Sintering furnace for alumina ceramics

Abstract

The utility model relates to the technical field of ceramic sintering furnaces, in particular to a sintering furnace for alumina ceramics, which comprises a furnace body and a furnace cover, a pressure relief opening is arranged at the center of the furnace cover, a main slider is slidably mounted on an inner side panel of the furnace cover, side sliders are slidably connected to the furnace cover on two sides of the main slider respectively, and the side sliders are slidably mounted on the furnace cover. The furnace cover is further in sliding connection with auxiliary sliding blocks on the two sides of the main sliding block respectively, the main sliding block in the middle is in transmission connection with the side sliding blocks on the two sides respectively, pushing blocks are arranged at the ends of the main sliding block and the end of the side sliding block respectively, and a sealing plate is arranged on the furnace cover in a sliding mode. The three pushing blocks simultaneously push the sealing plate to cover the pressure relief opening of the furnace cover, the sealing plate capable of ascending and descending is additionally arranged on the furnace cover, and the sealing plate can provide sealing when the sintering furnace works and can smoothly relieve pressure after the sintering furnace works, so that convenience is provided for subsequent workers to open the furnace body, time is saved, and the production efficiency is improved. And continuous proceeding of subsequent processes is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of ceramic sintering furnaces, in particular to a sintering furnace for alumina ceramics. Background Art

[0002] When using a sintering furnace, the control of the pressure inside the furnace has an important influence on the sintering process of ceramic materials. In some cases, it is necessary to control the pressure inside the furnace to obtain a better sintering effect. However, after sintering is completed, the furnace door cannot be directly opened, mainly because the pressure inside the furnace is too high. In order to open the furnace door smoothly, it is often necessary to wait for the sintering furnace to cool down before operating, and the waiting process takes a long time, which is not conducive to the subsequent sintering work. Therefore, a sintering furnace for alumina ceramics is proposed. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a sintering furnace for alumina ceramics is proposed.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A sintering furnace for alumina ceramics, the sintering furnace includes a furnace body and a furnace cover, the furnace cover is hinged and covers the furnace opening of the furnace body, a through pressure relief opening is provided at the center of the furnace cover, a main slider is slidably installed along the central axis on the inner panel of the furnace cover, side sliders are respectively slidably connected to the symmetric positions on both sides of the main slider, auxiliary sliders are also respectively slidably connected to both sides of the main slider, and a transmission connection is maintained between the middle main slider and the side sliders on both sides.

[0006] In a preferred technical scheme, a straight groove for the main slider to slide and an inclined groove for the side slider to slide are provided along the central axis on the inner plate surface of the furnace cover, and both the straight groove and the inclined groove are radially provided.

[0007] In a preferred technical scheme, auxiliary grooves are provided on the angular bisector of the included angle formed by the straight groove and the inclined groove, the auxiliary grooves on both sides are symmetric, auxiliary sliders are slidably connected in the auxiliary grooves, two connecting rods are hinged on the auxiliary sliders, and the outer ends of the two connecting rods extend outwards and are respectively hinged on the corresponding main slider and side slider on both sides.

[0008] Both the main slider and the side slider face the radial center and push top blocks are respectively provided at their respective ends, a sealing plate is slidably arranged on the furnace cover, and the three push top blocks simultaneously push and push the sealing plate to cover the pressure relief opening of the furnace cover to form a seal.

[0009] In a preferred technical scheme, a cylinder is provided at a position near the bottom edge of the inner plate surface of the furnace cover, and the output end of the cylinder is connected to the main slider.

[0010] In a preferred technical solution, a limiting block is arranged above the pressure relief port on the inner plate surface of the furnace cover. The limiting block is located above the sealing plate, and a guiding column is arranged on the top of the sealing plate. The guiding column slides upward through the limiting block.

[0011] In a preferred technical solution, a sealing layer is arranged on the inner plate surface of the sealing plate. The top edge of the sealing plate is designed to be in a shape that fits the limiting block, and the bottom edge of the sealing plate is designed to be a plane that matches the three pushing blocks.

