Oil-water separation tank

Abstract

The application provides an oil-water separation tank, which comprises a cuboid or cuboid-like tank body in a horizontal posture, the surface of the tank body comprises an oil unloading port and an oil discharge port, the tank body comprises a first partition plate, a second partition plate and a third partition plate, the first partition plate, the second partition plate and the third partition plate sequentially divide the tank body into a first separation cavity, a second separation cavity, a third separation cavity and a water outlet cavity, the oil unloading port is arranged at the top of the first separation cavity, the first partition plate vertically extends from the top of the tank body to the bottom of the tank body, and the first partition plate and the bottom of the tank body are provided with a first gap, the second partition plate vertically extends from the bottom of the tank body to the top of the tank body, and the second partition plate and the top of the tank body are provided with a second gap, and the third partition plate vertically extends from the top of the tank body to the bottom of the tank body, the third partition plate and the bottom of the tank body are provided with a third gap.

Description

Technical Field

[0001] This application relates to the field of fluid separation equipment, and more particularly to an oil-water separator. Background Technology

[0002] In the process of treating food waste, oil-water separation of waste cooking oil is a crucial step. Existing oil-water separation equipment suffers from problems such as poor separation efficiency, lack of effective observation methods, and inconvenient discharge operation, making it difficult to meet the needs of efficient and precise separation as well as convenient operation and maintenance. This results in incomplete treatment of waste cooking oil, affecting its subsequent utilization or discharge. Therefore, it is necessary to design an oil-water separator with a reasonable structure, good separation effect, and easy observation and operation. Utility Model Content

[0003] In view of this, the present invention provides an oil-water separator, the specific structure of which includes a tank body, the tank body being a cuboid or near-cuboid and in a horizontal position, the surface of the tank body including an oil discharge port and an oil outlet, the tank body including a first partition, a second partition and a third partition, the first partition, the second partition and the third partition sequentially dividing the tank body into a first separation chamber, a second separation chamber, a third separation chamber and a water outlet chamber, the oil discharge port being located at the top of the first separation chamber, the first partition extending vertically from the top of the tank body to the bottom of the tank body, and the first partition and the bottom of the tank body having a first gap, the second partition extending vertically from the bottom of the tank body to the top of the tank body, and the second partition and the top of the tank body having a second gap, the third partition extending vertically from the top of the tank body to the bottom of the tank body, and the third partition and the bottom of the tank body having a third gap.

[0004] Using the above-described structure, when waste cooking oil enters the first separation chamber from the discharge port, it flows into the second separation chamber through the first gap, where floating matter is blocked by the first partition. Then, the waste cooking oil flows through the second gap, over the second partition, into the third separation chamber, where sediment is blocked by the second partition. Finally, the waste cooking oil flows into the water outlet chamber through the third gap. Because water is denser than oil, it lies below the waste cooking oil mixture. Therefore, the waste cooking oil flowing into the water outlet chamber through the third gap is mostly water, while the vast majority of the oil is stored in the third separation chamber. By collecting the oil in the third separation chamber, oil-water separation can be easily and simply completed.

[0005] As one possible implementation, the first gap is less than or equal to 200 mm; the height of the second baffle is at least 250 mm and does not exceed the horizontal centerline of the tank; and the third gap is less than or equal to 100 mm.

[0006] As one possible implementation, the oil drain port is located on the side wall of the tank above the second partition.

[0007] As one possible implementation, the top of the tank also includes a first observation port and a second observation port, with the first observation port located above the second partition and the second observation port located at the top of the water outlet cavity.

[0008] Using the above possible implementation methods, the amount of oil in the second and third separation chambers can be observed through the first observation port, and it can also be used to pump and clean the second and third separation chambers; the amount of water in the water outlet chamber can be observed through the second observation port, and it can also be used to pump and clean the water outlet chamber.

[0009] As one possible implementation, a detachable screen is installed at the unloading port to prevent large impurities from entering the tank.

[0010] As one possible implementation, the tank includes a drain outlet located on the side wall of the water outlet chamber, with the drain outlet position not higher than the oil outlet position.

[0011] As one possible implementation, a first slag discharge port is provided on the side wall of the first separation chamber near the bottom.

[0012] Using the above-mentioned possible implementation method, the first slag discharge port is used to discharge the solid residue in the first separation chamber.

