JPS608435B2 - Continuous firing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sintering apparatus capable of continuously sintering objects to be sintered at high speed.

Conventionally, a "continuous tunnel furnace" has a "continuous tunnel furnace," as shown in FIG. The furnace body 4 was moved within the furnace 5 by pushing, and the object to be fired was fired during the movement process.

According to this type of furnace, the plywood 1 must be made of a material with high mechanical strength so that it can withstand the pressure from the pusher 3, and for this reason, the plywood 1 must necessarily have a large heat capacity. Become. Therefore, the amount of heat required to heat the plywood 1 is larger than the heat capacity required to heat the object to be fired, resulting in extremely large heat loss. Many of them are made of materials that are weak against heat, making it impossible to fire objects that require rapid heating and cooling.Furthermore, ``When firing objects using conventional tunnel furnaces, plywood 1
Since it is sent intermittently, completely continuous firing cannot be achieved, and the firing temperature gradient is also gradual due to the disadvantages of the plywood furnace mentioned above, which results in an increase in the length of the tunnel furnace. This also leads to an increase in baking time. On the other hand, due to the recent significant increase in energy costs and the demand for shortening the firing processing time of objects to be fired, there has been a demand for a new type of furnace that can replace the conventional tunnel furnace. Therefore, the present invention has been proposed to solve the above-mentioned problems, and provides a continuous firing apparatus that can perform firing at high speed.

Further, the present invention provides a continuous firing apparatus capable of continuously firing objects to be fired. Furthermore, the present invention provides a continuous firing device that can save energy.

In other words, the gist of the present invention is to provide a means for moving the trolley on which the object to be fired is placed, a means for moving the trolleys that are connected in a loop shape, and a means for moving the trolleys in a loop shape. If the firing furnace, which passes the truck through the furnace and fires the object to be fired placed on the truck, is damaged in a part of the loop-shaped running path along which the truck moves. Further, the other part of the loop-shaped running path along which the cart moves is a position where objects to be fired are loaded onto or unloaded from the cart.

2 is a schematic plan view showing an embodiment of a continuous firing apparatus according to the present invention; FIG. The figure is an enlarged side view showing the trolley and moving means in the continuous firing device.

In the figure, the running path is in the form of a loop, and has a running surface 2 in the form of a horizontal plane. Although only a portion is shown, a configuration in which the bogie 13 is arranged over the entire surface of the traveling path 1 is being explored.
The number of carts 13 can be arbitrarily selected. The number of carts 13 can be selected as desired. As shown in an enlarged view in FIG. It has two (2) wheels, which do not have a driving source per se, but can be moved by being pulled.Also, as a constituent material, it is made of a material with low heat capacity and excellent thermal shock resistance. Furthermore, the wheels 14 are each independent, and are rotatably supported by a shaft 15 about an axis perpendicular to the plane of rotation so that the direction of rotation of the wheels 14 is 360 degrees. Yes. Trolley 13
A body to be fired (not shown) is placed on top of the body, and is normally housed in the body 16.

The material for thickness 16 may be any material that can withstand the firing heat, but
In order to enable high-speed firing, it is convenient to use a material with a small heat capacity and excellent thermal shock resistance, such as ceramic wool material. , are connected by a chain colored connecting member tortoise 8 which is a moving means.

Chain turtle 7 has one loop-shaped running path and a parallel running path g adjacent to it. Chain turtle? It plays the role of moving the connected trolley army 3 as it moves. Therefore, the movement of the T-chain army 7 causes the trolley turtle 3 to move on the loop-shaped traveling path Kametomi. In reality, it is impossible to move the chain 7 itself, so a driving means is used to move it. According to the illustrated driving means, the motor 28 also includes a chain 21t and a driving gear 22.

