High stability control valve with valve stem protection structure and working method

Abstract

The invention discloses a high-stability regulating valve with a valve rod protection structure, which includes a first chuck, a second chuck, a docking valve body and a rotating valve rod, and the rotating valve rod is movably installed in the middle of the inner side of the docking valve body position, the outer surface of both sides of the rotating valve stem is fixedly installed with a splicing valve plate, the inner inner surface of the rotating valve stem is movably socketed with an inner sleeve rod, and the side outer surface of the splicing valve plate is fixedly installed There is a combined clamping plate, and the inner surface of both sides of the rotating valve stem is provided with a splicing clamping groove, and the rotating valve stem and the splicing valve plate are fixed by butt jointing the splicing clamping groove and the combined clamping plate; the present invention has valve stem protection The structure of the high-stability control valve makes the control valve have a stem protection structure, which improves its stability during use and prevents the valve stem from loosening. At the same time, it has a splicing combined fixed structure, which makes its installation and disassembly operations more convenient.

Description

technical field [0001] The technical field of the regulating valve of the present invention is, in particular, a highly stable regulating valve with a valve stem protection structure. Background technique [0002] Valves are the control components in the fluid delivery system. They have the functions of cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or overflow pressure relief. Valves used in fluid control systems range from the simplest cut-off valve to extremely complex There are various types and specifications of valves used in the automatic control system. [0003] Patent document CN104976418B discloses a throttling part of a flow regulating valve, which includes a cylindrical throttling body. The outer wall of the throttling body is provided with a spiral groove for reducing the fluid velocity. One end surface of the throttling body is A fluid inlet is provided for fluid to enter the spiral groove, and a fluid outl...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the fact that the traditional high-stability control valve does not have an auxiliary locking structure, the traditional control valve is manually driven and operated, which makes the control valve prone to loosening under the influence of external forces, thereby reducing the safety of the control valve when it is used, and it cannot be repaired. Double locking operation; Secondly, the traditional high-stability control valve adopts an integrated structure design. When the sealing of the high-stability control valve has problems, the user needs to disassemble and maintain the entire control valve, thereby increasing the disassembly and maintenance of the control valve. Difficulty in operation, secondly, the traditional high-stability control valve does not have a stem protection structure, which reduces the stability of the control valve during use, and provides a high-stability control valve with a stem protection structure

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