A comprehensive food waste treatment and recycling device

Abstract

The invention discloses a comprehensive treatment and recovery device for kitchen waste, comprising a double-layer kitchen waste solid-liquid separation device and a kitchen waste oil-water separation device. The double-layer kitchen waste solid-liquid separation device comprises a sedimentation box, an inclined solid-liquid filtering device and a feeding hopper. One end of the inclined solid-liquid filtering device is inclinedly arranged on the top of the sedimentation box, and the other end is arranged in a cavity. A mixed liquid outlet is arranged outside the cavity. The kitchen waste oil-water separation device comprises a box body and a liquid inlet and a water outlet arranged on both sides of the box body. The liquid inlet is connected with a mixed liquid outlet pipe. The box body has a cavity. An oil inlet chamber, an oil-water steady flow structure, an oil-water separation structure and a drainage chamber are arranged in sequence from the liquid inlet to the water outlet in the cavity. Beneficial effects: the separated solid is dry, the liquid impurity content is low, the oil-water separation efficiency is high, the separation effect is remarkable, the separated water meets the national emission standard, the obtained oil has high purity, the structural arrangement is reasonable, and the box body is suitable for canteens of various restaurants, institutions and schools.

Description

Technical Field

[0001] The invention relates to the field of restaurant and kitchen waste treatment, and in particular to a restaurant and kitchen waste comprehensive treatment and recovery device. Background Art

[0002] At present, the separation process and method of food waste are roughly as follows: collection, sorting, crushing, cooking and separation. Three-phase centrifuges are commonly used for separation. There are a lot of debris in the slurry entering the centrifuge, such as cloth strips, plastics, ropes, wood chips, ceramic pieces or glass fragments, etc., which often cause the centrifuge feed system or drainage system to be blocked, requiring shutdown and flushing. In serious cases, the machine must be disassembled for cleaning, which greatly reduces the separation efficiency of the centrifuge. In addition, due to the large proportion of impurities in the slurry entering the centrifuge, the single-machine processing capacity of the centrifuge is affected, and the centrifuge is seriously worn. In addition, the oil obtained after separation has too many impurities and the solid matter is not dry enough, which increases the difficulty of subsequent oil-water separation.

[0003] Wastewater treatment has always been one of the most difficult problems to solve in today's society. For example, wastewater from the catering industry contains a large amount of organic matter. If it is discharged directly into the urban sewage network, it will not only cause a series of environmental problems, but also cause great treatment pressure on the urban sewage network. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a comprehensive treatment and recovery device for restaurant and kitchen waste. To achieve the above-mentioned purpose, the present invention discloses a comprehensive treatment and recovery device for restaurant and kitchen waste, comprising a double

[0005] Layered kitchen waste solid-liquid separation device and kitchen waste oil-water separation device;

[0006] The double-layer solid-liquid separation device for food waste comprises a sedimentation box, an inclined solid-liquid filtering device, and a feed hopper. The sedimentation box has a cavity and an opening at the top. One end of the inclined solid-liquid filtering device is inclinedly arranged at the upper end of the top opening of the sedimentation box, and the other end is arranged in the cavity.

[0007] The inclined solid-liquid filtering device at least comprises a first layer annular filtering device and a second layer annular filtering device arranged up and down;

[0008] The first layer annular filtering device comprises a first annular conveying structure, a first conveying driving device, a first annular conveying belt is tightly sleeved on the first annular conveying structure, a plurality of large filtering holes are arranged on the first annular conveying belt, and the first conveying driving device drives the first annular conveying structure to rotate and filter;

[0009] The second layer annular filtering device comprises a second annular conveying structure, a second conveying driving device, a second annular conveying belt is tightly sleeved on the second annular conveying structure, a plurality of small filtering holes are arranged on the second annular conveying belt, and the second conveying driving device drives the second annular conveying structure to rotate and filter;

[0010] The feed hopper is relatively arranged at the top of the lower end of the first layer annular filtering device;

[0011] An inclined partition is arranged in the cavity, and the inclined partition is in the same inclination direction as the inclined solid-liquid filtering device, and a mixed liquid outlet is arranged on one side outside the cavity;

[0012] The food waste oil-water separation device comprises a box body and a liquid inlet and a water outlet respectively arranged on both sides of the box body, and the liquid inlet is connected to the mixed liquid outlet pipe;

[0013] The box body has a cavity, and an oil inlet chamber, an oil-water flow stabilizing structure, an oil-water separation structure, and a drainage chamber are sequentially arranged in the cavity from the liquid inlet to the water outlet;

[0014] The oil-water flow stabilizing structure comprises a plurality of flow stabilizing components and a constant temperature device. The plurality of flow stabilizing components are arranged in an array at intervals and fixedly. The plurality of flow stabilizing components are composed of at least two layers of guide plates stacked and fixedly connected. The constant temperature device is fixedly arranged at the bottom of the plurality of flow stabilizing components.

