ES2201857B1 - PERFECTED CONDUCT FOR DISPLACEMENT AND ASPIRATION OF BULK OR PULVERULENT MATERIAL. - Google Patents

Abstract

Improved duct for displacement and aspiration of bulk or powder material. The duct is formed by coupling with each other a series of sections (1), with curved sections (1 ''), each section being formed by the concentric coupling of two tubes (2-3) of different diameter, the tube being internal (3) equipped with rings (4) in function of separators between both tubes (2-3), determining spaces (5) between both tubes and the separators (4), for the storage of material that could leave through perforations made on the inner tube (3) through which the material is transported. In the curvilinear sections (1 '') there are longitudinal partitions determining spaces for storage of the material and prevent it from falling to the bottom of the curvilinear section itself (1 '').

Description

Improved duct for displacement and suction of bulk or powdery material.

Object of the invention

The present invention relates to a conduit used for the distribution or displacement of material to bulk, or even for the aspiration of powdery material, of From one place to another. The duct, determined by axial coupling of several sections, presents the particularity that each section is formed by two concentric tubes duly connected to each other to determine between them a camera that will serve to prevent the material that circulates through the inner duct can be lost to through holes or cracks that originate during the material displacement.

It is the object of the invention to provide a conduit of characteristics such that its useful life will be noticeably larger than that of conventional ducts Used for the same purposes.

Background of the invention

The use of ducts or tubes through which is an internal displacement of a material to Bulk or powdery, for moving that material from one place to another, it is a common practice in certain sectors, quoting as more common works in quarries or Extractions intended for the manufacture of ceramics, brick, etc., in which usually the raw material in bulk, such as stone,  gravel clay, etc., must be crushed and screened, crumbling in the respective mills and subsequently selected in the sieves, separating the finest dust for use and Forwarded to the mill again that bulk material of minors dimensions that have not finished crushing, repeating the cycle repeatedly until it is crushed into smaller particles.

During that repetitive and continuous process that just referred the duct or tube of any nature, well metallic, iron, PVC or even rubber or plastic, leaves cracking and even perforations of it occur in different sections or places, all due to the collision of the material during its movement along the duct or tube.

On the other hand, the mills through which carries out the shredding of the material, produce currents of very high air, reheating by the applied speed, air stream that accompanied by dust accumulates throughout the circuit, requiring suction filters to prevent they spill dust particles and to absorb some of the moisture, in addition to eliminating clean air outside, all in order to facilitate the operation of the mill. Aspiration and air displacement with dust particles is effected also through ducts, damaging the internal walls and being necessary a change and repair of them in periods relatively short

In practice and due to continuous use, that type of ducts comes to last approximately four to six months without drilling, so when the period of perforation and / or cracking, the tubes must be plugged, repaired or even changed to avoid material losses, with the consequent economic cost, not only in terms of the cost of the tubes themselves but even waste of time by the Operators to solve the problem.

Finally say that this type of ducts used for the displacement of bulk material or powdery, whether displacement or aspiration, are formed by the succession of sections coupled to each other, in order to obtain a duct of long distance and considerable diameter, being able to Even vary its shape.

European Patent No. 522858 describes a improved duct for bulk materials, intended to attempt solve part of the problems referred to above, constituting the duct based on a succession of hoppers Frustoconic that remains upright and separated, the adjacent axes of said inclined hoppers being in different positions in relation to the longitudinal axis of the duct that determine them.

This solution, although it causes the duct to form the hoppers be less exposed to cause degradation of the bulk material that is being transported, does not solve the tube perforation problem that originates the material itself, In addition to assuming a complex and expensive solution, due to the specific arrangement and assembly of the hoppers.

Description of the invention

The conduit that is recommended has been conceived to solve all the problems described above, based to a simple and effective solution, based on the provision concentric of two tubes, logically one of greater diameter than another, so that the material is transported through the inner tube, being externally endowed with a series of rings that remain perfectly located between the outer wall of said inner tube and the inner wall of the outer tube, determining spacers between both tubes and determining that between them a chamber is determined divided into spaces, which will correspond to the distance between each adjoining pair of separators, so that at the time that there is a perforation in the inner tube the material that can exit through that perforation in its transport by the tube accesses the chamber space determined between the two contiguous separators, without missing that material, since it will remain in that camera, and more importantly, there will come a time when this can be filled and even the material itself can plug the hole or holes that have been produced, the elongated Shelf life of both the inner tube and the outer tube.

When the time comes for the inner face of the outer tube has already deteriorated too much and the space, determined between the two contiguous dividers, already practically does not exist or does not fulfill its function, it will be enough to disassemble only the defective section and change the conduit for a new one, being able to use the same external conduit and the same separators. At if this deterioration is not visible as it happens in most of the cases, the operator will notice the same when deteriorate the external duct, although this will always occur in a time or period much longer than usual  impact on the longer duration of the external duct.

As usual, this type of duct is formed by the union of several sections of ducts, of so that according to the object of the present invention, the conduit external will be equipped at its flange ends not only for join together sections of external conduit, but constitute in the middle of fixing the inner tube.

In those cases where the duct is present curvilinear sections, in the space between the mouth of the conduit and the corresponding separator or separators, are included longitudinal partitions, which in addition to strengthening the area or curvilinear section, determine spaces so that in the case of a perforation the material is retained in the space or chamber determined between the two tubes and logically between the partitions Longitudinal, preventing the material from always falling towards the lower zone of the duct.

