RU2213617C1 - Cutting unit of food-stuff grinding device - Google Patents

Abstract

FIELD: food-processing industry. SUBSTANCE: proposed cutting unit includes receiving, intermediate and outlet grates with knives located between them, Working edge of each hole of receiving grate is saw-tooth in shape. Cutting edges of knives and holes of intermediate grate are wavy in shape due to availability of transversal grooves on working surface of blades; each groove has form of taper recess; larger bases of these grooves adjoin each other; central part of knife and all blades are made integral. Provided in central parts of receiving, intermediate and outlet grates are circular slots. Inner surface of holes of outlet grate has at last one projection with sharp edges. EFFECT: increased productivity; improved quality of finished product; reduced power requirements. 9 dwg

Description

 The invention relates to devices for grinding food products, in particular to their structural elements, and can be applied in food and other industries.

 Known cutting unit of the device for grinding materials, including a lattice with inclined holes located in concentric circles, and a knife, the knife is made of blades connected in the form of a cross, the cutting edges of which are formed by the intersection of inclined holes that are located on the same concentric holes that and the holes of the lattice and are made with a diameter equal to the distance between the diameters of the concentric circles of the lattice (SU 1768297 A1, publ. 15.10.1992).

 The disadvantage of such a cutting unit is that in the process of grinding products in one stage, pieces of films and cores are formed, which reduce the productivity and quality of the resulting stuffing.

 The closest in technical essence to the invention is a cutting unit of a device for grinding food products containing a stationary receiving, intermediate and output lattices with central holes and placed between them knives with blades and central holes for mounting on a shaft (US 4358061 A, publ. 09.11.1982 )

 The disadvantage of this cutting unit is the insufficiently high productivity of the grinding process and the quality of the resulting meat.

 The objective of the invention is to increase the productivity of the process of grinding food products, the quality of the resulting meat and reducing the energy intensity of the grinding process.

 This task is achieved by the fact that in the cutting block of the device for grinding food products containing fixed receiving, intermediate and output lattices with central holes and knives placed between them with blades and with central holes for mounting on the shaft, the working edge of each hole of the receiving grill is sawtooth and the cutting edges of the blades of each knife and the holes of the intermediate lattice are wave-shaped, which is formed on the blades by performing across their working surfaces grooves, each of which has the shape of conical recesses adjacent to each other with large bases, the central part of the knife and all blades are made in one piece, and the central part of the knife and all blades form one surface, and the wave-like shape of the cutting edges of the holes of the intermediate lattice is formed by execution on their working surfaces of cylindrical grooves, the distance between the centers of which is less than their diameter, while in the Central part of the receiving, intermediate and output gratings corresponding to the center of the knife, on both sides concentric with the central hole to a depth of not more than 1/3 of the thickness of the grating, annular grooves are made, while on the working surface of the gratings, with the formation of an annular belt at the central hole of a width not less than the depth of the groove, and the inner surface of each hole of the outlet grating has at least one projection with sharp edges.

Figure 1 - shows a General view of the cutting block of the device for grinding food products,
figure 2 - receiving grill,
figure 3 - intermediate lattice,
figure 4 is a section along aa in figure 3,
figure 5 - output lattice,
figure 6 is a section along BB in figure 5,
in Fig.7 - node 1 in Fig.5 in an increase,
Fig.8 is a knife,
Fig.9 is a section along BB in Fig.8
The cutting unit of the device for grinding food products contains stationary receiving 2, intermediate 3 and output grilles 4 located in the housing 1. Knives 5 with blades 6 are placed between the grilles, the cutting edges 7 of the blades of each knife have a wave-like shape, which is formed by performing on the working surfaces of the blades 6 transverse grooves 8. Each groove 8 has the form of conical recesses adjacent to each other with large bases. This embodiment of the knife makes it double-sided. The central part of the knife and all blades are made in one piece, and the central part of the knife and all blades form one surface, which ensures high strength and durability presented to the knives.

