WO1983001613A1

WO1983001613A1 - Lamellar construction for treating liquids

Info

Publication number: WO1983001613A1
Application number: PCT/HU1982/000051
Authority: WO
Inventors: Talalmanyfejleszto És Értékesito ... Novex
Original assignee: Gyulavari, Imre
Priority date: 1981-10-28
Filing date: 1982-10-14
Publication date: 1983-05-11
Also published as: EP0091919A1; IT1153290B; IT8223868A0

Abstract

Lamellar construction treating liquids, in particular for separating foreign matter from liquids, contacting the liquids with a gaseous substance, for biological treatment or cooling. The construction contains channels, the wall of the channels are formed by circular cross-section partitioning elements, preferably with identical radii, in such a manner that the edges of the individual circles are disposed at the centres of the inside of the adjacent circular elements or are connected thereto, furtheron the centre-point of the arcs coincide with the every second intersection point of a square or rectangular matrix, the spacing of which is larger than the radius of the circular arcs. In a characterizing manner the lamellar construction consists essentially of the elongated profile elements being confined by the quarters of the circular arc and having a closed cross-section and said quarters of the circular arc are confining one or more longitudinal channels. Along the outer contour line of the profile elements, arranged in a mutual pitch of 90<o>, longitudinal connecting elements running parallel with the axis of the profile element are to be found, by the aid of which the profile elements can be assembled into a lamellar construction in an easy and quick manner.

Description

Lamellar construction for treating liquids

Technical field

The invention relates to a lamellar construction for treating liquids, in particular for separating foreign matter from liquids, bringing in contact liquids with a gaseous substance, for biological treatment or cooling; the construction contains mutually parallel channels, the wall of the channels being formed by circular cross-section partitioning elements preferably with identical radii, in such a manner that the edges of the individual circles are disposed at the centres of the inside of the adjacent circular elements or are connected thereto, furtheron the centre-point of the arcs coincide with the every second intersection point of a square or rectangular matrix, the spacing of which is larger than the radius of the circular arcs.

Background art

In the industry, in particular in sewage purification the so-called lamellar separation is widely used, the essence of which lies in that the liquid to be purified is led through a lamellar construction forming several parallel channels, whereby under proper streaming conditions increased separation becomes possible. From the DE-OS 3 002 417 a lamellar construction having been described in the preamble is known, showing several advantageous features when compared to known lamellar constructions. From the point of view of fluid mechanics the structure is to be considered as most advantageous, since the wetted periphery related to the unit cross-section is considerably larger, than with the known lamellae, resulting in a relatively smaller hydraulic readius, as the hydraulic radius represents the quotient of the unit-cross-section and the wetted periphery. Taking into consideration that a low Reynolds-number is belonging to the small hydraulic radius, in the laminar structure according to the DE-OS 3 002 417 a laminar stream being advantageous from the point of view of separation will be formed. At the same time production of said lamellar structure involves certain difficulties, since the modern processes of high productivity are unsuitable for manufacturing these types of lamellae, however, when less modern process are used, surfaces being unobjectionable from the point of view of streaming cannot be obtained, simultaneously manufacturing is not economical at all.

Disclosure of Invention

The aim of the invention is to develop the lamellar structure having been mentioned in our preamble in such a manner that partly the desired surfacial smoothness could be obtained, partly the lamellar structure could be produced by using modern methods of high productivity.

According to the invention the task set is solved in such a manner that a lamellar construction containing parallel channels, - in which the wall of the channels are formed by circular cross-section partitioning elements preferably with an identical radius, whereby the edges of the individual circles are disposed at the centres of the inside of the adjacent circular elements or are connected thereto, furtheron the centre-point of the arcs coincide with the every second intersection point of a square or rectangular matrix, the spacing of which is larger, than the radius of the circular arc, - is composed of longitudinal profile elements being essentially confined by the quarters of a circular arc and having a closed cross-section and in which said quarters of the circular arcs are confining one or more longitudinal channels, and on the profile elements, along the outer contours, in a mutual pitch of 90°, longitudinal connecting elements being parallel with the axes of the profile elements are formed. With a preferred embodiment, the profile element consists of four symmetrically arranged concave quarters of the circular arc which are practically meeting in a peak on two opposite sides, while on the other opposite sides they are interconnected by a bridge, forming in such a manner a closed channel, furtheron the connecting elements are arranged at the peaks and the bridges.

