PARKER proportional valve amplifies command signal through amplifier power amplification

PARKER proportional valve amplifies command signal through amplifier power amplification

PARKER proportional valve servo valve actually has many disadvantages: high energy consumption and waste, easy to malfunction, poor anti pollution ability, expensive price, etc. The only benefit is that its dynamic performance is the highest among all hydraulic valves. With this advantage, servo valves have to be used in many situations that require high dynamic characteristics, such as servo control of aircraft rockets, turbine speed regulation, and so on. Those with lower dynamic requirements are basically dominated by proportional valves.

The working principle of PARKER proportional valve is to replace the original control part with a proportional solenoid on ordinary pressure valves, flow valves, and directional valves. It continuously and proportionally controls the pressure, flow rate, or direction of oil flow remotely according to the input electrical signal. Proportional valves generally have pressure compensation performance, and the output pressure and flow rate can be unaffected by load changes.

The working principle of PARKER proportional valve in the United States

By amplifying the signal through a proportional amplifier and proportionally outputting current to the proportional solenoid of the proportional valve, the proportional solenoid outputs force and proportionally moves the position of the valve core to control the flow rate and change the direction of the flow, thereby achieving position or speed control of the actuator. In some applications that require high precision in position or velocity, a closed-loop control system can also be formed by detecting the displacement or velocity of the actuator.

The Parker DWE/DWU series proportional pressure reducing valve is basically the same as the DWL/DWK series, except that it is adjusted using a proportional solenoid. Controlled through external electronic modules.

Parker proportional valve features:

1) It can achieve infinite adjustment of pressure and speed, avoiding the impact phenomenon of common switch type air valve reversing.

2) It can achieve remote control and program control.

3) Compared with intermittent control, the system is simplified and the components are greatly reduced.

4) Compared with hydraulic proportional valves, they have smaller volume, lighter weight, simpler structure, and lower cost, but their response speed is much slower than hydraulic systems and they are sensitive to load changes.

5) Low power consumption, minimal heat generation, and low noise.

PARKER proportional valve D41FHB31E1NE00 series
PARKER Proportional Valve D31FBE01CC1NF00 Series
PARKER D31FBE01CC1NF00 series proportional valve
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PARKER D31FBE01CC4NF00 series proportional valve
PARKER D41FHE02C1NE00 series proportional valve
PARKER D41FHE02C1NB00 series proportional valve
PARKER D41FHB32C2NB00 series proportional valve
PARKER D41FHE01E1NE00 series proportional valve
PARKER D41FHB31F2NB00 series proportional valve

PARKERElectric hydraulic proportional control valve (referred to as proportional valve) is essentially an inexpensive and pollution resistant electric hydraulic control valve. The development of proportional valves has gone through two paths. One is to replace the manual adjustment input mechanism of traditional hydraulic valves with proportional electromagnets. Based on traditional hydraulic valves, various proportional direction, pressure, and flow valves have been developed; The second is the development of some original electro-hydraulic servo valve manufacturers by reducing the design and manufacturing accuracy on the basis of electro-hydraulic servo valves.

Classification by proportional valve control method refers to the classification based on the electrical mechanical conversion mode in the pilot control valve of the proportional valve. Its electrical control part includes various forms such as proportional solenoid, torque motor, DC servo motor, etc.

PARKER proportional valve amplifies command signal through amplifier power amplification