CN216099845U - Film granulation equipment - Google Patents

Abstract

The utility model discloses a film granulation device, which comprises: the device comprises a feeding machine, a compacting machine, an extruder, a water ring granulator, a dehydrator and a feeding dehydration fan; the water ring pelleter includes: the machine frame of ability fixed mounting on the extruder, can the butt joint connecting cylinder of fixed mounting on the extrusion die head of extruder and taking the inlet tube, the feed cylinder of taking mixed discharging pipe sets up in the frame through the displacement device, the fixed back shroud at the feed cylinder rear end is provided with a plurality of back shafts of taking slide bearing, the slide bearing backup pad is fixed in on each slide bearing, the eager grain arbor of being driven by cutting grain drive arrangement installs in the slide bearing backup pad through cutting the grain bearing frame, the end fixed mounting who cuts the grain arbor that is located in the feed cylinder has the eager grain knife rest of taking the eager grain sword, be provided with at least one cylinder in the slide bearing backup pad, the equal fixed connection of the projecting bar of each cylinder is on the feed cylinder. The granulating cutter in the structure can always press against the extrusion surface of the extrusion die head with constant pressure.

Description

Film granulation equipment

Technical Field

The utility model relates to plastic mechanical equipment, in particular to film granulation equipment.

Background

China is a world large country for plastic production and use, and a large amount of waste plastics are generated every year. Compared with the traditional disposal modes such as landfill and incineration, the method for preparing the recycled plastic particles by recycling the waste plastics has the advantages of small influence on the environment, high resource utilization rate and the like.

The film granulation equipment is mainly used for recycling film-shaped waste plastics such as waste films, plastic bags, woven bags and the like, and generally comprises a feeding machine, a compacting machine, an extruder, a water ring granulator, a dehydrator, a feeding fan and a storage bin, wherein the crushed and cleaned film-shaped waste plastics are fed into the extruder through the feeding machine and the compacting machine to be squeezed, dehydrated and melted to form high-temperature melting materials, the high-temperature melting materials are extruded from an extrusion die head of the extruder and are cut into granular regenerated plastic particles through the water ring granulator, and the regenerated plastic particles are dehydrated through the dehydrator and then are fed into the storage bin through the feeding fan so as to be convenient for bagging of the regenerated plastic particles.

A commonly used water ring pelletizer includes: the cutting device comprises a charging barrel arranged on a rack, wherein a feeding hole of the charging barrel is butted with an extrusion die head of an extruder, a granulating cutter shaft is arranged on the rack through a granulating bearing seat, the granulating cutter shaft is driven to rotate by a granulating driving device, a cutter rest with a granulating cutter is fixedly arranged at the end part of the granulating cutter shaft extending into the charging barrel, a spring is further sleeved on the granulating cutter shaft, two ends of the spring are respectively abutted against the bottom of the cutter rest and the bottom of the charging barrel, and a cutting edge of the granulating cutter is attached to the extrusion surface of the extrusion die head under the elastic action of the spring. When the device works, high-temperature molten materials in the extruder are extruded through each extrusion hole of the extrusion die head, the grain cutting knife rotates at a high speed under the driving of the grain cutting driving device, and the strip-shaped molten materials extruded from each extrusion hole are cut into fine particle-shaped regenerated plastic particles. The water ring granulator with the structure has the following main defects: the elasticity of the spring is gradually weakened in the long-term use process, and the cutting edge of the granulating cutter is also abraded in the long-term use process, so that the elasticity for forcing the granulating cutter to be attached to the extrusion surface cannot meet the required requirement, and the granulating operation is influenced.

SUMMERY OF THE UTILITY MODEL

The technical problems to be solved by the utility model are as follows: the film granulating equipment is characterized in that a granulating blade in the water ring granulator can always press against the extrusion surface of the extrusion die head with constant pressure.

