A rapid oil-water separation device for kitchen waste liquid garbage and separation method thereof

Abstract

The present invention relates to the technical field of kitchen waste treatment, and in particular to a kitchen waste liquid waste rapid oil-water separation device and a separation method thereof. It comprises an outer cylinder, wherein a pretreatment unit is arranged in the outer cylinder, and a liquid oil solidification unit is connected to the bottom of the pretreatment unit; a plurality of groups of separation units are distributed in a circular array around the outer cylinder; the separation unit comprises a top plate, and a servo motor is arranged on the top plate; a solid oil storage tank is arranged on one side of the top plate, and a vacuum pump is arranged on the output end of the solid oil storage tank, and a separation cylinder is arranged directly below the top plate. The present invention realizes rapid separation of oil and water, and has a short waiting time and high smoothness throughout the process compared with the traditional sedimentation method or flocculant method. And the separated solid oil is cleaned by the oil suction mechanism and the shaking brush mechanism, realizing the function of automatic collection of oil and water separation, which not only improves the efficiency of oil-water separation work, but also reduces the labor intensity of later cleaning work.

Description

Technical Field

[0001] The invention belongs to the technical field of kitchen waste treatment, and in particular relates to a kitchen waste liquid waste rapid oil-water separation device and a separation method thereof. Background Art

[0002] Kitchen liquid waste usually contains a large amount of liquid oil. In order to reduce environmental pollution and improve treatment effect, it is necessary to use an oil-water separation device to separate the liquid oil in the kitchen liquid waste.

[0003] After searching, the patent document with the publication number of CN219128414U and the publication date of June 6, 2023, entitled "An oil-water separation device for kitchen waste" is cited. It includes a garbage collection device body, the top of which is hinged with a sealing cover, the bottom of the inner cavity of the garbage collection device body is movably connected with a collection box, the front of the collection box extends to the outside of the garbage collection device body, and the upper end of the inner cavity of the garbage collection device body and the top of the collection box are movably connected with a filter box. The above embodiment has the effect of facilitating the cleaning of the filter box, and a filter net is provided to filter sewage and oil stains in the garbage.

[0004] However, the above embodiment still has the following defects:

[0005] Oil stains can only be filtered at room temperature. When the temperature is high, the oil stains are in liquid state and it is difficult to filter directly through the filter, resulting in a decrease in the oil-water separation effect. Summary of the invention

[0006] In view of the above problems, the present invention provides a rapid oil-water separation device for liquid kitchen waste, comprising an outer cylinder, wherein a pretreatment unit is arranged inside the outer cylinder, and a liquid oil solidification unit is connected to the bottom of the pretreatment unit; a plurality of groups of separation units are distributed in a circular array around the outer cylinder;

[0007] The separation unit comprises a top plate, on which a servo motor is arranged; a solid oil storage tank is arranged on one side of the top plate, a vacuum pump is arranged on the output end of the solid oil storage tank, a separation cylinder is arranged directly below the top plate, a liquid inlet is opened on the separation cylinder, and the liquid inlet is connected to the semi-finished product liquid delivery pipe; a spiral conveying blade is arranged in the separation cylinder, the top of the spiral conveying blade extends to the outside of the separation cylinder, and is transmission-connected to the output end of the servo motor; and a water filter is arranged on the spiral conveying blade;

[0008] A filter cleaning unit is provided on the water filter net, and the filter cleaning unit includes a shaking brush mechanism and an oil suction mechanism; the oil suction mechanism and the shaking brush mechanism are both located above the separation cylinder, and the bottom of the oil suction mechanism and the top of the shaking brush mechanism are respectively slidably fitted on the upper surface and the lower surface of the spiral conveying blade; the output end of the oil suction mechanism is connected to the vacuum pump.

[0009] Furthermore, a feeding funnel is provided at the center of the top of the outer cylinder; the output end of the feeding funnel extends into the cavity of the outer cylinder and is connected with the input end of the pretreatment unit;

[0010] A heat exchanger is provided on one side of the outer cylinder, and the output end of the heat exchanger is communicated with the input end of the pre-processing unit.

