Installation dimensions of the pump (dimensions at fixed speeds,
installation dimensions for specific speeds are attached when ordering)
G-type single screw pump is a kind of internal meshing closed screw
pump, which belongs to the rotor type positive displacement pump.
Because this pump has strong adaptability to the medium, stable flow,
good suction performance and small pressure pulsation, it can transport
various In addition to the flowing medium, it can also transport highly
viscous media, media containing hard suspended particles or solid
particles, and media containing fibers. It has good adjustment
performance, wide range and high efficiency. Therefore, it is used in
environmental protection, ships, petroleum, medicine , daily chemicals,
food, brewing, construction, mining, chemistry, printing, paper, power
plants, boilers and other industries are widely used.
The single screw pump is an internal meshing rotary positive
displacement pump. The main working parts are the eccentric screw
(rotor) and the fixed bushing (stator), due to the special geometry of
the rotor and stator. Several separate sealed chambers are respectively
formed, and the operation of the rotor transports the medium in each
sealed chamber from the suction end to the extrusion end continuously,
at a uniform speed and with a constant volume. Due to these
characteristics, the single screw pump is especially suitable for the
following conditions;
1. Conveying high viscosity medium;
2. Conveying media containing solid particles or fibers;
3. Continuous, stable pressure and no periodic pressure fluctuations are required;
4. The agitation is required to be small without destroying the inherent structure of the conveyed medium;
5. Low noise.
pump structure
Scope of application
As a general-purpose pump, the flow rate
of the single-screw pump can be changed according to the requirements,
the running speed can be high or low, and the outlet pressure can
increase with the increase of the pump stages. Scope and industry wide
application:
1. Environmental protection: transportation of
industrial sewage, domestic sewage, sludge water containing solid
particles and short fibers, especially suitable for oil-water
separators, plate and frame filter presses and other equipment;
2. Shipbuilding industry: transportation of wheel bottom cleaning, oily water, oil residue, oily sewage and other media;
3.
Petroleum industry: transporting crude oil, a mixture of crude oil and
water, a mixture of coal gas and water, injecting polymers into the
formation, etc., thereby reducing the cost of mechanical oil recovery
and coal gas mining, and increasing oil port recovery ;
4. Medicine and daily chemicals: transportation of various viscous slurries, emulsions, and various ointments and cosmetics;
5.
Food canning industry: transportation of various viscous starch,
cooking oil, honey, syrup, fruit pulp, butter, fish and meat mill and
its leftovers;
6. Brewing industry: various fermented viscous
slurries, concentrated distiller's grains, grain products, various
sauces, slurries and liquids containing massive solids, etc.;
7. Construction industry: spraying and conveying of cement mortar, lime mortar, paint and other pastes;
8. Mining industry: the groundwater and sludge water containing solid particles in the mine are discharged to the ground;
9. Chemical industry: various suspensions, oils, various colloids, various adhesives;
10.
Printing and paper industry: conveying high viscosity ink, PVC polymer
plastic paste for wallpaper, pulp of various concentrations, and short
fiber pulp.
11. Industrial boilers, power plants: transportation of coal-water slurry.
Performance table of single screw pump
Performance parameters at fixed speed
How the pump is driven
Single screw pump with the basic characteristics of rubber
Single screw pump according to the medium selection of stator rubber
Single stage, by the gear change speed, electromagnetic adjustment motor
and gear change speed or stepless speed motor and gear change speed
performance parameters
Double stage, by the gear change, electromagnetic adjustment motor and
gear change or stepless speed change motor and gear change performance
parameters
Performance parameters of single and double stage coal water slurry pump
G series single screw pump: Technical Guide, Quality Control, and Installation
The G Series Single Screw Pump is a widely used positive displacement pump engineered to handle a variety of fluids, including high-viscosity, abrasive, and shear-sensitive liquids. Known for its durability, stable performance, and versatile applications, this pump is trusted in industries such as wastewater treatment, food processing, chemical manufacturing, oil and gas, and pharmaceuticals.
This guide provides a detailed overview of the quality control standards, customer feedback, technical specifications, and installation guidelines for the G Series Single Screw Pump, ensuring that customers and industrial operators can make well-informed decisions.
