In the field of precise industrial fluid delivery, rotary pumps have become a core power source in numerous demanding processes due to their unique working principle and exceptional stability. This rotary positive displacement pump ingeniously utilizes the periodic engagement and separation of internal precision rotating elements to continuously alter the volume of sealed chambers, thereby achieving stable extrusion and directional pushing of fluids, with its core essence being: regardless of fluctuations in outlet pressure, its output flow rate remains constant.
(Bonve Pumps Rotary Pump Working Principle)
The core of the rotary pump lies in a pair (or a set) of precisely calculated, strictly synchronized counter-rotating rotors. When they operate at high speed:
At the inlet: The rotor teeth or helical surfaces rapidly separate, instantly forming a partial vacuum (low-pressure zone) in the pump chamber inlet area. This powerful "suction force" continuously "pulls" fluid into the pump from the suction line.
During transport: The rotating rotors cooperate with the sturdy pump casing to accurately "capture" and seal the sucked fluid into independent small chambers formed by the rotor profile and the pump casing.
Pushing to the outlet: As the rotors continue to rotate, these fluid-filled chambers move steadily along the pump casing wall from the inlet to the outlet. When the chambers reach the outlet area, the engagement of the rotors or the closure of the helical surfaces gradually compresses the chamber volume, smoothly and continuously "pushing" the fluid out of the pump body into the higher-pressure discharge line. This suction-discharge process seamlessly connects in the cyclic rotation of the rotors, achieving continuous, minimal-pulsation, and stable fluid delivery.
Performance Advantages: Stability, Flexibility, and Cleanliness
Thanks to its unique positive displacement working principle, the rotary pump exhibits reliable characteristics:
Stable flow: Its output flow mainly depends on the rotor speed and the fluid volume discharged per rotation cycle. This means that as long as the speed is constant, regardless of whether the outlet line pressure (back pressure) rises or falls, the liquid volume pumped out is almost unaffected, providing reliable assurance for processes requiring precise metering.
Wide media adaptability: Theoretically, it can handle complex fluids ranging from thin as water to viscous as honey (Bonve Pumps rotary pumps can handle up to 2,500,000 cP viscosity), even those containing fine solid particles. Of course, in practical applications, pump body materials and sealing technologies define its boundaries, but the range of materials it can convey far exceeds that of many other pump types.
Strong self-priming capability: When a liquid film forms in advance on the rotor surface, it can demonstrate powerful self-priming ability, easily meeting certain suction lift requirements.
(Bonve Pumps Pressure Rotor Nut Comparison)
Clean and convenient: The precision streamlined rotor design, combined with a smooth pump chamber and pressure rotor nut design (no "dead zones" for fluid stagnation), and the option to manufacture with sanitary-grade materials (such as stainless steel), make it an ideal choice for industries with extremely high hygiene requirements like food, pharmaceuticals, and cosmetics, and it also handles corrosive media.
Broad Stage
The excellent characteristics of the rotary pump make it active in numerous key fields: milk, jam, chocolate syrup in food and beverage production lines; creams and serums in cosmetics; medicinal liquids and extracts in the pharmaceutical industry; dyes, detergents, and viscous resins in chemical plants... Whether it's liquid essences, paste-like thick substances, or complex mixtures carrying fine bubbles or solid particles, the rotary pump provides stable and efficient delivery power.
(Bonve Pumps Rotary Pump Selection Guide)
Selection Requirements
When selecting a rotary pump, it is necessary to comprehensively consider: the flow rate of the material, the viscosity of the fluid and its variation range, the required outlet pressure of the system, the suction conditions of the pump, and whether the fluid is corrosive or high-temperature, among other factors. Only by accurately matching these elements can the rotary pump perform its most stable and efficient role in various processes.
The rotary pump, precisely through its rotational precision, achieves constant fluid motion, playing an irreplaceable role in the industrial pulse.
Bonve will always uphold the philosophy of "wholeheartedly making excellent rotary pumps," committed to providing global customers with customized delivery and mixing solutions. If you have subsequent technical inquiries, selection needs, case references, or other cooperation intentions regarding Bonve rotary pumps, feel free to contact us anytime. Service hotline: 0574-87588986 13586591794 Official website: www.bvpumps.com Business email: market@bonvepumps.com Looking forward to collaborating with you to drive efficiency and innovation in industrial fluid transmission with precision technology.
