RU2610486C1 - Continuously working concrete mixer - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: housing is fixed on a platform resiliently mounted on a frame. The housing is fixed on the platform provided with a vibrator, mounted horizontally under the platform. The housing is helical and made of a hollow tunnel with multipass screw surface along the perimeter rolled along a spiral axle 0₁-0₁ around the central axis 0₂-0₂ of the spiral housing provided with helical grooves inside at the angle to its spiral axis in the form of waveform pockets with centers of curvature located alternately inside and outside of cross-section of the hollow tunnel, and is assembled of sections of rings with the same shape and size rolled from similar diamond shape bands, which accommodates trapezoids, the sides of which are located on the sides of the diamond-shaped band and upper and lower bases of the trapezoids are arranged at sharp angle to the symmetry axis of the diamond-shaped band 0₃-0₃ and they are fold lines which are located at the distance from each other equal to the length of wave-shaped pockets along the inner surface of the hollow spiral tunnel. The sections in the form of rings are interconnected by trapezia sides.

EFFECT: expansion of process capabilities, increase of productivity and product quality in the continuously working mixer.

7 dwg

Description

The invention relates to devices for the preparation of mortars and concrete mixtures.

Known concrete mixer (AS No. 11999622, class B28C 5/14, 1982), comprising a housing with loading and unloading openings and with a working mixing body, longitudinally located in it and equipped with a vibratory tray under the unloading hole.

A disadvantage of the known device is the insufficient intensity of the interaction of the components of the solutions and concrete mixtures, limited technological capabilities.

Closest to the proposed invention is a vibratory concrete mixer (RF patent No. 2398678, class B28C 5/20, 2010), containing placed on the frame by means of a platform with pneumatic cylinders inserted in the device and equipped with a drive housing made of sections mounted around the perimeter with education along the perimeter of zigzag lines in one direction and has loading and unloading devices.

A disadvantage of the known device is the insufficient intensity of the interaction of the components of the mortars or concrete mixtures, large dimensions in length, limited technological capabilities and low quality products.

The technical result is the expansion of technological capabilities, increasing productivity and product quality

The technical result is achieved by the fact that in a continuous mixer containing a section housing fixed on the platform, mounted elastically on the bed, loading and unloading devices, the housing is rigidly mounted on a platform equipped with a vibrator mounted horizontally below the platform and made spiral from a hollow tunnel multithread screw surface perimeter folded along the spiral axis 0 ₁ -0 ₁ around a central linear axis 0 ₂ -0 ₂ volute casing provided with a helical and grooves inside at an angle to its spiral axis in the form of pockets of a wave-like shape with centers of curvature alternately inside and outside the cross section of the hollow tunnel, and assembled from sections in the form of rings of the same shape and size, rolled up from the same diamond-shaped stripes, on which has a trapezium, the sides of which are located on the sides of the rhomboid strip, and the upper and lower bases of the trapezoids are arranged at an acute angle to the axis of symmetry of diamond strip ₃ -0 0 and ₃ are lines cr ba located at distances from each other equal to the length of the wave-shaped pockets along the inner surface of the hollow tunnel spiral shape, wherein the section in the form of rings interconnected sides of trapezoids.

According to the patent literature not found a technical solution similar to the claimed, which allows us to judge the inventive step of the proposed concrete mixer continuous operation.

The novelty is due to the fact that the casing is made spiral with a multiple helical surface, which increases the intensity of interaction of the components of concrete mixtures and mixing water and expands technological capabilities.

The novelty is that the helical grooves of the spiral case are made in the form of pockets of a wave-like shape, which also increases productivity.

The novelty is that the installation of a vibrator under the base with the casing provides the oscillation path of the casing together with the concrete mix components in the form of a vertical ellipse, which provides an increase in the specific gravity of the total kinetic energy (E _n ) and increases the intensity of interaction of the concrete mix components and mixing water, expands technological capabilities.

