Kitchen waste oil-water residue separation equipment
By combining a feeding pre-compression device and a moisture evaporation component, efficient oil-water-sludge separation of kitchen waste is achieved, solving the problem of incomplete separation in existing equipment, improving resource recycling efficiency and meeting the needs of large-scale application.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG SHENGXIANG ENERGY SAVING TECH CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-07
Smart Images
Figure CN224463410U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of kitchen waste treatment equipment, specifically, to a kitchen waste oil-water-sludge separation device. Background Technology
[0002] With the improvement of residents' living standards and the rapid development of the catering industry, the amount of food waste generated continues to rise. Its efficient treatment and resource utilization have become important issues in environmental protection and resource recycling. Food waste contains a large amount of water, grease, and solid residue. Direct discharge or simple treatment will not only cause pipe blockage and environmental pollution, but also waste the recyclable resources it contains. Currently, most food waste treatment equipment on the market focuses on single-stage processing, such as crushing, dehydration, or oil-water separation, resulting in low overall processing efficiency and difficulty in achieving efficient and coordinated separation of oil, water, and residue.
[0003] In the prior art, Chinese utility model patent with publication number CN202022634746.1 discloses a semi-automatic integrated device for crushing and separating three phases of kitchen waste (oil, water, and sludge). This device uses a crushing component to initially crush kitchen waste, followed by a filtration component to achieve solid-liquid separation. Finally, a float in the oil-water separation component drives the oil inlet pipe to rise and fall with the liquid level, thereby improving the oil-water separation effect. However, this device still has significant limitations in practical applications: First, the crushed waste is only simply filtered and separated by a perforated conveyor belt, leaving a large amount of water and grease residue in the solid residue, resulting in incomplete separation and low resource recovery efficiency. Second, the oil-water separation relies on the mechanical following structure of the float and the oil inlet pipe, which is insufficient for oil-water mixtures with high viscosity or in an emulsified state, easily leading to water or oil contamination in the oil. Third, the device adopts a semi-automatic operation mode, requiring manual intervention in multiple stages, and the loose connections between components result in poor overall process continuity, making it difficult to meet the needs of large-scale applications. Utility Model Content
[0004] The purpose of this invention is to provide a kitchen waste oil-water-sludge separation device to solve the problem mentioned in the background art that the crushed waste is simply filtered and separated by a perforated conveyor belt, resulting in a large amount of water and oil remaining in the solid residue, and the incomplete separation leads to low resource recycling efficiency.
[0005] To achieve the above objectives, this utility model provides a kitchen waste oil-water-slag separation device, including a shell, a feeding pre-compression device installed on the top of the shell, a water evaporation component connected to one end of the feeding pre-compression device, an oil-water separation chamber connected to the bottom of one end of the water evaporation component, an oil collection tank provided on the upper part of one side of the oil-water separation chamber, and a water collection tank provided on the lower part of one side of the oil-water separation chamber. The feeding pre-compression device is used to pre-compress the kitchen waste and transport it to the water evaporation component. The water evaporation component is used to separate the slag and water, the slag and water are transported to the oil-water separation chamber, the finished product is transported to the finished product tank, and the oil-water separation chamber is used to further separate the oil and water.
[0006] This setup integrates core modules such as a feeding pre-compression device, a moisture evaporation component, and an oil-water separation chamber into a single shell, forming a continuous "pre-compression-evaporation-separation" process. The feeding pre-compression device initially compresses the waste to remove some moisture. The moisture evaporation component then separates the waste into solids and water. Finally, the oil-water separation chamber completes the fine separation of oil and water. All modules are directly connected via pipelines or structures to form a closed-loop processing system.
[0007] As a preferred embodiment of this utility model, a pulley is installed at the bottom of the outer shell, the feeding pre-compression device includes a pre-compression chamber, a rotating shaft is horizontally installed inside the pre-compression chamber, a spiral pressing plate is installed on the rotating shaft, a pressing sleeve is sleeved at one end of the rotating shaft near the spiral pressing plate, a slag discharge ring is installed at one end of the pressing sleeve, and a feeding port is provided at the top of one end of the pre-compression chamber.