[0015] The oil-water separation structure includes a plurality of separation components, an air flotation separation device, and an oil discharge device. The overall structure and arrangement of the plurality of separation components are consistent with those of the plurality of flow stabilization components. The air flotation separation device is fixedly arranged at the bottom of the plurality of separation components, and the oil discharge device is arranged between the plurality of flow stabilization components and the drainage chamber.

[0016] An oil drainage layer is provided between the flow stabilizing component, the separation component and the top of the cavity, and an oil drainage device is provided at the end of the oil drainage layer;

[0017] The oil inlet chamber, the oil-water stabilizing flow structure, the oil-water separation structure, and the bottom of the drainage chamber are communicated with each other.

[0018] Preferably, the first outer cover plate, the second outer cover plate and the first support rod are fixedly provided on both sides of the first annular conveying structure and the second annular conveying structure, respectively, to achieve conveying safety and fixed setting of the first annular conveying structure and the second annular conveying structure, the first support rod is arranged at the bottom of the cavity, and the lower ends of both sides of the first outer cover plate and the second outer cover plate are fixedly connected to the first support rod through locking screw sleeves.

[0019] Preferably, a first support rod is provided at the bottom of one end of the second-layer annular filter device, the second-layer annular filter device is obliquely arranged on the top of the sedimentation tank through the first support rod, the other end of the second-layer annular filter device is obliquely arranged on the inclined partition plate, and a second and a third support rod are obliquely fixedly arranged between the first-layer annular filter device and the second-layer annular filter device;

[0020] The upper and lower ends of the second and third support rods are respectively fixedly arranged at the bottom of the first support outer cover plate and the top of the second support outer cover plate, so that the first layer annular filter device and the second layer annular filter device are arranged at intervals.

[0021] Preferably, a crushing device is orthogonally arranged on the top of the feed hopper to effectively crush hard objects such as ceramic tableware and bones and convey them to the feed hopper.

[0022] Preferably, the first and second annular filtering devices are provided with a first row hopper and a second row hopper at the discharge ports, respectively. Receiving hoppers are fixedly provided on both sides of the first and second row hoppers, and a solid collecting bucket is provided at the bottom of the receiving hopper.

[0023] Preferably, the diameters of the plurality of large filter holes and the plurality of small filter holes are 5-7 mm and 1.5-2.5 mm respectively.

[0024] Preferably, the guide plate is made of an oleophilic and hydrophobic metal material, the oleophilic and hydrophobic shape is composed of a plurality of inclined arrays of corrugations inclined at 45 degrees, the top angle of the corrugations is 90 degrees, the channels formed by the two adjacent corrugations are 90 degrees, and each layer of the guide plates is stacked in combination.

[0025] Preferably, the corrugations between each layer of guide plates are cross-arranged, and the cross-staggered angle of adjacent corrugations between each layer of guide plates is 90 degrees.

[0026] Preferably, the surface of the guide plate is sprayed with an oleophilic and hydrophobic coating.

[0027] Preferably, the oil inlet chamber, the drainage chamber and the oil-water flow stabilizing structure and the oil-water separation structure are separated by the first and second partitions which are vertically arranged respectively, the bottom of the second partition is communicated with the bottom of the oil-water separation structure, a plurality of through holes are arranged in a local array on the lower end surface of the first partition, the oil drainage device is fixedly arranged on one side of the second partition, a third partition is vertically arranged between the oil-water flow stabilizing structure and the oil-water separation structure, the third partition is spaced apart from the upper and lower ends of the cavity, and one side of the plurality of flow stabilizing components and the plurality of separation components are respectively fixedly arranged on both sides of the third partition.

[0028] Compared with the prior art, the beneficial effects of the present invention are: the solids separated by the present invention are drier, the liquid impurity content is lower, the oil-water separation efficiency is high, the separation effect is significant, the separated water can meet the relevant national emission standards, the separated oil has high purity, reasonable structural layout, and small external dimensions, and is suitable for canteens of restaurants of all sizes, government agencies, and schools. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the first-layer annular filtering device of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the second-layer annular filtering device of the present invention;

[0033] Figure 5 It is a three-dimensional schematic diagram of the structure of the food waste oil-water separation device of the present invention;

[0034] Figure 6 It is an isometric schematic diagram of the overall structure of the first partition of the food waste oil-water separation device of the present invention;

[0035] Figure 7 This is a front view of the guide plate of the food waste oil-water separation device of the present invention;

[0036] Figure 8 It is a top view of the guide plate of the food waste oil-water separation device of the present invention;

[0037] Fig. 9 for Figure 8 A magnified schematic diagram of part A;

[0038] Fig.10 A front view of the flow direction of the oil-water mixture in the two-layer guide plate of the present invention;

[0039] Fig.11 for Figure 1 Enlarged schematic diagram of part B. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following will be combined with Figure 1-Figure 3 The present invention is further described in detail with reference to the accompanying drawings.

