CS273464B1 - Plate for oil filtering insert - Google Patents

Abstract

The solution concerns an oil treatment plant machine assembly with high output. The plate consists of a support body, on which there are two layers of filter fabric with at least one further replaceable layer of another filter material.<IMAGE>

Description

The present invention relates to an oil filter cartridge comprising a support body and a filter fabric.

Lubricating oil filters are used to remove mechanical impurities and, in the case of higher filtration capabilities, can also remove oil aging products. A variety of filter designs are known. Typically, filters based on metal sieves are obtained in which a filtering ability of up to about 40 µ is achieved, as well as filters based on suitably shaped fabrics, filters based on filter papers and the like. In the best embodiments, a filtration capability of up to 0.5 µl can be achieved. For high power sets, such as turbocompressor sets, the best degree of filtration is desirable. However, with increasing filtering capacity, the filter dimensions increase disproportionately. All known filter cartridges are fundamentally designed for one filtration quality step, which always requires a new cleaning cartridge arrangement and a new filter container.

Said drawbacks are overcome by an oil filter cartridge consisting of a sheet metal body and a filter fabric according to the invention. It is based on the fact that two layers of filter fabric are firmly attached to the support body on which at least one replaceable layer of filter material is placed.

The basic advantage of the invention lies in the possibility of removing and replacing the third and each additional layer in a simple manner from the plate, which is necessary for clogging with higher filtration capabilities. The actual filtering ability of individual layers is gradually increased by a geometric series. Further advantages of the invention lie in the possibility of application on existing filter containers and in devices already in operation, in simple disassembly and assembly of filter cartridges, without the need for a large space above the filters and without the use of a lifting device.

The invention will now be described in more detail by way of example and with reference to the drawing in which: FIG. 1 is a cross-sectional side view of the plate; FIG. 2 is a partial cross-sectional plan view of FIG.

It can be seen from Fig. 1 that the oil filter cartridge plate comprises a support body on which two fixed layers of filter fabric 2 are fixed by means of flanges.

According to another solution, the annulus of the filter fabric 2 can be applied to the support body 1 from both sides and soldered on the circumference. This solution is less advantageous because it requires soldering at the filter user when changing the filter fabric.

According to a further alternative solution, the two annular filter cloths 2 are pre-brazed in the factory to one half of the circumference so that the filter support body 1 can be inserted into the housing thus produced. The remaining solder part is clamped between two metal segments and screwed. This solution requires soldering of the filter cloth 2 but only at the manufacturing plant which is responsible for the quality of the joint.

Claims (1)

SUBJECT OF THE INVENTION An oil filter cartridge comprising a support body and a filter fabric, characterized in that two layers of filter fabric (2) are mounted on the support body (1) on which at least one replaceable layer of further filter material (4) is disposed.