RU2350391C1 - Vibration mill - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: vibration mill comprises housing with vibrator mounted flexibly on base. The housing consists of sections, each representing strip bent towards one side along straight lines located at an angle to the strip edges so as to form various-size equilateral and isosceles triangles alternating over the strip length. The bases of two equal isosceles triangles are located on both sides of the largest equilateral triangle. On both sides of the said equal isosceles triangles, there are bases of two equal isosceles triangles, on their sides being located two equal equilateral triangles with adjoining, by their bases, two equal isosceles triangles. There is equilateral triangle located on one of the aforesaid two equal isosceles triangles. The legs of smaller equilateral triangles differ from the legs larger equilateral triangles by identical linear magnitude. Note that free legs of the said triangles interconnect the sections.

EFFECT: expanded performances and higher efficiency.

2 cl, 9 dwg

Description

The invention relates to techniques for grinding solid materials and can find application in the construction, chemical and metallurgical industries, as well as in agricultural production.

Known vibration mill with a volumetric movement of the working chamber (Vibration processes and machines, volume 4, M., Mechanical Engineering, 1981, pp. 384-385.), Containing a camera with a vibrator resiliently mounted on the base.

A disadvantage of the known device is the lack of processing intensity and limited technological capabilities due to insufficient mixing intensity.

Closest to the proposed invention is a vibration mill containing an elastically mounted body with a vibrator (Equipment of the factories of the paint and varnish industry, Publishing House "Chemistry", Leningrad Branch, 1968, p. 371). A disadvantage of the known device is the insufficient intensity of grinding and limited technological capabilities due to insufficient intensity of mixing.

The technical result of the invention is the expansion of technological capabilities and increased productivity.

The technical result is achieved by the fact that in a vibration mill with a housing elastically mounted on the base with a vibrator, the housing is made of sections, each of which is mounted from a strip bent to one side in straight lines placed at an angle to the edges of the strip, with alternating formation along the length of the strip different in size equilateral and isosceles triangles, while on the two sides of the largest equilateral triangle, two identical isosceles triangles are located with their bases, from the side the sides of which are two identical equilateral triangles with two identical isosceles triangles located to them with their bases, on one of which an equilateral triangle is located, the sides of smaller equilateral triangles differ from the sides of large equilateral triangles by the same linear value, and the sections are connected to each other the other free sides of the mentioned triangles, and on the outer and inner surface of the body broken lines are formed and screw surfaces.

According to the patent literature not found a technical solution similar to the claimed, which allows us to judge the inventive step of a vibration mill.

The novelty of the proposal lies in the fact that along the inner surface of the mill body are formed broken oppositely directed helical lines and helical surfaces, which increases the intensity of mixing and interaction of the processed materials, as a result, productivity increases and technological capabilities expand, as well as the path of the material in the vibration mill is lengthened.

The novelty is due to the fact that the elements of which the case is assembled around the perimeter are different in area, shape and size, so the intensity and efficiency of grinding increases, expanding technological capabilities.

The novelty is also due to the fact that the pitch of the broken helix is variable, i.e. changes around the perimeter of the housing, which violates the stationary motion of particles of material and grinding media and expands technological capabilities.

The novelty of the proposal also lies in the fact that the cross-sectional area around the entire perimeter of the casing changes not only in shape but also in area, which provides alternate compression and expansion of the masses of the processed material in each casing cross section, which means increased productivity, grinding efficiency and technological expansion of opportunities.

The novelty of the invention lies in the fact that the elements from which the housing is assembled are not only inclined to each other, but also to the axis of symmetry of the housing, therefore, the compression ratio of the grinding media and the material being ground increases, and the grinding process is intensified.

The novelty also lies in the fact that the mill body is made of sections, the walls of which are not only inclined to each other, but also to the direction of the rotational movement of the material and grinding bodies moving under the influence of vibration in planes perpendicular to the passage section of the body, which complicates the paths of their movement and increases the intensity of their collisions and expands technological capabilities.

The invention is illustrated by drawings, where figure 1 schematically shows the proposed vibratory mill; figure 2 - case, top view; figure 3 is a section aa in figure 2; figure 4 - section of the body, axonometric projection; figure 5 is a strip with marked straight lines; figure 6 is a diagram of the assembly of the housing; Fig.7 is a section bB in Fig.2; in Fig.8 is a section bb in Fig.2; figure 9 is a cross section GG in figure 2;

The vibration mill (Fig. 1) consists of a bed 1, on which, using the springs 2, the housing 4 is resiliently fixed and provided with a vibrator 3. Loading and unloading devices are not shown in the drawings.

