Small lid cleaning device, small lid cleaning method

Abstract

To provide a technology of a small lid washing device capable of thoroughly washing a small lid of a coke oven lid.SOLUTION: A small lid washing device 100 for washing a small lid 7 capable of opening and closing a small lid port 6 provided on a coke oven lid 1 comprises a small lid washing part 10 for injecting high-pressure water to the small lid 7 from the inside of a coke oven while the small lid 7 is closed.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a small lid cleaning device and a small lid cleaning method.

Background Art

[0002] A small lid cleaning device for cleaning the small lid of the furnace lid of a coke oven is known. The applicant has disclosed a small lid cleaning device in Patent Document 1. This device is a device for cleaning the small lid provided on the upper part of the furnace lid in order to insert a level into the carbonization chamber of the coke oven, and includes a small lid opening / closing means for opening and closing the small lid, and a water cleaning means for injecting high-pressure water from a nozzle portion toward the portion to be cleaned.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present inventors have obtained the following recognition about the small lid cleaning device. It is desirable to timely remove deposits such as tar and pitch from the small lid that closes the level insertion port provided in the furnace lid of the coke oven. The small lid cleaning device described in Patent Document 1 cleans the small lid in a state where the furnace lid is attached to the coke oven. This device is configured to open the small lid with a small lid opening / closing device for the furnace lid in a state where it is attached to the coke oven, clean the opened small lid with high-pressure water, and close the small lid after cleaning.

[0005] This small lid cleaning device stops in front of each of the lids of a large number of carbonization furnaces arranged in a predetermined direction in sequence, opens the small lid, and performs cleaning. This stop position is set according to the kiln pitch of the carbonization furnace with reference to a predetermined position. However, since the kiln pitch is not constant due to aging changes in the furnace body, etc., this stop position does not necessarily coincide with the center position of the small lid, and misalignment can occur. If the misalignment becomes large, the small lid cannot be opened or closed, and there may be a case where the small lid cannot be cleaned.

[0006] From these, the inventors recognized that there is room for improvement in the small lid cleaning device described in Patent Document 1 from the viewpoint of firmly cleaning the small lid.

[0007] The present invention has been made in view of such problems, and one of its purposes is to provide a technology for a small lid cleaning device capable of firmly cleaning the small lid of the coke oven lid.

Means for Solving the Problems

[0008] In order to solve the above problems, a small lid cleaning device according to an aspect of the present invention is a device for cleaning a small lid capable of opening and closing a small lid opening provided in a coke oven lid, and includes a small lid cleaning unit that injects high-pressure water from the inside of the furnace onto the small lid with the small lid closed.

[0009] Another aspect of the present invention is a small lid cleaning method. This method is a method for cleaning a small lid capable of opening and closing a small lid opening provided in a coke oven lid, and includes injecting high-pressure water from the inside of the furnace onto the small lid with the small lid closed.

[0010] In addition, any combination of the above components, or those obtained by mutually replacing the components and expressions of the present invention between methods, systems, etc. are also effective as aspects of the present invention.

Effects of the Invention

[0011] According to the present invention, it is possible to provide a technology for a small lid cleaning device capable of firmly cleaning the small lid of the coke oven lid.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0013] Hereinafter, the present disclosure will be described with reference to each drawing based on preferred embodiments. In the embodiments and modification examples, the same or equivalent components and members are denoted by the same reference numerals, and redundant explanations are omitted as appropriate. Also, the dimensions of the members in each drawing are appropriately enlarged or reduced for easy understanding. In addition, some of the members that are not important for explaining the embodiments in each drawing are omitted from the display.

[0014] Also, different components having common points are distinguished by attaching "first", "second", etc. at the beginning of the name, and these are omitted when collectively referred to. Terms including ordinals such as first and second are used to describe various components, but this term is used only for the purpose of distinguishing one component from another, and the components are not limited by this term.

