Special storage container for waste oil

Abstract

The present application relates to kitchen wastewater treatment technical field, disclose a kind of special storage container for waste oil, including storage tank, oil-water separation tank and the solid-liquid separation mechanism being installed in oil-water separation tank;Oil-water separation tank is connected in the side of storage tank;Oil-water separation tank is also provided with oil-water separation mechanism, and oil-water separation mechanism includes water filter membrane of hydrophilic oleophobic, installation frame of installing water filter membrane and the float ball being fixedly connected in the bottom of installation frame, and installation frame and the inner wall of oil-water separation tank sliding seal contact;Oil-water separation tank and the connecting wall between storage tank are provided with oil pass, and oil pass is provided with oil filter membrane of oleophilic hydrophobic in it;The lower outer wall of oil-water separation tank is provided with drain pipe, and oil-water separation tank is installed with liquid level sensor;The side wall of storage tank away from oil-water separation tank is provided with condenser for cooling in storage tank. Solve the problem that animal oil and vegetable oil in waste oil are still mixed together after the oil-water separation of existing storage container.

Description

Technical Field

[0001] This invention belongs to the field of kitchen wastewater treatment technology, specifically relating to a special storage container for waste oil. Background Technology

[0002] The treatment of waste cooking oil is an important issue in the fields of environmental protection and resource recycling. Waste cooking oil contains a large amount of animal and vegetable oils. If these oils are not effectively separated, it will be difficult to achieve resource utilization of the waste oil, and it will also cause environmental pollution.

[0003] Existing grease storage containers typically only perform two steps: solid-liquid separation and oil-water separation. Solid-liquid separation separates solid impurities from liquid grease in waste cooking oil, while oil-water separation separates grease from the water phase. Since subsequent recycling of waste oil requires further separation of animal and vegetable oils, existing oil-water separation methods leave the animal and vegetable oils mixed together, resulting in low waste oil treatment efficiency and resource utilization levels.

[0004] In view of this, the inventor conducted in-depth research on the aforementioned deficiencies in the prior art, which led to the creation of this case. Summary of the Invention

[0005] The purpose of this invention is to provide a special storage container for waste oil, which solves the problem that in existing storage containers, animal oil and vegetable oil in waste oil are still mixed together after oil-water separation, resulting in low waste oil treatment efficiency and resource utilization level.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0007] A waste oil storage container includes a storage tank, an oil-water separator, and a solid-liquid separation mechanism installed inside the oil-water separator. The oil-water separator is connected to one side of the storage tank. The solid-liquid separation mechanism is installed at the opening of the oil-water separator. The oil-water separator also includes an oil-water separation mechanism, which comprises a hydrophilic and oleophobic filter membrane, a mounting frame for mounting the filter membrane, and a float ball fixedly connected to the bottom of the mounting frame. The mounting frame is in sliding and sealing contact with the inner wall of the oil-water separator. An oil passage is provided between the connecting wall of the oil-water separator and the storage tank, and an oleophilic and hydrophobic oil filter membrane is provided inside the oil passage. A drain pipe is provided on the lower outer wall of the oil-water separator, and a solenoid valve is provided inside the drain pipe. A liquid level sensor is installed in the oil-water separator. A condenser for cooling the inside of the storage tank is installed on the side wall away from the oil-water separator. A first cover is provided on the storage tank, and a second cover is provided on the oil-water separator.

[0008] Furthermore, the storage box has a lifting plate at its inner bottom and a lifting rod at its top. The lifting plate slides in contact with the inner wall of the storage box. Animal oil solidifies at low temperatures. When it is necessary to transfer the animal oil, the lifting plate can be lifted upwards to remove the animal oil from the storage box.

[0009] Furthermore, a support mesh is also provided on the mounting frame, located below the filter membrane; a limiting groove is formed on the inner wall of the oil-water separator, and a limiting slider that cooperates with the limiting groove is provided on the outer side of the mounting frame. The limiting slider and the limiting groove ensure that the mounting frame remains stable during movement.

