Environment-friendly disposable tableware pulverizer
By designing a tapered feed inlet and a bidirectional shearing blade assembly with staggered angles, the problems of uneven particle size and fiber entanglement and clogging in the environmentally friendly tableware shredder are solved, achieving uniform particle size and continuous operation of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI OUBO PLASTIC PRODUCTS CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-05-19
AI Technical Summary
Existing environmentally friendly disposable tableware shredders suffer from uneven particle size and easy entanglement and clogging of fibrous materials, leading to uneven degradation and frequent equipment shutdowns during composting.
The device employs a tapered feed inlet design, bidirectional shearing with staggered angles of the main and auxiliary shaft cutter assemblies, and dynamic screening with a transverse arc-shaped filter plate. Combined with a self-cleaning function, it achieves uniform control of particle size and prevents fiber entanglement.
It achieves uniform particle size of crushed particles and continuous operation of the equipment, reducing the risk of degradation imbalance and the probability of equipment jamming during the composting process.
Smart Images
Figure CN224255828U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of environmentally friendly material processing technology, and in particular to an environmentally friendly disposable tableware shredder. Background Technology
[0002] Environmentally friendly disposable tableware refers to tableware that can be safely recycled and reused after use, reducing environmental pollution and resource waste, such as disposable catering utensils made of PLA polylactic acid, bamboo fiber, sugarcane bagasse, etc.
[0003] The main purpose of shredding environmentally friendly disposable tableware is to accelerate material decomposition and facilitate subsequent resource utilization. Physical crushing reduces volume and increases material surface area to improve biodegradation efficiency, while separating impurities to ensure compost purity. The shredded product can be directly used to produce recycled packaging materials or organic fertilizer raw materials, realizing a closed loop of "degradation-recycling". Especially for materials such as PLA that require specific degradation conditions, shredding can effectively alleviate the risk of pseudo-environmental protection caused by insufficient treatment facilities.
[0004] However, existing environmentally friendly disposable tableware shredders still have the following technical problems in practical applications:
[0005] 1) Uneven particle size after crushing: The large difference in particle size after crushing leads to the formation of local anaerobic environment by large particles due to their small surface area and slow degradation rate during composting, which inhibits microbial activity. Meanwhile, small particles decompose prematurely and lose nutrients, ultimately causing fluctuations in the pH value and imbalance in the carbon-nitrogen ratio of compost products, reducing fertilizer stability.
[0006] 2) Fibrous materials are prone to entanglement and clogging: Due to the high toughness of the long fiber structure of bamboo fiber and straw tableware, they are easily pulled and entangled by the rotating blades during the crushing process, leading to a sharp increase in frictional resistance, causing the equipment to overheat or jam, forcing frequent shutdowns for cleaning, resulting in decreased production capacity and increased abnormal wear rate of the blades. Therefore, we have proposed an environmentally friendly disposable tableware crusher to solve the problems mentioned above. Utility Model Content
[0007] This utility model proposes an environmentally friendly disposable tableware shredder. Through the pre-compression design of the gradually narrowing feed inlet 5, loose tableware is compacted. The main shaft and auxiliary shaft cutter assembly employ bidirectional shearing at an angle of 15° to 25° to achieve the purpose of dynamic peeling of fibrous entanglement by the hook-shaped blade arc surface. Combined with the 3mm-5mm dynamic screening and self-cleaning effect of the transverse arc filter plate, the shredder achieves uniform particle size control and continuous anti-clogging operation, thereby solving the problems mentioned in the background technology.
[0008] To achieve the above objectives, the present invention adopts the following technical solution: an environmentally friendly disposable tableware shredder, comprising a feeding conveyor belt assembly and a discharging conveyor belt assembly, wherein a support is installed at the end of the feeding conveyor belt assembly, a shredding mechanism is installed at the top of the support, a tapered feeding port is installed at the upper end of the shredding mechanism, and a discharging port is opened at the lower end of the shredding mechanism.
[0009] The crushing mechanism includes a protective cover fixedly installed on the upper end of the support. A blade assembly is installed inside the protective cover. Positioning plates located inside the protective cover are symmetrically installed on the left and right sides of the blade assembly. A filter plate is connected to the lower part of a set of positioning plates. The filter plate is integrally connected by a vertical fixing plate and a horizontal arc-shaped filter plate.
