JP2001115164A - Nozzle jet range variable apparatus and oven lid cleaning apparatus equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable one cleaning nozzle to clean oven lids different in gas channel width. SOLUTION: This apparatus changes the jet range of a cleaning nozzle for jetting high-pressure water without changing the angle of incidence of the nozzle. The apparatus comprises a driven gear 6a; a fixed gear 6b having the same number of gears as the driven gear; an intermediate gear 6c installed between the driven gear 6a and the fixed gear 6b; a gear casing 5 which encloses the driven gear 6a, the intermediate gear 6c, and the fixed gear 6b and the driven gear side of which can be rotated in a specified angle around the fixed gear shaft 6ba as the center of rotation; and a hydraulic motor 7 for rotating the gear casing 5 in a specified angle. A cleaning nozzle 1 is directly fixed to and supported by the driven gear 6a in the gear casing 5. By using this apparatus, oven lids can be cleaned without leaving behind uncleaned parts even when oven lids different in gas channel width are cleaned. Since high-pressure water is not jetted to the outside of the cleaning range, the surface of bricks at the knife edge side is not quickly cooled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method of removing and cleaning tar and the like adhering to a gas path portion of a furnace cover of a coke oven installed in an ironworks, for example, in which furnace covers having different gas path shapes are mixed. In the case, the washing range is changed while maintaining the angle of attack constant, and the nozzle spray range changing device of the washing nozzle can be effectively adapted to a plurality of washing ranges.
Further, the present invention relates to a furnace lid cleaning device provided with the variable device.

[0002]

2. Description of the Related Art A gas path for discharging gas generated during coal carbonization is installed in a furnace lid of a coke oven. When dust or tar in a gas component adheres to the gas path, a gas path is formed. As the road narrows, the pressure inside the furnace increases, and gas leaks occur. Therefore, every time the coke oven is discharged, the furnace lid cleaning device cleans and removes deposits such as tar adhered to the furnace lid gas path.

[0003] As such a furnace lid cleaning device,
A radial cutter that cleans the brick part on the side of the furnace lid where dried carbon adheres to a lifting device that moves up and down along the gas path of the removed furnace lid, and a knife that adheres sticky tars Japanese Patent Application Laid-Open (JP-A) No. 59-182886 and Japanese Patent Laid-Open Publication No. Hei.
No. 9391 and the like.

[0004]

However, in the above-mentioned conventional furnace lid cleaning apparatus, the cleaning width by one nozzle gun is limited. Therefore, when the furnace lids having different gas path widths are mixed, uncleaned. There was a problem that parts occurred.

If all the furnace lids having different gas path widths are made to correspond by one nozzle gun, high pressure water is sprayed out of the cleaning range in a furnace lid whose cleaning range is not suitable. On the knife edge side, high-pressure water is sprayed out of the furnace lid, and the surface of the high-temperature brick is rapidly cooled, causing a problem that the brick is adversely affected.

As a means for solving the above-mentioned problem, it is conceivable to switch the cleaning range by using a plurality of nozzle guns, for example, two nozzle guns. However, it is impossible to arrange two nozzle guns side by side in the gas path. There is. When two nozzle guns are arranged in the vertical direction of the gas path, the lower part of the gas path impedes the cleaning range of the nozzle gun located at the lower part of the gas path, leaving uncleaned parts. In addition, when washing with the nozzle gun positioned above, there is also a problem that the scattered tar adheres to the nozzle gun positioned below and malfunctions.

[0007] The present invention has been made in view of the above-described problems, and can cope with a case where furnace heads having different gas path widths are mixed without generating an uncleaned portion with one cleaning nozzle. The cleaning device can be switched to various cleaning ranges by a simple configuration that does not require a complicated device, and the gas passage can be efficiently cleaned. It is an object of the present invention to provide a furnace lid cleaning device provided with a variable device.

[0008]

In order to achieve the above object, a variable nozzle injection range device according to the present invention comprises a driven gear and a fixed gear having the same number of teeth, and an intervening device interposed between the driven gear and the fixed gear. A gear casing in which the driven gear side is rotatable at a predetermined angle around a fixed gear shaft is configured to be rotatable at a predetermined angle by a rotation source, and directly or directly with the driven gear of the gear casing. The cleaning nozzle is fixedly supported indirectly. By doing so, it is possible to change the nozzle ejection range by changing the distance between the cleaning nozzle and the surface to be cleaned while keeping the angle of attack of the cleaning nozzle constant.

