Melting device for recycling agricultural waste agricultural film

Abstract

The invention is applicable to the technical field of agricultural film recovery, and provides a melting device for agricultural waste agricultural film recovery, which comprises an extruder for melting agricultural film fragments; the feeding hopper is mounted on the extruder; the storage box is arranged on one side of the extruder and is used for storing to-be-treated agricultural films and color master batches in a classified manner; the feeding mechanism is arranged on the feeding hopper and is used for maintaining the material level of the feeding hopper to be stable and ensuring continuous and stable feeding, and the feeding mechanism comprises a feeding pipe arranged on the feeding hopper, a feeding pipe arranged on the feeding hopper and a discharging pipe arranged on the feeding hopper, and the first auger is rotationally mounted in the feeding pipe and is used for conveying materials to a hopper opening of the feeding hopper. According to the melting device for recycling the agricultural waste agricultural film, pre-melting caking prevention, negative pressure material suction and mechanical dredging are combined, the problems that the agricultural film is light, fluffy and prone to blockage and floating are effectively solved, and the quality consistency of regenerated plastic particles is effectively improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of agricultural film recycling, and particularly relates to a melting device for recycling of agricultural waste agricultural film. BACKGROUND

[0002] With the rapid development of modern agriculture, the use of plastic agricultural film is increasing. Subsequently, the problem of "white pollution" caused by a large amount of waste agricultural film. Recycling and regenerating granulation of waste agricultural film is an important way to realize resource recycling and protect the environment. At present, the mainstream recycling process in the industry usually includes the following steps: collection, preliminary cleaning, crushing, melt extrusion, cooling and granulation. Among them, melt extrusion is one of the key processes, and the core equipment is usually a single screw or double screw extruder.

[0003] The existing agricultural film melting device based on the extruder is prone to "bridge" blockage of the feeding port when processing light, fluffy and easily entangled crushed agricultural film, thereby causing feeding interruption and "starvation feeding" of the extruder, which makes the actual output and design capacity seriously inconsistent, and the production efficiency is low. Secondly, unstable feeding leads to uneven plasticization of the material, resulting in quality defects such as uneven color, poor performance and containing unmelted substances in the final regenerated product. SUMMARY

[0004] The present application provides a kind of agricultural waste agricultural film recycling melting device, to solve the problem of blockage, low production efficiency and unstable product quality caused by feeding "bridge" in the above background technology.

[0005] To solve the above problems, the present application is realized as follows: a kind of agricultural waste agricultural film recycling melting device, comprising: an extruder for melting treatment of agricultural film fragments;A feeding hopper mounted on the extruder;A storage tank is arranged on one side of the extruder for classified storage of agricultural film and color master batch to be treated;A feeding mechanism is arranged on the feeding hopper for maintaining stable material level of the feeding hopper and ensuring continuous and stable feeding, the feeding mechanism comprises: a feeding pipe arranged on the feeding hopper;A first auger rotatably mounted in the feeding pipe for conveying material to the hopper mouth of the feeding hopper;A mixing box fixedly installed on the top of the feeding hopper for uniformly mixing agricultural film and color master batch;A stirring rod rotatably installed in the mixing box for stirring and mixing agricultural film and color master batch;A first motor fixedly installed on the top of the mixing box for synchronously driving the stirring rod and the first auger to operate, the first motor is fixedly connected with the stirring rod through the output shaft of the shaft coupling;A linkage mechanism is arranged on the rotating shafts of the stirring rod and the first auger for transmitting power and realizing synchronous rotation of the two;A material conveying mechanism is arranged on the storage tank for conveying material to the mixing box.

[0006] Preferably, the linkage mechanism comprises: a connecting cover fixedly installed on the bottom of the mixing box and rotationally connected with the rotating shaft of the first auger; first rotating rods rotationally arranged on the mixing box and the connecting cover respectively; two groups of first bevel gears fixedly installed on the first rotating rods, the first auger and the stirring rod respectively, and the two groups of first bevel gears being engaged with each other; first differential chain wheels fixedly sleeved on the first rotating rods, and a first chain being sleeved on the differential chain wheels.

[0007] Preferably, the outer side of the feeding pipe is sleeved with a jacket, a water pipe is installed on the jacket, the jacket is used for preventing the material in the feeding pipe from being softened and bonded into a block too early, a connecting ring is fixedly sleeved on the jacket, and the connecting ring is connected with the connecting sheet on one side of the feeding hopper through a fastening bolt.

[0008] Preferably, the material conveying mechanism comprises: a partition plate fixedly installed in the storage box, the partition plate separates the storage box into a storage cavity for storing color master batches and a processing cavity for storing agricultural films; a group of conveying barrels fixedly installed on the bottom of the storage box and respectively connected with the processing cavity and the storage cavity, the conveying barrels are fixedly connected with the mixing box; second augers installed in the conveying barrels for conveying materials; second motors fixedly installed on one side of the conveying barrels for driving the second augers to rotate, output shafts of the second motor couplings are fixedly connected with the second augers; and a material suction mechanism arranged on the conveying barrel below the processing cavity for assisting the feeding of the agricultural films.

[0009] Preferably, the material suction mechanism comprises: an air port formed in the bottom of the conveying barrel, a separation net is installed in the air port; a suction hopper fixedly installed on the bottom of the conveying barrel, the suction hopper is connected with the air port; and a first vacuum pump fixedly installed on the bottom of the storage box, a suction pipe of the first vacuum pump is connected with the suction hopper.