[0010] An arc-shaped groove is provided on the inner side of the upper end. The filter plate is integrally formed by a vertical fixing plate and a horizontal arc-shaped filter plate. The surface of the horizontal arc-shaped filter plate is uniformly opened with round holes with a diameter of 3mm-5mm.
[0011] Preferably, the staggered angle is 15° to 25°.
[0012] Preferably, when the main spindle obtuse angle hook-shaped blade rotates clockwise to the closest point to the central axis of the secondary spindle tool assembly, the tip of the main spindle obtuse angle hook-shaped blade forms a shearing gap of 0.5mm to 1.2mm with the surface of the secondary spindle, and the hook-shaped cutting edge of the main spindle obtuse angle hook-shaped blade geometrically scrapes the surface of the secondary spindle to peel off the wrapped fiber bundles; when the secondary spindle obtuse angle hook-shaped blade rotates counterclockwise to the closest point to the central axis of the main spindle tool assembly, the tip of the secondary spindle obtuse angle hook-shaped blade forms a shearing gap of 0.5mm to 1.2mm with the surface of the central axis of the main spindle tool assembly, and the hook-shaped cutting edge of the secondary spindle obtuse angle hook-shaped blade geometrically scrapes the surface of the main spindle to peel off the wrapped fiber bundles. The lower ends of the vertical fixing plate and the positioning plate of the filter plate are fixedly connected, and the transverse arc-shaped filter plate of the filter plate is located directly below the tool assembly. The cutting edge arc surfaces of the main spindle obtuse angle hook-shaped blade and the secondary spindle obtuse angle hook-shaped blade are in dynamic contact with the circumferential surface of the transverse arc-shaped filter plate.
[0013] Preferably, one end of the main spindle tool assembly is driven by a first gear meshing with a second gear at one end of the secondary spindle tool assembly, and a motor is fixedly installed on the outside of the protective cover, with the output shaft of the motor fixedly connected to the other end of the main spindle tool assembly.
[0014] Preferably, a fixing plate is fixedly installed on the outside of the protective cover, a motor is installed on the upper end of the fixing plate, the output shaft of the motor is fixedly connected to the first gear, an opening is opened at the upper end of the protective cover, the opening is sealed to the lower port of the tapered feed port, and the starting end is located directly below it.
[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0016] 1. Precise particle size control: Material is pre-compressed through a tapered feed inlet, and bidirectional staggered cutters reduce particle size from 0.5mm to...
[0017] The 1.2mm dynamic shear gap and the forced screening by the transverse arc-shaped filter plate keep the particle size of the crushed particles stable below 3mm, reduce the standard deviation of particle size, and effectively solve the problem of degradation imbalance caused by particle size differences during composting.
[0018] 2. High-efficiency anti-entanglement operation: The hook-shaped cutting edges of the main shaft and auxiliary shaft cutters scrape and peel off the fiber bundles in both directions. Combined with the dynamic self-cleaning effect of the filter plate, the failure rate of bamboo fiber tableware entanglement is reduced, and the equipment can run continuously without jamming, thereby increasing production capacity. Attached Figure Description
[0019] Figure 1 This utility model provides a perspective view of the main structure of an environmentally friendly disposable tableware shredder;
[0020] Figure 2 This utility model provides a front-view perspective view of the pulverizing mechanism in an environmentally friendly disposable tableware pulverizer;
[0021] Figure 3 This utility model provides a rear-view perspective view of the pulverizing mechanism in an environmentally friendly disposable tableware pulverizer;
[0022] Figure 4 This utility model provides a three-dimensional view of the internal structure of the pulverizing mechanism in an environmentally friendly disposable tableware pulverizer;
[0023] Figure 5 This utility model presents a three-dimensional structural diagram of the power component in an environmentally friendly disposable tableware shredder.
[0024] Legend: 1. Feed conveyor belt assembly; 2. Discharge conveyor belt assembly; 3. Support frame; 4. Crushing mechanism; 41. Protective cover; 42. Cutting tool assembly; 421. Main shaft cutting tool assembly; 422. Main shaft cutter head; 423. Main shaft obtuse angle hook-shaped blade; 424. Secondary shaft cutting tool assembly; 425. Secondary shaft cutter head; 426. Secondary shaft obtuse angle hook-shaped blade; 43. Positioning plate; 44. Filter plate; 45. Fixing plate; 46. Motor; 47. First gear; 48. Second gear; 49. Opening; 5. Gradually narrowing feed inlet; 6. Discharge outlet. Detailed Implementation
[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can also be implemented in other ways than those described herein, and therefore the present invention is not limited to the specific embodiments disclosed in the following specification.
