An oil-water separation device

Abstract

This utility model discloses an oil-water separation device, including a base. The device is characterized by a wastewater tank located on the left end of the base, a peristaltic pump mounted on the right side of the wastewater tank, a support frame mounted on the right side of the peristaltic pump, and a separation box mounted on the upper side of the support frame. A top cover is provided on the separation box. The inlet pipe of the peristaltic pump is connected to the bottom of the wastewater tank, and the outlet pipe of the peristaltic pump is connected to the inlet in the middle of the top cover. A separation component is provided inside the wastewater tank, including a support block. An oil-water separation screen is mounted on the upper side of the support block. The upper end of the oil-water separation screen is connected to the inner wall of the right side of the separation box, and the lower end is connected to the support block. There is a gap between the support block and the inner wall of the left side of the separation box, and a second outlet is provided at the lower end of this gap. An inclined discharge block, higher on the left and lower on the right, is provided below the oil-water separation screen. A first outlet corresponding to the inclined discharge block is opened on the right side wall of the oil-water separation box. The device features a simple structure and high separation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an oil-water separation device. Background Technology

[0002] With continuous economic development and rising living standards, the catering industry has also grown rapidly, resulting in an increasing amount of oily wastewater. Due to its high oil content, direct discharge of such wastewater will pollute the environment. Furthermore, it is unacceptable to discharge it directly into urban drainage networks, as this will impact drainage equipment and urban wastewater treatment plants.

[0003] Meanwhile, petrochemical enterprises also generate large amounts of oily wastewater. The high oil content makes it unsuitable for subsequent biological treatment. Therefore, oil-water separation tanks are currently used to separate the oil and water before the wastewater enters the subsequent treatment stage. Traditional oil-water separators are usually designed in a long and narrow shape or with compartments to reduce the water flow velocity and allow the wastewater sufficient residence time within the tank. During the slow flow, the oil gradually rises to the surface, forming an oil layer. This oil is then removed manually, by mechanical skimming devices, or by oil drain pipes before entering the next treatment stage. This method has low separation efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an oil-water separation device with simple structure and high separation efficiency.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an oil-water separation device, comprising a base, characterized in that a sewage tank is provided on the left end of the base, a peristaltic pump is installed on the right side of the sewage tank on the base, a support frame is installed on the right side of the peristaltic pump, and a separation box is provided on the upper side of the support frame;

[0006] The separation tank is equipped with a top cover. The inlet pipe of the peristaltic pump is connected to the bottom of the sewage tank, and the outlet pipe of the peristaltic pump is connected to the inlet in the middle of the top cover. A separation assembly is installed inside the sewage tank. The separation assembly includes a support block installed on the bottom plate of the separation tank. An oil-water separation screen is installed on the upper side of the support block. The oil-water separation screen is a hydrophobic and oleophilic separation screen. The upper end of the oil-water separation screen is connected to the inner wall of the right side of the separation tank, and the lower end is connected to the support block. There is a gap between the support block and the inner wall of the left side of the separation tank, and a second outlet is provided at the lower end of the gap. The second outlet is connected to the water collection tank located below the separation tank. An inclined discharge block with the left side higher than the right side is provided below the oil-water separation screen. A first outlet corresponding to the inclined discharge block is opened on the right side wall of the oil-water separation tank. The first outlet is connected to the oil collection tank located on the right side of the separation tank.

[0007] In the above scheme, the middle part of the oil-water separator is concave to form an arc-shaped section, and the water inlet in the middle of the top cover is located above the arc-shaped section. The arc-shaped concave section, by appropriately increasing the residence time and expanding the contact area, is beneficial for oil-water separation.

[0008] In the above scheme, the water collection tank is connected to the drain pipe, and the oil collection tank is connected to the waste oil collection tank through a pipe.

[0009] In the above scheme, an oil collection chute is installed at the second outlet to facilitate oil collection.

[0010] In the above solution, a removable filter frame is installed in the upper part of the sewage tank. This can intercept large debris.

[0011] The oil-water separation device provided by this utility model has the following beneficial effects: Through the separation components installed inside the wastewater tank, oil droplets can be effectively intercepted and oil-water separated based on the different physical properties of oil and water. Oil drips onto the oil-water separation screen and falls into the oil collection tank, while water passes through the water separation screen and enters the water collection tank. This utility model uses an inclined setting for the oil-water separation screen, which helps to improve the oil-water separation effect. The separation is highly efficient. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is a three-dimensional structural diagram of the oil-water separator of this utility model.

