NYP220 internal gear pump structural principle

NYP220 Internal gear pump gear common straight teeth, helical, herringbone gear, helical teeth, tooth profile is mainly involute arc type. Use of involute spur gear is usually a small gear pump, high temperature gear pump often shifted gears, handling high viscosity, high pressure polymer melt melt pump with involute helical gear gear and shaft are integrally formed, its rigidity and reliability is higher than the gear pump gear and shaft manufacturing alone. abroad low-pressure gear pump gear is often used square structure, that the gear tooth width is the tip diameter. tooth width less than the diameter of the addendum circle high viscosity gear pump high-pressure situations to reduce the diameter of the gear to the pressure receiving area of ​​the lower gears, bearings load.

    NYP220 Internal gear pump gear(high viscosity pump) transport medium viscosity, reduce the active resistance the progress the suction of the pump capacity necessary for the media heating or insulation commonly used electric heating elements, viscous liquid can heat an average temperature fluctuations, the delivery of high-viscosity liquids easily degrade, it is recommended that the fluid heating mode, especially large displacement gear pump fluid heating sub-built, the external structure of the so-called built-in refers to the gear pump sudden heat of the interior design of the pump or the end cap sets, external bolt will clamp the heat sets are joined together with the pump. to pass into the jacket steam, thermal oil, cooling water, according to the media details may be a built-in used to transport liquid temperature higher average requirements or the average cooling occasions require high temperature liquid. external structure of a lack of security or for less demanding temperature control, can be used when the electric heating. U.S. VIKING produced internal gear pump, the pump head departments jacket to control the temperature of the transmission fluid, whether in high or low temperatures, are available with an external jacket.
        When the shaft is rotated, by means of a spiral role and bearing two real differential pressure suction bearing, the bearing outside of the cryogenic liquid, after the bearing lubrication and cooling Provided just disengaged the interdental engaged, constitute an adequate lubrication, heat faster. spiral self-priming low-pressure lubrication system. strengths of the lubrication: bearing lubricant all the low temperature medium the viscous lubricant easy to form a carrying capacity of hydrodynamic oil film.