[0041] Reference Figure 1 As shown, a comprehensive processing and recovery device for food waste is characterized by comprising a double-layer food waste solid-liquid separation device 1A and a food waste oil-water separation device 5A;

[0042] The double-layer solid-liquid separation device 1A for food waste comprises a sedimentation tank 1, an inclined solid-liquid filtering device 2, and a feed hopper 3. The sedimentation tank 1 has a top-opening cavity 11, one end of the inclined solid-liquid filtering device 2 is inclinedly arranged at the top of the sedimentation tank 1, and the other end is arranged in the cavity 11;

[0043] An inclined partition 111 is provided at the bottom of the cavity 11. The inclined partition 111 is inclined in the same direction as the inclined solid-liquid filtering device 2. The lower end of the inclined partition 111 forms a sedimentation chamber 11-1 in the cavity 11 for collecting solid microparticles.

[0044] Reference Figure 1-3 As shown, the inclined solid-liquid filtering device 2 at least includes a first layer annular filtering device 23 and a second layer annular filtering device 24 which are arranged up and down.

[0045] Reference Figure 1 , Figure 3 As shown, the first-layer annular filtering device 23 includes a first annular conveying structure, a first conveying driving device 232, a first annular conveying structure having a first annular conveying belt 233 tightly sleeved thereon, a plurality of large filter holes 233-1 arranged on the first annular conveying belt 233, and the first conveying driving device 232 drives the first annular conveying structure 231 to rotate for solid-liquid separation filtration.

[0046] Reference Figure 3 As shown, the first annular conveying structure includes an active roller 231-2 and a driven roller 231-3, and the first annular conveying belt 233 is annularly tightly sleeved on the surface of the active roller 231-2 and the driven roller 231-3. The active roller 231-2 and the driven roller 231-2 are driven by a chain structure 231-3, and the first annular conveying driving device 232 drives the active roller 231-2 to rotate and drives the first annular conveying belt to perform annular conveying motion.

[0047] Reference Figure 1-Figure 3 As shown, for the purpose of conveying safety and fixation of the first conveying structure, a pair of first supporting outer cover plates 234 are fixedly arranged on both sides of the active roller 231-2 and the driven roller 231-3, and the higher end of the first layer annular filtering device 23 has a first discharge hopper 235, which is fixedly arranged on the bracket or the bottom of the first supporting outer cover plate 234.

[0048] A feed hopper 3 is disposed at the top of the lower end of the first annular filter conveyor belt 233 , and the feed hopper 3 is fixedly disposed on the top of the first supporting outer cover plate 234 or fixedly disposed on the supporting rod 20 via a locking nut.

[0049] The feed hopper 3 has three inclined guide surfaces 236 - 1 , which are inclined inward from the top to the discharge port of the feed hopper 3 , so that the food waste can fall accurately onto the first-layer annular filter device 23 .

[0050] There is also a crushing device 18 on the top of the feed hopper 3. The crushing device 18 includes a crushing drive device 181 and a frame 182. The crushing device 18 is arranged orthogonally to the feed hopper 3 through the frame 182. The solid and liquid of the food waste enter from the feed port 184 on the top of the crushing device 18. The crushing drive device 181 drives the crushing device 18 to effectively crush hard objects such as ceramic tableware and bones, and transport them to the feed hopper 3. The discharge port 183 of the crushing device 18 is located inside the top of the feed hopper 3.

[0051] Preferably, the pulverizing device in this embodiment is a shearing type pulverizer, and the pulverizing driving device is a motor and a reducer.

[0052] Preferably, the diameter of the plurality of large filter holes is 5-7 mm.

[0053] Reference Figure 4 As shown, the second-layer annular filtering device 24 includes a second annular conveying structure 241, a second conveying driving device 242, a second annular conveying structure 241 tightly sleeved with a second annular conveying belt 243, a plurality of small filtering holes 243-1 arranged on the second annular conveying belt 243, and the second conveying driving device drives the second annular conveying structure to rotate for filtering.

[0054] Preferably, the diameter of the several small filter holes is 1.5-2.5 mm.

[0055] Reference Figure 2 , Figure 4 As shown, the overall structural configuration of the second conveying driving device 242 and the second annular conveying structure 241 is consistent with that of the first-layer annular filtering device 23 .

