Rock plate hot bending roller kiln

Abstract

The utility model discloses a rock plate hot bending roller kiln which comprises a kiln body, a ferry vehicle and a conveying line, the kiln body comprises a preheating section, a medium temperature section, a high temperature section, a quenching section, a slow cooling section and a tail cooling section which are sequentially arranged in the conveying direction, and the conveying line is arranged in the kiln body and extends outwards from the tail cooling section to the preheating section; according to the rock plate hot bending roller kiln, rock plates can be placed on the ferry vehicles, the ferry vehicles drive the rock plates to enter the kiln body and sequentially pass through the preheating section, the medium-temperature section, the high-temperature section, the quenching section, the slow cooling section and the tail cooling section of the kiln body, and the rock plates are matched with molds on the ferry vehicles in the preheating section, the medium-temperature section and the high-temperature section to be subjected to hot bending to form corresponding structures. And the rock plates are cooled and formed in the quenching section, the slow cooling section and the tail cooling section, and the formed rock plates are sent out from the kiln body by the ferry vehicle, so that continuous circulating hot bending processing of the rock plates is realized, the number of the rock plates processed by the kiln is greatly increased, and the cooling forming speed and the overall production efficiency after hot bending of the rock plates are greatly improved.

Description

Technical field:

[0001] The utility model relates to the technical field of ceramic kilns, in particular to a rock slab hot bending roller kiln. Background technology:

[0002] Rock slabs are new ceramic materials made from natural raw materials through special processes. Ceramic rock slabs are mainly used in home furnishings, kitchen slabs, bathtubs and other fields. Curved ceramic rock slabs can be used in arc-shaped space design to maintain the overall unity. Therefore, the curved surface of ceramic rock slabs is generally fired by hot bending. The existing ceramic rock slab hot bending furnace adopts the structure of a bread oven. The curved surface of the rock slab is fired by placing the rock slab on a mold and hot bending it at high temperature. However, the processing method of the rock slab being placed in the kiln results in a small number of rock slabs processed each time, and the rock slab is cooled and formed by natural cooling after firing. The temperature of the rock slab after hot bending is as high as 1200℃, and the final forming of the rock slab needs to be cooled to 200℃, which results in the intermittent hot bending of the rock slab. The entire processing and forming time takes 7-8 hours, the production efficiency is low, and the cooling speed of natural cooling cannot be accurately controlled, resulting in large differences in the color and quality of each finished product. Therefore, it is necessary to design a new rock slab kiln structure to solve the above problems. Utility model content:

[0003] In order to solve the above technical problems, the utility model provides a rock slab hot bending roller kiln, which can realize continuous cyclic hot bending processing of rock slabs, greatly increasing the number of rock slabs processed by the kiln. The temperature in the kiln body is controllable, which can ensure and improve the color and quality of each finished product.

[0004] A roller kiln for hot bending of rock slabs comprises a kiln body, a shuttle bus and a conveyor line, wherein the kiln body comprises a preheating section, a medium temperature section, a high temperature section, a rapid cooling section, a slow cooling section and a tail cooling section which are arranged in sequence along the conveying direction, the conveyor line is arranged in the kiln body, and the conveyor line extends outward from the tail cooling section back to the preheating section, the shuttle bus is slidably connected to the conveyor line, and can return to the preheating section after passing through the preheating section, the medium temperature section, the high temperature section, the rapid cooling section, the slow cooling section and the tail cooling section in sequence, and the shuttle bus is provided with a mold for hot bending of rock slabs.

[0005] Preferably, a plurality of electric heating rods are arranged up and down in the preheating section, the medium temperature section and the high temperature section, and the length of the preheating section is smaller than the length of the medium temperature section, and the length of the medium temperature section is smaller than the length of the high temperature section.

[0006] Preferably, the kiln body is provided with a first fan above the preheating section, and the first fan is connected with the top of the preheating section through an exhaust pipe.

