江苏兰 valve General Equipment Co., Ltd., a coal mine gas pumps and automation needed drainage valve is configured on a dedicated ZB series mining explosion-proof construction equipment flameproof electric valve Important: This series of electric devices require explosive gas mixture inside the product Explosion , the flameproof enclosure shall be damaged or explosive mixtures external electrical device explosion, for which:. a component parts such as flameproof enclosure box, cover, junction box cover, junction box seat, etc., subject to 1.0 after finishing MPa, which lasted no less than 10S hydrostatic test pass. b. internal length flameproof joint clearance, surface roughness and the junction box between the exposed conductor electric valve controller company, bare metal conductor clearances and creepage distances between product design should meet the requirements. c. bolted flameproof enclosures are equipped with spring washers to prevent loosening themselves. d. electrical equipment box, cover, travel bushings, torque bushings, junction box seat, junction box cover are made of gray cast iron HT250. e. box, cover, travel bushings, torque bushings, junction box seat, the junction box cover, splice tray, explosion connected sets, seals are proof components. f seals made of NBR XH-50, 江苏兰 valve General Equipment Co., Ltd. In order to facilitate the automation of coal mine drainage system of centralized control of the valve, the company on the basis of KXBC series on the development of a control KXBC Series I. a control valve actuators three flameproof control box. Control box in addition to ensuring proof exterior design performance, but also has to prevent misuse of the mechanical and electrical interlock function commissioning 2 3.4 Digital Display Calibration: After more than commissioning is complete, turn off electric devices in place, then the output current of 4mA electric valve controller models, digital press calibration button behind the "RESET" electric valve controller, press "0%" button to make the calibration memory, the display shows this case "L" flashes; the electric device to open in place, this When the output current of 20mA electric valve controller, digital press calibration button behind the "RESET", then "100%" button to make the calibration memory, display "H" flashes on the display at this time. 3.5 Remote Control: local / remote switch play to the remote end can be remotely controlled. Within 3.5.1 for DC24V, shown in Figure 6, the remote end only provide passive contact, as shown to the implementation of remote on and off control (Note: The remote access point is not to keep inching opening and closing valve control). 3.5.2 External supply DC24V, DC24V remote side to provide power supply 24V- public terminal connected to the terminal "DC24V- output" side, power supply 24V + are access "Remote Open", "Remote Close", "Remote Hold" to achieve opening and closing valve control (Note: The remote access point is not to keep inching opening and closing valve control). Electric valve controller schematics, electric valve controllers, 江苏兰 valve provided by 江苏兰 valve General Equipment Co.江苏兰 valve General Equipment Co., Ltd. (www.lanfa.cn) strong, credible, in Changzhou, Jiangsu regulating valve industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jiangsu Lan valve and you hand into the brilliant, for a better future!