Peristaltic Pump – An Efficient Pumping Device To Avoid Cross-Contamination During Operation
Peristalsis is one kind of biological criteria, which executes the muscle contractions for moving foods to the specific parts of the digestive systems.
And the pump, which works based on peristaltic principles to get the advantages of positive displacement force, is known as a peristaltic pump.
What Is The Core Working Principle of Peristaltic Pump?
This type of pump works in an efficient way using the technique of positive displacement.
The core mechanism of a peristaltic pump has great similarity with a hose pump.
The efficient rollers supply the fluid through the tubing.
During rotation, the rollers squeeze the expandable tube in the opposite direction of the pump housing.
While the roller starts to move against the tubing, it generates a vacuum through expansion and lets the fluid make an easy entry.
In its operation mode, a single roller shuts up the tubing.
Thus, it does not require any valve. The rollers turn with direct force, sometimes by a motor or any gearbox.
For the operation with viscose or corrosive fluids, a peristaltic pump provides durable performance.
Because only the tubing portion comes into contact with fluids, and the suction head or tubing can be replaced easily.
So, this particular pump mechanism provides ideal performance with less maintenance.
All reputed manufacturers of peristaltic pumps provide eight standard-size pumps, which can flow at an efficient rate from 0.1 ml/min to 2000 ml/min.
The manufacturers fix the pump equipment based on the compatibility between different types of tube materials and pump media.
All the available sizes of this type of pump have self-priming integration.
What Specific Equipment Boosts The Performance of Peristaltic Pump?
❖ Specific Motors Requirement
While this pump works based on the ideal mechanism without any gearbox; the variable speed of the motor controls the flow.
Among common types of motor peristaltic pumps requires brushed DC, brushless DC, AC etc. The basic speed of the motor of this type of pump varies between 0 to 400 revolutions every minute.
Generally, both DC and BLDC motors work together involving a gearbox to fix the speed as per the flow requirement.
If you need to regulate the speed of the Stepper motor, you can use an external controller board.
The relation between motor speed and flow rate remains proportional.
This calculated mechanism drives the whole pump equipment to dispense and measure the applications.
Few considerable aspects you need to keep in mind to select the right motor.
You can use a DC motor, which is efficient to run operations up to 4000 hours. But you can face limitation issues sometimes for two factors – bearings and brush systems.
With an AC motor, you will get a durable lifetime, ranging from 1000 hours to 10,000 hours.
In terms of the Brushless DC motor and stepper performance, the bearing factor only can be the limitation issue.
With the stepper motor and BLDC, you will get an easy scope to adjust the speed.
It would help if you had these types of the motor only, while the operation has to depend on the variable rate of flow.
❖ Tubing Requirements
The available materials for peristaltic tubing can vary from PVC or Thermoplastic Vulcanizate to Fluoroelastomeric.
While any non-aggressive media requires to be operated, the manufacturers use silicone for the specific peristaltic pump models.
Silicone is one of the softer options than other materials.
TPV has flexible tolerance for crucial applications in the case of elastomeric properties. In cases of more corrosive media type, the manufacturers need to use specific material like Fluoroelastomeric such as Viton.
Now, you need to know how to select the right tubing as per your applications.
Always keep in mind the dimensions of tubing matters a lot.
While you need maximum durability, you should select a tube having a large internal diameter.
And along with this design, a low-speed motor will work the best.
Similarly, high rates of flow require large internal diameter-based tubing along with high motor speed.
You have to ensure the pump tubing has a thick wall in viscous liquid cases to ensure instant recovery.
During this type of operation, the particles can lean to the circle of the fluid. This process is known as spallation.
But in the specific applications of the medical or pharmaceutical industry, you need to avoid appellation.
You can opt for specific TPV materials like Versalloy, which causes the optimization of properties to reduce spallation.
What Things Should You Consider To Buy Peristaltic Pumps?
Let’s look at what aspects should be checked out before installing a peristaltic pump.
❖ To minimize the pulsation process, most of the peristaltic pump integrates a spring-loaded mechanism to execute the smooth action of pumping.
So, while you plan to deal with shear-sensitive liquid, you must check about this particular mechanism during the installation of the peristaltic pump.
❖ Another significant aspect you should consider is tube dimensions. The adjustment of flow rate depends on the different tube dimensions.
❖ The standard models of peristaltic pumps have the integration of adjustable occlusion.
So, these particular criteria help you play a vital role in controlling the fluid system’s pressure level.
❖ The selection of tubing materials also has a vital role in outstanding performances. As per the sensitivity level, you should opt for softer tubing materials.
Otherwise, for rugged operations, chemical property based materials like fluoroelastomers are required.
❖ The flexibility of applications makes peristaltic pumps popular in the industries. You can replace the pump head or tubing within a short timeframe.
The advantages of specific design make the internal valves efficient to complete the operation properly.
❖ With the outstanding integration of this pump, you can operate the pumping unit clockwise or anti-clockwise.
So, the perfect mechanism of this pump can transfer fluids into both directions as per requirement.
❖ If you opt for a multi-channel-based peristaltic pump, you can boost the overall efficiency level of the whole pumping unit.
Because this type of pump drives a single motor, one pump head can organize channels along with separate tubes for each.
All these considerations ensure the perfect monitoring of sensitive emissions.
And based on these particular specifications, you will execute the best fluid handling mechanisms, which can control the switch in and switch off of the medium after every process cycle.
Now, all the specifications show how the particular mechanisms of peristaltic pumps perform best in different conditions.
Therefore, you will understand why industries like detergent dispensers, industrial dishwashers require this pump technology for specific applications.