FI75335C - FOERFARANDE OCH ANORDNING FOER AVLAEGSNING AV MASSA FRAON KOMPOSTOR. - Google Patents

Description

75335

Method and apparatus for removing pulp from a composter

The invention relates to a method for removing pulp from a continuous composter fed with manure, straw, grass or other aerobically decomposable pulp, which typically leaves the composter after a few days of treatment and is transferred to an afterburner pile.

The composter is typically used for manure treatment, firstly making it almost odorless and avoiding fly nuisance. The treatment kills weeds and pathogen bacteria. In addition, composted manure stores nutrients and gives them to plants in good form. Typical applications of the composter in addition to the maturation of livestock farming are residential, greenhouse, garden and fur garden waste handlers.

After the actual composter treatment, the pulp is stored in a pile-up or post-ripening pile, where preferably the pulp still decomposes. Post-combustion saves the volume of the composter itself, but according to the prior art, the post-combustion heap must be inside to prevent cooling. Afterburning may also have been abandoned at the expense of pulp quality. According to the prior art, the pulp is removed from the composter, for example by a bed conveyor. The problem with these has been, in particular, freezing during periods of frost, in which case they have become clogged as a result.

The object of the present invention is to provide a new type of pulp removal method by which afterburning and storage can be carried out without a warm storage space. The main features of the invention are set out in claim 1 30 and the features of the preferred device implementing the method in claim 2, which avoids e.g. from the freezing problems mentioned above. According to the invention, since the afterburner heap is filled from the outside, it itself forms a thermal insulator which allows the temperature required for post-ripening to be maintained in the middle of the heap, even in winter conditions outside the heap. In this respect, it is also important that the removal takes place by compression, whereby the density of the mass to be removed increases and the pile becomes more easily insulating.

2 75335

The invention will now be illustrated by reference to the accompanying drawings, which show an embodiment of the invention.

5 Figure 1 shows a top view of the composter system Figure 2 shows a general arrangement of the pulp transfer devices seen from the side

Figure 3 shows the pulp transfer device in detail. The figures show an apparatus typically used for livestock manure maturation. The manure is fed by a screw conveyor 2 to a continuous composter 1, which consists mainly of a rotating drum, in which, after a few days of treatment, the manure changes to a better shape in a known manner, Fig. 1.

o

The mass typically reaches about 50 ° C during processing

temperature. There is no need to cool the pulp to allow afterburning. The treated pulp is removed from one end of the composter 1 by a discharge device 4 which drops it into the feed opening 8 of the transfer device 6. The transfer device 6 periodically pushes the pulp accumulated in the feed opening 20 into the transfer channel 3, Fig. 2. The discharge head 7 is extended and closed. The post-pile pile 5 is then formed on the discharge head 7. In severe frosts, the pile 5 becomes high and again in warm air it becomes flat. In cold weather, the afterburner pile 5 comes; 25 be so large that it itself forms a thermal insulator for the new mass in the middle. For this reason, it is not necessary to remove the finished mass from the pile until spring.

Since the actual transfer device 6 is in a heated state and, on the other hand, the discharge end 7 of the transfer channel 3 is protected under the pile 5, freezing problems are completely avoided.

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Claims (2)

3,75335 A method for removing pulp from a continuous composter (1) fed with manure, straw, grass or other aerobically digestible pulp, which leaves the composter (1) typically after a few days of treatment and is transferred to a storage and / or afterburner pile (5) , characterized in that the mass leaving the composter (1) is pressed under the storage-10 and / or post-combustion pile (5), i.e. the storage and / or post-combustion pile is filled from below. Apparatus for carrying out the method according to claim 1, comprising a pulp transfer channel (3) 15 and a transfer device (6), the feed opening (8) of which is arranged below the discharge opening of the discharge device (4) of the composter (1), characterized in 3) forms a tube, the discharge end (7) of which is placed substantially on the surface of the substrate reserved for the storage and / or afterburner (5), and that the transfer device (6) is formed mainly by an elongate piston (9) fitted to the transfer channel (3); and an actuator driving it, for example a hydraulic cylinder (10).