The rotation of the motor 28 is also transmitted to the gear 22 via the chain 21 to encourage the rotation of the gear 22. gear dew 2
The chain 1 has a convex portion extending along the circumferential direction on its outer circumferential surface, and also has a concave portion 24 that engages with the convex portion 23. , thereby prompting the trolley turtle 3 connected to the chain turtle 7 to move.
In a part of the loop-shaped running road guard i on which the bogie electric car S moves, two firing furnaces were located covering the loop-shaped running road turtle, and 11 loop-shaped running road pits were placed. The truck group 3 passes through the furnace interior 26 of the firing furnace 25. Inside the furnace 2 of the firing furnace 28
6' A resistance heating body 27 is disposed, and is disposed above the object to be fired on the cart 13 located in the furnace 26. While passing through the furnace interior 26 of the firing furnace 25,
The resistance heating body is heated through the bonito holes to perform the firing process on the object to be fired. Since the Sun Cheng Furnace is generally constructed in a straight line,
This firing furnace 2 is usually arranged so as to be located in a part of the loop-shaped running path 11 that is partially straight. On the other hand, "In the middle of the loop-shaped travel path li, except for the location where the above-mentioned firing furnace 26 is located, work is carried out to load objects to be fired onto a trolley, or to remove the fired objects from the trolley. This will be the predetermined position to lower it.

In addition to the embodiments described above, the chain serving as the moving means may be an endless belt.

In addition to the above-mentioned combination of motor and chain L gears, other drive means may be used as long as the drive means can drive the moving means. According to such a configuration example, the cart on which the object to be fired can be continuously passed through the firing furnace, and the object to be fired can be fired at high speed.

In addition, since it is moved using a trolley, there is no need to use plywood, which has strong mechanical strength to withstand the pressure from the pusher, as in the past. This reduces the amount of heat required to sinter the object to be sintered, thereby promoting energy saving. For the conventional example, the amount of heat radiated from the trolley (corresponding to the plywood turtle for the subordinate example) is 171, respectively.
Shoe cal/hour/force 4: 325 arc cal/hour 8th ~ It can be reduced to 1.2 compared to the conventional example.

In addition, the amount of heat stored in each trolley is 338 cal/shoes.
This is 37,867 Kcal, which can be reduced by 1 to 11 compared to the conventional method.Therefore, a considerable amount of thermal energy is required to heat the plywood in addition to firing the object to be fired. However, from the above, the amount of thermal energy can be reduced and energy saving can be achieved.Furthermore, according to the continuous firing apparatus according to the present invention, when the combustion temperature is set to 140,000, the temperature increase per hour is reduced. Temperature, cooling temperature, 800o
o/hour, compared to the conventional example (200
The firing time can be increased four times compared to the conventional method (°C/hour). BRIEF DESCRIPTION OF THE DRAWINGS FIG. J is a schematic side sectional view of a continuous tunnel furnace according to a subordinate example, FIG. 2 is a schematic plan view showing an embodiment of a continuous firing apparatus according to the present invention, and FIG. Similarly, FIG. 4 is a partially schematic side view, and FIG. 4 is an enlarged side view extracting and showing the cart and moving means in the continuous firing apparatus.

1. Loop-shaped running path, 13.. Dolly, 16.. Formation, wing 7.. Chain, 20.. Motor, 21.. Chain, 22.. Drive gear, 25..・Firing furnace
26... Inside the furnace 27... Resistance heating element.

Blind 1 Atsushi and figure Figure 3 Strategy 4

Claims (1)

[Claims] 1. A cart on which an object to be fired is placed, a moving means for moving the carts that move in a loop shape and are connected as they move, and a drive for moving the moving means in a loop shape. A firing furnace is located in a part of the loop-shaped traveling path along which the truck moves, and the firing furnace passes the truck through the furnace and fires the object to be fired placed on the truck. A continuous firing device in which the other part of the moving loop-shaped traveling path is a position where objects to be fired are loaded onto or unloaded from the trolley. 2. The continuous firing apparatus according to claim 1, wherein the movement mode of the moving means is a planar loop shape. 3. The continuous firing apparatus according to claim 1, wherein the moving means is an endless chain. 4 Claim 1 in which the moving means is an endless belt
Continuous firing equipment. 5. The continuous firing apparatus according to claim 1, wherein the firing furnace is an electric furnace. 6. The continuous firing apparatus according to claim 1, wherein the firing furnace is an electric furnace, and the heating body is located above the object to be fired. 7. The continuous firing apparatus according to claim 1, wherein the firing furnace is located on a straight portion of the loop-shaped running path.