RU2184613C2 - Cutting unit of material grinding apparatus - Google Patents

Abstract

FIELD: food-processing and other branches of industry. SUBSTANCE: cutting unit has grid and knife. Grid is made in the form of disk with through openings arranged in concentric circles and blind openings. One of blind openings is positioned in the vicinity of outer and middle concentric circles and other blind opening is arranged in the vicinity of middle and inner circles. Cutting edges of knife blades are formed by intersected openings arranged in concentric circles common for grid through openings and having diameter corresponding to distance between diameters of these concentric circles. One pair of blades has openings arranged at an acute angle to knife working surfaces and other pair of blades has openings arranged at right angle to said surface. Blind openings provide for preliminary grinding of materials. EFFECT: increased efficiency and improved quality of obtained ground product, such as farce. 4 cl, 7 dwg

Description

 The invention relates to structural elements of devices for grinding materials and can be applied in food and other industries.

 Known cutting kit for a meat grinder, containing at least one rotating disk with several cutting beams, spatula-shaped in cross section. The cutting unit rotates between the fixed disks with inclined through holes (1).

 The disadvantage of the cutting unit is the low efficiency of the grinding process.

 The closest in technical essence and the achieved result is the cutting unit of the device for grinding materials, including a grate with inclined holes located in concentric circles, and a knife made of blades connected in the form of a cross, the cutting edges of which are formed by the intersection of the inclined holes located at the same concentric circles, as the holes of the lattice, and made with a diameter equal to the distance between the diameters of the concentric circles of the lattice (2).

 The disadvantage of this cutting unit is that it produces grinding in one stage, without preliminary grinding. During the grinding process, pieces of films and forks are formed, which reduce the grinding performance and reduce the quality of the stuffing.

 In the proposed cutting unit on the grate from the side adjacent to the knives, blind grooves are made in which large pieces of the product, for example meat, fall. Smaller pieces are cut from these large pieces. In this case, the blind grooves perform the function of a receiving grill, which is also installed in industrial tops (meat grinders) for preliminary grinding.

 The knife of the proposed cutting unit is made with blades with cutting edges formed by the intersection of inclined and perpendicular holes, while the blades are mixed with alternation, i.e. there are inclined holes on one blade, perpendicular on the adjacent blade. The edges of the blades formed by the openings inclined to the working surface of the knife cut off the meat pressed into the through and blind holes of the grill, after which the chopped meat is pushed out through the through holes, and the meat from the blind holes is captured by the chopped meat rotating together with the knife and gets into the through holes.

 The edges of the blades formed by holes located in a plane perpendicular to the working surface of the knife are designed to hold in front of them difficult to grind pieces of meat - tendons, films, intermediate tissue, etc. so that these difficultly chopped pieces of meat, rotating together with these blades, are crushed and passed through the through holes.

 The essence of the claimed invention lies in the fact that in a known cutting unit containing a grill with holes located in concentric circles, and a knife made of connected and in the form of a cross of the blades, the cutting edges of which are formed by the intersection of inclined holes that are located on the same concentric circles, that the holes of the lattice are made with a diameter equal to the distance between the diameters of the concentric circles, on the side of the lattice facing the knife, a blind hole is made, the cross vayuschee ce work area.

 The aforementioned blind hole is spaced into two coaxial holes located on the plane of the lattice with the possibility of one of them overlapping the area of the holes located in the outer and middle concentric circles, and the other - the inner and middle.

 Mentioned blind holes are made round.

 The knife includes additional blades, the cutting edges of which are formed by holes located in a plane perpendicular to the plane of location of the working surface of the knife, and identical to the mentioned inclined holes.

 Figure 1 shows the grill of the cutting unit, front view; figure 2 - lattice, side view; figure 3 - knife of the cutting block, front view; figure 4 is a knife, side view; FIG. 5 is a view A in FIG. 4; 6 is a section along BB in figure 5; Fig.7 is a section along BB in Fig.5, rotated.

 The cutting unit contains a fixed grill and a movable knife.

 The lattice is a disk 1, in which through holes 2 are made, located on concentric circles 3, 4. 5. Also on the disk 1 there are coaxial blind holes 6, 7, the first of which overlaps the zone of holes located on circles 3, 4, and the second is 4, 5.

 A blind hole can be one, there can be two or more, they can be of various shapes, different sizes. A necessary condition is that these blind holes overlap the working area of the grating, i.e. the zone of holes 2 located along all concentric circles 3, 4, 5.

 The knife represents blades 9, 10, 11, 12 connected in the form of a cross 8 with cutting edges formed by the intersection of holes that are located on the same concentric circles as the holes 2 of the grill and are made with a diameter equal to the distance between the diameters of the concentric circles 3 , 4, 5. On the blades 9, 10, the edges 13 are formed by holes located at an acute angle 14 to the working surface of the knife 15, i.e., inclined holes. On the blades 11, 12, the edges 16 are formed by holes located at right angles 17 to the working surface of the knife 15.

 The cutting block assembly is installed in the meat grinder in the same way as the cutting block of the meat grinder according to GOST 4025-83.

 When the knife rotates, the blades 11, 12 with the edges 16 of the holes perpendicular to the knife surface 15 drive 16 holes and partially feed the product, which enters the blind holes 6, 7; the following blades 9, 10 with inclined cutting edges 13 cut the product pressed into the holes, cut small portions, which move further with the next blade 11 or 12 with a perpendicular edge.

 The presence of blind holes 6, 7 provides preliminary grinding, which in turn eliminates clogging of the lattice, winding unmilled hard to grind components, such as veins and films of meat, on a knife.

 The combination and the cutting block of the grill with blind holes and the knife with blades with alternating inclined edges that are perpendicular to its working surface ensures high productivity and quality of the prepared meat.

Sources of information
1. The application of Germany 3215950, CL B 02 From 18/36, 1983

 2. USSR copyright certificate 1768297, cl. B 02 C 18/36, 1991

Claims (3)

 1. The cutting unit of the device for grinding materials, including a grate with holes located in concentric circles, and a knife made of two pairs of blades connected in the form of a cross, the cutting edges of which are formed by the intersection of holes located along the same concentric circles as the holes of the grate , and made with a diameter equal to the distance between the diameters of the concentric circles, and the cutting edges of one of the pairs of blades formed by the intersection of inclined holes, different That the cutting edges of the second pair of blades are formed by the intersection of openings arranged in a plane perpendicular to the plane passing through the working plane of the knife and the knife on the reverse side of the lattice has at least one blind hole, overlapping its working zone.  2. The cutting unit according to claim 1, characterized in that on the side of the grill facing the knife there are two blind holes placed on one axis with the possibility of overlapping by one of them the area of holes located on the outer and middle concentric circles, and the other on the inner and average.  3. The cutting unit according to paragraphs. 1 and 2, characterized in that the blind holes are made round.

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