[0010] Furthermore, the solid-liquid separation mechanism includes a centrifuge cylinder, a rotating disk supporting the centrifuge cylinder, and a drive assembly for driving the rotating disk to rotate. Several first filter holes are formed on the side and bottom walls of the centrifuge cylinder. An annular mounting wall is formed at the opening of the oil-water separation tank, and a rotating cavity for mounting the rotating disk is formed on the mounting wall. The longitudinal section of the rotating cavity is "L"-shaped. The rotating disk has a limiting ring within the rotating cavity and a support plate extending to the outside of the mounting wall. The centrifuge cylinder is mounted on the support plate. By using the drive assembly to drive the centrifuge cylinder to rotate, oil and water can be quickly separated from food residue, improving the efficiency of solid-liquid separation.

[0011] Furthermore, the drive assembly includes a drive wheel, two extrusion wheels, a drive motor, a first pulley, a second pulley, and a timing belt; the drive wheel and the two extrusion wheels are respectively distributed at 120°, and the drive wheel and the two extrusion wheels are in frictional contact with the limiting ring of the rotating disk; the first pulley is coaxially and fixedly connected to the drive wheel, and the outer wall of the oil-water separator is provided with a mounting shell for mounting the second pulley, the drive motor is fixedly installed at the bottom of the mounting shell, the second pulley is rotatably installed inside the mounting shell, and the output shaft of the drive motor is drively connected to the second pulley; the timing belt is sleeved on the first pulley and the second pulley.

[0012] Furthermore, the second cover is equipped with a spray plate with several spray nozzles facing the centrifuge cylinder; the top of the second cover is equipped with a water inlet hose communicating with the spray plate. By spraying the inside of the centrifuge cylinder, the grease on the surface of the residue can be washed away more quickly during centrifugation.

[0013] Furthermore, the solid-liquid separation mechanism also includes a protective cylinder sleeved around the centrifuge cylinder; the upper part of the protective cylinder is cylindrical, and the lower part is an inverted cone, with several second filter holes formed at the bottom of the protective cylinder; the outer edge of the protective cylinder is connected to the outer extension of the centrifuge cylinder by screws; multiple insertion strips are formed on the bottom surface of the outer extension of the protective cylinder, and insertion grooves that mate with the insertion strips are formed on the support plate. Using the protective cylinder, the separated oil and water can be collected and discharged uniformly downwards during centrifugal separation, preventing oil and water from splashing onto the inner wall of the oil-water separator.

[0014] Furthermore, a guide plate is provided on the inner wall of the oil-water separator. A gap exists between the end face of the guide plate away from the storage tank and the inner wall of the oil-water separator away from the storage tank, allowing waste liquid to pass through. The height of the guide plate is higher than the height of the oil outlet. The liquid level sensor is located at the bottom of the guide plate. The guide plate allows the separated oil and water to flow from one side into the lower oil and water, minimizing the re-mixing of the already separated oil and water at the bottom.

[0015] With the above structure, the waste oil storage container of the present invention, compared with the prior art, firstly separates food residue from oil and water through a solid-liquid separation mechanism, and then separates oil and water through an oil-water separation mechanism. The separated waste oil enters the storage tank. A condenser is provided on one side of the storage tank to preserve the waste oil in the storage tank at low temperature. At low temperature, animal oil will solidify and settle, while vegetable oil will float, thereby achieving the separation of vegetable oil and animal oil. Furthermore, the low temperature can prevent the oil from deteriorating. Attached Figure Description

[0016] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 for Figure 1 A cross-sectional schematic diagram;

[0019] Figure 3 for Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0020] Figure 4 for Figure 2 A magnified schematic diagram of the local structure at point B;

[0021] Figure 5 This is a schematic diagram of the oil-water separation mechanism in this invention;

[0022] Figure 6 for Figure 5A structural diagram from another angle;

[0023] Figure 7 A schematic diagram of the solid-liquid separation mechanism in this invention;

[0024] Figure 8 for Figure 7 A schematic diagram of the decomposition process;

[0025] Figure 9 This is a schematic diagram of the protective cylinder in this invention;

[0026] Figure 10 This is a schematic diagram of the rotating disk in the present invention;

[0027] Figure 11 This is a schematic diagram of the structure of the second box cover in this invention.

