Vacuum belt filter

Details Vacuum belt filter Vacuum belt filter

1982-08-11

1984-05-01

Sever, Frank

Liquid purification or separation

Filter

Movable medium

210783, B01D 3304

Patent

active

044460236

ABSTRACT:
In order to progress belt 10 in stepwise manner without the need for a heavy tensioning roller towards the end of return run 19, ram 58 is displaced to the left thereby moving first stepping roll 55 to its dotted line position and extending bight 59 to draw the forward end of upper run 13 into said bight 59. Movement in the opposite direction of belt 10 is prevented by a unidirectional devices, e.g. pawl and ratchet mechanisms (not shown), on rollers 53, 54. Simultaneously, second stepping roll 56 is noved to its dotted line position to correspondingly reduce the extent of bight 60, thereby permitting part of return run 19 of belt 10 to move back into upper run 13. Subsequently, ram 58 is displaced to the right to return rolls 55 and 56 to their initial positions, reduce bight 59 and extend bight 60.

REFERENCES:
patent: 3038789 (1962-06-01), Bennett et al.
patent: 3307704 (1967-03-01), Pashiaian et al.

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