One of the most common operations in the food industry is to use a vacuum pump system to move a liquid or solid from one location or processing step to another. The main part of pump transportation is pipeline system and vacuum pump. The type of vacuum pump is very different, and the principle is not the same. The choice should be based on the characteristics of the material to be transported.
The most commonly used is gear pump, no matter what kind of vacuum pump, because the rotor rotates in the pump chamber, resulting in pressure difference, sucking food into the pump chamber and constantly extruding it. Obviously, a closed working chamber must be formed between the gear of the pump and the pump chamber. Although these pumps are also used to transfer liquids and slurries, and sometimes can also transport small pieces of material, but it is possible to crush materials.
Single helix pumps may be ideal devices for conveying bulk materials but not being crushed. This kind of pump is also called the propelling hole pump, which can form a continuous spiral space between the spiral rotor and the outer wall. When the rotor rotates, the food can be pushed into the same size space by using the helical slope. Therefore, no food, such as corn, grapes or even shrimps, will be destroyed.
No matter which type of vacuum pump is selected, it must be noted that it must be easily disassembled and thoroughly cleaned. Nowadays, stainless steel sanitary pumps are easy to be disassembled in a few minutes with simple tools.
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