Film blowing device for biodegradable material

Abstract

The invention relates to the technical field of film blowing devices, in particular to a film blowing device for biodegradable materials, which comprises a film blowing air ring, an air guide assembly, an air volume adjusting assembly, an angle adjusting assembly and a filtering buffer assembly, a spacer ring is vertically arranged on one side in the film blowing air ring, and the film blowing air ring is provided with an air inlet cavity and an air outlet cavity at an interval through the spacer ring; the upper end of the air inlet cavity communicates with the upper end of the air outlet cavity, entering high-pressure air can be filtered and buffered in the film blowing air ring through the spacer ring and the filtering and buffering assembly, the buffered air can be independently controlled through the air volume adjusting assembly and then conveyed to the two annular air channels, then the air is blown to the air guiding assembly through the annular air channels, and after blown air enters the air guiding assembly, the blown air is conveyed to the film blowing assembly through the air volume adjusting assembly. The blowing angle can be adjusted through the angle adjusting assembly, the whole operation can be rapidly adjusted on line according to requirements, the difficulty and the time efficiency of manual adjustment are reduced, and the film blowing processing quality of biodegradable plastic bags is improved.

Description

Technical Field

[0001] The invention relates to the technical field of film blowing devices, in particular to a film blowing device for biodegradable materials. Background Art

[0002] Biodegradable materials refer to materials that can be decomposed by microorganisms under certain environmental conditions and eventually converted into carbon dioxide, water and other harmless substances. Common products made of biodegradable materials in life include biodegradable plastic bags, which are more environmentally friendly than traditional plastic bags. Biodegradable plastic bags need to be processed by film blowing machines.

[0003] The invention with existing publication number CN114789550B discloses an air ring for a film blowing machine, including a volute and a plurality of air outlet rings. Through the above arrangement, the wind is caused to rotate and flow along the inner side of the outer wall of the volute to form a vortex, which can slow down the speed of the air flow to the air outlet gap, reduce the air volume loss, and the gas flows evenly to each air outlet gap, and the air outlet is naturally uniform. The above scheme buffers the air intake by spiral air intake, but with respect to the air intake buffering problem, the quality of the film blowing product depends on the adjustment of the blowing volume and the blowing angle. Different blowing volumes and blowing angles require the staff to have more experience to make repeated adjustments or customize the corresponding component products. When producing different products, the requirements are different, which makes the adjustment operation inconvenient to use. Summary of the invention

[0004] The object of the present invention is to provide a film blowing device for biodegradable materials to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a film blowing device for biodegradable materials, comprising:

[0006] A film blowing air ring, wherein a spacer ring is vertically arranged on one side of the film blowing air ring, and an air inlet cavity and an air outlet cavity are arranged in the film blowing air ring through the spacer ring. The upper ends of the air inlet cavity and the air outlet cavity are connected, and a plurality of air inlet joints are arranged at the lower end of the air inlet cavity through the film blowing air ring. A guide installation ring is horizontally arranged on the inner circumference of the film blowing air ring, and an annular air duct is horizontally opened on the inner circumference of the film blowing air ring and at the upper and lower ends of the guide installation ring;

[0007] An air guide assembly, the air guide assembly comprising a first air guide seat and a second air guide seat, the first air guide seat and the second air guide seat are respectively mounted on the upper and lower ends of the air guide mounting ring, one side of the first air guide seat and the second air guide seat are both provided with an elastic air guide ring inclined upward through an angle adjustment assembly, and the angle adjustment assembly comprises an angle adjustment ring;

[0008] An air volume adjustment assembly, the air volume adjustment assembly comprising two air volume adjustment rings and two restraining rods, and two assembly pressure rings are respectively rotatably arranged in the air outlet cavity and close to the two annular air ducts;

[0009] The filtering and buffering assembly is arranged at the upper end of the air inlet cavity, and the filtering and buffering assembly comprises an annular buffer porous plate.