[0010] Preferably, a dredging mechanism is arranged in the processing cavity for assisting the agricultural film to be discharged into the conveying cylinder, the dredging mechanism comprising: a support plate fixedly installed on one side of the partition plate; a dredging rod slidably installed on the support plate, the dredging rod being arranged in an inclined manner and located above the conveying cylinder; a supporting roller fixedly installed on the top end of the dredging rod; a reset spring sleeved on the dredging rod for resetting the dredging rod, the two ends of the reset spring being in contact with the supporting roller and the support plate respectively; a connecting rod rotatably installed on the storage tank, a cam for driving the dredging rod to move up and down reciprocatingly being sleeved on the connecting rod, the surface of the cam being in contact with the supporting roller; a transmission mechanism arranged on the connecting rod and the second auger shaft for transmitting power and realizing synchronous rotation, the transmission mechanism comprising: differential gears fixedly sleeved on the connecting rod and the second auger shaft respectively; a transmission chain sleeved on a set of the differential gears, the transmission chain being engaged with a set of the differential gears.

[0011] Preferably, a protective cover is installed on the support plate for protecting the reset spring and the cam, the protective cover being fixedly connected with one side of the partition plate, a fixed cover being fixedly installed on one side of the processing cavity for protecting the differential gears and the transmission chain, the fixed cover being rotatably connected with the connecting rod.

[0012] Preferably, a crushing mechanism is arranged in the processing cavity for crushing large agricultural film fragments, the crushing mechanism comprising: a receiving hopper fixedly installed on the top of the storage tank; a collecting hopper installed on the top of the processing cavity, the collecting hopper being located below the receiving hopper; a set of coarse crushing rollers and a set of fine crushing rollers rotatably installed in the collecting hopper for crushing large agricultural film fragments, a set of the fine crushing rollers being located below the coarse crushing rollers; connecting gears sleeved on the shafts of a set of the coarse crushing rollers and the fine crushing rollers and engaged with the gears on the other shafts of the same set respectively; a connecting mechanism arranged on the storage tank and the first rotating rod for transmitting power and realizing synchronous rotation.

[0013] Preferably, the connecting mechanism comprises: first differential gears fixedly sleeved on the shafts of any gears in the two sets of connecting gears, a set of the first differential gears being engaged for synchronously driving the coarse crushing rollers and the fine crushing rollers to rotate; a second rotating rod rotatably installed on one side of the storage tank; second differential chain wheels fixedly sleeved on the second rotating rod and the first rotating rod respectively; a second chain sleeved on a set of the second differential chain wheels, the second chain being engaged with a set of the second differential chain wheels; second bevel gears fixedly sleeved on the other end of the second rotating rod and the shaft of any connecting gear, a set of the second bevel gears being engaged.

[0014] Preferably, the bottom of the processing cavity and the storage cavity is provided with an inclined frame with elastic function, the material of the inclined frame is elastic steel plate, and the top of the mixing box is fixedly provided with a first protective cover for protecting the first motor, the linkage mechanism and the second differential chain wheel.

[0015] Compared with the related art, the agricultural waste agricultural film recycling melting device provided by the application has the following advantages

[0016] Beneficial effects:

[0017] Compared with the prior art, the agricultural waste agricultural film recycling melting device provided by the application ensures stable material flow into the extruder through the constant-speed feeding mechanism, avoids uneven load of the extruder and defects in the output material quality caused by material level fluctuation, and significantly improves the melting efficiency and the quality uniformity of the final regenerated plastic particles. In addition, the agricultural film and the color master batch are mechanically mixed in advance before melting, which ensures uniform distribution of the color master batch, makes the final output plastic particles uniform in color, and improves the appearance quality and market value of the recycled material.

[0018] In summary, the agricultural waste agricultural film recycling melting device provided by the application effectively solves the problems of easy blocking and easy floating of the light and fluffy agricultural film by combining anti-pre-melting caking, negative pressure suction and mechanical dredging, and effectively improves the quality consistency of the regenerated plastic particles. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a front view structural schematic diagram of an agricultural waste agricultural film recycling melting device provided by the application;

[0020] Figure 2 is a front view structural schematic diagram of a storage tank provided by the application;

[0021] Figure 3 is a front view structural schematic diagram of a second protective cover provided by the application;

[0022] Figure 4 is a front view structural schematic diagram of a feeding hopper, a feeding pipe and a mixing box provided by the application;

[0023] Figure 5 is a side view structural schematic diagram of a storage tank, a conveying cylinder and a mixing box provided by the application;

[0024] Figure 6 is a top view assembly drawing of a connecting gear, a first differential gear and a linking gear provided by the application;

[0025] Figure 7 is an enlarged structural schematic diagram of part A shown in Figure 2

[0026] ​Figure 8 for Figure 5 An enlarged structural diagram of part B shown in the figure;

[0027] Figure 9 for Figure 2 An enlarged structural diagram of section C shown in the figure;

[0028] Figure 10 for Figure 3 An enlarged structural diagram of part D shown in the figure;

[0029] Figure 11 for Figure 2 The diagram shows an enlarged view of part E.

