Robust Horizontal Water Pump for High Pressure Mining and Boiler Feed

• 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 series, leading-edge single-suction multi-stage segmental type centrifugal pumps. These engineering marvels are adept at transporting water or fluids with similar physical and chemical properties, free from solid particles. The SHD model eloquently handles fluids at temperatures below 80 ºC, making it ideal for urban drainage, mining, and factory applications. Meanwhile, the SHDG variant is a powerhouse for boiler feed applications and hot water delivery, accommodating temperatures up to 105 ºC with unmatched efficiency.

Structural Features
The distinctive SHD and SHDG pumps boast an impressive assembly crafted from a stator, rotor, bearings, and a robust shaft seal.
1, Stator Part: This essential component comprises the inhalation, middle, spit sections, and guide vanes, all securely clamped with tension bolts to form the operational unit. The SHD pump is ingeniously designed with a horizontal inlet and vertical outlet, whereas the SHDG pump features vertical entry and exit points, offering versatility in application.
2, Rotor Parts: At the heart of the pump lies the rotor, featuring a shaft, impeller, balance plate, and bushings. The shaft efficiently channels power to the impeller, ensuring seamless operation. Axial forces are expertly countered by the balance plate, while both ends of the shaft are shielded with replaceable sleeves for enduring protection.
3, Bearing Part: Choose between two innovative bearing types: rolling and sliding.
Sliding Bearings: Comprising a bearing body, caps, dust disk, and oil level gauge, supported by rejection mooring rings, these components are maintained with thick oil lubrication. Rolling bearings feature a main body, bearings, and gland, and are sustained with grease lubrication, ensuring consistent performance.
4, Shaft Seal Parts: This critical section incorporates either mechanical or packing seals, supported by water segments and sealed body filler, along with retaining ring components at the tail end. The seal chamber liquid facilitates water sealing, cooling, and lubrication. The SHD pump's seal water is sourced internally, while the SHDG draws cooling water from an external source. To optimize performance, seal water pressure should exceed the chamber by 0.05-0.1MPa, and cooling water pressure should be maintained at 0.15-0.3MPa.

Additionally, the pump enjoys the advantage of being directly driven by a prime motor via a flexible coupling, rotating smoothly in a clockwise direction when viewed from the motor end.

The versatile SHD and SHDG single-suction multistage segmental type centrifugal booster pumps can be operated with an electric motor or a diesel engine, adapting effortlessly to diverse power sources.

Detailed Photos

In the realm of multistage centrifugal pumps, a significant amount of thrust is generated due to the alignment of impellers facing the same direction. To manage this high level of thrust effectively, these pumps are equipped with a specialized thrust balance device, such as a balance disc or balance drum. This ingenious mechanism reduces the thrust to a manageable level, allowing it to be efficiently handled by a standard-sized thrust bearing, ensuring smooth and reliable pump operation.
The impeller material options include robust cast iron, durable cast steel, corrosion-resistant stainless steel, and premium bronze. Each material is selected to meet specific requirements, ensuring optimal performance and longevity of the pump.

Flexible couplings
In contrast to rigid couplings, flexible couplings offer the advantage of accommodating various movements, such as vibrations and thermal expansions, without inflicting any damage. This flexibility makes them ideal for scenarios where slight misalignment between drive and pump shafts is inevitable. Additionally, their ability to absorb vibrations contributes to reducing excessive noise during operation. Despite their more intricate and costly design, flexible couplings offer long-term savings by protecting shafts and bearings from damage and premature wear, minimizing maintenance needs.
Our pumps are equipped with wear-resisting disc couplings or pin couplings, designed to enhance durability and operational efficiency.

Packing seals have long been a favored sealing solution, utilizing rope-like materials to wrap around the pump shaft, effectively minimizing fluid loss by filling in dead spaces. However, as time progresses, the inevitable wear of the gland packing material can increase fluid loss, potentially affecting lubrication and ease of replacement, which are vital for optimal pump functionality.

Mechanical seals are the superior choice over traditional packing seals, especially in applications where preventing leakage is paramount. Renowned for their durability, mechanical seals are engineered to withstand more rigorous conditions. Their advanced design, incorporating multiple sealing points, significantly reduces leakage, offering dependable and efficient sealing solutions.

Product Parameters

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

Product Application

Our versatile and powerful Robust Horizontal Water Pump for High Pressure Mining and Boiler Feed is a cornerstone in pressure boosting systems. These systems require unwavering consistency in flow and pressure to ensure optimal performance. Discover some of the most prevalent projects that benefit from the unparalleled capabilities of our horizontal multistage pump:
Mine dewatering: Efficiently handle the critical task of removing excess water from mining sites to ensure safe and continuous operations.
High density living: Provide seamless water supply solutions in densely populated regions, addressing the challenges of modern urban environments.
Snow making: Elevate the winter experience by powering artificial snow systems, essential for ski resorts and recreational parks.
Boiler feed systems: Deliver precise water pressure to boiler systems, ensuring a reliable supply for heating applications.
Reverse Osmosis: Support advanced filtration processes by supplying the necessary pressure for reverse osmosis systems, crucial for producing clean and safe water.
Industrial applications: Cater to a myriad of industrial needs, enhancing operational efficiency with consistent and powerful water flow.
Condensate: Manage and transport condensate effectively in various industrial settings, maintaining system integrity and performance.
High pressure cleaning/wash down facilities: Facilitate rigorous cleaning processes with robust pressure capabilities, ideal for maintaining hygiene and cleanliness in demanding environments.
Jacking pumps for fire hydrant systems: Ensure rapid and reliable water delivery to fire hydrant systems in emergencies, offering peace of mind and security.
Irrigation and fire hose feed supply: Optimize water distribution for agricultural irrigation and emergency fire hose deployment, critical for resource management and safety.
Showers: Enhance domestic and commercial shower systems with consistent and invigorating water pressure for an exceptional bathing experience.
Co-generation: Support co-generation plants with efficient water supply, crucial for combined heat and power systems to operate seamlessly.
Spray: Deliver precision spraying solutions for agricultural, industrial, and recreational applications, ensuring uniform coverage and efficiency.
Pressure Boosting: Elevate water pressure levels to meet the specific demands across various sectors, providing reliable and consistent performance in all 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.