CN210463984U - High-temperature tunnel type electric heating kiln - Google Patents
High-temperature tunnel type electric heating kiln Download PDFInfo
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- CN210463984U CN210463984U CN201920887587.0U CN201920887587U CN210463984U CN 210463984 U CN210463984 U CN 210463984U CN 201920887587 U CN201920887587 U CN 201920887587U CN 210463984 U CN210463984 U CN 210463984U
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Abstract
The utility model discloses a high-temperature tunnel type electric heating kiln, which comprises a kiln body, a circulating track and a kiln car, wherein the kiln body is sequentially divided into a glue discharging section, a temperature rising section, a heat preservation section and a temperature reduction cooling section from an inlet to an outlet; the kiln car comprises a chassis, wherein a light-weight high aluminum layer, a mullite layer, alumina bubble bricks and a corundum mullite layer are sequentially arranged on the chassis, supporting bricks are arranged on the corundum mullite layer at intervals, and a burning bearing plate for placing a product to be burnt is arranged on the supporting bricks; the circulating track is provided with rollers, a chassis of the kiln car is arranged on the circulating track, and the circulating track is provided with a propeller for pushing the kiln car to move on the rollers along the track. The utility model discloses the binder removal and the integrative completion of sintering of mainly used pottery unburned bricks, output is big, sintering temperature is high, and product quality is stable, and energy consumption is lower.
Description
Technical Field
The utility model relates to a ceramic substrate production technical field, concretely relates to high temperature tunnel type electric heat kiln.
Background
The tunnel kiln is a kiln similar to a tunnel and built by refractory materials, heat insulation materials and building materials, is a modern continuous-type firing thermal device, and is widely used for the roasting production of ceramic products at present. Present tunnel cave is mostly pushed bat kiln, and traditional pushed bat kiln mainly has two problems at present: 1. the productivity is small, and the push plate of the traditional push plate kiln not only needs to bear the weight of a product and a burning bearing plate under the high-temperature condition, but also needs to bear the huge pressure of a propeller in the advancing direction, so the size of the push plate is limited, and the productivity is small. The traditional electric heating push plate type tunnel kiln with the temperature of more than 1500 ℃ is mainly designed for being suitable for ceramic materials with the temperature of less than 4 inches by 5 inches, and can not meet the sintering requirement of large-size ceramic materials. In order to meet the sintering requirement of large-size ceramic materials and improve the subsequent ceramic material sintering efficiency, the structure and the propulsion mode of a kiln are required to be innovated. 2. The phenomenon of kiln blocking or kiln arching is easy to occur. 3. The push plate is shortened in the length direction and widened in the width direction after being used for a plurality of cycles. The left and right directions of the push plate cannot smoothly pass through the hearth after the push plate is widened, so that kiln blockage is caused. After long-term use, the slide way brick and the push plate are greatly abraded, and the push plate is easy to break. Seriously threatens the safety of the kiln. 4. The push plate resistant to high temperature and high pressure is imported, the price is high, and the delivery period often needs half a year.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a tunnel type electric heat kiln that is used for binder removal and sintering integration processing of ceramic unburned bricks.
In order to solve the technical problem, the utility model adopts the following technical scheme:
designing a high-temperature tunnel type electric heating kiln which comprises a kiln body, a circulating track and a kiln car, wherein the kiln body is sequentially divided into a glue discharging section, a temperature rising section, a heat preservation section and a temperature reduction cooling section from an inlet to an outlet; the circulating track comprises an inner track part penetrating through two ends of the kiln body and an outer track part positioned outside the kiln body, and two ends of the inner track part and two ends of the outer track part are correspondingly connected to form a circulating track in a rotary form;
the kiln car comprises a chassis, wherein a light-weight high aluminum layer, a mullite layer, alumina bubble bricks and a corundum mullite layer are sequentially arranged on the chassis, supporting bricks are arranged on the corundum mullite layer at intervals, and a burning bearing plate for placing a product to be burnt is arranged on the supporting bricks;
the circulating track is provided with idler wheels, a chassis of the kiln car is installed on the circulating track, and the circulating track is provided with a propeller for pushing the kiln car to move on the idler wheels along the track.