[0011] Furthermore, the pretreatment unit includes a first annular tube; the first annular tube is located inside the outer cylinder, and the central axis of the first annular tube coincides with the outer cylinder and the loading funnel; a second annular tube is provided outside the first annular tube, and a third annular tube is provided outside the second annular tube, and the central axes of the first annular tube, the second annular tube and the third annular tube coincide and have the same height.

[0012] Furthermore, a first gap is provided between the first annular tube and the second annular tube, a second gap is provided between the second annular tube and the third annular tube, and the first gap and the second gap have the same width; an internal circulation tube is connected between the first annular tube, the second annular tube and the third annular tube; an intermediate port is opened on the third annular tube, and the intermediate port is connected to the output end of the heat exchanger.

[0013] Furthermore, a plurality of groups of refrigerant interfaces are distributed in a circular array at the bottom of the first annular tube, the second annular tube and the third annular tube; a group of heat exchange tubes are connected to the bottom of each group of refrigerant interfaces in a vertical direction; a plurality of groups of raw material water outlet pipes are distributed in a circular array directly above the first gap and the second gap, and the input end of the raw material water outlet pipe is connected to the output end of the feeding funnel.

[0014] Furthermore, the liquid oil solidification unit includes a first inner cylinder; the first inner cylinder is located directly below the first annular tube, and the central axis of the first inner cylinder coincides with the central axis of the first annular tube; a second inner cylinder is provided outside the first inner cylinder, and a third inner cylinder is provided outside the second inner cylinder, and the central axes of the first inner cylinder, the second inner cylinder and the third inner cylinder all coincide.

[0015] Furthermore, a plurality of groups of exchange tube slots are distributed in a circular array on the top of the first inner tube, the second inner tube and the third inner tube, the number of the exchange tube slots is the same as the number of heat exchange tubes, and each group of heat exchange tubes is plugged into a corresponding group of exchange tube slots; a group of raw material cooling grooves is provided between the first inner tube and the second inner tube, and between the second inner tube and the third inner tube.

[0016] Furthermore, each group of the raw material water outlet pipes is located directly above a corresponding group of raw material cooling troughs; a material discharge funnel is provided at the bottom of the third inner cylinder, and the bottom of each group of the raw material cooling troughs is connected to the material discharge funnel.

[0017] Furthermore, the oil suction mechanism includes a suction pipe, which is connected to a corresponding group of horizontal connecting rods, and the output end of the suction pipe is connected to the input end of the solid oil suction pipe; the input end of the suction pipe is connected to an oil suction head, and an oil suction port is opened on the side wall of the oil suction head, and a shovel plate is installed at the bottom edge of the oil suction port opening; the bottom of the shovel plate is slidably fitted with the upper surface of the spiral conveying blade.

[0018] A separation method of a kitchen waste liquid waste rapid oil-water separation device, the separation method comprising:

[0019] The liquid waste is cooled by the liquid oil solidification unit and the pretreatment unit, so that the liquid oil in the liquid waste is cooled and solidified to obtain solid-liquid mixed waste;

[0020] Discharge the solid-liquid mixed garbage into each group of separation cylinders respectively, start the servo motor, and drive the spiral conveying blade to rotate through the servo motor;

[0021] The spiral conveying blades transport the solid oil in the separation cylinder vertically upwards while rotating, while the remaining liquid waste will fall back into the separation cylinder through the water filter and finally be discharged separately;

[0022] The shaking brush mechanism slides and fits with the water filter net, and beats the solid oil adsorbed on the surface of the water filter net to separate it from the water filter net;

[0023] Start the vacuum pump to provide suction for the oil suction mechanism, and then the solid oil is sucked out through the oil suction mechanism.