[0012] The beneficial effects of the present utility model are as follows:

[0013] Through the sintering furnace proposed by this solution, the problem that the sintering furnace cannot be easily opened due to excessive internal pressure is solved. A seal plate that can move up and down is added to the furnace cover. This seal plate can provide sealing during the operation of the sintering furnace and can also relieve pressure smoothly after the sintering furnace has completed its operation, thus providing convenience for subsequent workers to open the furnace body, saving a large amount of time, and ensuring the continuous progress of subsequent processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the overall sintering furnace proposed by the present utility model;

[0015] Figure 2 It is a schematic structural diagram of the pressure relief mechanism on the furnace cover proposed by the present utility model;

[0016] Figure 3 It is a schematic diagram of the position and structure of the seal plate on the furnace cover proposed by the present utility model.

[0017] In the figure: 1, furnace body; 2, furnace cover; 3, pressure relief port; 4, straight groove; 5, inclined groove; 6, auxiliary groove; 7, main slider; 8, side slider; 9, pushing block; 10, auxiliary slider; 11, connecting rod; 12, seal plate; 13, limiting block; 14, guiding column. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0019] In this embodiment, referring to Figures 1-3 , a sintering furnace for alumina ceramics, the sintering furnace includes a furnace body 1 and a furnace cover 2. The furnace cover 2 is hinged and covers the furnace opening of the furnace body 1.

[0020] A through pressure relief port 3 is opened at the center of the furnace cover 2. A main slider 7 is slidably installed along the central axis on the inner panel of the furnace cover 2. Side sliders 8 are respectively slidably connected to the furnace cover 2 at symmetric positions on both sides of the main slider 7. Auxiliary sliders 10 are also respectively slidably connected to the furnace cover 2 on both sides of the main slider 7.

[0021] Combined with the attached Figure 3 , a straight groove 4 for the main slider 7 to slide and an inclined groove 5 for the side slider 8 to slide are opened along the central axis on the inner plate surface of the furnace cover 2. Both the straight groove 4 and the inclined groove 5 are radially opened. An auxiliary groove 6 is opened on the angular bisector of the included angle formed by the straight groove 4 and the inclined groove 5. The auxiliary grooves 6 on both sides are symmetric. An auxiliary slider 10 is slidably connected in the auxiliary groove 6. Two connecting rods 11 are hinged on the auxiliary slider 10. The outer ends of the two connecting rods 11 extend outwards and are respectively hinged on the corresponding main slider 7 and side slider 8 on both sides.

[0022] Both the main slider 7 and the side slider 8 face the radial center and push blocks 9 are respectively arranged at their respective ends. A cylinder 15 is arranged at a position on the inner plate surface of the furnace cover 2 close to the bottom edge. The output end of the cylinder 15 is connected to the main slider 7. Through the pushing control of the cylinder 15, the purpose of moving the main slider 7 back and forth is achieved.

[0023] A sealing plate 12 is slidably arranged on the furnace cover 2. The three push blocks 9 push forward simultaneously and push the sealing plate 12 to cover the pressure relief port 3 of the furnace cover 2 to form a seal. Here, on the one hand, the main slider 7 mainly serves to push the sealing plate 12 to slide up and down, and on the other hand, it can also serve to support the sealing plate 12 to prevent the sealing plate 12 from falling off.

[0024] A limiting block 13 is arranged on the inner plate surface of the furnace cover 2 above its pressure relief port 3. The limiting block 13 is above the sealing plate 12. A guiding column 14 is arranged at the top of the sealing plate 12. The guiding column 14 slides upwards through the limiting block 13. Through the pushing control of the cylinder 15, the main slider 7 can push the sealing plate 12 to move upwards. The design of the guiding column 14 can ensure that the sealing plate 12 moves in a straight line.

[0025] A sealing layer is arranged on the inner plate surface of the sealing plate 12. The sealing layer can be selected from polytetrafluoroethylene material or ceramic thin plate thermal insulation and decoration integrated board material, so that the sealing plate 12 can have good heat insulation performance.

