Grinding wheel with winding groove for food grinder

Abstract

The grinding wheel with winding grooves (3) for a mill relates to equipment used in the food industry. It is a grinding wheel for a mill with winding grooves, consisting of a cylindrical element with grooves (3) on its cylindrical surface (2). The paths of the grooves (3) correspond to the winding lines whose axis coincides with the axis (5) of the cylindrical surface (2). Such a grinding wheel according to the invention increases the grinding efficiency of products, such as food products. (For publication, see Figure 1 for abbreviations)

Description

Title of the invention: Grinding wheel with winding groove for food grinder Technical field of the invention

[0001] The present invention relates to equipment used in the food industry, in particular in the production of confectionery for the preparation of confectionery pastes, creams, chocolate pastes and candy fillings. Prior art

[0002] The prior art includes a granite roller – a grinding wheel consisting of a cylindrical stone element. The disadvantage of this design is the uninterrupted contact line between the cylindrical surface of the wheel and the bottom of the container, which prevents product particles from entering the grinding zone and consequently reduces grinding efficiency.

[0003] The most similar technical solution is a grinding wheel for a crusher, designed as a cylindrical stone element with grooves on its cylindrical surface. The technological problem with this design is the interrupted contact line between the cylindrical surface of the wheel and the bottom of the container, which makes it difficult to retain product particles in the grinding zone, thus reducing grinding efficiency. Description of the invention

[0004] The invention aims to remedy all or part of the disadvantages of the prior art by proposing in particular a solution to improve the efficiency of grinding products using grinding wheels for a crusher.

[0005] To this end, according to a first aspect of the invention, a grinding wheel for a grinder, preferably intended for the food industry, is proposed, the grinding wheel comprising a cylindrical body with at least one groove on a cylindrical surface of the cylindrical body, the grinding wheel being characterized in that the trajectory of the groove formed corresponds to a winding line, the axis of which coincides with the axis of the cylindrical surface, so as to increase the efficiency of the grinding.

[0006] According to one embodiment, the grinding wheel comprises a plurality of grooves on the cylindrical surface, the trajectory of each of the grooves formed corresponding to a winding line, the axis of which coincides with the axis of the cylindrical surface.

[0007] According to one embodiment, each groove extends along a helical winding line, with an axis collinear with the axis of the cylindrical surface.

[0008] According to one embodiment, the grinding wheel is made up of a cylindrical body of granite.

[0009] According to another aspect of the invention, it relates to a grinder, comprising a container configured to rotate around a vertical reference axis, the grinder being characterized in that it comprises at least one grinding wheel as described above configured to come into contact with a bottom of the container. Brief description of the figures

[0010] Other features and advantages of the invention will become apparent from the following description, with reference to the attached figure, which illustrates: • [Fig.1]: a view of a grinding wheel for a crusher, according to one embodiment of the invention. Detailed description of an implementation method

[0011] An embodiment of the present invention is illustrated in the drawing, in which [Fig. 1] shows the design of a grinding cylinder forming a millstone for a food grinder, the millstone being provided with winding grooves. In this embodiment, the grinder is configured for grinding foodstuffs, for example cocoa beans or nuts.

[0012] The grinder (also called a mixer or table refiner) in this embodiment allows the cocoa nibs and nuts to be ground, refined and conched to obtain a fine, silky paste full of aromas.

[0013] The grinder forms a mill equipped with stone grinding wheels designed to grind very finely (preferably down to 15 microns), homogenize and conch the ingredients.

[0014] The grinding wheel or cylinder 1 for a mill comprises a cylindrical body (preferably a straight circular cylinder) made of dense natural granite. The cylindrical surface 2 of the grinding wheel 1 has (externally) winding grooves 3 whose trajectories coincide with winding lines 4 whose axis 5 coincides with the axis of the cylindrical surface.

[0015] In other words, each winding groove follows a helical path with an axis coaxial with the axis of the (exterior) cylindrical surface of a cylindrical body of the grinding wheel. Naturally, the grinding wheel 1 comprises at least one groove 3, but may also comprise a plurality of grooves 3. In the case where the grinding wheel has several helical grooves 3 on its exterior cylindrical surface, each of these grooves 3 extends in a circular helix on the cylindrical surface of revolution of the cylindrical body, being concentric and coaxial.