[0056] A first support rod 243-1 is provided at the bottom of one end of the second supporting outer cover plate 243 of the second annular filter device 24. The second annular filter device 24 is tilted on the top of the sedimentation box 1 through the first support rod 243-1. The other end of the second annular filter device 24 is tilted at an interval on the second inclined partition plate 111-2.

[0057] Reference Figure 1 , Figure 4 As shown, compared with the first annular filter conveyor belt 233, the surface of the second annular filter conveyor belt 243 is provided with a plurality of scrapers 243-2. ​​When the second annular filter conveyor belt 243 is working, the solid tiny particles concentrated on the second inclined partition 111-2 and the bottom of the sedimentation chamber 11-1 can be transported to the second annular filter conveyor belt through the plurality of scrapers 243-2.

[0058] Reference Figure 1-2 As shown, the second and third support rods 234 - 1 and 234 - 2 are fixedly arranged obliquely between the first annular filter device 23 and the second annular filter device 24 .

[0059] The upper and lower ends of the second and third support rods 234-1 and 234-2 are respectively tilted and fixedly arranged at the bottom of the first support outer cover plate 234 and the top of the second support outer cover plate 243, so that the first layer annular filter device 23 and the second layer annular filter device 2 are arranged at intervals, forming a step-by-step filtration of solid matter in food waste, and the first layer annular filter device 23 and the second layer annular filter device 24 are tilted in the same direction.

[0060] In order to make the overall structure of the inclined solid-liquid filtering device 2 more stable, the first and second annular filtering devices 23 and 24 also have a first support rod 20 on both sides of the lower end. The first support rod 20 is fixedly arranged at the bottom of the cavity 11, and the first support outer cover plate 234 and the second support outer cover plate 243 are fixedly connected to the first support rod 20 on both sides through locking screw sleeves 21.

[0061] Reference Figure 2 As shown, receiving hoppers 10 are fixedly arranged on both sides of the first and second row hoppers 235 and 244 near the discharge port, and a solid collecting bucket 5 is correspondingly arranged at the bottom of the receiving hopper 10 to realize the unified transportation of the solids discharged from the first and second row hoppers 235 and 244 to the solid collecting bucket 5.

[0062] In this embodiment, the first conveying driving device and the second conveying driving device are servo motors respectively.

[0063] The inclined partition 111 in the cavity 11 concentrates the solid sediment in the inclined direction so that the second-layer annular filter device 24 can transport it to the solid collection bucket 5. Through the circulation transport of the second-layer annular filter device 24, the tiny particles concentrated in the inclined direction are transported to the solid collection bucket.

[0064] Reference Figure 1 As shown, the inclined baffle 111 is arranged in two sections with staggered gaps, including a first inclined baffle 111-1 and a second inclined baffle 111-2. The first inclined baffle 111-1 is fixedly arranged on the inner wall of the cavity 11, and the higher end of the first inclined baffle 111-1 is flush with the top of the sedimentation box 1, and the lower end is in the cavity 11, so that the oil or solid tiny particles dripped from the higher end of the inclined solid-liquid filtration device 2 can fall into the second inclined baffle 111-2 along the inclination direction of the first inclined baffle 111-1.

[0065] A vertical support plate 111-3 is provided on one side of the second inclined baffle 111-2, and the higher end of the second inclined baffle 111-2 is arranged close to the top of the vertical support plate 111-3 to prevent solid tiny particles from flowing through the vertical support plate 111-3 with the oil. The second inclined baffle 111-2 is fixedly arranged in the cavity 11 through the vertical support plate 111-3, and the lower end of the second inclined baffle 111-2 is arranged at the bottom of the cavity 11, and the top of the vertical support plate 111-3 is relatively spaced and arranged in the bottom of the lower end of the first inclined baffle 111-1, so that the oil or solid tiny particles on the first inclined baffle 111-1 can flow to the second inclined baffle 111-2 along the inclined direction.

[0066] The two sections of the inclined baffle 111 are staggered and spaced so that a clarification chamber 11-2 is provided in the cavity 11. The oil can flow into the clarification chamber 11-2 through the space between the inclined baffles 111, and the solid particles will be concentrated in the sedimentation chamber 11-1 due to the second inclined baffle 111-2, which can further prevent fine particle residues from being brought into the oil-water separation system by the water pump. The clarification chamber 11-2 is arranged opposite to the sedimentation chamber 11-1.

[0067] Reference Figure 2 As shown, the inclined solid-liquid filtering device 2 adopts a double-layer conveyor belt structure with filtering holes, and the aperture of the filtering holes decreases layer by layer, so that the tiny particles of food waste are filtered and transported to the solid collection bucket, and the impurity content of the separated liquid is lower. A mixed liquid outlet 12 is arranged outside the clarification chamber 11-2, and a sewage outlet 13 is arranged at the bottom of the clarification chamber 11-2. The mixed liquid outlet 12 can be connected to an external water pipe and a water pump to transport the mixed oil liquid filtered in the chamber 11 to the food waste oil-water separation device 4.

