Three-phase separation device and kitchen waste pretreatment device

Abstract

According to the three-phase separation device and the kitchen waste pretreatment device, the efficiency of the three-phase separation device can be effectively improved by adopting a mode that a plurality of separation modules cooperate, and meanwhile, the kitchen waste in a separation cavity is stirred by utilizing a stirring device, so that grease and floating objects can be quickly separated from liquid and solid. Then the kitchen waste enters a grease layer through a hole pocket of the grease fixing device, the kitchen waste in the separation cavity is cooled so that the grease capable of being solidified can be solidified in the hole pocket to complete removal of solid grease, then floating objects are grabbed through the grabbing device, and finally the grease and liquid on the surface layer are extracted and stored through the extraction device. And outputting the solid or the solid-liquid mixture to a solid tank for storage for subsequent pulping and soft-hard separation. The stirring device, the oil fixing device, the grabbing device and the extracting device are all installed on the station disc, switching is driven through the switching motor, and the discharging pipe is combined to synchronously rotate, so that the device can adapt to output of all the separation units and solid grease and floating objects.

Description

Technical Field

[0001] This invention relates to food waste treatment technology, and in particular to a three-phase separation device and a food waste pretreatment device. Background Technology

[0002] In the treatment of food waste, achieving oil-water separation and solid-liquid separation has always been a difficult technical problem, especially in Chongqing where food waste is mainly from hot pot restaurants made with beef tallow. After cooling, the animal fat mixes with floating solidified materials such as plastic bags, films, twigs, and chopsticks, making subsequent processing difficult. Furthermore, the static stratification method is also insufficient for oil-water separation because in addition to solidified animal fat, there is also non-solidified clear oil. Therefore, this oil-water separation has always been a challenging technical problem. However, oil-water separation is an essential issue that must be addressed in food waste treatment. The separated oil can be used as industrial crude oil, and the remaining liquid can be fermented.

[0003] In addition, food waste often contains mixed debris such as stones, ceramics, iron pieces, glass, and bones. These debris need to be separated before fermentation to facilitate subsequent processing into animal feed and maximize economic benefits. However, current technology still struggles with this separation, mainly because the food waste is mixed with various sizes that are difficult to separate using conventional filtration methods. This is a major technical challenge in converting food waste into animal feed.

[0004] Therefore, how to achieve three-phase separation of oil, liquid, and solid, and how to separate harder impurities from kitchen waste are technical problems that need to be solved. Summary of the Invention

[0005] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a three-phase separation device and a pre-treatment device for kitchen waste, wherein the three-phase separation device can realize the separation of oil, liquid and solid phases.

[0006] To achieve the above objectives, the present invention provides a three-phase separation device, including a frame, a separation unit, a stirring device, an oil-solidifying device, a gripping device, and an extraction device. The stirring device, the oil-solidifying device, the gripping device, and the extraction device are all mounted on a workstation plate, which is mounted on a support of the frame. A workstation gear is mounted on the workstation plate, and the workstation gear meshes with a switching gear for transmission. The switching gear is mounted on a switching motor shaft, the switching motor shaft is mounted inside a switching motor, and the switching motor is mounted on a support. The workstation plate is assembled and fixed to one end of the vertical pipe, the vertical pipe is assembled with the bracket, and a discharge pipe is coaxially installed inside the vertical pipe. The discharge pipe is used to input the kitchen waste to be processed into the separation unit. The separation unit is multiple and is installed on the same outer circle of the vertical pipe and on the support. At least one storage tank is also installed on the same outer circle of the support corresponding to the separation unit. When the workstation plate rotates, it drives the stirring device, oil-fixing device, gripping device and extraction device to face each separation unit and storage tank respectively. At the same time, it drives the vertical pipe to rotate so that the pipeline is aligned with each separation unit. The separation chamber of the separation unit is used to store the food waste being processed. Then, it is stirred by a stirring device and left to stand so that the food waste inside is separated into layers. Next, the mesh bag of the oil-solidifying device is placed into the separation chamber to wait for the grease to solidify. Then, the mesh bag is removed to separate the solid grease. Then, the floating objects are grabbed by a grabbing device. Finally, the surface clear oil and the separated liquid are extracted by an extraction device. Finally, the solids at the bottom of the separation chamber are discharged to complete the three-phase separation.

[0007] The present invention also discloses a pretreatment device for kitchen waste, which utilizes the aforementioned three-phase separation device.

[0008] The beneficial effects of this invention are: The three-phase separation device of this invention employs multiple separation modules in a coordinated manner to effectively improve efficiency. Simultaneously, the stirring device agitates the kitchen waste within the separation chamber, rapidly separating grease, floating matter, liquids, and solids for subsequent processing. Then, the grease-solidifying device enters the grease layer through its orifice, cooling the kitchen waste within the separation chamber and causing any solidifiable grease to solidify within the orifice, thus removing the solidified grease. Next, a gripping device grabs and processes the floating matter. Finally, an extraction device extracts and stores the surface grease and liquid separately, and then outputs the solid or solid-liquid mixture to a solids tank for subsequent grinding and soft-hard separation. The stirring device, grease-solidifying device, gripping device, and extraction device are all mounted on a workstation panel, switched via a switching motor, and synchronized with the discharge pipe to accommodate the output of each separation unit and solid grease and floating matter. The entire structure is compact and primarily mechanical, robust and durable, effectively adapting to harsh processing environments.

[0009] The grinding device of this invention employs a grinding ball and a conveying disc. It primarily relies on the rotation of the grinding ball to grind soft waste into a paste, while harder waste is gradually squeezed out towards the central tube by the grinding ball's elasticity, the rotation of the conveying disc, and the compression of the grinding ball. The paste is then fed into a temporary storage cavity through the central tube, and subsequently extruded through a spiral blade into the feed hole cavity, where it is further squeezed out before being discharged. This process effectively grinds soft materials without grinding hard ones, significantly reducing the probability of crushing stones, ceramics, glass, and other debris that could contaminate the paste and affect subsequent processing and the quality of the final product. It also allows for continuous processing with high efficiency. The design, where both the grinding ball and the conveying disc rotate, effectively reduces the probability of jamming and greatly facilitates the discharge of hard materials. The spacing between the grinding balls effectively grinds soft, larger pieces of kitchen waste into smaller pieces for final output, while harder waste, unable to be ground, is gradually squeezed out towards the central tube. The entire system effectively ensures efficient and high-quality grinding of food waste while simultaneously removing foreign matter. All of this is achieved through a mechanical structure, ensuring high reliability and adaptability to harsh operating environments. Furthermore, a filtration device filters the liquid entering the grinding unit, effectively reducing the probability of grease clogging or adhering to the grinding equipment and significantly improving operational stability. Attached Figure Description