In order to solve the problems, the utility model adopts the technical scheme that: the film granulation equipment comprises: the device comprises a feeding machine, a compacting machine, an extruder, a water ring granulator, a dehydrator and a feeding dehydration fan; the water ring granulator comprises: the extruder comprises a rack which can be fixedly arranged on the extruder, a butt joint connecting cylinder which can be fixedly arranged on an extrusion die head of the extruder, a water inlet pipe communicated with an inner cavity of the butt joint connecting cylinder is fixedly arranged on the butt joint connecting cylinder, a horizontally placed charging barrel is arranged on the rack through a sliding device, the charging barrel can move forwards through the sliding device until the front end opening of the charging barrel is butted with the butt joint connecting cylinder or the charging barrel moves backwards to be far away from the extrusion die head, and a mixed discharging pipe communicated with the inner cavity of the charging barrel is fixedly arranged on the bottom side wall of the rear end of the charging barrel; a rear cover plate which is used for sealing the open port at the rear end of the charging barrel is fixedly arranged on the open port at the rear end of the charging barrel, a plurality of support shafts which extend backwards are fixedly arranged on the rear cover plate, a sliding bearing is respectively arranged on each support shaft, a sliding bearing support plate is fixed on each sliding bearing, a granulating cutter shaft is arranged on each sliding bearing support plate through a granulating bearing seat, the granulating cutter shaft is driven to rotate by a granulating driving device, the front end of the granulating cutter shaft penetrates through a mounting through hole on the rear cover plate in a sealing manner and then extends into the charging barrel, a granulating cutter rest with a granulating cutter is fixedly arranged at the front end of the granulating cutter shaft, at least one air cylinder is arranged on the sliding bearing support plate, an extension bar of each air cylinder points forwards and is fixedly connected to the charging barrel, the sliding bearing support plate drives the granulating cutter shaft to move backwards in the process that the extension bar of each air cylinder extends outwards, and the extension bar of each air cylinder retracts inwards, The sliding bearing support plate drives the granulating cutter shaft to move forward; the charging barrel moves forwards through the sliding device until the front end opening of the charging barrel is in butt joint with the butt joint connecting barrel, and the cutting edge of the grain cutting knife is pressed against the extrusion surface of the extrusion die head under the pressure action of the cylinder; still be provided with the manometer that is used for measuring the pressure of each cylinder on water ring pelleter, numerical value through showing on the manometer just can be very clear understand cut the blade of grain sword paste on extrusion die's the face of extruding, and the blade of grain sword pastes the pressure size on extrusion die's the face of extruding, the operating personnel of being convenient for in time adjusts cylinder pressure, thereby make cut the grain sword and can support with constant pressure and press on extrusion die's the face of extruding, guarantee to cut the normal of grain operation, steady operation, improve the quality of reclaimed plastic granules.

Further, in the above film granulating apparatus, the structure of the sliding device is: the charging barrel comprises at least one linear guide rail sliding table, wherein the linear guide rail on each linear guide rail sliding table is placed and fixed on the frame in the front-back horizontal direction, and the charging barrel is fixed on the sliding table on each linear guide rail sliding table.

Further, in the film granulating equipment, the number of the supporting shafts is three, and the three supporting shafts surround and are uniformly distributed on the periphery of the mounting through holes in the rear cover plate at intervals.

Further, in the above film granulating apparatus, an annular connection collar with a step is provided at the rear end opening of the docking connection barrel, an annular docking collar matched with the step outer profile of the annular connection collar is provided at the front end opening of the charging barrel, and when the charging barrel moves forward to the front end opening of the charging barrel to dock with the docking connection barrel through the sliding device, the annular connection collar and the annular docking collar are connected in a mutually embedded manner; at least one buckle for locking the positions of the ring-shaped connecting shaft collar and the ring-shaped butt joint shaft collar in the clamping connection is arranged between the ring-shaped connecting shaft collar and the ring-shaped butt joint shaft collar.