[0008] This feature includes pulleys at the bottom of the casing to allow for flexible movement of the equipment; the feeding and pre-compression device pushes the waste through the rotating spiral pressing plates in the pre-compression chamber, which, together with the squeezing of the inner wall of the pressing sleeve, initially compresses the waste during the conveying process; the slag discharge ring controls the discharge speed; and the feeding port facilitates the input of waste.
[0009] As a preferred embodiment of this utility model, one end of the rotating shaft is driven to rotate by a first drive motor, and the other end of the rotating shaft is rotatably connected to the inner wall of the pre-compression chamber through a bearing.
[0010] This configuration involves the first drive motor providing rotational power to the shaft, with a bearing supporting the other end of the shaft. This ensures the stability of the spiral pressing sheet during high-speed rotation and reduces vibration and wear caused by eccentricity.
[0011] As a preferred embodiment of this utility model, the slag discharge ring is provided with a slag discharge channel inside, the diameter of the slag discharge channel is larger than the width of the spiral pressing plate, the inner wall of the pressing sleeve is provided with a pressing channel, the inner diameter of the pressing channel is adapted to the width of the spiral pressing plate, and the outer wall of the pressing sleeve is fitted with the inner wall of the pre-pressing chamber.
[0012] This setting features a slag discharge channel diameter larger than the screw press plate width to prevent residue from getting stuck; the inner diameter of the pressing channel is matched with the width of the screw press plate to form a tight compression space, enhancing the pre-compression and dewatering effect; the pressing sleeve fits snugly against the inner wall of the pre-compression chamber to prevent waste from leaking out from the gaps.
[0013] As a preferred embodiment of this utility model, the outer wall of the slag discharge ring is provided with an external thread, the inner wall of the pre-compression chamber is provided with an internal thread, the slag discharge ring is threadedly connected to the inner wall of the pre-compression chamber, the slag discharge ring is adjusted by rotating it via a handle, a locking block is installed on one side of the handle, a locking slot is provided on one side of the slag discharge ring, the locking block and the locking slot engage, and the middle part of the handle is sleeved on the rotating shaft.
[0014] This feature includes a slag discharge ring connected to the inner thread of the pre-compression chamber via an external thread. Rotating the handle adjusts the position of the slag discharge ring, thereby changing the effective length of the compression channel. The engagement of the locking block and the locking jaws allows for quick disassembly of the handle without affecting the normal operation of the shaft. The compression intensity can be flexibly adjusted according to the moisture content of the waste (e.g., high-moisture waste like vegetable leaves or low-moisture waste like bones). The detachable handle facilitates equipment maintenance.
[0015] As a preferred embodiment of this utility model, the water evaporation assembly includes a vacuum chamber, a vacuum pump is connected to the top of one end of the vacuum chamber, two slag-water separation rods are arranged inside the vacuum chamber, the slag-water separation rods are arranged in parallel and spiral blades are installed on the outer wall, an electric heating plate is installed on the top inner wall of the vacuum chamber, one end of the slag-water separation rod is driven to rotate by a second drive motor, and an electric heating wire is installed inside the slag-water separation rod.
[0016] This system utilizes a vacuum chamber to create a negative pressure environment, lowering the boiling point of water. An electric heating plate provides external heating, while internal heating wires within the slag-water separation rod provide internal heating. This dual heating, combined with the rotating spiral blades, accelerates water evaporation and residue separation. A second drive motor rotates the separation rods to transport the residue. The vacuum environment and dual heating enhance water evaporation efficiency; the spiral pushing design of the dual separation rods prevents residue accumulation and improves separation uniformity.
[0017] As a preferred embodiment of this utility model, one end of the vacuum chamber is connected to the finished product tank through a pipeline, and an oil-water strainer is installed at the bottom of the vacuum chamber to drain the oil and water into the oil-water separation chamber. A feed inlet is provided at the top of one end of the vacuum chamber, and the feed inlet is connected to the discharge end of the feeding pre-compression device.
[0018] This system features a vacuum chamber that receives pre-compressed waste through the inlet. The oil-water mixture, filtered and separated by an oil-water strainer, flows to an oil-water separation chamber. The residue is transported via pipeline to the finished product tank, forming a "residue-oil-water" separation channel. The strainer's pore size design effectively intercepts solid particles, preventing clogging of the oil-water separation chamber; the separation channel allows for the independent collection of the three products.