The novelty is that the spiral case with a multi-start screw surface around the perimeter is equipped with screw grooves inside and outside at an angle to the spiral axis of symmetry 0 ₁ -0 _{1 of the} hollow tunnel of a spiral shape with a central rectilinear axis 0 ₂ -0 ₂ , which increases the intensity of interaction of the components concrete mixes and mixing water, expanding technological capabilities.

The novelty lies in the fact that the spiral grooves of the spiral casing are made in the form of pockets of a wave-like shape located inside and outside the cross section of the hollow tunnel, which increases the intensity of interaction of the components of concrete mixtures and mixing water, expands technological capabilities.

The novelty is seen in the fact that the spiral case is assembled from a section in the form of rings of the same shape and size, rolled up from the same diamond-shaped stripes, on which trapeziums are placed, the sides of which are located on the sides of the diamond-shaped strip, and the upper and lower bases of the trapezoid are located under acute angle to the axis of symmetry of the strip 0 ₃ -0 ₃ and are the bend lines located at distances from each other, equal to the length of the sides of the pockets, while the sections are connected to each other by the lateral sides of the trapezoid, which increases the intensity of interaction of components of concrete mixtures and expands technological capabilities.

The novelty of the proposal also lies in the fact that along the entire perimeter of the spiral casing, the passage section varies not only in shape, but also in area, which provides alternate compression and expansion of flows of components of concrete mixtures in each section of the spiral casing, increases the intensity of interaction of components of concrete mixtures and expands technological capabilities.

The novelty of the invention lies in the fact that the trapezoid of the diamond-shaped strips from which the sections are mounted are not only inclined to each other, but also to the axis of symmetry of the spiral casing, therefore, the degree of compression of the particles of the components of concrete mixtures increases, and the process of their interaction is intensified.

The novelty of the proposal also lies in the fact that along the entire perimeter of the casing, the passage section varies not only in shape, but also in area, which provides alternate compression and expansion of the solution and mixing water components in each casing section, which means increased productivity, efficiency, reduction dimensions and expansion of technological capabilities.

The invention is illustrated by drawings, where in FIG. 1 shows a continuous concrete mixer, general view; in FIG. 2 is a section AA in FIG. one; in FIG. 3 - a visual image of a spiral case with pockets of a wave-like shape; in FIG. 4 - a visual representation of the relative position of the spiral 0 ₁ -0 ₁ , along which a hollow tunnel with a multiple helical surface is rolled around a central straight axis 0 ₂ -0 ₂ ; in FIG. 5 - one of the diamond-shaped strips on which trapezoids are placed, the upper and lower bases of which are located at an acute angle to the axis of symmetry of the strip 0 ₃ -0 ₃ in the form of fold lines; in FIG. 6 - a strip of a rhomboid shape, bent on the fold lines to the upper and lower bases of the trapezoid; in FIG. 7 - one of the diamond-shaped stripes, rolled into a ring.

The continuous mixer (Fig. 1, Fig. 2) contains a hollow spiral casing 1, rigidly fixed to the platform 2 elastically with four rubber-cord cylinders 3 mounted on the base 4. On the platform 2 is rigidly fixed device 5 for loading and from below to the platform 2 rigidly attached vibrator 6 with a horizontal axis of rotation. The continuous mixer is equipped with a discharge device 7.

The vibrator 6 is mounted horizontally under the platform 2 and therefore provides the movement of particles of concrete or mortar components and mixing water inside the housing 1 under the influence of the vibrator 6 along elliptical trajectories.

The housing 1 (Fig. 1-3) is made spiral. In FIG. 4 shows a visual representation of the relative position of the axis of the spiral - the center of the axis of symmetry 0 ₁ -0 _{1 of the} hollow tunnel of the spiral casing 1 (in Fig. 4, the spiral casing 1 is shown in cross sections 9 of the hollow tunnel with a multiple helical surface) and the central straight axis 0 ₂ -0 ₂ spiral housing 1.

