Vacuum sintering furnace for ceramic products

Abstract

The utility model relates to the technical field of ceramic product vacuum sintering furnaces, in particular to a ceramic product vacuum sintering furnace which comprises an operation cabinet body and a circular ring base, the circular ring base is arranged on the upper surface of the operation cabinet body, an operation panel is further arranged on the operation cabinet body, and a machining barrel is arranged on the inner ring of the circular ring base. An observation plate is installed on the machining barrel, a round cover is arranged on the section of the upper end of the machining barrel, the round cover and the machining barrel are installed in a sliding mode, a pressurizing device is arranged on the upper surface of the round cover, and the pressurizing device and the round cover are fixed through an inclined block. According to the equipment, the graphite flake is heated through joule, so that the ceramic part is rapidly heated, the temperature is rapidly increased, the sintering quality and the sintering speed can be well guaranteed, the equipment is further provided with a structure for a round cover, and a speed reduction structure and a protection structure are arranged on the equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum sintering furnaces for ceramic products, and particularly relates to a vacuum sintering furnace for ceramic products. Background Art

[0002] Laboratory ceramic sintering furnaces are devices used for sintering ceramic materials, usually used in laboratories. They can provide a high-temperature environment to cause physical and chemical changes in ceramic materials, thereby realizing the sintering process. There are many types of laboratory ceramic sintering furnaces. The following are some common types: Box furnace: This is a common laboratory ceramic sintering furnace, characterized by a simple structure and convenient operation. It usually consists of a furnace body, heating elements, a temperature control system, etc., and can carry out sintering within a certain temperature range. Tube furnace: The furnace chamber of the tube furnace is tubular and can be used for atmosphere protection sintering or vacuum sintering of ceramic materials. It has good temperature uniformity and controllability. Vacuum furnace: A vacuum furnace can carry out sintering in a vacuum environment to avoid oxidation or pollution of ceramic materials during the sintering process. It is usually used for sintering high-purity ceramic materials.

[0003] Existing ceramic sintering furnaces need to carry out sintering at high temperatures for a long time, so inevitably there will be loss of volatile elements, thereby reducing the quality of ceramic parts. Moreover, in the laboratory, the pursuit is for individual rapid and high-quality requirements, so a sintering furnace for rapid sintering of individual ceramic parts is needed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a vacuum sintering furnace for ceramic products to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A vacuum sintering furnace for ceramic products, comprising: an operation cabinet main body and a circular base. The circular base is arranged on the upper surface of the operation cabinet main body. An operation panel is also arranged on the operation cabinet main body. A processing cylinder is arranged at the inner ring of the circular base. An observation plate is arranged and installed on the processing cylinder. A circular cover is arranged at the cross-section of the upper end of the processing cylinder. The circular cover and the processing cylinder are in a sliding installation relationship. A pressurizing device is arranged on the upper surface of the circular cover. The pressurizing device and the circular cover are fixed through an inclined block.

[0006] Preferably, a conductive tube is arranged on the lower surface of the circular cover, and a cylindrical conductive head is connected to the lower surface of the conductive tube.

[0007] Preferably, a power supply line is connected to the rod body of the conductive tube, and the power supply line also penetrates through the round cover. The other end of the power supply line is connected to a power supply box. A voltage reduction device is also provided through the upper surface of the round cover. A support rod is arranged inside the processing cylinder, and the support rod is fixedly connected to the processing cylinder. Positioning rods are arranged on both sides of the support rod. A pair of the positioning rods are symmetrical, and the positioning rods are also in a fixed relationship with the processing cylinder. A sintered part is arranged above the support rod, and graphite sheets are arranged on both the upper surface and the lower surface of the sintered part.

[0008] Preferably, a pair of symmetrical cylindrical rods are arranged on the upper surface of the main body of the operation cabinet. The upper surfaces of the pair of cylindrical rods are connected to the same placement ring. A deceleration device is also arranged on the upper surface of the main body of the operation cabinet.

[0009] Preferably, the deceleration device includes: a cylindrical cylinder. A piston plate is arranged inside the cylindrical cylinder, and a sealing ring is arranged on the arc surface of the piston plate. A lifting rod is arranged on the upper surface of the piston plate. The rod body of the lifting rod also penetrates through the top cover of the cylindrical cylinder, and the lifting rod is in a sliding connection relationship with the cylindrical cylinder. An adjusting cylinder is arranged on one side of the cylindrical cylinder.

[0010] Preferably, a connecting flow pipe is arranged between the adjusting cylinder and the cylindrical cylinder, and the flow pipe penetrates through the cylindrical cylinder and the adjusting cylinder. A lifting plate is arranged inside the adjusting cylinder. A pair of guide rods are arranged inside the adjusting cylinder, and the guide rods penetrate through the lifting plate. A rectangular frame is arranged directly above the adjusting cylinder, and the rectangular frame is connected to the adjusting cylinder through an air pipe.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The structure of the present new utility model is reasonable. The device uses Joule heating of the graphite sheet to quickly heat the ceramic part and rapidly increase the temperature, which can well ensure the quality and speed of sintering. The device is also provided with a structure for the round cover. As is well known, the round cover is equipped with a clamping device and an adjusting device, which greatly increases the weight of the round cover. Generally, the support ring is not provided with a deceleration device, and the device is provided with a speed reduction structure and a protection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0013] Figure 2 It is a schematic diagram of the connection structure at the round cover of the present utility model.