[0019] As a preferred embodiment of this utility model, an oil drain pipe is installed on one side of the oil-water separation chamber near the oil collection tank, a drain pipe is installed on one side of the oil-water separation chamber near the water collection tank, and an opening is provided at the top of the oil-water separation chamber.
[0020] This system utilizes the density difference between oil and water to naturally separate them. The upper layer of oil flows into an oil collection tank through an oil drain pipe, while the lower layer of water flows into a water collection tank through a drain pipe. The top opening receives the oil-water mixture from the vacuum chamber. This gravity stratification combined with directional drainage design meets industrial recycling and discharge standards.
[0021] As a preferred embodiment of this utility model, the bottom inner wall of the oil-water separation chamber is provided with an inclined surface, the lower end of the inclined surface is located at the drain pipe, and a level gauge is installed on one side outer wall of the oil-water separation chamber.
[0022] This design features a sloping bottom at the bottom of the oil-water separator to guide the separated water towards the drain pipe. Gravity accelerates the water flow towards the outlet, reducing the water's residence time within the separator. The sloping design improves drainage efficiency, prevents secondary emulsification caused by water accumulation within the separator, reduces the risk of water stagnation and spoilage at the bottom of the separator, and minimizes odor generation.
[0023] The level gauge monitors the liquid level and oil-water interface in the oil-water separation chamber in real time, allowing operators to understand the separation status and adjust the oil and water discharge schedule accordingly. Visualized level monitoring improves the controllability of the separation process, preventing oil contamination in the water due to premature oil discharge or water contamination in the oil due to delayed oil discharge, thus reducing the frequency of manual inspections.
[0024] As a preferred embodiment of this utility model, the inside of the rotating shaft is a hollow structure and is equipped with an electric heating wire, and the inner wall of the pressing sleeve is also provided with internal teeth that cooperate with the spiral pressing plate.
[0025] This setup achieves thorough dehydration through internal heating of the rotating shaft, and fully squeezes the oil and water by using internal teeth in conjunction with the spiral pressing plate, thus improving the pretreatment effect of the feeding and pre-pressing device.
[0026] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0027] 1. In this kitchen waste oil-water-slag separation equipment, the feeding pre-compression device uses the cooperation of the spiral pressing plate and the pressing sleeve to perform preliminary compression and dehydration of kitchen waste, and discharge some free water in advance, reducing the processing load of the subsequent moisture evaporation component; the moisture evaporation component adopts a combination design of vacuum chamber and electric heating plate, which lowers the boiling point of water in a vacuum environment. Combined with the spiral conveying and squeezing action of the slag-water separation rod, the slag-water separation is more thorough, solving the problem of high moisture content of residue in traditional filtration separation. At the same time, the slag-water separation rod is equipped with an electric heating wire, and the electric heating wire and the electric heating plate are used for synchronous internal and external heating to achieve a full drying effect.
[0028] 2. In this kitchen waste oil-water-sludge separation equipment, the oil-water separation chamber receives the evaporated oil-water mixture through the top opening. It utilizes the density difference between oil and water to naturally separate into layers. Combined with the bottom sloping design, it accelerates the collection of water into the drain pipe. With the help of a level gauge to monitor the separation interface in real time, it effectively avoids the situation of water in oil or oil in water.
[0029] 3. In this kitchen waste oil-water-sludge separation equipment, the equipment achieves the separate recycling of residue, oil, and water through a finished product tank, an oil collection tank, and a water collection tank. The residue can be further processed into bio-compound fertilizer, the oil can be used as an industrial raw material (such as for biodiesel production), and the water can be discharged into the municipal pipe network after simple treatment, achieving "zero waste" resource utilization of kitchen waste. The low-temperature evaporation design under vacuum environment also reduces the quality degradation of oil caused by high-temperature oxidation, thereby improving the utilization value of the recovered oil. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0031] Figure 2 This is a schematic diagram of the feeding and pre-compression device in this utility model;
[0032] Figure 3 This is a schematic diagram of the structure of the pressure sleeve in this utility model;
[0033] Figure 4 This is a schematic diagram of the slag discharge ring in this utility model;
[0034] Figure 5 This is a side view of the slag discharge ring in this utility model.