In the technical scheme, the kiln car circularly and rotationally moves on the circulating track, the kiln car bears ceramic green body products to be sintered, the ceramic green body products enter from the feed inlet of the kiln body, glue discharging and sintering are completed in the kiln body, after the ceramic green body products come out from the discharge outlet of the kiln body, charging and discharging are completed on the outer track part positioned outside the kiln body, a plurality of kiln cars can be adopted to circularly work, and efficient and continuous production is realized.
Preferably, a plurality of groups of air inlets and air outlets are arranged at the top of the hearth of the glue discharging section; the top of the rear hearth of the cooling section is provided with a plurality of groups of exhaust ports, and the bottom of the cooling section is provided with a plurality of groups of air inlets. And the air inlet and the air exhaust in the furnace body are realized through the air inlet and the air outlet, so that the balance of the gas pressure of the hearth is kept and the cooling speed is adjusted.
Preferably, the glue discharging section is heated by a resistance wire; the front part of the temperature rising section, which is close to the glue discharging section, is heated by resistance wires, and the rear part of the temperature rising section is heated by hanging U-shaped silicon-molybdenum rods on two sides of the hearth; the heat preservation section adopts U-shaped silicon-molybdenum bars to be hung and heated on two sides of the hearth. Heating elements in the same temperature zone in the hearth are uniformly arranged, and each temperature zone is provided with a beam-separating brick, so that the temperature of each zone is well controlled.
Preferably, a heating zone is arranged at the front part of the cooling section, which is close to the heat preservation section, and the heating zone adopts U-shaped silicon-molybdenum rods to heat the two sides of the hearth in a hanging manner, so that the process is flexibly adjusted, and the heat preservation time is prolonged.
Preferably, the silicon-molybdenum rod is installed in a two-section plug-in mounting mode, so that the heating element can be rapidly replaced conveniently. And the silicon-molybdenum rods are alternately arranged in two specifications, wherein the heating section of the silicon-molybdenum rod in one specification is shorter than that in the other specification, and the heating section is lower than that in the other specification. Because high-temperature gas can go upwards, especially in a high-temperature area, the upper and lower temperature difference in a hearth can be larger when the silicon-molybdenum rods with the same specification are independently used, so that the silicon-molybdenum rods which are shorter and lower in another heating section are alternately arranged, the lower part of the kiln can be subjected to a temperature compensation effect, and the temperature difference is reduced.
Preferably, each air inlet and each air outlet are provided with a regulating valve, and air inlet and air exhaust can be controlled by adopting a variable frequency motor.
Preferably, a plurality of temperature measuring points are arranged on the cooling section. The opening degree of the air inlet and the exhaust chimney valve can be adjusted according to the measured temperature condition of the hearth, and the reasonable cooling speed is kept.
Preferably, the cross section of the inner space of the kiln body is in a convex shape; the mullite layers on the kiln car are two layers, and the light alumina layer and the mullite layer positioned at the lower layer have the same width as the chassis; the widths of the mullite layer positioned on the upper layer and the alumina bubble brick and the corundum mullite layer on the mullite layer are smaller than the width of the chassis, so that the cross section of the kiln car is in a convex shape which is adaptive to the cross section of the internal space of the kiln body. The kiln body is internally provided with a convex structure, the upper surface is narrow, the lower surface is wide, and the kiln car is also designed in a convex shape, so that high-temperature flame can be effectively isolated in the running process of the kiln car, the heat preservation is facilitated, and the accident is avoided.