[0030] Reference numerals: 1. Extruder; 2. Feed hopper; 3. Storage bin; 4. Feed pipe; 5. First auger; 6. Mixing bin; 7. Agitator rod; 8. First motor; 9. Connecting cover; 10. First rotating rod; 11. First bevel gear; 12. First differential sprocket; 13. First chain; 14. Jacket; 15. Connecting ring; 16. Fastening bolt; 17. Partition plate; 18. Conveying cylinder; 19. Second auger; 20. Second motor; 21. Partition net; 22. Suction hopper; 23. First vacuum pump; 24. Support plate; 25. Unblocking rod; 26. Support roller; 27. Return spring; 28. Connecting rod; 29. ​​Cam; 30. Differential wheel; 31. Transmission chain; 32. Protective cover; 33. Fixing cover; 34. 35. Feeding hopper; 36. Collecting hopper; 37. Coarse crushing roller; 38. Fine crushing roller; 39. Inclined frame; 40. Connecting gear; 41. First differential gear; 42. Second rotating rod; 43. Second differential sprocket; 44. Second chain; 45. Second bevel gear; 46. First protective cover; 47. Support block; 48. Hammer rod; 49. Support spring; 50. Connecting sprocket; 51. Connecting chain; 52. Second differential gear; 53. Connecting gear; 54. Third differential sprocket; 55. Third chain; 56. Partition; 57. Connecting frame; 58. Arc-shaped filter screen; 59. Second vacuum pump; 60. Scraper; 61. Sawtooth; 62. Fourth differential sprocket; 63. Fourth chain; 64. Second protective cover. Detailed Implementation

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects, not to describe a particular order; the terms "inner," "outer," "left," and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0032] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] This invention provides a melting device for recycling agricultural waste film, such as... Figures 1-11 As shown, the melting device for recycling agricultural waste film includes: an extruder 1 for melting agricultural film fragments; a feed hopper 2 installed on the extruder 1; a storage bin 3 located on one side of the extruder 1 for classifying and storing agricultural film and masterbatch to be processed; and a feeding mechanism installed on the feed hopper 2 to maintain a stable material level and ensure continuous and stable feeding, the feeding mechanism including: a feed pipe 4 installed on the feed hopper 2; a first auger 5 rotatably installed in the feed pipe 4 for conveying material to the opening of the feed hopper 2; and a feed pipe 4 fixedly installed on the feed hopper 2. At the top of the hopper 2 is a mixing tank 6 for uniformly mixing agricultural film and color masterbatch; a stirring rod 7 is rotatably installed in the mixing tank 6 for stirring and mixing agricultural film and color masterbatch; a first motor 8 is fixedly installed at the top of the mixing tank 6 for synchronously driving the stirring rod 7 and the first auger 5, and the first motor 8 is fixedly connected to the stirring rod 7 via a coupling output shaft; a linkage mechanism is set on the rotating shafts of the stirring rod 7 and the first auger 5 for transmitting power and realizing synchronous rotation of the two; and a conveying mechanism is set on the storage tank 3 for conveying materials into the mixing tank 6.

[0034] In this embodiment, first, the operator stores the recycled agricultural film fragments and color master batches for coloring in the corresponding compartments of the storage box 3 respectively, and the agricultural film and color master batches are transported into the top mixing box 6 in a predetermined ratio through independent feeding mechanisms, then the first motor 8 is started to drive the stirring rod 7 to rotate, and the agricultural film and color master batches in the mixing box 6 are preliminarily and forcibly mechanically mixed, at the same time, through the linkage mechanism, the power of the first motor 8 is synchronously transmitted to the first auger 5 vertically installed in the feeding pipe 4, and the uniformly mixed material falls from the bottom of the mixing box 6 into the feeding pipe 4 and is stably pushed downward into the feeding hopper 2 of the extruder 1 by the continuously rotating first auger 5, and this forced feeding mode ensures that the material level of the feeding hopper 2 is always stable, providing continuous and uniform raw material supply for the subsequent process, finally, the material enters the extruder 1, is melted and plasticized under high temperature and strong shear force, and is extruded, preparing for the subsequent cooling and granulation process, and the constant-speed running feeding mechanism ensures that the material flow entering the extruder 1 is stable, avoiding problems such as uneven load of the extruder 1 and defects of the output material quality caused by material level fluctuation, thereby significantly improving the melting efficiency and the quality uniformity of the final recycled plastic particles, in addition, by preliminarily mechanically mixing the agricultural film and color master batches before melting, the uniform distribution of the color master batches is ensured, so that the color of the finally output plastic particles is uniform, and the appearance quality and market value of the recycled material are improved.

[0035] In a further preferred embodiment of the application, the linkage mechanism comprises: a connecting cover 9 fixedly installed at the bottom of the mixing box 6 and rotationally connected with the rotating shaft of the first auger 5; first rotating rods 10 rotationally arranged on the mixing box 6 and the connecting cover 9 respectively; two groups of first bevel gears 11 installed on a group of the first rotating rods 10, the first auger 5 and the stirring rod 7 respectively, and the two first bevel gears 11 are engaged; first differential chain wheels 12 fixedly sleeved on a group of the first rotating rods 10, and a first chain 13 is sleeved on a group of the differential chain wheels 12.

