RU169551U1 - CONTINUOUS MIXING AND ACTIVATION DEVICE - Google Patents

Abstract

The inventive utility model relates to mixing and activation devices and is intended for the preparation and purification of mixtures, bulk materials and can be used in the construction, chemical, food and other industries.

The technical result of the proposed utility model is to simplify the design, the possibility of phased introduction of ingredients, the ability to control the processing time at each stage of the preparation of the mixture, reduce energy consumption when mixing and activation per unit of the finished product.

The technical result is achieved in that in a continuous mixing and activation device comprising a housing, a fixed or rotating axis, a cylindrical or conical working capacity mounted on bearings in the housing or on the axis, a working capacity drive and at least one bracket with at least with one blade mounted on the axis, while on one side of the working capacity there is a loading device for loading material, and on the other hand, a device for unloading material, in contrast to the known work it is fixed inside the container at least one disk with a central through hole, dividing the working volume of the container to the chamber, wherein the disc is mounted so that an annular gap is formed between its rim and the inner surface of the working capacity. Disks can be fixed on supports fixedly mounted on the inner surface of the working tank. Disks can be made in the form of a set of rings. The cylindrical working capacity is made by the national team in the form of cylindrical or conical sections, between which disks or supports with disks mounted on them are installed. A smooth or ribbed protrusion is made in the central part of the disk with the hole. The disk has a radial rib. Brackets with blades are mounted on the axis with the possibility of adjusting the position along the axis of the working tank. On the axis there are bushings for adjusting the axial position of the arms with blades. The support is made in the form of a washer with grooves and protrusions or a ring with a rim connected by spokes. Tamping pads located behind the blades in the direction of rotation of the working container inside or above the annular gap are fixed on the brackets or vanes. Ramming pads are installed with the ability to control the depth of immersion in the annular gap. The thickness of the ramming blocks is less than the width of the annular gap. The ramming blocks in longitudinal section are wedge-shaped or have a smooth convex curve. The immersion depth of the ramming block in the annular gap is equal to or less than the thickness of the disk, and the lifting height above the disk is not more than the gap between the disk and the side edge of the blade. Inside the loading part of the working capacity, a support-impeller is fixed, made in the form of a central ring and a rim connected by radial spokes. Radial spokes are made in the form of blades, the angle of inclination and / or the shape of which ensures the advancement of the processed material inside the working tank. In the axis there are longitudinal channels connected by radial holes to at least one chamber. The axis is connected to the rotation drive via a self-braking gear and / or connected to the brake.

Description

The inventive utility model relates to mixing and activation devices and is intended for the preparation and purification of mixtures, bulk materials and can be used in the construction, chemical, food and other industries.

An analogue of the claimed utility model is a device for mixing and activation, comprising a housing, a cylindrical working capacity, mounted on the bearings of the housing, mounted on the brackets inside the working capacity of the blades having a front surface, while a loading device for loading material is installed on one side of the working capacity, and on the other hand, a device for unloading material, while the arms with blades are evenly mounted on the shaft with the possibility of rotation, the blades are equipped with teeth, lengths which is equal to or greater than the thickness of the layer of the processed material, while the lateral surfaces of the teeth in the cross section are inclined to the axis of rotation of the inner surface of the working capacity (Patent No. 149626, B01F 1/18, item 10.01.2015, bull. No. 1) .

The disadvantages of the analogue are the impossibility of preparing mixtures requiring the sequential introduction of ingredients, as well as low productivity in the preparation of a mixture of powder materials with a low speed of soaring.

The prototype of the claimed utility model is a device for continuous mixing and grinding mixtures of bulk materials.

The device comprises a rotating cylindrical working capacity mounted on bearings, a rotor with blades mounted on it using brackets made in the form of disks with through holes. Between the rim of the disk and the inner surface of the working capacity there is a gap the size of which is smaller than the smallest size of the grinding media in contact with the ends of the disk. The smallest size of the grooves and / or holes in the blades and holes in the disks is smaller than the smallest size of the grinding bodies in contact with the ends of the disk. The blades are equipped with shaped protrusions, and grooves are made on the disks, the shape of which corresponds to the shape of the shaped protrusions. The blades are mounted on the disks with the possibility of regulating their position relative to the disks (Patent for the invention No. 2576465, B22C 5/04, dp March 10, 2016, bull. No. 7).

