JP7041301B1 - Continuous firing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the quality of a product to be fired and a product to be fired. A continuous firing system 1 A continuous firing furnace 1 includes a continuous firing furnace 10 and a circulation line 20 for circulating a firing container A with the continuous firing furnace 10. I have. The continuous firing furnace 10 has a tunnel-type furnace body 13 that forms a transport space 13a in which the firing container A from the carry-in inlet 11 to the carry-out port 12 is conveyed. The circulation line 20 has a hood 21 outside the continuous firing furnace 10 that separates the circulation space 21a from the carry-out port 12 of the continuous firing furnace 10 to the carry-in inlet 11 from the external space. [Selection diagram] Fig. 1

Description

The present disclosure relates to a continuous firing system.

Japanese Unexamined Patent Publication No. 2019-184211 discloses an invention relating to a firing apparatus. The firing apparatus disclosed here includes a supply unit, a firing furnace, a transport unit, and a discharge unit. The supply unit is a portion that supplies the calcined object to the setter on which the calcined object to be calcined is placed. The firing furnace is a furnace for firing the object to be fired supplied to the setter. The transport unit is a portion where the setter to which the object to be fired is supplied from the supply unit is carried into the firing furnace, and the setter on which the object to be fired is fired is carried out from the firing furnace. The discharge part is a part for removing the high-temperature fired product carried out from the firing furnace from the setter. In the same publication, the transport unit moves the setter in the order of the supply unit, the firing furnace, and the discharge unit. The supply unit is provided with a heating mechanism for heating the object to be fired, and supplies the heated object to be fired to the setter. According to such a firing apparatus, since the preheated object to be fired is supplied to the high temperature setter and supplied to the firing furnace, the time required for raising the temperature of the object to be fired or the setter can be shortened. Moreover, since the fired product is removed from the setter at a high temperature, the time required to remove the fired product from the setter after firing can be shortened. Therefore, it is said that the production efficiency of the fired product can be increased.

Japanese Unexamined Patent Publication No. 2019-184211

By the way, the present inventor wants to improve the quality of the product to be fired and the product to be fired.

One aspect of the continuous firing system disclosed herein includes a continuous firing furnace and a circulation line that circulates the firing vessel with respect to the continuous firing furnace. The continuous firing furnace has a tunnel-type furnace body that forms a transport space for transporting the firing container from the carry-in port to the carry-out port. The circulation line has a hood on the outside of the continuous firing furnace, which separates the circulation space from the carry-out port to the carry-in port of the continuous firing furnace from the external space.

According to such a continuous firing system, the circulation space in which the firing container circulates can be adjusted to an appropriate atmosphere. Therefore, the quality of the product to be fired and the product to be fired can be maintained high.

The circulation line may be provided with a first replacement chamber at one end on the carry-in port side of the furnace body. Further, the circulation line may be provided with a second replacement chamber at one end on the carry-out port side of the furnace body. The circulation line may include at least one replacement chamber.

Further, the circulation line may include a take-out unit for taking out the fired product from the fired container and a supply unit for supplying the unfired product to be fired to the fired container. The take-out unit and the supply unit are each connected to a circulation space surrounded by a hood, but may have a processing space separated from an external space. The supply unit may be provided on the carry-in inlet side of the continuous firing furnace with respect to the take-out unit in the circulation path.

The circulation line may be provided with a third replacement chamber on the upstream side of the extraction unit. Further, the circulation line may be provided with a fourth replacement chamber between the take-out unit and the supply unit. The circulation line may be provided with a fifth replacement chamber on the downstream side of the supply unit.

Further, the circulation line may include at least one external branch line that is at least partially branched from the circulation line and extends out of the circulation space. The external branch line may be provided with a replacement chamber at the end where it joins the circulation line.

The transfer path of the continuous firing furnace may be set along a straight line. The circulation line may have a linear transport section, a first connection section, and a second connection section. The linear transfer section is a transfer portion along a straight line parallel to the transfer path of the continuous firing furnace. The first connection portion is a portion that is continuous with the carry-out port side of the continuous firing furnace and connects the transport path of the continuous firing furnace and the linear transport portion. The second connection portion is a portion that is continuous with the carry-in inlet side of the continuous firing furnace and connects the transport path of the continuous firing furnace and the linear transport portion. Further, the take-out unit may be arranged in the linear transport unit. Further, the supply unit may be arranged in the linear transport unit.

In addition, the take-out unit has an inversion mechanism that inverts the firing container upside down, a collection unit that collects the contents of the firing container below the position where the firing container is inverted, and a space where the firing container is inverted and the outside. May include at least one ejecting device with a first cover for blocking. In this case, the space surrounded by the first cover may be continuous with the space surrounded by the hood of the circulation line. The take-out device may further include a cleaning mechanism for cleaning the firing container. The take-out unit may include a first take-out device without a cleaning mechanism and a second take-out device with a cleaning mechanism. Further, the take-out device may include a shutter that separates the space surrounded by the first cover and the space surrounded by the hood of the circulation line.

The supply unit includes a hopper for supplying the object to be fired, a feeder for supplying the object to be fired from the hopper to the firing container, and a second cover for blocking the space where the object to be fired is supplied to the firing container and the external space. You may be prepared. In this case, the space surrounded by the second cover may be continuous with the space surrounded by the hood of the circulation line.

The take-out unit may include a first lid removing mechanism for removing the lid from the firing container. The supply unit may be provided with a second lid removing mechanism for removing the lid from the firing container. The lid removing mechanism may include a third cover that shields the space from which the lid is removed from the firing container from the external space. In this case, the space surrounded by the third cover may be continuous with the space surrounded by the hood of the circulation line.

FIG. 1 is a plan view schematically showing the continuous firing system 1. FIG. 2 is a side view schematically showing the linear transport portion 41 of the circulation line 20. FIG. 3 is a side view schematically showing the reversing mechanism 51. FIG. 4 is a front view schematically showing the reversing mechanism 51. FIG. 5 is a side view schematically showing the reversing mechanism 51. FIG. 6 is a front view schematically showing the reversing mechanism 51. FIG. 7 is a side view showing the circulation line 20A in another embodiment.

Hereinafter, one of the typical embodiments in the present disclosure will be described in detail with reference to the drawings. In the following drawings, members / parts having the same function are described with the same reference numerals. Further, the dimensional relations (length, width, thickness, etc.) in each drawing do not reflect the actual dimensional relations. The up, down, left, right, front, and back directions are represented by the arrows U, D, L, R, F, and Rr in the figure, respectively. Here, the directions of up, down, left, right, front, and back are only defined for convenience of explanation, and do not limit the present invention unless otherwise specified.

FIG. 1 is a plan view schematically showing the continuous firing system 1. As shown in FIG. 1, the continuous firing system 1 includes a continuous firing furnace 10 and a circulation line 20.

<Continuous firing furnace 10>
The continuous firing furnace 10 has a tunnel type furnace body 13. The tunnel type furnace body 13 has a carry-in inlet 11 at one end and a carry-out port 12 at the other end. In FIG. 1, the carry-out port 12 side of the continuous firing furnace 10 is the front, the carry-in inlet 11 side is the rear, and the left and right sides are defined from the carry-in port 11 of the continuous firing furnace 10 toward the carry-out port 12. The tunnel-type furnace body 13 is formed with a transport space 13a in which the firing vessel A from the carry-in inlet 11 to the carry-out port 12 is conveyed. The furnace body 13 is surrounded by a furnace wall made of a heat insulating material over the entire circumference of the transport space 13a in the transport direction. For example, the furnace wall may be overlaid with ceramic fiber boards formed into a predetermined shape. The ceramic fiber board is, for example, a plate material formed into a plate shape by adding an inorganic filler and an inorganic / organic binder to so-called bulk fiber. The thickness of the furnace wall is set to a required thickness such that the heat of the transport space 13a is sufficiently insulated.