[0068] Reference Figure 2 As shown, a high-pressure cleaning device 4 is also provided on the top of the sedimentation tank 1. The high-pressure cleaning device 4 includes a support rod 41, a first high-pressure nozzle 42, a second high-pressure nozzle 43, a high-pressure water pump 44, and an electrical control box 45. The support rod 41 is fixedly arranged on the top of the sedimentation tank 1 and is close to the higher end of the inclined solid-liquid filtering device 2. The first and second high-pressure nozzles 42 and 43 are respectively fixedly arranged on the support rod 41 and are laterally opposite to the first-layer annular filtering device and the second-layer annular filtering device 23 and 24 respectively. The high-pressure water pump 44 supplies water to the first and second high-pressure nozzles 42 and 43 and is electrically connected to the electrical control box, so as to realize a timed and quantitative cleaning mode.

[0069] When the cleaning mode is started, the first-layer annular filter device 23 and the second-layer annular filter device 24 are circulated and rolled, and the high-pressure cleaning device 6 is started, so as to clean the first annular conveyor belt 233 and the second annular conveyor belt 243. The inclined setting of the first-layer annular filter device and the second-layer annular filter device 23 and 24 is conducive to the rapid discharge of sewage on the surface of the conveyor belt into the cavity 11 during cleaning, and the sewage outlet 13 is opened to discharge the sewage out of the box.

[0070] Reference Figure 1 As shown, the food waste oil-water separation device 5A comprises a housing 5 and a liquid inlet 51 and a water outlet 52 respectively arranged on both sides of the housing 5, and the liquid inlet 51 is connected to the mixed liquid outlet 12 of the double-layer food waste solid-liquid separation device 1A.

[0071] Reference Figure 1 , Figure 5 As shown, the box body 5 has a cavity 53, and an oil inlet chamber 6, an oil-water flow stabilizing structure 7, an oil-water separation structure 8, and a drainage chamber 9 are sequentially arranged in the cavity 53 from the liquid inlet 51 to the water outlet 52.

[0072] An oil drainage layer 120 is provided between the oil-water flow stabilizing structure 7 , the oil-water separation structure 8 and the top of the cavity 53 .

[0073] Reference Figure 1 As shown, the oil inlet chamber 6 and the oil-water flow stabilizing structure 7 are separated by a vertically arranged first partition 130, and the oil and water in the drainage chamber 9 and the separation structure 8 are separated by a vertically arranged second partition 140. The bottom of the second partition 140 is connected to the oil-water separation structure 8 and the drainage chamber 9, and the oil drainage device 83 is fixedly arranged on one side of the second partition 140, located at the end of the oil drainage layer 120.

[0074] Reference Figure 6 As shown, a local array of through holes 130-1 is provided on the lower surface of the first partition 130. The oil-water mixture entering the oil inlet chamber 6 from the liquid inlet 51 will form an unstable flow speed and direction due to pressure reasons. The through holes 130-1 can make the oil-water mixture in the oil inlet chamber 6 flow to the oil-water steady flow structure 7 at a relatively stable flow speed and direction, creating good conditions for oil-water separation. The through holes 130-1 also have a filtering effect to prevent solid matter in the oil-water mixture from flowing into the oil-water steady flow structure 7 and causing blockage.

[0075] Reference Figure 1 As shown, the oil-water flow stabilizing structure 7 includes a plurality of flow stabilizing components 71 and a constant temperature device 72 . The plurality of flow stabilizing components 71 are arranged side by side longitudinally. The plurality of flow stabilizing components 71 are composed of at least two layers of guide plates 711 which are stacked and fixedly connected. The constant temperature device 72 is fixedly arranged at the bottom of the plurality of flow stabilizing components 71 .

[0076] In this embodiment, the thermostat 72 is a heating tube, which is electrically connected to an external temperature control circuit. The thermostat 72 is preferably 5. The thermostat 72 can control the oil-water mixture flowing from the oil inlet chamber 6 into the oil-water steady flow structure 7 within a certain temperature range, effectively preventing the oil-water mixture from emulsifying and increasing the difficulty of subsequent oil-water separation. Usually, within the temperature range of the boiling point of water (the boiling point of water under a standard atmospheric pressure is 100°C), an increase in temperature will increase the density difference between the oil phase and the water phase and reduce the viscosity of the water, which is beneficial to oil-water separation. In this embodiment, the temperature is controlled at 30°C-40°C while comprehensively considering the maximization of economic benefits.

