The cam pump is a type of positive displacement pump that is widely used in various industries, including food, pharmaceutical, chemical and cosmetic. The principle of its operation is based on the movement of fluid by means of two rotating cams, which are synchronised and create volumetric changes that ensure a continuous flow of the working medium. Such pumps have a number of advantages: they are easy to operate, capable of pumping liquids with high viscosity and do not damage the structure of the pumped material.
The pump consists of a casing, two cams (rotors), drive shaft, seals and synchronising gears. The cams are specially shaped to create zones of fluid capture and movement within the pump chamber. They are often made of strong and corrosion-resistant materials (e.g. stainless steel), which ensures reliability and durability of the device even when working with aggressive or abrasive substances.
The operation of a cam pump starts with the rotation of the drive shaft, which drives the cams via synchronising gears. The cams rotate in opposite directions but do not touch each other. As they rotate, they create successive zones of expansion and contraction in the pump chamber.
Cam pumps are in demand in applications that require gentle movement and minimal impact on the structure of the liquid. In the food industry, they are used to pump products such as yoghurts, jams, creams and syrups. In the pharmaceutical industry, they are used to transfer suspensions and various drugs that require gentle handling. In the chemical industry, they are used to pump viscous liquids such as oils, resins and gels.
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