The submersible gear pump is mainly composed of components such as the pump body, gears, main and passive shafts. There is a pair of meshing gears in the pump casing, one of which is the driving gear and the other is the driven gear. When the gears rotate, in the left - hand liquid - suction cavity where the teeth gradually disengage, the closed volume between the teeth increases, creating a local vacuum. Under the action of the pressure difference, the liquid is sucked into the liquid - suction chamber. As the gears rotate, the liquid is pushed forward in two paths between the gears and the pump casing by the gears and sent to the right - hand liquid - discharge cavity. In the liquid - discharge cavity, the two gears gradually mesh, the volume decreases, and the liquid between the gears is squeezed to the liquid - discharge port.
Flow Rate: Usually marked as 200L/H, which means it can transport 200 liters of liquid per hour.
Pressure: Taking the LYB series vertical submersible gear pump as an example, the pressure of the LYB - 200 model is 0.35Mpa.
Rotational Speed: Generally, it is 1500r/min. However, the rotational speed may be adjusted according to different models and usage scenarios.
Diameter: Generally, it is Ø50, referring to the diameter size of the pump inlet and outlet, with the unit of millimeter.
Motor Power: For the LYB - 200 model, the matched motor power is 4.0KW, and the motor model is Y112M - 4.
Vertical Structure: It adopts a vertical design and can be extended to five meters in one - meter sections. It can work submerged in oil, solving the problems that a general horizontal gear oil pump cannot suck oil from a deep oil level and its suction capacity decreases after a period of use.
Component Composition: It is mainly composed of components such as the pump body, gears, main and passive shafts, vertical chassis, vertical support, connecting pipes, extension shafts, and motor connection plates. The structure is relatively simple, facilitating installation, maintenance, and repair.
Applicable Media: It is suitable for transporting crude oil, heavy oil, diesel, machine oil, vegetable oil, etc., which have an oil temperature below 200℃, are non - corrosive, and do not contain hard particles and fibers, as well as other liquids with similar properties.
Application Industries: It is widely used in industries such as petroleum, chemical engineering, chemical fiber, viscose, sulfuric acid, liquid caustic soda, and asphalt. It can directly transport the liquid in the storage tank to the process pipeline.
Solving Oil - suction Difficulties: Since it works submerged in oil, it can easily solve the problem that a general horizontal gear oil pump cannot suck oil from a deep oil level, as well as the problem of the decrease in suction capacity of the gear pump after a period of use, greatly improving the service life and working reliability of the pump.
Convenient Installation: It can be used by inserting it into the oil tank or placing it on the oil tank. There is no need for a complex installation process, saving installation time and cost.
Stable Transportation: It can maintain a relatively stable transportation flow rate, with low pulsation, good continuity of the transported medium, and will not generate eddy currents or run idly, ensuring the stability of the production process.
Medium Limitation: Although it can transport a variety of liquids, it is not suitable for liquids containing hard particles, fibers, and those with strong corrosiveness. Otherwise, it will cause wear and corrosion of the gears and the pump body, affecting the normal operation and service life of the pump.
Pressure Limitation: Generally speaking, the output pressure of the submersible gear pump is relatively low, and it may not meet the requirements of some occasions that require high - pressure transportation.
Limited Flow Rate Adjustment: Under normal circumstances, it is relatively difficult to adjust the flow rate of the submersible gear pump. Although it can be adjusted to a certain extent through methods such as variable - frequency control, the adjustment range is relatively limited.
