CN206570059U - Oily retracting device in a kind of industrial wastewater - Google Patents

Abstract

The utility model relates to an oil recovery device in industrial waste water, which comprises a waste liquid tank, a waste liquid main pipeline connected to the liquid outlet of the waste liquid tank, and at least two separation tanks arranged side by side. The waste liquid main pipeline passes through the transfusion branch pipe and the The separation tank is connected, and the infusion branch pipe extends below the liquid level in the separation tank through the cover. There is a vertically arranged oil discharge pipe in the separation tank. The lower port of the oil discharge pipe passes through the bottom wall of the separation tank and is connected to the oil recovery main pipe. , The bottom wall of the separation tank is provided with a drain port, the drain port is connected with a drain pipe, and the side wall of the separation tank is provided with a glass observation port for observing the liquid level. The utility model is provided with at least two separation tanks, which greatly improves the oil separation speed and efficiency, and it is convenient to observe the oil-water separation situation through the glass observation port. The oil is collected through the oil discharge pipe, and the water is collected through the drain pipe. Well, after the water is collected, it can be processed in subsequent processes. The utility model has the advantages of simple structure, convenient operation and low cost.

Description

A device for recovering oil from industrial wastewater

technical field

The utility model relates to an equipment for collecting and separating oil in industrial waste water, in particular to an oil recovery device in industrial waste water.

Background technique

Industrial wastewater contains a large amount of oil, which is an oily liquid that is immiscible with water. Because it floats on the water, it brings difficulties to the treatment of industrial wastewater and affects the efficiency of wastewater treatment. At present, the commonly used methods for oil separation include distillation, solvent extraction, and pressing. In actual production, steam distillation is a common extraction method, but there are many shortcomings in distillation and separation equipment, and it is difficult to realize the collection and separation of oil and water.

Utility model content

The technical problem to be solved by the utility model is to provide an oil recovery device in industrial wastewater, which is convenient for the collection and separation of oil and water, and has good separation effect and high extraction efficiency.

In order to achieve the above object, the technical scheme that the utility model takes is:

A recovery device for oil in industrial wastewater, comprising a waste liquid tank, a waste liquid main pipeline connected to the liquid outlet of the waste liquid tank, and at least two separation tanks arranged side by side. There is a cover, and the waste liquid main pipeline is connected to the separation tank through the infusion branch pipe, and the waste liquid is contained in the separation tank. The infusion branch pipe passes through the cover and extends below the liquid level in the separation tank. A solenoid valve, the separation tank is provided with a vertically arranged oil discharge pipe, the upper port of the oil discharge pipe is located above the outlet of the infusion branch pipe, and the lower port of the oil discharge pipe passes through the bottom wall of the separation tank It is connected to the oil recovery main pipe, which is connected to the oil collection tank. The oil recovery main pipe is provided with an oil return pump. On the reclaimed water main pipe, the reclaimed water main pipe is connected with the water collection tank, the reclaimed water main pipe is provided with a return pump, each drain pipe is provided with a second electromagnetic valve, and the side wall of the separation tank is provided with a Bit glass viewing port.

The waste liquid main pipeline is connected with three separation tanks.

The oil discharge pipe is provided with a moisture detector.

The recovery oil main pipe is connected with a circulation branch pipe, and the other end of the circulation branch pipe is connected with the waste liquid main pipeline. The third electromagnetic valve is installed at both ends of the circulation branch pipe. A fourth electromagnetic valve is installed on one side of the collection tank, and a fifth electromagnetic valve is installed on the side of the waste liquid main pipeline near the waste liquid tank at the junction of the circulation branch pipe and the waste liquid main pipeline.

A sixth electromagnetic valve is arranged on the oil discharge pipe.

The utility model is provided with at least two separation tanks, which do not affect each other, thus greatly improving the oil separation speed and efficiency, and a glass observation port is provided on the side wall of the separation tank, so that it is convenient to observe the oil-water separation situation, and it is convenient to control the oil-water separation. The oil enters the oil collection tank through the oil discharge pipe for collection, and the water enters the water collection tank through the drain pipe for collection. The oil-water separation effect is good, and the water can be processed after being collected through the water collection tank. The utility model has the advantages of simple structure, convenient operation, low cost and easy popularization.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, an oil recovery device in industrial wastewater includes a waste liquid tank 1, a waste liquid main pipeline 2 connected to the liquid outlet of the waste liquid tank, and at least two separation tanks 3 arranged side by side. A liquid delivery pump 22 is provided, and a cover is provided on the separation tank 3. The waste liquid main pipeline 2 is respectively connected to the separation tank 3 through the infusion branch pipe 4, and the separation tank 3 is used to contain the separation waste liquid. The density is less than water, so the oil floats on the water, that is, the waste water is separated into the oil layer 5 and the water layer 6, the oil layer 5 floats on the water layer 6, and the infusion branch pipe 4 extends into the water layer in the separation tank through the cover. Each infusion branch pipe is provided with a first solenoid valve 7, and the separation tank is provided with a vertically arranged oil discharge pipe 8, and the upper port of the oil discharge pipe 8 is located above the outlet of the infusion branch pipe, so that the After the oil is separated, the lower port of the oil discharge pipe 8 passes through the bottom wall of the separation tank and is connected to the oil recovery main pipe 9. The oil recovery main pipe 9 is connected to the oil collection tank 10. The oil recovery main pipe is provided with an oil return pump 23, and the separation tank The bottom wall of the bottom wall is provided with a drain port, and the drain port is connected with a drain pipe 11, and the end of the drain pipe 11 is connected with the recycling water main pipe 12. Each drain pipe 11 is provided with a second electromagnetic valve 14, and the side wall of the separation tank is provided with a glass observation port 15 for observing the liquid level. The glass observation port 15 is located on the upper port side of the oil discharge pipe 8, which is convenient Observe the oil-water separation to facilitate the control of oil-water separation.

