JPH08291901A - Dust-removing apparatus for smelt-discharging part - Google Patents

Abstract

PURPOSE: To provide a dust-removing apparatus for a smelt-discharging part which does not require manual work in removing dust and can effectively carry out dust removal. CONSTITUTION: A dust-removing apparatus 1 is provided with position-adjusting means 4, 5 for adjusting the location of a dust-removing means 2 in forward and backward directions and in vertical directions. Either a drilling device (e.g. electric hammer drill) or a dust-removing device 22b is selectively and replaceably attached to the dust-removing means 2. When a boiler is started up, the drilling device can be selectively used to drill a through hole in a dust wall (S) formed in a smelt-discharge opening F1 , and while the boiler is being operated, the dust removing device 22b is selectively used to remove dust adhering on an inner face P1 of a smelt ladle (P) and the dust is made to fall into a smelt tank.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for removing dust adhering to a smelt discharge part of a recovery boiler. More specifically, the present invention relates to a dust removing device that removes the dust adhering to the wall of the smelt discharge port and the dust attached to the inner peripheral surface of the smelt discharge gutter.

[0002]

2. Description of the Related Art Conventionally, in a recovery boiler, recovery of smelt accumulated on the bottom of a furnace is performed by a so-called smelt spout, which is a gutter-shaped smelt discharge gutter provided on the side surface of the bottom of the furnace. That is, the soda component contained in the black liquor of the fuel becomes a liquid, so-called smelt, which is accumulated at the bottom of the furnace, and this smelt is discharged outside the furnace using a smelt discharge gutter. It is collected by being discharged into a tank (smelt tank).

By the way, in the process of recovering the soda component using such a smelt discharge gutter, the amount of the soda component accumulated at the bottom of the furnace fluctuates due to fluctuations in the load of the furnace. Along with this, the flow rate of smelt flowing through the smelt discharge gutter also changes.
Therefore, when the flow rate decreases, the smelt flowing near the surface of the smelt discharge gutter is cooled and adheres to the inner peripheral surface of the smelt discharge gutter. So-called dust adhesion occurs. The cooling adhesion of the smelt is promoted by the water cooling of the smelt discharge gutter in order to prevent the smelt discharge gutter from burning due to the high temperature of the smelt. If the adhered dust is left as it is, the adhered dust grows and the smelt discharge port and the smelt discharge gutter provided on the side surface of the furnace bottom are closed.

Therefore, in the recovery boiler, as one of the daily maintenance work, the work of removing the adhering dust is performed during the discharge of the smelt. This removal work is usually performed by a worker manually peeling dust from the inner surface of the smelt discharge gutter using a rod-shaped tool called a lancing rod.
Then, it is dropped into the smelt tank and removed.

However, the work of removing the dust adhering to the smelt discharge port and the inner circumference of the gutter is carried out while the recovery boiler is operated and the smelt is flowing. Will be done. Therefore, it is a very dangerous work even by a skilled worker.

Further, as described above, a rod-shaped tool called a lancing rod is used for the work of removing the adhered dust, but since the lancing rod is a mere round rod, the smelt discharge trough In order to reliably remove the dust adhering to the inner peripheral edge, it is necessary to perform a large number of times of lancing, which requires a long time.

By the way, at the time of starting the boiler, the smelt remaining in the furnace is solidified and adheres to the inside of the furnace in a wall shape, blocking the smelt discharge port provided at the bottom of the furnace (hereinafter, Since such an adhered state is called a "dust wall", when the boiler operation is started in that state, the melted smelt rapidly flows out of the furnace as the temperature inside the furnace rises, causing so-called smelt / water. May cause an explosion. Therefore, in order to prevent this, the dust wall blocking the smelt discharge port is removed by a worker's hand before starting the boiler.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and eliminates the manual work for removing dust, and also provides a smelt discharge unit capable of performing dust removal safely and efficiently. An object is to provide a dust removing device (hereinafter, simply referred to as “dust removing device”).

[0009]

DISCLOSURE OF THE INVENTION A dust removing device for a smelt discharging portion of the present invention comprises a dust removing means for removing dust adhering to the smelt discharging portion, a reciprocating driving means for reciprocating the dust removing means, and a smelt discharging portion. Positioning means for determining the tip position of the dust removing means in the section.

