RU2369549C2 - Bin vibration activator (versions) - Google Patents

Abstract

FIELD: packing industry.

SUBSTANCE: invention can be used in mining industry, construction enterprises, metallurgy industry. A bin vibration activator comprises a bin with a suspended profile funnel with cylindrical and conical parts connected by the surface, a supporting cross beam with vibrators on its end and a conical divider. The angle between the divider generatrix and its base amounts to (0.9-0.7)α, the angle between the lower conical funnel part and the horizontal line - (0.7-0.5)α, where α stands for the angle of the material surface friction. The cylindrical part of the funnel is connected to its conical part by a truncated cone surface. The lower part of the cylindrical funnel surface is limited by the line of intersection of the divider conical surface generatrix, and the upper part of the lower conical funnel part is limited by the normal line to the divider edge. According to the second version of the invention the lower part of the conical divider is of a truncated cone shape.

EFFECT: uniform efficiency of the material unloading regarding its physical and mechanical properties.

4 cl, 2 dwg

Description

The invention relates to bunker devices for unloading bulk materials, for example wet sand, mortar, sawdust, etc., and can be used in mining, construction enterprises, metallurgical industries.

A vibration activator is known from the prior art, including a profile funnel and a divider having a central spherical shape, rigidly fastened by a cross-shaped beam, the vibrators are fixed at the protruding ends of which, the funnel in the lower part ends with a pipe that is placed above the vehicle, while the funnel is suspended on special bunker traction (Patent US 3261508 from 07/19/1966).

The disadvantage of this solution is a significant compaction of loose materials in the end zone of the divider and the beginning of the funnel, since the geometric dimensions between the base of the divider and the inner walls of the funnel are made without taking into account the physicomechanical properties of the working product.

The closest technical solution, selected as a prototype for both versions of the device, is a hopper device containing a housing, a funnel mounted under it on the suspension, consisting of a cylindrical and conical parts with an outlet, interconnected by elements with a curved surface, a vibrator mounted on a funnel, and a conical divider located in it (Patent RU No. 1825343, 06/30/93, IPC B65G 88/66).

The operation of the specified hopper device is accompanied by uneven unloading of the working product from the device. This is due to a violation of the balance of the incoming product from the divider and its passage through the inner surfaces of the funnel, which does not ensure uniform discharge of the working product, since the ratio of the geometric parameters of the divider and the conical funnel is not optimized in the design, resulting in an uneven output of the working product. In addition, in practice it is rather difficult to produce this vibration activator in the part connecting the cylindrical part of the funnel with a spherical-conical surface.

1. The technical task of the invention is the creation of a bunker vibration activator that provides uniform discharge performance of the working material (exit speed) taking into account the physicomechanical properties of the working material, due to the optimal ratio of the angle of inclination of the generatrix of the divider, the lower conical part of the funnel.

To solve this problem, in a bunker vibration activator containing a hopper with a suspended profile funnel having a cylindrical and conical parts, interconnected by a surface, carrying a cross-shaped beam, at the ends of which vibrators are installed, and the divider, according to the invention, the angle between the divider generatrix and its base is (0.9-0.7) α, and the angle between the lower conical part of the funnel with the horizontal is (0.7-0.5) α, where α is the angle of friction of the working material over the surface of the structure. In addition, the cylindrical part of the funnel is connected to the base of the conical part of the funnel by a truncated cone, while the lower part of the cylindrical surface of the funnel is limited by the line of intersection of the generatrix of the conical surface of the divider, and the upper part of the lower conical part of the funnel is bounded by the normal to the edge of the divider.

The angle α is determined by the properties of the bulk material.

The choice of the angle between the generatrix of the divider and its base is equal to (0.9-0.7) α, and the angle between the lower conical part of the funnel with a horizontal equal to (0.7-0.5) α, where α is the angle of friction of the material on the inner surfaces its movement, due to the fact that a sequential decrease in the angle of inclination of the vibrating surfaces will provide support against the material itself along the path of movement from the divider and along the inner surface of the funnel. The working material will move without seals and gaps and thereby ensure the uniformity of its unloading, which is very important for subsequent precise technological processes.

The restriction of the cylindrical part of the funnel to the line of intersection of the generatrix of the conical surface of the divider, and the upper line of the lower conical part of the funnel to the normal to the edge of the divider, eliminates the narrowing of the cross-sectional areas of the product flow in this section of its movement and thereby contribute to the uniformity of product movement.

The execution of the connecting surface between the cylindrical part of the funnel and the base of the lower conical part of the funnel in the form of a truncated cone greatly simplifies the manufacture of the device, reducing labor costs.

