Foaming ceramic production line

Abstract

The utility model discloses a foamed ceramic production line, which belongs to the technical field of ceramic production, and comprises a drying section, a kiln, a heat preservation kiln and a loading and unloading system which are sequentially connected end to end, the drying section, the kiln, the heat preservation kiln and the loading and unloading system are connected to form a ring, a heat preservation cavity is arranged in the heat preservation kiln, and the loading and unloading system is arranged in the heat preservation cavity. A first roller way and a second roller way are arranged in the heat preservation cavity, the first roller way and the second roller way are arranged in a stacked mode, the loading and unloading system comprises a double-layer conveying roller table, a lifting roller table and a single-layer conveying roller table which are sequentially connected, the double-layer conveying roller table is connected with the heat preservation cavity, and the lifting roller table is connected with the single-layer conveying roller table. The ceramic fired by the kiln is transported by the first roller way and the second roller way in the heat preservation cavity in a layered mode, the slow cooling effect is achieved, the foaming ceramic plate is prevented from cracking in the transportation process, and meanwhile the overall length of the furnace body is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ceramic production, and particularly relates to a foamed ceramic production line. BACKGROUND

[0002] The foamed ceramic product is an inorganic ceramic material prepared through high-temperature firing and natural foaming, and the pores in the product are not connected and do not absorb water, and the pore diameter is in the millimeter level. With the rapid development of ceramic products, the market demand for the products is increasing. The existing kiln waste heat in the foamed ceramic production line cannot be effectively utilized, resulting in energy waste. The ceramic products are prone to cracking and breaking during the cooling process, which affects the yield of the products. The production cycle of the ceramic products is long, which restricts the production capacity of the foamed ceramic products. Therefore, there is a need for a ceramic production line with high production efficiency and high yield.

[0003] The patent application with the publication number CN106524752A discloses a double-layer roller kiln, which comprises a kiln body and an automatic feeding and discharging circulation system. The kiln body comprises a lower kiln body and an upper kiln body. The front end of the upper kiln body is provided with a feeding port, and the front end of the lower kiln body is provided with a discharging port. The rear end of the upper kiln body is aligned with the rear end of the lower kiln body. The automatic feeding and discharging circulation system comprises a feeding mechanism corresponding to the feeding port, a discharging mechanism corresponding to the discharging port, and a material transfer mechanism for transferring the material in the upper kiln body to the lower kiln body. Rollers are arranged in the upper kiln body and the lower kiln body. Along the advancing direction of the material, the kiln body is sequentially provided with a waste heat preheating section, a pre-drying section, a drying section, a temperature rising section, a sintering zone, and a cooling zone. The pre-drying section comprises a waste heat pre-drying section close to the waste heat preheating section and a heating pre-drying section away from the waste heat preheating section. An air extractor is arranged in the cooling zone, and the air outlet of the air extractor is in communication with the waste heat preheating section and the waste heat pre-drying section. The waste heat in the kiln is not fully utilized in the double-layer roller kiln, and the production efficiency of different sections in the kiln is not the same, which results in that the space of the kiln cannot be fully utilized. SUMMARY

[0004] The utility model aims at providing a foamed ceramic production line, which solves the problems of low thermal efficiency and low production efficiency of the existing ceramic production line.

[0005] To achieve the above-mentioned utility model purposes, the technical solutions adopted by the utility model are as follows:

[0006] The application discloses a foamed ceramic production line which comprises a drying section, a kiln, a heat preservation kiln and a loading and unloading system connected in sequence and in a ring shape, wherein the heat preservation kiln is internally provided with a heat preservation cavity, the heat preservation cavity is internally provided with a first roller way and a second roller way, the first roller way and the second roller way are arranged in a stacked mode, the loading and unloading system comprises a double-layer conveying roller table, a lifting roller table and a single-layer conveying roller table connected in sequence, the double-layer conveying roller table is connected with the heat preservation cavity, the ceramic fired in the kiln is transported in layers in the heat preservation cavity by the first roller way and the second roller way, thereby playing a slow cooling role, preventing the foamed ceramic plate from cracking in the transportation process and shortening the overall length of the furnace body.

