JPH08296977A - Industrial furnace lining support structure and anchor member mounting jig - Google Patents

Abstract

PURPOSE: To achieve an easy and speedy mounting work by installing a support metal fitting fixedly on a fixing member of an industrial furnace and fitting an area under head of a nut threaded with a screw shaft of an anchor member in a cut depth of the support metal fitting and turning the anchor member or the nut relatively. CONSTITUTION: In the case when an anchor member 10 is mounted on fins 2 placed between water pipelines 1, a support metal fitting 11 is fixedly installed on the fins 2 with a specified spacing by welding or the like where a screw shaft member 12 of the anchor member 10 is mounted on the support metal fitting 11. A nut 14 is preliminarily engaged with the screw shaft member 12 of a bolt 18 of the anchor member 10 and the tip of the screw shaft 12 is arranged to project out from the nut 14 to such a degree that it may not hit against a butting part 16 of the support metal fitting 11. Then, the screw shaft 12 in the underhead area of the nut 14 is slidingly fitted in a cut area of the support metal fitting 11. Then, if an anchor brick 4 or the nut is turningly fastened, the tip of the screw shaft 12 will hit against the butting area immediately by one or two turns so that the anchor member 10 may be mounted on the support metal fitting 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lining support structure and an anchor member mounting jig for an industrial kiln.

[0002]

2. Description of the Related Art In various industrial kilns, such as waste incinerators, a water pipe is buried in the wall of the furnace and the water in the water pipe is cooled while the water in the water pipe is cooled. Some have been designed to use waste heat by making it hot water and collecting it as steam or hot water.

As a lining structure for this type of furnace, there is a conventional one disclosed in Japanese Utility Model Publication No. 2-7432. That is, as shown in FIG. 14 which is a partial cross section perpendicular to the water pipe, and FIG. 15 is a cross section viewed from the same side, the fins 2 connecting the side faces of the water pipes 1, 1 ... A long so-called high nut 3 is fixed by welding.
A screw 5 which is inserted into a ceramic anchor brick 4 having a trapezoidal cross section and has a head 5a fitted therein is filled with a filler 6 and is non-rotatable, and is screwed by rotating the anchor brick 4. The anchor bricks 4 are fixed by tightening and fastening, and then the anchor refractory 4 is used as an anchor, and the irregular refractory material 7 has the same thickness as the end surface of the anchor bricks 4 (usually 7
The inner lining is constructed by spraying or pouring from 0 to 100 mm).

[0004]

However, in the above conventional structure, the high nut 3 fixed to the fins 2 of the water pipes 1 and 1 is used.
When a bolt 5 for fixing the anchor brick 4 is screwed in, the high nut 3 has a shaft length of the high nut 3 to reduce wobble of the anchor brick 4 and stabilize it when the anchor brick 4 is rotated and screwed. Since the length is about 20 mm, the amount of screwing of the bolt 5 is large, the number of times the anchor brick 4 is turned is increased accordingly, the installation of the anchor brick 4 takes remarkably time, and the number of anchor bricks 4 is large. In this case, it is not an easy task to rotate and attach the heavy-weight anchor brick 4 while supporting it with a hand, and the operator may hurt his wrist.

The high nut 3 is welded to the fins 2 at the time of connecting the water pipes 1 and 1 with the fins 2 in a normal factory, and is delivered to the construction site of the furnace to assemble the water pipes 1, 1 ... The procedure is for mounting, but during that time, it may be left for a long time (generally, 2 to 3 months) with the high nut 3 attached. During the leaving period, rust and dust adhered to the threaded portion of the high nut 3 and the anchor brick 4
The bolt 5 cannot be screwed in smoothly, and it is necessary to re-thread the screw again.

Further, when the inner lining is repaired after the furnace has been used for several years, the anchor brick 4 is damaged by rusting or oxidation of the threaded portion of the high nut 3 or deformation of the threaded portion due to impact during dismantling the lining. It may not be possible to remove it. Therefore, it becomes impossible to reuse the high nut 3 at the time of repair, and it becomes necessary to re-weld a new high nut with the existing high nut 3 left. There was a problem. The same can be said for the case of the iron shell structure having no water pipe.