[0007] Preferably, an exhaust pipe extending from the rapid cooling section to the tail cooling section is arranged above the kiln body, a second fan is connected to the rear side of the exhaust pipe, and the bottom surface of the exhaust pipe is connected to the rapid cooling section, slow cooling section and tail cooling section respectively through a first diversion pipe.

[0008] Preferably, a plurality of cooling pipes are disposed above and below the rapid cooling section and the slow cooling section, one end of the cooling pipe is connected to the outside through the kiln wall of the kiln body, and the other end of the cooling pipe is connected to the exhaust pipe through a reflux pipe.

[0009] Preferably, a third fan is provided at the front side of the exhaust pipe, the third fan is connected to an air supply pipe, and the air supply pipe is connected to the front and rear sides of the tail cooling section through a second diverter pipe.

[0010] The beneficial effect of the utility model is that the rock slab hot bending roller kiln cooperates with the kiln body, the shuttle bus and the conveyor line, so that the rock slab can be placed on the shuttle bus, and multiple shuttle buses drive the rock slab into the kiln body, and pass through the preheating section, medium temperature section, high temperature section, rapid cooling section, slow cooling section and final cooling section of the kiln body in sequence, wherein the rock slab is hot bent into a corresponding structure in cooperation with the mold on the shuttle bus in the preheating section, medium temperature section and high temperature section, and the rock slab is cooled and formed in the rapid cooling section, slow cooling section and final cooling section, and the formed rock slab is sent out of the kiln body by the shuttle bus, thereby realizing continuous cyclic hot bending processing of the rock slab, greatly increasing the number of rock slabs processed by the kiln, and the entire rock slab hot bending forming time is shortened to 2-3 hours, which greatly improves the cooling and forming speed of the rock slab after hot bending and the overall production efficiency, and at the same time, the temperature in the kiln body is controllable, which can ensure and improve the color and quality of each finished product. Description of the drawings:

[0011] Attached Figure 1 This is a front view of the utility model;

[0012] Attached Figure 2 It is a top view of the utility model;

[0013] Attached Figure 3 This is a schematic diagram of the utility model process;

[0014] Attached Figure 4 This is a schematic diagram of the structure of the preheating mechanism in the utility model;

[0015] Attached Figure 5 It is a schematic diagram of the structure of the rapid cooling section, slow cooling section and tail cooling section in the utility model.

[0016] In the figure: 1 kiln body, 2 shuttle car, 3 conveyor line, 4 preheating section, 5 medium temperature section, 6 high temperature section, 7 rapid cooling section, 8 slow cooling section, 9 tail cooling section, 10 electric heating rod, 11 first fan, 12 exhaust duct, 13 exhaust duct, 14 second fan, 15 first diversion pipe, 16 cooling pipe, 17 reflux pipe, 18 third fan, 19 air supply pipe, 20 second diversion pipe. Specific implementation method:

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, so as to provide a clearer understanding of the technical concept to be protected by the present invention.

[0018] like Figures 1 to 5 As shown, a roller kiln for hot bending of rock slabs comprises a kiln body 1, a shuttle bus 2 and a conveyor line 3, wherein the kiln body 1 comprises a preheating section 4, a medium temperature section 5, a high temperature section 6, a rapid cooling section 7, a slow cooling section 8 and a tail cooling section 9 which are sequentially arranged along the conveying direction, the conveyor line 3 is arranged in the kiln body 1, and the conveyor line 3 extends outward from the tail cooling section 9 back to the preheating section 4, the shuttle bus 2 is slidably connected to the conveyor line 3, and can return to the preheating section 4 after passing through the preheating section 4, the medium temperature section 5, the high temperature section 6, the rapid cooling section 7, the slow cooling section 8 and the tail cooling section 9 in sequence, and the shuttle bus 2 is provided with a mold for hot bending of rock slabs.

