[Science stickers] Demonstration of ball valve working principle and structure principle

The opening and closing part of the ball valve is a sphere, which is driven by the valve stem and rotates 90° around the axis of the ball valve to open or close. It can also be used for fluid adjustment and control. It is mainly used for cutting, distributing and changing the flow direction of the medium in the pipeline. It has good sealing performance, convenient operation, rapid opening and closing, simple structure, small volume, low resistance, light weight, etc. Features.

1. Drive the ball to the left through the valve stem, rotate it 90 degrees, and open it all.
2. Drive the ball to the right through the valve stem, rotate it 90 degrees, and close it all.

Structure principle of ball valve

1. The ball valve is composed of a valve body, a valve stem, a sealing seat, and a ball.
2. The ball core of the ball valve is round, and the opening of the ball can be adjusted by analog signals to achieve precise adjustment.
3. Adopting rubber seal, reliable sealing.
4. High temperature resistance, the temperature resistance range of different materials of the valve is different, and the maximum temperature resistance can reach 150°.
5. The structure is simple, the seal can be disassembled freely, and the sealing material can be replaced, which is convenient to use.
6. Long service life, under normal working conditions, multi-frequency operation, no need to replace the seals, 100,000 operations can be performed continuously.
7. Since the ball valve has the wiping property during the opening and closing process, it can be used in the medium with suspended solid particles.
8. Full-diameter structure, small fluid resistance, large flow, and no loss of flow.
9. Fast opening and closing speed, only 90 degree rotation is required for opening and closing, and the fastest opening time is 1 second.

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