A crushing device for processing plastic waste

Abstract

The invention discloses a pulverizing device for processing plastic waste, which relates to the field of plastic waste pulverizing equipment, and comprises a stepped bracket, wherein a discharging funnel and a blade structure are respectively installed above the stepped bracket, wherein the blade structure comprises two groups of symmetrically arranged blade wheels, wherein the blade wheels rotate in opposite directions, and a limit baffle is provided above the blade wheels, and a kneading structure is provided above the limit baffle, wherein the kneading structure comprises a kneading plate and a rocker, wherein the kneading plate comprises two groups of symmetrically arranged kneading plates and are both installed on the rocker, and the kneading plates are fixedly installed on the bracket, and a cutting device is provided in the bracket, wherein the cutting device comprises a plurality of groups of cutting knives arranged side by side in parallel, and the cutting knives are on the bracket and can move with the bracket. The invention can re-crush plastic bag products with quality problems, recycle and reuse them, and reduce the difficulty of subsequent plastic re-granulation.

Description

Technical Field

[0001] The invention relates to the field of plastic waste crushing equipment, in particular to a crushing device for processing plastic waste. Background Art

[0002] Plastic products are widely used, and various types of plastic bags are very representative. They are widely used because of their low price, extremely light weight, large capacity and easy storage. Due to the large demand, their annual output is also very large.

[0003] In the production of plastic bags, due to the differences in production processes, equipment parameters, materials and quality requirements of various products, a large number of scrapped products are often produced and cannot be shipped normally. Direct scrapping will cause great production waste and environmental pollution. Therefore, it is considered to crush them and re-make them into plastic particles for reuse. However, the plastic bags themselves are light. When they are crushed by various crushing equipment in the prior art, such as extrusion type and blade type crushers, the airflow generated by the high-speed running equipment will cause the plastic bags to fly around in the equipment, and they cannot enter the blades and leaves normally for crushing. In addition, these plastic bags will sometimes be entangled on the rotating shaft, blades, and blades, affecting the operation of the equipment. Summary of the invention

[0004] The object of the present invention is to provide a pulverizing device for processing plastic waste to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a pulverizing device for processing plastic waste, comprising a stepped bracket, a discharge hopper and a blade structure are respectively installed above the stepped bracket;

[0006] The blade structure comprises two groups of symmetrically arranged blade wheels, the blade wheels rotate in opposite directions, and a limit baffle is provided above the blade wheels;

[0007] A kneading structure is provided above the limit baffle;

[0008] The kneading structure includes a kneading plate and a rocker, wherein the kneading plates are provided in two groups symmetrically arranged and both are mounted on the rocker, and the kneading plates are fixedly mounted on the bracket;

[0009] A cutter device is provided in the support, and the cutter device includes a plurality of groups of cutters arranged in parallel, and the cutters are on the support and can move with the support;

[0010] A discharge pipe is arranged directly below the discharge funnel, a crushing cylinder is arranged above the discharge funnel, and a funnel is arranged directly above the crushing cylinder.

[0011] Preferably, the stepped support comprises a discharge funnel support frame and a blade structure support frame, and the height of the blade structure support frame is higher than that of the discharge funnel support frame.

[0012] Preferably, the bottom of the discharge hopper is fixedly connected to the top of the discharge pipe through a mounting flange.

[0013] Preferably, the blade wheel includes a blade wheel, a sealing sleeve, a mounting gasket and a motor power group, the blade wheel is fixed on the sealing sleeve, the mounting gasket is installed at the rear of the blade wheel to seal the crushing barrel, the sealing sleeve is fixed on the motor power group, a blade is provided on the blade wheel, the blade includes a supporting part and a cutting edge part, the supporting part is used to support the cutting edge part.

[0014] Preferably, the motor power group includes a motor, a rotating shaft and a support seat, the motor is fixed on the blade structure support frame, the rotating shaft is fixed on the output shaft of the motor, and the support seat is fixed on the blade structure support frame to support the rotating shaft.

[0015] Preferably, the kneading board comprises a bottom plate and a plurality of evenly arranged hemispherical wear-resistant protrusions arranged on the bottom plate, and the protrusions symmetrically arranged on the two kneading boards do not contact each other.

