Rice Slurry Transfer Pump

 

For customers needing to transfer rice slurry (rice flour mixed with water, viscosity 500 million, flow rate 1L/min, head 1.5m, room temperature), the CYB5-3Y rotary pump recommended by our technicians basically meets the core parameters.
However, further optimization of speed matching, confirmation of viscosity units, and attention to the suitability of sealing type and materials are needed. The specific analysis is as follows:

 

I. Core Parameter Matching Analysis

 

Flow Rate Matching

Customer Requirement: 1L/min (i.e., 0.06m³/h)

Recommended Pump: CYB5-3Y, with a flow rate of 0.06m³/h, is a perfect match, ensuring stable delivery.

 

Pressure and Head Matching

Customer Head Requirement: 1.5m (corresponding to approximately 0.015MPa pressure)

Recommended Pump: Discharge pressure 0.6MPa, far exceeding the requirement, with sufficient safety margin, but it needs to be confirmed whether viscosity affects the actual pressure requirement.

 

Speed ​​Matching

 

Recommended Pump Type: 75 rpm

 

Key Issue: Viscosity 500 million (confirm unit is centipoise cP or millipascals mPa·s). If it's 50000 cP (50 Pa·s), it's a high-viscosity medium, usually requiring a lower speed (e.g., 50-150 rpm) to avoid cavitation and wear. 75 rpm is reasonable,
but the pump type's adaptability to high viscosity needs verification.

 

II. Key Component and Operating Condition Compatibility

 

Material Selection

Pump Head Material: SS304 Stainless Steel

Applicability: Rice slurry is a food-grade medium; 304 stainless steel meets hygiene standards, but confirm if it's 304L (better corrosion resistance). If the rice slurry contains acid or salt, upgrading to 316L stainless steel is recommended.

 

Sealing Method

Sealing Method: Mechanical Seal

 

Recommendation: High-viscosity media tend to accumulate at the seal, leading to leakage or wear. Wear-resistant mechanical seals (e.g., silicon carbide/tungsten carbide materials) are recommended, or consider double-end mechanical seals to enhance reliability.

 

Drive Method

 

Drive Method: 2.2kW Variable Frequency Motor

 

Advantages: Variable frequency speed control can flexibly adapt to flow fluctuations, but it needs to be confirmed whether the motor power needs to be further increased due to high-viscosity media (high viscosity will lead to increased power demand).

 

III. Potential Risks and Optimization Suggestions

 

Viscosity Unit Confirmation

 

If the customer's viscosity unit is 50000 mPa·s (i.e., 50 Pa·s), it is considered extremely high viscosity. It needs to be confirmed whether the pump type supports this type of media (e.g., a single screw pump or a high-viscosity rotor pump may be more suitable).

 

Suggestion: Request the customer to provide the viscosity unit, or verify the pump's actual performance at 50000 cP through experiments.

 

Speed ​​and Wear Balance

High-viscosity media require low speeds to reduce shear force and wear, but excessively low speeds may affect flow stability.

 

Suggestion: If 75 rpm causes flow fluctuations, it can be fine-tuned to a range of 50-100 rpm using the frequency converter.

 

Pipeline Design Optimization

High-viscosity media have poor flowability. It is necessary to ensure that the pipe diameter is sufficient (DN40 or above recommended) to reduce resistance and avoid sharp bends or excessive valves.

 

If you would like to learn more about the specific selection and pricing of industrial pumps, food pumps, rotary pumps, and chemical pumps, please feel free to contact CIXIFM. Winny:

Email: sales01@cxflowmeter.com
WhatsApp: 008618049841995