Normally-closed electromagnetic valve with controllable moving iron stroke and precise control method for moving iron stroke of normally-closed electromagnetic valve
A solenoid valve, normally closed technology, applied in the field of solenoid valves, can solve the problems of divergent current-mechanical characteristics of solenoid valves, large range of moving iron strokes, difficult processing and detection, etc. Easy to detect effects
Pending Publication Date: 2022-02-15
江苏奕隆机电科技有限公司
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Problems solved by technology
[0002] The traditional normally closed solenoid valve has a deep step hole in the valve body, which is not easy to process and detect
Moreover, the stroke between the moving iron and the valve body of the traditional normally closed solenoid valve depends on the machining accuracy of the parts, the stroke of the moving iron has a large variation range, and the electrodynamic characteristics of the solenoid valve are divergent and unstable.
Method used
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Embodiment Construction
[0014] As shown in the figure, a normally closed solenoid valve is composed of a magnetic isolation tube 1, a valve body, a moving iron assembly, a valve seat 4, a return spring 5, and a support seat 6. The support seat 6 There are several outlets on the circumference of the side wall, and the bottom end of the support seat 6 is provided with an inlet, and the solenoid valve is opened or closed by the moving iron assembly and the valve seat 4; the moving iron assembly is composed of the moving iron 3-1 It is connected with the steel ball 3-2; the valve body is provided with a magnetic isolation gap 23; the valve body is divided into upper and lower parts, wherein the upper part is the upper valve body 21, and the lower part is the lower valve body 22 , there is a gap between the upper valve body 2-1 and the lower valve body 22, which is connected by a magnetic isolation tube 1, and the gap is the magnetic isolation gap 23; the magnetic isolation tube 1 is set on the upper valve...
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The invention relates to a normally-closed electromagnetic valve with a controllable moving iron stroke and a precise control method of the moving iron stroke of the normally-closed electromagnetic valve. The electromagnetic valve is formed by assembling a magnetism isolating pipe, a valve body, a moving iron assembly, a valve seat, a reset spring and a supporting seat, wherein the moving iron assembly and the valve seat are matched to open or close the electromagnetic valve; the moving iron assembly is formed by connecting moving iron and a steel ball; the valve body is divided into an upper portion and a lower portion, the upper portion is an upper valve body, the lower portion is a lower valve body, and the upper valve body is connected with the lower valve body through a plunger tube. The traditional valve body is designed in a split mode, so that the depth of a hole is reduced, and machining and detection are more convenient. By the adoption of the design and the precise control method of the moving iron stroke, the moving iron stroke can be precisely controlled within a small tolerance range in the assembling process of the electromagnetic valve, and the current force characteristics of the electromagnetic valve are converged and stable.
Description
technical field [0001] The invention relates to a solenoid valve, in particular to a normally closed solenoid valve with a controllable stroke of a moving iron and a method for finely controlling the stroke of the moving iron. Background technique [0002] The traditional normally closed solenoid valve has a deep step hole in the valve body, which is difficult to process and detect. Moreover, the stroke between the moving iron and the valve body of the traditional normally closed solenoid valve depends on the machining accuracy of the parts, the stroke of the moving iron has a large variation range, and the electrodynamic characteristics of the solenoid valve are divergent and unstable. Contents of the invention [0003] In order to solve the above problems, the present invention proposes a normally closed solenoid valve with a controllable stroke of the moving iron and a fine control method for the stroke of the moving iron. [0004] Technical scheme of the present inven...
Claims
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IPC IPC(8): F16K31/06F16K1/14
CPCF16K31/0655F16K1/14
Inventor 刘伟江河薛奕佳张致兴吴志强
Owner 江苏奕隆机电科技有限公司