DD212783A1 - SEAL HEAD FOR PIPING CONNECTION TO A ROTATING ROLLING THREAD - Google Patents

Abstract

The invention relates to a sealing head through which liquid media for cooling or heating a roll or flow. It is an object of the invention to produce the sealing head with relatively little technical-oeconomic effort and to achieve a long service life. The invention has for its object to provide a sealing head in which no leakage occurs and the friction losses are minimized. Geloest the task is characterized in that the bearing bushes are designed as sealing rings and one or both faces of the bearing bushes are flat or spherical designed as a sealing surfaces. The sealing head according to the invention can be used where rotating parts are supplied and removed from the media.

Description

Title of the invention.

Sealing head for the pipe connection to a rotating roll neck

Field of application of the invention

The invention relates to a sealing head for the pipe connection to a rotating roll neck through which liquid media for cooling or heating a roll on or flow.

Characteristic of the known technical solutions

From US-PS 4254 972 a sealing head is known in which sliding bodies are used as radial bearings on the front sides and are each sealed with a circular ring as a secondary seal to the outside. As a primary seal another sealing ring between the two sliding bodies is used. By means of a spring sealing collar is pressed against the sealing surface of the primary seal, thereby achieving the sealing effect. The disadvantage of this seal is that in addition to the two sliders an additional

Sealing ring is necessary. Another disadvantage is the fact that the secondary seals made of rubber or similar materials for sealing the sliding body relative to the housing, especially at high temperatures of the medium have a relatively short life ·

DE-OS 2 918 492 also describes a sealing head which, in addition to the plain bearing bushings, has sealing rings which are pressed against the sealing surface by means of a spring and thus prevent the medium from escaping Bushings are used only as a radial bearing and for the seal here additional sealing rings are necessary.

Object of the invention.

It is the object of the invention to design a sealing head for the pipe connection to a rotating roll neck appropriately so that a relatively low technical-economic effort for the production and maintenance is necessary and a long life of the device is achieved.

Explanation of the essence of the invention

The invention has for its object to provide a sealing head for the pipe connection to a rotating roll neck, in which the inflow and outflow der'flüssigen media for cooling or heating takes place without leakage and minimal friction losses ·

The problem is solved in that the bearing bushes are designed as sealing rings. Another feature of the invention is one or, both faces of the bushings are designed as sealing surfaces plan or spherical. The design of the sealing surfaces is dependent on whether the bearing bushes are fixedly arranged in the housing or fixed on the sleeve parts or movable between the housing and sleeve parts.

^ The effect of the seal is as follows:

The inner sleeve part, in which the outer sleeve part is mounted, is connected to the bearing journal of the roller. The trained as a seal bushings are arranged so that they rest sealingly on the sealing collars and carry the housing. The arranged between the sealing collars Peder presses the sealing collars against the sealing surfaces of the bushings, resulting in the bearing bushes have the puncture, the bearing of the housing and the seal to the outside or to take over between inlet and return chamber, ·>

embodiment

The invention will be explained in more detail below with reference to an embodiment

In the accompanying drawing show:

Pig. 1: the longitudinal section of the sealing head with flat sealing surfaces;

%, '

Pig. 2: the longitudinal section of the sealing head with ku * gel-shaped inner sealing surfaces;

Pig, 3: the longitudinal section of the sealing head with spherical outer sealing surfaces;

Pig, 4: the longitudinal section of the sealing head with ku-. gel-like inner and outer sealing surfaces ·

From Fig. 1 it can be seen that in the housing 6, the bushings 5 are fixed, while the inner Hülcc-üteil 1 and outer sleeve part 2 are rotatably mounted in the bearing bushes 5 · The sealing collars 9 are by means of spring 4 against the flat sealing surfaces 10th pressed the bushings 5 and thus seals the flowing over the pipe closure 7 medium to the outside of the flat sealing surface 10 of the inner sleeve part 1 and between supply and return to the sealing surface 10 of the outer sleeve part 2. The medium flows off via the return pipe 11 and the pipe connection 8.

'Pig. 2 shows that the sealing surfaces 10 are spherical. ,

In Pig «3, the bearing bushes 5 are fixedly arranged on the inner sleeve part 1 and the outer sleeve part 2, while they are rotatably mounted in the housing 6. The sealing surfaces 10 are located between the bearing bushes 5 and the housing 6,

The variant ,, that the bearing beech trees 5 rotatably disposed between the housing 6 and the inner sleeve part 1 and outer sleeve part 2, goes from Pig. 4 forth. The sealing surfaces 10 are located both between sealing collars 9 and bushing 5 and between the housing 6 and bearing bush 5 ·

Claims (2)

invention claim 1 «Sealing head for the pipe connection to a rotating roll neck consisting of a housing with pipe connections for medium inflow and outflow, which is supported by a hollow shaft connected to the roll neck and two arranged on it, acting as a radial bearing bushings and in which the hollow shaft two sealing collars are assigned, which allow a length compensation in the axial direction and are printed by a spring against two sealing rings, characterized in that the bearing bushes (5) are designed as sealing rings · 2, sealing head according to item 1, characterized in that one or both end faces of the bearing bushes (5) as a sealing surfaces (10) are designed plan or spherical. ', For this 2 sheets of drawings