DEVICE FOR FIXING AND ALIGNING CUTTER BLADES FOR A SYSTEM FOR FINE COMMINUTION

Abstract

The invention relates to a device for fixing and aligning cutter blades for a system for fine comminution and/or for emulsification of semisolid, plastic or plastoelastic substances, in particular raw substances for food production, comprising means for the detachable fastening of the cutter blades (3) to a cutter drive shaft (4). Furthermore, according to the invention, a single-part or multi-part support or carrier body (6) is provided which extends under or over the cutter blades (3) and which is connected, radially at the inside, to the cutter drive shaft (4), wherein a positively locking and/or non-positively locking connection is formed at least radially at the outside between the associated end of the support or carrier body (6) and the respective cutter blade (3).

Claims

1. A device for fixing and aligning cutter blades for a system for fine comminution and/or emulsification of semisolid, plastic or plastoelastic substances, in particular raw substances for food production, comprising means for the detachable fastening of the cutter blades (3) to a cutter drive shaft (4), characterized in that a single-part or multi-part support or carrier body (6) is provided, which extends under or over the cutter blades (3) and which is connected, radially at the inside, to the cutter drive shaft (4), wherein an interlocking and/or friction-locked connection is formed at least radially at the outside between the respective end of the support or carrier body (6) and the respective cutter blade (3).

2. A device according to claim 1, characterized in that the support or carrier body has an annular or circular-segment-like flat shape.

3. A device according to claim 1, characterized in that the support or carrier body (6) comprises support arms (63), wherein the support arms (63) extend at an angle to the plane of the support or carrier body (6) and engage with their free ends into respective recesses (31) radially at the outside in the respective cutter blade (3).

4. A device according to claim 3, characterized in that the engagement region between the respective recess (31) and the respective free end of the respective support arm (63) is formed as a pivot or swivel point for setting different pitch angles of the cutter blades (3) with respect to the longitudinal axis of the drive shaft (4).

5. A device according to claim 3, characterized in that the cutter blades (3) are mounted in a rotationally fixed manner in the region of their fastening to the drive shaft (4), but are mounted in a pivotably movable manner about their longitudinal axis, wherein the resulting angular variance relative to the longitudinal axis of the drive shaft and the resulting different position of the end radially at the outside of the respective cutter blade can be set or fixed via interlocking elements between the respective cutter blade and the respective support arm.

6. A device according to claim 2, characterized in that the ends of the cutter blades (3) radially at the outside are connected in the region radially at the outside of an annular carrier body (6) in a friction-locked manner, especially bolted together therewith.

7. A device according to claim 6, characterized in that the annular carrier body (6) comprises a central fastening surface (62) disposed in its centre of gravity and several connecting webs (61) between the fastening surface (62) and the circular ring.

8. A device according to claim 7, characterized in that the central fastening surface (62) comprises a polygonal recess which corresponds to the contour of a cutter drive shaft (4) formed as a polygon.

9. A device according to claim 1, characterized in that the cutter blades (3), together with the support or carrier body (6), are in connection in a rotationally fixed manner with the cutter drive shaft (4), but are adjustable about their own axis and/or to the longitudinal axis of the cutter drive shaft (4) by maintaining the support function.

10. A device according to claim 1, characterized in that the support or carrier body (6), or parts thereof, have a three-dimensional shape for influencing the conveying effect on the substance or product to be comminuted.

11. A device according to claim 1, characterized in that the cutter blades (3) are arc-shaped, wherein both the start and end of the respective arc are connected in an interlocking and/or friction-locked manner to the respective support or carrier body (6).

12. A device according to claim 1, characterized in that the support or carrier body (6), including the cutter blades (3), are disposed in a bowl-shaped receiving container.

13. A device according to claim 1, characterized in that the support or carrier body (6), including the cutter blades (3), are disposed in a tube of a continuous cutter.

14. A device according to claim 1, characterized in that several support or carrier bodies (6), including the cutter blades (3), are arranged one behind the other in the direction of movement of the material to be comminuted.