[0010] Preferably, the film blowing wind ring is located above the first guide seat and is horizontally installed with a guide end cover, the upper end of the guide end cover is plugged with a stabilizing ring, a first air outlet interlayer is provided between the guide end cover and the first guide seat, a connecting ring is provided at the upper end of the second guide seat, the cross-section of the connecting ring is an L-shaped structure, the horizontal section of the connecting ring is plugged with the guide mounting ring, the vertical section of the connecting ring is provided with a plurality of air holes, a second air outlet interlayer is provided between the horizontal section of the connecting ring and the second guide seat, and the two sides of the plurality of air outlets are respectively connected with the annular air duct and the second air outlet interlayer.

[0011] Preferably, the inner diameters of the first guide seat and the second guide seat are respectively smaller than the inner diameters of the connecting ring and the guide end cover, and the upper ends of the inner circumferences of the first guide seat and the second guide seat are provided with mounting grooves, the elastic guide ring is arranged in a conical structure, and the lower end of the elastic guide ring is inserted into the mounting groove.

[0012] Preferably, a sinking groove is provided on one side of the upper end of the elastic guide ring, and an assembly pressure ring is fixedly installed in the groove at the upper end of the elastic guide ring. One side of the assembly pressure ring is inserted into the sinking groove, and the upper end surface of the assembly pressure ring is flush with the elastic guide ring. Two hanging rings are provided on one side of the groove close to the elastic guide ring, and the two hanging rings are respectively inserted into one side of the elastic guide ring.

[0013] Preferably, a receiving groove is vertically opened in the first guide seat and the second guide seat near the lower end of the inner circumference of the elastic guide ring, the angle adjustment ring is vertically movably inserted in the receiving groove, a lifting piston ring is horizontally provided at the lower end of the angle adjustment ring, the upper end of the angle adjustment ring is in contact with the lower end of the inner circumference of the elastic guide ring, a plurality of spring grooves are vertically opened at the lower end of the angle adjustment ring, a constraint rod is horizontally penetrated through the spring groove in the receiving groove, a spring rod is vertically movably inserted into the constraint rod in the spring groove, and a reset spring is sleeved on the lower end of the spring rod located at the constraint rod.

[0014] Preferably, a first annular groove is provided on one side of the guide mounting ring close to the first guide seat and the connecting ring, a second annular groove is provided on one side of the first guide seat and the connecting ring close to the first annular groove, the first annular groove and the second annular groove are arranged corresponding to each other, a third annular groove is horizontally provided on one side of the second guide seat located at the second annular groove, a first through groove is provided between the second annular groove and the third annular groove of the connecting ring, the first through groove is staggered with a number of air holes, a lifting adjustment groove is provided at the lower end of the receiving groove in the first guide seat and the second guide seat, the two lifting adjustment grooves are respectively connected to the second annular groove and the third annular groove to form a second through groove, two high-pressure gas grooves are respectively provided on one side of the guide mounting ring, and the two high-pressure gas grooves are respectively connected to one side of the two first annular grooves to form a third through groove.

[0015] Preferably, one side of the two annular air ducts is respectively connected to the air outlet cavity and is provided with a plurality of ventilation reference holes, the air volume adjustment ring is provided with adjustment holes corresponding to the plurality of ventilation reference holes, a motor drive shaft is vertically rotated in the center of one side of the spacer ring, and gear sleeves are movably connected to the upper and lower sides of the motor drive shaft, the motor drive shaft is located between the two gear sleeves and is provided with an electronic control panel through a conductive slip ring, and the upper and lower ends of the electronic control panel are respectively in contact with one side of the two gear sleeves.

[0016] Preferably, the two gear sleeves are sleeved with a first bevel gear on the sides away from each other, and the spacer rings are located in the air outlet chamber and are horizontally connected with synchronization shafts through bearings on both sides. The two synchronization shafts are respectively provided with a second bevel gear and a first toggle gear on both sides. The second bevel gears of the two synchronization shafts are respectively meshed and connected with the first bevel gears of the two gear sleeves, and the two air volume adjustment rings are symmetrically provided with a plurality of first toggle teeth on the sides close to each other, and one side of the two first toggle gears is respectively meshed and connected with the first toggle teeth on one side of the two air volume adjustment rings.

