You may be going into the food manufacturing business soon and thus you will need to know some of the needed equipment needed in such a business. And in your proposed venture you may have come across the term positive displacement sanitary pump. Read on in this article to find out what kind of equipment this is and how it works and is essential for your food production needs.
A pump is a machine or an implement that is installed to assist in the movement of slurries, food products and solutions that are in some form of needed processing. This is done in accordance with set criteria and standards of health and cleanliness which is set either by the company itself or an outside regulatory agency. In the United States, these regulatory agencies are the United States Department of Agriculture and the Food and Drug Administration.
Food processing sanitary pumps come in two types. One is a centrifugal type pump, which uses centrifugal force to pump fluids or mush right along, and the other is a positive displacement pump. The latter makes uses suction via rotating lobes in different fixed chambers. Either way, both are designed to prevent bacterial growth in the process.
PD pumps, the acronym for positive displacement types of mechanisms, produce much higher flow pressures than centrifuge mechanisms, although the latter gives much higher flow volume. Thus the PD pump is much sought after for specialist applications which involve thick liquids or liquids with fragile solids.
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.
Two types of PD pumps are currently in use in the food industry today. These are the rotary type and the reciprocating type. The former type of pump makes use of rotating parts to move liquid through. This is most useful for applications involving liquids with some form of fragile solids mixed in. Those applications needing an elimination of reverse flow processes are best serviced by the use of reciprocating type, which also has valves to create and eliminate vacuum pressure apart from moving lobes.
The sole advantage of the PD type of mechanism is that it can provide a constant flow of liquid within the range of medium to high pressure applications. This is particularly important in breweries and dairy production facilities which deal a lot with viscous liquids. Other viscous fluid applications best serviced by PD type mechanisms are found in firms that produces vegetable oils, molasses and such.
In sum it is hoped that this article has illumined a better understanding of what a PD pump is to the reader, and has lifted the shroud of mystery surrounding it somewhat. It is not an exhaustive piece as it would want to be, but hopefully this article has done its job of simplifying what may seem to be a very technical subject or topic.
A pump is a machine or an implement that is installed to assist in the movement of slurries, food products and solutions that are in some form of needed processing. This is done in accordance with set criteria and standards of health and cleanliness which is set either by the company itself or an outside regulatory agency. In the United States, these regulatory agencies are the United States Department of Agriculture and the Food and Drug Administration.
Food processing sanitary pumps come in two types. One is a centrifugal type pump, which uses centrifugal force to pump fluids or mush right along, and the other is a positive displacement pump. The latter makes uses suction via rotating lobes in different fixed chambers. Either way, both are designed to prevent bacterial growth in the process.
PD pumps, the acronym for positive displacement types of mechanisms, produce much higher flow pressures than centrifuge mechanisms, although the latter gives much higher flow volume. Thus the PD pump is much sought after for specialist applications which involve thick liquids or liquids with fragile solids.
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.
Two types of PD pumps are currently in use in the food industry today. These are the rotary type and the reciprocating type. The former type of pump makes use of rotating parts to move liquid through. This is most useful for applications involving liquids with some form of fragile solids mixed in. Those applications needing an elimination of reverse flow processes are best serviced by the use of reciprocating type, which also has valves to create and eliminate vacuum pressure apart from moving lobes.
The sole advantage of the PD type of mechanism is that it can provide a constant flow of liquid within the range of medium to high pressure applications. This is particularly important in breweries and dairy production facilities which deal a lot with viscous liquids. Other viscous fluid applications best serviced by PD type mechanisms are found in firms that produces vegetable oils, molasses and such.
In sum it is hoped that this article has illumined a better understanding of what a PD pump is to the reader, and has lifted the shroud of mystery surrounding it somewhat. It is not an exhaustive piece as it would want to be, but hopefully this article has done its job of simplifying what may seem to be a very technical subject or topic.
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