Introduction to Deep Well Fire Pump

The deep well fire pump set manufactured by Nanjing Huanya Pump Co., Ltd. is a fire pump set introduced and developed in accordance with the new Chinese fire pump standard GB6245-2006 "Fire Pump Performance Requirements and Test Methods" and the American Fire Protection Association standard NFPA20. The product has undergone type testing by the China Fire Equipment Quality Supervision and Testing Center, and all performance indicators have met the standard requirements, obtaining the Fire Product Certification.

The deep well fire pump set consists of multiple centrifugal impellers and guide shells, lifting pipes, transmission shafts, pump seats, electric motors, and other components. The pump seat and motor are located above the water tank, and the power of the motor is transmitted to the impeller shaft through a transmission shaft concentric with the lifting pipe, thereby generating flow and pressure.

Scope of application

Deep well fire pumps are mainly used in fixed fire systems such as fire hydrants and automatic sprinkler systems in industrial and mining enterprises, engineering construction, high-rise buildings, etc. They can be used to transport clean water and media with chemical properties similar to water that do not contain solid particles. They can also be used in shared water supply systems for daily life, production, buildings, municipal water supply and drainage, etc.

Internal structure of deep well fire pump

1. Motor: Hollow shaft motor for deep well pumps (YLB type), or solid shaft ordinary vertical motor;

2. Adjust the nut: Adjust the axial displacement of the impeller;

3. Pump seat: capable of withstanding heavy loads and facilitating the installation of packing boxes;

4. Pre lubrication plug: Before starting, inject clean water through this area to lubricate the internal bearings of the water pump;

6. Upper short pipe (short pipe B): connected by flange, the upper flange of the short pipe is connected to the pump seat, and the lower flange is connected to the flange of the lifting pipe;

9. Wheel shaft: 2Cr13 stainless steel or 45 # high-quality carbon steel (surface chrome plated);

10. Middle shell: Smooth flow channel reduces frictional resistance and improves efficiency. Materials: HT200, QT450, 2Cr13, 304, 316, etc;

11. Impeller: Designed in conjunction with the middle shell, it is efficient, has a wide operating range, and undergoes precise balancing to ensure smooth operation. Material: HT200, silicon brass QT450、2Cr13、 304, 316, etc;

12. Medium shell bearings: copper bearings, wear-resistant rubber bearings, or imported polymer bearings. Reliable work and long lifespan.

13. Cone sleeve: securely fix the impeller onto the impeller shaft.

15. Lower shell bearing: Copper bearing, grease filled, long-term trouble free operation.

16. Lower shell: Guide the liquid in the water filter evenly towards the impeller with minimal loss. Materials: HT200, QT450, 2Cr13, 304, 316, etc;

17. Water filter screen: The length of the water filter screen should be appropriate to achieve good condition and prevent large particles from entering the water pump;

18. Transmission shaft: High strength carbon steel, chrome plated on the surface of the bearing position. Stainless steel material can be provided as needed;

22. Water lifting pipe: Water lifting pipes can be installed using threaded connections or flange connections.

Model Description