RU2614779C1 - Square mill - Google Patents

Abstract

FIELD: machine engineering.

SUBSTANCE: mill comprises a vibrator housing provided with a resiliently mounted on the base and formed with a hollow square shaped spiral curved surface on the inner perimeter of a polyhedral shape with pockets in the form of various geometric shapes with four or more sides. The chamber consists of rigidly alternately interconnected four hollow sections in the form of a hollow circular sector with four hollow rectilinear sections. The four sections are presented in the form of a hollow circular sector made from a ringed band with polyhedral surface which forms quadrangles of different size with two parallel sides being set parallel to each other and form subsections. The subsections are interconnected by free sides of the mentioned quadrangles in the form of a hollow circular sector which is provided with multithread screw surface, screw grooves inside the circular sector at an angle to its axis in the form of polygonal pockets with four or more side faces. The distance between the straight bend lines is equal to the length of every element of the polygon. The four hollow rectilinear sections are produced from at least one band bent along straight lines arranged at an angle to the band edges, forming parallelograms located on the band alternately into opposite sides. The strip is rolled into cylindrical coils, connected to each other along the longitudinal edges to form an outer surface for screw unidirectional polygonal lines.

EFFECT: mill improves grinding performance.

14 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 tube mill containing loading and unloading pins, a drive and a drum made of at least one strip (RF patent No. 2358808, MKI V02C 17/04, publ. 06/20/2009., Bull No. 17) with the formation on the inner surface of pockets polygonal and curved shape.

A disadvantage of the known device is limited technological capabilities, insufficient productivity and large dimensions in length.

Closest to the proposed invention is a vibration mill (RF patent No. 2350391, MKI B02C 17/02, publ., 03/27/2009. Bull. No. 9), containing a toroidally-shaped housing mounted on the base with a vibrator mounted vertically, while 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 of different sizes of equilateral and isosceles triangles and the formation of the outer and inner her surfaces of broken helical lines and helical surfaces.

A disadvantage of the known device is the limited technological capabilities due to the circular shape of the trajectory of the vibrations of the casing and insufficient grinding performance, manufacturing complexity, insufficient length of the path of movement of the crushed materials.

The technical result is the expansion of technological capabilities, increase productivity and path (length) of the movement of the crushed materials in the housing.

The technical result is achieved in that in a square mill containing an elastically mounted base equipped with a vibrator housing, the housing is hollow square in shape with a curved helical surface along the inner perimeter with pockets of a multifaceted shape, in the form of various geometric shapes, with four or more sides and mounted from four hollow sections rigidly connected alternately to each other, made in the form of a hollow circular sector with four hollow rectilinear sections four sections made in the form of a hollow circular sector made of a strip rolled into a ring with a multifaceted surface and the formation of different-sized quadrangles with two parallel sides parallel to each other with the formation of subsections, while the subsections are connected to each other free sides of said quadrangles in the form of a hollow circular sector made with a multiple helical surface provided with helical grooves inside the circular the vector at an angle to its axis in the form of pockets of a polygonal shape of various geometric shapes with four or more sides, the distance between straight fold lines being equal to the length of each polygon element, and four hollow rectilinear sections made of at least one strip bent along straight lines placed at an angle to the edges of the strip, with the formation of parallelograms located on the strip alternately in opposite directions, while the strip is folded into cylindrical coils connected to each other another along the longitudinal edges with the formation on the outer surface of unidirectional broken helical lines, and on the inner surface - broken helical pockets of a polygonal shape in the form of various geometric shapes with four or more sides, which along the perimeter can be different not only in shape but also in shape sizes, while the distances between the fold lines are equal to each other and equal to the sum of the lengths of the perimeters of the geometric figures of the pockets of the inner surfaces.

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

The novelty lies in the fact that the case is made hollow in the form of a square with a curved helical surface along the inner perimeter in the form of pockets of a multifaceted shape, which expands technological capabilities, with the same dimensions with the case made in the form of a torus, technological capabilities expand and the path increases (length) of the movement of the crushed materials in a square case, since the length along the perimeter of the torus (circle) of diameter D is L ₁ = πD, and the length along the perimeter of the square is L ₂ = 4D. (L ₂ > L ₁ )

The novelty is also due to the fact that the casing is mounted from four sections rigidly alternately rigidly connected to each other, made in the form of a circular sector with four rectilinear sections, which expands technological capabilities, since with the same dimensions the casing made in the form of a torus expands technological capabilities and increases the path (length) of the movement of the crushed materials in a square case.

