JP2024006659A - Tar pan cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tar pan cleaner capable of more surely removing tar on a tar pan.

SOLUTION: A tar pan cleaner 1 is disposed on a side of a blast furnace bottom 101 of a coke oven 100, and is intended to clean a tar pan 105 having an inclined shape whose height position becomes higher as coming closer to a throat part 103 of the coke oven 100. The tar pan cleaner includes: a scraper 63 configured to scrape up tar 200 on the tar pan 105 while moving in a front-back direction X as approaching and separating directions with respect to the throat part 103; and a spray nozzle 42 which is configured to be movable along a left-right direction Y as a width direction of the tart pan 105 with respect to the tar pan 105, and injects cleaning fluid F to the tar pan 105.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention provides a tar pan cleaner for removing tar attached to a tar pan provided at the lower part of a furnace lid frame installed on the front side (red-hot coke discharge side) or rear side (coal extrusion side) of a coke oven. Regarding.

Conventionally, in the carbonization chamber of a coke oven used to produce coke used in steelmaking in a blast furnace, gas containing tar components is generated during operation, and the generated gas is discharged from the furnace lid installed before and after the carbonization chamber. It leaks outside and is cooled. Therefore, the tar component in the gas turns into tar and adheres to the tar pan provided at the bottom of the furnace lid frame. Additionally, tar may fall directly from the furnace lid and adhere to the tar pan. The tar pan has a slope shape that slopes downward as it moves away from the furnace lid, but the high-temperature tar will adhere to the tar pan before it falls from the tar pan. Therefore, by installing a scraper on a vehicle (also called a moving machine) installed in a coke oven, such as a guide car, and moving the scraper from the upper side of the tar pan to the lower side, the tar attached to the tar pan can be removed from the tar pan. I'm letting you do it. Further, in addition to a scraper, the tar on the tar pan is peeled off from the tar pan with high-pressure fluid using a jet nozzle that jets fluid such as water, thereby causing the tar to fall from the tar pan (see, for example, Patent Document 1).

Japanese Patent Application Publication No. 2014-074084

However, in the configuration described in Patent Document 1, the injection nozzle is fixed to the scraper and can only inject high-pressure fluid to a part of the width direction of the scraper. For this reason, the high-pressure fluid from the injection nozzle cannot be injected into most of the tar pan, and there is room for improvement in the performance of dropping tar from the tar pan.

In view of the above background, an object of the present invention is to provide a tar pan cleaner that can more reliably remove tar on a tar pan.

The gist of the present invention is the following tarpa cleaner.

(1) A tar pan cleaner for cleaning an inclined tar pan that is arranged on the bottom side of a coke oven and whose height increases as it approaches the mouth of the coke oven,
a scraper configured to scrape an object on the tar pan while moving in a front-rear direction as a direction approaching and away from the furnace mouth;
an injection nozzle that is configured to be movable with respect to the tar pan along a left-right direction as a width direction of the tar pan, and that injects a cleaning liquid to the tar pan;
It is equipped with a tarpan cleaner.

(2) The tar pan cleaner according to (1), wherein the injection nozzle is configured to be movable independently of displacement of the scraper.

(3) a first movable table that moves the scraper in the front-back direction;
a second movable base that is supported by the first movable base to move in the front-back direction and supports the injection nozzle so as to be movable in the left-right direction;
The tar pan cleaner according to (2) above, further comprising:

(4) further comprising a supply pipe for supplying the cleaning liquid to the injection nozzle,
The supply pipe includes a first pipe installed on the first movable base and rising upward from the first movable base, and a second pipe installed on the second movable base and rising upward from the second movable base. , a flexible pipe connecting the first pipe and the second pipe. The tar pan cleaner according to (3) above.

(5) The tar pan cleaner according to (1), wherein the injection nozzle is disposed at a portion of the scraper that advances rearward from a portion of the scraper that scrapes the tar pan.

(6) The injection nozzle moves back and forth once in the left-right direction while injecting the cleaning liquid, moves by a predetermined amount in a direction away from the furnace opening in the front-back direction, and then injects the cleaning liquid again. The tar pan cleaner according to any one of (1) to (5) above, which is configured as follows.

According to the present invention, tar on a tar pan can be removed more reliably.

FIG. 1 is a plan view of a part of a tarpan cleaner and coke oven according to an embodiment of the present invention, showing the injection nozzle and scraper in both the rear end position and the front end position. FIG. 2 is a side view of the tar pan cleaner and part of the coke oven, showing the injection nozzle and scraper in both the rear and front positions. FIG. 3 is a front view of the tar pan cleaner, showing the tar pan cleaner viewed from the coke oven side, and showing the left and right slide units at both the right end position and the left end position. FIG. 4 is an enlarged view of a part of the plan view of FIG. FIG. 5 is a further enlarged view of a part of the plan view of FIG. FIG. 6 is a sectional view taken along line VI-VI in FIG. 5, and shows the state seen in the left-right direction. FIG. 7 is a block diagram for explaining the configuration related to control of the tar pan cleaner. FIG. 8 is a flowchart for explaining an example of the operation of the tar pan cleaner.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

