RU160138U1 - LABORATORY CRUSHER LABORATORY - Google Patents

Abstract

1. Laboratory roll crusher, including a loading hopper, a movable roller installed through an adjusting mechanism, a stationary roller installed through a spring block, a frame on which the roller housings are mounted, a receiving tank, electric motors and a crushing zone, characterized in that the torque from the electric motors it is transmitted to the rolls through belt drives with different gear ratios, which ensures slippage of one roll relative to another, in addition, fluoroplastic ones are introduced along the edges of the crushing zone overlays. 2. A laboratory roll crusher according to claim 1, characterized in that a clearance indicator is located on the movable roll body, and a ruler scale is located on the guide. Laboratory roll crusher according to claim 1, characterized in that the movable roller is fixed with screws and locking handles located on the rails in the vertical direction.

Description

The proposed crusher refers to laboratory-class equipment, will find application in various industries, including: mining, metallurgy, construction and pharmaceutical, as well as during development work in universities and research institutes.

The principle of operation of the roll crusher is based on the abrasion (simultaneous compression and shear deformation) of the material between the rollers rotating towards each other. The coarseness of the crushed material is determined by the size of the gap between the rolls, the preload force of the stationary roll and the physical properties of the material.

There are various technical solutions in this area.

Thus, the invention RU No. 2323298 (IPC B02C 4/00, published. 04/20/2008) for a roll crusher is known. The invention relates to the field of mining and can be used for crushing and classification of coal in mines, coal mines and warehouses. The crusher contains a stationary body, a loading hatch, a working body of the roll type with cleaving teeth and classification gratings. Chipping teeth are mounted on the shaft tangentially to its surface and are additionally equipped with protective ribs. The classification gratings are installed in the crusher body as follows: one of the gratings is mounted above the shaft at an angle of 45-60 ° to the vertical so that when the shaft rotates, the gap between its lower edge and the shaft is 5 to 15 mm, and the opposite grate is installed at an angle 30 ° to the vertical, and its lower edge is lowered under the crusher shaft in such a way that when the shaft rotates, the gap between it and the lower edge of the grate is from 5 to 15 mm. The invention reduces the regrinding of the starting material.

Known utility model RU No. 3698 (IPC: B02C 4/28, B02C 4/42, published. March 16, 1997) for a roll crusher, which includes a housing, at least two rolls, one of which is mounted on a swing frame pivotally connected to housing through the axes and through the device for damping and regulation of the gap, roll drives, including a gearbox. At the same time, the drive of each roll is made in the form of a block suspended from the drive end of the roll shaft using the hollow output shaft of the gearbox and provided with a second support on the swing frame or crusher body.

The closest set of essential features to the proposed utility model is a roll crusher (see link http://mtspb.com/drobilki_valkovye/), which is selected as a prototype. Roll crusher DG 200 × 125 is designed for fine crushing of brittle materials of medium strength. It is used mainly for the preparation of ore and non-metallic raw materials for research before grinding operations or grinding of samples. The main disadvantages of the known designs:

- low productivity due to: inefficient capture of material particles; impact on the destructible particle only by compression force;

- laborious cleaning of the crusher from the material;

- lack of a scale indicating the clearance between the rolls;

- spillage of material in the end zones of the crushing chamber.

The objective of the proposed utility model is to create a roll crusher (laboratory) with improved characteristics, due to which the disadvantages of the known structures will be eliminated.

The technical result of the proposed utility model is to improve the characteristics of the roll crusher (laboratory).

The technical result is achieved by the fact that in the roll crusher, which includes the loading hopper, a movable roll installed through an adjusting mechanism, a stationary roll installed through a spring block, a frame on which the roll housings, a receiving tank, electric motors and crushing zone are fixed, torque from electric motors it is transmitted to the rolls through belt drives with different gear ratios, which ensures “slipping” of one roll relative to another. In addition, fluoroplastic overlays were introduced along the edges of the crushing zone.

Additional differences of the proposed utility model is that:

- a clearance indicator is located on the housing of the movable roll, and a ruler scale is on the guide;

- the movable roll is fixed with screws and locking handles located on the rails in the vertical direction.

The essence of the proposed utility model is illustrated in FIG. 1, which presents the proposed crusher, where:

1 - receiving capacity;

2 - screw;

3 - handle-lock;

4 - adjusting mechanism;

5 - clearance indicator;

6 - ruler scale;

7 - fixed roll;

8 - movable roll;

9 - fluoroplastic overlay,

10 - loading hopper;

and FIG. 2, which shows the movable and stationary rolls of the proposed crusher, where

11 - spring block.

The roll crusher includes a loading hopper 10, a movable roller 8, installed through an adjusting mechanism 4, a stationary roller 7, installed through a spring block 11, a frame on which the roll housings 7 and 8, a receiving tank 1, electric motors and a crushing zone are fixed. In this case, the torque from the electric motors is transmitted to the rolls 7 and 8 through belt drives with different gear ratios, which ensures “slipping” of one roll relative to another. In addition, the edges of the crushing zone introduced fluoroplastic lining 9.

On the housing of the movable roll 8 there is a gap indicator 5, and on the guide there is a scale of a ruler 6.

The movable roller 8 is fixed with screws 2 and handle-clamps 3 located between the rails in the vertical direction.

Operating principle

The material is fed into the funnel of the loading hopper 10, from where it enters the rollers 7 and 8 rotating towards each other. Between the rollers 7 and 8, the particle receives a single “point” effect and passes into the discharge zone.

The change in the size of the crushing product is made by adjusting the size of the gap between the rollers 7 and 8 and the compression force of the springs.

When an incomplete body is caught between the rollers 7 and 8, it squeezes the roller on the springs and passes into the receiving tank 1, which prevents the crusher from breaking.

The crushing product is collected in a receiving tank 1 located under the rollers 7 and 8.

The advantages of the proposed utility model over well-known solutions.

The rotation speed of one of the rolls has been changed, which provides more efficient crushing due to the impact on the particles not only of the compression force, but also of compression with shear, as well as more efficient trapping of material particles.

A clearance indicator is located on the body of the movable roll, and a ruler scale is located on the guide, which allows you to precisely set the gap between the rolls.

Fixing the movable roll with screws and locking knobs located between the rails in the vertical direction, eliminates the offset of the roll when sampling gaps in the thread.

Unloading is carried out through the receiving tank, which simplifies the cleaning of the crusher and, as a result, increases the purity of the sample, reduces the degree of dust in the unloading area of the material.

Fluoroplastic overlays were introduced along the edges of the crushing zone, which reduces the likelihood of material spilling along the ends of the rolls.

Thus, the proposed crusher has improved characteristics, compared with known designs.

Claims (3)

1. Laboratory roll crusher, including a loading hopper, a movable roller installed through an adjusting mechanism, a stationary roller installed through a spring block, a frame on which the roller housings are mounted, a receiving tank, electric motors and a crushing zone, characterized in that the torque from the electric motors it is transmitted to the rolls through belt drives with different gear ratios, which ensures slippage of one roll relative to another, in addition, fluoroplastic ones are introduced along the edges of the crushing zone overlays. 2. Laboratory roll crusher according to claim 1, characterized in that a clearance indicator is located on the movable roll body, and a ruler scale is located on the guide. 3. Laboratory roll crusher according to claim 1, characterized in that the movable roller is fixed with screws and locking handles located on the rails in the vertical direction.

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