JPH0317539B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides, from an aspect, the opening and grinding of particulate, granular and/or agglomerated bulk materials which are constantly replenished in a forced manner, for example by blade-like means. and/or relating to a device for mixing. The device has a rotatably supported and driven shaft and at least one knife-like tool, said knife-like means being moved relative to the device.

A number of variations of this type of device are known and are called cutter-heads.
Such devices are streak-free to prevent caking and agglomeration in the mixed materials and do not form streaks or layers of liquid and paste components with the mixed materials.
It is mounted on the inner wall of the cylindrical vessel of the mixer between mixing means which rotate within the mixer to achieve mixing. Streak-free mixing is very difficult when processing certain very fine ingredients and also when adding liquid and flexible additives (such as plastic additives, lecithin, molasses, etc.) to the mixed materials. It is known that there are or are not able to blink. Furthermore, the known cutter heads are not able to provide substantial comminution.

It is also known to use disk attrition mills instead of cutter heads. The mill has two disks, each having a number of vertically projecting pins, rotated relative to each other. However, these disc-type attrition mills can only be used for crushing and comminution, and only on a conditional basis, because the portion relating to the forced-circulation mixer is designed in the form of a closed cage. This mill gives particularly good results in the case of highly fluid solid mixtures or liquids.

It is an object of the present invention to provide an apparatus which is capable of streak-free mixing of extremely fine components, liquids and plastic additives in bulk materials, and also of carrying out a grinding action.

The device of the invention achieving this object comprises a rotatably supported and driven shaft on which at least one knife-like tool is mounted;
Apparatus for crushing, crushing and/or mixing fine particulate, granular and/or lumpy bulk material which is constantly and forcefully replenished from the side, wherein each knife-like tool is connected to at least one line. supporting on at least one surface a number of vertically projecting pins arranged along the
the knife-like tool is combined with a stator;
The stator supports pins corresponding to the pins and arranged in one line, and the pins protrude between the pins of the combined rotating knife-like tool. be.

Although the apparatus of the present invention has a cutterhead type configuration, it also has the advantages of a disc type attrition mill. It is a great advantage that the pins are simply arranged in a row for time-spaced interaction. Such an array is
Particularly for forced circulation mixers, such as plowshare mixers, the pins are often intertwined, rather than being dispersed over a large area.
It is extremely advantageous. This is because, with the arrangement according to the invention, the new bulk material that is constantly being replenished into the apparatus remains in the apparatus according to the invention only for a relatively short time. Even during such a short residence time in the apparatus, even components that are difficult to handle can be sufficiently streak-free mixed using the apparatus of the present invention. Furthermore, according to the invention, the problem arises when the known disk-type attrition mill is attached as an auxiliary unit to a forced circulation mixer, in which part of the bulk material is processed for a very long time and other parts are not processed properly. situations can be prevented.

The apparatus of the present invention is particularly effective when processing microcrystalline, hard or coarsely grained components, and flexibly deformed components. However, the shape and spacing of the knife-like tool and the pins of the stator in combination with each other can be selected, for example, such that the fiber agglomerates are broken up without substantially crushing the fibers.

In a preferred embodiment of the invention, both the rotatably supported knife-like tool and the associated stator are each designed as horizontally extending flat bars.
Two flat bars are positioned opposite each other and each is provided with interlocking pins.
These pins rotate 2 times per revolution of the shaft.
When they are intertwined, they are free from each other. In that case, one of the knife-like tools acts as a cutter head. In addition, the knife-shaped tool in conjunction with the stator crushes the newly replenished mixture conveyed into the crushing device and has a particularly good crushing and mixing effect. Further, the knife-like tool and the stator may be curved. In either case, the apparatus of the present invention has the advantages of cutter heads and disk-type attrition mills, without the disadvantages of those apparatuses.

Another feature of the invention is that no extreme energy consumption peaks occur during the interlocking of the rotating knife-tool pins and the stator pins. That is, the pins of the knife-like tool are arranged offset relative to the pins of the stator, so that the pins of the rotating knife-like tool pass through the pins of the stator successively, but not simultaneously. This places the pins of each stator preferably on a radial plane passing through the axis of the shaft (i.e., a plane substantially perpendicular to the axis of the shaft), and the pins of the associated knife-like tools. This is achieved by arranging it along a curved line on a radial plane passing through the axis of the shaft. By doing so, it is possible for example for the pins located at the leading edge of the knife-like tool to intertwine first, in which case said pin located at the leading edge passes first through the row of pins of the stator; The pin of the knife-like tool on the inner side continues to pass thereafter. Of course, the reverse arrangement is also possible.

