Heavy Duty High Pressure Booster Pump for Mining and Industrial Use

• 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

Discover the SHD and SHDG single-suction multistage segmental type centrifugal pumps, expertly engineered to convey water and similar fluids without solid particles. The SHD pumps efficiently manage transmission fluids at temperatures below 80 ºC, making them an ideal choice for mines, factories, and urban drainage systems. Meanwhile, the SHDG pumps are crafted to handle fluids with temperatures up to 105 ºC, perfectly suited for applications like boiler feed pumps or the delivery of hot water.

Structural Features
The exceptional SHD and SHDG pumps are composed of four key components: the stator, rotor, bearings, and shaft seal, each contributing to the pump's unparalleled performance and reliability.
1, Stator Part: The stator is meticulously designed with sections for inhalation, middle passage, and discharge, along with expertly crafted guide vanes. This segmental construction is securely clamped with tension bolts, ensuring smooth operation. The SHD-type pump features a horizontal inlet and vertical outlet, whereas the SHDG type offers both vertical inlet and outlet configurations, tailored to diverse needs.
2, Rotor Parts: The rotor, a masterpiece of engineering, consists of the shaft, impeller, balance plate, bushings, and more. The shaft is the powerhouse, transferring energy to the impeller to generate optimal performance. The ingenious balance plate manages axial forces, while the replaceable shaft sleeves at both ends provide robust protection.
3, Bearing Part: These pumps are equipped with two types of bearings: rolling and sliding.
The sliding bearing is composed of a dynamic bearing body, caps, dust disk, oil level gauge, rejection mooring rings, and more, all lubricated by thick oil. The rolling bearing includes a primary body, bearings, and gland, utilizing grease lubrication for smooth operation.
4, Shaft Seal Parts: Choose between a mechanical seal or a packing seal, each expertly designed with water segments, sealed body fillers, and retaining ring components. The seal chamber liquid performs critical functions, including water sealing, cooling, and lubrication. The SHD pump sources seal water from internal pressure, while the SHDG uses cooling water from outside. The seal water pressure must exceed the seal chamber by 0.05-0.1MPa, with cooling water pressure ranging from 0.15-0.3MPa for optimal performance.

Moreover, this pump is directly driven by a prime motor through a flexible coupling, ensuring seamless operation. Designed for clockwise rotation, it is engineered to perfection, viewed from the prime motor end.

The SHD and SHDG single-suction multistage segmental type centrifugal booster pumps offer the versatility to be powered by either an electric motor or a diesel engine, providing flexible options to meet your diverse operational needs.

Detailed Photos

In the realm of multistage centrifugal pumps, a significant amount of high thrust is produced because the impellers are aligned in the same direction. To manage this powerful thrust, our pumps are equipped with a specialized thrust balance device, such as a balance disc or balance drum. These components play a crucial role in reducing the intense thrust to a level that can be effortlessly managed by a standard-sized thrust bearing, ensuring optimal performance and longevity.
The impeller material options include robust and durable choices such as cast iron, cast steel, stainless steel, and bronze, each selected for their superior ability to withstand challenging conditions and deliver exceptional performance.

Flexible couplings
Flexible couplings are a step ahead of rigid couplings. They adeptly handle movement, whether from vibrations or thermal expansion, without incurring damage. This makes them an ideal choice for applications where slight misalignment between the drive and pump shafts is inevitable. Their exceptional ability to absorb vibrations not only helps in reducing excessive operational noise but also enhances the durability of the equipment. Despite their more intricate and costly design, the protection they offer to shafts and bearings from damage and premature wear translates into significant maintenance savings over time.
Our pumps are equipped with either wear-resisting disc couplings or pin couplings, both designed to enhance durability and performance.

For years, packing seals have been the go-to sealing solution, utilizing rope-like materials that wrap snugly around the pump shaft. This design effectively fills dead space and minimizes fluid loss. However, as time progresses, these materials may wear down, leading to increased fluid loss, impaired lubrication, and challenges in replacement and maintenance. Despite their historical use, there are evolving alternatives available.

In a wide array of applications, especially where preventing leakage is paramount, mechanical seals have emerged as the superior choice over traditional packing seals. Engineered to endure extensive use, these advanced mechanical seals boast multiple sealing points, significantly reducing the risk of leaks. Their robust design offers enhanced durability and reliability, making them the preferred solution in critical operational environments.

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 are a quintessential component in infrastructure requiring unwavering flow and consistent pressure. The Heavy Duty High Pressure Booster Pump by Shanghai Semhai Pump Co., Ltd. is tailored for these challenging environments. Such resilient systems are frequently deployed in horizontal multistage pump projects, including:
Mine dewatering - Essential for maintaining safety and efficiency in mining operations.
High density living - Ensuring water supply stability amid urban sprawl.
Snow making - Facilitating optimal conditions for snow resorts, regardless of natural snowfall.
Boiler feed systems - Providing the steady pressure required for efficient thermal power generation.
Reverse Osmosis - Integral in producing high-purity water for various industrial needs.
Industrial applications - Versatile across numerous sectors for dependable pressure management.
Condensate - Ensuring effective condensation processes in energy systems.
High pressure cleaning/wash down facilities - Delivering the power needed for heavy-duty cleaning tasks.
Jacking pumps for fire hydrant systems - Critical for fire safety and emergency readiness.
Irrigation and fire hose feel supply - Sustaining agriculture and fire prevention through reliable water delivery.
Showers - Enhancing residential and hospitality experiences with consistent water pressure.
Co generation - Supporting combined heat and power systems for increased efficiency.
Spray - Ensuring precise and effective application in various industrial processes.
Pressure Boosting - Elevating system performance across a myriad of demanding applications.

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.