Shielded pump classification features

October 04 18:04:08, 2022

According to the temperature, pressure of the liquid to be transported, whether particles and viscosity are different or not, the shield pump can be divided into the following types: 1. The basic type (standard type) The temperature of the conveying medium does not exceed 120 â„ƒ and the lift does not exceed 100m. Various other types of shielding pumps are based on the basic type of modification and improvement. Second, the reverse circulation type This type of shielding pump, the bearing lubrication, cooling and motor cooling liquid flow direction and the basic opposite. The main features of reverse circulation pump is not easy to produce cavitation, suitable for conveying easily vaporized liquid, sometimes also called easy vaporization type. Third, high temperature transmission medium temperature up to 450 â„ƒ. Usually add a cooling water jacket outside the shielded motor and cooling tube in the external circulation tube, the high temperature circulating liquid cooling to reduce the motor and bearing temperature. In the case of small power, some manufacturers do not use coolant, but in the motor to set the cooling fins and the use of special windings to adapt to conditions, the use of temperature generally can not exceed 400 â„ƒ. Fourth, the high melting point In the pump hydraulic end and the motor side with a jacket, the jacket can be accessed through the steam or a certain temperature of the liquid to prevent crystallization of high melting point liquid. Pump external circulation tube also plus insulation (heating) jacket. Five, high-pressure shielding pump housing is a high-pressure container, so that the pump can withstand high system pressure. In order to support the shield under the internal high pressure, the stator coil itself can be used as a pressure bearing. Can also be made into high temperature, high pressure shielding pump operation. Six, self-priming pump inlet than the impeller center is much higher, after stopping the pump, when there is no liquid in the suction pipe, the impeller and the pump chamber is always filled with liquid, then do not have to start when the pump, the pump can jobs. Self-priming pumps are particularly suitable for extracting liquids from underground containers. In addition, according to different methods can be divided into submerged, mud type, high pressure pipeline type and designed for ships, nuclear power plants and absorption refrigeration devices with various types of shielding pump. Can also be divided into vertical, horizontal, online and single-level, multi-level and other different types.
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Item Display

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