SE419676B - PRESSURE OR VACUUM CLEAN - Google Patents

Description

10 15 20 25 50 vsoaaz fi-6 za renderable through blind flanges, for example two. pieces, in the lid, whereby the positions for the inlet and the outlet relative to the environment of the furnace can be exchanged through the lid turning and / or by moving: inlet and / or outlet to of a blind flange defined position. The inlet can be placed anywhere in relation to the outlet when only the inlet is piped according to the main requirement. It came- the flat inlet can be easily 'replaced after wear, and no longer stalls need to arise. during melting / keeping warm. In the event of a standstill, for example caused by errors on. a line, stop overnight or weekend or at. Other time, the entire process can be removed and replaced with a flange with a ceramic stopper to spare the pipe.

The hole in the lid can be used for slagging, sampling or inspection, and at only piped inlet only needs to keep the outlet clean by launching, slag grinding, re-lining, and a simpler furnace construction are obtained. Manfär smaller number of points at the furnace, where there is a risk of breakthrough when welding to the furnace jacket obtained.

The position of the inductor no longer plays a role in the lining of the inlet, the lid can exchanged. No damage to the inlet through launching is obtained, and with wear of the pipe this can be easily replaced or repaired. IN In the embodiment with a tubular inlet _o¿h outlet, the mutual position holding locked, but together the inlet and outlet can be turned with the lid or can blind flanges are provided, where the inlet and / or outlet can be moved. In this case further reduces the need for and risk of launch, and the number of weak points further reduced. IN Exchange units for inlet and outlet can be present and kept preheated. Correction of the pipes will only take place at the standstill of the bath (stroke), and this can be completely prevented as above.

The invention is further exemplified in the accompanying Figures 2 and 2A, Figure 1 shows state of the art. Figure 3 shows the attachment of a pipe to the inlet and Figures 4 and 4A show the firing device for the furnace. Figure 5 shows a sealing plug.

Figure 1 shows a "tea-pot" oven of a conventional type with a central hearth 1 and with separate inlets 2 and outlets 5, opening into the hearth 1 below the normal one melting level (not shown). One or more gutter inductors are arranged at the oven 4 (whose appears in the figure). The oven is on. custom designed as tippable pressure tappingugxz. As can be seen in Figure 1, the furnace is relatively 10 15 20 25 7800821 -6 to an extent, and this is accentuated by the position of the inductor 4.

There is a risk of freezing plugs in inlet 2, especially near the ground (at S) and at the top (at 6), but risk is also present in the outlet 5 depending. otill- satisfactory heat transport from the inductor 4. Inlets must often be launched 2 and outlet 5, which entails risks of injury and is labor-intensive. You get several so-called weak plmkter in the construction. The need for re-walling or re-stamping parts of the oven are large, as is the need to slam. Inlet 2 and the location of the outlet 3 is well connected to the position of the inductor.

The invention is illustrated in Figure 2, where in an alternative the conventional inlet 2 with an inlet 7, comprising a replaceable pipe 8, ceramic, and extending through the lid or arch 9 down into the core 10 to a level, below the melting level 11. In this alternative, the outlet consists of ordinary, conventional outlet part 5, and the later described outlet part exists not here.

As can be seen, in this alternative the inlet 7 (Fig. 2A) can be placed anywhere in relation 'to the outlet S by turning the cover 9, possibly placement in center of the lid, changing by turning the inlet on. the flange of the lid.

The inlet 7 with the pipe 8 can easily be replaced with a suitably preheated replacement insert. race.

At standstill, ie when the rudder level is at a standstill and when there is a risk of pipe wear, the inlet 7 can be replaced by a ceramic sealing plug (12) (figure S), provided with a water-cooled (16) seal 13 at sealing plate 14 with sealing compound 15.

The hole in the lid 9 at the removed inlet 7 can be used for slagging (the sealing surface slqrddas thereby by means of a ring with impact chute), which can be done by means of well-known ones rejection means, such as razors or buckets. You just have to keep going. outlet 3 clean and the number of weak points becomes smaller. The position of the inductor 4 plays less here role. Inspection can also take place through the just mentioned holes. Tube 8 can be easily repaired or replaced after wear.

The inlet 7 must be pressure-tight and vacuum-tight connected to the lid 9. The oven through compressed air or compressed gas, see at 17 in Figure 2A.

