Submersible Axial Flow Pump
Supply Range
The supply range includes all main units and accessory kits for the ZQB Submersible Axial Flow Pumps, ensuring the safe, effective, and reliable operation of the equipment. This encompasses, but is not limited to, the supply of submersible power cables (compliant with installation distances and requirements), complete guide rod lifting devices (including stainless steel lifting chains), cast iron drainage connection seats, and loop eyes for pump handles, etc.
In addition to the portable submersible sewage pump, each submersible centrifugal pump is automatic coupling type, comes with a leak protection and over-temperature controller, and the anti-seepage and over-temperature control modules are installed in the on-site button box provided by the electrical equipment supplier.
Jiangsu Du'an Environmental ProtectionZQBNo Chinese content provided for translation.Submersible axial flow pumps should be supplied complete with all accessories, fasteners, spare parts, protectors, and submersible cables necessary for safe, effective, and reliable operation.
Key Equipment Supply List:
ID | Name | Specs | Quantity | Installation Location |
1 | Submersible Axial Flow Pump | Q=230L/S；H=3.0m,N=15.0kW, | 3 | A2OBiochemical Pool Water Well |
II. Reference Standards
Equipment quality standards, testing procedures, and implementation specifications, etc., are in place.ISO、IECInternational Standards orAISI、ASTM、AWWAStandard orGB、SL、DL/TStandard Compliance: Bidders must obtain the owner's consent if they use other standards equivalent to the aforementioned ones.
III. Performance and Main Technical Parameters
Work Conditions:
Medium Conditions
Medium Temperature:0℃～30℃
Medium pH Level:PH：6-9
Environmental Conditions:
Ambient Temperature:3.2～36.4℃
Other
Each pump requires an accessory that is not less than10The lifting chain of the Miller (satisfying the usage requirements) should have a load capacity equivalent to the total weight of the pump.2Sewage pumps and sludge pumps must both be made from wear-resistant materials.
Other operating points of the pump should be within the pump's performance curve range.
Performance Requirements:
The basic design point for the pump's operation should be close to the rated point, installed within the pump sump, continuously.24Hourlong Long-Term20mDeep submersion operation, capable of intermittent operation, or normal start-up after long-term shutdown, with a minimum safe operating time of10000Hour.
Within the scope of design, the submersible pump should operate smoothly without vibration and cavitation, and the motor must be equipped with at least8%The power reserve.
At rated conditions, head, efficiency,NPSHValue deviations should be metISO2548OrISO9906Standard.
Submersible pumps can freely pass through diameters of at least100mmSolid particles, as well as long fiber materials.
Mechanical requirements:
Hydraulic Components
The motor and hydraulic components of the pump must be products manufactured and supplied by the same manufacturer. The pump should be a vertical coupled submersible pump. The submersible motor is directly coupled to the pump impeller, with the hydraulic components consisting of the pump casing, impeller, and wear-resistant ring.
The guide wire setting ensures the pump is smoothly guided from the pump well top to the outlet connection bracket, for disassembly and maintenance.Convenience is ensured as the pump automatically chains onto the connection device at the outlet elbow upon arrival. The coupling surface between the pump unit and the drainage connection should be sealed reliably, with the sealing process also completed during descent, eliminating the need for workers to enter the pump room.
The pump casing should be extremely sturdy and solid, securely fastened to the bottom plate of the pump well through the outlet support bend.
Propeller
The impeller design must meet the requirements for clog-free operation. In terms of hydraulic design, the impeller should integrate both forward thrust and centrifugal force. The impeller's flow line design should be gradient, and the impeller should be a self-cleaning, swept-back impeller with a diameter not less than φ.85mmThe solid particle capability ensures that the impeller will not clog during the conveying of conventional municipal sewage and sludge.
Impellers should undergo static and dynamic balance testing; the dynamic balance accuracy should not be less thanIS01940The translation is missing the actual Chinese content to translate. Please provide the Chinese text for translation.G6.3No Chinese content provided.
Motor
The motor of the pump should be a squirrel-cage induction motor. The insulation grade of the stator winding and stator connection should beFLevel155℃ The stator needs to be immersedFThree-level dielectric varnish. The stator is applied with a shrinkage method to be embedded in the stator chamber. The motor should be designed to be operable at pumping temperatures of40The medium's temperature does not exceed ℃.80Under ℃ conditions, the pump operates continuously. The pump's startup method is designed for full-load direct startup, and it should be capable of starting up on average every hour.12No Chinese content provided.