The novelty is seen in the fact that the pockets of the case are made in the form of geometric shapes of a polygonal shape, at least from one strip, which expands the technological capabilities.

The novelty also lies in the fact that the pockets around the perimeter of the case can be different not only in shape, but also in size, which expands technological capabilities.

The novelty is also due to the fact that the distances between the fold lines of the pockets of the inner surfaces are equal to each other and equal to the sum of the lengths of the perimeters of the geometric figures of the pockets of the inner surfaces, which expands the technological capabilities.

The novelty is due to the fact that the case is made hollow, in the form of a square, with a curved helical surface along the inner perimeter in the form of pockets of a multifaceted shape in the form of various geometric shapes with four or more sides, which provides not only the intensification of the interaction of the crushed materials, increased productivity, but and expanding technological capabilities.

The novelty of the proposal lies in the fact that polygonal surfaces are formed on the inner surface of the body, which along the perimeter can be different not only in shape but also in size, which provides a change in the direction of movement of the crushed materials, as a result, productivity increases and technological capabilities expand.

The novelty is due to the fact that the sections from which the body is assembled are mounted around the perimeter from strips with quadrangles marked on them of different sizes and sizes, therefore, the intensity and productivity of grinding increases, and technological capabilities expand.

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 flows of crushed material in each section of the casing, which means increasing productivity and expanding technological capabilities.

The novelty of the invention lies in the fact that the quadrangles of the strips from which the sections are mounted are not only inclined to each other, but also to the axis of symmetry of the body, so the compression ratio of the streams of crushed materials increases, the grinding process is intensified.

The novelty also lies in the fact that the casing is made of sections and subsections, the walls of which are not only inclined to each other, but also to the direction of rotational motion of the crushed materials moving under the influence of vibration in planes perpendicular to the passage section of the casing, which complicates the trajectories of their movement and increases grinding performance and expands technological capabilities.

The invention is illustrated by drawings, where: in FIG. 1 shows a square mill, general view; in FIG. 2 - a case in the form of a square, top view; in FIG. 3 is a section AA in FIG. 2; in FIG. 4 - one of the four sections, made in the form of a hollow circular sector, top view; in FIG. 5 is a section BB in FIG. four; in FIG. 6 - strip with marked straight lines of bending and cutting lines of the edges of the quadrangles; in FIG. 7 - strip after trimming the edges of the quadrangles; in FIG. 8 - a strip after trimming the edges of the quadrangles, bent along the straight lines of the fold; FIG. 9 is a perspective view of a strip folded into a ring subsection; in FIG. 10 - one of four hollow rectilinear sections with pockets of a polygonal shape, general view; in FIG. 11 is a section bb in FIG. 10; in FIG. 12 is a strip with marked fold lines in the form of straight lines for pockets of the polygonal shape of the hollow rectilinear section in FIG. 10; in FIG. 13- strip bent in straight lines with the formation of pockets of a polygonal shape; FIG. 14 is a perspective view of a strip folded into a cylindrical coil.

The square mill (Fig. 1) consists of a housing 1 mounted on a platform 2 equipped with a vibrator 3. Platform 2 by means of springs 4 is mounted on the base 5.

The housing 1 is made in the form of a square (Fig. 2) with a polygonal screw surface along the inner perimeter (Fig. 3) in the form of pockets of a polygonal shape and is mounted from four sections 6, 7, 8, 9, rigidly alternately connected to each other, made in the form circular sector with four rectilinear sections 10, 11, 12, 13 (Fig. 2).

Sections 6, 7, 8, 9 (Fig. 4) with a polyhedral helical surface along their inner perimeter are made of subsections 14 (one of the subsections in Fig. 4 is marked by solid thickened lines), interconnected by known methods, for example, welding, gluing and etc., with the formation of helical lines on the outer and inner surfaces (in Fig. 4, one of the helical lines is shown by a thickened line 15 - 16 - 17 - 18 - 19 - 20 - 21 - 22 - 23) and polygonal helical surfaces in various geometric shapes with four or more sides, for example, a rectangle, a trapezoid, a rhombus, etc., in the form (Fig. 5) of pockets of the outer surface 24, 25, 26, 27, 28, 29 and pockets of the inner surface of a polygonal shape 30, 31, 32, 33, 34, 35.

