MXPA98001808A

MXPA98001808A - A tragant closure for p ovens

Info

Publication number: MXPA98001808A
Application number: MXPA/A/1998/001808A
Authority: MX
Inventors: Hille Hartmut; Heinrich Peter; Otremba Werner; Ricke Marco
Original assignee: Sms Demag Ag
Priority date: 1997-03-07
Filing date: 1998-03-06
Publication date: 1999-02-24

Abstract

The present invention relates to an upper closing device for well furnaces, particularly blast furnaces, comprising a hopper for the entry of material with inlet pipe, a rotator, a vertically non-adjustable carrier ramp with a rotary impeller mounted under the inlet tube, a ramp pivotally mounted in an interior of the furnace attached to the carrier ramp, the ramp has external propulsion means, further comprises sealing members between the rotating and static components, wherein the rotating carrier ramp is assembled with a toothed crown attached to a flange in a rotating ball bearing flange arranged in a catch basket, wherein the rotary movement of the rotating carrier ramp is effected outside the interior of the furnace by an electromotive mechanism with a pinion, wherein the basket of retainer is mounted on a gasket ring support bracket of a gas seal cover, where the turning movement od and inclination of the ramp relative to an axis of the furnace within the rotating carrier chute is effected by a hydraulic or electromechanical propeller outside the interior of the furnace, wherein an annular seal member for sealing with respect to the rotating carrier chute is mounted in the furnace support ring beside the flange, and wherein an annular seal member for sealing relative to the static inlet pipe is mounted on an inner flange of the carried ramp

Description

A TRAILER CLOSURE FOR WELL OVENS FIELD OF THE INVENTION The invention relates to a trailing closure for a well furnace, especially for a blast furnace with a funnel for the introduction of the article with a flute tube, a cutting support that is in rotation whose height is not can change and with a rotating propeller, a cutter that can be rotated inside the oven with external propulsion elements as well as with some joints that are between the rotating and static parts. BACKGROUND OF THE INVENTION In order to introduce and distribute the baking loads of well furnaces, facilities have been known for a long time, which are constructed in accordance with the McKee principle. In this type of construction, with a hood pull-down closure, a bell is provided in the upper area and in the lower area. The upper bell of the bells or funnels placed one above the other, can be rotated. Improving the McKee trailing closure is a well-known construction, where the lower large bell does not have to form a gas permeable closure, because the rotating manifold that is attached to the bell is placed in a well sealed cover. In another improvement in accordance with German Patent Number DE 36 32 724 C2, the joint between the lower distribution hood and the grooving chamber can be neglected, since the upper funnel is produced by means of a static hood equipped with a feeder chute. , like a corrugated camera that can be closed. German Patent Number DE-OS-24 04 647 discloses an installation for propelling or moving an apparatus for feeding a blast furnace with raw material, where a distribution channel for emptying is connected to the lower end of an external cylinder and an internal cylinder, which in turn can slide, one in relation to the other, in axial direction and are placed independently. The distribution channel to empty in turn can be rotated with the external cylinder and the internal cylinder, and can be oscillated with the vertical movement of the internal cylinder or with the movement of the external cylinder opposite the external cylinder, or the internal cylinder respectively. The distribution channel for emptying works with the propulsion element that is provided in the blast furnace, with an electric propeller for the internal cylinder, as well as with a hydraulic propeller to raise and lower the external cylinder.

The internal cylinder or the outer cylinder have a flange that is supported on a support element, a toothed crown that loads the internal cylinder and the external cylinder. Between the internal cylinder and the outer cylinder is a sealing element. Patent No. AS-10 13 681 discloses a sealing installation for the trapping closures for well furnaces, with a pressure ring and a sealing ring and static mass that are found in the funnel to rotate , wherein the sealing of the pressure ring and the pressure mass is carried out by means of elasticity. In the case of the ring, which was placed in the capot of the closure in a gas-permeable manner, springs were fitted that can be adjusted, which exerts a clamping pressure on the mass to seal in a ring shape against the frosted ring which rotates in the direction of the funnel. The tightening pressure of the spring can be adjusted by means of a clamping device composed of a clamping nut that can be adjusted. In other well-known facilities for the feeding of well furnaces in accordance with the German Patents Numbers DE 20 35 458 and DE 20 65 460 among others, which handle the closure by means of a counterpressure, there is an entry for the article that is central and static, and on a cushion falls on the rotatable cutter. The seat for turning and the propulsion elements are in the area of the furnace. Also the last feeding facility that was described is improved in many aspects. In this way, for example, the elements for turning and propulsion are in an own shell, which is separated from the rest of the furnace area. A gas flushing inlet opens into the above-mentioned shell. In this way you must prevent the gases from the oven that are hot and heavily charged with dust.

