MACHINE FOR DEHYDRATION OF SAPROPEL Russian patent published in 2005 - IPC

FIELD: machines reducing moisture content of sapropel; dehydration of sapropel of colloidal structure.

SUBSTANCE: proposed machine includes loading unit for delivery of sapropel under pressure, unloading unit and technological apparatus for removal of water from sapropel mass. Moisture removal technological apparatus consists of flexible flat belt closed on drive and tension drums and provided with beads on its edges; mounted rotatably above upper run of said belt are dehydrating drums which are engageable with belt; outer cylindrical surface of these drums is coated with dehydrating layer. All dehydrating drums are kinematically linked with drive drum of belt in such way that linear velocity of belt and circumferential velocities of dehydrating drums are similar. Bodies of bearings of each drum may shift in guides oriented normally to plane of belt and provided with hold-down unit. Each dehydrating drum is mounted together with squeeze roller for rotation and engagement with cylindrical surface of dehydrating drum. Hollow roller is perforated and is fitted on end of lever secured by means of hinge and spring-loaded relative to dehydrating drum guides. Inclined chute located under squeeze roller is used for removal of water; upper run of belt is supported by two rollers in area of location of each dehydrating drum embracing the drum from below; rollers are movable in longitudinal guides. Loading unit is provided with slotted proportioner for delivery of sapropel; it is located between belt beads. Dehydrating layer on each dehydrating drum is made from woven non-stretchable porous material of open capillary structure which is bonded by means of waterproof adhesive. Free ends of each backing embrace plates which are secured to flat sections of outer surface of shell of dehydrating drum. Plates are formed over arc of circle of dehydrating drum. Their edges are rounded off on side of embracing the plates. Proposed machine ensures dehydration of sapropel up to 40-50% of mass of initial pulp.

EFFECT: enhanced efficiency; reduced power requirements.

3 cl, 7 dwg