Thus, around the perimeter, the spiral casing 1 is made in the form of a spiral-shaped tunnel with a multi-helical surface along the perimeter and is provided with screw grooves inside and outside, located at an angle α to the axis of symmetry of the spiral 0 ₁ -0 _{1 of the} center of the axis of symmetry (Fig. 3) of the tunnel spiral, coiled 0 ₁ -0 ₁ around the central axis 0 ₂ -0 _{2 of the} spiral housing 1.

The helical grooves of the spiral casing 1 are made in the form of pockets 10, 11, 12, 13, 14, 15 on the inner surface and pockets on the outer surface 16, 17, 18, 19, 20, 21 of the spiral shape tunnel (Fig. 4) in the form of pockets wave-shaped with centers of curvature located inside and outside the cross section of the hollow tunnel, assembled from sections in the form of rings 22 of the same shape and size (Fig. 7), connected to each other by the lateral sides 23 and 24.

The result is a hollow tunnel of the spiral casing 1 (Fig. 1-3) with the axis of the spiral - the center of the axis of symmetry 0 ₁ -0 _{1 of the} spiral casing 1, twisted around the central rectilinear axis 0 ₂ -0 _{2 of the} spiral casing 1 in diameter D _cf with the formation spiral housing 1 with an outer diameter of D _max and an inner diameter of D _min (Fig. 4).

In this case, the hollow spiral casing 1 with a multiple helical surface is provided with helical grooves in the form of pockets of a wave-like shape 10, 11, 12, 13, 14, 15 and pockets of a wave-like shape 16, 17, 18, 19, 20, 21 on the outer surface of the spiral case 1 (Fig. 4).

Thus, a hollow perforated tunnel with its own spiral axis of symmetry 0 ₁ -0 _{1 is} folded along this spiral 0 ₁ -0 ₁ around the central rectilinear axis 0 ₂ -0 ₂ and forms a spiral case 1 (Fig. 4).

Section 22 is made in the form of a ring (Fig. 7) and is mounted from a diamond-shaped strip 25 (Fig. 5).

Trapeziums 26, 27, 28, 29, 30, 31 are placed on the diamond-shaped strip 25, the sides of which are located on the sides of the diamond-shaped strip 25, and the upper and lower bases of these trapezoids (Fig. 5) are located at an acute angle β to the axis of symmetry of the diamond-shaped stripes 0 ₃ -0 ₃ and are the fold lines (Fig. 5, Fig. 6) located at distances from each other equal to the length of the scan of the perimeter of the curved pockets (Fig. 7), spiral casing 1, made in the form of a hollow tunnel.

In FIG. 5 shows the trapezoid:

ABVG - the first trapeze 26;

VDEG - the second trapezoid 27;

JZE - third trapezoid 28.

In this case, AB is the smallest of all the upper bases of the trapezoid located on the diamond-shaped strip 25 below the bend line of the ZhZ and the above three trapeziums (first 26, second 27, third 28).

In FIG. 5 also shows the trapezoid:

ZhNKZ - the fourth trapezoid 29;

NLMK - the fifth trapezoid 30;

LNPM - sixth trapezoid 31.

In this case, NP is the smallest base of all the upper bases of the trapezoid located on the diamond-shaped strip 25 above the bend line of the ZhZ, which for all trapezoids, in turn, is the largest of all the lower bases from the fourth trapezium to the sixth trapezoid.

Thus, the JZ fold line is not only the lower base of the JZE trapezoid, but also the longest base of the JZZE trapezoid and the longest of all the lower bend lines of the diamond-shaped strip 25 and ring 22 (Fig. 7).

Moreover, the fold lines AB and NP are the shortest of all the fold lines of the diamond-shaped strip 25 and rings 22 and AB = NP.

The ratio of the length of the bend line of the ZhZ and AB (NP) determines the value of the step S _{1 of the} spiral 0 ₁ -0 ₁ , and therefore the step of winding the hollow tunnel around the straight axis 0 ₂ -0 _{2 of the} spiral casing 1.

