DE8031847U1 - INTERMEDIATE PIECE FOR POWDER SPRAYERS - Google Patents

Description

ZuiachenatQck for powder spray guns

The innovation relates to a spacer for powder guns according to the preamble of claims 1 and

Approaches of the type mentioned are known from DE-PS 16 k6 o27.

Such intermediate pieces serve to forward the operating equipment components from the corresponding openings on the powder injection device to the special dÜBe to be arranged in front of the intermediate piece. The operational components to be passed on are usually the powder carrier flow, the fuel gas and oxygen. (While the powder carrier line usually runs from the device through the adapter to the nozzle and through this itself centrally, so do the other channels

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arranged and designed that either the two gas components mixed in the intermediate piece and the Gemiech through BrenngaagemiechkanSle in the intermediate piece be continued or, in the other case, if the nozzle is a so-called inner smelting nozzle, that the two components can be passed through separately to the nozzle, although in the latter case it is necessary, the dQ sensor-side openings of the transmission channels can be adapted to the different connection leg openings of the nozzle, which can only be achieved by means of a ttlecheel can be done in the direction of the channels.

The same applies in principle to the intermediate piece according to DE-PS 16 k6 o27 only with the difference that there the cross channels for the merging and mixing of the Baakoraponenten must be provided within the intermediate piece.

The necessary gas-tight closure of this can only be attached from the outside on the intermediate piece or in a groove-like manner The transverse channel to be pierced has so far been carried out using an upper throw cover in conjunction with elastic Sealing rings, for the correspondingly dimensioned sealing grooves surrounding the metallic body arranged bind.

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Apart from the fact that such sealing rings are only thermally belae-oar to a limited extent (especially in the case of powder spray burners according to DE-PS 16 1 * 6 o27, back ignitions and high thermal loads must be reckoned with), the closure of the transverse ducts by means of slip-over holes in connection with Such sealing rings represent a considerable production effort, and in addition the sealing function of the rings is not reliably guaranteed, at least over long periods of time, so that gas mixtures can occur, and this is not even desired.

The innovation is accordingly based on the object of providing an intermediate piece of the type mentioned at the beginning to improve the innovation to the effect * that on the one hand absolute building tightness with the exclusion of thermal susceptible sealant and on the other hand the seal can be produced with much less manufacturing effort.

The task is with an adapter of the type mentioned after the innovation by the Detected in the characterizing part of claim 1 solved.

An even simpler and independent solution ■ arises according to the characteristics of the hub application

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With these new and absolutely gas-tight designs, the arrangement of circumferential grooves for receiving the sealing rings is advantageous and these become dispensable themselves.

In the case of the first solution, only zuel sleeves bzu. Cover shells above the side openings to position and solder the transverse ducts

In the second solution, bind simply insert plugs into the transverse channels created in the form of bores and solder them.

The novel intermediate piece is based on the following the graphic representation of exemplary examples explained in more detail, with the intermediate piece in particular with regard to its buBeren form shown in simplified form and, for example, for connecting a internal DQae is used.

Show it

1 shows a longitudinal section through the intermediate piece; FIG. 2 shows a cross section along line H-II in FIG. 1; FIG. FIG. 3 shows a cross section along the line IH-III in FIG. I; FIG.

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FIG. K shows a cross section in the sense of FIG. 2, or in a different embodiment; FIG.

5 shows a cross section in the sense of FIG. 3, but in a different embodiment;

6 shows the intermediate piece with cover loops in a perspective arm;

7 shows a special embodiment in section and

6 shows, in section, a special embodiment of the gerBtassitigen cover sleeve.

The intermediate piece 7 can be seen in FIG. 1 in the form of a metallic body 6 between the only indicated connection head 13 and the device the nozzle, also only indicated by dashed lines, which in the example is a Internal mixing nozzle acts, i.e. the oxygen supplied through the Hangle 11, 11 * and the through the KanBle la, la * supplied fuel gas are only approximately in the front third of the DQne 12 merged and mixed.

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The supply line Io for the fuel gas and the supply line 11 for the oxygen at the end of the barn dee The intermediate pieces usually lie on a common circle, while the mouths of the

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Conductor ducts Ια ¹ , II ¹ in consideration of the connecting ducts of the Düae 12 must open into ring ducts la ",, lo ⁿⁱ with different diameters * To achieve this, cross-connections must be made between the ducts la, la ¹ and the ducts 11, II ¹ are produced, wbb takes place through externally attached or incised transverse channels 1, 2, while care must be taken that these transverse channels 1, 2 are sealed gas-tight to one another and to the outside.

