US3774258A

US3774258A - Apparatus for cleaning coke oven doors

Info

Publication number: US3774258A
Application number: US00188281A
Authority: US
Inventors: A Moreau
Original assignee: Individual
Current assignee: United States Steel Corp
Priority date: 1971-10-12
Filing date: 1971-10-12
Publication date: 1973-11-27
Anticipated expiration: 1990-11-27

Abstract

A door cleaning apparatus for removing deposits of carbon, tar, or the like from a coke oven door is disclosed. The coke oven door has a door frame, a plug on the oven side of the door frame and a sealing strip on the periphery of the door frame. The plug is provided with a tapered surface extending outwardly toward the door frame and defining a gas channel with the sealing strip on the periphery of the door frame. The door cleaning apparatus has a cleaner frame having a cleaner back plate and a cleaner side plate projecting from the cleaner back plate. The cleaner side plate and the cleaner back plate define a receiving cavity. Drive means are connected to either the cleaning apparatus or the oven door for causing relative reciprocating movement between the coke oven door and the cleaner frame between an aligned position where the coke oven door and the cleaner frame are aligned and a cleaning position where the cleaner frame receives the plug in the receiving cavity. A plug surface cutter means is mounted on the receiving cavity side of the cleaner side plate and has biasing means for biasing the plug surface cutter means inwardly toward the tapered surface of the plug. This drive means is operable to cause the plug surface cutter means to engage and move along the taper on the tapered surface of the plug to increase the biasing between the plug surface cutter means and the taper so that the plug surface cutter means removes the deleterious deposits from the tapered surface during the relative movement between the cleaner frame and the coke oven door.

Description

United States Patent [1 1 Moreau DOORS [76] Inventor: Albert T. Moreau, 91 Vermillion Dr., Levittown, Pa. 19054 [22] Filed: Oct. 12, 1971 [21] Appl. No: 188,281

Primary Examiner-Leon Machlin AttmeyRobert J. Leek, Jr.

[5 7] ABSTRACT A door cleaning apparatus for removing deposits of carbon, tar, or the like from a coke oven door is disclosed.

The coke oven door has a door frame, a plug on the APPARATUS FOR CLEANING COKE OVEN V Nov. 27, 1973 oven side of the door frame and a sealing strip on the periphery of the door frame. The plug is provided with a tapered surface extending outwardly toward the door frame and defining a gas channel with the sealing strip on the periphery of the doorframe. The door cleaning apparatus has a cleaner frame having a cleaner back plate and a cleaner side plate projecting from the cleaner back plate. The cleaner side plate and the cleaner back plate define a receiving cavity. Drive means are connected to either the cleaning apparatus or the oven door for causing relative reciprocating movement between the coke oven door and the cleaner frame between an aligned position where the coke oven door and the cleaner frame are aligned and a cleaning position where the cleaner frame receives the plug in the receiving cavity. A plug surface cutter means is mounted on the receiving cavity side of the cleaner side plate and has biasing means for biasing the plug surface cutter means inwardly toward the tapered surface of the plug. This drive means is operable to cause the plug surface cutter means toengage and move along the taper on the tapered surface of the plug to increase the biasing between the plug surface cutter means and the taper so that the plug surface cutter means removes the deleterious deposits from the tapered surface during the relative movement between the cleaner frame and the coke oven door.

18 Claims, 29 Drawing Figures a4 I 86 I l\\\\\\\\\\\\\ v /84 78 50a 50b 5 75 64 64 Q 2 94 62 52 62 8 3 96 9/ 53 i: 94. 7 92 R g 95 M697 2 5 50 58 5' f e 74 M30 :97L 70 70 72 l i 7? a 32 67 7 V 82 8 Sheets-Sheet 1 j kl:

Pafented Nov. 27

Patented Nov. 27, 1973 3,774,258

8 Sheets-Sheet 2 Fla 3 ALBERT 7. MOREAU Attorney Patented Nov. 27, 1973 3,774,258

8 Sheets-Sheet 5 FIG 5 INVENTOR AL amr r. MOREAU A Morn ey Patented Nov. 27, 1973 3,774,258

8 Sheets-Sheet 5 FIG 9v FIG /0 By I I A omey l i A ALBERT r MORE/1U Patented Nov. 27, 1973 3,774,258

8 Sheets-Sheet 6 F/GI /3A FIG. I30

lNl/E/VTUR AL BERT 7.' MOREAU A Ho may Patented Nov. 27, 1973 3,774,258

8 Sheets-Sheet 7 FIG. /4 FIG: /5

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AI/orney r APPARATUS FOR CLEANING COKE OVEN DOORS BACKGROUND OF THE INVENTION Doors for by-product coke ovens are massive and are much longer (about 12 feet) than they are wide (approximately 1 foot 8 inches). These doors have massive insulating refractory plugs which protrude (approximately 10 inches) from the main sealing surface. The plugs protect the steel portion of the door from the intense heat of the inner oven and also increase coking efficiency by reducing heat losses. A stainless steel sealing strip on the coke oven door contacts a machined surface at the door jamb on the oven to provide the necessary gas tight seal on the oven, thereby keeping air out and produced gases in. The plug forms a long rectangle with square corners, and a gas channel (defined by the plug and sealing strip) forms a slightly larger rectangle with rounded comers.

