G-Type Single ScrewPumpProduct Overview:

G-Type Single Screw Pump is a new type of pump that operates based on the principle of rotary meshing volumetric displacement. Its main working components are the eccentric screw (rotor) and the fixed bushing (stator). Due to the geometric shapes of these two components, separate sealed chambers are formed. The medium is uniformly propelled axially with low internal flow velocity, constant volume, and stable pressure, thus avoiding turbulence and agitation. Each stage of the pump delivers an output pressure of 0.6 MPa and a head of 60 m (for clear water). The self-priming height is generally 6 m, and it is suitable for conveying media with temperatures below 80°C (can be extended to 150°C upon request). Since the stator is made of various elastic materials, this pump is capable of handling high-viscosity fluids and media containing hard suspended particles or fibers, which are challenging for conventional pumps. The flow rate is proportional to the rotational speed. Transmission can be achieved via direct coupling or using speed-regulating motors, V-belts, gearboxes, and other speed-changing devices.

G-Type Single ScrewPumpDetailed Content:

The selection of a G-TypeSingle Screw Pump model is determined by the properties of the liquid to be conveyed, as well as the required flow rate and pressure. The pump's rotational speed is chosen based on the viscosity and corrosiveness of the liquid as the primary parameters to ensure proper operation.

The design speed of the G-Type Single Screw Pump is the allowable speed for conveying clear water or similar non-corrosive liquids. In practical applications, due to differences in media properties and service life requirements, the selected speed is generally lower than the design speed. For high-viscosity and particle-containing media, the speed is typically set at 1/2 to 1/3 of the design speed. Lower speeds are beneficial for reducing pump wear. However, as the stator wears over time and flow rate decreases, appropriately increasing the speed can compensate for the flow reduction, which is a common practice.

G-Type Single ScrewPumpModel Significance:

G-Type Single ScrewPumpFeatures:

G-TypeSingle Screw Pump operates on the principle where a single-thread helical rotor performs planetary rotation within a double-thread helical stator bore. This action creates sealed chambers that continuously, steadily, and at a constant volume convey the medium from the suction end to the discharge end. Due to this ingenious working principle, the single screw pump exhibits the following general characteristics of conventional pumps:

1. Capable of conveying high-viscosity media. Depending on the pump size, media viscosity can reach up to 200,000 centipoise.

2. Capable of conveying media containing solid particles, abrasive particles, and fibers. The content can generally reach 40%, and for media with fine powdered solids, it can reach up to 70%. The allowable particle size ranges from 2 mm to 40 mm, depending on the pump size.

3. Delivers continuous, uniform liquid output with stable pressure and minimal agitation, ensuring no alteration to sensitive liquid compositions.

4. Flow rate is directly proportional to rotational speed. Flow can be adjusted by regulating the speed, and when paired with a variable-speed motor, it becomes a variable flow pump.

5. Pressure automatically adjusts according to the output pipeline resistance. Users can easily set the desired pressure within the range of 0-36 (kg/cm2), ensuring energy efficiency and avoiding pressure issues that could affect the process.

6. Simple structure with easy replacement of parts and convenient daily maintenance.

G-Type Single ScrewPumpApplication Range:

G-Type SingleScrew Pump, as a versatile pump, allows flow rate adjustment by changing speed. It can operate at high or low speeds, and the outlet pressure increases with the number of pump stages—each additional stage adds 0.6 MPa. It is widely used in the following ranges and industries:

1) Environmental Protection: Conveying industrial wastewater, domestic sewage, and sludge containing solid particles and short fibers; suitable for oil-water separators, plate and frame filter presses, and other equipment.

2) Shipbuilding Industry: Conveying bilge cleaning, oil-water mixtures, oil residues, oily wastewater, and other media.

3) Petroleum Industry: Transporting crude oil-water mixtures, coalbed methane-water mixtures, and polymer injection into formations, reducing the cost of mechanical oil extraction and coalbed methane recovery while increasing oil recovery rates.

4) Daily Chemical Industry: Conveying various viscous pastes, emulsions, ointments, and cosmetic products.

5) Food and Canning Industry: Transporting various viscous starches, edible oils, honey, syrups, fruit pulps, cream, fish and meat pastes, and by-products.

6) Brewing Industry: Handling various fermented viscous slurries, distiller's grains, food residue, various sauces, pulps, and viscous liquids containing solid particles.

7) Construction Industry: Spraying and conveying cement mortar, lime slurry, coatings, and other paste-like materials.

8) Chemical Industry: Transporting various suspensions, oils, colloidal pastes, and adhesives.

9) Printing and Paper Industry: Conveying high-viscosity inks, polymer plastics, and paper pulps of various concentrations and short fiber slurries.

10) Industrial Boilers and Power Plants: Transporting coal-water slurry.

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