DE3016165A1 - Coke oven door seal - with horizontal and stronger vertical springs acting on knife edge - Google Patents

Abstract

A coke oven door for coke ovens of the horizontal chamber type is sealed against the door frame by a knife edge which is first adjusted roughly by hammer blows. Short thrust bars, held by hook bolts to the door periphery, contain horizontal spiral or disc springs which urge the knife edge against the door. Longer and stronger vertical spiral or disc springs act on a stem which urges the knife edge against the door frame. This ensures an automatic fine adjustment of the knife edge seal and a compensation for dimensional changes between door and door frame during the carbonizing period. The new seal can be subsequently added to existing doors.

Description

The invention relates to a coke oven door for a horizontal

chamber coking furnace with a top-side of the furnace chamber, closed all-round door frame, which has flat sealing surfaces on its outside, a door body that can be fixed on the door frame and one on the door body via hook screws Fastened, circumferential sealing strip that rests on the door frame when the door closes.

There are special requirements for tightness on coke oven doors provided, whereby a reliable seal is required even after a long period of operation will. However, only a few of the numerous known door constructions meet this requirement. A major reason for this is the heavy soiling of the doors, in particular but in the contamination of the sealing elements by tarry components, which precipitate from the coke oven gas on these and on the sealing surface on the door frame. These greasy residues make cleaning measures to be carried out periodically required, which are usually associated with a considerable amount of work and which Sealing elements so affected that in the known door constructions a sufficient seal is no longer guaranteed after a long period of operation is an aggravating factor that the sealing elements are only in the Measure the operation-setting bending line of the Vokoofentürre set. That I this bending line especially when the coke oven door is left open for a long time or after longer operating times, sealing elements must be adjustable in this way be.

Self-sealing doors are under the name Harmnerschlagtüren former Wolff company. A closed frame is used as the sealing element made of flat iron with a slightly harder cutting edge. This flat iron is through Clamping screws or hook screws pressed against the door body and hammered on the upper edge of the flat iron to the shape of the door frame or

adapted to the bending line of the door. There are also sealing devices known for coke oven doors, in which several parallel metallic Sealing cutting edges, if necessary, with sealing strips made of elastic between them Material to be used.

This lamb shock sealing strips have the advantage that they are changing conditions in particular related bending line of the door body can be adapted, often holding devices against the restoring forces Sealing strip are provided so that the actual sealing strip is rigid on the door body can be stored. Slight heat distortions during the cooking time can result this sealing system cannot be compensated, which is why there are leaks during the cooking time can come.

Simply because of this fact and the stricter environmental protection regulations In the meantime, you leave these easy-to-use and inexpensive sealing strip doors and replaces them, especially in new systems, with expensive and complicated membrane doors, the low heat distortion during the cooking time through the membranes should be balanced. In membrane doors of this type, however, it is disadvantageous that they usually have no coarse adjustment, so that such an adjustment or correction is not possible (DE - Po 1065 770, patent application P 54 016 D). To avoid such a rough setting, the coke oven doors are cold and The hot part is subdivided so that fine adjustments can be made. In doing so, however, the plunger of the membrane must be withdrawn in the middle part of the coke oven door and at the ends of the door can be adjusted forward, thus by this interpolating the membrane deflection is not too great, otherwise the work of deformation of the The membrane compensates a large part of the spring pressure forces and the membrane does not would be pressed more with sufficient force. However, it cannot be avoided that leaks arise from graphite and other deposits of dirt and the like Doors still burn during the cooking time. .Quch on the smallest of approaches Such membrane doors are no longer tight against the sealing surface, whereby the resulting Fires, twisting and bending occur, which are often no longer repairable are. Another disadvantage of such membrane doors is that the replacement of the Membrane on the coke oven door is very time-consuming and costly, and this work as well as the setting and adjustment of the coke oven doors can only be done by and special forces can be carried out.

Recognizing that the world-famous high-ranking robust Wolff sealing strip a relatively simple rough adjustment of the sealing system on the bending line at the coke oven door, the object of the invention is is based on one of the respective bending lines of the coke oven door even in the assembled state to create easily adaptable sealing that will occur during the cooking period Distance annoyances between the door frame and the door body are automatically compensated and which can be used for existing and new systems.