[0028] The main component symbols are explained as follows: Storage box 1, First box cover 11, Oil-water separator 2, Oil outlet 21, Drain pipe 22, Second box cover 23, Spray plate 231, Spray nozzle 2311, Water inlet hose 232, Mounting wall 24, Rotating cavity 241, Mounting shell 25, Limiting groove 26, Guide plate 27, Solid-liquid separation mechanism 3, Centrifuge cylinder 31, First filter hole 311, Rotating disc 32, Limiting ring 321, Bearing plate 322, Insertion groove 322 1. Drive assembly 33, drive wheel 331, extrusion wheel 332, drive motor 333, first pulley 334, second pulley 335, synchronous belt 336, protective cylinder 34, second filter hole 341, plug strip 342, screw 35, oil-water separation mechanism 4, water filter membrane 41, mounting frame 42, support net 421, limit slider 422, float ball 43, oil filter membrane 5, solenoid valve 6, liquid level sensor 7, condenser 8, lifting plate 9, lifting rod 91. Detailed Implementation

[0029] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. In addition, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0030] like Figures 1 to 11As shown, this invention relates to a special storage container for waste oil, comprising a storage tank 1, an oil-water separator 2, and a solid-liquid separation mechanism 3 installed inside the oil-water separator 2. The storage tank 1 has a first cover 11, and the oil-water separator 2 has a second cover 23. The volume of the oil-water separator 2 is smaller than that of the storage tank 1, and the volume of the storage tank 1 can be 4-5 times the volume of the oil-water separator 2. The oil-water separator 2 is integrated with the storage tank 1 and is connected to one side of the storage tank 1. The solid-liquid separation mechanism 3 is installed at the opening of the oil-water separator 2. The oil-water separator 2 also contains an oil-water separation mechanism 4 for oil-water separation. Mechanism 4 includes a hydrophilic and oleophobic filter membrane 41, a mounting frame 42 for mounting the filter membrane 41, and a float 43 fixedly connected to the bottom of the mounting frame 42. The mounting frame 42 is in sliding and sealed contact with the inner wall of the oil-water separator 2. An oil passage 21 is provided between the connecting wall of the oil-water separator 2 and the storage tank 1, and an oleophilic and hydrophobic oil filter membrane 5 is provided in the oil passage 21. Specifically, the filter membrane 41 is a PVDF membrane, which allows water molecules to pass through while preventing oil molecules from penetrating, and the oil removal rate can reach more than 99%. The oil filter membrane 5 is a superhydrophobic and superoleophilic mesh membrane, which only allows oil molecules to pass through and prevents water molecules from passing through. Under the action of the filter membrane 41, the water seeps downwards, isolating the grease above the filter membrane 41. As more and more water accumulates below the filter membrane 41, the float ball 43 pushes the mounting frame 42 upwards, thus pushing the separated waste oil upwards as well. When the waste oil level reaches the oil outlet 21, the waste oil can enter the storage tank 1 through the oil outlet 21. At this time, under the action of the oil filter membrane 5, water is prevented from entering the storage tank 1 along with the waste oil. In addition, a drain pipe 22 is provided on the lower outer wall of the oil-water separation tank 2. The drain pipe 22 is located below the oil-water separation mechanism 4. A solenoid valve 6 is installed inside the drain pipe 22 to separate the oil and water. Separation tank 2 is equipped with a liquid level sensor 7. When the liquid level sensor 7 detects that the liquid level has reached a certain height, it controls the solenoid valve 6 to open, allowing water to be discharged from the drain pipe 22. A condenser 8 is installed on the side wall of storage tank 1 away from the oil-water separation tank 2 to cool the contents of storage tank 1. The condenser 8 cools the waste oil entering storage tank 1. Since animal oil usually has a higher melting point and vegetable oil has a lower melting point, animal oil will solidify at low temperatures. Because animal oil is usually denser than vegetable oil, the solidified animal oil will settle to the bottom, thus achieving separation of animal oil and vegetable oil. In addition, the temperature inside storage tank 1 should be controlled between 5℃ and 10℃ to achieve low-temperature refrigeration of the oils and ensure that animal oil solidifies while vegetable oil does not.