[0014] Figure 3 This is a partial schematic diagram of the oil-water separator of this utility model.

[0015] Figure 4 This is a schematic diagram of the filter frame of this utility model.

[0016] Figure 5 This is a cross-sectional structural diagram of the oil-water separator of this utility model.

[0017] Figure 6 This is a schematic diagram of the oil-water separator in Example 2.

[0018] Figure 7 This is a cross-sectional view of the oil-water separator in Example 2.

[0019] In the diagram: 1. Base, 2. Sewage tank, 3. Filter frame, 4. Peristaltic pump, 5. Support frame, 6. Separation box, 7. Top cover, 8. Delivery pipe, 9. Inclined outlet block, 10. Water collection tank, 11. Oil collection tank, 12. Support block, 13. Zinc-nickel mesh, 14. Arc-shaped part, 15. Oil collection chute. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] In this utility model, directional terms such as up, down, left, and right only represent relative positions in the diagram and do not indicate the absolute position of the product.

[0022] Example 1

[0023] like Figure 1-5 As shown, an oil-water separation device includes a base 1, a wastewater tank 2 located on the upper left side of the base 1, and a filter frame 3 located in the upper part of the wastewater tank 2. Preferably, the filter frame 3 is detachably installed on the upper part of the wastewater tank 2. Specifically, hooks are provided on both sides of the filter frame 3, and the hooks are hung on both sides of the wastewater tank. A peristaltic pump 4 is installed on the upper side of the base 1 near the right side of the wastewater tank 2, and a support frame 5 is installed on the right side of the peristaltic pump 4. A separation box 6 is installed on the support frame 5. Specifically, the support frame 5 is a table-shaped frame, and the separation box 6 is located on the tabletop of the support frame 5. An oil collection tank 10 is located on the base 1 below the tabletop.

[0024] The separation tank 6 is equipped with a top cover 7. The inlet pipe of the peristaltic pump 4 is connected to the bottom outlet of the sewage tank 2, and the outlet pipe 8 of the peristaltic pump 4 is connected to the inlet in the middle of the top cover 7 of the separation tank 6. A separation assembly is installed inside the separation tank 6. An inclined guide block 9 is installed on the lower side of the separation assembly. The separation assembly includes a support block 12, which is located on the left side of the bottom plate of the separation tank 6. An inclined oil-water separation mesh 13 is installed on the upper side of the support block 12, with an inclined angle preferably 10-45°. The middle part of the oil-water separation mesh 13 is concave downwards, forming an arc-shaped part 14, which appropriately increases the residence time and the contact area, thus facilitating oil-water separation. The inlet in the middle of the top cover 7 is located above the arc-shaped part 14. The upper end of the oil-water separation mesh 13 is connected to the inner right wall of the separation tank 6, and the lower end is connected to the support block 12. There is a gap between the support block 12 and the inner left wall of the separation tank 6, and a second outlet is provided at the lower end of this gap. The second outlet is connected to the water collection tank 10 located below the separation tank 6. The oil-water separation mesh, support block 12, inclined guide block 9, and right wall of the separation tank 6 form an independent space through which oil passes. An inclined guide block 9 with a left-high and right-low orientation is provided below the oil-water separation mesh. A first outlet corresponding to the inclined guide block 9 is opened on the right wall of the oil-water separation tank 6. The first outlet is connected to the oil collection tank 11 located on the right side of the separation tank. Preferably, an oil collection chute 15 is provided on the first outlet, which is connected to the oil collection tank 11. The oil-water separation mesh 13 is a hydrophobic and oleophilic separation mesh. Specifically, the oil-water separation mesh 13 can be a superhydrophobic oleophilic nickel mesh, such as a zinc-nickel mesh with a special surface treatment, or a superhydrophobic and oleophilic metallic nickel mesh. Surface treatments, such as forming metal sulfide coatings or fluoride coatings with micro- or nano-structures on the surface, are existing technologies and will not be elaborated here.

