RU2545653C1 - Rotary crusher - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: rotary crusher refers to loose product crushing devices and can be used in food industry or in fodder production. The crusher comprises a case-stator, a drive rotor, receiving, crushing and unloading chambers, a loading hopper. The inner stator surface and the rotor surface are provided with corrugated surfaces able of crushing the raw product. The corrugated surface on the stator is made in the rotor rotation direction from the receiving chamber to the unloading one. The directrix of the stator corrugated surface is set from the receiving chamber in angular spacing of not more than 90°, and the stator corrugated surface is made on one or more separate corrugated elements able of temporary attachment to the stator and provided with the possibility to change the distance between the working surfaces of the stator corrugated element and the rotor.

EFFECT: crusher allows for the optimisation of crushing process.

6 dwg

Description

FIELD OF THE INVENTION

Rotary crusher refers to devices for grinding bulk product and can be used in the food industry or in feed production.

State of the art

Known rotary crusher (see patent for the invention of the Russian Federation No. 2205694, IPC B02C 13/06, rotary crusher), consisting of a housing-stator and placed in its cavity drive rotor, receiving, crushing, discharge chambers and connected to the stator loading hopper, moreover, the crushing chamber is configured to use the rotor in the crushing of the original product.

Known rotary crusher (see patent for the invention of the Russian Federation No. 2105609, IPC B02C 13/02, feed crusher), consisting of a stator housing and a drive rotor located in its cavity, a receiving, crushing, discharge chambers and a loading hopper connected to the stator, moreover, the crushing chamber is made with the possibility of using the rotor in crushing the initial product by means of its mechanical effect on the crushing material.

Disclosure of invention

The rotor crusher consists of a stator casing mounted on shock-absorbing pads, and a receiving rotor, a receiving, crushing, unloading chambers, as well as a loading hopper connected to the receiving chamber, the inner surface of the stator and the surface of the rotor are provided with corrugated surfaces made with the possibility of crushing the initial product, while the guide corrugated surface of the stator is placed from the receiving chamber in an angular interval not exceeding 90 °, and the corrugated surface of the st torus may be formed on a separate corrugated member to temporarily secure it to the stator and with the possibility of changing the distance between the working surfaces of the corrugated member stator and rotor. There can be more than one corrugated elements fixed to the stator.

Placing the corrugated surfaces of the stator and rotor in the first quarter of the circle in the direction of rotation immediately from the receiving chamber in an angular interval sufficient for the destruction of the material eliminates the subsequent destruction of the already destroyed material on the way to its further movement to the discharge chamber, which reduces the formation of dusty and substandard fine fractions in the final product .

The possibility of fixing a removable corrugated element to the stator can improve the efficiency of the crusher and its maintainability. In particular, to select corrugated elements according to the strength of the material of the element, according to the structure of its working surface, to replace the corrugated element when it is worn, etc.

The possibility of fixing a removable corrugated element allows you to change the distance between the working surfaces of the stator and rotor, for example, the use of gaskets allows you to set the optimal distance between these surfaces depending on the size of the destroyed product and the required size of the final product.

The establishment of several corrugated elements in a row allows you to optimize the destruction zone, increasing, or vice versa, reducing its size due to the number of installed corrugated elements. In addition, the installation of corrugated elements with different working surfaces, for example, from coarse fracture to less, allows you to optimize the fracture process in terms of energy consumption.

All this increases the efficiency of the crusher.

Brief Description of the Drawings

Figure 1 shows a General view of the crusher;

figure 2 shows a cross section of a crusher;

figure 3 shows a cross section with a corrugated element;

figure 4 shows the gasket;

figure 5 shows a cross section with a corrugated element and a gasket;

figure 6 presents a cross section with two corrugated elements.

The implementation of the invention

A rotary crusher 1 driven by an electric motor 2, mounted coaxially on a platform 3 with shock absorbing gaskets 4 (Fig. 1), consists of a stator housing 5 and a driving rotor 6, a receiving 7, a crushing 8, a discharge chamber 9 and placed in its cavity also a loading hopper 10 connected to the receiving chamber 7 and secured to the stator by bolts 11, the inner surface of the stator and the surface of the rotor provided respectively with corrugated surfaces 12 and 13, made with the possibility of crushing the initial product, and the guide the corrugated surface of the stator is placed from the receiving chamber 7 in an angular interval not exceeding 90 ° (Fig. 2), the corrugated surface of the stator can be made on a separate corrugated element 14, bolted 15 to the stator 5 (Fig. 3), and to reduce the distance Δ between the working surface of the corrugated element 14 and the rotor 13 to Δ ₁ <Δ under the corrugated element 14 is fixed gasket 16 (figure 4) of the required thickness (figure 5).

On the stator 5 are fixed by bolts 17 and 18 two sequentially placed corrugated elements 19 and 20 (Fig.6).

From the feed hopper 10, crushing material (not shown), for example wheat, passes through the receiving chamber 7 into the crushing chamber 8 between the corrugated surfaces of the stator 12 and the rotor 13, where crushing takes place. The crushed material moves along the side surface of the stator during rotation of the rotor 6 and under the influence of gravity to the discharge chamber 9. The process of movement of the source and crushed material is shown by arrows in figures 1 and 3.

The placement of the corrugated surfaces of the stator 12 and the rotor 13 in the first quarter of the circle in the direction of rotation of the rotor (shown by the arrow, Fig. 2) immediately from the receiving chamber in an angular interval sufficient for the destruction of the material at α≤90 °, eliminates the subsequent destruction of the already destroyed material in its path further movement to the discharge chamber 9, which reduces the formation of dusty and substandard fine fractions in the final product. The angular characteristic α of the extent of the fracture zone depends on many factors (the shape of the corrugated surface, the rotor speed, the size of the starting material, and so on) and can be established experimentally in each case.

The possibility of fixing a removable corrugated element to the stator can improve the efficiency of the crusher and its maintainability. In particular, the selection of corrugated elements according to the strength of the material of the element, the structure of its working surface, it is possible to replace the corrugated element when it is worn, etc.

The possibility of fixing a removable corrugated element allows you to change the distance between the working surfaces of the stator and rotor, for example, using gaskets and allows you to set the optimal distance between these surfaces depending on the size of the destroyed product and the required size of the final product.

The establishment of several corrugated elements in a row allows you to optimize the destruction zone, increasing, or vice versa, reducing its length due to the number of installed corrugated elements. In addition, the installation of corrugated elements with various types of working surfaces, starting, for example, from gross destruction to less, allows to optimize the destruction process and energy costs.

Claims (1)

A rotary crusher comprising a stator housing mounted on shock absorbing gaskets, a drive rotor, a receiving, crushing and unloading chamber, a hopper connected to a receiving chamber, and the inner surface of the stator and the surface of the rotor are provided with grooved surfaces configured to crush the original product, and the corrugated surface on the stator is made in the sector from the receiving to the discharge chamber in the direction of rotation of the rotor, characterized in that the guide reef the stator’s lenght surface is placed from the receiving chamber in an angular interval not exceeding 90 °, and the stator’s corrugated surface is made on one or more separate corrugated elements with the possibility of temporary fixing it on the stator and with the possibility of changing the distance between the working surfaces of the corrugated stator and rotor elements .

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