[0015] [Embodiment] Hereinafter, with reference to FIG. 1, the small lid cleaning device 100 according to an embodiment of the present disclosure will be described. For the sake of convenience of explanation, as shown in the figure, the width direction of the furnace lid is defined as the X direction, the horizontal direction orthogonal to the X direction is defined as the Y direction, and the vertical direction orthogonal to both is defined as the Z direction. The X direction may be referred to as the left-right direction, the Y direction may be referred to as the front-back direction, and the Z direction may be referred to as the up-down direction. Such a notation of directions does not limit the posture of the small lid cleaning device 100, and the small lid cleaning device 100 can be used in any posture.

[0016] The small lid cleaning device 100 is a cleaning device for cleaning the small lid 7 that can open and close the small lid opening 6 provided in the furnace lid 1 of the coke oven 2. The furnace lid 1 is a structure that opens and closes the furnace opening 3 of the carbonization chamber of the coke oven 2. In particular, the small lid cleaning device 100 is used for the purpose of removing deposits such as dust and tar adhering to the small lid 7. When deposits such as dust and pitch accumulate, the airtightness decreases when the small lid 7 is closed, which may cause gas leakage to the outside of the furnace and inflow of outside air. Therefore, it is desirable to clean the small lid 7 in a timely manner. Hereinafter, for the sake of convenience, in the front-back direction, when mounted on the coke oven 2, the side facing the outside of the furnace lid 1 is referred to as the "outside of the furnace", and the opposite side is referred to as the "inside of the furnace".

[0017] As shown in FIG. 1, the furnace lid 1 has a furnace lid main body 4 that covers the front of the furnace opening 3 and a heat insulating portion 5 formed of bricks or the like. The furnace lid main body 4 is a wall-like portion extending in the left-right and up-down directions. The heat insulating portion 5 is provided in the left-right central region on the inside of the furnace of the furnace lid main body 4 and protrudes from the furnace lid main body 4 toward the inside of the furnace. Gas passages (not shown) and a knife edge NE (see FIGS. 2 and 3) for sealing the outer periphery of the furnace lid main body 4 are provided on both the left and right sides of the heat insulating portion 5 of the furnace lid main body 4.

[0018] As shown in FIG. 1, the small lid opening 6 is provided above the heat insulating portion 5 in the furnace lid main body 4 of the furnace lid 1. The small lid opening 6 has a cylindrical portion 60 that penetrates the furnace lid main body 4 of the furnace lid 1 in the front-back direction, a first opening 62 that is an opening on the outside of the furnace of the cylindrical portion 60, and a second opening 64 that is an opening on the inside of the furnace of the cylindrical portion 60. The second opening 64 faces the inside of the furnace when the furnace lid 1 is mounted on the coke oven 2.

[0019] In the example of FIG. 1, the cylindrical portion 60 has a substantially rectangular tubular shape with a through passage provided inside. A first opening 62 is provided in a portion of the cylindrical portion 60 protruding outside the furnace, and a second opening 64 is provided in a portion of the cylindrical portion 60 protruding inside the furnace. The small lid 7 is rotatably supported, for example, by a hinge mechanism 79 (see FIG. 3) provided on the side of the first opening 62 outside the furnace of the furnace lid body 4. By rotating, the small lid 7 has an open state in which the first opening 62 of the small lid opening 6 is opened and a closed state in which it is closed. In FIG. 1, the furnace lid 1 at the right end shows the small lid 7 in the open state, and the other furnace lids 1 show the small lid 7 in the closed state.

[0020] For example, in the open state, the small lid opening 6 can allow a leveling bar (not shown) for leveling the coke in the furnace to pass through. In this state, the coke in the furnace can be leveled by the leveling bar.

