Some of us that will be going into high volume food manufacturing will come across many different terms and equipment. One important equipment in high volume food manufacturing and processing is a positive displacement sanitary pump. This article will introduce you to what this food and manufacturing process equipment is all about.
In essence, a pump is a mechanical device that moves solutions and food products, including slurries for processing along an assembly line. It does this in a framework of set health standards. These standards are either set by outside government agencies or internally by the company itself. Agencies in the United States that set standards are the US Department of Agriculture and the Food and Drug Administration.
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, 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.
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.
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.
In essence, a pump is a mechanical device that moves solutions and food products, including slurries for processing along an assembly line. It does this in a framework of set health standards. These standards are either set by outside government agencies or internally by the company itself. Agencies in the United States that set standards are the US Department of Agriculture and the Food and Drug Administration.
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, 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.
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.
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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