FILTER ELEMENT

Abstract: Filter element, comprised of a filtration part and a supporting or mounting frame for the retaining of the filtration part, which frame is formed by a profile with a centre part and two opposite disposed border parts, between which the filtration part may be retained, while in between and onto the two opposite border parts a strip of material is firmly fixed.

Description: Filter element. The invention relates to a filter element, whereby the filter element is intended to be installed standing or hanging within a filter vessel, and whereby the filter element is formed by a filtration part and a supporting- or mounting frame for the retaining of the filtration part, which frame has a substantially U- shaped section and is formed by a profile having a centre part and two opposite border parts, between which border parts the filtration part can be enclo¬ sed. Such a filter element is known. When manufacturing such a known filter element the filtration part is slided between the border parts into the profile at a distance from the centre part, after which the border parts are fastened onto the filtration part. This generally takes place by connecting the border parts together with the filtration part placed therein between by means of rivets. During the bending of the profile into a shape which is adapted to the measurements of the filtration part, as well as during the mounting of the filtration part into the profile, it is possible that the two opposite border parts are displaced with respect to each other, which displacement of the border parts with respect to one another is continued along the entire periphery of the frame. With a finished element the aforesaid displacement is only partly prevented by the rivet connection, and the element may easily become deformed. This is considered a drawback. Also, the lack of torsional stiffness of the known filter element has a very negative influence on the manoeuvrability of the element. The invention aims to obviate this drawback of the known filter element. The filter element according to the invention is to that end characterized, in that between and onto the two opposite border parts of the profile a strip of material is firmly fixed. According to a further characteristic of the filter element according to the invention, two or more strips of material are placed at a distance from one another in the longitudinal direction of the profile. The strip or the strips may thereby be mounted in various ways. According to a characteristic of the filter element according to the invention the strip or strips are placed extending parallel to the longitudinal direction of the profile. According to a further characteristic the strip or strips are placed at a distance from the centre part. Other features and characteristics of the filter element according to the invention will be explained with reference to the drawings of an embodiment by way of example. Fig. 1 is a front view of a filter element according to the invention. Fig. 2 is a perspective view of a part of a profile according to the invention. Fig. 3 is a cross section of the profile. Fig. 4 is a part of a profile shaped into a bend. Fig. 5 a and 5 b are a cross section respectively a longitudinal section of another embodiment of the filter element according to the invention. As is shown in Fig. 1, the filter element is formed by a supporting- or mounting frame 1, which is formed by a profile 2 having a substantially U-shaped section, with a centre part 3 and, as shown in Fig. 2 and 3, two opposite disposed border parts 4. Between the border parts 4 the filtration part 5 is retained, which may consist of a heavy wire netting 6 over both sides of which a support gauze 7 is applied, and over which a filter gauze 8 is applied. As is shown in Fig. 3, the filtration part is slided up to at a distance from the centre part 3 between the border parts 4 of the frame. The two border parts are further provided with openings 9 for the rivet connection 10. In the example of an embodiment according to the drawing, between the border parts 4 which extend paral¬ lel to the longitudinal direction of the profile, a strip 11 is placed, which in this example of an embodiment is placed within a slot 12, which is pre- sent in both border parts. The strip is mounted in the border parts by means of a weld connection 13. As shown in Fig. 4 multiple strips may be placed in the longitudinal direction of the profile, for example in a bended section of the profile. Figures 5 a and 5 b show another embodiment of the filter element according to the invention. Two strips of material 11 are mounted such, that at one border part 4 they meet with their end parts 14, while at the opposite border part the strips 11 with their other end parts 15 are spaced apart. The end parts 14 form an angle of 90 degrees with respect to each other, and the end parts 15 form an angle of 45 degrees with respect to the border part 4 to which they are attached. The filter element according to the invention in compa¬ rison with the known filter elements has a greater formhold and is much stiffer at handling.

Claims: C L A I M S . 1. Filter element, comprised of a filtration part and a supporting- or mounting frame for the retaining of the filtration part, which frame is formed by a profile with a centre part and two opposite disposed border parts, between which the filtration part may be retained, characterized in that between and onto the two opposite border parts a strip of material is firmly fixed. 2. Filter element according to claim 1, characterized in that two or more strips are placed in the longitudi¬ nal direction of the profile at a distance from each other. 3. Filter element according to claim 1 or 2, characte- rized in that the strip or strips are placed extending parallel to the longitudinal direction of the profile. 4. Filter element according to claim 1, 2 or 3, charac¬ terized in that the strip or strips of material are mounted between the border parts at a distance from the centre parts. 5. Filter element according to claim 1, 2, 3 or 4 , characterized in that two or more strips of material are mounted such, that at one border part the strips meet with their end parts, while at the opposite border part the strips with their other end parts are spaced apart. 6. Filter element according to claim 5, characterized in that the strips are mounted such, that at the point where they meet they form an angle of 90 degrees. 7. Filter element according to any of the preceding claims, characterized in that the strip or strips are inserted in a recess or slot provided in a border part. 8. Filter element according to any of the preceding claims, characterized in that the profile and the strip or strips are formed by metal. 9. Filter element according to any of the preceding claims, characterized in that the strip or strips are mounted onto or into the border parts by means of a weld connection.

Inventors: PLAISIER LEENDERT, PLAISIER, LEENDERT
Applicants: AMAFILTER BV, PLAISIER LEENDERT, PLAISIER, LEENDERT
Application year: 1993
Main classification: B01D29
IPC codes: B01D29