[0035] Figure 6 This is a schematic diagram of the structure of the moisture evaporation component in this utility model;
[0036] Figure 7 This is a schematic diagram of the slag-water separation rod in this utility model;
[0037] Figure 8 This is a schematic diagram of the external structure of the oil-water separation chamber in this utility model;
[0038] Figure 9 This is a schematic diagram of the internal structure of the oil-water separation chamber in this utility model;
[0039] The meanings of the labels in the diagram are as follows:
[0040] 1. Outer shell; 11. Pulley; 2. Feeding and pre-compression device; 21. Pre-compression chamber; 22. Rotating shaft; 221. Spiral pressing blade; 222. First drive motor; 223. Bearing; 23. Pressing sleeve; 231. Pressing channel; 24. Slag discharge ring; 241. Slag discharge channel; 242. Clamp; 243. External thread; 25. Handle; 251. Clamping block; 26. Feeding hopper; 3. Moisture evaporation assembly; 31. Vacuum chamber; 311. Feed inlet; 312. Oil-water strainer; 32. Electric heating plate; 33. Second drive motor; 34. Vacuum pump; 35. Slag-water separation rod; 351. Spiral blade; 4. Oil-water separation chamber; 41. Liquid level gauge; 42. Oil drain pipe; 43. Drain pipe; 44. Opening; 45. Inclined surface; 5. Oil collection tank; 6. Water collection tank; 7. Finished product tank. Detailed Implementation
[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0042] This utility model provides a kitchen waste oil-water-sludge separation device, such as... Figure 1 As shown, the device includes an outer shell 1, a feeding pre-compression device 2 installed on the top of the outer shell 1, a water evaporation component 3 connected to one end of the feeding pre-compression device 2, an oil-water separation chamber 4 connected to the bottom of one end of the water evaporation component 3, an oil collection tank 5 provided on the upper part of one side of the oil-water separation chamber 4, and a water collection tank 6 provided on the lower part of one side of the oil-water separation chamber 4. The feeding pre-compression device 2 is used to pre-compress the kitchen waste and transport it to the water evaporation component 3. The water evaporation component 3 is used to separate the residue and water. The residue and water are transported to the oil-water separation chamber 4, the finished product is transported to the finished product tank 7, and the oil-water separation chamber 4 is used to further separate the oil and water.
[0043] The core modules, including the feeding pre-compression device 2, the moisture evaporation component 3, and the oil-water separation chamber 4, are integrated through the outer shell 1 to form a continuous "pre-compression-evaporation-separation" processing flow. The feeding pre-compression device 2 initially compresses the waste to remove some moisture. The moisture evaporation component 3 achieves slag-water separation in the subsequent stage. The oil-water separation chamber 4 finally completes the fine separation of oil and water. Each module is directly connected through pipelines or structures to form a closed-loop processing system. The oil collection tank 5, water collection tank 6, and finished product tank 7 collect the corresponding products respectively. This achieves integrated and continuous processing of kitchen waste oil, water, and slag, avoiding the problem of disconnected processes in traditional equipment and improving processing efficiency. The modular integrated design reduces the overall size of the equipment, saving 40% of installation space compared to split-type equipment.
[0044] In this embodiment, as Figure 1 , Figure 2 As shown, a pulley 11 is installed at the bottom of the outer shell 1. The feeding pre-compression device 2 includes a pre-compression chamber 21. A rotating shaft 22 is horizontally installed inside the pre-compression chamber 21. A spiral pressing plate 221 is installed on the rotating shaft 22. A pressing sleeve 23 is sleeved at one end of the rotating shaft 22 near the spiral pressing plate 221. A slag discharge ring 24 is installed at one end of the pressing sleeve 23. A feeding port 26 is provided at the top of one end of the pre-compression chamber 21.
[0045] The pulleys 11 at the bottom of the outer casing 1 enable flexible movement of the equipment; inside the pre-compression chamber 21 of the feeding and pre-compression device 2, the spiral pressing plate 221 on the rotating shaft 22 rotates and pushes the garbage, which is squeezed by the inner wall of the pressing sleeve 23, so that the garbage is initially compressed during the conveying process. The slag discharge ring 24 controls the discharge speed, and the feeding port 26 facilitates garbage input. The pulley 11 design allows the equipment to adapt to different sites such as kitchens and garbage stations, improving its mobility; the cooperation between the spiral pressing plate 221 and the pressing sleeve 23 improves the pre-compression and dehydration rate of the garbage, reduces the load on subsequent processing, and at the same time avoids garbage clogging the feeding channel.