Vibroactivator hopper shown in figure 1.

The hopper vibroactivator comprises a hopper housing 1, to which a profile funnel consisting of a cylindrical part 3 and conical parts 4 and 5 is attached to the suspensions 2. Moreover, the surface 4 is made in the form of a truncated cone and is limited to a point in the cylindrical part of the funnel in its upper part by the line of intersection of the generatrix the conical surface of the divider (in Fig. 1, the line "a"), and in the lower part the line of intersection of the normal, from the upper point of the lower conical part 5 to the edge of the divider (line "b"). The profile funnel is connected by a cross-shaped beam 6 with a conical divider 7. At the ends of the cross-shaped beam 6, vibrators 8 are installed. The conical part 5 of the profile funnel is equipped with a discharge pipe 9, which is placed above the transport device, for example, conveyor 10.

The vibrator activator bunker as follows.

An empty hopper and a vibration activator (with the activator turned off) are loaded with a working bulk product. In the stationary position of the vibration activator, the bulk product fills the inner space of the profile funnel, its cylindrical part 3 and the space formed by the truncated cones 4 and 5. In this case, the bulk product is formed from the edge of the divider 7 to the edge of the pipe 9 at an angle of repose. In this position, the bulk product can fill the space along the entire height of the hopper. The natural pressure of the product is absorbed by the divider 7, and the pipe 9 remains unloaded, while the layer of bulk product on the periphery of the pipe 9 does not experience pressure from the side of the high layer of this product in the hopper 1.

When you turn on the vibrators 8 and the transport device 10, located under the hopper, the bulk product becomes mobile and begins to move along the lower truncated cone 5 of the funnel to the center, filling the nozzle 9. The selected ratio of the geometric parameters of the divider 7 and surfaces 3, 4 and 5 profile funnels are optimal for uniform product flow when unloading from the hopper. For most rocks, the angle of friction over the steel surface is 32 °. For the divider, the angle of inclination of the outer wall is 27-24 °, and for the funnel, respectively, 24-18 °. These parameters provide the conditions for moving the work product with a slowdown from top to bottom, i.e. the overlying layers always form an overlying layer, forming a stable layer in height and speed in a single section along the path of the product in the funnel.

Currently, the proposed vibration activator has passed laboratory tests, and two of its options (industrial sizes), which are in pilot industrial operation, give positive results, incorporated by this invention.

2. The technical task of the invention is the creation of a bunker vibroactivator that provides uniform discharge performance of the working material (exit speed) taking into account the physicomechanical properties of the working material due to the optimal ratio of the tilt angle of the divider and the conical part of the funnel, in addition, the creation of a bunker vibratory activator, whose divider would ensure the destruction of sticky and / or frozen pieces of bulk product by changing the angle of inclination of the generatrix of the conical part tee divider.

To solve this problem, in a bunker vibration activator containing a hopper with a suspended profile funnel having cylindrical and conical parts, bearing a cross-shaped beam, vibrators are installed at the ends of it, and a conical divider, according to the invention, the angle between the generatrix of the truncated part of the divider and its base is (0 , 9-0.7) α, and the angle between the lower conical part of the funnel with the horizontal is (0.7-0.5) α, where α is the angle of friction of the material over the surface. The cylindrical part of the funnel is connected to the base of the conical part of the funnel by a surface in the form of a truncated cone. The lower part of the cylindrical surface of the funnel is limited by the line of intersection of the vector of the generatrix of the conical surface of the truncated cone of the divider, and the upper part of the lower conical part of the funnel is bounded by the normal to the edge of the divider, in addition, the lower part of the conical divider is made in the form of a truncated cone, while the base area of the cone with respect to the base area of the truncated cone is 0.4-0.6, and the angle of the generatrix of the cone is greater than the angle of friction of the working product on its outer surface.

The angle α is determined by the properties of the bulk material.

The choice of the angle between the generatrix of the divider and its base is equal to (0.9-0.7) α, and the angle between the lower conical part of the funnel with a horizontal equal to (0.7-0.5) α, where α is the angle of friction of the material on the inner surfaces its movement, due to the fact that a sequential decrease in the angle of inclination of the vibrating surfaces will provide support to the material relative to itself along the path of movement of it from the divider and along the inner surface of the funnel. The working material will move without seals and gaps and thereby ensure the uniformity of its unloading, which is very important for subsequent precise technological processes.

The execution of the connecting surface between the cylindrical part of the funnel and the base of the lower conical part of the funnel in the form of a truncated cone greatly simplifies the manufacture of the device, reducing labor costs.

