Kitchen garbage disposal crusher
By introducing a linkage structure of inclined baffles and bidirectional screws into the kitchen waste treatment equipment, efficient pre-compression dehydration of kitchen waste is achieved, solving the problems of insufficient crushing and clogging caused by excessive humidity, and improving the stability and applicability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI TAIQIAN AUTOMATION EQUIP CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-29
AI Technical Summary
Existing food waste processing equipment lacks an effective extrusion and dehydration process before crushing, resulting in a high liquid content in the waste, which reduces crushing efficiency, affects solid-liquid separation, and may lead to equipment blockage and increased maintenance costs.
It adopts a linkage structure of inclined baffle, bidirectional screw, nut seat and extrusion plate, and realizes pre-compression dehydration of kitchen waste through motor drive. Combined with the design of inclined extrusion plate and baffle, it ensures uniform extrusion and effective discharge of liquid, and collects it centrally through water trough and collection box.
It improves crushing efficiency and uniformity, reduces liquid splashing and clogging, extends equipment lifespan, reduces maintenance frequency and operating costs, and enhances equipment stability and applicability.
Smart Images

Figure CN224294255U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of kitchen waste technology, and in particular to a crusher for kitchen waste treatment. Background Technology
[0002] Crushing of kitchen waste is a crucial step in its treatment. It primarily involves mechanically pulverizing organic waste such as food scraps, fruit peels, and vegetable leaves to reduce particle size, facilitating subsequent solid-liquid separation, fermentation, or biological treatment processes. This process plays a vital role in municipal solid waste treatment, resource utilization, and environmental engineering; its effectiveness directly impacts subsequent processing efficiency, equipment operational stability, and resource conversion rates.
[0003] Specifically, the utility model patent CN220634518U discloses a shredder for kitchen waste treatment. Although it achieves rapid cleaning of the surface of the shredding wheel by setting up structures such as limiting grooves, inlets, inserts and scrapers, it avoids the problem of shredding efficiency being affected by the sticking of fragments, and improves the maintainability and ease of use of the equipment.
[0004] However, in practical applications, this device lacks an effective extrusion and dehydration process before crushing kitchen waste, resulting in a high liquid content in the waste. This liquid not only reduces crushing efficiency and causes uneven crushing, but also burdens the subsequent solid-liquid separation system, affecting the stability and separation effect of the overall processing flow. More seriously, these problems not only reduce the equipment's working efficiency and processing capacity, but may also lead to a series of chain reactions such as blockage in the crushing chamber, accelerated blade wear, and increased energy consumption, further increasing equipment maintenance costs and operational risks, and even posing a potential threat to the continuity and safety of the entire waste treatment system. Therefore, given the many shortcomings of existing technologies, we urgently need an innovative crusher for kitchen waste treatment to solve these problems. Utility Model Content
[0005] The purpose of this invention is to provide a crusher for kitchen waste treatment, which solves the problem that the existing technology lacks an effective extrusion and dehydration process before crushing kitchen waste, resulting in a large amount of liquid components in the waste. This liquid not only reduces crushing efficiency and causes uneven crushing, but also puts a burden on the subsequent solid-liquid separation system, affecting the stability of the overall processing flow and the separation effect.
[0006] To achieve the above objectives, this utility model provides a shredder for kitchen waste treatment, including a box body, an inclined partition that is slidably connected to the inner side of the box body, and an inclined top frame that is fixedly connected to the top of the box body.
[0007] A first motor is bolted to one side of the outer wall of the top frame, and a bidirectional screw is rotatably connected to the inner side of the top frame. One end of the bidirectional screw passes through the side wall of the top frame and is connected to the output shaft of the first motor. Both ends of the bidirectional screw are threaded to a nut seat. Extrusion plates are fixedly connected to both sides of the top of the partition, and the tops of the two extrusion plates are fixedly connected to the bottoms of the two nut seats respectively. A crushing rod is rotatably connected to the lower inner side of the box, and a second motor is bolted to one side of the outer wall of the box. One end of the crushing rod passes through the side wall of the box and is connected to the output shaft of the second motor.
[0008] The top of the partition has several water channels, and one side of the outer wall of the box is connected to a collection box, with the inlet of the collection box located at the bottom of all the water channels.
[0009] The outer side of the box is connected to a door via a hinge, and a valve is installed on the bottom side of the collection box.
[0010] Each side of the partition is fixedly connected with a sliding block, and both sliding blocks are slidably connected to the inner wall of the box through sliding grooves.
[0011] One end of the bidirectional screw is rotatably connected to the inner wall of the top frame via a rotating shaft, and the other end of the bidirectional screw passes through the side wall of the top frame via a bearing sleeve. One end of the crushing rod is rotatably connected to the inner wall of the box via a rotating shaft, and the other end of the crushing rod passes through the side wall of the box via a bearing sleeve.
