JPH0127036Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is applicable to a bogie furnace used as a heating furnace or a heat treatment furnace, especially when the size of the object to be heated is shorter than the furnace length and when processing small quantities. This invention relates to a bogie furnace that can be adjusted to an appropriate internal volume at will.

[Conventional technology]

A conventional bogie furnace is equipped with a furnace main body having an opening/closing door at the charging port, and a cart for charging and extracting the object to be heated through the charging port of the furnace main body.After charging the object to be heated into the furnace body together with the cart, The door was closed and the burner installed inside the furnace was ignited to perform heating or heat treatment, but when the amount of material to be charged to be heated changes, especially when the amount of material to be processed changes relative to the volume inside the furnace. When it was low, it became extremely inefficient. For this reason, in the past, partition walls were built inside the furnace depending on the amount of material to be processed to ensure the optimal volume inside the furnace, but these partition walls had to be removed when the amount of material to be processed increased. This was not only wasteful, but also caused problems such as poor work efficiency and equipment costs.

[Purpose of the invention] In view of the above points, the purpose of this invention is to provide a bogie furnace in which the internal volume of the furnace can be freely changed according to the processing amount of the objects to be heated by changing the stop position of the cart on which the objects to be heated are loaded. It is said that

[Structure of the idea]

In order to achieve the above object, this invention provides a bogie furnace equipped with a furnace body having an opening/closing door at the front end and a truck which can be entered and exited from the front end of the furnace body. A rear wall structure is provided.

〔Example〕

Next, this invention will be explained based on embodiments shown in the accompanying drawings.

Reference numeral 1 denotes a furnace body with both ends open, and the front end 1a of the furnace body 1 has an opening/closing door 2, and the rear end 1b remains open. 3 is a burner provided on the inner wall of the furnace body 1.

Reference numeral 4 denotes a cart on which the object to be heated 5 is loaded, and the cart 4 runs on a rail 6 laid from the hearth of the furnace body 1 to the outside of the furnace by the operation of a drive device 7 installed outside the furnace. This is for charging the object to be heated 5 loaded outside the furnace into the furnace body 1 from its front end 1a, or for extracting the object to be heated outside the furnace after completion of the treatment inside the furnace.

Reference numeral 8 denotes a rear wall structure of the furnace main body 1 provided at the front end of the cart 4 in the charging direction (rear end side of the furnace main body), and the rear wall structure 8 moves together with the cart 4 to open the furnace main body The ribs 9a and 9b are provided at two locations on the rear end inner wall surface and the midpoint in the length direction of the furnace. It's getting old. When this rear wall structure 8 moves in the furnace together with the cart 4, there is a gap l between it and the ribs 9a and 9b of the furnace body 1.
However, when the gap l forms the rear wall of the furnace body 1, an appropriate seal is provided to prevent the leakage of gas in the furnace and the intrusion of outside air into the furnace. This sealing means can be satisfied by filling with a filler such as ceramic fiber, but it is also possible to apply a shielding plate.

In the above embodiment, ribs 9a, 9 are provided on the furnace body 1.
b is provided, and the furnace volume can be changed in two stages, but it is also possible to increase the rib installation position so that it can be changed in multiple stages, or to enable stepless adjustment without installing ribs. It's okay.

Next, the operation of this embodiment will be explained.

First, the object to be heated 5 is placed on the trolley 4 outside the furnace main body 1.
After being placed thereon, it is moved on the rails 6 by the drive device 7 and charged into the furnace body 1. In this case, when the object to be heated 5 is equal to the storage capacity of the furnace body 1, the cart 4 is inserted to the deepest position, and the rear wall structure 8 is attached to the rib 9a provided at the rear end 1b of the furnace body 1. The carriage 4 is then stopped and fixed using a stopper (not shown). Thereafter, the gap between the rear wall structure 8 and the furnace main body 1 formed on the outer periphery of the rear surface is sealed by an appropriate method, and the opening/closing door 2 is closed. Upon completion of the above preparatory work, the burner 3 in the furnace body 1 is ignited to undergo heat treatment. Upon completion of this process, the opening/closing door 2 is opened, the shielding plate 10 of the rear wall structure 8 is folded down, and the stopper is released to extract the heated material together with the trolley 4 out of the furnace, and one operation is completed. However, the same operation will be repeated.

Next, when the amount of material to be heated 5 to be processed at one time is small, the cart 2 is moved so that the rear wall structure 8 is connected to the rib 9 in the middle of the furnace wall.
By stopping the trolley at a position corresponding to b, fixing the trolley, sealing the gap, etc. as described above, the storage space for the heated object can be reduced.

[Effect of idea]

As described above, this invention provides a bogie furnace equipped with a furnace body having an opening/closing door at the front end and a truck that can be entered and exited from the front end of the furnace body. Since the furnace is characterized by having a body, the volume inside the furnace can be arbitrarily adjusted according to the amount of material to be heated by changing the loading amount of the cart, and the burner can be installed in unnecessary parts of the furnace body. The furnace can be operated while extinguishing the fire, saves a lot of fuel compared to conventional furnaces, and also simplifies equipment, among other excellent effects.

[Brief explanation of the drawing]

The figures show an embodiment of this invention, with FIG. 1 being a cross-sectional view in the case of a normal furnace internal volume, and FIG. 2 being a cross-sectional view in the case of a small throughput. 1...Furnace body, 2...Opening/closing door, 4...Dolly, 5
. . . Heated object, 8 . . . Rear wall structure.

Claims (1)

[Scope of utility model registration request] A bogie furnace comprising a furnace body having an opening/closing door at the front end, and a truck that can be entered and exited from the front end of the furnace body, characterized in that a rear wall structure of the furnace body is provided at the front end of the truck in the charging direction. Bogie furnace.