[0021] As described above, in the method of opening the small lid 7 and cleaning the small lid 7 with the furnace lid 1 attached to the furnace opening 3, there may be a case where the small lid 7 cannot be reliably cleaned. Therefore, in the present embodiment, as shown in FIG. 1, the small lid 7 is cleaned in a state where the furnace lid 1 removed from the furnace opening 3 is transferred to a position facing the small lid cleaning device 100. In particular, the small lid 7 is cleaned from the small lid opening 6 side in the closed state by the small lid cleaning unit 10.

[0022] As shown in FIG. 1, the small lid cleaning device 100 can be used as a set in combination with a furnace lid cleaning unit for cleaning the furnace lid 1. Therefore, it may be referred to as the small lid cleaning device 100 including the furnace lid cleaning unit. The furnace lid cleaning unit includes, for example, a cleaning unit for cleaning each of the upper surface, side surface, and lower surface of the furnace lid. In this example, the small lid cleaning unit 10 moves in conjunction with an upper cleaning unit 30 for cleaning the upper surface of the furnace lid 1. In particular, the upper cleaning unit 30 in this example cleans while moving left and right the upper portion 421 which is the upper side of the cylindrical portion 60 of the small lid opening 6 on the inner side surface 42 of the furnace lid body 4.

[0023] In the example of FIG. 1, the small lid cleaning unit 10 is combined with the upper cleaning unit 30, the left cleaning unit 32, the right cleaning unit 33, and the lower cleaning unit 34 to form an integrated small lid cleaning device 100. While moving up and down, the left cleaning unit 32 mainly cleans the left part 422 of the heat insulation part 5 on the left side (left side toward FIG. 1) of the inner side surface 42 of the furnace. While moving up and down, the right cleaning unit 33 mainly cleans the right part 423 of the heat insulation part 5 on the right side of the inner side surface 42 of the furnace. While moving left and right, the lower cleaning unit 34 mainly cleans the lower part 424 of the heat insulation part 5 on the lower side of the inner side surface 42 of the furnace.

[0024] The small lid cleaning unit 10, the upper cleaning unit 30, the left cleaning unit 32, the right cleaning unit 33, and the lower cleaning unit 34 are provided with injection nozzles for injecting high-pressure water. The injection nozzles inject high-pressure water while rotating the injection direction. High-pressure water pressurized by a high-pressure water pump or the like is supplied to the injection nozzles through pipes.

[0025] In addition, the left cleaning unit 32 and the right cleaning unit 33 have a rotary cutter 35 for removing deposits around the heat insulation part 5. The rotary cutter 35 may be referred to as a screw cutter.

[0026] FIG. 2 is a side view showing the schematic configuration of the small lid cleaning device 100. In this figure, for ease of understanding, the descriptions of the left cleaning unit 32, the right cleaning unit 33, and the lower cleaning unit 34 are omitted. The small lid cleaning device 100 includes a small lid cleaning unit 10, an upper cleaning unit 30, a support column 50, a first drive mechanism 51, a support base 52, a connecting part 53, a second drive mechanism 55, and an arm part 56.

[0027] The support column 50 functions as a framework for supporting the components of the upper cleaning unit 30 and the small lid cleaning unit 10. In FIG. 2, an example is shown where the support column 50 is a column extending vertically, but the support column 50 may be combined with various frames. The first drive mechanism 51 is a mechanism for moving the support base 52 in a predetermined direction. In this example, the first drive mechanism 51 is fixedly supported on the support column 50 and can move the support base 52 in the forward direction (the direction approaching the furnace lid 1), the rearward direction (the direction moving away from the furnace lid 1), and the left and right directions. As the drive source of the first drive mechanism 51, a pressure cylinder using hydraulic pressure, pneumatic pressure, etc., or an electric motor can be adopted.

[0028] The support base 52 is supported by the first drive mechanism 51 via a predetermined slider mechanism (not shown) so as to be slidable in the front-rear and left-right directions. The support base 52 is a base for supporting the small lid cleaning unit 10 and the upper cleaning unit 30. In this example, the support base 52 supports the upper cleaning unit 30 on the main body of the support base 52 and supports the small lid cleaning unit 10 below the upper cleaning unit 30. The support base 52 can move in the front-rear direction and the left-right direction based on the drive of the first drive mechanism 51.

