JPS6036874Y2 - Water jacket for heating equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a water jacket for a heating device that cools articles such as metal parts and powdered metals that come out of a heating furnace.

Conventionally, in a heating device having a metal heating furnace or the like, when an article is cooled and taken out without contact with a refrigerant such as water after heating,
A water jacket is provided as a cooling device on the exit side of the heating furnace, and the article is placed inside the water jacket on a conveyor such as a steel belt or a mesh belt, or a conveyor device consisting of a skid rail and a tray, and is conveyed.
Cooling during transportation is a common method.

For example, as shown in FIGS. 1 and 2, a water jacket 6 is installed on the outlet side of the heating furnace 1, in which a structure 4 having a double structure of an inner cylinder 2 and an outer cylinder 3 with a rectangular cross section is supported by pillars 5. In the case of a heating device in which a steel belt 8 is provided and driven by a belt drive 7 to convey the article through the heating furnace 1 and the water jacket 6, the water jacket 6 generally has a flange in a plane perpendicular to the direction of travel. 9 is established,
The flange-connected article placed on the steel belt 8 comes out of the heating furnace 1, passes through the inner cylinder 2 of the water jacket 6, and is supplied to the space between the inner cylinder 2 and the outer cylinder 3 from the water supply port 10. By flowing water discharged from the drain port 11, the air inside the inner cylinder, which is being cooled, absorbs heat and is cooled.

Therefore, due to the high temperature of the pre-process of the water jacket 6 and the welded structure of the water jacket 6, the heat from the exhaust of the heating furnace 1 and the articles conveyed from the heating furnace and the belt 8 is As a result, the bottom surface of the inner cylinder 2 of the water jacket 6 is deformed into an upwardly convex shape due to thermal strain.

For this reason, air is not completely removed from the convex parts even when water passes through them, and evaporated water vapor accumulates in air pockets, causing abnormal temperature rises without being cooled by water, resulting in thermal fatigue and stress corrosion cracking due to repeated temperature rises and falls. The resulting cracks cause water leakage and product quality defects.

Furthermore, during repair and replacement after an accident, it is necessary to cut or connect the steel belt 8 because the flange 9 of the water jacket 6 is provided only in a direction perpendicular to the axial direction.

If the skid rail type is used instead of the belt type, the skit rail will need to be removed and installed.

Therefore, there are disadvantages in that the amount of work increases, many man-hours are required, and long-term equipment shutdown cannot be avoided.

The present invention is intended to improve the above-mentioned drawbacks regarding the water jacket of a heating device.It has a structure that does not create air pockets in the water jacket, and allows work to be carried out without removing conveyance devices such as belts and skid rails when disassembling and assembling the water jacket. In order to make this possible, a double structure consisting of an inner cylinder and an outer cylinder is created by combining cylinder parts that are separable in the longitudinal direction and orthogonal direction and have flanges at each separated end. This invention provides a water jacket for a heating device, characterized in that the center part of the bottom surface of the cylinder is formed in a downwardly convex shape, and reinforcing ribs are provided at appropriate recesses on the outer wall surface of the inner cylinder.

Hereinafter, one embodiment of the present invention will be explained with reference to the drawings.

As shown in FIG. 3, the shape of the inner cylinder 2 is such that the bottom surface is shaped like a ship's bottom and is convex downward, and a wall reinforcing rib 12 is provided on the outside of the bottom surface.

This increases the heat transfer area on the bottom side of the inner cylinder 2, improves cooling ability, and prevents deformation of the inner cylinder 4, prevents accidents such as thermal fatigue and stress corrosion cracking due to the formation of air pockets, and extends the life of the inner cylinder. You can do this by measuring.

As shown in FIGS. 3 to 5, the water jacket 6 constituting the double structure consisting of the inner cylinder 2 and the outer cylinder 3 is arranged in a double structure in both the axial direction and the direction perpendicular to the axis. is divided, and each divided end has an assembly flange 13.13.
' is provided.

In this way, the water jacket can be divided vertically and structurally, and assembly can be easily done by tightening each part with bolts and nuts, and there is no need to cut, disassemble, or assemble the belt that passes through it. I made it so that I could get away with it.

As mentioned above, the bottom surface of the inner cylinder of the double structure consisting of an inner cylinder and an outer cylinder is convex downward to prevent air pockets from forming.
Furthermore, the reinforcing ribs increase the strength of the inner cylinder wall surface and improve the cooling efficiency.Furthermore, the double structure is flange-jointed and can be disassembled in the axial direction and the direction perpendicular to it, so that the conveyor part such as a belt passing through it can be easily removed. This eliminates the need for disassembly and removal, reducing the man-hours required for repair and maintenance.

Therefore, it is possible to extend the life of the water jacket and greatly reduce equipment downtime for maintenance, etc., thereby reducing costs and improving productivity.

[Brief explanation of drawings]

Figure 1 is a side view of the water jacket of a conventional heating device, Figure 2 is a front view of the water jacket in Figure 1,
3 is a front view showing the double structure of the water jacket of the present invention, FIG. 4 is a plan view of the water jacket of FIG. 3, and FIG. 5 is a side view of the water jacket of FIG. 3. 2...Inner cylinder, 3...Outer cylinder, 10...
...Water inlet, 11...Drain port, 12...
...Reinforcement rib, 13,13'...Flange.

Claims (1)

[Scope of utility model registration request] The inner cylinder and the outer cylinder are assembled by combining cylinder parts that can be separated in the longitudinal direction and the orthogonal direction and have flanges at each separated end to form a double structure of the inner cylinder and the outer cylinder. A heating device characterized in that the inner cylinder has a double structure with a cylinder, the center of the lower surface of the bottom of the inner cylinder is formed in a downwardly convex shape, and reinforcing ribs are provided at appropriate locations on the outer wall surface of the inner cylinder. Equipment water jacket.