Zirconium oxide high-temperature tunnel kiln

Abstract

The invention belongs to the field of tunnel kilns, and particularly relates to a zirconium oxide high-temperature tunnel kiln which comprises a firing area, a transfer device, a rapid cooling area and a slow cooling area, the firing area is sequentially provided with a preheating area and a high-temperature area from front to back, and the transfer device for transporting a kiln car in different directions is arranged at the rear end of the high-temperature area. The rapid cooling area and the slow cooling area are arranged on the two sides of the transfer device correspondingly. According to the device, the movement direction of the kiln car can be changed through the transfer device, different cooling steps can be carried out on products according to production requirements, the production efficiency is improved, a production line is more perfect, products of various properties can be produced without shutdown, and energy consumption is reduced under the effect of reducing shutdown and restarting.

Description

Technical Field

[0001] The present invention relates to the field of tunnel kilns, and particularly to a high-temperature zirconia tunnel kiln. Background Art

[0002] Zircon sand ore bodies are usually found in coastal placer deposits or alluvial placer deposits. After mining zircon sand, it is decomposed by alkali fusion method to produce zirconia. Due to its high melting point, corrosion resistance, mechanical strength and chemical stability, zirconia has a wide range of applications in the chemical industry. It has different mechanical properties in different processing procedures. Zirconia exists in three crystal forms under normal pressure: monoclinic phase (m-ZrO2), tetragonal phase (t-ZrO2) and cubic phase (c-ZrO2). The difference between the above crystal forms lies in the different cooling conditions after firing in the tunnel kiln. Rapid cooling at high temperature and adding other processes such as catalysts can stabilize the tetragonal phase at room temperature. High-toughness ceramics (such as dental materials and cutting tools) rely on the transformation toughening effect of tetragonal zirconia. If it is slowly cooled below 1170 °C, it will gradually transform into a stable monoclinic phase. Zirconia mainly composed of monoclinic phase has low mechanical strength and is commonly used in thermal insulation materials or low-stress environments. The existing zirconia tunnel kiln only has one cooling tunnel, and the production and manufacturing of zirconia are not flexible enough. If zirconia of multiple properties needs to be produced, the production line needs to be stopped and the cooling area needs to be reset. Therefore, when restarting the operation after shutdown, it will cause waste of energy resources and also affect the efficiency of the production line.

[0003] Therefore, to solve the above existing problems, a high-temperature zirconia tunnel kiln is specifically proposed. Summary of the Invention

[0004] The present invention aims at the problems existing above and specifically designs a high-temperature zirconia tunnel kiln. This device can change the movement direction of the kiln car through a transfer device, and perform different cooling steps on the product according to production requirements, improving production efficiency, making the production line more perfect, being able to produce products of multiple properties without stopping the machine, and reducing energy consumption while reducing shutdown and restart.

[0005] To achieve the above object, the present invention provides a high-temperature zirconia tunnel kiln, including: a firing area, a transfer device, a rapid cooling area and a slow cooling area. The firing area is sequentially provided with a preheating area and a high-temperature area from front to back. The rear end of the high-temperature area is provided with the transfer device for transporting the kiln car in different directions, and the rapid cooling area and the slow cooling area are respectively arranged on both sides of the transfer device.

[0006] In the above manner, when the kiln car after firing needs to enter different cooling areas according to requirements, the transfer device rotates to make the kiln car move to the established cooling area.

[0007] Furthermore, the transfer device includes: a connecting box body, a heat insulation part, a transfer tray, a pushing and pulling device, a reversing disc, and a fixed disc. The connecting box body is arranged behind the high-temperature area. Heat insulation parts are provided at the joints of the connecting box body with the high-temperature area, the rapid cooling area, and the slow cooling area. The transfer tray is arranged inside the connecting box body. The pushing and pulling device is fixedly connected to the transfer tray. The reversing disc is rotatably connected to the telescopic end of the pushing and pulling device. The fixed disc is fixedly connected to the bottom of the kiln car and is connected to the reversing disc.

[0008] In the above manner, the heat insulation part is a rolling shutter door supported by fireproof materials. Through the heat insulation part, the heat in the firing area can be effectively prevented from entering the cooling area, and the motors and hydraulic components at the transfer device can be protected. The pushing and pulling device drives the reversing disc to be clamped on the fixed disc, and then the kiln car is pulled above the transfer tray. By rotating the transfer tray, the orientation of the kiln car is changed, and then the kiln car is withdrawn through the pushing and pulling device and enters the cooling area.