The utility model discloses high temperature tunnel type electric heat kiln's beneficial effect lies in:
1. the high-temperature tunnel type electric heating kiln adopts the rotary circulation track, so that the kiln car circularly moves along the track, the glue discharging and sintering of ceramic green bodies are integrally completed in the kiln body, and the online loading and unloading are realized outside the kiln body, thereby being beneficial to realizing the continuous production and effectively improving the production efficiency; and be convenient for realize automated control, improve degree of automation height, can reduce manual work's intensity by a wide margin, use manpower sparingly.
2. Traditional pushed slab kiln receives the restriction because of its self operation, pushed slab size, therefore the kiln chamber is little, and the pushed slab is also corresponding little, and the kiln length that the pushed slab size is little again decided is less, and traditional pushed slab kiln is no longer than 25 meters. The utility model provides a kiln chamber size and length do not receive the restriction of push pedal size, and the furnace size increases, and kiln body length increases, and the space is big, the productivity is high, can increase of production by a wide margin.
3. The utility model discloses high temperature tunnel formula electric heat kiln adopts the kiln car to replace traditional push pedal, and the running resistance is little, to the injury greatly reduced of metal gyro wheel, can avoid the card kiln that the push pedal kiln produced in the use, push pedal fracture or corner take place whole push away the problem that the slope collapsed even easily, effectively avoid the card kiln, encircle the emergence of kiln accident.
4. The utility model discloses the binder removal and the integrative completion of sintering of mainly used pottery unburned bricks, output is big, sintering temperature is high, and product quality is stable, and energy consumption is lower.
Drawings
FIG. 1 is a schematic view of the external structure of the high-temperature tunnel-type electric heating kiln of the present invention;
FIG. 2 is a schematic structural view of a circulating track and a kiln car;
FIG. 3 is a schematic cross-sectional view of a kiln body;
FIG. 4 is a schematic diagram of the arrangement of two types of Si-Mo rods;
reference numbers in the figures: 1 is a circulating track, 2 is a kiln body, 3 is a light-weight high aluminum layer, 4 is a mullite layer, 5 is an alumina hollow ball brick, 6 is a corundum mullite layer, 7 is a supporting brick, 8 is a burning bearing plate, 9 is a kiln car, 10 is a chassis, 11 is a roller, 12 is a silicon-molybdenum rod of one specification, 13 is a silicon-molybdenum rod of another specification, and 14 is a convex space in the kiln body.
Detailed Description
The following examples are provided only for illustrating the embodiments of the present invention in detail and are not intended to limit the scope of the present invention in any way.
Example 1: a high-temperature tunnel type electric heating kiln is shown in figures 1-4 and comprises a kiln body 2, a circulating track 1 and a kiln car 9.
The kiln body 2 is sequentially divided into a glue discharging section, a temperature rising section, a heat preservation section and a temperature reduction cooling section from an inlet to an outlet; the circulating track 1 comprises an inner track part passing through two ends of the kiln body 2 and an outer track part positioned outside the kiln body, and two ends of the inner track part and two ends of the outer track part are correspondingly connected to form the circulating track 1 in a rotary mode. A plurality of groups of air inlets and air outlets are arranged at the top of the hearth of the glue discharging section; the top of the rear hearth of the cooling section is provided with a plurality of groups of exhaust ports, and the bottom of the cooling section is provided with a plurality of groups of air inlets. Regulating valves are arranged at the air inlets and the air outlets.
In the embodiment, a plurality of groups of variable frequency adjusting air inlet and outlet ports are arranged at the top of the glue discharging section hearth; and a plurality of groups of adjustable exhaust ports are arranged at the top of the hearth at the rear part of the cooling section. And a plurality of groups of adjustable air inlets are arranged at the bottoms of the two sides of the hearth of the cooling section and used for supplementing air to the hearth, keeping the balance of the gas pressure of the hearth and adjusting the cooling speed.
