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Mud Pump the Classification and Function .pdf

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Mud Pump-the Classification and Function
Mud pump-function
It has two main performance parameters namely displacement and pressure.
Displacement will be calculated from several liters per minute. It is related to
borehole diameter and fluid speed. It required that the back flushing fluid velocity
able to run away drill cuttings, cutting down rock powder from the bottom of the hole
timely and set them on ground reliably. When the geological core drilling, the general
rate of return from 0.4 to 1 m / min or so. Pressure of the pump depends on the depth
of the borehole, the fluid resistance through the channel and the fluid nature of the
transmission, etc. Deeper drilling, the larger the pipeline resistance, the higher the
pressure required.

With the change of the depth of the hole diameter, it is required that
displacement of the pump can be adjusted at any time. Transmission mechanism or
hydraulic motor provided in the pump can adjust its speed to achieve the purpose of
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changing the displacement. In order to accurately grasp the change in pump pressure
and displacement, the mud pump pressure gauges and flow meters to be installed to
make drilling person to understand the functioning of the pump. At same time, drilling
person determine whether the normal status changes bore hole to prevent the
occurrence of accidents according to pressure changes.
Mud pump-classification
Mud pump can be divided into double-acting and single-acting. Single-acting
mud pump complete only one suction drainage action in a piston reciprocating cycle.
However, the double-acting one can complete two suction drainage action. According
to number of cylinders, the mud pump can be segmented into single-cylinder twin
and triplex.
Sewage mud pump is single stage single suction vertical centrifugal pump. It
consists of volute, impeller, shaft, pump casing, support tube, motor base, electric
motor. Volute, pump housing, motor housing, impeller nut is produced by cast iron.
They possess good corrosion resistance and their machining processes is easy. The
mud pump seat equipped with four oil seal and sleeve can prevent shaft wear and
prolong the service life of the shaft.

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