[0010] Figures 1-2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a cross-sectional view of the three-phase separation device located at the center plane of the vertical pipe 140 axis; Figure 4 This is a schematic diagram of a three-phase separation device; Figures 5-6 This is a partial structural schematic diagram of a three-phase separation device; Figure 7 This is a structural schematic diagram of the separation module 200; Figure 8 This is a partial structural diagram of the separation module 200; Figure 9 This is a schematic diagram of the structure of part 240 of the scraper; Figures 10-11 This is a structural diagram of the stirring device at point 300. Figure 12 This is a schematic diagram of the solid oil device 400; Figures 13-15 This is a partial structural diagram of the solid oil device 400; Figure 16 This is a partial structural diagram of the switch cable 480, push rod 450, and side seat 440. Figure 17 This is a schematic diagram of the gripping device 500. Figures 18-20This is a partial structural diagram of the gripping device 500; Figure 21 This is a schematic diagram of the extraction device 600; Figures 22-23 This is a partial structural diagram of the extraction device 600; Figures 24-25 This is a structural schematic diagram of the filter device 700; Figure 26 This is a partial structural diagram of the first extrusion tooth 771 and the second extrusion tooth 772; Figure 27 This is a cross-sectional view of the grinding device 800 located at the center plane of the axis of the central tube 803; Figures 28-30 This is a structural schematic diagram of the 800 grinding device; Figures 31-32 This is a schematic diagram of the structure of the pulping device 800 after removing the pulping shell 810 and the upper shell 850; Figure 33 This is a partial structural diagram of the pulping disc at 870 and the grinding ball at 990. Figure 34 This is a structural diagram of the grinding shaft 880, elastic element 806, and transmission sleeve 890. Detailed Implementation

[0011] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0012] See Figures 1-6 The food waste pretreatment device in this embodiment includes a three-phase separation device and a grinding device. The three-phase separation device is used to separate solid oil, liquid oil, liquid and solid. The grinding device is used to grind the separated solid and output hard material.

[0013] The three-phase separation device includes a frame 100, a separation unit 200, a stirring device 300, an oil-solidifying device 400, a gripping device 500, and an extraction device 600. The stirring device 300, the oil-solidifying device 400, the gripping device 500, and the extraction device 600 are all mounted on a workstation plate 150. The workstation plate 150 is rotatably mounted on a support 110 of the frame 100. A workstation gear 162 is mounted on the workstation plate 150. The workstation gear 162 meshes with a switching gear 161 for transmission. The switching gear 161 is mounted on a switching motor shaft 181. The switching motor shaft 181 is mounted inside a switching motor 180. The switching motor 180 is mounted on the support 110. In use, the switching motor 180 drives the switching motor shaft 181 to rotate, which in turn drives the station gear 162 to rotate through the switching gear 161, which in turn drives the station disk 150 to rotate synchronously. This enables the station disk 150 to drive the stirring device 300, the oil-fixing device 400, the gripping device 500, and the extraction device 600 to rotate to switch to different stations.

[0014] The workstation 150 is fixedly assembled to one end of the vertical pipe 140. The interior of the vertical pipe 140 is divided into an oil channel 141 and a water channel 142 by a vertical pipe partition 143. The bottom of the oil channel 141 is connected to the rotor of the first liquid slip ring 105 through a first pipe head 107, and the stator of the first liquid slip ring 105 is connected to the oil tank 131 through an oil inlet pipe 101. The bottom of the water channel 142 is connected to the rotor of the second liquid slip ring 106 through a second pipe head 108, and the stator of the second liquid slip ring 106 is connected to the water tank 132 through a liquid inlet pipe 102. The stators of the first liquid slip ring 105 and the second liquid slip ring 106 are both mounted on a bracket, so that when the vertical pipe 140 rotates, the oil channel 141 and the water channel 142 can remain connected to the corresponding storage tanks 133. Specifically, the first fluid slip ring 105 and the second fluid slip ring 106 can be configured with a cavity inside the stator, with the rotor installed in and sealed within the cavity, allowing for circumferential rotation. This ensures that the rotation of the first pipe head 107 and the second pipe head 108 does not affect the communication between the cavity and the oil inlet pipe 101 and the liquid inlet pipe 102. The first fluid slip ring 105 and the second fluid slip ring 106 are coaxially assembled, allowing the two rotors to rotate synchronously to accommodate the rotation of the vertical pipe 140.

[0015] A discharge pipe 103 is coaxially installed inside the vertical pipe 140. One end of the discharge pipe 103 passes through the bracket 110 and connects to the outlet of the hopper valve 121; the other end passes through the side wall of the vertical pipe 140, allowing the input of kitchen waste requiring three-phase separation into the corresponding separation unit 200. The inlet of the hopper valve 121 connects to the bottom of the hopper 120. The hopper contains the kitchen waste to be processed. In some embodiments, the hopper 120 has a heating function to maintain the kitchen waste at a temperature that allows grease to melt (around 50 degrees Celsius), facilitating subsequent processing. The hopper 120 is mounted on the bracket 110. When the hopper valve 121 is opened, the kitchen waste in the hopper 120 is fed into the discharge pipe 103 and then into the separation chamber 211 for processing. Once the required amount is reached in the separation chamber 211, the hopper valve 121 is closed.

[0016] The vertical pipe 140 is assembled with the support in a circumferentially rotatable but not axially movable manner. The cavity of the first liquid slip ring 105 and the cavity of the second liquid slip ring 106 are respectively connected to the oil tank 131 and the water tank 132 through the first connecting pipe 101 and the second connecting pipe 102. The oil tank 131 and the water tank 132 are respectively used to store the separated liquid oil and the separated liquid.

[0017] The separation unit 200 has multiple units and is installed on the same outer circle of the vertical pipe 140 and on the bracket 110. On the bracket 110, on the same outer circle corresponding to the separation unit 200, two storage tanks 133 are also installed. One storage tank 133 is used to store the separated solid oil, and the other storage tank 133 is used to store the separated floating objects (such as plastic bags, films, chopsticks, dead branches, etc.).

[0018] When the workstation plate 150 rotates, it can drive the stirring device 300, the oil-fixing device 400, the grabbing device 500, and the extraction device 600 to face each separation unit 200 and the storage tank 133 respectively. At the same time, it can drive the vertical pipe 140 to rotate so that the pipe 104 is aligned with each separation unit 200, thereby inputting the kitchen waste to be processed into the corresponding separation unit 200.

[0019] Combination Figures 1-9 The separation unit 200 includes a separation shell 210, the interior of which is a hollow separation cavity 211. The bottom of the separation cavity 211 is connected to the inlet of the separation valve 230. The outer shells of the separation shell 210 and the separation valve 230 are both mounted on the bracket 110. A circulation pipe 220 is also installed in the separation shell 210. The circulation pipe 220 is used to introduce cold water to cool the kitchen waste in the separation cavity 211, so that some of the grease will solidify.

[0020] Multiple scraper assemblies are installed on the separation shell 210. Each scraper assembly includes a scraper 240 and a scraper shaft 260. The scraper shaft 260 passes through one end of the scraper 240 and is hinged to the separation shell 210. A scraper worm gear 272 is installed on the scraper shaft 260, and the worm gear 272 meshes with a scraper worm 271 for transmission. The scraper worm 271 is disposed on or installed on a scraper motor shaft 251, which is installed inside a scraper motor 250. The scraper motor 250 is installed on the separation shell 210. When the scraper motor 250 is started, it drives the scraper worm 271 to rotate, thereby driving the scraper shaft 260 to rotate synchronously with the scraper 240. The scraper 240 is provided with scraper bristles 241.

