Fluid valve and its mandrel packaging structure

Abstract

A fluid valve, comprising a valve body, a mandrel and a valve, the valve body has a shaft sealing groove and a valve groove which can be connected, and the valve is arranged in the valve groove, a mandrel packaging structure is arranged in the shaft sealing groove, and the mandrel packaging structure The shaft seal ring, the mandrel ring and the spring are stacked in sequence, and the inner edges of the above-mentioned components are connected to form a housing space, and the mandrel can be accommodated in this housing space, so that the mandrel can be packaged as a whole It has the effect of average load.

Description

technical field [0001] The invention relates to a fluid valve, in particular to a fluid valve with a modular mandrel packaging structure. Background technique [0002] The fluid valve is a mechanical structure arranged on the flow channel to block or open the flow channel, which can achieve the effect of controlling the flow of the flow channel. Whether in industry or in the home, the fluid valve is a commonly used mechanical structure. Generally speaking, if Figure 1A As shown, the fluid valve installed in the flow passage includes a valve body 92, a mandrel 94 and a valve (not shown) on the flow passage are installed in the valve body 92, by moving, rotating or pulling the mandrel 94, you can The mandrel 94 is linked with the valve (not shown), so as to achieve the effect of blocking or opening the flow channel. [0003] In the industrial application of fluid valves, since the fluid may have the characteristics of high temperature, easy dissolution or corrosion of other ...

AI Technical Summary

Problems solved by technology

See Figure 1B , judging from the current common fluid valve mandrel packaging structure, the load distribution 8 borne by the shaft seal ring 96 from top to bottom is unbalanced, and the load borne by the upper half of the shaft seal ring 96 will be higher than that of the lower half. is large, this result will affect the degree of sealing of the mandrel packaging structure

The ideal load distribution is to make the upper and lower ends bear similar loads, and the loads gradually decrease as they approach the center, that is, the two ends of the shaft seal ring 96 bear similar forces under ideal conditions; currently there are some For the problem of unbalanced load on the valve body, disc springs or coil springs are added to the package structure to balance the load. However, due to the structure of the disc spring, there will be the disadvantage of uneven force applied to the inner and outer rings, which cannot really solve the problem of unbalanced load. The problem of balance, while the coil spring exerts an average force, but occupies too much space, so it still cannot solve the problem of unbalanced load and too much space at the same time

[0004] In addition, after the fluid valve has been used for a long time, the shaft seal ring 96 will still be worn due to wear or erosion by the fluid. When the shaft seal ring 96 is worn out, a gap may appear between the spindle 94 and the valve body 92 , so that the fluid seeps out from the gap

[0005] Among the components of the fluid valve, the shaft seal ring 96 is usually a component that wears out quickly. Therefore, when the wear occurs, the fluid valve can continue to operate normally as long as the shaft seal ring 96 in the shaft seal groove 922 is cleaned and replaced. , but by Figure 1A It can be seen that when the shaft seal groove 922 is a narrow space, it is not easy to clean and replace the shaft seal ring 96, and once the cleaning time is long, in addition to the increase in labor costs, it will also be caused by fluid valves. The inability to use joint and consequential production line stoppages and other additional losses

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