These pins have various cross-sectional shapes, mutual spacing,
It is particularly preferred that the adjacent pins of the stator and the knife-like tool be arranged at a mutual spacing of 5 to 50 mm, preferably about 20 mm, and a diameter of about 8 mm. . The gap between the combined pins of the stator and knife-like tool is suitably about 1 to 15 mm. The pins of the stator and knife-like tool preferably have a circular cross-sectional shape, but may have a square, triangular, or egg-shaped cross-sectional shape, and preferably have a length of about 5 to 30 mm. .

In another embodiment of the device of the invention, the knife-like tool has pins on its top and bottom surfaces, and a stator with pins is provided to be associated with the top and bottom of the knife-like tool. There is. The pin of the knife-like tool may be formed by a single pin passing through the knife-like tool from one side to the other.

It is also possible to arrange a plurality of knife-like tools in a superimposed manner on the shaft, and to arrange one stator between adjacent knife-like tools. Each stator consists of flat bars that intersect at 90 degrees to each other. In any case, the essential design for efficient and rapid flow of the bulk material processed in the device of the invention is ensured.

The device according to the invention is mounted on the bottom of the mixer in such a way that it is always located between the rotating surfaces of the mixing tool, which is arranged at the outer end of the arm, which is arranged radially on the drive shaft of the mixer, which has a cylindrical container, for example. must be placed.

Next, one embodiment of the apparatus of the present invention will be described based on the drawings. FIG. 1 is a schematic vertical cross-sectional view of an embodiment of the device of the present invention provided at the bottom of a cylindrical mixing container, FIG. 2 is a schematic plan view of an embodiment of a knife-shaped tool in the device of the present invention, FIG. 3 is a schematic plan view of one embodiment of a stator combined with the knife-like tool.

The device 1 of the invention is mounted on the bottom of a cylindrical mixing vessel 2 shown in FIG. 1 and has a shaft 3 passing through the mixing vessel 2. The shaft 3 has an angular member 4 at its end.
A bushing 5 designed to accommodate the horn-shaped member is fitted into the horn-shaped member 4;
It is held in place by screwing a nut 6 into the end face of.

The bush 5 supports a knife-shaped tool 7, which is formed as a flat bar and is fitted with a downwardly directed pin 8.

A stator 9 in the form of a flat bar is arranged below the knife-like tool 7 and carries a pin 10 attached to the stator 9, which corresponds in shape and length to the pin 8 of the knife-like tool 7. are doing. Pin 8 is pin 1 as shown in FIG.
They are mounted offset so that they can pass between 0 and 0.

The stator 9 is fixed by screws 12 to a block 11 surrounding the shaft 3. Block 1
1 is welded to the inside of the container.

The knife-like tool 7 is rigidly connected to the horn 4 which is associated with the bush 5 and the shaft 3, so that it is connected with the shaft 3 when the shaft 3 is driven by a motor (not shown). Rotate.

FIG. 2 shows the basic shape of the knife-like tool 7. The pins 8 are arranged on both sides of the central hole 13 in the curved line 14; they are not arranged in a ray of a radial plane passing through the longitudinal axis 15 of the shaft 3.

If desired, the outer edges 16, 17 of the knife-like tool 7
may be sharpened.

Further, a square central hole 13 is provided in the bush 5 for sliding a knife-like tool 7 thereinto.

The stator 9 shown in FIG. 3 is a rectangular flat bar on which the pins 10 are arranged along a radial line 18 on a radial plane passing through the longitudinal axis 15 of the shaft 3. .

As shown in FIGS. 2-3, the knife-shaped tool 7 and the stator 9 are each configured as a flat bar.

Further, as shown in FIG. 2, a knife-shaped tool 7
is curved in the radial plane, and each radial end thereof is in the rotational direction (circumferential direction) of the knife-like tool.
It has a tip that is oriented towards.

Further, as described above, the plurality of pins 8 of the knife-like tool 7 are arranged so as to be offset from each other in the circumferential direction, that is, in the lateral direction of the knife-like tool 7, by mutually different amounts (center angles) with respect to the pins 10 of the stator 9. , the plurality of pins 8 of the rotating knife-like tool 7 are therefore configured to pass through the pins 10 of the stator 9 not simultaneously, but successively, that is, one after the other.

