DE1244388B - Trough mixer with a spraying device for mixing fibrous materials - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

PATENT LETTERING

Int. Cl .:

B 29 j

German class: 39 a7-5 /02

Number:

File number:

Registration date:

Display day:

Issue date:

P 12 44 388.8-15 (D 48939)

December 17, 1965

July 13, 1967

April 30, 1970

The patent specification differs from the patent specification

The invention relates to a continuous working trough mixer with a spraying device for mixing fiber-like substances, such as wood, paper, coconut, hemp, fabric fibers and the like, with preferably liquid binders, if necessary also dyes and other additives, consisting of a mixing trough through which the material by means of mixing elements rotating therein or by inclining the mixing pan continuously while receiving the Additions is carried out.

There are various designs of trough mixers for gluing wood chips or the like. known. There are continuously and discontinuously working trough mixers in which a or several agitators set the chips in motion more or »5 less loosely and at to which in this loosened mass the binding agents and additives are sprayed or otherwise added in a liquid or powder-like state. Aiisführungfornicn are also suggested ao in which faster-running mixers turn the wood chips into correspondingly large trajectories to force. Such machines require additional equipment to return the chips to the throwing mechanism to feed. »5

The machines of the present type for gluing wood chips, in particular for gluing and wetting of fibrous materials, the disadvantage is attached. that the chip or to be wetted fiber-like fabrics tend to become matted. Immediately after or during the addition of the binder. Resins or the like, clic chip-like or fiber-like substances matted into lumps that differ from the inside to the outside Have binding components and also differ in the scattering that takes place after the mixing process and compression does not dissolve. The end products are therefore in their quality and their appearance different.

The object of the invention is to prevent agglomerations of mix to largely prevent or dissolve clumps that form in devices of the type mentioned at the outset.

This object is achieved in that the mixing trough through sieves, which during mixing resulting agglomerations, clumps 11. like. Retain, is divided into closed chambers and that In front of the sieve these clumps of mix are arranged comminuting snow blades.

The Sehncidflügcl according to the invention can be arranged on the shaft of the mixing elements and, like the see, built into mixing troughs of conventional design. I'm a fast shredder of continuously working trough mixers with a spray device for mixing
fibrous substances with preferably liquid
Binders

Patented for:

Draiswerke G.m.b.H., 6800 Mannheim-Waldhof

«Ίϊ».

Named as inventor:

Kaspar Engels, 6800 Mannheim-Waldhof;

Wilhelm Schneider, 6700 Ludwigshafen

It is to achieve agglomeration of mixes It is particularly advantageous to arrange the cutting blades and the mixing tools individually on coaxial shafts, which can be driven at different speeds. For this purpose, the cutting blades be placed on separate shafts, hubs or the like. Are in a particularly advantageous manner the Schneidflijgcl at the same time designed as a mixing blade. Mixing elements adapted to the respective degree of mongrel can be used in the individual chambers are provided.

According to a further feature of the invention, the rotating cutting blades work with directly fixed counter knives arranged in front of the sieves. This can be a Achieve an increase in the material throughput. To a large amount of material material agglomeration avoid and pre-crush the lumps that form, according to Another feature of the invention in addition to the cutting blades. the seven cutting knives arranged be that rotate at the same speed as the cutting blades.

In a modified embodiment, in which the material by the inclination of the trough is carried through, are funnel-shaped, arranged with their tip downwards according to the invention Sieves arranged in the inclined or vertical mixing trough and on a shaft in At a certain distance in front of the sieves, parallel cutting blades are attached.

In a particularly advantageous manner, the sieves are arranged in the mixing trough that they through Shifting allow adjustment of the cutting gap.

009 618 347

Further details, features and advantages of the invention will become more detailed with reference to the drawings explains the various embodiments of a trough mixer with the sieve according to the invention and represent shredding tools. It shows

1 shows a continuously operating trough mixer in a horizontal position,

Fig. 2 is a section along the line II-II in Fig.l,

3 shows a trough mixer according to the invention in a vertical arrangement, and

Fig. 4 is a section along the line IV-IV in Fig. 3.

In Fig. 1 shows a continuously operating trough mixer for fiber gluing, consisting from a trough 1 and a hood 2, which is filled with 3 nozzles. The fiber material is through a funnel 4 is fed and leaves the mixer through the outlet opening S. In the mixing trough is a Arranged mixer, which consists of a shaft 6 with 7 mixer rods. The mixer shaft 6 is driven via a disk 8 and is supported in bearings 9. According to the invention is the Mixing trough 1 separated by sieve walls 10. In front of these screen walls 10 run at high speed driven, also designed for mixing around cutting blades 11, which work together with fixed counter knives 12. The cutting blades 11 are arranged in an advantageously adjustable manner on a hub 13, which is driven via a pulley 14, a belt 15 and a drive motor 27.

On the hub 13 more can still be free running cutting knife 16 may be arranged. The sieve surfaces 10 can optionally be in the area the hood 2 are continued by sieves 17, so that the through the trough jacket 1 and the Hood 2 formed trough mixer is divided into chambers. The mixer rods 7 are advantageously arranged so that a slight thrust especially on the agglomerations of the mix in the direction of the sieves 10.

FIG. 2 shows a cross section through the mixing trough 1 with hood 2 and nozzles 3 according to FIG the mixer shaft 6 arranged in the mixing trough is supported by a hub 13 which supports the cutting blades 11 carries and wind driven by a V-belt 15 from the motor 27 at a higher speed than the mixer shaft. The cutting blades work with the shortly before the sieve 10 fixedly arranged counter knives 12 together. The sieve 17 blocks the Free space under the hood 2.

