DE2642173C2 - Method and device for treating elements passing through a chamber by means of gases - Google Patents

Description

The invention relates to a method according to the preamble of patent claim 1 and to a device for carrying out the method.

The object of the invention is to provide a homogeneous and effective treatment of a chamber passing through Elements while reducing the dimensions of this chamber, especially in the direction of movement of the elements to enable.

This object is achieved according to the invention by what is contained in the characterizing part of claim 1 Features solved.

According to the method of the invention, the elements to be treated are given a translational and a rotational movement at the same time:
The elements traverse the length of the chamber several times at different levels; these elements are allowed to roll on planar surfaces arranged one above the other and extending transversely across the chamber, and they are brought into contact with organs which, even with continuous translational movement, are angetric-

b5 ben are, the same organs successively passing the elements in one direction, then in the other at two different levels.

The elements treated by this process are generally cylindrical, spherical in shape or egg-shaped and are driven with a rotational movement about their axis or about their center.

The method according to the invention can be applied to a wide variety of treatment processes such as for example drying, curing, cooling, heating, for processes such as tempering, relaxing or similar. It can also be applied to that Covering surface of elements by means of fabrics such as coatings, paints, etc. whose composition can be heterogeneous and the ingredients of which are effectively mixed due to the motions imparted to these elements. That Process can also be used to make semi-rigid, flexible or peelable elements to be treated Provide cover layers or coatings.

The elements treated may be tubular in shape, particularly cylindrical tubular shape Be shape. Above all, they can consist of fibrous products and, in particular, fibrous insulating ones Be shell bodies in which a binding agent is distributed between the fibers, the one in the chamber contained gases for thermal treatment take care of the entire thickness of the products, allowing polymerization or hardening of the binder will. These elements can for example by insulating fibrous shell body, in particular be formed from a small diameter, as described for example in DE-OS 25 20 462 smd. Then they consist of a felt in which a binding agent is distributed, this shell body being a Have a permeable structure and have hardened and smooth inner and outer surfaces.

The invention also relates to a device for performing this method, the device is formed by a chamber with at least two perforated floors arranged one above the other or plates on which the elements to be treated roll and at least one endless chain being provided is, which is driven in translatory motion and is firmly connected to organs with which the elements to be treated come into contact, the upper strand of this endless chain being used for movement of these elements in a direction above the level of a perforated floor while you lower run for their displacement in the other direction above the other perforated floor ensures the transition of the elements to be treated from one strand to the other due to gravity going on.

Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. In it shows

F i g. 1 is a partially sectioned view of the chamber;

F i g. Figure 2 is a detailed view showing the device for driving and rotating the elements in the chamber shows;

F i g. 3 shows a longitudinal section on a larger scale through the feed device of the chamber of FIG. 1 and

F i g. 4 and 5 partial longitudinal sections through two embodiments of the drive device to be treated Elements.

The elements described include fibrous insulating shell bodies A, which consist of a felt in which a binding agent is distributed (cf. also DE-OS 25 20 462). This device is intended for the complete and uniform hardening of the shell bodies, with polymerization or hardening of the binder being ensured.

During the curing in the chamber or in the heating furnace or continuous furnace which Schalenkörpe be ^r without applying force to move, such that a delamination of the outer layers and the formation of surface defects, which are detrimental to the appearance, it is avoided the other hand, during the

ίο The dwell time in the heating furnace is kept completely flat over its length and rotates completely around its axis in such a way that the hardening is evened out.
The shell bodies A are guided one after the other in front of a gate ϊ operated by a winch 2, whereby each shell body is stopped before it enters. The opening of this gate is timed and limited in order to reduce heat loss in the furnace. -_

In order to lengthen the dwell time of the shell bodies in the heating furnace and at the same time to limit its length, the continuous furnace comprises several superimposed levels, five in the example shown.
Each of these levels consists of a perforated floor 3 of one or more parts on which the shell bodies A roll by being driven by means of rods 4 which are driven with a continuous translational movement. For this purpose, chains such as 5 are firmly connected to the bars. The arrangement is such that one of these endless chains 5 with its upper run provides for the displacement in one direction, then in the other direction by means of its lower run on two successive levels of perforated floors 3.

According to the example considered, three chains 5 with bars 4 are provided, five on top of one another Levels to get. The chains are driven by a continuously variable transmission with a chain driven, which is in engagement with the sprockets 6.

The shell bodies A are placed on the perforated floors 3 between two successive rods 4. The movement of the endless chain 5 ensures the advancement of the rods 4. Each of the shell bodies A is pushed through the rod immediately in front of it and is presented by rolling on the carrier plate 3. Between the end 9 of the perforated floor under consideration and the last rod in front of the chain wheel 6, a free space 7 is provided in such a way that a shell body A passes to the lower level due to gravity.