[0016] Preferably, the rocker is provided with a first rocker and a second rocker which are set in opposite directions, the first rocker is hingedly connected to a first connecting rod, the second rocker is hingedly connected to a second connecting rod, the first connecting rod and the second connecting rod are respectively connected to two brackets, and an elastic suspension rod which is arranged parallel to the first connecting rod and the second connecting rod is provided above the bracket, and the top of the elastic suspension rod is fixedly connected to the crushing barrel.

[0017] Preferably, the bracket is of a hollow structure, with both ends of the bracket connected to a sealing elastic cover plate, an isolation cover is provided on the outer side of the sealing elastic cover plate, an air pipe is provided in the isolation cover, the air pipe is connected to the bracket, a guide wheel is provided on the back of the bracket, the guide wheel is slidably connected in a guide plate, and a track groove is provided in the guide plate to provide guidance for the guide wheel.

[0018] Preferably, the cutter device includes a cutter, a cutter shaft and a counterweight. When the cutter is in a free state, it is in a vertical state due to the gravity of the counterweight and is located in a corresponding gap in the kneading plate. Both ends of the cutter shaft are fixedly mounted in a bracket, and the bottom of the cutter is rotatably mounted on the cutter shaft. The counterweight is fixedly mounted on the back of the cutter and is provided with an inclined surface passing through the side wall of the bracket.

[0019] Preferably, a supporting inclined surface is provided on the limit baffle, and the inclined surface and the supporting inclined surface can be pressed and contacted with each other when the bracket moves downward.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The invention can crush plastic bags with quality problems, recycle them and reduce the difficulty of subsequent plastic re-granulation;

[0022] 2. The kneading plates provided in the invention can knead the input plastic bag products into spheres or cylinders through the relative movement between the two kneading plates, and at the same time compress the volume and increase the weight of the plastic bag per unit volume, so as to prevent the airflow of the equipment from causing the plastic bag to fly around. At the same time, the spheres or cylinders with a certain weight can bear the force better and are easy to crush. More waste can also be added to the crushing barrel in the same time, so as to improve the efficiency;

[0023] 3. The cutting device provided in the invention is linked with the kneading plate and the limit baffle, and the excessively long waste materials will be cut during the kneading process to prevent them from being entangled with the cutting knife or the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 A top view of the present invention;

[0026] Figure 3 for Figure 2 Sectional structure diagram at inner AA;

[0027] Figure 4 for Figure 2 Sectional structure diagram of the inner BB;

[0028] Figure 5 It is a schematic diagram of the limit baffle, kneading structure, and cutting device structure;

[0029] Figure 6 It is a schematic diagram of the kneading structure, the kneading plate and the cutting device structure.

[0030] In the figure: 1- step support; 11- discharge funnel support frame; 12- blade structure support frame;

[0031] 2-Discharging funnel;

[0032] 3-blade structure; 31-blade wheel; 311-rotating wheel; 312-sealing sleeve; 313-mounting gasket; 315-blade;

[0033] 36-motor power unit; 361-motor; 362-rotating shaft; 364-support seat;

[0034] 4-limit baffle; 41-supporting inclined plane;

[0035] 5-kneading structure; 51-kneading plate; 52-rocker; 521-first rocker; 522-second rocker; 523-first connecting rod; 524-second connecting rod;

[0036] 53- bracket; 54- sealing elastic cover plate; 55- isolation cover; 56- air pipe; 57- guide wheel; 58- guide plate; 59- elastic suspension rod;

[0037] 6-cutter device; 61-cutter; 62-cutter shaft; 63-weight block; 631-inclined surface;

[0038] 7-discharging pipe; 8-crushing cylinder; 9-funnel. DETAILED DESCRIPTION

[0039] 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.

