Centrifugal pump works

Jiulong Pump: When the centrifugal pump is started, the pump shaft drives the impeller to rotate at a high speed together, forcing the pre-filling liquid to rotate between the blades. Under the centrifugal force of inertia, the liquid moves radially from the center of the impeller to the outer periphery. Liquid flows through the impeller in the process of gaining energy, static pressure can increase the flow rate increases. When the liquid leaves the impeller and enters the centrifugal pump shell, due to the gradual enlargement of the flow channel in the shell and deceleration, some of the kinetic energy is converted into static pressure energy and flows into the discharge pipe in the tangential direction finally. Therefore, the snail-shaped pump housing is not only a collection of components from the impeller out of the liquid, but also a transformable device. When the liquid thrown from the center of the impeller to the periphery at the same time, the center of the impeller to form a low pressure zone, the tank surface and the impeller center of the total potential difference under the action of the liquid was sucked into the impeller center. Depending on the continuous operation of the impeller, the liquid is continuously aspirated and discharged. The mechanical energy obtained by the liquid in the centrifugal pump ultimately appears as an increase in static pressure energy. The role of the impeller is to transfer the mechanical energy of the prime mover directly to the liquid to increase the hydrostatic and kinetic energy of the liquid (mainly increasing the static pressure energy). 1. The role of impeller impeller is the mechanical energy directly to the liquid, in order to increase the hydrostatic pressure and kinetic energy (mainly to increase static pressure). Impeller has open, semi-closed and closed three. The open impeller has no cover plate on both sides of the blade, which is simple in manufacture and convenient in cleaning. It is suitable for conveying materials containing a large amount of suspended matter, which has low efficiency and low pressure of liquid to be transported. The semi-closed impeller has no cover on the suction inlet side Plate, and on the other side of the cover, suitable for conveying easily sediment or particles containing materials, the efficiency is lower; closed impeller impeller on both sides of the blade has a front and rear cover, high efficiency, suitable for the delivery of impurities Clean liquid. Most of the centrifugal pump impeller for such. 2. Pump shell role is to seal the impeller in a certain space, in order to impeller role in the suction and out of the liquid. Centrifugal pump casing made of spiral shape, it is also known as volute. Due to the gradual enlargement of the cross-sectional area of ​​the flow passage, the high-speed liquid thrown out from the impeller gradually reduces the flow velocity and effectively converts part of the kinetic energy into static pressure energy. Pump housing not only brings together the liquid thrown by the impeller, but also an energy conversion device.

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