A coke oven door has a frame, stainless steel sealing strip, diaphragm, adjusting screws, and a refractory plug. The plug may be built up with individual bricks or fabricated of cast refractory sections. The adjusting screws are used to correct for warpage of the door due to excessive and extensive heating thereby insuring that the sealing edge lies in a plane and makes good contact with a machined surface on the door jamb. The doors are removed from the ovens by means of a door machine to permit the pushing out of the coke. The door machine grasps the door by means of hooks, turns the latches, pulls the door out of position in the oven and rotates the door into an aligned position for cleaning.

, Carbon builds up on the side of the door plug, and carbon and tar accumulate in the gas channel. These deposits must be cleaned off the door: (1) to maintain clearance tolerances so that the door can be put back onto the oven; (2) to allow migration of gas produced in the coking process through the gas channel; (3) to allow gas migration along the gas channel to the top of the ovens and out of the ovens; and (4) to allow the seal to be made between the stainless steel sealing strip and the machined jamb on the oven.

The two surfaces to be cleaned are the side of the plug and the gas channel and these two surfaces are perpendicular to each other.

At present, coke oven doors are cleaned through the use of manual labor. A workman uses a suitable length of rod with a blade on the end to scrape off the carbon and tar.

I am aware of the following prior art patents:

U.S. Pat. No. Inventor Issued Class 1,759,014 McIntosh 5/20/30 1,759,015 McIntosh 5/20/30 1,916,021 Sheri-ill et a1. 6/27/33 2,293,434 Giese, Jr. 8/18/42 202/248 2,746,610 Henseleit 5/22/56 212/4 2,986,758 Randell et a1. 6/6/61 15/93 3,037,227 Randell et a1. 6/5/62 15/93 3,056,699 Randell et a1. 10/2/62 134/5 3,115,655 Bowman 12/31/63 /93 3,120,668 Cook et a1. 2/11/64 15/21 3,220,038 Balitsky et a1. 11/30/65 15121 3,464,074 Stanke et al. 9/2/69 15/93 3,543,322 Stanke et 21. 12/1/70 15/93 OBJECTS OF THE PRESENT INVENTION The objects of the present invention are to overcome the objections to and deficiencies in the prior art manual cleaning of coke oven doors by the provision of an improved door cleaning apparatus which:

a. can be readily mounted on the door removal ma chine;

b. cleans the coke oven door in about a few seconds;

c. automatically cleans the tapered surfaces of the door plug, the gas channel and the corners of the gas channel in one operation;

d. automatically cleans the junction line between the tapered surfaces of the plug and the gas channel;

e. is simple and rugged in structure and provides long maintenance free operational life;

f. utilizes segmented cutter blades to satisfactorily clean irregular surfaces on the coke oven door caused by heat warpage of the coke oven door, repairs to the coke oven door, and the rebuilding of the coke oven door;

g. provides simultaneous complete cleaning of the tapered surfaces of the door plug, the gas channel and the corners'of the gas channel at the end of the relative movement between the cleaning apparatus and the coke oven door; and

h. utilizes a single force, the relative movement between the coke oven door and the cleaning apparatus, to accomplish all cleaning operations on the coke oven door.

BRIEF SUMMARY OF THE INVENTION The aforesaid objects of this invention and other objects which will become apparent as the description proceeds are achieved by providing an improved door cleaning apparatus for removing deposits of carbon, tar, and the like from a coke oven door. The coke oven h door has a door frame, a plug on the oven side of the door frame, and a sealing strip on the periphery of the door frame. The plug is provided with a tapered surface having a taper extending outwardly toward the door frame and defining a gas channel with the sealing strip on the periphery of the door frame. The door cleaning apparatus has a cleaner frame having a cleaner back plate and a cleaner side plate projecting from the back plate. The cleaner side plate and cleaner back plate define a receiving cavity. Drive means are connected to either the cleaning apparatus or the oven door to cause relative reciprocating movement between the coke oven door and the cleaner frame between an aligned position where the coke oven door and the cleaner frame are aligned and a cleaning position where the cleaner frame receives the plug in the receiving cavity. A plug surface cutter means is mounted on the receiving cavity side of the cleaner side plate and has biasing means for biasing the plug surface cutter means inwardly toward the tapered surface of the plug. This drive means is operable to cause the plug surface cutter means to engage and move along the taper on the tapered surface of the plug to increase the biasing between the plug surface cutter means and the taper so that the plug surface cutter means removes the deleterious deposits from the tapered surface during the relative movement between the cleaner frame and the coke oven door.

