Cleaning apparatus for a coke oven levelling door and window

Abstract

 The cleaning apparatus comprises a horizontal underframe (2) mounted on a pusher (1), an oblong frame (6) movable laterally along the coke oven door (30), a drive means (7, 8) mounted on the horizontal underframe (2) for moving the oblong frame (6), a carriage (13) movable toward and away from the coke oven door (30) and mounted on the oblong frame (6), a drive (14, 15) means for moving the carriage (13) a pressurized water injection device (26) having an injection nozzle (28) on its front end and connect- ' ed to a pressurized water supply pipe (25), and a lift means (20, 22, 23, 24) for moving the pressurized water injector device (26) up and down and mounted on the carriage (13). Thus, the pressurized water injection nozzle (28) can be easily brought just in front of the position to be cleaned and can be moved to any position to be cleaned by actuating the drive means (7, 8, 14, 15, 20, 22, 23, 24).

Description

[0001] The present invention relates to a cleaning apparatus for a levelling window, a knife edge and the vicinity thereof of a levelling door on a coke oven door. As well known, a coke oven door is provided on its upper portion with levelling window for levelling the coal charged in the coke oven chamber, and a levelling door having a knife edge is swingably mounted thereon to open and close the levelling window. However, if the levelling door is not satisfactorily closed, or the knife edge thereof does not tightly contact the front surface of the levelling window due to carbon and the like stuck on the levelling window, the knife edge and the vicinity thereof, there occurs gas leakage from the inside of the coke oven chamber.

[0002] The object of the present invention is to provide a cleaning apparatus, for cleaning a levelling window, a knife edge and the vicinity thereof of a levelling door on a coke oven door, which is capable of effectively cleaning these parts, by means of a pressurized water injection nozzle, on which the carbon and the like persistently stick.

[0003] The present invention is characterised in that the cleaning apparatus comprises a horizontal underframe mounted on a pusher which runs along the pusher side of a coke oven, an oblong frame movable laterally along the coke oven, a drive means for moving the oblong frame, mounted on the horizontal underframe, a carriage movable toward and away from the coke oven battery and mounted on the oblong frame, a drive means for moving the carriage, a pressurised water injection device having an injection nozzle on its front end and connected to a pressurised water supply pipe, and a lift means mounted on the carriage for moving the pressurised water injection device upwardly and downwardly. Thus, by placing the pressurised water injection nozzle just in front of the levelling window, the knife edge and the vicinity thereof with the drive means operated, the cleaning of these portions can be effectively performed.

[0004] Due to the above construction, the pressurised water injection nozzle can be positioned just in front of the levelling window, the knife edge and the vicinity thereof of the levelling door that has been swung aside from the front face of the levelling window, since the injection nozzle is mounted on the carriage, the carriage can be moved toward and away from the coke oven battery, the oblong frame can be moved along the pusher side, and the pressurised water injection device can be moved up and down. By the combination use of these drive means, not only the straight portions but also the corner portions where the front surface and the knife edge and its vicinity respectively have right angles can be followed well, thereby allowing these corner portions to be completely cleaned by the pressurised water injection nozzle.

[0005] In the drawings:

Figs. 1 to 3 are respectively side elevation, plan and front elevation of one embodiment

[0006] Referring now to the drawings, particularly to Figs. 1 and 3, there is illustrated a horizontal underframe 2 mounted on the upper surface of a coke pusher 1, and a horizontal frame 3 is mounted on the horizontal underframe 2. The horizontal frame 3 has, on both sides, see Fig. 2, angular rails 4, 4' for receiving an oblong frame 6 movable to and fro on wheels 5, 5'. The horizontal frame 3 is provided with a rotary shaft 7 mounted centrally and extending in longitudinal direction thereof. The rotary shaft 7 has a screw-thread (not shown) on its outer surface. A reversible motor 8 is mounted on the front of the horizontal frame 3 so as to rotate the rotary shaft 7. A screw-engaging member 9 is mounted on the lower surface of a bench plate 10 of the oblong frame 6 and engages through its tapped hole with the rotary shaft 7 so that the oblong frame 6 may be moved forward when the rotary shaft 7 is rotated, for example, clockwise by energising the reversible motor 8, while moved backward when rotated counterclockwise.

[0007] The oblong frame 6 comprises angular iails 11, 11' on which wheels 12, 12' of a carriage 13 ride. A reversible motor 14, for rotating a rotary shaft 15, is mounted on the oblong frame 6 as shown in Figs. 2, 3. The rotary shaft 15 also has a screw-thread (not shown) on its outer surface. A screw-engaging member 16 has a tapped hole which engages the rotary shaft 15 which is coupled to the reversible motor 14. The screw-engaging member 16 is arranged such that it causes the carriage 13 to move rightward in Figs. 2, 3 when the rotary shaft 15 is rotated, for example, clockwise

[0008] A support 17 is mounted upright on the carriage 13, and a fitting plate 18 is fixed at both sides thereof on the upper end of the support 17. A pair of rotary shafts 20, 20' are set between a gear box 19 of the carriage 13 and bearings 21, 21' provided at both sides on the front face of the fitting plate 18. The rotary shafts 20, 20' are also screw-threaded on their outer faces. Gears 22, 22' are respectively fixed on the lower ends of the rotary shafts 20, 20' as shown in Fig. 1. There is provided a reversible motor 23 to drive the gears 22, 22' through a drive gear 24 which is fixed to the drive shaft of the motor 23.