[0027] Example 1, as Figures 1-4 As shown, this utility model provides an environmentally friendly disposable tableware shredder: including a feeding conveyor belt assembly 1 and a discharging conveyor belt assembly 2. A support 3 is installed at the end of the feeding conveyor belt assembly 1, a shredding mechanism 4 is installed at the top of the support 3, a tapered feeding port 5 is installed at the upper end of the shredding mechanism 4, and a discharging port 6 is opened at the lower end of the shredding mechanism 4.
[0028] The crushing mechanism 4 includes a protective cover 41 fixedly installed on the upper end of the bracket 3. A blade assembly 42 is installed inside the protective cover 41. Positioning plates 43 located inside the protective cover 41 are symmetrically installed on the left and right sides of the blade assembly 42. A filter plate 44 is connected to the lower part of a set of positioning plates 43. The filter plate 44 is integrally connected by a vertical fixing plate and a horizontal arc-shaped filter plate.
[0029] The upper inner side of 43 is provided with an arc-shaped groove. The filter plate 44 is integrally formed by a vertical fixing plate and a horizontal arc-shaped filter plate. The surface of the horizontal arc-shaped filter plate is uniformly provided with round holes with a diameter of 3mm to 5mm.
[0030] The overall effect achieved by Embodiment 1 is as follows: by pre-compressing the material through the tapered feed inlet 5, combined with the bidirectional shearing of the main shaft cutter disc 422 and the secondary shaft cutter disc 425 at an alternating angle of 15° to 25°, and the dynamic screening of the transverse arc-shaped filter plate 44 at 3mm to 5mm, efficient anti-tangling crushing of tableware such as bamboo fiber and PLA is achieved, so that the particle size of the fragments is uniformly controlled below 3mm, which can be directly used for composting or the preparation of recycled materials.
[0031] Example 2, as Figures 4-5As shown, this utility model provides an environmentally friendly disposable tableware shredder: the blade assembly 42 includes a main shaft blade assembly 421 and a secondary shaft blade assembly 424. Both ends of the main shaft blade assembly 421 and the secondary shaft blade assembly 424 are rotatably connected to the front and rear walls of the protective cover 41. Multiple main shaft blade discs 422 are spaced apart on the main shaft blade assembly 421, and main shaft obtuse angle hook-shaped blades 423 are mounted on the main shaft blade discs 422 in a spiral arrangement. Multiple secondary shaft blade discs 425 are evenly spaced apart on the secondary shaft blade assembly 424, and secondary shaft obtuse angle hook-shaped blades 426 are mounted on the secondary shaft blade discs 425 in a spiral arrangement. The main shaft blade discs 422 and the secondary shaft blade discs 425 intersect... The blades are staggered, forming an alternating angle of 15° to 25°. When the main spindle obtuse angle hook-shaped blade 423 rotates clockwise to the closest point to the central axis of the secondary spindle tool assembly 424, the blade tip of the main spindle obtuse angle hook-shaped blade 423 forms a shearing gap of 0.5mm to 1.2mm with the surface of the secondary spindle. The hook-shaped cutting edge arc surface of the main spindle obtuse angle hook-shaped blade 423 geometrically scrapes the surface of the secondary spindle to peel off the wrapped fiber bundles. When the secondary spindle obtuse angle hook-shaped blade 426 rotates counterclockwise to the closest point to the central axis of the main spindle tool assembly 421, the blade tip of the secondary spindle obtuse angle hook-shaped blade 426 forms a shearing gap of 0.5mm to 1.2mm with the surface of the central axis of the main spindle tool assembly 421. The hook-shaped cutting edge arc surface of the secondary spindle obtuse angle hook-shaped blade 426 geometrically scrapes the surface of the main spindle to peel off the wrapped fiber bundles.
[0032] The overall effect achieved by Embodiment 2 is as follows: through the dynamic shearing gap of 0.5mm to 1.2mm between the main shaft cutter assembly 421 and the secondary shaft cutter assembly 424, the bidirectional scraping and peeling of the spirally distributed main shaft obtuse angle hook-shaped blade 423 and secondary shaft obtuse angle hook-shaped blade 426, and the bidirectional rotation at an alternating angle of 15° to 25°, continuous anti-entanglement pulverization of high-toughness tableware such as bamboo fiber is achieved, reducing the amount of fiber entanglement on the blade surface. At the same time, the stability of the shearing gap is maintained through the geometric scraping effect, ensuring the uniformity of the pulverized particle size and the continuous operation capability of the equipment.
