Description: Control valve installed on blower inlet outlet and bypass pipelines within cornstarch pneumatic conveying lines, for regulation of air volume, air pressure and flow direction; regular maintenance required regulating type sparepart. Adjusting blade opening modifies flow path cross sectional area to tune system air volume and pressure working conditions.
Valve body: Round stainless steel shell with flange ends; smooth innerwall free of material accumulation dead spots.
Butterfly blade: Round throttling blade rotating 0–90° to alter flow cross section, core regulating element.
Valve shaft: Through shaft supporting butterfly blade; bothend bearings and sealing assemblies fitted on valve body.
Actuator assembly: Pneumatic cylinder / pneumatic actuator for automatic remote control with solenoid valve; manual worm gear for backup / smallsize units; electric actuator with positioner for closed loop PID precise regulation.
Sealing assembly: Gasket between blade and valve body securing tight shutoff performance.
Position feedback hardware: Opening indicator or limit switches delivering valve stroke status.
Air volume regulation achieved by varying the angle between butterfly blade and incoming airflow:
1. Fully open (0°): Blade runs parallel to airflow; maximum cross section, maximum air volume.
2. Throttling range (0–90°): Blade rotates to intermediate position, partially obstructing flow path to modify flow cross section and tune air volume / flow resistance.
3. Fully closed (90°): Blade perpendicular against airflow to fully shutoff pipeline passage.
4. Actuation logic: Pneumatic actuator receives control signal and turns shaft blade assembly to target angle; position feedback components output realtime stroke status.
Fine regulating performance: Near linear correlation between blade rotation angle and flow rate for good control accuracy.
Compact lightweight construction with small installation footprint.
Food grade material: 304 stainless steel valve body and blade, polished innerwall complying with food hygiene requirements.
Reliable soft seal shutoff, minimal leakage under closed state for effective airflow isolation.
Flexible operation: Pneumatic / electric remote automatic control, or local manual adjustment.
Low pressure loss under fully open state, minimal obstruction to airflow.
Service friendly: Shaft seals and gaskets are consumables replaceable online.
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