Automatic back flush water machine

Abstract

The invention relates to an automatic back flush water machine. The automatic back flush water machine comprises a filter, a drinking water line and a back flush water line, wherein the drinking waterline flows through the filter; the back flush water line and the drinking water line are arranged in parallel, the back flush water line is communicated with a water outlet end of the filter, and a wastewater outlet is formed in the back flush water line; a water diversion overpass and a wastewater discharge valve are arranged on the back flush water line; the wastewater discharge valve comprisesa vertical wastewater discharge valve housing and a wastewater discharge valve element, the wastewater discharge valve element is vertically arranged in the wastewater discharge valve housing and canslide up and down, two transverse through holes which are parallel vertically are formed in the wastewater discharge valve element, the water diversion overpass is provided with two layers, and the wastewater discharge valve housing is separately communicated with the upper layer and the lower layer of the water diversion overpass; the positions of the two through holes correspond to the upper communication position and the lower communication position of the water diversion overpass respectively; a water inlet end of the filter is provided with a water pressure sensor which controls movementof the wastewater discharge valve element according to the change of water pressure values. The automatic back flush water machine is simple in design, whether the valve element needs to be cleaned or not is determined by sensing the water pressure, the error is small, and back flush can be automatically completed.

Description

technical field [0001] The invention relates to a water machine for automatic backwashing, which belongs to the field of water machines. Background technique [0002] Many water machines on the market currently have two main problems: 1. After the water machine is used, it is often forgotten to clean and replace it. Now the water machine designed for automatic cleaning is controlled by several sets of battery valves and must be connected to the power supply. If it is not suitable for actual use, the cost of the water machine has also increased a lot; second, it cannot be accurately rinsed after the filter element is dirty; third, it uses the water flow sensor and timing device to judge the use of the filter element according to the change of water flow or the use time , to carry out backwashing, so the implementation error is large and inconvenient to use, and the structure is too complicated to be used by consumers. [0003] The Chinese patent whose publication number is C...

AI Technical Summary

Problems solved by technology

[0002] Many water machines on the market currently have two main problems: 1. After the water machine is used, it is often forgotten to clean and replace it. Now the water machine designed for automatic cleaning is controlled by several sets of battery valves and must be connected to the power supply. If it is not suitable for actual use, the cost of the water machine has also increased a lot; second, it cannot be accurately rinsed after the filter element is dirty; third, it uses the water flow sensor and timing device to judge the use of the filter element according to the change of water flow or the use time , to carry out backwashing, so the implementation error is large and inconvenient to use, and the structure is too complicated to be used by consumers

In addition, it is necessary to set up a pressure tank to complete backwashing, which is more complicated and has a large error

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