Each of the subsections 14 is made in the form of a circular sector (Fig. 4, Fig. 5) and is mounted from a strip 36 (Fig. 6, Fig. 7), on which rectangles are marked, along the diagonals of which there are fold lines passing through points 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60 at distances from each other equal to the length of the side of the geometric figure, for example, as in FIG. 6, at a distance of L ₁ , L ₂ , L ₃ . The fold lines of the strip 36 are shown in FIG. 6 thickened line. On strip 36, trim lines 61 of the edges of strip 36 shown in FIG. 6 dash-dot line with two dots. After marking along the edge-cutting line 61, sections of the strip 36 (in FIG. 6 these sections of the strip 36 are shaded) are cut off and the strip 36 takes on the form shown in FIG. 7, in which the fold lines of the strip 36 are different in length L ₄ , L ₅ , L ₇ , L ₈ , L ₉ , L ₁₀ , L ₁₁ , L ₁₂ , L ₁₃ , L ₁₄ , L ₁₅ , L ₁₆ , L ₁₇ , L ₁₈ , L ₁₉ , L ₂₀ , L ₂₁ , L ₂₂ , L ₂₃ , L ₂₄ , L ₂₅ , L ₂₆ , L ₂₇ .

The strip 36 (Fig. 7) after trimming the edges of the rectangles along the trim lines 61 is bent (Fig. 8) along straight lines - the bend lines 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48 , 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, placed at an angle α to the edges of the strip 36 (Fig. 6) to form different-sized quadrangles with two parallel sides, t .e. along the diagonals passing through the points 37-60 of the rectangles (Fig. 6) parallel to each other, and then collapses into a ring 14 with a polyhedral surface, as shown in Fig. 9. The transverse edges 62 and 63 of the strip 36 (Fig. 6, Fig. 7) after folding into a ring 14 are connected by known methods, for example by welding, soldering, etc., with the formation of a subsection 14 in the form of a circular sector-ring 14 (Fig. . 9, Fig. 4).

Thus, sections 6, 7, 8, 9 (Fig. 4, Fig. 5) are made around the perimeter in the form of a multiple helical surface with helical lines varying in diameter of the section in increments of the perimeter of the section (one of the helical lines is shown in FIG. 4 with a thickened line 15 - 16 - 17 - 18 - 19 - 20 - 21 - 22 - 23, and screw grooves inside and outside the sections 6, 7, 8, 9 in the form of pockets of a polygonal shape, at an angle to the axis of the sections 6, 7, 8, 9.

Sections 6, 7, 8, 9 (Fig. 4, Fig. 5) with a screw surface along its inner and outer perimeter with the formation of pockets of a polygonal shape can be made in other ways.

Four hollow rectilinear sections 10, 11, 12, 13 (FIG. 10, FIG. 11) with polygonal pockets, for example section 10, are made of at least one strip 64 connected along the longitudinal edges 65 (shown in FIG. 10 by a dot-dash line line) by known methods, for example by welding, with the formation of helical lines on the outer and inner surfaces (in Fig. 10, one of the helical lines is shown by a thickened line 66 - 67 - 68 - 69 - 70 - 71 - 72 - 73 - 74 - 75 - 76 - 77) and screw surfaces (Fig. 11) of a rectangular shape in the form of pockets of the outer surface 78, 79, 80, 81, 82, 83 and Armand inner surface 84, 85, 86, 87, 88, 89.

Strip 64 (FIG. 12, FIG. 13) is bent along straight lines 90 at equal angles α to the longitudinal edges 65 of strip 64 placed at distances equal to the length of the polygon elements of the pockets, for example for pocket 81 at distances L ₁ , L ₂ , L ₃ .

The strip 64 after bending along straight lines (Fig. 12, Fig. 13) is folded into cylindrical coils (Fig. 14), connected to each other along the longitudinal edges 65 by known methods, for example by welding, into hollow straight sections 10, 11, 12, 13.

Hollow rectilinear sections, for example 10, 11, 12, 13, with pockets of a polygonal shape are rigidly connected alternately with hollow sections 6, 7, 8, 9 with pockets of a polygonal shape along the docking lines (at the docking points in Fig. 2 they are shown with dashed lines around perimeter of the square case) with the formation of a continuous hollow body 1 in the form of a square with pockets of a polygonal shape along its inner perimeter.

