JPH04281184A - Vertical type heat treatment furnace - Google Patents

Abstract

PURPOSE:To provide a vertical type heat treatment furnace, capable of effecting heat treatment of a work to be heat-treated surely within a predetermined period of time and coping with the change of the work into any different work with a simple structure. CONSTITUTION:A furnace body 11 is supported swingablly and a plurality of partitioning plates 18, orthgonal to the swinging surface of said furnace body 11, are provided in a heating chamber 17 at multiple stages while neighboring partitioning plates 18 are arranged with reverse slopes. An opening 19 is provided at a part positioned at the upper side of the heating chamber 17 of respective partitioning plates 18 while a work to be heat-treated 21 is treated by heat while moving it from the upper part of the heating chamber 17 to the lower part of the same.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical heat treatment furnace, and more particularly to a vertical heat treatment furnace used for calcination of ceramic raw materials and firing of ceramic molded bodies.

0002

2. Description of the Related Art Generally, in a vertical heat treatment furnace, as shown in FIG.
After being filled and heat-treated while moving inside the heating chamber 3, it is continuously taken out by a discharge device provided in the lower opening 5. This type of vertical heat treatment furnace has the advantage of saving energy and space compared to continuous tunnel furnaces, rotary kilns, etc.; There was a problem.

In order to solve this problem, as shown in FIG. 6, it has been proposed that a plurality of partition plates 6 are provided in the heating chamber 3 so that they can move forward and backward, and the heating chamber 3 can be separated or communicated with each partition plate 6. has been done. In this device, as shown in FIG. 6, partition plates 6a and 6b are projected to form a space 7, and different types of objects to be heat treated 4a are divided upwardly. Then, the partition plate 6c located one step below the partition plate 6b is made to protrude when the object to be heat treated 4b has completely passed through. Thereafter, the partition plate 6a is retracted into the furnace wall, and the different types of heat-treated materials 4b are lowered to the partition plate 6b. In this way, by repeatedly advancing and retreating between the partition plates 6 located sequentially below, the object to be heat treated 4b is moved downward so as not to mix with the object to be heat treated 4a of a different type.

0004

[Problems to be Solved by the Invention] However, in the above-mentioned vertical heat treatment furnace, the object to be heat treated gradually moves downward from the part that opens when the partition plate 6 is retracted. The moving speed of No. 4, that is, the heat treatment time was different, which sometimes caused a difference in quality.

[0005] Furthermore, since the heat-treated object 4 is filled in the heating chamber 3, there is a problem that it gets clogged midway and does not move downward, or if gas is generated from the heat-treated object 4 during the heat treatment, there is a problem. Since the partition plate 6 protrudes, there is a problem that the liquid cannot be discharged.

Furthermore, the drive mechanism for operating the partition plate 6 is complicated.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a vertical heat treatment furnace that can reliably heat treat objects in a predetermined period of time, and has a simple structure that can accommodate changes to different types of materials. .

[0007]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a vertical heat treatment furnace in which a material to be heat treated is moved from above to below a heating chamber of the furnace body for heat treatment, and the furnace body is shaken. On the other hand, a plurality of partition plates perpendicular to the swinging plane of the furnace body are provided in the heating chamber in multiple stages, and adjacent partition plates have opposite slopes, and the upper side of the heating chamber of each partition plate is An opening is provided in the part located at .

[0008]

[Operation] Therefore, the material to be heat treated that is introduced from above the furnace body is held by the partition plate located at the top, and as the furnace body swings, it is moved sequentially through the opening onto the lower partition plate while being heat treated. be done.

[0009]

Embodiment Next, an embodiment of a vertical heat treatment furnace according to the present invention will be described with reference to FIGS. 1 to 4. This vertical heat treatment furnace is rotatably supported by a pedestal 12 approximately in the middle of a furnace body 11, and is oscillated by a rotary drive device 3 using an electric motor as a drive source. This swing angle is larger than the slope of the partition plate 18, which will be described later, and is about 20 degrees with respect to the vertical direction in this embodiment.