Further, in the above film granulating apparatus, the feed dewatering fan includes: the fan comprises a base, a fan shell and a bearing seat for supporting a rotating shaft are fixedly arranged on the base; a feed inlet communicated with the inner cavity of the fan shell is formed in the front side plate of the fan shell, a feed pipe is connected to the feed inlet in a sealing manner, a discharge outlet communicated with the inner cavity of the fan shell is formed in the top plate of the fan shell, and a discharge pipe is connected to the discharge outlet in a sealing manner; a rotating shaft supported in the bearing seat penetrates through a through hole on a rear side plate of the fan shell and then extends into an inner cavity of the fan shell, an impeller is fixedly installed on the rotating shaft extending into the inner cavity of the fan shell, and the rotating shaft is driven by a driving device; a C-shaped cylindrical filter screen is arranged in an inner cavity of the fan shell, the C-shaped cylindrical filter screen surrounds the periphery of the impeller, two ends of a notch of the C-shaped cylindrical filter screen are respectively and fixedly connected to the wall of the inner cavity of the fan shell on two sides of the discharge port, and an opening at the rear end of the C-shaped cylindrical filter screen is hermetically connected with a rear side plate of the fan shell; after the front side plate of the fan shell is sealed and covered, the inner side wall of the C-shaped cylindrical filter screen, the front side plate of the fan shell and the rear side plate of the fan shell are surrounded to form an independent feeding cavity, the feeding port and the discharging port are communicated with the feeding cavity, an independent collecting cavity is formed between the outer side wall of the C-shaped cylindrical filter screen and the inner cavity wall of the fan shell in a surrounding mode, regenerated plastic particles enter the feeding cavity through the feeding pipe, the regenerated plastic particles are conveyed out from the discharging pipe after being centrifugally dewatered under the driving of the rotation of the impeller, centrifugally separated water falls into the collecting cavity through the filtering holes in the C-shaped cylindrical filter screen, and a water discharging hole for discharging water in the collecting cavity is further formed in the fan shell.

Further, according to the film granulating equipment, at least one fan is fixedly installed on the base, and the air blowing port of each fan faces the bearing seat.

Further, aforementioned film granulation equipment, wherein, still be provided with the blowing pipe, set up on the lateral wall of blowing pipe with the mouth one-to-one connection hole of blowing of each fan, the mouth of blowing of every fan all communicates with the connection hole that corresponds is sealed, set up the blowing groove with the inner chamber intercommunication of blowing pipe on the lateral wall of the blowing pipe towards the bearing frame.

Further, according to the film granulating equipment, at least one cleaning opening communicated with the collecting cavity is formed in the top plate of the fan shell, and the air suction device can clean the C-shaped cylindrical filter screen through the cleaning opening to suck out impurities such as dust.

Further, aforementioned film granulation equipment, wherein, the sound-proof housing lid is on the base, with each part shroud on the base in the closed cavity that forms between sound-proof housing and base, set up the top through-hole that supplies the discharging pipe to stretch out at the roof of sound-proof housing, set up the lateral part through-hole that supplies the inlet pipe to stretch out on the preceding curb plate of sound-proof housing, it has the one deck soundproof cotton to paste on the inner chamber wall of sound-proof housing.

The utility model has the beneficial effects that: the granulating cutter can always press against the extrusion surface of the extrusion die head with constant pressure, so that the normal and stable operation of granulating operation is ensured, and the quality of regenerated plastic particles is improved; secondly, the feeding dehydration fan integrates feeding and dehydration, the water content of the regenerated plastic particles dehydrated by the dehydrator is usually about 1.5%, and after the regenerated plastic particles dehydrated by the dehydrator are fed into the feeding dehydration fan for secondary dehydration, the water content of the regenerated plastic particles is not more than 1%, so that the water content of the regenerated plastic particles is greatly reduced.

Drawings

FIG. 1 is a schematic view of the structure of a film granulating apparatus according to the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a of fig. 1.

Fig. 3 is a partially enlarged structural view of the rear part in fig. 1.