BRIEF DESCRIPTION OF THE VIEWS IN THE DRAWINGS Referring now to the drawings wherein like numerals in theseveral views indicate similar parts: 7

FIG. 1 is a-front elevational view of a coke oven door and-oven frame showing the alignment guides and the latches in engagement with the oven frame;

FIG. 2 is a vertical sectional view of the coke oven door and oven frame taken along the line 2-2 of FIG. 1 in the direction of the arrows;

FIG. 3 is a horizontal sectional view taken along the line 33 of FIG. 2 in the direction of the arrows;

FIG. 4 is a rear elevational view of the coke oven door shown in FIG. 1 showing the tapered plug, the door frame, the peripheral sealing strip, and the gas channel;

FIG. 5 is a diagrammatic plan view, on a smaller scale than FIG. 6 of the door cleaning apparatus and the door removal apparatus showing the coke oven door being moved into position into alignment with the door cleaning apparatus;

FIG. 6 is a side elevational view of the door cleaning apparatus, the aligned coke oven door and the door removal apparatus;

FIG. 7 is a fragmentary side elevational view of the upper portion of the door cleaning apparatus shown in FIG. 6 showing the upper guide wheel, top gas channel cleaning device, the upper left corner cleaning device, as viewed in FIG. 4, and the left-hand plug cleaning device as viewed in FIG. 4 and taken along the line 77 of FIG. 8 in the direction of the arrows;

FIG. 8 is a horizontal sectional view of the plug cleaning device and the gas channel cleaning device;

FIG. 9 is an enlarged side elevational view of the pivotable cutter blade of the gas channel cleaning device shown in FIG. 7;

FIG. 10 is a side elevational view of the L-shaped plates, adjustment nut on such L-shaped plates and cutter blade associated with the gas channel cleaning device shown in FIG. 7;

FIG. 1 1 is a side elevational view showing the stationary rotation nut, shown in section with respect to the rotating means for the corner cleaning device;

FIG. 12 is a fragmentary enlarged view taken along a line similar to the line 12-12 of FIG. 4 in the direction of the arrows and showing the cooperative operation of the plug cleaning device, the gas channel cleaning device, and the corner cleaning device;

FIGS. 13A-13D are diagrammatic side elevational views showing the cooperative operation of the plug cleaning device and the gas channel cleaning device;

FIG. 14 is a fragmentary side elevational view of an alternative embodiment of the biasing means for the plug cleaner showing a fastener and link means;

FIG. 15 is a view similar to FIG. 14 of another embodiment of the biasing means for the plug cleaner showing a plurality of wedges and guides;

FIG. 16 is a view similar to FIGS. 14,15 showing a fluid cylinder as a biasing means for the plug cleaner device;

FIG. 17 is a view similar to FIGS. 14-16 showing a solenoid as an alternative form of the biasing means for the plug cleaning device;

FIG. 18 is a view similar to FIGS. 14-17 showing a spring as a biasing means for the plug cleaner device;

FIG. 19 is a fragmentary enlarged sectional view of the second biasing means or tensioning device for the gas channel cleaner device;

FIG. 20 is a view similar to FIG. 19 of a fluid cylinder as a second biasing means for the gas channel cleaning device;

FIG. 21 is a fragmentary enlarged side elevational view of the positioning means for the gas channel cleaning device showing a solenoid;

FIG. 22 is a view similar to FIG. 21 of an alternative positioning means for the gas channel cleaning device showing a fluid cylinder;

FIG. 23 is a fragmentary enlarged side elevational view of an alternative embodiment of the tensioning means for the comer cleaning device showing it as a shock absorber;

FIG. 24 is a view similar to FIG. 23 of another alternative embodiment of the tensioning means for the corner cleaning device showing it as a fluid cylinder;

FIG. 25 is a fragmentary enlarged view of the altemative embodiment of the rotating means for the corner cleaning device showing it as a solenoid; and

FIG. 26 is a view similar to FIG. 25 of another embodiment of the rotating means for the corner cleaning device showing it as a reversing motor.

Although the principles of this invention are broadly applicable to the cleaning of deleterious deposits, such as carbon, tar, and the like, from an operating member, this invention is particularly adapted for use in conjunction with the removal of such deposits from a coke oven door and hence it has been so illustrated and will be so described.

DETAILED DESCRIPTION With specific reference to the form of this invention illustrated in the drawings and referring particularly to FIGS. 1-8, 13A-13D, a coke oven door is indicated generally by the reference numeral 10. This coke oven door 10 has a door frame 12 (FIGS. 14,6,8), a refractory plug 14 (FIGS. 1,2,3,4,7,8,13A-13D) on one side of the door frame 12 (in this case, the oven side) and the refractory plug 14 has a tapered surface 16 (FIGS. 2,3,4,8,13Al3D). The taper on the tapered surface 16 extends outwardly toward the door frame 12 and defines a gas channel 18 (FIGS. 3,4,7,8,13A13D) with a metallic periphery sealing strip 20 (FIGS. 3,4,7,8,13A13D) on the periphery of the door frame 12.