[0016] Possible designs of a cylindrical grinding wheel involve different numbers of grooves, the geometry of their profile, the pitch of the winding grooves, their shape and direction, as well as the degree of alignment of the grooves with the winding lines. All variant embodiments of the invention have in common the fact that the trajectories of the grooves 3 formed, for example engraved, on the surface cylindrical of the grinding wheel, correspond to winding lines (helical) whose axis coincides with the axis of the cylindrical surface.

[0017] To manufacture the grinding wheel 1 for a crusher according to this solution, a cylindrical granite workpiece is used, which is clamped in a stone lathe so that the axis 5 of the workpiece lies along an axis of rotation of a spindle of the stone lathe. The rotation of the lathe motor is then transmitted to the cylindrical workpiece via a reduction gear and a clamping support. Next, a required number of grooves 3 with a predetermined profile and geometry are formed, for example engraved, on the cylindrical surface 2 of the workpiece, the trajectories of which coincide with associated winding lines 4 whose axis 5 coincides with the axis of revolution of the cylindrical surface.

[0018] The grinding wheel for the crusher is used by pressing a pair of grinding wheels 1. A grinding wheel is mounted on a granite base of a container or bowl so that the grinding wheels are equidistant from the axis of rotation of the container, along which the axes of the grinding wheels remain fixed. In a particular configuration (not illustrated), the axes of rotation of the two grinding wheels (corresponding to the axes of revolution of the corresponding cylindrical bodies) extend horizontally and are collinear with each other, each grinding wheel extending on either side of the vertical axis of rotation of the container, that is, radially with respect to this vertical axis of rotation of the container. Thus, the circular base of the container defines an annular track around the axis of rotation on which each of the grinding wheels rolls, positioned at 180° to each other.

[0019] Next, the product to be ground is added to the container (for example, cocoa beans) and the container rotates, transferring the motion to the grinding wheels 1. The winding grooves 3 on the cylindrical surface 2 of the grinding wheels 1 modify the interrupted contact line between the cylindrical surface of the grinding wheel and the bottom of the container, which contributes to the retention of product particles in the grinding zone and to additional friction of the particles due to their movement along the axis of the grinding wheels. All these features increase the grinding efficiency of products with the grinding wheels for the mill.

[0020] Physical modeling has shown that improvements in product grinding efficiency are possible with different designs of winding grooves 3 on the cylindrical surface 2 of the grinding wheels 1, which differ in the number of grooves, the geometry of their profile, the pitch of the winding lines, the shapes and directions, and the degree of alignment of the groove trajectories with the winding lines.

[0021] Naturally, the invention is described above by way of example. It is understood that a person skilled in the art is able to carry out different embodiments of the invention without departing from the scope of the invention.

Claims

Demands

1. Grinding wheel (1) for a grinder, preferably intended for the food industry, the grinding wheel comprising a cylindrical body with at least one groove (3) on a cylindrical surface (2) of the cylindrical body, the grinding wheel being characterized in that the trajectory of the groove formed corresponds to a winding line, the axis of which coincides with the axis of the cylindrical surface, so as to increase the grinding efficiency.

2. Grinding wheel (1) according to claim 1, characterized in that it comprises a plurality of grooves (3) on the cylindrical surface (2), the trajectory of each of the grooves formed corresponding to a winding line, the axis of which coincides with the axis of the cylindrical surface.

3. Grinding wheel (1) according to claim 1 or 2, characterized in that each groove extends along a helical winding line, with an axis collinear with the axis of the cylindrical surface.

4. Grinding wheel (1) according to any one of the preceding claims, characterized in that it is made up of a cylindrical body of granite.

5. Crusher, comprising a container configured to rotate about a vertical reference axis, the crusher being characterized in that it comprises at least one grinding wheel (1) according to any one of the preceding claims configured to come into contact with a bottom of the container.

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