Electric /manual opening-closing display type mechanical retaining electromagnetic valve

Abstract

An electric / manual opening / closing display-type mechanical-retention electromagnetic valve comprises a valve body, a diaphragm-type valve core cover, a valve cover, a valve core rod, a valve core shell, a static iron core and an electromagnetic coil. An upper lock sleeve and a lower lock sleeve, which are sleeved around the valve core rod and engaged with each other by slant teeth, and a valve core rod mechanical retention mechanism, which is fixed on the inner wall of the valve core shell and consisting of outer lock sleeves, are arranged inside the valve body. A sealed isolation device is also arranged inside the valve body to isolate the valve core rod mechanical retention mechanism from the working media. The upper end of the valve core rod is connected with a manual handle. A valve shell is provided thereon with a dry reed tube and an indicator lamp, which are engaged with a short magnetic column inside the valve core rod. The invention has the advantages of smart and compact structure, small size, flexible and reliable operation, and less power consumption. Additionally, the electromagnetic valve can automatically display the opening / closing state, to facilitate the monitoring of work conditions. Furthermore, the valve core rod mechanical retention mechanism is independent from the working media, can work more stably and reliably with long service life. The device can be operated manually under the condition of power failure.

Description

technical field [0001] The invention relates to the technical field of solenoid valves. Background technique [0002] Existing solenoid valves are generally monostable self-control valves, which automatically open or close after power-on, but need continuous power supply to maintain their open or closed state, which is not suitable for lack of stable mains power supply or some Power consumption, long-term use of the working environment. For this reason, the applicant has developed the "electrical opening and closing mechanical maintenance solenoid valve", and applied for a patent, the patent number is 200510060581.9. The valve includes a valve body, a diaphragm disc, a bonnet, a spool rod, a spool case connected to the bonnet, a static iron core and an electromagnetic coil, wherein the spool rod is a T-cylindrical rod, and its lower rod There are an upper lock sleeve and a lower lock sleeve. The lower end of the upper lock sleeve and the upper end of the lower lock sleeve ...

AI Technical Summary

Problems solved by technology

But through practice, the valve still has some deficiencies, such as: the valve can not be displayed in the open or closed state; it cannot be operated manually when the mains supply is interrupted; the working parts of the upper and lower lock sleeves are not isolated from the working medium, Susceptible to corrosion or interference to affect operation

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