[0021] The separation shell 210 is also provided with a limiting block 212, which is used to limit the maximum angle of rotation of the scraper 240 toward the separation shell 210, so as to ensure that the scraper is in a preset position during use. The worm gear has a one-way self-locking performance, so it can prevent the scraper 240 from rotating unnecessarily, thus ensuring the normal and stable operation of the equipment.

[0022] See Figures 1-6 , Figure 10-21 The stirring device 300, oil-solidifying device 400, gripping device 500, and extraction device 600 are respectively installed on the corresponding lifting modules. The lifting module includes a lifting fixing frame 170, which is installed on the workstation plate 150. The lifting fixing frame 170 is equipped with a lifting guide tube 171 and a lifting screw sleeve 177. The lifting guide tube 171 is axially slidably assembled with one end of the lifting optical shaft 172. The other end of the lifting optical shaft 172 is assembled with the corresponding stirring device 300, oil-solidifying device 400, gripping device 500, or extraction device 600. The lifting screw sleeve 177 is circumferentially rotatable but not axially movable assembled with the lifting fixing frame 170. The lifting screw sleeve 177 is fitted around the lifting screw 178 and is screwed onto it. One end of the lifting screw 178 is assembled with the corresponding stirring device 300, oil-solidifying device 400, gripping device 500, or extraction device 600.

[0023] A lifting worm gear 176 is fitted onto the lifting screw sleeve 177. The lifting worm gear 176 meshes with the lifting worm 175 for transmission. The lifting worm 175 is disposed on or mounted on the lifting motor shaft 174. The lifting motor shaft 174 is installed inside the lifting motor 173, which is mounted on the lifting fixed frame 170. In use, the lifting motor is started, thereby driving the lifting screw sleeve 177 to rotate via the lifting worm. This rotation, through the thread, causes the lifting screw 178 to move axially, thereby driving the corresponding stirring device 300, oil-fixing device 400, gripping device 500, or extraction device 600 to move, achieving lifting.

[0024] The lifting screw 178 has a through screw hole inside, which is used for wiring to facilitate the arrangement of wires in the corresponding stirring device 300, oil-fixing device 400, gripping device 500, or extraction device 600.

[0025] See Figures 1-6 , Figures 10-11 The stirring device 300 includes a stirring shell 310, a stirring motor 320, a stirring shaft 330, and stirring blades 340. The stirring shell 310 is assembled with the lifting optical shaft 172 and the lifting screw 178 of the corresponding lifting module. The stirring motor 320 is installed inside the stirring shell 310. The stirring shaft 330 is rotatably assembled with the stirring shell 310 but cannot move axially. The stirring shaft 330 is assembled with the output shaft of the stirring motor 330. The stirring blades 340 are installed on the stirring shaft 330. The stirring blades 340 are used to stir the kitchen waste in the separation chamber 211.

[0026] In use, the stirring blades 340 are inserted into the separation chamber 211, and then the stirring motor 320 is started. The stirring motor 320 drives the stirring blades 340 to rotate, stirring the kitchen waste in the separation chamber 211. This separates grease from liquids and solids, while also causing items with a density lower than liquid, such as films, plastic bags, wooden chopsticks, and twigs, to separate from the solids and float on the liquid surface for subsequent processing. After stirring is complete, the lifting module moves the stirring device 300 upward, causing the stirring blades 340 to exit the separation chamber 211, allowing the kitchen waste in the separation chamber 211 to settle and separate into layers.

[0027] See Figures 1-6 , Figure 12-16 The oil-fixing device 400 includes an oil-fixing shell 410, a perforated pocket 420, and a perforated flap 430. The oil-fixing shell 410 is assembled with the lifting optical shaft 172 and lifting screw 178 of the corresponding lifting module. The perforated pocket 420 is rotatably mounted on the oil-fixing shell 410 but cannot move axially. A perforated pocket gear 461 is mounted on the perforated pocket 420. The perforated pocket gear 461 meshes with a perforated pocket drive gear 462 for transmission. The perforated pocket drive gear 462 is mounted on a perforated pocket motor shaft 4711, which is installed inside a perforated pocket motor 471. The perforated pocket motor 471 is installed inside the oil-fixing shell 410. After the perforated pocket motor 471 is started, it can drive the perforated pocket 420 to rotate.

[0028] The bottom of the pocket 420 is fitted with a pocket plate 421. The pocket plate 421 is hinged to one side of the flap plate 430 via a flap shaft 401. The other side of the flap plate 430 is fitted with a switch cable head 483. The switch cable head 483 is fitted with one end of the switch cable 480. After passing through the cable hole 441, the switch cable 480 is fitted with and wound around the switch reel 481. The switch reel 481 is fitted over the switch reel shaft 482. The switch reel shaft 482 is mounted on the switch shaft bracket 423. The switch shaft bracket 423 is mounted on the pocket cover 422. The pocket cover 422 is mounted on the pocket 420.

[0029] There are two of each of the following: the flip plate 430, the switch cable 480, and the switch reel shaft 482. Each of the two switch reel shafts 482 is equipped with a switch gear 406. The switch gear 406 meshes with the switch rack 450. The two ends of the switch rack 450 are respectively provided with a toothed part 451 and a rack post 452. The toothed part 451 meshes with the switch gear 406. The rack post 452 engages with and slides with the rack post hole 442. The cable hole 441 and the rack post hole 442 are respectively provided on the corresponding side wall block 440. The side wall block 440 is installed on the inner wall of the hole pocket 420.

[0030] A limiting pin 402 is also installed on the side wall block 440. One end of the limiting pin 402 enters the rack post hole 442, and the locking part 451 cannot pass through the limiting pin 402, thereby limiting the maximum displacement point of the switch rack 450.

[0031] One of the switch reel shafts 482 is connected to the switch intermediate shaft 405 via a switch belt 403, forming a belt drive. A switch intermediate gear 404 is mounted on the switch intermediate shaft 405, which meshes with a corresponding switch gear 406 on the other switch reel shaft 482. The switch intermediate shaft 405 is assembled with a corresponding switch shaft bracket 411. One of the switch reel shafts 482 or the switch intermediate shaft 405 is assembled with the output shaft of a reel motor 472, which is mounted on an oil well housing 410. After the reel motor 472 starts, it drives the switch belt 403, thereby causing the two switch reel shafts 482 to synchronously reverse. This allows the two switch reels to synchronously wind up and unwind the corresponding switch cables 480, and the two switch racks 450 to synchronously move up or down.

[0032] When the switch rack 450 moves down to the position where the locking tooth part 451 contacts the limiting pin 402, the switch gear 406 does not mesh with the locking tooth part 451. At this time, the switch gear 406 can continue to rotate, but it does not drive the switch rack 450 to move. At this time, the hole flap 430 is in the open state. When the hole flap 430 is closed later, the switch rack 450 can be pushed against the switch gear 406, thereby restoring the mesh and driving the switch rack 450 away from the hole flap 430 to move and reset.