[0009] Furthermore, the pushing and pulling device includes: a linear driving device, a tail plate, a support seat, a clamping block, and a support plate. The tail plate is fixedly connected to the transfer tray. One end of the linear driving device is fixedly connected to the tail plate, and the other end is rotatably connected to the reversing disc. The support seat is supported under the linear driving device. Both sides of the clamping block are fixedly connected with the support plates. The clamping block covers the linear driving device, and the support plates are fixedly connected to the transfer tray.

[0010] Furthermore, the reversing disc includes: a mounting groove, a clamping part, an elastic member, a main shaft, and a torsion clamping block. The bottom of the reversing disc is connected with the main shaft. The main shaft is clamped with the torsion clamping block. Two mounting grooves are formed at the top of the reversing disc. A number of elastic members are arranged inside the mounting grooves. One end of the clamping part is fixedly connected in the mounting groove and is located above the elastic members. The end of the clamping part is clamped with the fixed disc.

[0011] Furthermore, the fixed disc includes a slideway and a bayonet. An arc-shaped slideway is formed on the surface of the fixed disc. Both ends of the slideway penetrate through the side part of the fixed disc. Bayonets are formed on both sides of the middle part of the slideway.

[0012] In the above manner, the clamping part can move within the installation groove. Supported by the elastic member at the bottom, it can be squeezed and reset. When the push-pull device drives the reversing disc into the lower part of the kiln car, the clamping block first abuts against the edge of the fixed disc. After being pressed down, it continues to move forward. When it enters the slideway position, it is reset by the action of the elastic member. The clamping block is clamped at the bayonet. When the push-pull device pulls, it can drive the kiln car to move and move to the position where the main shaft is clamped with the torsion clamping block. When it is necessary to push the kiln car out, the push-pull device drives the clamping block to advance from the bayonet to the slideway position. The torsion clamping block drives the main shaft and the reversing disc to rotate, so that the other clamping block moves into the slideway and abuts against the other bayonet, and then the kiln car is pushed into the cooling area.

[0013] Furthermore, the transfer device further includes a limiting part and a track. The track is opened on the transfer disc, and the limiting part is fixedly connected to the track.

[0014] Furthermore, the rapid cooling area includes: a blowing part, a suction part, and a water cooling device. The blowing part is arranged at the lower part of the rapid cooling area. The water cooling devices are installed on the side wall and the top wall of the rapid cooling area. The suction part is arranged at the upper part of the rapid cooling area.

[0015] Furthermore, it further includes a guide plate. There are several guide plates. Several guide plates are fixedly connected to the water cooling devices on the side wall and are internally provided with water cooling pipes.

[0016] In the above manner, the air at a relatively low temperature outside is blown in by blowing at the bottom. After the air temperature rises and due to the fact that it is blown in from the bottom, the air will rise and be sucked away by the suction part at the upper part. When the air passes through the baffle of the water cooling device, the air exchange efficiency is higher under the guiding action, and the water cooling pipes in the baffle can also play a role in cooling.

[0017] Furthermore, it further includes an anti-impact device. The anti-impact device is fixedly connected to the chain of the gear-chain system for driving the kiln car to move.

[0018] Furthermore, the anti-rush device includes: a contact block, a stop block, a buckle plate, a steel wire rope, a sliding rod, a fixed box and a spring. The contact block is fixedly connected to the chain, the stop block is fixedly connected to the bottom of the kiln car, the buckle plate is of a right-angled structure, the buckle plate is rotatably connected to the stop block and its end covers the contact block, both ends of the buckle plate are connected with the steel wire rope, the fixed boxes are fixedly connected to both sides of the kiln car, a spring is arranged inside the fixed box, the sliding rod is slidably connected inside the fixed box and is located above the spring, and the sliding rod is fixedly connected to the steel wire rope. Auxiliary baffle plates are fixedly connected to the side walls on both sides of the firing area, the rapid cooling area and the slow cooling area. The auxiliary baffle plates are of an upwardly inclined structure in the moving direction of the kiln car, and the sliding rod is slidably connected to the upper surface of the auxiliary baffle plate.