In view of this, the present invention eliminates the mounting structure by screwing the anchor member, and allows the anchor member to be mounted by the minimum necessary pivoting operation, thereby achieving easy and speedy mounting work. It is an object of the present invention to provide a lining support structure and an anchor member attachment jig that can be used.

[0008]

As a means for solving the problems of the above-mentioned prior art, the present invention provides a notch portion into which a screw shaft portion of an anchor member serving as an anchor of an irregular shaped refractory can be loosely fitted. The supporting metal fittings are fixedly arranged on the fixing member of the furnace at a predetermined interval, and the neck portion of the nut screwed to the screw shaft portion of the anchor member is attached to the notch of the supporting metal fittings. By fitting and rotating the anchor member or the nut relatively, the tip of the screw shaft portion of the anchor member comes into pressure contact with the abutment portion on the side of the fixed member, and the reaction force of the screw member supports the anchor member via the nut. It is characterized in that it is fixed to.

According to a second aspect of the present invention, the support fitting has a side surface shape L.
A U-shaped cut portion is formed from an end edge of one side of the shaped piece, and a plate is provided on the other side of the piece so as to extend parallel to the one side and directly above the cut portion. The lower edge is the abutting part. According to a third aspect of the present invention, in the support fitting, a slit-shaped notch is formed in a part of the annular member in the axial direction, and the inner surface of the notch facing the notch serves as an abutting portion. Especially.

According to a fourth aspect of the present invention, there is provided a counterbore portion which engages two corresponding surfaces of the nut with an edge portion of the cut portion and restrains the nut non-rotatably.

According to a fifth aspect of the present invention, the anchor member has an anchor brick that is non-rotatably inserted into the screw shaft portion, and the sixth aspect is such that a Y-shape is formed at the end of the screw shaft portion. It has a locking portion.

Further, a seventh aspect of the present invention is provided with a recess into which an end portion of an anchor brick, which is mounted by a rotating operation, can be fitted to a support fitting arranged on a fixing member of the furnace. An impact wrench and a rotary drill are provided at the back of the recess. A jig for attaching an lining anchor member of an industrial kiln in which a friction member made of a rubber plate, a polymer material or the like is fixed to the inner bottom surface of the recessed portion is provided.

[0013]

When the anchor member is attached, the under-neck portion of the nut of the screw shaft portion to which the nut is screwed in advance is slid sideways into the notch of the support fitting to be fitted, and then the anchor member or the nut is relatively mounted. With a slight rotation, the anchor member is screwed into the nut and enters, immediately after which the tip of the anchor member abuts against the abutment portion to stop the entry. The pressure contact with the contact portion is strengthened, and the anchor member is fixed. The anchor liner thus installed is used as an anchor to construct an unfixed refractory for the liner, thereby constructing the liner.

According to a seventh aspect of the present invention, when the anchor member has an anchor brick, a recess is fitted in an end portion of the anchor brick,
When the jig is rotated by driving the rotary tool while supporting the anchor brick in the recess, the anchor brick is rotated through the friction member on the inner bottom surface of the recess to tighten the jig.

[0015]

Embodiments of the present invention will now be described with reference to the drawings.
The same members as those in FIGS. 1 and 2 will be described using the same reference numerals.

FIGS. 1 to 3 show an embodiment in which the anchor member 10 is attached to the fin 2 between the water pipes 1 and 1, and the support fitting 11 is welded to the fin 2 at a required interval. The screw shaft portion 12 of the anchor member 10 is attached to the support fitting 11.

