Working principle of track ball valve

Release time:

2024-04-26

The working principle of the track ball valve is as follows: 1) Opening process 1. In the closed position, the ball by the valve stem of the mechanical pressure, pressed on the seat.

The working principle of the track ball valve is as follows:

1) Opening process

1. In the closed position, the ball by the valve stem of the mechanical pressure, pressed on the seat.

2. When turning the handwheel counterclockwise, the valve stem is reverse movement, the bottom of the angular plane so that the ball off the seat.

3. The valve stem continues to lift and interacts with the guide pin in the spiral groove of the valve stem, so that the ball starts to rotate without friction.

4. Until the fully open position, the valve stem is raised to the limit position, and the ball is rotated to the fully open position.

2) Shutdown process

1. When closing, turn the handwheel clockwise, the valve stem begins to descend and the ball leaves the valve seat and starts to rotate.

2. Continue to rotate the hand wheel, the valve stem is embedded in the spiral groove in the role of the guide pin, so that the valve stem and the ball at the same time to rotate 90 °.

3. When it is about to close, the ball has rotated 90 ° without contact with the valve seat.

4. The last few turns of the hand wheel, the angular plane at the bottom of the valve stem mechanically wedge to press the ball, so that it is tightly pressed on the valve seat to achieve the sealing effect.