A waste crushing device for plastic product production
By designing the crushing and pre-treatment components, the problem of uneven crushing in existing equipment has been solved, achieving uniform crushing and efficient collection of plastic waste, and improving the crushing effect and the uniformity of recycled materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI YISHENGYUAN TECHNOLOGY CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-06-09
AI Technical Summary
The fixed installation of the crushing blades in existing waste crushing devices for plastic product manufacturing results in a lack of targeted design for the blade angle and arrangement. This leads to uneven shearing and impact forces on the waste in the crushing chamber, making it difficult to meet the crushing requirements of plastics with different hardness and toughness. Furthermore, it easily results in large pieces of residue or entanglement, affecting the uniformity of particle size.
The design employs a crushing assembly, including a pair of crushing rollers and a crushing blade holder. The crushing rollers rotate in opposite directions to generate shearing force for initial crushing, while the crushing blade holder performs secondary refinement. Combined with feed pretreatment components such as an extrusion frame and a fan dust removal system, this ensures uniform crushing and efficient collection of waste materials.
It achieves uniform crushing of plastic waste with different hardness and toughness, avoids large pieces of residue and entanglement, improves the crushing effect, meets the material uniformity requirements of recycling, and reduces energy consumption and the need for secondary crushing.
Smart Images
Figure CN224334781U_ABST
Abstract
Description
Technical Field
[0001] The embodiments disclosed herein relate to the field of plastic processing technology, and more specifically, to a waste pulverizing device for the production of plastic products. Background Technology
[0002] The production of plastic products generates a large amount of waste, including scraps and defective products. This waste can be recycled and reused through crushing, which is significant for reducing production costs and minimizing resource waste. However, currently used waste crushing equipment has obvious technical shortcomings.
[0003] Regarding the crushing effect, the existing crushing blades are mostly fixed and single-structured, lacking targeted design in terms of blade angle and arrangement. This results in uneven shearing and impact forces on the waste material within the crushing chamber. For high-hardness plastic waste (such as polyoxymethylene and polycarbonate products), incomplete crushing is likely to occur, with some waste material remaining in large lumps. For high-toughness plastics (such as polyethylene and polypropylene products), the waste material tends to entangle on the blades, forming a "clumping" phenomenon, which affects the crushing effect. This results in significant differences in the size of the crushed waste particles, with the ratio of the largest to the smallest particle size often exceeding 5:1, failing to meet the uniformity requirements of subsequent recycling processing.
[0004] The problems of poor crushing effect and inconsistent particle size not only increase the difficulty of subsequent melting and granulation processes, leading to a decrease in the performance stability of recycled plastics, but also increase energy consumption and labor time due to the need for secondary crushing of some large pieces of waste, severely restricting the circular economy efficiency of plastic product manufacturing. Therefore, developing a crushing device that can significantly improve the crushing effect and ensure the uniformity of waste particles has become an urgent problem to be solved by the industry. Utility Model Content
[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a waste crushing device for plastic product manufacturing, which solves the technical problem that the crushing blades of existing devices are mostly fixed and have a single structure, and the blade angle and arrangement lack targeted design, resulting in uneven shearing and impact forces on the waste in the crushing chamber.
[0006] According to one aspect, at least one embodiment of this disclosure provides a waste crushing apparatus for plastic product manufacturing, comprising:
[0007] A base plate and a housing, wherein the housing is fixed to the base plate;
[0008] A feed pretreatment assembly, wherein the feed pretreatment assembly is disposed in the housing;
[0009] A pair of conveying rollers and a crushing assembly, wherein the conveying rollers are rotatably connected to the top and bottom of the housing, one of the conveying rollers is driven to rotate by a motor, and the crushing assembly is disposed inside the housing;
[0010] The crushing assembly includes a pair of crushing rollers, both of which are rotatably connected inside the housing. Each crushing roller has a transmission gear at one end. One of the crushing rollers is driven to rotate by electricity. A discharge port is provided on one side of the housing.
[0011] As a further technical solution, a shield is provided on one side of the outer shell, and a pulverizing blade holder that is driven by electricity is provided inside the shield. The pulverizing blade holder covers the outside of the discharge port, and the bottom of the shield has an open structure.
[0012] As a further technical solution, the feeding pretreatment assembly includes an extrusion frame, which is movably mounted on the top of the housing. The extrusion frame is connected to the housing via a linear drive, and a number of stabilizing rods are provided on the surface of the extrusion frame.
[0013] As a further technical solution, the upper end of the stabilizing rod is movably fitted inside the top of the housing, and a pair of fans are installed on one side surface of the housing, with the fans located on the side of the feed opening at the top of the housing.
