CN205235584U - High -efficient whirl deoiling device - Google Patents

Abstract

The utility model provides a high-efficiency swirl oil removal device, which has high oil removal efficiency and simplifies the oily sewage treatment process. A high-efficiency cyclone oil removal device, including an outer tank, an inner tank, an oil collector, a hydrocyclone and a filter box; the upper part of the outer tank is provided with a water overflow port and an oil overflow port, and the lower part is provided with an oil discharge pipe, a sewage pipe and a drainage pipe The inner tank is located in the outer tank, and the inner tank is equipped with an oil collector, a hydrocyclone, a sedimentator and a filter box from top to bottom. The filter box is connected to the oil discharge pipe, and the hydrocyclone is connected to the water inlet pipe to collect oil. The device is connected with the oil discharge pipe; there is a pump at the bottom of the outer tank, and the pump is connected to the inner tank through a water pipe, and a return pipe with a control valve is arranged between the outer tank and the inner tank.

Description

High-efficiency cyclone degreasing device

technical field

The utility model relates to an oil-water separation device, in particular to a high-efficiency swirl oil removal device.

Background technique

The pollution of oil to the environment is mainly manifested in the serious impact on the ecosystem and the natural environment. The buoyant oil flowing into the water body will hinder the reoxygenation of the atmosphere after forming an oil film, and cut off the source of oxygen in the water body; while the emulsified oil and dissolved oil in the water, due to the action of aerobic microorganisms, consume the dissolved oxygen in the water during the decomposition process, Make the water body form anoxic state, increase the carbon dioxide concentration in the water body, and reduce the pH value of the water body to below the normal range, so that fish and aquatic organisms cannot survive. When the oily wastewater flows into the soil, due to the adsorption and filtration of oil pollution by the soil layer, an oil film will also be formed on the soil, allowing air to penetrate, hindering the proliferation of soil microorganisms, and destroying the aggregate structure of the soil layer. The discharge of oily wastewater into urban drainage pipes will affect both drainage equipment and urban sewage treatment plants. The oily concentration of mixed sewage flowing into biological treatment structures should usually not exceed 30-50 mg/L, otherwise it will affect the activation of sludge and biofilm. normal metabolic process.

For highly oily sewage (oily sewage discharged from oil refineries, petrochemical enterprises, etc.), the traditional treatment process generally adopts a regulating tank + two-stage grease trap, and then enters the air intake floating oil removal system to ensure that the oil content in the effluent is below 30-50mg/L And then into the biochemical treatment system. This treatment process is more thorough in oil removal and stable in effluent, and has been used until now. However, this process has the disadvantages of complex process, large floor area, and high investment. If the high-efficiency cyclone degreasing device is used, it can replace the three processes in the traditional process-regulating pool + two-stage grease trap, and the effluent water quality is better. , The collected oil has high purity and low water content.

The traditional treatment equipment has the following problems: (1) The treatment process is complicated; (2) It occupies a large area, the amount of civil engineering is large, and the cost is high; (3) It is difficult to collect the dirty oil on the surface of the sedimentation tank, and the sludge at the bottom of the tank needs to be completely discharged. (4) Sloping plate (pipe) grease traps are prone to the problem of oil stains adhering to the sloping plate (pipe) during operation, which affects the degreasing effect.

Utility model content

The purpose of the utility model is to provide a high-efficiency swirl oil removal device, which has high oil removal efficiency and simplifies the oily sewage treatment process.

In order to achieve the above object, the technical scheme adopted by the utility model is as follows:

A high-efficiency cyclone degreasing device, including an outer tank, an inner tank, an oil collector, a hydrocyclone and a filter box; the upper part of the outer tank is provided with a water overflow port and an oil overflow port, and the lower part is provided with an oil discharge pipe, a sewage pipe and a drainage pipe Pipe; the inner tank is located in the outer tank, and the inner tank is equipped with an oil collector, a hydrocyclone, a settler and a filter box from top to bottom. The filter box is connected to the oil discharge pipe, and the hydrocyclone is connected to the water inlet pipe. The device is connected to the oil discharge pipe; a pump is installed at the bottom of the outer tank, and the pump is connected to the inner tank through a water pipe, and a return pipe with a control valve is arranged between the outer tank and the inner tank.

Further, the outer tank has an inner and outer double-layer structure, and a heating pipe is arranged between the inner and outer layers.

Furthermore, the filter box is divided into a coarse filter part and a fine filter part by a partition.

The beneficial effects of the utility model:

(1) The collected waste oil has high purity and low water content, and the water content is much lower than the water content (30-50%) of the floating oil discharged from the traditional grease trap, and the water content can reach below 3%, which can be directly refined;

(2) Normal operation can be maintained during oil collection and mud discharge operation, and the facility utilization rate is high.

