Electromagnetic valve with back suction structure
A solenoid valve and electromagnetic drive technology, applied in the field of solenoid valves, can solve problems affecting customer analysis accuracy, achieve the effect of overcoming pump action volume and improving analysis accuracy
Inactive Publication Date: 2012-07-11
TAKASAGO ELECTRIC SUZHOU
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- Claims
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Problems solved by technology
[0005] This phenomenon of pump action volume has gradually been unable to meet the increasing requirements of customers for high-precision valves, because it will affect the analysis accuracy of customers.
Method used
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Embodiment Construction
[0017] see figure 2 The solenoid valve 100 of the suck-back structure of the present invention includes a lower fixing part 1 , a valve body 2 fixedly mounted on the fixing part 1 , an electromagnetic drive part 3 and an isolation diaphragm system 4 fixedly connected to the valve body 2 .
[0018] The isolation diaphragm system 4 includes a first isolation diaphragm 41 and a second isolation diaphragm 42 arranged at intervals and a stem 43 between the pair of isolation diaphragms 41 and 42 . The stem 43 passes through the valve body 2 and connects the first isolation diaphragm 41 and the second isolation diaphragm 42 .
[0019] The valve body 2 has a fluid inlet 21 and a fluid outlet 22 . The end of the inlet line 23 of the fluid inlet 21 and the end of the outlet line 24 of the fluid outlet 22 correspond to the first isolation diaphragm 41 respectively, and the opening and closing of the fluid inlet 21 and the fluid outlet 22 are realized by the deformation of the first iso...
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The invention discloses an electromagnetic valve with a back suction structure, which comprises a fixed part, a valve body and an electromagnetic driving part successively connected, wherein the valve body is provided with a fluid inlet and a fluid outlet; the electromagnetic driving part is provided with a coil framework with a through channel, a coil winding around the coil framework, a fixed iron core partially accommodated in the through channel of the coil framework, a movable iron core moving in relative to the fixed iron core, a spring located between the fixed iron core and the movable iron core and an isolating diaphragm system; the isolating diaphragm system comprises a first isolating diaphragm located between the electromagnetic driving part and the valve body and corresponding to the fluid inlet and the fluid outlet and a second isolating diaphragm located between the valve body and the fixed part, the first isolating diaphragm forms a first cavity, and the second isolating diaphragm forms a second cavity communicated with the first cavity. By arranging the double isolating diaphragms, the acting volume of a pump is effectively overcome, and the precision of the electromagnetic valve is increased.
Description
technical field [0001] The invention relates to a solenoid valve, in particular to a solenoid valve without pump action volume. Background technique [0002] Solenoid valves use energized coils to generate electromagnetic force to drive the movement of the isolation diaphragm to open or close the valve and change the flow direction of the fluid, so as to achieve the purpose of the actuator to change the direction of fluid movement. It has many types and wide uses, and is the most important type of control valve. Among them, the isolation diaphragm type two-way reversing solenoid valve is widely used in the field of medical and environmental analysis and detection, as well as in the field of life science. It consists of a valve body with a fluid inlet and outlet, a fixed piece, a cylindrical shell-type coil drive part with a built-in energized coil, and a circular isolation diaphragm made of rubber material and a connecting piece. The fixing part, the valve body and the co...
Claims
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Inventor 河村敦
Owner TAKASAGO ELECTRIC SUZHOU