High-toughness zirconium oxide toughened ceramic material firing kiln

Abstract

The invention discloses a high-toughness zirconium oxide toughened ceramic material firing kiln, and relates to the technical field of firing kilns. Comprising a furnace body which is rotatably provided with a door plate. A heat insulation box is arranged on the inner side of the furnace body and is of an inverted trapezoidal structure, and the two sides of the heat insulation box are obliquely arranged and form included angles with the inner side of the furnace body. A limiting frame is arranged on the obliquely-arranged side face of the heat insulation box and used for positioning and installing refractory bricks. A mounting box is arranged on the door plate, a maintenance frame is arranged on the inner side of the mounting box in a matched mode, the maintenance frame is also of an inverted trapezoidal structure, and inspection and maintenance mechanisms are arranged on the two sides of the maintenance frame correspondingly and used for conducting defect inspection and brick joint cutting on refractory bricks; a moving mechanism is arranged at the top of the mounting box and used for controlling the maintenance frame to move, and the moving mechanism has a horizontal state and a vertical state; the refractory brick structure can be conveniently maintained and replaced, disassembly and assembly are convenient, and the strength of follow-up maintenance work is relieved.

Description

Technical Field

[0001] This invention relates to the field of firing kiln technology, and in particular to a firing kiln for high-toughness zirconia toughened ceramic materials. Background Technology

[0002] High-toughness zirconia toughened ceramic materials are ceramic materials with excellent mechanical properties, mainly used in fields such as compressive strength, flexural strength, and wear resistance. Zirconia itself has high hardness and heat resistance, but its brittleness limits its engineering applications. To overcome this shortcoming, researchers have developed a technique to toughen zirconia, significantly enhancing its toughness, strength, and durability. Zirconia ceramic materials generally require firing, and various firing kilns exist, some using combustible gases and others using electric heating. Firing kilns have good thermal insulation properties; good insulation materials are used to reduce heat loss and improve energy efficiency. Their internal structure generally uses refractory bricks or other high-temperature resistant materials. Refractory bricks are a commonly used structure in existing firing kilns, but their installation is relatively cumbersome. After adjacent refractory bricks are stacked, they are filled with materials such as refractory mortar, making the refractory bricks a single unit, which increases the intensity of subsequent maintenance work. Based on this, this invention proposes a firing kiln that facilitates the maintenance and replacement of the refractory brick structure, is easy to disassemble and assemble, and reduces the intensity of subsequent maintenance work. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention facilitates the maintenance and replacement of refractory brick structures, making disassembly and assembly convenient and reducing the intensity of subsequent maintenance work.

[0004] The technical solution used in this invention is as follows: a kiln for firing high-toughness zirconia toughened ceramic materials, comprising a kiln body with a door panel rotatably mounted on the kiln body; a heat insulation box with an inverted trapezoidal structure is provided inside the kiln body, the two sides of the heat insulation box being inclined and forming an angle with the inside of the kiln body; a cavity is reserved between the two sides of the heat insulation box and the inside of the kiln body, and a cooling mechanism is provided in the cavity; a limiting frame is provided on the inclined side of the heat insulation box for positioning and installing refractory bricks; an installation box is provided on the door panel, and a partition is provided between the installation box and the door panel for isolating the outside; a maintenance frame is provided inside the installation box, the maintenance frame also having an inverted trapezoidal structure, and inspection and maintenance mechanisms are provided on both sides of the maintenance frame for defect inspection and brick joint cutting of the refractory bricks; a moving mechanism is provided on the top of the installation box for controlling the movement of the maintenance frame, and the moving mechanism has a horizontal state and a vertical state.

[0005] As a preferred embodiment, a heating controller is provided on the top of the furnace body, and an electric heating tube is provided inside the furnace body. The furnace body is used to control the electric heating tube to perform electric heating operations.

[0006] As a preferred embodiment, the cooling mechanism includes cooling pipes arranged in the chamber, a recovery box and a transfer box are provided on the outside of the furnace body, the recovery box is used to recover cooling water, the transfer box is used to transfer cooling water, and the two ends of the cooling pipes are respectively connected to the recovery box and the transfer box.