As shown in a sectional view of FIG. 3 (A), a front view of FIG. 3 (B) and a plan view of FIG. 3 (C), the support fitting 11 has an L-shaped side surface (angled shape). U-shaped notch 13 having a width into which the screw shaft portion 12 can be fitted as closely as possible from the edge of one side 11B of the portion 11A of the shape 11A, and the other side is parallel to the one side 11B. A nut 14 that extends and is screwed to the screw shaft portion 12 between the one side 11B and the side 11B.
One end of the rectangular plate-like plate 15 is integrally fixed by welding so as to be located immediately above the cut portion 13 with a gap slightly larger than the thickness of the plate 13. The lower edge of the plate 15 serves as the abutment portion 16. . The plate 15 serves as a standard for making one side 11B having the cutout 13 parallel to the fin 2 when the support fitting 11 is welded to the fin 2, and increases the welding length to improve the welding strength. Has the role of increasing.

A counterbore 17 is formed at the edge of the notch 13 so as to be lowered by one step. The counterbore 1
Two corresponding surfaces of the nut 14 are engaged with the nut 7, and the nut 14 is non-rotatably supported as shown in FIG.

An anchor member 10 in the embodiment shown in FIGS. 1 and 2 is a ceramic anchor brick 4 having a substantially trapezoidal cross section similar to the conventional anchor member shown in FIGS.
The anchor brick 4 includes a bolt 18 having a screw shaft portion 12 which is inserted through the anchor brick 4, and a nut 14 which is screwed into the screw shaft portion 12. The bolt 18 is provided in the recess 4 a of the anchor brick 4.
The head portion 18a is housed, and the recessed portion 4a is filled with the filling material 6 to embed the head portion 18a.

Therefore, in this embodiment, the anchor member 1
The nut 14 is screwed in advance on the screw shaft portion 12 of the bolt 18 of 0, and the tip of the screw shaft portion 12 is projected from the nut 14 to the extent that it does not hit the abutting portion 16 of the support fitting 11.
Next, the screw shaft portion 12 of the under-neck portion of the nut 14 is slid and fitted into the notch portion 13 of the support fitting 11, and then the anchor brick 4 or the nut 14 is rotated and tightened.
The tip of the screw shaft portion 12 abuts on the abutting portion 16 by rotating twice.
Immediately hit, and if further tightened, the nut 14 presses one side 11B of the support member 11 downward, whereby the anchor member 10 is firmly attached to the support fitting 11.

After attaching all the anchor members 10 in this manner, the irregular refractory material 7 is sprayed or poured so as to be flush with the end face of the anchor brick 4 to construct the lining.

FIG. 3D shows an example in which the support fitting 11 is simplified. The support fitting itself is formed by a side-shape U-shaped part 11C, and one side 11 of the U-shape.
The notch 13 is formed in D, and the lower surface of the other side 11E is used as the abutting portion 16.

FIGS. 4 and 5 show another embodiment, in which the support fitting 11 'is made of a flat plate material, and its width is between the fins 2 connecting the water pipes 1,1. The nuts 14 are dimensioned to come into contact with the circumferential surfaces of the water pipes 1, 1 at positions slightly larger than the thickness of the nut 14, and both side edges thereof are welded to the water pipes 1, 1.

A U-shaped notch 13 similar to that of the above-mentioned embodiment is formed from one end edge of the support fitting 11 ', and a counterbore 17 is formed at the edge.

In this embodiment, one surface of the fin 2 serves as the abutting portion 16 on the side of the fixing member, and the tip of the screw shaft portion 12 abuts on the abutting portion 16.

Also in the case of this embodiment, regarding attachment of the anchor member 10, similarly to the above-mentioned embodiment, the nut 14 is previously screwed into the screw shaft portion 12 of the bolt 18 and the under-neck portion of the nut 14 is supported by the support fitting. Fitted in the notch 13 of 11 ',
Then, the anchor brick 4 or the nut 14 is rotated and tightened, so that the tip end of the screw shaft portion 12 immediately contacts the butting portion 16 of the fin 2, and further tightened to further tighten the nut 1.
The anchor member 10 is firmly attached to the support fitting 11 'by pressing the support member 11' into contact with the support member 11 '.