[0036] In this embodiment, when the first motor 8 drives the stirring rod 7 to rotate, the first bevel gear 11 fixed to the shaft end of the stirring rod 7 rotates, and the bevel gear is engaged with another first bevel gear 11 horizontally installed in the connecting cover 9, which converts the vertical rotation into horizontal rotation, thereby driving the first rotating rod 10 to rotate, and the first differential chain wheel 12 on the first rotating rod 10 transmits power to another first rotating rod 10 also provided with a first differential chain wheel 12 through the first chain 13, so that another group of first bevel gears 11 converts the horizontal rotation into vertical rotation again, thereby driving the rotating shaft of the first auger 5 to rotate, and by selecting differential chain wheels with a specific gear ratio, this mechanism cleverly realizes high-speed rotation of the stirring rod 7 to optimize the mixing effect, while the first auger 5 rotates at a lower speed to ensure a stable and controllable feeding amount.

[0037] In the further preferred embodiment of the present application, the outer side of the feeding pipe 4 is sleeved with a jacket 14, a water pipe is installed on the jacket 14, the jacket 14 is used to prevent the material in the feeding pipe 4 from softening and sticking into blocks, a connecting ring 15 is fixedly sleeved on the jacket 14, and the connecting ring 15 is connected with the connecting sheet on one side of the feeding hopper 2 through a fastening bolt 16.

[0038] In the present embodiment, the feeding pipe 4 close to the extruder 1 is heated and the temperature is increased during the melting process. In order to prevent the material (especially the agricultural film) from softening and sticking due to the early heating before entering the extruder, even from blocking and plugging in the feeding pipe 4, a jacket 14 is sleeved on the outer side of the feeding pipe 4. The jacket 14 is connected with an external cooling water system through a water pipe, so that the cold water is continuously circulated in the jacket 14, effectively cooling the feeding pipe 4, ensuring that the material keeps the solid particle state during the conveying by the first auger 5, and ensuring the smoothness of the conveying. The jacket 14 is fixed on the feeding hopper 2 through the connecting ring 15 and the fastening bolt 16, facilitating the installation and maintenance. Through the setting of the jacket 14, the heat conduction from the barrel of the extruder 1 to the feeding pipe 4 is effectively insulated, preventing the agricultural film fragments from adhering to the pipe wall or the auger due to the early softening before entering the extruder 1, and fundamentally avoiding the blocking problem of the material in the feeding link, ensuring the continuity of the production.

[0039] In the further preferred embodiment of the present application, the feeding mechanism comprises a partition plate 17 fixedly installed in the storage tank 3, the partition plate 17 separates the storage tank 3 into a storage cavity for storing color master batches and a processing cavity for storing agricultural films; a group of conveying cylinders 18 fixedly installed at the bottom of the storage tank 3 and respectively connected with the processing cavity and the storage cavity, the group of conveying cylinders 18 are fixedly connected with the mixing box 6; a second auger 19 installed in each of the conveying cylinders 18 for conveying the material; a second motor 20 fixedly installed on one side of the conveying cylinder 18 for driving the second auger 19 to rotate, the output shaft of the coupling of the second motor 20 is fixedly connected with the second auger 19; and a material suction mechanism arranged on the conveying cylinder 18 below the processing cavity for assisting the feeding of the agricultural film.

[0040] In the embodiment, the inside of the storage box 3 is divided into a processing cavity (for storing agricultural film) and a storage cavity (for storing color master batch) by the partition plate 17. At the bottom of each cavity, a conveying cylinder 18 is connected, and a second auger 19 driven by a second motor 20 is installed in the conveying cylinder 18. The operator can adjust the rotating speed of the two second motors 20 according to the color formula required by the final product, so as to control the conveying ratio of the agricultural film and the color master batch. The two second augers 19 horizontally convey the materials, and finally the materials are mixed in the mixing box 6. In particular, the conveying cylinder 18 below the processing cavity of the agricultural film is also provided with a material suction mechanism to assist the light and bridging agricultural film fragments to smoothly enter the conveying cylinder 18.

[0041] In the further preferred embodiment of the application, the material suction mechanism comprises: an air port opened at the bottom of the conveying cylinder 18, a screen 21 is installed in the air port; a suction hopper 22 fixedly installed at the bottom of the conveying cylinder 18, the suction hopper 22 is in communication with the air port; and a first vacuum pump 23 fixedly installed at the bottom of the storage box 3, the suction pipe of the first vacuum pump 23 is connected with the suction hopper 22.

[0042] In the embodiment, when the second auger 19 starts to operate, the first vacuum pump 23 is started synchronously, and the air at the air port at the bottom of the conveying cylinder 18 is extracted through the suction pipe and the suction hopper 22. The suction force generates negative pressure at the inlet of the conveying cylinder 18, which can effectively “suck” the agricultural film fragments in the upper processing cavity into the conveying cylinder 18, and the agricultural film fragments are captured and conveyed by the second auger 19. The screen 21 installed at the air port can effectively prevent the larger agricultural film fragments from being sucked into the vacuum pump, and plays a role in protecting the equipment. In practice, a pressure sensor can be installed on the first vacuum pump 23 to monitor the operating pressure in real time. If the air port is seriously blocked and the pressure is abnormal, the system can automatically alarm or stop to prevent the vacuum pump from being damaged due to overload.