The line 18 of the pins 10 of the stator 9 is a radial straight line, whereas the pins 8 of the knife-like tool 7 are arranged along a curved line 14 on the radial plane, the pins 8 being aligned with the knife All surfaces (i.e. longitudinal surfaces) that include the central axis 15 of the shaft 3 and extend in the radial direction while the shaped tool 7 rotates.
intersect with

Such an arrangement ensures that during driving the pins 8 do not pass between the pins 10 simultaneously, but rather successively, and that the knife-like tool 7 passes between the stators 9
does not produce peaks that require excessive energy when passing through.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of the device of the present invention provided in the lower part of a cylindrical mixing container, FIG. 2 is a schematic plan view of an embodiment of the knife-shaped tool in the device of the present invention, FIG. 3 is a schematic plan view of one embodiment of a stator combined with the knife-like tool. (Major symbols in the drawing), 3: Shaft, 7: Knife-shaped tool, 8: Pin of knife-shaped tool, 9: Stator, 10: Pin of stator, 14: Line of knife-shaped tool, 15: Axis of shaft, 18 : Stator line.

Claims (1)

[Claims] 1. It has a rotatably supported and driven shaft on which at least one knife-like tool is mounted, and is capable of handling particulates, granules and ( or) an apparatus for crushing, crushing and/or mixing agglomerated bulk material, wherein each knife-like tool comprises at least a number of vertically projecting pins 8 arranged along at least one line 14; The knife-like tool 7 supports the stator 9 on one surface.
, characterized in that the stator 9 supports pins 10 arranged in one line 18, and the pins 10 protrude between the pins 8 of the rotating knife-like tool 7. Device. 2. Device according to claim 1, in which both the knife-shaped tool 7 and the stator 9 associated therewith are each designed as a flat bar lying in one plane. 3. The knife-like tool 7 and the stator 9 each consist of a flat bar, and the knife-like tool 7 is curved in a radial plane, and each radial end thereof has a tip pointing in the circumferential direction. An apparatus according to claim 1, having the following characteristics: 4 The plurality of pins 8 of the knife-like tool 7 are offset from the pins 10 of the stator 9 by mutually different amounts in the circumferential direction, and the plurality of pins 8 of the rotating knife-like tool 7 sequentially move between the pins 10 of the stator 9. 3. The device according to claim 1, 2 or 3, wherein the device is arranged so as to pass through one after the other. 5 The pin 10 of each stator 9 is connected to the shaft 3
The knife-like tool 7 to be combined is arranged on a radial line in a radial plane that crosses the central axis 15 of the
The pin 8 is arranged on at least one curved line 14 such that it intersects all radially extending surfaces including the central axis 15 of the shaft 3 during rotation of the knife-like tool 7. The apparatus according to claim 4. 6. The device according to claim 1, 2, 3, 4 or 5, wherein adjacent pins 8, 10 of the stator 9 and knife-shaped tool 7 are separated by about 5 to 50 mm. . 7. The device according to claim 1, 2, 3, 4 or 5, wherein adjacent pins 8, 10 of the stator 9 and knife-like tool 7 are separated by about 20 mm. 8 The distance between the assembled pins 8 and 10 of the knife-shaped tool 7 and the stator 9 is approximately 1 to 15 mm.
Claims 1, 2, 3,
Apparatus according to paragraph 4, paragraph 5, paragraph 6 or paragraph 7. 9. Claims 1, 2, 3, and 4, wherein the pins 8, 10 have a length of approximately 5 to 30 mm.
The device according to paragraph 5, paragraph 6, paragraph 7 or paragraph 8. 10. The knife-like tool 7 is provided with pins 8 on its upper and lower surfaces, and each stator 9 is attached above and below the knife-like tool 7. Section, Section 4,
Apparatus according to paragraph 5, paragraph 6, paragraph 7, paragraph 8 or paragraph 9. 11 A plurality of knife-like tools 7 are stacked one on top of the other, and one stator 9 is placed between adjacent tools 7.
Claims 1, 2, 3, 4, 5, 6, and 7 to which
10. The device according to paragraph 8, paragraph 9, or paragraph 10. 12 The stators 9 are offset by nearly 90 degrees from each other and are attached so as to intersect.
Claim 1 consisting of two flat bars;
Section 2, Section 3, Section 4, Section 5, Section 6, Section 7
12. The device according to item 8, item 9, item 10, or item 11.