The disadvantage of the prototype is the impossibility of preparing mixtures requiring the sequential introduction of ingredients, the difficulty of regulating the processing time or mixing due to the need to change the angle of inclination of the side surfaces of the teeth of the blades.

The technical result of the proposed utility model is to simplify the design, the possibility of phased introduction of ingredients, the ability to control the processing time at each stage of the preparation of the mixture, reduce energy consumption when mixing and activation per unit of the finished product.

The technical result is achieved in that in a continuous mixing and activation device comprising a housing, a fixed or rotating axis, a cylindrical or conical working capacity mounted on bearings in the housing or on the axis, a working capacity drive and at least one bracket with at least one with a blade mounted on the axis, while on one side of the working tank a loading device for loading material is installed, and on the other hand, a device for unloading material, in contrast to the known on the working at least one disk with a central through hole is fixed to the container inside it, dividing the volume of the working capacity into cameras, while the disk is mounted in such a way that an annular gap is formed between its rim and the inner surface of the working capacity. Disks can be fixed on supports fixedly mounted on the inner surface of the working tank. Disks can be made in the form of a set of rings. The cylindrical working capacity is made by the national team in the form of cylindrical or conical sections, between which disks or supports with disks mounted on them are installed. A smooth or ribbed protrusion is made in the central part of the disk with the hole. The disk has a radial rib. Brackets with blades are mounted on the axis with the ability to adjust the position along the axis of the working tank. On the axis there are bushings for adjusting the axial position of the arms with blades. The support is made in the form of a washer with grooves and protrusions or a ring with a rim connected by spokes. Tamping pads located behind the blades in the direction of rotation of the working container inside or above the annular gap are fixed on the brackets or vanes. Ramming pads are installed with the ability to control the depth of immersion in the annular gap. The thickness of the ramming blocks is less than the width of the annular gap. The ramming blocks in longitudinal section are wedge-shaped or have a smooth convex curve. The immersion depth of the ramming block in the annular gap is equal to or less than the thickness of the disk, and the lifting height above the disk is not more than the gap between the disk and the side edge of the blade. Inside the loading part of the working capacity, a support-impeller is fixed, made in the form of a central ring and a rim connected by radial spokes. Radial spokes are made in the form of blades, the angle of inclination and / or the shape of which ensures the advancement of the processed material inside the working tank. In the axis there are longitudinal channels connected by radial holes to at least one chamber. The axis is connected to the rotation drive via a self-braking gear and / or connected to the brake.

The device is illustrated by drawings.

In FIG. 1 shows a longitudinal section through a continuous mixing and activation device;

In FIG. 2 is a view A in FIG. 1 (option with a solid disk);

In FIG. 3 is a view A in FIG. 1 (a variant of a disk from a set of rings);

In FIG. 4 is a view A in FIG. 1 (version of a disk with radial finning);

In FIG. 5 is a section BB in FIG. one;

In FIG. 6 is a section BB in FIG. one;

In FIG. 7 is a section BB in FIG. one;

In FIG. 8 is a view D in FIG. one;

In FIG. 9 - element D in FIG. one;

In FIG. 10 - element D in FIG. 1 scheme of the ramming block;

In FIG. 11 is a cross-section EE in FIG. 9;

In FIG. 12 is a view G in FIG. 10;

In FIG. 13 is a view 3 of FIG. 8;

In FIG. 14 is a diagram of a continuous mixing and activation device.