In this embodiment, although not shown, transport rollers for transporting the firing container A are arranged inside the furnace body 13 in the transport space 13a from the carry-in inlet 11 to the carry-out port 12. In this embodiment, the transport path of the continuous firing furnace 10 is set along a straight line. The transfer roller is a cylindrical shaft-shaped roller, and penetrates the furnace body 13 along a direction orthogonal to the transfer space 13a. A ceramic roller is used as the transport roller. The transfer rollers have the same height so as to support the firing container A, and are arranged in the transfer space 13a at a predetermined pitch. The drive device for rotating the transfer roller is provided outside the furnace body 13. Further, a plurality of heaters, gas introduction pipes, exhaust pipes, and the like are arranged inside the furnace body 13. The heater is a device that heats the object to be processed in the transport space 13a. Further, the transport space 13a of the furnace body 13 may be provided with a partition that divides the transport space 13a into zones having an appropriate length. Then, it is preferable that the temperature, the atmosphere gas, and the like can be controlled for each zone. Further, all the members arranged inside the furnace body 13 may be made of ceramic.

Here, a plurality of ceramic rollers (transport rollers) are arranged in the furnace body 13 along the transfer path at a predetermined pitch with the same height. Each ceramic roller is rotationally driven to transport the firing container A along the transport path. As described above, the continuous firing furnace in which the product is transferred by the ceramic roller is called a roller hearth kiln (RHK). The structure of the continuous firing furnace 10 is not limited to the structure exemplified here unless otherwise specified. Various structures can be adopted for the continuous firing furnace 10. The continuous firing furnace 10 may be a so-called pusher furnace. In the pusher furnace, there is no driving transport roller for transporting the firing vessel A unlike the roller harsher kiln (RHK), and the product placed on the table is transported while sliding on the ceramic rail. The pedestal is conveyed by being sequentially pushed by a pusher.

Although not shown here, in this embodiment, the furnace body 13 of the continuous firing furnace 10 is arranged on a base set at a predetermined height. The base may have a space beneath the space in which the furnace body 13 is located. In the space under the furnace body 13 composed of the base, a pipe for supplying air for adjusting the atmospheric gas in the continuous firing furnace 10 is provided, and a drive device such as a motor for driving the transfer roller is provided. It may be done.

<< Circulation line 20 >>
The circulation line 20 is a transfer line for circulating the firing container A with respect to the continuous firing furnace 10. The circulation line 20 is provided with a transport device 26 for transporting the firing container A, such as a transport roller and a drive device. In this embodiment, the circulation line 20 has a circulation space 22 outside the continuous firing furnace 10 from the carry-out port 12 of the continuous firing furnace 10 to the carry-in port 11. A transport device for transporting the firing container A is incorporated in the circulation space 22. The circulation space 22 is connected to the transfer space 13a of the continuous firing furnace 10, and forms an annular transfer path in which the firing container A circulates together with the transfer space 13a of the continuous firing furnace 10. The circulation space 22 is separated from the external space by the hood 21 as a whole.

<Food 21>
The hood 21 may be any as long as it covers the circumference of the circulation space 22 and is separated from the external space. For example, the hood 21 may cover a transport device arranged inside the circulation space 22, such as a transport roller, in a tunnel shape. Further, for example, when the floor of the space where the circulation space 22 is provided is ensured to be airtight, the hood 21 is combined with the floor of the space where the circulation space 22 is provided, and the circulation space 22 is externally provided. It may be separated from the space. In this case, the floor of the space may be a coated floor coated with an antistatic floor material or the like to ensure airtightness.

The hood 21 is preferably airtight enough to block the outside air. As a result, the atmosphere of the circulation space 22 covered with the hood 21 can be maintained in a predetermined atmosphere. From this point of view, the hood 21 may be made of chemically stable polycarbonate, polyethylene terephthalate, a glass panel member, or the like, as well as having airtightness. Further, the panel member may use an appropriate metal as a base material so as to ensure more reliable airtightness (gas permeability). Further, it is preferable that a sealing material is appropriately interposed at the member constituting the hood 21 and the joint between the hood 21 and other devices. For such a hood 21, for example, a panel material constituting an environmental test chamber capable of adjusting the test chamber to a predetermined atmosphere is appropriately used.

In this embodiment, in the circulation line 20, the circulation space 22 from the carry-out port 12 to the carry-in port 11 of the continuous firing furnace 10 is separated from the external space by the hood 21 on the outside of the continuous firing furnace 10. That is, by providing the hood 21 on the circulation line 20, the circulation space 22 in which the firing container A circulates is blocked from the external space. Further, by providing the hood 21, the atmosphere of the circulation space 22 can be adjusted. For example, even if the object to be fired before firing or the fired product is a material that reacts with oxygen or water vapor in the air, the atmosphere of the circulation space 22 is adjusted so that the air is in the air. Can suppress the reaction with oxygen and water vapor. Therefore, it can be supplied to the continuous firing furnace 10 while maintaining the quality of the product to be fired before being fired, and is taken out while maintaining the quality of the fired product fired by the continuous firing furnace 10. be able to. Therefore, a more stable product is created.

The circulation line 20 may include at least one replacement chamber 31-35. Here, the replacement rooms 31 to 35 refer to rooms that can partition the room from other spaces. The replacement chambers 31 to 35 may be spaces in which the atmosphere in the room can be adjusted. The replacement chambers 31 to 35 are provided on the transport path of the circulation line 20, respectively, and shutters that partition the space before and after the transport path (that is, the continuous firing furnace 10 side and the opposite side of the first replacement chamber 31). 31a to 35a and 31b to 35b (see FIGS. 1 and 2) are provided. The replacement chambers 31 to 35 function as partitions that appropriately partition the circulation line 20. In this embodiment, since the circulation line 20 is covered with the hood 21 as a whole, the atmosphere in the circulation line 20 can be controlled. The circulation line 20 can be partially partitioned by providing at least one replacement chamber 31 to 35 in the circulation line 20. Therefore, the atmosphere of the circulation line 20 can be partially adjusted. Further, for example, when a trouble such as breakage of the firing container A occurs in any area of the circulation line 20, the circulation lines 20 are provided by the shutters 31a to 35a and 31b to 35b provided in the replacement chambers 31 to 35. It is possible to partition the area where the trouble occurred. This makes it possible to easily eliminate the trouble that has occurred in the circulation line 20.

<First replacement chamber 31>
For example, in this embodiment, the circulation line 20 is provided with a first replacement chamber 31 at one end of the continuous firing furnace 10 on the carry-in port 11 side of the furnace body 13. When the firing vessel A is introduced into the first replacement chamber 31, for example, the shutter 31a on the opposite side of the first replacement chamber 31 is opened while the shutter 31b on the continuous firing furnace 10 side is closed. .. Then, in this state, the firing container A is introduced into the first replacement chamber 31. Next, the shutter 31a on the side opposite to the continuous firing furnace 10 side is closed, the firing vessel A is fastened to the first replacement chamber 31, and the gas atmosphere of the first replacement chamber 31 is adjusted. For example, the first replacement chamber 31 may be adjusted to a predetermined gas atmosphere suitable for being introduced into the carry-in inlet 11 of the continuous firing furnace 10. For example, the gas composition, temperature, pressure, and the like of the first replacement chamber 31 may be appropriately adjusted. The first replacement chamber 31 may appropriately incorporate a mechanism for adjusting the gas atmosphere. The first replacement chamber 31 functions as an adjustment chamber for making it difficult for the atmosphere of the circulation line 20 to enter the atmosphere in the furnace body 13 of the continuous firing furnace 10. For example, the first replacement chamber 31 may be adjusted to a negative pressure more than in the furnace body 13 of the continuous firing furnace 10. After the atmosphere of the first replacement chamber 31 is adjusted, the shutter 31b on the carry-in port 11 side of the continuous firing furnace 10 is opened, and the firing container A is carried out from the first replacement chamber 31 to the carry-in inlet 11 of the continuous firing furnace 10. It should be done. As a result, the atmosphere of the first replacement chamber 31 is less likely to affect the inside of the furnace body 13 of the continuous firing furnace 10. It is preferable that the space between the first replacement chamber 31 and the carry-in port 11 of the continuous firing furnace 10 is covered with a hood 11a and shielded from the outside atmosphere.