For example, in FIG. 5 fold lines L ₆ <L ₅ <L ₄ <L ₃ and L ₀ <L ₁ <L ₂ <L ₃ .

The diamond-shaped strip 25 is bent along the straight fold lines, which are the base of all six trapezoids and parallel to each other (Fig. 5).

Then, the strip 25 is bent along the fold lines in a wave-like fashion (FIG. 6) and then folded into a ring 22 (FIG. 7) with wave-shaped pockets. A section in the form of identical rings 22 is then connected to each other sequentially by the lateral sides 23 and 24 so that all fold lines are a continuation of the fold lines of the same name of the previous ring.

Thus, the spiral case 1 (Fig. 1-3) is made around the perimeter in the form of a multiple helical spiral surface around the perimeter of the spiral case 1 with helical grooves inside and outside the spiral case 1 in the form of pockets of a wave-like shape 10, 11, 12, 13, 14 , 15 on the inner surface and helical grooves on the outer surface 16, 17, 18, 19, 20, 21 at an angle α to the spiral axis of the hollow tunnel of the spiral shape of the spiral housing 1.

Concrete mixer continuous operates as follows.

The disturbing force of the vibrator 6 through the walls of the platform 2 and the housing 1 is transmitted to the particles of the components of concrete or mortar and water inside the housing 1 and entering the housing 1 by a continuous stream through the loading device 5. The particles of the components of concrete or mortar and water rotate along vertical elliptical trajectories by which the concrete mixing process takes place. In this case, the particles of the components of concrete or mortar and water not only intensively interact with each other, but also under the influence of vibration rotate in a plane perpendicular to the bore of the housing 1. Since the length of the housing 1 is the cross-sectional dimensions, shape and location, then aggravated disturbance of the movement of particles of the components of concrete or mortar and water, which in this case, interacting with the walls of the housing 1, are moved from loading to unloading. The presence in the housing 1 of the screw surfaces around the perimeter of the housing 1 contributes not only to the complication of the trajectories of the particles of concrete or mortar and water, but also to the movement along the passage section of the housing 1 towards the discharge side.

When particles of the components of concrete or mortar and water move along the bore of the casing 1 due to changes in the bore in shape and size, compression and discharge zones are alternately formed in each section of the casing 1 throughout its volume, which also intensifies the process of preparing concrete or mortar and expands technological capabilities. Ready mortar or concrete through the discharge window 32, is discharged using slice 8 into the tank 7.

Technical appraisal and economic advantages of a continuous concrete mixer are obtained due to the spiral housing with screw surfaces, in the form of wavy pockets, which intensifies the interaction of particles of concrete or mortar components and water, expands technological capabilities, improves productivity and improves product quality,

Technical and economic advantages also arise due to the installation of a vibrator horizontally below the platform with a filter and a change in the shape of the motion path in the form of a vertical ellipse, which ensures an increase in the specific gravity of the total kinetic energy (E _p ) and increases productivity.

Claims (1)

A continuous mixer comprising a housing of sections mounted on a platform mounted elastically on the bed, loading and unloading devices, characterized in that the housing is mounted on a platform equipped with a vibrator mounted horizontally below the platform, and made spiral from a hollow tunnel with a multiple helical surface along the perimeter, coiled along the spiral axis 0 ₁ -0 ₁ around the central rectilinear axis 0 ₂ -0 _{2 of the} spiral casing, equipped with screw grooves inside at an angle to its spiral axis in the form of pockets of a wavy shape with centers of curvature alternately inside and outside the cross section of the hollow tunnel, and assembled from sections in the form of rings of the same shape and size, rolled up from the same diamond-shaped stripes on which trapeziums are placed, the sides of which located on the sides of the rhomboid strip, and upper and lower bases of the trapezoids are arranged at an acute angle to the axis of symmetry of diamond stripes 0 ₃ -0 ₃ and fold lines are located at a distance x from each other equal to the length of waveform pockets along the inner surface of the hollow tunnel spiral shape, wherein the section in the form of rings interconnected sides of trapezoids.

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