[0012] Each of the two nut seats has a slider fixedly connected to its top, and the slider is slidably connected to the top of the top frame through a groove.
[0013] This utility model discloses a crusher for kitchen waste treatment. Through a linkage structure consisting of a first motor, a bidirectional screw, a nut seat, an extrusion plate, and an inclined baffle, it achieves highly efficient pre-compression and dehydration of kitchen waste. This effectively reduces the moisture content of the waste, improves crushing efficiency and uniformity, and solves problems such as insufficient crushing and clogging caused by excessive moisture in traditional equipment. The coordinated design of the inclined extrusion plate and baffle makes the extrusion process more uniform and continuous, avoiding material accumulation or uneven dehydration due to excessive local pressure, thereby improving the overall stability and consistency of the processing. After dehydration, The crushing process significantly reduces liquid splashing and adhesion to the blades, extending the service life of the crushing rod and lowering equipment maintenance frequency and operating costs. The second motor-driven crushing rod design ensures powerful crushing and high efficiency, adapting to different types and moisture levels of kitchen waste, demonstrating strong applicability and flexibility. Furthermore, the device has a reasonable overall structure and high functional integration, achieving integrated dehydration and crushing while maintaining good operational and maintenance convenience, making it suitable for both small community waste treatment stations and large urban waste treatment centers. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0015] Figure 1 This is a schematic diagram of the external structure of an embodiment of the present utility model.
[0016] Figure 2 This is a schematic diagram of the inner structure of the box body according to an embodiment of the present utility model.
[0017] Figure 3 This is a top view of an embodiment of the present invention.
[0018] Figure 4 This is a side view structural diagram of an embodiment of the present utility model.
[0019] Figure 5 This is a schematic diagram of the extrusion plate structure according to an embodiment of the present invention.
[0020] 1. Box body; 2. Door body; 3. Top frame; 4. Bidirectional screw; 5. Slider; 6. Slide groove; 7. First motor; 8. Second motor; 9. Collection box; 10. Extrusion plate; 11. Nut seat; 12. Crushing rod; 13. Partition; 14. Sliding block; 15. Sliding groove; 16. Flow groove; 17. Valve body. Detailed Implementation
[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0022] Please see Figure 1-5 A food waste crusher includes a housing 1, an inclined partition 13 slidably connected to the inner side of the housing 1, and an inclined top frame 3 fixedly connected to the top of the housing 1. A first motor 7 is fixedly connected to one side of the outer wall of the top frame 3 by bolts, and a bidirectional screw 4 is rotatably connected to the inner side of the top frame 3. One end of the bidirectional screw 4 passes through the side wall of the top frame 3 and is driven by the output shaft of the first motor 7. Both ends of the bidirectional screw 4 are threadedly connected to nut seats 11. Extrusion plates 10 are fixedly connected to both sides of the top of the partition 13, and the tops of the two extrusion plates 10 are fixedly connected to the bottoms of the two nut seats 11 respectively. A crushing rod 12 is rotatably connected to the lower inner side of the housing 1, and a second motor 8 is fixedly connected to one side of the outer wall of the housing 1 by bolts. One end of the crushing rod 12 passes through the side wall of the housing 1 and is driven by the output shaft of the second motor 8.
[0023] First, the kitchen waste to be processed is fed into the top of the container 1 and falls above the inclined partition 13. At this time, the partition 13 is in a sliding connection state and serves as the initial load-bearing structure. Then, the first motor 7, which is fixed to one side of the outer wall of the top frame 3, is started. The first motor 7 drives the bidirectional screw 4 to rotate. The two ends of the bidirectional screw 4 are connected to nut seats 11 by threaded engagement. As the screw rotates, the two nut seats 11 move in opposite directions and achieve clamping and squeezing of the kitchen waste through the compression plate 10 fixed thereto. Since the compression plate 10 is inclined and matches the partition 13, it can effectively apply uniform pressure to the waste stacked on the partition 13, thus squeezing it. The large amount of liquid contained in the waste is quickly squeezed out and discharged through the bottom of the box 1, thereby achieving pre-dehydration treatment before crushing. After the crushing is completed, the partition 13 is manually pulled out, allowing the dehydrated kitchen waste to fall into the crushing area at the bottom of the box 1 and approach the crushing rod 12. At this time, the second motor 8 is started, and its output shaft drives the crushing rod 12 to rotate through the transmission, so as to efficiently crush the waste and make it meet the particle size requirements required for subsequent solid-liquid separation or resource utilization. Throughout the process, the top frame 3 plays a supporting and guiding role, ensuring that the movement path of the bidirectional screw 4 and the nut seat 11 is stable and reliable. At the same time, its inclined structure helps the natural flow and centralized treatment of waste.
