Centrifugal pump selection should pay attention to what? Author: Source centrifugal pump: Pump knowledge on the information we have introduced a series XBD fire pump, use, installation instructions, then we introduce to you a selection of centrifugal pumps pay attention to what for you?
Centrifugal pumps rely on impellers to agitate the centrifugal force of fluid rotation to produce pressure and transport fluids. When selecting a centrifugal pump , determine the purpose and performance of the pump and select the pump type. This choice starts with choosing the type and form of the pump. Then what principle does the pump choose? What is the basis?
First, the principle of pump selection
1. Make the type and performance of the selected pump meet the requirements of process parameters such as flow rate, head, pressure, temperature, cavitation flow, and suction stroke.
2, mechanical reliability, low noise, low vibration   Â
3. Economically, the total cost of equipment, operating costs, maintenance and management fees should be taken into consideration.
4. Centrifugal pump has characteristics of high speed, small volume, light weight, high efficiency, large flow, simple structure, no pulse infusion, stable performance, easy operation and convenient maintenance.
Therefore, centrifugal pumps should be used as much as possible except in the following cases:
When measuring requirements, choose the metering pump
High head requirements, small flow rates, and low flow rates. High-lift centrifugal pumps are available. Reciprocating pumps can be used. If cavitation requirements are not high, vortex pumps can also be used.
The head is very low, and when the flow rate is large, axial and mixed flow pumps can be used.
When the viscosity of the medium is larger (greater than 650~1000mm2/s), the rotor pump or reciprocating pump ( gear pump , screw pump ) may be considered.
The medium gas content is 75%, the flow is small and the viscosity is less than 37. 4mm2/s, the vortex pump can be used.
For occasions with frequent start-up or inconvenient irrigation, pumps with self-priming properties should be used, such as self-priming centrifugal pumps , self-priming vortex pumps , pneumatic diaphragm pumps, and electric diaphragm pumps .
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Blue Deep Pump Valve (Shanghai) Co., Ltd. () Specializing in the production of centrifugal pumps , fire pump manufacturers production base: Shanghai Jiangning Road 1220, Lane 2 Building, Room 1603
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