Working principle of Johnson Pump impeller pump F5B-19

Working principle of Johnson Pump impeller pump F5B-19

Product Structure and Working Principle

1. Integrated coaxial structure

F5B-19 adopts a coaxial structure with a direct connection between the motor and pump head, without coupling, gear reduction, or transmission clearance. The motor rotor directly drives the impeller to rotate, resulting in high power transmission efficiency, low mechanical losses, and low operating noise. The coaxial structure significantly shortens the overall length, reduces volume, and facilitates installation in narrow spaces, making it suitable for integrated use in vehicles, aircraft, ships, and equipment.

2. Centrifugal impeller conveying principle

The pump body adopts a closed or semi open centrifugal impeller. When the motor rotates at high speed, the impeller drives the fluid to make circular motion. Under the action of centrifugal force, the fluid is thrown towards the outside of the pump casing, forming a high-pressure zone and discharged from the outlet; At the same time, a low-pressure zone is formed at the center of the impeller, and fluid is continuously drawn into the pump chamber under atmospheric pressure, achieving continuous and stable fluid transport.

The centrifugal structure has the characteristics of stable flow rate, gentle pressure, low risk of cavitation, and low shear force on the medium, making it suitable for transportation scenarios that require no damage to the fluid state, such as circulating cooling, cleaning water supply, low-temperature liquid transportation, etc.

3. Pump casing and overcurrent components

The pump casing is made of high-strength engineering plastic or metal alloy material, which has high structural strength, impact resistance, corrosion resistance, and is not easily deformed. The flow components (impeller, guide chamber, inlet and outlet channels) are made of materials compatible with the medium, with smooth surfaces, smooth channels, and no stagnant areas, which can reduce fluid resistance, improve hydraulic efficiency, and avoid impurity deposition and blockage.

Johnson model example:

MW2 MG12/M7N single action, cooling/heating sleeve, no reduction, shaft protection sleeve

Johnson CT 125-250 NG1 M5 L2

Johnson CT 100-250 NG1 M5 L2

MW3 HJ92N/HJ977GN single action, cooling/heating sleeve, soothing, shaft protection sleeve, ink cartridge seal

CARTRIDGE-DICHTUNGEN with quenched or double acting barrier pressure system

MQ2 MG12/M7N single simulation, without reduction, also has a non pressure quenched shaft protective sleeve

4. Shaft seal and sealing system

The F5B-19 is equipped with a high-precision wear-resistant shaft seal, which adopts a mechanical seal or pressure balanced structural design. It has low friction, long service life, and leakage prevention characteristics, and can maintain good sealing effect under long-term continuous operation. The shaft seal system effectively prevents liquid from seeping into the motor chamber, protecting the safe operation of the DC motor while avoiding external dust and water vapor from entering the pump body, thereby improving the overall service life.

5. 24V DC motor module

The motor part is specially designed for 24V DC environment optimization, with the characteristics of smooth start-up, stable speed, high efficiency, low heat generation, and low energy consumption. The motor is made of high-temperature resistant insulation materials and high-precision bearings, supporting long-term continuous operation. It has overcurrent protection, locked rotor protection, and voltage fluctuation adaptability, and can work stably in the fluctuation environment of the vehicle power supply.

Working principle of Johnson Pump impeller pump F5B-19