[0024] The beneficial effects of the present invention are:

[0025] 1. First, the liquid waste is cooled by the liquid oil solidification unit, so that the liquid oil in the liquid waste is solidified and discharged into the separation cylinder, and then the solid oil is taken out by the spiral conveying blade, while other liquid waste will fall back into the separation cylinder from the gap of the water filter. Thus, the oil and water are separated quickly, and the waiting time is short compared with the traditional sedimentation method or flocculant method, and the whole process is smooth. And the separated solid oil is cleaned by the oil suction mechanism and the shaking brush mechanism, realizing the function of automatic collection of oil and water, which not only improves the efficiency of oil and water separation, but also reduces the labor intensity of later cleaning work.

[0026] 2. Since the first latex rod and the second latex rod have different heights and are cross-arranged, the first latex rod can penetrate deeper into the gap of the water filter net when in contact with the water filter net, thereby increasing the contact area and strength, thereby avoiding solid oil adsorbed on the water filter net and unable to be cleaned, and thereby improving the effect of the shaking brush mechanism in cleaning solid oil.

[0027] 3. The space for cooling liquid waste is divided into several groups of raw material cooling tanks by the first inner tube, the second inner tube and the third inner tube, and the first inner tube, the second inner tube and the third inner tube are cooled by each group of heat exchange tubes. At the same time, the liquid waste is evenly distributed to each group of raw material cooling tanks by using each group of raw material outlet pipes, so as to increase the contact area between the liquid waste and the cooling source, so that the liquid waste can be cooled separately, which not only speeds up the cooling speed, but also avoids the occurrence of incomplete cooling. In this way, the cooling effect is improved.

[0028] 4. The solid oil is taken out by the spiral conveying blades, while other liquid waste will fall back into the separation cylinder through the gaps in the water filter. This allows for rapid separation of oil and water, with shorter waiting time and higher fluency throughout the process compared to traditional sedimentation or flocculant methods.

[0029] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic structural diagram of an oil-water separation device according to an embodiment of the present invention is shown;

[0032] Figure 2 A schematic cross-sectional view of an outer cylinder according to an embodiment of the present invention is shown;

[0033] Figure 3 A schematic diagram of the structure of a preprocessing unit according to an embodiment of the present invention is shown;

[0034] Figure 4 A schematic structural diagram of a liquid oil solidification unit according to an embodiment of the present invention is shown;

[0035] Figure 5 A schematic structural diagram of a separation unit according to an embodiment of the present invention is shown;

[0036] Figure 6 A schematic diagram showing the connection between the separation cylinder and the spiral conveying blade according to an embodiment of the present invention is shown;

[0037] Figure 7 The embodiment of the present invention is shown Figure 5 The enlarged schematic diagram in circle A;

[0038] Figure 8 A structural schematic diagram of a brush shaking mechanism according to an embodiment of the present invention is shown.

[0039] In the figure: 100, outer cylinder; 110, feeding funnel; 200, heat exchanger; 300, pretreatment unit; 310, first annular tube; 311, second annular tube; 312, third annular tube; 320, inner circulation tube; 330, raw material water outlet pipe; 340, intermediate port; 350, refrigerant interface; 360, heat exchange tube; 400, liquid oil solidification unit; 410, first inner cylinder; 420, second inner cylinder; 430, third inner cylinder; 440, raw material cooling tank; 500, separation unit; 510, column; 511, Top plate; 520, servo motor; 530, solid oil storage tank; 531, solid oil suction tube; 540, separation cylinder; 541, liquid inlet; 542, liquid outlet; 550, spiral conveying blade; 551, water filter; 560, motor mounting plate; 600, filter cleaning unit; 610, horizontal connecting rod; 620, shaking brush mechanism; 621, bottom plate; 622, first latex rod; 623, second latex rod; 630, suction pipe; 640, oil suction head; 650, oil suction port; 660, shovel plate; 700, semi-finished product liquid delivery pipe. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The embodiment of the present invention provides a device for rapid oil-water separation of kitchen waste liquid garbage, comprising an outer cylinder 100. For example, Figure 1 and Figure 2 As shown, a feeding hopper 110 is provided at the top center of the outer cylinder 100 . The output end of the feeding hopper 110 extends into the cavity of the outer cylinder 100 and is connected to a pre-treatment unit 300 , which is located directly below the feeding hopper 110 .

