Continuous Discharge
Material fills the spaces between the rotor vanes and leaves through the lower outlet as the rotor turns.
For feed and bulk-material systems that need controlled discharge between a hopper and a pneumatic conveying line.
Bulk Material Discharge and Airlock
The OVOWELL YJD-F-DN600 reference rotary airlock valve transfers free-flowing feed granules from a hopper or vessel into the next process while helping separate the pressure conditions above and below the valve. Selection starts with the material, required flow, pressure differential, flange interface, drive and documented hazardous-area conditions.
The valve is a controlled-discharge component, not a complete conveying system. Its rotor pockets receive material by gravity, carry it through the housing and release it at the outlet while limiting direct air movement through the opening.
Material fills the spaces between the rotor vanes and leaves through the lower outlet as the rotor turns.
The closed rotor and housing help separate the pressure conditions on the inlet and outlet sides of a pneumatic conveying route.
The flange, rotation speed, motor, reducer, purge arrangement and control signals are coordinated with the upstream hopper and downstream line.
The reference configuration was developed for granular corn. Sticky, fibrous, abrasive, corrosive or easily compacted materials require a separate review.
The current DN600 configuration is based on free-flowing corn kernels. These conditions are a selection reference, not a universal material specification.
| Selection item | Reference basis | Confirm for your project |
|---|---|---|
| Material | Granular corn kernels | Material name, photos and safety data where applicable |
| Particle size | 1-10 mm | Minimum, normal and maximum particle size |
| Bulk density | 450-500 kg/m3 | Loose and operating bulk density |
| Material temperature | 30-50 degrees C | Normal and maximum temperature at the valve |
| Flow behavior | Free-flowing; non-sticky, non-abrasive and non-corrosive in the reference application | Moisture, adhesion, abrasion, corrosion and compaction tendency |
Do not select the valve from the nominal diameter alone. A material outside this reference basis can change rotor clearance, sealing, construction, drive load, speed and expected throughput.
Material enters the DN600 inlet and fills the available pockets between the rotor vanes.
Confirm hopper outlet geometry and head load.
The eight-vane closed rotor carries the material through the housing at the project-selected speed.
Material behavior determines usable filling efficiency.
Material leaves through the lower flange and enters the downstream chute or pneumatic conveying line.
Confirm outlet pressure and required flow.
The rotor, labyrinth air seal and purge arrangement help limit air movement across the valve.
Provide the actual pressure differential and purge conditions.
Final brands, marking, interfaces and construction are confirmed in the approved technical schedule for the ordered unit.
| Parameter | Available reference | Project check |
|---|---|---|
| Model | YJD-F-DN600 | Confirm valve route and interface |
| Rotor | Eight-vane U-shaped closed rotor; 172 L reference volume | Confirm material fill, required speed and discharge duty |
| Housing and rotor | HT250 cast housing and end covers; Q235 welded rotor | Confirm material compatibility and any alternative construction |
| Inlet and outlet | DN600 circular interfaces; DIN EN 1092-1 PN10 reference flange standard | Confirm mating flange, bolt pattern and installation clearance |
| Sealing, vent and purge | Labyrinth air seal and top exhaust; nitrogen purge arrangement in the reference configuration | Confirm vent route, purge gas, pressure, flow and site connection |
| Drive | ABB 5.5 kW variable-frequency motor; 380 V, 3 phase, 50 Hz; SEW reducer | Confirm supply voltage, frequency, speed control and protection |
| Installation basis | Hopper or vessel discharge into a chute or pneumatic conveying route | Confirm head load, support, maintenance clearance and approved interface drawing |
No hazardous-area certification or protection marking is claimed by this page. If the installation is classified, OVOWELL must review the formal area-classification document, material hazard data, required standard and certificate scope before a suitable mechanical and electrical package can be proposed.
Nominal throughput depends on rotor volume, speed, usable pocket filling, bulk density and a correction factor for the material and installation. OVOWELL does not assign a fixed tons-per-hour value from DN600 alone.
Particle distribution, bulk density, moisture, flowability, abrasion, corrosion and temperature affect filling and torque.
Required mass flow, upstream head load, downstream pressure, pressure differential and duty cycle affect the selected speed and drive.
State whether the valve provides continuous discharge, process isolation or adjustable feeding. A rotary valve is not a gravimetric feeder unless the complete control route is designed for that task.
Expected throughput is confirmed only after the material data and conveying conditions are checked together.
| Selection group | Information to send | Why it matters |
|---|---|---|
| Material | Name, particle-size range, bulk density, moisture, temperature and photos | Rotor, clearance, construction and filling review |
| Flow target | Normal and peak mass flow, operating hours and control objective | Speed, drive and expected throughput |
| Pressure | Positive or negative conveying, pressure above and below the valve | Airlock, seal and leakage review |
| Interface | Hopper outlet, flange standard, bolt pattern, installation drawing and available clearance | Mechanical fit and maintenance access |
| Hazardous area | Zone, dust group, temperature class, certificate requirement and purge conditions | Motor, reducer, protection and marking scope |
| Utilities and control | Voltage, frequency, VFD, interlocks, local controls and signal requirements | Drive and system integration |
The current reference configuration is based on free-flowing corn kernels with a 1-10 mm particle range, 450-500 kg/m3 bulk density and 30-50 degrees C material temperature. Other materials require a separate compatibility and capacity review.
No. DN600 defines the nominal interface size, not a guaranteed tons-per-hour capacity. Throughput must be reviewed from rotor volume, speed, filling efficiency, material bulk density and the actual conveying conditions.
No. It is a bulk-material component. The OVOWELL page focuses on feed, grain and related granular-material routes because they fit the site's poultry and farm-system scope. Final suitability depends on the material and process.
No. This page does not claim certification for the reference valve. If certification is required, send the formal area classification, atmosphere type, material hazard data, temperature limit, applicable standard and site conditions for a documented configuration review.
It can be reviewed for an existing route after the hopper outlet, mating flange, pressure differential, required flow, available clearance and downstream connection are checked.
It can provide repeatable pocket-based discharge, but it is not a gravimetric dosing system by itself. If precise mass control is required, send the accuracy target and complete control concept for review.
Send the material data, normal and peak flow, pressure above and below the valve, flange drawing, available space, voltage, control requirements and hazardous-area classification.
Review climate-control, silo-monitoring and bulk-material components by application.
Review non-contact level measurement for feed silos and bulk-material vessels.
Send the material, flow, pressure and interface information for a configuration review.
Bulk Material Route Review
Send the material name, particle size, bulk density, temperature, normal and peak flow, pressure differential, flange drawing, voltage and hazardous-area requirements. OVOWELL can review the valve configuration and system interface before quotation.
