Hydraulic Positioner

We are doing hydraulic positioner for sale. Our company which gather research and development, manufacture and sale, majoring in the line of automatic welding equipment, cutting equipment, milling equipment, environmental protection equipment.

The positioner machine is the main accessory of the control valve, which is usually used together with the pneumatic control valve. It receives the output signal of the regulator, and then controls the pneumatic control valve with its output signal. When the control valve acts, the displacement of the valve rod is fed back to the positioner through the mechanical device, and the valve position status is transmitted to the upper system through the electrical signal.

The utility model relates to a hydraulic positioner, which comprises a fixed end component and a movable end component. A compression spring is arranged between the fixed end component and the movable end component, which is characterized in that: the fixed end component comprises a cylinder and a fixed seat, the cylinder is fixedly connected with the fixed seat, the two ends of the cylinder are respectively provided with a first oil seal and a second oil seal, and the inner part of the cylinder is arranged between the first oil seal and the second oil seal to store and discharge liquid The movable end assembly includes a piston, a mounting base and a control valve assembly, one end of the piston is fixedly connected with the mounting base, the other end of the piston passes through the first oil seal and then extends into the oil storage cavity, the position between the first oil seal and the second oil seal on the piston is provided with a sealing assembly matching with the inner wall of the oil cylinder, and the oil storage cavity between the first oil seal and the sealing assembly in the oil cylinder is the second The piston is provided with a first damping hole communicated with the first oil cavity and a second damping hole communicated with the second oil cavity. 

Hydraulic Positioner

The control valve assembly is used to control the conduction and blocking between the first damping hole and the second damping hole; the control valve assembly includes a switch, a valve rod, a sealing steel ball and a steel ball seat The piston is provided with a first holding cavity and a second holding cavity, and the first holding cavity and the second holding cavity are communicated through a valve hole, which is located in the first damping hole between the valve and the second damping hole, the sealing steel ball, the steel ball seat, the return spring and the spring seat are installed in the second holding cavity in sequence. The sealing steel ball is tightly matched with the valve hole under the elastic force of the return spring. The valve rod is movably installed in the first holding cavity, one end of the valve rod is connected with the switch piece, and the other end of the valve rod is connected with the sealing steel ball after passing through the valve hole.