Using a pinch pneumatic valve is that they call for sterile and clean, high-precision flow control to create an easier to control pinching force.
Each valve is equipped with the stepper motor, which receives PWM square wave impulses from the controller and transforms the pulses into a stepper motor that can rotate at 1.8-degree.
The major consumption of pinch valves is in the Pharmaceutical industry.
What is a Proportional Valve Solenoid?
The electric proportional control valve can be described as a form of pinch valve which combines the characteristics and functions associated with a pinch valve with a linear stepper motor.
It’s a fantastic method to regulate fluid flow or pressure for applications that focus on cleanliness, sterility,
and non-contact to avoid cross-contamination of the environment, for example.
- Chemical Processing
- Dispensing, Filling, and Mixing
- Process Equipment
- Medical Equipment
- Life Sciences
- Food Processing
What is the Working Principle For a Pinch Valve Proportional to the Size?
The electric proportional control valve combines the benefits and advantages that a pinch valve has with an air-operated hydraulic valve.
Let’s begin by introducing the idea behind these two products.
A pinch valve functions by pressing or pinching a plastic tube with the shaft.
The solenoid pinch valves principle, air pressure, or an electric stepper motor controlls the shaft.
Pinch valve pneumatic is particularly helpful for applications that do not allow the valve to contact the liquid inside the tube,
like food products, chemical reagents, corrosion fluid…etc.
The traditional pinch valve has a fully open closure,
and the downside is that it causes the possibility of a drop in flow after the pipe is placed inside the valve,
and there is no method to control the flow rate.
Linear Stepper Motor:
A linear stepper is one type of actuator that utilizes the characteristics of a stepper motor to create linear motion.
The extent to which one can control the step distance and torque will depend upon the system used to control it and the stepper motor’s quality and performance.
Stepper motors are typically employed when a need is for an extremely high level of resolution, accuracy, and high power.
Pinch Valve and Linear Stepper Motor = Proportional
This combination offers an ideal solution for any application that requires automation on a line,
which requires clean environments and processes which require cleanliness and sterility and extremely precise increments in flow or pressure regulation.
This eliminates the requirement for high-maintenance, multiple valve assemblies, and this one valve is a small, efficient solution.
What is the Best Time to Make Use of the Electric Proportional Control Valve?
The Pressure Regulation:
The left side shows the control of the pressure inline using a pinch valve that is on/off.
The right side displays the pressure control using the air-operated hydraulic valve. Suppose you have a process line that does not permit contamination of the fluid.
In that case, it is possible to consider the use of a proportional pinch valve to regulate the pressure in the line regulated by the valve’s opening using an adjustable pinch valve.
With precise step control, pressure can be adjusted in a very high resolution.
The Flow Regulator:
The graph illustrates that an adjustable pinch valve can control the flow rate in the inline system.
The curve could shift leftward by using a greater resolution stepper motor or by adjusting the zero distance of the valve.
Using an electric proportional control valve makes it possible to easily regulate (non-contacting technique) the pressure in the line and flow rate.
This is a huge benefit to numerous industries.