Solid-liquid-oil separation device for kitchen garbage

Abstract

The utility model relates to the technical field of kitchen garbage treatment, in particular to a solid-liquid-oil separation device for kitchen garbage, which comprises a separation tank for accommodating a mixture; at least part of the filter basket is arranged in the separation tank, and the filter basket is used for solid-liquid separation; the oil-water separation mechanism is arranged in the separation tank, the oil-water separation mechanism comprises an oil scraping assembly and an oil collection tank, and the oil scraping assembly is used for enabling animal and vegetable oil of a mixture in the separation tank to enter the oil collection tank; the heating mechanism is used for heating the mixture in the separation tank; due to the arrangement of the heating mechanism, animal and vegetable oil can be effectively prevented from being solidified on the inner wall of the separation tank due to low temperature, so that continuous accumulation of the animal and vegetable oil on the inner wall of the separation tank is avoided, and the oil collection rate is improved.

Description

Technical Field

[0001] This disclosure relates to the field of kitchen waste treatment technology, and in particular to a solid-liquid-oil separation device for kitchen waste. Background Technology

[0002] Kitchen waste typically originates from food processing, catering services, and institutional meal services. It includes discarded vegetable scraps, leftover food, fruit peels, eggshells, tea dregs, and bones (chicken bones, fish bones, etc.). Compared to other household waste, kitchen waste often has a distinctive odor, thus requiring timely disposal. Containing extremely high levels of moisture and organic matter, kitchen waste is easily perishable and produces a foul smell. However, with proper treatment and processing, it can be transformed into new resources. Its high organic matter content allows the organic matter, after strict processing, to be used as fertilizer and animal feed. It can also produce biogas for fuel or power generation, while the oil and fat components can be used to produce biofuels.

[0003] Among various catering categories, the hot pot industry generates a significant amount of oil. To facilitate the separation of oil in the hot pot industry, a solid-liquid separation device specifically designed for this sector is needed. Patent No. 2020219365535 discloses a dry-wet solid-liquid separation device for kitchen waste that is well-suited for the hot pot industry. The device includes a separation box and a filter box located at the top of the separation box. The side wall of the separation box has an oil drain outlet and a water drain outlet arranged sequentially from top to bottom. A suction pipe is detachably connected to the water drain outlet via a disassembly component. A vent pipe is connected to the suction pipe, allowing it to connect to the air. This patented technical solution, to a certain extent, avoids the problem of oil and water being discharged together.

[0004] However, in actual use, a large amount of grease adheres to the inner wall of this solid-liquid separation device, especially in the hot pot industry where the grease used generally has a low freezing point. In cold winter weather, a large amount of grease will solidify. Once the grease adheres to the inner wall of the container and pipes solidifies, it is difficult to drain from the oil outlet. This not only affects the oil extraction efficiency of the oil-water separation, but the continuous accumulation of grease on the inner wall of the device also causes considerable inconvenience to the oil-water separation operation. Utility Model Content

[0005] In view of the shortcomings or problems existing in the prior art, this disclosure provides a solid-liquid-oil separation device for kitchen waste, which has a good solid-liquid separation effect and a high oil-water separation efficiency.

[0006] The technical solution adopted by this disclosure to solve the above-mentioned technical problem is: a solid-liquid-oil separation device for kitchen waste, comprising:

[0007] Separation tank, used to hold mixtures;

[0008] A filter basket, at least partially disposed in a separation tank, is used for solid-liquid separation;

[0009] An oil-water separation mechanism is provided in a separation tank. The oil-water separation mechanism includes an oil scraping component and an oil collection tank. The oil scraping component is used to allow the animal and vegetable oils in the mixture in the separation tank to enter the oil collection tank.

[0010] Heating mechanism, used to heat the mixture in the separation tank.

[0011] In a preferred embodiment, the oil scraping assembly includes a rotating drum assembly and a scraper blade. The rotating drum assembly is rotatably disposed in the separation tank, one side of the scraper blade contacts the rotating drum assembly, and the other side of the scraper blade contacts the oil collection tank.

[0012] In a preferred embodiment, the rotating drum assembly includes a rotating shaft and a rotating drum disposed outside the rotating shaft. The rotating shaft is connected to a drive assembly for driving its rotation, and the rotating drum rotates together with the rotating shaft.

[0013] In a preferred embodiment, the oil collection tank includes a bottom plate and a first side plate and a second side plate arranged opposite to each other. The first side plate is arranged vertically, and the second side plate is arranged at an inclination. One side of the scraper contacts the rotating cylinder, and the other side of the scraper contacts the second side plate.

