DE10338844A1 - Hot air sludge dryer, includes series of stacked discs with central axis assembly and sludge distributors fitted to outer ring - Google Patents

Abstract

A disc (1) with centered drive axial core (7) includes an axial casing (14) which connects with the corresponding part of the next plane, forming the drive axis (16). A sludge distributor (4) fitted to an associated outer ring (2), completes a segment. Individual segments are stacked, forming the sludge dryer. A slot opening (6) in the disc extends from its center to the edge. The sludge is dropped through this to the next lower plane, where it is carried on. The central drive axis has a casing (14) connecting to the next plane of the drive axis (16). On each outer ring, a unit segment is fitted, suitable for distribution of sludge on the disc, and its transfer to the next lower plane. On each outer ring of a segment, air inlet and outlets are fitted. For distribution and transport of the sludge, a motor is connected to the drive axis.

Description

According to the invention Mud dryer built in such a way that it is modular from individual identical Consists of segments arranged one above the other are. The single segment consists of one around its center rotating round disc and an outer ring with a distributor for the Mud, which form the drying room. By this construction according to the invention are, adapted to the processing conditions, any number of drying spaces on top of each other arranged.

The Disc has a slot that is approximately from the center of the disc almost to the outer edge goes. The rotational movement is by a vertically attached to the disc plane Axis transmitted from a motor.

Of the Sludge applied to the disc is passed through a distributor and the rotation of the disc on the whole surface in one thin Layer distributed. The distributor is at the disc surrounded ring, which at the same time the outer boundary of the drying room of a segment attached. By turning the disc deletes the distributor over the entire area the circular disk. In the preferred embodiment is by the rotational movement newly applied sludge with the already existing mixed and excess sludge passes through the slot of the disc on the underlying Level. Possible is also the installation of a clearing device, preferably in the shape of a scraper that loosens the mud and one by the speed of rotation the disc specific residence time of the mud in a plane again from the surface remove it and put it through a slot on the underlying level promoted on which the process repeats itself. In this way, the mud is over several Levels led, whereby he gradually loses more and more water.

The needed for drying warm air is over an inlet in the ring as possible blown tangentially into the drying room and through an opening that parallel to the inlet tangent on the other side of the ring, discharged again.

The Slots of the round discs of each level are offset in this way arranged that one as possible long residence time for ensures the mud becomes.

The one above the other lying individual segments are preferably by threaded rods connected with each other. The threaded rods are on the upper lid and the bottom plate of the dryer screwed and press the individual Segments together.

following the invention is based on a preferred illustrated in the drawing embodiment further explained. In detail, the schematic representations show:

1 : 1 shows the schematic sketch of the round drying disc.

2 : 2 shows an exemplary schematic structure of the connection of the axle sections for connecting the individual elements together.

3 : 3 shows the schematic structure of the ring with the attached distribution and Räumungseinrichtung.

4 : 4 shows schematically the structure of a segment of the dryer.

5 : 5 schematically illustrates the construction of a dryer of several segments.

The sludge dryer according to the invention consists of a cascade of disks lying one above the other 1 as in 1 and wrestling 2 as in 3 shown. Both items make assembled a segment 3 of the dryer as in 4 is shown. The individual segments, as in 4 are represented as in 5 shown schematically, preferably by an upper cover plate 8th and lower floor plate 17 that with threaded rods 9 connected to each other, screwed into a cascade, then the mud dryer 5 results.

The disc 1 has in each case for producing a plane number of the adapted drive axle at its center a vertical axis to the disk plane attached axle core 7 ,

An exemplary way of connecting the individual Achsabschnittskerne 7 to a continuous axis 16 is in 2 shown schematically. The axis 16 consists of an axle core 7 , which is designed such that the surface 12 with the surface of the following segment the core of the drive axle 16 of the dryer. The execution of this connection can be made geometrically different. A firm connection of the axle core sections 7 is achieved by placing it in an axle sleeve 14 be introduced. The axle sleeve 14 comes with a corresponding groove 15 and by a feather key 13 , which in the preferred embodiment with the Achskern 7 and the disc 1 is connected, fixed and contributes to the connection and reinforcement of the Achsenkernabschnitte 7 at. Other designs for fixing the axle sleeve with the Axle core and the associated disc are also possible.

The disc 1 has a slot for transporting the mud from a higher level to the lower level 6 through which the mud can fall. At the ring 2 is a distributor 4 and the air intake and exhaust device 5 attached, which are preferably mounted tangentially parallel to the ring, thereby preventing a short-circuit flow and allow the highest possible loading of the air with water.

The distribution of the top mud abandoned by the rotation of the disc 1 , The rotation is through a drive axle 16 whose construction is exemplary in 2 represented by a motor 11 is driven, caused. The axis is in the cover plate 8th and the bottom plate 17 fixed by a bearing.

The cover plate 8th has an opening to feed the sludge dryer 10 , The design of this opening is based on the conditions at the place of use. The same applies to the bottom plate 17 of the dryer which has an opening for removing the dried sludge from the dryer.

1

disc

2

ring

3

segment

4

distribution and clearing device

5

Air in- and outlet

6

slot

7

shaft core

8th

cover

9

threaded rods

10

Sludge feed opening

11

drive motor

12

Connecting area at the Achskern

13

Adjusting spring

14

axle sleeve

15

slot for feather key

16

drive axle

17

baseplate

Claims (6)

Apparatus for drying liquid-containing sludges, in particular hydrous sludges, in which the water is passed through hot air over the slices 1 distributed sludge is withdrawn, characterized in that a disc 1 with a centered drive axle core 7 that by means of an axle sleeve 14 with the counterpart of the next level the drive axle 16 forms and an associated outer ring 2 on which a sludge distribution device 4 attached is a segment 3 form and the individual segments, superimposed the mud dryer 5 result. Apparatus according to claim 1, characterized in that the disc 1 for further transport of the mud to the next below level an elongated from the center to the outer edge extending opening 6 has. Apparatus according to claim 1, characterized in that the Scheibel in its center a vertical to the disk plane mounted drive axle 7 owns that by means of a sleeve 14 the connection to the next level the drive axle 16 of the dryer. Apparatus according to claim 1, characterized in that on each outer ring 2 a segment of a device 4 attached, which is suitable for a distribution of the sludge on the disc and the forwarding of the mud to the next lower level. Device according to claims 1 and 3, characterized in that on each outer ring 2 a segment of air intake and exhaust devices 5 are attached. Device according to claim 1, characterized in that the discs 1 for distributing and further transporting the sludge through one with the drive axle 16 connected engine 11 are driven.