Here, the dust removing means includes a punching device for punching through a dust wall formed at the discharge port of the smelt discharge part and an inner peripheral surface of the smelt discharge provided continuously to the discharge port. A dust removing tool for removing the attached dust is provided, and the punching device and the dust removing tool are selectively exchanged for use. Moreover, the positioning means includes a front-back position adjusting means for moving the dust removing means forward and backward with respect to the smelt discharging portion, and a height position adjusting means for determining the height position of the dust removing means.

It is preferable that the dust removing means includes a driving member, and the punching device and the dust removing tool are connected to the driving member via a shock absorber, and the dust removing tool is a smelt discharge device. It is preferable to have a shape that can be slidably fitted to the inner peripheral surface of the gutter.

The front-rear position adjusting means includes a traveling rail laid in the front-rear direction with respect to the smelt discharge portion, a traveling frame provided on the traveling rail so as to be capable of traveling together with the dust removing means, and the traveling frame. A driving mechanism for driving the frame, the front and rear positions of the dust removing means are adjusted by driving the traveling frame in the front and rear direction, and the height position adjusting means holds the dust removing means. A frame and a hinge mechanism that supports the suspension frame on a traveling frame that can travel in the front-rear direction with respect to the smelt discharge portion, and a height position of the dust removing means adjusts an inclination angle of the suspension frame. Adjusted by.

[0013]

In the dust removing work by the dust removing device of the present invention, the punching device and the dust removing tool of the dust removing means are selectively exchanged for use. Therefore, when the boiler is started up, the punching device is used as the dust removing means. By selecting, a through hole can be formed in the dust wall formed at the smelt discharge port. Then, when the boiler starts up and the melted smelt is discharged from the smelt discharge gutter, this time, the dust removing tool is selected as the dust removing means, and the dust remaining on the smelt discharge gutter is separated and dropped. be able to.

At that time, the dust removing means can be adjusted in position in the front-rear direction (left and right in FIGS. 1 and 3) and the height (up and down direction in FIGS. 1 and 3) by the positioning means. The working positions of the punching device and the dust removing tool can be freely set and changed.

Since the dust removing means is reciprocated by the reciprocating driving means, when the dust removing tool is selected and used, the dust removing tool is reciprocated. Dust adhering to the inner peripheral surface of the smelt discharge gutter can be efficiently separated and dropped. Moreover, by performing the dust removal work while appropriately moving and adjusting the position of the dust removing tool according to the inclination of the smelt discharge gutter, the dust can be peeled off and dropped over the entire length of the smelt discharge gutter.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described based on embodiments with reference to the accompanying drawings, but the present invention is not limited to such embodiments.

A dust removing device according to the present invention is shown in FIGS. 1 and 3, and this dust removing device 1 is an inner peripheral surface of a smelt discharge gutter (hereinafter referred to as a smelt discharge part) (smelt discharge part) in a recovery boiler. This is for automatically removing dust (mainly, smelt that is cooled and solidified) attached to a smelt discharge port (smelt discharge portion) provided on the side surface of the furnace bottom. More specifically,
When the boiler is started up (see FIG. 1), a through hole is opened in the dust wall S formed in the smelt discharge port F ₁ of the furnace F of the boiler, and the dust wall S melts and collapses as the boiler operates. Then, while preventing the smelt from flowing out suddenly,
During operation of the boiler (see FIG. 3), dust adhering to the inner peripheral surface P ₁ of the smelt sport P connected to the furnace F of the boiler, which is continuously provided to the smelt discharge port F ₁ , is peeled off. It is to be dropped into a smelt tank (not shown).

As shown in FIG. 6 (b), the smelt spout P is a gutter-shaped member having an upper opening and a substantially U-shaped cross section, and is provided on the bottom side surface of the furnace F. It is provided so as to be inclined downward from the discharge port F ₁ .

Further, the dust removing device 1 according to the present invention.
Is a dust removing means 2 including a dust removing mechanism 22 including a punching device 22a and a dust removing tool 22b which are selectively exchanged, a reciprocating driving means 3 for reciprocating the dust removing means 2, and the dust removing means. Positioning means (front-back position adjusting means 4 and height position adjusting means 5) for positioning the mechanism 22 is provided as a main part.

In the present embodiment, as shown in FIG. 1, the dust removing device 1 is installed on the installation floor f arranged above the floor surface on which the furnace F is installed, and the above-mentioned smelt is used. The tank is located below this floor. Hereinafter, the present device 1 will be described in detail for each component.