The glue discharging section is heated by a resistance wire; the front part of the temperature rising section close to the glue discharging section is heated by resistance wires, and the rear part of the temperature rising section is heated by hanging U-shaped silicon-molybdenum rods on two sides of the hearth; the heat preservation section adopts U-shaped silicon-molybdenum bars to be hung and heated on two sides of the hearth. The part of the front part of the cooling section, which is close to the heat preservation section, is provided with a heating zone, and the heating zone adopts U-shaped silicon-molybdenum bars to be hung and heated on two sides of the hearth. Heating elements in the same temperature zone in the hearth are uniformly arranged, and each temperature zone is provided with a beam-separating brick, so that the temperature of each zone is well controlled. The silicon-molybdenum rod is mounted in a two-section plug-in mounting mode, so that the heating element can be quickly replaced conveniently; and the silicon-molybdenum rods are alternately arranged in two specifications, wherein the heating section of the silicon-molybdenum rod in one specification is shorter than that in the other specification, and the heating section is lower than that in the other specification, as shown in figure 4. Because high-temperature gas can go upwards, especially in a high-temperature area, the upper and lower temperature difference in the hearth can be larger due to the single use of the silicon-molybdenum rods with one specification, so that the silicon-molybdenum rods with the other heating sections which are alternately arranged and shorter and the heating positions which are lower can play a role in temperature compensation on the lower part of the kiln, and the temperature difference is reduced. A plurality of temperature measuring points are arranged on the cooling section, so that the opening degree of the air inlet and the opening degree of the exhaust chimney valve can be adjusted according to the measured temperature condition of the hearth, and the reasonable cooling speed is kept.
The kiln car 9 comprises a chassis 10, a light-weight high aluminum layer 3, a mullite layer 4, alumina bubble bricks 5 and a corundum mullite layer 6 are sequentially arranged on the chassis 10, supporting bricks 7 are arranged on the corundum mullite layer 6 at intervals, and burning bearing plates 8 for placing products to be burned are arranged on the supporting bricks 7; the circulating track 1 is provided with rollers, a chassis 10 of the kiln car 9 is arranged on the circulating track 1, the circulating track 1 is provided with a propeller for pushing the kiln car 9 to move on the rollers along the track, and the propeller is hydraulically and automatically propelled.
The cross section of the inner space of the kiln body 2 is in a convex shape; the mullite layer 4 on the kiln car is two layers, and the widths of the light-weight high aluminum layer 3 and the mullite layer positioned at the lower layer are equal to the width of the chassis; the widths of the mullite layer positioned on the upper layer and the alumina bubble brick 5 and the corundum mullite layer 6 on the mullite layer are smaller than that of the chassis 10, so that the cross section of the kiln car is in a convex shape which is adaptive to the cross section of the inner space of the kiln body 2. The kiln body is internally provided with a convex structure, the upper surface is narrow, the lower surface is wide, and the kiln car is also designed in a convex shape, so that high-temperature flame can be effectively isolated in the running process of the kiln car, the heat preservation is facilitated, and the accident is avoided.
The utility model discloses high temperature tunnel type electric heat kiln's concrete working method does: placing the ceramic green bodies to be sintered on a firing bearing plate at the top of a kiln car (charging), moving the kiln car into a kiln body along a circulating track, performing row gluing and sintering in the kiln body, discharging the kiln car from a discharge port of the kiln body on an outer track part, then charging and sintering again, and circulating the steps so as to realize continuous production.
The embodiments of the present invention have been described in detail with reference to the drawings and examples, but the present invention is not limited to the above embodiments, and can be modified or changed within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (7)
1. A high-temperature tunnel type electric heating kiln is characterized by comprising a kiln body, a circulating track and a kiln car,
the kiln body is sequentially divided into a glue discharging section, a temperature rising section, a heat preservation section and a temperature reduction cooling section from an inlet to an outlet; the circulating track comprises an inner track part penetrating through two ends of the kiln body and an outer track part positioned outside the kiln body, and two ends of the inner track part and two ends of the outer track part are correspondingly connected to form a circulating track in a rotary form;
the kiln car comprises a chassis, wherein a light-weight high aluminum layer, a mullite layer, alumina bubble bricks and a corundum mullite layer are sequentially arranged on the chassis, supporting bricks are arranged on the corundum mullite layer at intervals, and a burning bearing plate for placing a product to be burnt is arranged on the supporting bricks;
the circulating track is provided with idler wheels, a chassis of the kiln car is installed on the circulating track, and the circulating track is provided with a propeller for pushing the kiln car to move on the idler wheels along the track.