[0033] The perforated flap 430, perforated pocket 420, and perforated pocket plate 421 are provided with several through holes. These through holes are used to facilitate the entry of grease into the inside of the perforated pocket 420 so that the grease can solidify inside the perforated pocket 420.

[0034] Specifically, after the kitchen waste in the separation chamber 211 is stirred and allowed to settle and separate (generally for about 4 hours), the perforated bag 420 is lowered into the separation chamber 211, while the perforated flap 430 remains closed. Figure 12 (In the first state), the grease floating on the surface will pass through the through-hole into the inside of the orifice 420, while the floating matter cannot enter the inside of the orifice 420 and is squeezed downward. Cooling water is introduced into the circulation pipe 220 to cool the food waste in the entire separation chamber 211, so that the solidifiable grease will solidify in the orifice 420. Then, moving the orifice 420 upwards pulls the solid grease out of the separation chamber 211. Once the orifice 420 is higher than the scraper bristles 241, the scraper motor 250 is activated. The scraper motor 250 drives the scraper 240 to rotate towards the separation chamber 211 until it contacts and presses against the limit block 212. At this point, the scraper is below the orifice 420. Then, the orifice 420 is moved downwards so that the orifice flap 430 and the orifice plate 421 are both in close contact with the scraper bristles 241. The orifice motor 471 is activated, causing the orifice 420 to rotate back and forth at a small angle, thereby scraping the orifice flap 430 and the orifice plate 421 to scrape off the attached solids into the separation chamber 211. The small-angle rotation is mainly to avoid wire entanglement and to ensure that the bottom plate of the orifice is thoroughly scraped. This design is mainly to prevent floating matter from adhering to the bottom plate of the orifice, which would subsequently contaminate the separated solid oil and increase subsequent processing costs. After scraping is completed, the scraper 240 reverses and resets.

[0035] The orifice 420 then rotates to a position above the storage tank 133 containing solid oil, and then moves downwards, allowing it to enter the storage tank 133. The reel motor 472 is then activated, causing the switch rack 450 to move downwards towards the orifice flap 430, thus opening the flap. Simultaneously, the switch cable 480 is released, causing the orifice flap 430 to open and allowing the solid oil inside the orifice 420 to fall out and into the storage tank 133. The reel motor 472 is then reversed, causing the orifice flap 430 to close, and the orifice 420 to move upwards and exit the storage tank 133, facilitating subsequent operations.

[0036] In some embodiments, an oleophobic layer is provided on the outer wall of the hole pocket, the hole flap, and the hole pocket plate, thereby reducing the probability of solid oil adhesion.

[0037] See Figures 1-6 , Figures 17-20The gripping device 500 includes a gripping shell 510, a gripping motor 520, and multiple gripping units. The gripping shell 510 is assembled with the lifting optical shaft 172 and lifting screw 178 of the corresponding lifting module. The gripping motor 520 is mounted on the gripping shell 510. The gripping motor shaft 521 of the gripping motor 520 is assembled with the gripping drive gear 553. The gripping drive gear 553 meshes with the gripping internal gear 552 for transmission. The gripping internal gear 552 is located on the inner side of the gripping large gear 550. The gripping external gear 551 is located on the outer side of the gripping large gear 550. The gripping large gear 550 and the gripping shell 510 are rotatable but not axially movable.

[0038] The gripping unit is installed on the outer circumference of the gripping housing 510. The gripping unit includes a gripping upright plate 530, a gripping movable plate 540, and a gripping shaft frame 511. The gripping upright plate 530 and the gripping shaft frame 511 are both installed on the gripping housing 510. One end of the gripping upright plate 530 is hinged to one end of the gripping movable plate 540 via a gripping pivot 501. The gripping movable plate 540 is assembled to one end of a gripping cable 560, and the other end of the gripping cable 560 passes through a pull... The cable side shell 531 is then assembled and wound with the gripping reel 561. The gripping reel 561 is fitted outside the gripping reel shaft 571. The gripping reel shaft 571 and the gripping shaft frame 511 are rotatably assembled. A gripping bevel gear 570 is installed on the gripping reel shaft 571. The gripping bevel gear 570 meshes with the gripping external gear 551 for transmission. The cable side shell 531 is installed on the gripping upright plate 530, and the gripping cable 560 can be slidably assembled relative to the cable side shell 531.

[0039] The gripping upright plate 530 and the gripping movable plate 540 are respectively provided with grooves 502 at one end near the gripping rotating shaft 501. The grooves 502 of the gripping upright plate 530 and the gripping movable plate 540 are respectively assembled with the two ends of an elastic sheet (not shown), which is elastic. See Figure 20 In the initial state, the elastic sheet drives the gripping movable plate 540 to rotate downwards through its own elastic force, so that the gripping movable plate 540 rotates to a state parallel to the gripping upright plate 530. At this time, the end faces of the gripping movable plate 540 and the gripping upright plate 530 are close together, which can provide high strength in the vertical direction of the gripping movable plate 540, so that the gripping movable plate 540 can be inserted into the top of the liquid during use, thereby gripping floating objects.

[0040] See Figure 20 After the solid oil at the top is removed from the hopper 420, the gripping module rotates to the top of the separation chamber 211, and at this time the gripping movable plate 540 and the gripping upright plate 530 are in a parallel state (the gripping movable plate 540 is in a vertical state). Then the gripping movable plate 540 moves down and inserts into the liquid, at which time the floating object is located inside the gripping movable plate 540 and the gripping upright plate 530.

[0041] The gripping motor 520 is activated, which drives the gripping drive gear 553 to rotate, thereby driving the gripping gear 550 to rotate. The gripping gear 550 drives each gripping bevel gear 570 to rotate, thus winding up the gripping cable 560, which in turn drives the gripping movable plate 540 to rotate upwards. Figure 20 In this state, the floating object is located inside the gripping upright plate 530 and above the gripping movable plate 540. Then, the gripping module is moved upwards to remove the floating object from the separation chamber 211. The gripping module 300 is rotated to above the storage tank 133 containing the floating object. The gripping module 300 is then moved downwards so that the gripping movable plate 540 enters the storage tank 133. The gripping motor 520 is reversed, driving the gripping reel 561 to reverse and release the gripping cable 560. The gripping movable plate 540 rotates downwards under the action of the elastic sheet, releasing the floating object inside. After release, the gripping motor is rotated forward to return to the original position. Figure 20 Once the status is reached, the grabbing module moves upward to complete the reset. This design effectively removes floating debris and prevents it from mixing with solids, which would otherwise cause difficulties in separation and increased processing costs.

[0042] The gripping movable plate 540 and gripping upright plate 530 are provided with several through holes, which are used to allow liquid to pass through. In addition, there are gaps between adjacent gripping devices 500 to allow liquid to pass through.