As shown in FIGS. l-4, the coke oven door 10 is provided with oscillatable latches 22 (FIGS. 1,2,3) and opposed guides 24 (FIGS. 1,2) for mounting the coke oven door 10 on a door jamb 26 (FIG. 3) of an oven 28 (FIG. 3). As shown particularly in FIG. 1, the latches 22 are engaged in clips 30 (FIGS. l-3) on the door jamb 26 of the oven 28 and the guides 24 comprise, for example, on the top a male member 32a (FIGS. 1,2) extending from the door frame 12 into a slotted female member 340 (FIGS. 1,2) on the door jamb 26. At the bottom, a female member 34b (FIGS, 1,2) extends from the door frame 12 about a male member 32b (FIGS. 1,2) mounted on the door jamb 26.

It will be understood from a consideration of FIGS. 1-4 that the peripheral sealing strip 20 engages a machined surface 36 (FIG. 3) on the door jamb 26 to seal the coke oven door 10 to the oven 28.

Referring now to FIGS. 5 and 6, the coke oven door 10 may be removed from the oven 28 by a door removal apparatus 38 of the type shown in the following US. patents.

Koppers Co., Inc.

2,784,849 3/l2/57 Gilliott 2,796,995 6/25/57 VanAckeren Koppers Co., Inc.

et al.

2,807,372 9/24/57 Henseleit Koppers Co., Inc.

2,972,422 2/21/61 Stone National Steel Corp.

Such apparatus 38 is movable into position on wheels 40 (FIG. 6) in engagement with tracks 42 (FIG. 6) in front of the oven 28 whereupon the door removal apparatus 38 engages the latches 22, moves the latches 22 to the open position shown in the dotted lines of FIG. 1 and while supporting the door 10, moves it 90 as shown in FIG. into alignment with the door cleaning apparatus 44 (FIGS. 5,6,7,8) of the present invention.

DOOR CLEANING APPARATUS 44 This door cleaning apparatus 44 has a cleaner frame 46 (FIGS. 7,8) which is provided with a cleaner back plate 48 (FIG. 8), cleaner side plates 50a and 50b (FIG. 8) and end plates 50c (FIGS. 7,8). These cleaner side plates 50a and 50b and thecleaner back plate 48 define a receiving cavity 52 (FIG. 8).

Drive means such as the cylinders 54 (FIGS. 5 and 6) extend from the frame 56 (FIG. 6) of the door removal apparatus 38 to the cleaner frame 46 of the door cleaning apparatus 44. It will be understood that such drive means or cylinders 54 (FIGS. 5,6) may be connected to either one of the door cleaning apparatus 44 or the coke oven door for causing relative reciprocating movement between the coke oven door 10 and the cleaner frame 46 between an aligned position shown in FIG. 8 where the coke oven door 10 and the cleaner frame 46 are aligned and a cleaning position (FIGS. 13B13D) where the cleaner frame 46 receives the plug 14 of the door 10 in the receiving cavity 52.

PLUG SURFACE CUI IER MEANS 58 Plug surface cutter means 58 (FIGS. 6,8,13A-13D) are mounted on the receiving cavity side of the cleaner side plates 50a and 50b. Such plug cutter surface means 58 have a plate 60 (FIGS. 8,l3A-13D) secured in the slot 62 (FIG. 8) in the mounting plate 64 (FIG. 8) secured to the side wall of a cleaner side plate 50a or 50b. Biasing means such as a fulcrum plate 66 or the like (FIGS. 8,13A-13D) biases a plug cutter 67 (FIGS. 8,13A-l3D) on the plate 60 of the plug surface cutter means 58 inwardly toward the tapered surface 16 of the plug 14 on the coke oven door 10.

The drive means 54 (FIGS. 5,6) are operable to cause the plug cutter 67 of the plug surface cutter means 58 to engage and move along the taper on the tapered surface 16 of the plug 14 to increase the biasing between the plug cutter 67 of the plug surface cutter means 58 and the tapered surface 16 so that the plug cutter 67 of the plug surface cutter means 58 removes the deleterious deposits 9 (FIGS. 7,8,13A-13C) from the tapered surface 16 during the relative movement between the cleaner frame 46 and the coke oven door 10 as shown particularly in FIGS. l3Al3D.

ALTERNATIVE EMBODIMENTS Gas Channel Cleaner Means 68 It will be recognized by those skilled in the art that alternatively as shown in FIGS. 6,7,8,13A-13D, the door cleaning apparatus 44 has a gas channel cleaner means 68 which is mounted as hereinafter described for pivotable movement on the outside of each cleaner side plate 50a,50b in registry with the gas channel l8.

