German ECODORA pump ECODORA model ECODORA price

ECODORA pumps are rotary pumps that transport liquids or increase their pressure by changing and moving the working volume formed between the pump cylinder and meshing gears. Two enclosed spaces are formed by two gears, the pump body, and the front and rear covers. When the gears rotate, the volume on the disengaging side increases from small to large, creating a vacuum that draws in liquid, while the volume on the meshing side decreases from large to small, forcing the liquid into the pipeline. The suction chamber and discharge chamber are separated by the meshing line of the two gears. The pressure at the gear pump outlet depends entirely on the resistance at the pump outlet.

ECODORA pump motor features

1) Compact structure, small size, and light weight: Composed of front cover, intermediate body, and rear cover made of aluminum alloy, gears made of alloy steel, and pressure plates made of aluminum alloy. 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, reducing bearing load and automatically adjusting the axial clearance of the gear pump, thereby effectively improving performance indicators and operational reliability. GM5 and GPC4 series gear motors offer four structural configurations: single rotation without front bearing, double rotation without front bearing, single rotation with front bearing, and double rotation with front bearing. Gear motors with front bearings can withstand both radial and axial forces. 3) High speed and high pressure: 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 installation flanges, shaft extensions, and inlet/outlet port connections. Widely applicable in hydraulic systems of automobiles, tractors, engineering machinery, agricultural machinery, and other mechanical equipment.

ECODORA pump working principle

The concept of a gear pump is 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 an '8' shape, with the two gears installed inside. The outer diameter and sides of the gears fit closely with the housing. Material from the extruder enters the space between the two gears at the suction inlet, filling this space. As the teeth rotate, the material moves along the housing and is finally discharged when the teeth mesh. Gear pumps are also known as positive displacement devices. Similar to a piston in a cylinder, when one tooth enters the fluid space of another, the incompressible nature of the liquid means the liquid and the tooth cannot occupy the same space simultaneously; 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. Pump flow rate is directly related to pump speed. In practice, there is a small amount of fluid loss within the pump because some fluid is used to lubricate the bearings and the sides of the gears, and the pump body cannot have a gap-free fit. Therefore, fluid cannot be discharged 100% from the outlet, making minor fluid loss inevitable. This prevents the pump's operating efficiency from reaching 100%. However, the pump can still operate well, achieving efficiencies 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). There is actually a limit to the pump's speed, which mainly depends on the process fluid. If pumping oil, the pump can rotate at high speeds, but this limit increases significantly when the fluid is a high-viscosity polymer melt. 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.

ECODORA pump usage precautions

1) Install a leakage protector: A leakage protector, also known as a life-saver, serves a purpose evident from its name. Since submersible pumps operate underwater, leakage can easily cause energy loss or even electric shock accidents. If a leakage protector is installed, it will cut off the power supply to the submersible pump whenever the leakage current exceeds the protector's trip current value (generally not exceeding 30 mA), preventing energy waste due to leakage and ensuring safety. 2) Do not start if power voltage is abnormal: On long low-voltage supply lines, low voltage at the end of the line is common. When phase voltage is below 198 V and line voltage is below 342 V, the submersible pump motor speed drops. If it fails to reach 70% of the rated speed, the starting centrifugal switch will close, causing the starting winding to remain energized for too long, leading to overheating and potentially burning out the winding and capacitor. Conversely, excessive voltage causes motor overheating and burns out the winding. Therefore, during operation, operators must monitor the power voltage. If it is more than 10% below the rated voltage or more than 10% above the rated voltage, stop the motor, identify the cause, and resolve the fault. 3) Avoid frequent switching: Do not frequently switch the submersible pump on and off. When the electric pump stops, backflow occurs. Immediate restart causes the motor to start under load, resulting in excessive starting current that can burn out the winding. High starting current means frequent starts can also damage the submersible pump motor winding. 4) Do not allow the submersible electric pump to operate under overload for extended periods: To avoid prolonged overload, do not pump water with high sand content, and monitor whether the current value matches the rating on the nameplate. If the current is too high, stop the machine for inspection. Additionally, do not let the electric pump run dry for too long to prevent motor overheating and burnout. 5) Ensure correct motor rotation direction: Clarify the motor's rotation direction. Many types of submersible pumps can discharge water in both forward and reverse rotations, but reverse rotation results in lower flow and higher current. Prolonged reverse rotation will damage the motor winding. 6) Cable installation and insulation resistance requirements for submersible electric pumps: When installing the submersible pump, keep the cable suspended and avoid excessively long power cords. Do not subject the cable to stress when lowering or lifting the pump to prevent power cord breakage. Do not let the submersible pump sink into mud during operation, as this causes poor motor heat dissipation and burns out the motor winding. During installation, the motor's insulation resistance should not be less than 0.5 MΩ. 7) Inspect frequently and repair issues promptly: Regularly check the motor. If cracks are found in the bottom cover, or if the rubber sealing ring is damaged or failed, replace or repair it immediately to prevent water ingress into the submersible pump.

Weidou Intelligent Technology specializes in selling German ECODORA hand pumps, ECODORA gear pumps, ECODORA diaphragm pumps, ECODORA centrifugal pumps, ECODORA piston pumps, ECODORA vacuum pumps, ECODORA screw pumps, ECODORA submersible pumps, ECODORA peristaltic pumps, ECODORA lubrication pumps, ECODORA vane pumps, ECODORA metering pumps, ECODORA hand pumps, ECODORA drum pumps, ECODORA lobe pumps, ECODORA booster pumps, ECODORA liquid pumps, ECODORA air pumps. Original German imports. Welcome inquiries and orders.