Reliable High Efficiency Electric Pump for Boiler Feed and Mining

Product Details
Customization: Available
After-sales Service: Online After-Sale Service
Warranty: 12 Months
Diamond Member Since 2023

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Registered Capital
50000000 RMB
Plant Area
>2000 square meters
  • Reliable High Efficiency Electric Pump for Boiler Feed and Mining
  • Reliable High Efficiency Electric Pump for Boiler Feed and Mining
  • Reliable High Efficiency Electric Pump for Boiler Feed and Mining
  • Reliable High Efficiency Electric Pump for Boiler Feed and Mining
  • Reliable High Efficiency Electric Pump for Boiler Feed and Mining
  • Reliable High Efficiency Electric Pump for Boiler Feed and Mining
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  • Overview
  • Product Description
  • Detailed Photos
  • Product Parameters
  • Product Application
  • Facilities & Equipments
  • FAQ
Overview

Basic Info.

Model NO.
SHDG85-45/8
Max.Head
>150m
Max.Capacity
>400 L/min
Driving Type
Motor
Impeller Number
Multistage Pump
Working Pressure
High Pressure Pump
Influent Type of Impeller
Single Suction Pump
Position of Pump Shaft
Horizontal Pump
Pump Casing Combined
Verticaljoint Surface Pump
Mounting Height
Suction Centrifugal
Impeller
Closed
Usage
Pump, Pumps, Condensate Pump, Circulating Pump
Material
Cast Iron, Cast Steel, Stainless Steel, Bronze
Seal Type
Mechanical Sea or Packing Gland Seal
Coupling
Flexible Pins/Disc
Driver
Electric Motor/Diesel Engine
Transport Package
Plywood Case
Specification
2200*900*1500mm
Trademark
SEMHAI or OEM
Origin
China
HS Code
8413709990
Production Capacity
1000000sets/Year

Product Description

Reliable High Efficiency Electric Pump for Boiler Feed and Mining

Product Description

The SHD and SHDG series represent the pinnacle of efficiency and reliability in single-suction multistage segmental centrifugal pumps. Designed to convey water and fluids with properties akin to water, devoid of solid particles, these pumps are engineered for excellence. The SHD model effortlessly handles fluid temperatures up to 80 ºC, making it an ideal choice for mines, factories, and urban drainage systems. Meanwhile, the SHDG model is crafted to manage fluid temperatures as high as 105 ºC, perfectly suited for boiler feed operations and the delivery of hot water in various demanding scenarios.

Reliable High Efficiency Electric Pump for Boiler Feed and Mining
Reliable High Efficiency Electric Pump for Boiler Feed and Mining

Structural Features
The SHD and SHDG pump series are meticulously constructed from key components: the stator, rotor, bearings, and shaft seal, each contributing to the system's unparalleled performance and durability.
1. Stator Part: Comprising essential elements such as the inhalation, middle, and discharge sections, as well as guide vanes, the stator is the heart of the pump, secured by tension bolts. The SHD pump features a horizontal inlet and vertical outlet, while the SHDG pump boasts both vertical inlet and outlet configurations, ensuring versatility in application.
2. Rotor Parts: The dynamic components include the shaft, impeller, balance plate, and bushings, all working in harmony. The shaft transfers power to the impeller, driving its operation. Axial forces are expertly balanced by the balance plate, and both ends of the shaft are fitted with replaceable sleeves for added protection and longevity.
3. Bearing Part: Featuring dual bearing types - rolling and sliding bearings:
Sliding Bearings: Composed of the bearing body, caps, dust disk, oil level gauge, and rejection mooring rings, these bearings utilize thick oil for lubrication. Rolling Bearings: Consisting of the main body, bearings, and gland, they employ grease lubrication for smooth operation.
4. Shaft Seal Parts: The mechanical or packing seals are integral, with water segments and filler components ensuring a secure seal. The chamber liquid functions as both seal and coolant. The SHD pump utilizes internal pressure water for sealing, while the SHDG pump relies on external cooling and normal temperature water. Seal water pressure must exceed the seal chamber by 0.05-0.1MPa, with cooling water pressure ranging from 0.15-0.3MPa, thus guaranteeing optimal performance.
Reliable High Efficiency Electric Pump for Boiler Feed and Mining
Reliable High Efficiency Electric Pump for Boiler Feed and Mining
Reliable High Efficiency Electric Pump for Boiler Feed and Mining

