SU1694205A1 - Grinding arrangement - Google Patents

Abstract

The invention relates to devices for grinding materials with a fibrous structure, preferably food raw materials. The aim of the invention is to improve the quality of grinding. The device includes a housing with a hopper 15, a drive mechanism, the vertical shaft 5 of which is installed in elastic supports and provided with unbalance. as well as a movable cone 9 located inside a fixed cone 13. The device is equipped with a grid 20 fixed on the lower edge

Description

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. The invention relates to a grinding technique and can be used to process materials with a fibrous structure, preferably a food grade.

The aim of the invention is to improve the quality of grinding.

Figure 1 shows the grinding device, a general view; figure 2 - section -A in figure 1; Fig.3 is a section BB in Fig.2.

The grinding device comprises a bed 1 with an electric motor 2 fixed on it 2. The shaft of the electric motor 2 is coupled through a horizontal shaft coupling 3. The drive transmission mechanism is a helical pair 4, the worm K being integral with the vertical shaft 5. The shaft 5 is mounted in the supports, the upper throat support 6 is provided with springs 7. Adjustable unbalance 8 is mounted on the shaft 5. The movable cone 9 is connected to the shaft 5 by means of a spherical bearing 10. The cone 9 is equipped with armor 11 and a cover 12. The fixed onus 13 is installed inserted by means of a thread in the pallet 14, provided with a feed funnel 15 and armor 16. In the pallet 14 a discharge pipe 17, a groove 18 and a horizontal screen 19 are installed. A screen 20. A screen 19 and a grid 20 are installed at the lower edge of the cone 9 under the discharge slot. moving contact with the counter parts are fitted with rubber seals.

The grinding device operates as follows.

The rotor of the electric motor 2 drives the shaft 3, which, through a screw gear 4, rotates the vertical shaft 5. The unbalance 8, rotating together with the shaft 5, creates a centrifugal force deflecting the shaft 5 from the vertical axis, which allows the spring-loaded support 6. The oscillations of the shaft 5 through the spherical bearing 10 are transmitted to the movable cone 9. The product to be ground, falling

in the gap between the cones 9 and 13, it perceives vibratory shock-shear loads, due to which it collapses and spills down the gap. Go out

the discharge gap between the cones, the crushed product falls on the grid 20, which vibrates together with the cone 9. Under the action of vibration, the product is sifted through the grid on which

large fibrous inclusions remain. By virtue of the fact that the cone 9 performs a slow precessional movement, the fibrous inclusions move along with the net, are captured by the groove 18 and are withdrawn from the cavity of the shredder. The isolated finely divided product is vibrated through the discharge pipe 17 under the action of vibration. Screen 19 serves to form a zone on grid 20

guaranteed separation, i.e. eliminates ingestion of fine product in the chute 18.

Claims (1)

The design of the device makes it possible to combine in one machine the technological procedures - grinding and classification. Separation of low-value fibrous structures of the products directly in the cavity of the shredder allows to significantly improve the quality of the crushed materials, in particular, sponge. The invention The device for grinding mainly multicomponent materials with a fibrous structure, comprising a housing with a feed funnel and a tray, fixed and internal movable cones, forming a working chamber with a discharge slot, under which the screening mesh is placed, as well as unbalance A drive, characterized in that, in order to improve the quality of grinding, the mesh is fixed on the lower edge of the inner movable cone, and the pallet is provided fixed above the screening mesh gutter and horizontal screen for unmilled material. Aa U nineteen schP  19 / C 9 Fig.Z 18