[0007] As a preferred embodiment, the limiting frame includes positioning rods arranged in a uniform manner, with positioning shafts provided on the positioning rods. The refractory bricks are provided with a mating groove and a mating hole on the side that mates with the positioning rods. The mating groove mates with the positioning rods, and the mating hole mates with the positioning shafts, so that the refractory bricks are arranged in an inclined state on the limiting frame.

[0008] As a preferred embodiment, a partition cylinder is fixedly installed on the mounting box to control the movement of the partition. Fixed electric cylinders are fixedly installed on the top and bottom of the mounting box, and fixed holes are opened on the upper and lower sides of the maintenance frame. The telescopic rod of the fixed electric cylinder cooperates with the fixed holes to fix the maintenance frame. A fixed shaft is provided on the top end face of the maintenance frame, and the fixed shaft cooperates with the moving mechanism to control the movement of the maintenance frame.

[0009] As a preferred embodiment, the inspection and maintenance mechanism includes a motor fixedly mounted on the side of the maintenance frame and a lead screw rotatably mounted on the side of the maintenance frame. The lead screw is driven by the motor and a slide block is slidably mounted on the side of the maintenance frame. The slide block and the lead screw form a helical pair, and a visual inspector is provided on the slide block for inspecting surface defects of the refractory bricks. A laser cutter is used to laser cut the brick joints between adjacent refractory bricks.

[0010] As a preferred embodiment, the moving mechanism includes a deflection moving frame rotatably mounted on the top of the mounting box, and a deflection motor fixedly mounted on the top of the mounting box, the deflection motor being used to drive the deflection moving frame; a second motor is fixedly mounted on the deflection moving frame, and a second lead screw is rotatably mounted on the deflection moving frame, the second lead screw being driven by the second motor, and a second slide block is slidably mounted on the deflection moving frame, the second slide block and the second lead screw forming a helical pair.

[0011] As a preferred embodiment, a movable electric cylinder is fixedly installed on the slide block two, a movable plate is fixedly installed on the telescopic rod of the movable electric cylinder, a mating cylinder is provided at the end of the movable plate, and a mating electric cylinder is fixedly installed at the end of the movable plate. A mating shaft is fixedly installed on the telescopic rod of the mating electric cylinder, and positioning holes are provided on both the mating cylinder and the fixed shaft. The maintenance frame is fixed to the movable plate by mating the mating shaft with the positioning holes.

[0012] The advantages of this invention compared with the prior art are: (1) When no maintenance or inspection work is performed, the moving mechanism is in a vertical state, which can effectively reduce the space occupied; (2) The two sides of the maintenance frame are parallel to the arrangement area of ​​the refractory bricks, which facilitates direct maintenance and inspection; (3) The visual inspector can inspect the surface of the refractory bricks for defects such as cracks and missing pieces; the inspection information is transmitted to the external receiving control system. When it is detected that a certain refractory brick needs to be replaced, the four sides of the brick joints of the brick are cut by the laser cutter, that is, the filling material in the brick joints is removed; (4) The inspection information and cutting information are fed back to the external receiving control system, which can help the operator quickly find the corresponding area and facilitate the quick disassembly and replacement of the refractory bricks, and efficiently complete the maintenance work. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 This is a schematic diagram of the overall structure of the present invention in orthographic projection.

[0015] Figure 3 This is a schematic diagram of the cooling mechanism of the present invention.

[0016] Figure 4 This is a schematic diagram of the installation structure of the limiting frame of the present invention.

[0017] Figure 5 This is a schematic diagram of the installation structure of the mounting box of the present invention.

[0018] Figure 6 This is a schematic diagram of the door panel installation structure of the present invention.

[0019] Figure 7 This is a schematic diagram of the installation structure of the maintenance rack of the present invention.

[0020] Figure 8 This is a schematic diagram of the moving mechanism structure of the present invention.

[0021] Figure 9 This is a schematic diagram of the movable plate structure of the present invention.

[0022] Figure 10 This is a partial structural diagram of the movable plate of the present invention.

