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Hangzhou Fuyang Hent Electromechanical Engineering Co., Ltd.
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Product Features |
| Special features: |
safe, green, economical, effecient, fast |
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| Description: |
The DQF series electric ball valve (Which have passed by the testing of Hangzhou quality inspect center in 1997)
HENT brand DQF series electric ball valve have overcome the shortcoming of traditional electromagnetic valve which usually have been damaged in diaphragm and mechanical accessory, and it has been proved that our valve has highest reliability in high frequency working condition.
DQF series electric ball valve has many specifications of nominal diameter from 15 to 150 mm standard caliber. Control voltage: 220 v, nominal pressure: 0.25 MPa, Switching speed: 0.5Time/sec. And continuous action life is over one million, its life is ten times than the traditional electromagnetic valve.
DQF series electric ball valve has special nominal pressure type, its continuous action life reach one million too.
Structure of valve body
HENT DQF series electric ball valve is made up of in-phase electromotor, limit switch which is imported from OMRON company in Japan, stainless steel ball and mechanical drive device formed by gears, cast iron valve body. The flange and screw thread is manufactured in GB. And it's compatible with traditional electromagnetic valve; So it is convenience for replacing. The indicator plate above enclose can indicate actual valve position, the combination of electric indicator cock and control indicated lamp can reflecting valve position of working site actually. It has a precision manufacture techniques and good looking appearance.
Working principle
When the HENT DQF series electric ball valve do not get the outer open signal, it is keeping electric lock in full cut-off position under the effect of operating power. And the indicator plate in full cut-off indicator position, there is no output signal (relay signal) at electric indicator cock.
When it has been received signal, the inner relay act, and main electromotor rotating, the little gear in transmission shaft rotating synchronously, drive the big gear and basic shaft and stainless steel ball rotating synchronously, after 2 second, the valve is in full open position. The electro-motor stopped and keeping electric lock under the action of the limited switch. At the same time the signal indicator be touched off and acting, the signal output and let the indicated lamp has a corresponding indicate in the control room, and then the indicate plate is in full open indicate position.
On the opposite, when the signal disappear, the electromotor rotating to the opposite direction. And the electromotor will stop and keeping electric lock after 2 second under the action of reverse limited switch.
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