External magnetic field prevention device of flow electromagnetic valve
An external magnetic field and solenoid valve technology, applied in the direction of valve device, valve operation/release device, valve details, etc., can solve problems such as loss of investors' interests, water theft, abnormal opening of valves, etc.
Inactive Publication Date: 2015-05-06
HANGZHOU XIANGJUN ELECTRONICS
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Problems solved by technology
The common flow solenoid valve has no anti-external magnetic field device or the effect of the anti-magnetic device is not ideal. When an excessively strong external interference magnetic field source is close to the flow solenoid valve, the flow solenoid valve will be opened due to the action of the magnetic field, causing the valve to open abnormally or steal water. Phenomenon, causing losses to the interests of investors
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Embodiment Construction
[0007] The present invention and its effects will be further described below in conjunction with the embodiments and accompanying drawings.
[0008] A flow solenoid valve anti-external magnetic field device reference figure 1 , which comprises an upper casing (1), a U-shaped antimagnetic block (2), an electromagnetic coil shield (3), a flow electromagnetic valve electromagnetic coil (4), and a lower casing (5). An upper casing (1) of an anti-external magnetic field device for a flow solenoid valve is formed by plastic processing. The inner wall of the upper casing is designed with a positioning groove for a U-shaped antimagnetic block to prevent the displacement and detachment of the U-shaped antimagnetic block (2). The U-shaped antimagnetic block (2) parts are made of soft iron, A3 steel and soft magnetic alloy with relatively high magnetic permeability. The thickness of the antimagnetic block is not less than 12mm, and the processing length of the iron yoke cannot be less th...
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The invention discloses an external magnetic field prevention device of a flow electromagnetic valve, and belongs to the field of automatic fluid control. The external magnetic field prevention device is particularly suitable for an electromagnetic control valve adopted for an IC card prepayment automatic fluid controller. The external magnetic field prevention device comprises an upper shell, a magnetism prevention block, an electromagnetic coil protection cover, the flow sensor electromagnetic valve and a lower shell. The U-type magnetism prevention block is designed on the electromagnetic valve coil protection cover of a flow sensor, in this way, the working state of the electromagnetic valve can not be disturbed and affected by external magnetism, and it is effectively ensured that profits of an investor are not damaged. The external magnetic field prevention device has the advantages of being resistant to external magnetic field interference of any strength, simple in structure, long in service life and capable of being widely applied to fluid IC card prepayment control systems.
Description
1. Technical field: [0001] The invention relates to the field of fluid automatic control, and is especially applicable to a flow solenoid valve anti-external magnetic field device in an IC card prepaid fluid automatic control system 2. Background technology [0002] At present, the valves commonly used in hot water control systems in the field of fluid automatic control are divided into solenoid valves and electric valves. The working mechanism of the flow solenoid valve is to open the valve after the current is converted into a magnetic field. The common flow solenoid valve has no anti-external magnetic field device or the effect of the anti-magnetic device is not ideal. When an excessively strong external interference magnetic field source is close to the flow solenoid valve, the flow solenoid valve will be opened due to the action of the magnetic field, causing the valve to open abnormally or steal water. Phenomenon, so that the interests of investors suffered losses. ...
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IPC IPC(8): F16K31/06
CPCF16K31/0675
Inventor 向前凌忠生胡江雄刘庆吴湘保
Owner HANGZHOU XIANGJUN ELECTRONICS