Sintering furnace for zirconium dioxide production
Patent Information
- Application Number
- CN202522521719.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-27
AI Technical Summary
The doors of existing sintering furnaces are mostly single doors or manually opened and closed, which is cumbersome to operate and prone to misalignment, affecting the sealing performance and leading to a decline in production efficiency and quality.
The automatic opening and closing of the furnace door is achieved by using components such as a drive motor, gears, racks and pinions in the adjustment structure, and the sealing performance is enhanced by sealing rings and rubber gaskets to ensure accurate alignment of the furnace door.
The automated operation of the furnace door has been achieved, which has improved production efficiency, reduced labor costs, and ensured the stability of the sintering process through a multi-seal structure, reducing heat loss and the entry of external air, thus improving production quality.
Smart Images
Figure CN224933235U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of zirconium dioxide production technology, specifically to a sintering furnace for zirconium dioxide production. Background Technology
[0002] Zirconia, with the chemical formula ZrO2, is the main oxide of zirconium. Under normal conditions, it is a white, odorless, and tasteless crystal. It is sparingly soluble in water, hydrochloric acid, and dilute sulfuric acid. It is chemically inert and has properties such as high melting point, high resistivity, high refractive index, and low coefficient of thermal expansion, making it an important high-temperature resistant material, ceramic insulating material, and ceramic opacifier. It is also a major raw material for artificial drilling. A sintering furnace is a specialized device that uses sintering to obtain the required physical, mechanical properties and microstructure of powder compacts. Sintering furnaces are used to dry the slurry on silicon wafers, remove organic components from the slurry, and complete the sintering of aluminum back field and grid lines.
[0003] Existing sintering furnaces mostly use single-leaf doors or manually operated doors, which are not only cumbersome and labor-intensive, but also prone to misalignment during opening and closing, affecting the furnace's sealing performance. Therefore, to solve these problems, improve the efficiency and quality of zirconium dioxide production, and reduce losses, this utility model has been developed. Utility Model Content
[0004] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is as follows: a sintering furnace for zirconium dioxide production, comprising: a sintering furnace body, an adjustment structure fixedly connected to the outer wall of the sintering furnace body, a furnace door structure fixedly connected to the outer wall of the adjustment structure, the adjustment structure including a drive motor, a gear fixedly connected to the output shaft of the drive motor, a first rack and a second rack meshing on the outer wall of the gear, a first connecting rod fixedly connected to the outer wall of the first rack, a second connecting rod fixedly connected to the outer wall of the second rack, and a support frame fixedly connected to the outer wall of the drive motor.
[0005] Preferably, the outer wall of the support frame is fixedly connected to the outer wall of the sintering furnace body, and the outer wall of the gear is rotatably connected to the inner wall of the sintering furnace body.
[0006] Preferably, the furnace door structure is symmetrically provided with door frames, and the outer wall of the door frames is fixedly connected with a fixing bracket and a sealing ring.
[0007] Preferably, a rubber pad is fixedly connected to the bottom of the gantry, an insulation board is fixedly connected to the inner wall of the sealing ring, and the outer wall of the fixing frame is fixedly connected to the outer walls of the first connecting rod and the second connecting rod respectively.
[0008] Preferably, the outer wall of the sintering furnace body has two rack grooves, and the outer walls of the first rack and the second rack are slidably connected to the outer walls of the rack grooves.
[0009] Preferably, the outer wall of the sintering furnace body is symmetrically provided with door panel grooves, and the outer wall of the door panel grooves is slidably connected to the outer wall of the door frame.
[0010] The beneficial effects of this utility model are as follows: 1. This utility model achieves automatic opening and closing of the furnace door structure by setting an adjustment structure and cooperating with components such as the drive motor, gears, first rack, and second rack in the adjustment structure. Compared with the existing furnace door structure that is manually opened and closed, it eliminates the need for manual operation, simplifies the operation process, saves labor costs, and improves the operating efficiency in the zirconium dioxide production process.