[0023] Attached reference numerals: 1-Furnace body; 2-Heating controller; 3-Door panel; 4-Slide table; 5-Insulation box; 7-Electric heating tube; 8-Recovery box; 9-Transfer box; 10-Cooling pipe; 11-Refractory brick; 12-Positioning rod; 13-Positioning shaft; 14-Mounting box; 15-Isolation cylinder; 16-Baffle plate; 17-Fixed electric cylinder; 18-Maintenance frame; 19-Fixed hole; 20-Fixed shaft; 21-Motor one; 22-Lead screw one; 23-Slide one; 24-Visual inspector; 25-Laser cutter; 26-Deflection motor; 27-Deflection moving frame; 28-Motor two; 29-Lead screw two; 30-Slide two; 31-Moving electric cylinder; 32-Moving plate; 33-Matching cylinder; 34-Matching electric cylinder; 35-Matching shaft. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] like Figures 1 to 10 As shown, a kiln for firing high-toughness zirconia toughened ceramic materials includes a furnace body 1, with a door panel 3 rotatably mounted on the furnace body 1; an insulation box 5 is provided inside the furnace body 1, the insulation box 5 has an inverted trapezoidal structure, and the two sides of the insulation box 5 are arranged at an angle to the inside of the furnace body 1; a cavity is reserved between the two sides of the insulation box 5 and the inside of the furnace body 1, and a cooling mechanism is provided in the cavity; a limiting frame is provided on the inclined side of the insulation box 5 for positioning and installing refractory bricks 11; an installation box 14 is provided on the door panel 3, and a partition 16 is provided between the installation box 14 and the door panel 3 for isolating the outside; a maintenance frame 18 is provided inside the installation box 14, the maintenance frame 18 also has an inverted trapezoidal structure, and inspection and maintenance mechanisms are provided on both sides of the maintenance frame 18 for defect inspection and brick joint cutting of the refractory bricks 11; a moving mechanism is provided on the top of the installation box 14 for controlling the movement of the maintenance frame 18, and the moving mechanism has a horizontal state and a vertical state.

[0026] A heating controller 2 is installed on the top of the furnace body 1, and an electric heating tube 7 is installed inside the furnace body 1. The furnace body 1 is used to control the electric heating tube 7 to perform electric heating operations. A slide rail is installed inside the furnace body 1, and a slide table 4 is moved on the slide rail. The cooling mechanism includes a cooling pipe 10 arranged in the chamber. A recovery box 8 and a transfer box 9 are installed on the outside of the furnace body 1. The recovery box 8 is used to recover cooling water, and the transfer box 9 is used to transfer cooling water. The two ends of the cooling pipe 10 are connected to the recovery box 8 and the transfer box 9, respectively.

[0027] The limiting frame includes evenly arranged positioning rods 12, and a positioning shaft 13 is provided on the positioning rods 12. The refractory brick 11 has a mating groove and a mating hole on the side that mates with the positioning rods 12. The mating groove mates with the positioning rods 12, and the mating hole mates with the positioning shaft 13, so that the refractory brick 11 is arranged in an inclined state on the limiting frame.

[0028] A partition cylinder 15 is fixedly installed on the mounting box 14. The partition cylinder 15 is used to control the movement of the partition 16. A fixing electric cylinder 17 is fixedly installed on the top and bottom of the mounting box 14 respectively. Fixing holes 19 are opened on the upper and lower sides of the maintenance frame 18 respectively. The telescopic rod of the fixing electric cylinder 17 cooperates with the fixing holes 19 to fix the maintenance frame 18. A fixing shaft 20 is provided on the top end face of the maintenance frame 18. The fixing shaft 20 cooperates with the moving mechanism to control the movement of the maintenance frame 18.

[0029] The inspection and maintenance mechanism includes a motor 21 fixedly mounted on the side of the maintenance frame 18, and a lead screw 22 rotatably mounted on the side of the maintenance frame 18. The lead screw 22 is driven by the motor 21 and a slide block 23 is slidably mounted on the side of the maintenance frame 18. The slide block 23 and the lead screw 22 form a helical pair, and a visual inspection device 24 is provided on the slide block 23 for inspecting surface defects of the refractory bricks 11. A laser cutter 25 is used to laser cut the brick joints between adjacent refractory bricks 11.