<Second replacement chamber 32>
Further, in this embodiment, the circulation line 20 is provided with a second replacement chamber 32 at one end of the continuous firing furnace 10 on the carry-out port 12 side of the furnace body 13. When the firing vessel A is introduced into the second replacement chamber 32, for example, the continuous firing furnace 10 side is in a state where the shutter 32b on the side opposite to the continuous firing furnace 10 side of the second replacement chamber 32 is closed. Shutter 32a is opened. Then, in this state, the firing container A is introduced into the second replacement chamber 32. Next, the shutter 32a on the continuous firing furnace 10 side is closed, the firing vessel A is fastened to the second replacement chamber 32, and the gas atmosphere of the second replacement chamber 32 is adjusted. For example, the second replacement chamber 32 may be adjusted to a predetermined gas atmosphere suitable for being introduced into the circulation line 20. The second replacement chamber 32 functions as an adjusting chamber for making it difficult for the atmospheric gas of the continuous firing furnace 10 to enter the circulation line 20. For example, even when toxic gas such as hydrogen sulfide is generated in the continuous firing furnace 10 by firing, the gas generated in such continuous firing furnace 10 is provided by providing the second replacement chamber 32. It is possible to prevent entry into the circulation line 20. It is preferable that the carry-out port 12 of the continuous firing furnace 10 and the second replacement chamber 32 are covered with a hood 12a and shielded from the outside atmosphere. After the atmosphere of the second replacement chamber 32 is adjusted, the shutter 32a on the carry-in port 11 side of the continuous firing furnace 10 is closed, the shutter 32b on the circulation line 20 side is opened, and the circulation line 20 is opened from the second replacement chamber 32. It is preferable that the firing container A is carried out.

The circulation line 20 includes a take-out unit 23 and a supply unit 24. The take-out unit 23 is an apparatus unit for taking out a fired product from the firing container A. The supply unit 24 is an apparatus unit that supplies an unfired object to be fired to the firing container. The take-out unit 23 and the supply unit 24 are connected to a circulation space 22 surrounded by a hood 21, respectively. It is preferable to have processing spaces 23a and 24a separated from the external space. Thereby, in the circulation line 20, in the space separated from the external space, the fired product can be taken out from the fired container A, and the fired product can be supplied to the fired container A. Therefore, the firing process can be performed while maintaining high quality of the fired product fired in the continuous firing furnace 10 and the product to be fired introduced into the continuous firing furnace 10.

The supply unit 24 is provided on the carry-in port 11 side of the continuous firing furnace 10 with respect to the take-out unit 23 in the circulation line 20. As a result, the fired product that has been processed in the take-out unit 23 is taken out from the circulation line 20, and then the unfired product is supplied in the supply unit 24. Therefore, it is difficult for the unfired fired product to be mixed with the processed fired product taken out from the take-out unit 23.

In this embodiment, the circulation line 20 includes a third replacement chamber 33, a fourth replacement chamber 34, and a fifth replacement chamber 35. The third replacement chamber 33, the fourth replacement chamber 34, and the fifth replacement chamber 35 are each surrounded by a partition wall. The third replacement chamber 33 is provided on the upstream side of the take-out unit 23 in the circulation line 20. In other words, the third replacement chamber 33 is provided between the carry-out port 12 of the furnace body 13 and the take-out unit 23 in the circulation line 20. Therefore, if there is a problem with the take-out unit 23, or if there is a problem on the upstream side of the take-out unit 23, by closing the third replacement chamber 33, the circulation line 20 is set on the upstream side of the take-out unit 23. It can be separated from the take-out unit 23. Therefore, it becomes easy to solve the trouble on the take-out unit 23 and the upstream side of the take-out unit 23.

The fourth replacement chamber 34 is provided between the take-out unit 23 and the supply unit 24. Therefore, when there is a problem with the take-out unit 23 or when there is a problem with the supply unit 24, the circulation line 20 can be partitioned between the take-out unit 23 and the supply unit 24. It becomes easy to solve the trouble in the take-out unit 23 and the supply unit 24.

The fifth replacement chamber 35 is provided on the downstream side of the supply unit 24 in the circulation line 20. Therefore, if there is a problem in the supply unit 24 or if there is a problem in the downstream side of the supply unit 24, the circulation line 20 on the downstream side of the supply unit 24 can be partitioned. Therefore, it becomes easy to solve the trouble on the downstream side of the supply unit 24 and the supply unit 24.

<External branch lines 81-84>
Further, in this embodiment, the circulation line 20 includes at least one external branch line 81 to 84 that is at least partially branched from the circulation line 20 and extends out of the circulation space 22. By providing the external branch lines 81 to 84, it becomes easy to take out the firing container A from the circulation line 20 and to introduce the firing container A into the circulation line 20. Further, since the circulation line 20 is provided with a plurality of external branch lines 81 to 84, the firing container A can be taken out and introduced at a plurality of positions. Therefore, it becomes easy to solve the trouble of the circulation line 20 covering the hood 21 in particular.

<Replacement chambers 91-94>
Further, in this embodiment, the external branch lines 81 to 84 are provided with replacement chambers 91 to 94 at the end where they join the circulation line 20. The replacement chambers 91 to 94 are provided with shutters 91a to 94a and 91b to 94b (see FIGS. 1 and 2) on the external branch line 81 to 84 side and the side merging with the circulation line 20, respectively. In the replacement chambers 91 to 94, it is usually preferable that the shutters 91a to 94a and 91b to 94b are closed. Then, when the firing container A is taken out from the circulation line 20 or the firing container A is introduced into the circulation line 20, one shutter on the side where the firing container A is introduced is opened. Then, when the firing container A is introduced into the replacement chambers 91 to 94, the shutter is closed and the atmosphere of the replacement chambers 91 to 94 is adjusted. After that, the other shutter is opened and the firing vessel A is carried out from the replacement chambers 91 to 94. As described above, the replacement chambers 91 to 94 have an atmosphere so that the atmosphere of the external branch lines 81 to 84 does not affect the circulation line 20 when the firing container A is taken out or introduced through the external branch lines 81 to 84. Can be adjusted.

Next, the configuration of the circulation line 20 in this embodiment will be further described. In this embodiment, the transport path of the continuous firing furnace 10 is set along a straight line as shown in FIG. On the other hand, the circulation line 20 has a linear transport unit 41, a first connection unit 42, and a second connection unit 43. The circulation line 20 has a linear transport section 41. FIG. 2 is a side view schematically showing the linear transport portion 41 of the circulation line 20.

<Straight line transport unit 41>
As shown in FIG. 1, the linear transfer unit 41 is provided at a position away from the continuous firing furnace 10 in the circulation line 20, and is along a straight line parallel to the transfer path of the continuous firing furnace 10. It is a transport site. The first connection portion 42 is a connection portion of the circulation line 20 that is continuous with the carry-out port 12 side of the continuous firing furnace 10 and connects the transport path of the continuous firing furnace 10 and the linear transport portion 41. The second connection portion 43 is a connection portion that is continuous with the carry-in inlet side of the continuous firing furnace 10 and connects the transport path of the continuous firing furnace 10 and the linear transport portion 41. As described above, the circulation line 20 has a linear transfer section 41 parallel to the continuous firing furnace 10 along a straight line. The entire continuous firing system including the circulation line 20 can be installed in a substantially rectangular space, and the space is saved as a whole centering on the continuous firing furnace 10.

<First connection part 42>
In this embodiment, the first connecting portion 42 includes a first extending portion 42a and a cross-linking portion 42b. The first extension portion 42a is a transport portion that extends continuously and linearly from the transport path of the continuous firing furnace 10 at the carry-out port 12 of the continuous firing furnace 10. In the form shown in FIG. 1, the first extending portion 42a is short, but the length can be appropriately adjusted depending on the aspect of the linear conveying portion 41. The cross-linking portion 42b is a transport portion that connects one end of the first extension portion 42a of the circulation line 20 and one end of the linear transport portion 41 on the carry-out port 12 side of the continuous firing furnace 10. A roller conveyor and a driving device thereof are incorporated in the cross-linking portion 42b. Branching portions 42b1 and 42b2 are provided at both ends of the cross-linking portion 42b, that is, at the portion where the first extending portion 42a and the cross-linking portion 42b intersect, and at the portion where the cross-linking portion 42b and the linear transport portion 41 intersect. There is.

