Flameproof electric ball valve
One, overview
DFB-20/10.0 mine flameproof electric ball valve can be matched with various types of automatic spray dust control device, widely used in coal mine underground belt conveyor transfer points, bunker coal and roadway needs of various places of automatic spray dust, the flameproof electric ball valve is a normally closed structure type, joint form G3/4 ′, body and water contact parts are made of high quality stainless steel, which can meet the coal mine of various types of water use; selection of high quality DC motor drive with high ratio of gear box, with large torque, large diameter, small resistance loss, the characteristics of long lifetime, no blockage. DFB-20/10.0 mine flameproof electric ball valve application in environmental temperature 5 ℃ ~40 ℃, the average relative humidity of environment ≤ 95%, explosive mixture but without destruction of gas coal mine application.
Two, model names and types
1 model description
2 explosion-proof type and explosion-proof mark
Explosion proof type: Flameproof
Explosion-proof symbol: Exd 1
Three, the work principle and structure feature
DFB-20/10.0 mine flameproof electric ball valve comprises a valve body, reducer, brushless motor, power supply circuit, control circuit.
Four, the main technical indexes
1 working voltage: 127VAC, 50Hz
2 operation voltage fluctuation range: the nominal value of 80%~120%
3 power: ≤ 15W
4 Opening time: ≤ 15s
5 closing time: ≤ 15s
6 adaptive pressure: (0.2~10.0) MPa
7 through water: ≥ 25L/min
8 working mode: continuous
9 interface parameters: G3/4 '
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