[0013] As one possible implementation, a second slag discharge port is provided on the side wall of the water outlet chamber near the bottom.

[0014] Using the above-mentioned possible implementation method, the second slag discharge port is used to discharge solid residues in the water outlet chamber.

[0015] As one possible implementation, a three-way valve is installed at the drain outlet.

[0016] As one possible implementation, an auxiliary heating device is also included, which is used to heat the mixture inside the tank.

[0017] Using the above-mentioned possible implementation methods, the auxiliary heating device can heat the waste cooking oil, help reduce the viscosity of the oil, accelerate the separation of oil and water, and significantly improve the separation efficiency. Attached Figure Description

[0018] The various technical features of this application and their relationships will be further explained below with reference to the accompanying drawings. The drawings are exemplary; some technical features are not shown to scale, and some drawings may omit technical features commonly used in the art to which this application pertains that are not essential for understanding and implementing this application, or additionally show technical features that are not essential for understanding and implementing this application. In other words, the combination of various technical features shown in the drawings is not intended to limit this application. Furthermore, throughout this application, the same reference numerals refer to the same things. Specific descriptions of the drawings are as follows: Figure 1 This is a first schematic diagram of an embodiment of an oil-water separator in this application; Figure 2 This is a second schematic diagram of an embodiment of an oil-water separator in this application; Figure 3 This is a front view of an embodiment of an oil-water separator in this application; Figure 4 This is a top view of an embodiment of an oil-water separator in this application; Figure 5 This is a right view of an embodiment of an oil-water separator in this application; Figure 6 This is a cross-sectional view (AA) of an embodiment of an oil-water separator in this application; Figure 7 This is a left view of an embodiment of an oil-water separator in this application; Figure 8 This is a CC cross-sectional view of an embodiment of an oil-water separator in this application.

[0019] Explanation of reference numerals in the attached drawings: 10 - Oil unloading port; 11 - Removable screen; 20 - First observation port; 30 - Second observation port; 40 - First slag discharge port; 50 - Drainage port; 51 - Three-way valve; 60 - Second slag discharge port; 70 - Oil discharge port; 80 - Level gauge; 100 - Tank body; 110 - First separation chamber; 111 - First baffle; 120 - Second separation chamber; 121 - Second baffle; 130 - Third separation chamber; 131 - Third baffle; 140 - Water outlet chamber. Detailed Implementation

[0020] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0021] This application provides an oil-water separator, which is specifically composed of a tank body 100.

[0022] Among them, such as Figure 1 , 2 As shown, the tank 100 is rectangular or cuboid in shape and is in a horizontal position. The surface of the tank 100 is provided with an oil unloading port 10 and an oil drain port 70.

[0023] In this embodiment, the tank 100 is 5 meters long, 2 meters wide, and 1 meter high, with a volume of approximately 10 cubic meters. Alternatively, in other embodiments, tanks 100 of other sizes may be used.

[0024] Among them, such as Figure 6 , 8 As shown, the tank 100 is provided with a first baffle 111, a second baffle 121, and a third baffle 131. The first baffle 111, the second baffle 121, and the third baffle 131 are used to block floating impurities or settled impurities. In addition, the third baffle 131 is also used to block grease.

[0025] Among them, such as Figure 6 , 8 As shown, the first partition 111, the second partition 121 and the third partition 131 divide the tank 100 into the first separation chamber 110, the second separation chamber 120, the third separation chamber 130 and the water outlet chamber 140 in sequence.

[0026] In this embodiment, as Figure 6 , 8 As shown, a first baffle 111 extends vertically from the top of the tank 100 to the bottom of the tank 100, and a first gap is provided between the first baffle 111 and the bottom of the tank 100. The first gap is less than or equal to 200 mm. The first gap allows the oil-water mixture to pass through, and the first baffle 111 blocks floating objects in the oil-water mixture.

[0027] In this embodiment, as Figure 6 , 8 As shown, the second baffle 121 extends vertically from the bottom to the top of the tank 100, and a second gap is provided between the second baffle 121 and the top of the tank 100. The height of the second baffle 121 is at least 250 mm, and its height does not exceed the horizontal centerline of the tank 100. The second gap allows floating oil and water to pass freely and is used to block sediment.