[0014] In a preferred embodiment, an oil collection tank is provided below the separation tank, and an oil outlet is provided on the bottom plate. The oil outlet is connected to an oil drain pipe, and the other end of the oil drain pipe is connected to the oil collection tank.

[0015] In a preferred embodiment, the filter basket is disposed on the side of the oil-water separation mechanism. The separation tank is provided with two parallel support rods, and the support rods are provided with anti-slip limiting points. The filter basket includes a basket body and wing plates disposed on both sides of the basket body. The two wing plates are respectively attached to the two support rods, and the wing plates are provided with handles.

[0016] In a preferred embodiment, the heating mechanism is located outside the separation tank, and the separation tank is also equipped with a temperature measuring component for measuring the liquid temperature.

[0017] In a preferred embodiment, a float is provided in the separation tank, which is used to indicate the liquid level in the separation tank.

[0018] In a preferred embodiment, the bottom wall of the separation tank is provided with a drain port, the drain port is connected to a drain pipe, and a switch valve is provided on the drain pipe to control the opening and closing of the drain pipe.

[0019] In a preferred embodiment, the system further includes an overflow assembly, which includes an overflow pipe and an overflow port located on the side wall of the separation tank. One end of the overflow pipe is connected to a drain pipe, and the other end is connected to the overflow port.

[0020] In a preferred embodiment, the overflow pipe includes a first pipe and a second pipe that are interconnected. The second pipe is vertically arranged in the separation tank, and there is a gap between the second pipe and the bottom wall of the separation tank. One end of the first pipe is connected to the drain pipe, and the other end passes through the overflow port and is connected to the second pipe.

[0021] Compared with existing products, this application, due to the inclusion of a heating mechanism, ensures sufficient fluidity of animal and vegetable oils and effectively prevents them from solidifying on the inner wall of the separation tank due to low temperature, thus avoiding continuous accumulation of animal and vegetable oils on the inner wall of the separation tank. Because of the inclusion of an oil scraping component and an oil collection tank, the animal and vegetable oils in the separation tank are adsorbed onto the oil scraping component, which then transfers the oils to the oil collection tank for collection. This significantly reduces the adhesion of animal and vegetable oils to the inner wall of the separation tank, improving the collection rate. The solid-liquid separation device of this application can conveniently separate solids and liquids, as well as oil and water, and efficiently collect animal and vegetable oils. Furthermore, when using the solid-liquid separation device of this application for collecting animal and vegetable oils, there is no need to use other equipment to heat and melt the solidified animal and vegetable oils for pretreatment, simplifying the processing steps and making it more convenient to use. Attached Figure Description

[0022] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0023] Figure 1 This is one of the structural schematic diagrams of a solid-liquid-oil separation device for kitchen waste disclosed herein;

[0024] Figure 2 This is the second schematic diagram of a solid-liquid-oil separation device for kitchen waste disclosed herein;

[0025] Figure 3 This is the third schematic diagram of a solid-liquid-oil separation device for kitchen waste disclosed herein;

[0026] Figure 4 This is the fourth structural schematic diagram of a solid-liquid-oil separation device for kitchen waste disclosed herein;

[0027] Figure 5 This is one of the structural diagrams showing the connection between the oil-water separation mechanism and the oil collection tank disclosed herein;

[0028] Figure 6This is the second schematic diagram of the connection between the oil-water separation mechanism and the oil collection tank disclosed herein;

[0029] Figure 7 This is a schematic diagram of the connection between the overflow pipe and the drain pipe disclosed in this publication.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Separation tank; 2. Filter basket; 3. Oil scraper assembly; 5. Rotating cylinder; 6. Scraper; 7. Oil collection tank; 8. Drive assembly; 10. Oil collection bucket; 11. Oil outlet; 12. Drain port; 13. Drain pipe; 14. Switch valve; 15. Overflow pipe; 16. First pipe; 17. Second pipe; 18. Oil drain pipe; 19. Float ball; 20. Temperature measuring assembly; 21. Base plate; 22. First side plate; 23. Second side plate. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0033] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation of this utility model.

[0034] Please refer to Figure 1 , Figure 2 and Figure 4As shown, this application provides a solid-liquid-oil separation device for kitchen waste used in hot pot restaurants and other heavy-oil catering businesses. The device includes a separation tank 1, a filter basket 2, and an oil-water separation mechanism. The filter basket 2 is used for solid-liquid separation; large solid particles remain in the filter basket 2, while the mixture (oil, water, and a small amount of small solid particles) passes through the filter basket 2 into the separation tank 1 for further separation. The oil-water separation mechanism includes an oil scraping component 3 and an oil collection tank 7. The oil scraping component 3 allows the animal and vegetable oils in the mixture from the separation tank 1 to enter the oil collection tank 7, which collects the animal and vegetable oils. The device also includes a heating mechanism to heat the mixture in the separation tank 1, preventing the animal and vegetable oils from solidifying on the inner wall of the separation tank 1 due to low temperature. It is understood that the solid-liquid separation device of this application can be used for ordinary kitchen waste treatment, especially suitable for collecting animal and vegetable oils from hot pot restaurants and other heavy-oil catering businesses, and can also be used for further separation of oil-water mixtures.