[0031] Preferably, the storage box 1 has a lifting plate 9 at its bottom and a lifting rod 91 at its top. The lifting plate 9 slides in contact with the inner wall of the storage box 1. Animal oil solidifies at low temperatures, while vegetable oil remains liquid. When waste oil needs to be transferred, the vegetable oil can be extracted through a pipe first, and then the lifting plate 9 can be lifted upwards to remove the animal oil from the storage box 1.

[0032] To increase the support force of the mounting frame 42 on the filter membrane 41, a support net 421 is also provided on the mounting frame 42, and the support net 421 is located below the filter membrane 41; in addition, to make the mounting frame 42 move more smoothly up and down, a limiting groove 26 is formed on the inner wall of the oil-water separator 2, and a limiting slider 422 that cooperates with the limiting groove 26 is provided on the outer side of the mounting frame 42.

[0033] In this embodiment, the solid-liquid separation mechanism 3 includes a centrifuge cylinder 31, a rotating disk 32 supporting the centrifuge cylinder 31, and a drive assembly 33 for driving the rotating disk 32 to rotate; a plurality of first filter holes 311 are formed on the side wall and bottom wall of the centrifuge cylinder 31; an annular mounting wall 24 is formed at the opening of the oil-water separation tank 2; a rotating cavity 241 for mounting the rotating disk 32 is formed on the mounting wall 24; the longitudinal section of the rotating cavity 241 is "L" shaped; the rotating disk 32 has a limiting ring 321 located in the rotating cavity 241 and a support plate 322 extending to the outside of the mounting wall 24; the centrifuge cylinder 31 is mounted on the support plate 322. The drive assembly 33 includes a drive wheel 331, two extrusion wheels 332, a drive motor 333, a first pulley 334, a second pulley 335, and a synchronous belt 336. The drive wheel 331 and the two extrusion wheels 332 are respectively distributed at 120°, and the driving wheel 331 and the two extrusion wheels 332 are in frictional contact with the limiting ring 321 of the rotating disk 32. The first pulley 334 is coaxially and fixedly connected to the drive wheel 331. The outer wall of the oil-water separator 2 is provided with a mounting shell 25 for mounting the second pulley 335. The drive motor 333 is fixedly installed at the bottom of the mounting shell 25, and the second pulley 335 is rotatably installed inside the mounting shell 25. The output shaft of the drive motor 333 is connected to the second pulley 335 for transmission. The synchronous belt 336 is sleeved on the first pulley 334 and the second pulley 335. Specifically, both the drive wheel 331 and the extrusion wheel 332 have rubber layers attached to their circumferential surfaces, which can increase the coefficient of friction with the rotating disk 32. In use, the drive wheel 331 is driven to rotate by the motor, which, in conjunction with the extrusion wheel 332, can drive the rotating disk 32 to rotate, thereby driving the centrifuge cylinder 31 to rotate rapidly, quickly throwing out the oil and water adhering to the residue, thus achieving solid-liquid separation.

[0034] To more quickly wash away the grease from the surface of the residue, a spray plate 231 is provided on the second tank cover 23, with several spray nozzles 2311 facing the centrifuge cylinder 31. A water inlet hose 232, connected to the spray plate 231, is located at the top of the second tank cover 23, and a water pump is installed at the other end of the hose 232. Furthermore, rinsing increases the water content, ensuring that the water content entering the oil-water separator 2 is greater than the oil content. This makes it easier for the float 43 to push the mounting frame 42 upwards, allowing the waste oil to enter the storage tank 1 more quickly from the oil outlet 21.