Further, the apparatus for cleaning a furnace lid according to the present invention comprises a moving body movable by a drive unit along a guide member provided at a predetermined distance from a furnace lid to be cleaned. A pair of arm members pivotally supported on the same fulcrum shaft is installed so as to be able to move toward and away from the arm, and the other end side of the pair of arm members is provided with an angle of attack by the nozzle injection range variable device described above. A cleaning nozzle for the gas path of the furnace lid that can change the injection range while maintaining a constant value, and a removing member that is disposed close to the cleaning nozzle and that removes at least solid matter attached to the furnace lid are attached. By doing so, the distance between the cleaning nozzle and the removing member can be kept constant by the contact and separation movement of the pair of arm members.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A nozzle injection range changing device according to the present invention is a device for changing an injection range while maintaining a constant angle of attack of a cleaning nozzle for jetting high-pressure water, and comprises a driven gear having the same number of teeth and a driven gear. A fixed gear, an intermediate gear interposed between the driven gear and the fixed gear, and the driven gear, the intermediate gear, and the fixed gear are provided, and the driven gear can rotate at a predetermined angle around the fixed gear axis. The cleaning casing comprises a gear casing and a rotation source for rotating the gear casing by a predetermined angle. The cleaning nozzle is fixedly supported directly or indirectly to a driven gear of the gear casing.

[0011] The variable nozzle injection range device according to the present invention comprises:
With the configuration as described above, if the rotation source is driven to rotate the gear casing about the fixed gear shaft, the driven gear, that is, the cleaning nozzle is rotated around the fixed gear via the intermediate gear, The angle between the cleaning nozzle and the surface to be cleaned changes, so that the nozzle injection range is about to change.However, since the number of teeth of the fixed gear and the driven gear is the same, the cleaning nozzle changes in the opposite direction, The corners do not change.

A furnace lid cleaning apparatus according to the present invention includes a guide member provided at a predetermined interval on a furnace lid to be cleaned, a movable member movable along the guide member, and a movable member movable along the guide member. A driving unit for moving the body along the furnace lid, wherein the moving body includes a pair of arm members each having one end pivotally supported by the same fulcrum shaft, and a pair of arm members. A swing source is provided for swinging the other end side toward and away, and the other end side of the pair of arm members is provided with a nozzle injection range variable device according to the present invention to keep the angle of attack constant while maintaining the injection range. A cleaning nozzle for a changeable furnace lid gas path, and a removing member which is disposed in proximity to the cleaning nozzle and removes at least solid matter adhered to the furnace lid are mounted.

Since the furnace lid cleaning apparatus according to the present invention is configured as described above, the swing source is driven to move the pair of arm members closer to and away from each other, so that the cleaning nozzle attached to these arm members can be moved. The interval between the removing members can be kept constant.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a variable nozzle injection range apparatus according to the present invention will be described with reference to one embodiment shown in FIGS. 1 to 5, and then a furnace lid cleaning apparatus provided with the variable nozzle injection range apparatus will be described with reference to FIG.
A description will be given based on an embodiment shown in FIGS.

FIG. 1 is a schematic explanatory view of a nozzle injection range varying device according to the present invention. FIG. 1 (a) is a front view showing a cross section of a gear casing, FIG. 1 (b) is a plan view, and FIG. FIG. 3 is an enlarged view of the nozzle ejection range variable device viewed from the rear side with the gear casing and the rotation source omitted to show the positional relationship between the hydraulic motor and the rotary joint. FIG. 3 is a nozzle ejection range variable device according to the present invention. FIG. 4 is a plan view showing a cross section of a gear casing rotating mechanism in FIG.
FIG. 5 is a plan view showing a main part of another embodiment of the present invention, in which FIG.
Fig. 6 is an explanatory view of a furnace lid cleaning apparatus according to the present invention, (a) is an overall front view, and (b) is (a). A is a sectional view taken along the line A-A, (c) is an enlarged view of a main part of (a), FIG. 7 is a view for explaining the adhesion of tar to the furnace lid, (a) is a view seen from the back side, (b) ) Is an arrow A view of (a), (c) is an arrow B view of (a), (d) is an arrow C view of (a), and FIG. 8 uses the furnace lid cleaning apparatus according to the present invention. FIG. 5 is a view for explaining the operation when cleaning the furnace lid by heating.

1 to 5, reference numeral 1 denotes a constant injection angle θ.
₃ is a washing nozzle provided with an injection cylinder 1b having, for example, both ends of a bifurcated water channel as injection ports 1a. In the present embodiment, a shaft portion 1c and gears 1d and 1e that mesh with each other.
And is connected to the hydraulic motor 2 via the motor to rotate.