 The working edge 9 of each hole 10 of the intake grill 2 is sawtooth. The cutting edges 11 of the holes 12 of the intermediate lattice 3 are made of a wave-like shape, which is formed by making cylindrical grooves on the working surfaces of the holes, the distance between the centers of which is less than their diameter, which ensures the formation of sharp cutting edges.

 The receiving, intermediate and output lattices and knives are made with central holes 13.

 In the central part of the receiving 2, intermediate 3 and output 4 gratings corresponding to the central part of the knife, ring grooves 14 are made concentrically to the central hole 13 of the gratings to a depth of not more than 1/3 of the thickness of the grating on both sides, while on the working surface of the gratings the central the holes 13 of the annular belt 15 with a width of not less than the depth of the groove 14. In this embodiment, the central part of the gratings works like a spring washer, which reduces the overheating of products by reducing their friction on the surface of the grate and knife, however, this groove depth is optimal and provides the requirements for gratings with strength and reliability in operation.

 The inner surface of each hole 16 of the output grill 4 has at least one projection 17 with sharp edges for the final grinding of products. For regrinding of sinewy or frozen products, it is advisable to perform protrusions of more than one or along the entire inner surface of the opening of the outlet lattice.

 Knives 5 with central holes 13 are mounted for rotation between the gratings on the shaft 18.

 The cutting unit is fixed in the housing 1 with a threaded nut 19.

 The cutting unit of the device for grinding food works as follows.

 Products to be ground, such as meat, fish, and others, including severely frozen ones, are fed into the loading nozzle (not shown conventionally) of the housing and are moved by a screw 20 to the openings 10 of the intake grill 2, the working edge of which is sawtooth, where the product is under pressure screw 20 is sawn into pieces. Next, the product enters the knife 5, to its sharp cutting edges, which are formed by performing on the working surfaces of the blades 6 transverse grooves 8 (in the transverse direction), each of the grooves 8 has the shape of conical recesses adjacent to each other with large bases.

 When the product passes through the grooves with constant pressure from the auger side, it is compressed and exited under high pressure to the cutting edges of the blades having a wave-like shape, and then to the sharp cutting edges of the holes of the intermediate grill 3 and to the subsequent knife 5 installed behind the intermediate grill. The final regrinding of the product is ensured by the sharp edges of at least one protrusion 17, made on the inner surface of each hole of the outlet grill.

 When grinding sinewy, very frozen (including in blocks) and other difficult to process products, protrusions are performed on the entire inner surface of each hole of the outlet grill.

 The technical result of the proposed invention is that due to the presence of sharp cutting edges along the entire path of the product promoted under the pressure of the screw, the product is effectively crushed, the productivity of grinding food is increased, their quality is reduced, the energy consumption of the grinding process of sinewy, including frozen blocks of products that are particularly difficult to grind.

Claims (1)

 The cutting unit of the device for grinding food products containing a stationary receiving, intermediate and output lattices with central holes and knives with blades placed between them and with central holes for mounting on the shaft, characterized in that the working edge of each hole of the receiving grill is sawtooth, and the cutting the edges of the blades of each knife and the holes of the intermediate lattice are wave-shaped, which is formed on the blades by making transverse grooves on their working surfaces, each of which it has the shape of conical recesses adjacent to each other with large bases, the central part of the knife and all blades are made integrally, the central part of the knife and all blades form one surface, and the wave-like shape of the cutting edges of the holes of the intermediate lattice is formed by making them work surfaces of cylindrical grooves, the distance between the centers of which is less than their diameter, while in the Central part of the receiving, intermediate and output gratings corresponding to the Central part of the knife, with about On both sides concentric with the central hole to a depth of not more than 1/3 of the thickness of the grating, annular grooves are made, while on the working surface of the gratings, with the formation of an annular belt at the central opening of the annular belt with a width not less than the groove depth, and the inner surface of each outlet of the outlet grating has , one ledge with sharp edges.

Images