Technical parameters of md280-43×3 multistage centrifugal pump
Rated flow (m3/h): 280
Rated head (m): 129
Rated efficiency (%): 77
Shaft power (kw): 127.83
Cavitation (m): 4.7
Maximum outer diameter of impeller: 365(mm)
Speed (rpm): 1480
Impeller series: 3
Impeller material: ZG230-450, QT500-7
Pump body material: ZG230-450, QT500-7
Guide vane material: QT500-7
Passing particles: <0.5mm
Medium temperature: ≤80℃
Motor power (kw): 160
Motor model: Y315L1-4
Structure type: single pump base
Impeller steering: clockwise
Inlet and outlet caliber size: DN
Import diameter: 200
Export caliber: 200
Weight (kg): 787
MD multi-stage centrifugal pump is a multi-stage pump specially used in coal mines and underground mines. It can be used in factories, mine drainage, urban sewage treatment plants and other fields. The medium that can be transported contains solid particles not greater than 1.5% and similar sewage , The temperature of the conveyed medium cannot exceed 80°C.
md280-43×3 multi-stage centrifugal pump performance curve
Md280-43×3 multi-stage centrifugal pump installation drawing
Md280-43×3 multi-stage centrifugal pump structure diagram
Md multi-stage centrifugal pump is a horizontal, single-suction, multi-stage segmented centrifugal pump. The inlet of the pump is horizontal and the outlet is vertical. The suction section, the middle section and the water outlet section of the pump are connected into a whole with a tension bolt.
md multi-stage centrifugal pump rotor components are mainly composed of impellers, balance discs and other parts mounted on the shaft. Both ends of the rotor are supported by single-row radial rolling bearings lubricated with butter. The rotor axial force is balanced by the balance plate.
Sealing of the pump: The static joint surface between the inlet section, the middle section and the outlet section is sealed with molybdenum disulfide, and it is also sealed with a paper gasket. It must be sealed with raw materials when reinstalling after disassembly. In order to prevent water from entering the bearings at both ends, the use of " O" type rubber ring and water retaining ring seal. The rotating part and the fixed part of the pump are sealed by a sealing ring, guide vane sleeve and packing. A certain pressure of water is passed into the filling cavity, which plays a role of water sealing and cooling.
The transmission of the pump is directly driven by the motor through the coupling. Looking at the pump from the direction of the motor, the pump rotates in a clockwise direction.