[0019] In the above way, to prevent the problem of the kiln car rushing forward caused by the sudden stop of the malfunctioning machine during operation, through the effect that the sliding rod will be lifted when passing through the auxiliary baffle plate, the buckle plate is pulled up by the steel wire rope. When running beyond the auxiliary baffle plate, the sliding rod drops, and the buckle plate also drops, and then it is lapped on the contact block. When the kiln car rushes forward, the buckle plate can play a limiting role. When running to the other end of the channel and it is necessary to transfer or transport out the kiln car, the buckle plate is lifted in the same way. At this time, the contact block runs to the sprocket and will move in a downward arc, and at this time it also avoids the limiting range of the buckle plate. When the buckle plate drops again, it will not conflict with the contact block.

[0020] In summary, an yttria-stabilized zirconia high-temperature tunnel kiln of the present invention has the following advantages and beneficial technical effects: 1. The yttria-stabilized zirconia high-temperature tunnel kiln of the present invention can change the moving direction of the kiln car through the transfer device, perform different cooling steps on the product according to production requirements, improve production efficiency, make the production line more perfect, can produce products of various properties without stopping the machine, and reduce energy consumption while reducing the effect of stopping and restarting the machine; 2. The yttria-stabilized zirconia high-temperature tunnel kiln of the present invention realizes a cooling method that can be arbitrarily controlled by setting two cooling areas. The rapid cooling area speeds up the cooling effect by accelerating air circulation and improving heat exchange efficiency; 3. The anti-rush device of the yttria-stabilized zirconia high-temperature tunnel kiln of the present invention can prevent the phenomenon of the kiln car rushing forward caused by malfunction shutdown, prevent the kiln car from expanding, and improve the safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 is a schematic structural diagram of an yttria-stabilized zirconia high-temperature tunnel kiln of the present invention; Figure 2 It is a schematic external structure diagram of a transfer device of a zirconia high-temperature tunnel kiln of the present invention; Figure 3 It is a schematic internal structure diagram of a transfer device of a zirconia high-temperature tunnel kiln of the present invention; Figure 4 It is a schematic structure diagram of a reversing disc of a zirconia high-temperature tunnel kiln of the present invention; Figure 5 It is a schematic connection structure diagram of a reversing disc and a kiln car of a zirconia high-temperature tunnel kiln of the present invention; Figure 6 It is a schematic structure diagram of a fixed disc of a zirconia high-temperature tunnel kiln of the present invention; Figure 7 It is a schematic structure diagram of a rapid cooling zone of a zirconia high-temperature tunnel kiln of the present invention; Figure 8 It is a cross-sectional view of a rapid cooling zone of a zirconia high-temperature tunnel kiln of the present invention; Figure 9 It is a schematic installation effect diagram of an anti-impact device of a zirconia high-temperature tunnel kiln of the present invention; Figure 10 It is a front view of an anti-impact device of a zirconia high-temperature tunnel kiln of the present invention; Figure 11 It is a schematic structure diagram of a fixed box of a zirconia high-temperature tunnel kiln of the present invention; Figure 12 It is a schematic operation principle diagram of an auxiliary baffle of a zirconia high-temperature tunnel kiln of the present invention; Figure 13 It is of the present invention Figure 9 An enlarged view of A in it.

[0022] The reference numerals in the drawings are: 1 - firing zone; 11 - preheating zone; 12 - high-temperature zone; 13 - auxiliary baffle; 14 - wall; 2 - transfer device; 21 - connection box; 22 - heat insulation part; 23 - transfer disc; 24 - push-pull device; 241 - linear drive device; 242 - tail plate; 243 - support seat; 244 - clamping block; 245 - support plate; 25 - reversing disc; 251 - installation groove; 252 - clamping part; 253 - elastic member; 254 - main shaft; 255 - torsion clamping block; 26 - limiting part; 27 - track; 28 - fixed disc; 281 - slideway; 282 - bayonet; 3 - rapid cooling zone; 31 - blowing part; 32 - air suction part; 33 - water cooling device; 34 - deflector; 4 - slow cooling zone; 5 - Impact prevention device; 51 - Chain; 52 - Contact block; 53 - Stop block; 54 - Buckle plate; 55 - Steel wire rope; 56 - Slide bar; 57 - Fixed box; 58 - Spring; 6 - Kiln car. Detailed implementation manner

[0023] To make the purpose, technical solution and advantages of the implementation of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end; the described embodiments are part of the embodiments of the present invention, not all of the embodiments; the embodiments described below with reference to the accompanying drawings and directional terms are all exemplary and are intended to explain the present invention and should not be construed as a limitation of the present invention; based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The embodiments of the present invention will be described in detail below with reference to the accompanying drawings: Embodiment 1 As Figure 1 shown, it includes: a firing area 1, a transfer device 2, a rapid cooling area 3 and a slow cooling area 4. The firing area 1 is sequentially provided with a preheating area 11 and a high-temperature area 12 from front to back. A transfer device 2 for transporting the kiln car 6 in different directions is provided at the rear end of the high-temperature area 12. The rapid cooling area 3 and the slow cooling area 4 are respectively provided on both sides of the transfer device 2.

