Multi-layer filtering system and front-back flushing and cleaning pre-filter

Abstract

The invention relates to a multi-layer filtering system and front-back flushing and cleaning pre-filter which comprises a fixed valve body, a control device is arranged at the top of the fixed valve body, a limiting block is arranged in the control device, a rotating bearing is fixedly connected in the control device, a connecting rod is fixedly connected in the rotating bearing, the outer portion of the connecting rod is fixedly connected with a locking clamping ring, and the bottom of the connecting rod is fixedly connected with a front-back conversion device. According to the multi-layer filtering system and front-back flushing and cleaning pre-filter, the connecting rod is pulled to drive the front-back conversion device to rotate in the fixed valve body, and the water inlet and outlet position is changed, so that water entering the water inlet is directly poured into the filtering device, the surface of the filtering device can be flushed through water flow, and the back flushing and cleaning effect is achieved; and harmful substances attached to the surface are impacted, so that the automatic cleaning effect is achieved.

Description

technical field [0001] The invention relates to the technical field of pre-filters, in particular to a multi-layer filter system and a pre-filter for front and back flushing cleaning. Background technique [0002] The pre-filter is the first coarse filtration device for the water in the whole house. It can filter large particles such as sediment, rust, insect eggs and red worms in the tap water. The pre-filter is generally installed at the front end of the pipeline, so the The word "front" is named, while "filter" refers to the basic principle of this type of equipment. [0003] With the improvement of the quality of life, people pay more attention to the substances they depend on. For example, the water commonly used in daily life was used directly in the past, but now it is only used after filtering. The pre-filter was born because of this, but the existing There is a single filtration in the pre-filter, which cannot effectively treat the water source well, cannot guarant...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a multi-layer filtration system and a pre-filter with front and back flushing cleaning, which has the advantages of multiple filtration and front and back cleaning, and solves the problems of the existing pre-filter. Secondary filtration can not effectively treat the water source well, cannot guarantee the safety of use, and the flushing effect of the device itself is poor, and cannot meet the effect of automatic cleaning. If the device is not cleaned for a long time, it will also cause secondary pollution to the water source, resulting in pre- The filter is inconvenient to use, which reduces the use efficiency and effect of the pre-filter

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