In contrast to the embodiment according to • Fig. 1 and 2, which represent a horizontal trough mixer, in which, in addition to the cutting knives, another Mixing mechanism of the usual design rotates at low speed, is a particularly advantageous embodiment in FIGS. 3 and 4 a vertical trough mixer shown. In the trough 20 sieves 21 are fixedly arranged, preferably are funnel-shaped. However, the sieves can also be horizontal or cylindrical Trough 20 can be arranged. In the case of the cylindrical embodiment, there would then be special returns necessary for the fiber material. A mixer shaft 22 arranged axially in the trough 20 carries Cutting devices 23 which are fastened on the shaft 22 by means of a hub 24. The cutting blades 23 are preferably arranged parallel to the sieves 21 and sweep them at a relatively small distance. It is also possible to arrange additional counter knives 26 between the cutting blades and the sieves. The shaft 22 with the cutting blades 23 rotates at a relatively high speed, for example with a trough diameter of 700 mm at about 600 revolutions per minute. In particular in the case of the vertical trough arrangement, the cutting blades 23 simultaneously serve as mixing blades for each

ίο located between two sieves 21 fiber mass, which, as indicated by the arrow α , trickles into the trough mixer from above and emerges at the bottom after passing through the individual sieves. Of course, it is also possible to add the fiber mass in the second or third chamber of the trough mixer, depending on the type and fineness. In a particularly advantageous manner, the sieves 21 are height-adjustable by means of screws or the like (not shown in FIGS. 3 and 4) arranged on the trough shell 20 in order to be able to set the most appropriate cutting gap for the fiber mass input. The nozzles 25 are arranged in such a way that they spray laterally through the trough jacket 20 into the spaces between two screens. The conical arrangement of the sieves has the particular advantage that the centrifugal forces arising under the action of the cutting blades particularly favor the drawing in of the fiber-binding agent clusters and thus the sieving performance is also increased significantly. The inclined arrangement of the sieves also ensures a pure circulation of the fiber material located between two sieves, without a closed ring formation, as z. B. would occur in a cylinder screen, sets itself.

Fig. 4 shows the vertical trough mixer with the Trough jacket 20, the cutting blades 23 and the counter knives 26 according to FIG. 3 in horizontal section. In The sieve 21 is arranged a short distance behind the counter knives. The cutting wings are preferred adjustable on a hub 24. The storage of the mixer shaft 22 and its drive are in Fig. 4 not shown. The cutting blades 23 are, as Fig. 4 shows, set for pulling cut, however, other cutting knife shapes can also be used.

Of course, while maintaining the basic concept of the invention in its design, the mixing trough can also be modified further, so z. B. the mixing trough arranged at any incline being. It is also possible to arrange the cutting tools on a shaft that is separate from the mixer shaft To mount shaft so that they partially mesh with the mixing tools. Finally it is possible the Bedüsiings- and feeding devices for

SS to distribute the binder and fiber material over the length of the trough mixer.

Claims (12)

Patent claims: 1. Continuously operating trough mixer with a spray device for mixing fibrous materials, such as wood, paper, coconut, hemp, fabric fibers and the like, with preferably liquid Binders, possibly also dyes and other additives, consisting of a mixing trough through which the material is The mixing elements circulating therein or the inclination of the mixing trough is brought through continuously while absorbing the additives, characterized in that the mixing trough ( 1, 20) is in closed chambers is subdivided and that cutting blades (11, 23) which comminute these mixed material agglomerations are arranged in front of the sieves. 2. Trough mixer according to claim 1, characterized in that the cutting blades (11, 23) are arranged on the shaft (6) of the mixing elements (7). 3. Trough mixer according to claim 1, characterized in that »5 indicates that the cutting blades (11) and the mixing elements (7) each on their own coaxial Shafts sit that can be driven at different speeds. 4. Trough mixer according to claim 1 to 3, characterized in that »< > characterized in that the cutting blades (23) are also designed as mixing blades. 5. Trough mixer according to claim 1, characterized in that in the individual chambers Mixing elements adapted to the respective degree of mixing are provided. 6. Trough mixer according to claim 1 to 4, characterized in that the preferably high-speed rotating cutting blades (11, 23) directly in front of the sieves (10, 21) provided fixed counter knives (12, 26) are assigned. 7. trough mixer according to claim 1 to 4 and 6, characterized in that in addition to the cutting blades (Ϊ1) cutting blades (16) rotating at the same speed are arranged . (Fig. 1). 8. Trough mixer according to one or more of A, Proverbs 1 to 7, in which the material through the slope of the trough is carried through, characterized by funnel-shaped with their Pointed down sieves (21) and fixed on a shaft (22) at a distance in front the seven parallel cutting blades (23). 9. Trough mixer according to claim 1 to 7, characterized in that the mixer rods (7) are designed and arranged in a manner known per se in such a way that a slight thrust on the material to be mixed in the direction of the sieves (10, 21) can be exerted. 10. Trough mixer according to claim 1 to 4 and 6 and 8, characterized in that the cutting blades (23) are set to pulling cut are (F i 2.4). 11. Trough mixer according to claim 1, 6 and 8, characterized in that the sieves (10, 21) are slidably attached in the mixing trough for setting the cutting gap. 12. Trough mixer according to claims 1 to 4, 6 to, 8 and 10, characterized in that the Cutting blades (11) are adjustably arranged on the hub (13). Considered publications:
German Auslegeschrift No. 1 020 002, 102 534;
Brochure from Gebr. Lödiae Maschinenbau GmbH in 4790 Paderborn, prospectus no. WD 7, 1964. W / D. 101-5000. 1 sheet of drawings 709 610/414 7. β? Ο Bundesdnickerei Berlin