Selection principle of gear oil pump gasket

Gear oil pump gasket selection principles, oil pump gasket manufacturers for you to introduce it:

Gear oil pump to ensure the output to the die, a pressure and velocity are the stability of the logistics. In many production processes, the inlet pressure is high, the low discharge pressure is also very common. For extruder to establish the purpose of high back pressure, must strengthen the mixing and melting, and through the die head flow is adjusted by the pump in order to achieve the final product size. To have gear oil pump in the extrusion line, as a result of the pump inlet pressure to maintain low (usually 500 psi), and from the screw extruder to pressurization process between the gear pump, the recycling of materials can be reduced from the Angle of hydraulic, gear oil pump is a kind of more effective than the extruder Build pressure device. Thus, screw extruder under given die head pressure, the output can be greatly improved. Pump can easily be needed to establish the die head pressure, so that you can reduce the back pressure of extruder. According to the general rules, back pressure of extruder for every 1000 psi, reduce its output in a given speed can be increased by 10%.

Gear oil pump gasket selection principle is, for the occasion of low demand, can be selected by experience, not timely replacement. But for those demanding occasions, such as explosive, highly toxic and flammable gas and highly corrosive liquid equipment, reaction tank and pipeline system, should be based on the working pressure, working temperature, sealing medium corrosion and combined sealing surface form. In general, gaskets with special properties should be considered under low temperature, corrosive media or vacuum conditions.

Flange surface roughness effect. Flange surface roughness has a great influence on the sealing effect, especially when non-soft gasket is used, the high degree of sealing surface roughness is one of the main causes of leakage. Soft sealing gasket on the flange surface smoothness requirements are much lower, this is because, it is easy to deformation, can block processing blade, thus preventing leakage. For soft gaskets, the flange surface is too smooth and adverse, because the interface leakage resistance at this time smaller.