Apparatus for the surface cleaning of quartz-crystal pieces
First Claim
1. An apparatus for cleaning the surface of small quartz crystal pieces comprising a trough (1) formed at least on its inside of a plastic and having an inlet (9) for introduction of pure aqueous hydrofluoric acid and an overflow (5) for removal of spent hydrofluoric acid, said trough containing therein a rotary-cylinder conveyor (2) made of plastic feeding means disposed in proximity to said overflow (5) for feeding quartz-crystal pieces into said trough (9) and discharge means (17) in proximity to said inlet of said trough (1) and said rotary-cylinder conveyor (2) being sealed relative to each other by means of a seal (10).
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Accused Products
Abstract
Apparatus for cleaning the surface of small quartz-crystal pieces with aqueous hydrofluoric acid is disclosed wherein the quartz pieces are introduced into a vessel containing a conveying means and conveyed e.g. horizontally in counter-current to aqueous hydrofluoric acid introduced at the opposed end of the vessel. During the washing the quartz pieces are tumbled.
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Citations
4 Claims
- 1. An apparatus for cleaning the surface of small quartz crystal pieces comprising a trough (1) formed at least on its inside of a plastic and having an inlet (9) for introduction of pure aqueous hydrofluoric acid and an overflow (5) for removal of spent hydrofluoric acid, said trough containing therein a rotary-cylinder conveyor (2) made of plastic feeding means disposed in proximity to said overflow (5) for feeding quartz-crystal pieces into said trough (9) and discharge means (17) in proximity to said inlet of said trough (1) and said rotary-cylinder conveyor (2) being sealed relative to each other by means of a seal (10).
Specification