The working principle of the hydraulic gear bai pump is that when the gear rotates, the volume of the space on the side of the gear disengagement becomes larger, forming a vacuum, sucking the liquid, and the volume of the space on the gear meshing side becomes smaller, and squeezing the liquid into the pipeline go with.
In terms of terminology, a gear pump is also called a positive displacement device, which is like a piston in a cylinder. When one tooth enters the fluid space of another tooth, because the liquid is incompressible, the liquid and the tooth cannot be in the same Time occupies the same space, so that the liquid is mechanically squeezed out.
Due to the continuous meshing of the teeth, this phenomenon occurs continuously, so a continuous discharge amount is provided at the outlet of the pump, and the discharge amount is the same for every revolution of the pump. With the uninterrupted rotation of the drive shaft, the pump continuously discharges fluid. The flow of the pump is directly related to the speed of the pump.
In fact, there is a small amount of fluid loss in the pump, because these fluids are used to lubricate the bearings and both sides of the gears, and the pump body can never fit without clearance, so the fluid cannot be discharged from the outlet 100%, so A small amount of fluid loss is inevitable, which prevents the pump's operating efficiency from reaching 100%.
However, the pump can still run well, and for most extruded materials, it can still reach an efficiency of 93% to 98%.