DE1224133B - Device for dewatering animal substances by evaporation - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

A23k

German class: 53 g - 4/02

Number: 1224133

File number: N 19768 IV a / 53 g

Filing date: March 20, 1961

Opening day: September 1, 1966

The invention relates to a device for dewatering animal matter by evaporation, consisting of a substantially horizontally arranged cylindrical container, the is provided with a heating jacket and an agitator with running in the cylinder axis of the container Axis encloses, wherein a connected to the container interior steam outlet chamber is provided.

Such a device is used for processing animal waste materials or the like, for example from Slaughterhouse waste, carcasses, raw fat and bones, for the production of bone meal, meat-bone meal, Animal meal, greaves and the like. B. can be used as animal feed.

Known devices, which are also used as shredding machines, for example, are with a dome to the steam outlet provided in the top and usually have an agitator, which is provided with knife-like arms and the material to be concentrated and dried keeps stirring and thereby supports the evaporation of the liquid to be removed.

When dewatering animal matter with a device of the specified type, in great difficulty in two ways. On the one hand, the animal substances to be processed are during exposed to high temperatures during processing. These high temperatures can last for a long time Heating of the substances lead to a reduction in the quality of the products to be achieved. B. When crushing bones the fats turn darker and the proteins turn into less digestible ones Form transferred. In the known devices of the type specified, the processing time is still too great for this deterioration in quality to be avoided. The other occurs with the well-known Devices inevitably often local overheating of the animal substances to be processed at the Container wall on, as part of the heated container wall does not or not sufficiently of the animal material is covered and the heat supplied is not immediately caused by the evaporation process is absorbed. This local overheating leads to the burning of animal substances and therefore also to a reduction in the quality of the products to be manufactured.

In a known device of the type specified at the outset, the steam outlet chamber is located at the top of the interior of the container and is in open connection with this interior of the container. These known device is not suitable for eliminating the difficulties outlined above.

Device for dewatering animal
Substances by evaporation

Applicant:

N. V. Nederlandsche Thermo-Chemische

Factories,

Hilversum (Netherlands)

Representative:

Dipl.-Ing. H. Kosel, patent attorney,

Bad Gandersheim (Harz), Braunschweiger Str. 22

Claimed priority:

Netherlands of March 29, 1960 (249 916)

ao The known device is due to the described arrangement of the steam outlet chamber to very low Rotational speeds of the agitator are limited. The agitator speed must be so low be kept that the material to be processed is not thrown up to the top of the container inner wall otherwise the material particles thrown thereon will be thrown into the steam outlet chamber or sucked into them. However, there is a risk that not processed or only partially processed Particles of material escape through the steam outlet, but above all the risk of the steam outlet becomes clogged by these particles. As a result of the need to comply with this known device low agitator speed, the material to be processed is only mixed with part of the Heating jacket brought into contact, so that a lengthy processing time is necessary and before In particular, the inadequate processing of the material is to be feared. Even with this well-known The above-mentioned difficulties therefore persist in the device.

The invention is based on the object of reducing the processing time of a device as specified in the introduction To significantly reduce the species and to prevent local overheating of animal substances, in order to achieve the best possible quality of the products to be manufactured with economical operation of the device to ensure.

According to the invention, this is achieved by

5 "that in the axis of the agitator in per se known Way, an axially extending line is arranged with openings opening into the interior of the container,

609 658/142

ϊ 224 133

3 4

which discharges into a steam outlet chamber, and formation of the device according to the invention, this steam outlet chamber is a continuation of the loading it is possible to form the rotatable parts of the device as a holder in the axial direction and to assemble a well-balanced whole from this,
is separated by a vertical partition with a through-According to a further embodiment of the invention opening for the axis. This means that the lines for supply and removal are achieved so that the rotating speed of the agitator of the material to be treated is provided with lids, whose surfaces facing the inside of the container can be selected without difficulty so that the animal substances to be treated can be continued the container circuit surrounding the lid of the agitator up to the top of the inner wall parts are formed. By this measure manure of the container are thrown. This creates an uninterrupted inner surface of the container, ■ the advantage is achieved that on the one hand the discharge of the steam generated in the container interior along the material to be processed is completely changed, without any accumulations of material being removed from the actual container space, which remain and are overheated. The container wall forms during operation.

the device a substantially closed 15 In the drawing, an embodiment of the

Cylinder jacket on which the device to be treated according to the invention is shown. It shows

animal substances are evenly distributed. 1 shows a longitudinal section through the device

thereby a complete utilization of the supplied according to the invention,

Thermal energy in continuous operation enables F i g. 2 is a sectional view along the line Π-Π

light and local overheating of the animal substances 20 of FIG. 1.

prevented with the specified consequences. The In the illustrated embodiment has Working time is significantly reduced, as is the evaporation device, which has a double-walled cylinder required steam consumption. drical part 1 and two lid-like parts 2 and 3

It is already proposed in a known device, each with a bearing 4 or 5 for the agitator been, the heated container jacket 35 plant axis 6 are provided.

split and a partial heating shutdown The outer wall of part 1 is with a

to undertake. However, it has been shown that there is a steam supply pipe 7 and an outlet line 8

not significantly reduced by the processing time for the condensate. A line 9 that

could be set and that also the Ab- goes through both walls and to the

circuit is extremely un- 30 filling the container with the to be concentrated

is cheap. The occupancy of the container wall remained or is used to dry animal material

continue to be closed unevenly with the risk of local means of a lid 10. the

Overheating of the raw materials to be processed. lower wall of the cover 10 lies in one plane

