Bag type solid-liquid separation device and solid-liquid separation method

Abstract

The invention discloses a bag type solid-liquid separation device. The bag type solid-liquid separation device comprises an upper barrel (1), a lower barrel (2), a gate valve (3) located between the upper barrel (1) and the lower barrel (2), a driving device (4) located on the upper barrel (1) and a cloth bag mechanism (5) located in the upper barrel (1), wherein a transmission rod (7) of the driving device (4) penetrates through the upper barrel (1) and is connected with the cloth bag mechanism (5). In addition, the invention also discloses a method for carrying out solid-liquid separation by adopting the device. According to the device disclosed by the invention, a filter bag is reversed to shake off a solid material enriched on the filter bag, so the use of backwashing liquid is avoided, the moisture content of the solid material is low, the filter bag is not manually disassembled, operation efficiency is improved, and the risk that the material harms a human body is reduced. The device overcomes problems existing in the prior art in a targeted mode and can be applied to related industrial production.

Description

technical field [0001] The invention relates to a bag-type solid-liquid separation device and a separation method, belonging to the technical field of solid-liquid separation. Background technique [0002] Solid-liquid separation is the core unit in the chemical process. The methods to achieve solid-liquid separation mainly include sedimentation, filtration, flotation, etc., or a combination of several methods. Filtration is the most common solid-liquid separation method. It is based on the difference in particle size. Under the action of external force, the solid particles in the solid-liquid mixture are trapped on the medium, and the liquid is separated through the pores, so as to achieve the purpose of solid-liquid separation. . Because the filtration method is easy to operate and has high separation accuracy, filtration is often used in the case of high requirements for solid-liquid separation, and bag filtration is the most common filtration equipment. By adjusting the...

AI Technical Summary

Problems solved by technology

However, when the solid material in the bag reaches saturation, this traditional bag filter needs to manually take out the filter bag and pour out the solid material in the bag. If the solid material has a certain viscosity, it often needs to carry out rinse

[0005] CN 106944265 A discloses a bag-turning centrifuge, which realizes the bag-turning of the filter bag through complex transmission and moving shafts. Disadvantages such as small processing volume

[0006] When the traditional bag filter is faced with the saturation of solid materials in the filter bag, there are generally the following two solutions. One is to use the method of backwash to wash down the solid material in the filter bag, so as to realize the "regeneration" of the filter bag and recycle it. , backwashing will lead to a substantial increase in the liquid content of the solid material, reducing the efficiency of solid-liquid reduction; another method is to take out the filter bag and manually pour out the solid material in the filter bag. On the one hand, this method is The operation is complicated. On the other hand, when dealing with toxic and harmful solids and liquids, it will bring potential hidden dangers to the safety of the human body and the environment.

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