ZB series explosion-proof valve device for coal mine (referred to as ZB series mine valve) is improved on the basis of the original common explosion-proof valve device. It is suitable for valves with linear motion of valve disc, such as gate valve and globe valve. , Diaphragm valves, gates, sluice valves, traps, etc., can also be used for track ball valves and track butterfly valves for rotary motion of rotary parts; for example, butterfly valves, dampers and air duct valves can be used after adding secondary speed reducers. It is used to open, close or adjust the valve, which is an indispensable driving device for remote control and centralized control of the valve.

Design and manufacturing standards: Q/3204AY1001-2005: "Technical conditions for electric devices for explosion-proof valves for coal mines": GB3836.1-2000: "Electrical equipment for explosive gas atmospheres - Part 1: General requirements": GB3836.2-2000 : "Electrical Equipment for Explosive Gas Environments Part 2: Explosion-proof Type "d"": GB3836.3-2000: "Electrical Equipment for Explosive Gas Environments Part 3: Increased Safety Type "e"".

Model representation method: 1, output shaft ^ large number of turns: expressed by Arabic numerals; 2, rated output speed: expressed in Arabic numerals, r / min (rev / min); 3, fixed output torque: with Arabic numerals, units :kgf·m;4, product form: ZB means explosion-proof valve device for coal mine; 5, example: ZB120-24/400: indicates explosion-proof valve device for coal mine, output torque 1200N·m (120kgf·m ), the output speed is 24r/min, and the output shaft ^ has a large number of revolutions of 400 turns.