[0017] Preferably, the annular buffer porous plate is horizontally rotatably arranged at the upper end of the air inlet chamber, and a plurality of second shifting teeth are symmetrically provided on the inner circumference of the annular buffer porous plate close to the spacer ring. The motor drive shaft passes through the upper end of the gear sleeve and is sleeved with a second shifting gear. One side of the second shifting gear is meshed and connected with the second shifting teeth of the annular buffer porous plate. An annular groove is opened at the lower end of the annular buffer porous plate, and a filter is horizontally arranged in the annular groove. Clamping rings are pressed on both sides of the inner side of the annular groove, and the clamping ring is in contact with one side of the filter.

[0018] Preferably, a discharge tube is vertically provided at one side of the air inlet chamber, the lower end of the discharge tube passes through the film blowing air ring and is provided with a discharge joint, and the upper end of the discharge tube is arranged close to the annular buffer porous plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The incoming high-pressure air can be filtered and buffered by the spacer ring and the filter buffer component in the film blowing air ring. The buffered air can be independently controlled by the air volume adjustment component and then transported to the two annular air ducts, and then blown to the air guide component through the annular air ducts. After the air enters the air guide component, the blowing angle can be adjusted by the angle adjustment component. The overall operation can be quickly adjusted online according to demand, reducing the difficulty and timeliness of manual adjustment and improving the film blowing processing quality of biodegradable plastic bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0022] Figure 2 It is a schematic diagram of the structure of the present invention from a second viewing angle;

[0023] Figure 3 It is a schematic diagram of the side section structure of the present invention;

[0024] Figure 4 For the present invention Figure 1 Schematic diagram of part A;

[0025] Figure 5 For the present invention Figure 4 Schematic diagram of part B;

[0026] Figure 6 For the present invention Figure 5 Schematic diagram of the C part;

[0027] Figure 7 For the present invention Figure 4 Schematic diagram of the D part;

[0028] Figure 8 For the present invention Figure 7 Schematic diagram of part E;

[0029] Fig. 9 This is a schematic diagram of the structure of the discharge tube of the present invention;

[0030] Fig.10 For the present invention Fig. 9 Schematic diagram of the F part;

[0031] Fig.11 This is a schematic diagram of the control structure of the air volume adjustment ring of the present invention;

[0032] Fig.12 For the present invention Fig.11 Schematic diagram of the G part;

[0033] Fig.13 This is a schematic diagram of the structure of the second guide seat of the present invention;

[0034] Fig.14This is a schematic diagram of the structure of the elastic guide ring and the angle adjustment ring after being separated from each other;

[0035] Fig.15 For the present invention Fig.14 Schematic diagram of the H site.

[0036] In the figure: film blowing air ring 1, spacer ring 2, air inlet chamber 3, air outlet chamber 4, air inlet joint 5, annular buffer porous plate 6, filter screen 7, clamping ring 8, annular air duct 9, air volume adjustment ring 10, ventilation reference hole 11, guide installation ring 12, first guide seat 13, second guide seat 14, connecting ring 15, guide end cover 16, steady flow ring 17, hanging ring 18, elastic guide ring 19, assembly pressure ring 20, storage groove 21, angle adjustment ring 22, lifting piston ring 23, spring groove 2 4. Constraint rod 25, spring rod 26, return spring 27, first annular groove 28, second annular groove 29, third annular groove 30, lifting adjustment groove 31, high-pressure gas groove 32, vent hole 33, motor drive shaft 34, gear sleeve 35, electronic control panel 36, first bevel gear 37, synchronization shaft 38, second bevel gear 39, first toggle gear 40, first toggle gear 41, discharge tube 42, second toggle gear 43, second toggle gear 44, adjustment air hole 45. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Please refer to the attached Figure 1-15 , this application provides the following technical solutions.

