Nitration Liquid Recirculation Pump QJB-W2.5
Wall Penetrating Pump QJBW-5.5W
Submersion Wall Penetration Pump Installation Diagram
Through-the-Wall Pump Installation Diagram
Material: 304 Stainless Steel
Motor Power: 2.5 kW
Motor Power: 5.5 kW
Pass-through wall pipe, door closer and installation system
Diving Return Pump
Equipment Name: Submersible Recirculation Pump
2. Equipment Model: QJB-W2.5
3. Key Technical Parameters
Model Number Technical Specifications | QJB-W2.5 |
Trafficm3/h | 416 |
Lift h | 0.9 |
Power Rating kw | 2.5 |
Impeller diameter mm | 400 |
Impeller Speedr/min | 740 |
Water Push Power N | 800 |
Motor Protection Class | IP68 |
Motor Insulation Grade | F |
Wall Penetration Pipe to Pool Top Distancem | 5.6 |
Electricity Source | 380V , 3ph , 50Hz |
Numbers Quantity Set | 3 |
Application
This pump is a treatment equipment for mixed liquid recirculation and denitrification in two-stage wastewater treatment plants. It can also be used in applications requiring low head and high flow, such as surface drainage, irrigation, and wastewater recycling processes.
Features
Compact structure, easy installation, simple operation, easy maintenance, noise-free, can be installed anywhere.
Application Scope
Submersible recirculation pumps can operate continuously under the following conditions:
Altitude not exceeding1000m；
Please provide the Chinese content that needs to be translated into American English.Medium temperature not exceeding40OC；
MediumpH range between 5-9.
Liquid density does not exceed1150kg/m3；
Long-term dive operations, dive depths generally do not exceed20m；
Structure and Working Principle
Submersible recirculation pumps consist of a impeller, submersible motor, flow guide hood, wall penetration pipe, flap valve, installation lifting rod, lifting cable, underwater cable, lifting frame, hand-cranked hoisting device, angle steering device, and on-site control cabinet.
The submersible recirculation pump rotates smoothly without any jamming, stalling, or vibration.
Submersible recirculating pump undergoes a sealed pressure test, with the test pressure being0.3 MPa, no leakage observed for 5 minutes.
Diving return pump features a double mechanical seal structure and lip seal to form a dynamic sealing system, with mechanical seals ensuring...Operates reliably for 25,000 hours without the need for replacement.
The submersible return pump can continuously operate under both full immersion and when the submersible motor is exposed to the liquid surface, while ensuring that it can still run normally upon startup after intermittent operation or long-term shutdown.
Submersible recirculation pump cable extractionYZW type rubber sheathed flexible cables or other cables with equivalent performance, as specified in GB5013.2, come with a standard configuration length of 10 meters. The cable sealing heads are treated with a special process to prevent the cable jacket from being damaged and water from渗入 motor.
The diving return pump features a smooth, unblemished surface with no signs of scratches, dents, or cracks.
The oil chamber of the submersible recirculation pump has ample space to accommodate expansion due to temperature differences, and is equipped with a seal leakage protection device.
Submersible return pump cable with dual-color wire (yellow)/Green) specified as ground wire, with reliable connection. Grounding mark is prominent and not easily worn off during use.
Submersible recirculation pump impellers and rotors are tested for dynamic balance, with a balancing accuracy ofG6.3；
The submersible recirculation pump is equipped with thermal protection switches within the stator winding and at the upper and lower bearing positions, and a sealing leakage protection device is installed inside the stator cavity.
The installation rod of the submersible recirculation pump ensures free rotation, lifting, and adjustment of various angles for the equipment, making it unnecessary to empty the pool for the lifting and installation of the mixer.
Service Life
Submersible recirculation pumps operate under specified conditions,InitialAverage runtime prior to the last failure was not less than10,000 hours
Service life of the complete unit is not less than20 years.
Structural Design
Blade wheel
Employed with a swept-back anti-torsion curve design, crafted from stainless steel material, and subjected to dynamic balance testing and meticulous processing, it can achieve highPerformanceTransmits the motor's output power. To prevent clogging and slag buildup in the impeller, and to avoid loosening between the impeller and the shaft during operation, an internal locking device is used in the impeller's fixed structure.
Motor
The motor and impeller of the diving recirculation pump are directly coupled, with the insulation grade of its winding beingF GradePlease provide the Chinese content to be translated into American English.Large working temperature range155OC, Motor inPlease provide the Chinese content to be translated.No overload will occur under heavy loads; the motor can start up every hour.15 times, but the intervals should be evenly spaced. The motor stator is inserted into the housing using the heat shrink method, without the need for any locating pins, ensuring a firm and reliable fit. Under normal conditions, the motor's temperature rise does not exceed 80OC。
Bearings
The motor rotor is supported by a double-row angular contact ball bearing and a cylindrical roller bearing.
The operational lifespan of the diving recirculation pump bearings is greater than100,000 hours
Axial Seal
The submersible recirculating pump consists of two mechanical seals and one lip seal. The outer seal cavity is equipped with a helix.
Grooves for removing impurities and reducing machine seal wear. Seal device material: Tungsten Carbide/Wolfram carbide.
Monitoring System
Three normally closed thermal switches are installed in the stator winding, with the thermal switches connected in series.140OC Action.
The motor stator cavity and oil chamber are equipped with leak detectors to monitor dynamic and static seal leaks, and to timely disconnect the power supply.
10、Du'an Environmental Protection Equipment (Jiangsu) Co., Ltd.After-Sales Service
After-sales service is crucial for the development of our business and for establishing our company's reputation, as well as a significant step for a company's advancement. It ensures the quality of our products for the users and provides a guarantee of peace of mind.
1. Upholding the customer-first principle, all products produced by our company meet stringent corporate and national machinery department standards.
2. Provide spare parts, accessories, and installation, debugging, and maintenance services promptly according to customer requirements or agreements, as well as technical training for relevant personnel of the customer.
3. Production, testing, and inspection will be organized in accordance with the bid document requirements, and we will cooperate with the client for on-site acceptance.
4. Strictly organize the procurement of raw materials and components and the production, inspection of products in accordance with ISO 9001 standards.
