Duwan WDS50-125 Single Stage Horizontal Centrifugal Pump, includes installation and debugging

WDSThe single-stage horizontal end-suction pump features a rear-opening structural design. The shaft end seal requires a packaged mechanical seal. The primary seal (dynamic and static rings) should be made of high-strength, high-wear-resistant materials. The material, structure, and cooling flushing scheme of the mechanical seal should be reasonable and reliable.

Bearings are standard-type roller bearings, utilizingNSKOrSKFBrandBasic Rated Life of Roller BearingsNot less than normal usage timeOperate continuously under rated conditions for at least25000 HourFewerRated speed under at least large radial and axial loads16000 Hour(s)

Pump and drive motor transmission connections should be made using a coupling for direct connection, couplingHarvestUtilize couplings with extended membrane sections. The pump shaft should possess sufficient strength and rigidity to transmit the rated power of the prime mover; the roughness of the shaft and sleeve surfaces at the mechanical seal should not exceed0.8mPumps shall operate within their permissible working range with the shaft deflection not exceeding50m。

A replaceable and sturdy, non-rotating wear-resistant ring should be between the impeller and the pump housing to maintain the pump's performance.HighEfficient operation.PumpMechanical seals are used; the leakage of the mechanical seal should not exceed5mL/h。

WDSSingle-stage horizontal centrifugalPump body and cover, including the shaft seal box and sealing end cover, shall not exceed the nominal pressure of the pump flange. The pump body, including the shaft seal box and sealing end cover, is sufficiently thick-walled to ensure its integrity.NormalOperating TemperatureOperation.

Pressure gauge connections should be provided at both the inlet and outlet of the pump housing. A vent valve connection should be left at a higher position on the water pump outlet. Drain connections should be set at the lower part or several low points of the pump, and sealed with plugs.

The impeller is made of a single casting, ensuring a structurally efficient pumping of the flushing water. ImpellerAvailableA reliable fixation to prevent circumferential and axial movement during rotation in the specified direction.

A replaceable and firmly locked, non-rotating wear-resistant ring is installed between the impeller and pump housing to maintain the pump's operation.HighEfficiency in operation.WDSHorizontal CentrifugalThe shaft of the pump has sufficient strength and rigidity to transmit the rated power of the prime mover; the roughness of the shaft and sleeve surfaces at the mechanical seal should not exceed0.8m.Pumps operate within their allowable working range with shaft deflection.GenerallyNo more than50m。

If equipped with a sleeve, it should be securely fastened to prevent the sleeve from moving along the circumference and in the axial direction. The sleeve should be tightly adjacent to the impeller hub to maintain a seal and prevent the shaft from getting wet. Additionally, it should ensure that the leakage between the shaft and the sleeve does not get confused with the leakage passing through the mechanical seal face.

To prevent loss and contamination, the design of the bearing housing must not use gaskets and threaded joints to isolate the lubricant from the cooling fluid. All openings in the bearing housing should be designed to prevent the entry of debris and leakage under normal operating conditions.

WDSHorizontal CentrifugalThe pump is connected to the drive shaft with an elastic coupling, which should be large enough to accommodate the higher torque requirements of the predetermined driving motor. The maximum speed of the coupling must match all possible operating speeds of the predetermined pump driving motor. A protective cover should be installed on the coupling.

The base should be a common base for both the pump and motor, with a design that allows for vertical adjustment of the drive motor to compensate for the tolerances between the pump drive motor and the base.

At any operating point on the pump characteristic curve, the rated output shaft power of the motor should be at least greater than the pump shaft power by15%The motor must be designed for continuous operation and must meet at least an hourly requirement of...10No startup requirements that would cause any harmful effects. The motor is equipped with overheat and overcurrent protection devices.

WDSSingle-stage centrifugal pipeMain Pump Materials：

Pump housing:Cast IronOr equivalent

Impeller:Cast IronOr equivalent

Spindle:Cast IronOr equivalent

Abrasion-resistant lining:Cast IronOr equivalent

Axial Seal: Mechanical Seal

Duwan Environmental WDSHorizontal CentrifugePump comes with factory packagingInformation：

Equipment Origin, Country of Origin, and Full Name of Manufacturer

Form, model, specifications,外形 dimensions, technical performance, and relevant parameters of the equipment

Basic bolt layout drawing and civil load

Overall layout drawing of the pump assembly

Pump Structure Assembly Drawing

Detailed technical specifications

Part Material and Protective Coating Description

Dimensions and space requirements for the equipment's appearance, installation, and maintenance operations.

Electrical schematic and terminal wiring diagramØ Control Schematic

Instruction Manual or Equipment List

Centrifugal Pump Technical Data Sheet

Supplier List (including name, quantity, specifications, performance parameters, material, origin)

Installation, operation, and maintenance manuals for the equipment (provided after contract signing)