An oil-water separator

By using a multi-pipeline design and a heating and stirring device for the oil collection tank assembly, the problem of solid impurity precipitation in the oil-water separator was solved, achieving efficient oil-water and solid-liquid separation, and reducing cleaning frequency and operating costs.

CN224337305UActive Publication Date: 2026-06-09SUZHOU AOJIA ENVIRONMENTAL TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU AOJIA ENVIRONMENTAL TECH CO LTD
Filing Date
2025-06-11
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

When treating oily wastewater from restaurants, existing oil-water separators suffer from reduced separation efficiency due to the precipitation of solid impurities, requiring additional cleaning and impacting equipment efficiency and cost.

Method used

The system employs a multi-pipeline design and an oil collection tank assembly, combined with heating and stirring devices. Different waste liquids are treated through the first and second water inlets, while solid waste is filtered by the distribution box assembly. The oil collection tank assembly heats and stirs the grease, thereby improving separation efficiency and stability.

Benefits of technology

It improves oil-water separation efficiency, reduces the amount of solid waste entering, lowers cleaning frequency and costs, and ensures the safe and efficient operation of the equipment.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224337305U_ABST
    Figure CN224337305U_ABST
Patent Text Reader

Abstract

The utility model relates to an oil -water separator, including oil -water separation cabin, the left side and the right side of oil -water separation cabin are connected with the first inlet pipe and the second inlet pipe of oil -water separation cabin intercommunication, the first inlet pipe is linked together with the distribution box subassembly intercommunication, the second inlet pipe is linked together with exhaust device intercommunication, the middle place of oil -water separation cabin is connected with the oil collection cabin subassembly of oil -water separation cabin intercommunication, the upper end of oil collection cabin subassembly is linked together with exhaust device intercommunication, the control box for controlling distribution box subassembly, oil collection cabin subassembly and exhaust device is connected on oil -water separation cabin. The utility model can improve the efficiency of oil -water separation.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to an oil-water separator. Background Technology

[0002] As people's living standards improve, more and more people are dining out. However, leftover food from restaurants contains a significant amount of waste oil, making the treatment of oily wastewater a major problem. Currently, oil-water separators are generally used to separate the oil and water.

[0003] In the oil-water separation process, the oil-water mixture enters the chamber through the inlet. After being separated by a baffle, the grease floats on the water surface, while the water passes through the bottom of the baffle and flows out from the outlet below. In actual use, solid impurities carried in the oil and water will settle at the bottom of the oil-water separator. This results in solid residue, requiring additional steps to remove the solids, which may severely affect the efficiency of oil-water separation.

[0004] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a new type of oil-water separator with greater industrial application value. Utility Model Content

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is to provide an oil-water separator.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An oil-water separator includes an oil-water separation chamber. A first water inlet pipe and a second water inlet pipe, which are connected to the left and right sides of the oil-water separation chamber, respectively, are connected to the oil-water separation chamber. The first water inlet pipe is connected to a material distribution box assembly, and the second water inlet pipe is connected to an exhaust device. An oil collection tank assembly, which is connected to the oil-water separation chamber, is located in the middle of the oil-water separation chamber. The upper end of the oil collection tank assembly is connected to the exhaust device. A control box for controlling the material distribution box assembly, the oil collection tank assembly, and the exhaust device is connected to the oil-water separation chamber.

[0008] Preferably, in the oil-water separator, the oil-water separation chamber includes a first oil-water separation chamber and a second oil-water separation chamber. The first oil-water separation chamber has a cuboid structure, and the cross-section of the second oil-water separation chamber has an isosceles trapezoidal structure. The second oil-water separation chamber is connected above the first oil-water separation chamber and the two are interconnected. The first water inlet pipe and the second water inlet pipe both pass through the second oil-water separation chamber and extend into the first oil-water separation chamber. The left and right sides of the first oil-water separation chamber are respectively connected to a left partition and a right partition. The left partition and the right partition are respectively provided with a first channel and a second channel on the bottom surface of the first oil-water separation chamber. The height of the first channel and the second channel is lower than the bottom of the first water inlet pipe and the second water inlet pipe, respectively.

[0009] Preferably, in the oil-water separator, the bottom surface of the first oil-water separation chamber is arranged in a V-shape.

[0010] Preferably, in the oil-water separator, the oil-water separation chamber has an inspection port, and the inspection port is connected to an inspection port cover.

