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Conveyor Belt Wash-Box Systems Part 1

Perhaps the most effective way to clean a conveyor belt is with a combination of conventional cleaners and a wash-box system.

Belt-washing systems are a proven method to remove residual material from conveyor belts in applications where environmental issues, regulatory concerns, or other issues mandate high-efficiency cleaning. The typical belt-washing system, or wash box, will contain some configuration of water-spray bars or nozzles covering the load-carrying width of the belt, followed by any of a variety of belt-cleaning devices, from scrapers to rotating brushes. Some variation of a belt-drying system, from pressure rollers to squeegee blades to forced-air nozzles, may follow. In addition, the system must include arrangements for handling the discharge of the effluent (the slurry of water and removed solids) and for the separation, recycling, and/or disposal of the water and removed material. The system will also include an enclosure, sealing components to reduce overspray, controls, and access to allow inspection and maintenance.

An insertable dust collector can be seen mounted directly in the transfer point area.
The typical belt- washing system contains water-spray bars or nozzles, belt- cleaning devices, and possibly a belt-drying system. It also includes arrangements for handling discharge of the effluent and for separation, recycling, and/or disposal of the water and removed material, along with an enclosure, sealing components, controls, and access.

The typical “wash-box” configuration is one or two spray bars for applying water followed by two or three secondary belt cleaners of a more-or-less conventional design. The wash-box system is engineered so that the adjustment of the cleaner’s angle of attack and cleaning pressure can be performed from outside the enclosure, with the operator looking in through an access door.

These cleaning elements might be conventional secondary belt cleaners or brush cleaners. Brush cleaners may be more effective in cases where the belt is significantly grooved or damaged, making cleaning by flat-edged blades difficult, if not impossible. Depending on the application, brush cleaners can also require a significant volume of water to keep the brush clean and free from the material buildup that would render it useless.


See Also: Conveyor Belt Wash-Box Systems Part 2 | Part 3.

Topics: Material Carryback & Belt Cleaning

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