste has conditions such as dirt, wrinkles and damage, and needs to be slit and broken to facilitate subsequent recycling and processing.

[0003] The utility model discloses a kind of PVC film waste recycling equipment, and the rotation speed of broken wheel one and broken wheel two is faster by the transmission of worm and worm wheel and the transmission of gear, so that PVC film can be broken faster, improve the recovery efficiency of PVC film, the PVC film after broken treatment is heated, the PVC film is preheated, then the PVC film in pile is extruded by electric push rod, and the PVC film is formed into block.

[0004] The utility model discloses a kind of PVC film calender waste recycling device, and the leftover material generated by calender is pressed and guided to be conveyed to feeding roller by pressing roller, then is sent into cutting roller to cut, crush, finally is recycled to recovery bucket, using this kind of structure design, leftover material can be conveniently crushed, without additional crushing equipment.

[0005] But the above-mentioned recycling device for PVC film waste still has the following problems in actual use process: although PVC film waste can be recycled by crushing mechanism, such PVC film waste is not recycled at first time, and is easy to stick dust and dirt in the process of standing storage, and then carries impurities when directly broken in recycling, affect the purity of recycled material, and PVC film waste occupies area in recycling due to wrinkles and damage, affect the efficiency of reprocessing.

[0006] Therefore, a PVC film calender waste recycling equipment capable of slitting is proposed to solve the problems in the above-mentioned. SUMMARY

[0007] The application aims to provide a PVC film calender waste recycling equipment that can be divided and cut.

[0008] To achieve the above-mentioned purpose, the application provides the following technical scheme: a PVC film calender waste recycling equipment that can be divided and cut, comprising a recycling body, a conveying shaft rotating in the recycling body through bearings, and a conveying belt connected to the outer wall of the conveying shaft;

[0009] Further comprising: a cleaning mechanism arranged on the left side of the inside of the recycling body, the cleaning mechanism comprising a soaking pool, and the inside of the soaking pool being provided with impurity removal arc plates on the upper and lower sides;

[0010] The upper left side of the recycling body is provided with a smoothing mechanism, and the smoothing mechanism comprises a smoothing support, and the inside of the smoothing support is provided with smoothing rollers rotating on the upper and lower sides through bearings;

[0011] The upper right side of the recycling body is provided with a slitting mechanism, and the slitting mechanism comprises a slitting support, and the inside of the slitting support is provided with a slitting cutter slidingly;

[0012] Preferably, the cleaning mechanism comprises guide rollers, the guide rollers are arranged on the left and right sides of the inside of the soaking pool through bearings, and the inside of the soaking pool is provided with a guide screw rod rotating through bearings on the upper side;

[0013] Preferably, the cleaning mechanism comprises impurity removal scrapers, the middle part of the impurity removal scrapers is threadedly connected to the outer wall of the guide screw rod, and the outer end of the impurity removal scrapers is connected to the upper outer wall of the left and right guide rollers;

[0014] Preferably, the cleaning mechanism comprises a driving gear and a guide gear, the driving gear is arranged in front of the inside of the soaking pool through bearings, the guide gear is fixedly connected to the front shaft of the left and right guide rollers, the driving gear and the guide gear are in meshing relationship, and the shaft of the driving gear and the front end of the guide screw rod are connected through a first belt pulley assembly.

[0015] Preferably, the cleaning mechanism comprises a guide slide rod, the lower end of the guide slide rod is elastically and slidably connected between the upper and lower impurity removal arc plates, the top end of the guide slide rod is fixedly connected to the upper middle part of the soaking pool, and the connecting parts of the symmetrically arranged impurity removal arc plates are used to fit the PVC film for cleaning.

[0016] Preferably, the flattening mechanism comprises a coupling generator fixedly installed on the front and rear sides of the flattening support, and a magnetic induction coil is arranged in the coupling generator, and a coupling magnetic plate is slidingly arranged in the coupling generator, and the coupling magnetic plate is screw-connected to the end of the upper flattening roller, and the right end of the coupling magnetic plate is slidingly arranged on the bottom surface of the coupling generator through a fixedly connected positioning slide rod, and the front end of the lower flattening roller is connected to the front end of the conveying shaft through a second belt pulley assembly.