[0043] In the further preferred embodiment of the present application, the processing cavity is provided with a dredging mechanism for assisting the agricultural film to be discharged into the conveying cylinder 18, which comprises a support plate 24 fixedly installed on one side of the partition plate 17, a dredging rod 25 slidably installed on the support plate 24, the dredging rod 25 being arranged in an inclined manner and located above the conveying cylinder 18, a supporting roller 26 fixedly installed on the top end of the dredging rod 25, a reset spring 27 sleeved on the dredging rod 25 for resetting the dredging rod 25, the two ends of the reset spring 27 being in contact with the supporting roller 26 and the support plate 24 respectively, a connecting rod 28 rotatably installed on the storage tank 3, a cam 29 sleeved on the connecting rod 28 for driving the dredging rod 25 to move up and down reciprocatingly, the surface of the cam 29 being in contact with the supporting roller 26, a transmission mechanism arranged on the connecting rod 28 and the rotating shaft of the second auger 19 for transmitting power and realizing synchronous rotation, the transmission mechanism comprising differential gears 30 fixedly sleeved on the connecting rod 28 and the rotating shaft of the second auger 19 respectively, and a transmission chain 31 sleeved on a group of the differential gears 30, the transmission chain 31 being engaged with a group of the differential gears 30.

[0044] In the present embodiment, through the arrangement of a group of the differential gears 30 and the transmission chain 31, the rotating power of the second auger 19 is transmitted to the connecting rod 28, so that the connecting rod 28 rotates, the cam 29 fixedly installed on the connecting rod 28 rotates accordingly, when the protruding part of the cam 29 turns downward, it will press the supporting roller 26 at the top end of the dredging rod 25, overcome the elastic force of the reset spring 27, and push the dredging rod 25 to move downward, the rod end of the dredging rod 25 is inserted into the material pile above the feeding port of the conveying cylinder 18, and a dredging and pushing operation is performed, when the protruding part of the cam 29 turns away, under the action of the reset spring 27, the dredging rod 25 quickly returns to the original position, thus the dredging rod 25 realizes up and down reciprocating movement, continuously pushes the agricultural film fragments into the inlet of the conveying cylinder 18, and effectively prevents the material from bridging or blocking at the inlet.

[0045] In the further preferred embodiment of the present application, the support plate 24 is provided with a protective cover 32 for protecting the reset spring 27 and the cam 29, the protective cover 32 is fixedly connected with one side of the partition plate 17, and one side of the processing cavity is fixedly provided with a fixed cover 33 for protecting the differential gears 30 and the transmission chain 31, the fixed cover 33 is rotatably connected with the connecting rod 28.

[0046] In the present embodiment, the protective cover 32 completely covers the cam 29, the supporting roller 26 and the reset spring 27, effectively preventing the agricultural film fragments from winding or foreign matters from interfering to cause the mechanism to be stuck, and the fixed cover 33 installed on the side wall of the processing cavity encloses the differential gears 30 and the transmission chain 31, avoiding the chain from being off track, stuck and other failures caused by contacting with the material during operation.

[0047] The processing cavity is provided with a crushing mechanism for crushing large pieces of agricultural film fragments, the crushing mechanism comprises: a receiving hopper 34 fixedly installed on the top of the storage tank 3; a collecting hopper 35 installed on the top of the processing cavity, the collecting hopper 35 is located below the receiving hopper 34; a group of coarse crushing rollers 36 and a group of fine crushing rollers 37 for crushing large pieces of agricultural film fragments are rotatably installed in the collecting hopper 35, and the group of fine crushing rollers 37 is located below the coarse crushing rollers 36; a connecting gear 39 is sleeved on the rotating shaft of the group of coarse crushing rollers 36 and fine crushing rollers 37 and is engaged with a gear on the other rotating shaft; and a connecting mechanism is arranged on the storage tank 3 and the first rotating rod 10 for transmitting power and realizing synchronous rotation.

[0048] In this embodiment, due to the inevitable large pieces of agricultural film fragments in the agricultural film fragments, before the agricultural film fragments are discharged into the receiving hopper 34 by the external conveying belt or other conveying system, first, the first motor 8 is started, so that the entire device starts to run, when running, the agricultural film fragments enter the collecting hopper 35 through the receiving hopper 34, in the collecting hopper 35, the material first passes through a group of relatively rotating coarse crushing rollers 36 for preliminary tearing and crushing, then, the crushed smaller fragments fall between a pair of fine crushing rollers 37 with higher rotating speed, and are further ground into smaller and more uniform fragments, the power source of the entire crushing process comes from the first motor 8; through the arrangement of the connecting mechanism, the power of the first motor 8 is transmitted to the coarse and fine crushing rollers, and synchronous rotation of them is ensured, through differential design, the rotating speed of the fine crushing rollers 37 is higher than that of the coarse crushing rollers 36, so that a hierarchical and efficient crushing effect is realized, and the size of the agricultural film fragments finally entering the processing cavity is suitable for melt extrusion.

[0049] In the further preferred embodiment of the application, the connecting mechanism comprises: a first differential gear 40 fixedly sleeved on the rotating shaft of any gear in the two groups of connecting gears 39, a group of the first differential gears 40 are engaged to synchronously drive the coarse crushing rollers 36 and the fine crushing rollers 37 to rotate; a second rotating rod 41 rotatably installed on one side of the storage tank 3; a second differential sprocket 42 fixedly sleeved on the second rotating rod 41 and the first rotating rod 10; a second chain 43 sleeved on a group of the second differential sprockets 42, the second chain 43 is engaged with a group of the second differential sprockets 42; and a second bevel gear 44 fixedly sleeved on the other end of the second rotating rod 41 and the rotating shaft of any connecting gear 39, a group of the second bevel gears 44 are engaged.