FIGS. 6 and 7 show still another embodiment, in which the anchor member 10 is attached to the iron shell 19 of the furnace. The support fitting 11 ″ in this embodiment is composed of an annular piece, and the anchor member 1 is provided in a part of this piece in the axial direction.
A slit-shaped notch 13 ′ having an opening width through which the screw shaft 12 of 0 can be inserted is formed, and the outer surface on the opposite side of the notch 13 ′ is welded to the iron shell 19. The inner peripheral surface facing the cutout portion 13 ′ serves as the abutting portion 16.

Since this support fitting 11 "can be formed by using a pipe material, a plurality of anchor members 10, 10 can be attached to one support fitting 11" as shown in FIG. In this case, in this case, the under-neck portion of the nut 14 that is screwed into the screw shaft portion 12 of the anchor member 10 is sequentially fitted from one end of the support fitting 11 ″ in the direction indicated by the white arrow and slid to a predetermined position. By rotating the anchor member 10 or the nut 14, the anchor member 10 is moved to that position.
Can be fixed. In the case of this support fitting 11 ″, since the inner surfaces on both sides of the opening of the cut portion 13 form a concave arc surface, the nut 1 can be formed without forming the spot facing portion 17.
It has a rotation stop function of 4.

FIGS. 8 and 9 show an embodiment of attachment to the iron shell 19 when the anchor member is a Y-shaped stud, and this anchor member 10 ′ has a Y-shape at the end of the screw shaft portion 12. The locking portion 20 of FIG.

The support fitting 11 has a longitudinal section in FIG. 10 (A), a plane in FIG. 10 (B), and a Y- line in FIG. 10 (A) in FIG. 10 (C).
As shown in the cross section taken along the arrow Y, it basically has the same structure as the support fitting 11 in FIGS. 1 and 2, and the portions corresponding to these are given the same reference numerals.

The anchoring portion 20 of the anchor member 10 'is embedded in the irregular refractory 7, and the irregular refractory 7 is used as a precast regular refractory 21 as shown in FIGS. Good. In this case, since the fixed refractory 21 cannot be rotated to fix the anchor member 10 ′ to the support fitting 11, the nut 14 is rotated to press the tip of the screw shaft portion 12 against the butting portion 16. It will be installed in such a way. 22 and 23 are heat insulating materials, and 24 is a filler.

FIG. 13 is a jig for mounting an anchor member which can be mechanically mounted instead of rotating the anchor brick 4 of the anchor member 10 in the embodiment shown in FIGS. 25 is a partial cross-sectional view of an embodiment of No. 25, which has a shallow recess 26 into which the end of the anchor brick 4 can be fitted, and an impact wrench and a rotary drill are provided in the center of the back surface of the recess 26. Is provided with a connecting portion 27 (socket) for connecting to a drive shaft of a rotary tool, such as a rubber plate, a polymer material, or other plate-shaped material having a large friction coefficient. Friction member 28
Is laid and fixed with an adhesive or the like.

Therefore, when the anchor member 10 is rotated and attached to the support fitting 11 in FIGS. 1 to 7, the recess 26 of the jig 25 is fitted to the end of the anchor brick 4 and the rotary tool is driven to move the anchor brick. The anchor brick 4 is rotated by the frictional engagement between the friction member 4 and the friction member 28, and the screw shaft portion 12 of the anchor brick 4 can be advanced to be pressed against the butting portion 16. During this time, the operation of directly supporting the anchor bricks 4 by hand is unnecessary.

[0034]

As described above, according to the present invention, the anchor member can be fixed by a slight screwing amount until the tip of the screw shaft portion of the anchor member hits the abutting portion. Even if it has a large weight, it can be attached easily and quickly, and the construction period can be greatly shortened.

Further, since the support member of the anchor member does not have a screw, even if rust or dust adheres to the anchor member, the anchor member can be securely attached without any trouble. Further, since the support fitting does not have a screw, the anchor member can be easily removed even if it receives a shock due to disassembly during repair, and it can be reused, which is extremely effective in terms of economy.

Further, even if thermal expansion of the refractory material occurs, the screw shaft of the anchor member can follow and move in the notch of the support fitting, so that the expansion amount can be absorbed and the thermal stress of the refractory material can be reduced. Can be relaxed.

