JPS6314314Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a device for fixing a lining material lining the casing of a heating furnace, a freezer, etc.

[Conventional technology]

Blanket and felt insulation materials such as rock wool, slag wool, silica fiber, and alumina fiber have excellent fire resistance, heat insulation, and heat retention properties, so they are often used as lining materials for heating furnaces and freezers. ing.

As a conventional technique of such a lining material fixing device, there is one shown in FIGS. 5 to 7.

In FIG. 5, a heat insulating material 23 is inserted into a stud bolt 22 provided on the inner surface of a casing 21, and a washer 24 is fitted onto the stud bolt 22 and tightened with a nut 25.

FIG. 6 shows the furnace wall of the heating furnace, and a back-up material 26 is inserted into the stud bolt 22 provided on the inner surface of the casing 21 to remove the stud bolt 2.
A medium temperature blanket 28 and a high temperature blanket 29 are stuck into the stud bolt 22 and laminated on the backup material 26, and a flange 30 is provided at the tip of the stud bolt 22. A ceramic cup 31 is fitted, a nut 32 is engaged with a stud bolt 22 from the inside of the cup 31 and tightened, and the inside of the ceramic cup 31 is filled with a ceramic fiber bulk 33.

Furthermore, FIG. 7 shows that a nut body 34 made of a refractory material such as ceramics is attached to the end of the stud bolt 22.
The back-up material 2 is threadedly engaged with the fire-resistant washer 35 which is supported by the nut body 34 to prevent it from coming off.
6. The medium temperature blanket 28 and the high temperature blanket 29 are each pressed down.

[Problem that the invention attempts to solve]

By the way, all of the above-mentioned conventional fixing devices have a structure in which the elastic heat insulating material 23, the backup material 26, and the lining materials of the blankets 28 and 29 are pressed against the inner surface of the casing 21 by tightening screws and fixed. Expansion of the lining material can be suppressed using a fastener such as a nut, but contraction cannot be suppressed. For this reason, when repeated compressive force is applied to the lining material due to pressure fluctuations and vibrations in the room, the lining material repeatedly contracts and then expands as it restores its shape, causing loosening of fasteners such as nuts. Easy to occur. In addition, when the lining material expands, indoor air enters the inside of the lining material, and when it contracts, the intruded air is pushed out, which increases air circulation and reduces the heat insulation effect and heat retention effect.

Therefore, the technical objective of this invention is to eliminate the above-mentioned disadvantages and improve the heat insulation effect and heat retention effect.

[Means for solving problems]

In order to solve the above problems, this invention has two opposite clips that form a bolt insertion hole with a plurality of inclined elastic engagement pieces on the outside of the stud bolt between the laminated parts of the plurality of lining materials. The structure is such that they are overlapped and fitted in the same direction.

[Effect]

As mentioned above, by arranging the two speed clips that fit on the outside of the stud bolt between the laminated parts of the lining material, the speed clips suppress the shrinkage of the lining material located on the surface side of the clips. be able to. For this reason, even if compressive force is applied to the lining material due to pressure fluctuations or vibrations in the room, the lining material hardly contracts, and there is also almost no expansion due to shape recovery after contraction, so the nut It is effective in preventing loosening of fasteners such as, etc., and also prevents air from circulating inside the lining material.

〔Example〕

Embodiments of this invention will be described below with reference to FIGS. 1 to 4.

As shown in Figs. 1 and 2, a stud bolt 2 is provided on the inner surface of the casing 1, and two heat insulating materials 3, 3' such as felt-like heat insulating material are inserted into the stud bolt 2 and laminated. A pair of speed clips 4 are fitted on the outside of the stud bolt 2 between the laminated portions of the heat insulators 3 and 3' and on the surface side of the heat insulator 3'.