The restriction of the cylindrical part of the funnel to the line of intersection of the generatrix of the conical surface of the divider, and the upper line of the lower conical part of the funnel to the normal to the edge of the divider, eliminates the narrowing of the cross-sectional areas of the product flow in this section of its movement and thereby contribute to the uniformity of product movement.

The execution of the divider with an angle at the apex, ensuring the steepness of the walls of the cone, with its vibrational movements during operation of the vibration activator will allow loosening the crumpled work product into smaller parts that can pass along the surface of the truncated cone and fall into the funnel.

The hopper vibration activator according to the second embodiment is shown in FIG. 2.

The hopper vibroactivator comprises a hopper housing 1, to which a profile funnel consisting of a cylindrical part 3 and conical parts 4 and 5 is attached to the suspensions 2. The profile funnel is connected by a cross-shaped beam 6, bearing in the center of the divider, the upper part of which is made in the form of a cone 7, rolling in a truncated cone 11. At the ends of the cruciform beams 6 installed vibrators 8. The conical part 5 of the profile funnel is equipped with a discharge pipe 9, which is located above the transport device, for example, conveyor 10. Top The main part of the divider 7 is made in the form of a cone with a small angle between the generatrix and its height to ensure loosening of the compacted working material in the hopper. Therefore, its walls are made steeply inclined with an angle greater than the angle of friction of the initial product (1.0-1.5α) with a base of 0.4-0.6 in area relative to the base of the truncated cone 11.

The proposed vibratory activator bunker operates as follows.

In the hopper 1 is filled with working (source) bulk material. In the stationary position of the vibration activator, the working product fills the inner space of the profile funnel in its cylindrical part 3 and conical parts 4 and 5 from the edges of the divider 7 to the edge of the pipe 9 at a natural angle of slope.

In some cases, the source material in the hopper can be compressed, clumped, or frozen into low-strength large-sized parts of the mass. When the activator is turned on when the material leaves the profile funnel, its subsequent parts in the zone of the cone 7 fall on its top and the walls during vibration of which the lumps are destroyed into smaller parts. For this effective action, the walls of the cone 7 are steeply inclined with an angle of inclination higher than the angle of friction of the material along the walls of the structure.

The proposed variants of the invention meet the criterion of "novelty", because at the filing date, technical solutions of the same purpose with the proposed set of features were not identified from sources of information.

The proposed variants of the invention meet the criterion of "inventive step, because the technical solutions are not known from the prior art, wherever each of the essential features of the distinctive part of the formula ensures the achievement of the specified result.

Claims (4)

1. Vibroactivator bunker containing a hopper with a suspended profile funnel having a cylindrical and conical parts, interconnected by a surface, bearing a cross-shaped beam, at the ends of which vibrators are installed, and a conical divider, characterized in that the angle between the generatrix of the divider and its base is ( 0.9-0.7) α, and the angle between the lower conical part of the funnel with the horizontal is (0.7-0.5) α, where α is the angle of friction of the material over the surface, in addition, the cylindrical part of the funnel is connected to the base of nical surface of the funnel in the form of a truncated cone, the lower part of the cylindrical surface of the funnel limited intersection line forming the conical surface of the deflector and the upper portion of the lower conical hopper portion is limited to the normal edge of the deflector. 2. The vibration activator according to claim 1, characterized in that the angle α is determined by the properties of the bulk material. 3. Vibroactivator bunker containing a hopper with a suspended profile funnel having a cylindrical and conical parts, interconnected by a surface, bearing a cross-shaped beam, at the ends of which vibrators are installed, and a conical divider, characterized in that the angle between the generatrix of the truncated part of the divider and its base is (0.9-0.7) α, and the angle between the lower conical part of the funnel with the horizontal is (0.7-0.5) α, where α is the angle of friction of the material over the surface, in addition, the cylindrical part of the funnel is connected with the base of the conical part of the funnel a surface in the form of a truncated cone, while the lower part of the cylindrical surface of the funnel is limited by the line of intersection of the vector of the generatrix of the conical surface of the truncated cone of the divider, and the upper part of the lower conical part of the funnel is bounded by the normal to the edge of the divider, in addition, the lower part of the conical divider is made in the form of a truncated cone, while the area of the base of the cone with respect to the area of the base of the truncated cone is 0.4-0.6, and the angle of the generatrix of the cone greater than the angle of friction material on its outer surface. 4. The vibration activator according to claim 3, characterized in that the angle α is determined by the properties of the bulk material.

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