[0040] See also Figures 1 to 6 The present invention provides a technical solution: a pulverizing device for processing plastic waste, comprising a step bracket 1, a discharge hopper 2 and a blade structure 3 are respectively installed above the step bracket 1, and a valve is arranged on a discharge pipe 7 on the discharge hopper 2 to facilitate the centralized discharge of the pulverized waste;

[0041] The blade structure 3 includes two groups of symmetrically arranged blade wheels 31, the blade wheels 31 rotate in opposite directions, and a limit baffle 4 is provided above the blade wheels 31. The reversely rotating blade wheels 31 can, while cutting and crushing, form a certain pulling force on the long strips of plastic bags that fall on the two groups of blade wheels 31 at the same time, tearing them apart to prevent incomplete crushing;

[0042] A kneading structure 5 is provided above the limit baffle 4;

[0043] The kneading structure 5 includes a kneading plate 51 and a rocker 52. The kneading plates 51 are provided with two groups symmetrically arranged and are both mounted on the rocker 52. The kneading plates 51 are fixedly mounted on a bracket 53. The two kneading plates 51 driven by the rocker 52 make circular motions relative to each other, and the plurality of plastic bags entering between the two kneading plates 51 through the funnel 9 are kneaded into a ball or strip shape by the motion.

[0044] The bracket 53 is provided with a cutter device 6, which includes a plurality of groups of cutters 61 arranged in parallel. The cutters 61 are on the bracket 53 and can move with the bracket 53. In the process of moving with the bracket 53, the cutters 61 extend out of the kneading board 51 through the cooperation with the limit baffle 4, and cut the strip plastic kneaded between the kneading boards 51 to facilitate its crushing.

[0045] A discharge pipe 7 is provided directly below the discharge funnel 2, a crushing cylinder 8 is provided above the discharge funnel 2, and a funnel 9 is provided directly above the crushing cylinder 8. The funnel 9 is used for adding waste materials, and the discharge pipe 7 is used for discharging the crushed waste materials.

[0046] In this embodiment, the step bracket 1 includes a discharge funnel support frame 11 and a blade structure support frame 12. The height of the blade structure support frame 12 is higher than the discharge funnel support frame 11. The step bracket 1 is used to install the entire device.

[0047] In this embodiment, the bottom of the discharge hopper 2 is fixedly connected to the top of the discharge pipe 7 through a mounting flange, and the detachable structure is convenient for maintenance.

[0048] In this embodiment, the blade wheel 31 includes a rotating wheel 311, a sealing sleeve 312, a mounting gasket 313 and a motor power group 36. The rotating wheel 311 is fixed on the sealing sleeve 312. The mounting gasket 313 is installed at the rear of the rotating wheel 311 to seal the crushing barrel 8. The sealing sleeve 312 is fixed on the motor power group 36. A blade 315 is provided on the rotating wheel 311. The blade 315 includes a supporting portion and a cutting edge portion. The supporting portion is used to support the cutting edge portion. The blade wheel 31 is driven by the motor power group 36 to rotate at a high speed, and the waste is cut and crushed by the cutting edge portion of the blade 315. The provided supporting portion is used to support the cutting edge portion.

[0049] In this embodiment, the motor power group 36 includes a motor 361, a rotating shaft 362 and a support seat 364. The motor 361 is fixed on the blade structure support frame 12, the rotating shaft 362 is fixed on the output shaft of the motor 361, and the support seat 364 is fixed on the blade structure support frame 12 to support the rotating shaft 362. The rotating shaft 362 is driven to rotate by the motor 361, thereby driving the blade wheel 31 to rotate. At the same time, the motors 361 arranged on both sides will make the blade wheel 31 rotate in opposite directions.

[0050] In this embodiment, the kneading plate 51 includes a bottom plate and a plurality of evenly arranged hemispherical wear-resistant protrusions arranged on the bottom plate. The protrusions symmetrically arranged on the two kneading plates 51 do not contact each other. The friction force is increased by setting a plurality of protrusions, thereby improving the kneading efficiency.

[0051] In this embodiment, the rocker 52 is provided with a first rocker 521 and a second rocker 522 which are set in opposite directions. The first rocker 521 is hingedly connected to a first connecting rod 523, and the second rocker 522 is hingedly connected to a second connecting rod 524. The first connecting rod 523 and the second connecting rod 524 are respectively connected to two brackets 53. An elastic suspension rod 59 which is arranged parallel to the first connecting rod 523 and the second connecting rod 524 is provided above the bracket 53. The top of the elastic suspension rod 59 is fixedly connected to the crushing barrel 8. The rocker 52 is driven by an externally arranged motor. When the rocker 52 rotates, the first rocker 521 and the second rocker 522 always maintain opposite relative positions. This enables the connected first connecting rod 523 and the second connecting rod 524 to drive the kneading plate 51 to move toward opposite positions, maintain relative circular motion between the two, and thereby generate kneading force.