[0014] As a further technical solution, a dust collection hood is provided on one side of the outer shell, and a plurality of dust collection holes are opened on the inner surface of the outer shell. The dust collection holes are connected to the interior of the dust collection hood, and baffles are provided on both inner surfaces of the outer shell.
[0015] As a further technical solution, the bottom of the outer shell has an inclined transition structure.
[0016] As a further technical solution, the extrusion frame has an overall L-shaped structure, and the right-angle transition surface of the extrusion frame is located on the feeding direction side of the outer shell.
[0017] As a further technical solution, the baffle plate is bent downwards and transitions, and the baffle plate covers the dust collection hole and the fan respectively.
[0018] The beneficial effects of the embodiments disclosed herein are as follows:
[0019] In this disclosure, the crushing assembly solves the problem of uneven crushing in traditional devices through a two-stage crushing structure of crushing rollers and crushing blades. A pair of crushing rollers rotate in opposite directions to generate shearing force, initially crushing the pre-treated waste material, while the transmission gears ensure synchronized rotation speeds. The crushing blades inside the shield further refine the initially crushed waste material, resulting in more uniform particle size. This two-stage crushing design can adapt to plastic waste with different hardness and toughness, avoids large pieces remaining or entanglement, improves crushing efficiency, meets the requirements for material uniformity in subsequent recycling processes, and reduces energy consumption for secondary crushing. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.
[0021] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;
[0022] Figure 2 This is an isometric drawing of the present disclosure;
[0023] Figure 3 This is an isometric sectional view of the present disclosure;
[0024] Figure 4 Appendix to this disclosure Figure 3 Enlarged view of part A in the middle;
[0025] In the diagram: 1. Base plate; 2. Outer shell; 3. Conveying roller; 4. Crushing assembly; 4-1. Crushing roller; 4-2. Transmission gear; 4-3. Discharge port; 4-4. Shielding cover; 4-5. Crushing blade holder; 5. Feed pretreatment assembly; 5-1. Extrusion frame; 5-2. Stabilizing rod; 5-3. Fan; 5-4. Dust collection hood; 5-5. Dust collection hole; 5-6. Shielding plate. Detailed Implementation
[0026] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.
[0027] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0028] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0029] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0030] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0031] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0032] like Figures 1-4 As shown, it illustrates a waste shredding apparatus for plastic product manufacturing according to an embodiment of the present disclosure, comprising:
[0033] The base plate 1 and the outer shell 2 are fixed to the base plate 1;
[0034] Feed pretreatment component 5, wherein the feed pretreatment component 5 is disposed in the housing 2;
[0035] A pair of conveying rollers 3 and a crushing assembly 4, wherein the conveying rollers 3 are rotatably connected to the top and bottom of the housing 2, one of the conveying rollers 3 is driven to rotate by a motor, and the crushing assembly 4 is disposed inside the housing 2;
[0036] The crushing assembly 4 includes a pair of crushing rollers 4-1, both of which are rotatably connected inside the housing 2. Each crushing roller 4-1 has a transmission gear 4-2 at one end. One of the crushing rollers 4-1 is driven to rotate by electricity. A discharge port 4-3 is provided on one side of the housing 2, and a shield 4-4 is provided on one side of the housing 2. A crushing blade holder 4-5 driven to rotate by electricity is provided inside the shield 4-4. The crushing blade holder 4-5 covers the discharge port 4-3. The bottom of the shield 4-4 is an open structure.
[0037] In some examples, to achieve uniform crushing of waste, a crushing assembly 4 is designed. This assembly includes a pair of crushing rollers 4-1 inside the housing 2, rotatably connected by bearings. A drive gear 4-2 at one end meshes with each other. When one crushing roller 4-1 is electrically driven to rotate, the drive gear 4-2 drives the other crushing roller 4-1 to rotate in the opposite direction, forming a roller crushing structure. This structure can initially crush the pre-treated waste. The discharge port 4-3 on one side of the housing 2 is opposite to the bottom of the crushing rollers 4-1 and is used to discharge the initially crushed waste. A shield 4-4 is bolted to the side of the housing 2, covering the discharge port 4-3. The crushing blade holder 4-5 inside is electrically driven to rotate at high speed. The blades on the blade holder are radially distributed, allowing for secondary crushing of the waste discharged from the discharge port 4-3. The opening at the bottom of the shield 4-4 facilitates the discharge and collection of the crushed waste.