[0043] See Figures 1-6 , Figures 21-23 The extraction device 600 includes an extraction shell 610, which is assembled with the lifting optical shaft 172 and lifting screw 178 of the corresponding lifting module. Two extraction units and one detection unit are respectively installed on the extraction shell 610. The detection unit includes a probe 680, a capacitive level gauge 682, a cable 681, and a detection shaft bracket 611. The detection shaft bracket 611 is installed on the extraction shell 610. The probe 680 is electrically connected to the capacitive level gauge 682 through the cable 681. The probe 680 is used to obtain the dielectric constant and inputs the signal into the capacitive level gauge 682 for analysis to obtain the oil-water boundary and the solid-liquid boundary. Specifically, the dielectric constant of the oil layer is about 2.2-5 (decreases with increasing temperature and increases with increasing density), the dielectric constant of the water layer is about 80 (much higher than that of the oil layer and the solid layer), and the dielectric constant of the solid layer is about 2-10 (depending on composition and humidity). The boundary can be determined by the sudden change in the dielectric constant.

[0044] The cable 681 passes through and is wound around the cable reel 692. The cable reel 692 is fitted outside the cable motor shaft, and the cable motor shaft is installed inside the cable motor 691. The capacitive level gauge 682, the cable motor 691, and the cable motor shaft are all mounted on the detection shaft bracket 611. One end of the cable 681 passes through the cable reel 692 and enters the cable motor shaft. Then, it passes through the cable motor shaft along its axis and exits, where it is electrically connected to the capacitive level gauge 682.

[0045] In use, the cable motor starts, driving the cable reel 692 to rotate, thereby releasing or rewinding the cable 681, and the probe 680 moves synchronously. One end of the probe 680 can be weighted, allowing it to sink into the oil layer, liquid layer (water layer), or solid layer under its own weight during use. The number of rotations of the cable motor and the release or retraction length of the cable 681 can be roughly calibrated through a limited number of tests, thus calibrating the vertical displacement of the probe 680. This allows the distance between the probe 680 and the extraction shell 610 to be determined when the probe 680 detects the corresponding interface, facilitating subsequent processing. Alternatively, a device capable of precisely detecting the probe displacement could be installed, such as a pull-rope displacement sensor with the pull rope mounted on the probe; however, this would be too costly, and since this embodiment does not require high accuracy in interface detection, there is no need to increase costs unnecessarily.

[0046] The extraction unit includes an extraction tube 660, a counterweight head 661 is installed on one end of the extraction tube 660, and the other end passes through a tube wheel 630 and communicates with the inside of a shaft tube 650. The tube wheel 630 is fitted outside the shaft tube 650, the shaft tube 650 is installed on an extraction shaft frame 612, and the extraction shaft frame 612 is installed on an extraction shell 610.

[0047] One end of the shaft tube 650 is assembled with the output shaft of the extraction motor 670, which is mounted on the extraction shaft bracket 612. The other end of the shaft tube 650 is connected to the manifold 641, which is located inside the manifold housing 640, which is mounted on the extraction shaft bracket 612. The manifold 641 is connected to one end of the outlet pipe 620, which is mounted on the manifold housing 640 and connected to the inlet of the water pump. The outlet of the water pump is connected to the pipe 104. The water pump is mounted on the extraction housing 610.

[0048] One extraction unit is used to extract the clean oil and input it into the oil channel through the corresponding pipe 104, while the other extraction unit is used to extract the separated liquid. The specific usage process is as follows: 1. After capturing the floating object, the extraction device 600 moves above the separation chamber 211 and then moves downwards, causing the extraction shell 610 to fit against the top surface of the separation shell 210. Then, the cable motor 691 is activated to release the cable, causing the probe 680 to move downwards. The probe 680 gradually moves downwards under gravity, while the dielectric constant is recorded, until the probe 680 reaches its maximum downward displacement or the change in dielectric constant is within a preset range. Then, the cable motor is reversed, causing the probe to move upwards and reset. During this process, the dielectric constant detected by the probe is initially relatively small (in oil), then relatively large (in liquids), and finally suddenly decreases (in solids). The point where the dielectric constant changes significantly can be used as the boundary, and the displacement at the boundary is simultaneously acquired.

[0049] 2. The extraction motor of the oil extraction unit starts, releasing the extraction tube 660, causing it to descend to above the oil-water interface (generally 1 cm above). Then, the water pump is started to pump the surface clear oil to the corresponding oil tank 131 for storage. After extraction is completed, the extraction motor reverses to rewind the extraction tube 660, returning it to its original position.

[0050] 3. The pumping unit's pumping motor starts, releasing the pumping pipe 660, causing it to descend to above the solid-liquid boundary (generally 1 cm above). Then, the water pump is started to pump the liquid into the corresponding water tank 132 for storage. After pumping is complete, the pumping motor reverses to rewind the pumping pipe 660, returning it to its original position.

[0051] 4. After extraction is complete, open the separation valve 230 to discharge the solid-liquid mixture at the bottom of the separation chamber 211 into the solid tank 190 for storage, thus completing the three-phase separation. After discharge, close the separation valve 230, and then refill the separation chamber 211 with the food waste to be processed, and repeat the cycle.

[0052] See Figures 1-2 , Figures 24-26 It also includes a filter device 700, which is used to further filter the liquid stored in the water tank 132 to remove the oil inside, so as to provide it to the grinding device 800 later.

[0053] The filtration device 700 includes a filter housing 710 and a filter belt 740. The filter housing 710 is equipped with a spray channel 720 and a filter belt 740. The filter housing 710 is provided with an oil storage chamber 712 and a temporary storage chamber 711. The oil storage chamber 712 and the temporary storage chamber 711 are respectively connected to one end of the temporary storage tube 701 and one end of the oil storage tube 702. The temporary storage tube 701 and the oil storage tube 702 are both installed on the filter housing 710.

[0054] The filter belt 740 passes around multiple rollers 751 and forms a belt drive. The rollers 751 are fitted on the roller shaft 750, which is mounted on the filter housing 710. A portion of the filter belt 740 is located below the spray groove 720 and above the temporary storage chamber 711, while another portion of the filter belt 740 is located above the oil storage chamber 712 and is pressed against the extrusion roller 760.

[0055] At one end of the jet channel 720 near the filter belt 740, an orifice plate 721 and a flow divider plate 730 are installed. The orifice plate 721 has several through holes to distribute the liquid evenly to the filter belt 740 for filtration. The flow divider plate 730 is located below the filter input pipe 703 to divide the output liquid for better distribution on the orifice plate 721. The filter input pipe 703 is installed on the filter housing 710.

[0056] One of the rollers 750 is assembled with the output shaft of the filter motor 704, which is mounted on the filter housing 710. Once started, the filter motor 704 drives the filter belt 740. The filter belt 740 is made of oil-absorbing sponge, which has good oleophilic and hydrophobic properties. During use, water can pass through while oil is absorbed, effectively reducing the oil content in the water and preventing oil from interfering with the operation of subsequent equipment. Alternatively, in this embodiment, rubber frames can be used on both sides of the filter belt 740, with the middle section fixed to the oil-absorbing support belt, thus balancing tensile strength and oil absorption / filtration performance.

