Performance curve of internal reflux pump

Performance curve of internal reflux pump

Product Introduction of Internal Reflux Pump:

The Du'an Environmental Protection QJB-W Internal Reflux Pump is a new product developed based on the production technology of submersible mixers. This pump is a professional equipment for mixed liquid reflux, denitrification and denitrification in secondary sewage treatment plants. It can also be used for pumping purified water during surface drainage, irrigation and controlling waterway systems. In the process of wastewater treatment, micro head and high flow areas are required in the recirculation or mud suction circuit.

2、 Introduction to the structure of submersible reflux pump:

a: Three phase motor, 380V three-phase 50HZ, protection level IP68, stator insulation level F, direct start.

b: Bearings - Long term lubricated bearings, NSK or SKF brand, with a service life of over 40000Hour. c: Impeller——The submersible reflux pump is equipped with a cutting-edge axial running three bladed impeller, which has excellent self-cleaning and vibration free functions. The design of the impeller can simultaneously meet the requirements of high flow rate and low head, and form a large flow rate in the axial direction.

d: Sealing - The internal reflux pump adopts Swedish Feili submersible motor sealing technology to ensure safe and reliable sealing.

e: Sealed monitoring - When water enters the oil chamber, the humidity sensor in the probe leakage system will automatically issue an alarm signal to detect it in a timely manner and prevent a second malfunction.

f: Temperature monitoring - The motor winding of the submersible reflux pump adopts a safe overheating protection process. Once overheating occurs due to motor overload, high medium temperature, or other reasons, the temperature sensor will promptly issue an alarm signal or automatically shut down the water pump before the temperature exceeds the minimum allowable temperature.

g: Automatic coupling system - The submersible reflux pump is equipped with a single guide rail automatic coupling system to ensure quick installation, lifting, and maintenance.

3、 The three major characteristics of QJB-W internal reflux pump:

1： Micro head, high flow rate; 2： No blockage, high utilization rate; 3： All stainless steel structure, strong corrosion resistance;

4、 Product Description:

Power consumption: 1.5-22KW Impeller diameter: 400-640mm Insulation grade: F Material: Cast all stainless steel/ordinary cast iron (can be customized according to customer requirements)

Supply scope of Jiangsu Du'an Environmental Protection Internal Reflux Pump:

The Jiangsu Du'an Environmental Protection Internal Reflux Pump is a complete set of equipment and needs to be equipped with necessary accessories for safe operation, such as a local control box, stainless steel double guide rods, stainless steel lifting chains, cantilevers, lifting hoists, through wall pipes, swing doors, and cables from the control box to the equipment.

Performance curve of internal reflux pumpSupply scope (including but not less than the following)

(1) Fully assembled internal reflux pump

(2) Monitoring unit

(3) Complete lifting device

(4) Each pump needs to provide at least 10m underwater cable

(5) All connecting accessories, embedded parts, anchor bolts, etc;

(6) Three year spare parts