Back-flushing pre-filter

Abstract

The invention relates to a back-flushing pre-filter, which comprises an outer protective cover and a filter body arranged in the outer protective cover. The outer protective cover consists of a manualvalve handle, a plastic shield, a first plastic sheath, an adjustable decorative ring, a second plastic sheath and an external blow-down valve handle from top to bottom in order. The filter body includes a valve body component, a transparent cup cover, a filter component and a blow-down valve component. The valve body component includes a valve main body and a main body valve core set in the valve main body. The manual valve handle is set at the top of the valve body component, linkage with the main body valve core can be realized by rotating the manual valve handle, and linkage with the blow-down valve component can be realized by rotating the external blow-down valve handle. A water inlet and a water outlet are respectively disposed on the left side and right side of the valve main body, and extend out of the outer protective cover respectively. When the filter body is in a normal working state, the main body valve core inside is in an off state, and when the main body valve core rotates by 180 degrees, the filter body can be in a back-flushing state.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a technology for backwashing a pre-filter. Background technique [0002] With the advancement of science and technology and the improvement of people's living standards, people began to have higher requirements for water and dietary health in daily life. Due to secondary pollution such as rust and sediment in the water supply of the city, the water quality of household water deteriorates and the control of water equipment fails, and the life of other household appliances involving water is shortened, and even a huge safety hazard is generated. Therefore, From the perspective of the general environment, every household needs to install a pre-filter to improve water quality and protect household water equipment. The pre-filter is the nemesis of secondary pollution and a reliable impurity filtering device. [0003] At present, the pre-filters in the market mainly include f...

AI Technical Summary

Problems solved by technology

[0004] The flushing strength of the pre-filter is very weak, and the filter element is easy to be blocked. Not only can the small impurities not be washed out, but they are embedded deeper and tighter in the filter element, which is easy to cause secondary pollution. Consumers need to open the shell to remove it. The filter element is taken out and cleaned with a toothbrush, which is time-consuming and labor-intensive

[0005] The structure of the siphon type pre-filter is complicated and the washing is not thorough. If the water quality is poor, the impurities will be embedded deeper and tighter in the filter element, which will eventually cause the filter element to block and cause secondary pollution. Once the filter element is blocked, it will be very difficult to maintain

Images