Micro-control frictionless valve

Abstract

The invention relates to a valve, in particular to a micro-control frictionless valve. The invention provides the following technical scheme: the micro-control frictionless valve comprises a valve body and a valve cap; a valve passage and a sliding plug component are arranged inside the valve body; the valve passage comprises a medium inlet passage, a medium outlet passage and a connecting cavityfor commutating the medium inlet passage with the medium outlet passage; a sealing base is arranged between the connecting cavity and the medium inlet passage or the medium outlet passage; a communicating passage and a pressure relief cavity which is communicated with the connecting cavity are arranged on the valve body; the sliding plug component comprises a sliding plug; a sealing gasket is arranged on the end face of the sliding plug towards the sealing base; pilot holes which are communicated with the medium inlet passage are uniformly distributed on the sliding plug; a medium sealing body is arranged between an outer wall of the sliding plug and an inner wall of the connecting cavity; and the fluid sealing body is a gap between the outer wall of the sliding plug and the inner wall ofthe connecting cavity. Due to the adoption of the technical scheme, a micro-control frictionless valve in which the sliding plug is abrasion free during opening / closing is provided.

Description

technical field [0001] The invention relates to a valve, in particular to a micro-control frictionless valve. Background technique [0002] At present, the valves on the market and materials are mainly composed of a valve body and a valve cover. The valve body is provided with a valve channel and a valve core. The valve channel includes a medium inlet channel, a medium outflow channel, and a connecting cavity connecting the medium inlet channel and the medium outflow channel. , the spool drives the valve stem through the handle to control it, so that the spool opens or closes the connecting cavity, thereby forming the conduction or closing of the medium inlet channel and the medium outflow channel. [0003] The spool in the above-mentioned valve is driven by the valve stem, and there will be great friction with the side wall of the connecting chamber, which will cause the spool to wear for a long time and cause leakage of the valve body, and it is troublesome and costly to r...

AI Technical Summary

Problems solved by technology

[0003] The spool in the above-mentioned valve is driven by the valve stem, and there will be great friction with the side wall of the connecting chamber, which will cause the spool to wear and cause leakage of the valve body for a long time, and it is troublesome and costly to replace the spool. High; if the caliber of the valve body is large, the opening or flow adjustment needs to be controlled by a large torque actuator, which increases the production cost and reduces the production efficiency

Images