At this level, the rods 4 circulate in an opposite direction and are then through driven the return strand of the endless chain. It follows that the shell body under the same conditions are driven at a horizontal transfer level in a direction opposite to that driven, which they experience at the level immediately above. The shell bodies eventually leave that lower level 8 by rolling on an inclined plane 10.

The continuous furnace is heated by means of gas burners 12, which are located on the floor 13 of the continuous furnace? are arranged and above which small vaulted stones 14 made of stainless metal are arranged, to avoid localized overheating of the lower level of the continuous furnace or heating cabinet. The homogeneous distribution of the rising warm air

over the entire height of the continuous furnace is obtained by using a thin perforated sheet 15, that is arranged parallel to the upper region of the arched stones 14 and at a certain distance from the latter is.

After passing through in contact with all of these shell bodies, the air is over the chimney 16 deducted.

The example described and shown relates to the case in which the floors 3 carrying the elements A to be treated are arranged horizontally.

According to the embodiments according to FIG. 4 and 5 are these floors or plates against the horizontal inclined.

The inclination of the floor 3 is corresponding to FIG. 4 - seen in the direction of movement of the elements A - increasing; the rods 4, which touch these elements, then ensure that they are driven.

Such an embodiment enables regular rotation of the elements even if the rotational shape of these elements is imperfect.

According to the embodiment of FIG. 5, the inclination of the base 3 is directed downwards, as seen in the direction of movement of the elements A. These are carried along by gravity and the rods 4 ensure that their movement is regulated in this case. In addition to the advantage mentioned above with reference to FIG. 4, such an arrangement of the bottom 3 favors the discharge of the material particles which may have become detached from the elements A during their passage in the treatment chamber.

For this purpose 3 sheets of drawings

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Claims (14)

Patent claims: 1. A method for treating elements in a chamber by means of gases flowing through this chamber, these elements simultaneously with a translational and a rotational movement, characterized in that the elements are several times the length of the Cycle through chamber at different levels and that these elements are caused to roll on planar surfaces lying one on top of the other, the extend across the chamber by bringing them into contact with organs that are themselves with translational continuous movement are driven, the same organs successively for the passage of the elements in one Direction, then care in the other on two different levels. 2. The method according to claim 1, characterized in that the chamber is flowed through by hot gases. 3. The method according to any one of claims 1 to 2, characterized in that the treated products of tubular shape, in particular of are cylindrical tubular shape. 4. The method according to any one of claims 1 to 3, characterized in that the treated products are fibrous products, in particular insulating are fibrous shell bodies in which a binder is distributed between the fibers, the in the Chamber contained gases for a thermal treatment over the thickness of the products and in particular ensure the polymerization or hardening of the binder. 5. Device for performing the method according to one of claims 1 to 4, characterized in that the chamber has at least two perforated floors or plates arranged one above the other, on which the elements to be treated roll and has at least one endless chain which is driven with a translational movement and is firmly connected to organs with which the elements to be treated are in contact, the upper run of this endless chain ensuring the movement of the elements in one direction above the level of a perforated floor , while its lower run ensures their movement in the other direction above the level of the other perforated floor, and the transition of the elements to be treated from one run to the other takes place by means of gravity. 6. Apparatus according to claim 5, characterized in that the organs with which the to be treated Elements are in contact, formed by rods, these elements on the plate are deposited between two consecutive bars. 7. Apparatus according to claim 5 and 6, characterized in that between the end of each perforated Floor and the last rod in front of the arranged at the end of each endless chain drive sprocket provided a free space with dimensions is sufficient to allow the elements to be treated to pass. 8. Device according to one of claims 5 to 7, characterized by a plurality of identical endless chains which successively drive the elements to be treated, the transition of the latter from one endless chain to the next being due to gravity 3. Apparatus according to claim 8, characterized by a single drive element for actuating the Endless chain arrangement. 10. The device according to claim!), Characterized in that this drive member is a stepped Los controllable gearbox with drive is which drives the chains via a chain that is in engagement with the drive sprockets of the endless chains. 11. Device according to one of claims 5 to 10, characterized in that a stop or one door for a short period of time each Element stops before its insertion into the chamber in order to bring it into a favorable position relative to the Drive organs to lead. 12. Device according to one of claims 5 to 11, characterized in that the heating of the Chamber takes place by means of gas burners, which are arranged on the Kammerbodcn and over which deflection devices are provided. 13. Device according to one of claims 5 to 12. characterized in that the floors or Plates are arranged horizontally or have an increasing inclination seen in the direction of movement of the elements to be treated, and that the Organs with which the elements to be treated are in contact are responsible for the propulsion of these elements. 14. Device according to one of claims 5 to 12, characterized in that at least one part of the plates has a downward slope in the direction of movement of the elements to be treated having, these elements being driven by gravity and the organs with which they are in Stay in contact for regulating this movement care for.