Fig. 4 is a schematic perspective view of a film granulating apparatus according to the present invention.

Fig. 5 is a partially enlarged structural view of a portion B in fig. 4.

FIG. 6 is a schematic diagram of a feed dewatering fan.

Fig. 7 is a schematic view showing the internal structure of the feed dewatering fan of fig. 6 with the soundproof cover removed.

Fig. 8 is a schematic perspective view of the sound-proof cover and the front plate of the fan case shown in fig. 6, with the sound-proof cover and the front plate removed.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1 and 4, the film granulating apparatus of the present invention includes: a feeding machine 11, a compacting machine 12, an extruding machine 13, a water ring granulator 14, a dehydrator 15 and a feeding dehydration fan 16. The compacting machine 12 can receive the film-shaped waste plastics output from the discharge port of the feeding machine 11, the extruder 13 can receive the compacted film-shaped waste plastics output from the discharge port of the compacting machine 12, the feed port of the water ring granulator 14 is butted at the extrusion die head 131 of the extruder 13, the strip-shaped molten materials extruded from each extrusion hole of the extrusion die head 131 of the extruder 13 are cut and cooled by water cooling, the water-containing regenerated plastic particles output from the mixing discharge pipe 31 of the water ring granulator 14 are conveyed into the dehydrator 15 through the water tank 141 for first dehydration operation, the dehydrator 15 can adopt a device capable of dehydrating the water-containing regenerated plastic particles such as a dehydrating vibrating screen and a centrifugal dehydrator, and the schematic diagram of the film granulating device adopting the dehydrating vibrating screen is shown in fig. 1 and 4. As shown in fig. 1 and 3, a discharging bin 151 may be disposed at a discharging port of the dewatering machine 15, a feeding bin 161 may be disposed on a feeding pipe 62 of the feeding dewatering fan 16, the feeding bin 161 is located below the discharging bin 151 to receive the recycled plastic granules output from the dewatering machine 15, in actual manufacturing, to facilitate bagging of the recycled plastic granules, a bin 17 is also typically disposed, and the recycled plastic granules enter the feeding dewatering fan 16 to perform secondary dewatering operation and are fed into the bin 17 through a conveying pipe 171.

The feeding machine 11, the compacting machine 12, the extruding machine 13, and the dewatering machine 15 can be directly purchased from the market, and thus detailed descriptions of the specific structure of the above devices are omitted here. The embodiment mainly carries out creative improvement design to the structures of the water ring granulator 14 and the feeding dehydration fan 16 so as to improve the running stability of the water ring granulator 14, improve the quality of the recycled plastic particles obtained by granulation and reduce the water content of the final recycled plastic particles.