[0035] During use, kitchen waste is poured from the filter basket 2 into the separation tank 1. Large solid particles remain in the filter basket 2, while the oil-water mixture enters the separation tank 1 for further separation. The heating mechanism effectively prevents the animal and vegetable oils in the oil-water mixture from solidifying on the inner wall of the separation tank 1 due to low temperature, thus avoiding continuous accumulation of these oils. The oil scraping assembly 3 and the oil collection tank 7 ensure that the animal and vegetable oils in the separation tank 1 are adsorbed onto the oil scraping assembly 3, which then transfers them to the oil collection tank 7 for collection. This significantly reduces the adhesion of animal and vegetable oils to the inner wall of the separation tank 1, improving the collection rate.

[0036] Specifically, the heating mechanism is located on the side wall or bottom wall of the separation tank 1. That is, the heating mechanism can be located on the inner or outer side wall of the separation tank 1, or on the inner or outer surface of the bottom wall. Since the separation tank 1 contains a large amount of animal and vegetable oils and fine particles, these fine particles either settle at the bottom of the separation tank 1 or float in the oil-water mixture. If the heating mechanism is located inside the separation tank 1, the animal and vegetable oils mixed with fine particles easily adhere to the surface of the heating mechanism. This not only affects the heat dissipation effect of the heating mechanism but also accelerates its aging. Preferably, the heating mechanism is located outside the separation tank 1. The heating mechanism is an electric heating rod, or it can be a pipe laid at the bottom of the separation tank 1. The pipe is connected to a circulation pump, which introduces hot water into the pipe. The hot water circulates along the pipe under the action of the circulation pump (similar to the principle of underfloor heating).

[0037] To monitor the temperature of the liquid in the separation tank 1, a temperature measuring component 20 for measuring the temperature of the oil-water mixture is also installed in the separation tank 1. Specifically, the temperature measuring component 20 is a thermocouple. When the temperature measuring component 20 detects that the temperature of the oil-water mixture is lower than a preset value, the heating mechanism starts to work, thus effectively preventing the solidification of the oil-water mixture. To make oil-water separation more efficient, the temperature in the separation tank 1 should generally be maintained at 80-100℃.

[0038] Furthermore, the filter basket 2 is located on the side of the oil-water separation mechanism, the separation tank 1 is provided with two parallel support rods, the filter basket 2 includes a basket body and wing plates located on both sides of the basket body, the two wing plates are respectively attached to the two support rods, the support rods are provided with anti-slip limiting points to prevent the filter basket 2 from sliding, and the wing plates are provided with handles to facilitate lifting the filter basket 2.

[0039] For further details, please refer to the following: Figure 5 and Figure 6 As shown, the oil scraping assembly 3 is located at the upper part of the separation tank 1. It includes a rotating drum assembly and a scraper 6. The rotating drum assembly is rotatably disposed in the separation tank 1. One side of the scraper 6 contacts the rotating drum assembly, and the other side of the scraper 6 contacts the oil collection tank 7. Animal and vegetable oils in the separation tank 1 are adsorbed onto the rotating drum assembly. The scraper 6 is used to scrape off the animal and vegetable oils from the rotating drum assembly and allow the scraped-off animal and vegetable oils to enter the oil collection tank 7. It can be understood that, since the density of animal and vegetable oils is less than that of water, the animal and vegetable oils accumulate in the upper layer of the separation tank 1.