[0033] Example 3, as Figure 2 , Figures 4-5As shown, this utility model provides an environmentally friendly disposable tableware shredder: the vertical fixing plate of the filter plate 44 and the lower end of the positioning plate 43 are fixedly connected. The horizontal arc-shaped filter plate of the filter plate 44 is located directly below the cutter assembly 42. The cutting edge arc surfaces of the main shaft obtuse angle hook-shaped blade 423 and the secondary shaft obtuse angle hook-shaped blade 426 are dynamically in contact with the circumferential surface of the horizontal arc-shaped filter plate of the filter plate 44. One end of the main shaft cutter assembly 421 is driven by the first gear 47 meshing with the second gear 48 at one end of the secondary shaft cutter assembly 424. A motor 46 is fixedly installed on the outside of the protective cover 41. The output shaft of the motor 46 is fixedly connected to the other end of the main shaft cutter assembly 421. A fixing plate 45 is fixedly installed on the outside of the protective cover 41. The upper end of the fixing plate 45 is equipped with the motor 46. The output shaft of the motor 46 is fixedly connected to the first gear 47. An opening 49 is opened at the upper end of the protective cover 41. The opening 49 is sealed to the lower port of the tapered feed port 5. The beginning of 2 is located directly below 6.
[0034] The overall effect achieved by embodiment 3 is as follows: through gear meshing transmission, the synchronous reverse rotation of the main shaft and the secondary shaft cutter is precisely controlled. Combined with the dynamic contact between the cutting edge arc surface and the circumferential surface of the transverse arc filter plate 44, and the sealing connection between the tapered feed port 5 and the protective cover 41, forced screening and continuous discharge of crushed materials are realized, which reduces the rebound rate of fiber residue. At the same time, the self-cleaning effect of the cutter and the filter plate reduces the screen hole clogging rate and ensures continuous operation of the equipment.
[0035] The working principle of the entire device is as follows:
[0036] Feeding and pre-compression stage: The feeding conveyor belt assembly 1 transports the tableware to the tapered feed inlet 5. Its gradually decreasing cross-section structure pre-compresses the loose material, making the tableware initially compact. This design prevents fibrous tableware from becoming entangled with the cutting tools due to its loose state at the inlet.
[0037] Bidirectional shearing and shredding stage: Motor 46 drives the main shaft cutter assembly 421 to rotate in the opposite direction through the gear set, while the main shaft cutter disc 422 rotates clockwise and the secondary shaft cutter disc 425 rotates counterclockwise, forming an alternating angle of 15° to 25°; the obtuse angle hook-shaped blade 423 of the main shaft and the surface of the secondary shaft cutter maintain a shearing gap of 0.5mm to 1.2mm, generating shearing force to shred hard PLA material during high-speed rotation. The obtuse angle hook-shaped blade 423 of the main shaft and the obtuse angle hook-shaped blade 426 of the secondary shaft dynamically scrape the surface of each other's cutters during rotation, peeling off the entangled fiber bundles and solving the problem of bamboo fiber entanglement;
[0038] Dynamic screening and circulating crushing stage: The crushed material falls onto the transverse arc-shaped filter plate 44, whose 3mm-5mm aperture screen holes allow qualified particles to pass through. Larger fragments that do not meet the standards are dynamically scraped by the arc surface of the rotating blades and forcibly brought back to the crushing zone for secondary crushing.
[0039] Discharge and collection stage: Qualified particles fall into the discharge conveyor belt assembly 2 through the discharge port 6. The arc-shaped filter plate structure, combined with the airflow field formed by the rotation of the blades, can accelerate the discharge of materials and prevent the screen holes from clogging. The whole process realizes continuous processing of "feeding-crushing-screening-discharge".
[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.