¥ith another preferred embodiment the cross-section of the profile element is formed by four convex quarters of the circular arc and within the circle having been formed in such a manner four concave quarters of a circular arc are arranged, which are meeting in a peak on the two opposite sides, while on the other two opposite sides they are connected to the closed circle with a spacing; in such a manner within the closed circle four channels with identical cross-sections will be formed, while one channel has a different cross-section, I n this case, the connecting elements are arranged outside the closed circle, at the meeting points of the concave quarters of the circular arcs. With both embodiments the connecting elements can be shaped in a different manner. One advantageous method lies in that out of the four connecting elements of the profile element three are formed as an insertable plug-in type, while the fourth is a multi-parted receiving connecting element of the female type.

With a further preferred embodiment out of the connecting elements two are of the plug-in-type, while the other two of the famel type.

All the embodiments can be characterized in that the profile elements and the connecting elements can be manufactured by extrusion.

The most important advantages of the lamellar structure according to the invention are the following; - the profile element forming the structural unit of the lamellar construction can be manufactured by extrusion in an optimal manner, with a high producting speed and with an economical technology;

- in course of the extruding process different element lengths can be produced, as a consequence, the lamella-bodies can be manufactured in compliance with the different destinations, resulting in a high-grade flexibility of the system;

- surfacial smoothness of the profile elements having been manufactured by extrusion is far better than the smoothness to be obtained by other technologies, e. g. by the vacuum shaping process; - the profile elements of the lamellar construction having been formed in accordance with the invention by extrusion may be prepared of different materials in dependence of the destination, whether the construction is for the purification of dring water, oil-contaminated sewage, or normal sewage, etc.; - by using the lamellar construction according to the invention comprising the profile elements, by means of the connecting elements disadvantageous and wearisome assembly operation, as e. g. gluing, can be eliminated. In such a manner a higher productivity, more economical concentration and pre-fabrication become possible;

- by applying the lamellar construction according to the invention having been built up of the profile elements, the space of the existing basins e. g. of circular or circular arc chape can be well utilized, accordingly "dead spaces" may be avoided;

- by using the connecting elements, a continuous lamella-field of optional size and magnitude can be form ed;

- the connecting elements render the lamellar construction releasable, that means, that the single profile elements can be exchanged, e. g. when the technological ducts are crossing the lamellar structure in the object. In such a case one or two profile elements may be left out and the problem of crossing is immediately solved;

- by using the profile elements according to the invention so-called lamella-bodies of higher loadability, accordingly of larger dimensions can be prepared, as a result, the dimensions of the supporting steel structures may be smaller, also resulting in material savings;

- by working with the extrusion technology it can be ensured that in course of pre-fabrication lamella- elements of different angles of inclination could be produced, accordingly in course of the local assembly different cutting processes become superfluous, so assembly can be considerably accelerated; - the surfacial smoothness to be obtained by extrusion yields the possibility of avoiding silting, as sludge is gliding-off easier, as a consequence, the lamellar structure does not require frequent cleaning and washing, whereby oρera tion is simplified and simultaneously operative costs decrease;

- with the profile elements having been prepared by extrusion there are no joint gaps within the cross- section of the lamellae, yielding the possibility of silting. This circumstance - i. e. the elimination of sludgetraps - increases the operational safety and decreases expenditures of maintenance;

- with the lamellar structures having been built-up with the profile elements and the connecting elements according to the invention the single elements may be easily removed, - e. g. for the sake of control or re-arrangement -, it goes without saying that the whole system can be disassembled in the same easy manner.

Brief Description of Drawings

The invention will be described in details by means of two preferred embodiments illustrated purely by way of example in the drawings, in which

Fig. 1 is a schematic sectional view of the profile element consisting of the concave quarters of the circular arc,

Fig_. 2 the cross-section of a part of the lamellar construction having been built up of the profile elements according to Fig. 1,

Fig. 3 is a sectional view of the profile element with a cross-section consisting of the concave and convex quarters of the eircular arc, Fig. 4 is a part of the lamellar structure having been built up of the profile elements shown in Fig. 3.

Best Mode of Carrying out the Invention

Keferring to the Fig. 1 and 2, the profile element 1 is having a cross-section composed of four concave quarters of a circular arc. On the two opposite sides the concave quarters of the circular arc 2 are meeting in the peak 3, while on the other two opposite sides they are inter connected by means of the bridge 4. In such a manner a closed channel 7 is formed in the profile 1. The longitudinal connecting elements running parallel with the longitudinal axis of the profile element 1 are arranged at the peaks 3 of the profile element 1 and on the bridges 4.

With the embodiment to be seen in Fig. 1 and 2 on the two peaks 3, as well as on one of the bridges 4 an insertable connecting element 5 of the so-called plug-in-type is to be found, while on the other bridge 4 a connecting element 6 of the female type consisting of several parts and receiving the other one, is arranged. In Fig. 2 it can be well seen, in what manner the insertable connecting elements 5 of the plug-in-type are engaged with the multiparted connecting element 6 of the female type. Vith our example the connecting element 6 consists of three parts, that means that it is able to receive simultaneously three connecting elements 5.