[0029] The connecting part 53 is a mechanical element for connecting the support base 52 and the second drive mechanism 55. In this example, the connecting part 53 is a hanging body with the tip side located below the base end side. The base end side of the connecting part 53 is fixed to the support base 52, and the tip side is fixed to the second drive mechanism 55. The second drive mechanism 55 is a mechanism for moving the arm part 56 in a predetermined direction. In this example, the second drive mechanism 55 can move the arm part 56 in the front-rear direction. As the drive source of the second drive mechanism 55, a pressure cylinder using hydraulic pressure, pneumatic pressure, etc., or an electric motor can be adopted.

[0030] The arm part 56 is supported by the second drive mechanism 55 via a predetermined slider mechanism (not shown) so as to be slidable in the front-rear direction. The arm part 56 also functions as a base for supporting the small lid cleaning unit 10. The arm part 56 can move the small lid cleaning unit 10 in the front-rear direction based on the drive of the second drive mechanism 55.

[0031] Refer also to FIGS. 3 and 4. FIGS. 3 and 4 are plan views showing the schematic configuration of the small lid cleaning device 100. In these figures, for ease of understanding, the description of the upper cleaning unit 30 is omitted. In this figure, the inside of the cylindrical portion 60 of the small lid opening 6 is shown in a perspective view. FIG. 3 shows a state where the support base 52 has advanced and the arm portion 56 has retracted, and the small lid cleaning unit 10 is located outside the cylindrical portion 60 without entering the small lid opening 6. FIG. 4 shows a state where the support base 52 has advanced and the arm portion 56 has advanced, and the small lid cleaning unit 10 enters the small lid opening 6 and is located inside the cylindrical portion 60.

[0032] As shown in FIG. 3, the injection nozzles 12 of the left cleaning unit 32 and the right cleaning unit 33 extend in a direction inclined with respect to the front-rear direction so as to approach each other more toward the front side in plan view. The injection nozzles 12 of the small lid cleaning unit 10 extend in the front-rear direction in plan view. Each injection nozzle 12 injects high-pressure water in the extending direction. Although there is no limitation on the injection angle of each injection nozzle 12, in this example, it is set to 30° in plan view.

[0033] As shown in FIG. 3, in a state where the arm portion 56 has retracted, the front ends of the left cleaning unit 32 and the right cleaning unit 33 are located on the front side (the side closer to the furnace lid 1) than the front end of the small lid cleaning unit 10. In the state shown in FIG. 3, the left cleaning unit 32 and the right cleaning unit 33 move up and down while injecting high-pressure water WS3 and WS4 from the injection nozzles 12 to the left portion 422 and the right portion 423. The left cleaning unit 32 and the right cleaning unit 33 also clean the knife edge NE with the high-pressure water WS3 and WS4. Further, the rotary cutter 35 rotates while moving up and down in conjunction with the left cleaning unit 32 and the right cleaning unit 33 to remove the deposits on the side surface of the heat insulation portion 5.

[0034] The small lid cleaning unit 10 may inject high-pressure water WS1 when the left cleaning unit 32 and the right cleaning unit 33 are injecting high-pressure water WS3 and WS4, but in the example of FIG. 3, it does not inject. In this case, the supply capacity of the supply source for supplying high-pressure water can be made smaller than when both are injected.

[0035] As shown in FIG. 4, with the arm portion 56 advanced, the front ends of the left cleaning portion 32 and the right cleaning portion 33 are located on the rear side (the side farther from the furnace lid 1) than the front end of the small lid cleaning portion 10. In the state shown in FIG. 4, the left cleaning portion 32 and the right cleaning portion 33 stop the injection of the high-pressure water WS3 and WS4. In this example, the small lid cleaning portion 10 injects the high-pressure water WS1 when the left cleaning portion 32 and the right cleaning portion 33 are not injecting the high-pressure water WS3 and WS4. Note that when switching the injection of the high-pressure water in this way, there may be a period during which these high-pressure waters are injected overlappingly.