A. Dust removing means 2: Dust removing means 2
As shown in FIGS. 1 and 3, the tip has a dust removing mechanism 22 including a perforating device 22a and a dust removing tool 22b that are selectively used for replacement, and the perforating device 22a that is selectively used. Or dust remover 2
2b is connected to a crank device (reciprocating drive means) 3 via a shock absorber 23 and a drive member 21, and can be reciprocated with a stroke S by driving the crank device 3. In addition, this stroke S
Is about 200 mm in this embodiment.

More specifically, the dust removing means 2 is composed of a driving member 21, a dust removing mechanism 22, and a shock absorber 23 for connecting the both, and the driving member 21 is a pair of driving member guide rollers which will be described later. It is held in parallel with the suspension frame 51 by 53 and 54. In addition, the drive member 2
1 has a base end connected to a crank arm 31 of the crank device 3 and a shock absorber 2 at the tip thereof.
3 are formed.

As shown in FIGS. 1 and 3, the driving member 21 is composed of a front divided body 21a and a rear divided body 21b, and these two divided bodies 21b, 21b are joint portions 6.
Are joined by. As shown in FIG. 2, the joint portion 6 includes a front divided body 21a and a rear divided body 21b.
The two divided bodies 21a and 21b are detachably connected and fixed by bolting the flanges formed at the facing portions of the above. Then, the punching device 22a and the dust removing tool 22
The replacement of b is performed by replacing the front divided body 21a arranged on the tip side of the joint portion 6.

The shock absorber 23 comprises a connecting member 24 and a pair of shock absorbing springs 25, 25 as main parts. One end of the connecting member 24 is slidably inserted into the tip portion of the front divided body 21a so as to be slidable in the axial direction (see arrows in FIGS. 1 and 3), and the other end thereof is the punching device 22a or the dust removing tool. It is connected and fixed to any one of 22b. The buffer springs 25, 25 are connected to the connecting member 24.
Is attached to the front divided body 21a so as to sandwich one end thereof, and restriction wheels 26, 26 are attached to both end portions thereof.

As a result, the connecting member 24 is elastically locked to the tip of the driving member 21 by the buffer springs 25, 25, and the connecting member 24 (that is, the dust removing mechanism 22) is predetermined. When the above load, for example, a load of 250 kg or more is applied, the load is absorbed (buffered) by the spring elasticity of the buffer springs 25, 25.
It is set to be done. The cushioning by the spring elasticity of the cushioning springs 25, 25 is supposed to act even if a load is applied to the connecting member 24 in either the front or rear direction, as is clear from the drawing.

As shown in FIG. 2, the punching device 22a punches a through hole in the dust wall S formed in the smelt discharge port F ₁ when the boiler is started up. For example, a commercially available electric hammer is used. A drill is used. And
The electric hammer drill (piercing device 22a) is fixed to the other end of the connecting member 24 via a perforating device holding member 291. The punching device holding member 291 and the connecting member 24
For connection with, a tightening bolt 292 which also serves as a rotation stop pin is used in order to prevent rotation of the punching device holding member 291 during operation of the electric hammer drill. In this embodiment, a commercially available electric hammer drill is used as the drilling device 22a, but the drilling machine is not limited to this, and a rock drilling machine or the like can also be used.

On the other hand, in the dust remover 22b, the smelt melted by the boiler rising up is smelt sport P.
It is for peeling off and dropping the dust formed by the smelt remaining on the inner peripheral surface P ₁ of the smelt spout P when it comes to flow out from the smelt, as shown in FIG.
It has a shape that can be slidably fitted to the inner peripheral surface P ₁ of the smelt sport P. Specifically, as shown in FIGS. 3 and 6 (a), specifically, the rod member 27 and the wing-shaped dust removing member 28 are provided. The rod member 27 has a proximal end fixed to the other end of the connecting member 24, and a substantially U-shaped dust removing member 28 is welded and fixed to the distal end of the rod member 27 with both ends facing downward. . The blade width L of the blade-shaped dust removing member 28 is set to be slightly smaller than the opening width of the smelt sport P, as shown in FIG. 6 (b). For example, the blade width L is about 130 mm when the opening width of the smelt sport P is 150 mm.

Due to the dust removing tool 22b having such a structure, when the driving member 21 is reciprocally moved, the dust removing member 28 is also reciprocally moved. As a result, the dust removing member 28 is swollen.
The dust adhering to the smeltsport P collides against the inner peripheral surface P _{1 of the} and is removed by being peeled off and dropped.

