A peristaltic pump is a type of positive displacement pump used for pumping a variety of fluids.
-There is no contact between the pump and the liquid and this is a big advantage-Heavy solids can be transferred-Sealed pumping system-A peristaltic pump provides quietness and stability
Speaking of pumps, peristaltic pumps are one of the most utilized pumps. They are used a lot because they are capable of pumping so many types of fluids. Due to this reason, people purchase them frequently. If you would love to use peristaltic pumps, It’s good to know some essential things, such as how to chose a peristaltic pump, usages of a peristaltic pumps, and other key topics regarding peristaltic pumps. In this article, we want to give you a review of peristaltic pumps and include some valuable information concerning them as well.
Peristaltic pumps are one of the most utilized pumps. The tubes are always flexible and soft and the fluids flow continuously in them as the rollers rotate. The rollers in the process of their rotation, squeeze the tubes against the pump housing, which allows the circulation of the fluid to continue.As the roller continues to rotate, they press on the tubes and they expand in the process. This allows more fluid into the tubes. While this rotation is going on, one roller will close the tube at intervals, the fluids will only continue to circulate as the next roller comes in contact with the tube. The rollers have to be in constant motion and they are either rotated through a gearbox or a motor.
Peristaltic pumps are usually used to pump fluids that are vicious and hazardous. This is because the fluids aren’t exposed and only the tubes can come in direct contact with them. The rollers will squeeze the tubes and the fluids will circulate that way. Peristaltic pumps are used in various places because they are easy to maintain and their maintenance fee is cheap as well. And this is thanks to the fact that the tubes or heads can be easily replaced. After much usage, and the tubes are wearing out, you can easily attach new tubes to your pump. And this is why medical and industrial peristaltic pumps are part of the most popularly demanded pumps.Peristaltic pumps that are used in the medical sectors are used for sterile fluids processing, filtration, bioprocessing, or dialysis. In the food processing and agriculture market, peristaltic pumps are used to package foods and beverages, drugs, and other edibles. Peristaltic pumps are used for environmental purposes too. For instance Hose pumps for treating wastewater or removing condensation in gas.
Peristaltic pumps have wonderful benefits and they include;• The pump isn’t easy to contaminate. The only part of the pump that comes in direct contact with the fluid is the inside of the tube. This tube can be detached and replaced after use. The pump and areas surrounding it can also be cleaned and sterilized.• It is easy to maintain and clean peristaltic pumps. This is because they do not have additional parts like glands, valves, and seals. This makes them easier to afford because there would be no need to change or replace these additional parts• Because of the nature of the pumps, and the way the fluids are circulated in such that they are in a tube and are squeezed by the rotation of rollers, they can handle any kind of fluid. Even the hazardous and vicious ones• The pumps are designed in such a way that there is a smooth circulation of fluids • The fluids are pumped in a fixed amount because they come out one after the other as the rotation takes place.• The pumps are easy to set up and mobilize without any difficulties and need for special skills. The pumps are not so delicate and they do not require complex procedures to set up.
• Due to the flexibility of the tube, it will wear out gradually due to usage and will require a replacement.• The rotation doesn’t allow the fluid to come out at a go, therefore slowing down the process of the fluid passage. If the rotation is set to a low rotation, the fluid flow could be slower. In other words, the pump method of rotating rollers doesn’t give way to a steady flow.• The quality of the pumps can be reduced by the strength of the fluid.
Qualities of a good tube include chemical resistance at a considerable range, and for a particular period. The tube will have to resists the chemicals that are being pumped, for a particular time duration. The cost should also determine the tubing to be purchased. There are a couple of tubings that are commonly used for peristaltic pumps and they are; • Silicone rubber.This is perhaps the most common tubing used for peristaltic pumps. This is a rubber-like material made with components like silicon, along with hydrogen, oxygen, and carbon. Silicone rubbers are usually flexible and, resistant to hot temperatures and extreme conditions. Their affordability is also commendable. Due to its flexible nature, silicone rubber is used for manufacturing a vast majority of items from kitchen utensils, to tubes, etc.• Thermoplastic.This is a plastic polymer that is moldable when exposed to a high temperature of heat and solidifies when exposed to a cool temperature. Thermoplastics make good peristaltic pumps but they may start to weaken due to frequent exposure to a viscous liquid. They are used for manufacturing a lot of things, ranging from kitchen accessories to pumps.• Polyvinyl chloride (PVC)Polyvinyl chloride is produced at a very large scale as it is one of the most common synthetic plastic polymer asides from polyethylene and polypropylene. PVC can come in a rigid or flexible form. The rigid PVC form is utilized for creating objects like construction materials such as pipes, doors, or windows. While the soft version is used for objects like bottled water, disposable food packs, sheets, etc. • PharmedPharmed is another thermoplastic elastomer. It becomes flexible when exposed to certain temperatures. It can withstand certain conditions and is said to have a long duration span. This material is commonly used for creating laboratory-related materials and medical devices.• FluoropolymerThis is a polymer-based substance called fluorocarbon. It has a high resistance feature to acids, bases, or solvents. They can be considered as thermoplastics as well.• Fluoroelastomer This is a fluorocarbon made out of synthetic rubber. An essential feature of this material is that it has a high chemical resistance.Peristaltic tubes have different material components. Silicone is mostly used pumping for non-vicious fluids because it is softer and more flexible than most of the other materials. While materials like Fluoroelastomers are used when more viscous fluids need to be pumped. When it comes to selecting the right tube, there are crucial factors to look out for. While finding a tube with a longer life span is important, finding a tube with the right and accurate dimensions is as important as well. Tubes with larger inner diameters and low rotation speed have more advantages. If there needs to be an increase in the flow rate, larger inner diameters with a faster rotation speed should be selected. Whenever the pumping needs to be done at a steadier pace, the tubes should have smaller internal diameters and a high rotation speed. If the fluids are more vicious the then tubes should have thicker walls so that return to their normal shapes after the procedure. The occurrence of spallation should be avoided and prevented too. This happens when the fluid becomes contaminated when it comes in contact with particles that may be found inside the tube. Materials such as versalloy make it easy to avoid spallation.
The tube opens to its natural state with the liquid flow to the pump.It is used in many biological systems for the digestive tract. After the operation, the liquid body is transferred to the pump socket.
In conclusion, making use of a peristaltic pump is great for many instances like water treatment, medical uses, agriculture and food processing usage, etc. By using this pump you can prevent having your fluids or liquids contaminated, they are the right way to go for fluid treatment.
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