Mixed Flow Pumps With Guide Vanes
Vertical Mixed Flow Pumps: High efficiency, Large flow rate, Excellent cavitation resistance.
Vertical mixed flow pumps provide high efficiency and large volumes. Their adjustable blades allow for optimal performance in applications with significant water level fluctuations and higher head requirements. The vertical arrangement saves floor space. The flexibility of vertical mixed flow pumps, including four types of outlets and adjustable elbow positioning (above or below the baseplate), always makes them a better solution for customers.
Mixed Flow Pumps
For the chemical industry: Featuring a leading-edge two-phase flow hydraulic design that complies with ISO5199 standard, mixed flow pumps deliver high efficiency and reliable performance in large-flow, medium-head applications. Superior materials ensure maximum corrosion resistance and wear resistance.
For agriculture & Municipal drainage: The cast iron mixed flow pump is mounted on a portable trailer and equipped with a diesel engine and a control cabinet, offering a flexible and cost-effective solution for pumping clean water or river water.
Mixed Flow Pumps from YOUNAI
YOUNAI’s mixed flow pumps are capable of efficiently handling medium with large flow rates and moderate heads. Our complete series of mixed flow pumps offers a wide range of hydraulic performance. We manufacture mixed flow pumps designed for outstanding corrosion and abrasion resistance, using a range of materials from stainless steel, duplex stainless steel, titanium, monel, MCU、Cr15Mo3、DTM、M-6, to silicon carbide ceramics. Whether it is the horizontal mixed flow pump or the vertical mixed flow pump, they are trusted in demanding industries—including chemical processing, desulfurization, mineral processing, agricultural irrigation, and water conservancy—for their high reliability and efficiency as well as long lifetime.
Mixed Flow Pump
Mixed flow pumps designed for horizontal mounting, also known as chemical mixed flow pumps, offer a simple structure, a wide range of high efficiency, high reliability and stability, and an extended service life.
Flow rates: up to 3900 m3 /h
Heads: up to 80 m
Temperatures: up to 150 °C
Flow rates: up to 1450 m3 /h
Heads: up to 55 m
Temperatures: up to 110 °C
Flow rates: up to 1450 m3 /h
Heads: up to 55 m
Temperatures: up to 110 °C
Flow rates: up to 6500 m3 /h
Heads: up to 65 m
Temperatures: up to 180 °C
Flow rates: up to 6500 m3 /h
Heads: up to 65 m
Temperatures: up to 40 °C
Flow rates: up to 9000 m3 /h
Heads: up to 28 m
Temperatures: up to 60 °C
Mixed Flow Pumps: Vertical Installation
Guide vane mixed flow pumps ( vertical mixed flow pumps or diagonal flow pumps) : vertical suction, angular discharge, multiple installation options.
Mixed Flow Pump Benefits
YOUNAI mixed flow pumps: specialists in high-flow, moderate-head applications, delivering high efficiency, low noise, stable operation and superior reliability.
The mixed flow impeller ensures high efficiency in the most demanding applications.
Optimized hydraulic models enable the smooth operation and reliable performance.
Thickened wear plate, casing, cover and shaft, plus optimized wear parts, deliver extended reliability and lifespan.
A silicon carbide ceramic lining designed to handle medium containing corrosive and abrasive particles.
Mechanical seal life ≥8000 h, bearing life ≥10,000 h, continuous trouble-free operation time ≥30,000 h.
Closed or semi-open impeller designs ensure the pump’s high adaptability to handling a wide range of solid-laden fluids.
Mixed Flow Pumps for Harsh Duties
YOUNAI mixed-flow pumps specialize in pumping solid-liquid two-phase flows: delivering maximum abrasion and corrosion resistance, and ensuring maximum durability in the most demanding applications.
Flue gas desulfurization process
Flow rates: up to 8600 m3 /h
Consistencies: up to 30%
Copper sulfate
Flow rates: up to 6000 m3 /h
Consistencies: up to 38%
Phosphoric acid
Flow rates: up to 1100 m3 /h
Consistencies: up to 60%
aluminium hydroxide
Flow rates: up to 1100 m3 /h
Consistencies: up to 60%
Metal impeller skeleton + silicon carbide ceramic composited material
Inside YOUNAI Mixed-Flow Pump Workshop
These on-the-spot photos from our workshops give you a complete 360° look at the superior craftsmanship quality of our mixed-flow pumps.
- Mixed Flow Pump
- Chemical Mixed Flow Pump
- NSP Mixed Pump
- High-Temperature Mixed Flow Pump
- Ceramic Mixed Flow Pump Impeller
During operation, the high-speed rotation of the mixed flow impeller forces the fluids to rotate and generates centrifugal force, throwing the fluids outward. Inside the volute diffusion chamber, the fluid decelerates, increasing its pressure before being discharged vertically upward through the discharge flange.