B. Reciprocating drive means (crank device) 3: The crank device 3 is a drive member 21 of the dust removing means 2.
Is reciprocated and is fixed to a suspension frame 51 described later. The crank device 3 includes a drive motor 3
2 and is rotationally driven via the rotary shaft 33 of the drive motor 32. By this rotational driving, the reciprocating motion is given to the driving member 21 of the dust removing means 2. In other words, in other words, this rotation driving causes the dust removing mechanism 22 provided at the tip of the driving member 21 to reciprocate.

C. Front-rear position adjusting means 4: The front-rear position adjusting means 4 is for moving the dust removing device 1 forward and backward with respect to the smelt spout P, and includes two traveling rails 41, 41 and the traveling rail 41. A traveling frame 42 provided so as to be capable of traveling, and this traveling frame 42
And a drive mechanism 43 for driving the. FIG.
In addition, in FIG. 3, an example of a state in which the dust removing device 1 is retracted is shown by a virtual line.

The traveling rails 41, 41 are laid on the installation floor f at predetermined intervals in parallel with the smeltsport P in the front-rear direction, and the traveling rail 41 is provided below the traveling frame 42. Running wheels 4
4, 44, ... Can run. As the drive mechanism 43, as shown in FIG. 5, a rack and pinion mechanism 43 is preferably adopted, and the pinion 43a is
It is connected to the drive motor 45 via a rotary shaft 46.
The drive motor 45 is connected and fixed to the traveling frame 42 via a mounting plate 47, and
The front-back driving force generated by the pinion mechanism 43 is transmitted to the traveling frame 42. Reference numeral 43b in the drawing denotes a rack that meshes with the pinion 43a.

Guide wheels 48, 48, respectively are provided on the inner surfaces of the traveling wheels 44, 44, ...
Are provided, and the outer sides of the traveling rails 41, 41 prevent the guide wheels 48, 48 from swinging in the vertical direction to prevent the traveling wheels 44, 44 ,. Plates 49, 49 are provided. Further, the traveling wheels 44, 44, ... Are respectively provided with braking devices (not shown), and when the positioning of the cleaning member 22 of the dust removing means 2 is completed, the device 1 can be fixed at the positions. Has been done.

D. Height position adjusting means 5: The height position adjusting means 5 is for adjusting the height positions of the dust removing means 2, specifically, the punching device 22a and the dust removing tool 22b. A suspension frame 51 that holds the second drive member 21 and a hinge mechanism 52 that supports the suspension frame 51 on the traveling frame 42 are mainly configured.

The hanging frame 51 is, as shown in the drawing,
The driving member guide rollers 53 and 54 are provided. The drive member guide rollers 53 and 54 are arranged on the lower surface of the suspension frame 51 at a predetermined interval in the front-rear direction. Further, the drive member guide rollers 53, 54 are provided with a pair of rollers 53a, 53b and 54a, 54b respectively on the upper and lower sides, and the drive member 21 is sandwiched between these rollers 53a, 53b and 54a, 54b. Holds (see FIG. 4). Therefore, the drive member 21 is held in parallel with the suspension frame 51 in a state where the reciprocating motion is always permitted. The drive member guide roller 5
Guide plates 59, 59, ... For preventing the driving member 21 from falling off are provided on both side surfaces of each of the parts 3, 54 (see FIG. 5).

On the other hand, the hinge mechanism 52 is used for the hanging frame 5.
A pair of hinges 52a and 52b provided in the front-back direction
The hinge 52b on the rear side (on the base end side of the suspension frame 51) is connected to a drive motor 55 installed on the traveling frame 42. More specifically,
As shown in FIG. 5, the hinge 52b has a nut body 5
6 is provided, and a screw screw 57 is screwed into the nut body 56 so as to penetrate in the vertical direction. The upper end of the screw screw 57 and the drive motor 55 are connected by a bevel gear mechanism 58. The drive motor 55 serves as a drive source for adjusting the height position of the dust removing mechanism 22 of the dust removing means 2.