This highly efficient pump is directly powered by a prime motor via a flexible coupling, ensuring smooth, reliable operation. The system rotates clockwise when viewed from the motor end, highlighting its precision engineering.
Reliable High Efficiency Electric Pump for Boiler Feed and Mining
Reliable High Efficiency Electric Pump for Boiler Feed and Mining

The SHD and SHDG pumps can be driven by either an electric motor or diesel engine, offering adaptable power solutions for diverse operational environments.

Detailed Photos

Reliable High Efficiency Electric Pump for Boiler Feed and Mining
In the realm of multistage centrifugal pumps, where significant thrust is generated due to impellers aligned in a singular direction, the innovative inclusion of a thrust balance device—such as a balance disc or balance drum—is key. This ingenious component effectively reduces the thrust to levels that can be effortlessly managed by a standard-sized thrust bearing, ensuring optimal performance and longevity.
Our impellers are crafted from a choice of premium materials, including cast iron, cast steel, stainless steel, and bronze, offering robustness and durability tailored to meet diverse needs and applications.
Flexible couplings
Unlike their rigid counterparts, flexible couplings offer the remarkable ability to accommodate movements like vibrations and thermal expansion without damage. This adaptability makes them indispensable for scenarios where some degree of misalignment between the drive and pump shafts is unavoidable. Their excellent vibration absorption also contributes to a notable reduction in operational noise. While these couplings boast a more intricate and costly design, they ultimately deliver significant maintenance savings by safeguarding shafts and bearings against damage and premature wear.
Our selection includes wear-resisting disc couplings or pin couplings, ensuring resilience and reliability.
Reliable High Efficiency Electric Pump for Boiler Feed and Mining
Reliable High Efficiency Electric Pump for Boiler Feed and Mining
Packing seals have long been a trusted sealing solution. These seals employ rope-like materials that envelop the pump shaft, effectively filling dead spaces to minimize fluid loss. However, as time progresses, wear on the gland packing material can lead to increased fluid loss, potentially affecting lubrication and replacement ease, crucial for sustained optimal function.

Mechanical seals are the preferred choice over traditional packing seals in numerous applications where leakage must be avoided. These seals are engineered for durability, surpassing their predecessors, and are adept at handling rigorous conditions. Featuring multiple sealing points, basic mechanical seals significantly mitigate leakage issues, providing reliability and peace of mind.

Product Parameters

Flow rate 6-1000m3/hr
Head rate 25-650m
Speed 1450-2900rpm
Medium temperature 0-105 ºC
Diameter 40-350mm
Reliable High Efficiency Electric Pump for Boiler Feed and Mining

Product Application


Reliable High Efficiency Electric Pump for Boiler Feed and Mining
Pressure boosting systems are the heartbeat of numerous industries, often utilizing pumps like ours to deliver unwavering flow and pressure. The versatility of our horizontal multistage pump makes it an essential component in various significant projects, including:
Mine dewatering, ensuring safety and efficiency in challenging environments.
High density living, providing reliable water supply in urban residential areas.
Snow making, creating winter wonderlands regardless of natural conditions.
Boiler feed systems, enhancing industrial boiler operations with precision.
Reverse Osmosis, offering clean and pure water through advanced filtration.
Industrial applications, driving productivity across various sectors.
Condensate, managing fluid recovery and energy conservation efficiently.
High pressure cleaning/wash down facilities, ensuring thorough cleanliness and sanitation.
Jacking pumps for fire hydrant systems, safeguarding infrastructure with reliable fire protection.
Irrigation and fire hose feel supply, supporting agricultural needs and emergency responses.
Showers, delivering consistent water pressure for everyday comfort.
Co generation, optimizing energy efficiency and sustainability in power systems.
Spray applications, enabling precise distribution in various settings.
Pressure Boosting, enhancing fluid dynamics across diverse applications.