As shown in fig. 2 and 5, the water ring cutter 14 according to the present embodiment includes: the extruder comprises a rack 2 capable of being fixedly installed on an extruder 13, a butt joint connecting cylinder 33 capable of being fixedly installed on an extrusion die head 131 of the extruder 13, a water inlet pipe 34 communicated with an inner cavity of the butt joint connecting cylinder 33 is fixedly installed on the butt joint connecting cylinder 33, a material cylinder 3 placed horizontally is arranged on the rack 2 through a sliding device, the material cylinder 3 can move forwards through the sliding device until the front end of the material cylinder 3 is open and is in butt joint with the butt joint connecting cylinder 33 or moves backwards to be far away from the extrusion die head 131, and a mixing discharge pipe 31 communicated with the inner cavity 32 of the material cylinder is fixedly installed on the bottom side wall of the rear end of the material cylinder 3. A rear cover plate 35 for sealing the rear open end of the charging barrel 3 is fixedly arranged on the rear open end of the charging barrel 3, a plurality of support shafts 43 extending backwards are fixedly arranged on the rear cover plate 35, a sliding bearing 44 is arranged on each support shaft 43, a sliding bearing support plate 45 is fixed on each sliding bearing 44, a granulating cutter shaft 4 is arranged on the sliding bearing support plate 45 through a granulating bearing seat 46, the granulating cutter shaft 4 is driven to rotate by a granulating driving device, the front end of the granulating cutter shaft 4 penetrates through a mounting through hole on the rear cover plate 35 in a sealing manner and then extends into the inner cavity 32 of the charging barrel, a granulating cutter frame 41 with a granulating cutter is fixedly arranged on the front end of the granulating cutter shaft 4, at least one air cylinder 42 is arranged on the sliding bearing support plate 45, an extending rod of each air cylinder 42 points forwards and is fixedly connected to the charging barrel 3, and an extending rod of each air cylinder 42 extends outwards, The sliding bearing support plate 45 drives the granulating cutter shaft 4 to move backwards, and the sliding bearing support plate 45 drives the granulating cutter shaft 4 to move forwards in the process that the extension bar of each cylinder 42 retracts inwards. After the barrel 3 moves forward by the sliding device until the front opening of the barrel 3 is butted with the butting connector 33, the cutting edge of the dicing blade is pressed against the extrusion surface 132 of the extrusion die head 131 under the pressure of the air cylinder 42. A pressure gauge 48 for measuring the pressure of each cylinder 42 is also provided on the water ring pelletizer 14. Whether the cutting edge of the granulating cutter is attached to the extrusion surface 132 of the extrusion die head 131 or not can be clearly known through the numerical value displayed on the pressure gauge 48, the pressure of the cutting edge of the granulating cutter attached to the extrusion surface 132 of the extrusion die head 131 is large, the pressure of the air cylinder 42 can be timely adjusted by an operator, the granulating cutter can be pressed on the extrusion surface 132 of the extrusion die head 131 by constant pressure, the normal and stable operation of granulating operation is guaranteed, and the quality of regenerated plastic particles is improved.

As shown in fig. 2 and 5, the structure of the sliding device described in this embodiment is: including at least one linear guide slip table, linear guide 21 on every linear guide slip table all is around horizontal direction put and is fixed in frame 2, on feed cylinder 3 was fixed in the slip table on each linear guide slip table. In actual manufacturing production, two linear guide sliding tables are preferably arranged. Besides the above-mentioned structure, the sliding device may also take other forms, and the sliding device is not limited to the above-mentioned one.

In this embodiment, the number of the supporting shafts 43 is three, and the three supporting shafts 43 surround and are uniformly distributed around the periphery of the mounting through hole on the rear cover plate 35 at intervals.

As shown in fig. 2, in the present embodiment, a stepped annular docking collar 36 is provided at the rear end opening of the docking connection barrel 33, an annular docking collar 37 matching the stepped outer profile of the annular docking collar 36 is provided at the front end opening of the cartridge 3, and when the cartridge 3 is moved forward by the sliding device until the front end opening of the cartridge 3 is docked with the docking connection barrel 33, the annular docking collar 36 and the annular docking collar 37 are engaged with each other. Between the annular docking collar 37 and the annular docking collar 36 there is also provided at least one snap locking the position of the snap-in connected annular docking collar 37 and annular docking collar 36. When the film granulation equipment is used, the buckle is in a state of locking the positions of the annular connecting shaft collar 36 and the annular butt joint shaft collar 37, when the operations such as replacing a granulating cutter and the like are needed, the buckle is unfastened, and the charging barrel 3 is moved backwards through the sliding device and is far away from the extrusion die head 131, so that the operation is very simple and convenient.

The pelletizing driving device described in this embodiment adopts a driving motor 47, and the driving motor 47 is fixedly connected with the pelletizing cutter shaft 4 through a coupling. The pressure gauge 48 is typically mounted on the housing of the drive motor 47. The pellet driving means may take other forms in addition to the above-described structure, and the pellet driving means is not limited to the above-described one.

