Plastic crushing and screening machine

Abstract

The utility model discloses a plastic crushing and screening machine which comprises a machine frame, a crushing assembly, a screening assembly and a driving assembly, the crushing assembly, the screening assembly and the driving assembly are arranged on the machine frame, and the crushing assembly comprises a crushing machine body, a first crushing cutter set, a second crushing cutter set, a plurality of fixed cutters and a feeding hopper; the screening assembly comprises a first screening assembly and a second screening assembly. According to the plastic crushing device, the first crushing cutter set and the second crushing cutter set which are independent of each other interact with each other and are matched with the fixed cutter, large plastic is conveniently crushed into small plastic sheets, the crushing effect is good, the crushing rotating cutter is independently arranged, and if a blade is damaged, only a single damaged blade needs to be replaced; through the arrangement of the first screening assembly and the second screening assembly, the double screening effect can be achieved, and the plastic screening efficiency is improved; the whole device is high in automation degree, later manual screening of workers is not needed, and the input amount of labor force is reduced.

Description

Technical Field

[0001] This utility model relates to the field of plastic recycling, and in particular to a plastic crushing and screening machine. Background Technology

[0002] To achieve resource recycling and alleviate environmental pressure, waste plastic products are usually recycled and reprocessed into recycled plastics. When recycling waste plastics, the plastics need to be crushed, melted, molded, and dried. Then, plastic granules are obtained through injection molding, realizing the reuse process of waste plastics. Before molding and melting the plastics, plastic crushing equipment is needed to crush and screen the recycled plastics.

[0003] Traditional crushers are mostly box-type structures. By setting a large number of crushing rollers inside the box structure, the rotation between the crushing rollers can crush the plastic that passes through. However, existing crushers have the following drawbacks: after crushing the plastic, the existing crushers need to be carried by workers to another equipment for screening, or manual screening is required, which is very inconvenient and labor-intensive. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a plastic crushing and screening machine.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a plastic crushing and screening machine, including a frame, and a crushing component, a screening component, and a driving component mounted on the frame. The crushing component includes a crusher body, a first and a second set of crushing blades rotatably arranged and cross-placed inside the crusher body, a plurality of fixed blades fixed to the inner side wall of the crusher body, and a feed hopper mounted above the crusher body. The screening component includes a first screening component mounted at the bottom of the crusher body and a second screening component fixed in the middle of the frame. The driving component includes a reducer fixed on the frame and a first motor connected to the reducer. The output end of the reducer is rotatably connected to the first set of crushing blades. A material collection box is also connected to the bottom of the frame.

[0007] As a preferred technical solution of this utility model, the first crushing blade group and the second crushing blade group are arranged in parallel. The first crushing blade group includes a first rotating shaft, a plurality of first rotating blades and a first gear. The first rotating blades are sleeved on the first rotating shaft and arranged evenly and equidistantly along the first rotating shaft. The first rotating blades are housed inside the crusher body. The first gear is sleeved on the first rotating shaft and is arranged on the outside of the crusher body. The first rotating shaft is fixedly connected to the output end of the reducer.

[0008] As a preferred embodiment of the present invention, the second crushing blade assembly includes a second rotating shaft, a plurality of second rotating blades and a second gear. The second rotating blades are sleeved on the second rotating shaft and evenly arranged along the second rotating shaft. The second rotating blades are housed inside the crusher body. The second gears are sleeved on the second rotating shaft and disposed outside the crusher body. The first rotating blades and the second rotating blades are staggered along the axial direction of the first rotating shaft. The first gear meshes with the second gear.

[0009] As a preferred embodiment of this utility model, a plurality of fixed blades are evenly distributed on two opposite side walls of the crusher body. The fixed blades on one side wall are alternately arranged with the first rotating blade along the axial direction of the first rotating shaft, and the fixed blades on the other side wall are alternately arranged with the second rotating blade along the axial direction of the second rotating shaft.

[0010] As a preferred technical solution of this utility model, the first screening component includes a first screen plate disposed at the bottom of the crusher body and a first screen mesh installed in the middle of the first screen plate. A fixed handle is provided on the side of the first screen plate, and the first screen plate is movably connected to the crusher body.

[0011] As a preferred technical solution of this utility model, the second screening component includes a second screen plate fixed in the middle of the frame, a spiral main shaft rotatably connected to the two side walls of the second screen plate, and a second motor fixed to one side of the second screen plate. The spiral main shaft is welded with a plurality of equally spaced spiral blades, and the bottom side of the second screen plate is provided with a plurality of uniformly distributed screen holes.