Therefore, in order to supply pressurized water to the rotating cleaning nozzle 1, a rotary joint 3 is attached to the base end of the cleaning nozzle 1 (shaft portion 1c), and the cleaning nozzle 1 is connected via the rotary joint. To supply pressurized water. The washing nozzle 1, the hydraulic motor 2, and the rotary joint 3 are installed via a nozzle mount 4 at a coaxial position with a driven gear shaft 6 a a of the gear casing 5, which will be described later.

6a is a driven gear, 6b is a fixed gear,
These gears have the same number of teeth, and are fitted in the gear casing 5 with the intermediate gear 6c interposed therebetween. On the other hand, the gear casing 5 has, for example, a driven gear side around a fixed gear shaft 6ba, for example. Θ ₂ ° by hydraulic motor 7
It is attached to the gantry 8 so that it can freely rotate.

With respect to the fixed gear 6b, the gear casing 5 is configured so that the driven gear can rotate by a predetermined angle about the fixed gear shaft 6ba. For example, in FIG. 3, the fixed gear 6b and the fixed gear shaft 6ba A bush 9a is interposed between the (output shaft 7a of the hydraulic motor 7) to prevent the rotation of the output shaft of the hydraulic motor 7 from being transmitted to the fixed gear 6b, and a gear stopper having the fixed gear 6b erected on the gantry 8. 10, the fixed gear shaft 6ba and the gear casing 5 are integrated via a power lock 11.

FIG. 4 shows an output shaft 7 of the hydraulic motor 7.
a, a case 13 welded to the gear casing 5 is keyed, for example, so as to transmit the rotation of the output shaft 7a of the hydraulic motor 7 to the gear casing 5, and the case 13
In FIG. 1, the one of the fixed gear shaft 6ba is supported via a bush 9b so that the rotation of the output shaft 7a of the hydraulic motor 7 is not transmitted to the fixed gear 6b.
In FIG. 4, the other support portion of the fixed gear shaft 6ba is keyed so that the fixed gear 6b does not rotate.

In the configuration shown in FIG. 3, the gear stopper 1
In order to prevent dust from entering the gear casing 5 from the gear casing opening provided at the joint portion between the fixed gear 6 and the fixed gear 6b, it is necessary to attach the dustproof cover 12 to the portion, as shown in FIG. No dust cover is required in the configuration shown in FIG. Incidentally, reference numeral 14 in FIGS. 3 and 4 denotes a bearing box.

The variable nozzle injection range device according to the present invention comprises:
With the configuration as described above, high-pressure water is supplied from the high-pressure water supply port of the rotary joint 3, and from the injection port 1 a of the cleaning nozzle 1 rotated by the hydraulic motor 2 toward the surface A to be cleaned at an angle of attack of θ _1. upon jetting high-pressure water Te, changing the injection range while keeping to pick angle theta ₁ constant as follows.

That is, in the nozzle injection range varying device according to the present invention, the hydraulic motor 7 is driven to move the gear casing 5 around the fixed gear shaft 6ba, for example, from the position shown by the solid line in FIG. to the position shown in, if the theta ₂ ° turns in the clockwise direction, the driven gear 6a i.e. the cleaning nozzle 1 is to be rotated around the fixed gear 6b via the intermediate gear 6c.

Therefore, the rotation of the gear casing 5 (cleaning nozzle 1) causes the cleaning nozzle 1 and the surface A to be cleaned (FIG. 5).
In the embodiment shown in FIG. 3, the distance between the furnace cover B and the gas path Ba) is h1.
From h2 to h2, and as shown in FIGS. 5A and 5B, the nozzle ejection range changes. Then, in a nozzle firing range varying apparatus according to the present invention, this time, the fixed gear 6b number of teeth of the driven gear 6a are the same, it does not attack theta ₁ of the cleaning nozzle 1 is changed.

Next, a furnace lid cleaning apparatus according to the present invention equipped with the above-described variable nozzle injection range device will be described with reference to FIG. In FIG. 6, reference numeral 21 denotes a guide member provided at a predetermined interval from the furnace lid B to be cleaned, which is provided upright, and is guided by the guide member 21 so that the drive unit 2 is driven.
2, the moving body 23 moves.

The driving section 22 connects the moving body 23 to the guide member 2.
In this embodiment, the driving sprocket 22a is rotated at one end, for example, the upper end, and the driven sprocket 22b is rotated at the other end, for example, the lower end of the guide member 21. The moving body 23 is attached to a chain 22c wound between the driving sprocket 22a and the driven sprocket 22b.
And the drive sprocket 22 is driven by the motor 22d.
This shows that the moving body 23 is moved by rotating the chain 22c forward / reverse via a.

