Chemical pipeline pump valve jam and stuck a solution

Use a lot of chemical pipeline, pipeline water pump, is not only a pressurization transmission effect, regulating valve in the pipeline to blocked or jammed that is very troublesome, not only affect the production, the water pump may cause damage, so what are the methods to solve these problems? A, install pipeline filter method for small diameter of the regulator, especially ultra-small flow regulating valve, the throttling clearance, small, medium can't have a little residue. Encounter this jam, installation of a strainer before valve line, to ensure that the media to go through. Take use of regulating valve locator, locator is not normal work, the pneumatic throttle mouth jam is a common fault. With locator at work, therefore, must deal with gas source, usually adopts the way is in front of the locator air pipe installed on the air filtering pressure reducing valve. Second, external flushing method for some easy to precipitate, medium containing solid particles using ordinary valve adjustment, often at the throttle mouth, guide block, but the cover bottom plug in an external erosion gas and steam. When the valve is blocked or jammed, open an external gas or steam valve, can be completed in under the condition of fixed regulator flush work, make the normal operation of valve. Cleaning method of common fault: pipeline welding slag, rust, pulp are under the throttle mouth, guiding parts, valve cover balance hole blockage or stuck valve core surface, guide surface strain and scratches, seal surface indentation, etc. This often happens in the early new operation system and put into operation after overhaul. Encounter this situation, it is necessary to remove for cleaning, remove the slag content, such as the sealing surface damage should also grinding; At the same time open the bottom plug to flush out from under the balance hole fall into the residue inside the valve cover, and the pipeline to wash. Before put into operation, let the valve fully open, the medium flows into normal operation again after a period of time. Third, through to the Angle through to pour S flow, flow complex, upper and lower chamber should dead zone, provides the medium of precipitation. Angle connection, flows through 90 ℃ medium like elbow, washing performance is good, dead zone is small, easy, designed to streamline. Therefore, using the pass-through regulator slight jams can be used to Angle valve. Four solid particles, increase the throttle gap method such as the medium or washed off in pipe welding slag and rust due to pass the throttle mouth such as congestion, jam, such as fault, can convert the throttle gap big throttling parts & ndash; Throttling area of a window, open the valve core and the sleeve, rather than the circumference of a circle because of the throttling area of concentration distribution, fault can easily be ruled out. If you are single, two-seat valves can change the plunger type valve core to & other; V” Shape of the mouth valve core, or into a sleeve valve, etc. Such as a chemical plant has a two-seat valves often gets stuck, recommend to switch to the sleeve valve, problem be solved immediately. 5, medium washed law USES the scouring of medium energy, wash and take things easy to precipitate, easy to jam, thus improve the function of valve stem. Common methods include: flow closed form into use; Use streamlined body; Puts the throttling mouth wash badly, adopted should pay attention to improve the throttling parts material erosion resistant ability.
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