Closed type electromagnetic valve during electrifying
A technology of solenoid valves and solenoid coils, applied in the field of solenoid valves, can solve problems such as gaps and inability to save electricity, and achieve the effects of strong adsorption, reliable maintenance, and reliable valve closing state
Active Publication Date: 2010-12-15
SAGINOMIYA SEISAKUSHO INC
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Problems solved by technology
However, if the valve core and the plunger are integrally structured like the existing solenoid valve, in order to make it in the closed state reliably, it must be made so that the plunger and the suction force are connected even when the valve is seated on the valve seat. structure in which gaps also occur between
Therefore, power saving for maintaining the valve closed state cannot be expected
Method used
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[0018] Hereinafter, embodiments of the energized-close type solenoid valve according to the present invention will be described with reference to the drawings. In addition, in the following description, the solenoid valve closed when energized is simply called a "solenoid valve". figure 1 It is a longitudinal sectional view of the solenoid valve 10 of the embodiment at the time of non-energization, figure 2 is a longitudinal sectional view of the first state of the solenoid valve 10 when it is energized, image 3 It is a vertical cross-sectional view of the solenoid valve 10 in the second state at the time of energization. The solenoid valve 10 of this embodiment has a valve case 1 of a non-magnetic material forming a valve chamber 11 , and a drive valve unit 2 attached to the valve case 1 . In the figure, the dotted line indicated by symbol L is the central axis of the valve casing 1 and the driving valve unit 2 , and the direction of the central axis L is the axial direct...
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The invention relates to a closed electromagnetic valve when being powered, which can reliably maintain a closed valve state at the same time of saving energy in the field even if a suction force of fluid on a valve seat is weak. A solenoid coil is powered to move a plunger piston towards an attractor, so that a valve rod part is released by thrust generated by a plunger piston spring, and moved towards a valve seat by using the thrust of a valve spring to form the closed valve state. Moreover, the plunger piston moves along a sliding shaft of the valve rod component and is adsorbed on the attractor. Power of the solenoid coil is cut off; a bearing part and a hook component of the plunger piston are abutted by using the thrust of the plunger piston spring, and the valve rod component and the plunger piston move towards a magnetic guiding component to form an open valve state. The plunger piston spring and the plunger piston are made into components moving the valve rod component towards the open valve direction at power off, while the plunger piston is adsorbed on the attractor to maintain the closed valve state at power on. After adsorption, even if the power for powering the solenoid coil is reduced, the closed electromagnetic valve still can maintain the closed state.
Description
technical field [0001] The present invention relates to an energized closed solenoid valve which is in a closed state by energizing an electromagnetic coil and in an open state by de-energizing. Background technique [0002] In recent years, as such a solenoid valve, there is, for example, a solenoid valve disclosed in Patent Document 1 (Japanese Patent No. 3155630). In the solenoid valve of this Patent Document 1, an outer case of a solenoid (electromagnetic coil) that is located on the outer periphery of the plunger tube and forms a magnetic circuit by energization, and a large diameter portion located therein in the central axis direction of the plunger tube are provided. A movable attractor at one place. [0003] And, by using the magnetic force from the movable attractor, the plunger of the magnetic body compresses the valve opening spring so that the plunger is attracted to the movable attractor, and the valve element is brought close to the valve seat. Thus, the val...
Claims
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IPC IPC(8): F16K31/06F16K1/32
Inventor 古牧久司山口宽河村志信
Owner SAGINOMIYA SEISAKUSHO INC