As shown particularly in FIGS. 7,8,ll3A-13D, each gas channel cleaning means 68 has a generally L-shaped plate70 (FIGS. 710,13A-l3D) pivoted on a mounting member 72 (FIGS. 8,13A-13D) at 74. The mounting plate 72 projects from the outside of the cleaner side plate 500, for example. The free end of the plate 70 carries a generally S-shaped cutter blade 76 (FIGS. 7-10,13A-l3D). For the purpose of biasing said gas channel cleaning means 68 against the gas channel 18 during the relative reciprocating movement between the cleaner frame 46 and the coke oven door 10 and the pivotable movement of the gas channel cleaning means 68, a second biasing means 78 (FIG. 8) is employed.

This biasing means 78 has a rod 80 (FIGS. 7,8) extending from pivotable connections 82 (FIGS. 7,8,13A-13C) with the plate. 70 upwardly through a guide slot 84 (FIGS. 7,8) in a bracket 86 (FIGS. 7,8) projecting from the upper portions of the cleaner side wall 50a, and a biasing spring 88 (FIGS. 7,8) extends between the guide bracket 86 and a stop such as a washer 91 and nut 92 or the like (FIGS. 7,8) secured on threads 93 (FIGS. 7,8) on the rod 80. It will be understood that the spring 88, washer 91, nut 92, and threads 93 provide the adjustable tensioning or second biasing means 78 for the gas channel cleaning means 68. In order to position the cutter blade 76 of the gas channel cleaning means 68 with respect to the gas channel 18, a positioning means 94 (FIG. 8) is employed. This positioning means 94 is shown in FIGS. 7 and 8 and has a movable member, such as a screw 95 or the like (FIGS. 7,8) movable with respect to a fixed threaded member, such as a nut 96 or the like (FIG. 8), on the upper most portions of the plate 70, which screw 95 is engageable with a stop 97 (FIG. 8) upstanding from the mounting member 72 of the gas channel cleaning means 68.

The second biasing means 78 connected to the gas channel cleaning means 68 biases the gas channel cleaning means 68 (against the stop 97 until the gas channel cleaning means 68 engages the gas channel 18) to position it relative to the gas channel 18 and biases thereafter such gas channel cleaning means 68 against the gas channel 18 during the relative movement be tween the cleaner frame 46 and the coke oven door 10 and also during the pivotable movement of the gas channel cleaning cutter plate 70 to cause the gas channel cutter blade 76 to move across the gas channel 18 as shown in FIGS. BA-13D and remove the deleterious deposits 9 (FIGS. 7,8,13A-13D) by. the above described relative movement between the cleaner frame 46 and the coke oven door 10 as the gas channel Comer Cleaning Device 98 For the purpose of cleaning a corner of the gas channel 18 which is not reachable by the plug surface cutter means 58 either at the top, bottom, or both sides thereof, a comer cleaner device 98 (FIG. 7) is used. This comer cleaner device 98 (FIG. 7) has a rod 99 (FIGS. 7,11,12) extending through the cleaner frame 46 and carrying a corner cleaner blade 101) (FIGS. 7,11,12) on its outer end, which blade 100 is engage able with a corner to be cleaned of the deleterious deposits 9. This rod 99 is rotatable and reciprocably mounted in the cleaner frame 46 and extends outwardly from the top end, as viewed in FIG. 7, of the cleaner frame 46 and terminates in a washer 101 (FIG. 7) which washer 101 is attached as by welding or the like at 101a to a nut 102 (FIG. 7) on thethreaded end 103 (FIG. 7) of the rod 99. A spring 104 (FIG. 7) is also attached, as by welding or the like, at 101a to the washer 102 at its upper end as viewed in FIG. 7, and at its lower end (as viewed in FIG. 7) at 101a to the frame 46. Such combination forming a tensioning device 100a (FIG. 7) for the corner cleaner device 98. This tensioning device 100a (FIG. 7) associated with the corner cleaner blade 100 biases the blade 100 against the corner of the gas channel 18 which is to be cleaned. A rotating means 105 (FIGS. 7,11) is utilized for rotating the blade 100 across the corner while such blade 100 is in contact with the comer from the position shown along line CC to the position shown along line A-A (FIG. 12).

This rotating means 105 comprises in the embodiment of FIGS. 7 and 11 a long-pitched thread 106 (FIGS. 7,11) on the rod 100 engageable with a similarly threaded stationary nut 107 (FIGS. 7,11) on the cleaner frame 46.

FIG. 14 shows an alternative embodiment of the biasing means 59 for the plug cleaning device or plug surface cutter means 58. Such biasing means in FIG. 14 includes a bolt 108 threaded through threaded hole 109 in the cleaner side plate 50a and resting against the plate 60. After the biasing distance D B has been set, a lock nut 110 is secured against the side of the cleaner side plate 50a" to maintain the desired biasing distance D,,.

FIG. shows another form of the biasing means 59 and includes a pair of guides 111a,111b mounted respectively on the side walls of the plate 60 and the cleaner side plate 50a. A pair of wedges 112a,112b are inserted between the guides 11la,111b against the action of a retaining spring 113.

FIG. 16 shows a biasing means 59 having a fluid cylinder 1 14 the piston 115 of which engages a socket 1 16 in the plate 60. The fluid piston 115 is mounted on a cleaner side plate 50a as by welds 117 or the like.