FIG. 1 is a plan view showing a part of a tarpan cleaner 1 and a coke oven 100 according to an embodiment of the present invention, when the injection nozzle 42 and the scraper 63 are at the rear end position X1 and the front end position X2. It shows both. FIG. 2 is a side view showing the tar pan cleaner 1 and a part of the coke oven 100, showing the injection nozzle 42 and the scraper 63 at both the rear end position X1 and the front end position X2. FIG. 3 is a front view of the tar pan cleaner 1, showing the tar pan cleaner 1 viewed from the coke oven 100 side, and shows both when the left and right slide units 23 are at the right end position Y1 and the left end position Y2. Showing. FIG. 4 is an enlarged view of a part of the plan view of FIG. FIG. 5 is a further enlarged view of a part of the plan view of FIG. FIG. 6 is a sectional view taken along line VI-VI in FIG. 5, and shows the state seen in the left-right direction Y. In each figure, the portion after movement is shown by an imaginary chain double-dashed line.

In this specification, the direction (horizontal direction) in which the coke oven 100 approaches and separates from the oven mouth 103 is referred to as the front-rear direction X. In the longitudinal direction X, the direction toward the coke oven 100 side is referred to as the front, and the direction away from the coke oven 100 is referred to as the rear. Further, the width direction (horizontal direction) of the tar pan 105 of the coke oven 100 is referred to as the left-right direction Y. In the left-right direction Y, the right side when looking at the tarpan cleaner 1 from the coke oven 100 is called the right, and the left side is called the left. Further, the up and down direction along the vertical direction is referred to as the up-down direction Z. The front-rear direction X, the left-right direction Y, and the up-down direction Z are orthogonal to each other.

Referring to FIGS. 1 to 4, the tar pan cleaner 1 is provided to clean the tar pan 105 of the coke oven 100 by removing tar 200 attached to the tar pan 105 from the tar pan 105. Prior to explaining the tar pan cleaner 1, the configuration of the coke oven 100 will be explained.

The coke oven 100 is used to make coke from coal. Inside the coke oven 100, a large amount of coal is heated to approximately 1200° C. to 1300° C. for a predetermined period of time, thereby turning into coke. At this time, tar is produced in addition to coke. The coke oven 100 is formed, for example, in a box shape with an interior partitioned into multiple layers.

The coke oven 100 includes a furnace bottom 101, a vertical wall 102 rising from the furnace bottom 101, a furnace port 103 formed in the vertical wall 102, a furnace lid 104 installed in the furnace port 103, and a furnace port 103. and a tar pan 105 disposed below the furnace lid 104.

The hearth bottom 101 is a floor portion that forms the lower end of a storage chamber in the coke oven 100 in which coal (coke) is accommodated. A vertical wall 102 is arranged at one end of the hearth bottom 101 (the left end in FIG. 2).

The vertical wall 102 rises upward from the hearth bottom 101. A furnace mouth portion 103 is formed in the vertical wall 102 .

The furnace mouth part 103 is arranged above the upper part of the tar pan 105. For example, coke can be taken out from the coke oven 100 through the oven mouth 103 . The furnace opening 103 is opened and closed by a furnace lid 104.

The furnace lid 104 is arranged near the hearth bottom 101 and has a frame 106 protruding from the vertical wall 102. A tar pan 105 is arranged below the frame 106.

The tar pan 105 is a sloping part that is arranged on the bottom side of the coke oven 100 and increases in height as it approaches the oven mouth 103 of the coke oven 100. It is provided to guide tar 200 falling from inside the coke oven 100 to a conveyor 107 installed on the side of the coke oven 100. The tar 200 that has fallen onto the conveyor 107 is transported by the conveyor 107 to a predetermined collection location. In this embodiment, the tar pan 105 is connected to the vertical wall 102, and is formed in a slope shape that moves downward as it moves away from the hearth bottom 101 (as it moves backward). A portion of the upper side of the tar pan 105 is located below the furnace lid 104, while the remaining portion of the tar pan 105 is located behind the furnace lid 104. That is, in the upper part of the tar pan 105, a narrow space 108 is formed in which the tar pan 105 and the furnace lid 104 are arranged vertically.

The tar pan cleaner 1 is placed on a pedestal 2 and is movable in the left-right direction Y. Thereby, the tar pan cleaner 1 can individually clean a plurality of tar pans 105 provided in the coke oven 100.

The tar pan cleaner 1 includes a base 3 installed on a pedestal 2 and located at the rear of the tar pan cleaner 1, a longitudinal drive mechanism 4 supported by the base 3, and a movable unit 5 that moves in the longitudinal direction X by the longitudinal drive mechanism 4. and a scraper unit 6 supported by the movable unit 5.

The base 3 has a first base member 11 fixed to the pedestal 2 and elongated in the left-right direction Y, and a pair of left and right second base members 12, 12 fixed to the pedestal 2 and elongated in the front-rear direction X.

The first base member 11 and the pair of second base members 12, 12 are fixed to the pedestal 2 and are movable in the left-right direction Y together with the pedestal 2.

The first base member 11 is arranged between a pair of left and right second base members 12, 12. A longitudinal drive mechanism 4 is mounted on the first base member 11.

The pair of second base members 12, 12 are provided to support a pair of left and right movable rails 26, 26, which will be described later. A roller stand 13 is installed on each of the pair of second base members 12, 12, and the roller stand 13 supports a roller 14.

