How to select the correct type of internal gear pump?
2021-04-19 11:26:59
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Internal gear pumps are also called high-viscosity pumps or high-viscosity gear pumps. They are different from ordinary external gear pump gears. The internal gear pump consists of an outer rotor, which is separated and fixed by a crescent plate and a pin. The rotor, the inner and outer rotors run in the same direction, and they are relatively stable after running, with low noise and no pulsation. Especially suitable for conveying highly viscous materials.
The selection of internal gear pumps is more complicated than external gear pumps. What are the main selection factors? Hebei Shenghui Pump Co.,Ltd. will talk about it for everyone.
1. Material attributes must be determined
The internal gear pump mainly transports high-viscosity liquids. It is necessary to provide the viscosity parameters of the material. The viscosity unit is Liber or Rees, which can be converted into a common viscosity unit through the viscosity under the work specified by the user.
In addition, the chemical and physical properties of the materials should also be understood, such as the crystallization temperature, whether it contains solids, whether it is acid-base, and so on.
2. The resistance of the inlet and outlet pipelines should be calculated well
When the internal gear pump is applied to the user site, it must be connected to the on-site inlet and outlet pipes. This requires the user to provide accurate piping parameters in advance, such as pipe diameter, pipe length, vacuum conditions, valve and elbow installation conditions According to the actual pipeline conditions, the engineers of Shenghui Pumps were asked to calculate the accurate pipe resistance of the inlet and outlet.
3. The configuration requirements should be stated in advance
After buying back the internal gear pump, it is common for customers to suggest that the flange standard does not match or the motor does not match. These questions should be mentioned in advance, or the sales engineer should ask in advance. Different users have different requirements for equipment configuration. For example, the pump material should be stainless steel, the flange should meet certain standards, the motor should be frequency conversion explosion-proof and meet certain grades, etc. The material matching of the gear pump itself or the specific requirements of the motor should be stated in advance.
Internal gear pumps can have heat preservation type, magnetic drive type, belt connection type, and motor direct connection type. Which one to use depends on the actual working conditions. You should not blindly choose the type yourself, or It is better to ask professional engineers from the manufacturer.
Hebei Shenghui Pump Co.,Ltd. is a manufacturer mainly engaged in the production and research of industrial pumps. The one-stop service of production, research and development, process, technology and after-sales allows users to have no worries.
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