[0035] In addition, to prevent oil and water ejected from the centrifuge cylinder 31 from splashing onto the inner wall, the solid-liquid separation mechanism 3 also includes a protective cylinder 34 fitted around the centrifuge cylinder 31. The upper part of the protective cylinder 34 is cylindrical, and the lower part is an inverted cone. Several second filter holes 341 are formed at the bottom of the protective cylinder 34. The diameter of the second filter holes 341 is smaller than that of the first filter holes 311, allowing for further filtration and preventing food residue from entering the oil-water separation tank 2. The outer edge of the protective cylinder 34 is connected to the outer extension of the centrifuge cylinder 31 by screws 35. Multiple insertion strips 342 are formed on the bottom surface of the outer extension of the protective cylinder 34, and insertion grooves 3221 that mate with the insertion strips 342 are formed on the support plate 322. Using the protective cylinder 34, the separated oil and water can be prevented from pooling and being discharged downwards during centrifugal separation. The protective cylinder 34 is inserted into the support plate 322, which makes it easy to remove the entire centrifuge cylinder 31 and pour out the separated residue. The protective cylinder 34 and the centrifuge cylinder 31 are connected by screws 35, which also makes it easy to disassemble and clean.

[0036] Because the liquid flow rate is relatively large after flushing and converging through the protective cylinder 34 during solid-liquid separation, a guide plate 27 is provided on the inner wall of the oil-water separator 2. The three end faces of the guide plate 27 are connected to the three inner walls of the oil-water separator 2. A gap exists between the end face of the guide plate 27 away from the storage tank 1 and the inner wall of the oil-water separator 2 away from the storage tank 1, allowing waste liquid to pass through. The height of the guide plate 27 is higher than the height of the oil outlet 21. The liquid level sensor 7 is located at the bottom of the guide plate 27. The guide plate 27 allows the separated oil and water to flow from one side into the lower oil and water, avoiding direct impact on the already separated waste oil and preventing excessive remixing of oil and water.

[0037] In this embodiment, the inner walls of the baffle plate 27, the oil-water separator 2, and the storage tank 1 are all coated with a hydrophobic and oleophobic coating, which can prevent grease and water from adhering to them and improve the self-cleaning effect.

[0038] The method of using this invention is as follows: First, the solid-liquid separation mechanism 3 is used to separate the oil and water in the food residue. During the solid-liquid separation, the residue is rinsed by the spray plate 231 to quickly wash the oil down and increase the water ratio in the oil-water separation tank 2. The oil and water entering the oil-water separation tank 2 are first filtered by the water filter membrane 41, so that more and more water is below the water filter membrane 41. Under the action of the float ball 43, the mounting frame 42 is pushed upward, thereby pushing the oil upward until the oil height reaches the height of the oil outlet 21. The oil enters the storage tank 1 from the oil outlet 21. The condenser 8 is used to keep the temperature of the storage tank 1 between 5-10°C, so that the animal oil can quickly solidify and settle at the bottom, thereby realizing the separation of animal oil and vegetable oil.

[0039] The above provides a detailed description of the waste oil storage container provided by the present invention. The specific embodiments are described only to aid in understanding the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A special storage container for waste oil, characterized in that: The system includes a storage tank (1), an oil-water separator (2), and a solid-liquid separation mechanism (3) installed inside the oil-water separator (2). The oil-water separator (2) is connected to one side of the storage tank (1). The solid-liquid separation mechanism (3) is installed at the opening of the oil-water separator (2). The oil-water separator (2) is also equipped with an oil-water separation mechanism (4). The oil-water separation mechanism (4) includes a hydrophilic and oleophobic filter membrane (41), a mounting frame (42) for mounting the filter membrane (41), and a float (43) fixedly connected to the bottom of the mounting frame (42). The mounting frame (42) is in sliding and sealing contact with the inner wall of the oil-water separator (2). An oil passage (21) is provided between the connecting wall of the oil-water separator (2) and the storage tank (1), and an oil-sensitive and hydrophobic filter membrane (5) is provided in the oil passage (21); a drain pipe (22) is provided on the lower outer wall of the oil-water separator (2), and a solenoid valve (6) is provided in the drain pipe (22); a liquid level sensor (7) is installed in the oil-water separator (2); a condenser (8) for cooling the storage tank (1) is installed on the side wall away from the oil-water separator (2); a first cover (11) is provided on the storage tank (1), and a second cover (23) is provided on the oil-water separator (2).

