Structural improvement of piston assembly for water hydrant

Abstract

The invention discloses a structural improvement of a piston assembly for a water hydrant, which mainly has a water hydrant body. A valve chamber is arranged in the water hydrant body to assemble a water control valve. The water control valve is composed of a valve body, rubber pads at two sides of the valve body, a piston cylinder and a piston rod arranged in the valve body, a valve rod for operating the piston rod, a cap cover, a valve body top cover, and a knob for locking and operating the valve rod, wherein the outer diameter of the piston cylinder has waney irregular shape design, inletand outlet holes are formed in different parts thereof, the relative relationship of the piston rod can be changed to achieve water supply, water stop and water mixing ratio adjustment functions; thepiston cylinder is made up of a stainless steel base pipe and an externally wrapped plastic cylinder, so that it can greatly simplify its processing and reduce its material cost, and give better industrial utilization value without affecting its strength and function.

Description

technical field [0001] The invention relates to a structural improvement of a piston assembly of a water supply cock. Background technique [0002] Press, general water supply equipment often uses water supply plugs as the operation of supplying and stopping water, and such water supply plugs are usually connected with cold and hot water pipes respectively, and cooperate with the control operation of the water control valve inside the water supply plug to change the cold and hot water. The ratio of water inflow to achieve the control of water temperature, so that it can adjust the water temperature in response to different usage needs or water habits. [0003] In terms of structural design, the water control valve of the front water supply cock is mainly provided with a water supply cock body that can be connected to an external water supply pipeline. There is a tank room for the water control valve to be filled in the water supply cock body. The water control valve It is p...

AI Technical Summary

Problems solved by technology

[0004] However, the piston barrel of the aforementioned water supply cock water control valve is usually manufactured by turning stainless steel strips. In addition to the need to process a special-shaped outer diameter with unequal diameters, it is also necessary to process an inner diameter hole for the piston rod set. At the same time, the inlet and outlet holes are processed at the external predetermined position. The overall processing operation is quite complicated and time-consuming. In addition, the turning process has a considerable loss of materials, resulting in an increase in material costs and virtually affecting its overall production. The cost is not conducive to the economic benefits of industrial utilization. In addition, it is difficult to obtain an excellent airtight relationship between the metal surface of the piston assembly and the rubber pad. It is necessary to try to solve and improve

Images