Light oil recovery device

Abstract

The utility model relates to a light oil recovery device and belongs to the field of chemical engineering. A light oil recovery device comprises a waste water tank, a sewage pump, a recovery tank and a recovery pump, an oil separation plate is arranged in the middle of the interior of the waste water tank, the interior of the waste water tank is changed into a communicating vessel structure, and the interior of the waste water tank is divided into an oil liquid cavity and a waste water cavity; limiting blocks are arranged on the two sides of the middle of the oil cavity, a floating plate is arranged above the limiting blocks, and an absorption nozzle is fixed to the floating plate. A wastewater discharge line penetrates through the floating plate from the top of the wastewater tank to the middle lower part in the wastewater tank, and a water discharge port is below the limiting block; the wastewater delivery line is arranged from the lower part of the wastewater cavity and is connected to the sewage pump; the absorption nozzle is connected with an inlet pipeline of a recovery tank through a hose, an ejector is arranged at the top of the recovery tank, and the bottom of the recovery tank is connected with a recovery pump. The light oil recovery device is remarkable in light oil recovery effect, simple and practical in structure and high in applicability.

Description

Technical Field

[0001] The utility model relates to a light oil recovery device, belonging to the chemical industry field. Background Art

[0002] In current chemical production, light oil is a good solvent and refrigerant, and is widely used in various chemical production processes. Process wastewater generated in chemical production is generally directly collected into a wastewater tank, and then the wastewater is pumped to a sewage treatment unit through a wastewater pump for treatment. When the process fluctuates, it is easy to cause the light oil content in the wastewater to exceed the standard, impacting the sewage treatment unit and causing environmental protection accidents and safety accidents. Summary of the Invention

[0003] According to the problems described in the background, the problem to be solved by the utility model is:

[0004] Existing wastewater treatment cannot quickly recover light oil, resulting in environmental protection risks and safety risks.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A light oil recovery device includes a wastewater tank, a sewage pump, a recovery tank, and a recovery pump. A partition plate is arranged at the middle position inside the wastewater tank, changing the inside of the wastewater tank into a communicating vessel structure, and dividing the inside of the wastewater tank into an oil liquid chamber and a wastewater chamber; limiting blocks are arranged on both sides in the middle of the oil liquid chamber, a floating plate is arranged above the limiting blocks, and an absorption nozzle is fixed on the floating plate; a wastewater discharge line passes through the floating plate from the top of the wastewater tank to the lower middle part inside the wastewater tank, and the drainage outlet is below the limiting blocks; the wastewater external delivery line is arranged starting from the lower part of the wastewater chamber and is connected to the sewage pump; the absorption nozzle is connected to the inlet pipeline of the recovery tank through a hose, a ejector is arranged at the top of the recovery tank, and the bottom of the recovery tank is connected to the recovery pump.

[0007] Preferably, the ejector uses low-pressure steam as the ejecting gas flow.

[0008] Preferably, the absorption nozzle is in a horn shape.

[0009] Preferably, a drainage line is arranged at the bottom of the recovery tank.

[0010] By changing the internal structure of the wastewater tank into a communicating vessel structure through the partition plate, based on the basic principle of oil-water separation, by setting the position of the drainage outlet of the wastewater discharge line, it is ensured that effective oil-water separation can be carried out in the oil liquid chamber of the wastewater tank, so that light oil will not enter the wastewater chamber. Then, by arranging the floating plate, the absorption nozzle always absorbs the uppermost layer of oil liquid, which has better purity than the oil liquid absorbed at a traditional fixed position; by arranging the limiting blocks, it is ensured that the floating plate will not move down excessively and absorb a large amount of wastewater into the recovery tank. An ejector is arranged at the top of the recovery tank to provide suction for absorbing the oil liquid in the wastewater tank.

[0011] The beneficial effects of the present utility model are as follows:

[0012] The present utility model has remarkable light oil recovery effect, simple and practical structure, and strong applicability.

