Pneumatic cylinder for controlling valve rod

Abstract

The invention discloses a pneumatic cylinder for controlling a valve rod. A piston is installed in a cylinder body, cylinder covers are installed at the two ends of the cylinder body, the piston is provided with two piston columns, the circle centers of one end faces of the two piston columns are connected through a connecting rod, the circle centers of the other end faces of the two piston columns are provided with piston rods respectively, the two piston rods penetrate through the cylinder covers at the two ends of the cylinder body respectively, and air inflow nozzles and air exhaust nozzles are arranged on the end faces of the cylinder covers. Dustproof covers are installed outside the cylinder covers, the dustproof covers are installed on the cylinder body, and the center liens of the cylinder body, the piston and the piston rods are arc lines. The pneumatic cylinder for controlling the valve rod is simple in structure, more reliable, small in size and convenient to install, and is provided with one cylinder body and the double piston rods, and by means of the pneumatic cylinder, more energy is saved, and more manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the field of valves, in particular to a pneumatic cylinder for controlling a valve stem. 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. [0003] 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. [0004] The control of the valve can adopt a variety of transmission methods, such as manual, electric, hydraulic, pneumatic, turbine, electromagnetic, electro-hydraulic, electro-hydraulic, gas-hydraulic, spur gear, bevel gear...

AI Technical Summary

Problems solved by technology

[0005] In the control of the valve, the pneumatic control valve is a convenient, reliable and environmentally friendly pneumatic control mechanism, but most of the existing valve pneumatic control uses two pneumatic cylinders, which makes the control mechanism of the valve more complicated, and the piston in the pneumatic cylinder The rod can only run in a straight line, so that the opening and closing of the valve is not linear enough, and the torque change of the control valve is more complicated

Images