[0046] Specifically, such as Figure 2 As shown, one end of the rotating shaft 22 is driven to rotate by the first drive motor 222, and the other end of the rotating shaft 22 is rotatably connected to the inner wall of the pre-compression chamber 21 through the bearing 223.
[0047] The first drive motor 222 provides rotational power to the rotating shaft 22, and the bearing 223 supports the other end of the rotating shaft 22, ensuring the stability of the spiral pressing plate 221 during high-speed rotation and reducing vibration and wear caused by eccentricity. The double-end support structure reduces the vibration amplitude of the rotating shaft 22 during operation and reduces equipment noise; the direct drive of the first drive motor 222 reduces power loss, improves transmission efficiency, and reduces energy consumption.
[0048] Furthermore, such as Figure 3 , Figure 4As shown, the slag discharge ring 24 is provided with a slag discharge channel 241 inside. The diameter of the slag discharge channel 241 is larger than the width of the spiral pressing plate 221. The inner wall of the pressing sleeve 23 is provided with a pressing channel 231. The inner diameter of the pressing channel 231 is adapted to the width of the spiral pressing plate 221. The outer wall of the pressing sleeve 23 is in contact with the inner wall of the pre-pressing chamber 21.
[0049] The diameter of the slag discharge channel 241 of the slag discharge ring 24 is larger than the width of the spiral pressing plate 221 to prevent residue from getting stuck; the inner diameter of the pressing channel 231 of the pressing sleeve 23 is matched with the width of the spiral pressing plate 221 to form a tight compression space and enhance the pre-compression dewatering effect; the outer wall of the pressing sleeve 23 fits snugly against the inner wall of the pre-compression chamber 21 to prevent waste from leaking out from the gaps. The precise fit between the pressing channel 231 and the spiral pressing plate 221 increases the density of the pre-compressed waste and the amount of free water discharged; the anti-jamming design of the slag discharge channel 241 extends the continuous trouble-free operation time of the equipment.
[0050] Furthermore, such as Figure 5 As shown, the outer wall of the slag discharge ring 24 is provided with an external thread 243, and the inner wall of the pre-compression chamber 21 is provided with an internal thread. The slag discharge ring 24 is threadedly connected to the inner wall of the pre-compression chamber 21. The slag discharge ring 24 is adjusted by rotating it through the handle 25. A locking block 251 is installed on one side of the handle 25, and a locking slot 242 is provided on one side of the slag discharge ring 24. The locking block 251 and the locking slot 242 are engaged. The middle part of the handle 25 is sleeved on the rotating shaft 22.
[0051] The external thread 243 on the outer wall of the slag discharge ring 24 connects to the internal thread on the inner wall of the pre-compression chamber 21. Rotating the handle 25 adjusts the position of the slag discharge ring 24, thereby changing the effective length of the pressing channel 231. The locking block 251 on one side of the handle 25 engages with the locking slot 242 on one side of the slag discharge ring 24, allowing the handle 25 to be quickly disassembled without affecting the normal operation of the rotating shaft 22. The compression intensity can be flexibly adjusted according to the moisture content of the waste. The detachable handle 25 facilitates equipment maintenance and shortens repair time.
[0052] Furthermore, such as Figure 6 , Figure 7 As shown, the water evaporation assembly 3 includes a vacuum chamber 31. A vacuum pump 34 is connected to the top of one end of the vacuum chamber 31. Two slag-water separation rods 35 are arranged inside the vacuum chamber 31. The slag-water separation rods 35 are arranged in parallel and have spiral blades 351 installed on their outer walls. An electric heating plate 32 is installed on the inner wall of the top of the vacuum chamber 31. One end of the slag-water separation rod 35 is driven to rotate by a second drive motor 33. An electric heating wire is installed inside the slag-water separation rod 35.
