SU1301486A1 - Mill - Google Patents

Abstract

The invention relates to roller mills and improves the efficiency of grinding rubber in them. The mill contains drive rolls 1 and 2, interacting with a movable plate 3 horizontally mounted on an elastic base with protrusions 4 on the sides located between the shelves of C-shaped clamps 7. Moreover, the distance a between the shelves exceeds the height of the protrusions 4 by an amount less than specified particle size of the finished product. Rubber is measured in two stages: between rollers 1 and 2, and then in the gap between the rollers and plate 3. 1 sludge. nateriaa (L

Description

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The invention relates to the grinding of materials of small hardness, mainly rubber, and can be used in the regenerative industry.

The purpose of the invention is to increase the efficiency of grinding rubber.

The drawing shows the structural scheme of the proposed mill.

The roller mill contains mounted paired corrugated rolls 1 and 2 rotating with friction in opposite directions, a corrugated plate 3 with protrusions 4 mounted on previously compressed elastic shock absorbers in the form of springs 5, a discharge funnel 6. The protrusions 4 are placed between the shelves-shaped locks 7, with the distance a between the shelves of the retainer 7 exceeding the height b of the protrusion by an amount not exceeding the particle size of the finished product

The gap between the rolls and the gap between. each of the rolls and the plate is determined by the properties of the material to be ground and the requirements for the particle size distribution of the finished product. For example, when grinding rubber of one hardness to a final grain size of 0.5 mm in the range of 0.1-0.4 mm, and when grinding a grain of 1 mm - in the range of 0.3-0.5 mm.

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Elastic shock absorbers can be made in the form of elastic linings.

The mill works as follows.

The source material is fed by gravity to the interaction zone of the rolls 1 and 2, where the preliminary crushing takes place, as on known crushing rollers, then forcibly

Compiled by L. Chubukova Editor M. Blanan Tehred L. Serdyukova Proofreader I. Erdeyi

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VNISHI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

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due to the backwater created by the rolls of the rolls, it is guided by two flows into the zones of interaction of the rolls 1 and 2 with the plate 3 to the second grinding stage, from where the finished product enters the discharge funnel 6. The plate 3 is pressed down by the spreading force of the material flows .

The pressing of the slab, determined by the distance a between the retainer shelves, does not exceed the particle size of the finished product, which guarantees its required grain size distribution.

Installing the plate on an elastic base (elastic shock absorbers) ensures a constant compression of the flows of the material being crushed to the rolls and its grinding in a pre-stressed state, which reduces energy consumption.

Claims (1)

Invention Formula A mill containing drive rolls interacting with a horizontally mounted movable plate made with cavities to accommodate the lower rolls and with a cusp located between them, characterized in that, in order to increase the efficiency of grinding rubber, it is provided with a gap limiter between the movable plate and rolls, made in the form of protrusions on the sides of the movable plate and interacting with them -shaped retainers, the distance between the shelves of each of which exceeds the height of the protrusions by Inu is smaller than a given particle size of the finished product, and the movable plate is made with an elastic base.