Finally, it should be noted that the device of the invention can adopt any other configuration in addition to the already referred to concentric tubes. Indeed, said configuration will be determined depending on the device to which the device of the invention is incorporated, such as a mill, a shredder, etc. In the case, for example, of a shredder, your configuration will be prismatic-rectangular so that it covered the entire entrance or mouth of said shredder. In this case, for consequently, both the outer duct and the inner duct and the separators would also adopt the aforementioned configuration.

Description of the drawings

To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization of it, is accompanied as part member of that description, a set of drawings where with illustrative and non-limiting nature, what has been represented next:

Figure 1.- Shows an exploded view of two tubes that will constitute a section of conduit made of according to the object of the present invention, observing the outer tube with flanges at its ends and the inner tube with the rings in function of separators when it is coupled axially and concentrically in the outer tube itself.

Figure 2.- Shows a longitudinal view of a conduit made in accordance with the object of the present invention, even equipped with a curved section, showing the coupling flanges between the different sections of the duct as well as the separators corresponding to the inner tubes.

Figure 3.- Shows a plan view a through one of the ends of a section of duct, leaving see the external flange corresponding to the outer tube, which It constitutes a means of fixation for the inner tube.

Figure 4.- Shows a representation according to an overview of a section of curvilinear duct, in the that you can see the longitudinal partitions provided between the two  tubes of the section, and whose partitions run between one of the separators of that curvilinear section and the corresponding end or mouth of it.

Preferred Embodiment of the Invention

As you can see in the referred figures, the duct of the invention is constituted by coupling successive of a series of conduit sections (1) that can combine or not with curvilinear sections (1 '), so that each section is formed by an external tube (2) and an internal tube and concentric (3), logically this one of smaller diameter, so that the latter has a series of rings (4) that in the assembly of such internal tube in the external tube (2) determine elements separators between the two, all so that between the tube internal (3) and external tube (2) an annular chamber is determined originated by the different diameters of such tubes, and whose chamber It is divided into spaces (5) delimited between each pair of contiguous separators (4) and logically between the inner tube (3) and the outer tube (2).

The union between tubes is done by flanges (6) provided at the ends of the different tube sections external (2), so that these flanges (6) not only serve to fix the outer tubes (1) together to form the duct general, but also constitute the fixing means, by  welding or any other conventional system, of the inner tube (3).

In the curvilinear duct sections (1 '), such as is represented in figure 4, between the spacers (4), or between the separator and the corresponding mouth or end of the section (1 '), as shown in figure 4, some  longitudinal partitions (7) that determine spaces or chambers (5 ') in that curvilinear section (1 ') for the function that will be exposed more ahead.

According to the structural characteristics referred, when the bulk or powder material moves through the interior of the internal duct (3), there comes a time when by the continuous use and collision of the different particles with the wall of that inner tube (3), perforations occur in certain sections of this one, so that the material will leave entering through that hole or hole and accessing to the corresponding space (5) established between two separators contiguous (4), whether they are straight sections of the tube (1) or sections tube curvilinear (1 '). In that way and as it was introduced material in spaces (5) or spaces (5 ') in which it has been After drilling, the collision of this material will be avoided with the outer tube (2), and even the material itself deposited in that space (5) or (5 ') may make a blockage or obstruction of the corresponding drilling, thus extending the useful life of the inner tube (3), and of course the outer tube (2).

The deterioration of that section of inner tube (3), when appreciable, it will be replaced by another maintaining the section corresponding external tube (2), while when this is also deteriorated, just change the entire section (1) of conduit, but always deterioration in this case will occur in a period of time much longer than what has been habitual.

As for the spaces (5 ') determined by the partitions (7) provided longitudinally in the sections curvilinear (1 '), similarly have the purpose of allowing the accumulation in that space (5 ') of the material that could leave through a hole made in that area of the inner tube (3), preventing that material from falling to the lower area of the conduit, as would always occur in curvilinear sections.

Claims (4)

1. Improved duct for displacement and aspiration of bulk or powdery material, which being formed by the successive coupling of a series of sections (1) or even with the intercalation of curvilinear sections (1 '), essentially characterized in that each section (1 -1 ') is constituted by a pair of concentric tubes (2-3), of different diameter, determining between them a chamber divided into spaces (5) delimited by separators (4) constituted by rings provided in the inner tube (3) , the diameter of these separators (4) being equal to the internal diameter of the external tube (2) to determine independent and isolated spaces (5) between both tubes (2-3), determining a means of accumulation of material tending to flow through the perforations made in the transport of said material through the inner tube (3). 2. Improved duct for displacement and aspiration of bulk or powder material, according to claim 1, characterized in that longitudinal partitions (7), between the separators (4) or between one are provided in the curvilinear sections (1 ') of the duct of these and the end corresponding to the curvilinear section (1 '), determining spaces (5') for accumulation of material, preventing it from falling into the lower area of that section (1 ') of conduit. 3. Improved duct for displacement and aspiration of bulk or powdery material, according to previous claims, characterized in that the sections of the outer tube (2) have flanges (6) for fixing the successive sections and for fixing the tubes corresponding internal (3). 4. Improved duct for displacement and aspiration of bulk or powdery material, according to previous claims, characterized in that both the external and internal sections as well as the separators, can adopt any other configuration, such as prismatic-rectangular so as to be able to be coupled to the entrance or mouth of different devices.