what are flow Characteristics of Batte melt pump?

　　Terms related to the melt pump flow

　　* Theoretical displacement theoretical flow

　　* Instantaneous flow actual flow

　　Theoretical displacement melt pump

　　The melt pump discharge per revolution of the melt volume , known theoretical displacement pump or the displacement of said pump unit is cc / r or or cm / r. Characterized generally much displacement pump specifications.

　　Theoretical flow

　　Ignore the influence of the leakage flow rate , a melt pump according to the calculated geometry of the unit , the flow within the theoretical amount of melt flowing through the melt pump is called pump. Generally divided into volume flow, mass flow. A melt pump speed that is obtained by multiplying the theoretical displacement volume flow , in units of cm / min or cc / min, l / min. This value is then multiplied by the density of the melt get melt mass flow rate of the pump is generally used theoretical g / min or kg / h, t / h , said said .

　　Instantaneous flow

　　The melt pump discharge volume of the melt of a transient , generally refers to the theoretical volume flow volume flow .

　　Actual flow

　　Actual flow melt pump means actually melt pump delivery capacity. Since there is always a melt pump there is a certain clearance gap , so there is a certain amount of melt pump leakage flow is always the number of the melt during transport . Therefore, the actual flow rate Q is subtracted from the theoretical flow of various leakage flow gotta get .

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