[0011] 2. This utility model, through the design of a furnace door structure, ensures that the sealing ring in the furnace door structure is in close contact with the sintering furnace body when the door frame is closed. The rubber gasket at the bottom of the door frame enhances the bottom sealing performance. At the same time, the edge of the door frame fits snugly against the inner side of the door panel groove. This multi-layer sealing structure effectively prevents heat loss from the furnace and the entry of external air into the furnace, solving the problem of inaccurate furnace door alignment affecting sealing performance in the prior art. It ensures the stable environment required during the zirconia sintering process and reduces production losses caused by poor sealing. Attached Figure Description
[0012] Figure 1 This is the front view of this utility model; Figure 2 This is a schematic diagram of the adjustment structure of this utility model; Figure 3 This is a schematic diagram of the furnace door structure of this utility model; Figure 4 This is a schematic diagram of the sintering furnace body of this utility model.
[0013] In the diagram: 1. Sintering furnace body; 2. Adjustment structure; 3. Furnace door structure; 11. Rack groove; 12. Door panel groove; 21. Drive motor; 22. Gear; 23. First rack; 24. Second rack; 25. Support frame; 26. First connecting rod; 27. Second connecting rod; 31. Door frame; 32. Fixing frame; 33. Rubber pad; 34. Sealing ring; 35. Insulation board. Detailed Implementation
[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose. Example
[0015] Please see Figure 1 - Figure 2 This utility model provides a technical solution: a sintering furnace for zirconium dioxide production, comprising: a sintering furnace body 1, an adjustment structure 2 fixedly connected to the outer wall of the sintering furnace body 1, a furnace door structure 3 fixedly connected to the outer wall of the adjustment structure 2, the adjustment structure 2 including a drive motor 21, a gear 22 fixedly connected to the output shaft of the drive motor 21, a first rack 23 and a second rack 24 meshing with the outer wall of the gear 22, a first connecting rod 26 fixedly connected to the outer wall of the first rack 23, a second connecting rod 27 fixedly connected to the outer wall of the second rack 24, and a support frame 25 fixedly connected to the outer wall of the drive motor 21, the outer wall of the support frame 25 being fixedly connected to the outer wall of the sintering furnace body 1. Next, the outer wall of the gear 22 is rotatably connected to the inner wall of the sintering furnace body 1. The drive motor 21 is started, and the output shaft of the drive motor 21 drives the gear 22 to rotate. The gear 22 meshes with the first rack 23 and the second rack 24. Since the first rack 23 and the second rack 24 are located on both sides of the gear 22, when the gear 22 rotates, it will drive the first rack 23 and the second rack 24 to slide in opposite directions in the rack groove 11. The first rack 23 drives one side of the gantry 31 to move through the first connecting rod 26, and the second rack 24 drives the other side of the gantry 31 to move through the second connecting rod 27. The support frame 25 provides fixed support for the drive motor 21, ensuring that the gear 22 and the rack mesh stably, and realizing the synchronous opening and closing of the furnace door structure 3.
[0016] Please see Figure 3The furnace door structure 3 is symmetrically provided with door frames 31. The outer wall of the door frame 31 is fixedly connected with a fixing bracket 32 and a sealing ring 34. The bottom of the door frame 31 is fixedly connected with a rubber pad 33. The inner wall of the sealing ring 34 is fixedly connected with a heat insulation board 35. The outer wall of the fixing bracket 32 is fixedly connected to the outer walls of the first connecting rod 26 and the second connecting rod 27 respectively. When the furnace door structure 3 is closed by the adjustment structure 2, the two door frames 31 slide along the door panel groove 12 and fit together. The rubber pads 33 at the bottom of the door frame 31 contact each other to enhance the bottom sealing. The fixing bracket 32 firmly connects the door frame 31 with the first connecting rod 26 and the second connecting rod 27 to ensure effective power transmission. The sealing ring 34 is squeezed after the door frame 31 fits together and comes into close contact with the sintering furnace body 1. The heat insulation board 35 reduces heat loss in the furnace and together form a good sealed and heat-insulating environment.
[0017] Please see Figure 4 The outer wall of the sintering furnace body 1 has two rack grooves 11. The outer walls of the first rack 23 and the second rack 24 are slidably connected to the outer walls of the rack grooves 11. The outer wall of the sintering furnace body 1 also has symmetrical door plate grooves 12. The outer walls of the door plate grooves 12 are slidably connected to the outer walls of the gantry 31. The rack grooves 11 of the sintering furnace body 1 provide sliding tracks for the first rack 23 and the second rack 24, restricting their movement direction and ensuring precise meshing with the gear 22. The door plate grooves 12 serve as sliding guides for the gantry 31, keeping the two gantry 31 aligned during opening and closing to avoid misalignment. When the gantry 31 is fully closed, its edge fits against the inner side of the door plate groove 12, further improving the furnace body's sealing performance in conjunction with the sealing ring 34. The structural design of the rack grooves 11 and door plate grooves 12 ensures the overall operational stability.