[0036] See also FIGS. 5, 6, and 7. FIGS. 5, 6, and 7 are side views showing the schematic configuration of the small lid cleaning device 100. In this figure, the inside of the cylindrical portion 60 of the small lid opening 6 is shown in a perspective view. FIGS. 5 and 7 show the state where the support base 52 has advanced and the arm portion 56 has retracted, and the small lid cleaning portion 10 is located outside the cylindrical portion 60 without entering the small lid opening 6. FIG. 6 shows the state where the support base 52 has advanced and the arm portion 56 has advanced, and the small lid cleaning portion 10 enters the small lid opening 6 and is located inside the cylindrical portion 60. Hereinafter, the state shown in FIG. 5 may be referred to as the first state, the state shown in FIG. 6 may be referred to as the second state, and the state shown in FIG. 7 may be referred to as the third state.

[0037] As shown in FIGS. 5 and 6, the small lid cleaning portion 10 has a plurality (two in this example) of injection nozzles 12. In this case, the cleaning range of the small lid cleaning portion 10 can be widened. The arrangement of the plurality of injection nozzles 12 is not particularly limited, but in this example, the plurality (two) of injection nozzles 12 are arranged side by side in the vertical direction, which is the longitudinal direction of the small lid 7. The cleaning range can be widened compared to the case of arranging them side by side in the short side direction.

[0038] As shown in FIG. 5, the injection nozzles 12 of the upper cleaning portion 30 extend in a direction inclined such that the front side is lowered with respect to the front-rear direction in a side view. The injection nozzles 12 of the small lid cleaning portion 10 extend in the front-rear direction in a side view. Each injection nozzle 12 injects high-pressure water in the extending direction. There is no limitation on the injection angle of each injection nozzle 12, but in this example, it is set to 30° in a side view.

[0039] As shown in FIGS. 5 and 7, in the first and third states where the arm portion 56 has retracted, the front end of the upper cleaning portion 30 is located in front of the front end of the small lid cleaning portion 10. As shown in FIG. 6, in the second state where the arm portion 56 has advanced, the front end of the upper cleaning portion 30 is located behind the front end of the small lid cleaning portion 10.

[0040] As shown in FIG. 5, in the first state, the upper cleaning portion 30 does not inject the high-pressure water WS2. The small lid cleaning portion 10 starts injecting the high-pressure water WS1 in the first state, gradually advances to reach the second state, maintains the second state for a predetermined time, and then gradually retracts from the second state to return to the first state. During this period, the small lid cleaning portion 10 continues to inject the high-pressure water WS1. In the first state, the high-pressure water WS1 of the small lid cleaning portion 10 is injected onto the inner wall of the cylindrical portion 60 and substantially the entire small lid 7. In this case, a wide range can be cleaned. In the second state, the high-pressure water WS1 of the small lid cleaning portion 10 is intensively injected near the center of the small lid 7. In this case, since the high-pressure water WS1 hits the small lid 7 with a strong force, the small lid 7 can be powerfully cleaned.

[0041] When the retraction is completed, the small lid cleaning portion 10 stops injecting the high-pressure water WS1. As shown in FIG. 6, the small lid cleaning portion 10 cleans the small lid 7 in a state where it protrudes in front of the front end of the upper cleaning portion 30. When the small lid cleaning portion 10 injects, the upper cleaning portion 30 stops injecting. Note that when switching the injection of the high-pressure water in this way, there may be a period during which these high-pressure waters are injected overlapped.

