Proportional Valve
Jinan Chaoqian Machinery Technology Co., Ltd. was established in 2019, located in Jinan, Shandong Province. Since its establishment, the company has focused on laser industrial applications，we are committed to the sales and service of laser accessories, pneumatic components and other mechanical accessories.
Why Choose Us
Development Concept
The development concept is user-centered, product- and service-oriented, aimed at saving costs for customers, providing considerate and high-quality services, and ensuring customers feel more reassured.
Production Capacity
Since its establishment, the company has focused on laser industrial applications. We are committed to the sales and service of laser accessories, pneumatic components, and other mechanical accessories.
Product Features
Our products feature multiple fiber interfaces, such as QBH and QCS, and can be adapted to various mainstream lasers.
Aventics Proportional Valve
It is common in closed-loop control systems where the output must be maintained as close as possible to the desired setpoint. Proportional control is a type of feedback control in which the desired control, also known as the setpoint (SP), is compared with the actual output.
Japan SMC Proportional Valve
Our products are electromechanical devices used to control the flow or pressure of fluid in hydraulic and pneumatic systems. Japan SMC Proportional Valve can also provide refined pressure regulation according to system requirements and is suitable for multiple systems such as hydraulic, pneumatic, and electronic control.
Advantages of Proportional Valve
Precise regulation
Proportional valves are designed to monitor the systems' flow and pressure rate. They can easily adapt to many different contexts as they can be fine-tuned at any time in order to align with specific needs. Unlike solenoid valves, proportional valves can be adjusted as they allow more control over the system's regulation processes.
Energy optimization
One of the main advantages of a proportional valve is a significant increase in energy efficiency. As a matter of fact, these systems need less manual operations to adjust flow and pressure rates, resulting not just in an economic benefit, but also in a sustainable optimizationof energy consumption.
Versatility
Proportional valves can adapt to many different contexts and applications - from industrial automation to Food&Beverage and delicate medical systems. They can also manage a variety of fluids and pressure rates, ensuring excellent performances in every field they may be applied to.
Enhanced safety
Accuracy and constant monitoring mean improved safety. In fact, these systems prevent sudden fluctuations that can lead to operational shifts and malfunctions.
Proportional valves are particularly suitable for applications where the output pressure or flow needs to be changed, whether in one process or from one process to the next. They are reliable, cost-effective, and provide quick response and consistent control. Proportional valves can help reduce the number of cycles and quickly achieve stable pressure or flow.
Examples of typical applications are:
Bottle filling-the proportional valve maintains a constant pressure in the filling reservoir regardless of the liquid level. The pressure sensor in the reservoir provides feedback to the proportional valve, ensuring that a constant volume of liquid is delivered to the bottle within a given time.
Furnace control-the gas supply is regulated by a proportional valve; when the required temperature is reached, the differential temperature signal is used as feedback to shut off the air flow.
Leak test-proportional valve can apply increasing pressure on a given test piece on a specified profile.
The Difference Between Proportional vs. Directional vs. Servo Valves
Directional Control Valves
Directional control valves have been commonly referred to as switching valves because they simply direct or “switch” fluid passing through the valve from the source of flow to one of a selection of available cylinder ports. The flow control variety of valve generally selects an orifice which only allows a specified volume of flow to pass. The specified volume controls the speed of a cylinder or hydraulic motor. Likewise, the pressure control type is used to select a particular pressure setting.
Changing direction, flow or pressure during machine operation with these valves would require a separate individual valve for each direction, flow or pressure desired. The hydraulic circuit would become quite complex very quickly!
Proportional Valves
The technological solution to these more complex circuits has been the development of proportional valves. These revolutionary valves allow infinite positioning of spools, thus providing infinitely adjustable flow volumes. Either stroke-controlled or force-controlled solenoids are used to achieve the infinite positioning of spools.
This variable positioning allows spools to be designed with metering notches to provide flow/speed control as well as directional control functions all in one valve, instead of requiring separate valves for direction and speed. The other major benefit is when the circuit requires more than one speed. The various speeds are achieved by changing the electrical signal level to deliver the flow/speed required. No additional hydraulic components are required! These proportional directional valves are controlled by DC power.
The proportional controls, used with their associated electronic controls, also add the desirable features of acceleration and deceleration. This offers a variety of machine cycles, safely operated at greater speeds, yet with controlled start and stop characteristics. Regulated acceleration and deceleration result in improved machine overall cycle times and production rates.
Servo Valves
The third type of hydraulic directional control technology is the servo valve. Servo valves are not a new technology as servo valves were first used in the 1940s. Servo valves operate with very high accuracy, very high repeatability, very low hysteresis, and very high frequency response. Servo valves are used in conjunction with more sophisticated electronics and closed loop systems. As a result, servo valves are always much more expensive. A proportional control valve system can be used to improve control of most machines without the high price tag of servo control systems.
FAQ
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