DE9010492U1 - Wear-resistant coating - Google Patents

Description

The invention relates to a wear-resistant coating, in particular a ceramic coating.

The subject of the invention is also a process for producing an abrasive wear-resistant and impact wear-resistant coating, inebosomial ceramics.-.-

&iacgr;&ogr;

J The invention is based on the use of a wear-resistant

Be-Iscfss of the c-ix=.·. »""jegtoenen kind.

The measure according to the &Egr;&igr; rindung _t particularly suitable for

the lining of mixer floors with prefabricated 15

segmented elements which are covered by the manufacturer with a wear protection lining, in particular aluminium oxide plates.

Mixer linings made of wear-resistant cast iron are well known.

20

or iron outer materials, which are rigidly screwed to the mixer base with through-bolts.

Mixer linings with mineral or other materials are also known: Here, individual molded pieces are laid on the mixer floor in cement mortar or other suitable adhesives.

With regard to cast and cast iron materials, it is known that disadvantages arise during installation, since an accurate

30

Align to the lower edge of the mixing elements very

difficult, if not excluded.

The products directly incorporated into the mortar layer or adhesive can only be installed by specialist companies. It is practically impossible for operators such as mixer plant operators to install or remove materials that are so difficult to handle themselves.

On the other hand, for various mixing processes, the exact maintenance of the distances between the mixing element and the upper edge of the wear layer is very important.

The invention is based on the task of making the assembly of a mixer bottom lining with highly wear-resistant materials such as ceramic materials more precise using simple means.

without the special personnel of the 15

Lining companies would be required and at the same time an exact allocation of the floor lining to the mixing devices according to the physical requirements during the mixing process.

The above-mentioned task is solved in accordance with the invention with a wear-resistant coating, in particular a ceramic coating, in that it consists of pre-finished, seamed elements, each of which is applied to segmented sheets, in particular wear protection plates made of a ferrous material, at

Mixer linings, especially made of aluminium oxide, are glued.

According to the invention, a method for producing

an abrasive and impact wear-resistant coating, 30

in particular ceramic covering is carried out by positioning or inserting the ceramic coverings glued to the section sheet at an exact height using spacer screws on a base structure to be lined, in particular a mixer base sheet, and then

via an inlet opening, preferably one per section of mortar.

The wear-resistant coating according to the invention is advantageous for lining mixer floors

The measure according to the invention makes it possible to

To carry out the assembly of a mixer booth lining precisely using simple means, i.e. to adapt the position of the floor lining to the mixing elements to the physical requirements of the mixing process.

By choosing the segment lining with pre-bonded wear protection plates, where the bolt is freely movable to a certain degree, an exact fit into the hole pattern of the basic construction can be achieved on the one hand, and a

Height adjustment and precise alignment of the 15

Mixer segments are to be added to the mixer orchards.

The measure of the invention also applies to segment linings with metallic or other

Wear protection materials. 20

Pre-bonding of the wear protection moldings (usually in the form of plates) to the base plate of the segment can be carried out using a plastic putty with a defined elasticity.

The segments are screwed into the base structure using the threaded bolts on the back, which can either be moved to a limited extent or are rigid, and are adjusted to a limited extent. A filling hole in each segment

The segments are then fully backfilled using a suitable flowable, plastic-modified mortar that sets quickly, which means that they can be put into operation very quickly after relining.

To apply the flowable mortar, one or more wear-resistant fittings are used according to the segment size.

not glued on at the factory and by opening the

It can also be used after
another embodiment can be pressed in.

In general, however, the filling of the mortar is carried out

via a filling funnel: After the full pouring I a filling pellet is filled in the funnel approx. 15 cm above the J lining to create an aedodetic pressure on dip ;

still flowable mortar mass in order to achieve a rich
10

To ensure filling.

After hardening, the filling funnels can be dismantled and the missing molded parts in this area can be filled with

a special fast-setting plastic mortar
15

be glued in.

