Solid-liquid separation device for kitchen waste oil

By using a combination of an electric fan and an electric heating element, the problem of solidification of waste cooking oil at low temperatures is solved, achieving efficient separation of waste oil from food residue and reducing waste.

CN224113409UActive Publication Date: 2026-04-14HUNAN GENGCHEN BIOTECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-30
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Existing kitchen waste oil separation devices are prone to solidification at low temperatures, resulting in incomplete separation of waste oil from food residue, causing waste, and the separation efficiency is low.

Method used

The system uses an electric fan and heating element to melt solidified waste oil, and achieves long-term separation control through a stirring block and observation window. It also utilizes a sealing plate and tension spring structure to ensure airtightness, thus achieving complete separation of waste oil from food residue.

Benefits of technology

It improves the separation efficiency of waste oil and food residue, reduces waste oil waste, and achieves a more thorough separation effect.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The solid-liquid separation device comprises a separation bin, a sealing insertion plate is connected to the lower portion of the left side of the separation bin in an inserted mode, a feeding pipe is fixedly connected to the upper portion of the left side of the separation bin, an air outlet pipe is fixedly connected to the upper portion of the right side of the separation bin, and an oil discharging opening is formed in the bottom of the separation bin. A liquid storage tank is fixedly connected to the bottom of the separation bin, a liquid outlet valve is arranged on the right side of the liquid storage tank, a collecting tank is slidably connected to the left side of the liquid storage tank, a support is fixedly connected to the upper portion of the separation bin, a fixing plate is fixedly connected to the upper portion of the support, and a driving motor is fixedly connected to the upper portion of the fixing plate. Through the structure, waste grease solidified due to low temperature can be melted; and separation can be carried out for a longer time according to the fusion state of the waste oil and food residues. The waste oil and the solid food residues can be better separated under the combination of the two, and waste of the waste oil is avoided.
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Description

Technical Field

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

[0002] The main purpose of recycling and utilizing kitchen waste oil is to achieve resource recycling and sustainable development. Specifically, this includes preventing waste oil from polluting water bodies and soil, and clogging pipes; converting it into clean energy sources such as biodiesel and biogas; creating economic value; forming a recycling industry chain; and reducing energy costs. Through scientific recycling, kitchen waste oil can be transformed from waste into valuable resources, achieving ecological, economic, and social benefits.

[0003] 1. During the separation process of waste oil and food residue in winter, due to the low-temperature solidification of oil, the waste oil easily solidifies and adheres to the food residue. Existing separation devices cannot melt the oil during the separation process, thus causing the waste oil to adhere to the food residue. The solid waste oil is separated out in solid form by the separation device, which does not achieve a good separation effect between waste oil and food residue and causes a certain degree of waste oil.

[0004] 2. In the existing technology, during the separation process of food residue and waste oil mixture, the state of fusion between waste oil and food residue, i.e., the state of oil distribution on different layers of food residue, means that the short separation process during the separation of waste oil and food residue cannot allow the oil to flow better from the upper layer to the lower layer of food residue. In other words, the short separation process cannot separate most of the oil from the top of the food residue. Similarly, the food residue contaminated with waste oil is separated by the separation device in solid form, which also leads to the waste of waste oil. Utility Model Content

[0005] The purpose of this invention is to provide a solid-liquid separation device for waste cooking oil, which can heat the waste residue during the separation process to melt the waste oil that has solidified due to low temperature; and can perform separation for a longer period of time based on the fused state of the waste oil and food residue. The combination of these two methods can achieve better separation of waste oil and solid food residue, avoiding waste oil waste.

[0006] To achieve the above objectives, a solid-liquid separation device for waste cooking oil is provided, comprising a separation chamber, a sealing plate inserted into the lower left side of the separation chamber, a feed pipe fixedly connected to the upper left side of the separation chamber, an air outlet pipe fixedly connected to the upper right side of the separation chamber, an oil outlet at the bottom of the separation chamber, a liquid storage tank fixedly connected to the bottom of the separation chamber, a liquid outlet valve provided on the right side of the liquid storage tank, and a collection box slidably connected to the left side of the liquid storage tank.