[0038] During operation, the initially crushed waste material enters the baffle 4-4 through the discharge port 4-3, where it is further shredded by the high-speed rotating crushing blades 4-5, achieving multi-stage crushing. The counter-rotating crushing rollers 4-1 ensure uniform force on the waste material, and the secondary crushing by the crushing blades 4-5 makes the waste particles finer and more uniform. The baffle 4-4 not only prevents waste material from splashing but also concentrates the waste material for secondary processing, improving the crushing effect and meeting the particle size requirements for recycling and reusing plastic waste.
[0039] like Figures 1-4As shown in the figure, the feeding pretreatment component 5 proposed in this embodiment includes an extrusion frame 5-1, which is movably fitted inside the top of the outer shell 2. The extrusion frame 5-1 is connected to the outer shell 2 by a linear drive. Several stabilizing rods 5-2 are provided on the surface of the extrusion frame 5-1. The upper ends of the stabilizing rods 5-2 are movably fitted inside the top of the outer shell 2. A pair of fans 5-3 are installed on one side of the outer shell 2. The fans 5-3 are located on one side of the top feeding opening of the outer shell 2. A dust collection hood 5-4 is provided on one side of the outer shell 2. Several dust collection holes 5-5 are opened on the inner surface of the outer shell 2. The dust collection holes 5-5 are connected to the inside of the dust collection hood 5-4. Baffles 5-6 are provided on both inner surfaces of the outer shell 2.
[0040] In some examples, in order to achieve the effect of improving crushing efficiency through extrusion molding, a feeding pretreatment component 5 is designed. This component includes an extrusion frame 5-1 set at the top inside the housing 2, with its two sides sliding against the inner wall of the housing 2. The output end of the linear drive device is connected to its top, which can drive the extrusion frame 5-1 to move up and down to extrude the input waste material, compressing the loose waste material and facilitating subsequent crushing.
[0041] The stabilizing rod 5-2 on the surface of the extrusion frame 5-1 is vertically upward, and its upper end is movably fitted into the guide hole at the top of the outer casing 2, ensuring that the extrusion frame 5-1 is stable and does not tilt when raised or lowered. The fan 5-3 on one side of the outer casing 2 is aligned with the top feed opening, which can blow the dust generated during feeding inward. The dust collection hole 5-5 on the inner side of the outer casing 2 is connected to the dust collection hood 5-4 on the side, and the dust enters the dust collection hood 5-4 through the dust collection hole 5-5 and is collected. The baffles 5-6 on both sides inside the outer casing 2 are inclined, which can guide the waste material to gather below the extrusion frame 5-1 and prevent the waste material from getting stuck in the corner.
[0042] During pretreatment, a linear drive lowers the extrusion frame 5-1 to extrude the waste material. A fan 5-3, in conjunction with a dust collection hood 5-4, removes dust, while a baffle plate 5-6 guides the waste material to concentrate. The increased density of the extruded waste allows for better contact with the crushing rollers 4-1 when it enters the crushing assembly 4, improving crushing uniformity. The dust removal function also improves the working environment and prevents dust pollution. The coordinated operation of these components achieves efficient pretreatment of the waste material, providing favorable conditions for subsequent crushing.
[0043] For example, such as Figure 3 As shown, the bottom of the outer shell 2 has an inclined transition structure.
[0044] In some examples, the inclined transition structure at the bottom of the outer casing 2 slopes towards the discharge port 4-3. This design allows the crushed waste to slide along the inclined surface towards the discharge port 4-3 under the influence of gravity, preventing it from accumulating at the bottom. The inclined surface corresponds to the bottom opening of the shield 4-4, allowing the waste to smoothly enter the subsequent collection stage, reducing the trouble of manual cleaning, improving the overall discharge efficiency, and ensuring that the crushed waste is discharged in a timely manner.
[0045] For example, such as Figure 3 As shown, the extrusion frame 5-1 has an overall L-shaped structure, and the right-angle transition surface of the extrusion frame 5-1 is located on the feeding direction side of the outer shell 2.
[0046] In some examples, an L-shaped extrusion frame 5-1 is used, with its horizontal portion parallel to the top of the outer casing 2 and its vertical portion facing the feeding direction. The right-angled transition surface fits the edge of the feed inlet. When the extrusion frame 5-1 descends, the vertical portion pushes the waste material near the feed inlet downwards, preventing it from getting stuck. The L-shaped structure increases the extrusion area, resulting in more even force distribution on the waste material, better compression, and easier processing by the subsequent crushing roller 4-1.
[0047] For example, such as Figure 3 As shown, the baffle plate 5-6 bends downwards to transition, and the baffle plate 5-6 covers the dust collection hole 5-5 and the fan 5-3 respectively.