[0039] Embodiment 1: A film blowing device for biodegradable materials comprises a film blowing air ring 1, a spacer ring 2 is vertically arranged on one side of the film blowing air ring 1, an air inlet chamber 3 and an air outlet chamber 4 are arranged in the film blowing air ring 1 through the spacer ring 2, the upper ends of the air inlet chamber 3 and the air outlet chamber 4 are communicated, and a plurality of air inlet joints 5 are arranged at the lower end of the air inlet chamber 3 through the film blowing air ring 1, a guide mounting ring 12 is horizontally arranged on the inner circumference of the film blowing air ring 1, and annular air ducts 9 are horizontally opened on the inner circumference of the film blowing air ring 1 and at the upper and lower ends of the guide mounting ring 12, the wind delivered by the blower enters the air inlet chamber 3 from the air inlet joint 5, and then enters the air outlet chamber 4 after the upper reversing, ready to be blown to the extruded plastic film.

[0040] An air guide assembly is provided to adjust the blowing angle of the air to the plastic film, and the air guide assembly includes a first air guide seat 13 and a second air guide seat 14, and the first air guide seat 13 and the second air guide seat 14 are respectively installed at the upper and lower ends of the air guide mounting ring 12, and one side of the first air guide seat 13 and the second air guide seat 14 is provided with an elastic air guide ring 19 tilted upward through an angle adjustment assembly, and the angle adjustment assembly includes an angle adjustment ring 22, and the film blowing air ring 1 is located above the first air guide seat 13 and is horizontally installed with an air guide end cover 16, and the upper end of the air guide end cover 16 is plugged and installed with a steady flow ring 17, and the air guide end A first air outlet interlayer is provided between the cover 16 and the first air guide seat 13, and a connecting ring 15 is provided at the upper end of the second air guide seat 14. The cross-section of the connecting ring 15 is an L-shaped structure. The horizontal section of the connecting ring 15 is inserted into the guide mounting ring 12, and a plurality of air holes 33 are opened in the vertical section of the connecting ring 15. A second air outlet interlayer is provided between the horizontal section of the connecting ring 15 and the second air guide seat 14, and the two sides of the plurality of air holes 33 are respectively connected with the annular air duct 9 and the second air outlet interlayer. When the air in the air outlet cavity 4 enters the annular air duct 9, it is blown out from the first air outlet interlayer and the second air outlet interlayer respectively.

[0041] The inner diameters of the first guide seat 13 and the second guide seat 14 are respectively smaller than the inner diameters of the connection ring 15 and the guide end cover 16. The upper ends of the inner circumferences of the second guide seat 14 of the first guide seat 13 are provided with a placement groove. The elastic guide ring 19 is arranged in a conical structure, and the lower end of the elastic guide ring 19 is inserted into the placement groove. A sinking groove is provided on one side of the upper end of the elastic guide ring 19. An assembly pressure ring 20 is fixedly installed at the upper end of the elastic guide ring 19 in the placement groove. One side of the assembly pressure ring 20 is inserted into the sinking groove. The upper end surface of the assembly pressure ring 20 is connected to the elastic guide ring 19. The elastic guide ring 19 is arranged flush, and two hanging rings 18 are arranged on one side of the placement groove close to the elastic guide ring 19. The two hanging rings 18 are respectively plugged into one side of the elastic guide ring 19. The elastic guide ring 19 can be conveniently replaced by disassembling the assembly pressure ring 20. When the elastic guide ring 19 is connected to the second guide seat 14 or the first guide seat 13, the connection is more stable through the hanging ring 18, and it will not be separated from the first guide seat 13 or the second guide seat 14 when it is expanded and deformed on the inner side. The connecting ring 15 and the second guide seat 14 can be assembled and connected.