The continuous mixing and activation device (Fig. 1, Fig. 14) contains a cylindrical or conical working container 1 with a vertical axis of rotation, equipped with a loading device 2 and mounted on bearings 3 mounted on the housing 4. The working container 1 can be made integral in the form cylindrical or conical sections connected to each other by means of a threaded connection 5. At least one disk 6 is fixedly mounted inside the working container 1 (Fig. 2). The disk 6 can be mounted on the supports 7 (Fig. 2, Fig. 3), mounted on the inner surface of the working tank 1 or fixed between the sections of the composite working tank 1. Disks 6 can be made in the form of a set of rings 8 (Fig. 3), independently mounted on the support 7. The disks 6 having a central through hole 9, a smooth or ribbed protrusion 10 in the center of the disk 6 and a radial fin 11 (Fig. 4), divide the volume of the working tank 1 into chambers 12 (in Fig. 1, Fig. 14 shows an example of a device with three cameras I, II, III), while the disks 6 are mounted in such a way that between their rim and the inner surface of the working tank 1 is formed an annular gap 13 of size Δ (Fig. 2 - Fig. 12). Inside the upper loading part of the working tank 1 is fixed the upper support-impeller 14, made, for example, in the form of a central ring 15 with a rim interconnected by radial spokes 16, while the radial spokes 16 (Fig. 1, Fig. 8) can be made in the form of blades, the angle of inclination and / or shape of which ensures the advancement of the material inside the working tank 1 (Fig. 13). The support 7 can be made in the form of a washer with grooves and protrusions (Fig. 6) or a ring with a rim connected by spokes (Fig. 5). In the lower part of the working tank 1 there is a stationary device for unloading 17.

Inside the working vessel 1, the axis 18 is mounted for rotation with the help of bearing assemblies 19 with seals 20. At least one bracket 22 with at least one blade 23 fixed to it is mounted with, for example, a spline or key connection 21 on the axis 18 at least one bracket 24 with at least one scraper 25 fixed on it (Fig. 2, Fig. 3). With blades 23 on the brackets 22 and scrapers 25 on the brackets 24 (Fig. 7), each chamber 12 of the working container 1 is provided, starting from the upper support 14 and ending with the disk 6 installed on the support 7, which is extreme along the axis of rotation, mounted on the support 7 (Fig. 1). The surface of the scrapers 25 interacting with the processed material 26 (Fig. 14) may have a different shape, for example, a plane or a helical surface, allowing movement of the processed material 26 inside the working container 1 in the direction of the blades 23 and disks 6. To adjust the position of the brackets 22 and brackets 24 in the axial direction on the axis 18 there are bushings 27 (Fig. 1., Fig. 6., Fig. 7) fixed by a nut 28. The front surface of the blades 23, interacting with the processed material 26, has the form of a plane or concave surface rhnosti providing mixing and activation of the processed material 26 (FIG. 14).

On the brackets 22 or blades 23 using brackets 29 (Fig. 9, Fig. 10), ramming blocks 30 are mounted with the possibility of adjusting the position along the axis of rotation using threaded connections 31. The lateral surfaces 32 of ramming blocks 30 are made in a circle, where the radius R1 is less the inner radius R2 of the working capacity 1, and the radius R3 is greater than the radius Rd of the rim of the disk 6 (Fig. 11). The ramming blocks 30 in the longitudinal section have the shape of a wedge or a smooth convex curve, and the immersion depth t of the ramming block 30 in the annular gap 13 is equal to or less than the thickness h of the disk 6 (Fig. 9), and the lifting height above the disk 6 is not more than the gap between the disk 6 and the lateral edge 33 of the blade 23 (Fig. 10). The ramming pads 30 are arranged around the circumference behind the point of intersection of the projection of the front surface of the blade 23 with the rim of the disk 6 of radius Rd. The location of the tamper pads 30 behind the blades 23 in the direction of rotation of the working container allows to reduce the load and wear of the tamper pads 30. The tamper pads 30 can be located both inside the annular gap 13 and above the plane of the disk 6 above the annular gap 13. The height H of the tamper pad 30 should be greater than or equal to the sum of the thickness of the disk h and the gap between the end of the lateral edge 33 of the blade 23 and the disk 6 (Fig. 9, Fig. 10).

At least one longitudinal channel 34 is made in axis 19, connected by radial holes 35 to at least one chamber 12 of working capacity 1. Channels 34 are designed to supply powdered or liquid ingredients to chambers 12 of working capacity 1. Axis 18 through, for example, a belt the transmission 36 is connected to the rotation drive 37 through a self-braking transmission and / or connected to the brake 38. A pulley 39 of the belt drive of the rotation drive 40 mounted on the housing 4 is fixed to the working container 1.

