Harp screens are typically used for screening difficult-to-screen materials, including wet and abrasive materials. The longer wires in the harp sieve are clamped to each other at a relatively considerable distance by a transverse bond, guaranteeing that the screen creates its discordant frequency in addition to screening machine vibrations, preventing the screen meshes from sticking and clogging.

Harp screens are only available with tensioning folds, which are necessary for the correct operation of the screen. The screens come with wire or polyurethane braiding to lengthen their lives and improve efficiency. We recommend ordering harp nets with mesh size 10% smaller than a wire screen with rectangular meshes.

Do you require a harp screen to sort materials high in humidity but low in flowability? Harp screens have a lot of potentials. Even with a very demanding feed, the particular shape of the wires and the way they are linked create the appearance of self-cleaning. The wires self-oscillation reduces screening.

The longitudinal wires are secured with relatively wide spacing cross supports in harp screens, whether straight or crimped. It causes every wire to get agitated, not just about the screening machine force but also the material to be screened. The increased vibrations aid in reducing the chances of pegging, blindness, or sticking.

WIRES WITH HORIZONTAL CRIMPING (SERFESTA)

The fundamental feature of the harp screen is the horizontal corrugation of the wires, which are placed and held side by side to produce a square mesh shape. They are used to screen dry and wet materials with a round, cubic, flat, or needle grain shape that is difficult to screen.

• A straight replacement for square mesh screens is provided without reducing the fineness of the screening.
• Suitable for all-grain kinds.
• The groove of the wires enables relatively fine screening even with flat and needle-shaped grains.

VERTICALLY CRIMPED WIRES (ORGANIZED)

Harp screen with a large open area and high permeability for wet, difficult-to-screen materials in round or cubic particle form. Materials that are flat and needle-shaped are not recommended. A rectangular mesh is formed by vertically crimped wires interlaced at a predetermined spacing.

• Permeability and efficiency are high.
• Suitable for screening difficult-to-screen materials.
• Screening needle and flat grain materials are not recommended.

DOSER: STRAIGHT AND HORIZONTALLY CRIMPED WIRES

Harp screens are made to screen a large amount of material. It’s made up of a triangular mesh of corrugated and straight wires that run longitudinally horizontally. Straight wires take up the tensioning force, whereas corrugated wires vibrate and self-clean. This screen design allows for a more significant amount of material to be screened. Aside from that, peculiar wire bonding has a good performance and a high screening accuracy.

• With this equipment, you can filter more significant amounts of material.
• Due to the screen’s structure, over tensioning is not possible.
• Suitable for all-grain kinds.

STRING SCREENS WITH STRAIGHT WIRES (CLEAN PURE)

A permeable harp screen with a round or cubic grain form for the screening clay and other screen materials. It is made up of straight wires joined at regular intervals by polyurethane. This screen architecture’s distinctive advantages are its large open area and high performance.

• With this machine, you can screen the clay materials.
• The combination of open space and strong performance is a winning combination.
• It is not recommended to use materials with needles or flat grains.

Conclusion

These are some of the critical points of harp screens that will aid your comprehension. I hope you have learned everything there is to know about the product.