Compactness, reliability and simplicity of design are just some of the advantages of components and assemblies that must be possessed by equipment used to create high pressure when pumping liquid. All of these advantages have widely used gear pumps.
How a gear pump works
Structurally, the product is a pair of gears, which are located in a stator (dense housing). Both elements have teeth for engagement. An electric motor drives one gear, which turns the other.
During operation, the teeth capture the pumped liquid, squeeze it to the body and move it from the suction side to the pressure side. In this case, the overflow of the working substance is excluded due to the same tight adhesion of the teeth.
gear pumps by the nature of liquid displacement - rotary-rotary machines ... The displaced substance in the body of such a product moves in a cavity perpendicular to the axis of rotation. As a result of the operation of the gears, the liquid from the suction cavity is transferred to the injection chamber. In this case, the displacers perform only rotational movements.
The rotating elements of the pumps can have the shape of eights, this is the case if the number of teeth in the gear is reduced to a minimum - to two. Since, unlike gear pumps, such gears do not have engagement, in this type of supercharger, the drive from the power unit (engine) must be provided to both rotating elements.
The most widely used external gear pumps. Such a product has a pair of gears, one of which acts as a leading one, the other as a driven one. As the elements rotate, the pumped liquid, which is located in the cavities of the teeth, is redirected into the pressure cavity.
Units of this type are distinguished by their simplicity of design, high degree of reliability, and low weight. Internal gearing blowers are quite compact, but such products are more complex in design.
If you need to increase the fluid supply, you should use products with 3 gears or more. In a pump of this type, driven rotating elements are located around the central axis of the drive gear. In order to increase the pressure, multistage gear pumps are used. In this case, the supply of each subsequent stage is weaker in strength than the previous one. The excess liquid is removed through the bypass valve.
Benefits of gear pumps
Gear pumps have a number of distinct advantages. This is the reason for their popularity. To the pluses of such nesti