<Branch portion 42b1>
The branching portion 42b1 incorporates roller conveyors having different orientations so as to move the firing container A in the direction in which the first extending portion 42a extends and in the direction in which the cross-linking portion 42b extends. In this embodiment, the roller that moves the firing container A in the direction in which the cross-linking portion 42b extends protrudes from the gap of the roller group that moves the firing container A in the direction in which the first extending portion 42a extends. .. In the branch portion 42b1, a roller that moves the firing container A in the direction in which the cross-linking portion 42b extends is appropriately pushed out and driven. As a result, the firing container A introduced from the first extending portion 42a into the branch portion 42b1 is carried out to the cross-linking portion 42b.

<Branch portion 42b2>
The branch portion 42b2 incorporates roller conveyors having different orientations so as to move the firing container A in the direction in which the linear transport portion 41 extends and in the direction in which the cross-linking portion 42b extends. In this embodiment, the roller that moves the firing vessel A in the direction in which the cross-linking portion 42b extends is pushed out from the gap of the roller group that moves the firing vessel A along the direction in which the linear transport portion 41 extends. There is. Then, in the branch portion 42b1, the firing container A is introduced from the cross-linking portion 42b to the branch portion 42b2 by pushing out the roller that moves the firing container A in the direction in which the cross-linking portion 42b extends. Then, the roller that moves the firing vessel A in the direction in which the cross-linking portion 42b extends is retracted under the roller group that moves the firing vessel A in the direction in which the linear transport portion 41 extends, and the roller is fired along the direction in which the linear transport portion 41 extends. The rollers that move the container A are driven. As a result, the firing container A introduced from the cross-linked portion 42b to the branch portion 42b2 is transported to the linear transport portion 41.

<Second connection part 43>
In this embodiment, the second connecting portion 43 includes a second extending portion 43a and a cross-linking portion 43b. The second extension portion 43a is a transport portion that extends continuously and linearly from the transport path of the continuous firing furnace 10 at the carry-in inlet 11 of the continuous firing furnace 10. The cross-linking portion 43b is a transport portion that connects one end of the second extension portion 43a of the circulation line 20 and one end of the linear transport portion 41 on the carry-in inlet 11 side of the continuous firing furnace 10. A roller conveyor and a driving device thereof are incorporated in the cross-linking portion 43b. Branching portions 43b1 and 43b2 are provided at both ends of the bridging portion 43b, that is, at the portion where the second extending portion 43a and the bridging portion 43b intersect, and at the portion where the bridging portion 43b and the linear transport portion 41 intersect. There is. The bridge portion 43b is surrounded by a tunnel-shaped hood 21. The branch portions 43b1 and 43b2 have the same structure as the branch portions 42b1 and 42b2 on the carry-out port 12 side described above. Of these, the branch portion 43b2 incorporates roller conveyors having different orientations so that the firing container A introduced into the branch portion 43b2 can be sent from the straight transfer portion 41 to the cross-linking portion 43b. Further, in the branch portion 43b1, roller conveyors having different orientations are incorporated so that the firing container A introduced into the branch portion 43b1 can be sent from the cross-linking portion 43b to the second extension portion 43a.

According to the circulation line 20, as shown in FIG. 1, the firing vessel A is carried out from the carry-out port 12 of the continuous firing furnace 10, and then has a first extension portion 42a, a branch portion 42b1, and a cross-linking portion. It is introduced into the carry-in port 11 of the continuous firing furnace 10 through the branch portion 42b2, the straight transfer portion 41, the branch portion 43b1, the cross-linking portion 43b, the branch portion 43b2, and the second extension portion 43a. Here, the first extending portion 42a, the branch portion 42b1, the bridging portion 42b, the branch portion 42b2, the linear transport portion 41, the branch portion 43b1, the bridging portion 43b, the branch portion 43b2, and the second extending portion 43a constituting the circulation line 20. Each has a hood 21 that separates the circulation space 22 from the external space. In this way, by having the hood 21 at each portion constituting the circulation line 20, the circulation space 22 in which the firing container A circulates can be adjusted to an appropriate atmosphere. For example, the firing container A can be circulated without being exposed to the outside atmosphere. Therefore, the quality of the product to be fired and the product to be fired can be maintained high. Further, even when it is necessary to handle the object to be fired or the fired object in a peculiar atmosphere, it is possible to prevent the atmosphere from leaking to the outside. Therefore, the influence on the external environment can be suppressed to a small extent.

In this embodiment, the first replacement chamber 31 is provided at the end of the second extending portion 43a of the circulation line 20 provided on the carry-in port 11 side of the continuous firing furnace 10. Further, a second replacement chamber 32 is provided at the end of the first extension portion 42a of the circulation line 20 provided on the carry-out port 12 side of the continuous firing furnace 10. The first replacement chamber 31 and the second replacement chamber 32 function as adjustment chambers that divide the atmosphere between the continuous firing furnace 10 and the circulation line 20.

Further, the branch portion 42b1 is provided with an external branch line 82. The branch portion 42b2 is provided with an external branch line 83. The branch portion 43b1 is provided with an external branch line 83. The branch portion 43b2 is provided with an external branch line 81. Therefore, the firing container A can be taken out and introduced at the branch portions 42b1, 42b2, 43b1, 43b2, respectively. Further, the external branch lines 81 to 84 are provided with replacement chambers 91 to 94, respectively. By closing the replacement chambers 91 to 94, the external branch lines 81 to 84 are appropriately separated from the circulation line 20. The external branch line and the replacement chamber may be provided at appropriate positions on the circulation line 20. The position where the external branch line and the replacement chamber are provided is not limited to the form shown in FIG. 1, and may be added as appropriate or omitted as appropriate.

FIG. 2 is a side view showing the linear transport unit 41. As shown in FIG. 2, in this embodiment, the straight transfer section 41 is a bridge section 43b arranged on the carry-in port 11 side from a branch portion 42b2 at one end of the bridge section 42b arranged on the carry-out port 12 side. It constitutes a transport line along a straight line leading to the branch portion 43b1 at one end of the above. The linear transport unit 41 is provided with a roller conveyor in which rollers for transporting the firing container A are arranged. The circulation space 22 to which the firing container A is conveyed is covered with the hood 21. The linear transport unit 41 is provided with a take-out unit 23 and a supply unit 24. The supply unit 24 is provided on the carry-in port 11 side of the continuous firing furnace 10 with respect to the take-out unit 23 in the circulation path of the circulation line 20. As described above, the take-out unit 23 and the supply unit 24, each of which has a complicated device configuration in the circulation line 20, are provided in the linear transfer section 41 provided in parallel with the continuous firing furnace 10. Therefore, the space of the circulation line 20 for circulating the firing container A in the continuous firing furnace 10 can be saved.

<< 3rd replacement chamber 33, 4th replacement chamber 34, 5th replacement chamber 35 >>
The linear transport unit 41 is provided with a third replacement chamber 33 on the upstream side of the take-out unit 23. Specifically, the third replacement chamber 33 is provided at a portion where the cross-linking portion 42b and the straight transfer portion 41 are introduced into the straight transfer portion 41 from the branch portion 42b2. By providing the third replacement chamber 33 in such a portion, the cross-linking portion 42b and the branch portion 42b2 can be partitioned from the linear transport portion 41. Further, the linear transport unit 41 is provided with a fifth replacement chamber 35 on the downstream side of the supply unit 24. Specifically, the fifth replacement chamber 35 is provided at a portion introduced into the linear transport portion 41 from the branch portion 43b1 between the linear transport portion 41 and the cross-linking portion 43b. By providing the fifth replacement chamber 35 in such a portion, the cross-linking portion 42b and the branch portion 43b1 can be separated from the linear transport portion 41. Further, a fourth replacement chamber 34 is provided between the take-out unit 23 and the supply unit 24. The fourth replacement chamber 34 can partition the portion of the linear transport unit 41 provided with the take-out unit 23 and the portion provided with the supply unit 24, respectively.

