SK105095A3 - Enclosure forming a tank or silo - Google Patents

Abstract

A polygonal enclosure forming a tank or silo and including side walls (3) and corner posts (2) arranged around a vertical axis (10) and connected to said walls to define the geometricsl area of the enclosure. Said corner posts (2) are shaped in such a way that their cross-section fits into part of a cylinder, thus forming a concave surface facing the enclosure axis (10), and take up vertical stresses on the enclosure. The posts (2) and walls (3) are reinforced by vertically spaced horizontal reinforcing belts (1) secured to the outer wall of the enclosure for taking up horizontal stresses. The enclosure may be used as a tank or silo.

Description

Technical field

The invention relates generally to a polygonal enclosure forming a reservoir or silo and with side metal walls formed by corner uprights arranged around a vertical axis and interconnected by sheet metal plates.

BACKGROUND OF THE INVENTION

The silos for storing bulk materials, especially powdered materials, are widely spread and generally have a structure corresponding to that shown in FIG. In the structure thus conceived, the silo is formed by a plurality of columns and casings having a corrugated structure which alternately opens to one and then to the other side, the whole thus defining the outer shell of the force. This outer sheath is lined inside with smooth sheets allowing a perfect flow of the material thus deposited through a chute dump arranged at the bottom of the enclosure. In addition, the silos are equipped with additional rounded corners to prevent the material from sticking to the corners of the silo. Such a concept is described, for example, in FR-A-2 459 861. In such a construction, it is not possible to use a fencing assembly of prefabricated cells with respect to the number of wall construction elements. weight. In this construction, it is also necessary to provide welded flanges along the inner walls of the enclosure to fasten the rounded corners. These welded flanges create irregularities in the smooth inner wall of the silo, in which the stored material is trapped and retained in the silo, under which conditions the silo cannot be operated under hygienically acceptable conditions.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a new type of storage enclosure characterized by an easy assembly and low purchase costs that is prefabricated or modular and which allows perfect flow of the stored material and hence hygienically acceptable operation.

SUMMARY OF THE INVENTION

The object of the invention is a polygonal enclosure forming a container or silo and comprising side walls and corner uprights arranged around a vertical axis, wherein the corner uprights are connected to the side walls to define the geometric space defined by the enclosure, characterized in that the corner uprights are profiled have a profile inscribed in a portion of the roll to form a concave surface facing the fencing axis and form means for absorbing vertical stress on the fencing, wherein the corner uprights and side walls are provided with horizontal reinforcing strips arranged at different heights along the outer wall of the fencing and connected to said outer fencing wall to form means of picking up the horizontal stress of the enclosure.

Other features and advantages of the invention will be apparent from the following description and from the accompanying drawings, in which:

Fig. 1 shows a perspective view of a fencing according to the prior art; Fig. 2 shows a perspective view of an embodiment of a smooth sheet metal fence according to the invention; Fig. 3 shows a plan view of a connecting piece between two straight profiles for making a reinforcing strip;

Fig. 4 shows in a perspective view and in an exploded state the components of a modular cell according to the invention, and

Fig. 5 shows in a perspective view and in an exploded and collapsed state the components of another embodiment of a modular cell according to the invention.

The polygonal enclosure of the invention comprises side walls 2 and corner uprights 2 arranged around a vertical axis 10, the corner uprights being connected to the side walls to define the geometric space of the enclosure. The corner props 2 are profiled so that they have a profile inscribed in a portion of the cylinder to form a concave surface facing the vertical fencing axis 10, and form means to absorb the vertical stress of the fencing. The side walls of the fencing generally comprise a plurality of sheets of smooth sheet metal joined at the level of their adjacent edges by welding. These plates 5 are preferably arched in a pyramidal manner to increase their strength. In addition, the corner uprights 2 and the side walls 2 are wrapped with reinforcing strips 1 arranged at different heights along the outer wall of the enclosure and connected to the outer wall to form a means to absorb the horizontal stress of the enclosure. These reinforcing strips 1 are formed by assembling tubular profiles which preferably have a rectangular cross-section.

In addition, the profiles forming the reinforcement strip are connected to the plates 5, this connection being made on the outside of the plates at the plane of the joint of the two plates, as shown in Fig. 2.

In the preferred embodiment of the invention according to FIG. 2, the circumference of the enclosure delimited by the metal plates 5 and the corner props 2 is inscribed in the corresponding polyhedron geometrically delimited by the reinforcing strip 1.

The frames forming the reinforcing strips and obtained by pre-assembling the tubular profiles are placed on a flat surface, then the corners of the frames are welded to the inner parts of the frames and the sheets of sheet metal forming the side walls are welded to the structure thus obtained. The completely prefabricated enclosure is then provided with a hopper at its bottom.