In this embodiment, the longitudinal drive mechanism 4 includes a hydraulic cylinder mechanism. The longitudinal drive mechanism 4 includes a cylinder 15 as a fixed part fixed to the first base member 11, and a rod 16 as a movable part that projects forward from the cylinder 15. Note that the longitudinal drive mechanism 4 may have any configuration as long as it can move the movable unit 5 in the longitudinal direction X, and may be a drive mechanism other than a fluid pressure cylinder. An example of such a drive mechanism is a rack and pinion mechanism that converts the output rotation of an electric motor or hydraulic motor installed on the first base member 11 into forward and backward movement of the movable unit 5. A movable unit 5 is arranged in front of the base 3 and the longitudinal drive mechanism 4 having the above configuration. The movable unit 5 is configured to be movable in the front-rear direction X.

The movable unit 5 is moved horizontally by a first movable base 21 that moves integrally with the rod 16 of the longitudinal drive mechanism 4 in the front-rear direction X, a left-right drive mechanism 22 supported by the first movable base 21, and It has a left and right slide unit 23 that moves in the Y direction.

The first movable table 21 is provided to move a scraper 63 and an injection nozzle 42, which will be described later, in the front-rear direction X.

The first movable base 21 includes a hook 25 connected to the rod 16 of the longitudinal drive mechanism 4, a movable base 24 to which the hook 25 is fixed, a pair of left and right rails 26, 26 extending rearward from the movable base 24, and a movable base 24. Supported by a pair of left and right front and rear beams 27, 27 extending forward from the base 24, a pair of left and right slide rail fixing parts 28, 28 installed on the pair of front and rear beams 27, 27, and a pair of slide rail fixing parts 28, 28. A pair of front and rear slide rails 29, 29 are provided.

The hook 25 is arranged, for example, at the center of the first movable base 21 in the left-right direction Y, and is connected to the rod 16 of the front-back drive mechanism 4 so as to move integrally with the rod 16 in the front-back direction X. In this embodiment, the hook 25 is fixed to the rear part of the movable base 24.

The movable base 24 is, for example, a plate-shaped member that is elongated in the left-right direction Y, and is arranged in an upright position. A pair of left and right rails 26, 26 are fixed to the right and left portions of the rear portion of the movable base 24, and these rails 26, 26 extend rearward from the movable base 24.

The pair of left and right rails 26, 26 are received by rollers 14, 14 of the base 3. When the rails 26, 26 move in the front-rear direction X, the rollers 14, 14 roll into contact with the rails 26, 26, so that the first movable platform 21 including the rails 26, 26 can move smoothly in the front-rear direction X. In this embodiment, a pair of front and rear beams 27, 27 are arranged at both left and right ends of the movable base 24.

The pair of left and right front and rear beams 27, 27 are fixed to, for example, the front surface of the movable base 24, and extend along the front and rear direction X. The front and rear beams 27, 27 are made of, for example, channel steel. The space between the pair of left and right front and rear beams 27, 27 is also a space for the injection nozzle 42 to move in the left and right direction Y. A pair of left and right slide rail fixing parts 28, 28 are fixed to, for example, the upper surfaces of the pair of front and rear beams 27, 27.

The slide rail fixing parts 28, 28 are block-shaped members. In this embodiment, holes extending in the left-right direction Y are formed in the slide rail fixing parts 28, 28, and slide rails 29, 29 are inserted into these holes. Thereby, the slide rails 29, 29 are fixed to the slide rail fixing parts 28, 28.

The slide rails 29, 29 support the left and right slide units 23 including the injection nozzle 42, and are configured to be able to move the left and right slide units 23 in the left and right direction Y with respect to the first movable base 21. In this embodiment, the slide rails 29, 29 are provided as a pair at the front and rear, and both extend in the left-right direction Y. The slide rails 29, 29 may each have a circular cross-section, an elliptical cross-section, or a polygonal cross-section in a cross-section perpendicular to the left-right direction Y. good. A left-right drive mechanism 22 is disposed so that the left-right slide unit 23 moves in the left-right direction Y on the slide rails 29, 29 mentioned above.

Referring to FIGS. 1 to 6, the left and right drive mechanism 22 is a hydraulic cylinder mechanism in this embodiment. The left and right drive mechanism 22 is a fixed part fixed to either the first pair of front and rear beams 27, 27 (in this embodiment, the right front and rear beam 27) directly or via a stay 30 as in this embodiment. It has a cylinder 31 and a rod 32 as a movable part that protrudes from the cylinder 31 in the left-right direction Y (leftward). Note that the left-right drive mechanism 22 may have any configuration as long as it can move the left-right slide unit 23 in the left-right direction Y, and may be a drive mechanism other than a fluid pressure cylinder. An example of such a drive mechanism is a rack and pinion mechanism that converts the output rotation of an electric motor or a hydraulic motor installed on the front and rear beams 27 into movement of the movable unit 5 in the front and back direction.

The left and right slide unit 23 is provided to move the injection nozzle 42 in the left and right direction Y. The left and right slide units 23 are arranged between a pair of left and right front and rear beams 27, 27 in plan view. The left and right slide units 23 move in the left and right direction Y on the slide rails 29, 29.