In mixers with a round bottom, the
Bottom lining depending on the size of the mixer as seam of

30°, 60° or 90°. The floor lining of almost all

known mixer can be carried out using this method

become.

The lining thickness can vary within considerable limits

and can meet the requirements of the products to be mixed

Throughputs and materials can be adapted. The lining

or covering the seam surface with aluminium oxide fittings is generally carried out with fittings of a
Thickness of 12 mm or 17 mm. If required, thinner

or thicker linings. adapted to the &idiagr;

"^; J

Mixed construction or the mixing process, possible. .&idiagr;

j By the measure of the invention, plates or fittings <

made of ceramic coating on steel sheets with back |

Threaded bolts to be glued into the mixer base

I

located holes are screwed in, the &xgr;

fi the above-mentioned task not only in the mixer production, |

but also subsequently fully fulfilled: The existing

Drilling patterns for accommodating wear elements can be used: A quick assembly of individual segments, even with ceramic wear protection, is

possible.
5

The method according to the invention makes it possible to align the segments precisely on the mixer base without the usual bonding, only by subsequent gluing.

The height adjustment can be achieved by means of precisely defined elastic discs around the rear threaded bolt: these elastic discs also allow upward adjustment due to their spring force.

For example, the shell slide of a pan mixer can preferably be protected at the circular contact line by wear-resistant steel edges.

By using only one rectangular basic format with

With a length to width ratio of 1:2tan15°, a comprehensive wear protection lining with this basic format is provided, so that only diagonal cuts or shortenings on the periphery of the segments are necessary. Du-approaching joints in the conveying direction of the

Mixing tools are not available.

By adjusting the leveling layer and the replaceable segment, the technically desired distance between wear protection and mixing tool is set,

or.ne complex construction and without changes to the mixer.

The fastening holes can also be placed per seam on radial lines (radii) starting from the center of the mixer bottom at a certain distance from the

circumferential radial lines.

Examples of embodiments of the invention will now be explained in more detail with reference to the accompanying drawings. These are shown in:

Fig. 1 a 30° seam.;

Fig. 2 shows the fastening of a mixer segment

Type, and
Fig. 3 a ß'nstiauno with rigid bolts.

A sequence for a larger mixer bottom 10 is shown in Fig.

It is shown that this is a 30° segment. Segments with a multiple of 30 ^° are possible. The seam is covered with wear protection plates 12, in the present case made of (pre-bonded). The segment

The fixings are arranged according to the drilling pattern of the basic construction (mixer plate) and in the example along two radii or radial lines 18, which are parallel to the circumferential radial boundaries under

distance. The segmental fastenings themselves are 20

qenürer with reference to Figs. 2 and 3.

Approximately in the center of gravity of the segment an entry opening 16 for the grouting mortar is provided. The shape of the

Circle segment depends on the shape of the mixer. In 25

Fig. 2 shows a loose fastening of the threaded bolt (countersunk screw 22) to the seam. ^Chemically represented Al^Oß ceramic plates 12 are pre-bonded via a laminate layer 20 to the sheet metal 11 and

thus form the sequence 10 shown in Fig. 1. The 30

The segment fastening 14 of Fig. 1 is implemented as follows. The countersunk screw 22 is caught with its head in a disk 24 with an opening complementary to the shape of the head 23. The disk 24 is in turn

thereby käfiqartiq qehalte that a 35

Disc 26 at 32 each with the segment plate 11 welded to the front. The discs sit in a cavity 20. Around the threaded bolt 22, both

the disc 26 (countersink opening) as well as the elastic discs 28 (circular opening) underneath as well as the

Diameter of the hole in the mixer plate a 5

considerable distance or free space.

The elastic discs 28 (elastomer material, for example) are clamped with an upper thickness; between the discs 24 and 26

there is a distance X ^1. A hexagon nut 34 with 10

The clamping part is tightened to the bolt in the mentioned construction via a washer. This creates a

Possibility of adjustment in height and on the "pendulum" 15

The mounted screw has a displacement possibility of about 7 mm in both axes.

