Flow control device
A technology of flow control device and flow channel, which is applied to valve devices, cocks including cut-off devices, multi-way valves, etc., which can solve the problems of reduced sealing performance and achieve the effect of improving internal sealing performance
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[0024] In other embodiments, the spool can be integrally formed with other materials such as ceramics, plexiglass, or metal, or a sealing contact structure of other materials such as ceramics, plexiglass, or metal is embedded on the outside of the spool 2, specifically the sealing contact portion of the spool 2 The main body part 20 protrudes outwards along the radial direction of the valve core, that is, the sealing contact part of the valve core 2 is fitted and assembled with the main body part 20 or the sealing contact part and the main body part 20 are integrally structured. The sealing contact part of 2 is a ceramic arc-shaped contact surface or a metal arc-shaped contact surface or a plexiglass arc-shaped contact surface. The surface roughness of the arc-shaped contact surface is greater than 0.03 μm and less than 0.48 μm, and the surface is relatively smooth to meet the sealing contact performance .
[0025] Driven by the transmission element, the spool 2 reciprocates a...
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