A spool of a three-position three-way valve

Abstract

The invention relates to a valve core of a three-position three-way valve. The valve core comprises a cylindrical body internally provided with a first water flow passage in the axial direction; an annular bush rotatably sleeves the body; a second water flow passage is formed between the bush and one end of the body under the wrapping of a valve; a third water flow passage is formed between the bush and the other end of the body. The bush can detachably sleeve the body of the valve core and the bush can rotate relative to the body without sliding, so the valve core has the advantage that the thickness of the plastic valve core can be controlled compared with the mode that the bush is integrally molded on the body of the valve core, the surface of the plastic valve core is smooth, the airtightness between the valve core and the valve is better, the valve core is not easy to deform and can not cause the staggering of the water flow passages when moving in the valve, the plastic bush can be replaced and the product cost and the use cost are greatly reduced.

Description

technical field [0001] The invention relates to a valve core, in particular to a valve core used for a regulating valve on a water purifier. Background technique [0002] Water is a life resource, and all life activities are inseparable from water. However, with the rapid development of urbanization and industrialization, water resources are constantly polluted. With the improvement of people's awareness of health care, water purifiers are used by more and more people. to ensure the quality of drinking water. The water purifier is to design three channels in the machine, which are forward washing, backwashing and purified water channels. The three go their own way and let the water flow. When ordinary domestic water passes through the forward washing and backwashing channels, it passes The filtering effect of the filter element in the machine discharges the sewage and obtains purified water. [0003] As an important part of the water purifier, the valve is directly install...

AI Technical Summary

Problems solved by technology

The bushings on the spool of the existing three-position three-way valve are all integrally formed with the spool, resulting in a relatively thick spool, which is easily deformed when the spool moves in the valve body, which leads to disordered water flow channels and affects the cleanliness. If the purification effect of the water purifier is low, it is necessary to replace the entire deformed valve core so as not to affect the purification effect of the water purifier and increase the cost of use.

[0004] Have again, existing spool is made of copper, on the one hand cost is higher, on the other hand copper is easy to corrode, gets rusty, produces copper ion, thereby pollutes water

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