[0024] As Figure 2 , Figure 3 , Figure 4 and Figure 5As shown in the figure, the transfer device 2 includes: a connection box body 21, a heat insulation part 22, a transfer tray 23, a push-pull device 24, a reversing disc 25 and a fixed disc 28. The connection box body 21 is arranged behind the high-temperature area 12. Heat insulation parts 22 are provided at the joints of the connection box body 21 with the high-temperature area 12, the rapid cooling area 3 and the slow cooling area 4. The heat insulation part 22 is a cloth structure made of heat insulation material. A hydraulic rod is provided at the top of the heat insulation part 22. By pushing and pulling the hydraulic rod, two pieces of heat insulation material can be pulled apart to both sides or closed towards the middle. The transfer tray 23 is arranged inside the connection box body 21. A motor is provided at the lower part of the transfer tray 23. A cavity is formed on the ground at the lower part of the transfer tray 23, so that the motor can be placed in the cavity, and a ventilation and cooling device can be placed in the cavity. The motor drives the kiln car 6 on the transfer tray 23 to rotate. The push-pull device 24 is fixedly connected to the transfer tray 23. The reversing disc 25 is rotatably connected to the telescopic end of the push-pull device 24. The fixed disc 28 is fixedly connected to the bottom of the kiln car 6 and connected to the reversing disc 25.

[0025] As Figure 2 , Figure 3 , Figure 4 and Figure 5 shown in the figure, the push-pull device 24 includes: a linear drive device 241, a tail plate 242, a support seat 243, a clamping block 244 and a support plate 245. The tail plate 242 is fixedly connected to the transfer tray 23 by welding. The linear drive device 241 can adopt hydraulic, electric, etc. One end of the linear drive device 241 is fixedly connected to the tail plate 242 by bolt connection. An up-and-down through hole is formed at the other end of the linear drive device 241. The reversing disc 25 is rotatably connected to the hole through a bearing. The support seat 243 is supported and arranged at the lower part of the linear drive device 241. Both sides of the clamping block 244 are fixedly connected with support plates 245 by welding. The clamping block 244 covers the upper part of the linear drive device 241. The support plate 245 is fixedly connected to the transfer tray 23 by bolt connection. When the telescopic end of the linear drive device 241 moves, vibration can be prevented in the above way.

[0026] As Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the commutation disk 25 includes: a mounting groove 251, a clamping portion 252, an elastic member 253, a main shaft 254, and a torsion clamp 255. The bottom of the commutation disk 25 is connected to the main shaft 254 by a key. The main shaft 254 is clamped with the torsion clamp 255. Notches are provided on both sides of the main shaft 254. A motor is provided at the bottom in the same manner as the steering wheel 23. Two mounting grooves 251 are provided at the top of the commutation disk 25. The mounting grooves 251 are on the same axis. A number of elastic members are provided inside the mounting grooves 251. One end of the clamping portion 252 is fixedly connected in the mounting groove 251 and is located above the elastic member 253. One end of the clamping portion 252 close to the edge of the commutation disk 25 is a triangular structure. The orientations of the triangular structures on the two clamping portions 252 are the same. The end of the clamping portion 252 is clamped with the fixed disk 28.

[0027] As Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 shown, the fixed disk 28 includes a slideway 281 and a bayonet 282. An arc-shaped slideway 281 is provided on the surface of the fixed disk 28. Both ends of the slideway 281 penetrate through the side of the fixed disk 28. Bayonets 282 are provided on both sides of the middle of the slideway 281. The two bayonets 282 are on the same axis.

[0028] As Figure 3 shown, the transfer device 2 further includes a limiting portion 26 and a track 27. The track 27 is provided on the transfer disk 23 for the passing of the kiln car 6. The limiting portion 26 is fixedly connected to the track 27. It is used to limit the kiln car 6 to block the inertia.

