1. Application :

EFV series electric flow control valve (Combo flow control valve) is the expertise unloading equipment which avails of the most advanced oversea technology for both raw meal silos, cement depot; particularly is the best replacement of similar import equipment in sealing and discharge linear. It has a good efficiency contrast to similar imported products in the 1000t/d, 2500 t/d and 5000 t/d cement production line. The drive device of electric flow control valve is adjustable electric actuators, which is the only difference from switch valve. Electric flow control valve can adjust the open size automatically by inputting from 4 to 20 mA control signals to achieve regulatory function. Mainly play a role of flow adjustment in the transmission control system for powder, grain materials and small particles; usually it used together with gate valves.

                  

2. Product features:

1). This product has the features as following: pleasure appearance, open and close flexibly, seal tightly without leakage, the spool and the valve end are hardly worn out; low noise rate and vibration, long service life etc.

2). Drive device is adjustable import BERNAED electric actuator, which can on/off rapidly or regulates the flow with high precision.

3). EFV series electric flow control valve has a pleasing appearance, compact structure, small size, light weight, high sensitivity, non resistance, and no angle limit.

4). Spool uses high wear performance materials; the ceramic surface is to enhance the sticking property with high-density blanket, and reducing the wear to blanket; arc open outer make material flow without resistance. Spool sealed softly with quality high-density blanket. The adjustment of the seal box can be undergone externally so that to adjust the clearance of the spool and blanket for the purpose of no leakage. The blanket has a long service life, and can be replaced conveniently after worn.

 

3. Working principle ：

Electric flow control valve can on/off rapidly or regulate the flow within 4 to 20 mA signal. Input 4 mA control signals to electric actuators to make the valve full close, while input 20 mA control signals to electric actuators can make the valves full open. Within the 4 to 20 mA control signals, the electric actuator can regulate the valve at any state by inputting a certain control signals, thus realize its regulating function.

 

4.  Electric Actuator terminals wiring diagram are as follow:

  Note：

1．Input signals from 4 to 20mA

2．Input pulse signals to 35-34; 36-34 points (at this time, the  switch K5 between 39 and 34 on the map is in the manual position.)