[0024] Furthermore, the top of the partition 13 is provided with several water troughs 16, and a collection box 9 is connected to one side of the outer wall of the box body 1. The inlet of the collection box 9 is located at the bottom of all the water troughs 16. After the kitchen waste is squeezed and dehydrated, the separated liquid flows out along the water troughs 16 opened at the top of the partition 13 and is collected in a concentrated manner through the collection box 9 connected to one side of the outer wall of the box body 1. The workflow realizes the effective guidance and recycling of the liquid generated before crushing and dehydration, thereby improving the overall dehydration efficiency of the equipment, facilitating the unified treatment of subsequent liquids, and preventing liquid from contaminating the internal structure of the equipment.
[0025] Furthermore, a door 2 is hinged to the outer side of the housing 1, and a valve 17 is installed on the bottom side of the collection box 9. After the liquid collection is completed, the collection box 9 can be approached by opening the door 2 and the valve 17 can be opened to discharge the collected liquid. This structure improves the convenience of cleaning and maintenance after the equipment is used, avoids residual liquid retention that may cause odor or bacterial growth, and achieves the effect of enhancing the hygiene performance of the equipment and extending its service life.
[0026] Furthermore, sliding blocks 14 are fixedly connected to both sides of the partition 13, and both sliding blocks 14 are slidably connected to the inner wall of the box 1 through sliding grooves 15, so that the partition 13 has good guidance and stability during the pulling process, avoiding the impact of poor sliding or jamming on the operating efficiency; this structure improves the smoothness and reliability of the movement of the partition 13, thereby enhancing the convenience of operation and work efficiency of the equipment when changing processing batches.
[0027] Furthermore, one end of the bidirectional screw 4 is rotatably connected to the inner wall of the top frame 3 via a rotating shaft, and the other end of the bidirectional screw 4 passes through the side wall of the top frame 3 via a bearing sleeve. One end of the crushing rod 12 is rotatably connected to the inner wall of the housing 1 via a rotating shaft, and the other end of the crushing rod 12 passes through the side wall of the housing 1 via a bearing sleeve. During the process of the first motor 7 driving the bidirectional screw 4 to rotate and the second motor 8 driving the crushing rod 12 to rotate, this structure effectively improves the rotational accuracy and operational stability of the transmission components, reduces frictional resistance and vibration, and achieves the effect of improving the operational stability and power transmission efficiency of the equipment and extending the service life of key components.
[0028] Furthermore, the top of each of the two nut seats 11 is fixedly connected to a slider 5, and the slider 5 is slidably connected to the top of the top frame 3 through the slide groove 6. This allows the nut seat 11 to have a good guiding and limiting function when it moves under the drive of the bidirectional screw 4, avoiding deviation or jamming during the movement. This improves the synchronization and stability of the extrusion plate 10's movement, and achieves the effect of enhancing the control precision and smooth operation during the dehydration process.
[0029] In summary:
[0030] First, the kitchen waste to be processed is put into the top of the container 1 and falls on the inclined partition 13. At this time, the partition 13 is slidably connected to the sliding groove 15 on the inner wall of the container 1 through the sliding blocks 14 fixed on both sides, so that it has good guidance and stability and is used as a preliminary load-bearing structure. Then, the first motor 7 fixed on one side of the outer wall of the top frame 3 is started. Its output shaft drives the bidirectional screw 4 to rotate. One end of the bidirectional screw 4 is rotatably connected to the inner wall of the top frame 3 through the rotating shaft, and the other end passes through the side wall of the top frame 3 through the bearing sleeve to improve the rotation accuracy and running stability. The rotation of the bidirectional screw 4 causes the two nut seats 11, which are screwed together at both ends, to move in opposite directions. These nuts slide along the grooves 6 on the top of the top frame 3 via sliders 5 fixed to their respective tops, ensuring good guidance and limiting functions during movement. This, in turn, drives the two extrusion plates 10 to clamp and uniformly extrude the kitchen waste stacked on the partition 13. Because the extrusion plates 10 are inclined and matched to the partition 13, they can effectively apply pressure, quickly squeezing out the large amount of liquid contained in the waste. The liquid flows out along the drainage channel 16 opened at the top of the partition 13 and through the box 1. The collection box 9, connected to one side of the outer wall, is used for centralized collection to prevent liquid contamination of the internal structure of the equipment and facilitate subsequent unified processing. After dehydration, the partition 13 is manually pulled out, allowing the pre-treated kitchen waste to fall into the crushing area at the bottom of the box 1 and approach the crushing rod 12. At this time, the second motor 8 is started, and its output shaft drives the crushing rod 12 to rotate through the transmission. One end of the crushing rod 12 is rotatably connected to the inner wall of the box 1 through a rotating shaft, and the other end passes through the side wall of the box 1 through a bearing sleeve, ensuring stable power transmission and smooth operation during the crushing