Valve drive inspection and test: 1. The use of gears, worm-driven valves, the transmission mechanism should be checked and cleaned according to the following requirements: Worm and worm gear should be well engaged, work light, no excessive wear and tear astringent fire phenomenon; open The gear meshing surface of the mechanism, bearings, etc. should be cleaned and filled with grease; valves with closed mechanism should be spot checked 10% and not less than one, the body parts should be complete, the internal clean and dirt-free, transmission parts without burrs , The Ministry of the gap and meshing meet the requirements, if there is a problem, the batch of valves should be checked by the transmission mechanism; open lid inspection, such as lubricant deterioration, the batch of the valve to be replaced. 2 with sprocket body valve, chain rack and sprocket center plane should be the same. According to the working position check the work of the chain, the chain movement should not smooth groove, the chain may not have open-loop, desoldering, corrosion or sprocket and the chain pitch and other defects. 3. Pneumatic, hydraulic transmission valve should be air or water as the media, according to the working pressure of the piston to open the test. When necessary, the valve should be sealed test. 4. In addition to the electric valve gearbox in accordance with the provisions of Article 1 of the provisions of cleaning and inspection, should check the coupling of coaxiality, and then connected to the temporary power supply, in the fully open or fully closed state, check , Adjust the valve limit device, repeated testing of not less than three times, the electric system should be reliable action, indicating accurate. 5. Solenoid valve should be connected to the temporary power supply, the opening and closing test, and shall not be less than three times. When necessary, the valve should be closed, the seal test. 6. Valves with mechanical interlocks shall be tested and adjusted on the mounts of the mounting location. Two valves should be opened and closed action coordination, work light, limit accurate.
