A Progressive Cavity Pump is a type of a progressive cavity pump which has a rotor rotating within a housing called a stator. The rotor is always metallic and the stator is made up of a rubber type of material. It looks somewhat like a screw thread – the fluid is between the cavities and the rotary motion of the rotor forces the fluid through from one end to the other.
Progressing Cavity Pumps are used when a product needs to be handled gently and are used in all sectors of industries to convey almost all types of media continuously, smoothly, with low pulsation and dosing in proportion to speed. They are used for dosing applications where accuracy is required (multi stage pumps) their range covers from the smallest dosing pumps with flow rates of a few ml to high-performance pumps that pump up to 1000 m³/h.
One of the main advantages of a progressive cavity pump is that it is easy to regulate the flow of product simply by regulating the speed of the pump.
Specific designs involve the rotor of the pump being made of a steel, coated with a smooth hard surface, normally chromium, with the body made of a molded elastomer inside a metal tube body. The elastomer core of the stator forms the required complex cavities. The rotor is held against the inside surface of the stator by angled link arms, bearings (immersed in the fluid) allowing it to roll around the inner surface (un-driven). Elastomer is used for the stator to simplify the creation of the complex internal shape, created by means of casting, which also improves the quality and longevity of the seals by progressively swelling due to absorption of water and/or other common constituents of pumped fluids. Elastomer/pumped fluid compatibility will thus need to be taken into account.
Two common designs of stator are the “equal-walled” and the “unequal-walled”. The latter, having greater elastomer wall thickness at the peaks allows larger-sized solids to pass through because of its increased ability to distort under pressure. The former have a constant elastomer wall thickness and therefore exceed in most other aspects such as pressure per stage, precision, heat transfer, wear, and weight. They are more expensive due to the complex shape of the outer tube.
Parameters Main features of BN70-18L Excellent performance The design of BN70-18L pump fully considers the characteristics of fluids and can deliver various viscous substances at a stable flow rate and pressure. Whether it is a high-viscosity liquid or a mixed liquid, the pump can maintain excellent efficiency. Structural design BN70-18L pump adopts an advanced screw…
What is Seepex BN75-6L? Seepex BN75-6L is a technologically advanced screw pump designed for conveying viscous fluids and media containing solid particles. The pump uses the principle of a screw pump to push the fluid to the discharge end through a rotating screw. It has a simple structure and is easy to maintain, making it…
Parameters Brand: SEEPEX Performance: high pressure Weight: 760kg Pressure: 1.2Mpa Transport medium: industrial sewage Voltage: 380V Pump shaft position: horizontal Flow rate: 69m3/h Application: booster pump Impeller suction mode: single suction Lift: 120m Material: cast steel Drive mode: electric Working pressure: 1.2 Model: BN130-12 Seepex Brand Overview Founded in the last century, Seepex focuses on…
Parameters Design features seepex BN100-12L adopts a unique design concept, making full use of the structural characteristics of the screw pump, while ensuring stability and durability, taking into account flexibility and versatility. Its unique BN100-12L rotor and BN100-12L stator structure can ensure stable and efficient delivery of liquid media of various viscosities under various working…
Overview seepex BN70-12L adopts an advanced modular design, and uses detachable parts for quick and easy maintenance and repair. Daily maintenance can be completed without disassembling the entire pump body, greatly improving the service life and operating efficiency of the pump. The pump body is made of corrosion-resistant materials, which can not only withstand harsh…
Technical parameters Drive mode: Electric Lift: 60m Output flow: 200 Model: BN10-12 Weight: 80kg Conveying medium: Clean water pump Efficiency: 98% Material: Stainless steel Flow rate: 2.6-12 (m3/h) Pump shaft position: Horizontal Discharge diameter: DN50 (mm) Application: Metering pump Performance: Wear-resistant Number of impellers: Single stage Suction diameter: DN65 (mm) Working temperature: Normal temperature Brand:…
Technical parameters Pump shaft position: Horizontal Suction diameter: DN100 (mm) Power: 7.5kW Model: BN52-12 Conveying medium: Clean water pump Speed: 276 (rpm) Weight: 100kg Material: Cast iron Performance: Wear-resistant Lift: 60m Output flow: 200 Application: Chemical pump Drive mode: Electric Flow rate: 10-60 (m3/h) Efficiency: 98% Working temperature: Normal temperature Brand: SEEPEX Number of impellers:…
Parameters Technical features: reliable and durable The technical features of seepex BN5-12L include: Wide application areas Chemical industry: seepex BN5-12L can be used to transport various chemicals, fats, spices and other liquids. Especially suitable for fluids with high viscosity and particles. Food industry: seepex BN5-12L can be used to transport high-viscosity food raw materials such…
Parameters Key components: stator and rotor The core components of the BN2-12L pump are the stator and rotor. The BN2-12L stator is spiral-shaped and has a rubber lining inside. The BN2-12L rotor consists of two gears that rotate in the stator cavity with precision. When the pump is running, the rotor gears will bite the…
Parameters Innovative design of seepex BN26-12 seepex BN26-12 is a high-performance screw pump component designed to meet the needs of various demanding industrial applications. The component is made of high-quality wear-resistant and corrosion-resistant materials to ensure excellent performance when handling various corrosive or abrasive fluids. The core components of BN26-12 are rotor and stator. The…