FIG. 17 shows yet another form of the biasing means 59 for the plug cleaning device 58 where a solenoid 1 18 mounted as by welds 119 or the like, on the cleaner side plate 50a has its piston 119a engaged in a socket 120 on the plate 60". A suitable switch 12]. connects the solenoid 118 to a suitable AC supply indicated by the legend From AC Supply.

In FIG. 18, the biasing means 59 has a pair of telescoping rods 122,123 mounted, as by welds 124 or the like, respectively on the plate 60 and the cleaner side plate 50a". A suitable spring 125 extends about the rods 122,123 between the plates 60 and the cleaner side plate 50a".

In FIG. 19, an alternative tensioning or second biasing means 78" for a gas channel cleaning device 68" has a piston 126 of a shock absorber 127 pivoted at 128" on the bracket 86 projecting from the cleaner side plate 50a". The other side of the shock absorber 127 is connected by a rod 129 to the pivotable connection 82 with the L-shaped plate or arm 70.

In FIG. 20, a further embodiment of the tensioning means 78 has a piston 131) of a fluid cylinder 131 pivotably connected at the top at 128 and such fluid cylinder 131 is pivoted, as in the other embodiments, at 82 on the L-shaped plate at the bottom.

An alternative positioning means 94 (FIG. 21) for the gas channel cleaning device 68 has a solenoid 131 secured, as by welds 132 or the like, to the L-shaped plate 70 of the gas channel cleaning device 68 The operating rod 133 of the solenoid 131 engages a socket or guide 134 on the stop 97 upstanding from the mounting member 72.

In FIG. 22, another alternative form of the positioning means 94 for the gas channel cleaning device 68 has a fluid cylinder 135 secured, as by welds 136 or the like, to the L-shaped plate 70 and the piston 137 again engages a socket for guide 134 on the stop 97'.

In FIG. 23, the alternative tensioning means a for the corner cleaner device 98 utilizes a shock absorber 138 secured, as by welds 139 or the like, to the cleaner back plate 48 of the cleaner frame 46 and utilizes its shaft as the shaft or rod 99 for the corner cleaning device 98'.

FIG. 24 shows a further alternative tensioning means 10011 (for the corner cleaner device 98) which utilizes a fluid cylinder 104 having its piston employed as the shaft or rod 99 for the corner cleaning device 98'.

In FIG. 25, an alternative rotating means for a corner cleaning device 98 has a solenoid 141 mounted, as by welds 142 or the like, to the cleaner side plate 50a and the operating rod 143 of such solenoid 141 is suitably toothed in rack form to engage a pinion gear 144 on the shaft 99 of the corner cleaning device 98 The operating rod 143 is suitably guided by guides 145 affixed to the corner side plate 50a FIG. 26 shows yet another alternative embodiment of a rotating means 105" for a corner cleaning device 98 wherein a reversing motor 146 is mounted, by means of welds 147 or the like, to the corner side plate 500. The reversing motor 146 has its shaft integral with the shaft 99 for the corner cleaning device 98 It will be noted from a consideration of FIGS. 7 and 8 that the cleaner frame 46 may be provided with a vibrator 148 similar to a VIBROTOR Vibrator Type CCR 5500 manufactured by Martin Engineering Company, Neponset, Ill. 61345, to further aid the door cleaning apparatus 10 in removing the deleterious de posits 9 therefrom.

SUMMARY OF THE ACHIEVEMENTS OF THE OBJECTS OF THE PRESENT INVENTION It will be understood by those skilled in the art that the objects of the present invention have been achieved by providing an improved door cleaning apparatus 44 for removing carbon, tar 9, and the like from a coke oven door 10. This apparatus 44 can be readily mounted on an adjacent door removal machine 38; cleans the coke oven door 10 in substantially few seconds; automatically cleans the tapered surfaces 16 of the door plug 14, the gas channel 18, and the comers (FIG. 12) of the gas channel 18 in one operation; automatically cleans the junction line between the tapered surface 16 of the plug 14 and the gas channel 18; is simple and rugged in structure and provides a long maintenance-free operational life; utilizes segmented cutter blades 67 for the plug cleaning device 58, and segmented cutter blades 76 for the gas channel cleaning device 68 to satisfactorily clean irregular surfaces on the coke oven door 10 caused by: (a) heat warpage of such coke oven door 10, (b) repairs to the coke oven door 10, and (c) rebuilding of the coke oven door 10;

provides simultaneous complete cleaning of the tapered surface 16 of the door plug 14, the gas channel 18 and the corners (FIG. 12) of the gas channel 18 at the end of the relative movement between the cleaning apparatus 44 (i.e., the cleaner frame 46) and the coke oven door 10; and utilizes a single force; namely, the relative movement between the coke oven door 10 and the cleaning apparatus 44 to accomplish all cleaning operations on the coke oven door 10.