[0013] The present utility model reduces the pressure of sewage treatment and reduces the possibility of environmental protection accidents. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the present utility model

[0015] In the figure: 1 is a waste water tank; 2 is a sewage pump; 3 is a recovery tank; 4 is a recovery pump; 5 is a waste water discharge line; 6 is a waste water external delivery line; 7 is an absorption nozzle; 8 is a hose; 9 is an ejector; 11 is an oil separation plate; 12 is an oil liquid chamber; 13 is a waste water chamber; 14 is a limit block; 15 is a floating plate. Detailed Embodiment

[0016] Embodiment 1

[0017] A light oil recovery device includes a waste water tank 1 and a sewage pump 2, and also includes a recovery tank 3 and a recovery pump 4. An oil separation plate 11 is arranged at the middle position inside the waste water tank 1 to change the inside of the waste water tank into a communicating vessel structure, and the inside of the waste water tank 1 is divided into an oil liquid chamber 12 and a waste water chamber 13; Limit blocks 14 are arranged on both sides in the middle of the oil liquid chamber 12, a floating plate 15 is arranged above the limit blocks 14, and an absorption nozzle 7 is fixed on the floating plate 15; The waste water discharge line 5 passes through the floating plate 15 from the top of the waste water tank 1 to the middle and lower part inside the waste water tank 1, and the drain outlet is below the limit block 14; The waste water external delivery line 6 starts from the lower part of the waste water chamber 13 and is connected to the sewage pump 2; The absorption nozzle 7 is connected to the inlet pipeline of the recovery tank 3 through a hose 8, and an ejector 9 is arranged at the top of the recovery tank 3, and the bottom of the recovery tank 3 is connected to the recovery pump 4.

[0018] The ejector 9 uses low-pressure steam as the ejecting air flow.

[0019] The absorption nozzle 7 is in a horn shape.

[0020] A drain line is arranged at the bottom of the recovery tank 3.

[0021] The waste water is discharged from the waste water discharge line into the oil liquid chamber of the waste water tank, the oil liquid and the waste water in the waste water are separated, the oil liquid goes upward, and the water is pressed into the waste water chamber by the principle of the communicating vessel, and then sent to the sewage pump through the waste water external delivery line and then sent to the sewage treatment station; The floating plate floats above the oil liquid, and the absorption nozzle on the floating plate sucks the separated oil liquid into the recovery tank and then recovers it through the recovery pump.

[0022] Regularly open the drain line at the bottom of the recovery tank to drain water, and check whether there is oil liquid accumulated at the top of the waste water chamber. Ensure the stable and good operation of the equipment.

Claims

1. A light oil recovery device, comprising a waste water tank (1) and a sewage pump (2), characterized in that, It also includes a recovery tank (3) and a recovery pump (4). An oil separation plate (11) is arranged at the middle position inside the wastewater tank (1), changing the inside of the wastewater tank into a communicating vessel structure and dividing the inside of the wastewater tank (1) into an oil liquid chamber (12) and a wastewater chamber (13); limiting blocks (14) are arranged on both sides of the middle part of the oil liquid chamber (12), a floating plate (15) is arranged above the limiting blocks (14), and an absorption nozzle (7) is fixed on the floating plate (15); the wastewater discharge line (5) passes through the floating plate (15) from the top of the wastewater tank (1) to the lower middle part inside the wastewater tank (1), and the drain outlet is below the limiting blocks (14); the wastewater external delivery line (6) starts from the lower part of the wastewater chamber (13) and is connected to the sewage pump (2); the absorption nozzle (7) is connected to the inlet pipeline of the recovery tank (3) through a hose (8), a ejector (9) is arranged at the top of the recovery tank (3), and the bottom of the recovery tank (3) is connected to the recovery pump (4).

2. The light oil recovery device according to claim 1, characterized in that The ejector (9) uses low-pressure steam as the ejecting air flow.

3. A light oil recovery device according to claim 1, characterized in that, The absorption nozzle (7) is in a horn shape.

4. The light oil recovery device according to claim 1, wherein, A drain line is arranged at the bottom of the recovery tank (3).

Images