[0052] In this embodiment, the bracket 53 is a hollow structure, and both ends of the bracket 53 are connected to a sealing elastic cover plate 54. An isolation cover 55 is provided on the outer side of the sealing elastic cover plate 54. An air pipe 56 is provided in the isolation cover 55, and the air pipe 56 is connected to the bracket 53. A guide wheel 57 is provided on the back of the bracket 53. The guide wheel 57 is slidably connected in a guide plate 58. A track groove is provided in the guide plate 58 to provide guidance for the guide wheel 57. Constant temperature gas is introduced into the hollow structure through the air pipe 56 to maintain the temperature of the kneading plate 51 to prevent the friction generated by kneading from causing high temperature burns to the plastic bag product. The sealing elastic cover plate 54 can be compressed and expanded to provide space for the bracket 53 to move left and right. At the same time, the isolation cover 55 has a certain inner diameter. During the movement of the bracket 53, the air pipe 56 made of a hose material can move in the isolation cover 55. Finally, the guide wheel 57 can provide guidance and limit for the movement of the bracket 53.

[0053] In this embodiment, the cutter device 6 includes a cutter 61, a cutter shaft 62 and a counterweight 63. The cutter 61 is in a vertical state under the influence of the gravity of the counterweight 63 in a free state and is located in a corresponding gap in the rubbing plate 51. The two ends of the cutter shaft 62 are fixedly installed in the bracket 53. The bottom of the cutter 61 is rotatably installed on the cutter shaft 62. The counterweight 63 is fixedly installed on the back of the cutter 61 and is provided with an inclined surface 631 passing through the side wall of the bracket 53. The limit baffle 4 is provided with a supporting inclined surface 41, and the inclined surface 631 and the supporting inclined surface 41 are connected. When the bracket 53 moves downward, they can squeeze and contact each other. When the bracket 53 is driven to rise, the bracket 53 is away from the limit baffle 4, and the inclined surface 631 is separated from the supporting inclined surface 41. Under the gravity of the counterweight 63, the cutter 61 gradually retreats into the rubbing plate 51. When the bracket 53 descends, the inclined surface 631 starts to contact the supporting inclined surface 41, and the inclined surface 631 is squeezed by the supporting inclined surface 41, forcing the cutter 61 to rotate out of the rubbing plate 51, cutting the rubbed strip waste between the two rubbing plates 51, so that the waste forms an independent spherical shape.

[0054] Working principle: When in use, first add the plastic bag waste into the crushing cylinder 7 through the funnel 9, and the entering plastic bag waste will first enter between the kneading plates 51 on both sides, and the waste will be kneaded into a spherical or strip shape between the kneading plates 51 through the rotation of the rocker 52 driven by the motor 361. Then, in the process of the kneading plates 51 driven by the bracket 53 to move, the cutter 61 will be forced to rotate out of the kneading plates 51 through the cooperation with the limit baffle 4, and the kneaded strip waste between the kneading plates 51 on both sides will be cut to facilitate the waste to form an independent spherical shape. Then, the kneaded waste will fall onto the blade wheel 31 below and be cut and crushed by the blade 315 to complete the processing of the waste.

[0055] Based on the above, the invention can re-crush plastic bag products with quality problems, recycle and reuse them, and reduce the difficulty of subsequent plastic re-granulation; the kneading plates provided in the invention can rub the input plastic bag products into spheres or cylinders through the relative movement between the two kneading plates, while compressing the volume and increasing the weight of the plastic bags per unit volume, preventing the airflow of the equipment from causing the plastic bags to fly around, and at the same time, spheres or cylinders with a certain weight can better withstand the force and are easy to crush, and more waste can be added to the crushing barrel in the same time, thereby improving efficiency; the cutting knife device provided in the invention is linked with the kneading plates and the limit baffle, and the excessively long waste will be cut during the kneading process to prevent it from being entangled with the cutting knife or the rotating shaft.