[0012] As a preferred technical solution of this utility model, the material collection box is fixed to the bottom of the frame. The material collection box includes a sedimentation tank located below the sieve holes and a plastic recycling box adjacent to the sedimentation tank. The side wall of the sedimentation tank is also connected to an inlet valve and an outlet valve.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. Through the interaction of the independent first and second crushing blade groups, and in conjunction with the fixed blade, larger plastics can be easily crushed into several small plastic pieces with good crushing effect. Moreover, the crushing rotary blades are set independently. If a blade is damaged, only the damaged blade needs to be replaced, without replacing the entire blade group. This is simple, quick, and cost-effective.

[0015] 2. The first and second screening components can achieve a dual screening effect, which improves the screening efficiency of plastics and enables the effective separation of impurities.

[0016] 3. The entire device is highly automated, eliminating the need for manual screening by staff and reducing labor input. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is the front view of this utility model;

[0020] Figure 3 This is a top view of the present invention;

[0021] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the crushing component in this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the first shredder assembly in this utility model;

[0024] In the diagram: 1. Frame; 2. Crushing assembly; 3. Screening assembly; 4. Drive assembly; 5. First crushing blade assembly; 6. Second crushing blade assembly; 7. First screening assembly; 8. Second screening assembly; 9. Material collection box; 21. Crusher body; 22. Fixed blade; 23. Feed hopper; 41. First motor; 42. Reducer; 51. First rotating shaft; 52. First rotating blade; 53. First gear; 54. Second rotating shaft; 55. Second rotating blade; 56. Second gear; 71. First screen plate; 72. First screen mesh; 73. Fixed handle; 74. Second screen plate; 75. Spiral spindle; 76. Second motor; 77. Spiral blades; 78. Screen holes; 91. Sedimentation tank; 92. Plastic recycling bin; 93. Inlet valve; 94. Outlet valve. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] In the attached diagram, all identical reference numerals refer to the same components.

[0027] like Figure 1-6 As shown, this utility model provides a plastic crushing and screening machine, including a frame 1, and a crushing component 2, a screening component 3 and a driving component 4 disposed on the frame 1.

[0028] The crushing assembly 2 includes a crusher body 21, a first crushing blade group 5 and a second crushing blade group 6 that are rotatably arranged inside the crusher body 21 and placed crosswise, a number of fixed blades 22 fixed on the inner side wall of the crusher body 21, and a feed hopper 23 arranged above the crusher body 21.

[0029] The screening assembly 3 includes a first screening assembly 7 installed at the bottom of the crusher body 21 and a second screening assembly 8 fixed in the middle of the frame 1. The drive assembly 4 includes a reducer 42 fixed on the frame 1 and a first motor 41 connected to the reducer 42. The output end of the reducer 42 is rotatably connected to the first crushing blade assembly 5. A material collection box 9 is also connected to the bottom of the frame 1.

[0030] In this embodiment, the feed hopper 23 is welded to the top of the crusher body 21 and communicates with its top. The input end of the reducer 42 is connected to the output end of the first motor 41 through a coupling. The output end of the reducer 42 is coaxially connected to the first rotating shaft 51 on the first crushing blade group 5, and is used to drive the first rotating shaft 51 to rotate.

[0031] The method of using this utility model is as follows:

[0032] 1. Recycled plastic is fed into the crushing and screening machine from the feed hopper 23. After being fully crushed by the crushing component 2, it falls onto the first screening component 7 below. Uncrushed metal impurities fall onto the first screen 72. After a period of accumulation, the first screen 72 can be pulled out through the fixed handle 73 to clean the impurities.

[0033] 2. After the first screening, the material automatically falls onto the second screening component 8. Under the pushing action of the spiral blades 77, it spirals forward inside the second screen plate 74. Dust and other impurities in the material fall into the sedimentation tank 91. Recyclable plastic is pushed into the end of the second screen plate 74 by the spiral blades 77 and falls into the plastic recycling bin 92 from the lower outlet, thus completing the crushing and screening of plastic.