[0040] Specifically, the rotating drum assembly includes a rotating shaft and a rotating drum 5 located outside the rotating shaft. The rotating shaft is connected to a drive assembly 8 for driving its rotation, and the rotating drum 5 rotates together with the rotating shaft. Preferably, the drive assembly 8 is a motor. The oil collection tank 7 includes a bottom plate 21 and a first side plate 22 and a second side plate 23 arranged opposite to each other. The first side plate 22 is vertically arranged, and the second side plate 23 is inclined. One side of the scraper 6 contacts the rotating drum 5, and the other side of the scraper 6 contacts the second side plate 23; the length of the scraper 6 is greater than the length of the rotating drum 5. The rotating drum 5 is approximately cylindrical. The animal and vegetable oils in the separation tank 1 are adsorbed onto the surface of the rotating drum 5. As the rotating drum 5 rotates, the scraper 6 scrapes off the animal and vegetable oils from the surface of the rotating drum 5. Preferably, the scraper 6 is inclined, and the inclination angle of the scraper 6 is basically equal to the inclination angle of the second side plate 23. The height of the contact position between the scraper 6 and the rotating drum 5 is higher than the height of the contact position between the scraper 6 and the second side plate 23. This arrangement allows the animal and vegetable oils scraped off by the scraper 6 to enter the oil collection tank 7 more effectively. The second side plate 23 is positioned close to the rotating cylinder 5, and its inclined arrangement facilitates the entry of animal and vegetable oils into the oil collection tank 7. The inclined arrangement of the second side plate 23 serves as a guide. The first side plate 22 acts as a barrier; its vertical arrangement prevents animal and vegetable oils in the oil collection tank 7 from slipping into the separation tank 1. The oil collection tank 7 also includes a third and a fourth side plate, which are respectively positioned at the ends of the first side plate 22 and the second side plate 23. Thus, the bottom plate 21, the first side plate 22, the second side plate 23, the third side plate, and the fourth side plate form a relatively closed separation tank 1 with only an opening at the top.

[0041] It should be noted that before the solid-liquid separation device of this application starts working, the separation tank 1 should contain an appropriate amount of water so that the oil layer in the poured oil-water mixture can contact the oil scraping component 3 to achieve oil-water separation. To facilitate the control of the liquid level in the separation tank 1, a float 19 is installed in the separation tank 1. The float 19 rises with the liquid level of the oil-water mixture to indicate the liquid level in the separation tank 1. When the liquid level of the oil-water mixture in the separation tank 1 is low, the float 19 is also low. If the liquid level of the oil-water mixture is so low that the rotating cylinder 5 cannot contact the oil layer or only a small portion contacts the oil layer, the oil collection rate is low, and water needs to be added to the separation tank 1 to raise the oil layer until most or all of the rotating cylinder 5 is immersed in the oil layer. In addition, the float 19 also serves as a liquid level warning to prevent liquid overflow due to a high liquid level in the separation tank 1. When the level of the oil-water mixture in the separation tank 1 is so low that the rotating cylinder 5 cannot contact the oil layer, water can be added to the separation tank 1 manually, or a water inlet mechanism can be added and the float 19 can be connected to the controller. Once the level is lower than a certain value, the controller will control the water inlet mechanism to send water into the separation tank 1.

[0042] Please continue reading. Figure 5As shown, an oil collection tank 10 is provided below the separation tank 1, and an oil outlet 11 is provided on the bottom plate 21. The oil outlet 11 is connected to an oil drain pipe 18, and the other end of the oil drain pipe 18 is connected to the oil collection tank 10. That is, the animal and vegetable oils in the oil collection tank 7 finally enter the oil collection tank 10 through the oil outlet 11. Since the structure of the filter basket 2 in this application is relatively simple, it saves a lot of space, and the oil collection tank 10 can be made larger to hold more animal and vegetable oils. The capacity of the oil collection tank 10 in this application can reach 120 liters. The oil outlet 11 can be set at one end of the bottom plate 21. In this case, the bottom plate 21 is tilted, and the oil outlet 11 is set at the lower end of the bottom plate 21 to facilitate the entry of animal and vegetable oils into the oil outlet 11. The oil outlet 11 can be set in the middle of the bottom plate 21. In this case, the height of the two ends of the bottom plate 21 needs to be set higher, and the height of the middle part needs to be set lower. The oil outlet 11 is set at a lower position on the bottom plate 21 to facilitate the entry of animal and vegetable oils into the oil outlet 11.

[0043] like Figure 2 and Figure 3 As shown, the bottom wall of the separation tank 1 is provided with an exhaust port 12, which is connected to an exhaust pipe 13. An on / off valve 14 is installed on the exhaust pipe 13 to control the opening and closing of the exhaust pipe 13. Since some fine particulate sediment will inevitably exist in the separation tank 1, and this sediment accumulates at the bottom of the separation tank 1, it is necessary to periodically discharge this sediment. The exhaust port 12 facilitates the discharge of the sediment.

