Pneumatic butterfly valve installation and debugging method and matters needing attention

Pneumatic butterfly valve installation and debugging method and matters needing attention

Pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve. Pneumatic butterfly valve adopts circular butterfly plate and valve rotation, to achieve the performance of opening and closing. Pneumatic valves that provide operation are mainly used as stop valves. Adjust or adjust with a segmented valve. At present, the butterfly valve has low pressure and large volume. Increased use of medium pipe.

Pneumatic butterfly valve installation and debugging method and matters needing attention:

First close the valve with external force. That is, turn the shaft clockwise until the disc is in contact with the seat seal. At the same time, keep the cylinder closed (i.e. the small grooves on the cylinder shaft are perpendicular to the cylinder block; Close valve if turning clockwise) and connect cylinder to valve (parallel to mounting direction) or screw hole (perpendicular to body). It's not a big deviation. If it is not aligned, rotate the block slightly before tightening the screws.

When debugging the pneumatic butterfly valve, first check the valve accessories, solenoid valve, silencer, etc. If incomplete, do not debug. The normal air supply pressure is 0.6mpa ± 0.05mpa. Make sure there are no crumbs. Install ON the valve plate in the valve body before operation, manually operate the solenoid valve manual button (the solenoid valve coil is closed when manual operation, manual operation is effective. The control operation and manual setting are 0 bit, the electric control operation is effective, 0 bit is the valve closing, 1 bit is the valve opening, that is, the valve is open when energized. Close the valve when the power is off, open the valve when the power is off, can rotate 180 degrees to install the solenoid valve coil), check the running state of the valve.

During the debugging process, it was found that the valve opened slowly, but it moved quickly. In this case, the valve is closed too tightly. It is the cylinder stroke that needs to be reduced (the stroke adjustment screws at both ends of the cylinder must be adjusted inward simultaneously. To adjust, move valve to open position, close air source, and adjust. Yes), the regulator is convenient to open and close, no air leakage.

The muffler is an adjustable muffler, which can adjust the switching speed of the valve. The muffler shall be adjusted to the valve opening and closing speed. If the adjustment is too small, the valve may not work.