Supply Rexroth flow control valve

 &# 8203; Flow control valve is a kind of valve that controls the flow of the throttle by changing the hydraulic resistance of the throttle under a certain pressure difference, so as to adjust the movement speed of the actuator (hydraulic cylinder or hydraulic motor)

Working principle of flow control valve: the structure of digital display flow control valve is composed of automatic valve core, manual valve core and display
The display part is composed of flow valve movement, sensor transmitter and electronic calculator display
Its work is complex
The measured water flows through the valve, and the water flow impacts the impeller in the flow movement
The rotation of the impeller is induced by the sensor transmitter, so that the sensor sends an electrical signal proportional to the flow
The flow electrical signal is sent to the electronic calculator through the wire, and the flow value is displayed after being calculated by the calculator and processed by the microprocessor
The manual valve core is used to adjust the flow and set the required flow value according to the displayed value
The automatic valve core is used to maintain the constant flow, that is, when the pipe network pressure changes, the automatic valve core will automatically open and close the valve port under the action of pressure to maintain the set flow value
The flow control valve can automatically realize the flow balance of the system without external power supply
The flow limit is realized by keeping the pressure difference before and after the orifice plate (fixed aperture) constant
Therefore, it can also be called constant flow valve
The constant flow valve acts on the flow and can lock the water flow through the valve, rather than the balance of resistance
It can solve the problem of dynamic imbalance of the system: in order to maintain the operation of single refrigerator, boiler, cooling tower and heat exchanger, it is necessary to control the flow of these equipment to be fixed at the rated value; From the end of the system, in order to avoid the interaction of dynamic regulation, it is also necessary to limit the flow at the end device or branch
Problems needing attention in design: the disadvantage of the flow control valve is that the valve has the requirement of working difference
Generally, the product requires a small working pressure difference of 20KPa
If it is installed on an unfavorable circuit,