[0042] A receiving groove 21 is vertically opened in the first guide seat 13 and the second guide seat 14 near the lower end of the inner circumference of the elastic guide ring 19, and an angle adjustment ring 22 is vertically movably inserted in the receiving groove 21. A lifting piston ring 23 is horizontally arranged at the lower end of the angle adjustment ring 22. The upper end of the angle adjustment ring 22 contacts the lower end of the inner circumference of the elastic guide ring 19. A plurality of spring grooves 24 are vertically opened at the lower end of the angle adjustment ring 22. A restraining rod 25 is horizontally penetrated through the spring groove 24 in the receiving groove 21. The spring groove 24 is vertically movably inserted in the receiving groove 21. The dynamic plug-in constraint rod 25 is provided with a spring rod 26, and the spring rod 26 is located at the lower end of the constraint rod 25 and is sleeved with a reset spring 27. When the lifting piston ring 23 pushes the angle adjustment ring 22 to rise, the upper end of the angle adjustment ring 22 will push the inner circumference of the elastic guide ring 19 to expand and deform outward, thereby changing the wind direction angle blowing to the plastic film for online adjustment. When the lifting piston ring 23 falls back, the elastic guide ring 19 returns to its original state, and the fall of the angle adjustment ring 22 is reset by the elastic downward pressure of a number of spring rods 26.

[0043] A first annular groove 28 is provided on one side of the guide installation ring 12 near the first guide seat 13 and the connecting ring 15, and a second annular groove 29 is provided on one side of the first guide seat 13 and the connecting ring 15 near the first annular groove 28. The first annular groove 28 is arranged corresponding to the second annular groove 29. A third annular groove 30 is horizontally provided on one side of the second annular groove 29 in the second guide seat 14. A first through groove is provided between the second annular groove 29 and the third annular groove 30 of the connecting ring 15. The first through groove is staggered with a plurality of ventilation holes 33. The lower ends of the first guide seats 13 and the second guide seats 14 at the receiving groove 21 are A lifting adjustment groove 31 is connected and opened, and the two lifting adjustment grooves 31 are respectively connected with the second annular groove 29 and the third annular groove 30 to form a second through groove, and two high-pressure gas grooves 32 are respectively provided on one side of the guide mounting ring 12, and the two high-pressure gas grooves 32 are respectively connected with one side of the two first annular grooves 28 to form a third through groove, and two independently controlled air compressor control devices are respectively connected to one side of the two high-pressure gas grooves 32 of the guide mounting ring 12. When the blowing angle of a single elastic guide ring 19 needs to be adjusted, it can be independently controlled, and after entering the lifting adjustment groove 31, the high-pressure air can push the lifting piston ring 23 to lift.

[0044] An air volume adjustment component is set to independently control the air volume entering the annular air duct 9 online to meet different process requirements. The air volume adjustment component includes two air volume adjustment rings 10 and two constraint rods 25. Two assembly pressure rings 20 are respectively rotatably arranged in the air outlet cavity 4 and close to the two annular air ducts 9. One side of the two annular air ducts 9 is connected to the air outlet cavity 4 and is provided with a plurality of ventilation reference holes 11. The air volume adjustment rings 10 are provided with adjustment air holes 45 corresponding to the plurality of ventilation reference holes 11. A motor drive shaft 34 is vertically rotated at the center of one side of the spacer ring 2. The upper and lower sides of the motor drive shaft 34 are respectively movably sleeved with gears. The gear sleeve 35 and the motor drive shaft 34 are located between the two gear sleeves 35 and are provided with an electric control panel 36 through a conductive slip ring. The upper and lower ends of the electric control panel 36 are respectively in contact with one side of the two gear sleeves 35. An independent electromagnetic module is provided on one side of the electric control panel 36 close to the two gear sleeves 35. When it is necessary to control the rotation of a single gear sleeve 35, the electromagnetic module is driven on one side through the conductive slip ring to realize the synchronous rotation of the electric control panel 36 and the selected gear sleeve 35. The outer side of the gear sleeve 35 is rotatably connected to the bearing through a damping sleeve. When it does not participate in the rotation, the basic activity is limited by the damping sleeve.

