Product DescriptionSHD, SHDG single-suction multistage segmental
type centrifugal pump for conveying water or physical and chemical
properties similar to water without solid particles. SHD pumps
transmission fluid with temperature below 80 ºC, suitable for
mines, factories and urban drainage. SHDG pumps transmission fluid
with temperature below 105 ºC, which is suitable for boiler feed
pump or delivery of hot water and other similar
occasions.Structural features SHD, SHDG type pumps made from
stator, rotor, bearings and shaft seal. 1, Stator part: mainly by
inhalation, middle, spit section, guide vanes, etc., clamping
segments with tension bolts to be running part. SHD-type pump with
horizontal inlet and vertical outlet, SHDG type pump
with both vertical inlet and outlet. 2, Rotor parts: the main by
the shaft, impeller, balance plate and bushings and other
components. The shaft transfer power to the impeller to make it
work; axial force is balanced by balance plate; both ends of the
shaft equipped with replaceable shaft sleeve for protection.
3,Bearing part: 2 type of bearings: rolling bearings and sliding
bearings: Sliding bearing mainly by bearing body, bearing caps,
bearing, dust disk, oil level gauge, rejection mooring rings and
other components, lubrication of thick oil; Rolling bearing main
body, bearings and gland, using grease lubrication. 4, Shaft seal
parts: mechanical seal or packing seal, mainly by water segment and
sealed body filler, retaining ring components at tail cover letter.
Seal chamber liquid with function of the water seal, water-cooled
and water lubrication. SHD pump seal water from pressure water
inside pump. SHDG seal water from cooling water, normal temperature
water outside pump.The pressure of seal water should be higher than
seal chamber 0.05-0.1MPa, the pressure of cooling water to be
0.15-0.3MPa. In addition, the pump is directly driven by a prime
motor through flexible coupling. The pump is clockwise rotation,
seem from the prime motor end. SHD, SHDG single-suction
multistage segmental type centrifugal booster pump can be driven by
electric motor or diesel engine. Detailed PhotosIn multistage
centrifugal pumps, because of the high thrust that is generated due
to the impellers facing in the same direction, there will be a
thrust balance device i.e balance disc or balance drum which
reduces the thrust to a level which can be managed by a standard
sized thrust bearing. Impeller material can be cast iron, cast
steel, stainless steel and bronze.Flexible couplingsUnlike rigid
couplings, flexible couplings can accommodate some movement e.g.
vibrations and thermal expansion without damage. This makes them
ideal for applications where there is a degree of unavoidable
misalignment between the drive and pump shafts. As they can absorb
vibrations well, they can also be used to reduce excessive
operating noise. With these benefits come a more complex, expensive
design. However, as flexible couplings protect the shaft and
bearings from damage and premature wear, there are maintenance
savings to be had in the long run.We use wear-resisting
disc coupling or pin coupling. Packing seals have
been the most widely used sealing solution for many years. Packing
seals use rope-like materials that wrap around the shaft of a pump,
filling in dead space and minimizing fluid loss. Over time,
however, fluid loss will increase as the gland packing material
begins to wear down and may impair regular lubrication or reduce
ease-of-replacement that is required to function
properly.Mechanical seals are preferred over traditional packing
seals in diverse applications during which leakage problems should
be avoided. Mechanical seals are more durable than their
predecessors and are designed to take much more punishment. Basic
mechanical seals use multiple sealing points to nearly eliminate
any leakage issues. Product ParametersFlow rate6-1000m3/hrHead
rate25-650mSpeed1450-2900rpmMedium temperature0-105 ºCDiameter
40-350mmProduct Application Pressure boosting systems
commonly employ these pumps. These circumstances usually
demand a constant flow and pressure. Some of the most common
projects that will use a horizontal multistage pump are:Mine
dewateringHigh density livingSnow makingBoiler feed systemsReverse
OsmosisIndustrial applicationsCondensateHigh pressure cleaning/wash
down facilitiesJacking pumps for fire hydrant systemsIrrigation and
fire hose feel supplyShowersCo generationSprayPressure
Boosting Facilities & Equipments FAQA. What are the
multi stage pump parts?The multistage pump parts are very similar
to those of the standard Centrifugal pump except for the Multistage
Centrifugal pump where the additional parts are diffusers which
efficiently channel the fluid into the eye of the impeller or to
the following stage. In the side channel pump, there are
intermediate plates with the scalloped side channel and liquid
parts.In multistage centrifugal pumps, because of the high thrust
that is generated
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