[0028] In this embodiment, as Figure 6 , 8 As shown, the third baffle 131 extends vertically from the top of the tank 100 to the bottom of the tank 100, and a third gap is provided between the third baffle 131 and the bottom of the tank 100. The third gap is less than or equal to 100 mm. The third gap allows water to pass through slowly.

[0029] Understandably, the specific design dimensions of the first, second, and third slits, as well as the first, second, and third partitions, are tailored to the characteristics of waste cooking oil, effectively blocking sediment and / or floating matter. Furthermore, the appropriate design dimensions can improve the oil separation efficiency of waste cooking oil.

[0030] Among them, such as Figure 4 As shown, the oil discharge port 10 is located at the top of the first separation chamber 110. The oil-water mixture enters the tank 100 through the oil discharge port 10. A removable screen 11 is provided at the oil discharge port 10 to prevent large impurities from entering the tank 100 through the oil discharge port 10.

[0031] In this embodiment, the aperture of the detachable screen 11 is less than or equal to 20 mm. Alternatively, in other embodiments, screens of other sizes may be used.

[0032] Among them, such as Figure 2 , 4 As shown in Figure 8, the oil drain port 70 is located on the side wall of the tank 100 above the second partition 121. In the oil-water separator embodiment of this application, the floating oil is discharged from the tank 100 through the oil drain port 70.

[0033] Among them, such as Figure 1 , 2 As shown in Figures 3 and 4, the top of the tank 100 is provided with a first observation port 20 and a second observation port 30. The first observation port 20 is located above the second partition 121; the second observation port 30 is located at the top of the water outlet chamber 140. The first observation port 20 is used to observe the liquid state in the second separation chamber 120 and the third separation chamber 130. The second observation port 30 is used to observe the liquid state in the water outlet chamber 140.

[0034] In this embodiment, the first observation port 20, the second observation port 30, and the oil discharge port 10 can be circular or rectangular, with a diameter greater than 500 mm. The first observation port 20, the second observation port 30, and the oil discharge port 10 are also equipped with matching sealing caps. The first observation port 20, the second observation port 30, and the oil discharge port 10 can all be used for suction cleaning and maintenance of the tank 100.

[0035] Among them, such as Figure 2 , 3 As shown in Figures 4, 5, 6, and 8, the tank body 100 includes a drain outlet 50. The drain outlet 50 is located on the side wall of the water outlet chamber 140, and its position is no higher than that of the oil outlet 70. Since oil is lighter than water, the design of having the oil outlet 70 above and the drain outlet 50 below facilitates the separate discharge of oil and water.

[0036] Among them, such as Figure 1 , 3 As shown in Figures 4, 6, 7, and 8, a first slag discharge port 40 is provided on the side wall of the first separation chamber 110 near the bottom. The first slag discharge port 40 is used to discharge the impurities that have settled in the first separation chamber 110.

[0037] Among them, such as Figure 2 , 3As shown in Figures 4, 5, 6, and 8, a second slag discharge port 60 is provided on the side wall of the water outlet chamber 140 near the bottom. The second slag discharge port 60 is used to discharge the sedimented impurities in the water outlet chamber 140.

[0038] In this embodiment, as Figure 6 , 8 As shown, a three-way valve 51 is installed at the drain outlet 50. The three-way valve 51 is used to block oil and water, preventing excessive grease loss during drainage. When there is too much grease floating on the liquid in the outlet chamber 140, the grease can be extracted again or removed by other means, and then put back into the tank through the oil discharge port 10, and the cycle continues. The two inlets of the three-way valve 51 are located in the outlet chamber 140 and are arranged vertically. The upper inlet is used for draining oil, and the lower inlet is used for draining water.

[0039] The oil-water separator embodiment of this application also includes an auxiliary heating device, which is used to heat the mixture inside the tank 100.

[0040] In this embodiment, the auxiliary heating device can be a temporary heating device such as a heating tube or a heating blanket. In other embodiments, the auxiliary heating device can also be a fixed heating device such as a resistance heater.

[0041] Among them, such as Figure 2 , 4 As shown in Figures 5 and 7, the oil-water separator embodiment of this application also includes a level gauge 80. The level gauge 80 is a tubular structure made of transparent or partially transparent material and is vertically mounted on the side wall of the tank 100. Operators can use the level gauge 80 to accurately determine the liquid level inside the tank 100, which helps them determine whether to perform operations such as suction or cleaning and maintenance.