[0018] Working principle: In operation, the drive motor 21 is started, and its output shaft drives the gear 22 to rotate. The gear 22 meshes with the first rack 23 and the second rack 24. Since the first rack 23 and the second rack 24 are located on opposite sides of the gear 22, the rotation of the gear 22 causes the first rack 23 and the second rack 24 to slide in opposite directions within the rack groove 11. The first rack 23 moves one side of the gantry 31 via the first connecting rod 26, and the second rack 24 moves the other side of the gantry 31 via the second connecting rod 27. The support frame 25 provides fixed support for the drive motor 21, ensuring stable meshing of the gear 22 and the rack, and achieving synchronization of the furnace door structure 3. When the furnace door structure 3 is closed by the adjustment structure 2, the two side door frames 31 slide along the door panel groove 12 and fit together. The rubber pads 33 at the bottom of the door frame 31 contact each other to enhance the bottom sealing. The fixing frame 32 firmly connects the door frame 31 with the first connecting rod 26 and the second connecting rod 27 to ensure effective power transmission. The sealing ring 34 is squeezed after the door frame 31 fits together and comes into close contact with the sintering furnace body 1. The insulation plate 35 reduces heat loss in the furnace and together form a good sealing and heat preservation environment. The rack groove 11 of the sintering furnace body 1 provides a sliding track for the first rack 23 and the second rack 24, restricting their movement direction and ensuring precise meshing with the gear 22. The door panel groove 12 serves as a sliding guide for the door frame 31, ensuring that the two door frames 31 remain aligned during opening and closing to prevent misalignment. When the door frame 31 is fully closed, its edge fits against the inner side of the door panel groove 12, which, together with the sealing ring 34, further enhances the sealing performance of the furnace body. The structural design of the rack groove 11 and the door panel groove 12 ensures the overall operational stability.
[0019] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. A sintering furnace for zirconium dioxide production, comprising a sintering furnace body (1), characterized in that: An adjustment structure (2) is fixedly connected to the outer wall of the sintering furnace body (1), and a furnace door structure (3) is fixedly connected to the outer wall of the adjustment structure (2). The adjustment structure (2) includes a drive motor (21), the output shaft of the drive motor (21) is fixedly connected to a gear (22), the outer wall of the gear (22) is meshed with a first rack (23) and a second rack (24), the outer wall of the first rack (23) is fixedly connected to a first connecting rod (26), the outer wall of the second rack (24) is fixedly connected to a second connecting rod (27), and the outer wall of the drive motor (21) is fixedly connected to a support frame (25).
2. The sintering furnace for zirconium dioxide production according to claim 1, characterized in that: The outer wall of the support frame (25) is fixedly connected to the outer wall of the sintering furnace body (1), and the outer wall of the gear (22) is rotatably connected to the inner wall of the sintering furnace body (1).
3. The sintering furnace for zirconium dioxide production according to claim 1, characterized in that: The furnace door structure (3) is symmetrically provided with a door frame (31), and the outer wall of the door frame (31) is fixedly connected with a fixing frame (32) and a sealing ring (34).
4. A sintering furnace for zirconium dioxide production according to claim 3, characterized in that: A rubber pad (33) is fixedly connected to the bottom of the gantry (31), an insulation board (35) is fixedly connected to the inner wall of the sealing ring (34), and the outer wall of the fixing frame (32) is fixedly connected to the outer walls of the first connecting rod (26) and the second connecting rod (27) respectively.
5. A sintering furnace for zirconium dioxide production according to claim 1, characterized in that: The outer wall of the sintering furnace body (1) has two rack grooves (11), and the outer walls of the first rack (23) and the second rack (24) are slidably connected to the outer walls of the rack grooves (11).
6. A sintering furnace for zirconium dioxide production according to claim 1, characterized in that: The outer wall of the sintering furnace body (1) is symmetrically provided with door panel grooves (12), and the outer wall of the door panel grooves (12) is slidably connected to the outer wall of the door frame (31).