The CONSTMACH CVS-1640 inclined vibrating screen is the size-classification machine in a medium-capacity crushing and screening plant. It takes crusher output and separates it into graded aggregate fractions. Knowing its position in the flowsheet, its media options and its maintenance needs helps operators hold product quality and screen uptime.
Where the CVS-1640 Sits in the Plant
The screen follows a crushing stage and is fed by a belt conveyor. Through-products fall to stockpile conveyors while oversize from the lower deck is normally returned to a crusher in a closed circuit. The line sequence is feeder, crusher, conveyor, screen, with the screen setting the final gradation.
What It Handles and Deck Configurations
- The CVS-1640 handles crushed stone, gravel and sand-sized material at 100-130 t/h.
- Two decks yield three fractions, three decks yield four, and four decks yield five in a single pass.
- The 1.600 x 4.000 mm box gives 6.4 m² of screening area; actual capacity depends on mesh size, moisture and required cut accuracy.
Deck Media
- Steel woven wire mesh suits hard, abrasive material and finer cuts.
- Polyurethane panels reduce blinding and pegging and offer longer media life.
- Media is chosen by aperture, open area and feed hardness.
Maintenance
- Inspect and re-tension the screen media regularly to prevent tearing and efficiency loss.
- Lubricate the eccentric shaft bearings on schedule and monitor their temperature.
- Check the steel-lined feedbox and discharge lips for wear and replace before failure.
- Verify the support springs and that Huck-bolted joints stay tight under vibration.
Comparison With Alternatives
Compared with a static grizzly or trommel, an inclined vibrating screen gives higher accuracy and more decks in a compact footprint. Within the CONSTMACH range the CVS-1640 sits above the compact CVS-1240; for greater throughput or larger top sizes, the CVS-1650, CVS-1850 and CVS-2470 offer larger boxes and deck areas.
Installation and Commissioning
The CVS-1640 is supported on coil springs that isolate vibration from the structure and is installed at a working incline of roughly 15 to 20 degrees so material flows down the deck while the stroke stratifies the bed. At 13.500 to 14.750 kg depending on deck count, it sits on a steel support tower sized for its mass and fed by a conveyor at the top end. During commissioning the eccentric drive stroke and rotation are verified, the springs are levelled so the box runs square, and the mesh apertures are confirmed against target product sizes. Feed is brought on gradually so the bed depth and the spread across the wider 1.600 mm deck can be checked and the feed rate trimmed for clean classification.
Operating Tips for Best Results
- Use the full 1.600 mm width by spreading the feed evenly; the wide deck only delivers its capacity advantage when material is not concentrated on one side.
- Keep the load within the 100-130 t/h band so the bed stays shallow enough for fines to reach the mesh.
- Select polyurethane panels for damp or near-size feed prone to blinding steel mesh.
- Re-tension steel mesh after initial running-in to take up first-hour stretch.
- Keep discharge lips and product chutes clear so fractions do not back up onto the deck.