There are three separation tanks 3 connected to the waste liquid main pipeline 2. When one of the separation tanks is used for oil separation, the other separation tank can be used for adding wastewater, etc. They work independently and do not affect each other, which greatly improves the treatment speed of wastewater. .

The oil discharge pipe 8 is provided with a moisture detector 16, which can monitor the water content of the separated oil, and the oil discharge pipe is provided with a sixth electromagnetic valve 21.

The oil recovery main pipe 9 is connected with a circulation branch pipe 17, and the other end of the circulation branch pipe 17 is connected with the waste liquid main pipe 2. A third electromagnetic valve 18 is installed at both ends of the circulation branch pipe. The recovery oil main pipe 9 is connected between the circulation branch pipe and the recovery oil main pipe A fourth electromagnetic valve 19 is installed on the side near the oil collection tank at the joint, and a fifth electromagnetic valve 20 is installed on the waste liquid main pipeline at the junction of the circulation branch pipe and the waste liquid main pipeline near the waste liquid tank. The detection situation of the moisture detector 16 on the oil pipe 8 is used to control the opening and closing of the third solenoid valve 18 , the fourth solenoid valve 19 and the fifth solenoid valve 20 . When the moisture detector 16 detects that there is no water in the oil, the three solenoid valves 18 at the two ends of the circulation branch pipe are closed, the fourth solenoid valve 19 on the oil recovery main pipe 9 and the fifth solenoid valve 20 on the waste liquid main pipe are opened, and the waste liquid The wastewater in the tank is subjected to oil separation treatment. When the moisture detector 16 detects that there is water in the oil, the fourth solenoid valve 19 on the oil recovery main pipe 9 and the fifth solenoid valve 20 on the waste liquid main pipe are closed, and the three solenoid valves 18 at both ends of the circulation branch pipe are opened, so that the water-containing The oil re-enters the separation tank for oil separation.

When the utility model is specifically used, the fifth solenoid valve 20 and the first solenoid valve 7 are opened, and the waste water in the waste liquid tank 1 enters the separation tank 3 through the waste liquid main pipeline 2 and the infusion branch pipe 4, and the height of the liquid level is controlled to be lower than that of the drain. On the upper port of the oil pipe 8, close the first solenoid valve 7. When the oil is separated and floats on the water surface to form an oil layer, you can open the second solenoid valve 14 on the drain pipe 11 to discharge the separated water, and then close the second solenoid valve. Electromagnetic valve 14, open the first electromagnetic valve 7 and continue to add wastewater to the separation tank 3 for oil separation, repeat the operation. If the thickness of the oil layer is relatively large, the first solenoid valve 7 and the sixth solenoid valve 21 can be opened first, and waste liquid is added to the separation tank 3, so that the oil layer height slowly rises to the upper port of the oil discharge pipe 8, and then the oil quality is released from the discharge pipe 8. The upper port of the oil pipe 8 enters the oil discharge pipe 8 and flows to the recovery oil main pipe 9 and enters the oil collection tank 10 to collect. After the oil is separated, close the first solenoid valve 7 and the sixth solenoid valve 21, and then open the second solenoid valve 14 to turn the The water is discharged, then the second solenoid valve 14 is closed, and the first solenoid valve 7 is opened to continue adding waste water for oil-water separation.

Claims (5)

1. An oil recovery device in industrial waste water, characterized in that: it comprises a waste liquid tank, a waste liquid main pipeline connected to the liquid outlet of the waste liquid tank, and at least two separation tanks arranged side by side, and the waste liquid main pipeline is provided with a delivery tank. Liquid pump, the separation tank is provided with a cover, the waste liquid main pipeline is connected to the separation tank through the infusion branch pipe respectively, and the waste liquid is contained in the separation tank. The branch pipes are provided with a first electromagnetic valve, and the separation tank is provided with a vertically arranged oil discharge pipe, the upper port of the oil discharge pipe is located above the outlet of the infusion branch pipe, and the lower port of the oil discharge pipe passes through The bottom wall of the separation tank is connected to the oil recovery main pipe, and the oil recovery main line is connected to the oil collection tank. The oil recovery main pipe is provided with an oil return pump. The bottom wall of the separation tank is provided with a drain port, and a drain pipe is connected to the drain port. , the end of the drain pipe is connected to the recovery water main pipe, the recovery water main pipe is connected to the water collection tank, the water return pump is provided on the recovery water main pipe, and a second electromagnetic valve is provided on each drain pipe, and the side wall of the separation tank There is a glass observation port for observing the liquid level. 2. The device for recovering oil from industrial wastewater according to claim 1, characterized in that three separation tanks are connected to the waste liquid main pipeline. 3. The device for recovering oil from industrial wastewater according to claim 2, characterized in that: the oil discharge pipe is provided with a moisture detector. 4. The device for recovering oil from industrial waste water according to claim 3, characterized in that: the recovery oil main pipe is connected with a circulation branch pipe, the other end of the circulation branch pipe is connected with the waste liquid main pipe, and the two ends of the circulation branch pipe are installed with a second Three solenoid valves, the oil recovery main pipe is installed on the side where the circulation branch pipe and the recovery oil main pipe are connected to the oil collection tank, and the fourth solenoid valve is installed on the side of the waste liquid main pipe, which is close to the waste liquid at the connection between the circulation branch pipe and the waste liquid main pipe A fifth solenoid valve is installed on one side of the tank. 5. The device for recovering oil from industrial wastewater according to claim 4, characterized in that: the oil discharge pipe is provided with a sixth solenoid valve.