The furnace body 11 has a rectangular parallelepiped shape, and a heating chamber 17 is maintained at a predetermined temperature by a plurality of heaters 16 provided on the furnace wall 15.

A partition plate 18 is provided in the heating chamber 17, which is perpendicular to the swing plane of the furnace body 11, that is, the plane drawn when the center line of the furnace body 11 rotates, and which is arranged in the heating chamber 17.
They are arranged in multiple stages in the longitudinal direction and at an angle (15 degrees in this embodiment) with respect to a plane perpendicular to the longitudinal direction. Adjacent partition plates 18 have opposite slopes, and an opening 1 is provided in a portion located above the heating chamber 17.
9 is formed.

Next, the operation of the vertical heat treatment furnace will be explained. First, as shown in FIG. 2, with the furnace body 11 facing vertically, a predetermined amount of the heat-treated material 21 is introduced through the upper opening 20 so as not to spill from the partition plate 18 located at the top. Then, as shown in FIG. 3, the rotary drive device 13 is driven to rotate the furnace body 11 in the direction of arrow A,
Tilt approximately 20 degrees with respect to the vertical direction. The object to be heat treated 21 moves through the opening 19 onto the second partition plate 18 from above. Subsequently, the furnace body 11 is rotated in the opposite direction and tilted at 20 degrees in the direction of arrow B with respect to the vertical direction. As a result, the heat-treated object 21 that had been moved to the second partition plate 18 from above is transferred to the third partition plate 1 from above.
8 Move up. Then, the furnace body 11 is returned to its original vertical position and stopped for a predetermined period of time, completing one cycle. Note that, as described above, the material to be heat treated 21 is charged every time one cycle is completed, that is, when the furnace body 11 is oriented in the vertical direction.

In this way, by alternately swinging the furnace body 11 in the directions of arrows A and B, the objects to be heat treated 21 are sequentially moved onto the partition plate 18 located below. and,
When the furnace body 11 is rocked a predetermined number of times (the same number of times as the number of partition plates 18), the heat-treated material 21 introduced from the upper opening 20 is discharged from the lower opening 22. In this embodiment, an electric motor is used as the drive source for the rotary drive device 13, but a hydraulic cylinder may be used instead.

[0014]

[Effects of the Invention] As is clear from the above description, in the vertical heat treatment furnace according to the present invention, a plurality of partition plates are provided in the furnace body, and the furnace body is alternately swung at a predetermined angle to separate the objects to be heat treated. I moved them sequentially to the lower partition plates, so
The furnace body is not clogged as in the conventional case, and the gas generated from the object to be heat-treated can be discharged to the outside of the furnace through the space left in the heating chamber.

[0015] Since the heat-treated materials held on each partition plate move almost independently, they can be discharged in a fixed amount at a time without installing a discharge device in the lower opening, and it is also possible to switch to a different material midway through the process. However, the materials to be heat treated are difficult to mix.

Furthermore, since the movement of the material to be heat-treated within the furnace body is reliably carried out by the rocking of the furnace body, heat treatment can be performed appropriately in a predetermined time as long as the rocking time is controlled, and there is no variation in quality. It disappears.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a vertical heat treatment furnace.

FIG. 2 is a sectional view of the furnace body shown in FIG. 1.

FIG. 3 is a sectional view of the furnace body shown in FIG. 1 in a tilted state.

FIG. 4 is a sectional view of the furnace body shown in FIG. 1 in a tilted state.

FIG. 5 is a sectional view of a conventional vertical heat treatment furnace.

FIG. 6 is a sectional view of a conventional vertical heat treatment furnace.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11... Furnace body, 17... Heating chamber, 18... Partition plate, 19... Opening part, 21... Heat-processed object.

Claims (1)

[Claims] 1. A vertical heat treatment furnace in which a material to be heat treated is moved from above to below in a heating chamber of a furnace body for heat treatment, wherein the furnace body is swingably supported, and a A plurality of partition plates perpendicular to the swing plane are provided in multiple stages, adjacent partition plates have opposite slopes, and an opening is provided in a portion of each partition plate located above the heating chamber. Vertical heat treatment furnace.