Facilities & Equipments

Reliable High Efficiency Electric Pump for Boiler Feed and Mining
Reliable High Efficiency Electric Pump for Boiler Feed and Mining

FAQ

A. 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 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.

B. How does a multi stage pump work?
A multistage pump operates by one impeller feeding into the next impeller and the number of impellers required depend on the discharge pressure requirement. Liquid enters the pump and then passes through the various number of impellers in a sequence from the left to right.

C. What are the applications and uses for multi stage pumps?
The applications for multi stage pumps are many and varied and can be used for delivering water to high rise buildings, reverse osmosis (RO), boiler feed water, spraying, high pressure cleaning, water works, heating, condensate, fuel delivery, oil and gas production, power generation & mining and other high pressure and temperature applications..

D. What are the different types of multi stage pumps?
Types of multistage pumps include;
Horizontal Multistage Centrifugal pump (above ground)
Vertical Multistage Centrifugal pump (above ground)
Submersible/Sump pump types
Side Channel pump
Combination pumps i.e Centrifugal low NPSH first stage with side channel additional stage.
Horizontal split case pump
Vertical Turbine pump
Sanitary Multistage pump

E. What are the advantages of using a multi stage pump?
If we were to compare the Centrifugal multi stage pump to a high pressure duty pump - the Centrifugal multi stage pump even though it is more complex and costly, it would probably be a better hydraulic fit, have a better efficiency and be more reliable. With its hydraulic modules, the ability to supply additional impellers and its ability to trim those impellers, the duty point can me met exactly without compromise. The selection is more likely to be close to 'BEP' and will run efficiently and reliably.
Multi stage pumps can be configured to have an interstage bleed off if there are multiple duty points required. It may be possible to run a multistage pump at a lower speed than a single stage centrifugal pump which may offer an efficiency advantage but it will certainly run much quieter which is an important consideration in today's world. A 3 dBA increase represents a doubling of sound as the sound scale is logarithmic.

F. What is difference between a single stage and a multi stage pump?
A single stage pump uses one impeller whereas a multi stage pump uses 2 or more impellers (some manufacturers use 80 or more impellers).
There are additional components in a multi stage pump which are required for channelling the fluid from the first stage to the following stage i.e diffusers.
Multi stage pumps have a thrust balance device and there may also be intermediate bearings (lubricated by the pumpage) to steady the shaft plus other minor differences.

G. How do you read a multistage pump curve?
You read a multi stage pump curve in exactly the same way as you read any other pump type curve however some manufacturers will publish single stage curves which means that this has to be multiplied out to establish the number of stages required, however be aware that the side channel pumps have their maximum power at zero flow and the power decreases with increasing flow which is the reverse of a centrifugal pump.

H. What is the difference between a vertical multistage pump and a horizontal multistage pump?
The main differences between a vertical multi stage pump and a horizontal multi stage pump are;
1.The orientation of the pump
2.The vertical multi stage pump is above ground and may be used where there are space limitations however the motor needs to be removed before maintenance can be performed.
3.Vertical multi stage pumps are used in some applications where the motor needs to be lifted from the sump so that the unit can be maintained. It is common in vertical pumps for the thrust load to be taken by the motor e.g. VTP turbine pumps which have electric motors specifically designed for this type of pump to eliminate the need for a thrust bearing in the pump resulting in less complexity and costs. VTP pumps can be produced with column lengths of more than 100 metres.
4.Horizontal multi stage pumps are mounted using feet which for high temperature applications are a special design to allow for thermal growth and thus avoid operating issues due to expansion and contraction. They would need to be aligned with the electric motor. On vertical pumps, the mounting is perhaps simpler i.e for sump pumps, a support plate would be fixed with standard bolting and generally no alignment is required as the motor is flanged and it is self aligning with the corresponding register.

I. Which type of multistage pump is more commonly used in industry?
The most common type of multi stage pump used in Industry is the horizontal multi stage pump and vertical multi stage pump (above ground) mounted centrifugal pumps. However, multi stage side channel pumps would also be relatively common along with the vertical turbine pumps.

SEMHAI can offer a full range of Flowserve's Multi stage pumps.We provide localised technical support & on-site service engineering to support your operational needs.

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