A common cause of pressure pneumatic valve failure and maintenance matters needing attention

pressure pneumatic valve: the common failure modes of the hydraulic system of agricultural machinery, pneumatic pressure valve is a type of the element, applying more pressure pneumatic valve sudden failure will directly affect the normal operation of the machinery and equipment, this paper points the reason of the pressure of the pneumatic valve failure. ( Hydraulic pneumatic valve core and valve body is constantly produced when use wear, makes parts change size, shape and surface quality. ( Balance spring in hydraulic pneumatic valve, pneumatic valve core and valve seat, in the long-term work under variable load, fatigue and cracks, caused by spring, pneumatic valve seat sealing surface spalling, broken or damaged. ( In the process of the hydraulic pneumatic valve parts processing in the process of using the residual stress and residual load stress, more than the yield strength of material, parts parts deformation. ( In the hydraulic oil mixed with water or too much acid, after using a long time, the corrosion of hydraulic pneumatic valve parts, make its loss of accuracy. ( Pneumatic valve core and valve suites liquid unbalanced radial force, pressure to eventually make the pneumatic valve core clamping phenomenon in a pneumatic valve set inside wall. ( When hydraulic pneumatic valve manufacture or repair, did not meet the technical requirements; Improper safekeeping or parts, corrosion, mixed with dirt and so on.