Here, as shown in FIG. 1, the speed clip 4 is equipped with a plurality of inclined elastic engagement pieces 5 in the center, and has a diameter smaller than the outer diameter of the stud bolt 2 between the inner edges of the elastic engagement pieces 5. A bolt insertion hole 6 is provided. This speed clip 4 is fitted to the outside of the stud bolt 2 with the engaging pieces 5 facing outward and stacked in opposite directions, and by this fitting,
The engaging piece 5 of each speed clip 4 is connected to the bolt 2 mentioned above.
The two speed clips 4 are engaged with the threaded portion 2' of the stud bolt 2, and since the direction of engagement of the engaging pieces 5 in the two speed clips 4 is opposite, the two speed clips 4 are immovable in the axial direction with respect to the stud bolt 2. The speed clip 4 allows the two heat insulators 3 and 3' to be stably attached.

In addition, by arranging two speed clips 4 between the laminated parts of the heat insulating materials 3 and 3', the back side of the heat insulating material 3' on the front side can be supported by the clips 4, so that the heat insulating material on the front side 3' can be prevented from contracting.

3 and 4 show the furnace wall structure of a heating furnace, and FIG. 3 shows a back-up material 7, a medium-temperature blanket 8, and a high-temperature blanket 9 inserted into the stud bolts 2 provided on the inner surface of the casing 1. A ceramic cup 10 with a flange having a screw hole is screwed into the tip of the stud bolt 2 from the surface of the high-temperature blanket 9, and the flange 11 of the cup 10 presses the surface of the high-temperature blanket 9. is filled with fireproof material 12. In addition, two speed clips 4 are fitted on the outside of the stud bolt 2 between the back-up material 7 and the medium-temperature blanket 8, and the speed clips 4 support the back of the medium-temperature blanket 8 on the front side. This prevents the blanket 8 from shrinking.

Figure 4 shows the ceramic scoop 1 shown in Figure 3.
A refractory nut body 14 having a flange 13 in place of the bolt 2 is threadedly engaged with the stud bolt 2, and the flange 13 of the nut body 14 connects the high temperature blanket 9.
The surface is pressed down.

In the case of the embodiment, two speed clips 4,
The ceramic cup 10 and the nut body 14 are used as fasteners, and the fasteners are attached to the ends of the stud bolts 2 to press down the surface of the lining material such as the laminated heat insulating material or blanket. It is not limited to the above-mentioned ones, and other arbitrary ones can be used.

Moreover, the number of laminated sheets of lining material is also arbitrary.

〔effect〕

As described above, according to this invention, two clips stacked in opposite directions are fitted on the outside of the stud bolt, and the clip is placed between the laminated parts of the laminated lining material, so that the clip is placed on the surface side of the clip. Since the back side of the lining material is supported by the clips, shrinkage of the front lining material can be supported by the two clips.

Therefore, even if compressive force is applied to the lining material due to pressure fluctuations or vibrations in the room, the lining material will not shrink, making it effective in preventing loosening of fasteners such as nuts. Since there is almost no air circulation inside the lining material, it is possible to improve the heat insulation effect and the heat retention effect.

In addition, the two clips are extremely easy to install because they are fitted on the outside of the stud bolt and moved in the axial direction so that the engaging piece of each clip engages with the screw of the stud bolt. Therefore, the lining material can be installed extremely efficiently.

Furthermore, since the engaging pieces of the two clips engage in opposite directions, the lining material can be attached extremely stably.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing the stud bolt and speed clip of the device according to this invention, and FIG.
4 to 4 are cross-sectional views showing embodiments of the above device,
FIGS. 5 to 7 are cross-sectional views showing conventional fixing devices. 1... Casing, 2... Stud bolt,
3, 3'... Heat insulating material, 4... Clip, 5... Engaging piece, 7... Backup material, 8... Blanket for medium temperature, 9... Blanket for high temperature.

Claims (1)

[Scope of utility model registration request] In a lining material fixing device, a plurality of lining materials are stacked by piercing stud bolts provided on the inner surface of a casing, and each of the lining materials is pressed against the inner surface of the casing by a fastener attached to the end of the stud bolt, A lining characterized in that two clips that form a bolt insertion hole by a plurality of inclined elastic engagement pieces are overlapped and fitted in opposite directions to the outside of the stud bolt between the laminated parts of the lining material. Material fixing device.