[0007] Further, the loading and unloading system further comprises a conveying vehicle, a first mechanical arm, a height difference conveying vehicle, a plate unloading machine and a plate storage machine arranged in sequence, the conveying vehicle is connected with the single-layer conveying roller table, the first mechanical arm is arranged between the conveying vehicle and the height difference conveying vehicle, the plate storage machine is used for discharging and is used for conveying the foamed ceramic plate, and the foamed ceramic plate can be conveyed to different positions for transfer.

[0008] As preferred, the conveying vehicle is an AGV (Automatic Guided Vehicle), which is automatically navigated and has high operation efficiency.

[0009] Further, the loading and unloading system further comprises a paper laying machine, a second mechanical arm, a pneumatic aligning machine, a paper laying platform and a material distributing machine arranged in sequence, the paper laying machine is connected with the plate unloading machine, the material distributing machine is connected with the drying section, is used for processing the ceramic powder entering the kiln and realizes automatic feeding.

[0010] Further, the drying section comprises a single-layer drying roller way, one end of the single-layer drying roller way is connected with the loading and unloading system, the other end of the single-layer drying roller way is connected with the kiln, and the single-layer drying roller way is used for drying and preheating the foamed ceramic plate powder.

[0011] Further, the drying section further comprises a flue gas heat exchanger, one end of the flue gas heat exchanger is communicated with the single-layer drying roller way, the other end of the flue gas heat exchanger is communicated with the kiln, the flue gas waste heat of the kiln is utilized to preheat the ceramic powder, the heat utilization rate is improved, and energy consumption is reduced.

[0012] Preferably, the kiln is internally provided with a single-layer roller way, a lifting box and a double-layer roller way connected in sequence, the single-layer roller way is internally provided with a firing section and a rapid cooling section, the double-layer roller way is internally provided with a cooling section, the single-layer roller way is connected with the drying section, and the double-layer roller way is connected with the heat preservation kiln, thereby improving the space utilization rate in the kiln.

[0013] More preferably, the first roller way and the second roller way are respectively provided with kiln cars running thereon, which are used for transferring and shaping the ceramic powder and the finished foamed ceramic plate.

[0014] More preferably, the heat preservation kiln is provided with a heat preservation box for conveying finished foamed ceramic plate, preventing cracking caused by excessive temperature difference.

[0015] As preferred, the first and second transfer cars are further included, the first transfer car is arranged between the kiln and the drying section, and the second transfer car is arranged between the kiln and the heat preservation kiln, for conveying ceramic powder and finished foamed ceramic plate of the kiln, realizing full-process automation and improving production efficiency.

[0016] The utility model discloses the advantages are:

[0017] (1) the foamed ceramic production line is provided with the drying section, the kiln, the heat preservation kiln and the loading and unloading system formed in circulation, can realize the full automatic loading of ceramic, firing and the full process of unloading, and the production efficiency is high, and the first roller way and the second roller way of stacking are arranged in the heat preservation kiln, can carry out the layered conveying and heat preservation treatment to the foamed ceramic plate in the kiln, slowly cools the product through the conveying speed of two layers of roller way, speeds up the product forming under the condition of not increasing the total kiln length, improves the processing efficiency of foamed ceramic plate, prevents foamed ceramic plate from being broken in transportation under the influence of temperature, and improves the yield of finished foamed ceramic plate.

[0018] (2) the drying section of the foamed ceramic production line is provided with a flue gas heat exchanger, the flue gas heat exchanger can utilize the hot waste gas generated by the kiln to heat the gas, and the heated gas is used for preheating the ceramic powder in the drying section, and the moisture extracted in the drying section is input into the kiln through the flue gas heat exchanger for circulation, improving the heat utilization rate and reducing energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 The utility model provides the layout of foamed ceramic production line;

[0020] Fig. 2 The cross-sectional structure of the drying section is provided;

[0021] Fig. 3 The cross-sectional structure of the heat preservation kiln is provided.