[0053] The vacuum chamber 31 of the water evaporation assembly 3 creates a negative pressure environment through a vacuum pump 34, lowering the boiling point of water. An electric heating plate 32 on the inner wall of the top of the vacuum chamber 31 provides external heating. Two parallel slag-water separation rods 35 are arranged inside, with internal electric heating wires providing internal heating. The spiral blades 351 on the outer wall of the slag-water separation rods 35 rotate and push, accelerating water evaporation and separating residue. A second drive motor 33 drives the slag-water separation rods 35 to rotate, achieving residue transport. The vacuum environment combined with dual heating improves water evaporation efficiency and reduces the moisture content of the residue. The spiral pushing design of the dual slag-water separation rods 35 avoids residue accumulation, improves separation uniformity, and saves energy compared to a single heating method.
[0054] Furthermore, such as Figure 6 As shown, one end of the vacuum chamber 31 is connected to the finished product tank 7 through a pipeline. An oil-water strainer 312 is installed at the bottom of the vacuum chamber 31 to drain the oil and water to the oil-water separation chamber 4. A feed inlet 311 is provided at the top of one end of the vacuum chamber 31, and the feed inlet 311 is connected to the discharge end of the feeding pre-compression device 2.
[0055] Vacuum chamber 31 receives pre-compressed waste from the discharge end of feeding pre-compressing device 2 through inlet 311. The oil-water mixture separated by oil-water strainer 312 at the bottom is sent to oil-water separation chamber 4, and the residue is transported to finished product tank 7 through pipeline, forming a "sludge-oil-water" diversion channel. The pore size design of oil-water strainer 312 can effectively intercept solid particles and avoid clogging of oil-water separation chamber 4; the diversion channel allows the three products to be collected independently, improving the purity of resource classification.
[0056] Furthermore, such as Figure 8 As shown, an oil drain pipe 42 is installed on one side of the oil-water separation chamber 4 near the oil collection tank 5, and a drain pipe 43 is installed on one side of the oil-water separation chamber 4 near the water collection tank 6. An opening 44 is provided on the top of the oil-water separation chamber 4.
[0057] The oil-water separation chamber 4 utilizes the density difference between oil and water to naturally separate them. An oil drain pipe 42, located near the oil collection tank 5 on one side, guides the upper layer of oil into the oil collection tank 5, while a drain pipe 43, located near the water collection tank 6 on the other side, guides the lower layer of water into the water collection tank 6. An opening 44 at the top receives the oil-water mixture from the vacuum chamber 31. This gravity-driven stratification combined with directional drainage design meets industrial recycling and discharge standards.
[0058] Furthermore, such as Figure 9 As shown, the bottom inner wall of the oil-water separation chamber 4 is provided with an inclined surface 45, and the lower end of the inclined surface 45 is located at the drain pipe 43.
[0059] The inclined surface 45 on the inner bottom wall of the oil-water separation chamber 4 guides the separated water to converge into the drain pipe 43, using gravity to accelerate the water flow towards the outlet and reduce the water's residence time in the chamber. The inclined surface 45 design improves drainage efficiency, avoids secondary emulsification caused by water accumulation in the chamber, and reduces the risk of water accumulation and spoilage at the bottom of the chamber, as well as reducing odor generation.
[0060] Furthermore, such as Figure 8 As shown, a level gauge 41 is installed on one outer wall of the oil-water separation chamber 4.
[0061] The level gauge 41 on one side of the outer wall of the oil-water separation chamber 4 monitors the liquid level and oil-water interface in real time, allowing operators to monitor the separation status and adjust the drainage rhythm of the oil drain pipe 42 and the water drain pipe 43 in a timely manner. Visualized liquid level monitoring improves the controllability of the separation process, avoids oil in the water due to premature oil drainage or water in the oil due to delayed oil drainage, improves separation stability, and reduces the frequency of manual inspection.
[0062] Furthermore, the inside of the rotating shaft 22 is a hollow structure and is equipped with an electric heating wire, and the inner wall of the pressing sleeve 23 is also provided with internal teeth that cooperate with the spiral pressing plate 221.
[0063] The internal heating of the rotating shaft 22 achieves a thorough dehydration effect, and the internal gears of the spiral pressing plate 221 achieve a thorough compression of oil and water, thereby improving the pretreatment effect of the feeding pre-compression device 2.
[0064] In use, the kitchen waste oil-water-slag separation equipment of this utility model first involves the operator feeding the collected kitchen waste into the pre-compression chamber 21 through the feeding port 26 of the feeding and pre-compression device 2. The first drive motor 222 starts and drives the rotating shaft 22 to rotate. The spiral pressing plate 221 on the rotating shaft 22 rotates with the shaft, pushing the waste along the inside of the pre-compression chamber 21 towards the slag discharge ring 24. During this process, the bearing 223 provides stable support to the other end of the rotating shaft 22, ensuring that there is no significant shaking when the spiral pressing plate 221 rotates at high speed.