<< Extraction unit 23 >>
The take-out unit 23 includes at least one take-out device. In this embodiment, the firing container A is a set of a container and a lid. The take-out unit 23 includes a lid removing mechanism 70a for removing the lid from the firing container A. In this embodiment, the take-out unit 23 includes a lid removing mechanism 70a, a first take-out device 50a, and a second take-out device 50b in order from the upstream side of the linear transport unit 41.

<Cover removal mechanism 70a>
The lid removing mechanism 70a is provided in the linear transport unit 41 and has a stopper for stopping the introduced firing container A at a predetermined position. A mechanism for removing the lid from the firing container A is provided on the upper portion of the lid removing mechanism 70a. The lid removing mechanism 70a may include, for example, a hand for holding the lid and a lift for pulling the hand to the upper part of the firing container A. In this embodiment, the lid removing mechanism 70a includes a third cover 71 that shields the space from which the lid is removed from the firing container A from the external space. The space surrounded by the third cover 71 is continuous with the space surrounded by the hood 21 of the circulation line 20. Therefore, the lid of the firing container A is removed without touching the outside atmosphere. The firing container A from which the lid has been removed is sequentially sent to the extraction devices 50a and 50b. In this embodiment, the lid is held by the lid removing mechanism 70a even after the firing container A is sent to the extraction devices 50a and 50b. Then, after being processed by the extraction devices 50a and 50b, the firing container A is returned to the lid removing mechanism 70a, and after the lid is set, it is sent to the supply unit 24. Therefore, of the linear transport unit 41, at least between the lid removing mechanism 70a and the take-out devices 50a and 50b, the firing container A is configured to be appropriately transported in the opposite direction. As described above, the take-out unit 23 includes a lid removing mechanism 70a. Therefore, the fired product is appropriately taken out from the fired container A provided with the lid.

<Extracting devices 50a, 50b>
The extraction devices 50a and 50b include a reversing mechanism 51, a collecting unit 52, and a first cover 53.

<Reversal mechanism 51>
The reversing mechanism 51 is a mechanism for reversing the firing container A up and down. In this embodiment, the reversing mechanism 51 is a mechanism for reversing the firing container A up and down together with the rollers of the linear transport unit 41. The contents (baked matter) are discharged from the fired container A inverted upside down. The collecting unit 52 is a portion for collecting the contents of the firing container A below the position where the firing container A is inverted. The first cover 53 is a cover that shields the space where the firing container A is inverted from the external space. The space surrounded by the first cover 53 is continuous with the space surrounded by the hood 21 of the circulation line 20. The firing container A is turned upside down in a space partitioned from the external space by the first cover 53. In this way, in the take-out devices 50a and 50b, the space for turning the firing container A upside down is partitioned from the external space by the first cover 53. Therefore, the atmosphere of the space when the contents of the firing container A are discharged is appropriately maintained.

In this embodiment, the collecting unit 52 is provided with a mortar-shaped collecting tube 52a below the reversing mechanism 51. A collection pipe 52b is attached to the lower end of the collection pipe 52a, and a collection container 52c is provided at the end of the collection pipe 52b. The fired product dropped from the inverted firing container A is housed in the collecting container 52c through the collecting pipe 52a and the collecting pipe line 52b. Here, the mortar-shaped collecting portion of the collecting tube 52a is arranged inside the first cover 53, and the fired product is housed in the collecting container 52c without touching the outside atmosphere.

3 and 5 are side views schematically showing the reversing mechanism 51. 4 and 6 are front views schematically showing the reversing mechanism 51. FIG. 4 shows a view seen from the IV-IV cross section in FIG. 3 and 4 show the state before the inversion mechanism 51 is inverted, respectively. 5 and 6 show a state in which the reversing mechanism 51 shown in FIGS. 3 and 4 is inverted up and down, respectively. FIG. 6 shows a view seen from the VI-VI cross section in FIG. Here, according to FIG. 1, the left and right sides are defined from the carry-in port 11 of the continuous firing furnace 10 toward the carry-out port 12, with the carry-out port 12 side of the continuous firing furnace 10 as the front and the carry-in inlet 11 side as the rear. ing. In FIGS. 3 to 6, front / rear / left / right are defined accordingly. However, the front and back of the transport direction A1 of the linear transport unit 41 is opposite to the front and back specified in the drawing. The firing container A is introduced into the reversing mechanism 51 along the transport direction A1 of the linear transport section 41 indicated by the arrow in FIG.

As shown in FIGS. 3 and 4, the reversing mechanism 51 includes a pair of left and right rotating plates 51a and 51b, a rotary actuator 51c, a pair of left and right clamping members 51d, an unclamping mechanism 51e, and a roller 51f. , With a stopper 51 g.

The pair of rotating plates 51a and 51b are arranged on the left and right sides of the straight line conveying portion 41 in the width direction. The rotating plates 51a and 51b are disk-shaped members, respectively. The rotating shafts 51a1 and 51b1 of the rotating plates 51a and 51b are attached to the first cover 53 of the take-out device 50a. The rotation shafts 51a1, 51b1 of the rotation plates 51a, 51b are directed in the width direction of the linear transport portion 41. The roller 51f forms a part of the roller conveyor of the linear conveyor 41. The roller 51f is mounted on a shaft spanned by a pair of rotating plates 51a and 51b. In this embodiment, four rollers 51f for supporting the firing container A are attached to a pair of rotating plates 51a and 51b. As shown in FIG. 3, the heights of the four rollers 51f are adjusted to the rollers of the roller conveyor of the linear conveyor 41.

The stopper 51g is a mechanism for stopping the firing container A at a predetermined position on the rollers 51f provided on the rotating plates 51a and 51b. As shown in FIG. 3, in this embodiment, the pair of left and right rotating plates 51a and 51b are provided with a rotating shaft 51g1 having a stopper 51g. The rotation shaft 51g1 is provided on the lower side of the roller 51f and slightly behind the firing container A in the linear transport portion 41 in the traveling direction. The stopper 51g is arranged between the pair of left and right rotating plates 51a and 51b. The stopper 51g has a stopper piece 51g2 that extends below the roller 51f from the rotation shaft 51g1 and rises in front of the roller 51f arranged in front of the transport direction A1 of the firing container A. Further, a drive mechanism for moving the stopper 51g is provided on the outside of the pair of left and right rotating plates 51a and 51b.

FIG. 3 shows a state in which the baking vessel A is stopped on the rollers 51f arranged between the pair of left and right rotating plates 51a and 51b with the stopper 51g raised. Further, the firing container A is indicated by a two-dot chain line. In this embodiment, the stopper 51g is provided with a pusher 51g3 that lifts the stopper 51g from below in front of the rotation shaft 51g1 in the transport direction A1. The pusher 51g3 is built in a state where the spring is compressed, the stopper 51g rotates upward, the stopper piece 51g2 projects upward from the roller 51f, and the firing container A is stopped at a predetermined predetermined position. .. It is preferable that the stopper piece 51g2 has a cushioning material attached to the portion where the firing container A hits.

On the other hand, the rotation shaft 51g1 has an operation piece 51g4 extending rearward. Below the operation piece 51g4, a cylinder mechanism 51g5 that drives the operation piece 51g4 in a lifting direction is provided. Although not shown, the cylinder mechanism 51g5 lifts the operation piece 51g4 to rotate the rotation shaft 51g1 and the stopper 51g to rotate downward. As a result, the stopper piece 51g2 is lowered below the roller 51f. Then, by rotating the roller 51f, the firing container A is transported along the transport direction A1 of the linear transport unit 41. As the roller 51f, a so-called motor roller having a built-in motor is adopted. A terminal is provided at the end of the roller 51f. For example, as shown in FIGS. 3 and 4, in a posture in which the roller 51f forms a part of the roller conveyor of the linear conveyor 41, terminals provided at the ends of the rollers are connected and incorporated. It is preferable that the roller 51f is appropriately driven by sending an electric signal to the motor.