[0017] Preferably, the flattening mechanism comprises an electric heater fixedly installed on the upper flattening support, and the electric heater is connected to the magnetic induction coil in the coupling generator, and the magnetic induction coil is reciprocally moved by the coupling magnetic plate to cut the coil current, so as to supply power to the electric heater for heating.

[0018] The flattening mechanism comprises a gas supply cylinder fixedly installed on the top of the coupling generator, and a gas supply piston is slidingly arranged in the gas supply cylinder, and the right end of the gas supply piston is fixedly connected to the coupling magnetic plate in the coupling generator, and the left end of the gas supply piston is connected to the electric heater through a one-way exhaust, and a one-way air inlet valve hole is formed in the top of the gas supply piston.

[0019] Preferably, the slitting mechanism comprises a servo motor fixedly installed below the slitting support, and the servo motor is fixedly connected to the bottom end of the reciprocating threaded rod, and the slitting mechanism comprises a resilient contactor fixedly arranged in the slitting cutter, and the bottom end of the resilient contactor is lower than the bottom end of the slitting cutter, so that the module is separated from the slitting cutter by the resilient contactor to prevent sticking after the film material is cut by the slitting cutter.

[0020] Preferably, the reciprocating threaded rods of the slitting mechanism are rotatably arranged on the outer sides of the slitting support through bearings, and the top ends of the symmetrically arranged reciprocating threaded rods are connected to each other through a third belt pulley assembly.

[0021] Preferably, the slitting mechanism comprises a guide slide block, and the guide slide block is screw-connected to the outer walls of the front and rear reciprocating threaded rods, and the inner end of the guide slide block is slidingly arranged in the slitting support, and the inner ends of the symmetrically arranged guide slide blocks are fixedly connected to the outer ends of the slitting cutters, and the reciprocating lifting of the slitting cutters is used for slitting and crushing the PVC film.

[0022] Compared with the prior art, the beneficial effects of the application are: the PVC film slitting machine waste recovery equipment can clean the waste film by the cleaning mechanism of the recovery body, clean the sticky dust and dirt, then heat and soften it for shaping and smoothing, and the reciprocating cutting mechanism can cut and crush the smoothed and flattened waste film, so as to improve the efficiency of subsequent recovery processing.

[0023] 1. The driving gear drives the guide gear connected on the left and right sides and the guide roller to rotate counterclockwise, so that the waste film is pulled to the bottom surface of the guide roller and then enters the inside of the soaking pool for cleaning and dust removal, avoiding the influence of sticky dust and dirt on subsequent recovery.

[0024] The waste film passes between the upper and lower impurity scraping plates in the soaking pool, and the impurity scraping plates connected with the guide slide rod are always in contact with the waste film to scrape off the dirt adhering to the surface of the waste film, avoiding affecting the subsequent cutting and recovery operation.

[0025] The driving gear drives the guide screw rod to rotate through the first belt pulley assembly, and then the guide screw rod drives the threaded impurity scraping plate to move in the front and back directions to clean the guide roller connected thereto, avoiding the influence of dirt adhering to the surface of the guide roller on the conveying work of the waste film.

[0026] 2. The conveying shaft drives the smoothing roller to rotate through the second belt pulley assembly, the waste film is guided between the upper and lower smoothing rollers, and the coupled magnetic plate cuts the magnetic sensing coil in the coupled power generator reciprocatingly to supply power to the heating coil in the electric heater, while the coupled magnetic plate drives the air supply cylinder to supply air to the electric heater, and then the heated air is supplied to the inside of the heat softener to blow to the cleaned waste film, so that the waste film is softened and flattened by the smoothing roller, avoiding misalignment in the subsequent cutting process and affecting the processing efficiency.

