Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04B—CENTRIFUGES
  • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
  • B04B1/02—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles without inserted separating walls
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04B—CENTRIFUGES
  • B04B7/00—Elements of centrifuges
  • B04B7/08—Rotary bowls
  • B04B7/12—Inserts, e.g. armouring plates
  • B04B7/16—Sieves or filters

Definitions

• the invention relates to a centrifuge, in particular a tubular cone centrifuge, for clarifying liquids and for thickening sludge, the centrifuge drum of which consists of two drum halves and an axially displaceable tube connecting the drum halves, with the centrifugal material being fed axially.
• the invention has for its object to improve the centrifuge of the type mentioned in such a way that an increase in the solids concentration can be achieved.
• This design makes it possible to reduce the size of the drum interior during the run of the centrifuge, preferably towards the end of the treatment period, and thus to compress the centrifuged material so that clear liquid or with a very low solids concentration is released inward into the overflow or inlet can then be removed in the usual way. This increases the solids concentration in accordance with the volume reduction.
• Figure 1 shows a cross section of a tubular cone centrifuge and Figure 2 shows a cross section of a double cone centrifuge.
• the tubular cone centrifuge of Figure 1 consists of two axially separated drum halves 11, 12 which are rotatable with the displacement body 20. Both drum halves are connected by a tube 13 which is closed at one end and is axially displaceable by a double-acting hydraulic cylinder 18. The dry centrifugal material in the drum can be thrown off by axially displacing this tube 13.
• One drum half 12 is axially displaceable by a hydraulic cylinder 19 from its initial position, which it assumes when the drum of the centrifuge is filled, against the other, fixed drum half 12, so that the drum interior can be reduced.
• the centrifuged material is channeled through a channel 15
• the interior of the drum is subjected to the centrifugal force of the centrifuge, so that the solids are deposited radially on the outside and the liquid phase or clear phase over a Outlet 16 can be derived.
• a filter can be arranged on a displacement body 20 arranged in the interior of the drum, via which the clear phase reaches the outlet 16.
• the axial displacement of the drum half 12 makes it possible to compress the centrifugal material located radially on the outside, so that there is clear liquid radially inwards and the solids concentration of the centrifugal material located in the interior of the drum is thereby increased.
• the displaceable drum half 12 is expediently designed such that it closes via the displacement body 20 into the inlet opening into the centrifuge drum during the adjustment to reduce the interior of the drum, so that in the final phase of operation no centrifugal material gets into the drum.
• a sieve or filter is expediently arranged on the displacement body 20, at least in the area of the outlet, which, in addition to the filter effect, also has the purpose, after a certain operating time, of causing an increase in pressure in the inlet which can be used for control purposes of the centrifuge.
• FIG. 2 shows the application of the principle of reducing the drum interior to a double-cone centrifuge or a separator.
• the centrifuge in turn has two drum halves 11, 12 with a vertical axis, the drum half 12 being displaceable relative to the drum half 11 in order to open the centrifuge.
• the drum half 12 has a cylindrical projection 21, in which a piston 22 is slidably arranged to reduce the interior of the drum.

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• Centrifugal Separators (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6699860

Family Applications (1)

Country Status (2)

Citations (4)

• 1979
  • 1979-10-19 JP JP80500655A patent/JPS56501352A/ja active Pending
  • 1979-10-19 WO PCT/DE1979/000122 patent/WO1981001113A1/de not_active Ceased

Patent Citations (4)

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