[0042] In the third state shown in FIG. 7, the upper cleaning portion 30 injects the high-pressure water WS2 from the injection nozzle 12 to the upper portion 421 while moving left and right. The upper cleaning portion 30 also cleans the knife edge NE with the high-pressure water WS2. In the third state, the high-pressure water WS1 may be injected, but in this example, it is not injected. In this case, the supply capacity of the supply source that supplies the high-pressure water can be made smaller than when both are injected. As shown in FIG. 7, the upper cleaning portion 30 cleans the furnace lid 1 in a state where the upper cleaning portion 30 protrudes in front of the front end of the small lid cleaning portion 10. When the upper cleaning portion 30 injects, the small lid cleaning portion 10 stops injecting. Note that when switching the injection of the high-pressure water in this way, there may be a period during which these high-pressure waters are injected overlapped.

[0043] The cleaning operation S110 of the small lid cleaning device 100 configured as described above will be described. FIG. 8 is a flowchart for explaining the cleaning operation S110.

[0044] When the cleaning operation S110 is started, the left cleaning unit 32 and the right cleaning unit 33 are advanced to a position sandwiching the heat insulation part 5 to clean the left part 422 and the right part 423 (step S111). In this step, the left cleaning unit 32 and the right cleaning unit 33 spray high-pressure water WS3 and WS4 from the injection nozzles 12 to the left part 422 and the right part 423 while moving up and down (FIG. 3). Also, in this step, the rotary cutter 35 rotates to remove the deposits on the side surface of the heat insulation part 5.

[0045] After cleaning the left part 422 and the right part 423, the support base 52 is advanced with the arm part 56 retracted to move the small lid cleaning part 10 and the upper cleaning part 30 to the positions in the first state (step S112). In this step, the small lid cleaning part 10 moves in conjunction with the upper cleaning part 30.

[0046] Next, as shown in FIG. 5, the injection of the high-pressure water WS1 from the injection nozzles 12 of the small lid cleaning part 10 is started (step S113).

[0047] Next, the small lid cleaning part 10 is advanced while injecting the high-pressure water WS1 (step S114). In this step, the small lid cleaning part 10 enters from the small lid opening 6 toward the small lid 7 side to clean the small lid 7.

[0048] As shown in FIG. 6, when the small lid cleaning part 10 is closest to the small lid 7, its position is maintained while injecting the high-pressure water WS1 (step S115). In this step, the small lid cleaning part 10 maintains the state of being closest to the small lid 7 for a predetermined period. This maintenance period is not particularly limited, but may be, for example, in the range of 1 second or more and 20 seconds or less. In this example, it is set in the range of 5 seconds or more and 15 seconds or less.

[0049] Next, the small lid cleaning part 10 is retracted while injecting the high-pressure water WS1 (step S116).

[0050] When the backward movement of the small lid cleaning unit 10 is completed, as shown in FIG. 7, the injection of the high-pressure water WS1 is stopped, and the upper cleaning unit 30 cleans the upper part 421 (step S117). In this step, the upper cleaning unit 30 injects the high-pressure water WS2 from the injection nozzle 12 to the upper part 421 while moving left and right.

[0051] When the upper part 421 is cleaned, the cleaning operation S110 ends. Each of the above steps is merely an example, and various modifications are possible.

[0052] The features of the small lid cleaning device 100 configured as described above will be described. The small lid cleaning device 100 is a device for cleaning the small lid 7 that can open and close the small lid opening 6 provided in the furnace lid 1 of the coke oven 2, and includes a small lid cleaning unit 10 that injects high-pressure water from the side of the small lid opening 6 to the small lid 7 with the small lid 7 closed.

[0053] According to this configuration, since high-pressure water is injected from the side of the small lid opening 6 to the small lid 7 with the small lid 7 closed, it is possible to provide a small lid cleaning device that can firmly clean the small lid 7 even if the kiln pitch changes due to aging changes in the furnace body or the like.