The object is achieved according to the invention in that the hammer blow roughly adjustable metallic sealing strip a horizontally towards the door body and at the same time pressure device influencing vertically in the direction of the door frame is assigned for automatic fine adjustment.

After the rough adjustment has been made, use a hammer and chisel the slight distortions of the coke oven door that then still occur automatically compensated by the pressure device so that the coke oven door always remains tight. Possible caking that the automatically acting pressure device does not penetrate or can be destroyed, -are removed with a hammer blow, -without the automatic the pressure device is affected. That would make it easier and expediently possible, including those that have so far often led to leaks To render pollution harmless.

The solution according to the invention thus offers significantly compared to the more expensive and complex membrane seals have the advantage of greater robustness and in particular the possibility of not being eliminated by the cleaning device To make dirt on the sealing surface harmless. So one is always denser Connection of the coke oven door guaranteed during the cooking time.

Automatic tracking of the sealing strip is in the case of the invention Pressure device guaranteed because the applied by the pressure device vertical force component clearly exceeds the horizontal force component. while the horizontal force component is sufficiently dimensioned to produce a dense To ensure that the sealing strip adjoins the door body, the vertical Force component dimensioned in such a way that there is always a tight deposition of the sealing strip, doh. the sealing edge on the door frame shears off After an appropriate training the invention serve as a pressure device seated in front of the sealing strip and from the hook screw held pressure bar with at least one embedded therein horizontally arranged spring and at least one on a plunger that is on the Upper edge of the sealing strip can be placed, acting, adjustably arranged vertical spring package The readjustment by means of a hammer blow can be performed with such a pressure device can be carried out much more easily than with the usual 2.5 t acted on Hakenschraubeli, since the sealing strip itself only has a frictional connection is held by the horizontally arranged spring, whose relatively low contact pressures can easily be overcome with a hammer blow. Since in principle the known Shake bolts are also used, each with a such a sealing strip equipped coke oven door can be converted with the non-positive Connection via the existing holes in the door body can be achieved The simultaneous Acting on the sealing strip in the horizontal and vertical direction is particularly important expedient shape due to the suspension of the horizontal springs and the vertical spring assemblies provided in a common housing.

In order to be prepared for the relatively robust gearbox, one is required Another embodiment of the invention provided that the horizontally arranged spring and the vertical spring package are formed by disc springs. Such disc springs are especially against thermal fluctuations relatively insensitive and also withstand the knocks that occur when removing and inserting the doors.

Adjustment and readjustment of the pressure device is easy to accomplish, since according to the invention the vertical spring package in a spring sleeve is arranged, which simultaneously receives a plunger with a plunger collar and which on one placed on the pressure bar and of a recess for receiving the The plunger penetrated cam can be screwed on. Here is the vertical spring package between the bottom of the screwable spring sleeve and the plunger collar tense. As soon as a readjustment due to upheavals or for other reasons is necessary and the vertical spring package no longer exerts the necessary forces on the Sealing strip transmits, the spring carrying the vertical spring assembly and the plunger becomes The sleeve is screwed further onto the cam, creating the necessary forces have it set again. An advantageous visual control is according to the invention given that the plunger protrudes through a hole in the bottom of the spring sleeve is arranged, wherein the plunger in the protruding area at the predetermined distance is penetrated to the end of the ram by a signal and locking pin. So is allows easy handling of the setting, since it is purely optically controlled whether the signal pin has the specified distance to the bottom of the spring sleeve having. If this is not the case, the spring sleeve can be tightened the necessary correction must be carried out. This pen also has the Task, a too large influencing the spring characteristic of the vertical spring picote To prevent expansion or excessive dropping of the plunger.

Taking advantage of the space available for such systems the invention provides that the plunger below the plunger collar a has off-center and offset in the direction of the sealing strip approach. In order to it becomes possible to have sufficiently strong and the corresponding space requirements Use vertical spring assemblies without the transmission of these Spring assemblies outgoing forces on the sealing strip would be impaired.

