Duwan Environmental QJB-10W Submersible Recirculation Pump with Through-the-Wall Pipe and Gate Valve
Internal Recirculation Pump Installation Diagram
Sludge Recirculation Pump Pricing
Excess Sludge Recirculation Pump Specifications
Motor Power: 10 kW
Material: 304 Stainless Steel
DN600 wall penetration pipe and butterfly valve
Duwan Environmental Protection Equipment (Jiangsu) Co., Ltd. Sludge Recirculation PumpMatching control boxSafety Operation:
I. Equipment Operation Section"Local and Automated versions."
1) Automatic Control. After checking the power supply and ensuring it's on, flip the selector switch on the control cabinet panel to the "Automatic" position. At this point, the submersible pump will be controlled by the central control room, requiring no on-site personnel to perform any operations.
2) On-site control.
a) Check the power supply to ensure it is powered on.
b) Turn the "Local/Stop/Automatic" selector switch on the control cabinet panel to the "Local" position.
c) Press the "Start" button to activate the equipment.
d) Press the "Stop" button to halt the equipment's operation.
e) Promptly repair any malfunctions and, after troubleshooting, reconnect power and reset the operation.
Secondly, it is strictly prohibited to operate sludge pumps dry. During operation, the shaft coupling should rotate evenly with no jamming or friction noises.
Three, strictly prohibit frequent startups of the sludge pump; the standby pump should be operated at least once a week.
Four, after each repair (especially re-wiring), make sure to confirm that the motor's direction of rotation matches the pump's specified direction before officially starting the engine.
Five, inspect for any abnormal noise or vibration in the mud pump during each shift.
Six, if an abnormal noise is heard from the mud pump in operation, the pump should be immediately stopped, the standby pump activated, and a repair report submitted simultaneously.
Duwan Environmental QJB-W10 Sludge Recycle Pump, Internal Recycle Pump Application
This pump is a treatment equipment for mixed liquid recycling and denitrification in two-stage sewage treatment plants. It can also be used in locations requiring low head and high flow, such as surface drainage, irrigation, and wastewater recycling processes.
Features
Compact structure, easy installation, simple operation, easy maintenance, noiseless, can be installed anywhere.
Application Scope
The submersible return pump can operate continuously under the following conditions.
Altitude not exceeding1000m；
Please provide the Chinese content to be translated.Medium-temperature medium, not exceeding40OC；
MediumpH 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 components such as impellers, submersible motors, flow guide covers, wall penetration pipes, butterfly valves, installation lifting rods, lifting cables, underwater cables, lifting frames, hand-cranked hoisting devices, angle turning mechanisms, and local control cabinets.
The submersible recirculation pump rotates smoothly with no sticking, stalling, or vibration.
Submersible return pump undergoes a sealed pressure test, with the test pressure being0.3 MPa, no leakage observed for 5 minutes.
Submersible recirculation pumps are equipped with a double mechanical seal structure and lip seal to form a dynamic sealing system, with the mechanical seal ensuring that the water leakage is minimized.Operates reliably for 25,000 hours without the need for replacement.
Submersible recirculating pumps can operate continuously under both full immersion and when the submersible motor is exposed to the liquid surface. They also ensure normal operation upon startup after gap running or long-term shutdown.
Submersible recirculation pump with extracted cableYZW type rubber sheathed flexible cables or cables with equivalent performance as specified in GB5013.2, standard configuration length per unit is 10 meters. The cable sealing head is treated with a special process to prevent cable jacket damage and water leakage into the motor.
The submersible return pump features a smooth and shiny surface, free from any signs of dirt, dents, cracks, or other damages.
The oil chamber of the submersible recirculation pump has ample space to accommodate expansion caused by temperature differences, and is equipped with a sealing leakage protection device.
Submersible recirculation pump cable with dual-color wire (yellow)/Green) designated as ground wire, with reliable connection. Ground marking is prominent and not easily worn off during use.
The impeller and rotor of the submersible recirculating pump are tested for dynamic balance, with a balancing accuracy ofG6.3；
The submersible recirculation pump features thermal protection switches in the stator winding and at the upper and lower bearing positions, as well as a sealing leakage protection device within the stator cavity.
The installation rod of the submersible recirculation pump ensures the equipment can rotate freely, rise and fall, and adjust various angles, making it unnecessary to empty the pool when lifting and installing the agitator.
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
Utilizing a swept-back anti-warping curve design, crafted from stainless steel and subjected to dynamic balancing tests and meticulous processing, it can achieve highPerformanceTransmits the motor's output power. To prevent clogging and slag accumulation 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 submersible recirculation pump are directly coupled, with the insulation level of its winding being...Grade FPlease provide the Chinese content to be translated.High operating temperature up to155OC, Motor availablePricedNo overload occurs under heavy loads; the motor can start up every hour.15 times, but the time intervals should be even. The motor stator is embedded in the housing using the hot sleeve method, without the need for any locating pins, ensuring firmness and reliability. 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 service life of the bearing in a diving recirculating pump is greater than100,000 hours
Axial Seal
The submersible recirculation pump consists of two mechanical seals and one lip seal. The outer seal chamber is equipped with a helix.
Grooves for removing impurities and reducing wear on the machine seal. Sealing device material: Tungsten carbide./Wolfram carbide.
Monitoring System
Three normally closed thermal switches are installed in the stator winding, with the thermal switches in series connection.140OC Action.
The motor stator cavity and oil chamber are equipped with a leak detector to monitor dynamic and static seal leaks and to timely disconnect power supply.
Du'an Environmental Protection Equipment (Jiangsu) Co., Ltd.After-Sales Service
After-sales service is crucial for the development of a company's business and establishing its reputation, and it is also a significant step for a company to move forward. For customers, it guarantees product quality and provides peace of mind.
1. We adhere to the principle of customer-first, ensuring all our products meet stringent corporate standards and national mechanical department specifications.
2. Provide spare parts, accessories, installation, debugging, maintenance services, and technical training for the relevant personnel of the customer in a timely manner according to their needs or agreements.
3. Large-scale engineering projects will be organized for production, testing, and inspection in accordance with the bid documents' requirements, and we will cooperate with the customer for on-site acceptance.
4. Strictly organize the procurement of raw materials and components, as well as the production and inspection of products, in accordance with ISO 9001 standards.
