TW201429568A - Device for cleaning a charging hole frame - Google Patents

Abstract

The invention relates to a device (1) for cleaning a charging hole frame (2), which is disposed at the upper end of a charging shaft (3) in the oven ceiling of a coke oven chamber. The device (1) comprises a support (4) and a cleaning head (5) mounted rotatably on the support (4) and capable of being driven in a rotary manner. The cleaning head (5) comprises at least one cleaning tool (8) for the mechanical cleaning of the charging hole frame (2). According to the invention, a blowing arrangement with at least one blowing nozzle (9), from which a gas flow (10) directed into the charging shaft (3) exits, is disposed on the device (1).

Description

Device for cleaning the feed hole frame

The present invention relates to a device for cleaning a feed hole frame that is disposed at the upper end of a feed neck in a furnace roof of a coke oven chamber. The device includes a carrier and a cleaning head that is rotatably mounted to the carrier and that is rotatable. The cleaning head includes at least one cleaning tool for mechanically cleaning the feed aperture frame.

During operation of the coke oven, coking coal is charged into the coke oven chamber via feed holes and subsequent feed necks. The feed hole is closed by the feed port cover during the coking process. The edge of the feed hole cover is generally cast with a heat-resistant sealing compound to make it airtight. When the feed hole is opened again, the sealing compound residue remains on the frame of the feed hole. If the residue is not removed, it can prevent proper and airtight placement of the feed port cover during the subsequent coking process. In order to remove the residue, a feed hole frame cleaner comprising a cleaning head rotatably arranged with a cleaning tool is used. A feed-hole frame cleaner is known, for example, from DE 1 040 505.

For the known embodiment of the feed hole frame cleaner, the drawback is that the residue and dirt removed from the feed hole frame can be in contact with the heated wall of the feed neck, remain attached thereto and burn on the heated wall. This reduces the feed cross section of the feed orifice and hinders the feed to the appropriate coke oven chamber.

In this context, the problem underlying the present invention is the provision of means for cleaning the feed orifice frame which ensures that residues removed from the feed orifice frame do not block the feed orifice or feed neck.

According to the present invention, the problem is solved by the apparatus of the first aspect.

The basic structure of the apparatus for cleaning the feed hole frame, which is disposed at the upper end of the feed neck of the furnace roof of the coke oven chamber, includes a carrier and a cleaning head rotatably mounted on the carrier and capable of rotating Way to drive. The cleaning head includes at least one cleaning tool for mechanically cleaning the feed hole frame. This can for example be a brush, in particular a steel brush; or a scraper. According to the invention, the device comprises an air blowing arrangement having at least one blowing nozzle from which the air flow directed into the feed neck occurs. The separated dirt particles are picked up by the air stream and reliably delivered to the coke oven chamber via the feed neck. It can effectively prevent adhesion to the neck of the feed furnace. The combustion of any deposit can also be induced when using an oxygen-containing stream, such as compressed air. Therefore, the air flow is independent of the cleaning device of the cleaning device to obtain an additional cleaning effect.

According to an advantageous embodiment, the cleaning head is rotatably mounted around a vertical axis of rotation. The mouthpiece is arranged at a radial distance on the cleaning head, the latter comprising a rotatable connection for the gas supply line, the connection being arranged in the axis of rotation. The mouthpiece disposed on the cleaning head is jointly moved by the rotational movement of the cleaning head. The airflow outlet moves along the annular path during the rotational movement of the rotary head due to the radial offset with respect to the axis of rotation. Therefore, the entire outer circumference of the feed hole frame and the feed neck can be covered by a mouthpiece or a small number of mouthpieces.

The cleaning head preferably comprises a hollow body that is connected to the gas supply line by any rotatable connection. A plurality of blowing nozzles are suitably disposed on the outer surface of the cleaning head facing the neck of the feeding furnace, and the blowing nozzles communicate with the inner space of the hollow body receiving the gas on the rear side. The further transport and distribution of the gas through the hollow interior of the cleaning head represents a particularly robust and easy to implement design. No expensive piping and/or hose installation and maintenance costs are incurred on the rotatable cleaning head. Due to the large number of nozzles, the different angle regions of the feed orifice frame and the outer periphery of the feed neck can be simultaneously exposed to the gas flow.

