Device for supporting a rotating frame of a filtration installation

#The present invention relates to a device supporting a rotating frame for a filtration installation with filtration cells disposed in a carousel, comprising support rollers that each have a pivot axis and that support the rotating frame so as to allow a rotation of the latter about a rotation axis of the carousel, and per roller, a fixed bearing that supports the roller so as to allow its pivoting, the bearing comprising a first arm and a second arm disposed on each side of the roller in order to carry it so as to allow its pivoting.

#Filtration devices with filtration cells disposed in a carousel have already been known for a long time, which are in particular in use in the production of phosphoric acid, copper, cobalt, zinc, uranium, etc hydrometallurgy, the washing of active carbon or phosphates and the filtration of acids in general.

#The cells in these installations are supported by a rotating frame generally comprising two rings each formed from several rails arranged one behind the other in a circular manner, these rings resting on support rollers (see in particular U.S. Pat. No. 3.389.800).

#Other details and particularities of the invention will emerge from the description given below non-limitingly and with reference to the accompanying drawings.

#FIGS. 1 and 2 show a lateral view and respectively a view in section, along the line II-II in FIG. 1, of an embodiment of the roller support device according to the invention.

#FIGS. 4 and 5 show a lateral view from the plane IV-IV in FIG. 5 and respectively a view in section along the line V-V in FIG. 4 of a variant embodiment according to the invention.

#FIGS. 1 and 2 depict a device supporting a rotating frame for a filtration installation with filtration cells disposed in a carousel. The rotating frame consists of a succession of rails 1 in the form of ring segments arranged one after the other in a circle. These rings formed from rails 1 rest on support rollers 2. In the example embodiment illustrated, the support roller 2 is capable of pivoting about a pivot axis 3. The roller 2 comprises a wheel 3 provided with a steel or cast iron rim 5, for example, which is here covered with a steel tyre 6. It is obviously possible to consider a roller without a tyre or provided with a tyre made from other suitable materials, for example cast iron or an appropriate synthetic material, such as polyurethane. The roller can be used dry or with lubrication.

#The wheel 5 is provided at its centre with a ball bearing 7 that enables it to turn freely on a shaft 8 carried by the arms 9 and 10 of a bearing 11, disposed on each side of the roller. It is obviously possible to also envisage a shaft that turns with the wheel and that is supported by arms of the bearing so as to be able to pivot in these, for example by means of roller bearings.

#At a first end of each of the arms 9 and 10, these are welded to a base plate 12, itself anchored in the ground. At their opposite end, the arms of the bearing have the form of hook open upwards in which the shaft 8 can be housed. The arms in the embodiment illustrated have the general shape of a U on its side, which gives properties of flexibility to each arm.