Product
Overview of General Explosion-proof Valve Electric Actuator
The explosion-proof grade of ZB20 flameproof valve electric device is ExdII BT4 and IP67. The performance of flameproof valve meets GB3836.1-2000 "Electrical equipment for explosive gas environment Part 1: General requirements", GB3836.2-2000 "Electrical equipment for explosive gas environment Part 2: Flameproof"d"and JB/T8529-1997"Flameproof valve". Technical Specifications for Electric Door Devices.
II. Structure of General Explosion-proof Valve Electric Actuator
ZB20 flameproof valve electric device consists of motor, deceleration mechanism, moment control mechanism, stroke control mechanism, opening indicator mechanism, hand-electric switching mechanism, handwheel and electrical parts. Its transmission principle is shown in the figure.
Note: Flameproof surface structure is added to the flameproof electrical part, and flameproof junction box and YDF flameproof valve motor are used. When installing, debugging and maintaining, the flameproof surface should not be damaged; the electrical cover should not be removed under explosive environment for live operation; the power supply must be cut off before opening the cover; the cover should be tightly fastened to ensure flameproof performance when reinstalling.
3. Parameters of General Explosion-proof Valve Electric Actuator
Model: DZW-20B
Output Torque: 200N. M
Output speed: 18r/min
Motor power: 0.55KW
Motor current: 2.2A
Protection Level: IP67
Maximum number of turns: 60
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