Is the failure of pneumatic polyurethane butterfly valve electric? Installation and maintenance of electro pneumatic butterfly valve
(1) Before the installation and use of the electric pneumatic butterfly valve, the pneumatic butterfly valve must be inspected before installation and tested for opening and closing operation. It can be installed and used only when the operation is normal.
(2) The installation and maintenance of the electro pneumatic butterfly valve shall make the valve concentric with the pipeline flange as far as possible, and shall be supported and fixed. The pneumatic butterfly valve shall not be subject to other external forces to avoid damage to the middle seal of the valve and deformation of the valve. The valve can not be used due to inflexible opening and closing and damage of the valve.
(3) It is necessary to ensure that the power air supply provided by the electro pneumatic butterfly valve and electric components must be clean and free from oil and water as far as possible. The cleanliness shall be less than 0.4 microns.
(4) Before connecting to the air source, the air supply pipeline, air source interface, switch and other devices must be cleaned to prevent the failure caused by the dirt and sediment washed into the electric actuator unit due to the uncleanness of the pipeline.
(5) The connection of electric actuators, solenoid valves, positioners, filters, pressure reducing valves, etc. can be made of copper pipes or nylon pipes. To prevent dust and reduce noise, the exhaust port should be installed with silencers or silencing throttle valves.
(6) After installation, the electric valve shall be tested, and the electric actuator shall be pressurized to the rated value with the pressure of 0.4~0.7 mpa. The electric pneumatic butterfly valve shall be tested for opening and closing, and the opening and closing of the valve shall be observed. It shall rotate flexibly without jamming. If the switch is jammed, the air pressure can be increased. Repeatedly open and close the valve to make it flexible.
(7) When installing and debugging the on-off electric pneumatic butterfly valve, first use the manual device (the manual button on the solenoid valve) for debugging, and then conduct the power on debugging after the action is normal.
(8) The electro pneumatic butterfly valve shall be regularly maintained at the rotating position of the valve stem, and the oil (engine oil) shall be added once every three months. Regularly drain and blow down the electric actuating unit and the air filter used together. Under normal circumstances, it shall be inspected once every six months and overhauled once a year.
、 The internal structure of the pneumatic butterfly valve has also changed greatly in the traditional design. Unlike other types of butterfly valves, the ball of the cock is only used in the internal part of this equipment. For the later operation, the methods used in the process of fault detection and troubleshooting are different, and the design of the inlet and outlet will also be very different, Therefore, this type of valve is designed and used later, which will also bring about corresponding quality operation and safety assurance.
Previous: How about the quality of special fan for paper mill with pneumatic explosion-proof ventilation butterfly valve?
Next: What is the price of remote letter Dg500 of pneumatic ventilation regulating butterfly valve?