OBJECTS AND ADVANTAGES OF THE INVENTION The purpose of the present invention is to improve the trapping closure for a well furnace without a bell, and that presents a preferably low construction form, where the execution of the construction is easy, understandable, and easy to maintain, and where, above all, the propeller for the rotary and oscillatory movements for the cutting stand and the cutter are not in contact with the furnace area. This purpose is solved in accordance with the invention in the following manner, as shown by the features of the independent claims 1 and 2. Advantageous developments of the invention are found in the dependent subclaims 3-8.

BRIEF DESCRIPTION OF THE INVENTION In the shutter closure according to the invention, wherein, under the flute hopper, there is a funnel for introducing the article with a flute tube according to claim 1, the cutting support that is located underneath the flute tube rotates along with the cutter, which enters the gas trap cap of the furnace. The construction height of the cutting support is kept low and, within the height measurements of this cutting support, just outside the furnace, propellers are provided which are spaced apart from one another - for the rotational movement of the support cutting with a cutter and for the oscillating movement of the cutter. Both thrusters worked completely separate. The propeller for rotating the cutting support preferably is composed of a ring gear and a pinion, and is driven by an electric motor. If this is the case, any other known type of propellant can be used. The impeller that is used to carry out the oscillating movement of the cutter can be a hydraulic, electromechanical, or mechanical propeller.