[0077] Reference Figure 1 As shown, the oil-water separation structure 8 includes a plurality of separation components 81, an air flotation separation device 82, and an oil discharge device 83. The overall structure of the plurality of separation components 81 is consistent with the plurality of flow stabilization components 71. The air flotation separation device 82 is relatively arranged at the bottom of the plurality of separation components 81, and the oil discharge device 83 is arranged between the plurality of separation components 81 and the drainage chamber 9.

[0078] Reference Figure 1 As shown, the air flotation separation device 82 includes a bubble generating device 821 and an air pump 822. The bubble generating device 821 and the air pump 822 are connected by a pipeline. The bubble generating device 821 is fixedly arranged at the bottom of the separation component 81, and the air pump 822 is arranged outside the box 5. The bubble generator generates bubbles to float. Since the density of oil is lower than that of water, the bubbles will combine with the oil with a closer density and gradually move upward to the separation component 81, thereby accelerating the separation of oil and water.

[0079] When the oil-water mixture passes through the oil-water stabilizing flow structure 7 and the oil-water separation structure 8 , the oil with low density floats to the oil drainage layer 120 and flows into the oil drainage device 83 due to the effects of the oil-water stabilizing flow structure 7 and the oil-water separation structure 8 .

[0080] Reference Figure 1 , Figure 7 , Figure 8 , Fig.10 As shown, the guide plates 711 of several flow stabilizing components 71 are oleophilic and hydrophobic metal plates, which are composed of several inclined arrays of corrugations 711-1 inclined at 45 degrees, each corrugation 711-1 has a top angle of 90 degrees, and the channel 711-2 formed by two adjacent corrugations 711-1 is 90 degrees. Each layer of guide plates 711 is stacked, and the corrugations 511-1 between each layer of guide plates 711 are rotated 90 degrees. In this embodiment, two layers of guide plates 711 are arranged, and the two layers of guide plates 711 are stacked by welding. The corrugations 711-1 between any two adjacent layers of guide plates 711 are cross-arranged, and the cross-staggered angle of the adjacent corrugations 711-1 between the guide plates 711 is 90 degrees. Several separation components 81 are consistent with several flow stabilizing components 71.

[0081] Preferably, the guide plate 711 in this embodiment is made of 304 stainless steel.

[0082] Reference Figure 8 , Fig. 9 , Fig.10 As shown, the surface of the guide plate 711 is sprayed with an oleophilic and hydrophobic coating 711-3, which is nano liquid glass. The nano liquid glass is in liquid state before spraying, and dries and solidifies into a film attached to the surface of the guide plate 711 within a few minutes after spraying. The film layer is 5-8um thick, and its surface particle size is less than 20nm.

[0083] The plurality of flow stabilizing components 71 are of a stacked structure and the channels 711-2 formed therefrom can relatively stabilize the flow velocity and flow direction of the oil-water mixture. The nano-liquid glass sprayed on the surface of the guide plate 711 serves as an oleophilic and hydrophobic coating 711-3. It has good heat-insulating properties and can better prevent the oil-water mixture from directly contacting the surface of the guide plate 711 to cause heat loss, thereby reducing energy consumption. It can reduce the friction between the flowing oil-water mixture and the flow stabilizing component 71, and has a better drainage effect on the oil-water mixture, creating good conditions for subsequent oil-water separation.

[0084] When the oil-water mixture enters the oil-water stabilizing flow structure 71, the plurality of stabilizing flow 71 components have the characteristics of lipophilicity and hydrophobicity, and can separate a part of the oil in the oil-water mixture and float it to the oil drainage layer 120, while the remaining oil-water mixture flows along the channel 711-2 formed by the plurality of stabilizing flow 71 components to the oil-water separation structure 8 for further separation.

[0085] In the oil-water separation structure 8, the oil-water mixture undergoes adsorption, collision, fusion and other processes with the oil-water separation component 81 through its own gravity, flow action and the action of the air flotation separation device 82, so that the dispersed phase droplets grow into large droplets, and the large droplets are removed from the surface of the separation component 81, so that the light phase oil is separated and floats on the oil drainage layer 120, and the heavy phase water flows from the bottom to the drainage chamber 9 through the channel formed by the separation component 81. The nano liquid glass is used as an oleophilic and hydrophobic coating, and its surface particle size can be less than 20nm (the surface is smoother), so that the friction between the oil-water mixture and the surface of the separation component 81 is smaller, and its hydrophobic effect is more significant. The oil-water separation structure of the present invention cooperates with the air flotation separation device to further accelerate the separation effect of the oil-water mixture. Therefore, the practical oil-water separation system is more energy-saving, has a higher separation efficiency, and a more significant separation effect. The separated water can meet the relevant national emission standards, and the separated oil has a high purity.

