Machining process for valve seat of ball valve

Abstract

The invention relates to the technical field of ball valve machining processes, in particular to a ball valve seat machining process which can drive a valve element to rotate continuously and rub with two valve seats, so that the valve element is completely attached to the two valve seats corresponding to the valve element, the sealing performance of a ball valve after assembly is guaranteed, and the service life of the ball valve is prolonged. When the double-shaft motor rotates, the driving gear is driven to rotate at the same time, then the connecting shaft is driven to rotate through the driving shaft, the connecting shaft continues to drive the reciprocating lead screw to move, and therefore the two sets of valve seats are driven to swing in a reciprocating mode, and meanwhile the abrasive filling pipe can be driven to do reciprocating motion; the grinding machine can be evenly attached to the surface of the valve element, workers do not need to add grinding agents manually, production accidents caused when the grinding agents are smeared manually can be avoided, attachment of the grinding agents can be more even, and the machining precision is further improved.

Description

technical field [0001] The invention relates to the technical field of ball valve processing technology, in particular to a processing technology of a ball valve seat. Background technique [0002] The ball valve is a valve that is driven by the valve stem and rotates around the axis of the ball valve. It is also often used for fluid regulation and control. Among them, the V-shaped ball core of the hard-sealed V-shaped ball valve and the metal valve seat of hard alloy surfacing. There is a strong shear force between the two groups, especially suitable for media containing fibers, tiny solid particles, etc. The ball valve usually controls the opening and closing of the valve through the cooperation of the valve core and the two sets of valve seats, so the valve core and the valve Whether the processing technology of the seat is good or not determines the sealing performance and service life of the ball valve; [0003] The existing ball valve seat processing technology still ...

AI Technical Summary

Problems solved by technology

[0004] (1) The existing valve seat processing technology usually forges the billet by forging. However, there are tolerances in the contact surface between the valve core and the valve seat after forging, and it is difficult for the valve core to fit the valve seat completely, which affects the ball valve. Sealing performance and service life;

[0005] (2) The existing valve seat processing technology usually uses a grinder to grind the edge of the valve seat, and it is necessary to manually add abrasives to the surface of the valve seat. Since the valve seat is still rotating rapidly when the abrasive is added, this processing There are safety hazards in the process

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