The left and right slide unit 23 includes a second movable base 41 as a slider that is supported slidably in the left-right direction Y by slide rails 29, 29, and a second movable base 41 that is attached to the second movable base 41 and is slidably supported in the left-right direction Y by the slide rails 29, 29. An injection nozzle 42 that moves integrally, a nozzle holder 43 that holds the injection nozzle 42, and a second holder section 57 of a supply pipe holder 55, which will be described later, that is fixed to the second movable base 41. and a second pipe 52 of the supply pipe 50 to be described later, which is held by a second holder part 57.

The second movable base 41 is supported by the first movable base 21 so as to be movable in the front-rear direction X, and supports the injection nozzle 42 so as to be movable in the left-right direction Y. The second movable base 41 is a block-shaped member in this embodiment. A pair of slide holes 41a, 41a are formed in the second movable base 41 and are spaced apart in the front and rear direction X, corresponding to the pair of front and rear slide rails 29, 29. 29, 29 are fitted.

A rod 32 of the left-right drive mechanism 22 is arranged on the side of the second movable base 41 (in the present embodiment, on the right side), and this rod 32 is connected to the second movable base 41 . As a result, the left and right slide unit 23 moves integrally with the movement of the rod 32 in the left and right direction Y. The second movable base 41 has, for example, a right end position Y1 located approximately several cm in the left-right direction Y from the right front and rear beam 27, and a left end position Y2 located at a position approximately several cm in the left and right direction Y from the left front and rear beam 27. It is possible to move in the left-right direction Y between . Note that a cover surrounding the second movable base 41 may be installed.

The injection nozzle 42 is configured to be movable with respect to the tar pan 105 along the left-right direction Y, which is the width direction of the tar pan 105, and injects the cleaning liquid F to the tar pan 105. In this embodiment, the injection nozzle 42 is arranged above the second movable table 41, but it may be arranged at a position straight forward from the second movable table.

The injection nozzle 42 has a configuration in which a nozzle is formed in a cylindrical main body, and injects high-pressure fluid such as water from the nozzle so as to form a cone-shaped jet stream. In this embodiment, the injection nozzle 42 is supported by the second movable base 41, while the scraper 63 is supported by the first movable base 21. Thereby, the injection nozzle 42 is movable in the left-right direction Y independently of the displacement of the scraper 63. Further, in this embodiment, the injection nozzle 42 is arranged at a position rearward from the front end position of the first movable base 21, and is advanced rearward from the tip 63a as the part of the scraper 63 that scrapes the tar pan 105. placed in place. Although the injection nozzle 42 may be directly fixed to the second movable base 41, in this embodiment, it is supported by the second movable base 41 via a nozzle holder 43.

Although the nozzle holder 43 is formed by combining a plurality of members in this embodiment, it may be formed from a single member.

As clearly shown in FIGS. 5 and 6, the nozzle holder 43 includes a first portion 43a fixed to the second movable base 41, a second portion 43b fixed to the first portion 43a, and a second portion 43b fixed to the first portion 43a. It has a third portion 43c fixed to the portion 43b, and a fourth portion 43d fixed to the third portion 43c and coupled to the injection nozzle 42.

In this embodiment, the first portion 43a is a plate member formed in an L-shape in plan view, and is fixed to, for example, the front surface of the second movable base 41. The second portion 43b is a flat plate member perpendicular to the left-right direction Y in this embodiment. A long hole elongated in the front-rear direction X is formed in one of the first portion 43a and the second portion 43b, and a round hole is formed in the other. By screwing nuts to bolts inserted into these long holes and round holes, the second portion 43b is fixed to the first portion 43a so that its position in the front-rear direction X can be changed. There is. That is, the position of the injection nozzle 42 in the front-rear direction X relative to the second movable base 41 can be changed.

In this embodiment, the third portion 43c is a flat plate member extending along the second portion 43b. When viewed from the left-right direction Y, a pair of arc-shaped elongated holes are formed in one of the second portion 43b and the third portion 43c, and a round hole is formed in the other. Since nuts are screwed to bolts inserted into these arc-shaped long holes and round holes, the third portion 43c can rotate around the horizontal axis extending in the left-right direction Y with respect to the second portion 43b. Fixed and repositionable. That is, the direction of the injection nozzle 42 around the horizontal axis extending in the left-right direction Y with respect to the second movable base 41 can be changed. The fourth portion 43d is a clamp member in this embodiment, and is fixed to the third portion 43c using a fixing member such as a bolt while holding the outer peripheral portion of the injection nozzle 42.

With the above configuration, the injection nozzle 42 can change its position in the front-rear direction X and the direction around the horizontal axis extending in the left-right direction Y with respect to the first movable base 21 and the second movable base 41. A cleaning liquid F using water (cooling medium), for example, is supplied to the injection nozzle 42 through a supply pipe 50 .

Referring to FIGS. 2 to 6, the supply pipe 50 is arranged above the second movable table 41 in this embodiment, but may be arranged behind the second movable table 41.

The supply pipe 50 includes a first pipe 51 installed on the first movable base 21 and rising upward from the first movable base 21, and a second pipe installed on the second movable base 41 and rising upward from the second movable base 41. 52, and a flexible tube 53 that connects the first tube 51 and the second tube 52.