[0011] Preferably, in the oil-water separator, the distribution box assembly includes a distribution box, the bottom of which is connected to a distribution water inlet pipe. A perforated pipe is inclinedly inserted inside the distribution box. The bottom of the perforated pipe opposite to the distribution water inlet pipe has a mesh opening, and the top of the perforated pipe opposite to the mesh opening has a distribution port. A drive motor is connected to the outside of the distribution box. The drive motor is connected to a rotating shaft through a reducer. The rotating shaft is installed inside the perforated pipe and is synchronously arranged along the central axis of the inclined perforated pipe. A spiral feeder is connected to the rotating shaft. A discharge pipe is connected to the perforated pipe located outside the distribution box. An inlet water inlet pipe is connected to the distribution box located above the distribution port.

[0012] Preferably, in the oil-water separator, an overflow filter plate is connected to the feed and water inlet pipe.

[0013] Preferably, in the oil-water separator, a filter baffle for blocking solid waste is connected around the periphery of the dispensing port and between the inner wall of the dispensing box.

[0014] Preferably, in the oil-water separator, the side of the distribution box is connected to a solid-liquid separation chamber maintenance cover, and the top of the distribution box is connected to an openable or closable cover.

[0015] Preferably, in the oil-water separator, the oil collection tank assembly includes an oil collection tank, which is connected to the upper end of a second oil-water separation tank and the two are in communication. Heating rods are connected to the left and right sides of the oil collection tank base. An inclined stirring rod is inserted through the upper end of the oil collection tank. A stirring blade is connected to one end of the stirring rod located inside the oil collection tank. The other end of the stirring rod is connected to a drive device. A thermocouple is connected inside the oil collection tank. A through hole communicating with an exhaust device is opened at the upper end of the oil collection tank.

[0016] By means of the above solution, this utility model has at least the following advantages:

[0017] 1. This utility model uses first and second water inlet pipes to deal with different waste liquids, thereby improving the efficiency of oil-water separation.

[0018] 2. The oil collection tank assembly of this utility model can quickly thaw solidified waste oil, further improving the efficiency of oil-water separation.

[0019] 3. This utility model can filter solid waste through the material distribution box assembly, reducing the amount of solid waste entering the oil-water separation chamber, reducing cleaning trouble, and achieving the purpose of reducing costs.

[0020] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the oil-water separation chamber of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the oil collection tank assembly of this utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the material distribution box assembly of this utility model. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0028] Example

[0029] like Figures 1 to 4 As shown, an oil-water separator includes an oil-water separation chamber 1. A first water inlet pipe 3 and a second water inlet pipe 4, which are connected to the left and right sides of the oil-water separation chamber 1, respectively, are connected to the oil-water separation chamber 1. The first water inlet pipe 3 is connected to a material distribution box assembly 5, and the second water inlet pipe 4 is connected to an exhaust device 6. An oil collection tank assembly 7, which is connected to the oil-water separation chamber 1, is connected to the middle of the oil-water separation chamber 1. The upper end of the oil collection tank assembly 7 is connected to the exhaust device 6. A control box 8 for controlling the material distribution box assembly 5, the oil collection tank assembly 7, and the exhaust device is connected to the oil-water separation chamber 1.

[0030] Oil-water separation:

[0031] The oil-water separation chamber includes a lower first oil-water separation chamber 11 and an upper second oil-water separation chamber 12. The first oil-water separation chamber 11 has a cuboid structure, and the cross-section of the second oil-water separation chamber 12 has an isosceles trapezoidal structure. The second oil-water separation chamber 12 is connected above the first oil-water separation chamber 11 and the two are connected. The first water inlet pipe 3 and the second water inlet pipe 4 both pass through the second oil-water separation chamber 12 and extend into the first oil-water separation chamber 11. The left side and the right side of the first oil-water separation chamber 11 are respectively connected to a left partition 13 and a right partition 14. The left partition 13 and the right partition 14 are respectively provided with a first channel 15 and a second channel 16 on the bottom surface of the first oil-water separation chamber 11. The height of the first channel 15 and the second channel 16 is lower than the bottom of the first water inlet pipe 3 and the second water inlet pipe 4, respectively.

[0032] To ensure that the oil and water on both sides are separated, two baffles are installed. The oil and water enter the oil-water separation chamber from the outside of the baffles. Then, according to the difference in specific gravity between oil and water, the grease floats on the water and the water is below the grease. The baffles separate the grease. There is a gap between the bottom of the baffles and the bottom of the oil-water separation chamber, so that the water can enter the middle of the oil-water separation chamber through the bottom of the baffles, that is, the water is between the two baffles, and then it is discharged from the drain pipe.

[0033] Then, combined with the oil collection tank assembly 7, after the above-mentioned oil-water separation, the separated waste oil is collected into the oil collection tank. The oil collection tank assembly 7 includes an oil collection tank 71, which is connected to the upper end of the second oil-water separation tank 12 and the two are in communication. Heating rods 72 are connected to the left and right sides of the base of the oil collection tank 71. An inclined stirring rod 73 is inserted through the upper end of the oil collection tank 71. A stirring blade 74 is connected to one end of the stirring rod 73 located in the oil collection tank 71. The other end of the stirring rod 73 is connected to the driving device. A thermocouple 75 is connected inside the oil collection tank 71. A through hole communicating with the exhaust device 6 is opened at the upper end of the oil collection tank 71.