[0022] REFERENCE SIGNS:

[0023] 1, drying section; 11, single-layer drying roller; 12, flue gas heat exchanger; 2, kiln; 21, single-layer roller; 22, lifting box; 23, double-layer roller; 3, heat preservation kiln; 31, first roller; 32, second roller; 33, heat preservation cavity; 4, loading and unloading system; 41, double-layer conveying roller table; 42, lifting roller table; 43, single-layer conveying roller table; 44, conveying vehicle; 45, first mechanical arm; 46, high-difference conveying vehicle; 47, plate unloader; 48, plate storage machine; 49, paper laying machine; 410, second mechanical arm; 411, pneumatic alignment machine; 412, paper laying platform; 413, cloth machine; 414, first transfer vehicle; 415, second transfer vehicle. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0025] As shown in the drawings, Figs. 1-3 The present embodiment discloses a foamed ceramic production line, which comprises a drying section 1, a kiln 2, a heat preservation kiln 3 and a loading and unloading system 4 connected in sequence and end to end. The drying section 1, the kiln 2, the heat preservation kiln 3 and the loading and unloading system 4 are connected to form a ring shape. The heat preservation kiln 3 is provided with a heat preservation cavity 33. The heat preservation cavity 33 is provided with a first roller 31 and a second roller 32. The first roller 31 and the second roller 32 are stacked. The loading and unloading system 4 comprises a double-layer conveying roller table 41, a lifting roller table 42 and a single-layer conveying roller table 43 connected in sequence. The double-layer conveying roller table 41 is connected to the heat preservation cavity 33. The loading and unloading system 4 comprises conveying and loading and unloading equipment from the foamed ceramic heat preservation kiln 3 to the drying section 1, which is used for transferring and conveying foamed ceramic plate powder and finished products. The finished foamed ceramic plate fired in the kiln 2 enters the heat preservation cavity 33 for storage and movement. The space utilization rate in the cavity is improved through layered conveying. At the same time, the finished foamed ceramic plate needs time for cooling, which prevents stress cracking and improves the yield of the foamed ceramic plate product.

[0026] Preferably, kiln cars run on the first roller 31 and the second roller 32 respectively. The kiln cars are used for conveying ceramic powder.

[0027] Further, the loading and unloading system 4 further comprises a conveying vehicle 44, a first mechanical arm 45, a height difference conveying vehicle 46, a plate unloading machine 47 and a plate storage machine 48 arranged in sequence, the conveying vehicle 44 is connected with the single-layer conveying roller table 43, the first mechanical arm 45 is arranged between the conveying vehicle 44 and the height difference conveying vehicle 46, the plate storage machine 48 is used for storing tools such as kiln cars and can flexibly send a number of kiln cars into the kiln 2, the first mechanical arm 45 is used for moving the foamed ceramic plate between the conveying vehicle 44 and the height difference conveying vehicle 46, and the height difference conveying vehicle 46 can transfer the kiln car loaded with the ceramic along the height direction.

[0028] Preferably, the conveying vehicle 44 is an AGV, which has a navigation capability and can run by itself, and has high efficiency in transferring materials.

[0029] Further, the loading and unloading system 4 further comprises a paper laying machine 49, a second mechanical arm 410, a pneumatic aligning machine 411, a paper laying platform 412 and a material distributing machine 413 arranged in sequence, the paper laying machine 49 is connected with the plate unloading machine 47, the material distributing machine 413 is connected with the drying section 1,

[0030] The working process of the loading and unloading system 4 is as follows: the kiln car in the holding kiln 3 that is conveyed outward through the first roller 31 and the second roller 32 passes through the double-layer conveying roller table 41, is conveyed to the single-layer conveying roller table 43 through the lifting roller table 42, and is automatically conveyed to the surrounding plate working area by the conveying vehicle 44, the first mechanical arm 45 grabs the surrounding plate on the kiln car to the height difference conveying vehicle 44 in the underground pit, the height difference conveying vehicle 46 runs to the surrounding plate working area, the kiln car is automatically unloaded to the specified position by the plate unloading machine 47 in the plate unloading area, the plate storage machine 48 is used for storing excess kiln furniture to replace the kiln furniture with damaged surrounding plates, the kiln car automatically lays the bottom paper after coming to the paper laying machine 49, the surrounding plate is placed on the kiln car by the second mechanical arm 410 in the surrounding plate working area, the kiln car comes to the paper laying platform 412 after being centered by the pneumatic aligning machine 411, the staff performs the ceramic paper pasting work on the surrounding plate, the kiln car runs to the material distributing machine 413 to perform material distribution, and the kiln car with ceramic powder enters the single-layer drying roller kiln 11 to perform firing.