The first tube 51 is disposed on the side of the left-right slide unit 23 (on the right in this embodiment), and is located, for example, near the left-right drive mechanism 22 (on the rear in this embodiment). The lower end (base end) of the first pipe 51 is connected to a cleaning liquid source (for example, water supply) via a connecting pipe (not shown). A pressurizing pump that pressurizes the cleaning liquid F may be installed in the connecting pipe. In this embodiment, the first pipe 51 extends upward from the periphery of the left and right drive mechanism 22. The length of the first tube 51 in the vertical direction is set according to the maximum movement amount of the left and right slide unit 23 in the left and right direction Y. The upper end of the first tube 51 is formed, for example, in a downward U-shape, and the tip of the first tube 51 is opened downward. One end of a flexible tube 53 is connected to the tip of the first tube 51 .

The flexible tube 53 is a flexible member that follows the movement of the left and right slide units 23 by deforming along with the movement of the left and right slide units 23 in the left and right direction Y. For example, the flexible tube 53 is arranged so as to draw an arc when the left and right slide unit 23 is at the left end position Y2 farthest from the first tube 51. The other end of the flexible tube 53 is connected to the second tube 52.

The second pipe 52 is also an element of the left and right slide unit 23, as described above. The second pipe 52 includes a rigid upper part 52 a that constitutes one end of the second pipe 52 and is formed in a downward U-shape, and extends forward after proceeding downward from the upper part 52 a to form the injection nozzle 42 . and a lower portion 52b connected to the lower portion 52b.

The other end of the flexible tube 53 is connected to one end of the upper portion 52a. One end of the lower part 52b is connected to the other end of the upper part 52a. The lower portion 52b is a flexible tube similar to the flexible tube 53, and the other end of the lower portion 52b is connected to the injection nozzle 42. The lower portion 52b is elastically deformed according to the position adjustment of the injection nozzle 42 with respect to the second movable base 41.

A supply tube holder 55 is provided to hold the supply tube 50 having the above configuration. The supply pipe holder 55 has a first holder part 56 that supports the first pipe 51 of the supply pipe 50 and a second holder part 57 that supports the second pipe 52.

In this embodiment, the first holder portion 56 is fixed to the stay 30 that supports the left-right drive mechanism 22, and extends in the vertical direction Z along the first tube 51. The first holder portion 56 holds the first tube 51 at, for example, two locations in the vertical direction Z. In this embodiment, the second holder portion 57 is fixed to the second movable base 41 and extends in the vertical direction Z along the upper portion 52a of the second pipe 52. The second holder portion 57 holds the upper portion 52a at, for example, two locations in the vertical direction Z. The second holder portion 57 does not hold the lower portion 52b of the second tube 52, so that it does not inhibit the elastic deformation of the lower portion 52b.

Next, the configuration of the scraper unit 6 will be explained.

The scraper unit 6 is supported by the first movable base 21 of the movable unit 5, and includes a portion that projects forward with respect to the pair of left and right front and rear beams 27, 27.

The scraper unit 6 includes a pair of left and right stays 61, 61 that are connected to the first movable base 21 of the movable unit 5, a support shaft 62 supported by the stays 61, 61, and a support shaft 62 supported by the support shaft 62. The scraper 63 has an upper and lower pair of stoppers 64 and 65 that define the movement range of the scraper 63 around the support shaft 62.

In this embodiment, the stays 61, 61 are block-shaped members fixed to the front lower surfaces of the pair of left and right front and rear beams 27, 27. Note that the stays 61, 61 only need to be fixed to the first movable base 21, and their specific positions are not limited. A bearing hole 61a extending in the left-right direction Y is formed in each of the stays 61, 61, and both ends of the support shaft 62 are rotatably supported by these bearing holes 61a.

The support shaft 62 is arranged along the left-right direction Y. In this embodiment, the support shaft 62 is arranged below the pair of front and rear slide rails 29, 29. The support shaft 62 may be a round shaft as in this embodiment, or may be a polygonal shaft.

The scraper 63 is movable in conjunction with the first movable table 21 in the front-back direction . The scraper 63 is formed into a plate shape, and in this embodiment, is formed into a "F" shape when viewed from the side. More specifically, in a side view, the scraper 63 advances straight forward from the support shaft 62, then curves by several tens of degrees, and then extends straight again.

In the present embodiment, the scraper 63 is arranged in an area that roughly matches the movable range of the injection nozzle 42 in the left-right direction Y. The tip portion 63a of the scraper 63 scrapes the tar pan 105 and the tar 200. A distal end portion of the scraper 63 including a distal end portion 63a of the scraper 63 projects forward with respect to the pair of left and right front and rear beams 27, 27 in a side view. The scraper 63 is supported by the first movable base 21 via a support shaft 62, and scrapes up the object (tar 200) on the tar pan 105 while swinging around the support shaft 62.

The scraper 63 has a tip 63a disposed behind the tar pan 105, for example above the conveyor 107, when the tar pan cleaner 1 is at the rear end position X1. On the other hand, when the tar pan cleaner 1 is at the front end position X2, the scraper 63 has a tip 63a disposed at the upper end (narrow space 108) of the tar pan 105 below the furnace lid 104. In this way, the scraper 63 is configured to reach below the furnace mouth 103 (below the furnace lid 104) at the upper part of the tar pan 105.

