NBH Chemical Cycloid Gear Pump

NBHStructural Description of Petrochemical Cycloid Gear Pump

This series of gear pumps is a positive displacement pump, and the heart of the pump is a pair of special gears - cycloidal rotors, mainly composed of pump cover, wear-resistant plate, pump body, inner rotor, outer rotor, rear pump cover, sealing components, shaft, etc The shaft seal can be selected with packing seal or mechanical seal according to different media

NBHCharacteristics of Petrochemical Cycloid Gear Pump
The relative sliding speed of the pump rotor is very low, the operation is smooth, the wear is minimal, there is no trapped oil phenomenon, the noise is low, and the service life is long.

The area on the suction side of the pump is large, the volume between teeth changes slowly, the pressure pulsation is small, and the suction capacity is strong.

The flow rate of the pump is proportional to its speed, and automatic adjustment of the flow rate can be achieved with the help of a speed controller.

The inner and outer rotors of the pump are treated with special surface heat treatment for durability.

The pump has a compact and simple structure, with few components, easy disassembly and assembly, and stable and reliable operation.

The processing accuracy of the pump is high, and the volumetric efficiency can reach 80%.

NBHPetrochemical cycloidal gear pumpApplication fields:

●Petrochemical industry: heavy oil, heavy oil, fuel oil, crude oil, asphalt, grease, lubricating oil, resin;

●Daily chemical products: glycerin, fatty alcohols, sulfates, facial cleansers, facial cleansers, shampoos, dishwashers, hand sanitizers, cosmetics, skincare creams, toothpaste, soap, laundry detergent, slurries, etc;

●Fine chemicals: fuels, pigments, various pastes, adhesives, leather shoe oils, various colloidal materials, etc;

●Coatings: various paints, coatings, inks, insulating paints, resins, additives;

●Food: all kinds of ointment, extract, lotion, pill paste, syrup, health products, medicaments, etc.

NBHWorking principle diagram of petrochemical cycloidal gear pump
In an internal gear pump, the inner rotor is the driving wheel and the outer rotor is the driven wheel. The speed ratio between the inner and outer rotors is i=Z1/Z2. Due to the tooth difference between the inner and outer rotors, there is a "secondary meshing" during the meshing process Therefore, several independent fluid filled chambers can be formed With the meshing rotation of the inner and outer rotors, the volume of each fluid chamber changes differently. When the volume of the fluid chamber increases from small to large, a local vacuum is generated inside the fluid chamber. Under the action of atmospheric pressure, the liquid enters the pump chamber through the pump inlet pipeline and the annular groove on the pump cover and begins to suck The liquid absorption process ends when the volume of the packaging chamber reaches its maximum When the volume inside the fluid chamber decreases from large to small, the liquid inside the fluid chamber is squeezed out of the annular groove on the pump cover, which is the discharge process of the pump During the operation of the pump, one tooth of the inner rotor rotates once, creating a working cycle that completes the process of suction and discharge of the pump The inner rotor of a pump has Z1 teeth, and every time it rotates, there will inevitably be Z1 working cycles similar to the above. The pump continuously injects fluid outward through the Z1 working cycle to achieve the purpose of pump suction and discharge (See the figure below)

NBHThe significance of petrochemical cycloidal gear pump model

NBHPerformance parameters of petrochemical cycloidal gear pump