Note that FIG. 3 is a view seen from the axial direction of 51b1 of the pair of left and right rotating plates 51a and 51b, and the structure of the reversing mechanism 51 including the stopper 51g is schematically shown. Here, the stopper 51g, the rotating shaft 51g1, the pusher 51g3, and the operation piece 51g4 are attached to the pair of left and right rotating plates 51a and 51b, and rotate together with the pair of left and right rotating plates 51a and 51b. The cylinder mechanism 51g5 is fixed separately from the pair of left and right rotating plates 51a and 51b.

The reversing mechanism 51 includes a rotary actuator 51c, a pair of left and right clamp members 51d, and an unclamping mechanism 51e. The pair of left and right clamp members 51d are attached to the pair of left and right rotating plates 51a and 51b. The pair of left and right clamp members 51d are provided with clamps 51d1 inside the pair of left and right rotating plates 51a and 51b. The clamp 51d1 has a shaft penetrating the rotating plates 51a and 51b, and a connecting portion 51d2 connected to the unclamping mechanism 51e is provided on the outside of the rotating plates 51a and 51b. A spring 51d3 is installed between the clamp 51d1 and the rotating plates 51a and 51b in a compressed state.

Therefore, when the unclamping mechanism 51e is not working, the left and right clamps 51d1 are pushed inward from the rotating plates 51a and 51b, respectively. Therefore, as shown in FIGS. 3 and 4, the firing vessel A arranged at a predetermined position on the roller 51f is sandwiched and held by the left and right clamps 51d1. It is preferable that the clamp 51d1 has a cushioning material attached to the portion corresponding to the firing container A. The unclamping mechanism 51e is provided on the first cover 53 of the reversing mechanism 51. The unclamping mechanism 51e includes a cylinder 51e1 and an operating shaft 51e2 driven by the cylinder 51e1. The tip of the operating shaft 51e2 is provided with a knob portion that extends in the radial direction. On the other hand, the connecting portion 51d2 is a box-shaped member and has a recess 51d4 in which the operation shaft 51e2 is accommodated, and the recess 51d4 opens to the rear side in the reversal direction in the circumferential direction of the rotating plates 51a and 51b. ing.

As shown in FIGS. 3 and 4, before the rotating plates 51a and 51b are inverted, the operating shaft 51e2 of the unclamping mechanism 51e is housed in the recess 51d4 of the connecting portion 51d2 of the clamp 51d1. At this time, the cylinder 51e1 of the unclamping mechanism 51e extends inward with respect to the rotating plates 51a and 51b. At this time, the unclamping mechanism 51e opens the clamp 51d1, and the clamp 51d1 projects inward with respect to the left and right rotating plates 51a and 51b by the action of the spring 51d3. The firing vessel A stopped at a predetermined position on the rollers 51f of the rotating plates 51a and 51b by the stopper 51g is held at that position by the clamp 51d1. It is preferable that the clamp 51d1 is provided with a fall prevention piece extending so as to face the upper edge of the firing container A.

The unclamp mechanism 51e is a mechanism that pulls the connecting portion 51d2 of the clamp 51d1 outward with respect to the rotating plates 51a and 51b. In this embodiment, before the rotating plates 51a and 51b are inverted, the operation shaft 51e2 of the unclamping mechanism 51e is fitted in the recess 51d4 of the connecting portion 51d2 of the clamp 51d1 as shown in FIGS. 3 and 4. ing. In this state, when the operation shaft 51e2 is pulled outward with respect to the rotating plates 51a and 51b by the cylinder 51e1 of the unclamping mechanism 51e, the clamp 51d1 is pulled outward. Therefore, the firing container A sandwiched between the clamps 51d1 is opened. Therefore, when the firing container A is introduced into the take-out device 50a along the transport direction A1 of the linear transport unit 41, or when the firing container A is carried out from the take-out device 50a, the firing container is operated by the unclamping mechanism 51e. It is good that A is open. Then, the firing container A is introduced into the take-out device 50a, and the unclamping mechanism 51e is opened in a state of being stopped at a predetermined position by the stopper 51g. When the unclamp mechanism 51e is opened, the clamp 51d1 moves inward with respect to the rotating plates 51a and 51b due to the elastic reaction force of the spring 51d3, and the firing container A is held as shown in FIG.

The rotary actuator 51c is connected to the rotating shaft 51a1 of the rotating plate 51a. The rotating shaft 51a1 of the rotating plate 51a penetrates the first cover 53. The rotary actuator 51c is provided on the outside of the first cover 53. On the other hand, the rotating shaft 51b1 of the rotating plate 51b is supported by the first cover 53 via a bearing 51b2 so as to drive the first cover 53. The left and right rotating plates 51a and 51b are provided with a plurality of support shafts 51h in the circumferential direction. The support shaft 51h maintains a distance between the left and right rotating plates 51a and 51b. The left and right rotating plates 51a and 51b are connected by a shaft supported by a support shaft 51h and a roller 51f. Therefore, the other rotating plate 51b rotates synchronously with the rotating plate 51a. The rotary actuator 51c has a built-in servomotor. The rotary actuator 51c rotates a pair of rotating plates 51a and 51b in a predetermined direction through the rotating shaft 51a1.

In this extraction device 50a, as shown in FIGS. 3 and 4, the reversing mechanism 51 is a firing container at a predetermined position on the roller 51f by a clamp 51d1 attached to the rotating plates 51a, 51b. Hold A. Then, by rotating the pair of rotating plates 51a and 51b in a predetermined reversing direction by the rotary actuator 51c, the roller 51f and the firing container A are turned upside down together as shown in FIGS. 5 and 6. do. As a result, the contents of the firing container A fall. As described above, a mortar-shaped collecting portion of the collecting pipe 52a is provided under the taking-out device 50a. As a result, the fired product carried from the continuous firing furnace 10 by the firing container A is housed in the collection container 52c through the collection pipe 52a and the collection pipe 52b.

Here, the reversing mechanism 51 of the extraction device 50a has been described. A similar reversing mechanism 51 is also used in the take-out device 50b. Although one embodiment of the reversing mechanism 51 has been described, the specific structure of the reversing mechanism 51 is not limited to such a form.

<Cleaning mechanism 54>
The take-out device 50 may further include a cleaning mechanism 54 (see FIG. 2) for cleaning the firing container A. In this embodiment, of the two extraction devices 50a and 50b, the extraction device 50b arranged behind in the traveling direction is provided with the cleaning mechanism 54. As described above, the take-out unit 23 includes a take-out device 50a not provided with the cleaning mechanism 54 and a take-out device 50b provided with the cleaning mechanism 54.

In this embodiment, the cleaning mechanism 54 is configured by a brushing mechanism for brushing the inside of the firing container A. The brushing mechanism is a mechanism for brushing the inside of the firing container A placed upward from above. The cleaning mechanism 54 includes a brush and an arm for operating the brush, and moves the brush along the inside of the firing container A while rotating or vibrating the brush so that the inside of the firing container A can be brushed as a whole. It is configured in. It is preferable that the take-out device 50b provided with the cleaning mechanism 54 brushes the inside of the firing container A as a whole and then turns the firing container A upside down. The fired material remaining in the fired container A is dropped into the collection pipe 52a. As a result, the fired product is less likely to remain in the fired container A, and the fired product can be collected in the collection container 52c. As the cleaning mechanism 54, a mechanism for brushing the firing container A was exemplified. The cleaning mechanism 54 is not limited to such a form. The cleaning mechanism 54 may be, for example, an airbrush that blows air into the firing container A. Further, a suction device for sucking the remaining fired material in the fired container A may be used.