Square mill operates as follows.

The disturbing force of the vibrator through the walls of the housing 1 is transmitted to the particles of crushed materials inside the housing 1 and entering the housing 1 in a continuous stream through the loading device (not shown). Particles of crushed materials rotate along vertical elliptical trajectories, while the process of grinding materials occurs. The presence of curvilinear multidirectional elements, including pockets with a polygonal shape along the inner perimeter of the housing 1, changes the direction of flow of particles of the crushed materials, as a result of which they not only acquire directional movement from loading to unloading, but also compression zones are formed along the entire path length particles of crushed material inside the housing 1, the productivity of a square mill increases, technological capabilities expand. In this case, the particles of the crushed materials not only intensively interact with each other, but also under the influence of vibration rotate in a plane perpendicular to the through section of the casing 1. Since casing 1 has the cross-sectional dimensions, shape and location as the crushed materials move from loading to unloading change, then the disturbance of the movement of particles of crushed materials, which in this case interact with the pockets of the polygonal shape of the inner walls of the housing 1, is aggravated there is an increase in the intensity of the crushed materials. The presence of helical surfaces and helical lines around the perimeter of the housing 1 contributes not only to the complication of the trajectories of particles of the crushed materials, but also to their movement along the passage section of the housing 1 towards the discharge side and to the discharge device (not shown in the drawing).

When particles of the crushed materials move along the bore of the casing 1 due to a change in the bore in shape and size, compression and rarefaction zones are formed in each section of the casing 1 throughout its volume, which also intensifies the process of grinding materials and expands technological capabilities. The presence of helical surfaces and helical lines along the perimeter of the housing 1 ensures the movement of the flows of crushed materials not only in hollow rectilinear sections of the housing 1, but also in hollow sections made in the form of a circular sector, which contributes not only to complicate the trajectories of their movement, but also to move them along the cross section of the housing 1 from loading to unloading. When particles of the crushed materials move along the bore of the casing 1 due to a change in the bore in shape and size, compression and rarefaction zones are formed in each section of the casing 1 throughout its volume, which also intensifies the grinding process and expands the technological capabilities.

Technical and economic advantages arise due to the execution of the square mill body in the form of a square, the inner surface of which is equipped with unidirectional helical lines and helical surfaces in the form of pockets of a polygonal shape, and also due to the fact that particles of the crushed materials under the influence of vibration rotate in planes, perpendicular to the axis of symmetry of the hollow body and pockets of a polygonal shape around its perimeter, as well as due to the fact that when the particle flows are shredded proxy materials through body section due to changes in the flow cross section shape and size are formed alternately compression and rarefaction zones in each section of the housing over its entire volume, which intensifies the grinding process and broadens technological capacities.

Technical and economic advantages arise due to the installation of a vibrator horizontally under a platform with a square body, which provides an increase in the specific gravity of kinetic energy by 1.3-1.5 times and increases productivity.

Claims (1)

A square mill containing an elastic housing mounted on the base and equipped with a vibrator, characterized in that the housing is hollow square in shape with a curved helical surface along the inner perimeter with multi-faceted pockets in the form of various geometric shapes with four or more sides and mounted from rigidly connected alternately with each other four hollow sections made in the form of a hollow circular sector with four hollow rectilinear sections, and four The sections are made in the form of a hollow circular sector made of a strip rolled into a ring with a multifaceted surface and the formation of different-sized quadrangles with two parallel sides parallel to each other to form subsections, while the subsections are connected to each other by the free sides of the said quadrangles in the form a hollow circular sector made with a multiple helical surface provided with helical grooves inside the circular sector at an angle to its axis in in the form of pockets of a polygonal shape of various geometric shapes with four or more lateral sides, the distance between straight fold lines being equal to the length of each polygon element, and four hollow rectilinear sections made of at least one strip bent along straight lines placed at an angle to the edges of the strip with the formation of parallelograms located on the strip alternately in opposite directions, while the strip is folded into cylindrical coils connected to each other along the longitudinal edges m with the formation on the outer surface of unidirectional broken helical lines, and on the inner surface - broken helical pockets of a polygonal shape in the form of various geometric shapes with four or more sides, which around the perimeter can be different not only in shape but also in size, with this distance between the fold lines are equal to each other and equal to the sum of the lengths of the perimeters of the geometric shapes of the pockets of the inner surfaces.

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