High Quality Horizontal Multistage Centrifugal Booster Pump for Mining Applications

• Customization: Available
• After-sales Service: Online After-Sale Service
• Warranty: 12 Months
• 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

Product Description

Introducing the impressive SHD and SHDG single-suction multistage segmental type centrifugal pumps, masterfully engineered for delivering water or fluids mirroring water's physical and chemical properties, all while excluding solid particles. The SHD pumps are adept at transferring fluids with temperatures capped at 80 ºC, making them perfect for applications in mines, factories, and urban drainage systems. Meanwhile, the SHDG pumps handle fluids up to 105 ºC, rendering them ideal for use as boiler feed pumps or for conveying hot water and in contexts requiring similar capabilities.

Structural features
The SHD and SHDG centrifugal pumps are composed of a stator, rotor, bearings, and a sophisticated shaft seal system.
1, Stator part: Ingeniously designed, this component is comprised of the inhalation section, middle section, spit section, and guide vanes. These components are fastened with tension bolts to form the dynamic running part. The SHD pump is distinct with its horizontal inlet and vertical outlet, whereas the SHDG type is crafted with both inlet and outlet aligned vertically.
2, Rotor parts: This essential part includes the robust shaft, impeller, balance plate, and bushings, among other critical components. The shaft efficiently transfers power to the impeller to ensure functionality; axial force is expertly balanced by the balance plate. Moreover, both shaft ends feature replaceable sleeves for enhanced protection.
3, Bearing part: Offers two types of bearings: rolling and sliding bearings:
Sliding bearings are built from a bearing body, caps, bearing components, dust disks, oil level gauges, rejection mooring rings, and more, all lubricated with thick oil. On the other hand, rolling bearings comprise the main body, bearings, and gland, utilizing grease lubrication to ensure smooth operation.
4, Shaft seal parts: This intricate system can utilize either mechanical or packing seals, featuring water segment and seal body filler, with retaining ring components at the tail cover letter. The seal chamber liquid is designed to support water sealing, cooling, and lubrication. The SHD pump sources seal water from pressure water within the pump, whereas the SHDG draws from external cooling water or normal temperature water. The seal water pressure must exceed the seal chamber pressure by 0.05-0.1MPa, while the cooling water pressure should range between 0.15 and 0.3MPa.

Furthermore, the pump is seamlessly driven by a prime motor through a flexible coupling, ensuring a clockwise rotation when viewed from the prime motor's perspective.

The SHD and SHDG single-suction multistage segmental type centrifugal booster pumps offer versatility, as they can be powered by either an electric motor or a diesel engine, adapting to diverse operational needs.

Detailed Photos

In the world of multistage centrifugal pumps, the powerful thrust generated by impellers aligned in the same direction requires sophisticated innovation. These pumps are equipped with thrust balance devices, such as the ingenious balance disc or balance drum, which expertly mitigate thrust to a level manageable by a standard-sized thrust bearing. This ensures smooth and efficient operation, safeguarding the longevity of your system.
Our impellers are crafted from a selection of robust materials including cast iron, cast steel, stainless steel, and bronze. This offers flexibility and durability to meet the demanding conditions of various applications.

Flexible couplings
Flexible couplings, unlike their rigid counterparts, are engineered to gracefully accommodate movement like vibrations and thermal expansion without sustaining damage. Ideal for applications necessitating a degree of misalignment between drive and pump shafts, they enhance the system by absorbing vibrations, thereby reducing excessive noise. Though they come with a more complex and costly design, their ability to protect shafts and bearings promises long-term maintenance savings, making them a strategic investment.
Our selection includes wear-resisting disc couplings and pin couplings, ensuring durability and reliability in performance.

Packing seals have a longstanding reputation as a widely embraced sealing solution. Utilizing resilient rope-like materials, they wrap around the pump shaft to effectively minimize fluid loss. Over time, as gland packing materials wear, fluid loss may increase, potentially affecting regular lubrication and ease of replacement.

In applications demanding minimal leakage, mechanical seals reign supreme over traditional packing seals. Engineered to endure harsh conditions, mechanical seals employ multiple sealing points to virtually eliminate leakage, offering a durable and reliable solution.

Product Parameters

Flow rate	6-1000m3/hr
Head rate	25-650m
Speed	1450-2900rpm
Medium temperature	0-105 ºC
Diameter	40-350mm

Product Application

Pressure boosting systems frequently rely on these efficient and powerful pumps. These scenarios typically necessitate a stable flow and consistent pressure, making horizontal multistage pumps ideal for the task. Key projects that benefit from these pumps include:
Mine dewatering
High density living
Snow making
Boiler feed systems
Reverse Osmosis
Industrial applications
Condensate
High pressure cleaning and wash down facilities
Jacking pumps for fire hydrant systems
Irrigation and fire hose feed supply
Showers
Cogeneration
Spray
Pressure Boosting

Facilities & Equipments

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.