Further, the front hinge 52a connects the suspension frame 51 and the traveling frame 42, and as will be described later, the inclination angle of the suspension frame 51 is changed in cooperation with the rear hinge 52b. It is a thing. That is, when the drive motor 55 is driven, the screw screw 57 is rotated by the bevel gear mechanism 58. As a result, the nut body 56 screwed with the screw screw 57 moves up and down relatively with respect to the axial direction of the screw screw 57.
A rotation operation is given to the suspension frame 51 with the rotation axis 2a. As a result, the inclination angle θ of the suspension frame 51 is changed as shown in FIG. 4, and the height position of the tip of the dust removing means 2, that is, the height position of the punching device 22a or the dust removing tool 22b is adjusted. .

As the height position adjusting means 5, a hydraulic cylinder mechanism may be used instead of the combination of the drive motor 55, the bevel gear mechanism 58 and the screw screw 57.

Next, a description will be given respectively of the work of punching the dust wall S when the boiler is started up by the dust removing device 1 configured as described above, and the work of removing the dust adhering to the smelt sport P during the operation of the boiler. .

A. When starting up the boiler: (1) First, when starting the drilling work of the dust wall S,
Move the dust removing device 1 to a predetermined working position (see FIG. 1).
reference). This movement is performed by driving the drive motor 45 of the front-back position adjusting means 4 and driving the rack and pinion mechanism 43 via the rotary shaft 46. Specifically, by driving the rack and pinion mechanism 43, the traveling frame 42
Driving force in the front-back direction is applied to the traveling wheels 44, 44,
... travel on the traveling rails 41, 41, and the front-rear direction position of the dust removing device 1 is adjusted.

More specifically, at the start of work, the dust removing device 1 adjusts the front-rear position to bring the tip of the drilling device 22a (electric hammer drill) into contact with the dust wall S as shown in FIG. It is located at the position (drilling work start position). When the position adjustment in the front-rear direction is completed, the traveling wheels 44, 44, ... Are fixed at that position by the brake device (not shown).

(2) Subsequently, the height position of the punching device 22a is adjusted if necessary in accordance with the position adjustment in the front-rear direction. This height position adjustment is performed by, for example, the punching device 22.
When it is desired to lower the height position of a, the drive motor 55
Drive the screw screw 57 to the nut body 56
Is applied in the direction of entering (the direction in which the screw screw 57 is screwed in in FIG. 4). As a result, the position of the nut body 56 moves relatively upward with respect to the screw screw 57, and a negative tilt angle θ is given to the suspension frame 51. As a result, depending on the magnitude of this tilt angle θ. The height position of the punching device 22a is lowered.

On the contrary, when it is desired to raise the height of the punching device 22a, the screw 57
Is rotated in the direction of withdrawing from the nut body 56 (the direction in which the screw screw 57 is pulled out upward in FIG. 4) to make the inclination angle θ of the suspension frame 51 positive, whereby the height position of the punching device 22a is adjusted. Can be raised.

In the illustrated embodiment, the punching device 22a can be operated by only advancing the dust removing device 1 with the suspension frame 51 having an inclination angle of 0 degrees (that is, the suspension frame 51 is horizontal). Since the tip of the is positioned at the drilling work start position, it is not necessary to adjust the height position at the start of the work.

(3) When the position adjustment of the front and rear and the height direction position of the dust removing device 1 is completed in this way, next, the power of the punching device (electric hammer drill) 22a is turned on and the crank device is turned on. Drive motor 3
When the dust removing means 2 is driven to reciprocate, the electric hammer drill opens a through hole in the dust wall S. The number of through holes is not limited to one, and a plurality of through holes may be opened by repeating the operations (1) to (3) in some cases.

At this time, the driving member 21 of the dust removing means 2 is suspended by the driving member guide rollers 53 and 54 in such a state that the reciprocating motion thereof is allowed.
The dust removing means 2 does not fluctuate even when the crank device 3 is driven, because it is held in parallel with
Since the punching device 22a is connected to the driving member 21 via the shock absorber 23, even if an excessively large load is applied during the punching, the load is due to the spring elasticity of the shock absorber springs 25, 25 of the shock absorber 23. Can be buffered.

(4) When the work of punching the dust wall S is completed in this way, the dust removing device 1 is once retracted, the bolts of the joint portion 6 are removed, and the punching device 22a is replaced with the dust removing tool 22b. Then, preparations are made for the dust removal work of the smelt sport P performed subsequent to the drilling work.

