German AVAC Vrkuumteknik AB pump AVAC Vrkuumteknik AB model AVAC Vrkuumteknik AB price

AVAC Vrkuumteknik AB pump consists of three parts: drive, pump head and hose. The fluid is isolated in the pump tube, the pump tube can be quickly replaced, the fluid can be reversed, it can run dry, and the low maintenance cost constitutes the main competitive advantage of the peristaltic pump.

AVAC Vrkuumteknik AB pump working principle

A peristaltic pump is like squeezing a hose filled with fluid with fingers; as the fingers slide forward, the fluid inside the tube moves forward. A peristaltic pump operates on the same principle, but uses rollers instead of fingers. It pumps fluid by alternately compressing and releasing the elastic delivery hose of the pump. Just like squeezing a hose with two fingers, negative pressure forms inside the tube as the fingers move, causing the liquid to flow. In a peristaltic pump, a "pillow"-shaped volume of fluid is formed in the section of pump tube between two rotating rollers. The volume of the "pillow" depends on the inner diameter of the pump tube and the geometric characteristics of the rotor. The flow rate depends on the product of three parameters: the speed of the pump head, the size of the "pillow", and the number of "pillows" generated per revolution of the rotor. The size of the "pillow" is generally constant (except when pumping highly viscous fluids). When comparing pumps with the same rotor diameter, a pump that generates a larger "pillow" volume delivers a larger volume of fluid per rotor revolution, but also produces greater pulsation. This is similar to the case of diaphragm valves. Conversely, a pump that generates a smaller "pillow" volume delivers a smaller volume of fluid per rotor revolution; moreover, the rapid, continuous formation of small "pillows" results in smoother fluid flow. This is similar to the operating mode of gear pumps.

AVAC Vrkuumteknik AB pump advantages

1) No contamination: The fluid only contacts the pump tube, not the pump body; 2) High precision: High repeatability and stability precision; 3) Low shear force: Ideal tool for transporting shear-sensitive and highly erosive fluids; 4) Good sealing: Has good self-priming capability, can run dry, and prevents backflow; 5) Simple maintenance: No valves or seals; 6) Bidirectional equal flow transport capability; Running dry without liquid will not damage any parts of the pump; Can generate a vacuum degree of up to 98%; Without valves, mechanical seals, and packing seal devices, there are no factors causing leakage and maintenance associated with these components; Can easily transport solid, liquid, or gas-liquid mixed phase fluids, allowing solids contained in the fluid to reach 40% of the inner diameter of the tubular element; Can transport various materials with abrasive, corrosive, and oxygen-sensitive characteristics, as well as various foods, etc.; Only the hose is a part that needs replacement, and the replacement operation is extremely simple; Except for the hose, the transported product does not come into contact with any other parts.

AVAC Vrkuumteknik AB pump application areas

Chemical industry; Mining and metallurgy industry; Paper industry; Paint and coating industry; Food industry; Ceramic industry; Petroleum industry; Water treatment industry; Pharmaceutical industry; Medical device industry. Pharmaceutical industry applications: The application of peristaltic pumps in the pharmaceutical industry is mainly used for drug coating granulation and pharmaceutical dispensing. Spray drying granulators, also known as drying granulators and fluidized bed granulators, are machines used to spray special sugar coatings on the surface of various quick-dissolving granular materials, forming granules after drying. These granulators have their own drying heat source, which can serve the purpose of evaporating moisture. However, moisture evaporation and granule formation are dynamically related, so the amount of liquid and water sprayed in must be very precise to ensure a certain humidity of the granules, thereby facilitating perfect granule formation.

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