The propellers for turning and oscillating work, since they are installed outside the area of the furnace, under atmospheric pressure. A. difference of the rotary and oscillatory movements that are located one above the other in the cutting propeller of the state of the art, these movements are separated with a cutter that has a 'rotary movement, and with a clean oscillatory movement in the support cutting according to the invention. To seal the rotary cutting support, compared with the static funnel tube for the introduction of the article, frosted ring seals are used. The special carbon ring gasket proved to be very good for these purposes. In the alternative development of the trapping closure according to claim 2, not only rotates the cutting support with cutter, but also the channel with the funnel for introducing the article that is placed in the upper part joined with the support of cut. In this development the sealing is carried out opposite to the static opening of the channeler hopper and in the funnel for the introduction of the article that rotates together with the channel that was adjusted, by means of the joints of ground-joint ring, which are placed in the mouth of the channeler hopper. Apart from this, there are no opposites to the developments described in claim 1, nor any other type of variations. Cutters that are damaged or worn can be disassembled up or sideways. To disassemble a cutter upwards, first the ground-joint joints between the static grooving tube and the rotating cutting stand are dismantled. The lid is then removed through an access hole in the cutting support. The cutter is secured by an appropriate installation, so that the funnel can then be separated for insertion of the article into the cutter. Finally, the propeller is dismantled for the oscillating movement of the channel, the cutter is removed, and finally the cutter is disassembled. The disassembly of the cutter laterally is carried out by means of an opening that can be closed in the gas trap cover of the furnace. To protect the rotating cutting stand from the effect of heat, a cooling installation is provided on the floor of the cutting stand. As a cooling element you can use water or any other type of liquid that is suitable. A forced cooling works very well. Of course, if deemed necessary, the cooling installation can be placed along the internal wall. Instead of a cooling installation, a thermal protector, such as, for example, a stepped heat-permeable material, can be placed inside the cutting support either totally or partially. In addition, also a funnel-shaped temperature guard placed under the cutting support can shield the effect of heat upwards. In the following schematic figures, two ways of using the top closure for a well furnace according to the invention are described more fully. BRIEF DESCRIPTION OF THE DRAWINGS It is shown: Figure 1 shows a side view of the top closure, especially of the cutting support with a cutter. Figure 2 shows a front view of the cutting support with a cutter. Figure 3 shows a side view of an alternative top closure, in particular of a cutting support with a cutter. DETAILED DESCRIPTION OF THE INVENTION In the Figures of the Patent 1 and 2 there is shown an example of use of the trailing closure according to claim 1 as well as with the 3 to 7. The cutting support (4) rotates with the cutter ( 5), while the flute tube (3) is held static with the funnel for inserting the article (2) (not shown). In Figure 3 there is shown an alternative use example of the trailing closure according to claim 2. In this case not only rotates the cutting support (4) with the cutter (5) but also the channel (3) and the funnel for the introduction of the article (2) . In this example the frosted ring joints (14.3) are placed in the opening (1.1) between the funnel for the introduction of the article (2) and the channeling hopper (1). With reference to Figures 1 and 2, the cushion for the feeding of the blast furnace is channeled through a flute hopper, which is not shown, in a funnel for the introduction of the article (2) below. From the funnel for the introduction of the article (2), the cushion arrives, through a channel tube (3), to a cutter (5) rotatable and pivotable that is inside the cutting support (4) and from there reaches the top of the blast furnace. The cutting support (4) with cutter (5) which is in a rotating ball joint (15) is set in rotation by means of a turning propeller composed of a pinion (8), a gear (7), and an electric motor (6). The propeller of the cutting support in its entirety (6, 7, 8) is placed on a console (9), which rests on the gas trap cover (11) of the blast furnace. The propeller to oscillate hydraulics (13.1) or the propeller to oscillate electric (13.2), to be able to carry out the oscillatory movement of the cutter (5) opposite the axis of the furnace, is inside the cutting support (4) on the outside of the well furnace. In Figure 1, the suitable cutter (5) shown is additionally scored vertically and shown in the final position. The joints to seal the blast furnace in the area of the cutting support (4) that is rotating opposite the static channel (3), are marked with (14.2); the joints between the cutting support (4) that is rotating and the oven support ring (10) are marked with (14.1). The rotating ball joints (15) and the flange (4.1) of the cutting support (4) are placed on baskets for loading (16). To be able to regulate an eventual lateral movement of the cutting support (4), guide rollers (21) are placed on supports (22), which rest on the gas trap cap (11). It is also possible to place the guide rollers, which are supported on the cutting support, on the diameter of the channel (3), in order to control any possible movements. In the internal part of the cutting support (4), an access hole with a cover (20) is located on the right side. The cutting support (4) has in its inner part, at least on the floor, a cooling installation (19). In the front view of Figure 2 it is possible to recognize the temperature protector (17) which is on the floor of the cutting support (4). In addition, in the temperature protector (17) there is a slot (18), which allows the cutter (5) to rotate. Finally, it is indicated in Figure 1, a opening (12) that can be closed, with which, if the case arises, you can remove the cutter (5) that is hurt or worn. Figure 3 shows an example of alternative use corresponding to claim 2. In this development, the channel (3) and funnel for the introduction of the article (2) that is above the first, rotate together with the cutting support (4), and the cutter (5) can oscillate around the axis of the furnace. The sealing of the funnel for the introduction of the article (2), which is rotating opposite to the static opening (1.1) of the channeling hopper (1), is carried out by means of a ring-shaped seal (14.3), which it is placed on the static outlet (1.1). The sealing of the cutting support (4) that is rotating is carried out by a sealing ring (14.1) in the form of a ring, which is placed on the support ring of the furnace (10) of the gas trap cap. (11) to one side of the flange (16.1) of the basket to catch (16). The rotary movement of the cutting support (4) that is rotating is carried out outside the area of the furnace through an electromotive drive (6) with a pinion (8). The catch basket (16) is positioned so that it can be removed in the flange of the oven support ring (10) of the gas trap cover (11), and the rotary and oscillatory movements of the cutter are carried out ( 5), opposite the furnace shaft inside the cutting support (4) that is rotating, through a hydraulic (13.1) or electromechanical (13.2) propeller in the outer part of the furnace area.

