Fixed ball valve structure regulating device

Abstract

The invention relates to a fixed ball valve structure regulating device. A fixed ball valve comprises a valve body, a ball, a valve stem and a supporting shaft, wherein the ball is arranged in the valve body, the valve stem penetrates through the upper portion of the valve body to be connected with the ball, and the supporting shaft penetrates through the lower portion of the valve body to be connected with the ball. The structure regulating device comprises a bottom cap, a seal cap, a regulating nut and a regulating bolt, wherein the bottom cap is arranged below the supporting shaft and connected with the valve body, the lower end of the regulating bolt is connected with the regulating nut, the upper end of the regulating bolt penetrates through the bottom cap and butted upon the lower end of the supporting shaft, and the seal cap is fixed on the bottom cap through screws. Compared with the prior art, the fixed ball valve structure regulating device has the advantages of rapidness and convenience in maintenance, capability of achieving sealing effect by allowing the ball to match with a valve seat quickly without shutdown, and the like.

Description

technical field [0001] The invention relates to a component of a fixed ball valve, in particular to an adjustment structure device of a fixed ball valve. Background technique [0002] We know that fixed ball valves are widely used in various fields such as petroleum, chemical steel, metallurgy and electric power. The valve stem is fixed, and the weight of the entire ball is completely borne by the lower valve stem. The larger the diameter of the fixed ball, the greater the weight of the ball, and the higher the requirements for the lower valve stem. If the structure of the lower valve stem is unreasonable, it cannot support and fix the ball well, and the valve ball deviates from the correct position, that is, it cannot fit tightly with the valve seat, then the sealing effect will be lost and the medium will leak. Therefore, the structure of the lower valve stem is an important part of the fixed ball valve structure, which will directly affect the sealing effect of the ball ...

AI Technical Summary

Problems solved by technology

And its contact surface is a plane, that is, the rotating part is a large plane, so that the opening and closing torque is large, and if the fixed ball has a high or low position, it is necessary to remove the bottom end cover 37 of the valve stem, and then install or replace the adjustment pad. The piece 36 is used to adjust the correct position of the fixed ball, which also takes time, especially when the pipeline is worn out during long-term operation, it cannot be adjusted

However, due to the needs of the enterprise and the process, most of the valves on the pipeline cannot be stopped immediately, and any on-site timely maintenance measures cannot be carried out, which brings great hidden dangers to the safe operation of the pipeline.

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