A modular enclosure structure may also be used, which is particularly useful when such a enclosure is to be installed at a location remote from the site where the enclosure is manufactured. Thus, in the case where the enclosure is formed by modular elements, the reinforcing strips comprise straight profiles connected by the insertable connecting parts 6, 8 forming the corners of the reinforcing strips. Said straight profiles are pre-attached to the pre-assembled sheet metal sheets 5 to form the side walls of the fencing and at the moment of fitting the flanges 6, 8 of the frame are fixed after positioning the side walls, then the corner uprights are fixed. As can be seen from FIG. 4, the connecting piece 6, 8 between two straight frame profiles is formed (as shown in detail in FIG. 3) by a two-armed tubular profile, the arm 8 being provided with an external radial shoulder 7 which limits the introduction of the arm and the second leg 6 is formed by a double-sided open profile, into which the rectangular profile 9, the length of which is greater than the length of the leg 6, is inserted and fixed therein so that the profile 9 can be inserted into the second straight. of my profile and inside. The same procedure shall be followed for each corner of the frame.

In the second embodiment of the enclosure structure shown in FIG. 5, the side walls of the enclosure are the same as the walls already defined above, i. walls formed by pre-assembled sheet metal sheets 5 to which are attached straight profiles forming one of the elements of the reinforcement strips, assembled with a corner upright 2 to which a hollow profile is fixed at right angles to welding and defines the corner of the reinforcement strip 1. In order to assemble the side walls together in this case, it is sufficient to introduce the rectangular profile 9 into said hollow profile and to fix the rectangular profile 9 inside the hollow profile in such a way. already described above.

The modular or completely prefabricated enclosure described above is applicable to many applications as a reservoir or silo for the storage of any substance in granular, powder or other form.

The fences can also be assembled together by screwing together, in which case the flange-forming elements must be attached to the fences at the level of the reinforcing strips by welding. In addition, due to this fencing concept, it is possible to isolate the fencing module by placing a suitable roller conveyor in the space defined by the profiles of two adjacent reinforcing strips.

Claims (8)

PATENT CLAIMS Polygonal enclosure forming a container or silo comprising side walls (3) and corner uprights (2) arranged around a vertical axis (10), the corner uprights (2) being connected to the side walls (3) to define the geometric space of the enclosure, indicated in that the corner uprights (2) are formed such that their profile forms part of a cylindrical wall and forms a concave surface facing the vertical fencing axis (10), and form means for absorbing the vertical stress of the fence, the corner uprights (2) and lateral walls (3) surrounded by horizontal reinforcing strips (1) arranged at different heights along the outer wall of the enclosure and attached to the outer wall of the enclosure to form a means for absorbing horizontal stress on the enclosure. Fence according to claim 1, characterized in that the reinforcing strips (1) form a set of tubular profiles, preferably with a rectangular cross-section. The fence according to claim 1 and 2, characterized in that the side walls (3) of the fence are formed by several sheets (5) of sheet metal which are joined together by welding at their adjacent edges, the profiles forming the reinforcing strip (1) being connected to the sheets (5). 5) the sheet metal by attaching to the outside of the sheet metal sheets (5) at the plane of the joints between the sheet metal sheets (5). Fence according to claim 3, characterized in that the sheets (5) of the sheet have a pyramidal shape. 5th The fence according to any one of claims 1 to 3, characterized in that the circumference of the fence defined by the metal plates (5) and the corner uprights (2) is inscribed in a polyhedron corresponding to the geometric shape of the reinforcing strip (1). Fence according to one of claims 1 to 5, characterized in that the fencing is made up of modular elements, wherein the reinforcing strips (1) comprise straight profiles connected by plug-in connecting parts (6,8) and the straight profiles are pre-fastened to the pre-assembled plates (5). ) of the sheet metal to form the side walls of the enclosure in such a way that, at the time of assembly, after the side walls have been set in position, they are fastened to the side walls by connecting pieces (6,8) and subsequently attached to the structure of the corner upright (2). Fence according to claim 6, characterized in that the connecting piece (6, 8) between two straight profiles of the reinforcement strip forms a two-armed tubular profile, one arm (8) of which comprises an external radial shoulder (7) limiting the introduction of said arm into the straight tubular. the profile, and whose second leg (6) forms a double-sided open profile, into which it is inserted and inside which a rectangular profile (9) is extended with a length greater than the length of the leg (6) so that this profile can be introduced into the second straight profile and in this profile. Fence according to one of Claims 1 to 5, characterized in that the fencing comprises modular elements, wherein the reinforcing strips (1) comprise pairs of angular-shaped profiles, one arm of which is pre-fastened to the pre-assembled sheet metal sheets (5) to form lateral of the enclosure walls, and the second hollow arm of which is pre-attached to a corner upright (2) attached to the side wall, such that at the time of assembly, the side walls are connected to each other by setting the profile (9); the hollow arm, so that said profile (9) can be immobilized within said hollow profile and inside Τ \) -ΊΓ another adjacent angle-shaped profile.