JP2511893Y2 - Sealing device for firing cart - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing device for a firing truck used in a tunnel furnace.

[0002]

2. Description of the Related Art A firing truck used for a tunnel furnace has
A seal device is attached to prevent high temperature gas in the upper part of the trolley from flowing into the lower part of the trolley. As shown in FIG. 3, the conventional sealing device for a firing truck is provided with a sand seal 2 at the bottom of the firing truck 1, and a sealing material 4, such as a fiber blanket, which contacts the side surface of the firing truck 1 on the side wall of the furnace body 3. It is usual that 5 is provided in a protruding manner, and further a sealing material 6 made of an inorganic material type packing is provided on the front and rear surfaces of the baking carriage 1.

However, in the conventional sealing device for a firing truck as described above, since the heights of the side sealing materials 4 and 5 are different from the heights of the front and rear sealing materials 6, the inside of the furnace is indicated by an arrow in FIG. It was impossible to prevent the high temperature gas from entering under the bogie or leaking the air under the bogie to the car top side, which caused deterioration of fuel consumption and occurrence of cooling cracks. Further, since the sealing materials 4 and 5 such as fiber blankets shrink at high temperature, the sealing performance of the side surface deteriorates after a certain period of time, and the sealing materials 4 and 5 are sometimes stripped off by the firing carriage 1. It was sometimes lost. Moreover, even if such a problem occurs, repairs cannot be performed during the furnace operation, and the fire must be stopped or the furnace must be operated as it is until the next fire stop, resulting in problems such as quality deterioration and fuel consumption deterioration. was there.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art and prevents hot gas from entering under the bogie or leaking air under the bogie to the car top side, and a sealing material. The present invention has been completed to provide a sealing device for a baking carriage that can be easily repaired in the event of damage.

[0005]

[Means for Solving the Problems] The above-mentioned problem is to mount a replaceable cartridge-type side seal member on the lower side surface of the firing truck, and to seal the front and rear sides of the firing truck at the same height as the side seal material. This can be solved by the sealing device for the firing truck, which is characterized in that the material is attached. Further, the above-mentioned problem is that a recess having a horizontal surface at the bottom is provided in the upper part of the side surface of the baking trolley, and an upper surface sealing material is filled in the recess, and an overhang portion protruding inside the recess is formed on the side wall of the furnace body. This can be solved by the sealing device for the firing truck, which is characterized by the above.

[0006]

EXAMPLES The present invention will be described in more detail below with reference to examples. In FIG. 1, 1 is a firing carriage, and 3 is a furnace body of a tunnel furnace. In the present invention, the side sealing material 7 is attached to the lower side portion of the firing carriage 1. The side sealing material 7 is made of a fiber blanket or the like as in the conventional case, but as shown in the enlarged view of FIG. 2, the fiber blanket is housed inside the cartridge 8 and can be easily replaced. Has become. Again 9
Is a front and rear sealing material for sealing the firing carriages 1 to each other. In the present invention, the front and rear sealing material 9 is mounted at the same height as the side sealing material 7.

According to the invention of claim 1 having such a structure, since the side seal member 7 and the front and rear seal members 9 have the same height, high-temperature gas enters under the carriage or under the carriage. It is possible to eliminate the flow path shown in FIG. 4 in which the air leaks to the car top side, and it is possible to prevent deterioration of fuel consumption and occurrence of cold cracking. Further, since the side sealing material 7 is of a cartridge type and is attached to the firing carriage 1 side, unlike the conventional one, when the sealing performance deteriorates, it is possible to easily carry out repairs while continuing the operation of the furnace. You can
It is possible to prevent problems such as deterioration of quality and deterioration of fuel efficiency.

Next, the embodiment of the invention of claim 2 is also shown in FIG.
This will be described below. According to this invention, a recess 11 having a horizontal surface 10 at the bottom is provided in the upper portion of the side surface of the baking carriage 1, and the upper surface sealing material 12 is filled in the recess 11. The upper surface sealing material 12 is of the same fiber blanket type as the side surface sealing material 7. Further, an overhang portion 13 having a lower surface projecting inwardly of the recess 11 and having a horizontal surface is formed on the side wall of the furnace body 3.
The lower surface of the overhang portion 13 and the horizontal surface of the recess 11
The upper surface sealing material 12 is used to seal between the upper and lower surfaces.

According to the invention of claim 2 having such a structure, since the sealing is performed between the horizontal plane 10 on the side of the firing carriage 1 and the horizontal plane of the overhang portion 13 on the side of the furnace body 3, the firing carriage is Even if it vibrates left and right during traveling, the sealing performance is not impaired, and since the upper surface sealing material 12 is provided on the firing carriage 1 side, the sealing performance is reduced as in the case of the above-mentioned invention of claim 1. Sometimes there is an advantage that repairs can be easily performed while the furnace is being operated.

It is preferable to combine the invention of claim 1 and the invention of claim 2 as shown in FIG. In this case, the inside of the furnace and the undercarriage are sealed in three stages by the upper surface sealing material 12, the side surface sealing material 7, and the sand seal 2, and a perfect sealing property can be obtained.

[0011]

As described above, according to the sealing apparatus for the firing truck of the present invention, it is possible to completely prevent high temperature gas from entering the underside of the truck and the air under the truck from leaking to the car top side. In addition, when the sealing material is damaged, it can be easily repaired, and it is possible to easily solve the problems such as deterioration in quality and deterioration in fuel consumption, which were difficult to solve in the past. Therefore, the present invention has an extremely large practical value as a sealing device for a firing truck that solves the conventional problems.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a side sealing material.

FIG. 3 is a cross-sectional view of a sealing device for a conventional firing truck.

FIG. 4 is a perspective view of a conventional sealing device for a baking carriage.

[Explanation of symbols]

 1 Baking Cart 7 Side Sealing Material 9 Front and Back Sealing Material 10 Horizontal Surface 11 Recess 12 Top Sealing Material 13 Overhang

Claims (3)

(57) [Scope of utility model registration request] 1. A replaceable cartridge-type side seal material is attached to the lower side surface of the firing truck, and front and rear seal materials are attached to the front and rear surfaces of the firing truck at the same height as the side seal material. Sealing device for firing truck. 2. The firing truck is provided with a recess having a horizontal surface at the bottom and a top surface sealant is filled in the recess, and an overhang portion projecting inside the recess is formed on the side wall of the furnace body. A sealing device for a baking trolley, which is characterized in that 3. The sealing apparatus for a firing truck according to claim 1, wherein a recess having a horizontal surface at the bottom is provided in the upper portion of the side surface of the firing truck, and a top sealing material is filled in the recess.