[0065] During the feeding process, the waste is compressed by the spiral pressing plate 221 and the inner wall of the pressing sleeve 23. The inner diameter of the pressing channel 231 is adapted to the width of the spiral pressing plate 221, forming a tight compression space. The free water in the space is initially discharged, and the density of the dehydrated waste increases by more than 40%. To process waste with different moisture levels, such as high-moisture waste like vegetable leaves or low-moisture waste like bones, the position of the discharge ring 24 can be adjusted by using the handle 25: insert the locking block 251 of the handle 25 into the locking slot 242 of the discharge ring 24, and rotate the handle 25 to move the discharge ring 24 along the threaded structure of the inner wall of the pre-compression chamber 21, changing the effective length of the pressing channel 231 and thus adjusting the compression intensity. After adjustment, remove the handle 25 to avoid interfering with the operation of the rotating shaft 22. The pre-compressed waste is discharged through the discharge channel 241 of the discharge ring 24 and enters the next processing stage.
[0066] The pre-compressed waste enters the water evaporation component 3 through the feed port 311 at the top of the vacuum chamber 31. The vacuum pump 34 is started and the inside of the vacuum chamber 31 is evacuated to a negative pressure environment of -0.08MPa, which lowers the boiling point of water to about 45℃ so that it can evaporate, creating conditions for efficient dehydration.
[0067] The electric heating plate 32 at the top of the vacuum chamber 31 is energized and heats the waste externally. Simultaneously, the electric heating wires inside the two parallel slag-water separation rods 35 are activated, heating the waste from the inside, forming a "pincer" heating mode. The second drive motor 33 drives the slag-water separation rods 35 to rotate, and the spiral blades 351 on the outer wall push the waste along the length of the vacuum chamber 31. Under the dual action of heating and compression, the water in the waste evaporates rapidly and separates from the solid residue. The mixture of water and a small amount of grease is filtered through the oil-water strainer 312 at the bottom of the vacuum chamber 31 with a pore size of 0.5-1mm and flows into the oil-water separation chamber 4 below. The dehydrated solid residue is pushed to the end of the vacuum chamber 31 by the spiral blades 351 and transported to the finished product tank 7 for temporary storage via pipeline.
[0068] The oil-water mixture enters the oil-water separation chamber 4 through the opening 44 at the top. Utilizing the density difference between oil (approximately 0.9 g / cm³) and water (1 g / cm³), it naturally separates into layers: the oil floats on top, and the water settles at the bottom. The operator monitors the separation interface in real time using a level gauge 41 on the outer wall of the oil-water separation chamber 4. When the upper layer of oil reaches a certain thickness, the oil drain pipe 42 is opened to guide the oil into the oil collection tank 5. The lower layer of water, guided by the bottom slope 45, converges towards the drain pipe 43, which is then opened to drain the water into the water collection tank 6.
[0069] The grease in oil collection tank 5 can be further processed as a raw material for biodiesel. The solid residue in finished product tank 7 is made into bio-compound fertilizer after being decomposed. The water in water collection tank 6 can be directly discharged after passing the test, realizing the full resource utilization of kitchen waste.
[0070] Finally, it should be noted that the electronic components in the electric heating plate 32, electric heating wire, etc. in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between the electrical components in the above working principle to complete the electrical connection. They are all technologies known in the art.
[0071] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A kitchen waste oil-water-sludge separation device, comprising a shell (1), characterized in that: The top of the outer shell (1) is equipped with a feeding pre-compression device (2). One end of the feeding pre-compression device (2) is connected to a water evaporation component (3). The bottom of one end of the water evaporation component (3) is connected to an oil-water separation chamber (4). An oil collection tank (5) is provided on the upper side of one side of the oil-water separation chamber (4). A water collection tank (6) is provided on the lower side of one side of the oil-water separation chamber (4). The feeding pre-compression device (2) is used to pre-compress the kitchen waste and transport it to the water evaporation component (3). The water evaporation component (3) is used to separate the residue and water. The residue and water are transported to the oil-water separation chamber (4). The finished product is transported to the finished product tank (7). The oil-water separation chamber (4) is used to further separate the oil and water.
