A ball height adjustment structure for a track ball valve

Abstract

This application relates to a ball height adjustment structure for a ball valve, comprising a valve body, a ball installed within the valve body, a bushing rotatably mounting the ball, a friction-reducing pad, a support member, and a connecting rod. The bushing is inserted and fixed to the inner wall of the valve body. A connecting shaft is fixed to one end of the ball near the bushing, and the connecting shaft is rotatably inserted into the bushing. The friction-reducing pad is slidably inserted into the bushing, and abuts against the end of the connecting shaft. An abutment hole is provided on the valve body corresponding to the bushing, communicating with the bushing. The support member is inserted into the bushing through the abutment hole and abuts against the friction-reducing pad. The end of the connecting rod abuts against the end of the support member. The abutment rod has threads on its circumference, and a corresponding threaded hole is provided on the valve body. The abutment rod is screwed into the threaded hole. This application allows for inward or outward screwing of the abutment rod, which, in cooperation with the support pad, indirectly adjusts the position of the friction-reducing pad within the bushing to adjust the ball height, ensuring that the ball profile matches the valve seat. The ball height can be adjusted from outside the ball valve without disassembling the ball valve.

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