The extraction devices 50a and 50b include a shutter 55 that separates the space surrounded by the first cover 53 and the space surrounded by the hood 21 of the circulation line 20. The shutters 55 may be provided before and after the take-out devices 50a and 50b, respectively. The shutter 55 may be closed from the time the firing container A is introduced into the take-out devices 50a and 50b until it is carried out. In this way, in the extraction devices 50a and 50b, the space for inverting the firing container A upside down is partitioned from the external space by the first cover 53, and the space surrounded by the first cover 53 and the circulation line 20. A shutter 55 that separates the space surrounded by the hood 21 is provided. When the shutter 55 is closed, the reversing mechanism 51 is turned upside down and the firing container A is turned upside down, or when the inside of the firing container A is cleaned by the cleaning mechanism 54, for example, when brushing is performed. It is possible to prevent objects from scattering outside the extraction devices 50a and 50b.

The firing container A from which the fired product has been taken out by the take-out devices 50a and 50b is sent to the supply unit 24. In this embodiment, the lid of the firing container A is removed by the lid removing mechanism 70a, the fired product is taken out by the taking-out device 50a and the taking-out device 50b, and then the fired product is returned to the lid removing mechanism 70a and the lid is set. Then, after the lid is set, it is sent to the supply unit 24 through the linear transport unit 41. In this embodiment, a third replacement chamber 33 is provided between the take-out unit 23 and the supply unit 24. Therefore, the atmosphere is adjusted in the third replacement chamber 33 and sent to the supply unit 24. For example, in the take-out unit 23, the atmosphere may be adjusted according to the properties of the fired product. In the supply unit 24, the atmosphere may be adjusted according to the properties of the object to be fired. For example, when the object to be fired has a property of reacting with oxygen or water vapor, the oxygen concentration and the dew point may be adjusted in the supply unit 24.

<Supply unit 24>
The supply unit 24 includes a supply device 60 for supplying the object to be fired. The supply device 60 includes a hopper 61, a feeder 62, and a second cover 63. In this embodiment, the supply unit 24 includes a second lid removing mechanism 70b for removing the lid from the firing container A. The lid removing mechanism 70b is provided on the upstream side of the supply unit 24. The structure of the lid removing mechanism 70b is the same as that of the lid removing mechanism 70a described above. Here, the description of the lid removing mechanism 70b will be omitted. In the supply unit 24, the firing container A moves under the supply device 60 after the lid is removed by the lid removing mechanism 70b. As described above, since the supply unit 24 is provided with the lid removing mechanism 70b, it is possible to appropriately supply the object to be fired to the firing container A having the lid.

The hopper 61 is a container for accommodating the object to be fired supplied to the firing container A. The hopper 61 has an input port into which the object to be fired is introduced at the upper part, and an discharge port at the lower part from which the object to be fired is discharged. A feeder 62 is connected to the discharge port. The feeder 62 is a device for supplying the object to be fired from the hopper 61 to the firing container A. A predetermined amount of the object to be fired is supplied from the hopper 61 to the firing container A. The second cover 63 is a cover that shields the space from which the object to be fired is supplied to the firing container A from the external space. The space surrounded by the second cover 63 is continuous with the space surrounded by the hood 21 of the circulation line 20. The space surrounded by the second cover 63 may be adjusted with the required atmospheric gas. This maintains the quality of the object to be fired. The supply unit 24 may be further provided with a mechanism for leveling the object to be fired charged into the firing container A. The leveling mechanism may be, for example, a mechanism for leveling the contents by vibrating the firing container A. Further, a blade operated along the firing container A may be provided.

In the supply unit 24, the firing container A from which the fired product is taken out by the take-out unit 23 is introduced. In the supply unit 24, the lid is removed from the firing container A in the lid removing mechanism 70b. After that, it is sent to the supply device 60, and after the object to be fired is supplied, it is returned to the lid removing mechanism 70b and the lid is set. Then, after the lid is set, the firing container A is sent to the continuous firing furnace 10 through the linear transfer unit 41.

As shown in FIG. 2, the continuous firing system 1 may include a control device 100. The control device 100 may be configured to control the transfer of the firing vessel A in the continuous firing furnace 10 and the circulation line 20, for example. For example, in the take-out unit 23 arranged in the circulation line 20, each process of the lid removing mechanism 70a, the first take-out device 50a, the second take-out device 50b, the transfer of the firing container A, and the like are performed. It may be controlled by a predetermined sequence control. Further, in the supply unit 24, the transfer of the lid removing mechanism 70b, the feeder 62, the firing container A, and the like may be controlled by predetermined sequence control. Further, opening / closing of each of the replacement chambers 31 to 35, control of atmospheric gas, transportation in the branch portions 42b1, 42b2, 43b1, 43b2, etc. may be controlled by sequence control. This can provide a continuous firing system with less intervention of human intervention. Although sequence control is mentioned here, it is not limited to sequence control and may be controlled by sensing the firing vessel A. As the continuous firing system 1, various control methods may be appropriately adopted.

As described above, the continuous firing system 1 includes a circulation line 20 for circulating the firing container A with respect to the continuous firing furnace 10. The circulation line 20 has a hood 21 outside the continuous firing furnace 10 that separates the circulation space 22 from the carry-out port 12 to the carry-in inlet 11 of the continuous firing furnace 10 from the external space. Therefore, in the circulation line 20, the quality of the product to be fired and the product to be fired can be maintained high.

The circulation line 20 is provided with a take-out unit 23 and a supply unit 24. The take-out unit 23 and the supply unit 24 each have a cover that blocks the internal space and the external space. The space surrounded by the cover is continuous with the space surrounded by the hood 21 of the circulation line 20. Therefore, the fired product can be taken out without being exposed to the outside atmosphere. Further, the object to be fired can be supplied to the firing container A without being exposed to the external atmosphere. From this point of view, the continuous firing system 1 is not limited to the above-described embodiment.

FIG. 7 is a side view showing the circulation line 20A in another embodiment. The circulation line 20A shown in FIG. 7 is arranged at a low position as a whole, but the take-out unit 23 arranged at the linear transport unit 41 is placed at a high position so that an operator can enter under the take-out unit 23. Have been placed. This facilitates the handling of the collection container 52c. In addition, the circulation line 20A can be lowered at other sites. Therefore, the height of the hopper 61 of the supply unit 24 can be kept low. In addition, the collection container 52c can be increased in size. In this case, it is preferable that lifters 101 and 102 for raising and lowering the firing container A are provided before and after the take-out unit 23, respectively.

Further, in this embodiment, of the hood 21A of the circulation line 20A, the hood 21A1 of the portion provided with the front and rear lifters 101 and 102 and the take-out unit 23 is integrally configured. The hood 21A1 of the portion is raised from the floor of the space where each facility is placed. As described above, the hood 21A1 of the circulation line 20 may be combined with the floor of the space where the circulation space 22 is provided, and may separate the circulation space 22 from the external space. In this case, the floor of the space may be a coated floor coated with an antistatic floor material or the like to ensure airtightness. In this case, the device in the hood 21A1 may not have an individual cover, shutter, or the like as appropriate.

Further, in this embodiment, the take-out unit 23 is provided with two take-out devices 50 provided with a reversing mechanism 51. One take-out device 50b is provided with a cleaning mechanism 54. The configuration of the take-out unit 23 is not limited to such a form. For example, the take-out unit 23 may be provided with one take-out device 50 provided with a reversing mechanism 51 and a cleaning mechanism 54. In this case, the firing container A is inverted once by the inversion mechanism 51. Next, after cleaning (for example, brushing) the firing container A with the cleaning mechanism 54, the firing container A is inverted. In this way, the firing container A may be inverted in two steps with one extraction device 50. In this case, one take-out device 50 may be used when one baking container A is inverted and the baked product is taken out.

Further, in this embodiment, of the circulation lines 20, the take-out unit 23 and the supply unit 24 are provided in one linear transport unit 41. A plurality of take-out units 23 and a plurality of supply units 24 may be arranged on the circulation line 20, and a plurality of firing containers A may be configured to be processed at the same time. Further, the circulation line 20 may include a transport path provided in parallel in a plurality of rows.