FIG. 6 (b) shows the moving body 23.
As shown in FIG.
The pair of arm members 25a and 25b pivotally supported by the arm members are installed so that the other end side can be moved toward and away from the other end by a swing source such as a motor (not shown). On the other end side of the nozzles 25a and 25b, a cleaning nozzle 1 whose ejection range can be changed while maintaining a constant angle of attack by the nozzle ejection range variable device described above, Further, a removing member for removing solid matter attached to the furnace lid B, for example, a screw cutter 27 rotated by a motor 30 is attached.

In the furnace lid cleaning apparatus according to the present invention having the above-described configuration, the arm members 25a and 25b forming a pair by driving the motor are formed.
By moving the arm members 25a,
Cleaning nozzle 1 and screw cutter 2 attached to 25b
7 was adjusted in accordance with the width of the furnace lid B, and as shown in FIG.
Face the gas path Ba on both sides of the furnace lid B.

Then, by moving the movable body 23, dust and solidified deposits on the surface of the furnace cover B and the cleaning nozzle 1 are rotated by the rotating screw cutter 27.
The high-pressure water sprayed from the cleaning nozzle 1 in which the spraying range of the high-pressure water is set in advance as described above is used to remove the adhered matter adhered to the gas path Ba of the furnace cover B. Wash the kimono.

In this embodiment, the moving body 23 is connected to the guide member 2.
In addition to cleaning the both sides of the furnace lid B with the cleaning nozzle 1 capable of changing the above-described injection range and the rotating screw cutter 27 by moving along the
Cleaning nozzles 28a, 28b for upper and lower surfaces and screw cutters 29a, 29b are also provided above and below the furnace lid B, respectively.
The cleaning nozzles 28a and 28b and the screw cutters 29a and 29b are used to clean the gas path Ba formed above and below the furnace lid B.

The upper and lower cleaning nozzles 28a and 28b and the screw cutters 29a and 29b
Needless to say, when the gas path Ba is cleaned, the cylinder device (not shown) moves in the front-rear direction in FIG. 6A, and the screw cutters 29a and 29b are rotated by a motor or the like.

Next, using the furnace lid cleaning apparatus according to the present invention having the structure shown in FIG. 6, dust and solidified substances adhered to the surface of the furnace lid B are removed, and the furnace lid B is cleaned. A method of cleaning the tar adhering to the gas path Ba will be described with reference to FIG.

Tar T adhering to gas path Ba of furnace lid B
As shown in FIG. 7, water tends to flow downward and collect and adhere to the lower side surface and the lower surface (the hatched portion in FIG. 7A). 1. First, while jetting high-pressure water from the lower surface cleaning nozzle 28b, the lower surface screw cutter 29b is rotated to reciprocate in the width direction of the furnace lid B, thereby cleaning the lower surface side of the furnace lid B (FIG. 8). A, b).

2. Next, as described above, with the injection range of the cleaning nozzle 1 being optimally set in accordance with the width of the gas path Ba of the furnace lid B to be cleaned, the moving body 23 is moved from the ascending limit position to the furnace lid. It descends at high speed to the upper part of B (FIG. 8c). Thereafter, at this position, the width is adjusted according to the width of the furnace lid B, and the screw cutter 27 is pressed against the side surface of the furnace lid B (d in FIG. 8). Then, while maintaining the pressure-bonded state, high-pressure water is sprayed from the cleaning nozzle 1 and the moving body 23 is lowered at high speed to near the lower portion of the furnace lid B while rotating the screw cutter 27 (e in FIG. 8). Thereafter, it is lowered at a low speed while maintaining the same state (f in FIG. 8).
After cleaning the side surface of the furnace cover B by the above operation, the screw cutter 27 is separated from the side surface of the furnace cover B (FIG. 8).
G), the moving body 23 is raised at a high speed to near the upper portion of the furnace lid B (h in FIG. 8).

3. Next, the above operation 1 is repeated again. 4. Next, while jetting high-pressure water from the cleaning nozzle 28a for the upper surface, the screw cutter 29a for the upper surface is rotated to reciprocate in the width direction of the furnace lid B, thereby cleaning the upper surface side of the furnace lid B (FIG. 8 i, j).

5. Finally, after the screw cutter 27 is pressed against the side surface of the furnace cover B (k in FIG. 8), high pressure water is injected from the cleaning nozzle 1 while maintaining the pressed state to the ascending limit position, and the screw cutter 27 is pressed. , The moving body 23 is raised at a high speed to clean the side surface of the furnace lid B (m in FIG. 8). After the cleaning, the screw cutter 27 is separated from the side of the furnace lid B (n in FIG. 8), and waits for the next cleaning.