[0027] 3. The servo motor drives the reciprocating screw rod to rotate, and the guide slider connected with the reciprocating screw rod drives the cutting tool and the elastic stopper in the cutting support to reciprocate, and then the cutting tool cuts and crushes the processed waste film, and the elastic stopper at the bottom can separate the waste film from the cutting tool to prevent the waste film from adhering to the cutting tool, so as to improve the efficiency of subsequent recovery processing. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a whole three-dimensional structure schematic diagram of the application;

[0029] Figure 2 It is a three-dimensional structure schematic diagram of the cutting mechanism of the application;

[0030] Figure 3The schematic view of the guide rotating roller installation structure of the present application;

[0031] Figure 4 The schematic view of the guide rotating roller installation structure of the present application Figure 3 The schematic view of the enlarged structure at A in the present application;

[0032] Figure 5 The schematic view of the guide rotating roller and the impurity removal scraper connection structure of the present application;

[0033] Figure 6 The schematic view of the guide rotating roller installation structure of the present application Figure 5 The schematic view of the enlarged structure at B in the present application;

[0034] Figure 7 The schematic view of the impurity removal arc plate of the present application;

[0035] Figure 8 The schematic view of the smoothing mechanism of the present application;

[0036] Figure 9 The schematic view of the coupling generator and the friction heat block installation structure of the present application;

[0037] Figure 10 The schematic view of the slitting cutter installation structure of the present application;

[0038] Figure 11 The schematic view of the coupling magnetic plate and the air supply cylinder installation structure of the present application.

[0039] In the figure: 1, the recycling machine body; 2, the conveying rotating shaft; 3, the conveying track; 4, the immersion washing pool; 5, the impurity removal arc plate; 6, the smoothing support; 7, the smoothing rotating roller; 8, the slitting support; 9, the slitting cutter; 10, the guide rotating roller; 11, the guide screw rod; 12, the impurity removal scraper; 13, the driving gear; 14, the guide gear; 15, the first pulley assembly; 16, the guide sliding rod; 17, the coupling generator; 18, the second pulley assembly; 19, the electric heater; 20, the servo motor; 21, the elastic contactor; 22, the air supply piston; 23, the reciprocating screw rod; 24, the third pulley assembly; 25, the guide sliding block; 26, the magnetic sensing coil; 27, the heat supply softener; 28, the coupling magnetic plate; 29, the positioning sliding rod; 30, the air supply cylinder. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0041] Please refer to Figures 1-11The application provides the following technical scheme:

[0042] Embodiment 1: In order to solve the problems existing in the recycling and processing of the existing PVC film waste, the embodiment discloses the following technical scheme, a PVC film calender waste recycling equipment capable of slitting, comprising a recycling body 1, a cleaning mechanism is arranged on the left side in the recycling body 1, the cleaning mechanism comprises a soaking tank 4, and the inside of the soaking tank 4 is provided with impurity removal arc plates 5 on the upper side and the lower side; the cleaning mechanism comprises a guide rotating roller 10, the guide rotating roller 10 is rotatably arranged on the left side and the right side in the inside of the soaking tank 4 through bearings, the cleaning mechanism comprises a driving gear 13 and a guide gear 14, the driving gear 13 is rotatably arranged on the front side in the inside of the soaking tank 4 through a bearing, the guide gear 14 is fixedly connected to the front end shaft of the left guide rotating roller 10 and the right guide rotating roller 10, and the driving gear 13 and the guide gear 14 are meshed with each other, and the shaft of the driving gear 13 is meshed and connected with the front end of a guide threaded rod 11 through a first belt pulley assembly 15.

[0043] As shown in Figure 3 , Figures 5-6 in the process of recycling the PVC film waste, the waste film is pulled into the soaking tank 4 on the left side above the recycling body 1, then the driving gear 13 is driven by a motor, and the left guide gear 14 and the right guide gear 14 and the guide rotating roller 10 meshed with the left guide gear 14 and the right guide gear 14 are driven to rotate counterclockwise, so that the waste film pulled to the bottom surface of the guide rotating roller 10 enters the inside of the soaking tank 4 to be cleaned and dusted, avoiding the influence of adhered dust and dirt on subsequent recycling.

[0044] The waste film cleaned by soaking and dusting passes between the impurity removal scrapers 12 on the upper side and the lower side in the inside of the soaking tank 4, the impurity removal scrapers 12 elastically connected by guide sliding rods 16 are always in contact with the waste film, so as to scrape off the dirt adhered to the surface of the waste film, avoiding the influence on subsequent slitting and recycling operations.