[0050] In the embodiment, the rotating force driven by the first motor 8 is transmitted to the first rotating rod 10 through the first bevel gear 11, and the second rotating rod 41 is driven to rotate through the second differential chain wheel 42 and the second chain 43 on the first rotating rod 10, the second bevel gear 44 at the other end of the second rotating rod 41 is engaged with another second bevel gear 44 fixed on the rotating shaft of the connecting gear 39, and the power is introduced into the crushing roller system, the two roller shafts of each group of coarse and fine crushing rollers are provided with the connecting gears 39 engaged with each other, so that the two rollers in the same group rotate towards each other, and the coarse crushing roller 36 group and the fine crushing roller 37 group are connected through a group of first differential gears 40 engaged with each other, the differential gears have a specific gear ratio, so that the rotating speed of the fine crushing roller 37 is higher when the power is transmitted to the fine crushing roller 37, and finally the cooperative working mode of the coarse crushing roller 36 with low speed and high torque for coarse crushing and the fine crushing roller 37 with high speed for fine crushing is realized.

[0051] In the further preferred embodiment of the application, the bottom of the processing cavity and the bottom of the storage cavity are provided with inclined racks 38 with elastic function, the material of the inclined racks 38 is elastic steel plate, and the top of the mixing box 6 is fixedly provided with a first protective cover 45 for protecting the first motor 8, the linkage mechanism and the second differential chain wheel 42.

[0052] In the embodiment, the inclined rack 38 is made of elastic steel plate and is composed of a vertical part and an inclined part, the bottom of the vertical part is fixedly connected with the bottom of the inner wall of the storage tank 3, the inclination angle of the inclined rack 38 facilitates the material to slide to the inlet of the conveying cylinder 18 at the bottom under the action of gravity, the elastic material provides a basis for subsequent high-frequency shaking, and the first protective cover 45 installed on the top of the mixing box 6 covers the high-speed rotating transmission components such as the first motor 8, the linkage mechanism and the second differential chain wheel 42 of the connecting mechanism, which plays an important role in dust prevention, foreign matter invasion prevention and safety protection.

[0053] In order to further improve the use effect of the device, in addition to the above-mentioned scheme, the present scheme also has the following embodiments:

[0054] In another embodiment of the application, the bottom of the processing cavity and the bottom of the storage cavity are provided with a shaking mechanism for shaking the inclined rack 38 and assisting the material to be discharged, the shaking mechanism comprises: a support block 46 fixedly installed at the bottom of the processing cavity and the storage cavity for supporting the inclined rack 38, the top of the support block 46 is provided in an inclined manner, and a buffer pad is installed on the top of the support block 46; a hammer rod 47 rotatably installed in the storage tank 3 for shaking the inclined rack 38, the hammer rod 47 is located below the inclined rack 38; a support spring 48 fixedly installed on the bottom of the inner wall of the storage tank 3, the top end of the support spring 48 is fixedly connected with the inclined rack 38; a driving mechanism arranged on one side of the storage tank 3 for driving the hammer rod 47 to rotate.

[0055] In the embodiment, the lower part of the inclined frame 38 is supported by the supporting spring 48, so as to become an elastically vibrating inclined surface. Under the drive of the driving mechanism, the hammer rod 47 located below the inclined frame 38 continuously rotates, and the hammer head part on the hammer rod 47 periodically strikes the back surface of the inclined frame 38. Each time of striking makes the inclined frame 38 produce an upward displacement and vibration, so as to shake off the adhered material on the inclined frame 38, and make the material accelerate to slide to the conveying cylinder 18. The buffer pad on the top of the supporting block 46 is used to limit the excessive vibration and displacement of the inclined frame 38, prevent the permanent deformation of the inclined frame 38, and also can absorb part of the impact energy and reduce the noise.

[0056] In another embodiment of the present application, the driving mechanism comprises: a connecting sprocket 49 fixedly sleeved on the rotating shafts of the two hammer rods 47; a connecting chain 50 sleeved on the two connecting sprockets 49, and engaged with the two connecting sprockets 49; second differential gears 51 respectively installed on one side of the storage tank 3 and the rotating shafts of any of the hammer rods 47, and engaged with each other; an engaging gear 52 rotatably installed on one side of the storage tank 3, and engaged with the first differential gear 40; third differential sprockets 53 fixedly sleeved on the rotating shafts of the second differential gears 51 and the engaging gear 52 located on the storage tank 3; and a third chain 54 sleeved on the third differential sprockets 53, and engaged with the third differential sprockets 53.

[0057] In the embodiment, when the first differential gear 40 rotates, the engaging gear 52 engaged with the first differential gear 40 rotates, and through the third differential sprockets 53 and the third chain 54 fixedly sleeved on the same shaft, the power is transmitted to another third differential sprocket 53 on the shaft of the driving mechanism, the second differential gear 51 on the shaft is engaged with another second differential gear 51 fixedly sleeved on the rotating shaft of the hammer rod 47, and the rotating motion is transmitted to one of the hammer rods 47. In order to ensure that the two inclined frames 38 at the bottom of the processing cavity and the storage cavity are synchronously struck, the rotating shafts of the two hammer rods 47 are linked through the connecting sprocket 49 and the connecting chain 50, so as to ensure the synchronous rotation of the two hammer rods 47. Thus, the whole material shaking action is interlocked with the main crushing process, and an additional power source is not needed.