[0056] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A pulverizing device for processing plastic waste, characterized in that: It comprises a stepped support (1), and a discharge funnel (2) and a blade structure (3) are respectively installed above the stepped support (1); The blade structure (3) comprises two groups of symmetrically arranged blade wheels (31), the blade wheels (31) rotate in opposite directions, and a limit baffle (4) is provided above the blade wheels (31); A kneading structure (5) is provided above the limit baffle (4); The kneading structure (5) comprises a kneading plate (51) and a rocker (52); the kneading plate (51) is provided with two groups of symmetrically arranged plates and both are mounted on the rocker (52); the kneading plate (51) is fixedly mounted on a bracket (53); A cutter device (6) is provided in the support (53), the cutter device (6) comprising a plurality of groups of cutters (61) arranged in parallel side by side, the cutters (61) being on the support (53) and being able to move with the support (53); A discharge pipe (7) is provided directly below the discharge funnel (2), a crushing cylinder (8) is provided above the discharge funnel (2), and a funnel (9) is provided directly above the crushing cylinder (8); The kneading plate (51) comprises a bottom plate and a plurality of evenly arranged hemispherical wear-resistant protrusions arranged on the bottom plate, wherein the protrusions symmetrically arranged on the two kneading plates (51) do not contact each other; The rocker (52) is provided with a first rocker (521) and a second rocker (522) which are arranged in opposite directions; the first rocker (521) is hingedly connected to a first connecting rod (523); the second rocker (522) is hingedly connected to a second connecting rod (524); the first connecting rod (523) and the second connecting rod (524) are respectively connected to two brackets (53); an elastic suspension rod (59) is provided above the bracket (53) and is arranged parallel to the first connecting rod (523) and the second connecting rod (524); the top of the elastic suspension rod (59) is fixedly connected to the crushing barrel (8); The bracket (53) is a hollow structure, and both ends of the bracket (53) are connected to a sealing elastic cover plate (54). An isolation cover (55) is provided on the outer side of the sealing elastic cover plate (54), and an air pipe (56) is provided in the isolation cover (55). The air pipe (56) is connected to the bracket (53). A guide wheel (57) is provided on the back of the bracket (53), and the guide wheel (57) is slidably connected to a guide plate (58). A track groove is provided in the guide plate (58) to provide guidance for the guide wheel (57); The cutter device (6) comprises a cutter (61), a cutter shaft (62) and a counterweight (63); the cutter (61) is in a vertical state under the influence of the gravity of the counterweight (63) in a free state and is located in a corresponding gap in the rubbing plate (51); both ends of the cutter shaft (62) are fixedly mounted in the bracket (53); the bottom of the cutter (61) is rotatably mounted on the cutter shaft (62); the counterweight (63) is fixedly mounted on the back of the cutter (61) and is provided with an inclined surface (631) that passes through the side wall of the bracket (53); The limit baffle (4) is provided with a supporting inclined surface (41), and the inclined surface (631) and the supporting inclined surface (41) are capable of being pressed and contacted with each other when the bracket (53) moves downward; When the support (53) drives the rubbing plate (51) to move, the cutter (61) is forced to rotate out of the rubbing plate (51) through cooperation with the limit baffle (4).

2. A pulverizing device for processing plastic waste according to claim 1, characterized in that: The stepped support (1) comprises a discharge funnel support frame (11) and a blade structure support frame (12), wherein the height of the blade structure support frame (12) is higher than that of the discharge funnel support frame (11).

3. A pulverizing device for processing plastic waste according to claim 1, characterized in that: The bottom of the discharge hopper (2) is fixedly connected to the top of the discharge pipe (7) via a mounting flange.

4. A pulverizing device for processing plastic waste according to claim 1, characterized in that: The blade wheel (31) comprises a rotating wheel (311), a sealing sleeve (312), a mounting gasket (313) and a motor power group (36); the rotating wheel (311) is fixed on the sealing sleeve (312); the mounting gasket (313) is installed behind the rotating wheel (311) and is used to seal the crushing cylinder (8); the sealing sleeve (312) is fixed on the motor power group (36); a blade (315) is provided on the rotating wheel (311); the blade (315) comprises a supporting portion and a cutting edge portion; the supporting portion is used to support the cutting edge portion.

5. A pulverizing device for processing plastic waste according to claim 4, characterized in that: The motor power group (36) comprises a motor (361), a rotating shaft (362) and a support seat (364); the motor (361) is fixed on the blade structure support frame (12); the rotating shaft (362) is fixed on the output shaft of the motor (361); and the support seat (364) is fixed on the blade structure support frame (12) for supporting the rotating shaft (362).

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