As shown in fig. 7 and 8, the feeding and dewatering fan according to the present embodiment includes: the base 53 is fixedly attached to the base 53, and the fan case 6 and the bearing holder 65 for supporting the rotary shaft 64 are fixed to the base 53. A feed inlet communicated with the inner cavity of the fan shell 6 is formed in the front side plate of the fan shell 6, the feed pipe 62 is connected to the feed inlet in a sealing mode, a discharge outlet communicated with the inner cavity of the fan shell 6 is formed in the top plate of the fan shell 6, and the discharge pipe 63 is connected to the discharge outlet in a sealing mode. The rotating shaft 64 supported in the bearing seat 65 penetrates through a through hole on the rear side plate of the fan housing 6 and then extends into the inner cavity of the fan housing 6, the impeller 9 is fixedly mounted on the rotating shaft 64 extending into the inner cavity of the fan housing 6, and the rotating shaft 64 is driven to rotate by a driving device. The driving device may be a combination of the motor 67 and the belt transmission 66, but the driving device may also be in other forms, and the driving device is not limited to the above-mentioned one.

As shown in fig. 8, a C-shaped cylindrical filter screen 8 is arranged in an inner cavity of the fan housing 6, the C-shaped cylindrical filter screen 8 surrounds the impeller 9, two ends of a gap of the C-shaped cylindrical filter screen 8 are respectively and fixedly connected to the inner cavity wall of the fan housing 6 at two sides of the discharge port, and an open opening at the rear end of the C-shaped cylindrical filter screen 8 is hermetically connected with a rear side plate of the fan housing 6; after the front side plate of the fan shell 6 is sealed, the inner side wall of the C-shaped cylindrical filter screen 8, the front side plate of the fan shell 6 and the rear side plate of the fan shell 6 are encircled to form an independent feeding cavity, and the feeding hole and the discharging hole are communicated with the feeding cavity. An independent collecting cavity is formed by enclosing the outer side wall of the C-shaped cylindrical filter screen 8 and the inner cavity wall of the fan shell 6, regenerated plastic particles enter the feeding cavity through the feeding pipe 62, the regenerated plastic particles are centrifugally dehydrated under the rotation drive of the impeller 9 and then are sent out from the discharging pipe 63, centrifugally dehydrated water falls into the collecting cavity through the filtering holes in the C-shaped cylindrical filter screen 8, and a water discharging hole for discharging the water in the collecting cavity is formed in the fan shell 6.

When the feeding dehydration fan operates, the bearing seat 65 bears a large load, and long-term use can cause the bearing seat 65 to generate heat and further influence the use performance and the service life of the bearing seat 65, so that at least one fan 7 is fixedly installed on the base 53 in the embodiment, as shown in fig. 7 and 8, the air blowing port of each fan 7 faces the bearing seat 65, and air cooling is performed on the bearing seat 65.

The preferable scheme is to add the blowpipe 71, set up the connect through-hole with the mouth one-to-one of blowing of each fan 7 on the lateral wall of blowpipe 71, the mouth of blowing of each fan 7 all communicates with the connect through-hole that corresponds is sealed, set up the blowpipe groove with the inner chamber intercommunication of blowpipe 71 on the lateral wall of blowpipe 71 towards bearing frame 65, that is the blowpipe groove is towards bearing frame 65.

After the feeding dehydration fan is used for a long time, the filtering holes in the C-shaped cylindrical filter screen 8 are easily blocked by impurities such as dust, so that the dehydration effect of the feeding dehydration fan is influenced, therefore, at least one cleaning opening communicated with the collection cavity is formed in the top plate of the fan shell 6, and the cover plate 61 is covered on the cleaning opening in a sealing manner. The cover plate 61 is taken down, the air suction device can penetrate through the cleaning opening to clean the C-shaped cylindrical filter screen 8, impurities such as dust are sucked out, and the dewatering effect of the feeding dewatering fan is guaranteed under the condition that the fan shell 6 is not detached.

