Kitchen garbage processor for solid-liquid separation and reuse
By combining a double-roll crushing mechanism and centrifugal separation technology with a screw conveyor and an oil-water separator, the problems of uneven crushing, low solid-liquid separation efficiency, and odorous gas emission in kitchen waste treatment have been solved, achieving efficient solid-liquid separation and resource recovery, and improving treatment efficiency and environmental friendliness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENYANG INST OF TECH
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-21
AI Technical Summary
Existing kitchen waste treatment equipment suffers from problems such as uneven crushing, low solid-liquid separation efficiency, odorous gas emission, and loose and disordered solid residue, resulting in low treatment efficiency and poor environmental performance.
The system employs a double-roll crushing mechanism in conjunction with a feeding screw to achieve uniform crushing of waste; it combines centrifugal separation and a screw conveyor for solid-liquid separation, and recovers grease and moisture through an oil-water separation device, while also being equipped with a cabinet unit to suppress the emission of malodorous gases.
It improves the efficiency of waste disposal and resource utilization, reduces the difficulty of transportation and processing costs, and improves the working environment.
Smart Images

Figure CN224525588U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the treatment of kitchen waste, and more particularly to a kitchen waste treatment machine that separates solid and liquid for reuse. Background Technology
[0002] Food waste, due to its perishable nature and high moisture and organic matter content, faces multiple technical challenges in its disposal. Traditional processing equipment mainly suffers from the following technical bottlenecks:
[0003] First, the crushing unit has difficulty in achieving material homogenization, and uneven crushing particle size will lead to low efficiency in subsequent processing steps.
[0004] Second, the lack of proper sealing during the transport of kitchen waste leads to significant problems with the escape of volatile organic compounds and malodorous gases such as hydrogen sulfide, posing a source of occupational health hazards.
[0005] Third, the solid residue after separation is loose and disordered, which increases the difficulty of transportation; and it lacks solid-liquid separation function, resulting in large waste volume and high treatment costs.
[0006] These problems hinder the efficiency and environmental friendliness of food waste treatment, and an effective solution is urgently needed. Summary of the Invention
[0007] This utility model addresses the shortcomings of existing technologies by providing a solid-liquid separation and reuse kitchen waste processing machine.
[0008] To achieve the above objectives, this utility model adopts the following technical solution: a kitchen waste treatment machine for solid-liquid separation and reuse, comprising a cabinet unit, which internally houses a crushing unit, a separation unit, a solid collection unit, and a liquid collection unit. The crushing unit includes a crushing chamber containing a double-roller crushing mechanism. This crushing unit crushes the kitchen waste and outputs it via a feeding screw. The double-roller crushing mechanism includes a first crushing roller and a second crushing roller that interlock, and both are driven (linked) to rotate by a drive motor. The separation unit receives the crushed material and performs solid-liquid separation. This separation unit includes a centrifugal separation mechanism and a centrifugal motor that drives it, outputting through a solid outlet and a water outlet pipe of the separation tank, respectively. The solid collection unit receives and transports solid residue from the solid outlet of the separation tank. The liquid collection unit processes the liquid from the water outlet pipe of the separation tank.
[0009] Furthermore, the cabinet unit is equipped with a set of wheels at the bottom.
[0010] Furthermore, the drive motor is connected to the drive gear via belt drive. The drive gear meshes with the first-stage transmission gear, which is fixed to the first rotating shaft and drives the first crushing roller to rotate through the first rotating shaft. The first-stage transmission gear also meshes with the second-stage transmission gear, which is fixed to the second rotating shaft and drives the second crushing roller to rotate through the second rotating shaft. The drive gear also meshes with the screw drive gear to drive the feeding screw to output the crushed material through the slag outlet of the crushing unit.
[0011] Furthermore, a material inlet is provided on the upper surface of the cabinet unit, and the material inlet is connected to the feed port of the crushing chamber.
[0012] Furthermore, the centrifugal separation mechanism includes a centrifugal separation tank and a hollow centrifugal shaft inside it; centrifugal blades are provided at the lower end of the centrifugal shaft, and a water outlet hole is provided at the root of the centrifugal blades, which is connected to the cavity of the centrifugal shaft; a safety water hole with a height higher than the water outlet hole is provided in the middle of the centrifugal shaft.
[0013] Furthermore, a centrifugal motor is located above the centrifugal separation tank, and the centrifugal motor is used to drive the centrifugal shaft and centrifugal blades to rotate; a separation tank water outlet pipe is provided below the centrifugal shaft and communicates with its cavity, the top of the separation tank water outlet pipe is connected to the centrifugal shaft, and the bottom end of the separation tank water outlet pipe extends out of the bottom through hole of the centrifugal separation tank and is connected to the liquid collection unit; a separation tank solid outlet is provided at the lower part of the side wall of the centrifugal separation tank, and the separation tank solid outlet is connected to the solid collection unit.
