Oil Rotor Pump

Oil Rotary Pump

Based on the customer's oil rotary pump selection requirements and the parameters of the CYB10-3Y rotary pump recommended by

 our technical staff, we provide a detailed analysis from four dimensions: technical compatibility, performance optimization, potential risks,

 and pricing suggestions, and offer a complete selection solution:

I. Analysis of Customer's Core Needs

Media Characteristics

Oil Type: 3 types (specific components not specified, but all require electric heating for insulation), presumably high-viscosity lubricating

 oil, asphalt, or heavy fuel oil.

Temperature Range: 40-60℃ (requires electric heating; viscosity may further increase due to low ambient temperature or high medium 

freezing point).

Viscosity: 50,000-70,000 cP (ultra-high viscosity medium, requiring special pump type).

Transportation and Metering Requirements

Flow Rate: 360 kg/h (approximately 0.4 m³/h, density calculated at 900 kg/m³). Pressure: For a conveying distance of 40 meters

 (including pipeline resistance), frictional losses along the pipeline must be overcome (for DN40 pipelines, at a viscosity of

 50,000-70,000 cP, the coefficient of friction is approximately 0.1-0.3, resulting in a pressure loss of approximately 0.3-0.5 MPa). 

Therefore, the discharge pressure must be ≥0.6 MPa.

Metering Accuracy: The oil scale accuracy must be ±50g ±0.2% F.S. (full scale 180kg). Stable pump output flow rate with

 fluctuation <0.5% is required.

Structural and Material Requirements:

Corrosion Resistance: The oil may contain additives (such as anti-wear agents and rust inhibitors), requiring the pump head 

material to be resistant to chemical corrosion.

Sealing: High-viscosity media are prone to leakage, necessitating a reliable sealing method.

Cleanliness: If used in the food/pharmaceutical industry, it must meet hygiene standards (e.g., 316L stainless steel, polished finish).

II. CYB10-3Y Rotary Pump Compatibility Verification

Flow Rate and Pressure Matching

Theoretical Flow Rate: The CYB10-3Y has a flow range of 0.1-5 m³/h, fully covering the 0.4 m³/h requirement.

Discharge Pressure: 0.6 MPa (standard configuration), meeting the resistance requirements for a 40-meter conveying distance.

Variable Frequency Control: The 4kW variable frequency motor automatically adjusts its speed according to viscosity (e.g., reducing 

to 50-100 rpm for high viscosity) to ensure stable flow.

Viscosity Handling Capacity

Rotor Pump Advantages: Transports media through volumetric compression; the higher the viscosity, the lower the leakage 

(compared to gear pumps). It maintains efficient delivery even at viscosities of 50,000-70,000 cP.

Shear Sensitivity: Low-speed (50-300 rpm) design, shear stress <50 Pa, preventing oil additive failure.

Materials and Sealing

Pump Head Material: SS304 stainless steel, suitable for neutral oils (such as lubricating oil and hydraulic oil). If the oil contains highly 

corrosive components (such as chlorine and sulfur compounds), it needs to be upgraded to 316L stainless steel or Hastelloy.

Sealing type: Mechanical seal (silicon carbide/tungsten carbide hard-on-hard), wear-resistant and suitable for high-temperature 

media. If the oil contains solid particles (such as sand particles in asphalt), it needs to be changed to a double-end mechanical seal

 or packing seal.

III. Potential Risks and Optimization Suggestions

**Media Corrosion Risk**

Risk: If the oil contains strong acids, halogens, or organic solvents, SS304 may experience pitting or stress corrosion.

Optimization: Use a 316L stainless steel pump head with a PTFE coating, or select titanium alloy material (resistant to chloride

 ion corrosion).

**Solid Particle Content Risk**

Risk: If the oil contains solid particles (such as sand particles in asphalt), it may wear the rotor or clog the seal.

Optimizations:

Increase the rotor-pump body clearance to 0.3-0.8mm;

Use a hard alloy coated rotor (e.g., TiAlN coating, hardness HV 3,200);

Switch to a twin-rotor pump (reducing single-rotor load and extending service life).

Temperature Control Risks

Risk: Insufficient electric heating insulation may lead to increased medium viscosity, increasing pump load.

Optimizations:

Add a temperature sensor to the pump inlet to link with the heating system to maintain medium temperature;

Select a pump head with an insulation jacket to reduce heat loss.

IV. Selection Decision Tree and Final Recommendation

Decision Tree Verification

Media Type: High-viscosity oils (50,000-70,000 cP) → Rotary pump (superior to gear pumps and centrifugal pumps).

Flow Rate and Pressure: 0.4 m³/h, 0.6 MPa → CYB10-3Y coverage range.

Material and Sealing: Neutral oils → SS304 + mechanical seal; Corrosive/particulate oils → Upgrade material + seal.

Certification Requirements: No specific certifications (e.g., ATEX, FDA) are mentioned. Additional certifications are required if the 

pump is used in the food/pharmaceutical industry.

Final Recommended Solution: Basic Model: CYB10-3Y Rotary Pump (SS304 pump head + mechanical seal), suitable for neutral oils.

Upgraded Models (for corrosive/particulate environments):

CYB10-3Y-316L: 316L stainless steel pump head + double-end mechanical seal;

CYB10-3Y-HC: Hastelloy pump head + carbide rotor.

Supporting Equipment:

Inverter (included in the 4kW motor);

Temperature sensor (optional);

Insulation jacket (optional).

If you have specific selection and pricing needs for rotary pumps, industrial pumps, or chemical pumps, please contact

  Winny:

Email: sales01@cxflowmeter.com

WhatsApp: 008618049841995