The mixed-flow pump is a general concept in the pump manufacturing industry, categorized based on their characteristic of delivering large flow rates at medium heads. They can be subdivided into: Pull-out mixed flow pump, which is a large-scale pump designed for easier maintenance; Non pull out mixed flow pump, a smaller pump known for stable operation and high reliability; Guide vane mixed flow pump, with a higher specific speed; Axial mixed flow pump, with a lower specific speed; Adjustable blade mixed flow pump, where blades can be fully, semi-, or non-adjustable; Non-adjustable blade mixed flow pump, where blades are fixed. Horizontal mixed flow Pump, installed horizontally; Vertical mixed flow pump, featuring a long column and installed vertically.
Mixed flow pumps Combine the larger mass flow rate of axial pumps with higher pressure of centrifugal pumps. They can convey clear liquids as well as two-phase flows containing hard particles; YOUNAI adopts the best hydraulic design and special materials to manufacture the mixed flow pump with excellent operational performance, challenging the previous limitations of corrosion resistance and wear resistance, and meeting the sever requirements of many applications for mixed flow pumps. There are no limits to installation options, with both horizontal mixed flow pumps and vertical mixed flow pumps available, and YOUNAI boasts extensive experience and many references in their design, customization, manufacturing, and installation.
Related Pumps
Axial Flow Pump
Vertical Axial Flow Pump
Vertical Pump
Centrifugal Pump
Slurry Pump
A Comprehensive Guide: Mixed Flow Pump
A mixed flow pump with guide vanes is vertically installed, providing large capabilities, enhanced operational efficiency, minimal space requirements, and adjustable performance characteristics suitable for a wide range of applications. Mixed flow pumps are widely used in chemical industry, general industry, thermal power plants for circulating water transportation, agricultural irrigation and drainage, urban water supply and drainage, etc.
Structure of a vertical single-stage guide vane mixed flow pump:
Pump body components: suction, impeller, pump shaft, impeller casing, guide vane assembly, discharge, middle pipe, seal and couplings.
Suction : For small and medium-sized mixed flow pumps, the suction is designed as a bell-shaped; for the large mixed flow pump, it is an elbow-shaped or bell-shaped suction flow channel.
Impeller: The impeller is composed of parts of blades, impeller hub, guide cone and nuts.
Guide vane: The guide vane assembly is positioned above the impeller.
Pump shaft: made from high-carbon chromium steel to transmit torque to the impeller.
Discharge: Discharge section with an angled outlet direction relative to the inlet flow, also referred to as a diagonal flow pump. Standard discharge adopts a straight-pipe; The large-sized mixed flow pump should adopt a siphon-type outlet flow channel with a vacuum breaker valve.
Transmission parts: motor, coupling/ V-belts
For small and medium-sized mixed flow pumps, the transmission part adopts direct drive by a vertical motor. The vertical motor is installed on the motor base and connected to the transmission shaft through an elastic coupling. Bearings are lubricated with grease or oil. The transmission shaft is connected by rigid couplings. Optional V-belts are available for small mixed flow pumps.
Performance characteristics of mixed flow pumps:
High flow rate and medium head. The combined characteristic of centrifugal and axial forces within the impeller, guide vane, and flow channel enables efficient fluid propulsion.
Wide high-efficiency operation range. The Q-H curve and Q-η curve of mixed flow pumps are relatively flat and smooth, allowing stable operation with high efficiency over a wide range of flow rate variations. This adaptability makes it ideal for diverse applications.
superior cavitation resistance. Low NPSHr value requires a relatively lower suction liquid level height.
Widely applied fields:
Industrial circulating water, water conservancy projects, municipal drainage, flood control pumping stations, agricultural irrigation, marine water jet propulsion, wastewater treatment, industrial sewage treatment factory, circulating cooling water systems in power stations.
In mixed flow pumps, the guide vane plays a critical role, even being named after the alternate name “guide vane mixed flow pump”. Positioned directly after the impeller, its function is to transform the kinetic energy from the impeller’s high-speed output into pressure energy. Its fixed vanes guide the flow in a controlled direction into the discharge, reducing turbulent vortex and swirl, thereby significantly lowering hydraulic losses.
We offer flexible installation options to match your space and piping needs. The position of the outlet flange of the mixed-flow pump can be adjusted upwards.
- The motor is mounted directly on the pump’s bearing unit and connected by a V-belts to limit the equipment footprint.
- A side-mounted arrangement where the motor and pump share common baseplate and are connected by V-belts, minimizing the footprint.
- The motor and pump are mounted on a common baseplate and connected by diaphragm couplings, which is the most common installation scheme. The mixed-flow pumps are pre-aligned at the factory. This type also allows for maintenance without pipe or motor disassembly.
- The motor is mounted on an overhead bracket behind the pump and connected by V-belts, saving floor space.
- Double foundation arrangement: The pump’s base plate and the motor’s base plate are fixed on two separate foundation levels;
- Can-type arrangement: The pump is submerged in a canister or in a deep sump or pit, and the buoyant force of the liquid partially counteracts the pump’s own weight;
- Inclined arrangement: The vertical mixed flow pump is set at a certain angle to the horizontal plane, used for special cases where the pump column is very long. As vertical mixed flow pumps are all customized according to the site conditions for each application, we are committed to delivering reliable fluid transfer solutions with a design tailored to your specific requirements.