[0086] Reference Figure 1 , Fig.11As shown, the oil discharge device 83 includes a longitudinally arranged oil discharge chamber 83-1 and an oil discharge port 83-2 arranged at the bottom of the oil discharge chamber 83-1. A downwardly inclined guide strip 83-3 is arranged on the top of one side of the oil discharge chamber 83-1. The bottom of the guide strip 83-3 is arranged in contact with the top of the partition 160 on one side of the separation component, and the oil in the flow stabilizing component 71 and the oil discharge layer 120 on the top of the separation component 81 can be drained into the oil discharge chamber 83-1. The guide strip 83-3 can prevent the oil in the oil discharge layer 120 from flowing downward to the outside of the separation component 81. The oil discharge port 83-2 is connected by a pipe to transport the oil in the oil discharge chamber 83-1 to the collection barrel outside the cavity.

[0087] The water obtained after the oil-water mixture passes through the separation process flows into the drainage chamber 9. The drainage port 52 is connected to the drainage chamber and the water in the drainage chamber 9 is pumped out to the outside by an external water pump for collection.

[0088] Reference Figure 1 As shown, a third partition plate 150 is vertically arranged between the oil-water flow stabilizing structure 7 and the oil-water separation structure 8, and the third partition plate 150 is longitudinally fixedly arranged in the middle of the cavity, and one side of a plurality of flow stabilizing components 71 and a plurality of separation components 81 are respectively fixedly arranged on both sides of the third partition plate 150, and a support partition plate 160 is longitudinally arranged on the other side of a plurality of flow stabilizing components 71 and a plurality of separation components 81, and the upper and lower ends of the support partition plate 160 are respectively aligned with the third partition plate.

[0089] Reference Figure 1 As shown, the bottom of the flow stabilizing component 71 is arranged close to the bottom of the cavity 53, and the two ends between the bottom of the flow stabilizing component 71 and the bottom of the cavity 53 are connected by a pair of longitudinally arranged support frames 71-4, which is conducive to further slowing down the flow speed of the oil-water mixture and changing the flow direction.

[0090] Preferably, the plurality of flow stabilizing components 71 and the plurality of separation components 81 are respectively arranged in 10 groups.

[0091] A sewage outlet 160 is provided on the outer side of the bottom of the oil-water separation structure, and the sewage outlet 160 can be connected to a water pump to discharge sewage in the cavity 53 .

[0092] Reference Figure 1 As shown, a high-pressure cleaning device is provided on one side outside the box body 5, and the high-pressure cleaning device also includes a plurality of high-pressure water nozzles 170, a high-pressure water pump 171, and an electronic control circuit 172. The plurality of high-pressure water nozzles 170 are fixedly arranged at the top of the cavity 53, respectively, and are respectively opposite to the oil inlet chamber 6, the oil-water flow stabilizing structure 7, the oil-water separation structure 8, and the drainage chamber 9. The high-pressure water pump 171 supplies water to the plurality of high-pressure nozzles 170, and the plurality of high-pressure nozzles 170 are connected to the external high-pressure water pump 171 through a pipeline. The high-pressure water pump 171 is electrically connected to the electronic control circuit 172. When the oil-water separation process is completed, the cavity 53 is cleaned regularly and discharged from the drain outlet 160.

