Selecting a suitable oil pump requires considering several key factors, including liquid properties, flow, pressure, pipeline layout and operating conditions.
Liquid properties
Liquid properties are an important basis for selecting an oil pump, including the physical properties of the liquid (such as temperature, density, viscosity) and chemical properties (such as corrosiveness and toxicity). These properties will affect the pressure calculation and required power of the system, and thus affect the type of pump selected. For example, corrosive liquids require pumps made of corrosion-resistant materials, while liquids containing solid particles require pumps made of wear-resistant materials.
Flow and pressure
Flow and pressure are two important performance data for selecting an oil pump. Flow is directly related to the production capacity and delivery capacity of the system. When a cycloidal gear pump is usually selected, the maximum flow can be 1.1 times the normal flow. The pressure needs to be amplified by 5% to 10% to determine the appropriate oil pump model to ensure stable operation under various working conditions.
Pipeline layout and operating conditions
The pipeline layout includes the liquid delivery height, distance and direction, which will affect the system pressure calculation and power verification. Reasonable pipeline design can reduce resistance loss and improve efficiency. Operating conditions such as the operating temperature of the liquid, the suction side pressure, the discharge side container pressure, etc., will also affect the selection of the oil pump. For example, high temperature liquids require the selection of high temperature resistant pump types and materials.