[0009] A pressurised water supply pipe 25 is connected to a pressurised water injection device 26 which has an injection nozzle 28 on its front end. The injection device 26 is supported on a fitting plate 26' as shown in Fig. 2. The fitting plate 26' is provided with a pair of screw-engaging members 27, 27' whose tapped holes respectively engage the rotary shafts 20, 20' so that the injection device 26 may be moved down together with the fitting plate 26' when the rotary shafts 20, 20' are rotated in one direction through the gears 22, 22' and 24 by energising the reversible motor 23, while moved up when rotated in the reverse direction.

[0010] In operation, whilst the levelling window 31 of the coke oven door 30 fitted on the mouth of the coke oven is opened, the oblong frame 6 is moved forward by energising the reversible motor 8 so that the pressurised water injection nozzle 28 may be positioned just in front of the levelling door frame 31'. Then, while feeding the pressurised water through the supply pipe 25 and injecting from the nozzle 28, the reversible motor 23 for vertical movement and the reversible motor 14 for the lateral movement are respectively energised forwardly or reversely so that. the nozzle 28 may be moved over the front of the levelling door frame 31' to crush and clean off the carbon and the like persistently stuck on the door frame 31'. Then, the nozzle 28 is moved to the front of the levelling door 32 which has been opened so that the knife edge 33 and the vicinity thereof may be cleaned by the pressurised water injected from the nozzle 28 in the same manner as described above.

[0011] After completion of the cleaning, the oblong frame 6 is moved back to let the nozzle 28 move away from the levelling door 32, thereby allowing the levelling door 32 to be rotated for closing the levelling window 31. Since the front face of the levelling door frame 31', the knife edge 33 and vicinity thereof of the levelling door 32 are cleaned completely as above, the levelling door 32 can contact closely the surface of the door frame 31' through the knife edge 33, and there can be prevented any gas leakage therethrough.

[0012] Since the pressurised water injection device 26 is supported, in the above embodiment, through the fitting plate 26' by the screw-engaging members 27, 27' which are respectively engaged with the rotary shafts 20, 20' in screw-pair relation, the injection device 26 can be moved up and down while maintaining always its horizontal condition, and further there can be installed the pressurised water injection nozzle 28 of relatively large size on the front of the injection device 260

[0013] Although the above embodiment uses the rotary shafts 7, 15, 20, 20', which can be rotated normally or reversely by energising the reversible motors 8, 14 and 23 respectively and the screw-engaging members 9, 16, 27, 27' which respectively engage these rotary shafts in order to effect all the movements from the forward and reverse movements of the oblong frame 6 to the vertical movements of the nozzle 28, it is alternatively possible to utilise hydraulic cylinder or gear train mechanisms in place of these devices.

[0014] As described above, the present invention provides such cleaning apparatus that can perform effective cleaning of the door frame, the knife edge and vicinity thereof of the levelling door.

Claims

1. A cleaning apparatus, for a levelling window (31),

a knife edge (33) and the vicinity thereof of a levelling door (32) on a coke oven door (30) characterised by

a horizontal underframe (2) mounted on a pusher (1) that runs along a pusher side of a coke oven door (30), an oblong frame (6) movable laterally of the coke oven,

a drive means (7, 8) provided on the horizontal underframe (2) for moving the oblong frame (6), a carriage (13) movable toward and away from the coke oven door (30) and mounted on the oblong frame (6), a drive means (14, 15) for moving the carriage (13), a pressurised water injection device (26) having an injection nozzle (28) on its front end and connected to a pressurised water supply pipe (25), and a lift means (20, 22, 23, 24) for moving the pressurised water injection device (26) up and down and mounted on the carriage (13) so that by bringing the pressurised water injection nozzle (28) just in front of the levelling window (31), the knife edge (73) and the vicinity thereof of the levelling door (32) on the coke oven door (30), there may be completely effected the cleaning thereof.

2. A cleaning apparatus according to Claim 1, characterised in that

said horizontal underframe(2) has a pair of angular rails (4, 4') on opposed sides on which wheels (5,5') of the oblong frame (6) ride, said oblong frame drive means (7, 8) comprises a reversible motor (8), a rotary shaft (7) coupled to the motor (8) and a screw-engaging member (9) engaging the rotary shaft (7).

3. A cleaning apparatus according to Claim 1 or
characterised in that
said carriage drive means (14, 15) comprises a reversible motor (14), a rotary shaft (15) coupled to the motor (14) and a screw-engaging member (16) engaging the rotary shaft (15).

4. A cleaning apparatus according to Claim 1, Claim 2 or Claim 3,
characterised in that,
said oblong frame (6) has a pair of angular rails (11, 11') on which wheels (12, 12') of the carriage (13) ride.

5. A cleaning apparatus according to any one of claims 1 to 4,
characterised in that,
said pressurised water injection device lift means (20, 22, 23, 24) comprises a reversible motor (23), a drive gear (24) coupled to the motor (23), a pair of driven gears (22, 22') engaging the drive gear (24), a pair of rotary shafts (20, 20') respectively coupled to the driven gears (22, 22'), a pair of screw-engaging members respectively engaging the rotary shafts (20, 20').

6. A cleaning apparatus according to Claim 1,
characterised in that,
each of said oblong frame drive means, said carriage drive means, and said pressurised water injection device lift means comprises a hydraulic cylinder mechanism.

7. A cleaning apparatus according to Claim 1,
characterised in that,
each of said oblong frame drive means, said carriage drive means, and said pressurised water injection device drive means is composed of a gear train mechanism.

Drawing