[0057] The extrusion roller 760 is fitted over the extrusion roller shaft 761. Both ends of the extrusion roller shaft 761 extend through corresponding extrusion grooves (not shown) and are then assembled with the extrusion sleeve 762. The extrusion sleeve 762 is mounted on the extrusion block 790. The extrusion block 790 is assembled with one end of the spring shaft 780. The spring shaft 780 is fitted with the extrusion spring 781 and passes through the spring plate 713, and is axially slidably assembled with the spring plate 713. The extrusion spring 781 applies a thrust away from the spring plate 713 to the extrusion block 790, thereby keeping the extrusion roller 760 pressed against the filter belt 740 to achieve extrusion. The spring plate 713 is mounted on the filter housing 710.

[0058] The extrusion groove is disposed on the filter housing 710. The extrusion groove engages with and slides with the extrusion sleeve 762 (the sliding direction is towards or away from the filter belt). A second extrusion gear 772 is mounted on the extrusion sleeve 762. The second extrusion gear 772 meshes with the first extrusion gear 771 for transmission. The first extrusion gear 771 is mounted on the corresponding roller shaft 750. The teeth of the second extrusion gear 772 and the first extrusion gear 771 are relatively long, so that when the second extrusion gear 772 moves, the second extrusion gear 772 and the first extrusion gear 771 remain engaged.

[0059] During operation, the filter belt 740 continuously passes under the spray channel 720, filtering oil from the liquid. Water passes directly through the filter belt into the temporary storage chamber 711 for later storage. The operation of the filter belt 740 drives the extrusion roller 760 to reverse and extrude oil from the corresponding section of the filter belt 740. This causes the oil adsorbed by the filter belt 740 to be expelled and fall into the oil storage chamber 712 for storage. Simultaneously, solid impurities on the filter belt 740 also fall into the oil storage chamber 712, thus completing secondary oil filtration. This design is effective because some oil, especially free-floating grease, is difficult to remove directly during the separation process. Filtration effectively reduces the grease content in the water, preventing subsequent impact on the operation of the grinding device 800. Furthermore, it allows for secondary filtration of the liquid, preventing large particles from clogging subsequent pipes. The continuous circulation of the oil-absorbing sponge for oil absorption and extrusion is low-cost and highly efficient. The extrusion pressure of the extrusion roller can be adjusted by adjusting the elasticity of the extrusion spring.

[0060] See Figures 1-2 , Figures 27-34 The pulping device 800 includes a pulping shell 810 and an upper shell 850. The upper shell 850 is installed on the pulping shell 810. The inside of the pulping shell 810 is a hollow pulping chamber 811. A diversion plate 812 and a temporary storage box 830 are installed at the bottom of the pulping chamber 811. The diversion plate 812 and the temporary storage box 830 are respectively assembled with the central tube 830. The diversion plate 812 is inclined, and a pulp outlet pipe 802 is installed at the lowest point of the pulping shell 810 and the diversion plate 812. The pulp outlet pipe 802 is connected to the pulping chamber 811 to draw out the pulp produced by the pulping.

[0061] The upper shell 850 is equipped with a first spacer ring 861, a second spacer ring 862, and a third spacer ring 863. The first spacer ring 861, the second spacer ring 862, the third spacer ring 863, and the central tube 803 are coaxially assembled, and the third spacer ring 863 is installed inside the second spacer ring 862, and the second spacer ring 862 is installed inside the first spacer ring 861.

[0062] A slurry passer 870 is installed inside the second spacer ring 862 and below the third spacer ring 863. The slurry passer 870 is coaxially and rotatably fitted around the center tube 803. A slurry passer large tooth 960 is installed on the slurry passer 870. The slurry passer large tooth 960 meshes with the slurry passer intermediate tooth 952 for transmission. The slurry passer large tooth 960 is installed between the grinding shell 810 and the upper shell 850 and is rotatably but not axially movable, and is sealed together.

[0063] The intermediate tooth 952 is fitted outside the intermediate shaft 901, which is mounted on the upper shell 901. The intermediate tooth 952 meshes with the drive tooth 951, which is mounted on the motor shaft 921. The motor shaft 921 is installed inside the motor 920, which is mounted on the upper shell 850. After the motor 920 is started, it can drive the drive tooth 951 to rotate, thereby driving the large tooth 960 (mash plate 870) to reverse.

[0064] The pulping drive tooth 951 meshes with the outer tooth portion 971 of the grinding tooth 970 for transmission. The grinding tooth 970 is rotatably mounted on the upper shell 850 but cannot move axially. The grinding tooth 970 is provided with a grinding bevel tooth portion 972, which meshes with a grinding bevel gear 980 for transmission. The grinding bevel gear 980 is fitted outside the transmission sleeve 890. The transmission sleeve 890 is rotatably mounted on the first spacer ring 861 and the second spacer ring 862. The transmission sleeve 890 is fitted outside the elastic member 806 and is not rotatably assembled (or fixed) with one end of the elastic member 806 relative to it. The other end of the elastic member 806 is not rotatably assembled with one end of the grinding shaft 880 relative to it. The elastic member 806 is elastic and can provide elastic damping for the circumferential movement of the grinding shaft 880 relative to the transmission sleeve 890 while retaining corresponding space for movement.

[0065] The other end of the grinding shaft 880 enters the inner side of the second spacer ring 862 and is assembled with the grinding ball 990. Several grinding protrusions 991 are provided on the outer wall of the grinding ball 990. When in use, the grinding protrusions 991 contact the kitchen waste and cooperate with the slurry plate 870 to grind the kitchen waste into a slurry, which then flows out from the through hole of the slurry plate 870. Several through holes are provided on the slurry plate 870.

[0066] The slurry conveying disc 870 is further provided with a grinding section 871 and a material conveying section 872. The grinding section 871 cooperates with the grinding ball 871 to achieve grinding. The material conveying section 872 is an upwardly convex arc surface used to prevent the kitchen waste to be ground from entering the central tube 803. That is, the material conveying section 872 connects the central tube 803 and the grinding section 871 through the outwardly convex arc surface, and the slurry conveying disc 870 and the central shaft 803 can be assembled in a relatively circumferential rotation. The grinding section 871 is a downwardly concave arc surface to facilitate grinding with the grinding ball.

[0067] A feeding space 804 is formed between the second partition ring 862 and the third partition ring 863. This feeding space 804 is located above the grinding ball 990. A passing space is formed inside the third partition ring 863. During use, the third partition ring 863, in conjunction with the passing section 872, reduces the probability of unground waste turning over and entering the central tube, thus improving grinding quality. Harder waste, such as stones, ceramics, glass, and bones, cannot enter the space between the grinding ball 990 and the grinding section 871 for grinding. Instead, it is gradually pushed towards the passing section 872, eventually turning over and entering the central tube 803, where it enters the temporary storage cavity 831 of the temporary storage box 830 for temporary storage. When small, harder pieces of waste enter the space between the grinding ball 990 and the grinding section 871, the grinding shaft squeezes the elastic element to make way, preventing them from being ground up and contaminating the slurry, thus achieving the special function of grinding soft materials without grinding hard ones.