[0045] A guide threaded rod 11 is rotatably arranged on the upper side in the inside of the soaking tank 4; the cleaning mechanism comprises an impurity removal scraper 12, the middle part of the impurity removal scraper 12 is threadedly connected to the outer wall of the guide threaded rod 11, and the outer end of the impurity removal scraper 12 is connected to the upper outer wall of the left guide rotating roller 10 and the right guide rotating roller 10; the cleaning mechanism comprises a guide sliding rod 16, the lower end of the guide sliding rod 16 is elastically and slidingly connected between the upper and lower impurity removal arc plates 5, the top end of the guide sliding rod 16 is fixedly connected to the upper middle part of the soaking tank 4, and the connecting parts of the symmetrically arranged impurity removal arc plates 5 are used for abutting the PVC film to realize cleaning.

[0046] As shown in Figure 5As shown, the drive gear 13 drives the meshing connection of the guide threaded rod 11 through the first belt pulley assembly 15 to rotate, and then the guide threaded rod 11 drives the threaded connection of the impurity scraping plate 12 to move in the front and back directions, so as to clean the meshing connection of the guide rotating roller 10, and avoid the influence of the impurities adhered to the surface of the guide rotating roller 10 on the conveying work of the waste film.

[0047] In order to solve the problems existing in the recycling process of the existing PVC film waste, the technical scheme of the embodiment is disclosed as follows: a conveying shaft 2 is rotatably arranged in the recycling body 1, and a conveying track 3 is meshingly connected to the outer wall of the conveying shaft 2; the flattening mechanism comprises a coupling generator 17 fixedly installed on the front and rear sides of a flattening support 6, and a magnetic induction coil 26 is arranged in the coupling generator 17, and a coupling magnetic plate 28 is slidably arranged in the coupling generator 17, and the coupling magnetic plate 28 is threadedly connected to the end of an upper flattening rotating roller 7, and the right end of the coupling magnetic plate 28 is slidably arranged on the bottom surface of the coupling generator 17 through a fixedly connected positioning sliding rod 29, and the front end of a lower flattening rotating roller 7 is meshingly connected to the front end of the conveying shaft 2 through a second belt pulley assembly 18.

[0048] The upper part of the flattening support 6 of the flattening mechanism is fixedly installed with an electric heater 19, and the electric heater 19 is connected to the magnetic induction coil 26 in the coupling generator 17, and the magnetic induction coil 26 is cut by the reciprocating movement of the coupling magnetic plate 28 to realize the cutting of the coil current, so as to supply power to the electric heater 19 to realize heating; the flattening mechanism comprises a gas supply cylinder 30 fixedly installed on the top of the coupling generator 17, and a gas supply piston 22 is slidably arranged in the gas supply cylinder 30, and the right end of the gas supply piston 22 is fixedly connected to the coupling magnetic plate 28 in the coupling generator 17, and the left end of the gas supply piston 22 is connected to the electric heater 19 through a one-way exhaust, and a one-way air inlet valve hole is formed in the top of the gas supply piston 22.

[0049] As shown in Figure 8 , Figure 9 The conveying shaft 2 in the recycling body 1 rotates to meshingly drive the conveying track 3 to convey the waste film, and the flattening rotating roller 7 in the flattening support 6 is driven to rotate by the second belt pulley assembly 18, and then the cleaned waste film is guided between the upper and lower flattening rotating rollers 7, and the upper flattening rotating roller 7 is driven to rotate synchronously, and the reciprocating threaded coupling magnetic plate 28 is driven to reciprocate in the coupling generator 17, and the coupling magnetic plate 28 is limited in the coupling generator 17 by the positioning sliding rod 29 at the bottom to reciprocally cut the magnetic induction coil 26 to generate electricity, and the coupling generator 17 supplies power to the electric heater 19 to make the heating coil in the electric heater 19 heat up to provide heat for the subsequent heating and softening.

[0050] As Figure 11 shown, the reciprocating coupling magnetic plate 28 drives the air supply piston 22 inside the air supply cylinder 30 to move, cooperates with the one-way air inlet valve at the top of the air supply cylinder 30 to realize air intake, and at the same time, the air sucked by the air supply piston 22 is transported to the inside of the electric heater 19 connected through, the heating coil heats the air, so as to be transported to the surface of the waste film by the heat softener 27, so that the waste film is softened and flattened by the flattening roller 7. Avoid dislocation during subsequent slitting process to affect processing efficiency.