The mouthpieces are interchangeably and/or rotatably suitably arranged in the holding fixture of the cleaning head. It is therefore also possible to replace the contaminated or damaged mouthpiece between two cleaning cycles during ongoing operations, or to optimize the mouthpiece by adjusting the mounting angle relative to the feed neck. effect.

More preferably, additional blowing nozzles are provided on the cleaning tool, the additional blowing nozzles being in communication with the interior space of the hollow body receiving gas on the rear side. The air stream exiting the additional mouthpiece is directed to the surface of the cleaning tool or feed frame that is acted upon by the cleaning tool. This air flow prevents or at least delays staining and clogging of the cleaning tool. The dirt released by the cleaning tool is immediately conveyed forward through the feed hole and cannot block the cleaning head.

According to a further advantageous embodiment, the air blowing arrangement comprises a blowing head arranged in fixed arrangement with at least one blowing nozzle. The cleaning head is configured to perform a rotational movement of the annular body around the blowing head. In this embodiment, a rotatable connection of the compressed gas line to the cleaning head is not required. Maintenance costs can be reduced by separating the blow configuration from the function of the cleaning head.

The blowing head preferably comprises a plurality of mouthpieces oriented outwardly inclined, the nozzles projecting from the underside of the cleaning head. Since the position of the mouthpiece is inclined, the airflow flows directly on the neck wall of the feed furnace. Here, directly above the incoming flow, a downwardly directed external air flow is produced in the region of the feed orifice frame due to the drag effect of the gas stream exiting the blow head.

The blowing head is suitably fixed directly to the carrier, on which the cleaning head is also rotatably mounted. The carrier can be suspended from the pendulum element. The pendulum element compensates for deviations in the position of the feed hole frame and always enables the cleaning device to be placed correctly on the feed hole frame.

In accordance with a preferred embodiment of the present invention, the rotatably mounted cleaning head includes a roller bearing that compensates for the oblique movement between the carrier and the cleaning head.

The invention is explained below by means of two examples of the examples.

1‧‧‧ device

2‧‧‧ Feed hole frame

3‧‧‧Feeding neck

4‧‧‧ Carrier

5‧‧‧ cleaning head

6‧‧‧ Roller bearings

7‧‧‧ Gears

8‧‧‧ cleaning tools

9‧‧‧Blowing mouth

10‧‧‧ airflow

11‧‧‧ vertical axis of rotation

12‧‧‧Rotatable connectors

13‧‧‧ gas supply pipeline

14‧‧‧Additional mouthpiece

15‧‧‧ airflow

16‧‧‧Blowing head

17‧‧‧ tubular vertical section

In the drawings, in schematic form, Figure 1 shows a cross-sectional representation of the entire apparatus of the present invention for cleaning a feed aperture frame at a working position above a feed aperture, and Figure 2 shows an alternative embodiment of the apparatus. Figure 1 is a representative diagram.

Figure 1 shows a cross-sectional representation of the entire apparatus 1 of the invention for cleaning the feed aperture frame 2. The feed hole frame 2 is disposed at the upper end of the feed neck 3 in the top of the coke oven chamber not shown. The device 1 comprises a carrier 4 which is suspended by means of a pendulum element, also not shown. A cleaning head 5 having a roller bearing 6 is rotatably mounted on the carrier 4 and is drivable by means of a gear 7. The cleaning head 5 comprises a cleaning tool 8 which acts on the seating surface of the feed aperture frame 2 when the cleaning tool 8 is in the working position. The cleaning tool 8 performs mechanical cleaning of the feed hole frame 2 via the rotation of the cleaning head 5. According to the invention, the blowing arrangement is provided with at least one blowing nozzle 9, and the gas stream 10 directed to the feeding neck 3 is discharged from the blowing nozzle 9. The mouthpiece 9 is arranged at a radial distance from the vertical axis of rotation 11 of the cleaning head 5 and its rear side projects into the interior space of the cleaning head 5 which is embodied as a hollow body. The cleaning head is coupled to the gas supply line 13 by a rotatable connection 12. Additional mouthpieces 14 are also provided on the cleaning tool 8, which are also in communication with the interior space of the cleaning head 5 that receives the gas on the rear side. The air flow 15 emerging from the additional mouthpiece 14 is directed to the surface of the cleaning tool 8 or the feed aperture frame 2 which is acted upon by the cleaning tool 8.

