Some of us will be thinking of going into the food manufacturing business and in view of this will need to be familiar with some of the industry terms and equipment used. In all likelihood, you may have come across the term positive displacement sanitary pump. This article will introduce you to what this piece of equipment is all about and why it is essential or used in some food manufacturing processes.
Basically a pump is used to move solutions, food products, and slurries that will be processed according to set standards of cleanliness and hygiene. These standards are either set by the private corporation or even by law. In the continental United States, the Food and Drug Administration with the US Department of Agriculture set these same standards.
Pumps in the food manufacturing arena consist of two types. The first being the centrifugal type, which uses centrifugal force to push fluids and liquids. The second type is the positive displacement type, which uses rotating lobes to create suction and move fluids and such through fixed chambers. Both are designed to eliminate bacterial growth while working.
PD, pumps, another name for these displacement pumps are not as widespread as centrifugal ones. They are however, fast gaining in popularity for special applications, which involve viscous liquids, or liquids that contain, some form of fragile solids. They are not capable of high flow rates as centrifuge mechanisms but they can produce much higher flow pressures.
As these kinds of mechanisms rely on rotating parts or lobes to create pressure based on volume, it produces less velocity when liquids are ejected into a discharge system. This is thus much more useful and needed when dealing with liquids that have some form of inert fragile solids within them.
As such there are two types of PD pumps. One is the rotary type which uses rotating parts only to move liquids. This is most useful for liquids that have some solids in them. The other type of PD pump is the reciprocating pump, which also makes use of vacuum pressure for applications that require the elimination of reverse flow. Reverse flow is of major concern especially when filtration and such are required.
A primary advantage of these kinds of mechanisms is that they provide constant flow, and thus are useful in select food manufacturing processes such as brewing or dairy production. This is because this kind of mechanism is much more efficient in moving thick liquids through manufacturing processes. Apart from breweries and dairy manufacturers, those making vegetable oils also make use of PD pumps, as well as those dealing with very thick liquid applications like molasses.
Hopefully this short article has been of some use in enlightening the reader as regards PD pumps and their use in the food industry. It is by no means an exhaustive treatise on a somewhat technical subject but hopefully it has put some of the technical jargon into simple terms as much as possible to elicit understanding.
Basically a pump is used to move solutions, food products, and slurries that will be processed according to set standards of cleanliness and hygiene. These standards are either set by the private corporation or even by law. In the continental United States, the Food and Drug Administration with the US Department of Agriculture set these same standards.
Pumps in the food manufacturing arena consist of two types. The first being the centrifugal type, which uses centrifugal force to push fluids and liquids. The second type is the positive displacement type, which uses rotating lobes to create suction and move fluids and such through fixed chambers. Both are designed to eliminate bacterial growth while working.
PD, pumps, another name for these displacement pumps are not as widespread as centrifugal ones. They are however, fast gaining in popularity for special applications, which involve viscous liquids, or liquids that contain, some form of fragile solids. They are not capable of high flow rates as centrifuge mechanisms but they can produce much higher flow pressures.
As these kinds of mechanisms rely on rotating parts or lobes to create pressure based on volume, it produces less velocity when liquids are ejected into a discharge system. This is thus much more useful and needed when dealing with liquids that have some form of inert fragile solids within them.
As such there are two types of PD pumps. One is the rotary type which uses rotating parts only to move liquids. This is most useful for liquids that have some solids in them. The other type of PD pump is the reciprocating pump, which also makes use of vacuum pressure for applications that require the elimination of reverse flow. Reverse flow is of major concern especially when filtration and such are required.
A primary advantage of these kinds of mechanisms is that they provide constant flow, and thus are useful in select food manufacturing processes such as brewing or dairy production. This is because this kind of mechanism is much more efficient in moving thick liquids through manufacturing processes. Apart from breweries and dairy manufacturers, those making vegetable oils also make use of PD pumps, as well as those dealing with very thick liquid applications like molasses.
Hopefully this short article has been of some use in enlightening the reader as regards PD pumps and their use in the food industry. It is by no means an exhaustive treatise on a somewhat technical subject but hopefully it has put some of the technical jargon into simple terms as much as possible to elicit understanding.
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