[0029] As Figure 7 and Figure 8 shown, the rapid cooling zone 3 includes: a blowing portion 31, a suction portion 32, and a water cooling device 33. The blowing portion 31 uses a blower. The suction portion 32 uses a suction fan. The water cooling device 33 is connected to an external cooling water circulation device. A pipeline for the passing of cooling water is provided inside the water cooling device 33. The blowing portion 31 is installed at the lower part of the rapid cooling zone 3. The water cooling device 33 is installed on the side wall and the top wall of the rapid cooling zone 3. The suction portion 32 is installed at the upper part of the rapid cooling zone 3. The air outlet of the blowing portion 31 uses a small-diameter outlet. A number of outlets are provided on the blowing portion 31. The area of the air blown out can be reduced through the small-diameter outlet to increase the wind speed.

[0030] As Figure 7 and Figure 8As shown, it further includes a deflector plate 34. There are several deflector plates 34, and the several deflector plates 34 are fixedly connected to the water-cooling device 33 on the side wall, and a water-cooling pipe is arranged inside. The deflector plate 34 is vertically installed on the side of the water-cooling device 33, and a pipe for cooling water to pass through is arranged inside, and it is also connected to the cooling water circulation device outside the tunnel kiln.

[0031] As Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown, it further includes an anti-impact device 5, and the anti-impact device 5 is fixedly connected to the chain 51 of the gear-chain system for driving the movement of the kiln car.

[0032] The anti-impact device 5 includes: a butting block 52, a stop block 52, a buckle plate 54, a steel wire rope 55, a sliding rod 56, a fixed box 57 and a spring 58. The butting block 52 is fixedly connected to the chain 51 by welding, and the stop block 52 is fixedly connected to the bottom of the kiln car 6 by welding. The stop block 52 is a long strip-shaped frame structure, and the buckle plate 54 is a right-angled structure. The buckle plate 54 is located inside the frame structure and is rotatably connected to the stop block 52 and the end can cover the butting block 52. Both ends of the buckle plate 54 are connected with a steel wire rope 55. Fixed boxes 57 are fixedly connected to both sides of the kiln car 6 by bolts. A spring 58 is arranged inside the fixed box 57. The sliding rod 56 is slidably connected inside the fixed box 57 and the end extends out of the fixed box 57 and is located above the spring 58. One end of the sliding rod 56 extending out of the fixed box 57 is fixedly connected to the steel wire rope 55. Auxiliary baffle plates 13 are fixedly connected to both side walls 14 of the firing area 1, the rapid cooling area 3 and the slow cooling area 4. The auxiliary baffle plates 13 are upwardly inclined structures in the moving direction of the kiln car 6. The sliding rod 56 is slidably connected to the upper surface of the auxiliary baffle plate 13. When the kiln car is running, the kiln car 6 is driven to run by the butting block 52. When it moves to the auxiliary baffle plate 13, the sliding rod 56 is pulled up, and the sliding rod 56 drives the buckle plate 54 to lift through the steel wire rope 55.

[0033] The principle of an yttria-stabilized zirconia high-temperature tunnel kiln of the present invention is as follows: The sprocket-chain system drives the kiln car 6 to run, and the kiln car 6 is limited by the auxiliary baffle plate 13. When it runs to the end of the firing area 1, the limit on the kiln car 6 is cancelled again by the auxiliary baffle plate 13. The heat insulation part 22 is opened, and after the pushing and pulling device 24 drives the reversing disc 25 to engage with the kiln car 6, the kiln car 6 is pulled onto the transfer disc 23. Subsequently, the heat insulation part 22 is closed, and the transfer disc 23 turns the kiln car 6. Subsequently, the torsion clamp block 255 rotates the reversing disc 25 so that another engaging part 252 abuts against the fixed disc 28, and then the kiln car 6 is pushed into the cooling area. The products inside the tunnel kiln need a certain heating time, so the kiln car 6 runs slowly, and when the transfer disc 23 transfers the kiln car 6, it will not affect the subsequent kiln cars 6.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-temperature zirconia tunnel kiln, characterized in that, Including: A firing area (1), a transfer device (2), a rapid cooling area (3), and a slow cooling area (4). The firing area (1) is sequentially provided with a preheating area (11) and a high-temperature area (12) from front to back. The rear end of the high-temperature area (12) is provided with the transfer device (2) for transporting the kiln car (6) in different directions. The rapid cooling area (3) and the slow cooling area (4) are respectively arranged on both sides of the transfer device (2).