In contrast to the previous solution described, this is done according to the exemplary embodiment according to FIGS. 1-3 by two pushed-on cover sleeves 3, which are sealed gas-tight along their edges 5 with the metal body 6 of the intermediate piece 7, and are carried out on the beaten by LBtnhhte. Since the transverse channels 1, 2, as can be seen from FIGS. 2, 3, cover almost the entire cross-section of the intermediate piece with the exception of remaining material webs Ik for the penetration of the other channels, several channels Id ¹ , II ¹ could be evenly distributed over the circumference arranged and led to the ring channels lo ", lo" ^f .

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In the case of the embodiment according to Fig. 4, 5 the transverse channels 1,2 are simply created in the form of bores 1 \ 2 'with jeuieiles of a further, sweeter gradation in which a metallic plug β is then inserted for closure and this in the area its exposed head surface is soldered gas-tight. The bores I ¹ , 2 could of course also be created as Geuindebore Bn, screw in a grub screw and similarly close it in a gas-tight manner.

In particular if the transverse channels 1,2 only ex. Are arc-shaped (see dashed line 15 in FIG. 2), it is not absolutely necessary to arrange cover sleeves 3, but rather small cover shells k (see FIG. 6), which are also soldered along the edges 5, are sufficient.

If the connection of the ZuischenetQckeB 7 to the adviser (all connection and holding elements, uie union sleeves od. The like. Are not shown) a protruding arrangement of sleeves 3 or shells k , can of course in the sense of FIG wide annular groove 16 are cut into the metallic body 6 ,

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then insert the split sleeves 3 into the aich or the shells if flush with the outside. The width of the annular groove 16 is to be dimensioned in such a way that there is still enough space for the LBtnShte, which are also to be held flush. In the case of the arrangement of shells U, of course , the groove 16 would not have to be completely circumferential, although the arrangement of a circumferential annular groove 16 should be preferred for manufacturing reasons (simple turning).

Since the sleeves 1.2 relatively thin wall thickness and through the separation is given a geuisse spring property, the sleeves can be pushed over the intermediate piece and snap into the annular groove 16.

The annular groove 16 can, however, if this is permitted by the other structural relationships, taper openly towards one or the other end of the intermediate piece 7 (strictly speaking, there is then no annular groove but an outer gradation of the metallic one KBrpere 6 above), so that the sleeves closed in calibration can then be pushed onto the sub-step.

If necessary, the device-side HQIbb 3 could even be provided with an annular flange 3 ¹ , which can then simultaneously serve as a retaining flange for an upper sleeve that can be screwed onto the device head 13, which advantageously means that the intermediate piece 7 no longer has to be twisted off with a correspondingly thick layer in order to form a retaining flange.

Claims (6)

• · · · Ι - 1 - (U 1ο5) Caatolin S.A. CH- lool Lausanne protection claims: 1. Intermediate piece for powder spraying devices for forwarding the operating components from the spraying device to the nozzle arranged on it, consisting of a metallic body with a central powder carrier gas channel and combustion and oxygen channels, which are routed to an externally covered cross channel and van dieeen cross channels from the nozzle attachment end , characterized in that the transverse channels (1,2) bzui by Jeueils a cover sleeve (3). Cover shell (Ό closed and the sleeves (3) and cover shells (4) length of their edges (5) with the metallic body (6) of the intermediate piece (7) are closed gas-tight. Z. ZuiischenatQck for powder sprayers for forwarding the 3eJ, ebBmittelkompanenten from the spraying device to this arranged nozzle, consisting bub a metallic body with a central powder carrier gas channel and fuel and oxygen channels, which are reddened on the side up to one from the outside covered cross-channel and from these cross-channels to the Düaenanechlußende Bind, characterized in that the QuerkanSle (1,2) as bores (1 ', 2') formed and a plug (B) arranged in the respective outer end and the accessible The end of the stopper with the metallic body (6) of the intermediate piece (7) is sealed gas-tight. 3. Intermediate piece according to claim 1, characterized characterized in that in the area of the transverse ducts (1,2) on the outside of the intermediate piece (7) one the sleeves (3) bzui. the shells (Ό flush receiving groove (16) is arranged. III! I. 4. Intermediate piece according to claim 1 and / or 3, characterized in that that the covering shell (3) arranged on the tanning side is provided with an annular flange (3 ¹ ). 5. Intermediate piece according to claim 2, characterized in that the bores (I ¹ , 2 ') are provided with a stepped plug receptacle (8 ·). 6. Intermediate piece according to claim 2, characterized in that the bores Cl ', 2 ¹ ) ale Geuiindbohrungen and the plugs (8) aind all grub screws. • ti t