Figure 2 shows an alternative embodiment of the device 1 of the invention for cleaning the feed aperture frame 2. The blowing configuration comprises a blowing head 16 having a central arrangement of at least one blowing nozzle 9. The cleaning head 5 is configured to perform a rotationally moving annular body around the blowing head. The blowing head 16 is fixed to the carrier 4 together with the tubular vertical section 17 of the gas supply line 13. The vertical section 17 of the blowing head 16 and the gas supply line 13 is collinear and concentrically arranged with respect to the axis of rotation 11 of the cleaning head 5.

1‧‧‧ device

2‧‧‧ Feed hole frame

3‧‧‧Feeding neck

4‧‧‧ Carrier

5‧‧‧ cleaning head

6‧‧‧ Roller bearings

7‧‧‧ Gears

8‧‧‧ cleaning tools

9‧‧‧Blowing mouth

10‧‧‧ airflow

11‧‧‧ vertical axis of rotation

13‧‧‧ gas supply pipeline

16‧‧‧Blowing head

17‧‧‧ tubular vertical section

Claims (10)

A device (1) for cleaning a feed hole frame (2), the feed hole frame (2) being arranged at an upper end of a feed neck (3) in a furnace roof of a coke oven chamber, having a carrier (4) and a cleaning head (5) rotatably mounted on the carrier (4) and rotatablely, the cleaning head comprising at least one mechanical cleaning of the feed aperture frame (2) a cleaning tool (8), characterized in that it has an air blowing arrangement with at least one blowing nozzle (9) from which the air flow (10) in the feeding neck (3) is directed (9) discharge. The apparatus of claim 1, wherein the cleaning head (5) is rotatably mounted about a vertical axis of rotation (11), wherein the mouthpiece (9) is disposed on the cleaning head (5) at a radial distance, and wherein The cleaning head (5) comprises a rotatable connection (12) for a gas supply line, the connection being arranged in the rotating shaft (11). The device of claim 1 or 2, wherein the cleaning head (5) comprises a hollow body, wherein the hollow body is connected to the gas supply line (13) by a rotatable connection, and wherein the cleaning head (5) faces A plurality of blowing nozzles (9) are disposed on the outer surface of the feed furnace neck (3), and the plurality of blowing nozzles (9) communicate with the inner space of the hollow body receiving the gas on the rear side. The device of claim 2 or 3, wherein the mouthpieces (9) are interchangeably and/or rotatably disposed in a holding fixture of the cleaning head (5). The apparatus of claim 3 or 4, wherein an additional mouthpiece (14) is provided on the cleaning tool (8), the additional mouthpiece being in communication with the interior space of the hollow body receiving gas on the rear side, wherein The air stream discharged from the additional nozzles (14) is directed to the cleaning tool (8) or the seating surface of the feed aperture frame (2) which is acted upon by the cleaning tools (8). The apparatus of claim 1, wherein the air blowing configuration comprises a blowing head (16) fixedly disposed with the at least one blowing nozzle (9), and wherein the cleaning head (5) is configured to perform a rotational movement about the blowing head (16) The ring body. The apparatus of claim 6, wherein the blowing head (16) comprises a plurality of mouthpieces (9) oriented outwardly inclined, the plurality of mouthpieces (9) projecting from a lower side of the cleaning head (5). The device of claim 6 or 7, wherein the blowing head (16) is fixed to the carrier (4). The device of any one of claims 1 to 8, wherein the carrier (4) is suspended from the pendulum member. The apparatus of any one of claims 1 to 9, wherein the rotatably mounted cleaning head (5) comprises a roller bearing (6) that compensates the carrier (4) and the cleaning head ( 5) The tilt movement between.