Dry rotor circulation pump

Dry rotor circulation pump — is a type of pump used in heating, water supply and air conditioning systems in which the rotor and bearings are located outside the flow of circulating fluid and are cooled separately.

Dry Rotor Circulation Pump: Key Aspects

1. Design:
   • Dry rotor: In this pump, the rotor and bearings are located in a separate chamber that is not in contact with the liquid, which requires an additional device for cooling and lubrication.
   • Isolated system: The pump has a hermetic seal that prevents liquid leakage and protects the electric motor from contact with the coolant.
2. Principle of operation:
   • Circulation: The pump rotor rotates in the housing, creating pressure and moving the fluid through the system. Since the rotor is not in the fluid, a cooling system is used to maintain the temperature and prevent overheating.
   • Heat dissipation: Heat from the motor and bearings is removed through a cooling system, often using a fan or other device.
3. Advantages:
   • High efficiency: Typically, such pumps have high efficiency and can operate with high capacity under high pressure.
   • Durability: Less fluid exposure on the rotor and bearings increases equipment life.
   • Wide range of applications: Can be used in high temperature and pressure systems where reliable operation is required.
4. Application:
   • Heating and water supply: Widely used in heating, water supply, air conditioning and industrial processes.
   • Large systems: Ideal for large systems with high circulation and large liquid volumes.
5. Installation and maintenance:
   • Difficulty of installation: May require more complex installation and setup due to the need to connect the cooling system.
   • Service: Requires regular cooling system maintenance and leak testing to prevent leaks and overheating.
6. Flaws:
   • Noise: A dry rotor circulator pump can be noisier than wet rotor pumps due to fans and other cooling mechanisms.
   • Energy intensity: Often consume more energy to provide cooling and maintain efficient operation.

Circulation pump The dry rotor type is a reliable choice for systems requiring high pressure and high performance, especially in industrial and large installations. Its design allows it to operate at high temperatures and pressures, ensuring efficient and durable operation.