On the other hand, if the anchor member mounting jig is used, not only the number of steps for manually rotating and mounting the anchor member can be saved, but also the anchor member can be mounted quickly and the working efficiency can be further improved.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a lining support structure according to the present invention.

FIG. 2 is a sectional view of the same seen from the side.

3 (A), (B) and (C) show the support fittings in FIGS. 1 and 2, (A) being a sectional view, (B) being a front view and (C) being a plan view. Yes, (D) is a cross-sectional view of a modified example.

FIG. 4 is a sectional view showing another embodiment of the lining support structure according to the present invention.

FIG. 5 is a sectional view of the same seen from the side.

FIG. 6 is a sectional view showing another embodiment of the lining support structure according to the present invention.

FIG. 7 is a sectional view of the same seen from the side.

FIG. 8 is a sectional view showing another embodiment of the lining support structure according to the present invention.

FIG. 9 is a sectional view of the same seen from the front.

10 (A), (B) and (C) show the support fittings in FIGS. 8 and 9, (A) being a sectional view, (B) being a plan view, and (C) being (A). 3 is a cross-sectional view taken along line YY of FIG.

FIG. 11 is a cross-sectional view when the refractory of FIG. 8 is a precast standard refractory.

FIG. 12 is a front view of the same.

FIG. 13 is a partially sectional front view showing an embodiment of an anchor member mounting jig according to the present invention.

FIG. 14 is a cross-sectional view showing a conventional lining support structure.

FIG. 15 is a sectional view of the same seen from the side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water pipe 2 Fin 3 High nut 4 Anchor brick 5,18 Bolt 7 Unshaped refractory material 10 Anchor member 11, 11 ', 11 "Support metal fitting 12 Screw shaft part 13, 13' Notch part 14 Nut 15 Plate 16 Butt part 17 Counterbore part 19 Iron skin 20 Engagement part 21 Standard refractory material (precast product) 25 Anchor member mounting jig 27 Connection part 28 Friction member

Claims (7)

[Claims] 1. A support fitting having a notch formed therein for loosely fitting a screw shaft portion of an anchor member serving as an anchor of an amorphous refractory, and the support fitting is provided at a predetermined distance to a fixing member of a furnace. A screw of the anchor member is fixedly arranged, and the under-neck portion of the nut screwed to the screw shaft portion of the anchor member is fitted into the notch of the support fitting and the anchor member or the nut is relatively rotated. An inner lining support structure for an industrial kiln, characterized in that the tip of the shaft portion is pressed against the abutting portion on the side of the fixing member and the reaction force fixes the anchor member to the support fitting through the nut. 2. A U-shaped notch is formed from an edge of one side of the piece whose side surface is L-shaped, and the supporting metal fitting extends on the other side of the piece parallel to the one side. 2. An inner lining support structure for an industrial kiln according to claim 1, wherein a plate is provided so as to project directly above the portion, and a lower edge of the plate serves as an abutting portion. 3. The support fitting according to claim 1, wherein a slit-shaped cut portion is formed in a part of an annular portion in the axial direction, and an inner surface facing the cut portion serves as an abutting portion. Lining support structure for industrial kilns. 4. The counterbore according to any one of claims 1 to 3, further comprising a spot facing portion which engages two corresponding surfaces of the nut with an edge portion of the cut portion and restrains the nut non-rotatably. Internal lining support structure for industrial kilns. 5. The lining support structure for an industrial kiln according to claim 1, wherein the anchor member has an anchor brick that is non-rotatably inserted into the screw shaft portion. 6. The lining support structure for an industrial kiln according to claim 1, wherein the anchor member has a Y-shaped engaging portion at an end of the screw shaft portion. 7. A rotary tool such as an impact wrench, a rotary drill, etc. is provided with a recess into which an end of an anchor brick, which is mounted by a rotary operation, can be fitted to a support fitting arranged on a fixing member of a furnace. A jig for attaching an inner lining anchor member of an industrial kiln, comprising a connecting portion for connecting to an inner kiln, and a friction member such as a rubber plate or a polymer material is fixed to the inner bottom surface of the recess.