[0042] A liquid oil solidification unit 400 is disposed directly below the pretreatment unit 300, and the output end of the pretreatment unit 300 is connected to the input end of the liquid oil solidification unit 400. The material of the liquid oil solidification unit 400 is but not limited to copper. The pretreatment unit 300 is used to reduce the temperature of the cavity of the liquid oil solidification unit 400, and the liquid oil solidification unit 400 is used to cool the liquid garbage, so that the liquid oil in the liquid garbage is solidified into a solid.

[0043] A heat exchanger 200 is disposed on one side of the outer cylinder 100 , and an output end of the heat exchanger 200 is connected to an input end of the pre-processing unit 300 .

[0044] A plurality of separation units 500 are distributed in a circular array around the outer cylinder 100, and a filter cleaning unit 600 is installed on the separation unit 500. The separation unit 500 is used to separate the solid oil from the cooled liquid garbage.

[0045] A group of semi-finished product liquid delivery pipes 700 are connected between the input end of each group of separation units 500 and the output end of the liquid oil solidification unit 400.

[0046] The pre-treatment unit 300 includes a first annular pipe 310. For example, Figure 3As shown, the first annular tube 310 is located in the outer cylinder 100, and the central axis of the first annular tube 310 coincides with the outer cylinder 100 and the feeding funnel 110. A second annular tube 311 is provided outside the first annular tube 310, and a third annular tube 312 is provided outside the second annular tube 311. The central axes of the first annular tube 310, the second annular tube 311 and the third annular tube 312 coincide with each other and have the same height. A first gap is provided between the first annular tube 310 and the second annular tube 311, and a second gap is provided between the second annular tube 311 and the third annular tube 312. The first gap and the second gap have the same width. An inner circulation pipe 320 is connected between the first annular tube 310, the second annular tube 311 and the third annular tube 312. An intermediate port 340 is provided on the third annular tube 312, and the intermediate port 340 is connected to the output end of the heat exchanger 200. A plurality of groups of refrigerant interfaces 350 are distributed in an annular array at the bottom of the first annular tube 310, the second annular tube 311 and the third annular tube 312. A group of heat exchange tubes 360 are vertically connected to the bottom of each group of refrigerant interfaces 350. A plurality of groups of raw material water outlet pipes 330 are distributed in an annular array directly above the first gap and the second gap, and the input end of the raw material water outlet pipe 330 is connected to the output end of the loading funnel 110.

[0047] Preferably, the pretreatment unit 300 may further include a fourth annular pipe, a fifth annular pipe, a sixth annular pipe, ... In this embodiment, the first annular pipe 310, the second annular pipe 311 and the third annular pipe 312 are selected as preferred embodiments.

[0048] The liquid oil solidification unit 400 includes a first inner cylinder 410. For example, Figure 4As shown, the first inner cylinder 410 is located directly below the first annular tube 310, and the central axis of the first inner cylinder 410 coincides with the central axis of the first annular tube 310. A second inner cylinder 420 is provided outside the first inner cylinder 410, and a third inner cylinder 430 is provided outside the second inner cylinder 420. The central axes of the first inner cylinder 410, the second inner cylinder 420 and the third inner cylinder 430 all coincide. Several groups of exchange tube slots are distributed in an annular array on the top of the first inner cylinder 410, the second inner cylinder 420 and the third inner cylinder 430. The number of exchange tube slots is the same as the number of heat exchange tubes 360, and each group of heat exchange tubes 360 is plugged into a corresponding group of exchange tube slots. A group of raw material cooling grooves 440 are provided between the first inner cylinder 410 and the second inner cylinder 420, and between the second inner cylinder 420 and the third inner cylinder 430. Each group of raw material outlet pipes 330 is located directly above a corresponding group of raw material cooling grooves 440. A feeding hopper is provided at the bottom of the third inner cylinder 430, and the bottom of each group of the raw material cooling troughs 440 is connected to the feeding hopper. The input end of each group of the semi-finished product liquid delivery pipes 700 is connected to the output end of the feeding hopper.