[0048] In some examples, the downward-bent baffle 5-6 has a bending angle that matches the inner curvature of the outer casing 2. The baffle 5-6 covering the dust collection hole 5-5 can guide dust to flow into the dust collection hole 5-5, while preventing large pieces of waste from clogging the dust collection hole 5-5; the baffle 5-6 covering the fan 5-3 can prevent waste from being drawn into the fan 5-3, ensuring the normal operation of the fan 5-3, and can also blow air towards the surface of the waste, making it easier for the dust to be collected by the dust collection hood 5-4.
[0049] In actual use: Plastic waste is fed into the top inlet of the outer shell 2. The pre-treatment feeding assembly 5 is activated, and the linear drive lowers the L-shaped extrusion frame 5-1. The stabilizing rod 5-2 ensures its smooth movement. The extrusion frame 5-1 compresses the waste, and the baffle plate 5-6 guides the waste to gather towards the center. The fan 5-3 is activated to blow the dust generated during feeding inward. The dust enters the dust collection hood 5-4 through the dust collection hole 5-5 for collection. The compressed waste falls onto the conveying roller 3, which is driven by the motor to send it to the crushing assembly 4. A pair of crushing rollers 4-1 rotate in opposite directions under the drive of the transmission gear 4-2, performing preliminary crushing of the waste. The pre-crushed waste enters the baffle hood 4-4 through the discharge port 4-3, where it is further crushed by the internal rotating crushing blade holder 4-5, and finally discharged from the bottom opening of the baffle hood 4-4. The inclined structure at the bottom of the outer shell 2 assists in the flow of waste, completing the crushing process.
[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.
Claims
1. A waste material crushing device for plastic product manufacturing, characterized in that, include: A base plate (1) and a shell (2), wherein the shell (2) is fixed to the base plate (1); Feed pretreatment assembly (5), which is disposed in the housing (2); A pair of conveying rollers (3) and a crushing assembly (4), wherein the conveying rollers (3) are rotatably connected to the top and bottom of the housing (2), one of the conveying rollers (3) is driven to rotate by a motor, and the crushing assembly (4) is disposed inside the housing (2); The crushing assembly (4) includes a pair of crushing rollers (4-1), both of which are rotatably connected inside the outer shell (2). One end of each crushing roller (4-1) is provided with a transmission gear (4-2). One of the crushing rollers (4-1) is driven to rotate by electricity. A discharge port (4-3) is provided on one side of the outer shell (2).
2. The waste crushing device for plastic product manufacturing according to claim 1, characterized in that, A shield (4-4) is provided on one side of the outer shell (2). A pulverizing blade holder (4-5) driven by electricity is provided inside the shield (4-4). The pulverizing blade holder (4-5) covers the outside of the discharge port (4-3). The bottom of the shield (4-4) is an open structure.
3. The waste crushing device for plastic product manufacturing according to claim 1, characterized in that, The feeding pretreatment assembly (5) includes an extrusion frame (5-1), which is movably fitted inside the top of the housing (2). The extrusion frame (5-1) is connected to the housing (2) by a linear drive, and a plurality of stabilizing rods (5-2) are provided on the surface of the extrusion frame (5-1).
4. The waste crushing device for plastic product manufacturing according to claim 3, characterized in that, The upper end of the stabilizing rod (5-2) is movably fitted inside the top of the housing (2). A pair of fans (5-3) are installed on one side surface of the housing (2), and the fans (5-3) are located on the side of the feed opening at the top of the housing (2).
5. The waste crushing device for plastic product manufacturing according to claim 4, characterized in that, A dust collection hood (5-4) is provided on one side of the outer shell (2), and a plurality of dust collection holes (5-5) are opened on the inner surface of the outer shell (2). The dust collection holes (5-5) are connected to the inside of the dust collection hood (5-4), and baffles (5-6) are provided on both inner surfaces of the outer shell (2).
6. The waste crushing device for plastic product manufacturing according to claim 1, characterized in that, The bottom of the outer shell (2) has an inclined transition structure.
7. The waste crushing device for plastic product manufacturing according to claim 4, characterized in that, The extrusion frame (5-1) has an overall L-shaped structure, and the right-angle transition surface of the extrusion frame (5-1) is located on the feeding direction side of the outer shell (2).
8. The waste crushing device for plastic product manufacturing according to claim 5, characterized in that, The shield (5-6) bends downwards to transition, and the shield (5-6) covers the dust collection hole (5-5) and the fan (5-3) respectively.