[0019] The working principle of the rock plate hot bending roller kiln described in the utility model is realized by the cooperation between the kiln body 1, the shuttle car 2 and the conveyor line 3. Figures 1 to 5As shown, the staff places the rock slab to be processed on the shuttle bus 2, and multiple shuttle buses 2 drive the rock slab into the kiln body 1, and pass through the preheating section 4, medium temperature section 5, high temperature section 6, rapid cooling section 7, slow cooling section 8 and tail cooling section 9 of the kiln body 1 in turn. The conveyor line 3 can adopt a conventional conveyor line structure in which a motor and gear cooperate to drive a stick, so it is not described in detail. The rock slab is hot-bent into a corresponding structure in the preheating section 4, medium temperature section 5 and high temperature section 6 with the mold on the shuttle bus 2 (not shown in the figure), such as forming a groove on the rock slab. Compared with the method of punching holes in the rock slab, the groove surface formed by hot bending of the rock slab is smoother and more beautiful. The temperature in the preheating section 4 is 150℃-600℃, the temperature in the medium temperature section 5 is 600℃-1000℃, and the temperature in the high temperature section 6 is 1000℃-1200℃. Then the rock slab with a temperature of up to 1200℃ continues to be rapidly cooled. The rock slabs are cooled and formed in the rapid cooling section 7, the slow cooling section 8 and the tail cooling section 9. The temperature in the rapid cooling section 7 is 650℃-950℃, the temperature in the slow cooling section 8 is 450℃-650℃, and the temperature in the tail cooling section 9 is 200℃ to 450℃. Finally, the shuttle bus 2 sends the formed rock slabs from the kiln body 1 to the return line. The staff can unload the processed rock slabs and place the rock slabs to be processed on the shuttle bus 2, so as to cyclically carry out the hot bending processing of the rock slabs. Compared with the traditional kiln, the rock slab hot bending roller kiln can realize the continuous cyclic hot bending processing of the rock slabs, which greatly increases the number of rock slabs processed by the kiln. After being put into production and use, the time for the entire rock slab hot bending forming is shortened to 2-3 hours, which greatly improves the cooling and forming speed of the rock slab after hot bending and significantly improves the overall production efficiency. At the same time, the temperature in the kiln body is controllable, which ensures and greatly improves the color and quality of each finished product.

[0020] Specifically, a plurality of electric heating rods 10 are arranged in the preheating section 4, the medium temperature section 5 and the high temperature section 6, and the length of the preheating section 4 is smaller than that of the medium temperature section 5, and the length of the medium temperature section 5 is smaller than that of the high temperature section 6. The kiln body 1 is provided with a first fan 11 above the preheating section 4, and the first fan 11 is connected to the top of the preheating section 4 through an exhaust pipe 12. Figures 1 to 5 As shown, the electric heating rod 10 can be a silicon carbon rod, and the kiln body 1 uses electric heating without generating smoke during the heating process. The first fan 11 can be an induced draft fan, and the induced draft fan exhausts the preheating section 4, the medium temperature section 5 and the high temperature section 6 through the exhaust pipe 12, so as to keep the air pressure in the kiln body 1 consistent and accurately control the heating temperature. The shuttle bus 2 transports along the preheating section 4, the medium temperature section 5 and the high temperature section 6 and can gradually heat up according to the preset temperature value, and the rock slabs on the shuttle bus 2 are hot bent.