2. The high-temperature tunnel type electric heating kiln as claimed in claim 1, wherein a plurality of groups of air inlets and air outlets are arranged at the top of the hearth of the glue discharging section; the top of the rear hearth of the cooling section is provided with a plurality of groups of exhaust ports, and the bottom of the cooling section is provided with a plurality of groups of air inlets.
3. The high-temperature tunnel-type electric heating kiln as claimed in claim 2, wherein the glue discharging section is heated by resistance wires; the front part of the temperature rising section, which is close to the glue discharging section, is heated by resistance wires, and the rear part of the temperature rising section is heated by hanging U-shaped silicon-molybdenum rods on two sides of the hearth; the heat preservation section adopts U-shaped silicon-molybdenum bars to be hung and heated on two sides of the hearth.
4. The high-temperature tunnel type electrothermal kiln furnace of claim 3, wherein a heating zone is arranged at the front part of the cooling zone close to the holding zone, and the heating zone is heated by hanging U-shaped silicon-molybdenum bars at two sides of the hearth.
5. The high-temperature tunnel type electrothermal kiln of claim 3 or 4, wherein the silicon-molybdenum rod is installed in a two-stage plug-in mounting manner; and the silicon-molybdenum rods are alternately arranged in two specifications, wherein the heating section of the silicon-molybdenum rod in one specification is shorter than that in the other specification, and the heating section is lower than that in the other specification.
6. The high temperature tunnel-type electrothermal kiln of claim 2, wherein regulating valves are provided at each of the air inlet and the air outlet; and a plurality of temperature measuring points are arranged on the cooling section.
7. The high-temperature tunnel type electric heating kiln as claimed in claim 2, wherein the cross section of the inner space of the kiln body is in a shape like a Chinese character 'tu'; the mullite layers on the kiln car are two layers, and the light alumina layer and the mullite layer positioned at the lower layer have the same width as the chassis; the widths of the mullite layer positioned on the upper layer and the alumina bubble brick and the corundum mullite layer on the mullite layer are smaller than the width of the chassis, so that the cross section of the kiln car is in a convex shape which is adaptive to the cross section of the internal space of the kiln body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920887587.0U CN210463984U (en) | 2019-06-13 | 2019-06-13 | High-temperature tunnel type electric heating kiln |
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| CN201920887587.0U CN210463984U (en) | 2019-06-13 | 2019-06-13 | High-temperature tunnel type electric heating kiln |
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| CN210463984U true CN210463984U (en) | 2020-05-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112179129A (en) * | 2020-09-28 | 2021-01-05 | 江西永兴特钢新能源科技有限公司 | Novel tunnel kiln roasting lepidolite for preparing lithium carbonate |
| CN114294949A (en) * | 2021-12-10 | 2022-04-08 | 佛山市天禄智能装备科技有限公司 | Intelligent control method of roller kiln, computer equipment and readable storage medium |
-
2019
- 2019-06-13 CN CN201920887587.0U patent/CN210463984U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112179129A (en) * | 2020-09-28 | 2021-01-05 | 江西永兴特钢新能源科技有限公司 | Novel tunnel kiln roasting lepidolite for preparing lithium carbonate |
| CN114294949A (en) * | 2021-12-10 | 2022-04-08 | 佛山市天禄智能装备科技有限公司 | Intelligent control method of roller kiln, computer equipment and readable storage medium |
| CN114294949B (en) * | 2021-12-10 | 2024-03-08 | 佛山市天禄智能装备科技有限公司 | Intelligent control method for roller kiln, computer equipment and readable storage medium |
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