To ensure that the plunger is twisted when the spring sleeve is actuated to prevent, it is provided according to the invention that the guided approach is one-sided and that is flattened on the pressure bar wall. Even with larger ones vertical movements thus remains the approach or the entire plunger in each same position.

A particularly cheap and safe power transmission from the spring package on the sealing strip in the vertical direction is improved in that between Approach and sealing strip an S-shaped3 Andruek intermediate piece is arranged, which with sits on his back on the sealing strip.

The approach of the plunger is between the upper part of the S-shaped Andruck Zwischenstückes and the Druckriegelwandung out what a uniform Sequence of movement additionally guaranteed. This sequence of movements is still there additionally evened out by the fact that the lower part of the intermediate pressure piece is several times the width of the upper part. So the upper part has the same As wide as the base of the pestle. Tilting moments are thus essentially prevented. These additional features improve the use of the pressure device according to the invention with given cramped space.

The horizontally acting spring forces are constant according to the invention. It is useful to put the horizontally arranged spring in a hammer head formed recess to be arranged. This simplifies the enables the entire pressure bar and at the same time achieves that for special applications such a hook screw can also be used alone. Here is one good introduction of the I forces in the horizontal direction, if as according to the invention provided the recess is circular.

For new systems in which the holes in the door body correspond to the respective Conditions are attached accordingly, it is necessary if the pressure latch each end a horizontally acting spring assigned to a hook screw and has a vertical spring package in the middle. By choosing the vertical spring packages With such a design, a sufficiently high vertical force introduction can be achieved Direction to be provided on the sealing strip.

Are the holes required to hold the Ilak screws already present in the door body, it can be useful that the pressure bolt in the center a horizontally acting spring assigned to a hook screw and at the end each having a vertical spring package, then between two each so designed A hook screw with a horizontally acting spring is assigned to the sealing strip for pressure latches is. With such a device, an optimal introduction of the forces in horizontal and vertical direction guaranteed, with the individual pressure bar each other or against the hook screw with a horizontally acting spring trim off.

The invention is particularly characterized in that in advantageous Way an automatic readjustment of the robust and roughly adjustable via hammer blow Sealing strip is possible. The adjustment is facilitated by the fact that an optical Control over the signal and locking pin is in place. The same with this one Sealing system existing disadvantage of the lack of automatic destruction or removal the dirt and incrustations remaining on the sealing surface (graphite) and the resulting leakage is the first time with this sealing system compensated by the fact that the contamination is otherwise fully effective can be destroyed by striking the sealing strip with a hammer without the previously set sealing system must then be readjusted or changed.

Further details and advantages of the subject invention result from the following description of the associated drawing, in the preferred Embodiments ii shown the necessary details and individual parts are. Zs show: FIG. 1 a coke oven door with pressure devices in a front view, Fig. 2 such a coke oven door in side view and partially cut, Fig. 3 the coke oven door in horizontal section, FIG. 4 a pressure device in cross section in a first embodiment, Fig. 4a a pressure device in cross section according to a second embodiment, Fig. 5 detail of the vertical spring package in Horizontal section, FIG. 5a detail of FIG. 5 in vertical section, FIG. 6 a Pressure device according to FIG. 4 in side view, partially in section, FIG. 6a Pressure device according to FIG. 4a in side view and FIG. 7 individual hook screw on average The ones at the end of a horizontal line, not in the individually shown coke oven chamber attached coke oven door 1 each has a cast iron door body 2, which clad to the furnace head and closed circumferential door frame 3 can be pressed. A sealing strip 4 is provided on the door body 2 attached, which is designed as a running flat iron on edge.

Fig. 1 shows such a Koisofentür 1 in front view, wherein the circumferential sealing strip 4 via pressure devices 5, 6 in each case against the Door frame 3 is pressed so that it is sufficiently tight after applying the lock 8 is pressed onto the sealing surface 9, so that the furnace chamber 11 or its furnace channel opening 10 is sealed by closing the channel 12.