[0007] A support is fixedly connected above the separation chamber, a fixing plate is fixedly connected above the support, a drive motor is fixedly connected above the fixing plate, a stirring block is fixedly connected to the output end of the drive motor, an electric fan is fixedly connected above the bottom of the support, and an electric heating element is fixedly connected below the electric fan.

[0008] According to the aforementioned solid-liquid separation device for waste cooking oil, an observation window is provided in front of the separation chamber, and a hook is fixedly connected to the left side of the separation chamber.

[0009] According to the aforementioned kitchen waste oil solid-liquid separation device, a tension spring is rotatably connected to the left side of the sealing plate, and the other end of the tension spring corresponds to the hook ring.

[0010] According to the aforementioned solid-liquid separation device for waste cooking oil, the bottom four corners of the storage tank are fixedly connected to support bases, and the left side of the collection tank is fixedly connected to a handle.

[0011] According to the aforementioned solid-liquid separation device for waste cooking oil, the stirring block is located inside the separation chamber, and the stirring block is rotatably connected to the separation chamber.

[0012] According to the aforementioned solid-liquid separation device for waste cooking oil, the oil outlet is located above the liquid storage tank, and the oil outlet corresponds to the liquid storage tank.

[0013] According to the aforementioned solid-liquid separation device for waste cooking oil, a slot is provided on the lower left side of the separation chamber, and the slot corresponds to the sealing plate.

[0014] According to the aforementioned solid-liquid separation device for waste cooking oil, a slot is provided on the lower left side of the storage tank, and the slot corresponds to the collection tank.

[0015] This utility model has the following beneficial effects:

[0016] 1. Compared with existing technologies, this method incorporates an electric fan, which, when powered by an operator, blows air into the separation chamber. A heating element is installed below the fan, which, when powered by an operator, heats the air. The combined action of the fan and heating element causes the hot air to circulate from top to bottom, melting the solidified waste grease during the separation process, thus achieving better separation of the waste grease.

[0017] 2. Compared with existing technologies, the addition of an observation window allows operators to monitor the separation of waste oil and food residue at any time. This enables the separation to be carried out for a longer or shorter time depending on the distribution of the waste oil and food residue. Once the separation of the debris and waste oil is observed to be complete through the observation window, the tension spring can be removed from the hook ring, and the sealing plate can be taken out to complete the more thorough separation of waste oil and food residue. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a perspective view of a solid-liquid separation device for waste cooking oil according to the present invention;

[0020] Figure 2 This is a schematic diagram showing the separation chamber and sealing plate of a solid-liquid separation device for waste cooking oil according to this utility model.

[0021] Figure 3 This is a schematic diagram showing the separation chamber and storage tank of a solid-liquid separation device for waste cooking oil according to this utility model;

[0022] Figure 4 This is a schematic diagram showing the separation of the electric fan and heating element in a solid-liquid separation device for kitchen waste oil according to this utility model.

[0023] Legend:

[0024] 1. Separation chamber; 2. Observation window; 3. Hook and ring; 4. Sealing plate; 5. Tension spring; 6. Liquid storage tank; 7. Support base; 8. Liquid outlet valve; 9. Collection box; 10. Handle; 11. Feed pipe; 12. Air outlet pipe; 13. Bracket; 14. Fixing plate; 15. Drive motor; 16. Stirring block; 17. Electric fan; 18. Electric heating element; 19. Oil outlet; 20. Slot; 21. Groove. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figure 1-4This utility model discloses a solid-liquid separation device for waste cooking oil, comprising a separation chamber 1, an observation window 2 at the front of the separation chamber 1, a hook ring 3 fixedly connected to the left side of the separation chamber 1, a sealing plate 4 inserted into the lower left side of the separation chamber 1, a tension spring 5 rotatably connected to the left side of the sealing plate 4, the other end of the tension spring 5 corresponding to the hook ring 3, a feed pipe 11 fixedly connected to the upper left side of the separation chamber 1, an air outlet 12 fixedly connected to the upper right side of the separation chamber 1, an oil outlet 19 at the bottom of the separation chamber 1, the oil outlet 19 being located above a liquid storage tank 6 and corresponding to the liquid storage tank 6, a liquid storage tank 6 fixedly connected to the bottom of the separation chamber 1, support bases 7 fixedly connected to the four corners of the bottom of the liquid storage tank 6, and an outlet on the right side of the liquid storage tank 6. A liquid valve 8 is attached to a collection tank 9 which is slidably connected to the left side of the storage tank 6. A handle 10 is fixedly connected to the left side of the collection tank 9. A bracket 13 is fixedly connected to the top of the separation chamber 1. A fixing plate 14 is fixedly connected to the top of the bracket 13. A drive motor 15 is fixedly connected to the top of the fixing plate 14. A stirring block 16 is fixedly connected to the output end of the drive motor 15. The stirring block 16 is located inside the separation chamber 1 and is rotatably connected to the separation chamber 1. An electric fan 17 is fixedly connected to the top of the bottom of the bracket 13. An electric heating tube 18 is fixedly connected to the bottom of the electric fan 17. A slot 20 is opened on the lower left side of the separation chamber 1. The slot 20 corresponds to the sealing plate 4. A groove 21 is opened on the lower left side of the storage tank 6. The groove 21 corresponds to the collection tank 9.

[0027] The aforementioned structure incorporates a sealing plate 4 made of stainless steel, located within the separation chamber 1. The outer surface of the sealing plate 4 is uniformly coated with a silicone rubber layer. Due to its unique silicon-oxygen bond structure, silicone rubber exhibits excellent sealing and heat resistance properties: Sealing: It possesses high elasticity and low compression set, allowing it to tightly conform to irregular surfaces and effectively prevent gas or liquid leakage, suitable for both dynamic and static sealing scenarios. Heat Resistance: It can withstand long-term temperatures from -60℃ to 200℃, remaining flexible, non-brittle, and non-decomposing even at high temperatures, far exceeding ordinary rubber. Its molecular chain thermal stability is excellent, with strong oxidation and aging resistance, making it suitable for high-temperature, high-frequency environments. Therefore, using silicone rubber as the sealing layer between the sealing plate 4 and the separation chamber 1 allows for a good seal while also being more resistant to the hot air generated by both the electric fan 17 and the heating element 18.

[0028] By providing a tension spring 5, which corresponds to the hook ring 3, the operator inserts the sealing insert plate 4 into the separation chamber 1 and then hangs the tension spring 5 above the hook ring 3. At this time, the tension spring 5 is stretched, and through the rebound of the tension spring 5, the sealing insert plate 4 and the separation chamber 1 come into close contact, thereby achieving a tight fit between the sealing insert plate 4 and the separation chamber 1 and sealing the sealing insert plate 4 and the separation chamber 1.

[0029] By setting a fixing plate 14, the distance between the fixing plate 14 and the electric fan 17 and the electric heating tube 18 is relatively far, and the drive motor 15 is fixedly connected above the fixing plate 14, so that the distance between the drive motor 15 and the electric heating tube 18 is relatively far, the operation of the electric heating tube 18 will not affect the operation of the drive motor 15 during the operation process.

[0030] An electric fan 17 is installed so that when the operator powers on the electric fan 17, the electric fan 17 blows air into the separation chamber 1. An electric heating tube 18 is installed below the electric fan 17 so that when the operator powers on the electric heating tube 18, the electric heating tube 18 heats itself. With the cooperation of the electric fan 17 and the electric heating tube 18, hot air is blown from top to bottom. Under the action of the hot air, the solidified waste oil can be melted at the same time during the separation process.