In this embodiment, the hydraulic motor 7 is used as a rotation source of the gear casing 5 and the driving unit 22 of the moving body 23 is used.
Is shown using the sprockets 22a and 22b, the chain 22c and the motor 22d, but the design can be changed as long as the same action is achieved. Also,
In this embodiment, a screw cutter 27 is used as a removing member.
However, a scraper type may be used as long as it can remove solid matter attached to the cleaning nozzle 1 and the furnace lid B.

[0038]

As described above, in the nozzle injection range changing device according to the present invention, the angle of attack of the cleaning nozzle can be increased simply by driving the rotation source to rotate the gear casing about the fixed gear shaft. The nozzle spray range can be kept constant by changing the distance between the cleaning nozzle and the object to be cleaned while keeping the distance constant.

Therefore, by adopting the nozzle injection range varying device according to the present invention, even when, for example, furnace lids having different gas path widths are mixed, uncleaned portions are not generated, and high-pressure water is removed outside the cleaning range. Is not sprayed, and the high-temperature brick surface is not rapidly cooled on the knife edge side, and the problem of adversely affecting the brick does not occur.

Further, in the furnace lid cleaning apparatus according to the present invention, the distance between the cleaning nozzle attached to these arm members and the removing member is changed only by driving the swing source to move the paired arm members toward and away from each other. Therefore, it is possible to easily cope with the case where the width of the furnace lid is different.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of a nozzle injection range varying device according to the present invention, wherein (a) is a front view showing a cross section of a gear casing portion, and (b) is a plan view.

FIG. 2 is an enlarged view of a nozzle ejection range variable device according to the present invention viewed from the rear side with a gear casing and a rotation source omitted, in order to show a positional relationship between a hydraulic motor and a rotary joint.

FIG. 3 is a plan view illustrating a cross section of a rotation mechanism of a gear casing in the nozzle injection range changing device according to the present invention.

FIG. 4 is a main part plan view showing a cross section of another embodiment of FIG. 3;

FIGS. 5A and 5B are injection state diagrams of the nozzle injection range changing device according to the present invention, wherein FIG. 5A shows a case where the nozzle injection range is narrow, and FIG. 5B shows a case where the nozzle injection range is wide.

FIG. 6 is an explanatory view of a furnace lid cleaning apparatus according to the present invention;
Is an overall front view, (b) is a sectional view taken along line AA of (a), (c)
3 is an enlarged view of a main part of FIG.

FIG. 7 is a view for explaining the state of adhesion of tar to a furnace lid,
(A) is a view from the back side, (b) is an arrow A in (a).
FIG. 7C is a view B in the direction of the arrow in FIG. 7A, and FIG.

FIG. 8 is a diagram illustrating an operation when cleaning the furnace lid using the furnace lid cleaning apparatus according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 cleaning nozzle 5 gear casing 6a driven gear 6aa driven gear shaft 6b fixed gear 6ba fixed gear shaft 6c intermediate gear 7 hydraulic motor 21 guide member 22 drive unit 23 moving body 25a arm member 25b arm member 27 screw cutter

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kazunori Akashi 1850 Minato, Wakayama-shi, Wakayama F-term in Sumitomo Metal Industries, Ltd. Wakayama Works 4H012 BA01

Claims (2)

[Claims] 1. An apparatus for changing a spray range while maintaining a constant angle of attack of a cleaning nozzle for spraying high-pressure water,
A driven gear and a fixed gear having the same number of teeth, an intermediate gear interposed between the driven gear and the fixed gear, these driven gears,
An intermediate gear and a fixed gear are internally provided, and the driven gear side includes a gear casing capable of rotating by a predetermined angle around the fixed gear shaft, and a rotation source that rotates the gear casing by a predetermined angle. A variable nozzle injection range device wherein a cleaning nozzle is fixedly supported directly or indirectly with a driven gear. 2. A guide member provided at a predetermined interval on a furnace lid to be cleaned, a movable body movable along the guide member, and a drive for moving the movable body along the furnace lid. The movable body includes a pair of arm members each having one end pivotally supported by the same fulcrum shaft, and a swinging unit for bringing the other end of the pair of arm members into and out of swing. A power source is installed, and the other end of the pair of arm members is provided on the other end side.
A cleaning nozzle for a furnace lid gas path whose injection angle can be changed while keeping the angle of attack constant by the nozzle spray range variable device described above, and a removal nozzle disposed close to the cleaning nozzle and removing at least solid matter attached to the furnace lid Furnace lid cleaning device characterized by attaching members.