Water treatment device capable of scraping membrane surface sludge

Abstract

The invention discloses a water treatment device capable of scraping membrane surface sludge. The device comprises a treatment tank, a driving unit, a water production pipe, a filtering unit, a fastening unit, and a scrapping unit. The water production pipe is connected with a transmission shaft of the driving unit. The filtering unit comprises a plurality of filter bags stacked and sleeved on the water production pipe with a watertight manner. The fastening unit comprises a plurality of connection-guide plates and watertight components. Two connection-guide plates form a group, and are staggered and embedded with the filter bags. The scrapping unit comprises a plurality of stirring plates and brush bodies. The stirring plates are respectively sandwiched between the filter bags and the connection-guide plates. The brush bodies are arranged on the outer side of the stirring plates, and contact the filter bags. When the driving unit drives the filtering unit on the water production pipe to rotate, with a water resistance effect, the brushes hinged on the stirring plates can automatically perform scrapping and cleaning upon the surfaces of the filter bags.

Description

technical field [0001] The invention relates to a water treatment device, in particular to a water treatment device capable of scraping off the sludge on the surface of the filter membrane, which avoids the membrane surface of the filter bag from being scratched and prolongs the operation cycle of the filter bag. Background technique [0002] In order to increase the effective interception area of ​​the filter membrane group and increase the water yield, the previous spiral-wrapped filter membrane group has been developed into a flat capsule filter bag. Collected on a production water pipe, it does not need a hard casing to cover the outside, but is only locked with a pressure plate at both ends, so the contact area of ​​the sewage is quite high, and the filter unit after the filter bag series is small in size, More importantly, the sewage can diffuse and infiltrate the filter bag in a sweeping flow of horizontal flow, so the filter bag not only has a large flow rate and a h...

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Problems solved by technology

[0004] Although the rotation of the flat capsule filter bag in the water inlet tank can achieve a certain effect of inhibiting the formation of surface sludge, but because there are many sources of feed water, there are still various types of feed water in addition to the general rubber plume, impurities and solid particles. Organic oil-like, when the feed water full of oil comes into contact with the filter bag, and then adheres to the membrane surface of the filter bag, it will seriously affect the water flow rate of the filter bag, especially in the face of feed water with thick oil At this time, the entire filter unit will be covered by the oil film. Even if the filter bag is washed with high-pressure water column, the thick oil film cannot be removed. In addition to greatly reducing the flow rate of the product water, the operation cycle of the filter bag will also be shortened.

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