The lower stopper 64, which is disposed on the lower side of the pair of upper and lower stoppers 64, 65, is provided to define the lower end position Z1 of the tip portion 63a of the scraper 63. The lower stopper 64 is provided adjacent to the support shaft 62. The lower stopper 64 is provided, for example, on each of the pair of left and right front and rear beams 27, 27. The lower stopper 64 has, for example, a bolt that is screwed to a stay fixed to the corresponding front and rear beams 27, 27, and by adjusting the amount of protrusion of the bolt with respect to the stay, the lower end position Z1 around the support shaft 62 can be adjusted. is adjustable. The lower stopper 64 restricts the rotational movement of the scraper 63 downward by receiving the proximal end portion of the scraper 63.

The upper stopper 65 is provided to face the lower stopper 64 in the circumferential direction of the support shaft 62. The upper stopper 65 is provided, for example, on each of the pair of left and right front and rear beams 27, 27. The upper stopper 65 has, for example, a bolt that is screwed to a stay fixed to the corresponding front and rear beams 27, 27, and by adjusting the amount of protrusion of the bolt with respect to the stay, the upper end position Z2 around the support shaft 62 can be adjusted. is adjustable. The upper stopper 65 restricts the upward rotational movement of the scraper 63 by receiving the proximal end portion of the scraper 63.

The tip portion 63a of the scraper 63 is aligned in height with the lower end position of the tar pan 105 at the lower end position Z1. Further, the tip portion 63a of the scraper 63 is aligned in height with the upper end position of the tar pan 105 at the upper end position Z2.

Next, a configuration for controlling the operation of the tar pan cleaner 1 will be explained.

FIG. 7 is a block diagram for explaining a configuration related to control of the tar pan cleaner 1. As shown in FIG. Referring to FIGS. 1 to 7, the tar pan cleaner 1 includes a control section 71. As shown in FIG. This control unit 71 may be, for example, a sequence circuit, a PLC (Programmable Logic Controller), or a computer including a CPU, ROM, and RAM.

The control unit 71 is electrically connected to the longitudinal drive mechanism 4 and the left and right drive mechanism 22. More specifically, the control unit 71 includes an electric control valve such as a solenoid valve provided in a hydraulic circuit for driving the rod 16 of the longitudinal drive mechanism 4 and an electric control valve for driving the rod 32 of the left and right drive mechanism 22. It is connected to an electric control valve such as a solenoid valve provided in the hydraulic circuit of Thereby, the control unit 71 can control the longitudinal displacement of the movable unit 5 by the longitudinal drive mechanism 4 and the lateral displacement of the left-right slide unit 23 by the left-right drive mechanism 22. That is, the control unit 71 controls the movement of the injection nozzle 42 and the scraper 63 in the front-rear direction X, and the movement of the injection nozzle 43 in the left-right direction Y.

Further, the control unit 71 is connected to an injection nozzle valve 72 which is an electric control valve such as an electromagnetic on-off valve disposed between the supply pipe 50 and the cleaning liquid source, and turns on the supply of cleaning liquid to the injection nozzle 42. /Off control.

Furthermore, in this embodiment, the movable unit 5 is provided with a left-right position sensor 73 for detecting the position of the left-right slide unit 23 in the left-right direction Y. The left and right position sensor 73 only needs to be able to detect the right end position Y1 and the left end position Y2 of the left and right slide unit 23, and its specific configuration is not limited.

Further, in this embodiment, the tar pan cleaner 1 is provided with a rear end position sensor 74 for detecting the position of the movable unit 5 (injection nozzle 42 and scraper 63) at the rear end position X1. The rear end position sensor 74 is not limited in its specific configuration as long as it can detect the rear end position X1 of the movable unit 5. In this embodiment, the setting of the front end position X2 of the movable unit 5 (injection nozzle 42 and scraper 63) by the control unit 71 is performed by timer control. Specifically, after a certain period of time has elapsed since the movable unit 5 starts moving forward by driving the longitudinal drive mechanism 4 when the movable unit 5 is at the rear end position X1, the control unit 71 starts driving the longitudinal drive mechanism 4. to stop. As a result, the movable unit 5 (front end portion 63a of the scraper 63) reaches the front end position X2. In this manner, by controlling the front end portion 63a of the scraper 63 to reach the front end position X2 using timer control, the operation of the scraper 63 can be performed in accordance with the difference in opening and closing of the coke oven 100.

Note that the control unit 71 may control the movement of the left and right slide unit 23 (injection nozzle 42) in the left and right direction Y with the left and right position sensor 73 omitted. In this case, the control unit 71 controls the left and right drive mechanism 22 at regular intervals, and also controls on/off of the supply of the cleaning liquid F from the injection nozzle 42 by timer control or the like. Similarly, the control section 71 may control the movement of the movable unit 5 (the injection nozzle 42 and the scraper 63) in the longitudinal direction X with the rear end position sensor 74 omitted. In this case, the control unit 71 controls the front and rear drive mechanism 4 by timer control or the like that changes the drive mode of the front and rear drive mechanism 4 at regular intervals, thereby moving the movable unit 5 (injection nozzle 42 and scraper 63) to the rear end. It is moved between position X1 and front end position X2.