The feeding dewatering fan has high noise in the using process, the sound-proof cover 5 is further arranged in the embodiment, as shown in fig. 6, the sound-proof cover 5 covers the base 53, all parts on the base 53 cover the closed cavity formed between the sound-proof cover 5 and the base 53, the top through hole 51 for the discharging pipe 63 to extend out is formed in the top plate of the sound-proof cover 9, the side through hole 52 for the feeding pipe 62 to extend out is formed in the front side plate of the sound-proof cover 5, and a layer of soundproof cotton is attached to the inner cavity wall of the sound-proof cover 5 to reduce the noise generated when the feeding dewatering fan is used.

The feeding dehydration fan with the structure integrates feeding and dehydration, has simple and compact structure and low manufacturing cost, and can dehydrate the regenerated plastic particles while feeding. The water content of the regenerated plastic particles dehydrated by the dehydrator 15 is usually about 1.5%, and after the regenerated plastic particles dehydrated by the dehydrator 15 are sent to the feeding dehydration fan 16 for secondary dehydration, the water content of the regenerated plastic particles is not more than 1%, so that the water content of the regenerated plastic particles is greatly reduced.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but any modifications or equivalent variations made in accordance with the technical spirit of the present invention are within the scope of the present invention as claimed.

Claims (9)

1. A film pelletizing apparatus comprising: material loading machine, compactor, extruder, water ring pelleter, hydroextractor, its characterized in that: further comprising: feeding and dehydrating a fan; the water ring granulator comprises: the extruder comprises a rack which can be fixedly arranged on the extruder, a butt joint connecting cylinder which can be fixedly arranged on an extrusion die head of the extruder, a water inlet pipe communicated with an inner cavity of the butt joint connecting cylinder is fixedly arranged on the butt joint connecting cylinder, a horizontally placed charging barrel is arranged on the rack through a sliding device, the charging barrel can move forwards through the sliding device until the front end opening of the charging barrel is butted with the butt joint connecting cylinder or the charging barrel moves backwards to be far away from the extrusion die head, and a mixed discharging pipe communicated with the inner cavity of the charging barrel is fixedly arranged on the bottom side wall of the rear end of the charging barrel; a rear cover plate which is used for sealing the open port at the rear end of the charging barrel is fixedly arranged on the open port at the rear end of the charging barrel, a plurality of support shafts which extend backwards are fixedly arranged on the rear cover plate, a sliding bearing is respectively arranged on each support shaft, a sliding bearing support plate is fixed on each sliding bearing, a granulating cutter shaft is arranged on each sliding bearing support plate through a granulating bearing seat, the granulating cutter shaft is driven to rotate by a granulating driving device, the front end of the granulating cutter shaft penetrates through a mounting through hole on the rear cover plate in a sealing manner and then extends into the charging barrel, a granulating cutter rest with a granulating cutter is fixedly arranged at the front end of the granulating cutter shaft, at least one air cylinder is arranged on the sliding bearing support plate, an extension bar of each air cylinder points forwards and is fixedly connected to the charging barrel, the sliding bearing support plate drives the granulating cutter shaft to move backwards in the process that the extension bar of each air cylinder extends outwards, and the extension bar of each air cylinder retracts inwards, The sliding bearing support plate drives the granulating cutter shaft to move forward; the charging barrel moves forwards through the sliding device until the front end opening of the charging barrel is in butt joint with the butt joint connecting barrel, and the cutting edge of the grain cutting knife is pressed against the extrusion surface of the extrusion die head under the pressure action of the cylinder; and a pressure gauge for measuring the pressure of each cylinder is also arranged on the water ring granulator.

2. The apparatus for granulating a film as set forth in claim 1, wherein: the structure of the sliding device is as follows: the charging barrel comprises at least one linear guide rail sliding table, wherein the linear guide rail on each linear guide rail sliding table is placed and fixed on the frame in the front-back horizontal direction, and the charging barrel is fixed on the sliding table on each linear guide rail sliding table.