[0093] Of course, the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any modifications made according to the spirit of the main technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A comprehensive treatment and recovery device for food waste, characterized in that: It includes a double-layer kitchen waste solid-liquid separation device and a kitchen waste oil-water separation device; The double-layer solid-liquid separation device for food waste comprises a sedimentation box, an inclined solid-liquid filtering device, and a feed hopper. The sedimentation box has a cavity and an opening at the top. One end of the inclined solid-liquid filtering device is inclinedly arranged at the upper end of the top opening of the sedimentation box, and the other end is arranged in the cavity. The inclined solid-liquid filtering device at least comprises a first layer annular filtering device and a second layer annular filtering device arranged up and down; The first layer annular filtering device comprises a first annular conveying structure, a first conveying driving device, a first annular conveying belt is tightly sleeved on the first annular conveying structure, a plurality of large filtering holes are arranged on the first annular conveying belt, and the first conveying driving device drives the first annular conveying structure to rotate and filter; The second layer annular filtering device comprises a second annular conveying structure, a second conveying driving device, a second annular conveying belt is tightly sleeved on the second annular conveying structure, and a plurality of small filtering holes are arranged on the second annular conveying belt; The feed hopper is relatively arranged at the top of the lower end of the first layer annular filtering device; An inclined partition is arranged in the cavity, and the inclined partition is in the same inclination direction as the inclined solid-liquid filtering device, and a mixed liquid outlet is arranged on one side outside the cavity; The food waste oil-water separation device comprises a box body and a liquid inlet and a water outlet respectively arranged on both sides of the box body, and the liquid inlet is connected to the mixed liquid outlet pipe; The box body has a cavity, and an oil inlet chamber, an oil-water flow stabilizing structure, an oil-water separation structure, and a drainage chamber are sequentially arranged in the cavity from the liquid inlet to the water outlet; The oil-water flow stabilizing structure comprises a plurality of flow stabilizing components and a constant temperature device. The plurality of flow stabilizing components are arranged in an array at intervals and fixedly. The plurality of flow stabilizing components are composed of at least two layers of guide plates stacked and fixedly connected. The constant temperature device is fixedly arranged at the bottom of the plurality of flow stabilizing components. The oil-water separation structure includes a plurality of separation components, an air flotation separation device, and an oil discharge device. The overall structure and arrangement of the plurality of separation components are consistent with those of the plurality of flow stabilization components. The air flotation separation device is fixedly arranged at the bottom of the plurality of separation components, and the oil discharge device is arranged between the plurality of flow stabilization components and the drainage chamber. An oil drainage layer is provided between the flow stabilizing component, the separation component and the top of the cavity, and an oil drainage device is provided at the end of the oil drainage layer; The oil inlet chamber, the oil-water stabilizing flow structure, the oil-water separation structure, and the bottom of the drainage chamber are connected; The first outer cover plate, the second outer cover plate and the first support rod are fixedly arranged on both sides of the first annular conveying structure and the second annular conveying structure, respectively, to achieve conveying safety and fixed arrangement of the first annular conveying structure and the second annular conveying structure, the first support rod is arranged at the bottom of the cavity, and the lower ends of both sides of the first outer cover plate and the second outer cover plate are fixedly connected to the first support rod through locking screw sleeves; The oil inlet chamber, the drainage chamber, the oil-water flow stabilizing structure, and the oil-water separation structure are separated by the first and second partitions arranged vertically, respectively. The bottom of the second partition is communicated with the bottom of the oil-water separation structure. A plurality of through holes are arranged in a local array on the lower end surface of the first partition. The oil drainage device is fixedly arranged on one side of the second partition. A third partition is vertically arranged between the oil-water flow stabilizing structure and the oil-water separation structure. The third partition is spaced apart from the upper and lower ends of the cavity. One side of the plurality of flow stabilizing components and the plurality of separation components are fixedly arranged on both sides of the third partition, respectively.

2. The comprehensive processing and recovery device for food and kitchen waste according to claim 1 is characterized in that: A first support rod is provided at the bottom of one end of the second-layer annular filter device, and the second-layer annular filter device is obliquely arranged on the top of the sedimentation box through the first support rod. The other end of the second-layer annular filter device is obliquely arranged on the inclined partition plate, and a second and a third support rod are obliquely fixedly arranged between the first-layer annular filter device and the second-layer annular filter device; A first supporting outer cover plate is arranged on the outer side of the first annular filter device, and a second supporting outer cover plate is arranged on the outer side of the second annular filter device. The upper and lower ends of the second and third supporting rods are respectively tilted and fixedly arranged on the bottom of the first supporting outer cover plate and the top of the second supporting outer cover plate, so that the first annular filter device and the second annular filter device are arranged at intervals.

3. The comprehensive processing and recovery device for food and kitchen waste according to claim 1 is characterized in that: A crushing device is also orthogonally arranged on the top of the feed hopper to effectively crush ceramic tableware and hard objects such as bones and convey them to the feed hopper.

4. The comprehensive processing and recovery device for food and kitchen waste according to claim 1, characterized in that: The first and second annular filter devices are provided with a first row hopper and a second row hopper at the discharge ports, respectively. Receiving hoppers are fixedly provided on both sides of the first and second row hoppers, and a solid matter collecting bucket is provided at the bottom of the receiving hopper.

5. The comprehensive processing and recycling device for food and kitchen waste according to claim 1, characterized in that: The apertures of the plurality of large filter holes and the plurality of small filter holes are 5-7 mm and 1.5-2.5 mm respectively.

6. The comprehensive processing and recovery device for food and kitchen waste according to claim 1, characterized in that: The guide plate is made of an oleophilic and hydrophobic metal material, which is composed of a plurality of 45-degree inclined corrugated arrays, the corrugated top angle is 90 degrees, and the channels formed by two adjacent corrugations are 90 degrees, and each layer of guide plates is stacked and combined.

7. The comprehensive processing and recovery device for food and kitchen waste according to claim 6, characterized in that: The corrugations between each layer of guide plates are cross-arranged, and the cross-staggered angle of adjacent corrugations between each layer of guide plates is 90 degrees.

8. A comprehensive treatment and recovery device for food and kitchen waste according to any one of claims 6-7, characterized in that: The surface of the guide plate is sprayed with an oleophilic and hydrophobic coating.

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