[0068] The upper shell 850 is equipped with a grinding input pipe 851 at the feeding space 804. The grinding input pipe 851 is connected to the outlet of the mud pump, and the inlet of the mud pump is connected to the kitchen waste in the solid tank 190. The kitchen waste is pumped to the grinding input pipe 851 and then falls onto the grinding ball 990 and the slurry plate 870 for grinding. Of course, the feeding space 804 can also introduce filtered liquid from the temporary storage chamber 711 to assist in grinding. Since the liquid has been filtered of grease, it is difficult to cause blockage of the through hole on the slurry plate 870, thereby improving the effective operating time and stability of the equipment.

[0069] The temporary storage box 830 is assembled with one end of the perforated tube 820, and the other end of the perforated tube 820 is assembled with the grinding shell 810 and a screw motor 910 is installed on this end. The interior of the perforated tube 820 is a hollow perforated tube cavity 821. Several through perforated tube holes 823 are provided on the side wall of the perforated tube 820. An output tube 822 is installed on the end of the perforated tube 820 near the screw motor 910, and the output tube 822 communicates with the perforated tube cavity 821.

[0070] A spiral blade 940 is installed inside the bore cavity 821. The spiral blade 940 is fitted onto the spiral shaft 930. The spiral shaft 930 is assembled with the output shaft of the spiral motor 910. The bore cavity 821 is connected to the temporary storage cavity 831. Part of the spiral blade 940 enters the temporary storage cavity 831.

[0071] The perforated tube 823 connects the perforated tube cavity 821 to the extrusion chamber 813, which is located inside the grinding shell 810. A spray box 840 is installed above the perforated tube 820 in the extrusion chamber 813. Several through spray holes are provided on the end of the spray box 840 facing the perforated tube 820. The interior of the spray box 840 is a hollow spray chamber 841. Liquid from the temporary storage chamber 711 is introduced into the spray chamber 841 and then sprayed from the spray holes onto the perforated tube 820, thereby assisting the slurry extruded from the perforated tube 823 to fall into the extrusion chamber. The bottom of the extrusion chamber 813 is connected to a discharge pipe 801, which is installed on the grinding shell 810 and used to output the slurry from the extrusion chamber 813.

[0072] The operation of the 800 grinding unit is roughly as follows: 1. The kitchen waste to be processed is fed into the feeding space 804 through the grinding input pipe 851, and liquid in the temporary storage chamber 711 can be introduced at the same time.

[0073] 2. Start the pulping motor 920, which drives the pulping gears 960 and 970 to rotate synchronously. The pulping gears 960 drive the pulping disc 870 to rotate, thereby rotating the food waste on the pulping disc 870, making the food waste more evenly distributed. Some of the harder food waste is squeezed into the feeding section 872. The 970 drives the grinding balls 990 to rotate, thereby grinding and squeezing some of the harder food waste into the feeding section 872. The squeezed food waste gradually turns over the feeding section 872 and enters the central tube 803, and then enters the temporary storage cavity 831.

[0074] 3. Start the screw motor 910 to drive the screw blades to rotate. The screw blades move the kitchen waste in the temporary storage chamber 831 towards the output pipe 822. During the movement, the kitchen waste is squeezed, causing the slurry inside to be squeezed out of the orifice 823 and fall into the extrusion chamber 813. At the same time, the spray chamber 841 introduces liquid from the temporary storage chamber to spray the orifice to assist in the discharge of the slurry. Finally, the kitchen waste is discharged from the output pipe 822, realizing the grinding and separation of soft and hard materials.

[0075] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0076] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A three-phase separation device, characterized in that: The system includes a frame, a separation unit, a stirring device, an oil-solidifying device, a gripping device, and an extraction device. The stirring device, oil-solidifying device, gripping device, and extraction device are all mounted on a workstation plate, which is mounted on a support of the frame. A workstation gear is mounted on the workstation plate and meshes with a switching gear for transmission. The switching gear is mounted on a switching motor shaft, which is installed inside a switching motor. The switching motor is mounted on a support. The workstation plate is assembled and fixed to one end of the vertical pipe, the vertical pipe is assembled with the bracket, and a discharge pipe is coaxially installed inside the vertical pipe. The discharge pipe is used to input the kitchen waste to be processed into the separation unit. The separation unit is multiple and is installed on the same outer circle of the vertical pipe and on the support. At least one storage tank is also installed on the same outer circle of the support corresponding to the separation unit. When the workstation plate rotates, it drives the stirring device, oil-fixing device, gripping device and extraction device to face each separation unit and storage tank respectively. At the same time, it drives the vertical pipe to rotate so that the pipeline is aligned with each separation unit. The separation chamber of the separation unit is used to store the food waste being processed. Then, it is stirred by a stirring device and left to stand so that the food waste inside is separated into layers. Next, the mesh bag of the oil-solidifying device is placed into the separation chamber to wait for the grease to solidify. Then, the mesh bag is removed to separate the solid grease. Then, the floating objects are grabbed by a grabbing device. Finally, the surface clear oil and the separated liquid are extracted by an extraction device. Finally, the solids at the bottom of the separation chamber are discharged to complete the three-phase separation.

2. The three-phase separation device according to claim 1, characterized in that: The stirring device, oil-solidifying device, gripping device, and extraction device are respectively installed on the corresponding lifting modules. Each lifting module includes a lifting fixing frame, which is mounted on a workstation plate. A lifting guide tube and a lifting screw sleeve are respectively installed on the lifting fixing frame. One end of the lifting guide tube is axially slidably assembled with the lifting optical shaft, and the other end of the lifting optical shaft is assembled with the corresponding stirring device, oil-solidifying device, gripping device, or extraction device. The lifting screw sleeve is assembled with the lifting fixing frame, fitted over the lifting screw rod and threadedly engaged with it. One end of the lifting screw rod is assembled with the corresponding stirring device, oil-solidifying device, gripping device, or extraction device. The lifting screw sleeve is fitted with a lifting worm gear, which meshes with the lifting worm for transmission. The lifting worm is set on or installed on the lifting motor shaft, which is installed inside the lifting motor. The lifting motor is installed on the lifting fixed frame.

3. The three-phase separation device according to claim 1, characterized in that: The interior of the vertical pipe is divided into an oil channel and a water channel by a vertical pipe partition. The bottom of the oil channel is connected to the rotor of the first liquid slip ring through a first pipe head, and the stator of the first liquid slip ring is connected to the oil tank through an oil inlet pipe. The bottom of the water channel is connected to the rotor of the second liquid slip ring through a second pipe head, and the stator of the second liquid slip ring is connected to the water tank through a liquid inlet pipe. The stators of the first and second liquid slip rings are both mounted on a bracket.

