Shijiazhuang Ruite Pump Co., Ltd. is one of the most reliable manufacturers and suppliers of slurry pump volute liner in China. Welcome to wholesale durable slurry pump volute liner made in China here from our factory. All pumps are with high quality and competitive price.
Key Functions
Energy Conversion
Converts the kinetic energy of the high-speed slurry ejected by the impeller into pressure energy, thereby increasing the delivery head and distance.
Flow Guidance and Stabilization
The specially designed volute flow path guides the slurry toward the outlet, reducing vortices, impact, and hydraulic losses.
Wear and Corrosion Resistance
As the primary wear-bearing component within the pump (particularly the tongue and inner walls of the flow channel), it directly withstands the scouring, friction, and corrosion caused by solid particles.
Structural Support
Provides mounting, positioning, and structural support for components such as the impeller, wear plates, and pump shaft.
Key Features and Design Requirements of Slurry Pump Volute Liner
Wear-Resistant Design
- Materials: Typically made of wear-resistant materials such as high-chromium cast iron, rubber linings (natural rubber or polyurethane), and ceramic composites to resist scouring and wear caused by solid particles in the slurry.
- Structure: The flow passage cross-section is designed in a "spiral" shape that gradually widens from the partition tongue to the outlet to reduce flow velocity and minimize wear. Critical wear areas (such as the baffle and outlet transition zone) are reinforced or undergo special hardening treatments.
Hydraulic Design
- Cross-Section Shape: Common cross-section shapes include rectangular, semicircular, or trapezoidal. Rectangular cross-sections are easier to manufacture and replace linings; circular or semicircular cross-sections offer superior hydraulic performance and smoother flow.
- Diffusion Angle: The design of the diffusion section (from the volute outlet to the flange connection) must be gradual to prevent slurry separation, vortex formation, and accelerated wear.
- Throat Clearance: The size of the throat (the clearance between the volute inlet and the impeller outer edge) directly affects the pump's efficiency, cavitation performance, and operational stability. Excessively small clearances may lead to cavitation and vibration; excessively large clearances reduce efficiency. Optimization must be based on the pump's specific speed and specific operating conditions.
Factors to Consider in Volute Liner Selection
- Slurry Characteristics: Concentration, particle size, shape, hardness, and corrosiveness of solid particles.
- Operating Parameters: Flow rate, head, and pump speed (specific speed range).
- Balance between wear resistance and cost: High-chromium cast iron volutes offer high wear resistance but are costly; rubber-lined volutes are suitable for particles of medium or smaller size without sharp edges, and offer the advantages of noise reduction and cavitation resistance.
- Ease of maintenance: For applications requiring frequent replacement of wear parts, a design that facilitates disassembly and liner replacement is critical.
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