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Prefilter

A pre-filter and filter screen technology, applied in the field of filters, can solve problems such as poor cleaning effect

Active Publication Date: 2012-12-19
HAINING SHUIXIANG WATER PURIFICATION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the current pre-filter adopts a forward flushing method, and its cleaning effect is poor.

Method used

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Embodiment Construction

[0035] The invention discloses a pre-filter to improve the flushing effect of the filter screen.

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] see Figure 2-Figure 7 , figure 2 Structural schematic diagram of the pre-filter provided for the embodiment of the present invention; image 3 Schematic diagram of the cross-sectional structure of the pre-filter during normal operation provided by the embodiment of the present invention; Figure 4 Schematic diagram of the cross-sectional structure of ...

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Abstract

The invention discloses a prefilter which comprises a copper cover, a cylinder, a water drain valve assembly, a filtering screen framework and a first filtering screen and further comprises a water distributor, a lifting device and a bush. The copper cover is provided with a medium inlet and a medium outlet; the cylinder is provided with a sewage outlet; the water drain valve assembly is arranged at the sewage outlet; the filtering screen framework is arranged in the cylinder; the first filtering screen is arranged on the filtering screen framework; the water distributor is arranged in the copper cover, connected with the filtering screen framework and provided with a branched cavity sealing ring and a backwash switching hole; the copper cover is provided with a branched cavity raised ring which can in sealing fit with the branched cavity sealing ring; one end of the lifting device extends out of the copper cover, and the other end is connected with the water distributor; the bush is arranged in the copper cover, is in sealing fit with the water distributor and is provided with a backwash through hole; and when branched cavity sealing ring moves to contact the branched cavity raised ring, the stoke movement of the sealing ring is equal to the stoke movement of the backwash switching hole when the backwash switching hole moves to coincide with the backwash through hole. When the prefilter is switched to the wash state, the prefilter back washes to the outside from the inner wall of the first filtering screen, so that the prefilter has a good backwash effect.

Description

technical field [0001] The invention relates to the technical field of filters, in particular to a pre-filter. Background technique [0002] Before the tap water reaches each user through the pipe network, it passes through many pipelines. There are many impurities such as sediment, rust, and floating objects in the pipelines. If they are not filtered, they will cause water pollution. Using a pre-filter to filter at the source of household water can not only effectively eliminate secondary pollution and reduce water pollution diseases, but also remove solid impurities, protect the safety of the pipeline system, and reduce system maintenance costs. [0003] Such as figure 1 As shown, the pre-filter of the prior art includes a copper cover 1 with water inlets and water outlets on both sides, a cylinder 3 fixedly connected with the copper cover 1, a filter screen skeleton 5 installed in the cylinder 3, The filter screen 4 fixedly installed on the filter screen frame 5, the lo...

Claims

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Application Information

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IPC IPC(8): B01D29/19B01D29/68B01D29/50
Inventor 胡效军张敏
Owner HAINING SHUIXIANG WATER PURIFICATION EQUIP
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