Oil-water separation device for oily wastewater

Abstract

The oil-water separation device comprises a box body, a water inlet pipe, a water outlet pipe and an oil outlet pipe, the space in the box body is divided into a first containing cavity and a second containing cavity by a partition plate, a refrigeration assembly is arranged in the first containing cavity, an aeration assembly is arranged in the second containing cavity, a rotating assembly and an air supply component are arranged on the box body, and the air supply component is arranged on the box body. The air supply component is connected with the aeration assembly, and the first containing cavity and the second containing cavity are communicated through a connecting pipe. After oily wastewater enters the first containing cavity, the refrigeration assembly works, the temperature of the wastewater is reduced, grease in the wastewater is solidified after the temperature is reduced and suspends on the wastewater, the lifting plate moves upwards, the bent rod drives the filter screen to move upwards, and the filter screen removes the grease floating on the wastewater; the wastewater subjected to primary treatment enters the second containing cavity, the aeration assembly acts, and the aeration pipe enables fine and dense water bubbles to be generated in the wastewater, so that the vibration and mixing effects of a mixture in the wastewater are enhanced, the oil-water separation efficiency is improved, and the oil-water separation effect is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and in particular relates to an oil-water separation device for oily wastewater. Background Technology

[0002] Oily wastewater refers to wastewater containing lipids, fatty acids, soaps, fats, waxes, and various oils such as mineral oils and animal and vegetable oils. This type of wastewater is characterized by high chemical oxygen demand (COD) and biochemical oxygen demand (BOD), has a certain odor and color, is flammable and easily oxidized and decomposed, and is generally lighter than water and poorly soluble in water.

[0003] Oily wastewater poses significant hazards to the environment and human health. It deteriorates water quality, harms aquatic resources, affects crop production, pollutes the atmosphere, impacts natural landscapes, and threatens clean natural water sources. Specifically, oily substances in wastewater typically exist in three states: suspended oil, dispersed oil, and emulsified oil. Suspended oil particles larger than 100 μm are easily separated; dispersed oil particles between 10 and 100 μm are more difficult to separate; emulsified oil particles smaller than 10 μm are very stably dispersed in water and are difficult to separate by settling.

[0004] Patent document CN205386356U discloses an oil-water separator, including a body with an oil-water mixing chamber. It achieves oil-water separation by static settling, but the oil-water separation is incomplete and the separation effect needs to be improved. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an oil-water separation device for oily wastewater.

[0006] This utility model is achieved through the following technical solution.

[0007] This utility model provides an oil-water separation device for oily wastewater, including a tank, an inlet pipe, an outlet pipe, and an oil outlet pipe. The tank is equipped with a partition that divides the internal space into a first cavity and a second cavity. The first cavity is equipped with a refrigeration component, and the second cavity is equipped with an aeration component. The tank is equipped with a rotating component and an air supply component, which are connected to the aeration component. The inlet pipe is connected to the first cavity, and the outlet pipe and the oil outlet pipe are respectively connected to the second cavity. The first cavity and the second cavity are connected by a connecting pipe.

[0008] Preferably, a filter screen is slidably connected to the upper end of the cavity, a connecting rod is provided above the cavity, and a lifting plate is slidably connected to the side of the box corresponding to the position of the cavity. One end of the connecting rod is connected to the filter screen, and the other end of the connecting rod is rotatably connected to the lifting plate. The rotating component is set on the lifting plate.

[0009] Preferably, the refrigeration assembly includes an inlet pipe, an outlet pipe, and a refrigeration pipe. The refrigeration pipe is located at the lower end of the cavity, and its two ends are connected to the inlet pipe and the outlet pipe, respectively. The inlet pipe and the outlet pipe are mounted on the housing and protrude from the cavity.

[0010] Preferably, the aeration assembly includes an aeration pipe, the lower end of the second cavity is uniformly provided with the aeration pipe, and the side of the box body is provided with an air supply component corresponding to the position of the second cavity, the air supply component being connected to the aeration pipe.

[0011] Preferably, the air supply component includes an air pump and a main pipe, the main pipe is connected to the side of the box body, the main pipe is connected to the aeration pipe, and an air pump is provided at one end of the main pipe.

[0012] Preferably, the rotating assembly includes a motor, a first gear, and a second gear, with the first gear located at the output end of the motor, and the second gear meshing with the first gear.

[0013] Preferably, the side of the box is provided with a limiting strip, and the lifting plate is slidably connected to the limiting strip.

[0014] Preferably, the inlet pipe, outlet pipe, oil outlet pipe, and connecting pipe are all equipped with solenoid valves.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. After the oily wastewater enters the first chamber, the cooling component works to lower the temperature of the wastewater. The oil in the wastewater solidifies after the temperature drops and floats on the surface of the wastewater. The lifting plate moves upward, which drives the filter screen to move upward through the bent rod. The filter screen removes the oil floating on the surface of the wastewater.