[0014] Figure 3 It is a schematic diagram of the internal structure of the processing cylinder of the present utility model.

[0015] Figure 4This is a schematic structural diagram of the cylindrical rod of the present utility model.

[0016] Figure 5 This is a schematic diagram showing the structure of the deceleration device of the present utility model.

[0017] In the figure: 1. Main body of the operation cabinet; 2. Ring base; 3. Operation panel; 4. Processing cylinder; 5. Observation board; 6. Round cover; 7. Pressurizing device; 8. Tilt block; 9. Conductive tube; 10. Cylindrical conductive head; 11. Power supply wire; 12. Voltage reduction device; 13. Support rod; 14. Positioning rod; 15. Graphite sheet; 16. Cylindrical rod; 17. Placing ring; 18. Deceleration device; 19. Cylindrical barrel; 20. Piston plate; 21. Lifting rod; 22. Adjusting cylinder; 23. Lifting plate; 24. Rectangular frame. Specific embodiments

[0018] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1 to 5 In the present utility model, a technical solution is provided: As shown in Figure 1 and Figure 2 , a vacuum sintering furnace for ceramic products includes a main body 1 of the operation cabinet and a ring base 2. The ring base 2 is provided on the upper surface of the main body 1 of the operation cabinet. The operation panel 3 is also provided on the main body 1 of the operation cabinet. The processing cylinder 4 is provided at the inner ring of the ring base 2. The observation board 5 is installed and opened on the processing cylinder 4. The round cover 6 is provided at the cross-section of the upper end of the processing cylinder 4. The round cover 6 and the processing cylinder 4 are in a sliding installation relationship. The pressurizing device 7 is provided on the upper surface of the round cover 6. The pressurizing device 7 and the round cover 6 are fixed by the tilt block 8.

[0020] As shown in Figure 2 , the conductive tube 9 is provided on the lower surface of the round cover 6, and the cylindrical conductive head 10 is connected to the lower surface of the conductive tube 9.

[0021] As shown in Figure 2 and Figure 3As shown, a power supply line 11 is connected to the rod body of the conductive tube 9, and the power supply line 11 also penetrates through the round cover 6. The other end of the power supply line 11 is connected to a power supply box. A voltage reducing device 12 is also provided through the upper surface of the round cover 6. A support rod 13 is provided inside the processing cylinder 4, and the support rod 13 is fixedly connected to the processing cylinder 4. Positioning rods 14 are provided on both sides of the support rod 13. A pair of positioning rods 14 are symmetrical, and the positioning rods 14 are also fixedly connected to the processing cylinder 4. A sintered part is provided above the support rod 13, and graphite sheets 15 are provided on both the upper surface and the lower surface of the sintered part.

[0022] As Figure 1 and Figure 4 shown, a pair of symmetrical cylindrical rods 16 are provided on the upper surface of the operation cabinet main body 1. The upper surfaces of the pair of cylindrical rods 16 are connected to the same placement ring 17. A speed reducing device 18 is also provided on the upper surface of the operation cabinet main body 1.

[0023] As Figure 4 and Figure 5 shown, the speed reducing device 18 includes: a cylindrical barrel 19. A piston plate 20 is provided inside the cylindrical barrel 19. A sealing ring is provided on the arc surface of the piston plate 20. A lifting rod 21 is provided on the upper surface of the piston plate 20. The rod body of the lifting rod 21 also penetrates through the top cover of the cylindrical barrel 19, and the lifting rod 21 is slidably connected to the cylindrical barrel 19. An adjusting barrel 22 is provided on one side of the cylindrical barrel 19. The upper surfaces of a pair of lifting rods 21 are connected to a docking plate. A connecting block is provided on the lower surface of the docking plate, and a docking plate is also provided on the upper surface of the connecting block. A pair of docking plates are symmetrical to each other. For the docking plate away from the speed reducing device 18, a round rod is provided on its lower surface. A limiting ring is provided on the rod body of the round rod. The limiting ring is slidable with the round rod, and the limiting ring is fixedly connected to the placement ring 17. A memory spring is provided on the lower surface of the limiting ring, and the other end of the memory spring is connected to a baffle provided at the end of the round rod.

[0024] As Figure 4 and Figure 5 shown, the adjusting barrel 22 is connected to the cylindrical barrel 19 by a flow-through pipe, and the flow-through pipe penetrates through the cylindrical barrel 19 and the adjusting barrel 22. A lifting plate 23 is provided inside the adjusting barrel 22. A pair of guide rods are provided inside the adjusting barrel 22, and the guide rods penetrate through the lifting plate 23. A rectangular frame 24 is provided directly above the adjusting barrel 22. The rectangular frame 24 is connected to the adjusting barrel 22 through an air pipe. An air pump is provided on the vertical surface of the cabinet main body 1, and a hose is provided on the air pump. The other end of the hose is connected to the rectangular frame 24.