[0058] In another embodiment of the present application, the top of the storage tank 3 is fixedly installed with a cover 55, the cover 55 covers the material receiving hopper 34 for reducing the agricultural film fragments from flying out, a connecting frame 56 is installed on one side of the inner wall of the cover 55, an arc-shaped filter screen 57 is installed on the inner side of the connecting frame 56, a second vacuum pump 58 is fixedly installed on the top of the storage tank 3, the air suction end of the second vacuum pump 58 is connected with the connecting frame 56, and the second vacuum pump 58 is used to adsorb the suspended agricultural film fragments on the arc-shaped filter screen 57.

[0059] In the embodiment, some light and thin agricultural film fragments are easily floated in the air in the cover 55 under the action of the airflow in the crushing process, which not only causes material loss, but also may affect the working environment. Therefore, a dust removal system is arranged in the cover 55, and the arc-shaped filter screen 57 in the connecting frame 56 constitutes a filtering surface. After the second vacuum pump 58 is started, the air in the connecting frame 56 is continuously pumped out, so that a stable negative pressure airflow is generated in the cover 55. The floating agricultural film fragments are adsorbed on the outer surface of the arc-shaped filter screen 57 under the guidance of the airflow, so that the separation of the air and the fragments is realized, and the air in the cover 55 is purified.

[0060] In another embodiment of the application, a scraper 59 for cleaning the agricultural film fragments on the arc-shaped filter screen 57 is rotatably arranged in the cover 55. The scraper 59 is provided with a sawtooth 60 on one side. The sawtooth 60 is in rotational contact with the surface of the arc-shaped filter screen 57. Fourth differential chain wheels 61 are fixedly arranged on the rotation shafts of the scraper 59 and any first differential gear 40. Fourth chains 62 are arranged on the two fourth differential chain wheels 61. A second protective cover 63 for protecting the first differential gear 40, the connecting sprocket 49 and the connecting chain 50 is arranged on one side of the storage box 3.

[0061] In the embodiment, in order to prevent the fragments adsorbed on the arc-shaped filter screen 57 from blocking the filter screen aperture and affecting the air pumping efficiency, the power of the scraper 59 also comes from the first differential gear 40 of the crushing mechanism. The power of the first differential gear 40 is transmitted to the rotation shaft of the scraper 59 through the fourth differential chain wheel 61 and the fourth chain 62 on the rotation shaft. The scraper 59 slowly rotates, the sawtooth 60 arranged on the edge of the scraper 60 keeps contact with and moves relative to the surface of the arc-shaped filter screen 57. The rotating sawtooth 60 is like a comb, which scrapes the adsorbed agricultural film fragments from the arc-shaped filter screen 57. The scraped fragments fall back to the material receiving hopper 34 below under the action of gravity, re-enter the processing flow, realize the recycling of the fragments and the continuous self-cleaning of the arc-shaped filter screen 57, and the second protective cover 63 is used for protecting the transmission components such as the first differential gear 40, the connecting sprocket 49 and the connecting chain 50.

[0062] In summary, compared with the related art, the device effectively solves the problems of the light and fluffy agricultural film that is easy to block and float by combining the anti-pre-melting block, the negative pressure suction and the mechanical dredging, and effectively improves the quality consistency of the regenerated plastic particles.

[0063] In the several embodiments provided in the application, it should be understood that the disclosed device can be implemented in other ways.

[0064] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the protection scope of the present application. Obviously, the described examples are only some of the embodiments of the present application, but not all the embodiments. Based on these examples, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application. Although the present application is described in detail with reference to the above examples, those of ordinary skill in the art can still combine, add or delete the features in the embodiments of the present application according to the circumstances without creative work, so as to obtain different other technical solutions which do not deviate from the concept of the present application in essence, and these technical solutions also fall within the scope of the present application.

Claims

1. An agricultural waste agricultural film recycling melting device, characterized by, The utility model relates to a kind of agricultural film melt processing extruders, including: Extruder for melt processing of agricultural film fragments; Feed hopper mounted on the extruder; Storage box is arranged on the side of the extruder, for classified storage of agricultural film and color master batch to be processed; Feeding mechanism is arranged on the feed hopper, for maintaining the stable material level of feed hopper, ensuring continuous and stable feeding, the feeding mechanism includes: feed pipe is arranged on the feed hopper;First auger is rotatably installed in the feed pipe, for conveying material to the hopper mouth of feed hopper;Mixing box is fixedly installed on the top of the feed hopper, for uniformly mixing agricultural film and color master batch;Stirring rod is rotatably installed in the mixing box, for stirring and mixing agricultural film and color master batch;First motor is fixedly installed on the top of the mixing box, for synchronously driving stirring rod and first auger to operate, the output shaft of the first motor is fixedly connected with the stirring rod through coupling; Linkage mechanism is arranged on the rotating shaft of the stirring rod and the first auger, for transmitting power and realizing synchronous rotation of the two; Conveying mechanism is arranged on the storage box, for conveying material into the mixing box.