[0054] Note that the technology according to the present embodiment can be applied to a method for cleaning the small lid 7. This method is a method for cleaning the small lid 7 that can open and close the small lid opening 6 provided in the furnace lid 1 of the coke oven 2, and includes injecting high-pressure water from the side of the small lid opening 6 to the small lid 7 with the small lid 7 closed. According to this method, the same operations and effects as those of the small lid cleaning device 100 of the present embodiment can be achieved.

[0055] The examples of the embodiments of the present invention have been described in detail above. Each of the above-described embodiments is merely a specific example for implementing the present invention. The content of the embodiments does not limit the technical scope of the present invention, and many design changes such as changes, additions, and deletions of components are possible without departing from the idea of the invention defined in the claims. In the above-described embodiments, regarding the content that allows such design changes, explanations have been given with notations such as "in the embodiment" and "in the embodiment", but design changes are also allowed for the content without such notations.

[0056] The following describes modification examples. In the drawings and descriptions of the modification examples, the same or equivalent components and members as those in the embodiment are denoted by the same reference numerals. Descriptions overlapping with the embodiment are omitted as appropriate, and the configurations different from the embodiment are mainly described.

[0057] (Modification Example) In the description of the embodiment, an example was shown in which the left part 422 and the right part 423 are washed and then the small lid washing part 10 washes the small lid 7, but the washing order of each part can be arbitrarily set.

[0058] In the description of the embodiment, an example was shown in which the small lid washing device 100 is combined with the left washing part 32, the right washing part 33, and the lower washing part 34, but it is not essential to be combined with these washing parts.

[0059] In the description of the embodiment, an example was shown in which the small lid washing part 10 does not include a scraper, but the small lid washing part may include a scraper.

[0060] Each of the above modification examples has the same operations and effects as the embodiment.

[0061] Any combination of the components of the above-described embodiment and the modification examples is also useful as an embodiment of the present invention. The new embodiment resulting from the combination has the effects of the combined embodiment and modification example.

Description of Reference Numerals

[0062] 1 Furnace lid, 2 Coke oven, 6 Small lid opening, 7 Small lid, 10 Small lid washing part, 12 Injection nozzle, 30 Upper washing part, 62 First opening, 64 Second opening, 100 Small lid washing device.

Claims

1. An apparatus for cleaning a small lid that can open and close a small lid opening provided on a furnace lid of a coke oven, comprising: a small lid cleaning unit that injects high-pressure water from the inside of the furnace onto the small lid with the small lid closed; the small lid cleaning unit is a small lid cleaning device that moves in conjunction with a furnace lid cleaning unit for cleaning the furnace lid.

2. The small lid cleaning device according to claim 1, wherein the small lid cleaning unit has a plurality of injection nozzles for injecting high-pressure water.

3. The small lid cleaning device according to claim 2, wherein the plurality of injection nozzles are arranged side by side in the longitudinal direction of the small lid.

4. The small lid cleaning device according to any one of claims 1 to 3, wherein the small lid cleaning unit enters from the small lid opening to the small lid side to clean the small lid.

5. The small lid cleaning unit cleans the small lid in a state of protruding forward from the front end of the furnace lid cleaning unit, The small lid cleaning device according to any one of claims 1 to 4, wherein the furnace lid cleaning unit cleans the furnace lid in a state of protruding from the front end of the small lid cleaning unit.

6. When the small lid cleaning unit injects high-pressure water, the furnace lid cleaning unit stops injecting high-pressure water, The small lid cleaning device according to any one of claims 1 to 5, wherein when the furnace lid cleaning unit injects high-pressure water, the small lid cleaning unit stops injecting high-pressure water.

7. A method for cleaning a small lid that can open and close a small lid opening provided on a furnace lid of a coke oven, comprising: moving a small lid cleaning unit that injects high-pressure water from the inside of the furnace onto the small lid in conjunction with a furnace lid cleaning unit for cleaning the furnace lid; injecting high-pressure water from the inside of the furnace onto the small lid by the small lid cleaning unit with the small lid closed.

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