[0025] Working principle: When the device is working, first place the graphite sheet 15 on the upper surface of the support rod 13, then place the part to be sintered on the upper surface of the graphite sheet 15 through the positioning rod 14, then place another graphite sheet on the upper surface of the part, and then pick up the round cover 6 and install it at the cross-section at the upper end of the processing cylinder 4. After installation, the cylindrical conductive head 10 presses the upper graphite sheet, and there is also a conductive head on the support rod 13. Then start the power supply box, and lead the current to the cylindrical conductive head 10 through the power supply wire 11. The Joule heating of the graphite sheet means that by passing an electric current through the graphite sheet, since graphite has a certain resistance, heat will be generated according to Joule's law when the current passes through, thus raising the temperature of the graphite sheet. The expression of Joule's law is Q = I 2 Rt (where Q represents heat, I represents current, R represents resistance, and t represents time). When the current flows through the graphite sheet, its resistance will cause the conversion of electrical energy into heat energy, realizing the heating of the graphite sheet. This method is often used in some cases where specific temperature treatment of the graphite sheet is required or the performance change of the graphite sheet under different temperature conditions is studied, etc. After the ceramic part is processed, remove the round cover and place it on a pair of docking plates. As the round cover 6 is placed in, the lifting rod 21 is pressed down, causing the liquid inside the cylindrical barrel 19 to slowly enter the adjusting barrel 22. At this time, the round cover 6 slowly descends and finally slowly falls onto the placement ring 17.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; 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 for 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 various embodiments of the present invention.

Claims

1. A vacuum sintering furnace for ceramic products, comprising: An operating cabinet body (1) and a circular base (2), characterized in that: a circular base (2) is arranged on the upper surface of the operating cabinet body (1), an operating panel (3) is also arranged on the operating cabinet body (1), a processing cylinder (4) is arranged on the inner ring of the circular base (2), an observation plate (5) is installed on the processing cylinder (4), a circular cover (6) is arranged at the cross section of the upper end of the processing cylinder (4), the circular cover (6) and the processing cylinder (4) are in a sliding installation relationship, a pressurizing device (7) is arranged on the upper surface of the circular cover (6), and the pressurizing device (7) and the circular cover (6) are fixed by a tilting block (8).

2. A vacuum sintering furnace for ceramic products according to claim 1, characterized in that: A conductive tube (9) is provided on the lower surface of the circular cover (6), and a cylindrical conductive head (10) is connected to the lower surface of the conductive tube (9).

3. A vacuum sintering furnace for ceramic products according to claim 2, characterized in that: The rod body of the conductive tube (9) is connected to a power supply line (11), and the power supply line (11) also passes through the round cover (6), and the other end of the power supply line (11) is connected to a power supply box, and a voltage reducing device (12) is also provided on the upper surface of the round cover (6). A support rod (13) is provided inside the processing cylinder (4), and the support rod (13) and the processing cylinder (4) are fixedly connected. Positioning rods (14) are provided on both sides of the support rod (13), and a pair of the positioning rods (14) are symmetrical, and the positioning rods (14) and the processing cylinder (4) are also in a fixed relationship. A sintered part is provided above the support rod (13), and graphite sheets (15) are provided on the upper surface and the lower surface of the sintered part.

4. A vacuum sintering furnace for ceramic products according to claim 1, characterized in that: A pair of symmetrical cylindrical rods (16) are arranged on the upper surface of the operating cabinet body (1), and the upper surfaces of the pair of cylindrical rods (16) are connected to the same placement ring (17). A deceleration device (18) is also arranged on the upper surface of the operating cabinet body (1).

5. A vacuum sintering furnace for ceramic products according to claim 4, characterized in that: The deceleration device (18) comprises: a cylindrical barrel (19), a piston plate (20) is arranged inside the cylindrical barrel (19), and a circle of sealing ring is arranged on the arc surface of the piston plate (20), a lifting rod (21) is arranged on the upper surface of the piston plate (20), the rod body of the lifting rod (21) also penetrates the top cover of the cylindrical barrel (19), and the lifting rod (21) and the cylindrical barrel (19) are in a sliding connection relationship, and an adjustment barrel (22) is arranged on one side of the cylindrical barrel (19).

6. A vacuum sintering furnace for ceramic products according to claim 5, characterized in that: The regulating cylinder (22) is connected to the cylindrical cylinder (19) by a flow pipe, and the flow pipe penetrates the cylindrical cylinder (19) and the regulating cylinder (22). A lifting plate (23) is arranged inside the regulating cylinder (22). A pair of guide rods are arranged inside the regulating cylinder (22), and the guide rods penetrate the lifting plate (23). A rectangular frame (24) is arranged directly above the regulating cylinder (22), and the rectangular frame (24) and the regulating cylinder (22) are connected by a ventilation pipe.

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