A centralized control valve device

Abstract

The invention discloses a centralized control valve device, and belongs to the field of valves. The device comprises a valve body, wherein an upper cover is connected to the upper end of the valve body; a first valve rod is arranged at the inner side of the valve body; a second valve rod is rotatably connected to the upper end of the first valve rod; a through hole is formed in the upper end of the upper cover, and the second valve rod is inserted into the through hole and extends to the outer side of the upper cover; a handle is rotatably connected to the upper end of the second valve rod; awater volume adjusting block is fixedly connected to the lower end of the first valve rod; a fixing ring sleeves the outer side of the first valve rod; a compressing spring which sleeves the outer side of the first valve rod is arranged between the fixing ring and the water volume adjusting block; and a pair of limiting blocks is fixedly connected to the inner sidewall of the valve body. Accordingto the device, a sealing plug and a valve seat can be tightly closed under the effect of the compressing spring, and meanwhile, the abrasion, caused by rotating friction relative to a valve seat, ofthe sealing plug can be reduced, and as a result, the water resource waste is reduced.

Description

Technical field [0001] The invention relates to the field of valves, and more specifically, to a centralized control valve device. Background technique [0002] A valve is a mechanical device that controls the flow, direction, pressure, temperature, etc. of the flowing fluid medium. The valve is a basic component in the pipeline system. Valve fittings are technically the same as pumps and are often discussed as a separate category. The valve can be operated manually or by hand wheel, handle or pedal, and can also be controlled to change the pressure, temperature and flow rate of the fluid medium. Valves can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In more complex control systems, automatic control valves are used in accordance with the need for external input (that is, to adjust the changing set point of the flow through the pipeline). [0003] The existing valve with water volume adjustmen...

AI Technical Summary

Problems solved by technology

[0003] When the existing valves with water volume adjustment function are in use, there is a problem that the sealing plug and the valve seat are not tightly closed, especially the rotary valves that can adjust the water volume. When people close the valve, the rotation is not in place. If it is not in place, it is easy to cause waste of water resources, and when the valve is turned to close the water flow, the sealing plug is prone to wear due to friction with the valve seat, resulting in an untight seal

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