It is used in a centrifuge to evaporate with the inner surface of the inner wall of the

Liquids with a vertical working position known, 35 Part 1, so that a closed surface is formed

the inner rotating drum is used as an axial line for the material is thrown along,

to use the steam exhaust. Structure, problem- A line 11 for removal of the material according to

position and mode of action are, however, in the case of the treatment is arranged in part 2 and with

knew centrifuge completely from those of the inventively provided a plug-shaped lid 12,

according to the device different. The same 40 a tube 13 is attached to the axis 6. The pipe

also applies to a horizontally operating centrifuge 13 is along its section, which is within the

for the separation of crystals from liquids, with evaporation chamber runs, with rows of

of the axial lines in the rotating drum provided openings 14 which have a diameter of

for supplying washing liquids or steam z. B. have 20 mm. The pipe 13 is also on

to serve. 45 its end, which is in the part 3

According to one embodiment of the invention, the chamber formed is located, with a number of larger ones

The steam outlet chamber is provided with openings 15 extending radially.

stretching baffle plate into two axially side-by-side sections. Six pairs of arms 16 lying on the pipe 13 are divided, the axial line opens. The arms 16 carry axially extending device in the agitator axis through at least one 50 strip-shaped agitator parts 17 which are adjustably fastened at their radial opening in the one section of the steam-inwardly bent ends,
outlet chamber and is the other portion of a radial wall 18 is disposed between the chambers steam outlet chamber with a steam outlet conduit formed by parts 1 and 3 connected. This has the advantage that the. In the exemplary embodiment shown, the particles which have been attached to part 3 by means of the steam through the axial wall 18 and carried along with a central line are provided in the steam outlet opening 19, through which the pipe 13 and the letting chamber are excreted. some play goes through. In part 3 there is a traffic jam

A particularly expedient design of this disk 20 is arranged. Through this baffle is Embodiment is prevented in a further embodiment that the openings 15 leaves Invention achieved by 'that the axial line 60 steam directly to a steam outlet pipe 21 on flows through a massive axle and part 3 mounted in bearings. Any liquid or solid a pipe fixed on this axis is formed and particles emerging from the evaporation chamber through the pipe has the openings and the agitator is carried along with the steam, become the larger parts carries. It is also advantageous if in part in the chamber formed by the part 3 further Embodiment of the invention the agitator 65 divorced. The excreted substances can through strip-shaped, with inwardly bent ends, an outlet pipe can be removed and into the provided Has parts that are adjustable from the steam chamber by a not shown Pipe worn arms are attached. Recirculated through this line if so desired.

Even if the evaporation device shown in the drawing is for shift operation is determined, it can easily be seen that the invention also applies to devices with continuous Operation can be used. This can e.g. B. be carried out by a device that is constructed essentially in the manner shown, but which has an inlet in part 2 in the vicinity of the Has top, an opening in the partition 18 and an outlet in part 3 in the Near the bottom, the inlet and outlet lines are provided with transport screws are.

The following table shows, as an example, the results that can be achieved with the aid of the device described for different raw materials.

Raw materials

Flour yield in percent
fat

Vaporized
Humidity

Protein content

of the flour

Drain

Animal carcasses

Slaughterhouse waste

Poultry and game waste
bone

With the device according to the invention it is thus possible to achieve a significantly reduced processing time without local overheating and damage to the animal raw materials from excessively high temperatures and burns from slaughterhouse waste, carcasses and similar animal materials qualitatively high-quality and valuable animal feed and meat meal with a high content of easily digestible proteins to manufacture.

Claims (5)

Patent claims: 1. Device for dewatering animal matter by evaporation, consisting of a substantially horizontally arranged cylindrical container, which is provided with a heating jacket is and encloses an agitator with an axis running in the cylinder axis of the container, a steam outlet chamber connected to the interior of the container being provided, characterized in that in the Axis (6, 13) of the agitator (16, 17) in a manner known per se is an axially extending line with openings (14) which open into the interior of the container and which extend into the steam outlet chamber (3) discharges, and this steam outlet chamber is a continuation of the container in axial direction Direction forms and from this through a vertical partition (18) with a passage opening for the axis (13) is separate. 2. Apparatus according to claim 1, characterized in that the steam outlet chamber means a radially extending baffle plate 24
52.5 10 8.5
9
12.5 64
73.5
67
35 65
65
67.5
38.5 (20) is divided into two axially adjacent sections, the axial line in the agitator axis through at least one radial opening (15) in one section of the steam outlet chamber opens and the other section of the steam outlet chamber with a steam outlet line (21) is connected. 3. Device according to claims 1 and 2, characterized in that the axial line by a massive axle (6) mounted in bearings (4, 5) and one attached to this axle Tube (13) is formed and the tube has the openings (14, 15) and the agitator parts (16, 17) wears. 4. Device according to claims 1 to 3, characterized in that the agitator is strip-shaped, with inwardly bent ends provided parts (17) which are adjustable to of the tube (13) supported arms (16) are attached. 5. Device according to claims 1 to 4, characterized in that the line for the supply and removal of the material to be treated are provided with lids (10, 12), the surface of which faces the inside of the container is shaped as a continuation of the container inner wall parts surrounding the lid. Considered publications:
German patent specifications No. 401444, 441330,
880,747179; German interpretative document No. 1795 495. 1 sheet of drawings 609 658/142 8.66 © Bundesdruckerei Berlin