According to FIGS. 2 and 3, the coke oven door 1 or its door fabrics 13 protrude into the furnace chamber opening 10. This remains between the furnace chamber walls and the door plug 13 of the channel 12, which is then as shown in FIG Sealing strip 4 or the sealing edge 19 extends.

Fig. 4 shows such a pressure device, which with the Locking nut 14 provided hook screw 15 is attached to the door body 2. For this the door body 2 has corresponding bores, either according to the Pressure device 5, 6 are drilled in lreuananlagen or else in existing systems were already required for the previously common hook bolts.

The pressure devices 5, designed as pressure bars 1 (), 17 6 consist of the hook screw 15 acting together with the locking nut 14 Spring 22, which are arranged in a recess 21 in the hammer head 20 is and the vertical spring assembly 23, which is on the upper edge 18 of the sealing strip 4 acts and is housed in a spring sleeve 24. To the mother 14 of the Ilakensehraube 15, which penetrates the screw holder 23, are in contrast u the usual ones Hook bolts only applied about 0.5 t. Through this and through the horizontal arranged spring 22, a frictional connection to the sealing strip 4 is generated, the one Sufficiently tight attachment of the sealing strip 4 on the door body 2 is ensured and at the same time a corresponding vertical influence via the vertical spring package 28 allows.

The vertical spring package 28 is between the bottom 27 of the spring sleeve 24 and the plunger collar 2u of the plunger 25, which is also guided in the spring sleeve 24 is tense.

On the tappet 25, beyond the tappet collar 26, I close an eccentrically attached approach 29, which is in the recess 31 in the lure 30 together with the S-shaped intermediate pressure piece 37 is guided. The dry 3O has a thread 32 so that the spring sleeve 24 having an internal thread in the vertical direction can be moved. The rotation of the plunger 25 when the spring sleeve 24 is actuated is prevented because the extension 29 guided in the region of the bore 31 1 is flattened 35 in the direction of the pressure bar wall 30.

The S-shaped intermediate pressure piece 37 sits on its back 38 the top edge 1; the sealing strip 1.

While the upper part 40 of the S-shaped intermediate pressure piece 37 is performed together with the approach 29 in the region of the bore 31, is essential wider lower part 39 in a correspondingly enlarged recess 31 guided. This widened design of the lower part 39 of the S-shaped Andruckzw ischenstückes 37 tilting and tilting moments are avoided largely free transmission of the horizontal forces to the S-shaped hand pressure adapter 37 and thus on the light bar 4 guaranteed.

The plunger 25 itself is via a sleeve 24 in the base 2'7 of the spring formed bore out and at a predetermined distance from the end of the ram 53 penetrated by a signal and locking pin 34. The distance between signal and locking pin 34 and outside of the bottom 27 of the spring sleeve 24 is respectively specified and a wet for the spring forces applied by the vertical spring assembly 28.

This is a simple monitoring of the functionality and the Given spring forces, because the distance optically or by inserting rulers can be easily monitored.

Fig. 5 and Fig. 5a show a section and the special training de: 3 approach 29 of the plunger 25 in the area of the recess 31 in the curl 30. The flattening is denoted by 35 and, as mentioned, prevents the plunger 25 from rotating.

Fig. 6 and Fig. 6a show two different embodiments of the Pressure device. According to Fig. 6, the pressure device consists of the pressure bar 16, 17 and 42 in general, the two hook bolts 15, 15 'with horizontally arranged Springs 22, 22 'and a vertical spring package 28 consists.

This vertical spring assembly 28 is centered between the two horizontally arranged springs 22 positioned, such an embodiment in particular is suitable for new layers, where the distance between the Itak screws 15, 15 'is still determined can be.

In the embodiment according to FIG. 6a, there is the pressure device on the other hand, from the centrally arranged hook screw 15 and the ends arranged Vertical spring assemblies 28, 28 '. Such formed pressure bars 43 are alternately with simple jack screws 44, in the hammer head of which a spring 22 is arranged horizontally is mounted on or in the sealing strip 4. In the middle between the vertical spring packages 28, 28 'a hook screw 15 with a horizontally arranged spring 22 is provided. This is also the case with existing systems and given hole spacing an assembly of the pressure device 5, 6 and their uniform introduction of force possible.