To monitor the temperature of each phase winding, a thermosensitive switch must be installed in the stator coil. The thermosensitive switch needs to be ≤70℃ Often closed.130The thermal switch needs to be connected to the motor overload protection and wired to the control cabinet. The junction box should include a terminal board. The terminal board should be elastic.OForm rings and motor sealing. The junction box should be permanently fixed and connected to cable conductors and stator input lines using a wire clamping rod. The pump and motor should be manufactured by the same manufacturer.
Integrated work factors(The combined effect of voltage, frequency, and specific gravity)At least for1.15The motor's allowable voltage fluctuation is ±10A performance chart should be provided that displays torque, current, power factor, input/output power, and efficiency. The chart also includes data on startup and no-load characteristics.
The motor should be capable of operating underwater.20The motor should have sufficient shaft power to ensure the pump does not overheat throughout its entire performance curve range.
The entire rotor component must undergo static and dynamic balance testing during manufacturing, with an accuracy not less thanIS01940G6.3The vibration intensity should meet the stringent requirements.ISOl0816-3，4RegionBNo Chinese content provided.
The motor should allow a voltage deviation range of ±10%Please provide a performance chart that displays torque, current, power factor, input/output power, and efficiency. The chart should also include data on startup and no-load characteristics.
Submersible motors should ensure continuous operation, intermittent operation, and the ability to resume operation after a long-term stop under conditions of exposure to the liquid surface.
The motor should be capable of operating underwater.20mMaintains its waterproof properties with continuous use.
The motor should have sufficient shaft power.， Ensure the pump throughout itsH-QThe machine operates without overload at any point within the performance curve.
Cooling System: The motor should be able to achieve sufficient cooling through the surrounding environment and the medium being pumped, without the need for an additional cooling system.
Bearings (using)NSKOr equivalent.
Adopt high-qualityLubricated Bearings: The design lifespan of bearings should exceed100,000hThe bearings we design must be capable of withstanding all axial and radial loads.Completely separate from the pumped water flow.
Mechanical Sealing(Axis Seal)
The upper sealing unit placed between the oil cavity and the motor room should be resistant to corrosion (with a medium pH range ofpH5～10Silicon carbide composition or sintered tungsten carbide composition.
The lower sealing unit, positioned between the pump casing and the oil cavity, should be made of corrosion-resistant material (with a pH range ofpH5～10Silicon carbide composition or sintered tungsten carbide composition.
The unit employs two high-quality mechanical seal systems, each consisting of an upper and lower independent seal. The lower seal is separated from the impeller hub and operates within an oil cavity. This cavity lubricates the overlapping seal surfaces at a constant flow rate, allowing the system to rotate clockwise or counterclockwise without adverse effects without compromising the sealing function. In the event of a seal failure and liquid entering the stator chamber, there is no contact with the lower bearing or stator.
Each pump should be equipped with a sealed system that is串联 by two independent sealing devices. The shaft sealing system of each pump should have an oil chamber, which should be designed to prevent overflow and provide space for oil expansion. The discharge pipe and inspection openings should have reliable oil leakage prevention seals and be mounted in easily accessible locations for maintenance.
Mechanical seals should be maintenance-free and not rely on rotational direction for sealing. The contact force of each sealing surface is achieved through its own spring system, ensuring even distribution. Lubrication is isolated from the conveyed fluid, should be able to withstand thermal shock, and possess excellent emergency operation characteristics.
Duwan Environmental ZQB Submerged Axial Flow PumpPrimary Materials
Cable: PNCT，10Mili Submarine Cable
Propeller: GGG50Cast iron or above grade
Pump Housing GG25Cast iron or above grades
Motor Housing: GG25Cast iron or above material
Axle Stainless SteelAISI420
Mechanical Seals: Silicon Carbide/Silicon Carbide or Tungsten Carbide/Tungsten Carbide
Bearings: AdoptedNSKOr equivalent
Fasteners: Stainless SteelAISI304
Submersible Pump Guide Rails Stainless SteelAISI304
Submersible Pump Chain Upgrade Stainless SteelAISI304
Jiangsu Du'an Environmental Protection Submersible Axial Flow Pump Discharge Diameter350、500、600、700、800、900、1000、1200、1400、1600A total of ten bore sizes, with basic models including350QZQB-70/350ZQB-125/500ZQB-70/600ZQB-70/700ZQB-70/800ZQB-70/~1600ZQB-125Traffic Range0.1～12m3/sReach Range2～14mPower range7.5～630kwVoltage Level380V、660V、3kV、6kV、10kV。
One-year warranty
On-site installation and debugging guidance
Install with soft start cabinet or variable frequency start cabinet