A continuous mixing and activation device operates as follows.

Depending on the technological requirements, the desired performance and properties of the processed material 26, the immersion depth t of the ramming blocks 30, mounted on the brackets 29 relative to the disk 6, is adjusted by means of a threaded connection 31, while the ramming blocks can be lifted above the disk 6. The working rotates capacity 1 due to the drive 40 and rotate the axis 18 by the drive 37. In the loading device 2 serves the processed material 26, and through the longitudinal channels 34 into the working capacity 1 ayut ingredients (FIG. 14).

When the working container 1 rotates, the radial spokes 16 (Fig. 13) of the upper impeller support 14 break up lumps of the processed material 26 and push it into the working container 1, giving the processed material 26 a direction of movement towards the inner surface of the working container 1, as well as the disk 6. Under the action of centrifugal forces, the processed material 26 is pressed against the walls of the working tank 1 and due to friction forces it is accelerated to the angular velocity of rotation of the working tank 1.

With further rotation, together with the working capacity 1, a layer of the processed material 26 runs on a stationary or rotating scraper 25 and the blade 23. Moreover, the scraper 25 and the blade 23 can rotate both in the direction opposite to the direction of rotation of the working container 1, and in the direction coinciding with the direction of rotation of the working vessel 1. In the second case, the angular velocity of the scraper 25 and the blade 23 should be less than the angular velocity of rotation of the working vessel 1. As a result of the difference in the angular speeds of the scraper 25 and the blade 23 and the angular soon The working capacity 1 of the scraper 25 and the blade 23 separate the layer of the processed material 26 from the inner surface of the working capacity 1. If the direction of rotation of the working capacity 1 and the scrapers 25 and the blades 23 coincide, the axis rotation drive 37 may not be used, unidirectional rotation is performed by braking by the brake 38. In this case, the layer of the processed material 26 begins to move along the front surface of the scraper 25 and the blade 23. The inclined surface of the scraper 25 directs the processed material 26 towards the disk 6, partial mixing and / or activation of the processed material 26 is performed. On the disk 6, the processed material is thrown to the surface of the working container 1 due to friction forces. The ribbed protrusion 10 and the radial rib on the disk 6 of the working container 1 can reduce the acceleration time of the processed material 26 to the speed of rotation of the working containers 1. The blade 23 separates the processed material 26 from the surface of the working container 1 and discards it on the disk 6. As a result, the processed material 26 is intensively mixed and activated. If it is necessary to introduce additional ingredients into the processed material 26, it is fed through channels 34, radial holes 36 into the corresponding chamber 12 of the working container 1. Inside the chamber 12, the processed material 26 is intensively mixed with the ingredients entering the working container 1 using scrapers 25 and blades 23.

A part of the processed material 26 falls into an annular gap 13 of size Δ between the rim of the disk 6 of diameter Rd and the inner surface of the working container 1, from where the processed material 26 is pushed by the tamper block 30 into the next chamber 12 (for example, II of Fig. 14) of the working container 1, formed adjacent disks 6. The processed material 26 passing through the annular gap 13 is separated by a scraper 25 from the inner surface of the working container 1, and the process of mixing the processed material 26 with scrapers 25, the blades 23 is repeated. After passing the annular gap 13 of the latter from the loading device 2 of the disk 6, the processed material 26 enters the device for unloading 17. Regulation of the size Δ of the annular gap using removable rings of the disk 6 allows you to control the residence time of the processed material 26 in each chamber 12 of the working capacity 1. This allows comply with the necessary technological requirements when processing multicomponent compositions with the sequential introduction of ingredients. Adjusting the immersion depth t of the ramming blocks 30 and the width Δ of the annular gap 13 also allows you to adjust the processing time of the processed material 26 in each chamber 12 of the working tank 1, and accordingly, to regulate the performance of the continuous mixing and activation device. When mixing incoherent materials, for example dry sands or powder materials, moving them between the chambers 12 of the working tank 1 can be additionally carried out using a suction fan connected to the discharge device.