Claims

NOVELTY OF THE INVENTION Having described the above invention, it is considered as a novelty, and therefore, the content of the following is claimed as property: CLAIMS

1. . A shaft seal for well furnaces, especially for a blast furnace with a funnel for the introduction of the article with a flute tube, with a cutter support that is in rotation whose height can not be changed, with a propeller for turning, with a cutter that can not be rotated inside the oven with external propulsion elements, as well as with joints between the rotating parts and the static parts, characterized in that: the cutting support that is in rotation (4) is together with the flange (4.1) which is connected to the ring gear (7) on a rotating ball joint (15) which is in a basket for catching (16), the rotary movement of the cutting support that is rotating (4) ) is carried out in the external part of the furnace area, with an electromotive propeller (6) with a pinion (8), the catch basket (16) is placed in the furnace support ring (10) of the bonnet. gas trap (11), the movement To oscillate and rotate the cutter (5), compared to the furnace axis, it is carried out inside the cutting support that is rotating (4), by means of a hydraulic (13.1) or electromechanical (13.2) propeller, respectively, on the outside of the furnace area, - on the furnace support ring (10), on one side of the flange (16.1) ) of the basket to catch (16), is provided with a circular seal (14.1) opposite the cutting support that is in rotation (4), and on the inner flange (4.2) of the cutting support (4) is provided a joint in the form of a ring (14.2) opposite the channel (3).

2. A downhole for well furnaces, especially for a blast furnace with a funnel for the introduction of the article, with a cutting support that is in rotation whose height can not be changed, with a rotating propeller, with a cutter which can be rotated, with a propulsion element, as well as with joints between the rotating and static parts, characterized in that: the cutting support that is in rotation (4) rests together with the flange (4.1) which is connected to the Toothed crown (7) on a rotating ball joint (15) which is in a basket for catching (16), the rotary movement of the cutting support that is rotating (4) is carried out in the outer part of the area of the furnace by an electromotive propeller (6) with a pinion (8), the catching basket (16) is provided in the oven support ring (10) of the gas catch cap (11), - the oscillating movement and rotary cutter (5), compared to the axis of the The furnace is carried out inside the cutting support that is in rotation (4), by means of a hydraulic (13.1) or electromechanical (13.2) propeller, respectively, in the external part of the furnace area, in the support ring of the oven (10), on one side of the flange (16.1) of the basket to catch (16), is provided with a circular seal (14.1) opposite the cutting support that is in rotation (4), - the inner flange (4.2) of the cutting support that is rotating (4) is connected to the channel (3) so that it can not be dismantled, the channel (3) is connected to the funnel for inserting the article (2) , so that it can be disassembled, and the seal of the funnel for the introduction of the article (2) is realized, in comparison with the static opening (1.1) of the channeling hopper (1), by means of a circular joint (14.3) .

3. A drainage closure for well furnaces and similar furnaces according to claim 1 or 2, characterized in that: the cutting support that is in rotation (4) and the static grooving tube (3) or the tube The groove (3) rotating together with the cutting support (4), are armed in such a way that the cutter (5) can be disassembled upwards.

4. A pull-down closure for well furnaces and similar furnaces in accordance with claim 1 or 2, characterized in that: to disassemble the cutter (5) to one side, a closing opening (12) is provided in the gas trap cover (11).

5. A drainage closure for well furnaces and similar furnaces, according to claim 1 or 2, characterized in that: under the cutting support (4) is provided a temperature lock (17) that also rotates with the cutting support and having a groove (18) for the cutter (5), and preferably having funnel shape.

6. A pull-down closure for well furnaces and similar furnaces according to claim 1 or 2, characterized in that: as the ground-ring joints (14), sliding carbon ring gaskets can be used.

7. A drain closure for well furnaces and similar furnaces in accordance with claim 1 or 2, characterized in that: the cutting support that is in rotation (4) is provided, in the internal part or in the part external, with at least one cooling installation (19) or thermal insurance.

8. A downstream closure for well furnaces and similar furnaces according to claim 7, characterized in that: the cooling installation (19) can preferably be operated as a forced cooling system.