[0026] Finally, the top edge of the sealing plate 12 is designed to be in a shape that fits the limiting block 13, and the bottom edge of the sealing plate 12 is designed to be a plane that matches the three push blocks 9.

[0027] After closing the furnace lid 2, the staff starts the built-in cylinder 15 to control the main slider 7 to move upward. Through the connecting rod 11 on the two auxiliary sliders 10, the side sliders 8 on both sides are driven to slide obliquely upward synchronously, so that the sealing plate 12 can be pushed to cover the pressure relief port 3 to form a sealed furnace cavity. After the sintering furnace finishes working, the staff can control the start of the built-in cylinder 15 to make the main slider 7 move downward, and the side sliders 8 on both sides move downward synchronously, then the sealing plate 12 automatically drops downward and gradually disengages from the pressure relief port 3 to release the pressure and heat in the furnace. After the pressure drops, the furnace lid 2 can be easily opened. It should be added that the bottom of the sealing plate 12 can be directly connected to the pushing block 9 on the main slider 7, so that during the process of the cylinder 15 controlling the main slider 7 to move forward or backward, the sealing plate 12 can move synchronously, and then quickly open and close the pressure relief port 3.

[0028] As described above, it is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A sintering furnace for alumina ceramics, the sintering furnace comprising a furnace body (1) and a furnace cover (2), the furnace cover (2) being hingedly connected to and covering the furnace opening of the furnace body (1), characterized in that: A through pressure relief port (3) is provided at the center of the furnace cover (2); a main slider (7) is slidably mounted on the inner panel of the furnace cover (2) along the central axis; the furnace cover (2) is slidably connected to side sliders (8) at symmetrical positions on both sides of the main slider (7); the furnace cover (2) is also slidably connected to auxiliary sliders (10) on both sides of the main slider (7); a transmission connection is maintained between the middle main slider (7) and the side sliders (8) on both sides; the main slider (7) and the side sliders (8) are both oriented toward the radial center and are respectively provided with push-out blocks (9) at their ends; a sealing plate (12) is slidably provided on the furnace cover (2); three push-out blocks (9) simultaneously push and push the sealing plate (12) to close on the pressure relief port (3) of the furnace cover (2) to form a seal.

2. A sintering furnace for alumina ceramics according to claim 1, characterized in that: The inner plate surface of the furnace cover (2) is provided with a straight groove (4) for the main slider (7) to slide and an inclined groove (5) for the side slider (8) to slide along the central axis, and the straight groove (4) and the inclined groove (5) are both radially provided.

3. A sintering furnace for alumina ceramics according to claim 2, characterized in that: An auxiliary groove (6) is provided on the bisector of the angle formed by the straight groove (4) and the oblique groove (5), and the auxiliary grooves (6) on both sides maintain a symmetrical relationship. An auxiliary slider (10) is slidably connected in the auxiliary groove (6), and two connecting rods (11) are hinged on the auxiliary slider (10). The outer ends of the two connecting rods (11) extend outward and are respectively hinged on the main slider (7) and the side slider (8) corresponding to the two sides.

4. A sintering furnace for alumina ceramics according to claim 1, characterized in that: A cylinder (15) is provided on the inner side plate surface of the furnace cover (2) near the bottom edge, and the output end of the cylinder (15) is connected to the main slider (7).

5. The sintering furnace for alumina ceramics according to claim 1, characterized in that: A limiting block (13) is provided on the inner plate surface of the furnace cover (2) above the pressure relief port (3), and the limiting block (13) is located above the sealing plate (12).

6. A sintering furnace for alumina ceramics according to claim 5, characterized in that: The inner plate surface of the sealing plate (12) is provided with a sealing layer, the top edge of the sealing plate (12) is designed to be in a shape matching the limiting block (13), and the bottom edge of the sealing plate (12) is designed to be a plane matching the three ejection blocks (9).

7. The sintering furnace for alumina ceramics according to claim 5, characterized in that: A guide column (14) is provided on the top of the sealing plate (12), and the guide column (14) slides upward through the limiting block (13).

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