If it is necessary to clean the sands from surface contaminants and activate their surface, the resulting dusty fraction can be removed from the working tank 1 by a suction fan connected to a loading or unloading device. If it is necessary to obtain the maximum processing time of the processed material 26 in the chambers 12 of the working capacity 1, the tamper pads are removed from the annular gap 13, and the processed material 26 is pushed through the annular gap 13 by the end face of the side edge 33 of the blade 23 due to the edge effect. The use of continuous mixing and activation devices for the preparation of mixtures, as a rule, is carried out without the use of grinding media. In this case, the main factor providing intensive and uniform mixing is the multiple spatial displacement of the particles of the processed material 26 by the blades 23 and the scrapers 25 relative to each other and the saturation of the processed material 26 with the ingredients entering the working tank 1. The occurrence of intense shear deformations during the separation of the processed material 26 from the inner surface of the working tank 1 provides activation of the surface of the particles of the processed material 26 due to their partial abrasion and opening of juvenile surfaces.

Thus, the proposed device for continuous mixing and activation allows for the phased introduction of ingredients, to control the processing time at each stage of the preparation of the mixture and to reduce energy consumption during mixing and activation per unit of the finished product, due to a significant reduction in cutting forces in the interaction zone of the blade and disk.

Claims (18)

1. A device for continuous mixing and activation, comprising a housing, a fixed or rotating axis, a cylindrical or conical working capacity mounted on bearings in the housing or on the axis, a working capacity drive and at least one bracket with at least one blade mounted on the axis moreover, on one side of the working tank, a loading device for loading material is installed, and on the other hand, a device for unloading material, characterized in that at least e single disc with a central through hole, dividing the working volume of the container to the chamber, wherein the disc is mounted so that an annular gap is formed between its rim and the inner surface of the working capacity. 2. The device according to claim 1, characterized in that the disks can be mounted on supports fixedly mounted on the inner surface of the working container. 3. The device according to p. 1 or 2, characterized in that the disks can be made in the form of a set of rings. 4. The device according to claim 1, characterized in that the cylindrical working capacity is made by the national team in the form of cylindrical or conical sections, between which disks or supports are mounted with disks fixed to them. 5. The device according to claim 1, characterized in that in the central part of the disk with the hole a smooth or ribbed protrusion is made. 6. The device according to p. 1, characterized in that the disk has a radial rib. 7. The device according to p. 1, characterized in that the brackets with blades are mounted on the axis with the possibility of adjusting the position along the axis of the working tank. 8. The device according to claim 7, characterized in that on the axis there are bushings for adjusting the axial position of the arms with blades. 9. The device according to p. 2, characterized in that the support is made in the form of a washer with grooves and protrusions or a ring with a rim interconnected by knitting needles. 10. The device according to claim 1, characterized in that rammers are mounted on brackets or vanes located behind the vanes in the direction of rotation of the working container inside or above the annular gap. 11. The device according to p. 10, characterized in that the tamper pads are installed with the ability to control the depth of immersion in the annular gap. 12. The device according to p. 10, characterized in that the thickness of the ramming blocks is less than the width of the annular gap. 14. The device according to p. 10, characterized in that the ramming pads in longitudinal section are in the form of a wedge or a smooth convex curve. 15. The device according to p. 11, characterized in that the immersion depth of the ramming block in the annular gap is equal to or less than the thickness of the disk, and the lifting height above the disk is not more than the gap between the disk and the side edge of the blade. 16. The device according to p. 1, characterized in that inside the boot part of the working capacity is mounted a support-impeller made in the form of a central ring and a rim connected by radial spokes. 17. The device according to p. 16, characterized in that the radial spokes are made in the form of blades, the angle of inclination and / or shape of which ensures the promotion of the processed material inside the working capacity. 18. The device according to claim 1, characterized in that in the axis there are longitudinal channels connected by radial holes to at least one camera. 19. The device according to claim 1, characterized in that the axis is connected to the rotation drive through a self-braking gear and / or connected to the brake.

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