Working Principle
It adopts the principle of internal meshing. The pitch circles of the internal and external gears are closely adjacent to one side, and the other side is separated by the "crescent plate" on the pump cover. The driving internal teeth on the main shaft drive the external gear to rotate in the same direction. At the inlet, the teeth separate from each other to form a negative pressure to suck in the liquid. At the outlet, the teeth continuously engage and embed to squeeze out and output the liquid.
Structural Features
No liquid trapping phenomenon: The internal and external gears rotate in the same direction, avoiding the liquid trapping phenomenon, making the pump run more smoothly, and reducing the vibration, noise and wear caused by liquid trapping.
Small volume and large flow: With a compact structure, it can achieve a large flow output in a relatively small volume, effectively saving the installation space.
Low noise and long service life: It runs smoothly with low noise. At the same time, due to the small wear of the gears and the reasonable structural design, the service life of the pump is extended.
Performance Features
Strong self-priming ability: It can quickly suck in the liquid, and can work normally even under a relatively low suction pressure. It can transport a variety of liquids.
Smooth transportation: The output liquid flow is stable, without pulsation and with small vibration, which is suitable for occasions with high requirements for flow stability.
Wide viscosity adaptation range: It is especially suitable for transporting high-viscosity media, and the viscosity range is usually 0.2-100,000 cp.
Reversible transportation: Just change the rotation direction of the motor to realize the reverse transportation of the liquid.
Application Fields
Chemical and Petrochemical Industry: Used for transporting petroleum, additives, polymers, lubricating oils, waxes, asphalt, etc.
Plastic and Polyester Industry: It can transport polyester, epoxy resin, hardeners, isocyanates, etc.
Paint and Coating Industry: Suitable for transporting inks, inks, dyes, paints, solvents, etc.
Food Industry: It can be used for transporting vegetable oils, lecithin, syrups, chocolates, honey, etc.
Selection Key Points
Flow rate and pressure: According to the actual usage requirements, determine the flow rate and pressure parameters required by the pump, and select the appropriate model of the NCB type internal meshing gear pump.
Medium characteristics: Consider the characteristics of the transported medium such as viscosity, corrosiveness, temperature, etc., and select the appropriate material and sealing form to ensure the normal operation and service life of the pump.
Installation method: According to the on-site installation conditions, select the appropriate installation form, such as horizontal type, vertical type, etc.
