Collection mechanism of oil in concentrated liquid and oil-water separation device

Abstract

The invention discloses a collection mechanism for oil in concentrated liquid. The collection mechanism used for receiving and treating the concentrated liquid generated from a previous generation portion comprises a flow guide plate, a water chamber and an oil collection chamber, wherein the flow guide plate extending obliquely downwards is arranged on the outer side of a strip-shaped liquid outlet of the previous treatment portion, the water chamber is arranged fixedly on the outer side of the liquid outlet, and the oil collection chamber is arranged fixedly in the water chamber. A side plate on the adjacent side of the oil collection chamber and the liquid outlet is kept at a set distance from the previous treatment portion, the upper end of the top of the side plate extends obliquely upwards along the direction away from the liquid outlet to form a bend section, and the upper side edge of the bend portion is lower than the upper side edge of the flow guide plate. The collection mechanism is integrated, demulsification, packing, a sloping plate and a water cavity for final oil collection and gathering of water filtered and treated at all stages are integrated, a cabinet-type structure is formed, the space is utilized reasonably, the best cooperation ratio of the packing and the sloping plate is realized, step-by-step effective cooperation is achieved, and overall oil removal efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of automobile painting, in particular to an oil collection mechanism and an oil-water separation device in a concentrated liquid. Background technique [0002] The pre-treatment of automobile painting is an important process line, and degreasing is the primary key process. In order to obtain good coating quality and meet the requirements of coating corrosion resistance and appearance decoration, it is necessary to separate oil and water from the degreasing liquid. The ultrafiltration membrane degreasing device has gradually been paid more and more attention to because of the relatively thorough degreasing, but there will be the following disadvantages when using the traditional degreasing liquid ultrafiltration membrane degreasing device: the ultrafiltration degreasing belongs to the method of circulating concentration, which increases the waste liquid. The concentration ratio is generally 30-40 times, and t...

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Problems solved by technology

[0002] The pre-treatment of automobile painting is an important process line, and degreasing is the primary key process. In order to obtain good coating quality and meet the requirements of coating corrosion resistance and appearance decoration, it is necessary to separate oil and water from the degreasing liquid. The ultrafiltration membrane degreasing device has gradually been paid more and more attention to because of the relatively thorough degreasing, but there will be the following disadvantages when using the traditional degreasing liquid ultrafiltration membrane degreasing device: the ultrafiltration degreasing belongs to the method of circulating concentration, which increases the waste liquid. The concentration ratio is generally 30-40 times, and the final waste liquid is discharged as a whole and treated as waste liquid; the oil content in the degreasing liquid of the coating line is generally controlled at 2000-3000PPM, and the oil content in the concentrated waste liquid is only 10%- 20%, the degreasing liquid of the active ingredient is discharged as waste liquid, and at the same time increases the cost of waste treatment, so the method of ultrafiltration to remove oil is not suitable for the coating line

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