RU2017532C1 - Product grinder - Google Patents

Abstract

FIELD: mechanical engineering. SUBSTANCE: grinder has a body with a feed endless screw and a cutting mechanism which, in turn, has a knife and a screen. The screen is rotatable by a parallel crank mechanism, connected to the endless screw shaft through a gear train. EFFECT: improved structure. 2 dwg

Description

 The invention relates to the processing industry and can be used for grinding products in food and other industries.

 A known continuous-action machine for grinding meat, equipped with screw feeders and a cutting body formed by several successively arranged grids with cutting elements between them, made in the form of thin plates with holes and mounted on a roller that receives a circular motion.

 The disadvantages of the continuous machine are: the roller with the cutting elements fixed to it receives a circular motion from the lever through the eccentric, and for the eccentric to rotate, an additional device or a separate drive is needed, the grilles are fixed; at the moment of overlapping the grating openings with movable knives, the cutting process does not occur, which reduces the intensity of the cutting process.

 The closest in technical essence and the achieved positive effect is a meat grinder, in which the screw is placed, a grill is mounted on the screw shaft, fastened to the body, the shaft has a neck whose axis is eccentric to the shaft axis, the knife is freely mounted on the neck; when the shaft rotates, the neck translates the knife, which, blocking the opening of the grating with cutting edges, produces a cutting process.

 The disadvantages of the prototype are: the knife during cutting is shifted along the grating by the radius of the eccentric and cuts not over the entire area of the grate, but the neck on which the knife is mounted closes the central holes of the grate, which reduces the working area of the grate and, accordingly, productivity; there is no oncoming movement of the knife and lattice, since the lattice is fixed motionless, which reduces the intensity of the cutting process.

 The aim of the invention is to increase productivity, reduce energy consumption and improve the quality of the grinding product.

 To achieve this goal, the proposed device is equipped with a hinged parallelogram mechanism consisting of cranks, some ends connected through a gear block and a shaft with a screw, and others with a grill with the possibility of its relative movement, and the mechanism case has windows for the output of the grinding product.

 The mechanism informs the lattice of translational oscillations along circular paths in the opposite direction relative to the rotary knife.

 The proposed technical solution meets the criterion of "novelty and significant difference."

 Figure 1 shows a General view of the device; figure 2 is a section aa.

 The device for grinding products consists of a housing 1, in which a screw 2 is placed. A knife 4 is installed on the shaft 3 of the screw 2. By means of a nut 5, a prefix 6 is fixed to the housing 1, inside of which there is a hinged parallelogram mechanism of the grating drive, consisting of a shaft 7 installed disk 8. One end of the shaft 7 is connected to the shaft 3 of the screw 2 using a fork 9. At the second end of the shaft 7, a drive gear 10 is fixed, which rotates three interchangeable gears 11, mounted on three cranks 12 installed in the disk 8, on sliding bearings 13 Crooked Type 12 drives the grill 14 with bearings 15. The spacer sleeve 16 presses the grill 14 against the knife 4. The screw 17 presses the shaft 7 with the plug 9 onto the shaft 3 of the screw 2. The washer 18 is mounted on the screw 2, pushes the screw 2 with the knife 4 out of the housing 1 and presses the knife 4 against the grate 14. In the case of the set-top box 6 there are cutouts (windows) 19 for the output of the grinding product, which is initially in the hopper 20.

 The proposed device operates as follows.

 The grinding product is fed into the hopper 20, from it into the housing 1 and is pumped by the screw 2 into the cutting mechanism, here it is ground with a knife 4, cutting the product along the plane of the grating 14 and the crushed product leaves the windows 19. At the same time, the grating 14 from the hinged parallelogram mechanism receives translational oscillations along circular paths, in the opposite direction relative to the knife 4. The frequency of the relative rotation of the knife 4 and the lattice 14 is regulated by the sizes of gears 10 and 11.

 Oncoming rotational movement of the grill and knife can significantly increase the cutting speed and increase the productivity of the device. The ability to change the frequency of the relative movement of the knife and grill allows you to choose for each product modes of grinding.

 The oscillatory movement of the grate relative to the knife facilitates the cutting process and improves the quality of the product, since micro impacts of the knife’s high frequency on the product of grinding occur in the cutting zone, which facilitates the process of product destruction, resulting in reduced energy costs for the product grinding process.

 The translational movement of the lattice relative to the knife in combination with its rotational movement, significantly reduces the impact force of the knife during the cutting process, since the sliding movement of the knife reduces the cutting force, thereby reducing energy consumption.

Claims (1)

 DEVICE FOR GRINDING PRODUCTS, comprising a housing with a window for the exit of the grinding product, a feed screw with a shaft and a cutting mechanism consisting of a knife and a grill installed in it, characterized in that it is equipped with a hinged parallelogram mechanism of the grill drive, consisting of cranks, one ends connected by means of a block of gears with a screw shaft, and others - with a grill mounted for rotation, while the window is made on the side surface of a part of the housing with a cutting mechanism.

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