[0045] The two sides of the two gear sleeves 35 that are away from each other are both sleeved with a first bevel gear 37, and the two sides of the spacer ring 2 located in the air outlet chamber 4 are respectively provided with a synchronous shaft 38 horizontally inserted through bearings. The two sides of the two synchronous shafts 38 are respectively provided with a second bevel gear 39 and a first toggle gear 41, and the second bevel gears 39 of the two synchronous shafts 38 are respectively meshed and connected with the first bevel gears 37 of the two gear sleeves 35. The sides of the two air volume adjustment rings 10 that are close to each other are symmetrically provided with a plurality of first toggle teeth 40, and one side of the two first toggle gears 41 is respectively meshed and connected with the first toggle teeth 40 on one side of the two air volume adjustment rings 10. The air volume adjustment ring 10 is rotationally controlled by the first bevel gear 37, the second bevel gear 39, the first toggle gear 41 and the first toggle teeth 40. At this time, the adjustment air hole 45 of the air volume adjustment ring 10 and the ventilation reference hole 11 of the annular air duct 9 are misaligned to realize the air inlet control of the annular air duct 9.

[0046] Embodiment 2: On the basis of embodiment 1, a filtering buffer assembly is provided to buffer and filter the high-pressure air sent into the film blowing air ring 1 by the air inlet joint 5. The filtering buffer assembly is provided at the upper end of the air inlet chamber 3. The filtering buffer assembly includes an annular buffer porous plate 6. The annular buffer porous plate 6 is horizontally rotatably provided at the upper end of the air inlet chamber 3. The inner circumference of the annular buffer porous plate 6 close to the spacer ring 2 is symmetrically provided with a plurality of second toggle teeth 44. The motor drive shaft 34 passes through the upper end of the gear sleeve 35 and is sleeved with a second toggle gear 43. The second toggle gear 43 is provided at the upper end of the gear sleeve 35. One side of the moving gear 43 is meshed with the second toggle tooth 44 of the annular buffer porous plate 6. An annular groove is provided at the lower end of the annular buffer porous plate 6. A filter screen 7 is horizontally provided in the annular groove. A clamping ring 8 is installed on both sides of the inner side of the annular groove, and the clamping ring 8 is in contact with one side of the filter screen 7. A discharge tube 42 is vertically provided on one side of the air inlet chamber 3. The lower end of the discharge tube 42 passes through the film blowing air ring 1 and is provided with a discharge joint. The upper end of the discharge tube 42 is arranged close to the annular buffer porous plate 6. After the high-pressure air enters the air inlet chamber 3, , firstly, it collides and buffers with the filter screen 7 and the annular buffer porous plate 6. The buffered stable high-pressure airflow enters the air outlet cavity 4 from the top, and then enters the annular air duct 9. When passing through the filter screen 7, dust can be filtered. The discharge joint of the discharge tube 42 can be connected to the electromagnetic control blocking valve. When the filter screen 7 is blocked, the adjustment air hole 45 of the air volume adjustment ring 10 is misaligned with the ventilation reference hole 11, and the electromagnetic valve of the discharge tube 42 is opened. The high-pressure airflow in the film blowing air ring 1 can only be discharged through the discharge tube 42. At this time, the air in the film blowing air ring 1 Flows come from all directions, among which the high-pressure airflow above will backwash and clean the filter 7. During this period, the second shifting gear 43 shifts the second shifting teeth 44, and the annular buffer porous plate 6 can be rotated and controlled to achieve comprehensive treatment of the filter 7. In addition, in order to improve the cleaning effect of the filter 7, the upper end of the discharge tube 42 can be in direct contact with the lower end of the filter 7 or a small gap can be reserved. At this time, most of the high-pressure wind will only blow downward from the upper part of the film blowing air ring 1 to the filter 7, and the pollutants in the filter 7 will be blown out of the discharge tube 42.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A film blowing device for biodegradable materials, characterized in that: include: A film blowing air ring (1), wherein a spacer ring (2) is vertically arranged on one side of the film blowing air ring (1), and the film blowing air ring (1) is provided with an air inlet chamber (3) and an air outlet chamber (4) through the spacer ring (2), the upper ends of the air inlet chamber (3) and the air outlet chamber (4) are connected, and the lower end of the air inlet chamber (3) passes through the film blowing air ring (1) and is connected to a plurality of air inlet joints (5), a guide installation ring (12) is horizontally arranged on the inner circumference of the film blowing air ring (1), and an annular air duct (9) is horizontally opened on the inner circumference of the film blowing air ring (1) and at both upper and lower ends of the guide installation ring (12); An air guide assembly, the air guide assembly comprising a first air guide seat (13) and a second air guide seat (14), the first air guide seat (13) and the second air guide seat (14) being respectively mounted on the upper and lower ends of an air guide mounting ring (12), one side of each of the first air guide seat (13) and the second air guide seat (14) being provided with an elastic air guide ring (19) tilted upwards through an angle adjustment assembly, and the angle adjustment assembly comprising an angle adjustment ring (22); An air volume adjustment component, the air volume adjustment component comprising two air volume adjustment rings (10) and two restraining rods (25), and two assembly pressure rings (20) are rotatably disposed in the air outlet cavity (4) and close to the two annular air ducts (9); A filtering and buffering component is arranged at the upper end of the air inlet cavity (3), and the filtering and buffering component comprises an annular buffer porous plate (6).