(3) It simplifies the tedious operation steps such as shutting down the whole tank, withdrawing water, and emptying the whole tank for sludge discharge at the bottom of the tank. Oil collection or mud discharge is easy to operate, and the labor intensity is low. It only needs one operator to open and close one valve once.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model.

In the figure 1. Oil collector, 2. Hydrocyclone separator, 3. Water pipe, 4. Filter box, 5. Water inlet pipe, 6. Pump, 7. Return water pipe, 8. Drain pipe, 9. Control valve, 10. Overflow port, 11. Oil overflow port, 12. Inner tank, 13. Outer tank, 14. Oil discharge pipe, 15. Sewage pipe, 16. Heating pipe, 17. Precipitator.

detailed description

In combination with the accompanying drawings in the embodiments of the utility model, the utility model is further clearly and completely described, and the described embodiments are only a part of the embodiments of the utility model, rather than all embodiments.

A high-efficiency cyclone oil removal device, comprising an outer tank 13, an inner tank 12, an oil collector 1, a hydrocyclone 2 and a filter box 4; the upper part of the outer tank 13 is provided with a water overflow port 10 and an oil overflow port 11, and the lower part is There are oil discharge pipe 14, sewage pipe 15 and drain pipe 8; the inner tank 12 is located in the outer tank 13, and the inner tank 12 is provided with an oil collector 1, a hydrocyclone 2, a precipitator 17 and a filter box 4 from top to bottom , the filter box 4 is connected to the oil discharge pipe 14, the hydrocyclone 2 is connected to the water inlet pipe 5, the oil receiver 1 is connected to the oil discharge pipe 14; the bottom of the outer tank 13 is provided with a pump 6, and the pump 6 is connected to the inner tank 12 through the water pipe 3, and the outer A return pipe 7 with a control valve 9 is provided between the tank 13 and the inner tank 12 .

In this embodiment, the outer tank 13 has an inner and outer double-layer structure, and a heating pipe 16 is arranged between the inner and outer layers.

In this embodiment, the filter box 4 is divided into a coarse filter part 4-1 and a fine filter part 4-2 through a partition, and the filter material in the coarse filter part includes the following raw materials in parts by weight: 15 parts of zeolite, 10 parts of PPS fiber, quartz stone 10. 6 parts of wood pulp-based cellulose, 5 parts of volcanic rock and 3 parts of closed-cell hollow glass microspheres with a particle size of 5-10um; the filter material in the fine filter part includes the following raw materials by weight: 15 parts of attapulgite clay, bentonite 15 parts, 8 parts of ceramic ring, 6 parts of activated carbon, 10 parts of graphite powder and 10 parts of biochemical cotton.

The working principle of the utility model: the oily sewage enters the separation tube bundle of the inner tank 12 through the water inlet pipe 5, and the cyclone separator 2 is mixed with the medium in the cyclone and gas distribution device to form a superimposed power, and use The specific gravity achieves hydrocyclone separation. The efficiency of separating the medium through the high-efficiency cyclone degreasing device is greatly improved, and at the same time, the factor of low separation efficiency caused by the fluctuation of the primary pump pressure hydrodynamic force caused by the instability of the incoming water is solved. The separated oil is collected in the upper part. Collector 1 collects once, and the medium after mud and water separation passes through the precipitator 17 and the filter box 4, where the sludge is separated and settled at the bottom of the tank and stored, and the water separated by the inner tank 12 is pumped into the outer tank 13 for storage .

The above only describes the basic principle and preferred implementation of the utility model, and those skilled in the art can make many changes and improvements according to the above description, and these changes and improvements should belong to the protection scope of the utility model.

Claims (3)

1. A high-efficiency cyclone degreasing device, characterized in that it includes an outer tank (13), an inner tank (12), an oil collector (1), a hydrocyclone (2) and a filter box (4); The upper part of the tank (13) is provided with an overflow port (10) and an oil overflow port (11), and the lower part is provided with an oil discharge pipe (14), a sewage pipe (15) and a drain pipe (8); the inner tank (12) is located in the outer tank ( 13), the inner tank (12) is equipped with an oil collector (1), a hydrocyclone (2), a settler (17) and a filter box (4) from top to bottom, and the filter box (4) is connected to the row The oil pipe (14), the hydrocyclone (2) are connected with the water inlet pipe (5), the oil receiver (1) is connected with the oil discharge pipe (14); the bottom of the outer tank (13) is provided with a pump (6), and the pump (6 ) is connected to the inner tank (12) through the water pipe (3), and a return pipe (7) with a control valve (9) is arranged between the outer tank (13) and the inner tank (12). 2. The high-efficiency cyclone degreasing device according to claim 1, characterized in that: the outer tank (13) has an inner and outer double-layer structure, and a heating pipe (16) is arranged between the inner and outer layers. 3. The high-efficiency cyclone degreasing device according to claim 1 or 2, characterized in that the filter box (4) is divided into a coarse filter part (4-1) and a fine filter part (4-2) through a partition.