[0034] For further details, please refer to Figure 5-6 The first crushing blade group 5 and the second crushing blade group 6 are arranged in parallel. The first crushing blade group 5 includes a first rotating shaft 51, several first rotating blades 52 and a first gear 53. The first rotating blades 52 are sleeved on the first rotating shaft 51 and are evenly and equidistantly arranged along the first rotating shaft 51. The first rotating blades 52 are housed inside the crusher body 21. The first gear 53 is sleeved on the first rotating shaft 51 and is located on the outside of the crusher body 21. The first rotating shaft 51 is fixedly connected to the output end of the reducer 42.

[0035] In this embodiment, the cutting edge of the first rotating blade 52 protrudes along the outer circle of the rotating blade and includes multiple arrayed blades. The first rotating blade 52 is fixed to the first rotating shaft 51 by bolts. The two ends of the first rotating shaft 51 are fixed to the side wall of the crusher body 21 by bearings. If a certain first rotating blade 52 is damaged, only the damaged blade needs to be replaced, without replacing the entire blade assembly. This is simple, quick, and cost-effective.

[0036] For further details, please refer to Figure 5 The second crushing blade assembly 6 includes a second rotating shaft 54, several second rotating blades 55, and a second gear 56. The second rotating blades 55 are sleeved on the second rotating shaft 54 ​​and evenly arranged along the second rotating shaft 54. The second rotating blades 55 are housed inside the crusher body 21. The second gear 56 is sleeved on the second rotating shaft 54 ​​and is located outside the crusher body 21. The first rotating blade 52 and the second rotating blade 55 are staggered along the axial direction of the first rotating shaft 51. The first gear 53 meshes with the second gear 56.

[0037] In this embodiment, the second rotating cutter 55 is fixed to the second rotating shaft 54 ​​by bolts. If a second rotating cutter 55 is damaged, only the damaged cutter needs to be replaced, without replacing the entire cutter set. This is simple, quick, and cost-effective.

[0038] For further details, please refer to Figure 5 Several fixed blades 22 are evenly distributed on two opposite side walls inside the crusher body 21. The fixed blades 22 on one side wall are alternately arranged with the first rotating blade 52 along the axial direction of the first rotating shaft 51, and the fixed blades 22 on the other side wall are alternately arranged with the second rotating blade 55 along the axial direction of the second rotating shaft 54.

[0039] In this embodiment, the fixed blade 22 is fixed to the side wall of the crusher body 21 by bolts. The fixed blade 22 is triangular in shape. During the rotation of the first rotating blade 52 and the second rotating blade 55, the edges of the fixed blade 22 play a cutting and blocking role against the plastic.

[0040] For further details, please refer to Figure 4The first screening component 7 includes a first screen plate 71 disposed at the bottom of the crusher body 21 and a first screen 72 installed in the middle of the first screen plate 71. A fixed handle 73 is provided on the side of the first screen plate 71, and the first screen plate 71 is movably connected to the crusher body 21.

[0041] In this embodiment, the first screen plate 71 is rectangular and slidably connected to the side of the crusher body 21, allowing it to be pulled out of the crusher body 21. The first screen 72 has evenly distributed circular screen holes on its upper surface. The crushed recycled plastic particles automatically fall through these circular screen holes into the second screening component 8 below. Unbreakable hard metals in the recycled plastic remain on the first screen 72. After a certain period of accumulation, the first screen plate 71 can be pulled out, and the impurities on the screen can be cleaned uniformly.

[0042] Furthermore, the second screening assembly 8 includes a second screen plate 74 fixed in the middle of the frame 1, a spiral spindle 75 rotatably connected to the two side walls of the second screen plate 74, and a second motor 76 fixed on one side of the second screen plate 74. The spiral spindle 75 is welded with a number of equally spaced spiral blades 77, and the bottom side of the second screen plate 74 is provided with a number of evenly distributed screen holes 78.

[0043] In this embodiment, the spiral spindle 75 is coaxially arranged with the output end of the second motor 76. The spiral blades 77 rotate under the drive of the spiral spindle 75. The second sieve plate 74 is cylindrical, and the sieve holes 78 are located in the lower semi-circular area. After the plastic particles fall into the second sieve plate 74, they are pushed by the spiral blades 77 and spirally rotate inside the second sieve plate 74. Small particles and impurities such as dust fall into the sedimentation tank 91 below through the sieve holes 78. The recycled plastic is finally pushed to one end of the second sieve plate 74 and automatically falls into the plastic recycling bin 92 from the outlet below the second sieve plate 74.