[0031] By providing an exhaust pipe 12, hot air fills the interior of the separation chamber 1 and the liquid storage tank 6, and the remaining gas is discharged from the exhaust pipe 12, thus preventing a large amount of air from remaining inside the separation chamber 1 and the liquid storage tank 6.

[0032] By setting up an observation window 2, operators can observe the separation between waste oil and food residue at any time, thereby enabling longer separation time based on the distribution of waste oil and food residue.

[0033] Working principle: In this type of kitchen waste oil solid-liquid separation device, the mixture of waste oil and food residue is first added into the separation chamber 1 through the feed pipe 11. The drive motor 15 is turned on, and the switch between the electric fan 17 and the heating element 18 is turned on to heat the mixture with hot air, thus melting the solidified waste oil. Under the combined action of the stirring block 16 and the separation chamber 1, the liquefied waste oil flows into the storage tank 6 through the oil outlet 19. The operator can discharge the waste oil by opening the liquid outlet valve 8. After the waste oil and food residue are separated, the tension spring 5 is separated from the hook ring 3, and the sealing plate 4 is pulled out from the separation chamber 1. Under the action of the stirring block 16 and the separation chamber 1 again, the solid matter falls into the collection box 9. After collection, the operator can remove the collection box 9 to centrally process the solid matter.

[0034] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A solid-liquid separation device for kitchen waste oil, characterized by comprising: The separation chamber (1) includes a sealing plate (4) inserted into the lower left side of the separation chamber (1), a feed pipe (11) fixedly connected to the upper left side of the separation chamber (1), an air outlet pipe (12) fixedly connected to the upper right side of the separation chamber (1), an oil outlet (19) opened at the bottom of the separation chamber (1), a liquid storage tank (6) fixedly connected to the bottom of the separation chamber (1), an outlet valve (8) provided on the right side of the liquid storage tank (6), and a collection box (9) slidably connected to the left side of the liquid storage tank (6). A bracket (13) is fixedly connected above the separation chamber (1), a fixing plate (14) is fixedly connected above the bracket (13), a drive motor (15) is fixedly connected above the fixing plate (14), a stirring block (16) is fixedly connected to the output end of the drive motor (15), an electric fan (17) is fixedly connected above the bottom of the bracket (13), and an electric heating tube (18) is fixedly connected below the electric fan (17).

2. The solid-liquid separation device for kitchen waste oil according to claim 1, characterized in that, An observation window (2) is provided in front of the separation chamber (1), and a hook (3) is fixedly connected to the left side of the separation chamber (1).

3. The solid-liquid separation device for waste cooking oil according to claim 1, characterized in that, A tension spring (5) is rotatably connected to the left side of the sealing plate (4), and the other end of the tension spring (5) corresponds to the hook (3).

4. The solid-liquid separation device for waste cooking oil according to claim 1, characterized in that, The bottom four corners of the liquid storage tank (6) are fixedly connected to support bases (7), and the left side of the collection box (9) is fixedly connected to a handle (10).

5. The solid-liquid separation device for waste cooking oil according to claim 1, characterized in that, The stirring block (16) is located inside the separation chamber (1), and the stirring block (16) is rotatably connected to the separation chamber (1).

6. The solid-liquid separation device for waste cooking oil according to claim 1, characterized in that, The oil outlet (19) is located above the liquid storage tank (6), and the oil outlet (19) corresponds to the liquid storage tank (6).

7. The solid-liquid separation device for waste cooking oil according to claim 1, characterized in that, A slot (20) is provided on the lower left side of the separation chamber (1), and the slot (20) corresponds to the sealing insert (4).

8. The solid-liquid separation device for waste cooking oil according to claim 1, characterized in that, A slot (21) is provided on the lower left side of the liquid storage tank (6), and the slot (21) corresponds to the collection tank (9).