[0034] At low temperatures, grease tends to freeze. Therefore, two sets of heating rods are used to heat the grease as much as possible and prevent freezing. However, because the grease is a mixture of different oils, its fluidity is poor, which means the heating rods may not be able to heat the grease in slightly farther areas. Therefore, a stirring mechanism is used to stir the grease within the gap between the two sets of heating rods, allowing the grease in the gap to flow to the side of the heating rods and be heated. Since the thickness of the grease gradually increases after oil and water separation, the stirring mechanism can move up and down, which effectively improves the stirring stability and quality, and allows the heating rods to heat and melt the upper layer of grease as much as possible. This allows the operator to observe the internal grease through the viewing window, facilitating subsequent cleaning of the grease.

[0035] An observation window is provided on the side wall of the oil collection tank 71. A rotatable scraper handle is connected to the observation window. The scraper handle can keep the glass observation window clean at all times, which helps to observe the specific condition of the oil collection tank.

[0036] Furthermore, the oil-water separation chamber 1 is provided with an inspection port, and an inspection port cover 2 is connected to the inspection port, which allows for quick maintenance of the oil-water separation chamber.

[0037] Furthermore, the bottom surface of the first oil-water separation chamber 11 is designed with a V-shape. This V-shape allows wastewater to be discharged, preventing any waste liquid residue. The angle of the V-shape is less than 180° and greater than 160°. Reinforcing ribs are also connected inside the oil-water separation chamber to enhance its overall robustness.

[0038] Solid-liquid separation:

[0039] The material distribution box assembly is connected to the first water inlet pipe, which can quickly separate solid waste and waste liquid, and prevent solids from entering the oil-water separation chamber. The material distribution box assembly 5 includes a material distribution box 51, the bottom of which is connected to the material distribution water inlet pipe 52. A mesh pipe 53 is inclinedly inserted into the material distribution box 51. The bottom of the mesh pipe 53, which is opposite to the material distribution water inlet pipe 52, has mesh openings, and the top of the mesh pipe 53, which is opposite to the mesh openings, has a material distribution port. 54. A drive motor 55 is connected to the outside of the material distribution box 51. The drive motor 55 is connected to the rotating shaft 56 through a reducer. The rotating shaft 56 is installed inside the mesh tube 53 and is synchronously arranged along the central axis of the inclined mesh tube 53. A spiral feeder 57 is connected to the rotating shaft 56. A discharge pipe 58 is connected to the mesh tube 53 located outside the material distribution box 51. A feed and water inlet pipe 59 is connected to the material distribution box 51 located above the material distribution port 54.

[0040] In actual operation, the waste liquid enters through the feed pipe 59 and then enters the distribution port 54 of the distribution box 51. The waste liquid passes through the mesh below the mesh tube 53, while the solid waste remains in the mesh tube 53. The solid waste is then transported to the waste receiving box at the outer end by the spiral feed plate, thus achieving solid-liquid separation.

[0041] Further solid-liquid separation is achieved by connecting an overflow port filter plate 510 to the feed water inlet pipe 59 during the feeding process, which can block some solid waste and reduce the entry of solid waste.

[0042] Furthermore, solid waste is blocked to prevent it from entering the oil-water separation chamber. The specific structure is as follows: a filter baffle 511 for blocking solid waste is connected between the periphery of the distribution port 54 and the inner wall of the distribution box 51. The filter baffle around the distribution port 54 prevents solid waste from entering the oil-water separation chamber from other directions, further improving the solid-liquid separation effect.

[0043] Furthermore, to facilitate cleaning and maintenance of the material distribution box, specifically, the side of the material distribution box 51 is connected to a solid-liquid separation chamber maintenance cover 512, and the top of the material distribution box 51 is connected to an openable or closable cover 513. The solid-liquid separation chamber maintenance cover 512 and the cover 513 enable rapid maintenance and cleaning operations.

[0044] The driving device can be a manual crank or a motor. This invention uses a manual crank, and the tilt angle of the stirring rod 73 is between 30° and 60°, which the operator can adjust according to the actual situation.

[0045] In this utility model, the control box is equipped with a control device, which is a PLC.

[0046] The control device inside the control box is connected to the material distribution box assembly 5, the oil collection tank assembly 7, and the exhaust device via the wiring tray 9 installed on the oil-water separation chamber.

