Popularly known as the piano wire screen, the harp screen is made using a single front of the highly tensioned wires. The wires are connected at both the ends of the harp screen and have a metal hook. The harp screen is designed such that the long wires are tightly clutched to each other at a considerable distance by a transverse band. This process helps ensure that along with the vibrations of the screening device, even the screen is producing its dissonant frequency. This helps in avoiding the clogging and plugging of screen meshes.

The key factor in harp screens is the wires that are either straight or crimped are guarded with some wide space cross supports. This helps every wire to get excited because of the material to be screened and due to the force of the screening machine. The additional vibrations caused during the process help in working against the risk of sticking, blinding, or pegging.

Harp screen is a screen panel that is recommended for materials that are challenging to be screened and those who stick or blind that conventional wire, especially to materials having wedge shape and that is moist.

Isevier Harp

Isevier harp has crimped screen wires. The wires are arranged one after another, thus forming square meshes. To achieve stability for the screen, the crimped wires are linked at particular spacing by wires or PU bindings.

Alternate Name: Serpa-Flex-Harps

Material: Stainless steel, spring steel

Cross connections: ss or spring steel, PU

Application Temperature: maximum 800 C

Max width of the screen: 2500 mm

Iseveno Harp

Iseveno harp has an alternate arrangement of crimped and straight wires. This arrangement is crimped horizontally to the screen level. A triangular screen opening is formed by these crimps of wire and the straight wire. The wires are then placed at a particular spacing by cross binding made using plastic bindings. However, depending on the requirement, the distance of separation can be adjusted.

Alternate Name: Veno-Flex-Harps

Material: Stainless steel, spring steel

Cross connections: ss or spring steel, PU

Application Temperature: maximum 800 C

Max width of the screen: 2500 mm

N-Harps

N-harps are produced using crimped as well as smooth longitudinal wires. These wires are fixed at a particular distance through PU bindings or wires building by these long screen openings.

Alternate Name: Harpa-Flex-Harps

Material: Stainless steel, spring steel

Cross connections: ss or spring steel, PU

Application Temperature: maximum 800 C

Max width of the screen: 2500 mm

Advantages of Harp Screens

  • High efficiency
  • Progress in productivity using cross harps. It increases tonnes per hour for each sqft of screen space than any other screen surface.
  • Screening of damp and stick materials is made possible by harp screens where screening with a woven product would be difficult.
  • Harp screen allows screening at smaller gaps than would otherwise be possible.
  • Screening of hard-to-screen materials
  • Self-cleaning effect

Application field of Harp Screens

  • Sandpits
  • Quarries
  • Gravel Pits
  • Mines
  • Recycling
  • Asphalt production

Wrap Up

Screening even the finest and challenging materials is possible using a harp screen. They are exclusively supplied with tensioning folds. Harp screens are needed for the correct operation of the screen. The screen is also provided with polyurethane wire or braids, which helps in improving the efficiency of the screen and improves its lifetime. Harp screen provides maximum performance under every circumstance.

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