2. The agricultural waste agricultural film recycling melting apparatus of claim 1, wherein, The linkage mechanism includes: connecting cover is fixedly installed on the bottom of the mixing box and rotatably connected with the rotating shaft of the first auger;First rotating rod is rotatably arranged on the mixing box and the connecting cover respectively;Two groups of first bevel gears are installed on a group of first rotating rods, first auger and stirring rod respectively, and the two first bevel gears are engaged;First differential chain wheels are fixedly sleeved on a group of first rotating rods, and a first chain is sleeved on a group of differential chain wheels.

3. The agricultural waste agricultural film recycling melting apparatus of claim 1, wherein The outer side of the feed pipe is sleeved with a jacket, a water pipe is installed on the jacket, the jacket is used to prevent the material in the feed pipe from softening and sticking together too early, a connecting ring is fixedly sleeved on the jacket, and the connecting ring is connected with the connecting sheet on one side of the feed hopper through fastening bolts.

4. The agricultural waste agricultural film recycling melting apparatus of claim 1, wherein The conveying mechanism includes: a partition plate is fixedly installed in the storage box, the partition plate separates the storage box into a storage cavity for storing color master batch and a processing cavity for storing agricultural film;A group of conveying barrels are fixedly installed on the bottom of the storage box and respectively connected with the processing cavity and the storage cavity, and the conveying barrels are fixedly connected with the mixing box;Second augers are installed in a group of conveying barrels for conveying material;Second motor is fixedly installed on one side of the conveying barrel for driving the second auger to rotate, and the output shaft of the coupling of the second motor is fixedly connected with the second auger;Suction mechanism is arranged on the conveying barrel below the processing cavity for assisting agricultural film feeding.

5. The agricultural waste agricultural film recycling melting apparatus of claim 4, wherein, The suction mechanism includes: air port is opened in the bottom of the conveying barrel, and a screen is installed in the air port;Suction hopper is fixedly installed on the bottom of the conveying barrel, and the suction hopper is connected with the air port;First vacuum pump is fixedly installed on the bottom of the storage box, and the suction pipe of the first vacuum pump is connected with the suction hopper.

6. The agricultural waste agricultural film recycling melting apparatus of claim 4, wherein, The processing cavity is provided with a dredging mechanism for assisting the agricultural film to be discharged into the conveying cylinder, the dredging mechanism comprises: a support plate fixedly installed on one side of the partition plate; a dredging rod slidably installed on the support plate, the dredging rod is arranged in an inclined manner and located above the conveying cylinder; a supporting roller fixedly installed at the top end of the dredging rod; a reset spring sleeved on the dredging rod for resetting the dredging rod, the two ends of the reset spring are in contact with the supporting roller and the support plate respectively; a connecting rod rotatably installed on the storage tank, a cam for driving the dredging rod to move up and down is sleeved on the connecting rod, the surface of the cam is in contact with the supporting roller; a transmission mechanism provided on the connecting rod and the second auger shaft for transmitting power and realizing synchronous rotation, the transmission mechanism comprises: differential gears fixedly sleeved on the connecting rod and the second auger shaft respectively; a transmission chain sleeved on a group of the differential gears, the transmission chain is engaged with a group of the differential gears.

7. The agricultural waste agricultural film recycling melting apparatus of claim 6, wherein, The support plate is provided with a protective cover for protecting the reset spring and the cam, the protective cover is fixedly connected with one side of the partition plate, one side of the processing cavity is fixedly provided with a fixed cover for protecting the differential gears and the transmission chain, and the fixed cover is rotatably connected with the connecting rod.

8. The agricultural waste agricultural film recycling melting apparatus of claim 4, wherein, The processing cavity is provided with a crushing mechanism for crushing large agricultural film fragments, the crushing mechanism comprises: a receiving hopper fixedly installed on the top of the storage tank; a collecting hopper installed on the top of the processing cavity, the collecting hopper is located below the receiving hopper; a group of coarse crushing rollers and a group of fine crushing rollers rotatably installed in the collecting hopper for crushing large agricultural film fragments, and a group of the fine crushing rollers are located below the coarse crushing rollers; connecting gears sleeved on the shafts of a group of the coarse crushing rollers and the fine crushing rollers and engaged with the gears on the other shafts of the same group; a connecting mechanism provided on the storage tank and the first rotating rod for transmitting power and realizing synchronous rotation.

9. The agricultural waste agricultural film recycling melting apparatus of claim 8, wherein, The connecting mechanism comprises: first differential gears fixedly sleeved on the shafts of any gear in the two groups of connecting gears, a group of the first differential gears are engaged to synchronously drive the coarse crushing rollers and the fine crushing rollers to rotate; a second rotating rod rotatably installed on one side of the storage tank; second differential sprockets fixedly sleeved on the second rotating rod and the first rotating rod; a second chain sleeved on a group of the second differential sprockets, the second chain is engaged with a group of the second differential sprockets; second bevel gears fixedly sleeved on the other end of the second rotating rod and the shaft of any connecting gear, a group of the second bevel gears are engaged.

10. The agricultural waste agricultural film recycling melting apparatus of claim 4, wherein, The bottom of the processing cavity and the storage cavity is provided with an inclined frame with elastic function, the material of the inclined frame is elastic steel plate, and the top of the mixing box is fixedly provided with a first protective cover for protecting the first motor, the linkage mechanism and the second differential sprocket.

Images