The high-viscosity rotor pump, or cam rotor pump, is a type of positive displacement pump. Its core mechanism relies on the cyclic volume change of multiple fixed delivery units within the working chamber to move fluid. This design enables it to handle liquids of various consistencies, from everyday food sauces to industrial materials like asphalt and resins, covering an extremely broad range of applications.

(Bonve Pumps Cam Rotor Pumps)

Regarding its working principle, the drive gear (outer rotor) and inner rotor inside the pump rotate synchronously within an enclosed space. A crescent-shaped partition separates the suction zone from the discharge zone. As the rotors turn, a negative pressure is formed on the suction side, drawing fluid into the chamber. Subsequently, the rotors move the fluid to the discharge side, where it is expelled under pressure, completing a continuous transfer process. This ensures smooth, nearly pulsation-free fluid delivery.

In terms of main features, the pump's most notable advantage is its extremely wide viscosity handling range, spanning from tens of centipoise to 2.5 million centipoise, making it an ideal choice for transferring high-viscosity media. It typically operates at low rotational speeds, is highly efficient, offers good self-priming capability, and runs with low noise and minimal vibration. With preheating design, it can also handle high-temperature fluids. Material configuration is flexible, including stainless steel (e.g., grades 304 or 316 for corrosive or hygienic environments), cast iron (cost-effective and general-purpose), ductile iron (wear and temperature resistant), cast steel (for temperature-maintenance applications like asphalt transfer), and copper (for explosion-proof requirements). Each material is optimized for specific operating conditions, enhancing the pump's applicability.

Its advantages and disadvantages reflect its practicality. Advantages include smooth delivery, good self-priming performance, corrosion resistance (withstanding temperatures up to 200°C), minimal rotor wear leading to long service life, and linear flow rate adjustment via speed change. Disadvantages are that its operating pressure generally does not exceed 2.5 MPa, it has limitations in handling sludge with high solids content (e.g., ≥20%), and its initial cost is somewhat higher compared to other pump types like centrifugal pumps.

Proper usage methods are essential to extend pump life: the cooling water system should be activated before starting to prevent mechanical seal overheating; operation should be kept within rated pressure, flow, and viscosity limits to avoid overload; for media prone to solidification, pre-dilution or circulation cleaning with a cleaning fluid is necessary before use; filters and strainers should be inspected and cleaned regularly (e.g., monthly within the first year of installation) to prevent clogging that could hinder operation; if the pump is equipped with a temperature maintenance jacket, it should be preheated with hot water or steam to the required operating temperature before startup. The maintenance for this type of rotor pump is relatively straightforward, but attention to detail ensures reliability.

Summarizing its product characteristics, it features sanitary stainless steel in contact with the media, suitability for high-viscosity or particle-laden materials, a temperature tolerance from -30°C to 200°C, stable pressure output supporting long-distance transfer, a low-speed design (typically 100-600 rpm) that preserves the original qualities of the material without inducing physicochemical reactions, and virtually no contact between rotors resulting in minimal wear, quiet operation, and high efficiency. Overall, the high-viscosity rotor pump plays an indispensable role in industrial fluid handling with its professional and flexible design, balancing performance and durability.

Bonve pump always adheres to the philosophy of "Wholeheartedly Making Good Rotor Pumps," committed to providing global customers with customized conveying and mixing solutions. If you have technical inquiries, selection needs, case references, or other cooperation intentions related to Bonve rotor pumps, please feel free to contact us.  

Service Hotline: 0574-87588986 13586591794  

Official Website: www.bvpumps.com  

Business Email: market@bonvepumps.com  

We look forward to working with you to drive efficiency and innovation in industrial fluid transmission with precision technology.