2. The zirconia high-temperature tunnel kiln according to claim 1, characterized in that, The transfer device (2) includes: a connection box body (21), a heat insulation part (22), a transfer disk (23), a push-pull device (24), a reversing disk (25), and a fixed disk (28). The connection box body (21) is arranged behind the high-temperature area (12). Heat insulation parts (22) are arranged at the connections of the connection box body (21) with the high-temperature area (12), the rapid cooling area (3), and the slow cooling area (4). The transfer disk (23) is arranged inside the connection box body (21). The push-pull device (24) is fixedly connected to the transfer disk (23). The reversing disk (25) is rotatably connected to the telescopic end of the push-pull device (24). The fixed disk (28) is fixedly connected to the bottom of the kiln car (6) and is connected to the reversing disk (25).

3. The zirconia high-temperature tunnel kiln according to claim 2, wherein, The push-pull device (24) includes: a linear driving device (241), a tail plate (242), a support seat (243), a clamping block (244), and a support plate (245). The tail plate (242) is fixedly connected to the transfer disk (23). One end of the linear driving device (241) is fixedly connected to the tail plate (242), and the other end is rotatably connected to the reversing disk (25). The support seat (243) is supported under the linear driving device (241). Both sides of the clamping block (244) are fixedly connected with the support plate (245). The clamping block (244) covers the linear driving device (241). The support plate (245) is fixedly connected to the transfer disk (23).

4. A zirconia high-temperature tunnel kiln according to claim 2, characterized in that, The reversing disk (25) includes: an installation groove (251), a clamping part (252), an elastic member (253), a main shaft (254), and a torsion clamping block (255). The bottom of the reversing disk (25) is connected with the main shaft (254). The main shaft (254) is clamped with the torsion clamping block (255). Two installation grooves (251) are opened at the top of the reversing disk (25). A number of elastic members are arranged inside the installation groove (251). One end of the clamping part (252) is fixedly connected inside the installation groove (251) and is located above the elastic member (253). The end of the clamping part (252) is clamped with the fixed disk (28).

5. The zirconia high-temperature tunnel kiln according to claim 2, wherein The fixed disk (28) includes a slideway (281) and a bayonet (282). An arc-shaped slideway (281) is provided on the surface of the fixed disk (28). Both ends of the slideway (281) penetrate through the side of the fixed disk (28), and the bayonets (282) are provided on both sides of the middle part of the slideway (281).

6. The zirconia high-temperature tunnel kiln according to claim 2, wherein, The transfer device (2) further includes a limiting part (26) and a track (27). The track (27) is provided on the transfer disk (23), and the limiting part (26) is fixedly connected to the track (27).

7. A zirconia high-temperature tunnel kiln according to claim 1, characterized in that, The rapid cooling zone (3) includes: a blowing part (31), a suction part (32), and a water cooling device (33). The blowing part (31) is arranged at the lower part of the rapid cooling zone (3), the water cooling devices (33) are installed on the side wall and the top wall of the rapid cooling zone (3), and the suction part (32) is arranged at the upper part of the rapid cooling zone (3).

8. A zirconia high-temperature tunnel kiln according to claim 7, characterized in that, It further includes a flow guide plate (34). There are several flow guide plates (34). The several flow guide plates (34) are fixedly connected to the water cooling device (33) on the side wall and are internally provided with water cooling pipes.

9. The zirconia high-temperature tunnel kiln according to claim 1, wherein, It further includes an anti-collision device (5). The anti-collision device (5) is fixedly connected to the chain (51) of the gear-chain system for driving the kiln car to move.

10. A zirconia high-temperature tunnel kiln according to claim 9, characterized in that, The anti-collision device (5) includes: a butting block (52), a stop block (52), a buckle plate (54), a steel wire rope (55), a sliding rod (56), a fixed box (57), and a spring (58). The butting block (52) is fixedly connected to the chain (51), the stop block (52) is fixedly connected to the bottom of the kiln car (6), the buckle plate (54) is a right-angled structure, the buckle plate (54) is rotatably connected to the stop block (52) and its end covers the butting block (52), both ends of the buckle plate (54) are connected with the steel wire rope (55), fixed boxes (57) are fixedly connected to both sides of the kiln car (6), the inside of the fixed box (57) is provided with the spring (58), the sliding rod (56) is slidably connected to the inside of the fixed box (57) and is located above the spring (58), the sliding rod (56) is fixedly connected to the steel wire rope (55), and auxiliary baffle plates (13) are fixedly connected to the side walls (14) on both sides of the firing zone (1), the rapid cooling zone (3), and the slow cooling zone (4). The auxiliary baffle plates (13) are in an upward inclined structure in the moving direction of the kiln car (6), and the sliding rod (56) is slidably connected to the upper surface of the auxiliary baffle plate (13).

Images