[0031] Further, the drying section 1 comprises a single-layer drying roller 11, one end of the single-layer drying roller 11 is connected with the loading and unloading system 4, and the other end is connected with the kiln 2, the drying section 1 utilizes the high-temperature flue gas generated in the kiln 2 to preheat the ceramic powder in the section, the ceramic powder is first raised to a certain temperature before firing, which can shorten the heating time of the ceramic powder in the kiln 2, accelerate the product out of the kiln, thereby increasing the yield of the foamed ceramic and achieving the effect of energy saving.

[0032] Further, the drying section 1 further comprises a flue gas heat exchanger 12, one end of the flue gas heat exchanger 12 is communicated with the single-layer drying roller 11, the other end of the flue gas heat exchanger 12 is communicated with the kiln 2, the high-temperature flue gas discharged from the single-layer drying roller 11 is heat-exchanged in the flue gas heat exchanger 12, the low-temperature flue gas after heat exchange is sent to the flue gas treatment equipment for harmless treatment, the clean hot air heated in the flue gas heat exchanger 12 is sent to the single-layer drying roller kiln 11 through a pipeline to preheat the foamed ceramic powder, the humid gas extracted from the single-layer drying roller kiln 11 is extracted, transported and heated by the flue gas heat exchanger 12 and then sent to the single-layer drying roller kiln 11 for recycling, the waste heat of the single-layer drying roller 11 is utilized to reduce energy consumption.

[0033] Further, the kiln 2 is provided with a single-layer roller 21, a lifting box 22 and a double-layer roller 23 connected in sequence, the single-layer roller 21 is provided with a sintering section and a rapid cooling section, the double-layer roller 23 is provided with a cooling section, the single-layer roller 21 is connected with the drying section 1, the double-layer roller 23 is connected with the holding kiln 3, the kiln 2 is a wide-body kiln for sintering the foamed ceramic powder and making it foamed and formed and cooled, the single-layer roller 21 and the double-layer roller 23 are connected by the lifting box 22, the lifting box 22 transports the kiln car from the single-layer roller 21 to the double-layer roller 23 through lifting movement to realize layered transportation of the foamed ceramic plate, the two sections are connected by the single-layer lifting box 22 to transfer the foamed ceramic kiln car, the foamed ceramic plate is sintered and foamed in the single-layer roller 21, rapidly cooled to 700℃, then the kiln car is sent to the cooling section of the double-layer roller 23 through the lifting box 22 for cooling, the cooling water consumption time is long, the single-layer is changed into double-layer to fully utilize the kiln space and reduce the waiting time, thereby improving the production efficiency.

[0034] More preferably, the holding kiln 3 is provided with a holding box for transporting the foamed ceramic plate product, the ceramic product sintered and formed in the kiln 2 still has a certain temperature inside, the holding box is used to transfer the product to the holding kiln 3, the stress inside the foamed ceramic is slowly released during the movement in the holding kiln 3, and the cracking of the foamed ceramic caused by large internal and external stress can be avoided.

[0035] Preferably, the system further comprises a first transfer car 414 and a second transfer car 415, the first transfer car 414 is arranged between the kiln 2 and the drying section 1, the second transfer car 415 is arranged between the kiln 2 and the holding kiln 3, the first transfer car 414 and the second transfer car 415 are used to transport the ceramic powder to the kiln 2 and transport the foamed ceramic plate sintered in the kiln 2 to the holding kiln 3 for temporary storage to realize full-automatic production.

