RU2113280C1 - Roller machine - Google Patents

Abstract

FIELD: flour milling, elevator and combined fodder industries. SUBSTANCE: machine has cross-shaped mechanism which maintains interroller clearance of approach-pushing aside of rollers. Two ends of this mechanism have movable connection to bodies of bearings of two fast-rotating stationary secured rollers. Common axle of cross-shaped mechanism is aligned with axle of slowly-rotating movable roller. Manufacturing interroller clearance is maintained by controlled device positioned in cross-shaped mechanism between rollers. EFFECT: enhanced milling. 4 cl, 3 dwg

Description

 The invention relates to a device for grinding bulk products and is used in flour-mill elevator-feed, salt and other industries.

 Known designs of roller machines [1, 2, 3], consisting of a pair or more grinding rollers, feed and distribution rollers, and automatic control system for the dump-dump of grinding rollers.

 As practice and the requirements of modern industrial development have shown, the existing designs of 3M, 3M2, BV, BV2, A1-BZN, A1-BZ-2N roller machines, etc. have the following disadvantages: one product pass, increased metal consumption, increased specific energy consumption , there is no device of a dump-dump of rollers for the three-roll machine.

 The aim of the invention is to increase the number of passes of the product, reducing the metal intensity of the roller mill, reducing the specific energy consumption during grinding, the creation of three or more rollers and the device dump-dump for him.

 This goal is achieved by the fact that in the three-roll machine the mechanism for maintaining the roll gap and the roll dump is made in the form of a movable cruciform mechanism, in which two ends are mounted movably on the bearing housings of two rapidly rotating stationary fixed rollers, the common axis coincides with the axis of the slowly rotating movable roller, moreover, the technological rolling gap is supported by a control device located in the cross-shaped mechanism between the rollers. The cruciform mechanism itself is mounted on bearings, with the possibility of rotation. The technologically necessary working inter-roll gap is supported by a device with a height-varying device installed in the spacer in the cruciform mechanism. Each shoulder of the cruciform mechanism is mounted on bearings with a gap that allows in extreme conditions to break the parallelism between the rollers.

 In FIG. 1 - 3 shows a roller machine with a cross-shaped device. The machine consists of two identical halves, each of which works independently.

 In FIG. 2 - 3 shows a roller machine (0.5 part, because the roller machine consists of the same two halves): the upper stationary fast-rotating roller 1, the lower stationary fast-rotating roller 2, the slowly rotating mobile roller 3, the shoulder of the cross-shaped mechanism for the upper fast-rotating stationary roller 4 with a spacer 5, a shoulder of the cruciform mechanism for the lower rapidly rotating roller 6 with a spacer 5, a device for maintaining a working technologically defined inter-roll gap 7, which It is made up of a top part with a screw 8 and a bottom part with a thread 9, a cross-shaped bearing for the upper quick-rotating drum 10, a cross-shaped bearing for the lower fast-rotating roller 11, gaskets 12 and the roller bearing 13.

 Rollers 1, 2 and 3 consist of a barrel with trunnions pressed into it from both sides. Barrels are cast from two layers of cast iron. The top layer is harder, wear resistant and is the working layer. A work surface is applied to it, which is involved in grinding the material. The trunnion is made of steel 45 and serves as a support during grinding.

 The cruciform mechanism 4 and 5 is made of a sheet or bar of a certain shape and is intended to form working conditions for the production of grinding in three or more rollers.

 The spacer force is created using the spacer device 6, which may be a four-arm lever, as shown in FIG. 1, or spring, etc.

 To maintain the working gap between the rollers, a device 7 is intended, which consists of an upper part with a screw 8 and a lower part with a thread 9, made of steel or other material. The bearing housings 10 and 11 of the cruciform mechanism are made of steel or other material. The gasket 12 is made of bronze or cast iron or their substitutes and is designed to reduce friction between the cross-shaped mechanism bearing and the roller bearing housing 13. The rollers 14 and 15 are designed for uniform distribution of the product along the entire length of the working inter-roll gap.

 Roller machine operates as follows.

 From the rollers 14, 15, the product enters the inter-roll gap where, as a result of rotation of the rollers 1 and 3, it compresses and breaks at different speeds, i.e. grinds to a predetermined value. The secondly partially ground product comes into a working inter-roll gap between rollers 3 and 2, where the product is secondly ground to a predetermined size.

 If, by some chance, a metal object (bolt, nut, nail) enters between rollers 1 and 3, as well as 3 and 2, then the gap between rollers 1 - 2 and 2 - 3 will increase sharply, since the force on the spacer 5 will be greater than technologically specified, and the object passes through a sharply increased gap. As soon as a foreign object slips through, the rollers 1, 2 and 3 will fall back on their place and the working inter-roll gap will be the same, which is fixed by device 7.

 This application does not address the issue of automatic roll-off dump, as it is considered in the copyright certificate N 1729029.

 As calculations, experiments and work of rollers have shown, the proposed roller machine has the following advantages: reduced power consumption, reduced metal consumption, two product passes, simplicity and reliability of the design.

Literature
1. Afanasyev P.A. Flour mills. St. Petersburg - Moscow. Partnership publication Wolf M.I., 1883.

 2. Sokolov A. Ya., Zhuravlev V.F. et al. Technological equipment of grain storage and processing enterprises. -M .: Kolos, 1984.

 3. Timushkin N.V. et al. Roller mill. Copyright certificate N 1729029.

Claims (4)

 1. Roller mill, comprising a housing in which a pair of grinding rollers and an automatic control system of the machine are located, characterized in that the mechanism for maintaining the inter-roller gap of the roll-dump of the rollers of the automatic control system of the machine is made in the form of a cross-shaped mechanism, in which two ends are movably fixed on the bearing housings of two rapidly rotating stationary fixed rollers, the common axis of the cross-shaped mechanism coincides with the axis of the slowly rotating movable roller, and in Vuh other ends of the cruciform mechanism arranged devices producing technologically required pressure between the rollers, wherein the gap is maintained Technology mezhvaltsovy adjustable device located crosswise mechanism between the rollers.  2. The machine according to claim 1, characterized in that the two ends and the common axis of the cruciform mechanism are rotatably mounted on the roller bearings.  3. The machine according to claim 1, characterized in that the technologically necessary working inter-roll gap is supported by a device with a height-varying device between the rollers in the cross-shaped mechanism.  4. The machine according to claim 1, characterized in that each branch of the cross-shaped mechanism is mounted on bearings with a gap that allows under extreme conditions to change the parallelism between the rollers.

Images