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2024年3月25日发(作者：python字母大小写转换)
Gear pump
Chinese Name: gear pump
Name: gear pump
Definition: rely sealed in a housing of two or more gears, the work space is
generated in the process of mutual engagement volume change to liquid delivery
pump.
Applied disciplines: mechanical engineering (a subject); drive (two subjects);
hydraulic transmission (two subjects)
The gear pump is to rely on the change and moving of the working volume of
the pump cylinder and the ring gear formed between rotary pumps for conveying
liquid or so pressurized. Form two closed space by two gears, pump, front and rear
cover, when the gear is rotated, the gear is disengaged from the side of the space
volume grew larger, forming a vacuum, the liquid suction, the gear meshing side of
the volume of the space from large small, while the liquid squeeze into the pipeline
to go. The suction chamber and the discharge chamber is spaced by two gears
meshing line to. The outlet pressure of the gear pump is entirely dependent on the
size of the pump source resistance.
The concept of the working principle of the gear pump is very simple, i.e. in its
most basic form is the same as the two dimensions of the gear in a close fit within
the housing.
The engagement rotation, the interior of the housing is similar to the "8"
shape, the two gears are mounted on the inside, the outside diameter of the gear,
and both sides of the housing close fit. From the extruder, the material in the
suction port into the middle of the two gears, and to fill this space, the rotation
direction of the housing with the teeth movement, and finally discharged in the
two toothing.
Speaking in terminology, gear pump, also called a positive displacement
device, i.e. as a cylinder bore of the piston, when one tooth into the fluid space of
another tooth, the liquid is mechanically squeezed row out. Because the liquid is
incompressible, so the liquid and the tooth at the same time can not occupy the
same space, so that the liquid has been excluded. This phenomenon continuously
occurs due to the continuous engagement of the teeth, and, therefore, at the
outlet of the pump provides a continuous excluded volume pump per revolution,
the same amount of discharged. With the uninterrupted rotation of the drive shaft,
the pump also continuously discharged fluid. The pump flow is directly related to
the speed of the pump.
In fact, in a pump with a small amount of fluid loss, which makes the efficiency
of the operation of the pump can not reach 100%, because these fluids are used to
lubricate bearings and gears on both sides, and the pump body can never be a
clearance fit, so can not make 100% of fluid from the outlet, so a small amount of
fluid loss is inevitable. However, the pump or can run well, can still reach an
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