[0014] Furthermore, the centrifugal separation tank is provided with a detachable centrifugal tank cover at the top, and the centrifugal motor is fixedly installed on the tank cover and its output shaft passes through the tank cover and is fixedly connected to the centrifugal rotating shaft.
[0015] Furthermore, the feeding screw of the crushing unit is horizontally positioned at the bottom of the crushing chamber, and the output end of the feeding screw is connected to the feed inlet of the centrifugal separator.
[0016] Furthermore, the solid collection unit includes an inclined solid screw conveyor connected to the solid outlet of the separation bucket, and a solid collection box that receives the output of the conveyor through the collection box inlet.
[0017] Furthermore, the liquid collection unit includes an oil-water separation device and a water tank. The oil-water separation device is equipped with a one-way valve, an oil drain port, and a water drain port. The inlet of the oil-water separation device is connected to the water outlet pipe of the separation tank through a connecting pipe. The oil drain port is used for grease discharge (which can subsequently flow into the recovery device), the water drain port is used for drainage, and the water tank is used to collect the water from the water drain port.
[0018] Compared with the prior art, this utility model has the following advantages.
[0019] This invention utilizes a double-roller crushing mechanism and a feeding screw working in tandem to ensure uniform crushing of waste materials, thereby improving processing efficiency. Simultaneously, a centrifugal separation mechanism combined with a screw conveyor achieves efficient solid-liquid separation and orderly collection of solid waste, reducing the difficulty of the transfer process. Furthermore, the liquid after centrifugal separation is further processed through an oil-water separator to recover grease and moisture, improving resource utilization. The cabinet design effectively suppresses the escape of odorous gases, improving the working environment. Attached Figure Description
[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The scope of protection of the present invention is not limited to the following description.
[0021] Figure 1-2 This is a schematic diagram of the external cabinet of a solid-liquid separation kitchen waste processor.
[0022] Figure 3 Illustration of the internal structure of the cabinet after removal Figure 1 .
[0023] Figure 4 This is an internal diagram showing the cabinet without its side walls.
[0024] Figure 5 Illustration of the internal structure of the cabinet after removal Figure 2 .
[0025] Figure 6 This is a side view of the internal structure of the cabinet without the side walls removed.
[0026] Figure 7 for Figure 6 A schematic diagram of BB.
[0027] Figure 8 This is a schematic diagram showing the connection between the centrifugal shaft and the centrifugal blades.
[0028] In the diagram, 1. Crushing unit; 2. Separation unit; 3. Solid collection unit; 4. Liquid collection unit; 5. Power unit; 6. Cabinet unit; 101. Crushing chamber; 102. Drive motor; 103. First crushing roller; 104. Second crushing roller; 105. Second rotating shaft; 106. First rotating shaft; 107. Secondary transmission gear; 108. Primary transmission gear; 109. Drive gear; 110. Screw drive gear; 111. Belt; 112. Feeding screw; 113. Slag outlet; 114. Waste inlet; 201, Centrifuge bucket lid; 202, Centrifuge motor; 203, Centrifuge separation bucket; 204, Centrifuge shaft; 205, Water outlet; 206, Centrifuge blades; 207, Separation bucket water outlet pipe; 208, Separation bucket solid outlet; 209, Safety water hole; 301, Solid collection box; 302, Solid screw conveyor; 303, Collection box inlet; 401, Water tank; 402, Oil-water separator; 601, Outer cover; 602, Profile frame; 603, Walking wheel set; 604, Material inlet. Detailed Implementation
[0029] like Figure 1-8 As shown, the kitchen waste processor for solid-liquid separation and reuse includes a cabinet unit 6, which contains a crushing unit 1, a separation unit 2, a solid collection unit 3, and a liquid collection unit 4.
[0030] The cabinet unit 6 serves as the basic support for the equipment. It consists of a rectangular frame composed of profile frame 602, with a steel plate cover 601 on the outer surface. A set of walking wheels 603 is installed at the bottom of the profile frame. A material inlet 604 is provided on the upper surface of the frame cover to allow the input of crushed materials. The cabinet unit provides structural support, and the material inlet 604 corresponds to the waste input end.
[0031] In the crushing unit 1, on the one hand, the drive motor 102 is the power source, which drives the drive gear 109 to rotate through the belt 111. The drive gear drives the first-stage transmission gear, which in turn drives the second-stage transmission gear. The drive gear meshes with the first-stage transmission gear, and the first-stage transmission gear meshes with the second-stage transmission gear. The first-stage transmission gear drives the first rotating shaft 106 to rotate, and the second-stage transmission gear drives the second rotating shaft 105 to rotate. Crushing rollers are installed on each of the two rotating shafts, so that the first crushing roller 103 and the second crushing roller 104, which are in pairs, rotate to achieve waste crushing.