3. The apparatus for granulating a film as set forth in claim 1, wherein: the quantity of supporting axle is three, and three supporting axles encircle and interval evenly distributed is in the periphery of the installation through-hole on the back shroud.

4. A film granulation apparatus as defined in claim 1, 2 or 3, wherein: an annular connecting shaft collar with steps is arranged at an opening at the rear end of the butt joint connecting cylinder, an annular butt joint shaft collar matched with the step outer profile of the annular connecting shaft collar is arranged at an opening at the front end of the charging barrel, and the charging barrel moves forwards through a sliding device until the opening at the front end of the charging barrel is in butt joint with the butt joint connecting cylinder, and the annular connecting shaft collar and the annular butt joint shaft collar are mutually clamped and embedded and connected; at least one buckle for locking the positions of the ring-shaped connecting shaft collar and the ring-shaped butt joint shaft collar in the clamping connection is arranged between the ring-shaped connecting shaft collar and the ring-shaped butt joint shaft collar.

5. The apparatus for granulating a film as set forth in claim 1, wherein: the feeding dehydration fan comprises: the fan comprises a base, a fan shell and a bearing seat for supporting a rotating shaft are fixedly arranged on the base; a feed inlet communicated with the inner cavity of the fan shell is formed in the front side plate of the fan shell, a feed pipe is connected to the feed inlet in a sealing manner, a discharge outlet communicated with the inner cavity of the fan shell is formed in the top plate of the fan shell, and a discharge pipe is connected to the discharge outlet in a sealing manner; a rotating shaft supported in the bearing seat penetrates through a through hole on a rear side plate of the fan shell and then extends into an inner cavity of the fan shell, an impeller is fixedly installed on the rotating shaft extending into the inner cavity of the fan shell, and the rotating shaft is driven by a driving device; a C-shaped cylindrical filter screen is arranged in an inner cavity of the fan shell, the C-shaped cylindrical filter screen surrounds the periphery of the impeller, two ends of a notch of the C-shaped cylindrical filter screen are respectively and fixedly connected to the wall of the inner cavity of the fan shell on two sides of the discharge port, and an opening at the rear end of the C-shaped cylindrical filter screen is hermetically connected with a rear side plate of the fan shell; after the front side plate of the fan shell is sealed and covered, the inner side wall of the C-shaped cylindrical filter screen, the front side plate of the fan shell and the rear side plate of the fan shell are encircled to form an independent feeding cavity, the feeding port and the discharging port are communicated with the feeding cavity, an independent collecting cavity is encircled between the outer side wall of the C-shaped cylindrical filter screen and the inner cavity wall of the fan shell, and a water discharging hole for discharging water in the collecting cavity is further formed in the fan shell.

6. The apparatus for granulating a film as set forth in claim 5, wherein: at least one fan is fixedly installed on the base, and the air blowing port of each fan faces the bearing seat.

7. The apparatus for granulating a film as set forth in claim 6, wherein: still be provided with the blowing pipe, set up on the lateral wall of blowing pipe with the mouth one-to-one connection hole of blowing of each fan, the mouth of blowing of every fan all with the sealed intercommunication of the connection hole that corresponds, set up the blowpit with the inner chamber intercommunication of blowing pipe on the lateral wall of the blowing pipe towards the bearing frame.

8. The apparatus for granulating a film as set forth in claim 5, wherein: at least one cleaning opening communicated with the collection cavity is formed in the top plate of the fan shell.

9. A film granulation apparatus as defined in claim 5, 6 or 8, wherein: the sound-proof housing covers on the base, and with each part shroud on the base in the closed cavity that forms between sound-proof housing and base, set up the top through-hole that supplies the discharging pipe to stretch out at the roof of sound-proof housing, set up the lateral part through-hole that supplies the inlet pipe to stretch out on the preceding curb plate of sound-proof housing, it has the one deck soundproof cotton to paste on the inner chamber wall of sound-proof housing.

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