Next, an example of the cleaning operation of the tar pan 105 in the tar pan cleaner 1 will be described.

FIG. 8 is a flowchart for explaining an example of the operation of the tar pan cleaner 1. When explaining with reference to a flowchart, the explanation will also be made with appropriate reference to figures other than the flowchart.

Referring to the flowchart in FIG. 8, in this embodiment, the tar pan cleaner 1 starts cleaning the tar pan 105 from when the movable unit 5 is at the rear end position X1 and the left and right slide units 23 are at the right end position Y1. Begins.

The control unit 71 first moves the movable unit 5 forward by driving the longitudinal drive mechanism 4 (step S1). Thereby, the tip 63a of the scraper 63 comes into contact with the lower end of the tar pan 105, and further moves upward around the support shaft 62 while scraping up the tar pan 105 so as to trace the top of the tar pan 105. The control unit 71 stops driving the longitudinal drive mechanism 4 after a predetermined period of time has elapsed since the drive of the longitudinal drive mechanism 4 started. As a result, the front end 63a of the scraper 63 stops at the front end position X2.

The control unit 71 causes the injection nozzle 42 to inject the cleaning liquid F while reciprocating the injection nozzle 42 in the left-right direction Y at a timing before or after the scraper 63 contacts the tar pan 105 (step S2). Note that step S2 may be executed before step S1, may be executed simultaneously with step S1, or may be executed after the start time of step S1.

In step S2, the control unit 71 opens the injection nozzle valve 72 to supply the cleaning liquid F to the injection nozzle 42, and detects the position of the left and right slide unit 23 (injection nozzle 42) in the left and right direction Y using the left and right position sensor 73. At the same time, the left and right slide unit 23 is moved to the left by driving the left and right drive mechanism 22. When the control unit 71 detects that the left and right slide unit 23 has reached the left end position Y2, it changes the moving direction of the rod 32 of the left and right drive mechanism 22, and moves the left and right slide unit 23 (injection nozzle 42) until it reaches the right end position Y1. move. Thereby, the injection nozzle 42 moves back and forth, for example, once in the left-right direction Y while injecting the cleaning liquid F onto the tar pan 105. When the control unit 71 detects that the injection nozzle 42 has returned to the right end position Y1, the control unit 71 closes the injection nozzle valve 72 to stop the injection of the cleaning liquid F from the injection nozzle 42.

After the injection nozzle 42 makes one reciprocation in the left-right direction Y, the control unit 71 moves the scraper 63 by a predetermined amount in a direction (backward) away from the furnace opening 103 (step S3). At this time, the control unit 71 retreats the scraper 63 to an intermediate position between the front end position X2 and the rear end position X1, for example, by driving the longitudinal drive mechanism 4 for a predetermined period of time.

Next, the control unit 71 causes the injection nozzle 42 to inject the cleaning liquid F while performing a reciprocating operation in the left-right direction Y by the injection nozzle 42 (step S4). The operation in step S4 is the same as step S2. As described above, in the present embodiment, the injection nozzle 42 is configured to move back and forth once in the left-right direction Y while injecting the cleaning liquid F, and then move backward by a predetermined amount, and then to inject the cleaning liquid F again. There is.

Next, the control unit 71 moves the rod 16 of the longitudinal drive mechanism 4 rearward, thereby retracting the movable unit 5 (scraper 63) to the rear end position X1 (step S5). At this time, the control section 71 drives the longitudinal drive mechanism 4 until the rear end position sensor 74 detects that the movable unit 5 has reached the rear end position X1. Stop driving.

In addition, in this embodiment, the number of reciprocating movements of the injection nozzle 42 in the left-right direction Y in one cleaning operation described above may be one time, or may be three or more times. Further, during the cleaning operation by the tar pan cleaner 1, the cleaning liquid F may be constantly injected from the injection nozzle 42.

As described above, according to the present embodiment, the scraper 63 scrapes up the tar 200 on the tar pan 105 by moving from below the tar pan 105 so as to climb over the tar pan 105. Compared to the conventional configuration in which the scraper 63 scrapes off the tar 200 while moving downward on the tar pan 105, with the configuration of this embodiment, the scraper 63 can more reliably catch the tar 200 on the tar pan 105. I can do it. Therefore, the problem of the scraper 63 simply tracing over the tar 200 and not being able to scrape off the tar 200 can be avoided. Therefore, the tar 200 on the tar pan 105 can be more reliably scraped up and peeled off from the tar pan 105 with the scraper 63, and the tar 200 can be removed from the tar pan 105 more reliably.

Further, according to the present embodiment, the scraper 63 can scrape up a wide range on the tar pan 105 by swinging around the support shaft 62 along the left-right direction Y.

Further, according to the present embodiment, the furnace mouth part 103 is arranged above the upper part of the tar pan 105, and the scraper 63 is located below the furnace mouth part 103 (furnace lid 104) at the upper part of the tar pan 105 at the front end position X2. It is designed to reach up to. With this configuration, the scraper 63 can scrape up the tar 200 that has accumulated in the vertically narrow space 108 between the furnace lid 104 and the tar pan 105 below the furnace mouth portion 103 (furnace lid 104). While it is actually difficult to reach the narrow space 108 by swinging the scraper 63 down from above, in this embodiment, the scraper 63 can more reliably enter the narrow space 108 from below.