[0017] 2. After preliminary treatment, the wastewater enters the second chamber. The aeration components activate, and the aeration pipes generate fine bubbles in the wastewater, thereby enhancing the vibration and mixing effect of the mixture in the wastewater, thus improving the efficiency of oil-water separation and ensuring the effect of oil-water separation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the box in this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the refrigeration component of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the rotating component of this utility model;

[0022] In the diagram: 1. Box body; 2. Water inlet pipe; 3. Water outlet pipe; 4. Oil outlet pipe; 5. Baffle plate; 6. Cavity 1; 7. Cavity 2; 8. Filter screen; 9. Connecting rod; 10. Lifting plate; 11. Cylinder; 12. Connecting pipe; 13. Inlet pipe; 14. Outlet pipe; 15. Refrigeration pipe; 16. Aeration pipe; 17. Air pump; 18. Main pipe; 19. Motor; 20. Gear 1; 21. Gear 2; 22. Limiting strip; 23. Solenoid valve. Detailed Implementation

[0023] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0024] Example 1:

[0025] like Figures 1 to 3 As shown, an oil-water separation device for oily wastewater includes a tank 1, an inlet pipe 2, an outlet pipe 3, and an oil outlet pipe 4. The tank 1 is symmetrically equipped with partitions 5, which divide the internal space of the tank 1 into a first cavity 6 and a second cavity 7. A refrigeration component is installed in the first cavity 6, and an aeration component is installed in the second cavity 7. A rotating component and an air supply component are installed on the tank 1, and the air supply component is connected to the aeration component. The inlet pipe 2 is connected to the first cavity 6, and the outlet pipe 3 and the oil outlet pipe 4 are respectively connected to the second cavity 7. The oil outlet pipe 4 is located above the outlet pipe 3. The first cavity 6 and the second cavity 7 are connected by a connecting pipe 12.

[0026] The upper end of the cavity 6 is slidably connected to a filter screen 8. After water is filled, the filter screen 8 is located below the water surface. A connecting rod 9 is provided above the cavity 6. A lifting plate 10 is slidably connected to the side of the box body 1 at a position corresponding to the cavity 6. One end of the connecting rod 9 is connected to the filter screen 8, and the other end of the connecting rod 9 is rotatably connected to the lifting plate 10. A rotating assembly is provided on the lifting plate 10. The rotating assembly drives the connecting rod 9 to rotate. A cylinder 11 is provided below the lifting plate 10. The piston rod of the cylinder 11 is connected to the lifting plate 10.

[0027] The refrigeration assembly includes an inlet pipe 13, an outlet pipe 14, and a refrigeration pipe 15. The refrigeration pipe 15 is located at the lower end of the cavity 6 and is arranged in a serpentine bend. The two ends of the refrigeration pipe 15 are respectively connected to the inlet pipe 13 and the outlet pipe 14. The inlet pipe 13 and the outlet pipe 14 are arranged on the housing 1 and protrude from the cavity 6.

[0028] The aeration assembly includes an aeration pipe 16. The lower end of the cavity 2 7 is uniformly provided with the aeration pipe 16. The side of the box 1 is provided with an air supply component corresponding to the position of the cavity 2 7. The air supply component is connected to the aeration pipe 16. Several aeration pipes 16 are arranged in parallel.

[0029] The air supply component includes an air pump 17 and a main pipe 18. The main pipe 18 is connected to the side of the housing 1 and is connected to the aeration pipe 16. One end of the main pipe 18 is equipped with an air pump 17 connected to it.

[0030] The rotating assembly includes a motor 19, a first gear 20, and a second gear 21. The motor 19 is connected to the lifting plate 10. The first gear 20 is provided on the output end of the motor 19. The second gear 21 is located at the connection between the connecting rod 9 and the lifting plate 10. The second gear 21 meshes with the first gear 20.

[0031] During use, oily wastewater enters the cavity 6 through the inlet pipe 2, and refrigerant is injected into the refrigeration pipe 15 through the inlet pipe 13 to cool the wastewater in the cavity 6. As the temperature of the wastewater in the cavity 6 decreases, the grease in it solidifies and floats on the surface of the wastewater. After the refrigerant is heated, it flows out from the outlet pipe 14.

[0032] When the grease solidifies and floats on the surface of the wastewater, the piston rod of cylinder 11 extends, causing the lifting plate 10 to move upward. The lifting plate 10, through connecting rod 9, causes the filter screen 8 to move upward, and the filter screen 8 removes the solidified grease floating on the surface of the wastewater. At this time, motor 19 rotates, driving gear 20 to rotate. Gear 20 drives gear 21, which meshes with it, to rotate. Gear 21 drives connecting rod 9 to rotate, and connecting rod 9 drives the filter screen 8 to move. The filter screen 8 moves out of the upper end of the housing 1 and rotates out of the outer side of the housing 1, making it easier to clean the solidified grease remaining on the filter screen 8.

