Single strands of highly tensioned straight wires are used to make a harp screen, also known as a piano wire screen. These wires have a sheet metal hook attached at both ends of the screen. The longer wires are clasped securely at a relatively considerable distance by a transverse connection in the harp screen’s construction. This method ensures that the screen produces its discordant frequency in addition to the vibrations of the screening equipment. It prevents the screen meshes from clogging and adhering together.
Whether straight or crimped, the longitudinal wires are secured with relatively wide spacing cross supports in harp screens. It causes every wire to be agitated, not just using a screening machine but also by the material to be screened. The increased vibrations aid to reduce the chances of pegging, blindness, or sticking.
Harp screens are commonly used to screen difficult-to-screen materials, such as wet or abrasive materials. The longer wires in the harp sieve are connected by a transverse link at a relatively great distance, ensuring that the screen generates its discordant frequency independent of the screening machine vibrations, preventing the screen meshes from sticking and clogging.
Harp screens can only be ordered with tensioning folds required for proper screen operation. Wire or polyurethane braiding is used to extend the life of the screens and improve their efficiency. We propose that you order harp nets with a mesh size that is 10% smaller than a wire screen with rectangular meshes.
Harp screens, for example, are advised for materials that are difficult to screen and tend to blind or stick the standard wire, particularly wedge-shaped materials and damp materials.
ISEVENO HARP:
The Iseveno harp comprises crimped and straight wires that are alternately organised and crimped horizontally to the screen level. Crimped and straight wires from the triangular screen apertures. The wires are then cross-bound using plastic bindings to keep them at a specific spacing. Depending on the situation, the separation distance can be adjusted.
HARP ISEVIER:
The Isevier harp is made up of square meshes of crimped screen wires stacked one after the other. To achieve screen stability, the crimped longitudinal wires are joined at a specific spacing by PU bindings or wires.
N-HARPS:
Crimped and smooth longitudinal wires are used to make N-harps. These wires are fixed at a specific distance through PU bindings or wires built by these long screen apertures.
ADVANTAGES OF HARP SCREENS:
- Using cross harps, you can increase your productivity. It produces more tonnes per hour per square foot of screen than any other screen surface.
- Harp screens enable screening at narrower gaps than would be achievable otherwise.
- Harp screens allow for screening of moist and stuck materials that would be difficult to screen with a woven product.
- High productivity.
- Effect of self-cleaning
- Materials that are difficult to screen are screened.
Harp Screen Applications:
- Pits of Gravel
- Quarries
- Sandpits
- Mines
- Production of asphalt
- Recycling
Aharp screen can be used to screen tough and delicate materials. The harp screens come with tensioning folds as standard. They are required for the screen to function correctly. Polyurethane braids or wires are also included with the screen, which helps to improve its efficiency and lifespan. Harp screens are designed to give the best possible performance in any situation.