[0025] When oily wastewater (especially kitchen wastewater) is discharged, oil-water separation is required. This process can affect the drainage equipment and municipal sewage treatment plants. In operation of this device, the oily wastewater is first sent into the wastewater tank 2. The wastewater tank 2 is equipped with a removable filter screen to remove impurities such as food residue that may be present in the oily wastewater. Then, the peristaltic pump 4 can be controlled to operate. The peristaltic pump 4 can be a Camor KDS3000-ST-S36. The inlet and outlet pipes can be made of silicone tubing, which has excellent properties of high and low temperature resistance and oil resistance, and can meet the transportation requirements of wastewater.

[0026] Subsequently, the oily wastewater enters the separation tank 6 and acts on the surfaces of the oil-water separation net 13 and the arc-shaped part 14. The surfaces of the oil-water separation net 13 and the arc-shaped part 14 are oleophilic and hydrophobic, which allows water droplets to form spherical shapes on the surface, making it difficult for them to adhere or penetrate. Due to the inclined setting of the oil-water separation net, the water droplets can slide down and be discharged through the support block 12 and the first outlet, and finally collected through the water collection tank 10. Oil droplets in the oily wastewater will pass through the oil-water separation net and drip onto the inclined discharge block 9, which has a guide groove to facilitate the discharge of oil droplets from the second outlet. The oil collection chute 15 can increase the discharge effect of oil droplets and prevent oil droplets from spilling.

[0027] After the device has finished operating, the top cover 7 can be removed, and the oil-water separator 13 and the surface of the arc-shaped part 14 can be cleaned.

[0028] The water collection tank is connected to the drain pipe, and the oil collection tank is connected to the waste oil collection tank via a pipe. The drain pipe and waste oil collection tank are not shown in the figure. This device is suitable for restaurants and can also be used for the efficient separation of oil and water in oily wastewater from petrochemical plants.

[0029] Example 2

[0030] The rest is the same as in Example 1, except that an upwardly extending oleophobic and hydrophilic intercepting net 16 is provided on the support block 12. Water can pass through the intercepting net. The intercepting net 16 is located at the bottom of the oil-water separation net 13. If there is a high oil content and the oil-water separation effect is poor, the intercepting net can block the oil and allow the water to pass through.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oil-water separator, comprising a base (1), characterized in that, A sewage tank (2) is provided on the left side of the base (1), a peristaltic pump (4) is installed on the right side of the sewage tank (2) on the base (1), a support frame (5) is installed on the right side of the peristaltic pump (4), and a separation box (6) is provided on the upper side of the support frame (5). The separation tank (6) is provided with a top cover (7). The inlet pipe of the peristaltic pump (4) is connected to the bottom of the sewage tank (2). The outlet pipe of the peristaltic pump (4) is connected to the inlet in the middle of the top cover (7). The sewage tank (2) is provided with a separation component. The separation component includes a support block (12) set on the bottom plate of the separation tank (6). An oil-water separation net (13) is provided on the upper side of the support block (12). The oil-water separation net is a hydrophobic and oleophilic separation net. The upper end of the oil-water separation net (13) is connected to the separation... The inner wall of the right side of the tank (6) is connected, and the lower end is connected to the support block (12). There is a gap between the support block (12) and the inner wall of the left side of the separation tank (6), and a second outlet is provided at the lower end of the gap. The second outlet is connected to the water collection tank (10) located below the separation tank (6). An inclined guide block (9) with the left side higher than the right side is provided below the oil-water separation net. A first outlet corresponding to the inclined guide block is opened on the right side wall of the oil-water separation tank (6). The first outlet is connected to the oil collection tank (11) located on the right side of the separation tank.

2. The oil-water separation device according to claim 1, characterized in that, The oil-water separator is recessed in the middle to form an arc-shaped part, and the water inlet in the middle of the top cover is located above the arc-shaped part.

3. The oil-water separation device according to claim 2, characterized in that, An oil collection chute (15) is provided at the second outlet.

4. An oil-water separation device according to any one of claims 1-3, characterized in that, The upper part of the sewage tank (2) is equipped with a detachable filter frame (3).

5. The oil-water separation device according to claim 4, characterized in that, The water collection tank is connected to the drain pipe, and the oil collection tank is connected to the waste oil collection tank through a pipe.

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