While in accordance with the patent statutes, preferred and alternative embodiments of this invention have been illustrated and described in detail, it is to be particularly understood that the invention is not limited thereto or thereby.

I claim:

1. A door cleaning apparatus for removing deposits of carbon, tar and the like from a coke oven door having a door frame, a plug on one side of said door frame and a sealing strip on the periphery of said door frame, said plug having a tapered surface having a taper extending outwardly toward said door frame and defining a gas channel with said sealing strip, said door cleaning apparatus having;

a. a cleaner frame having a cleaner back plate and a cleaner side plate projecting from said cleaner back plate;

' 1. said cleaner side plate and said cleaner back plate defining a receiving cavity;

b. drive means connected to one member of said cleaning apparatus and said coke oven door for causing relative reciprocating movement between said coke oven door and said cleaner frame between, an aligned position where said coke oven door and said cleaner frame are aligned and a cleaning position where said cleaner frame receives said plug in said receiving cavity; and a plug surface cutter means mounted on thereceiving cavity side of said cleaner side plate and having biasing means for biasing said plug surface cutter means inwardly toward said tapered surface of said p g;

. said drive means being operable to cause said plug surface cutter means to engage and move along said taper on said tapered surface of said plug to increase the biasing between said plug surface cutter means and said taper so that said plug surface cutter means removes said deleterious deposits from said tapered surface during said relative movement between said cleaner frame and said coke oven door;

. gas channel cleaning means mounted for pivotable movement on the outside of said cleaner side plate in registry with said gas channel; and

f. a second biasing means connected to said gas channel cleaning means for biasing said gas channel cleaning means against said gas channel during said relative movement between said cleaner frame and said coke oven door and said pivotable movement of said gas channel cleaning means to cause said gas channel cleaning means to move across said gas channel and remove said deposits from said gas channel when said relative movement causes said gas channel cleaner means to engage said gas channel.

2. The door cleaning apparatus recited in claim 1 wherein said gas channel cleaning means and said plug cleaning means make contact at the end of their movement to chip out said deposits from the junction line between said tapered surface of said plug and said gas channel.

3. A door cleaning apparatus for removing deposits of carbon, tar and the like from a coke oven door hav ing a door frame, a plug on one side of said door frame and a sealing strip on the periphery of said door frame, said plug having a tapered surface having a taper extending outwardly toward said door frame and defining a gas channel with said sealing strip, said door cleaning apparatus having:

a. a cleaner frame having a cleaner back plate and a cleaner side plate projecting; from said cleaner back plate;

1. said cleaner side plate and said cleaner back plate defining a receiving cavity;

b. drive means connected to one member of said cleaning apparatus and said coke oven door for causing relative reciprocating movement between said coke oven door and said cleaner frame between an aligned position where said coke oven door and said cleaner frame are aligned and a cleaning position where said cleaner frame receives said plug in said receiving cavity; and

. a plug surface cutter means mounted on the receiving cavity side of said cleaner side plate and having biasing means for biasing said plug surface cutter means inwardly toward said tapered surface of said P g;

. said drive means being operable to cause said plug surface cutter means to engage and move along said taper on said tapered surface of said plug to increase the biasing between said plug surface cutter means and said taper so that said plug surface cutter means removes said deleterious deposits from said tapered surface during said relative movement between said cleaner frame and said coke oven door; and

. a corner cleaning device in registry with a corner defined by intersecting portions of said gas channel, and having:

1. a blade rotatably and reciprocably mounted in said cleaner frame,

2. tensioning means associated with said blade for biasing said blade against said corner, and

3. rotating means associated with said blade for rotating said blade across said comer while said blade is in contact with said corner.

4. A door cleaning apparatus for removing deposits of carbon, tar and the like from a coke oven door having a door frame, a plug on one side of said door frame, said plug having a tapered surface having a taper extending outwardly toward said door frame and defining a gas channel with a sealing strip on the periphery of said door frame, said door cleaning apparatus having:

a. a cleaner frame having a cleaner back plate and a cleaner side plate projecting from said back plate; 1. said cleaner side plate and said cleaner back plate defining a receiving cavity;

b. gas channel cleaning means comprising a rigid plate-like scraper mounted for pivotable movement on the outside of said cleaner side plate in registry with said gas channel;

c. a biasing means Connected to said scraper for biasing said scraper against said gas channel during said relative movement between said cleaner frame and said coke oven door and said pivotable movement of said scraper to cause said scraper to move across said gas channel and remove said deposits from said gas channel when said relative movement causes said scraper to engage said gas channel.

5. A door cleaning apparatus for removing deposits of carbon, tar and the like from a coke oven door having a door frame, a plug on one side of said door frame, said plug having a taper extending outwardly toward said door frame and defining a gas channel with a sealing strip on the periphery of said door frame, said door cleaning apparatus having:

a. a cleaner frame having a cleaner back plate and a cleaner side plate projecting from said back plate, 1. said cleaner side plate and said cleaner back plate defining a plug receiving cavity,

b. a corner cleaning device in registry with a corner defined by two intersecting portions of said gas channel, and having:

1. a blade rotatably and reciprocably mounted in said cleaner frame,

3. rotating means associated with said blade for rotating said blade across said corner while said blade is in contact with said corner.