[0032] On the other hand, the drive gear meshes with the screw drive gear 110 and drives the screw drive gear 110 to rotate. The screw drive gear is fixedly connected to the feeding screw 112 and drives the feeding screw 112 to transport the crushed material from the slag outlet 113 on the bottom side wall of the crushing chamber 101 to the centrifugal separation barrel 203 of the separation unit. The crushing chamber and the centrifugal separation barrel are connected through the slag outlet.
[0033] In separation unit 2, the main function is to separate and recycle solid residue and liquid. The specific working process is as follows: after crushing, the material enters the centrifugal separation tank 203 through the slag outlet. The tank is sealed by the tank cover 201. The centrifugal motor 202 is mounted on the cover, and the motor shaft enters the tank through the cover and is fixedly connected to the centrifugal rotating shaft 204, driving the centrifugal rotating shaft to rotate. Simultaneously, the tank cover does not interfere with the motor shaft, allowing it to rotate freely. The centrifugal rotating shaft has a hollow structure with centrifugal blades 206 fixedly connected to its lower end. A water outlet 205 is provided at the connection point between the blade root and the rotating shaft, and this water outlet is interconnected with the hollow center of the rotating shaft. A separation tank outlet 207 is located at the bottom of the centrifugal separation tank, connected to the hollow centrifugal rotating shaft; a solids outlet 208 is located on the lower part of the side wall; and a safety water hole 209 is located in the middle of the centrifugal rotating shaft. During operation, under centrifugal force, solid residue is thrown against the barrel wall and discharged through the solid outlet of the separation barrel; liquid flows out through the water outlet and safety water hole, achieving solid-liquid separation. The safety water hole is designed to prevent liquid from being discharged through the safety water hole if the water outlet becomes blocked.
[0034] Solid collection unit 3 is used to collect solid residue after separation. It consists of solid collection box 301, solid screw conveyor 302, and collection box inlet 303. The solid outlet 208 of the separation bucket is interconnected with one end of the solid screw conveyor 302, and the other end of the conveyor is connected to the collection box inlet 303. After entering through the solid outlet of the separation bucket, the solid residue is lifted by the solid screw conveyor and enters the solid collection box 301 for temporary storage through the inlet.
[0035] Liquid collection unit 4 processes the separated liquid. As one possible embodiment, the liquid flowing from the outlet 207 of the separation tank has two treatment paths: one is direct discharge, connected to a sewer well via a pipe, with wastewater directly discharged; the other is oil-water separation and recovery, connected to an oil-water separation device 402 via a connecting pipe. The device is also equipped with a check valve, an oil drain port, and a water drain port. Due to density differences, the grease floats to the top and is recovered through the oil drain port; the water flows into the water tank 401 through the water drain port, and after filtration, it can be reused for equipment cleaning.
[0036] As another possible embodiment, there is also a power unit 5, which provides power to the drive components of the crushing unit and the separation unit, such as the drive motor and the centrifugal motor, to ensure the operation of the equipment.
[0037] As one possible embodiment, the working process of this utility model is as follows:
[0038] S1. Kitchen waste is fed into the crushing unit through the material inlet 604. The drive motor 102 starts and drives the crushing roller to bite and crush the waste. The crushed waste falls into the feeding screw area. The feeding screw 112 spirally conveys the crushed material and sends it to the separation unit through the slag outlet 113.
[0039] S2. Specifically, the solids enter the centrifugal separator 203. The centrifugal motor 202 drives the centrifugal shaft 204 and blades 206 to rotate. Centrifugal force throws the solids against the separator wall and discharges them through the solid outlet 208. The liquid enters the central hole of the centrifugal shaft through the water outlet 205 and then flows out through the water outlet 207 of the separator. The safety water hole 209 is designed to prevent liquid from overflowing from the top of the centrifugal separator if the water outlet is blocked. When the water level in the centrifugal separator reaches the height of the safety water hole, the water can be discharged through the safety water hole into the central hole of the centrifugal shaft.
[0040] S3. After solid-liquid separation, the solid residue is lifted by the solid screw conveyor 302 and enters the solid collection box 301 through the collection box inlet 303 for temporary storage and periodic cleaning.
[0041] S4. The separated liquid can be directly discharged into the sewer well as needed, or the oil and grease can be recovered and the water purified by the oil-water separator 402 and stored in the water tank 401 for later use.
[0042] S5. After processing, the centrifugal separator lid 201 can be removed, and the draining components can be cleaned. The solids collection box 301 should be cleaned regularly, and the oil-water separator 402 should be maintained, etc.
[0043] In another possible embodiment, the inlet height of the oil-water separator is lower than the bottom height of the outlet pipe of the separator, which facilitates the entry of liquid.
