Illustrated Structure and Principles of Canned Motor Pump

Based on the different requirements of the conveyed liquid, such as temperature, pressure, presence of particles, and viscosity, shielded pumps can be roughly divided into the following types:

1. Basic Type

A basic type of canned motor pump that handles low to medium temperature slurry-free liquids with zero-leakage.
A wide range of customization is available to meet various required specifications.

2. Basic Type - Hollow Shaft

Similar to the basic model, it features a hollow shaft, transforming the external shaft circulation into internal shaft circulation

3. Reverse Circulation Canned Motor Pump

It is applicable to easily vaporized liquids. The casing is directly mounted on the motor flange. The casing is directly mounted on the motor flange.

4. Reverse Circulation Canned Motor Pump - Vertical

It is applicable to easily vaporized liquids, such as LPG.

5. High-temperature Insulation Canned Motor Pump

It is applicable to high-temperature liquids such as hot medium oil and hot water.

If the suction pipe is not filled with liquid, the pump will lift the liquid by automatic pumping. It is applicable to pumping liquids from underground containers.

6. Self-priming Type Canned Motor Pump

It is applicable to liquids with high melting point and easy crystallization. There is also internal (in-shaft) circulating type.

7. External Circulation type for Liquids with High Melting Point

8. Super Heat-resistant Type for High-temperature Liquids

Significantly improves the motor’s heat resistance, making it suitable for high-temperature liquids. The motor does not require cooling, which saves energy.

9. Slurry Type Canned Motor Pump

This canned motor pump is suitable for pumping liquids with low quantity of fine solids. It is equipped with mechanical seal that separates process liquid from the liquid inside the motor.
Flushing with clean liquid from the outside lubricates the bearings and cools the motor while it operates.

10. Slurry Type Gas Seal Canned Motor Pump

These pump types are designed with a gas chamber between pump and motor to keep the process liquid separate from motor, enabling trouble free pumping of slurries. And there is also an external injection type.

11. Multi- stage Type Canned Motor Pump

It is suitable for high head with multiple impellers.

12. Canned Motor Pump for Absorption Refrigerators

This canned motor pump for absorption type chillers is used as part of air conditioning systems in buildings, hospitals, and other structures. Compact, light weight, extremely low NPSHr.