Liquid purification device

Abstract

The invention provides a liquid purification device. The liquid purification device comprises a shell and a filter unit, wherein a containing cavity is defined by the shell, and a liquid inlet and a liquid outlet through which liquid enters and exits the containing cavity are formed in the two ends of the shell; at least one filter unit is arranged in the containing cavity in a driven rotating mode so as to divide the containing cavity into at least two filtering cavities; solid impurities in liquid can be blocked in the corresponding filtering cavities due to interception of the filter unit; and sewage draining outlets communicating with the bottoms of the filtering cavities are formed in the shell and correspond to the upstream portions of the filter unit. According to the liquid purification device disclosed by the invention, when liquid flows through the filter unit, solid impurities with relatively large specifications can be retained in the corresponding filtering cavities due to interception of the filter unit, solid impurities with relatively small specifications flow into the next filtering cavity, and the solid impurities can be discharged through the sewage draining outlets; and the filter unit is arranged to be rotatable, so intercepted solid substances can be washed into liquid to leave the filter unit, so the filtering efficiency of the filter unit is improved.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment equipment, in particular to a liquid purification device. Background technique [0002] In the prior art, the waste liquid contains solid impurities, such as branches, leaves, floating matter or particles of different particle sizes. In order to recover the waste liquid, it is necessary to use a filter device to filter and remove impurities in the waste liquid. [0003] At present, most of the filtration technologies used in liquid purification are still relatively traditional, such as sand filter, filter cotton, etc. This traditional liquid purification method has the following technical problems: First, the filtration speed is slow, the floor space is large, and backwashing It is also very complicated; the second is that the liquid purification efficiency is low, and the filter structure needs to be replaced frequently, which increases the cost of liquid purification and is limited...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the filtration technologies used in liquid purification are still relatively traditional, such as sand filter, filter cotton, etc. This traditional liquid purification method has the following technical problems: First, the filtration speed is slow, the floor space is large, and backwashing It is also very complicated; the second is that the purification efficiency of liquid is low, and the filter structure needs to be replaced frequently, which increases the cost of liquid purification and is limited in promotion

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