[0030] The moving mechanism includes a deflection moving frame 27 rotatably mounted on the top of the mounting box 14, and a deflection motor 26 fixedly mounted on the top of the mounting box 14. The deflection motor 26 drives the deflection moving frame 27. A second motor 28 is fixedly mounted on the deflection moving frame 27, and a second lead screw 29 is rotatably mounted on it. The second lead screw 29 is driven by the second motor 28. A second slide block 30 is slidably mounted on the deflection moving frame 27. The second slide block 30 and the second lead screw 29 form a helical pair. A moving electric cylinder 31 is fixedly mounted on the second slide block 30. A moving plate 32 is fixedly mounted on the telescopic rod of the moving electric cylinder 31. A mating cylinder 33 is provided at the end of the moving plate 32, and a mating electric cylinder 34 is fixedly mounted at the end of the moving plate 32. A mating shaft 35 is fixedly mounted on the telescopic rod of the mating electric cylinder 34. Positioning holes are provided on both the mating cylinder 33 and the fixed shaft 20. The maintenance frame 18 and the moving plate 32 are fixed by the mating shaft 35 engaging with the positioning holes.

[0031] Operating principle: The refractory bricks 11 are arranged at an angle on the limiting frame to improve stability; the door panel 3 is closed for firing operations; when no maintenance or inspection work is being performed, the moving mechanism is in a vertical position, which can effectively reduce the space occupied; when maintenance or inspection work is being performed, the deflection motor 26 controls the deflection moving frame 27 to flip to a horizontal position, the isolation cylinder 15 controls the fixed electric cylinder 17 to move, and connects to the outside; the second motor 28 drives the second lead screw 29 to rotate, causing the second slide 30 to move, the moving electric cylinder 31 controls the moving plate 32 to move, so that the mating cylinder 33 engages with the fixed shaft 20, the fixed electric cylinder 17 releases the fixation of the maintenance frame 18, and the mating electric cylinder 34 controls the mating shaft 35 to engage with the positioning hole, so that the maintenance frame 18 is fixed at the end of the moving plate 32.

[0032] The slide 20 moves to transfer the maintenance frame 18 into the furnace body 1, with the two sides of the maintenance frame 18 parallel to the arrangement area of ​​the refractory bricks 11. The motor 21 drives the lead screw 22 to rotate, causing the slide 23 to move. The visual inspector 24 can inspect the surface of the refractory bricks for defects such as breakage and missing pieces. The inspection information is transmitted to the external receiving and control system. When a refractory brick is detected to need to be replaced, the laser cutter 25 cuts the brick joints on all four sides of the brick, removing the filler in the joints. The inspection and cutting information are fed back to the external receiving and control system, which helps the operator quickly locate the corresponding area and facilitates the rapid disassembly and replacement of the refractory bricks 11, thus efficiently completing the maintenance work.

[0033] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A kiln for firing high-toughness zirconia toughened ceramic materials, comprising a kiln body (1), wherein a door panel (3) is rotatably disposed on the kiln body (1); characterized in that: An insulation box (5) is provided inside the furnace body (1). The insulation box (5) has an inverted trapezoidal structure. The two sides of the insulation box (5) are arranged at an angle and form an angle with the inside of the furnace body (1). A cavity is reserved between the two sides of the insulation box (5) and the inside of the furnace body (1). A cooling mechanism is provided in the cavity. A limiting frame is provided on the inclined side of the insulation box (5) for positioning and installing refractory bricks (11). An installation box (14) is provided on the door panel (3). A partition (16) is provided between the refractory brick (11) and the door panel (3) to isolate the outside world; a maintenance frame (18) is provided inside the installation box (14), and the maintenance frame (18) is also in the shape of an inverted trapezoid. Inspection and maintenance mechanisms are provided on both sides of the maintenance frame (18) to inspect the refractory brick (11) for defects and cut the brick joints; a moving mechanism is provided on the top of the installation box (14) to control the movement of the maintenance frame (18). The moving mechanism has a horizontal state and a vertical state.