[0047] In actual use, since food waste is prone to producing waste gases such as biogas, an exhaust device is installed. The exhaust device is connected to the oil collection tank assembly and the second water inlet pipe. The exhaust device is used to discharge the waste gas and ensure the safety of the equipment.

[0048] The working principle of this utility model is as follows:

[0049] In actual operation, the first water inlet pipe separates solid waste through the material distribution box assembly and then sends the waste liquid into the oil-water separation chamber. The second water inlet pipe is directly connected to the waste liquid. Both pipes simultaneously send different types of waste liquid into the oil-water separation chamber, where the oil-water separation chamber separates the oil and water in the waste liquid.

[0050] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0051] In the description of this application, it should be noted that the terms "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for 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, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0052] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or vertical, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0053] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0054] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An oil-water separator characterized by: The system includes an oil-water separation chamber (1), with a first water inlet pipe (3) and a second water inlet pipe (4) connected to the left and right sides of the oil-water separation chamber (1), respectively. The first water inlet pipe (3) is connected to the material distribution box assembly (5), and the second water inlet pipe (4) is connected to the exhaust device (6). An oil collection tank assembly (7) is connected to the middle of the oil-water separation chamber (1), and the upper end of the oil collection tank assembly (7) is connected to the exhaust device (6). A control box (8) for controlling the material distribution box assembly (5) and the oil collection tank assembly (7) is connected to the oil-water separation chamber (1).

2. The oil-water separator according to claim 1, characterized in that: The oil-water separation chamber (1) includes a first oil-water separation chamber (11) and a second oil-water separation chamber (12). The first oil-water separation chamber (11) has a cuboid structure, and the cross-section of the second oil-water separation chamber (12) has an isosceles trapezoidal structure. The second oil-water separation chamber (12) is connected above the first oil-water separation chamber (11) and the two are connected. The first water inlet pipe (3) and the second water inlet pipe (4) both pass through the second oil-water separation chamber (12) and extend into the first oil-water separation chamber (11). The left side and the right side of the first oil-water separation chamber (11) are respectively connected to a left partition (13) and a right partition (14). The left partition (13) and the right partition (14) are respectively provided with a first channel (15) and a second channel (16) on the bottom surface of the first oil-water separation chamber (11). The height of the first channel (15) and the second channel (16) is lower than the bottom of the first water inlet pipe (3) and the second water inlet pipe (4).

3. An oil-water separator according to claim 2, characterized in that: The bottom surface of the first oil-water separation chamber (11) is arranged in a V-shape.

4. An oil-water separator according to claim 1, characterized in that: The oil-water separation chamber (1) is provided with an inspection port, and an inspection port cover plate (2) is connected to the inspection port.

5. An oil-water separator according to claim 1, characterized in that: The material distribution box assembly (5) includes a material distribution box (51), the bottom of which is connected to a material distribution inlet pipe (52). A mesh pipe (53) is obliquely inserted inside the material distribution box (51). The bottom of the mesh pipe (53), opposite to the material distribution inlet pipe (52), has mesh openings, and the top of the mesh pipe (53), opposite to the mesh openings, has a material distribution port (54). A drive motor (55) is connected to the outside of the material distribution box (51). The drive motor (55) is connected to the rotating shaft (56) through a reducer. The rotating shaft (56) is installed inside the mesh tube (53) and is synchronously arranged along the central axis of the inclined mesh tube (53). A spiral feeder (57) is connected to the rotating shaft (56). A discharge pipe (58) is connected to the mesh tube (53) located outside the distribution box (51). A feed and water inlet pipe (59) is connected to the distribution box (51) located above the distribution port (54).

6. An oil-water separator according to claim 5, characterized in that: An overflow filter plate (510) is connected to the feed water inlet pipe (59).

7. An oil-water separator according to claim 5, characterized in that: A filter baffle (511) for blocking solid waste is connected between the periphery of the feed inlet (54) and the inner wall of the feed box (51).

8. An oil-water separator according to claim 5, characterized in that: The side of the material distribution box (51) is connected to a solid-liquid separation chamber maintenance cover (512), and the top of the material distribution box (51) is connected to a cover (513) that can be opened or closed.

9. An oil-water separator according to claim 1, characterized in that: The oil collection tank assembly (7) includes an oil collection tank (71), which is connected to the upper end of the second oil-water separation tank (12) and the two are in communication. Heating rods (72) are connected to the left and right sides of the base of the oil collection tank (71). An inclined stirring rod (73) is inserted through the upper end of the oil collection tank (71). A stirring blade (74) is connected to one end of the stirring rod (73) located in the oil collection tank (71). The other end of the stirring rod (73) is connected to the driving device. A thermocouple (75) is connected inside the oil collection tank (71). A through hole connected to the exhaust device (6) is opened at the upper end of the oil collection tank (71).