[0049] Preferably, the liquid oil solidification unit 400 may further include a fourth inner cylinder, a fifth inner cylinder, a sixth inner cylinder, ..., and in this embodiment, the first inner cylinder 410, the second inner cylinder 420 and the third inner cylinder are selected as preferred embodiments.

[0050] When performing the oil-water separation operation, the heat exchanger 200 is first started, and the refrigerant is cooled by the heat exchanger 200. Then, the refrigerant enters the first annular tube 310, the second annular tube 311, and the third annular tube 312 through the intermediate port 340 and the inner circulation tube 320, and then enters each group of heat exchange tubes 360 through each group of refrigerant interfaces 350. Since each group of heat exchange tubes 360 is respectively inserted in the first inner tube 410, the second inner tube 420, and the third inner tube 430 in an annular array, and the first inner tube 410, the second inner tube 420, and the third inner tube 430 are made of copper with high thermal conductivity, when the refrigerant flows through each group of heat exchange tubes 360, the temperature of the inner and outer side walls of the first inner tube 410, the second inner tube 420, and the third inner tube 430 is reduced. When the liquid waste enters each group of raw material outlet pipes 330 through the feeding funnel 110 and then enters the first gap or the second gap from the raw material outlet pipe 330, its temperature will also decrease, so that the liquid oil in the liquid waste is pre-cooled and solidified into solid oil, thereby obtaining solid-liquid mixed waste. This speeds up the overall speed of oil-water separation.

[0051] The separation unit 500 includes a column 510. For example, Figure 5 and Figure 6As shown, a top plate 511 is installed at the top of the column 510 near the edge of one side wall of the outer cylinder 100, and a servo motor 520 is installed on the top plate 511. A solid oil storage tank 530 is provided on one side of the column 510, and a vacuum pump is provided on the output end of the solid oil storage tank 530, and a solid oil suction pipe 531 is connected to the vacuum pump. A separation cylinder 540 is provided just below the top plate 511, and a liquid inlet 541 is provided on the separation cylinder 540, and the liquid inlet 541 is connected to the semi-finished product liquid delivery pipe 700. A liquid outlet 542 is provided below the liquid inlet 541. A spiral conveying blade 550 is provided in the separation cylinder 540, and the top of the spiral conveying blade 550 extends to the outside of the separation cylinder 540, and a motor mounting plate 560 is installed, and the top of the motor mounting plate 560 is transmission-connected to the output end of the servo motor 520. The blades of the spiral conveying blade 550 are slidably fitted to the inner walls of the separation cylinder 540 , and a water filter net 551 is provided on the spiral conveying blade 550 .

[0052] The solid-liquid mixed garbage enters the discharge hopper, and is then transported to each group of separation barrels 540 by the semi-finished product liquid delivery pipes 700. Then the servo motor 520 is started, and the spiral conveying blade 550 is driven to rotate by the servo motor 520. The solid oil in the solid-liquid mixed garbage in the separation barrel 540 is brought vertically upward out of the separation barrel 540 by the spiral structure of the spiral conveying blade 550, and then the solid oil on the surface of the spiral conveying blade 550 is removed by the filter cleaning unit 600. The liquid garbage in the solid-liquid mixed garbage will fall back into the separation barrel 540 from the gap on the water filter net 551 under the action of gravity, and finally discharged through the liquid outlet 542. Without other methods such as precipitation and chemical reaction, the oil and water are quickly separated.