Description

[0035] The invention will be explained below in closer detail by reference to embodiments shown in the drawings, wherein:

[0036] FIG. 1 shows a side view and a top view of a first embodiment of the invention with a cutter blade fastening in the front region in an interlocking manner to a respectively profiled support body;

[0037] FIG. 2 shows a blade arrangement with support body and a sectional view along the line A-A, wherein the support body with the cutter blades are formed to be jointly angularly adjustable, and

[0038] FIG. 3 shows a top view of a cutter blade arrangement with annular support or carrier body as well as a sectional view along the line A-A with a bolted connection of the respective ends of the cutter blades to the annular support or carrier body.

[0039] It is a common feature in the following embodiments that the cutter blades are fixed twice in order to avoid lateral deflection of the blades, but at least to reduce said deflection. As a result of a variable inclined position of the cutter blades, the angle of attack of the respective cutter blade on the product to be treated as well as the cutting angle can be varied specific to the product. This renders an exchange of blades in the case of a respective change of the starting product to be treated substantially unnecessary. Furthermore, the product flow in the bowl is supported via the inclined position of the cutter blades. This can additionally be produced in such a way that the blade bodies themselves do not have a flat shape but a suitable three-dimensional shape in order to produce a turbine effect with a respective conveying effect. The dwell time of the product in the cutting space is reduced or becomes controllable in this manner so that the energy consumption for driving the cutter bowl can be reduced. In addition to the shape of the cutter blades, the shape of the respective support or carrier body can also have a positive influence on the desired conveying effect on the product.

[0040] The user is given the possibility by means of the solution in accordance with the invention to change the geometric arrangement of the blades and to adjust said arrangement to the product to be treated, so that influence can be made on the quality and quantity of the fine comminution on site. A further advantage that needs to be stressed concerning the use of the support or carrier body is the fact that with the multiple fastening of the blades to the carrier system the cutter blades themselves can be formed in a simpler and more cost-effective way, which represents a considerable advantage of the invention in addition to reducing the risk of breakage of the blades.

[0041] In the illustration according to FIG. 1, the region of the cutter bowl 1 which is not shown in closer detail is designated with the reference numeral 1. The actual comminution device protrudes into the cutter bowl 1, which comminution device comprises a blade drive shaft 4 which has a hexagonal cross-section for example.

[0042] The upper illustration of FIG. 1 further shows the support arms 63, which extend angularly to the support or carrier body 6.

[0043] The support arms 63 engage in respective recesses 31 in the respective blade 3.

[0044] The recesses 31 are introduced in the respective blade ends radially on the outside.

[0045] Several blades 3, which are usually arranged as opposite pairs, are connected in a rotationally fixed manner to the blade drive shaft 4.

[0046] The blades 3 are supported in accordance with the invention by a carrier body 6, which acts in this respect as a support body.

[0047] An angular adjustability (angle ) is indicated in FIG. 1 in the upper illustration in the region of a blade receptacle 2 which is radially on the inside.

[0048] A blade receptacle 5, which is disposed radially on the outside, is formed in such a way that different engaging means are provided which allow the fixing of the different blade angles .

[0049] The comminution device according to FIG. 2 is based on a cutter bowl 1 into which the actual comminution device reaches, which comprises the drive shaft 4 with a plurality of blades 3.

[0050] Carrier bodies 6, which are arranged in a radiating manner relative to the drive shaft 4, each accommodate one drive blade 3.

[0051] Fixing of the drive blades 3, which are formed in the manner of an arc for example, occurs several times relating to the carrier body 6.

[0052] The carrier body 6 is formed in an angularly adjustable manner in the region of the blade receptacle 2, so that an adjusting angle a of the blades 3 can also be realised in this embodiment.

[0053] In the embodiment according to FIG. 3, an annular carrier body, i.e. a carrier ring 6, is provided.

[0054] The carrier ring 6 is connected via webs 61 to a central fastening surface 62.

[0055] In this embodiment too, advantageously arc-shaped blades 3 can be used, which are bolted together with the carrier ring 6 in the region of the front blade receptacle 5, i.e. radially at the outside.

[0056] The carrier ring 6 (see sectional view along the line A-A according to FIG. 1, upper illustration) can be provided with a shape which is capable of conveying the raw substance to be comminuted in order to increase throughput of the product and reduce the treatment time. In FIG. 3, upper illustration, the region of the cutter bowl is again provided with the reference numeral 1. It is further possible to influence the result of the comminution via an offset of the blades 3.