4. The three-phase separation device according to any one of claims 1-3, characterized in that: The separation unit includes a separation shell, the interior of which is a hollow separation cavity. The bottom of the separation cavity is connected to the inlet of the separation valve. Both the separation shell and the outer shell of the separation valve are mounted on a bracket. The separation shell is equipped with multiple scraper assemblies, each including a scraper and a scraper shaft. The scraper shaft passes through one end of the scraper and is hinged to the separation shell. A scraper worm wheel is installed on the scraper shaft, and the scraper worm wheel meshes with the scraper worm for transmission. The scraper worm is set on or installed on the scraper motor shaft, which is installed inside the scraper motor. The scraper motor is installed on the separation shell. After the solid grease is collected by the orifice of the solid grease device and moved above the scraper, the scraper rotates towards the separation chamber and moves below the orifice. The orifice moves down so that its bottom surface is in close contact with the scraper, and the orifice rotates to scrape off the deposits at the bottom of the orifice.

5. The three-phase separation device according to claim 2, characterized in that: The stirring device includes a stirring shell, a stirring motor, a stirring shaft, and stirring blades. The stirring shell is assembled with the lifting optical shaft and lifting screw of the corresponding lifting module. The stirring motor is installed inside the stirring shell. The stirring shaft is assembled with the stirring shell and the output shaft of the stirring motor. Stirring blades are installed on the stirring shaft. The stirring blades are used to stir the kitchen waste in the separation chamber.

6. The three-phase separation device according to claim 2, characterized in that: The oil-fixing device includes an oil-fixing shell, a hole pocket, and a hole flap. The oil-fixing shell is assembled with the lifting optical shaft and lifting screw of the corresponding lifting module. The hole pocket is installed on the oil-fixing shell, and a hole pocket gear is installed on the hole pocket. The hole pocket gear meshes with the hole pocket drive gear for transmission. The hole pocket drive gear is installed on the hole pocket motor shaft, the hole pocket motor shaft is installed inside the hole pocket motor, and the hole pocket motor is installed inside the oil-fixing shell. The bottom of the pocket is equipped with a pocket plate, which is hinged to one side of the pocket flap via a flap shaft. The other side of the pocket flap is assembled with one end of the switch cable. The other end of the switch cable passes through the cable hole and is assembled and wound with the switch reel. The switch reel is fitted outside the switch reel shaft. The switch reel shaft is mounted on the switch shaft bracket, which is mounted on the pocket cover. The pocket cover is mounted on the pocket. The switch reel shaft is driven to rotate directly or indirectly by a reel motor.

7. The three-phase separation device according to claim 6, characterized in that: There are two of each of the hole flap, switch cable, and switch reel shaft. Switch gears are installed on the two switch reel shafts. The switch gears mesh with the switch rack for transmission. The two ends of the switch rack are respectively provided with a toothed part and a rack post. The toothed part meshes with the switch gear for transmission. The rack post engages with and slides with the rack post hole. The cable hole and the rack post hole are respectively set on the corresponding side wall block. The side wall block is installed on the inner wall of the hole pocket. A limiting pin is also installed on the side wall block. One end of the limiting pin enters the rack post hole, and the toothed part cannot pass through the limiting pin. One of the switch reel shafts is connected to the switch intermediate shaft via a switch belt to form a belt drive. The switch intermediate shaft is equipped with a switch intermediate gear, which meshes with the switch gear corresponding to the other switch reel shaft. The switch intermediate shaft is assembled with the corresponding switch shaft bracket. One of the switch reel shafts or the switch intermediate shaft is assembled with the output shaft of the reel motor. The reel motor is mounted on the oil well housing. When the switch rack moves down to the locking part and contacts the limit pin, the switch gear and the locking part do not mesh. At this time, the switch gear can continue to rotate, but does not drive the switch rack to move. At this time, the hole flap is in the open state. When the hole flap closes later, it pushes the switch rack against the switch gear, thereby restoring the mesh and driving the switch rack away from the hole flap to move and reset.

8. The three-phase separation device according to claim 2, characterized in that: The gripping device includes a gripping shell, a gripping motor, and multiple gripping units. The gripping shell is assembled with the lifting optical shaft and lifting screw of the corresponding lifting module. The gripping motor is mounted on the gripping shell. The gripping motor shaft of the gripping motor is assembled with a gripping drive gear. The gripping drive gear meshes with the gripping internal gear for transmission. The gripping internal gear is located inside the gripping large gear, and gripping external gear is located outside the gripping large gear. The gripping large gear is assembled with the gripping shell. The gripping unit is installed on the outer circumference of the gripping shell. The gripping unit includes a gripping upright plate, a gripping movable plate, and a gripping shaft frame. The gripping upright plate and the gripping shaft frame are both installed on the gripping shell. One end of the gripping upright plate is hinged to one end of the gripping movable plate via a gripping pivot. The gripping movable plate is assembled with one end of the gripping cable. The other end of the gripping cable passes through the cable side shell and is assembled and wound with the gripping reel. The gripping reel is fitted outside the gripping reel shaft. The gripping reel shaft is assembled with the gripping shaft frame. A gripping bevel gear is installed on the gripping reel shaft. The gripping bevel gear meshes with the gripping external gear for transmission. The cable side shell is installed on the gripping upright plate, and the gripping cable can be slidably assembled relative to the cable side shell.

9. The three-phase separation device according to claim 2, characterized in that: The extraction device includes an extraction shell, which is assembled with the lifting optical shaft and lifting screw of the corresponding lifting module. Two extraction units and one detection unit are respectively installed on the extraction shell. The detection unit includes a probe, a capacitive level gauge, a cable, and a detection shaft bracket. The detection shaft bracket is installed on the extraction shell, and the probe is electrically connected to the capacitive level gauge through the cable. The probe is used to obtain the dielectric constant, and the signal is input into the capacitive level gauge for analysis to obtain the oil-water boundary and solid-liquid boundary. The cable passes through and is wound around the cable reel. The cable reel is fitted outside the cable motor shaft, and the cable motor shaft is installed inside the cable motor. The capacitive level gauge, the cable motor, and the cable motor shaft are all mounted on the detection shaft frame. One end of the cable passes through the cable reel and enters the cable motor shaft. Then, it passes out of the cable motor shaft along the axis of the cable motor shaft and is electrically connected to the capacitive level gauge. The extraction unit includes an extraction tube, a counterweight head installed on one end of the extraction tube, and the other end passing through a tube wheel and communicating with the inside of the shaft tube. The tube wheel is fitted outside the shaft tube, the shaft tube is installed on the extraction shaft frame, and the extraction shaft frame is installed on the extraction shell. One end of the shaft tube is assembled with the output shaft of the extraction motor, and the extraction motor is mounted on the extraction shaft frame. The other end of the shaft tube is connected to the manifold cavity, which is located inside the manifold housing. The manifold housing is mounted on the extraction shaft frame. The manifold cavity is connected to one end of the outlet pipe, which is mounted on the manifold housing. The outlet pipe is connected to the inlet of the water pump, and the outlet of the water pump is connected to the pipeline. The two pipelines are respectively connected to the oil channel and water channel of the vertical pipe.

10. A pre-treatment device for kitchen waste, characterized in that: The application has the three-phase separation device according to any one of claims 1-9.

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