[0042] Preferably, the oil-water separator embodiment of this application also includes an observation sight glass (not shown), which is detachably disposed at the first observation port 20 and the second observation port 30.

[0043] Preferably, the diameter of the level gauge 80 is ≥50 mm. Operators can observe the water-oil separation status through the level gauge 80, and at the same time, they can also observe the liquid level inside the tank 100, thereby preventing excessive impurities in the tank 100 from causing internal blockage.

[0044] Preferably, the tank 100 has a length of 5 meters, a width of 2 meters, and a height of 1 meter. Its volume is approximately 10 cubic meters. It is understood that tanks 100 of other sizes may be used in other embodiments.

[0045] The oil-water separator embodiment of this application utilizes a three-stage separation path formed by a differentiated baffle design. Combined with sun exposure or auxiliary heating of the tank 100, it effectively reduces oil viscosity, accelerates oil-water stratification, and significantly improves separation efficiency. The large-sized unloading port 10, first observation port 20, and second observation port 30 facilitate real-time monitoring of the oil-water separation status by operators. Simultaneously, the dedicated layout of various discharge ports allows for the separate treatment of oil, water phase, and sediment.

[0046] In summary, this application provides an oil-water separator with a reasonable structure, good separation effect, and convenient observation and operation. The oil-water separator, by setting a first baffle 111, a second baffle 121, and a third baffle 131, sequentially divides the tank body 100 into a first separation chamber 110, a second separation chamber 120, a third separation chamber 130, and a water outlet chamber 140. Effective oil-water separation is achieved by adjusting the position and gap size of the baffles. Simultaneously, the inclusion of an observation port, a detachable screen 11, and a three-way valve 51 improves the ease of observation and operation, solves the problems existing in current oil-water separation equipment, and meets the needs for efficient and accurate separation as well as convenient operation and maintenance.

[0047] The term “comprising” as used throughout this application should not be construed as limited to what is listed thereafter; it does not exclude other structural elements or steps.

[0048] It is understood that those skilled in the art can combine the features mentioned in one or more embodiments throughout this application with features from other embodiments in any appropriate manner to implement this application.

[0049] Note that the above are merely preferred embodiments and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the technical concept of this application, all of which fall within the scope of protection of this application.

Claims

1. An oil-water separator, characterized in that, The device includes a tank, which is rectangular or cuboid in shape and lies horizontally. The surface of the tank includes an oil unloading port and an oil drain port. The tank interior includes a first partition, a second partition, and a third partition, which sequentially divide the tank into a first separation chamber, a second separation chamber, a third separation chamber, and a water outlet chamber. The oil unloading port is located at the top of the first separation chamber. The first partition extends vertically from the top of the tank to the bottom of the tank, and a first gap is provided between the first partition and the bottom of the tank. The second partition extends vertically from the bottom of the tank to the top of the tank, and a second gap is provided between the second partition and the top of the tank. The third partition extends vertically from the top of the tank to the bottom of the tank, and a third gap is provided between the third partition and the bottom of the tank.

2. The oil-water separator according to claim 1, characterized in that, The first gap is less than or equal to 200 mm; The height of the second partition is at least 250 mm, and its height does not exceed the horizontal centerline of the tank. The third gap is less than or equal to 100 mm.

3. The oil-water separator according to claim 1, characterized in that, The oil drain port is located on the side wall of the tank above the second partition.

4. The oil-water separator according to claim 1, characterized in that, The top of the tank also includes a first observation port and a second observation port. The first observation port is located above the second partition, and the second observation port is located at the top of the water outlet cavity.

5. The oil-water separator according to claim 1 or 3, characterized in that, A detachable screen is installed at the oil unloading port to prevent large impurities from entering the tank.

6. The oil-water separator according to claim 1 or 3, characterized in that, The tank includes a drain outlet, which is located on the side wall of the water outlet chamber and is positioned no higher than the oil outlet.

7. The oil-water separator according to claim 1, characterized in that, The first slag discharge port is provided on the side wall of the first separation chamber near the bottom.

8. The oil-water separator according to claim 1, characterized in that, A second slag discharge port is provided on the side wall of the water outlet chamber near the bottom.

9. The oil-water separator according to claim 6, characterized in that, A three-way valve is installed at the drain outlet.

10. The oil-water separator according to claim 1, characterized in that, It also includes an auxiliary heating device for heating the mixture inside the tank.

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