The housing 4 is mounted (figure 2, figure 3) from section 5 (figure 4), highlighted in figure 2 by triple lines 70-71-49-90-48-70. Section 5 is made of strip M (Fig. 4, Fig. 3), bent to one side along straight lines A, B, C, D, D, E, Zh placed at an angle to the edges of strip M with the formation of alternating different sizes of equilateral 6, 7, 8, 9 and isosceles 10, 11, 12, 13 triangles. At the same time, on the two sides of the largest equilateral triangle 7, two identical isosceles triangles 11 and 12 are placed with their bases (double lines in FIG. 5). The bases of the triangles 11 and 12 are larger than the sides by the same amount, for example (Δ). Equilateral triangles 6 and 8 are placed to the lateral side of triangles 11 and 12, the sides of which are smaller than an equilateral triangle 7, respectively, also by (Δ). To the sides of triangles 6 and 8, isosceles triangles 10 and 13 are placed with their bases. The bases (shown in Fig. 5 with triple lines) of isosceles triangles 10 and 13 are also larger than their lateral sides by a value (Δ). Equilateral triangle 9, the sides of which are smaller than triangles 6 and 8 by an amount of (Δ) and accordingly less than triangle 7 by an amount of (2Δ), respectively, is placed to triangle 13. After bending the strip M along the lines A, B, C, D, D, E, Zh to one side, the ends of the strip M are connected along the line (shown in Fig. 4 with a triple line), for example, by welding to form section 5 (Fig. 4) . Sections 5 are connected to each other by the free sides of the triangles 6, 7, 8, 9, 10, 11, 12, 13, for example, by welding (Fig.6) with the formation of the housing 4 (Fig.1, Fig.2, Fig.3) . Broken helix lines are formed on the outer and inner surfaces of the housing 4, for example, as shown in FIG. 2 by a thickened line: a closed broken helix 14-15-16-17-18-19-20-21-22-23-24-25 -26-27-28-29-30-31-32-33-34-35-36-37-38-39-40-41-42-43-44-45-46-47-48-49-50 -51-52-53-14 and closed broken helix 54-55-56-57-58-59-60 = 61-62-63-64-65-66-67-68-69-70-71-72 -73-74-75-76-77-78-79-80-81-82-83-84-85-86-87-88-89-90-91-92-93-54 (invisible in FIG. 2 sections of helical lines are shown by two parallel lines: solid and dashed lines, and the invisible points of a broken helical line are taken in parentheses).

As a result, helical surfaces of various triangles in shape, area and size are formed on the inner and outer surfaces of the casing 4 between broken helical lines, and the casing 4 itself has a cross-section that varies in shape, dimensions of the sides and the cross-sectional area (Fig. 7, Fig. .8, Fig. 9).

Vibratory mill operates as follows.

The disturbing force of the vibrator 3 through the walls of the housing 4 is transmitted to the grinding bodies and particles of the crushed material (loading mass) located inside the housing 4. The grinding bodies and particles of the crushed material make a complex movement, in which the material is crushed mainly by abrasion. Grinding bodies not only hit each other, but also, together with particles of the material, under the influence of vibration, rotate in a plane perpendicular to the passage section of the housing 4. Since the dimensions of the cross section along the length of the housing 4 vary, the shape, location changes, the disturbance of mass movement is aggravated loading, i.e. there is an increase in grinding intensity. The presence of flat multidirectional triangles in each section of the housing 4 along its perimeter changes the direction of movement of individual portions of the load masses, complicates the trajectory of their movement in the plane perpendicular to the through section of the housing 4, which intensifies the process of mixing, collisions of grinding media and particles of the crushed material and accelerates the grinding process material. The presence of helical surfaces and broken helical lines around the perimeter of the housing 4 contributes not only to complicate the paths of their movement, but also to move along the passage section of the housing 4. When the mass of the load moves along the passage section of the housing 4 due to the change in the passage section in shape and size, zones are formed alternately compression and rarefaction in each section of the housing 4 throughout its volume, which also intensifies the grinding process and expands technological capabilities.

Claims (2)

1. Vibration mill containing an elastically mounted on the base of the housing with a vibrator, characterized in that the housing is made of sections, each of which is mounted from a strip bent to one side in straight lines placed at an angle to the edges of the strip, with an alternating formation along the length stripes of equal-sized equilateral and isosceles triangles of different sizes, while on the two sides of the largest equilateral triangle two identical isosceles triangles are located at their bases, on the sides of which two identical equilateral triangles are located with two identical isosceles triangles located to their bases, on one of which there is an equilateral triangle, the sides of smaller equilateral triangles differ from the sides of large equilateral triangles by the same linear value, and the sections are connected to each other the free sides of said triangles. 2. The vibration mill according to claim 1, characterized in that broken helical lines and helical surfaces are formed on the outer and inner surfaces of the housing.

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