[0053] The filter cleaning unit 600 includes two sets of horizontal connecting rods 610. Figure 7 As shown, one end of the two groups of horizontal connecting rods 610 is installed on the column 510, and the other end extends horizontally toward the side of the spiral conveying blade 550. The ends of the two groups of horizontal connecting rods 610 away from the column 510 are respectively installed with a shaking brush mechanism 620 and an oil suction mechanism, and the oil suction mechanism and the shaking brush mechanism 620 are both located above the separation cylinder 540, and the bottom of the oil suction mechanism and the top of the shaking brush mechanism 620 are respectively slidably attached to the upper surface and lower surface of the spiral conveying blade 550. The oil suction mechanism includes a suction pipe 630, which is connected to a corresponding group of horizontal connecting rods 610, and the output end of the suction pipe 630 is connected to the input end of the solid oil suction pipe 531. The input end of the suction pipe 630 is connected to an oil suction head 640, and an oil suction port 650 is opened on the side wall of the oil suction head 640, and a shovel plate 660 is installed at the bottom edge of the opening of the oil suction port 650. The bottom of the shovel plate 660 is slidably fitted with the upper surface of the spiral conveying blade 550 .

[0054] The brush shaking mechanism 620 includes a bottom plate 621. Figure 8 As shown, the bottom plate 621 is installed on a corresponding set of horizontal connecting rods 610, and a plurality of groups of first latex rods 622 are evenly distributed on the top of the bottom plate 621. A group of second latex rods 623 is provided between two adjacent groups of the first latex rods 622, and the length of the second latex rods 623 is longer than that of the first latex rods 622. The tops of the first latex rods 622 and the second latex rods 623 are both slidably fitted with the lower surface of the spiral conveying blade 550.

[0055] After the spiral conveying blade 550 brings the solid oil out of the separation cylinder 540, as the spiral conveying blade 550 rotates, the spiral conveying blade 550 blades slide and fit with the brush mechanism 620 and the oil suction mechanism. When the first latex rod 622 and the second latex rod 623 come into contact with the solid oil adsorbed on the surface of the water filter net 551, the elastic force of the first latex rod 622 and the second latex rod 623 is used to separate the solid oil from the water filter net 551, and then the vacuum pump is started, and the vacuum pump is connected with the solid oil suction pipe 531 and the oil suction head 640, so that the oil suction port 650 generates suction, and then the shovel plate 660 is used to shovel the solid oil separated from the water filter net 551, and then the solid oil is sucked into the oil suction head 640 by the oil suction port 650, and finally discharged into the solid oil storage tank 530 through the solid oil suction pipe 531. At the same time, since the first latex rod 622 and the second latex rod 623 are at different heights and are cross-arranged, the first latex rod 622 can penetrate deeper into the gap of the water filter net 551 when in contact with the water filter net 551, thereby increasing the contact area and force, thereby avoiding the solid oil from being adsorbed on the water filter net 551 and being unable to be cleaned, thereby improving the effect of the shaking brush mechanism 620 in cleaning the solid oil.

[0056] Beneficial effects:

[0057] 1. First, the liquid waste is cooled by the liquid oil solidification unit 400, so that the liquid oil in the liquid waste is solidified and discharged into the separation cylinder 540, and then the solid oil is taken out by the spiral conveying blade 550, while other liquid waste will fall back into the separation cylinder 540 from the gap of the water filter 551. Thus, the oil and water are separated quickly, and the waiting time is short compared with the traditional sedimentation method or flocculant method, and the whole process is smooth. And the separated solid oil is cleaned by the oil suction mechanism and the shaking brush mechanism 620, realizing the function of automatic collection of oil and water, which not only improves the efficiency of oil and water separation, but also reduces the labor intensity of later cleaning work.

[0058] 2. Since the first latex rod 622 and the second latex rod 623 are at different heights and are cross-arranged, the first latex rod 622 can penetrate deeper into the gap of the water filter net 551 when in contact with the water filter net 551, thereby increasing the contact area and strength, thereby preventing solid oil from being adsorbed on the water filter net 551 and being unable to be cleaned, thereby improving the effect of the shaking brush mechanism 620 in cleaning solid oil.

[0059] 3. The space for cooling liquid waste is divided into several groups of raw material cooling tanks 440 by the first inner tube 410, the second inner tube 420 and the third inner tube 430, and the first inner tube 410, the second inner tube 420 and the third inner tube 430 are cooled by each group of heat exchange tubes 360. At the same time, the liquid waste is evenly distributed to each group of raw material cooling tanks 440 by using each group of raw material outlet pipes 330, so as to increase the contact area between the liquid waste and the cooling source, so that the liquid waste can be cooled separately, which not only speeds up the cooling speed, but also avoids the occurrence of incomplete cooling. In this way, the cooling effect is improved.

