German kendrion binder pump kendrion binder model kendrion binder price

kendrion binder pumps are also known as positive displacement devices. They function like a piston within a cylinder: when a tooth enters the fluid space of another tooth, the liquid and the tooth cannot occupy the same space simultaneously because liquids are incompressible. As a result, the liquid is mechanically squeezed out. Due to the continuous meshing of the teeth, this phenomenon occurs continuously, providing a continuous discharge volume at the pump outlet. The discharged volume is the same for each revolution of the pump. As the drive shaft rotates continuously, the pump discharges fluid without interruption. The flow rate of the pump is directly related to its rotational speed.

kendrion binder pump motor features

1) Compact structure, small size, and light weight: Composed of an aluminum alloy front cover, intermediate body, and rear cover, along with alloy steel gears and aluminum alloy pressure plates. Two DU bearings are press-fitted into the front and rear covers respectively. DU material is an ideal bearing material for gear pumps, significantly extending the service life of the gear pump. 2) Reliable operation: The pressure plate is the main component for radial and axial pressure compensation. It reduces bearing load and automatically adjusts the axial clearance of the gear pump, thereby effectively improving the performance indicators and operational reliability of the gear pump. The GM5 and GPC4 series gear motors offer four structural configurations: single rotation direction without front bearing, double rotation direction without front bearing, single rotation direction with front bearing, and double rotation direction with front bearing. Gear motors equipped with front bearings can withstand both radial and axial forces. 3) High speed and high pressure: Rotational speed ranges from 3000 to 4000 rpm. Theoretical torque ranges from 17N.m to 64N.m, with pressures reaching up to 20-25MPa. 4) Connection methods suitable for imported machinery and engineering equipment: Complies with SAE and national standard GB for mounting flanges, shaft extensions, and inlet/outlet port connections. Widely applicable in hydraulic systems for automobiles, tractors, engineering machinery, agricultural machinery, and other mechanical equipment.

kendrion binder pump working principle

The concept of a gear pump is straightforward. Its most basic form consists of two gears of identical size meshing and rotating within a closely fitted housing. The interior of this housing resembles a figure "8", with the two gears installed inside. The outer diameter of the gears and their sides fit tightly against the housing. Material from the extruder enters the space between the two gears at the suction inlet, filling this space. As the gears rotate, the material moves along the housing and is finally discharged when the teeth mesh. Gear pumps are also known as positive displacement devices. They function like a piston within a cylinder: when a tooth enters the fluid space of another tooth, the liquid and the tooth cannot occupy the same space simultaneously because liquids are incompressible. Consequently, the liquid is mechanically squeezed out. Due to the continuous meshing of the teeth, this phenomenon occurs continuously, providing a continuous discharge volume at the pump outlet. The discharged volume is the same for each revolution of the pump. As the drive shaft rotates continuously, the pump discharges fluid without interruption. The pump's flow rate is directly related to its rotational speed. In practice, there is a small amount of fluid loss within the pump because this fluid is used to lubricate the bearings and the sides of the gears. Furthermore, since the pump body cannot have a gap-free fit, it is impossible for the fluid to be discharged 100% from the outlet. Therefore, a small amount of fluid loss is inevitable, preventing the pump's operating efficiency from reaching 100%. However, the pump can still operate effectively, achieving efficiencies of 93% to 98% for most extruded materials. This type of pump is not significantly affected by changes in fluid viscosity or density during the process. If a damper, such as a filter screen or restrictor, is placed on the discharge side, the pump will push the fluid through them. If the damper changes during operation—for example, if the filter becomes dirty or clogged, or if the back pressure of the restrictor increases—the pump will maintain a constant flow rate until the mechanical limit of the weakest component in the system is reached (a torque limiter is usually installed). There is actually a limit to the rotational speed of a pump, which mainly depends on the process fluid. If oil is being transported, the pump can rotate at high speeds. However, if the fluid is a high-viscosity polymer melt, this limitation increases significantly. It is crucial that the space between the two teeth on the suction inlet side is fully filled with high-viscosity fluid. If this space is not completely filled, the pump cannot discharge an accurate flow rate. Therefore, the PV value (pressure × flow velocity) is another limiting factor and a process variable. Due to these limitations, gear pump manufacturers offer a range of products with different specifications and displacements (volume discharged per revolution). These pumps are matched to specific application processes to optimize system capacity and cost.

kendrion binder pump trapped oil phenomenon

For stable operation of a gear pump, the contact ratio of gear meshing must be greater than 1. Consequently, there are always two pairs of gears meshing simultaneously, trapping a portion of oil in the closed cavity formed between these two pairs of teeth. The volume of this closed cavity gradually decreases as the gears rotate, and then gradually increases. The reduction in the closed cavity volume compresses the trapped oil, generating high pressure. This causes the oil to squeeze out through gaps, leading to oil heating and imposing additional loads on components. Conversely, the increase in the closed cavity volume creates a local vacuum, causing dissolved gases in the oil to separate and resulting in cavitation. These effects produce strong vibration and noise, known as the trapped oil phenomenon in gear pumps. 1) Hazards: Significant radial unbalanced forces can cause shaft bending, contact between the gear tips and the housing, accelerated bearing wear, and reduced bearing life. 2) Elimination method: To eliminate trapped oil, relief grooves are typically machined into the side cover plates. When the closed cavity volume decreases, it connects to the pressure chamber via the left relief groove. When the volume increases, it connects to the suction chamber via the right relief groove.

Weidou Intelligent Technology specializes in selling German kendrion binder centrifugal pumps, kendrion binder gear pumps, kendrion binder diaphragm pumps, kendrion binder centrifugal pumps, kendrion binder piston pumps, kendrion binder vacuum pumps, kendrion binder screw pumps, kendrion binder submersible pumps, kendrion binder peristaltic pumps, kendrion binder lubrication pumps, kendrion binder vane pumps, kendrion binder metering pumps, kendrion binder hand pumps, kendrion binder drum pumps, kendrion binder lobe pumps, kendrion binder booster pumps, kendrion binder liquid pumps, and kendrion binder air pumps. All products are original imports from Germany. Customers are welcome to inquire and place orders.