[0044] Please refer to Figure 4 and Figure 7As shown, to prevent liquid overflow due to excessive liquid level in separation tank 1, the solid-liquid separation device also includes an overflow assembly. The overflow assembly includes an overflow pipe 15 and an overflow port located on the side wall of separation tank 1. One end of the overflow pipe 15 is connected to the drain pipe 13, and the other end is connected to the overflow port. The overflow pipe 15 includes a first pipe 16 and a second pipe 17 that are interconnected. The second pipe 17 is vertically arranged in separation tank 1, with a gap between it and the bottom wall of separation tank 1 to facilitate liquid entry into the second pipe 17. One end of the first pipe 16 is connected to the drain pipe 13, and the other end passes through the overflow port and connects to the second pipe 17. It is understood that the second pipe 17 has openings at both its upper and lower ends. Liquid in separation tank 1 enters the second pipe 17 through the lower opening. When the liquid level in the second pipe 17 reaches the connection point between the first pipe 16 and the second pipe 17, the liquid enters the first pipe 16 and is discharged, thus preventing liquid overflow due to excessive liquid level in separation tank 1. It should be noted that the second pipe 17 has a certain length. Since the animal and vegetable oils are mainly concentrated in the upper layer of the separation tank 1 and the water is mainly located in the lower layer of the separation tank 1, the liquid entering the second pipe 17 from the lower end opening is mainly water, rather than animal and vegetable oils.

[0045] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A solid-liquid-oil separation device for kitchen waste, characterized in that, include: Separation tank (1) is used to contain the mixture; A filter basket (2) is at least partially disposed in the separation tank (1), the filter basket (2) being used for solid-liquid separation; An oil-water separation mechanism is provided in a separation tank (1). The oil-water separation mechanism includes an oil scraping component (3) and an oil collection tank (7). The oil scraping component (3) is used to allow the animal and vegetable oils in the mixture in the separation tank (1) to enter the oil collection tank (7). A heating mechanism is used to heat the mixture in the separation tank (1).

2. The solid-liquid-oil separation device for kitchen waste according to claim 1, characterized in that, The oil scraping assembly (3) includes a rotating drum assembly and a scraper (6). The rotating drum assembly is rotatably disposed in the separation tank (1). One side of the scraper (6) is in contact with the rotating drum assembly, and the other side of the scraper (6) is in contact with the oil collection tank (7).

3. The solid-liquid-oil separation device for kitchen waste according to claim 2, characterized in that, The rotating cylinder assembly includes a rotating shaft and a rotating cylinder (5) disposed outside the rotating shaft. The rotating shaft is connected to a drive assembly (8) for driving its rotation, and the rotating cylinder (5) rotates together with the rotating shaft.

4. The solid-liquid-oil separation device for kitchen waste according to claim 3, characterized in that, The oil collection tank (7) includes a bottom plate (21) and a first side plate (22) and a second side plate (23) arranged opposite to each other. The first side plate (22) is vertically arranged, and the second side plate (23) is inclined. One side of the scraper (6) is in contact with the rotating cylinder (5), and the other side of the scraper (6) is in contact with the second side plate (23).

5. The solid-liquid-oil separation device for kitchen waste according to claim 4, characterized in that, An oil collection tank (10) is provided below the separation tank (1), and an oil outlet (11) is provided on the bottom plate (21). The oil outlet (11) is connected to an oil drain pipe (18), and the other end of the oil drain pipe (18) is connected to the oil collection tank (10).

6. The solid-liquid-oil separation device for kitchen waste according to claim 1, characterized in that, The heating mechanism is located outside the separation tank (1), and the separation tank (1) is also equipped with a temperature measuring component (20) for measuring the liquid temperature.

7. The solid-liquid-oil separation device for kitchen waste according to claim 1, characterized in that, A float (19) is provided in the separation tank (1), and the float (19) is used to indicate the liquid level in the separation tank (1).

8. The solid-liquid-oil separation device for kitchen waste according to claim 1, characterized in that, The bottom wall of the separation tank (1) is provided with an air vent (12), the air vent (12) is connected to an air vent pipe (13), and a switch valve (14) is provided on the air vent pipe (13). The switch valve (14) is used to control the opening and closing of the air vent pipe (13).

9. The solid-liquid-oil separation device for kitchen waste according to claim 8, characterized in that, It also includes an overflow assembly, which includes an overflow pipe (15) and an overflow port located on the side wall of the separation tank (1). One end of the overflow pipe (15) is connected to the drain pipe (13), and the other end is connected to the overflow port.

10. The solid-liquid-oil separation device for kitchen waste according to claim 9, characterized in that, The overflow pipe (15) includes a first pipe (16) and a second pipe (17) that are interconnected. The second pipe (17) is vertically arranged in the separation tank (1). There is a gap between the second pipe (17) and the bottom wall of the separation tank (1). One end of the first pipe (16) is connected to the drain pipe (13), and the other end passes through the overflow port and is connected to the second pipe (17).

Images