Self-adaptive oil pumping recovery device for sewage pool

Abstract

The utility model relates to a self-adaptive oil pumping and recycling device for a sewage pool, and belongs to the field of chemical sewage treatment. Comprising a self-adaptive oil pumping pool, an oil storage tank, an alkali treatment tank and a secondary dehydration tank, the self-adaptive oil pumping pool comprises a sewage pool and a self-adaptive oil pumping plate, the self-adaptive oil pumping plate floats on sewage in the sewage pool and is connected with an inlet pipeline of the oil well pump through a hose, the oil well pump is connected with the oil storage tank, the oil storage tank is connected with the alkali treatment tank and is connected with the top of the secondary dehydration tank through the oil drain pump, and a dehydration bag is arranged at the bottom of the secondary dehydration tank. According to the utility model, the quality of the recovered oil is ensured through multiple times of dehydration, a complex and accurate sewage pool oil pumping system does not need to be designed, a small amount of water entering the oil recovery step is removed through the subsequent oil storage tank and the secondary dehydration tank, the energy consumption and the cost are reduced, the adaptability is strong, and the efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of self-adaptive oil pumping recovery devices of sewage pool, belong to chemical sewage treatment field. BACKGROUND

[0002] The existing sewage oil pumping equipment and technology are mainly divided into three kinds of float separator, automatic oil pumping system and membrane separation technology, wherein the float separator utilizes gravity separation and oil-water interfacial tension and other physical principles, and separates floating oil and sewage through the separation structure inside the equipment;Its structure usually includes water inlet, separation structure, floating oil collection tank and other parts;Its production capacity is low, and the processing efficiency is not high;It is not convenient to operate, and needs frequent cleaning and maintenance. The automatic oil pumping system controls the start-stop of the oil pumping pump through the sensor to monitor the floating oil level, to realize automatic oil pumping;Its structure includes sensor, control system, oil pumping equipment and other components;Its energy consumption is high, and it is not energy-saving;Maintenance cost is high, and maintenance is difficult. The membrane separation technology separates pollutants in water, including floating oil, through semi-permeable membrane;Its implementation process includes water inlet, membrane separation, sewage treatment and clean water production steps;Its effect is not good for treating sewage in complex environment;High energy consumption, not energy-saving. The existing commonly used sewage oil pumping equipment and technology have low sewage treatment efficiency, high maintenance cost, are not suitable for complex environment, and have high energy consumption and other adverse consequences. SUMMARY

[0003] According to the problems described in the background, the utility model solves the problems of:

[0004] How to design a sewage oil pumping equipment with high efficiency, strong adaptability, low maintenance cost and low energy consumption.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A kind of self-adaptive oil pumping recovery devices of sewage pool, characterized by including self-adaptive oil pumping pool, oil storage tank, alkali treatment tank and secondary dehydration tank;The self-adaptive oil pumping pool includes sewage pool and self-adaptive oil pumping plate, the self-adaptive oil pumping plate floats on the sewage of sewage pool, and is connected with the inlet pipeline of oil pumping pump by hose, the oil pumping pump is connected with the oil storage tank, the oil storage tank is connected with the alkali treatment tank, and the secondary dehydration tank top is connected by oil discharging pump, and the secondary dehydration tank bottom is equipped with dehydration bag.

[0007] The top of the oil storage tank is provided with an oil pressure gas pipeline, and the bottom of the side of the oil storage tank is provided with a water level meter, the oil line is also provided with a drain line, and the drain line and the oil line are provided with control valves.

[0008] Preferably, the oil pressure gas pipeline uses industrial wind to press the treated oil to the alkali treatment tank by gas pressure.

[0009] Preferably, the alkali treatment tank is internally provided with a stirrer, and the alkali treatment tank is provided with a vent line at the top.

[0010] Preferably, the dewatering bag is connected with a sewage purification tank, and the secondary dewatering tank is provided with an oil discharge line at the bottom of the far end of the inlet pipeline.

[0011] The sewage is discharged into the sewage tank, and oil-water separation is completed by gravity, and the oil in the upper layer is pumped to the oil storage tank by starting the oil pump, and a small amount of water is brought into the oil storage tank in this step, so that the water is discharged through the water discharge line after standing and separating in the oil storage tank, and because the density of water is greater than that of light oil in the sewage, the water level meter designed according to the water density cannot measure the oil level, so as the water is gradually discharged, the water level meter display level tends to zero, and when the water level approaches zero, the circuit is switched, the control valve of the water discharge line is closed, and the oil pressure pipeline is opened, so that the oil is pressed into the alkali treatment tank for treatment and recovery; after treatment, the oil is discharged into the secondary dewatering tank through the oil discharge pump, and a small amount of water is removed from the dewatering bag.

