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The double-lobed rotor pump (specifically for biogas and sewage) is a positive displacement pump designed for handling complex media. It features a two-lobed wide-edge screw rotor structure and employs linear sealing technology to achieve efficient transportation of high-viscosity and high-solid-content media. The pump integrates wear-resistant rubber-coated rotors with a 316 stainless steel pump body, making it particularly suitable for conveying fermentation substrates in biogas projects and sludge transfer in sewage treatment systems. It can withstand media with a solid content rate of up to 55% and viscosities as high as 1,000,000 CP.
Core technological advantages
1. Rotor design specifically optimized for biogas/sewage conditions
Adopting a double blade wide edge spiral rotor and replacing traditional surface sealing with line sealing technology, the contact wear between the rotor and the pump chamber is reduced by more than 60%. A case study of a biogas project in the UK shows that when using this type of rotary pump to transport digestive fluids containing plastic impurities (with a solid content of 4-6%), it can run continuously for 12 months without failure, reducing maintenance costs by 42% compared to traditional cam pumps
2. Super strong anti blocking ability
Large channel structure: inlet and outlet diameters of 25-108 mm, capable of passing solid particles up to 80 mm in diameter and impurities from 30 mm long fibers
Self cleaning function: Optimized design with a rotor helix angle of 15 ° to prevent material accumulation during the transportation of corn silage (solid content 30-35%)
Bidirectional conveying capability: By simply changing the motor direction, the medium can flow in reverse, making it easy to flush and troubleshoot pipelines
3. Efficient and energy-saving system
Low pulsation conveying: Flow pulsation rate ≤ 5%, reducing pipeline vibration by 30% compared to a three bladed rotor pump, operating noise ≤ 75 dB (weighted by A)
Wide range adjustment performance: Equipped with a variable frequency motor, it can achieve stepless speed regulation of 40-500 rpm, with a flow range covering 0.1-150 m ³/h
Deep self-priming capacity: The maximum self-priming height is 9.5 meters, which can directly extract materials from underground sewage tanks without the need for auxiliary pumping
Technical Specifications Table
Parameter item | Numeric Range | Remark |
Flow | 0.1-150 m³/h | Linearly related to rotational speed |
Head | 0.2-1.8 MPa | Single stage maximum 1.8 MPa |
Medium viscosity | 1-1000000 CP | Maximum solid content of 55% |
Import and export caliber | 25-108 mm | Clamp/flange connection optional |
power range | 0.37-132 kW | The standard motor is YE2 series high-efficiency motor |
Operating Temperature | -20-120 ℃ | Special materials can reach up to 180 ℃ |
Sealing method | External mechanical seal | Dual end face flushing structure can be selected |
Structural Characteristics
1. Modular design
Quick opening pump cover: four bolt fixed structure, rotor inspection can be completed within 15 minutes, saving 70% maintenance time compared to traditional design
Removable lining plate: The pump chamber is equipped with wear-resistant ceramic lining plates, which can be replaced separately after wear, reducing spare parts costs by 50%
Multiple sealing options: Standard single end mechanical seal, optional containerized double end seal (compliant with API 682 standard)
2. Intelligent protection system
Leakage monitoring: The independent lubrication chamber is equipped with pressure sensors to monitor the mechanical seal status in real-time
Overload protection: The motor is equipped with PTC thermistor, which can achieve dual protection of locked rotor and overload
Remote monitoring: Supports MODBUS protocol access to PLC system, enabling real-time uploading of operating parameters
The double-lobed rotor pump (specifically for biogas and sewage) is a positive displacement pump designed for handling complex media. It features a two-lobed wide-edge screw rotor structure and employs linear sealing technology to achieve efficient transportation of high-viscosity and high-solid-content media. The pump integrates wear-resistant rubber-coated rotors with a 316 stainless steel pump body, making it particularly suitable for conveying fermentation substrates in biogas projects and sludge transfer in sewage treatment systems. It can withstand media with a solid content rate of up to 55% and viscosities as high as 1,000,000 CP.
Core technological advantages
1. Rotor design specifically optimized for biogas/sewage conditions
Adopting a double blade wide edge spiral rotor and replacing traditional surface sealing with line sealing technology, the contact wear between the rotor and the pump chamber is reduced by more than 60%. A case study of a biogas project in the UK shows that when using this type of rotary pump to transport digestive fluids containing plastic impurities (with a solid content of 4-6%), it can run continuously for 12 months without failure, reducing maintenance costs by 42% compared to traditional cam pumps
2. Super strong anti blocking ability
Large channel structure: inlet and outlet diameters of 25-108 mm, capable of passing solid particles up to 80 mm in diameter and impurities from 30 mm long fibers
Self cleaning function: Optimized design with a rotor helix angle of 15 ° to prevent material accumulation during the transportation of corn silage (solid content 30-35%)
Bidirectional conveying capability: By simply changing the motor direction, the medium can flow in reverse, making it easy to flush and troubleshoot pipelines
3. Efficient and energy-saving system
Low pulsation conveying: Flow pulsation rate ≤ 5%, reducing pipeline vibration by 30% compared to a three bladed rotor pump, operating noise ≤ 75 dB (weighted by A)
Wide range adjustment performance: Equipped with a variable frequency motor, it can achieve stepless speed regulation of 40-500 rpm, with a flow range covering 0.1-150 m ³/h
Deep self-priming capacity: The maximum self-priming height is 9.5 meters, which can directly extract materials from underground sewage tanks without the need for auxiliary pumping
Technical Specifications Table
Parameter item | Numeric Range | Remark |
Flow | 0.1-150 m³/h | Linearly related to rotational speed |
Head | 0.2-1.8 MPa | Single stage maximum 1.8 MPa |
Medium viscosity | 1-1000000 CP | Maximum solid content of 55% |
Import and export caliber | 25-108 mm | Clamp/flange connection optional |
power range | 0.37-132 kW | The standard motor is YE2 series high-efficiency motor |
Operating Temperature | -20-120 ℃ | Special materials can reach up to 180 ℃ |
Sealing method | External mechanical seal | Dual end face flushing structure can be selected |
Structural Characteristics
1. Modular design
Quick opening pump cover: four bolt fixed structure, rotor inspection can be completed within 15 minutes, saving 70% maintenance time compared to traditional design
Removable lining plate: The pump chamber is equipped with wear-resistant ceramic lining plates, which can be replaced separately after wear, reducing spare parts costs by 50%
Multiple sealing options: Standard single end mechanical seal, optional containerized double end seal (compliant with API 682 standard)
2. Intelligent protection system
Leakage monitoring: The independent lubrication chamber is equipped with pressure sensors to monitor the mechanical seal status in real-time
Overload protection: The motor is equipped with PTC thermistor, which can achieve dual protection of locked rotor and overload
Remote monitoring: Supports MODBUS protocol access to PLC system, enabling real-time uploading of operating parameters