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The most basic form of the Maximator pump consists of two gears of identical size meshing and rotating within a closely fitted housing. The interior of this housing resembles the shape of the number "8", with the two gears installed inside; the outer diameters and sides of the gears fit tightly against the housing. Material from the extruder enters between the two gears at the suction inlet, fills this space, moves along the housing as the teeth rotate, and is finally discharged when the two teeth mesh.

Maximator 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 components such as 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: High speed ranges from 3000 to 4000 rpm, with theoretical torque from 17N.m (N.m) to 64N.m, 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 to hydraulic systems in automobiles, tractors, engineering machinery, agricultural machinery, and other mechanical equipment.

Maximator pump working principle

The concept of a gear pump is very simple. 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 the shape of the number "8", with the two gears installed inside; the outer diameters and sides of the gears fit tightly against the housing. Material from the extruder enters between the two gears at the suction inlet, fills this space, moves along the housing as the teeth rotate, and is finally discharged when the two teeth mesh. A gear pump is also known as a positive displacement device. Similar to a piston in a cylinder, when one tooth enters the fluid space of another tooth, the liquid and the tooth cannot occupy the same space simultaneously because the liquid is incompressible. Thus, 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 per revolution is constant. As the drive shaft rotates uninterrupted, the pump discharges fluid uninterrupted. The pump flow rate is directly related to the pump speed. In practice, there is a small amount of fluid loss within the pump, as this fluid is used to lubricate the bearings and the sides of the gears. Since the pump body cannot have a gap-free fit, it is impossible for the fluid to be discharged from the outlet 100%. Therefore, a small amount of fluid loss is inevitable, preventing the pump's operating efficiency from reaching 100%. However, the pump can still operate well, achieving an efficiency of 93% to 98% for most extruded materials. This 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 this damper changes during operation—i.e., if the filter becomes dirty or clogged, or if the back pressure of the restrictor increases—the pump will maintain a constant flow until the mechanical limit of the weakest component in the system is reached (a torque limiter is usually installed). The speed of a pump is actually limited, primarily depending on the process fluid. If transmitting oil, the pump can rotate at high speeds; however, if the fluid is a high-viscosity polymer melt, this limitation increases significantly. It is crucial to fill the space between the two teeth on the suction side with high-viscosity fluid. If this space is not fully 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 price.

Maximator 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 by these two pairs of gear teeth. This closed cavity gradually decreases in volume as the gears rotate, and then gradually increases. The reduction in the closed cavity volume compresses the trapped oil, generating high pressure that forces the oil out through gaps, causing heating and imposing additional loads on components. Conversely, an increase in the closed cavity volume creates a local vacuum, causing dissolved gases in the oil to separate and produce cavitation. These effects generate 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 Maximator gear pumps, Maximator gear pumps, Maximator diaphragm pumps, Maximator centrifugal pumps, Maximator piston pumps, Maximator vacuum pumps, Maximator screw pumps, Maximator submersible pumps, Maximator peristaltic pumps, Maximator lubrication pumps, Maximator vane pumps, Maximator metering pumps, Maximator hand pumps, Maximator barrel pumps, Maximator cam pumps, Maximator booster pumps, Maximator liquid pumps, Maximator air pumps. Original imports from Germany. Welcome inquiries and orders from users.