Both embodiments (FIGS. 6 and 6a) are side by side in FIG. 2 shown, which makes it clear that with both embodiments a uniform Force introduction into the sealing strip 4 is guaranteed. According to the embodiment Fig. 6a and Fig. 7 is in each case the individual hook screw between the pressure devices 44 arranged.

L e r s e i t e

Claims (13)

"Coke oven door with hammer-blow sealing strip" P a t e n t a n s p r ü c h e 1. Coke oven door for a horizontal comb coking oven with one on the oven chamber on the head side, closed all-round door frame, the one on its outside Has flat sealing surfaces, a door body which can be fixed to the door frame and a attached to the door body via hook bolts, circumferential and when the door closes au dem Door frame seated sealing strip, characterized in that the hammer blow roughly adjustable metallic sealing strip (4) one horizontally in the direction Door body (2) and at the same time influencing vertically towards the door frame (3) Pressure device (5, 6) is assigned for the automatic fine adjustment. 2. coke oven door according to claim 1, characterized in that as a pressing device (5, 6) seated in front of the sealing strip (4) and held by the hook screw (15) Pressure bar (16, 17) with at least one horizontally arranged one embedded therein Spring (22) and at least one on a plunger (25) which is on the upper edge (18) the sealing strip (4) can be placed, acting, adjustably arranged vertical spring package (28) serve. 3. coke oven door according to claim 1 and claim 2, characterized in that that the vertical spring assembly (28) is arranged in a spring sleeve (24) which simultaneously a plunger (25) with a plunger collar (26) and the one on the pressure bar (16) placed and penetrated by a recess (31) for receiving the plunger Cam (30) can be screwed on. 4. coke oven door according to claim 2 and 3, characterized in that the horizontally arranged spring (22) and the vertical spring package (28) of disc springs are formed. 5. coke oven door according to claim 2 to claim 4, characterized in that that the vertical spring assembly (28) is arranged between the bottom (27) of the screwable The spring sleeve (24) and the plunger collar (26) is braced. 6. coke oven door according to claim 2 and 3, characterized in that the plunger (25) protruding through a hole in the bottom (27) of the spring sleeve (24) is arranged, wherein the plunger (25) in the protruding area at the predetermined distance to the ram end (33) is penetrated by a signal and locking pin (34). 7. coke oven door according to claim 2 and 3, d a d u r c h g e k e n n z e i c h n e t that the plunger (25) below the plunger collar (26) is off-center and has projection (29) arranged offset in the direction of the sealing strip (4). 8. coke oven door according to claim 7, d a d u r c h g e k e n n z e i c h n e t that the extension (29) guided in the area of the elastic screw (15) is on one side on the pressure bar wall (36) is flattened. 9. coke oven door according to claim 2 and 3, d a d u r c h g e k e n n z e i c h n e t that between the shoulder (29) and the sealing strip (4) a 5-shaped pressure adapter (37) is arranged, which rests with its back (38) on the sealing strip. 1o. Coke oven door according to claim 9, d u r c h g e k e n n z e i c h n e t that the lower part (39) of the intermediate pressure piece (37) is multiple Having width of the upper part (40). 11. coke oven door according to claim 2 and claim 3, d a d u r c h g e It is not shown that the horizontally arranged spring (22) is in one in the hammer head (20) formed recess (21) is arranged. 12. coke oven door according to claim 2 and 3, d a d u r c h g e k e n n z E i c h n e t that the J) ruckriegel (16, 17) at the end each one of a hook socket (15) associated horizontally acting spring (22) and in the middle a vertical spring package (23). 13. coke oven door according to claim 2 and 3, characterized in that the pressure bar (42, 43) in the middle has a horizontally assigned to a hook screw (15) acting spring (22) and at each end a vertical spring package (28, 28 '), with a hook screw between each two locking devices (42, 43) designed in this way (44) is assigned to the sealing strip (4) with a horizontally acting spring (22).