6. The door cleaning appratus recited in claim 4 wherein:

a. said biasing means is a spring.

7. The door cleaning apparatus recited in claim 4 wherein:

a. said biasing means is a shock absorber.

8. The door cleaning apparatus recited in claim 4 wherein:

a. said biasing means is a fluid cylinder.

9. The door cleaning apparatus device recited in claim 4 and having:

a. positioning means associated with said gas channel cleaning device for positioning said gas channel cleaning device in registry with said gas channel.

10. The door cleaning apparatus recited in claim 5 wherein said tensioning means is a spring.

11. The door cleaning apparatus recited in claim 5 wherein said tensioning means is a shock absorber.

12. The door cleaning apparatus recited in claim 5 wherein said tensioning means is a fluid cylinder.

13. The door cleaning apparatus recited in claim 5 having a second positioning means on said tensioning means.

14. The door cleaning apparatus recited in claim 5 wherein said rotating device is a stationary threaded sleeve on the cleaner frame and a threaded rod engageable with said stationary threaded sleeve.

15. The door cleaning apparatus recited in claim 5 wherein said rotating means is a solenoid.

16. The door cleaning apparatus recited in claim 5 wherein said rotating means is a reversing motor.

17. The door cleaning apparatus recited in claim 4 wherein said gas channel cleaning means is segmented.

18. The door cleaning apparatus recited in claim 4 and having vibratory means on said cleaner frame.

Claims

1. A door cleaning apparatus for removing deposits of carbon, tar and the like from a coke oven door having a door frame, a plug on one side of said door frame and a sealing strip on the periphery of said door frame, said plug having a tapered surface having a taper extending outwardly toward said door frame and defining a gas channel with said sealing strip, said door cleaning apparatus having; a. a cleaner frame having a cleaner back plate and a cleaner side plate projecting from said cleaner back plate; 1. said cleaner side plate and said cleaner back plate defining a receiving cavity; b. drive means connected to one member of said cleaning apparatus and said coke oven door for causing relative reciprocating movement between said coke oven door and said cleaner frame between an aligned position where said coke oven door and said cleaner frame are aligned and a cleaning position where said cleaner frame receives said plug in said receiving cavity; and c. a plug surface cutter means mounted on the receiving cavity side of said cleaner side plate and having biasing means for biasing said plug surface cutter means inwardly toward said tapered surface of said plug; d. said drive means being operable to cause said plug surface cutter means to engage and move along said taper on said tapered surface of said plug to increase the biasing between said plug surface cutter Means and said taper so that said plug surface cutter means removes said deleterious deposits from said tapered surface during said relative movement between said cleaner frame and said coke oven door; e. gas channel cleaning means mounted for pivotable movement on the outside of said cleaner side plate in registry with said gas channel; and f. a second biasing means connected to said gas channel cleaning means for biasing said gas channel cleaning means against said gas channel during said relative movement between said cleaner frame and said coke oven door and said pivotable movement of said gas channel cleaning means to cause said gas channel cleaning means to move across said gas channel and remove said deposits from said gas channel when said relative movement causes said gas channel cleaner means to engage said gas channel.

3. A door cleaning apparatus for removing deposits of carbon, tar and the like from a coke oven door having a door frame, a plug on one side of said door frame and a sealing strip on the periphery of said door frame, said plug having a tapered surface having a taper extending outwardly toward said door frame and defining a gas channel with said sealing strip, said door cleaning apparatus having: a. a cleaner frame having a cleaner back plate and a cleaner side plate projecting from said cleaner back plate;

4. A door cleaning apparatus for removing deposits of carbon, tar and the like from a coke oven door having a door frame, a plug on one side of said door frame, said plug having a tapered surface having a taper extending outwardly toward said door frame and defining a gas channel with a sealing strip on the periphery of said door frame, said door cleaning apparatus having: a. a cleaner frame having a cleaner back plate and a cleaner side plate projecting from said back plate;

5. A door cleaning apparatus for removing deposits of carbon, tar and the like from a coke oven door having a door frame, a plug on one side of said door frame, said plug having a taper extending outwardly toward said door frame and defining a gas channel with a sealing strip on the periphery of said door frame, said door cleaning apparatus having: a. a cleaner frame having a cleaner back plate and a cleaner side plate projecting from said back plate,

6. The door cleaning appratus recited in claim 4 wherein: a. said biasing means is a spring.

7. The door cleaning apparatus recited in claim 4 wherein: a. said biasing means is a shock absorber.

8. The door cleaning apparatus recited in claim 4 wherein: a. said biasing means is a fluid cylinder.

9. The door cleaning apparatus device recited in claim 4 and having: a. positioning means associated with said gas channel cleaning device for positioning said gas channel cleaning device in registry with said gas channel.