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Oil Rotary Pump
Oil Rotary Pump
Regarding your oil rotary pump selection requirements, and based on the parameters of the CYB10-3Y rotary pump recommended by our technical staff, the following is a detailed analysis from the perspectives of technical compatibility, performance matching, and practical application:
I. Core Parameter Matching Verification
Media and Viscosity
Oil Type: Specific composition not specified, but requires electric heating and insulation (40-60℃), presumably high-viscosity lubricating oil, asphalt, or heavy fuel oil.
Viscosity Range: 50,000-70,000 cP (ultra-high viscosity medium). The CYB10-3Y rotary pump can typically handle viscosities up to 1 million cP, fully meeting the requirements.
Temperature Adaptability: The pump head is made of SS304 stainless steel, with a typical temperature resistance range of -20℃ to 200℃. There is no risk of deformation under operating conditions of 40-60℃.
Flow Rate and Pressure
Flow Rate Requirement: 360 kg/h (approx. 0.4 m³/h). The theoretical flow rate range of CYB10-3Y is typically 0.1-5 m³/h, which can cover the required flow rate.
Discharge Pressure: 0.6 MPa (approx. 6 bar). The standard pressure rating of the rotor pump is 0.6-1.6 MPa, meeting the requirement of a conveying distance of 40 meters (including pipeline resistance).
Power and Efficiency
Motor Power: 4kW variable frequency drive, which can automatically adjust the speed according to the actual viscosity (e.g., reducing the speed to 50-150 rpm for high viscosity), saving energy and reducing wear.
Volume Efficiency: High-quality rotor pumps can achieve a volumetric efficiency of over 90%, with an actual flow rate fluctuation rate of <2%, ensuring metering accuracy.
II. Structure and Material Compatibility
Pump Head Material:
SS304 Stainless Steel: Suitable for neutral oils (such as lubricating oil and hydraulic oil). If the oil contains corrosive additives (such as chlorine and sulfur compounds), it is recommended to upgrade to 316L stainless steel or Hastelloy.
Sealing Type
Mechanical Seal: Employs a silicon carbide/tungsten carbide hard-on-hard seal, wear-resistant and suitable for high-temperature media. If the oil contains solid particles (such as sand in asphalt), a double-end mechanical seal or packing seal is required.
Base Material
Stainless Steel Base: Highly corrosion-resistant, suitable for humid or chemical environments, matching the pump head material to reduce the risk of electrochemical corrosion.
III. Key Performance Advantages
High Viscosity Delivery Capacity
The rotary pump delivers media through volumetric compression. Higher viscosity results in lower leakage (compared to gear pumps), maintaining stable flow even at viscosities of 50,000-70,000 cP.
Self-Priming and Pulsation-Free
Self-priming height up to 8.5 meters (dry self-priming), no priming required; multi-rotor design (e.g., three-lobe rotor) ensures flow fluctuation <2%, avoiding measurement errors during oil weighing.
Low Shear Delivery
With speed controlled between 50-300 rpm, shear stress <50 Pa, preventing additives in the oil (such as anti-wear agents) from failing due to shear.
IV. Potential Risks and Improvement Suggestions
* **Media Corrosivity:** If the oil contains highly corrosive components (such as concentrated acids or halogens), the pump head should be coated with PTFE or made of titanium alloy.
* **Solid Particle Content:** If the oil contains solid particles (such as sand in asphalt), the following should be done:
* **Increase the rotor-pump body clearance to 0.3-0.8 mm;**
* **Use a hard alloy coated rotor (such as TiAlN coating, hardness HV 3,200).**
* **Long-Term Operational Stability:** It is recommended to replace the mechanical seal every 2000 hours and check rotor wear every 500 hours (replace if clearance > 0.3 mm).
V. Selection Decision Tree Verification
* **Media Characteristics:** High viscosity (50,000-70,000 cP), neutral or weakly corrosive oil → Select a rotary pump (superior to gear pumps and centrifugal pumps).
* **Flow Rate and Pressure:** 0.4 m³/h, 0.6 MPa → CYB10-3Y covers the flow rate and pressure range.
Material and Sealing: SS304 pump head + mechanical seal → Suitable for neutral oils; upgrade required for corrosive conditions.
Certifications and Standards: No specific certifications (e.g., ATEX, FDA) are mentioned; supplementary certifications are required for food/pharmaceutical applications.
Cost and Lifespan: Rotary pumps have higher initial costs than gear pumps, but longer lifespans (3-5 years vs. 1-2 years), resulting in lower total lifespan costs.
VI. Final Recommendation Conclusion: The CYB10-3Y rotary pump fully meets requirements under the following conditions:
Oil viscosity: 50,000-70,000 cP (temperature 40-60℃);
Flow rate: 0.4 m³/h (360 kg/h);
Pressure: 0.6 MPa;
Media: Neutral or weakly corrosive oils (free from strong acids, halogens, and solid particles).
Model adjustment is required in the following situations:
Oil containing highly corrosive components → Replace with a 316L stainless steel pump head + PTFE coating;
Oil containing solid particles → Select a twin rotor pump + hard alloy coated rotor;
Higher precision required → Add frequency converter control + flow meter feedback to achieve ±0.1% F.S. accuracy.
Email: sales01@cxflowmeter.com
WhatsApp: 008618049841995
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