Valve rod extension device

Abstract

The invention discloses a valve rod extension device. The device comprises a valve body, a valve rod and a hand wheel. The valve rod is arranged at the top of the valve body. The hand wheel is arranged at the top of the valve rod. A first supporting plate and a second supporting plate are arranged on the two sides of the valve body correspondingly. A connecting plate and a fixing plate are arranged at the tops of the lateral sides, corresponding to each other, of the first supporting plate and the second supporting plate correspondingly. A U-shaped clamping plate matched with the valve rod isarranged on the side, away from the first supporting plate, of the connecting plate. A first motor is arranged on the side, perpendicular to the second supporting plate, of the fixing plate. A first rotary shaft is arranged on the side, away from the fixing plate, of the first motor. A turnplate is arranged on the side, away from the first motor, of the first rotary shaft. The valve rod extensiondevice has the beneficial effects that the length of the valve rod is regulated conveniently, application is convenient, the structure is simple, and the valve body is convenient to use.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a valve stem extension device. Background technique [0002] The valve is a control component in the fluid delivery system, which has functions such as cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or overflow pressure relief. Valves used in fluid control systems range from the simplest cut-off valves to various valves used in extremely complex automatic control systems, with a wide variety of varieties and specifications. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. Valves are also divided into cast iron valves, cast steel valves, stainless steel valves, chrome-molybdenum steel valves, chrome-molybdenum-vanadium steel valves, duplex steel valves, plastic valves, non-standard custom-made valves, etc. accord...

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Problems solved by technology

[0003] However, the above-mentioned valve stems are all fixed. When the gate stem is to be adjusted, the length of the gate stem has limitations, and the length cannot be adjusted according to the demand, so that various needs cannot be met; and the adjustment of the length of the gate stem cannot be increased. , it is inconvenient to adjust the length of the door rod, and it is not convenient to use the valve body

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