A cheaper option for mixer seam fastening can be seen in Fig. 3. The same elements are connected with the same

reference symbols.

If the recess 20 in the segment plate is still required in Fig. 2, the segment plate 41 is continuous.

the segment sheet, the ceramic plates 12 are again above the 25

The threaded bolt 42 is welded at 43 to the back of the seam sheet at positions 14 (Fig. 1) and is fastened to the mixer round sheet 30 via a washer with the hexagon nut with clamping part 44. The elastic washers 28 are also

thicker than the distance between the mixer base plate 30 and the seam plate 41. Both the elastic disks 28 and the mixer round plate have such large recesses that the segment plate 41 and with it the threaded bolt 42 are not prevented from moving. The possibility of adjusting the height is provided by the construction of Fig. 3.

In both embodiments, after the final adjustment of the segments 10, the inlet openings 16 are

The grout is filled in as described above. 5

The measure according to the invention provides a mineral/ceramic wear protection in such a way that the secant can be easily installed (in situ) by the end user's own locksmith via a screw connection. It is therefore no longer necessary for the specialist company to install the plates or shaped pieces in mortar at the installation site. The disadvantages compared to simply screwed steel or

Cast segments are eliminated. 15

The mineral/ceramic wear protection can be installed surprisingly quickly and easily as was the case with the previous steel or cast materials. There is no need for fastening the

Segments on every screw connection that goes through to the surface of the covering. There are therefore no disturbing, usually less wear-resistant points at the fastening points. A significant simplification is

the sliding fastening. 25

Even though it is known to cover metal sheets with ceramic using a suitable adhesive, the performance of applying a ceramic coating to a special segmented metal sheet for the wear-resistant lining of mixer floors is

to apply a Sen.nent sheet, extremely inexpensive.

Claims (1)

-1- ANS PROCHE 1- Wear-resistant coating, in particular ceramic coating, characterized in that it consists of prefabricated segmented elements, each of which is glued to segmented sheets, in particular wear protection plates made of a ferrous material, for mixer linings, in particular made of aluminum oxide. 2- βελλ ag according to claim ~. thereby marked by the aluminum oxide mats being laid in an elastic, plastic-based putty on each segment. 3. Covering according to one of the preceding claims, characterized in that the carrier segment plates have threaded bolts on the back for Screwing with the possibility of sliding against the surface to be protected, in particular the bottom of a mixer. r, 25 4. Covering according to claim 3, characterized characterized in that the threaded bolt in tj a rear perforated disc sits above a for this purpose concentric aeaen the support plate welded Disc is captive content-3n, with a free space around the bolt. ['■ 5. Belaa according to claim 3 or 4, characterized Characterized in that the disc holding the movable disc allows a certain displacement of the seams in the vertical direction on elastic allowing. Discs that rest on the base body. 6. Covering according to claim 3, 4 or 5, characterized in that due to the assignment of rigid/elastic disc, the segment in limited Circumference heights are adjustable. 5 7. Covering according to claim S ₇ 4*«?·, ch characterized in that, with a precisely known drilling pattern, the threaded bolt is firmly attached to the back of the Segment plate is attached and a nut with 10 The clamping part can be tightened against a disk on the back of the structure to be lined, whereby the elastic disks and the base structure leave space around the bolt. 8. Covering according to claim 7, characterized characterized in that the segments of the wear-resistant insert are replaceable. 9. Covering according to one of the preceding claims, characterized Characterized in that an elastic, plastic-based cement is provided for bonding the ceramic to the segment sheet. 10. Belaa according to one of the preceding claims, characterized Characterized in that only a rectangular base profile with a length to width ratio of ]: 2tan15°, which enables a comprehensive wear protection, is provided for the covering of the individual segments. il. Covering according to claim 8, characterized in that the feet do not pass through in the radial or conveying direction of the hive.