China Factory High Quality Multistage Electric Booster Pump for Mining

• 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 SHD and SHDG single-suction multistage segmental type centrifugal pumps, engineered for excellence in conveying water or fluids with physical and chemical properties akin to water, without solid particulates. The SHD model efficiently transmits fluids at temperatures below 80ºC, making it an ideal choice for applications in mines, factories, and urban drainage systems. Meanwhile, the SHDG model is designed to handle fluids up to 105ºC, perfectly suited for use as a boiler feed pump or for transporting hot water in similar scenarios.

Structural Features
The robust design of the SHD and SHDG pumps comprises key components such as the stator, rotor, bearings, and shaft seal, ensuring reliable performance and longevity.
1. Stator Part: The stator unit is predominantly composed of sections for inhalation, the mid-section, and discharge, complemented by precisely engineered guide vanes. These components are securely held together by tension bolts to form a cohesive running unit. The SHD pump features a horizontal inlet and a vertical outlet, while the SHDG pump boasts both vertical inlet and outlet configurations.
2. Rotor Parts: The rotor assembly includes vital elements such as the shaft, impeller, balance plate, and bushings. The shaft is the power conduit to the impeller, instigating its movement, while the balance plate adeptly manages axial forces. For added durability, the shaft is equipped with replaceable sleeves at both ends, ensuring long-term protection.
3. Bearing Part: The design incorporates two types of bearings: rolling bearings and sliding bearings, each tailored for optimal operation.
Sliding bearings consist of a bearing body, caps, bearings, dust disks, oil level gauge, rejection mooring rings, and utilize thick oil for lubrication. Conversely, rolling bearings are composed of the main body, bearings, and gland, operating with grease lubrication for smooth functionality.
4. Shaft Seal Parts: The shaft seal systems employ either mechanical or packing seals, primarily constituted by the water segment and sealed body filler, with tail cover letter retaining ring components. The seal chamber liquid performs the critical functions of sealing, cooling, and lubricating. The SHD pump utilizes internal pressure water for sealing, whereas the SHDG model uses external cooling and ambient temperature water. The seal water pressure must be higher than the seal chamber by 0.05-0.1MPa, and the cooling water pressure must range from 0.15-0.3MPa for optimal performance.

In addition, the pump is directly driven by a primary motor through a flexible coupling, showcasing its clockwise rotation when viewed from the prime motor end, ensuring seamless and efficient operation.

These SHD and SHDG single-suction multistage segmental type centrifugal booster pumps offer versatility, being operable with either an electric motor or a diesel engine, catering to diverse operational needs.

Detailed Photos

In the realm of multistage centrifugal pumps, the powerful forces generated by impellers oriented in the same direction demand a sophisticated solution. Enter the thrust balance device, an engineering marvel in the form of a balance disc or balance drum. This ingenious apparatus adeptly mitigates the thrust, bringing it down to levels that can be efficiently managed by a standard-sized thrust bearing, ensuring unparalleled performance and reliability.
The choice of impeller material can significantly influence performance and durability. Options include robust cast iron, resilient cast steel, corrosion-resistant stainless steel, and the timeless elegance of bronze.

Innovative Flexible Couplings
Unlike their rigid counterparts, flexible couplings are designed with adaptability in mind. Capable of accommodating minor movements such as vibrations and thermal expansions, they are the go-to solution for scenarios with unavoidable misalignment between drive and pump shafts. These couplings excel in absorbing vibrations, thus significantly reducing operating noise. While they come with a more intricate and costly design, the investment pays off through long-term maintenance savings. By safeguarding the shaft and bearings from damage and premature wear, flexible couplings ensure durability and efficiency.
In our cutting-edge designs, we employ wear-resisting disc couplings or pin couplings, ensuring robust and reliable performance.

Packing seals have stood as a stalwart sealing solution for decades. Utilizing rope-like materials, these seals securely wrap around the pump shaft, filling any voids to minimize fluid loss. However, as time progresses, these materials may wear, eventually increasing fluid loss and potentially complicating regular lubrication or ease-of-replacement—a factor crucial for optimal operation.

In many applications requiring minimal leakage, mechanical seals are the superior choice over traditional packing seals. Renowned for their durability, these modern seals are crafted to endure significant operational demands. They employ multiple sealing points to virtually obliterate leakage issues, providing peace of mind and enhanced efficiency in diverse 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

Seamlessly integrated into pressure boosting systems, these versatile pumps are engineered to maintain constant flow and pressure, perfectly meeting the stringent demands of diverse applications. Here are some of the most dynamic projects that benefit from the use of a horizontal multistage pump:
Mine dewatering: Ensure safety and efficiency in mining operations by effectively managing water levels.
High density living: Enhance urban infrastructure by delivering reliable water supply to high-rise buildings.
Snow making: Create ideal winter landscapes with precision-engineered snow production systems.
Boiler feed systems: Optimize thermal efficiency by providing consistent water supply to boilers.
Reverse Osmosis: Achieve unparalleled water purification with high-pressure, multistage pump support.
Industrial applications: Boost productivity and operational efficiency across varied industrial sectors.
Condensate: Manage and recycle condensate for enhanced sustainability in industrial processes.
High pressure cleaning/wash down facilities: Deliver unmatched cleaning power for industrial-grade hygiene.
Jacking pumps for fire hydrant systems: Ensure rapid response and fire safety with robust jacking pump solutions.
Irrigation and fire hose feel supply: Deliver consistent water flow for agricultural productivity and emergency readiness.
Showers: Provide luxurious water pressure for an invigorating shower experience.
Co-generation: Support energy efficiency and resource optimization through integrated co-generation solutions.
Spray: Enable precision fluid distribution for diverse application needs.
Pressure Boosting: Elevate water delivery with cutting-edge pressure boosting technology for optimal performance.

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.