DE2500098A1 - MECHANICAL RING, IN PARTICULAR COUNTER RING FOR MECHANICAL SEALS - Google Patents

Description

GOET ZEWERKE Burscheid, d. 12/12/1974

Friedrich Goetze AG ZBT 329 / We / Mon. (1527)

Slide ring, in particular counter ring for mechanical seals

The invention relates to a sliding ring, in particular a counter ring for mechanical seals, which, via an intermediate layer with a high degree of adhesion, is non-rotatable and tight with the one assigned to it Machine part is connectable.

For non-rotatable and at the same time tight mounting of sliding and mating rings of mechanical seals opposite the rings receiving them Machine parts, e.g. machine housings or shafts, are predominantly made of elastically flexible intermediate layers made of rubber in the form of washers or O-rings. As a result of the sliding or counter ring on the rubber intermediate layers acting, axial sealing force is the sliding ring or counter ring against rotation via the adhesion of the rubber material secured and at the same time a static seal between the sliding ring or counter ring and the associated machine part is achieved.

In particular in the case of such designs where the counterpart

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Side / - sliding ring, especially counter ring for mechanical seals (1527)

ring of a mechanical seal with this to an installation unit for Transport, storage and assembly is combined, the problem arises of a simplified, easier to assemble Design of an anti-twist device and static seal, in particular between the counter ring and the associated machine part. The invention is therefore based on the object of improving the production and application of an intermediate layer that To increase the adhesion of the intermediate layer and to facilitate the assembly of the mechanical seal unit.

This object is achieved in that the The intermediate layer consists of a double-sided adhesive film. The adhesive film is preferably on the opposite side from the sliding surface applied rear face of the sliding or counter ring. For storage and transport of the mechanical seal unit it is advantageous if the surface of the adhesive film, which is initially still free, is provided with a removable protective film is covered against pollution. This protective film can be removed immediately before the assembly of the sealing unit easily remove.

The present invention not only enables a particularly simple and inexpensive production and application of an intermediate layer, but also improves their function, since after the axial pressing of the sliding ring or counter ring against the assigned Machine part one of the axial sealing force completely

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Side / - slide ring, especially counter ring for mechanical seals (1527)

independent non-rotatable and tight connection is made, the Despite the high adhesive strength in the event of repairs, i.e. when the entire sealing unit needs to be replaced, it is easily detachable in contrast to normal adhesive connections.

An embodiment of the invention is shown in the drawing.

The partial section of a cooling water pump shows the pump housing 1, the rotating shaft 2 and an impeller firmly connected to the shaft end 3. To seal the gap 4 between Pump housing 1 and shaft 2 is a mechanical seal unit 5, which consists of a seal housing 6, one axially of a Spring 7 is pressed against the counter ring 8 and statically sealed by means of a rubber bellows 9 sliding ring Io. For non-rotatable and tight connection of the mating ring 8 with the impeller 3 is an intermediate layer consisting of a double-sided adhesive film 11. Due to their adhesion to the impeller 3 and mating ring 8, this rotates with the rotation of the shaft 2, while the actual mechanical seal 5 with the pump housing 1 remains.

The mechanical seal unit is already provided with a Equipped counter ring 8, which is secured by a retaining collar 12 against axial sliding out of the seal housing 6 and on its end face axially opposite the sliding surface 13

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Page f - Mechanical seal, especially counter ring for mechanical seals (1527)

term back surface 14 covered with a double-sided adhesive film 11 is. After mounting the mechanical seal 5 in the pump housing 1, the protective film, not shown, is on the Impeller 3 facing free surface of the adhesive film 11 removed and the impeller 3 pushed onto the shaft end and connected. The counter-ring is thereby created by the counter-pressure of the spring 7 with its adhesive back surface 14 pressed against the face 15 of the impeller 3 in a rotationally fixed and tight manner.

Claims (3)

GOET ZEWERKE Burscheid, d. 12/12/1974 Friedrich Goetze AG ZBT 329 / We / Mon. (1527) PATENT CLAIMS Slide ring, in particular counter ring for mechanical seals, which has an intermediate layer with high adhesive strength Can be connected non-rotatably and tightly to the associated machine part, characterized in that the intermediate layer consists of a double-sided adhesive film (11). 2.) Sliding ring according to claim 1, characterized in that that the adhesive film (11) is applied to the back surface (14) of the sliding or counter ring (8). 3.) Sliding ring according to claims 1 and 2, characterized in that that for storage and transport the free surface of the adhesive film by means of a peelable Protective film is covered. 3 0 j ■; ■ ü 4 2 1 Blank page