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(11) | EP 0 214 419 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Apparatus for washing sand and the like |
| (57) Apparatus for washing sand and the like comprises a cylindrical body (1) having a
feed port (8) at one end and a discharge port (36) at the other end. Disposed within
the body (1) is a rotatable shaft (10) having a plurality of crush blades (15) spirally
mounted thereon and a rotary vane (16) mounted at one end near to the discharge port
(36). A pressure cap (37) mounted on a support arm (25) in opposed relationship to
the discharge port (36) is biassed towards the discharge port (36) by springs (35)
acting between the support arm (25) and the pressure cap (37) and is provided with
an assembly of detachable wear plates (41,42,43) for co-operating with the discharge
port (36). The springs (35) are adjustably mounted for varying the biassing force
acting on the pressure cap (37) and the pressure cap (37) has a feed water port (39)
for delivery of water to the body (1). |