2. A film blowing device for biodegradable materials according to claim 1, characterized in that: The film blowing air ring (1) is located above the first guide seat (13) and is horizontally installed with a guide end cover (16). The upper end of the guide end cover (16) is plugged with a flow stabilizing ring (17). A first air outlet interlayer is provided between the guide end cover (16) and the first guide seat (13). A connecting ring (15) is provided at the upper end of the second guide seat (14). The cross-section of the connecting ring (15) is an L-shaped structure. The horizontal section of the connecting ring (15) is plugged with the guide installation ring (12). The vertical section of the connecting ring (15) is provided with a plurality of air holes (33). A second air outlet interlayer is provided between the horizontal section of the connecting ring (15) and the second guide seat (14), and the two sides of the plurality of air holes (33) are respectively connected to the annular air duct (9) and the second air outlet interlayer.

3. A film blowing device for biodegradable materials according to claim 2, characterized in that: The inner diameters of the first flow guide seat (13) and the second flow guide seat (14) are respectively smaller than the inner diameters of the connecting ring (15) and the flow guide end cover (16); the upper ends of the inner circumferences of the first flow guide seat (13) and the second flow guide seat (14) are both provided with placement grooves; the elastic flow guide ring (19) is arranged in a conical structure, and the lower end of the elastic flow guide ring (19) is inserted into the placement groove.

4. A film blowing device for biodegradable materials according to claim 3, characterized in that: A sinking groove is provided on one side of the upper end of the elastic guide ring (19); an assembly pressure ring (20) is fixedly installed in the placement groove at the upper end of the elastic guide ring (19); one side of the assembly pressure ring (20) is plugged into the sinking groove; the upper end surface of the assembly pressure ring (20) is flush with the elastic guide ring (19); two hanging rings (18) are provided on one side of the placement groove close to the elastic guide ring (19); the two hanging rings (18) are respectively plugged into one side of the elastic guide ring (19).

5. A film blowing device for biodegradable materials according to claim 4, characterized in that: A receiving groove (21) is vertically provided in the first guide seat (13) and the second guide seat (14) near the lower end of the inner circumference of the elastic guide ring (19); an angle adjustment ring (22) is vertically movably inserted in the receiving groove (21); a lifting piston ring (23) is horizontally provided at the lower end of the angle adjustment ring (22); the upper end of the angle adjustment ring (22) is in contact with the lower end of the inner circumference of the elastic guide ring (19); a plurality of spring grooves (24) are vertically provided at the lower end of the angle adjustment ring (22); a restraining rod (25) is horizontally penetrated through the spring groove (24) in the receiving groove (21); a spring rod (26) is vertically movably inserted in the restraining rod (25) in the spring groove (24); and a return spring (27) is sleeved at the lower end of the spring rod (26) located at the restraining rod (25).