B. During boiler operation: (1) During operation of the boiler, the smelt that is melted and discharged through the smelt sport P is separated from the dust formed by what remains on the inner peripheral surface P ₁ of the smelt sport gutter P. Although the dropping work is performed, also in the peeling / falling work, the front-rear position and the height position for moving the dust removing device 1 to the predetermined working position are first adjusted as in the case of starting the boiler. . Note that the height position adjustment in that case is usually adjusted so that the dust removing tool 22b is located at the root portion A of the smelt sport P (see FIG. 3) for daily dust removing work.

(2) When the positioning of the dust removing device 1 in the front-rear direction and the position in the height direction is completed, next, the drive motor 32 of the crank device 3 is driven, and the dust removing means 2 is reciprocated. By the reciprocating operation of the dust removing means 2, the inner peripheral surface (particularly the peripheral edge portion) P _{1 of the} smeltsport gutter P is positioned by the positioning of the front and rear and the height position.
The dust removing tool 22b slidably fitted to the swivel member reciprocates to collide the wing member 28 with the inner peripheral surface P ₁ of the smelt sport gutter P, whereby the smelt sport gutter P
The dust adhering to the inner peripheral surface P ₁ is separated and dropped. In this case, even if an excessive load is applied to the dust removing tool 22b due to the dust removing tool 22b being caught by the dust strongly adhered to the smelt spout P, the load is still applied to the buffer springs 25, 25 of the buffer device 23. It is the same as in the case of the punching device 22a that is buffered by the spring elasticity of.

(3) When the dust removing work at the work starting position A is completed in this way, the dust removing device 1 is retracted to the next work position and the above work is performed again.
For example, when the next work position is the position shown in B in FIG. 7, the front-rear position adjusting means 4 retracts the dust removing device 1 to the intermediate position between the traveling rails 41, 41, and the height position adjusting means 5 Dust remover 22
After the height position of b is readjusted (corrected downward), the dust removing means 2 is reciprocated to perform dust separation / falling work (see FIG. 7).

Further, when the dust removing work at the work position B is completed, the dust is removed while moving the work position appropriately from the upstream side to the downstream side of the smelt sport P by the procedure such as the work position C in FIG. By performing the peeling / falling work of the above, it is possible to perform the peeling / falling work of dust over the entire length of the smeltsport P. In the cases shown in FIGS. 7 and 8, as is apparent from the drawings, the screw screw 57 is given an operation of entering the nut body 56 every time the front-rear position of the dust removing device 1 is changed. Therefore, the inclination angle θ of the suspension frame 51 is gradually changed to the negative side.

As described above, according to this embodiment, the working position is set to the smelt sport P without manually removing dust.
It is possible to perform the dust removal work while appropriately moving from the upstream side to the downstream side. Therefore, the worker
You can operate the dust remover 1 from a safe place,
It is easy to ensure work safety.

The present invention has been described above based on the embodiments, but the present invention is not limited to the embodiments and various modifications can be made. For example, in the above-described embodiment, the dust removing member 22b is provided with a substantially U-shaped dust removing member 28 facing downward, but the shape of the dust removing member 28 is not particularly limited to this shape, and dust removing member 28 is not limited to this shape. If the shape is possible, the design can be changed as appropriate.

Further, the dust removing work of this embodiment is appropriately performed in stages along the inclination of the smelt sport P (that is, the completion of the dust removing work at one work position of the smelt sport P is confirmed. After that, the dust removing device 1 is retracted to the next work position, and then the height position of the dust removing means 2 is re-determined. This is done by using a control device such as a microcomputer. Alternatively, the positioning work may be automatically performed in cooperation with the above operation.

Further, in the present embodiment, the case where the present invention is applied to the recovery boiler has been described as an example, but the present invention may be applied to any device having a smelt discharge mechanism of this kind, and It is not limited.

[0055]

As described above in detail, according to the dust removing apparatus of the present invention, it is not necessary for the worker to work in a high temperature environment to remove dust, and the dust removing device has been used up to now. Since it is possible to mechanize the conventional dust removal work, it is possible to obtain an excellent effect that the safety of the worker is achieved and the dust removal efficiency is improved. Moreover, since this dust removing device is provided with a positioning means, and the working position can be adjusted accordingly, it is possible not only to perform the dust removing work over the entire length of the smeltsport, but also to perform this removing work only at the aimed position. The effect is also obtained.

In a preferred embodiment of the present invention,
Since the dust removal during boiler operation is performed by the dust removal tool provided with the dust removal member adapted to the inner peripheral surface of the smeltsport at the tip, a large amount of dust can be removed at one time. Therefore, the dust removal efficiency can be further improved.

