DE722934C - Method and device for centrifuging socket pipes made of hydraulic binders and mineral fibers - Google Patents

Description

Method and device for centrifuging socket pipes from hydraulic Binders and Mineral Fibers The present invention addresses the production of socket pipes from a mixture of a hydraulic isohen binder, such as cement, and mineral fibers such as slag wool, glass wool or the like, optionally with the addition of other fillers, such as rock flour, gravel or the like.

It is known to produce hollow bodies from cement this in the plastic state in a rotating centrifugal shape with the help of an in the axial direction advancing screw conveyor o. The like. Introduce with the front outlet, so that the hollow body is built up from a spiral-shaped cement paste. In this way, there is no evenness of the pipe in the internal structure achieve, as is desired to achieve good strength properties. in the In contrast to this, in an older proposal by the inventor, the production of Hollow bodies not made of cement, but of a mixture of a hydraulic binder with mineral fibers in fast rotating centrifugal molds through slow ones Tilting a mix trough extending over the entire length of the centrifugal mold indicated, whereby a pipe structure from a large number of thinner superimposed Layers results in such a way that the segregation no longer appears disadvantageously and so a hollow body with the best strength properties and density is created.

To also be used in the manufacture of socket pipes from hydraulic. Binders and mineral fibers this layered structure and the desired practical uniformity in the structure with the good strength properties and to achieve tightness is in contrast according to the present invention. Ztt known method for the production of socket pipes according to your centrifugal process proposed using a centrifugal mold with one of the socket outer profile of the tube corresponding end part, one protruding into this, on the centrifugal mold easily removable fixed sleeve core with one of the inner surface of the sleeve corresponding surface as well as a tilting trough for introducing the ice cream, the mixed material intended for the formation of the socket is separate from that for the formation of the cylindrical part of the pipe wall certain tilting tray contents before or at the same time finite this from a mixed material container part arranged in the interior of the sleeve core in. to bring the socket cavity.m to the outlet.

It results in this way when the actual tubular body is spun Sleeves that are not only perfect in themselves, but also at the transition to the actual pipe, i.e. at the socket attachment, a flawless solid and dense structure to the desired extent. The sleeves are both inside as on the outside completely smooth and have perfectly adequate strength properties on.

The invention also relates to devices for performing the marked procedure. Appropriately, the form for charging the muff enohlraumes Serving mixed material container with the tipping channel for introducing the -I% Iischgutes for the actual tubular body a continuous container, which may be after the socket end is tapered in cross section. This container can be from the outside be fillable. The operation of the device is simplified in this way, because both the mix for the actual pipe and that for the socket is fed with a single tiltable container. Not to mention the advantages coordinating the tilting speed with respect to the rotational speed offers the centrifugal form, which has already been briefly discussed at the beginning, This results in an extremely favorable structure in the socket and especially at the socket approach as a transition to the actual pipe, so that on in this way socket pipes with favorable strength properties can be produced can.

If necessary, the one used to load the muffen cavity Wed, bulk container part one of the tipping trough for tipping in the mix for the actual tube form closed container. This can be refilled from the outside and after your lluffeileilde zti be tapered in cross-section.

the introduction of the mix for (eti socket cavity from the outside take place here, and expediently so that after the ejection of the sleeve without Interruption then the mix for the actual pipe runs in.

Useful are in the end face of the socket part of the centrifugal mold and / or the bushing in a manner known per se passage openings for the at Centrifugal expelled mixing liquid and the displaced air provided that optionally can be covered finitely with a filter cloth or the like around the passage to partially prevent livdraulic binders or mixed material to the outside.

In the accompanying drawing is an example of an attachment device according to the invention shown in elevation.

It denotes i the centrifugal mold with your outer socket profile of the pipe corresponding end part and 2 the socket core with a surface which corresponds to the desired inner surface of the socket. Wedges are attached to the mold i 3 the sleeve core z held so that it can be easily removed and reinserted leaves. Passage openings .4 are provided on the end face of the air core 2, which are all covered with a filter 3 and through which the Aninachiquid des Mix and the air can escape to the outside. For introducing the mix for the socket cavity is one which extends into the interior of the socket core 3 Container provided, which forms an extension of the tipping trough 6 and this opposite is divided by a web plate 7 arranged approximately at the level of the socket attachment. With the help of means not shown, the entire 'tipping trough is rotated. That for The mix required to produce the socket is poured in from the outside at S and runs out of your slot 9 in the non-running centrifugal form and therefore already before and during the tilting movement of the channel 6, so that the mix for the actual Pipe immediately after filling the joint cavity or even during this Time is emptied into the rotating centrifugal mold.

Claims (1)

PATENT CLAIMS: i. Process for centrifuging socket pipes from a mixture of a livdraulic binder such as cement and mineral fibers such as slag wool, glass wool or the like, possibly with the addition of other fillers such as rock flour, gravel or the like, in which a centrifugal form with one of the Socket outer profile of the pipe and a: in @ d @ ieses: protruding sleeve core easily removable from the centrifugal mold with a surface corresponding to the inner surface of the sleeve, as well as a tilting trough for introducing the mixed material for the pipe are used, dadu.roh marked that the mixed material intended for the formation of the socket separately from the tipping trough intended for: the formation of the cylindrical part of the pipe wall before or at the same time. a. Apparatus for carrying out the method according to Claim r, characterized in that the one used for charging the socket cavity. Mixture container part with the tipping channel forms a continuous container, optionally tapered in cross-section after the socket end, and can be refilled from the socket end. 3. Apparatus for carrying out the method according to claim z, characterized in that the mixing material container part serving for charging the socket cavity forms a container closed off by the tipping trough, optionally tapered in cross-section after the socket end, which can be refilled from the socket end. .. Apparatus for carrying out the method according to claim z, characterized in that openings for the expelled mixing liquid and the displaced air are provided in the end face of the sleeve part of the centrifugal mold and / or the Muffenlkernes, which can optionally be covered with a filter cloth or the like.