[0060] Based on the above-mentioned kitchen waste liquid waste rapid oil-water separation device, the embodiment of the present invention further proposes a separation method for the oil-water separation device. Exemplarily, the separation method includes:

[0061] Start the heat exchanger switch to transfer the refrigerant to each group of heat exchange tubes;

[0062] After the refrigerant lowers the temperature of the first inner cylinder, the second inner cylinder and the third inner cylinder, pour the liquid waste into the upper feed hopper;

[0063] Liquid waste is evenly discharged into each group of raw material cooling tanks through each group of raw material outlet pipes;

[0064] After the liquid waste contacts the inner wall of the raw material cooling tank, the temperature is reduced, so that the liquid oil in the liquid waste solidifies, and a solid-liquid mixed waste is obtained;

[0065] After the solid-liquid mixed garbage enters each group of separation cylinders, the servo motor is started, and the spiral conveying blades are driven to rotate by the servo motor;

[0066] The spiral conveying blades transport the solid oil in the separation cylinder vertically upwards while rotating, while the remaining liquid waste will fall back into the separation cylinder through the water filter net and finally be discharged through the liquid outlet;

[0067] The shaking brush mechanism slides and fits with the water filter net, and beats the solid oil adsorbed on the surface of the water filter net to separate it from the water filter net;

[0068] Start the vacuum pump to provide suction for the oil suction mechanism, and then the solid oil is sucked out through the oil suction mechanism.

[0069] The solid oil is taken out by the spiral conveying blades, while other liquid waste will fall back into the separation cylinder through the gaps in the water filter. This allows for rapid separation of oil and water, with shorter waiting time and higher fluency throughout the process compared to traditional sedimentation or flocculant methods.

[0070] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rapid oil-water separation device for liquid kitchen waste, comprising an outer cylinder (100), characterized in that: A pretreatment unit (300) is provided in the outer cylinder (100), and the bottom of the pretreatment unit (300) is connected to a liquid oil solidification unit (400); a plurality of groups of separation units (500) are distributed in a circular array around the outer cylinder (100); The separation unit (500) comprises a top plate (511), on which a servo motor (520) is disposed; a solid oil storage tank (530) is disposed on one side of the top plate (511), and a vacuum pump is disposed on the output end of the solid oil storage tank (530); a separation cylinder (540) is disposed directly below the top plate (511), and a liquid inlet (541) is provided on the separation cylinder (540), and the liquid inlet (541) is communicated with a semi-finished product liquid delivery pipe (700); a spiral conveying blade (550) is disposed in the separation cylinder (540), and the top of the spiral conveying blade (550) extends to the outside of the separation cylinder (540) and is transmission-connected to the output end of the servo motor (520); and a water filter net (551) is disposed on the spiral conveying blade (550); A filter screen cleaning unit (600) is provided on the water filter screen (551), and the filter screen cleaning unit (600) comprises a shaking brush mechanism (620) and an oil suction mechanism; the oil suction mechanism and the shaking brush mechanism (620) are both located above the separation cylinder (540), and the bottom of the oil suction mechanism and the top of the shaking brush mechanism (620) are slidably attached to the upper surface and the lower surface of the spiral conveying blade (550) respectively; the output end of the oil suction mechanism is connected to a vacuum pump; The pretreatment unit (300) comprises a first annular tube (310); the first annular tube (310) is located inside the outer cylinder (100), and the central axis of the first annular tube (310) coincides with the outer cylinder (100) and the loading funnel (110); a second annular tube (311) is provided outside the first annular tube (310), and a third annular tube (312) is provided outside the second annular tube (311); the central axes of the first annular tube (310), the second annular tube (311) and the third annular tube (312) coincide with each other and have the same height; A first gap is provided between the first annular tube (310) and the second annular tube (311), and a second gap is provided between the second annular tube (311) and the third annular tube (312), and the first gap and the second gap have the same width; an internal circulation tube (320) is connected between the first annular tube (310), the second annular tube (311) and the third annular tube (312); an intermediate port (340) is provided on the third annular tube (312), and the intermediate port (340) is connected to the output end of the heat exchanger (200); The bottoms of the first annular tube (310), the second annular tube (311) and the third annular tube (312) are all provided with a plurality of groups of refrigerant interfaces (350) distributed in an annular array; the bottom of each group of refrigerant interfaces (350) is vertically connected to a group of heat exchange tubes (360); directly above the first gap and the second gap, a plurality of groups of raw material water outlet pipes (330) are distributed in an annular array, and the input ends of the raw material water outlet pipes (330) are connected to the output end of the loading funnel (110); The liquid oil solidification unit (400) comprises a first inner cylinder (410); the first inner cylinder (410) is located directly below the first annular tube (310), and the central axis of the first inner cylinder (410) coincides with the central axis of the first annular tube (310); a second inner cylinder (420) is arranged outside the first inner cylinder (410), and a third inner cylinder (430) is arranged outside the second inner cylinder (420), and the central axes of the first inner cylinder (410), the second inner cylinder (420) and the third inner cylinder (430) all coincide; A plurality of groups of exchange tube slots are arranged in a circular array on the top of the first inner tube (410), the second inner tube (420) and the third inner tube (430); the number of the exchange tube slots is the same as the number of the heat exchange tubes (360); each group of the heat exchange tubes (360) is plugged into a corresponding group of exchange tube slots; a group of raw material cooling grooves (440) is provided between the first inner tube (410) and the second inner tube (420), and between the second inner tube (420) and the third inner tube (430); Each group of the raw material water outlet pipes (330) is located directly above a corresponding group of raw material cooling troughs (440); a material discharge funnel is provided at the bottom of the third inner cylinder (430), and the bottom of each group of the raw material cooling troughs (440) is connected to the material discharge funnel.

