German ABITEK gear pump ABITEK model ABITEK price

ABITEK gear pumps are rotary pumps that transport liquids or increase their pressure by relying on the change and movement of the working volume formed between the pump cylinder and the 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 of the space on the disengaging side increases from small to large, creating a vacuum that draws in the liquid, while the volume of the space on the meshing side decreases from large to small, squeezing the liquid into the pipeline. The suction chamber and the discharge chamber are separated by the meshing line of the two gears. The pressure at the discharge port of the gear pump depends entirely on the magnitude of the resistance at the pump outlet.

ABITEK gear pump operating 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 a figure "8," with the two gears installed inside. The outer diameter of the gears and their sides fit closely with the housing. Material from the extruder enters between the two gears at the suction inlet and fills this space. As the teeth rotate, the material moves along the housing and is finally discharged when the two 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 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 without interruption. The pump flow rate is directly related to the pump 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, the pump body cannot have a gap-free fit, so it is impossible for the fluid to exit 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 well, achieving an efficiency of 93% to 98% for most extruded materials. This pump is not significantly affected by fluids whose viscosity or density varies during the process. If there is a damper, such as a filter screen or a restrictor placed on the discharge side, the pump will push the fluid through them. If this damper changes during operation—for example, if the filter screen 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). The rotational speed of a pump is actually limited, primarily depending 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 to fill the space between the two teeth on the suction inlet side 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 price.

ABITEK gear pump usage precautions

Gear pumps are suitable for various industries and handle a wide range of media. These gear pumps offer advantages such as robust structure, easy installation, easy disassembly, simple maintenance, uniform and continuous flow, minimal wear, and long service life. 1) During the use of the gear pump, frequent greasing is required. Since lubricating grease evaporates relatively easily, attention must be paid to replenishment and replacement. Additionally, keep the bearing area clean. 2) When using or after using the electric oil pump, place it in a relatively dry, non-corrosive, and clean environment. 3) Frequently inspect and maintain the gear pump during use. Check the electric oil drum, including the power cord, internal wiring, plug, and switch, to ensure they function normally. Inspect bearing components for any damage. 4) Preserve every component of the gear pump. During disassembly and inspection, keep each part clean and stored properly.

ABITEK gear pump maintenance

When using a gear pump, wear of the gear pump is unavoidable, therefore many problems will arise, so it is necessary to learn the most common maintenance techniques for gear pumps. This enables accurate diagnosis when problems occur. Routine maintenance techniques are as follows: 1) Maintenance of the working surface: If the wear on the pump cover working surface is relatively small, you can manually use a lapping method to remove the wear marks, that is, place a small amount of valve grinding compound on a surface plate or thick glass plate, then place the pump cover on top and perform lapping, until the wear marks are ground away, and the working surface is flat. If the wear depth on the working surface of the pump cover exceeds zero point one millimeter, turning followed by lapping must be used for repair. 2) Maintenance of the drive shaft bushing bore: The repair method for wear of the drive shaft bushing bore on the pump cover is the same as that for wear of the drive shaft bushing bore in the housing. Repair of the pump housing bore: After wear occurs in the pump housing bore, the bore lining method is always adopted for repair, which involves boring out the inner bore and fitting a cast iron or steel liner. After inserting the liner, bore the inner cavity to the required dimensions, and grind off the portion of the liner protruding from the end face, so that it is flush with the mating surface of the pump housing. 3) Maintenance of the valve seat: Pressure-limiting valves come in two types: ball valves and plunger valves. After the ball valve seat wears, place a steel ball on the valve seat, then gently tap the steel ball with a metal rod, until the ball valve seats tightly against the valve seat. If the valve seat is severely worn, ream to remove the wear marks, and then use the above method to achieve a tight seal. After the plunger-type valve seat wears out, a small amount of valve grinding compound can be added for lapping, lapping until a tight seal is achieved. The above describes some of the most basic maintenance procedures for components of gear pumps. During application, other different problems may also be encountered. These different problems must be carefully analyzed to identify their causes.

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