The devices that can regulate the flow rate of a fluid with an electronic signal are the electronic flow regulators or electronic flow valves. Digital water flow regulators are used to control liquid flow rates, whereas electronic airflow control valves are often used to manage gas pressure by regulating the speed of air motors and cylinders. An electronic pneumatic flow control valve paired with a digital flow meter for closed-loop control provides users with a digital reading of the liquid or gas flow rate. This allows them to anticipate the precise amount of flow. The digital flow control valve also serves as a flow regulator.
The electronic water flows control valve controls the flow of fluid in a variety of heavy industrial industries using power. The users of the automatic water flow control valve can obtain an automated digital measurement of the amount of liquid flow. A linear relationship between the output flow rate and the input signal is ideal.
In this post, we’ll introduce you to the electric flow control valves. We’ll start by describing the types of pneumatic flow control valves we provide, then go on to the operation and key benefits of digital flow control valves, before concluding with some considerations you should make before making a purchase.
Major Types of Electric Flow Control Valves:
The following are the major kinds of electric valves used for pressure and fluid control purposes:
For powering up and controlling, all four variants include the same control driver. Both analogue and digital signals may be input into the digital flow controller. Additionally, an encoder option guarantees that the stepper motor will move to the desired location. A customized solution is an option that can include features like a stainless steel body and moist material or a voltage range of 0 to 10 volts.
These valves also provide you with the choice of calibrating the torque, speed, and control range of the moving needle. With electric flow control valve, you have a lot of freedom in doing what you can do, which aids in solving complex and one-of-a-kind problems.
Working of Electronic Flow Valve:
Different kinds of electrical flow controllers exist. Here, we’ll go through the model that makes use of a volumetric needle valve and a linear stepper motor actuator.
Brushless DC motors or stepper motors spin in predetermined increments. The lead screw, step angle, and controlling electronics all affect the steps. The stator assembly contains electromagnets that are arranged in a ring to supply electric current to the driver. The stepper motor’s mechanical design minimizes mechanical and electrical delays, which is a common issue with other types of motors.
A stepper motor has several advantages over other types of motors, including movement precision, resolution, and responsiveness. Stepper motors are frequently utilized in motion systems, automation, and 3D printers.
The Linear Actuator:
A stepper motor may have a slotted shaft connected to its spinning core that may be used to axially move an object by pushing or pulling a nut (needle valve) that is put on it. The accuracy of the flow control valve is controlled by the thread pitch, which is also determined by the step angle of the stepper motor in use. A stepper linear actuator is susceptible to backlash which is characterized as the greatest distance or angle through which any mechanical element may be manipulated in one direction without causing the following part to move or resist in any way.
When the direction of the movement is altered while there is clearance between the threads, a dead zone occurs. The linear actuator won’t move while changing direction until the space between the threads is closed. It is advised that the threads have a tolerance that is as little as feasible because of this. The functionality of the valve depends critically on the mechanical design of the stepper motor-driven actuation mechanism.
A Flow Control Valve With An Electronic Stepper Motor?
Here, the distance between the valve seat and needle is managed by a stepper motor. How effectively the needles are moved affects the flow regulating valve’s performance metrics, including resolution, precision, and repeatability. The stepper motor’s properties mostly determine other factors including velocity, torque, and operating pressure.
Buying Electric Flow Control Valve? – Consider the Following Things:
Whenever you are about to purchase a new valve, you must consider the following things in your mind:
Includes medium, flow range, valve material compatibility, and operating pressure.
The resolution, the beginning of the flow, and linearity.
It is crucial to know if the media you employed falls within the operational valve’s flow range. The flow range would differ from the nominal flow range because the densities of each medium vary. The next question is whether the medium being used is compatible with the wet material and whether a particular material body is also required. Another caution is that the operating pressure may not always be a significant effect if all you require is flow control.
Advantages of Electric Flow Control Valve:
- Materials with minimal dead space and building techniques that are especially suited for culinary applications
- Minimal hysteresis
- Quick connection and control
Wrapping It Up:
High pressure flow control valves are one of the most widely used equipment in industrial manufacturing for serving the purpose of pressure control. Whenever there is an error introduced in the valve, it is a must to recall the facts and figures explained aforementioned to buy a new valve.