Water meter control valve

Abstract

The invention discloses a water meter control valve. The water meter control valve comprises a shell and a water flow control mechanism located in the shell. The water flow control mechanism comprisesa valve stator and a valve rotor capable of rotating relative to the valve stator on the valve stator. The valve stator is provided with at least one liquid inlet. The valve rotor is provided with stop dogs. When the valve rotor rotates on the valve stator, the stop dogs open the liquid inlets in part of phase position and close the liquid inlets in other phase positions. The two liquid inlets ofthe valve stator are symmetrically distributed on the two sides of the center of the valve stator. The two stop dogs are arranged on the valve rotor. The positions of the two stop dogs mounted on thevalve rotor correspond to the liquid inlets of the valve stator. The liquid inlets of the valve stator and the stop dogs of the valve rotor are in a fan shape. The water meter control valve has the advantages of being simple in structure, long in service life, good in sealing performance and easy to automatically control.

Description

technical field [0001] The invention relates to a valve, in particular to a control valve used on a water meter. Background technique [0002] At present, there are two main types of valves on water meters, one is a ball valve type valve, which controls the size of the water flow by adjusting the gap between the ball and the outlet of the channel. The valve has poor sealing performance and short service life. Moreover, the phenomenon of water leakage is easy to occur. In addition, this kind of valve cannot realize automatic control of the water meter, thereby increasing the trouble in operation. Another valve is called a pilot valve, which is often referred to as a diaphragm valve. This valve controls the water flow by placing a cylindrical diaphragm on the conical plug and adjusting the gap between the diaphragm and the outlet of the channel. The valve is prone to blockage, and the diaphragm often cannot be used normally due to wear or crushing. People need to replace the ...

AI Technical Summary

Problems solved by technology

[0002] At present, there are mainly two types of valves on water meters used by people. One is a ball valve type valve. This valve controls the size of the water flow by adjusting the gap between the ball and the outlet of the channel. The valve has poor sealing performance and short service life. And it is prone to water leakage. In addition, this kind of valve cannot make the water meter realize automatic control, which increases the trouble in operation.

Another type of valve is called pilot valve, which is often called a diaphragm valve. This valve controls the water flow by putting a cylindrical diaphragm on the tapered plug and adjusting the gap between the diaphragm and the outlet of the channel. The valve is prone to blockage, and the diaphragm often cannot be used normally due to wear or crushing. People need to replace the diaphragm frequently, which is very inconvenient to use.

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