SU727223A1 - Disc mill - Google Patents

Description

I

The invention relates to devices for grinding various materials, mainly cereals, and may find application in feed mills, flour mills and large plants.

A multistage disk mill is known, made in the form of several pairs of grinding discs, one of which is movable and one stationary, mounted on a vertical drive shaft in a common casing and having gaskets gradually decreasing from top to bottom teeth mi 1.

The disadvantages of this disk mill include low productivity, high energy intensity and poor quality of the ground product due to overgrinding.

A disk crusher is known, comprising rotating and stationary disks on which cutting edges are mounted, the cutting edges of the fixed disk being interconnected by partitions constituting a closed-contour zigzag edge with the edges, which together with Po2

on the inside of the contour, the top of the rotating disk forms a channel for directing the product to be crushed to the site of grinding, and on the outside - channels for removing the crushed product 2.

This crusher has a short life and does not allow the degree of crushing of the product to be adjusted.

The aim of the invention is to increase the durability of the crusher and to control the degree of crushing of the product.

This goal is achieved by the fact that a disk crusher comprising a housing, rotating and stationary therein

discs with cutting elements, the cutting elements of the fixed disk are interconnected by partitions, the loading and unloading nozzles and the drive are provided with a plate attached with a gap to the rotating disk on its lower side and having the ability to move along the disk axis, and the cutting elements of the rotating disk are made plate knives, one end of which is mounted in the slotted disk and the other rests on the plate.

The slots are angled to the axis of the disk and its radii.

FIG. 1 shows a sectional crusher; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one.

The disk crusher consists of a crushing chamber 1, on which a fixed disk 2 with a hopper 3 is fixed on top.

On the stationary disk 2 are the shearing ribs 4, which extend from the middle part to the periphery and are interconnected by partitions 5 constituting with the ribs 4 a zigzag closed contour which, together with the surface of the rotating disk 6, forms channels 7 for guiding the crushed product to the site of grinding, and from the outside — channels 8 for guiding the crushed product to an annular discharge bin 9 attached under the crushing chamber.

From below, an electric motor 10 is attached to the crushing chamber, on the shaft of which a rotating disk 6, having slots 11, is attached, in which the plate knives 12, one ends of the blades are installed in the slots of the disk, while others rest on the plate 13 attached to the spindle. A disk is mounted, for example, with the help of a pin 14. The slots 11 on the rotating disk are angled to the disk axis and its radii.

In the center of the disk 6 is the impeller 15.

Crushing chamber mounted on the frame 16.

The material to be crushed from the receiving bin 3 enters the rotatable disk 6, is captured by the blades of the impeller 15 and is fed into the guide channels 7, simultaneously filling the space between the cutting blades 12 on the disk 6.

When the disk 6 rotates, the rezhuzhch knives 12 intersect with the opposing ribs 4 at an angle that should not exceed the double friction angle of the ground material about the knives 12 and the ribs 4.

At the intersection, the knives 12 and the cut edges 4, like scissors, pinch the pieces of the material being crushed together and cut them. In this case, the cut particles will be no larger than the height of the knife 12 above the disk b in total, with a gap between the cutting edges of the knives 12 and protivorezhnyh fins 4. Thus, the grinding of the material occurs mainly due to the sliding cutting between the knives 12 and the ribs 4.

The cut particles of the required size are not subjected to grinding more than by grinding, and immediately under the action of centrifugal force through the channels 8 are thrown into the discharge bin 9.

For grinding the degree of grinding of the product, the height of the knives above the disk is changed. Changing the height of the knives is done by changing the distance between the plate 13 and the disk 6, for example, by moving the plate 13 along the studs 14, fixing it on the studs in the required positions with nuts.

Claims (2)

1.Disc crusher, containing a casing, rotating in it  and fixed disks with cutting elements, and the cutting elements of the fixed disk are interconnected by partitions, loading and unloading pipe and drive; characterized by the fact that g in order to increase the durability of the crusher and to ensure the regulation of the degree of crushing of the product, the crusher is equipped with a plate attached with a gap to the rotating disk on its lower side and having the possibility of movement along the axis 5 of the disk, and the cutting elements of the rotating disk are made in the form of plate knives, one ends of which are mounted in the slits of the disk, while others rest on the plate. 2. A disk crusher according to claim 1, characterized in that the slits are at an angle to the axis of the disk and its radii. - Sources of information taken into account during the examination. 1. USSR Author's Certificate 5 No. 146174, cl. B 02 C 7/08, 1961. 2. USSR author's certificate number 426694, cl. B 02 C 7/08, 1971 (prototype). sixteen " F (L i 15 P 2 P