The pipe 8 at the inlet can be fastened interchangeably according to figure 5. Arrangement is made around the pipe 8 a guide plug 18, and between the guide plug 18 and the tube 8 a non-integral edge joint compound 19 (see Fig. 5). The function of the guide plug 18 is to widen the 8 diameters of the tube. 10 15 20 25 50 35 Töß fi öâi m6 meters in the hole so that the pipe 8 can be removed even if slag were stuck around tube 8 below the guide plug. In the axial direction, between the guide garments and a plate 20 a ceramic felt 21 is arranged, and between this plate 20 and another plate 22 another seal 25 is arranged between the plate 2G and the pipe flange 8A. mass 24, and around the flange 8A a sealing plate 25 is arranged. The joint is cooled with cooling. water in cooling water channels 26. _ _ The tube 8 can consist of a ceramic tube or be made of extruded material.

As can be seen, the joint of the tube 8 at the lid 9 (Fig. 5) is releasable, and the tube can be easily removed replaced or repaired or replaced with a sealing plug 12 (Figure 5) at downtime.

Figures 4: and 4A show a masugzx switch 27 for emergency emptying and emptying down to one. some swamp of the oven (see also figure 2). Figure 4A shows two. emptying openings, a (or more) lower 28 for total and emergency emptying, an upper 50 for emptying ma: in amma. (Location, see figure 2.) Figure 4 shows the wav racism of ae gaff plugs 29, which are intended to close. these two. emptying opening r (28, 50). Maneuvering the hydration takes place via a hydranloylinder 51, via a link mechanism 52 connected to the graphite stopper 29. In the closed position, the stopper 29 should seal against a molding 55, and as shown in Figure 4A, donors were also used for the two. the openings 28, '50. En gutter 55 'leads to a spigot 54. The sump level is shown at 55 and the total emptying the profile of the udder body is shown in Figure 4A at 57.

In a second embodiment, the outlet 58 is also provided with a pipe 59, projecting through the vault 9 in the melt. The arrangement of the outlet 58-59 may be similar, applied at the inlet and shown in Figure 5. In this case, the also stop the previous outlet 5 and the number of weak. points become even smaller.

Unloading becomes completely unnecessary here and slagging and inspection / sampling can take place through the hole for the inlet 7 or the hole for the outlet 58 at removed pipes (8, 59).

The tap hole in the outlet is shown at 40. ' The positional relationship between inlet I and outlet 58 is also shown here mutually fixed, and can be varied relative to the oven hearth / dish by turning the lid. He can too mutually change the positions of these inlets and outlets, respectively, by arranging blind flanges 41, 42, which can be exchanged for inlet and outlet, respectively, and these can thus also be arranged in a 90 ° angular ratio (with two blind flanges). The number blind spots can be different and limited only by the space on. lid 9. Design tion with interchangeable inlets ooh outlets (option 2) means a simpler and cheaper conversialven safer Izgnskonstruktion, as well as lighter and cheaper infodrizzg.

Two weak points less than in alternative 1 and thus even less risk of

Claims (3)

5 7800821 '6 breakthrough. No damage due to launch, then. the need for cwlik has been eliminated here. The furnace can also be provided with a vacuum-measured mortar level gauge, consisting of a water level (at 44), rod 43 drawn through the vault 9, at the end of which a ceramic float 45 is placed. The level of the flange in 11 is shown at 46. The devices according to above can be varied on. various ways within the scope of the following patentlcz-av. PATEWPKRAV Pressure- or valcuum-tight gutter nut with central hearth, fitted with lid (9) or arch, and separate inlets and outlets, opening into the respective draft from the hearth (10) at a level below the melting surface, and at least one inductor (4), k characterized in that an inlet (7) for melting and an outlet (38) for melting each comprise a pipe (B, 39) drawn through the furnace vault / look, for example ceramic, which is replaceable, and that the inlet pipe (8) and possibly also the seal of the outlet pipe (39) against the lid is pressure or vacuum tight, and that the positions of the inlet (7) and the outlet (38) are mutually locked or can be changed by blind flanges (41, 42), for example two pieces, in the lid (9), with the positions. for the inlet and the outlet relative to the environment of the furnace can be switched by turning the look and / or by moving the inlet and] or outlet to a position defined by a blind flange. Gutter wax according to claim 1, characterized in that a vacuum-tightly arranged rod is drawn through the lid, preferably through its center, which supports a ceramic float (45) for indicating the amel level (11) therein (10). Rënnugi according to one or more of the preceding patents, k - n n e - 1; e <= k n s a of the fact that the häraen (10) are farseaa maa means (17) for pressure tapping of the furnace. BEFORE PUBLICATIONS: Sweden potentonsökon 7415062-4, 313 151 (B27D 37/00)