process. The crushing rod 12 performs high-pressure crushing of the waste. The waste is effectively crushed to meet the particle size requirements for subsequent solid-liquid separation or resource utilization. Throughout the process, the top frame 3 provides support and guidance, ensuring the stable and reliable movement path of the bidirectional screw 4 and nut seat 11. Its inclined structure also facilitates the natural flow and centralized treatment of the waste. The dehydrated liquid is finally collected in the collection box 9. The collection box 9 can be accessed through the door 2, which is connected to the outside of the box 1 by a hinge, and the valve 17 installed at the bottom can be opened for drainage. This facilitates cleaning and maintenance and avoids residual liquid retention that could lead to odors or bacterial growth.First, through the linkage structure of the first motor 7, the bidirectional screw 4, the nut seat 11, the slider 5 and the slide groove 6, and the extrusion plate 10, efficient pre-compression dehydration of kitchen waste is achieved, effectively reducing the moisture content in the waste, improving crushing efficiency and uniformity, and solving problems such as insufficient crushing and clogging caused by excessive humidity in traditional equipment. Second, through the coordinated design of the water channel 16 opened on the top of the partition 13 and the collection box 9, the liquid generated during the dehydration process can be effectively guided and collected, improving the overall dehydration efficiency, while avoiding liquid contamination of the equipment interior, and improving the cleanliness and safety of equipment operation. Third, through the coordinated design of the sliding block 14 and the sliding groove 15, the guiding and stability of the partition 13 during the pulling process are enhanced, improving the ease of operation and work efficiency when changing processing batches. Fourth, through the bidirectional screw 4, one end is connected to a rotating shaft, and the other end is connected to a... The design connecting the bearing sleeve to the top frame 3, and the structure connecting both ends of the crushing rod 12 to the housing 1 via rotating shafts and bearing sleeves, effectively improves the rotational accuracy and operational stability of the transmission components, reduces frictional resistance and vibration, extends the service life of key components, and enhances the overall operational stability of the equipment. Fifth, the hinge connection structure between the door 2 and the housing 1, along with the valve 17 at the bottom of the collection box 9, improves the ease of cleaning and maintenance after use, avoids hygiene problems caused by residual liquid, and enhances the hygiene performance and durability of the equipment. Sixth, in practical applications, this device not only improves the continuity and automation level of kitchen waste treatment but also provides more favorable conditions for subsequent solid-liquid separation, anaerobic fermentation, and other processes, increasing resource recovery rate and environmental benefits, and providing practical technical support for promoting the reduction, harmlessness, and resource utilization of kitchen waste.
[0031] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.
Claims
1. A shredder for processing kitchen waste, comprising a housing, characterized in that, It also includes an inclined partition that slides on the inside of the box, and an inclined top frame that is fixedly connected to the top of the box; A first motor is bolted to one side of the outer wall of the top frame, and a bidirectional screw is rotatably connected to the inner side of the top frame. One end of the bidirectional screw passes through the side wall of the top frame and is connected to the output shaft of the first motor. Both ends of the bidirectional screw are threaded to a nut seat. Extrusion plates are fixedly connected to both sides of the top of the partition, and the tops of the two extrusion plates are fixedly connected to the bottoms of the two nut seats. A crushing rod is rotatably connected to the lower inner side of the box, and a second motor is bolted to one side of the outer wall of the box. One end of the crushing rod passes through the side wall of the box and is connected to the output shaft of the second motor.
2. The shredder for kitchen waste treatment as described in claim 1, characterized in that, The top of the partition is provided with several water channels, and a collection box is connected to one side of the outer wall of the box, with the inlet of the collection box located at the bottom of all the water channels.
3. A shredder for kitchen waste treatment as described in claim 2, characterized in that, The outer side of the box is connected to a door via a hinge, and a valve is installed on the bottom side of the collection box.
4. A shredder for kitchen waste treatment as described in claim 1, characterized in that, Both sides of the partition are fixedly connected to sliding blocks, and both sliding blocks are slidably connected to the inner wall of the box through sliding grooves.
5. A shredder for kitchen waste treatment as described in claim 1, characterized in that, One end of the bidirectional screw is rotatably connected to the inner wall of the top frame via a rotating shaft, and the other end of the bidirectional screw passes through the side wall of the top frame via a bearing sleeve. One end of the crushing rod is rotatably connected to the inner wall of the box via a rotating shaft, and the other end of the crushing rod passes through the side wall of the box via a bearing sleeve.
6. A shredder for kitchen waste treatment as described in claim 1, characterized in that, Both of the nut seats have a slider fixedly connected to their tops, and the slider is slidably connected to the top of the top frame via a groove.