Claims
1. An environmentally friendly disposable tableware shredder, comprising a feeding conveyor belt assembly (1) and a discharging conveyor belt assembly (2), characterized in that: The feeding conveyor belt assembly (1) is provided with a bracket (3) at the end, a crushing mechanism (4) is installed on the top of the bracket (3), a tapered feed inlet (5) is installed at the upper end of the crushing mechanism (4), and a discharge outlet (6) is opened at the lower end of the crushing mechanism (4). The crushing mechanism (4) includes a protective cover (41) fixedly installed on the upper end of the bracket (3). A blade assembly (42) is installed inside the protective cover (41). Positioning plates (43) located inside the protective cover (41) are symmetrically installed on the left and right sides of the blade assembly (42). A filter plate (44) is connected to the lower part of a set of positioning plates (43). The filter plate (44) is integrally connected by a vertical fixing plate and a horizontal arc-shaped filter plate. The upper inner side of the (43) is provided with an arc-shaped groove, and the filter plate (44) is integrally formed by a vertical fixing plate and a horizontal arc-shaped filter plate. The surface of the horizontal arc-shaped filter plate is uniformly provided with round holes with a diameter of 3mm-5mm.
2. The environmentally friendly disposable tableware shredder according to claim 1, characterized in that: The tool assembly (42) includes a main spindle tool assembly (421) and a secondary spindle tool assembly (424). Both ends of the main spindle tool assembly (421) and the secondary spindle tool assembly (424) are rotatably connected to the front and rear walls of the protective cover (41). Multiple main spindle cutter discs (422) are installed at intervals on the main spindle tool assembly (421). A main spindle obtuse angle hook-shaped cutter (423) is installed on the main spindle cutter disc (422). The multiple main spindle obtuse angle hook-shaped cutters (423) are spirally distributed. Multiple secondary spindle cutter discs (425) are installed at even intervals on the secondary spindle tool assembly (424). A secondary spindle obtuse angle hook-shaped cutter (426) is installed on the secondary spindle cutter disc (425). The multiple secondary spindle obtuse angle hook-shaped cutters (426) are spirally distributed. The main spindle cutter discs (422) and the secondary spindle cutter discs (425) are staggered to form a staggered angle of 15° to 25°.
3. The environmentally friendly disposable tableware shredder according to claim 2, characterized in that: When the main spindle obtuse angle hook-shaped blade (423) rotates clockwise to the closest point to the central axis of the secondary spindle tool assembly (424), the blade tip of the main spindle obtuse angle hook-shaped blade (423) forms a shearing gap of 0.5mm to 1.2mm with the surface of the secondary spindle, and the hook-shaped cutting edge arc surface of the main spindle obtuse angle hook-shaped blade (423) geometrically scrapes the surface of the secondary spindle to peel off the wrapped fiber bundle; when the secondary spindle obtuse angle hook-shaped blade (426) rotates counterclockwise to the closest point to the central axis of the main spindle tool assembly (421), the blade tip of the secondary spindle obtuse angle hook-shaped blade (426) forms a shearing gap of 0.5mm to 1.2mm with the surface of the central axis of the main spindle tool assembly (421), and the hook-shaped cutting edge arc surface of the secondary spindle obtuse angle hook-shaped blade (426) geometrically scrapes the surface of the main spindle to peel off the wrapped fiber bundle.
4. The environmentally friendly disposable tableware shredder according to claim 2, characterized in that: The lower ends of the vertical fixing plate and the positioning plate (43) of the filter plate (44) are fixedly connected. The transverse arc-shaped filter plate of the filter plate (44) is located directly below the tool assembly (42). The cutting edge arc surfaces of the main shaft obtuse angle hook-shaped blade (423) and the secondary shaft obtuse angle hook-shaped blade (426) are in dynamic contact with the circumferential surface of the transverse arc-shaped filter plate of the filter plate (44).
5. The environmentally friendly disposable tableware shredder according to claim 2, characterized in that: One end of the main spindle tool assembly (421) is driven by a first gear (47) meshing with a second gear (48) at one end of the secondary spindle tool assembly (424). A motor (46) is fixedly installed on the outside of the protective cover (41), and the output shaft of the motor (46) is fixedly connected to the other end of the main spindle tool assembly (421).
6. The environmentally friendly disposable tableware shredder according to claim 1, characterized in that: A fixing plate (45) is fixedly installed on the outside of the protective cover (41). A motor (46) is installed on the upper end of the fixing plate (45). The output shaft of the motor (46) is fixedly connected to the first gear (47).
7. The environmentally friendly disposable tableware shredder according to claim 1, characterized in that: The upper end of the protective cover (41) is provided with an opening (49), which is sealed to the lower port of the tapered feed port (5), and the beginning of (2) is located directly below (6).