[0044] For further details, please refer to Figure 1-2 The material collection box 9 is fixed to the bottom of the frame 1. The material collection box 9 includes a sedimentation tank 91 located below the screen hole 78 and a plastic recycling box 92 adjacent to the sedimentation tank. The side wall of the sedimentation tank 91 is also connected to an inlet valve 93 and an outlet valve 94.

[0045] This invention relates to a plastic crushing and screening machine. Through the interaction of independent first and second crushing blade groups, along with a fixed blade, it effectively crushes larger plastics into numerous smaller pieces, achieving excellent crushing results. Furthermore, the integrated first and second screening components enable dual screening, enhancing both screening efficiency and impurity filtration. The entire device is highly automated, eliminating the need for manual screening and reducing labor input.

[0046] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A plastic crushing and screening machine, comprising a frame (1), and a crushing assembly (2), a screening assembly (3), and a drive assembly (4) disposed on the frame (1), characterized in that, The crushing assembly (2) includes a crusher body (21), a first crushing blade group (5) and a second crushing blade group (6) rotatably arranged crosswise inside the crusher body (21), a plurality of fixed blades (22) fixed on the inner side wall of the crusher body (21), and a feed hopper (23) arranged above the crusher body (21); the screening assembly (3) includes a first screening assembly (7) installed at the bottom of the crusher body (21) and a second screening assembly (8) fixed in the middle of the frame (1); the driving assembly (4) includes a reducer (42) fixed on the frame (1) and a drive assembly (43) connected to the reducer (42). 42) The first motor (41) is connected, and the output end of the reducer (42) is rotatably connected to the first crushing blade group (5). The bottom of the frame (1) is also connected to a material collection box (9). The second screening component (8) includes a second screen plate (74) fixed in the middle of the frame (1), a spiral spindle (75) rotatably connected to the two side walls of the second screen plate (74), and a second motor (76) fixed on one side of the second screen plate (74). Several spiral blades (77) are welded on the spiral spindle (75), and several uniformly distributed screen holes (78) are opened on one side of the bottom of the second screen plate (74).

2. The plastic crushing and screening machine according to claim 1, characterized in that, The first crushing blade group (5) and the second crushing blade group (6) are arranged in parallel. The first crushing blade group (5) includes a first rotating shaft (51), a plurality of first rotating blades (52) and a first gear (53). The first rotating blades (52) are sleeved on the first rotating shaft (51) and are evenly and equidistantly arranged along the first rotating shaft (51). The first rotating blades (52) are housed inside the crusher body (21). The first gear (53) is sleeved on the first rotating shaft (51) and is located on the outside of the crusher body (21). The first rotating shaft (51) is fixedly connected to the output end of the reducer (42).

3. A plastic crushing and screening machine according to claim 2, characterized in that, The second crushing blade assembly (6) includes a second rotating shaft (54), a plurality of second rotating blades (55) and a second gear (56). The second rotating blades (55) are sleeved on the second rotating shaft (54) and evenly arranged along the second rotating shaft (54). The second rotating blades (55) are housed inside the crusher body (21). The second gear (56) is sleeved on the second rotating shaft (54) and disposed outside the crusher body (21). The first rotating blade (52) and the second rotating blades (55) are staggered along the axial direction of the first rotating shaft (51). The first gear (53) meshes with the second gear (56).

4. A plastic crushing and screening machine according to claim 3, characterized in that, A number of fixed blades (22) are evenly distributed on two opposite side walls inside the crusher body (21). The fixed blades (22) on one side wall are alternately arranged with the first rotating blade (52) along the axial direction of the first rotating shaft (51), and the fixed blades (22) on the other side wall are alternately arranged with the second rotating blade (55) along the axial direction of the second rotating shaft (54).

5. A plastic crushing and screening machine according to claim 1, characterized in that, The first screening component (7) includes a first screen plate (71) disposed at the bottom of the crusher body (21) and a first screen mesh (72) installed in the middle of the first screen plate (71). A fixed handle (73) is provided on the side of the first screen plate (71), and the first screen plate (71) is movably connected to the crusher body (21).

6. A plastic crushing and screening machine according to claim 1, characterized in that, The material collection box (9) is fixed to the bottom of the frame (1). The material collection box (9) includes a sedimentation tank (91) located below the sieve hole (78) and a plastic recycling box (92) adjacent to the sedimentation tank. The sedimentation tank (91) is also connected to an inlet valve (93) and an outlet valve (94).

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