Referring to the Fig. 3 and 4 the profile element 8 is formed of four convex quarters of a circular arch 9, which are forming collectively a closed circle. In said closed circle four concave quarters of a circular arc 2 are arranged so, that their two opposite sides are meeting in the peak 3, while the other two opposite sides are connected to the closed circle with the spacing 10. In such a manner in the profile element 8 four channels 7 with identical cross-sections are formed, while there is a further channel 7 with a different cross-section. Outside the closed circle the connecting elements are to be found, i. e. at one of the peaks 3 and at one of the spacings 10 the connecting element 5 of the plug-in-type is arranged, while at the other spacing 10 the receiving connecting elements 12 and 13, respectively, of the female type are to be found. In case of our example the connecting elements 12 and 13 are of different formation, however they can be formed in the same manner.

In Fig. 4 the construction of the lamella-structure with the profile elements 8 is shown. It can be well seen in which manner the profile elements 8 are connected by means of the connecting elementd 5, 12 and 13.

Both the profile element 1 and 8 are made by extrusion, the basic material to be used is in compliance with the field of application, i. e. whether drink water, oilcontaminated sewage, normal sewage are to be purified. The connecting elements are extruded together with the profile elements, that means that completely finished profiles are leaving the extruder.

It goes without saying that the invention is not at all restricted to the embodiments described here as an example. It is quite obvious that within the disclosure having been defined by the claims several modifications are possible. So e. g. the profile 1 may be prepared with the connecting elements 12 and 13, similarly the profiles 8 may be provided with the connecting element 6. The connecting elements themselves may be prepared in several forms differing from those specified here. E. g. a connecting element may be developed which is universal, i. e. it can be equally used as an inserted and a receiving element, respectively.

Claims

Claims:

1. Lamellar construction for treating liquids, in particular for separating foreign matter from liquids, bringing in contact liquids with a gaseous substance, for biological treatment or cooling, where the construction contains mutually parallel channels, the walls of the channels being formed by circular cross-section partitioning elements preferably with identical radii, in such a manner that the edges of the individual circles are disposed at the centres of the inside of the adjacent circular elements or are connected thereto, furtheron the centre-point of the arcs coincide with the every second intersection point of a square or rectangular matrix, the spacing of which is larger than the radius of the circular arcs, c h a r a c t e r i z e d in that the construction consists essentially of elongated profile elements (1) being confined by quarters of a circular arc (2) and having a closed cross-section, and the quarters of the circular arcs (2, 9) are confining one or more longitudinal channels (7, 11), furtheron, along the contour lines, of the profile elements (1, 8) having been arranged with a mutual pitch of 90 , longitudinal connecting elementa (5, 6, 12, 13) running parallel with the longitudinal axis of the profile element are arranged.

2. Lamellar construction as claimed in claim 1, c h a r a c t e r i z e d in that the profile element (1) consists of four symmetrically arranged concave quarters of the circular arc (2), meeting practically in the peak (3) on the opposite sides, while on the other two opposite sides they are interconnected by a bridge (4), forming in such a manner a closed channel (7), furtheron the connecting elements (5, 6 ) are arranged at the peaks (3) and the bridges (4).

3. Lamellar construction as claimed in claim 1, c h a r a c t e r i z e d in that the cross-section of the profile element (8) is formed by four convex quarters of a circular arc (9), and within the circle thus formed four concave quarters of the circular arc (2) are arranged, which are meeting in a peak (3) on the opposite sides, while on the other two opposite sides they are connected to the closed circle with a spacing (10), whereby in the closed circle four channels (7) with an identical cross- section are formed and a further channel (7) with a different cross-section and the connecting elements (5, 12, 13) are lying outside the closed circle, at the meeting points (3, 10) of the concave quarters of the circular arc.

4. Lamellar construction as claimed in any of the claims 1 to 3, c ha r a c t e r i z e d in that out of the four connecting elements (5, 6) of the profile element (1, 8) three connecting elements (5) are of the insertable plug-in-type,, while the fourth is a multi-parted receiving connecting element (6) of the female type.

5. Lamellar construction as claimed in any of the claims 1 to 3, c h a r a c t e r i z e d in that two out of the connecting elements (5, 12, 13) are connecting elements (5) of the insertable plug-in-type, while the other two are receiving connecting elements (12, 13) of the female type.

6. Lamellar construction as claimed in any of the claims 1 to 5, c h a r a c t e r i z e d in that both the profile elements (1, 8) and the connecting elements (5, 6, 12, 13) are prepared by extrusion.