[0021] Furthermore, an exhaust pipe 13 extending from the rapid cooling section 7 to the tail cooling section 9 is arranged above the kiln body 1, a second fan 14 is connected to the rear side of the exhaust pipe 13, and the bottom surface of the exhaust pipe 13 is respectively connected to the rapid cooling section 7, the slow cooling section 8 and the tail cooling section 9 through a first shunt pipe 15, wherein a plurality of cooling pipes 16 are arranged above and below the rapid cooling section 7 and the slow cooling section 8, one end of the cooling pipe 16 is connected to the outside through the kiln wall of the kiln body 1, and the other end of the cooling pipe 16 is connected to the exhaust pipe 13 through a reflux pipe 17, as shown in FIG. Figures 1 to 5 As shown, the second fan 14 can be an induced draft fan, and the cooling air is sent into the cooling pipe 16 from the kiln wall of the kiln body 1. The cooling pipe 16 can be made of silicon carbide. The cooling pipe 16 exchanges heat with the air in the rapid cooling section 7 so that the air in the rapid cooling section 7 can be cooled, and then the hot-bent rock slab can be cooled. The air in the cooling pipe 16 is then transported to the exhaust pipe 13 along the return pipe 17, and discharged from the exhaust pipe 13 to the outside. The slow cooling section 8 cools the rock slab in the same way. It should be noted that the slow cooling section 8 adopts a slow cooling method, and the preset cooling speed of the slow cooling section 8 is slower than the preset cooling speed of the rapid cooling section 7 to prevent the rock slab from cooling too quickly and causing brick explosion.

[0022] Furthermore, a third fan 18 is provided at the front side of the exhaust pipe 13, and the third fan 18 is connected to an air supply pipe 19, and the air supply pipe 19 is connected to the front and rear sides of the tail cooling section 9 through a second shunt pipe 20. Figures 1 to 5 As shown, the third fan 18 can be a blower. The third fan 18 sends cooling air into the kiln wall of the tail cooling section 9 through the air supply pipe 19 and the second branch pipe 20 to cool the tail cooling section 9, and the hot air in the rapid cooling section 7, the slow cooling section 8 and the tail cooling section 9 can be transported to the exhaust pipe 13 along the first branch pipe 15, and discharged to the outside through the exhaust pipe 13.

[0023] The above are only specific embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A rock plate hot bending roller kiln, characterized in that: It includes a kiln body, a shuttle bus and a conveyor line. The kiln body includes a preheating section, a medium temperature section, a high temperature section, a rapid cooling section, a slow cooling section and a tail cooling section which are arranged in sequence along the conveying direction. The conveyor line is arranged in the kiln body, and the conveyor line extends outward from the tail cooling section back to the preheating section. The shuttle bus is slidably connected to the conveyor line and can return to the preheating section after passing through the preheating section, the medium temperature section, the high temperature section, the rapid cooling section, the slow cooling section and the tail cooling section in sequence. The shuttle bus is provided with a mold for hot bending of the rock slab.

2. A rock plate hot bending roller kiln according to claim 1, characterized in that: A plurality of electric heating rods are arranged in the preheating section, the medium temperature section and the high temperature section, and the length of the preheating section is smaller than that of the medium temperature section, and the length of the medium temperature section is smaller than that of the high temperature section.

3. The rock plate hot bending roller kiln according to claim 2, characterized in that: The kiln body is provided with a first fan above the preheating section, and the first fan is connected with the top of the preheating section through an exhaust pipe.

4. A rock plate hot bending roller kiln according to claim 3, characterized in that: An exhaust pipe extending from the rapid cooling section to the tail cooling section is arranged above the kiln body, a second fan is connected to the rear side of the exhaust pipe, and the bottom surface of the exhaust pipe is connected to the rapid cooling section, slow cooling section and tail cooling section respectively through a first diversion pipe.

5. The rock plate hot bending roller kiln according to claim 4, characterized in that: A plurality of cooling pipes are arranged above and below the rapid cooling section and the slow cooling section, one end of the cooling pipe is connected to the outside through the kiln wall of the kiln body, and the other end of the cooling pipe is connected to the exhaust pipe through a reflux pipe.

6. The rock plate hot bending roller kiln according to claim 5, characterized in that: A third fan is arranged at the front side of the exhaust pipe, the third fan is connected to an air supply pipe, and the air supply pipe is communicated with the front and rear sides of the tail cooling section through a second diverter pipe.

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