Further, according to the present embodiment, the injection nozzle 42 is configured to be movable in the left-right direction Y with respect to the tar pan 105 and injects the cleaning liquid F to the tar pan 105. According to this configuration, while scraping the tar 200 on the tar pan 105 with the scraper 63 and removing it from the tar pan 105, the high pressure cleaning liquid F of, for example, several MPa from the injection nozzle 42 is made to reach a wide range of the tar pan 105, and the tar 200 is removed from the tar pan 105. Tar 200 can be peeled off from tar pan 105. Thereby, the tar 200 on the tar pan 105 can be removed more reliably.

Further, according to the present embodiment, the injection nozzle 42 is configured to be movable independently of the displacement of the scraper 63. According to this configuration, while performing an operation (scraping operation) of the scraper 63 suitable for scraping up the tar 200, the injection nozzle 42 is ejected from a location suitable for removing the tar 200 on the tar pan 105 by the injection nozzle 42. Cleaning liquid F can be sprayed. There is no need to forcibly link the scraping operation by the scraper 63 and the injection position of the injection nozzle 42, and as a result, the effect of removing tar 200 by the scraper 63 and the injection nozzle 42 can be optimized. In particular, in this embodiment, the injection nozzle 42 is arranged behind the tip 63a of the scraper 63 that scrapes the tar pan 105. Thereby, the injection nozzle 42 can supply a sufficiently large cone-shaped jet with sufficient hydraulic pressure to the tar pan 105 from a position appropriately separated from the tar pan 105.

Further, according to the present embodiment, the scraper 63 can be moved in the front-rear direction X by the first movable table 21, and the injection nozzle 42 can be moved in the left-right direction Y by the second movable table 41. With this configuration, the movement of the scraper 63 and the injection nozzle 42 in the front-rear direction X and the movement of the injection nozzle 42 in the left-right direction Y can be executed with a high degree of freedom. Therefore, the tar removal effect due to cooperation between the scraper 63 and the injection nozzle 42 can be further enhanced.

Further, according to the present embodiment, the flexible pipe 53 is provided between the first pipe 51 and the second pipe 52 of the supply pipe 50, so that the second movable base 41 (injection nozzle 42) can be moved in the left-right direction Y. The supply pipe 50 can be elastically deformed when the cleaning liquid F is moved, and the operation of supplying the cleaning liquid F by the supply pipe 50 can be continued smoothly.

Further, according to the present embodiment, the injection nozzle 42 moves back and forth once in the left-right direction Y while injecting the cleaning liquid F, and then moves backward (in a direction away from the furnace opening 103) by a predetermined amount, and then injects the cleaning liquid F again. configured to spray. In this way, by reciprocating the cleaning liquid F multiple times while moving the scraper 63 backward, the jet from the jet nozzle 42 can be applied to more areas on the tar pan 105 to remove the tar 200.

The embodiments of the present invention have been described above. However, the invention is not limited to the embodiments described above. The present invention can be modified in various ways within the scope of the claims.

The present invention can be widely applied as a tar pan cleaner.

1 Tar pan cleaner 21 1st movable base (movable base)
41 Second movable table 42 Injection nozzle 50 Supply pipe 51 First pipe 52 Second pipe 53 Flexible pipe 63 Scraper 100 Coke oven 101 Hearth bottom 103 Furnace mouth 105 Tar pan 200 Tar (object)
F Cleaning liquid X Front-rear direction Y Left-right direction

Claims (6)

A tar pan cleaner for cleaning an inclined tar pan that is arranged on the bottom side of a coke oven and whose height increases as it approaches the mouth of the coke oven,
a scraper configured to scrape an object on the tar pan while moving in a front-rear direction as a direction approaching and away from the furnace mouth;
an injection nozzle that is configured to be movable with respect to the tar pan along a left-right direction as a width direction of the tar pan, and that injects a cleaning liquid to the tar pan;
It is equipped with a tarpan cleaner. The tar pan cleaner according to claim 1, wherein the injection nozzle is configured to be movable independently of displacement of the scraper. a first movable table that moves the scraper in the front-rear direction;
a second movable base that is supported by the first movable base to move in the front-back direction and supports the injection nozzle so as to be movable in the left-right direction;
The tar pan cleaner according to claim 2, further comprising: further comprising a supply pipe for supplying the cleaning liquid to the injection nozzle,
The supply pipe includes a first pipe installed on the first movable base and rising upward from the first movable base, and a second pipe installed on the second movable base and rising upward from the second movable base. 4. The tar pan cleaner according to claim 3, further comprising: a flexible tube connecting the first tube and the second tube. The tar pan cleaner according to claim 1, wherein the injection nozzle is disposed at a position of the scraper that advances rearward from a portion of the scraper that scrapes the tar pan. The injection nozzle is configured to move back and forth once in the left-right direction while injecting the cleaning liquid, move by a predetermined amount in a direction away from the furnace opening in the front-back direction, and then inject the cleaning liquid again. The tar pan cleaner according to any one of claims 1 to 5, wherein:

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