[0012] The utility model discloses the beneficial effects are:

[0013] The utility model discloses through multiple dewatering, the quality of recovery oil is guaranteed, and need not design a complex accurate sewage tank oil pumping system, and through subsequent oil storage tank and secondary dewatering tank, a small amount of water that enters the recovery oil step is removed, and the energy consumption and cost are reduced, and the adaptability is strong, and the efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is schematic view of the utility model

[0015] In the drawing: 1 is sewage tank;11 is self-adapting oil pumping plate;12 is hose;2 is oil pump;3 is oil storage tank;31 is oil pressure pipeline;32 is water level meter;33 is oil pressure line;34 is water discharge line;35 is control valve;4 is alkali treatment tank;41 is stirrer;42 is vent line;5 is secondary dewatering tank;51 is dewatering bag;52 is oil discharge line;6 is oil discharge pump. DETAILED DESCRIPTION

[0016] Example 1

[0017] A sewage tank self-adapting oil recovery device, including self-adapting oil pumping tank, oil storage tank 3, alkali treatment tank 4 and secondary dewatering tank 5, the self-adapting oil pumping tank includes sewage tank 1 and self-adapting oil pumping plate 11, the self-adapting oil pumping plate 11 floats on the sewage of sewage tank 1, and is connected with the inlet pipeline of oil pump 2 through hose 12, the oil pump 2 is connected with oil storage tank 3, the oil storage tank 3 is connected with alkali treatment tank 4, and the secondary dewatering tank 5 top is connected with secondary dewatering tank 5 through oil discharge pump 6, and the secondary dewatering tank 5 bottom is provided with dewatering bag 51.

[0018] A pressurized oil and gas pipeline 31 is provided on the top of the oil storage tank 3, a water level gauge 32 is provided on the bottom side of the oil storage tank 3, a drainage line 34 is also provided on the oil pressure line 33, and both the drainage line 34 and the oil pressure line 33 are provided with a control valve 35.

[0019] The oil-gas pipeline 31 uses industrial air to pressurize the treated oil to the alkali treatment tank 4 through air pressure.

[0020] An agitator 41 is provided inside the alkali treatment tank 4 , and a vent line 42 is provided on the top of the alkali treatment tank 4 .

[0021] The dehydration bag 51 is connected to the sewage purification tank, and an oil discharge line 52 is provided at the bottom of the secondary dehydration tank 5 away from the end of the inlet pipeline.

[0022] The sewage is discharged into the sewage pool 1, and the oil and water are separated by gravity. The oil pump 2 is started to pump the upper oil into the oil storage tank 3. This step will bring a small amount of water into the oil storage tank 3, so after the oil storage tank 3 is allowed to stand and separate the liquid, the water is first discharged through the drainage line 34. Because the density of water is greater than the light oil in the sewage, the water level gauge 32 designed according to the water density cannot measure the oil level. Therefore, as the water is gradually discharged, the liquid level displayed by the water level gauge 32 will gradually approach zero. When it is close to zero level, the line is switched, the control valve of the drainage line 33 is closed, the oil and gas pipeline 31 is opened, and the oil is pressed into the alkali treatment tank 4 for processing and recovery; after treatment, the oil is discharged to the secondary dehydration tank 5 through the oil discharge pump 6 to remove trace water from the dehydration bag 51.

[0023] The utility model ensures the quality of the recovered oil through multiple dehydration, and does not need to design a complex and accurate sewage tank oil extraction system. A small amount of water entering the oil recovery step is removed through the subsequent oil storage tank 3 and the secondary dehydration tank 5, thereby reducing energy consumption and costs, and has strong adaptability and high efficiency.

Claims

1. A sewage pool adaptive oil recovery device, characterized in that: The invention comprises an adaptive oil pumping pool, an oil storage tank (3), an alkali treatment tank (4) and a secondary dehydration tank (5); the adaptive oil pumping pool comprises a sewage pool (1) and an adaptive oil pumping plate (11); the adaptive oil pumping plate (11) floats on the sewage in the sewage pool (1) and is connected to the inlet pipeline of the oil pump (2) via a hose (12); the oil pump (2) is connected to the oil storage tank (3); the oil storage tank (3) is connected to the alkali treatment tank (4) and is connected to the top of the secondary dehydration tank (5) via an oil discharge pump (6); and a dehydration bag (51) is provided at the bottom of the secondary dehydration tank (5); A pressure oil and gas pipeline (31) is provided on the top of the oil storage tank (3), a water level gauge (32) is provided on the bottom of the side of the oil storage tank (3), a drainage line (34) is also provided on the pressure oil line (33), and both the drainage line (34) and the pressure oil line (33) are provided with a control valve (35).

2. The sewage pool adaptive oil recovery device according to claim 1, characterized in that: The oil-gas pipeline (31) uses industrial wind to press the treated oil to the alkali treatment tank (4) through air pressure.

3. The sewage pool adaptive oil recovery device according to claim 1, characterized in that: A stirrer (41) is provided inside the alkali treatment tank (4), and a vent line (42) is provided on the top of the alkali treatment tank (4).

4. The adaptive oil recovery device for sewage pool according to claim 1, characterized in that: The dehydration bag (51) is connected to a sewage purification tank, and an oil discharge line (52) is provided at the bottom of the secondary dehydration tank (5) away from one end of the inlet pipeline.

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