Table of Contents
Introduction to the G Series Single Screw Pump
Quality Control and Manufacturing Standards
Technical Parameters and Specifications
Customer Reviews and Feedback
Installation Guide and Illustrations
Maintenance Tips for Long-Term Reliability
Conclusion
Introduction to the G Series Single Screw Pump
The G Series Single Screw Pump, also known as a progressive cavity pump, utilizes a helical rotor and a stator to achieve continuous, low-pulsation fluid transfer. It is designed for applications where other pumps may fail, particularly when handling viscous fluids, slurries, or liquids containing solid particles.
Key Features:
Smooth, low-pulsation fluid delivery
High efficiency with viscous or abrasive fluids
Capable of self-priming
Long service life with proper maintenance
Simple design for easy cleaning and servicing
Quality Control and Manufacturing Standards
The G Series Single Screw Pump is produced under strict quality assurance systems to guarantee durability and performance. Each pump undergoes rigorous testing before leaving the factory.
Quality Control Measures:
Material Selection – Rotors are manufactured from hardened steel or stainless steel; stators are made from high-quality elastomers for chemical resistance.
Dimensional Accuracy – CNC machining ensures precision fitting between rotor and stator.
Performance Testing – Each unit is tested for flow rate, pressure capacity, and leak-proof sealing.
Compliance Standards – Pumps meet international certifications such as ISO 9001 for quality management and CE marking for safety compliance.
Durability Checks – Pumps undergo wear resistance and corrosion resistance testing to extend service life.
Technical Parameters and Specifications
The technical specifications of the G Series Single Screw Pump vary depending on model and application requirements.
Table: Standard Technical Specifications
| Parameter | Range / Value | Notes |
|---|
| Flow Rate | 0.1 to 150 m³/h | Depending on model size and rotor design |
| Pressure Capacity | Up to 2.4 MPa | Suitable for high-pressure transfer |
| Viscosity Handling | Up to 1,000,000 cP | Ideal for highly viscous or thick fluids |
| Solid Content Capability | Up to 40% | Slurries, wastewater, and chemical sludges |
| Temperature Range | -20°C to +150°C | With elastomer material compatibility |
| Rotor Material | Stainless steel, chrome-plated steel | Customization available |
| Stator Material | NBR, EPDM, FKM elastomers | Depending on fluid type |
Customer Reviews and Feedback
Customer experiences highlight the reliability, efficiency, and cost-effectiveness of the G Series Single Screw Pump.
Positive Feedback:
Food Industry User: “The G Series pump maintains product integrity and prevents shear damage to sensitive ingredients.”
Wastewater Plant Operator: “Durable even with high solid content. Low maintenance requirements save time and cost.”
Chemical Manufacturer: “Excellent corrosion resistance and customizable stator materials make it versatile for chemical fluids.”
Improvement Suggestions:
Some customers requested quicker stator replacement systems for minimizing downtime.
For extremely high-viscosity applications, customers recommend using variable frequency drives (VFDs) to optimize flow control.
Installation Guide and Illustrations
Proper installation is critical to ensure the G Series Single Screw Pump operates safely and efficiently.
Installation Instructions:
Foundation – Install the pump on a level, vibration-free base using anchor bolts.
Alignment – Ensure proper coupling alignment between motor and pump to avoid shaft wear.
Piping – Use flexible connections to reduce stress on pump nozzles. Install check valves and strainers if required.
Lubrication – Follow manufacturer recommendations for lubrication of drive components.
Startup – Prime the pump with liquid before startup. Avoid dry running to prevent stator damage.
Maintenance Tips for Long-Term Reliability
Regular maintenance extends the life of the G Series Single Screw Pump.
Routine Inspection: Check rotor and stator wear every 2–3 months.
Seal Check: Inspect mechanical seals or packing for leaks.
Lubrication: Maintain appropriate grease levels in bearings.
Cleaning: Flush the pump with water or cleaning solution after processing sticky or corrosive fluids.
Spare Parts: Keep spare rotors, stators, and seals available for emergency replacements.
Conclusion
The G Series Single Screw Pump offers exceptional durability, high efficiency, and flexible performance across multiple industries. With robust quality control, detailed technical specifications, and clear installation and maintenance guidelines, it remains a trusted solution for industrial fluid handling.
By combining customer feedback, strict testing standards, and international certifications, this pump ensures safe, reliable, and cost-effective operation, making it an ideal choice for businesses worldwide.
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