[0051] Embodiment 3: In order to solve the problems existing in the recycling process of the existing PVC film waste, the following technical scheme is disclosed in this embodiment. The flattening mechanism is arranged on the upper left side of the recycling body 1, and the flattening mechanism comprises a flattening support 6, and the inside of the flattening support 6 is rotatably provided with a flattening roller 7 on the upper and lower sides through bearings. The slitting mechanism is arranged on the upper right side of the recycling body 1, and the slitting mechanism comprises a slitting support 8, and the inside of the slitting support 8 is slidably provided with a slitting cutter 9. The slitting mechanism comprises a servo motor 20, and the servo motor 20 is fixedly installed below the slitting support 8, and the servo motor 20 is fixedly connected to the bottom end of the reciprocating threaded rod 23. The inside of the slitting cutter 9 comprised by the slitting mechanism is fixedly provided with an elastic contactor 21, and the bottom end of the elastic contactor 21 is lower than the bottom end of the slitting cutter 9. After the film material is cut by the slitting cutter 9, the elastic contactor 21 separates the module from the slitting cutter 9 to prevent sticking.

[0052] The reciprocating threaded rod 23 comprised by the slitting mechanism is rotatably arranged on the outer front and rear sides of the slitting support 8 through bearings, and the top ends of the symmetrically arranged reciprocating threaded rods 23 are connected to each other through the third belt wheel assembly 24. The slitting mechanism comprises a guide sliding block 25, and the guide sliding block 25 is threadedly connected to the outer walls of the front and rear reciprocating threaded rods 23. The inner end of the guide sliding block 25 slides through the inside of the slitting support 8, and the inner ends of the symmetrically arranged guide sliding blocks 25 are fixedly connected to the outer ends of the slitting cutters 9. At the same time, the reciprocating lifting of the slitting cutter 9 is used for cutting and crushing the PVC film.

[0053] As Figures 1-2 , Figure 10As shown, the waste film after flattening and pressing is conveyed by the conveying track 3, the reciprocating threaded rods 23 on the front and back sides of the slitting support 8 are connected by the third top pulley assembly 24, so that the servo motor 20 controls the rotation of the reciprocating threaded rods 23, so that the guide slider 25 threaded with the reciprocating threaded rods 23 drives the slitting cutter 9 inside the slitting support 8 to reciprocate and lift with the elastic contactor 21, the bottom end of the elastic contactor 21 contacts the bottom of the waste film, and then the slitting cutter 9 cuts and crushes the waste film that has been processed, and after the slitting cutter 9 rises, the elastic contactor 21 at the bottom can separate the waste film from the slitting cutter 9, preventing the waste film from sticking to the slitting cutter 9, so as to improve the efficiency of subsequent recycling processing.

[0054] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A slitting PVC film calender waste recovery equipment, comprising a recovery body (1), and a conveying shaft (2) rotating in the recovery body (1) through bearings, and the outer wall of the conveying shaft (2) is engaged with a conveying belt (3); characterized in that Further comprising: The left side of the inside of the recovery body (1) is provided with a cleaning mechanism, and the cleaning mechanism comprises a soaking tank (4), and the inside of the soaking tank (4) is provided with a decontamination arc plate (5) on the upper and lower sides; The left side of the upper side of the recovery body (1) is provided with a smoothing mechanism, and the smoothing mechanism comprises a smoothing support (6), and the inside of the smoothing support (6) is provided with a smoothing roller (7) rotating through bearings on the upper and lower sides; Wherein, the right side of the upper side of the recovery body (1) is provided with a slitting mechanism, and the slitting mechanism comprises a slitting support (8), and the inside of the slitting support (8) is provided with a slitting cutter (9) slidingly; The cleaning mechanism comprises a guide roller (10), and the guide roller (10) is provided on the left and right sides of the inside of the soaking tank (4) through bearings, and the inside of the soaking tank (4) is provided with a guide screw rod (11) rotating through bearings on the upper side; The cleaning mechanism comprises a decontamination scraper (12), and the middle part of the decontamination scraper (12) is threadedly connected to the outer wall of the guide screw rod (11), and the outer end of the decontamination scraper (12) is connected to the upper outer wall of the left and right guide rollers (10); The smoothing mechanism comprises a coupling generator (17) fixedly installed on the front and rear sides of the smoothing support (6), and the inside of the coupling generator (17) is provided with a magnetic induction coil (26), and the inside of the coupling generator (17) is provided with a coupling magnetic plate (28) slidingly, and the inside of the coupling magnetic plate (28) is threadedly connected to the end of the upper smoothing roller (7), and the right end of the coupling magnetic plate (28) is slidingly provided on the bottom surface outside the coupling generator (17) through a fixedly connected positioning slide rod (29), and the front end of the lower smoothing roller (7) is engaged with the front end of the conveying shaft (2) through a second pulley assembly (18).