Further, in this embodiment, the take-out unit 23 and the supply unit 24 are each provided in the linear transport unit 41 of the circulation line 20. The position where the take-out unit 23 and the supply unit 24 are provided is not limited to such a portion. The take-out unit 23 may be provided, for example, in the first connection portion 42 of the circulation line 20, for example, the cross-linking portion 42b. The supply unit 24 may be provided, for example, in the second connecting portion 43 of the circulation line 20, for example, the cross-linking portion 43b. As described above, the arrangement of the take-out unit 23 and the supply unit 24 in the circulation line 20 is not limited to the above-described embodiment.

Although the detailed description has been given with reference to specific embodiments, these are merely examples and do not limit the scope of the claims. Further, the disclosure here can be variously modified, and each component and each process referred to here may be appropriately omitted or appropriately combined as long as no particular problem arises.

1 Continuous firing system 10 Continuous firing furnace 11 Carry-in port 11a Hood 12 Carry-out port 12a Hood 13 Furnace 13a Transport space 20, 20A Circulation lines 21 and 21A Hood 21A1 Lifter 101, 102 and hood 22 where the take-out unit 23 is provided. Circulation space 23 Extraction unit 23a, 24a Processing space 24 Supply unit 31 First replacement chamber 32 Second replacement chamber 33 Third replacement chamber 34 Fourth replacement chamber 35 Fifth replacement chamber 31a to 35a, 31b to 35b Shutter 41 Straight transfer unit 42 1st connection part 42a 1st extension part 42b Bridge part 42b1, 42b2 Branch part 43 2nd connection part 43a 2nd extension part 43b Bridge part 43b1,43b2 Branch part 50a, 50b Extraction device 51 Reversing mechanism 51a, 51b Rotation Plates 51a1, 51b1 Rotating shaft 51b2 Bearing 51c Rotary actuator 51d Clamp member 51d1 Clamp 51d2 Connecting part 51d3 Spring 51d4 Recess 51e Unclamping mechanism 51e1 Cylinder 51e2 Operating shaft 51f Roller 51g Stopper 51g1 Rotating shaft 51g2 Stopper piece 51g3 Pusher 51g4 Mechanism 51h Support shaft 52 Collection part 52a Collection pipe 52b Collection pipe 52c Collection container 53 First cover 54 Cleaning mechanism 55 Shutter 60 Supply device 61 Hopper 62 Feeder 63 Second cover 70a, 70b Lid removal mechanism 71 Third cover 81 to 84 External branch lines 91 to 94 Replacement chambers 91a to 94a, 91b to 94b Shutter 100 Control device 101, 102 Lifter A Firing container A1 Conveyance direction

Claims (20)

With a continuous firing furnace,
A circulation line for circulating a firing container is provided for the continuous firing furnace.
The continuous firing furnace is
It has a tunnel-type furnace body that forms a transport space for transporting the firing container from the carry-in inlet to the carry-out port.
The circulation line is
A hood outside the continuous firing furnace that separates the circulation space from the carry-out port to the carry-in port of the continuous firing furnace from the external space.
An extraction unit that takes out the fired product from the fired container,
In the circulation line, a supply unit provided on the carry-in port side of the continuous firing furnace with respect to the take-out unit to supply an unfired object to the firing container, and a supply unit.
It is provided with a fourth replacement chamber provided between the take-out unit and the supply unit.
The take-out unit and the supply unit are each connected to the circulation space surrounded by the hood, but have a processing space separated from the external space.
Continuous firing system. The continuous firing system according to claim 1, wherein the circulation line is provided with a first replacement chamber at one end of the furnace body on the carry-in port side. The continuous firing system according to claim 1 or 2, wherein the circulation line is provided with a second replacement chamber at one end of the furnace body on the carry-out port side. The circulation line is
The continuous firing system according to any one of claims 1 to 3, comprising at least one replacement chamber. The circulation line is
The continuous firing system according to any one of claims 1 to 4, wherein a third replacement chamber is provided on the upstream side of the extraction unit. The circulation line is
The continuous firing system according to any one of claims 1 to 5, wherein a fifth replacement chamber is provided on the downstream side of the supply unit. The take-out unit is
An inversion mechanism that inverts the firing container upside down,
A collection unit that collects the contents of the firing container below the position where the firing container is inverted.
Includes at least one take-out device with a first cover that shields the space from which the firing container is inverted from the outside.
The continuous firing system according to any one of claims 1 to 6, wherein the space surrounded by the first cover is continuous with the space surrounded by the hood of the circulation line. The circulation line is
A roller conveyor in which rollers for transporting the firing container are arranged is provided.
The reversing mechanism is a mechanism for reversing the firing container up and down together with the rollers of the circulation line.
The collecting unit is provided with a mortar-shaped collecting tube below the reversing mechanism.
The continuous firing system according to claim 7 . With a continuous firing furnace,
A circulation line for circulating a firing container is provided for the continuous firing furnace.
The continuous firing furnace is
It has a tunnel-type furnace body that forms a transport space for transporting the firing container from the carry-in inlet to the carry-out port.
The circulation line is
A roller conveyor in which rollers for transporting the firing container are arranged, and a roller conveyor.
Outside the continuous firing furnace, a hood that separates the circulation space from the carry-out port to the carry-in port of the continuous firing furnace from the external space, and a take-out unit that takes out the fired product from the firing container.
The circulation line has a supply unit provided on the carry-in port side of the continuous firing furnace with respect to the take-out unit to supply an unfired object to the firing container.
The take-out unit is
An inversion mechanism that inverts the firing container upside down,
A collection unit that collects the contents of the firing container below the position where the firing container is inverted.
Includes at least one take-out device with a first cover that shields the space from which the firing container is inverted from the outside.
The space surrounded by the first cover is continuous with the space surrounded by the hood of the circulation line.
The reversing mechanism is a mechanism for reversing the firing container up and down together with the roller.
The collecting unit is provided with a mortar-shaped collecting tube below the reversing mechanism.
Continuous firing system. The take-out device is
The continuous firing system according to any one of claims 7 to 9, further comprising a cleaning mechanism for cleaning the firing container. The take-out unit is
The first take-out device, which does not have a cleaning mechanism,
The continuous firing system according to claim 10, further comprising a second take-out device provided with a cleaning mechanism. The take-out device is
The continuous firing system according to any one of claims 7 to 11, further comprising a shutter that separates the space surrounded by the first cover and the space surrounded by the hood of the circulation line. The take-out unit is
A first lid removing mechanism for removing the lid from the firing container is provided.
The continuous firing system according to any one of claims 7 to 12. The supply unit is
A hopper that houses the object to be fired and
A feeder that supplies the object to be fired from the hopper to the firing container,
The firing container is provided with a second cover that shields the space from which the object to be fired is supplied from the external space.
The space surrounded by the second cover is continuous with the space surrounded by the hood of the circulation line.
The continuous firing system according to any one of claims 1 to 13. The supply unit is
A second lid removing mechanism for removing the lid from the firing container is provided.
The continuous firing system according to claim 14. The lid removing mechanism includes a third cover that shields the space from which the lid is removed from the firing container from the external space.
The space surrounded by the third cover is continuous with the space surrounded by the hood of the circulation line.
The continuous firing system according to claim 13 or 15. The circulation line is
It comprises at least one external branch line that is at least partially branched from the circulation line and extends out of the circulation space.
The continuous firing system according to any one of claims 1 to 16. The continuous firing system according to claim 17, wherein the external branch line is provided with a replacement chamber at an end where the circulation line joins. The transport path of the continuous firing furnace is set along a straight line.
The circulation line is
A straight line transport section along a straight line parallel to the transport path of the continuous firing furnace,
A first connection portion that is continuous with the carry-out port side of the continuous firing furnace and connects the transport path of the continuous firing furnace and the linear transport portion.
It has a second connection portion that is continuous with the carry-in inlet side of the continuous firing furnace and connects the transport path of the continuous firing furnace and the linear transport portion.
The continuous firing system according to any one of claims 1 to 18. The take-out unit and the supply unit are provided in the linear transport unit.
The continuous firing system according to claim 19.

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