2. The device for rapid oil-water separation of kitchen waste liquid garbage according to claim 1, characterized in that: A loading funnel (110) is provided at the center of the top of the outer cylinder (100); the output end of the loading funnel (110) extends into the cavity of the outer cylinder (100) and is connected to the input end of the pretreatment unit (300); A heat exchanger (200) is provided on one side of the outer cylinder (100), and an output end of the heat exchanger (200) is connected to an input end of the pre-processing unit (300).

3. The device for rapid oil-water separation of kitchen waste liquid garbage according to claim 1, characterized in that: The oil suction mechanism comprises a suction pipe (630), the suction pipe (630) being connected to a corresponding set of horizontal connecting rods (610), and the output end of the suction pipe (630) being connected to the input end of the solid oil suction pipe (531); the input end of the suction pipe (630) is connected to an oil suction head (640), a side wall of the oil suction head (640) is provided with an oil suction port (650), and a shovel plate (660) is installed at the bottom edge of the opening of the oil suction port (650); the bottom of the shovel plate (660) is slidably fitted with the upper surface of the blade of the spiral conveying blade (550).

4. A separation method using the kitchen waste liquid waste rapid oil-water separation device according to any one of claims 1 to 3, characterized in that: The separation method comprises: The liquid waste is cooled by the liquid oil solidification unit and the pretreatment unit, so that the liquid oil in the liquid waste is cooled and solidified to obtain solid-liquid mixed waste; Discharge the solid-liquid mixed garbage into each group of separation cylinders respectively, start the servo motor, and drive the spiral conveying blade to rotate through the servo motor; The spiral conveying blades transport the solid oil in the separation cylinder vertically upwards while rotating, while the remaining liquid waste will fall back into the separation cylinder through the water filter and finally be discharged separately; The shaking brush mechanism slides and fits with the water filter net, and beats the solid oil adsorbed on the surface of the water filter net to separate it from the water filter net; Start the vacuum pump to provide suction for the oil suction mechanism, and then the solid oil is sucked out through the oil suction mechanism.

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