2. The kitchen waste oil-water-sludge separation equipment according to claim 1, characterized in that: The bottom of the outer shell (1) is equipped with a pulley (11), the feeding pre-compression device (2) includes a pre-compression chamber (21), a rotating shaft (22) is horizontally installed inside the pre-compression chamber (21), a spiral pressing plate (221) is installed on the rotating shaft (22), a pressing sleeve (23) is sleeved at one end of the rotating shaft (22) near the spiral pressing plate (221), a slag discharge ring (24) is installed at one end of the pressing sleeve (23), and a feeding port (26) is provided at the top of one end of the pre-compression chamber (21).
3. The kitchen waste oil-water-sludge separation equipment according to claim 2, characterized in that: One end of the rotating shaft (22) is driven to rotate by the first drive motor (222), and the other end of the rotating shaft (22) is rotatably connected to the inner wall of the pre-compression chamber (21) through the bearing (223).
4. The kitchen waste oil-water-sludge separation equipment according to claim 3, characterized in that: The slag discharge ring (24) is provided with a slag discharge channel (241) inside. The diameter of the slag discharge channel (241) is larger than the width of the spiral pressing plate (221). The inner wall of the pressing sleeve (23) is provided with a pressing channel (231). The inner diameter of the pressing channel (231) is adapted to the width of the spiral pressing plate (221). The outer wall of the pressing sleeve (23) is in contact with the inner wall of the pre-pressing chamber (21).
5. The kitchen waste oil-water-sludge separation equipment according to claim 4, characterized in that: The outer wall of the slag discharge ring (24) is provided with an external thread (243), and the inner wall of the pre-compression chamber (21) is provided with an internal thread. The slag discharge ring (24) is threadedly connected to the inner wall of the pre-compression chamber (21). The slag discharge ring (24) is adjusted by rotating it through a handle (25). A locking block (251) is installed on one side of the handle (25), and a locking slot (242) is provided on one side of the slag discharge ring (24). The locking block (251) and the locking slot (242) are engaged. The middle part of the handle (25) is sleeved on the rotating shaft (22).
6. The kitchen waste oil-water-sludge separation equipment according to claim 1, characterized in that: The water evaporation assembly (3) includes a vacuum chamber (31), a vacuum pump (34) is connected to the top of one end of the vacuum chamber (31), two slag-water separation rods (35) are arranged inside the vacuum chamber (31), the slag-water separation rods (35) are arranged in parallel and the outer wall is equipped with a spiral blade (351), an electric heating plate (32) is installed on the inner wall of the top of the vacuum chamber (31), one end of the slag-water separation rod (35) is driven to rotate by a second drive motor (33), and an electric heating wire is installed inside the slag-water separation rod (35).
7. The kitchen waste oil-water-sludge separation equipment according to claim 6, characterized in that: One end of the vacuum chamber (31) is connected to the finished product tank (7) through a pipeline. An oil-water strainer (312) is installed at the bottom of the vacuum chamber (31) to drain oil and water to the oil-water separation chamber (4). A feed inlet (311) is provided at the top of one end of the vacuum chamber (31). The feed inlet (311) is connected to the discharge end of the feeding pre-compression device (2).
8. The kitchen waste oil-water-sludge separation equipment according to claim 1, characterized in that: An oil drain pipe (42) is installed on one side of the oil-water separation chamber (4) near the oil collection tank (5), and a drain pipe (43) is installed on one side of the oil-water separation chamber (4) near the water collection tank (6). An opening (44) is provided on the top of the oil-water separation chamber (4).
9. The kitchen waste oil-water-sludge separation equipment according to claim 8, characterized in that: The bottom inner wall of the oil-water separation chamber (4) is provided with an inclined surface (45), the lower end of the inclined surface (45) is located at the drain pipe (43), and a level gauge (41) is installed on one side of the outer wall of the oil-water separation chamber (4).
10. The kitchen waste oil-water-sludge separation equipment according to claim 2, characterized in that: The inside of the rotating shaft (22) is hollow and is equipped with an electric heating wire. The inner wall of the pressing sleeve (23) is also provided with internal teeth that cooperate with the spiral pressing plate (221).