Vofcit Pump Industry
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02
2023
-
06
The working principle and maintenance method of the internal gear pump
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Internal gear pumps are widely used in petroleum, chemical, shipbuilding, electric power, grain, petroleum, food, medical, building materials, metallurgy and defense research industries. Internal gear pump is through a pair of parameters and structure of the same involute gear rolling meshing, the tank in the low pressure oil to the operable high pressure oil important components, which is the engine mechanical energy into hydraulic energy power unit, today to introduce to you the internal gear pump working principle and maintenance method.
Working principle of internal gear pump
The gear pump works with two gears meshing with each other, and the requirements for the medium are not high. The general pressure is below 6MPa, and the flow rate is large. The gear pump installs a pair of rotating gears in the pump, one is active and the other is passive, and the two gears mesh with each other, dividing the entire working cavity in the pump into two independent parts. A is the suction cavity and B is the discharge cavity. When the gear pump is working, the gear is driven to rotate the manual gear, so that the gear meshes and escapes, a partial vacuum is formed on the suction side (A), and the liquid is sucked in. The sucked liquid fills the individual tooth curvatures of the gear, is transferred to the discharge side (B), and when the gear meshes, the liquid is extruded to form a high-pressure liquid, which is discharged out of the pump through the pump discharge port.
Maintenance method of internal gear pump
1. Fat is often added, the current pump works at high speed, the grease is volatile, and the bearing lubrication should be kept clean and pay attention to the addition.
2. The gear oil pump is often checked and maintained, and the electric oil drum pump is often checked, and it needs to be repaired, and the power line needs to be checked. Including whether the internal wiring, plug, switch is good, whether the insulation resistance is normal, whether the position of the brush tail is loose, whether the commutator is in good contact with the brush, whether the armature rotation expansion stator winding has appropriate opening phenomenon, whether the bearing and rotating parts are damaged, etc.
3. Store each component and exchange the same parts, when disassembling the gear pump, the components should be stored, the explosion surface of the explosion-proof parts, including pultrusion and other insulation pads and bushings can not be damaged, if damaged, should be replaced with new identical parts, substitute materials or materials lower than the original specification, all components should be assembled in the original position, not lost.
4. The gear oil pump should pay attention to the insulation resistance, and the electric pumping pump used in a long-term or humid environment should use 500 volts megameter to measure the insulation resistance of the winding before use. When the insulation resistance between the winding and the motor housing is less than 7 trillion euros, the winding should be dried.
5. The electric pump should be kept in a dry, clean and non-corrosive gas environment.
Gear pump is suitable for conveying lubricating oil or other liquids with similar properties without corrosive solid particles and fibers, temperature below 150, viscosity between 5 ~ 1500CST. At room temperature, in solidifiable and cold areas outdoor installation and process process, the test needs to be insulated.
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Maintenance process of internal gear pump
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Internal gear pump, do you understand?
The structure of the internal gear pump has the characteristics of simple, convenient processing, small size, light weight, strong self-absorption capacity, and insensitivity to oil pollution, and is widely used. China's gear pump industry has two major competitive advantages, on the one hand, it has the competitive advantage of low cost; At the same time, the rapid growth of domestic construction, petroleum, petrochemical and environmental protection markets and major water transfer projects have also provided important support for the development of China's gear pump industry.
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The structure of the internal gear pump
The internal gear pump is a gear pump with special acid resistance and wear resistance. Its characteristics are: install the active shaft and the ordinary attack shaft on the shell, install the transmission fish on a section where the active shaft is located in the shell, install the transmission fish meshing with the transmission fish teeth on the ordinary attack shaft, make a pair of transmission fish, set the inlet and outlet of raw materials on the shell, and set ceramic fiberboard on the inner cavity of the transmission fish pair under the cover content. The equipment improves the acid resistance and wear resistance of the gear pump according to the change of gear pump structure.
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The working principle and maintenance method of the internal gear pump
Internal gear pumps are widely used in petroleum, chemical, shipbuilding, electric power, grain, petroleum, food, medical, building materials, metallurgy and defense research industries. Internal gear pump is through a pair of parameters and structure of the same involute gear rolling meshing, the tank in the low pressure oil to the operable high pressure oil important components, which is the engine mechanical energy into hydraulic energy power unit, today to introduce to you the internal gear pump working principle and maintenance method.
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Classification, characteristics and applications of gear pumps
Gear pumps are generally divided into external meshing type (external gear pump) and internal meshing type (internal gear pump) according to the configuration mode of the meshing pair, and the internal gear pump includes a cycloid gear pump with a special tooth shape.