Machining technology of high-precision constant pressure valve and production line thereof

Abstract

The invention discloses a machining technology of a high-precision constant pressure valve. The high-precision constant pressure valve has a set pressure value p. The machining technology comprises the following steps that firstly, pressure is applied to a pressure spring to enable the pressure on a unit area of the pressure spring to reach the pressure value, the length of the pressure spring after being compressed is measured, then a pressure spring hole is machined by a pressure spring hole depth processing device to enable the depth of the pressure spring hole to correspond to the length after being compressed, the pressure spring is placed in the pressure spring hole, and then the assembly of the high-precision constant pressure valve is completed by assembly equipment. The inventionfurther discloses a high-precision constant pressure valve production line. The machining technology and the high-precision constant pressure valve production line improve the constant pressure precision and yield of the constant pressure valve.

Description

technical field [0001] The invention relates to the technical field of constant pressure valve production and processing, in particular to a high-precision constant-pressure valve processing technology, and also relates to a high-precision constant-pressure valve production line. Background technique [0002] The working principle of the constant pressure valve is: figure 1 As shown, the constant pressure valve includes an upper valve body 141, a lower valve body 142, a separating device 143 and an elastic device. In an independent space, the elastic device includes a stage clip 8 and a stage clip hole 144 located on the lower valve body 142. During assembly, the stage clip 8 is pre-compressed so that it has a reaction force to the partition device 143. When in use, when the upper valve body 141 When the pressure inside becomes larger so that the pressure on the separating device 143 is greater than the set value of the elastic device, the separating device 143 further comp...

AI Technical Summary

Problems solved by technology

In the prior art, the processing technology of the constant pressure valve is: the length of the compression spring is set within the tolerance range, and the tolerance range of the depth of the compression spring hole is reduced as much as possible, but the actual effect obtained is the pressure at which the constant pressure valve is opened The value fluctuates in a large range and cannot reach the marked constant pressure constant value. The reason is that F=Kx, the K value is a value comprehensively reflected by factors such as the material of the compression spring and the effect of heat treatment. The K value of each compression spring is different. Moreover, the x value refers to the length change value of the compression spring after being compressed, so only controlling the length tolerance of the compression spring in the free state and the depth tolerance range of the compression spring hole cannot obtain a high-precision constant pressure valve, and also improves Scrap rate, lower yield

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