A hermetic polytetrafluoroethylene valve for controlling fluid flow

Abstract

The invention relates to an airtight Teflon valve for having control over the fluid flow. A valve casing is driven to move upwards through rotation of a rotary handle and transmission of a threaded rod, the bottom of the valve casing drives a valve plug to move, elasticity deformation of a telescopic connecting component occurs, the telescopic connecting component drives a tapered rod to move, and the contact area between the tapered rod and a fluid inlet is controlled through a tapered head on the lower portion of the tapered rod at the moment, so that the purpose of having control over the fluid flow is achieved; the telescopic connecting component, the tapered rod and a support inside the valve are integrated, and the telescopic connecting component is of a concave and convex surface structure. The airtight Teflon valve for having control over the fluid flow is made of Teflon materials, has the advantages of resisting the high temperature and high pressure, preventing corrosion, and being wide in application range, good in safety performance and particularly applicable to fluid transport in the process of chemical industry production; due to the fact that the whole airtight Teflon valve is easy to assemble, and can be replaced in a split mode, waste of valve materials is reduced; in addition, due to the fact that components are machined in a split mode, the number of machining procedures is reduced, and the components can be replaced at any time.

Description

technical field [0001] The invention relates to a hermetic polytetrafluoroethylene valve, which belongs to the field of chemical production fluid flow control, in particular to a hermetic polytetrafluoroethylene valve for controlling fluid flow. Background technique [0002] Most of the materials processed in the chemical production process are fluids, which usually include liquids and gases. For example, in the process of hydrometallurgy, the beneficiation process is carried out to enrich lean ore to obtain concentrate. The fluid in the beneficiation process is ore slurry, so the liquid usually contains a certain amount of solid particles. In hydrometallurgy, in order to obtain the metals in the ore, according to the different properties of the ore, acid, alkali or other solvents are usually used to dissolve the useful metals from the ore, so as to achieve the purpose of recovery. Therefore, the ore is first leached Fetching is very necessary. In the chemical production p...

AI Technical Summary

Problems solved by technology

The biggest problem in the use of plastic valves is that the valves will deform at higher temperatures

At the same time, in the application of plastic valves, due to long-term use, the long-term rotation of the adjusting shaft will cause wear to the sealing packing, causing leakage at the adjusting shaft, while stainless steel can withstand high temperature and high pressure when manufacturing valves, but it is not resistant to hydrochloric acid.

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