[0036] The foamed ceramic production line uses a roller kiln to burn the foamed ceramic powder, preheats the foamed ceramic powder by removing the waste heat of flue gas, speeds up the heating speed of the foamed ceramic after entering the kiln 2, reduces the energy consumption of the kiln 2, shortens the production time and increases the production capacity; two kiln bodies with different layers are arranged in the kiln 2, the front section is a burning section and a rapid cooling section of the product, a single-layer roller 21 is used for conveying, the product can be quickly burned and foamed and rapidly cooled to 700 DEG C, the rear section is a slow cooling section, a double-layer roller 23 is used for conveying, the conveying speed of the double-layer roller 23 is reduced, the product is slowly cooled, the product burning time is accelerated without increasing the length of the total kiln 2, the product capacity and the cooling performance are effectively improved; the foamed ceramic production line is used for slowly releasing the thermal stress generated by the internal temperature of the product when the foamed ceramic heat preservation box is used for heat preservation, and the product is prevented from cracking.

[0037] According to the disclosure and teaching of the above description, the skilled in the art of the utility model can also change and modify the above embodiments. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the utility model should also fall within the protection scope of the claims of the utility model. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the utility model.

Claims

1. A foamed ceramic production line, comprising a drying section (1), a kiln (2), a heat-insulating kiln (3), and a loading and unloading system (4) connected end to end, wherein the drying section (1), the kiln (2), the heat-insulating kiln (3), and the loading and unloading system (4) are connected in a ring, characterized in that: The heat preservation kiln (3) is provided with a heat preservation cavity (33), and the heat preservation cavity (33) is provided with a first roller conveyor (31) and a second roller conveyor (32). The first roller conveyor (31) and the second roller conveyor (32) are stacked. The loading and unloading system (4) includes a double-layer conveying roller table (41), a lifting roller table (42) and a single-layer conveying roller table (43) connected in sequence. The double-layer conveying roller table (41) is connected to the heat preservation cavity (33).

2. The foamed ceramic production line according to claim 1, characterized in that: The loading and unloading system (4) further includes a conveyor (44), a first robot (45), a height difference transport vehicle (46), a plate unloader (47), and a plate storage machine (48) arranged in sequence. The conveyor (44) is connected to the single-layer conveyor roller table (43). The first robot (45) is located between the conveyor (44) and the height difference transport vehicle (46). The plate storage machine (48) is used for unloading.

3. The foamed ceramic production line according to claim 2, characterized in that: The transport vehicle (44) is an AGV.

4. The foamed ceramic production line according to claim 2, characterized in that: The loading and unloading system (4) also includes a paper laying machine (49), a second robotic arm (410), a pneumatic alignment machine (411), a paper laying platform (412), and a material spreading machine (413) arranged in sequence. The paper laying machine (49) is connected to the unloading machine (47), and the material spreading machine (413) is connected to the drying section (1).

5. The foamed ceramic production line according to claim 1, characterized in that: The drying section (1) includes a single-layer drying roller conveyor (11), one end of which is connected to the loading and unloading system (4), and the other end is connected to the kiln (2).

6. The foamed ceramic production line according to claim 5, characterized in that: The drying section (1) also includes a flue gas heat exchanger (12), one end of which is connected to the single-layer drying roller conveyor (11), and the other end of which is connected to the kiln (2).

7. The foamed ceramic production line according to any one of claims 1-6, characterized in that: The kiln (2) is provided with a single-layer roller conveyor (21), a lifting box (22) and a double-layer roller conveyor (23) connected in sequence. The single-layer roller conveyor (21) is provided with a firing section and a rapid cooling section. The double-layer roller conveyor (23) is provided with a cooling section. The single-layer roller conveyor (21) is connected to the drying section (1), and the double-layer roller conveyor (23) is connected to the heat preservation kiln (3).

8. The foamed ceramic production line according to claim 7, characterized in that: Kiln cars are running on the first roller conveyor (31) and the second roller conveyor (32), respectively.

9. The foamed ceramic production line according to claim 8, characterized in that: The heat preservation kiln (3) is equipped with a heat preservation box.

10. The foamed ceramic production line according to claim 9, characterized in that: It also includes a first shuttle car (414) and a second shuttle car (415), the first shuttle car (414) being disposed between the kiln (2) and the drying section (1), and the second shuttle car (415) being disposed between the kiln (2) and the heat preservation kiln (3).

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