[0044] In another possible embodiment, a pump can be installed on the pipeline between the outlet of the oil-water separator 402 and the water tank 401 to transport the liquid.
[0045] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.
Claims
1. A kitchen waste processing machine for solid-liquid separation and reuse, comprising a cabinet unit (6), characterized in that, The cabinet unit (6) is equipped with a crushing unit (1), a separation unit (2), a solid collection unit (3) and a liquid collection unit (4); The crushing unit (1) includes a crushing chamber (101), and a double-roll crushing mechanism is provided in the crushing chamber (101). The crushing unit (1) is used to crush kitchen waste and output it through a feeding screw (112). The double-roll crushing mechanism includes a first crushing roller (103) and a second crushing roller (104) that mesh with each other, and the two are driven to rotate by a drive motor (102). The separation unit (2) is used to receive crushed materials and perform solid-liquid separation. The separation unit (2) includes a centrifugal separation mechanism and a centrifugal motor (202) that drives it to work. The output is respectively through the solid outlet (208) of the separation tank and the water outlet pipe (207) of the separation tank. Solid collection unit (3) is used to receive and transport solid residue from the solid outlet (208) of the separation tank; Liquid collection unit (4) is used to process liquid from the outlet pipe (207) of the separation tank.
2. The kitchen waste processor according to claim 1, characterized in that, The cabinet unit (6) is equipped with a set of wheels (603) at the bottom.
3. The kitchen waste processor according to claim 1, characterized in that, The drive motor (102) is connected to the drive gear (109) via a belt (111). The drive gear meshes with the first-stage transmission gear (108), which is fixed to the first rotating shaft (106) and drives the first crushing roller (103) to rotate through the first rotating shaft (106). The first-stage transmission gear (108) also meshes with the second-stage transmission gear (107), which is fixed to the second rotating shaft (105) and drives the second crushing roller (104) to rotate through the second rotating shaft (105). The drive gear also meshes with the screw drive gear (110) to drive the feeding screw (112) to output the crushed material through the slag outlet (113) of the crushing unit (1).
4. The kitchen waste disposal machine according to claim 1, characterized in that, The upper surface of the cabinet unit (6) is provided with a material inlet (604), and the material inlet (604) is connected to the feed port of the crushing chamber (101).
5. The kitchen waste processor according to claim 1, characterized in that, The centrifugal separation mechanism includes a centrifugal separation tank (203) and a hollow centrifugal shaft (204) inside it; a centrifugal blade (206) is provided at the lower end of the centrifugal shaft (204), and a water outlet hole (205) is provided at the root of the centrifugal blade (206) and communicates with the cavity of the centrifugal shaft (204); a safety water hole (209) with a height higher than the water outlet hole (205) is provided in the middle of the centrifugal shaft (204).
6. The kitchen waste processor according to claim 5, characterized in that, A centrifugal motor (202) is located above the centrifugal separation tank (203). The centrifugal motor is used to drive the centrifugal shaft (204) and centrifugal blades (206) to rotate. A separation tank outlet pipe (207) is provided below the centrifugal shaft (204) and communicates with its cavity. The top of the separation tank outlet pipe (207) is connected to the centrifugal shaft (204), and the bottom end of the separation tank outlet pipe (207) extends out of the bottom through hole of the centrifugal separation tank (203) and is connected to the liquid collection unit (4). A separation tank solid outlet (208) is provided at the lower part of the side wall of the centrifugal separation tank (203) and communicates with the solid collection unit (3).
7. The kitchen waste processor according to claim 5, characterized in that, The centrifugal separator (203) is provided with a detachable centrifugal barrel cover (201) on the top. The centrifugal motor (202) is fixedly installed on the barrel cover and its output shaft passes through the barrel cover and is fixedly connected to the centrifugal rotating shaft (204).
8. The kitchen waste disposal machine according to claim 5, characterized in that, The feeding screw (112) of the crushing unit (1) is horizontally positioned at the bottom of the crushing chamber (101), and the output end of the feeding screw (112) is connected to the feed inlet of the centrifugal separator (203).
9. The kitchen waste disposal machine according to claim 1, characterized in that, The solid collection unit (3) includes an inclined solid screw conveyor (302) connected to the solid outlet (208) of the separation bucket, and a solid collection box (301) that receives the output of the conveyor through the collection box inlet (303).
10. The kitchen waste processor according to claim 1, characterized in that, The liquid collection unit (4) includes an oil-water separator (402) and a water tank (401). The oil-water separator is equipped with a one-way valve, an oil drain port, and a drain port. The inlet of the oil-water separator (402) is connected to the water outlet pipe (207) of the separator via a connecting pipe. The oil drain port is used for grease discharge, the drain port is used for drainage, and the water tank (401) is used to receive the water from the drain port.