[0033] After preliminary treatment, the wastewater enters the secondary chamber 7 through connecting pipe 12. Air pump 17 activates, supplying air to the main pipe 18, which in turn supplies air to the aeration pipe 16. The aeration pipe 16 generates fine water bubbles, thereby enhancing the agitation and mixing effect of the mixture within the wastewater, thus improving the efficiency of oil-water separation and ensuring the desired separation effect. After treatment, the oil layer in the wastewater is discharged from the oil outlet pipe 4, and the remaining wastewater is discharged from the water outlet pipe 3.

[0034] Example 2:

[0035] like Figure 1 , 4 As shown, an oil-water separation device for oily wastewater, based on Embodiment 1, has a limiting strip 22 on the side of the housing 1, and the lifting plate 10 is slidably connected to the limiting strip 22.

[0036] Solenoid valves 23 are installed on the water inlet pipe 2, water outlet pipe 3, oil outlet pipe 4, and connecting pipe 12.

[0037] During the movement of the lifting plate 10, the limiting strip 22 guides its movement direction. The solenoid valves 23 on the water inlet pipe 2, water outlet pipe 3, oil outlet pipe 4, and connecting pipe 12 facilitate the control of the flow and discharge of wastewater and oil layer.

Claims

1. An oil-water separation device for oil-containing wastewater, characterized by: The utility model provides a kind of refrigeration and aeration device, including box (1), water inlet pipe (2), water outlet pipe (3) and oil outlet pipe (4), the box (1) is equipped with baffle (5), the baffle (5) separates the space in box (1) into container cavity one (6) and container cavity two (7), container cavity one (6) is equipped with refrigeration component, container cavity two (7) is equipped with aeration component;Box (1) is provided with rotating component and gas supply component, the gas supply component is connected with aeration component, the water inlet pipe (2) is communicated with container cavity one (6), the water outlet pipe (3) and oil outlet pipe (4) are communicated with container cavity two (7) respectively, container cavity one (6) and container cavity two (7) are communicated by connecting pipe (12).

2. An oil-water separation device for oil-containing wastewater as claimed in claim 1, characterized in that: The upper end of the container cavity one (6) is slidably connected with a filter screen (8), and the upper portion of the container cavity one (6) is provided with a connecting rod (9). The side surface of the box (1) is slidably connected with a lifting plate (10) at a position corresponding to the container cavity one (6). One end of the connecting rod (9) is connected with the filter screen (8), and the other end of the connecting rod (9) is rotatably connected with the lifting plate (10). The rotating component is arranged on the lifting plate (10).

3. An oil-water separation device for oil-containing wastewater as claimed in claim 1, characterized in that: The refrigeration component includes an inlet pipe (13), an outlet pipe (14) and a refrigeration pipe (15). The refrigeration pipe (15) is located at the lower end of the container cavity one (6). The two ends of the refrigeration pipe (15) are respectively communicated with the inlet pipe (13) and the outlet pipe (14). The inlet pipe (13) and the outlet pipe (14) are arranged on the box (1) and exposed from the container cavity one (6).

4. An oil-water separation device for oil-containing wastewater as claimed in claim 1, characterized in that: The aeration component includes an aeration pipe (16). The lower end of the container cavity two (7) is uniformly provided with the aeration pipe (16). The side surface of the box (1) is provided with a gas supply component at a position corresponding to the container cavity two (7). The gas supply component is communicated with the aeration pipe (16).

5. An oil-water separation device for oil-containing wastewater as claimed in claim 4, characterized in that: The gas supply component includes a gas pump (17) and a main pipe (18). The main pipe (18) is connected with the side surface of the box (1). The main pipe (18) is communicated with the aeration pipe (16). One end of the main pipe (18) is provided with the gas pump (17) communicated therewith.

6. An oil-water separation device for oil-containing wastewater as claimed in claim 1, characterized in that: The rotating component includes a motor (19), a gear one (20) and a gear two (21). The output end of the motor (19) is provided with the gear one (20). The gear two (21) is engaged with the gear one (20).

7. An oil-water separation device for oil-containing wastewater as claimed in claim 2, characterized in that: The side surface of the box (1) is provided with a limiting strip (22). The lifting plate (10) is slidably connected with the limiting strip (22).

8. An oil-water separation device for oil-containing wastewater as claimed in claim 1, characterized in that: The water inlet pipe (2), the water outlet pipe (3), the oil outlet pipe (4) and the connecting pipe (12) are all provided with a solenoid valve (23).

Images