2. The kiln for firing high-toughness zirconia toughened ceramic materials according to claim 1, characterized in that: The furnace body (1) is equipped with a heating controller (2) on the top and an electric heating tube (7) is installed inside the furnace body (1). The furnace body (1) is used to control the electric heating tube (7) to perform electric heating operations.

3. The kiln for firing high-toughness zirconia toughened ceramic materials according to claim 1, characterized in that: The cooling mechanism includes a cooling pipe (10) arranged in the chamber. A recovery box (8) and a transmission box (9) are provided on the outside of the furnace body (1). The recovery box (8) is used to recover cooling water, and the transmission box (9) is used to transmit cooling water. The two ends of the cooling pipe (10) are connected to the recovery box (8) and the transmission box (9) respectively.

4. The kiln for firing high-toughness zirconia toughened ceramic materials according to claim 1, characterized in that: The limiting frame includes a positioning rod (12) arranged in a uniform manner. A positioning shaft (13) is provided on the positioning rod (12). A mating groove and a mating hole are provided on the side of the refractory brick (11) that mates with the positioning rod (12). The mating groove mates with the positioning rod (12), and the mating hole mates with the positioning shaft (13), so that the refractory brick (11) is arranged on the limiting frame in an inclined state.

5. The kiln for firing high-toughness zirconia toughened ceramic materials according to claim 1, characterized in that: A partition cylinder (15) is fixedly installed on the mounting box (14). The partition cylinder (15) is used to control the movement of the partition (16). A fixed electric cylinder (17) is fixedly installed on the top and bottom of the mounting box (14). Fixed holes (19) are opened on the upper and lower sides of the maintenance frame (18). The telescopic rod of the fixed electric cylinder (17) cooperates with the fixed hole (19) to fix the maintenance frame (18). A fixed shaft (20) is provided on the top end face of the maintenance frame (18). The fixed shaft (20) cooperates with the moving mechanism to control the movement of the maintenance frame (18).

6. The kiln for firing high-toughness zirconia toughened ceramic materials according to claim 1, characterized in that: The inspection and maintenance mechanism includes a motor (21) fixedly installed on the side of the maintenance frame (18) and a lead screw (22) rotatably installed on the side of the maintenance frame (18). The lead screw (22) is driven by the motor (21). A slide block (23) is slidably installed on the side of the maintenance frame (18). The slide block (23) and the lead screw (22) form a helical pair. A visual inspector (24) is installed on the slide block (23) for inspecting surface defects of the refractory bricks (11). A laser cutter (25) is used to laser cut the brick joints between adjacent refractory bricks (11).

7. The kiln for firing high-toughness zirconia toughened ceramic materials according to claim 5, characterized in that: The moving mechanism includes a deflection moving frame (27) rotatably mounted on the top of the mounting box (14) and a deflection motor (26) fixedly mounted on the top of the mounting box (14). The deflection motor (26) is used to drive the deflection moving frame (27). A second motor (28) is fixedly mounted on the deflection moving frame (27), and a second lead screw (29) is rotatably mounted on it. The second lead screw (29) is driven by the second motor (28). A second slide block (30) is slidably mounted on the deflection moving frame (27). The second slide block (30) and the second lead screw (29) form a screw pair.

8. The kiln for firing high-toughness zirconia toughened ceramic materials according to claim 7, characterized in that: A movable electric cylinder (31) is fixedly installed on the slide block two (30). A movable plate (32) is fixedly installed on the telescopic rod of the movable electric cylinder (31). A mating cylinder (33) is provided at the end of the movable plate (32), and a mating electric cylinder (34) is fixedly installed at the end of the movable plate (32). A mating shaft (35) is fixedly installed on the telescopic rod of the mating electric cylinder (34). Positioning holes are provided on both the mating cylinder (33) and the fixed shaft (20). The maintenance frame (18) is fixed to the movable plate (32) by mating the mating shaft (35) with the positioning holes.

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