2. The waste oil storage container according to claim 1, characterized in that: The storage box (1) has a lifting plate (9) at its bottom and a lifting rod (91) at its top. The lifting plate (9) slides in contact with the inner wall of the storage box (1).

3. The waste oil storage container according to claim 2, characterized in that: The mounting frame (42) is also provided with a support net (421), which is located below the filter membrane (41); a limiting groove (26) is formed on the inner wall of the oil-water separator (2), and a limiting slider (422) that cooperates with the limiting groove (26) is provided on the outer side of the mounting frame (42).

4. The waste oil storage container according to claim 1, characterized in that: The solid-liquid separation mechanism (3) includes a centrifuge cylinder (31), a rotating disk (32) supporting the centrifuge cylinder (31), and a drive assembly (33) for driving the rotating disk (32) to rotate; a plurality of first filter holes (311) are formed on the side wall and bottom wall of the centrifuge cylinder (31); an annular mounting wall (24) is formed at the opening of the oil-water separation tank (2), and a rotating cavity (241) for mounting the rotating disk (32) is formed on the mounting wall (24). The longitudinal section of the rotating cavity (241) is "L" shaped. The rotating disk (32) has a limiting ring (321) inside the rotating cavity (241) and a support plate (322) extending to the outside of the mounting wall (24). The centrifuge cylinder (31) is mounted on the support plate (322).

5. The waste oil storage container according to claim 4, characterized in that: The drive assembly (33) includes a drive wheel (331), two extrusion wheels (332), a drive motor (333), a first pulley (334), a second pulley (335), and a synchronous belt (336); the drive wheel (331) and the two extrusion wheels (332) are respectively distributed at 120°, and the drive wheel (331) and the two extrusion wheels (332) are in frictional contact with the limiting ring (321) of the rotating disk (32); the first pulley (334) and the drive wheel (331) are in frictional contact with each other. The oil-water separator (2) is coaxially fixedly connected. The outer wall of the oil-water separator (2) is provided with a mounting shell (25) for mounting the second pulley (335). The drive motor (333) is fixedly installed at the bottom of the mounting shell (25). The second pulley (335) is rotatably installed inside the mounting shell (25). The output shaft of the drive motor (333) is connected to the second pulley (335) for transmission. The synchronous belt (336) is sleeved on the first pulley (334) and the second pulley (335).

6. The waste oil storage container according to claim 4, characterized in that: The second box cover (23) is provided with a spray plate (231), and the spray plate (231) is provided with a plurality of spray nozzles (2311) facing the centrifuge cylinder (31); the top of the second box cover (23) is provided with a water inlet hose (232) communicating with the spray plate (231).

7. The waste oil storage container according to claim 6, characterized in that: The solid-liquid separation mechanism (3) further includes a protective cylinder (34) sleeved on the outside of the centrifuge cylinder (31); the upper part of the protective cylinder (34) is cylindrical and the lower part is an inverted cone, and a number of second filter holes (341) are formed at the bottom of the protective cylinder (34); the outer edge of the protective cylinder (34) is connected to the outer extension of the centrifuge cylinder (31) by screws (35); a number of insertion strips (342) are formed on the bottom surface of the outer extension of the protective cylinder (34), and insertion grooves (3221) that cooperate with the insertion strips (342) are formed on the support plate (322).

8. The waste oil storage container according to claim 7, characterized in that: The inner wall of the oil-water separator (2) is provided with a guide plate (27). There is a gap between the end face of the guide plate (27) away from the storage tank (1) and the inner wall of the oil-water separator (2) away from the storage tank (1) for waste liquid to pass through. The height of the guide plate (27) is higher than the height of the oil outlet (21). The liquid level sensor (7) is set at the bottom of the guide plate (27).

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