Premium Quality Mining Booster Pump with Mechanical Seal and Flexible Coupling

• 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 dynamic SHD and SHDG single-suction multistage segmental type centrifugal pumps, expertly engineered for seamless conveyance of water and fluids akin to water, devoid of any solid particles. The SHD pump effortlessly handles fluids with temperatures not exceeding 80 ºC, making it ideal for application in mines, factories, and urban drainage systems. Meanwhile, the SHDG pump is adept at managing fluids up to 105 ºC, perfect for use as a boiler feed pump or in the delivery of hot water in various high-temperature scenarios.

Structural features
The robust SHD and SHDG pumps are meticulously constructed from integral components such as the stator, rotor, bearings, and a sophisticated shaft seal system.
1. Stator Part: This section is composed of key elements like the inhalation, middle, and discharge sections, along with guide vanes, all meticulously clamped with tension bolts to create a dynamic running part. The SHD-type pump features a horizontal inlet with a vertical outlet, whereas the SHDG type boasts both vertical inlet and outlet configurations.
2. Rotor Parts: Central to this assembly are the shaft, impeller, balance plate, and bushings. The shaft is the powerhouse, transferring energy to the impeller for optimal operation. Axial forces are expertly counterbalanced by the balance plate, and both ends of the shaft are safeguarded with replaceable shaft sleeves.
3. Bearing Part: A choice of two superior bearing types: rolling bearings and sliding bearings:
Sliding bearings comprise the bearing body, caps, dust disk, oil level gauge, and rejection mooring rings, all lubricated with high-grade oil. Rolling bearings, on the other hand, include the bearing body, bearings, and gland, utilizing precision grease lubrication for optimal performance.
4. Shaft Seal Parts: Choose between a mechanical seal or packing seal, ingeniously designed with water segments and filler components secured by retaining rings. The seal chamber liquid provides essential water sealing, cooling, and lubrication functions. The SHD pump derives its seal water from internal pressure, while the SHDG takes it from external cooling or standard temperature water. Seal water pressure must exceed the seal chamber by 0.05-0.1MPa, while cooling water pressure is optimized at 0.15-0.3MPa.

Additionally, the pump operates with precision, driven directly by a prime motor via a flexible coupling, ensuring seamless clockwise rotation when viewed from the motor end.

Our SHD and SHDG pumps, with their single-suction multistage segmental type centrifugal design, can be powered by either an electric motor or a diesel engine, offering versatility and adaptability for various operational needs.

Detailed Photos

In multistage centrifugal pumps, significant thrust arises due to the impellers all rotating in the same direction. To manage this, a thrust balance device, such as a balance disc or balance drum, is incorporated. This precision-engineered device effectively reduces the thrust, allowing it to be easily managed by a standard-sized thrust bearing.
Our impellers are available in a selection of robust materials including cast iron, cast steel, stainless steel, and the elegant bronze, ensuring durability and versatility for any application.

Flexible couplings
Flexible couplings, unlike their rigid counterparts, are adept at accommodating movement, such as vibrations and thermal expansion, without sustaining damage. This capacity makes them the quintessential choice for scenarios where some misalignment between drive and pump shafts is unavoidable. By effectively absorbing vibrations, they not only protect the system but also significantly reduce operational noise. Though their design is more complex and potentially costly, these couplings offer long-term savings by shielding the shaft and bearings from harm and premature wear.
We proudly employ wear-resistant disc couplings or pin couplings to ensure optimal performance and longevity.

Packing seals, favored for many years, use rope-like materials that coil around the pump shaft, reducing fluid loss by filling dead space. However, over time, the gland packing material can deteriorate, leading to increased fluid loss, impaired lubrication, and difficulty in replacement.

Mechanical seals are the superior choice over traditional packing seals in varied applications where leakage must be minimized. Renowned for their durability, these advanced seals are engineered to withstand substantial operational demands. By utilizing multiple sealing points, basic mechanical seals effectively eliminate leakage concerns, setting a new standard in sealing technology.

Product Parameters

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

Product Application

For those seeking robust and reliable solutions in pressure boosting systems, our pumps are the go-to choice. These systems often necessitate an unwavering flow and pressure, making our horizontal multistage pumps the preferred choice. Explore the wide array of applications that benefit from our innovative technology:
Mine dewatering - expertly engineered to handle the rigorous demands of extracting water from mining environments.
High-density living - ensuring consistent water pressure for high-rise apartments and large residential complexes.
Snow making - designed to support artificial snow production, ideal for ski resorts.
Boiler feed systems - delivering precise and steady water supply to boilers for optimal performance.
Reverse Osmosis - providing essential pressure for the purification of water through reverse osmosis systems.
Industrial applications - tailored for diverse manufacturing processes requiring substantial and sustained pressure.
Condensate - efficiently managing condensate return systems to improve energy conservation and reduce waste.
High-pressure cleaning/wash down facilities - offering superior performance for industrial cleaning operations.
Jacking pumps for fire hydrant systems - vital for enhancing fire safety by maintaining readiness and high-pressure delivery.
Irrigation and fire hose reel supply - ensuring reliable water distribution for agricultural and firefighting needs.
Showers - providing a superior shower experience with consistent water pressure.
Co-generation - supporting energy efficiency through combined heat and power systems.
Spray - engineered for uniform and effective spray applications across various industries.
Pressure Boosting - masterfully designed to elevate pressure, ensuring efficient system performance across numerous 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.