6. A film blowing device for biodegradable materials according to claim 5, characterized in that: A first annular groove (28) is provided in the guide installation ring (12) on one side close to the first guide seat (13) and the connecting ring (15); a second annular groove (29) is provided in the first guide seat (13) and the connecting ring (15) on one side close to the first annular groove (28); the first annular groove (28) and the second annular groove (29) are arranged correspondingly; a third annular groove (30) is provided horizontally in the second guide seat (14) on one side of the second annular groove (29); the second annular groove (29) and the third annular groove (30) of the connecting ring (15) are arranged opposite to each other. A first through groove is provided in communication therebetween, the first through groove is staggered with a plurality of ventilation holes (33), the first guide seat (13) and the second guide seat (14) are both connected at the lower end of the receiving groove (21) and are provided with a lifting adjustment groove (31), the two lifting adjustment grooves (31) are respectively connected to the second annular groove (29) and the third annular groove (30) and are provided with a second through groove, and two high-pressure gas grooves (32) are respectively provided on one side of the guide installation ring (12), and the two high-pressure gas grooves (32) are respectively connected to one side of the two first annular grooves (28) and are provided with a third through groove.

7. A film blowing device for biodegradable materials according to claim 6, characterized in that: One side of the two annular air ducts (9) is connected to the air outlet cavity (4) and is provided with a plurality of ventilation reference holes (11); the air volume adjustment ring (10) is provided with adjustment air holes (45) corresponding to the plurality of ventilation reference holes (11); a motor drive shaft (34) is provided at the center of one side of the spacer ring (2) for vertical rotation; upper and lower sides of the motor drive shaft (34) are movably sleeved with gear sleeves (35); the motor drive shaft (34) is located between the two gear sleeves (35) and is provided with an electric control panel (36) via a conductive slip ring; the upper and lower ends of the electric control panel (36) are respectively in contact with one side of the two gear sleeves (35).

8. The film blowing device for biodegradable materials according to claim 7, characterized in that: The two gear sleeves (35) are sleeved with a first bevel gear (37) on the sides away from each other. The spacer ring (2) is located in the air outlet chamber (4) and is provided with a synchronous shaft (38) on both sides thereof through a bearing for horizontal insertion. The two synchronous shafts (38) are provided with a second bevel gear (39) and a first shifting gear (41) on both sides thereof. The second bevel gears (39) of the two synchronous shafts (38) are respectively meshed and connected with the first bevel gears (37) of the two gear sleeves (35). The two air volume adjustment rings (10) are symmetrically provided with a plurality of first shifting teeth (40) on the sides thereof, and one side of the two first shifting gears (41) is respectively meshed and connected with the first shifting teeth (40) on one side of the two air volume adjustment rings (10).

9. A film blowing device for biodegradable materials according to claim 8, characterized in that: The annular buffer porous plate (6) is horizontally rotatably arranged at the upper end of the air inlet chamber (3); a plurality of second shifting teeth (44) are symmetrically arranged on the inner circumference of the annular buffer porous plate (6) close to the spacer ring (2); a motor drive shaft (34) passes through the upper end of the gear sleeve (35) and is sleeved with a second shifting gear (43); one side of the second shifting gear (43) is meshed and connected with the second shifting teeth (44) of the annular buffer porous plate (6); an annular groove is provided at the lower end of the annular buffer porous plate (6); a filter screen (7) is horizontally arranged in the annular groove; clamping rings (8) are press-fitted on both sides of the inner side of the annular groove, and the clamping ring (8) is in contact with one side of the filter screen (7).

10. A film blowing device for biodegradable materials according to claim 9, characterized in that: A discharge tube (42) is vertically arranged on one side of the air inlet chamber (3); the lower end of the discharge tube (42) penetrates the film blowing air ring (1) and is provided with a discharge joint, and the upper end of the discharge tube (42) is arranged close to the annular buffer porous plate (6).

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