2. A slittable PVC film calender scrap recovery apparatus according to claim 1, characterized in that: The cleaning mechanism comprises a drive gear (13) and a guide gear (14), and the drive gear (13) is provided in front of the inside of the soaking tank (4) through bearings, and the guide gear (14) is fixedly connected to the front shaft of the left and right guide rollers (10), and the drive gear (13) and the guide gear (14) are engaged with each other, and the shaft of the drive gear (13) and the front end of the guide screw rod (11) are engaged through a first pulley assembly (15).

3. A slittable PVC film calender scrap recovery apparatus according to claim 2, characterized in that: The cleaning mechanism comprises a guide slide rod (16), and the lower end of the guide slide rod (16) is elastically slidingly connected between the decontamination arc plates (5) on the upper and lower sides, and the top end of the guide slide rod (16) is fixedly connected to the upper middle part of the soaking tank (4), and the connection of the symmetrically arranged decontamination arc plates (5) is used to fit the PVC film for cleaning.

4. A slittable PVC film calender scrap recovery apparatus as claimed in claim 1, wherein: The smoothing mechanism comprises an electric heater (19) fixedly installed above a smoothing support (6), the electric heater (19) is connected with a magnetic induction coil (26) inside a coupling generator (17), and the magnetic induction coil (26) is reciprocally moved by a coupling magnetic plate (28) to cut coil current, so as to supply power to the electric heater (19) to realize heating. The smoothing mechanism comprises a gas supply cylinder (30) fixedly installed on the top of the coupling generator (17), a gas supply piston (22) is slidably arranged inside the gas supply cylinder (30), the right end of the gas supply piston (22) is fixedly connected to the coupling magnetic plate (28) inside the coupling generator (17), the left end of the gas supply piston (22) is connected to the electric heater (19) in a one-way exhaust manner, and a one-way air inlet valve hole is formed in the top of the gas supply piston (22).

5. A slittable PVC film calender scrap recovery apparatus as claimed in claim 1, wherein: The slitting mechanism comprises a servo motor (20) fixedly installed below a slitting support (8), the servo motor (20) is fixedly connected to the bottom end of a reciprocating threaded rod (23), the slitting mechanism comprises an elastic contactor (21) fixedly arranged inside a slitting cutter (9), the bottom end of the elastic contactor (21) is lower than the bottom end of the slitting cutter (9), and the elastic contactor (21) separates the module from the slitting cutter (9) to prevent sticking after the slitting cutter (9) cuts the film.

6. A slittable PVC film calender scrap recovery apparatus according to claim 5, characterized in that: The reciprocating threaded rods (23) are rotatably arranged outside the slitting support (8) through bearings, and the top ends of the symmetrically arranged reciprocating threaded rods (23) are connected to each other through a third belt pulley assembly (24).

7. A slittable PVC film calender scrap recovery apparatus according to claim 6, characterized in that: The slitting mechanism comprises a guide slider (25) threadedly connected to the outer walls of the front and rear reciprocating threaded rods (23), the inner end of the guide slider (25) is slidably penetrated into the inside of the slitting support (8), the inner ends of the symmetrically arranged guide sliders (25) are fixedly connected to the outer ends of the slitting cutters (9), and the reciprocating lifting of the slitting cutters (9) is used for slitting and crushing the PVC film.

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