Further, since the punching device and the dust removing tool can be selectively exchanged and used as the dust removing means, a single device can perform a series of dust removing operations at the time of starting the boiler and during the operation of the boiler. Therefore, it is possible to reduce the cost of equipment investment accompanying mechanization of work at a low cost.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment when a punching device is selected in the dust removing device according to the present invention.

FIG. 2 is an enlarged explanatory view showing a state of punching work of the punching device.

FIG. 3 is an explanatory diagram showing an example in which a dust removing tool is selected in the dust removing apparatus according to the present invention.

FIG. 4 is a partially enlarged explanatory view showing the operation of the vertical position adjusting means of the dust removing apparatus.

5 is a cross-sectional explanatory view taken along line III-III of the dust removing device shown in FIG.

FIG. 6 shows a dust removing tool of the dust removing apparatus, and FIG.
FIG. 6A is an enlarged perspective view of the wing member, and FIG. 6B is an explanatory view showing a state in which the wing member is fitted in the smelt sport.

FIG. 7 is an explanatory view showing a process (middle part of the smelt sport) in which the dust removing device removes dust from the smelt sport.

FIG. 8 is an explanatory diagram showing a process of removing dust from the smelt sport by the dust removing device (a tip portion of the smelt sport).

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Dust removing device 2 Dust removing means 21 Drive member 21a Front division body 21b Rear division body 22 Dust removal mechanism 22a Punching device 22b Dust removal tool 23 Buffer device 24 Connecting member 25 Buffer spring 28 Dust removing member 3 Crank device (reciprocating drive) 31) Crank arm 32, 45, 55 Drive motor 4 Front-rear position adjusting means (positioning means) 41 Traveling rail 42 Traveling frame 43 Rack and pinion mechanism (drive mechanism) 44 Traveling wheel 47 Mounting plate 48 Guide wheel 49 Derailing prevention guide Plate 5 Height position adjusting means (positioning means) 51 Hanging frame 52a, 52b Hinge (hinge mechanism) 53, 54 Drive member guide roller 56 Nut body 57 Screw screw 58 Bevel gear mechanism 59 Guide plate 6 Joint part F Furnace F ₁ Smelt Outlet Belt discharge portion) P smelt discharge gutter, Semeru toss port (smelt discharge unit) S dust wall

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Koichi Chitose 2-5-5 Nakajima, Nishiyodogawa-ku, Osaka City Komai Construction Machinery Co., Ltd.

Claims (7)

[Claims] 1. A dust removing means for removing dust adhering to a smelt discharge portion, a reciprocating driving means for reciprocating the dust removing means, and a positioning means for determining a tip position of the dust removing means in the smelt discharge portion. A dust removing device for a smelt discharge part, which is characterized in that 2. The dust removing means attaches to a piercing device for piercing a dust wall formed at a discharge port of a smelt discharge part, and an inner peripheral surface of the smelt discharge provided continuously to the discharge port. The dust removing device for removing spilling dust, wherein the perforation device and the dust removing device are selectively exchanged for use. 3. The dust removing means comprises a drive member,
The dust removing device for a smelt discharge part according to claim 2, wherein the punching device and the dust removing tool are connected to the drive member via a shock absorber. 4. The dust removing device for a smelt discharging part according to claim 2, wherein the dust removing tool is shaped so as to be slidably fitted to the inner peripheral surface of the smelt discharging gutter. 5. The positioning means comprises a front-back position adjusting means for moving the dust removing means forward and backward with respect to the smelt discharging portion, and a height position adjusting means for determining a height position of the dust removing means. The dust removing device of the smelt discharge part according to claim 2. 6. The front-rear position adjusting means, a traveling rail laid in the front-rear direction with respect to the smelt discharge part, a traveling frame provided so as to be capable of traveling on the traveling rail together with the dust removing means, and the traveling. 6. A dust removing device for a smelt discharge part according to claim 5, further comprising a drive mechanism for driving a frame, wherein the front and rear positions of the dust removing means are adjusted by driving the traveling frame in the front and rear direction. . 7. The height position adjusting means comprises a suspension frame that holds the dust removing means, and a hinge mechanism that supports the suspension frame on a traveling frame that is capable of traveling in the front-rear direction with respect to the smelt discharge portion. The dust removing device for a smelt discharging part according to claim 5, wherein the height position of the dust removing means is adjusted by adjusting an inclination angle of the suspension frame.