The 6-inch Heavy Duty Vertical Slurry Pump is a 6-inch (export diameter 150mm) heavy-duty model among the vertical cantilever submersible slurry pumps. The pump shaft is perpendicular to the horizontal plane, with the motor and bearing assembly located above the liquid surface. The impeller is suspended and immersed in the pool medium through an extended shaft; the submersible part has no bearings or mechanical seals, relying solely on sliding bearings (rubber sleeves or copper sleeves) for guidance and lubrication by the medium itself. This structure offers three major advantages: ① Zero shaft seal leakage - fundamentally eliminating the most common failure point of slurry pumps; ② Zero shaft seal water consumption - no need for external flushing water, saving operating costs; ③ No need to fill water for startup - the impeller is immersed in the medium, eliminating the problem of air binding. The 6-inch diameter falls within the medium-sized range in the family of vertical slurry pumps, with a single unit flow rate reaching 480 m³/h. It is the main model for mine pit sinking, power plant ash storage tanks, and mineral processing tailings transportation.
Structural Characteristics
Cantilever long shaft structure: The pump shaft is divided into the upper shaft (motor end) and the lower shaft (liquid impeller end), which are connected by a variable center coupling in the middle; the longer the liquid immersion depth, the more shaft segments there are.
No shaft seal design: The submerged immersion section has no mechanical seal, no packing, and no submerged bearings. This completely eliminates the problems of shaft seal leakage and water ingress in the bearings, making it the biggest maintenance advantage of vertical submersible pumps compared to submersible slurry pumps.
Stirring impeller (optional): An impeller is added below the main impeller at the bottom of the pump body to stir up the hard mud at the bottom of the pool and discharge it along with the flow, preventing sedimentation.
Bearings assembly: Heavy-duty rolling bearings + robust bearing seat + large-diameter shaft, lubricated with grease, and easy to maintain.
Outlet direction: The outlet flange can be rotated at eight different angles by 45° intervals according to the requirements of the on-site pipeline layout.
Application scenario
6-inch Heavy Duty Vertical Slurry Pump With the features of "no shaft seal, long cantilever shaft, and 6-inch large flow capacity", it performs exceptionally well in the following applications:
Mining and Metallurgy: Sedimentation tank discharge in beneficiation plants, tailings reservoir backfilling, grinding and classification return sand, bottom flow transportation of concentrators
Electricity and Energy: Ash and slag pools in power plants, desulfurization gypsum slurry pools, furnace bottom slag water quenching pits, hydraulic ash removal systems
Coal Washing: Coal slurry tanks in coal washing plants, heavy media shallow trough discharge, bottom flow of concentrators
Steelmaking: High-temperature blast furnace slag transportation, continuous casting turbid circulating water tanks, steel rolling iron oxide scale sedimentation pits
Environmental Protection and Municipal Services: Sludge discharge from aeration tanks in wastewater treatment plants, sludge concentration tanks, garbage leachate collection tanks
Building Materials and Chemicals: Dust collection ash tanks in cement kilns, glaze tanks in ceramic factories, phosphorus fertilizer slurry tanks, thermal power plant fly ash
Dredging Projects: River dredging, fish pond silt removal, reservoir sand discharge (combined with high-pressure water gun loosening soil)
OEM/ODM
The four elements for selection: ① Pool depth (determining the liquid depth + number of shaft sections); ② Flow rate and head; ③ Medium characteristics (particle size, pH, temperature, concentration); ④ Whether a stirring impeller is needed to prevent sedimentation.
Selection between SP and SPR:
If the medium is mainly abrasive and has a pH of 6–9 → Select SP metal type (A05 high chromium)
If the medium contains corrosive agents, pH < 5 or > 10 → Select SPR rubber-lined type
If it contains chloride ions or seawater → Select A33 duplex stainless steel material
Selection of liquid depth: The pump body's suction hole should be 200–300 mm lower than the lowest liquid level in the pool; when the liquid depth is > 1.8 m, it is recommended to install an intermediate guide bearing (rubber sleeve) to stabilize the shaft system; when > 3 m, it is recommended to reduce the rotational speed to 500–700 rpm to reduce shaft deflection.
Comparison with submersible slurry pumps: If the pool depth is 1–3 m and the medium is not too thick → Submersible slurry pump (ZJQ) is more economical; if the pool depth is 1.5–3.5 m and frequent maintenance is required, and the medium temperature is high → 6-inch Heavy Duty Vertical Slurry Pump is more suitable (the motor is above the liquid surface, and maintenance does not require lifting the entire machine).
Custom service: Extend the liquid depth (up to 3.5 m), special flange standards (ANSI/DIN/GB), explosion-proof motor (ExdⅡBT4), reverse rotation, full rubber lining (SPR), installation of the stirring impeller, OEM of the nameplate.
Supplier Introduction
CZME is a world-leading professional manufacturer of high-performance pump equipment. Its products are widely applicable to various industries such as mining, construction, environmental protection, and water treatment. The company's main products include slurry pumps, dredging pumps, desulfurization pumps, offshore dredging pumps, and various industrial pump equipment, which are specifically designed for transporting slurries containing solid particles, with high abrasion resistance and strong corrosiveness. With profound technical accumulation in the fields of slurry transportation and wastewater treatment, CZME has gained the trust of customers all over the world and has become a reliable supplier for long-term and stable cooperation.
Faq
Which payment methods are supported?
Answer: T/T (30% deposit, balance before shipment).
Letter of Credit (irrevocable, accepted by major banks).
Western Union/Paypal (for small orders <$5,000).
How long is the delivery time?
Answer: Inventory pumps: 7 working days (factory delivery, standard specifications).
Custom pumps: 40 working days (including design, casting and testing).
What materials are required for the quotation?
A: Flow rate (m³/h); Head (m); Medium; Solid content; pH value;
Maximum particle size (mm); Slurry density; Voltage (V); Frequency (Hz); Additional information.
Are OEM parts available?
Answer: Yes, we offer complete OEM/ODM support, including:
Material upgrades: Cr27-Cr30, natural rubber or polyurethane lining.
Design modifications: Impeller channels, sealing systems (packing and mechanical).
Performance adjustments: Efficiency optimization for specific slurry types.
Branding: Laser engraving or casting your logo.
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