The influencing factors of pneumatic vacuum pneumatic valve seal

smaller due to the differential pressure pneumatic relief valve control and high precision. This, need to decompression for pneumatic pneumatic valve debugging test, and make it meet the requirements, if error, mechanical adjustment can be performed. Found in the commissioning process of the pneumatic vacuum pneumatic valve, pneumatic pressure pneumatic valve open closed after more difficult with the phenomenon of indicators of closure pressure short of asks, debugging success rate is low. For the pneumatic vacuum pneumatic valve problems in the process of debugging and connecting with the actual working process of the pneumatic vacuum pneumatic valve, analysis may affect pneumatic pressure pneumatic valve sealing performance and closure pressure of various factors:
a pneumatic valve, pneumatic pressure don't work for a long time, the full force of the spring on the sealing face of the pneumatic valve core, if the seal face width is too narrow, the larger pressure, may cause damage on sealing surface, cause poor sealing. If at the same time, the pneumatic valve core of the sealing material is made of soft rubber material, easy to cause deeper impression, produce plastic deformation, reduces its sealing performance.
2, sealing surface quality is good or bad, directly affect the closing sealing. Sealing surface geometric accuracy and surface roughness has a great relationship with sealing. If processing method is undeserved, metal sealing surface in the processing of micro rough and corrugated will affect the sealing effect.
3, under the condition of equal pressure, temperature, viscosity of medium is smaller than viscous medium leakage. Liquid medium than the gas medium easy to seal so considering the allowable medium pneumatic valve design. Medium temperature can cause thermal deformation on sealing surface, can cause thermal gradient in the sealing material, sealing surface caused by warp.
4, pneumatic pressure pneumatic valve, pneumatic valve core is the core component, its means of sealing, sealing material, and guide the choice of location can impact pneumatic vacuum pneumatic valve sealing reliability. Among them, the sealing methods mainly include: axial type, desktop and cone cone form. Among them, if the pneumatic valve core and the choice of pneumatic valve guide positioning is not reasonable or machining accuracy can not meet the requirements, all can cause the stability of the pneumatic valve core, spring pressure, reduce the pneumatic valve core and the sealing performance between the pneumatic valve sealing surface.