Heating device for melting and sintering zirconium oxide

Abstract

The utility model discloses a heating device for melting and sintering zirconium oxide, which belongs to the technical field of heating equipment.The heating device for melting and sintering zirconium oxide comprises a hearth, one side of the hearth is fixedly connected with a mounting seat, a hydraulic cylinder is vertically mounted at the top of the mounting seat, a lifting frame is arranged at the top end of the hydraulic cylinder, and the top end of the lifting frame is provided with a lifting rod. A sealing furnace cover is arranged at an opening in the top of the hearth, the sealing furnace cover is fixed to the bottom of the lifting frame, a heating cavity is formed in the side wall of the hearth, a high-frequency induction coil is arranged in the heating cavity, and a resistance heating body is vertically installed in the center of the inner bottom wall of the hearth; the high-frequency induction coil can be arranged in the heating cavity in the side wall of the hearth and matched with the resistance heating body in the center of the interior of the hearth to form induction and radiation dual-mode heating, rapid temperature rise is achieved through induction heating, high-temperature stability is maintained through resistance heating, and the zirconium oxide melting and sintering efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, and more specifically, to a heating device for zirconia melting and sintering. Background Technology

[0002] Zirconia is a high-performance inorganic non-metallic material that is widely used in dental restoration, biomedicine, aerospace and industrial fields.

[0003] Currently, the melting and sintering of zirconia requires a high temperature of 1600-2000℃. Existing heating devices mainly rely on a single resistance heating mode for melting and sintering. The heating rate of the resistance heating element is often slow, resulting in low melting and sintering efficiency of zirconia. At the same time, traditional heating devices usually require manual opening of the cover, and manual intervention is needed when sintering abnormalities occur inside the device. The high-temperature environment of the device also poses certain safety hazards. Therefore, in view of this, we have studied and improved the existing structure to provide a heating device for the melting and sintering of zirconia, in order to achieve a more practical purpose. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a heating device for zirconia melting and sintering. It can set a high-frequency induction coil in the heating chamber inside the furnace side wall, and cooperate with the resistance heating element in the center of the furnace to form a dual-mode heating of induction and radiation. Induction heating is used to achieve rapid temperature rise, while resistance heating maintains high temperature stability, which greatly improves the efficiency of zirconia melting and sintering. At the same time, the addition of a hydraulic cylinder and lifting frame can realize the automatic opening and closing of the sealed furnace cover, improving the safety performance of the device.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A heating device for zirconia melting and sintering includes a furnace chamber, a mounting base fixedly connected to one side of the furnace chamber, a hydraulic cylinder vertically mounted on the top of the mounting base, a lifting frame provided at the top of the hydraulic cylinder, a sealing furnace cover provided at the top opening of the furnace chamber, the sealing furnace cover being fixed to the bottom of the lifting frame, a heating chamber formed in the side wall of the furnace chamber, a high-frequency induction coil provided inside the heating chamber, a resistance heating element vertically mounted at the center of the inner bottom wall of the furnace chamber, and an inner barrel provided inside the furnace chamber.

[0009] Furthermore, the high-frequency induction coil has a spiral copper tube structure, and a water-cooling channel is provided inside the high-frequency induction coil.

[0010] Furthermore, both ends of the high-frequency induction coil extend to the outside of the furnace and are respectively fixedly connected to a water inlet and a water outlet.

[0011] Furthermore, each of the two extended ends of the high-frequency induction coil is fixedly connected with a terminal block.

[0012] Furthermore, the lifting frame includes a support arm fixed to the top output end of the hydraulic cylinder, one end of the support arm is fixedly connected to a mounting bracket, and the sealed furnace cover is fixed to the bottom of the mounting bracket.

[0013] Furthermore, the resistance heating element is embedded in a heat-conducting sleeve fixedly connected to the center of the bottom wall of the inner barrel, and the resistance heating element is embedded inside the heat-conducting sleeve.

[0014] 3. Beneficial Effects

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] (1) In this scheme, a high-frequency induction coil is set in the heating chamber inside the side wall of the furnace, and a resistance heating element is set in the center of the furnace to form a dual-mode heating of induction and radiation. Induction heating is used to achieve rapid heating, while resistance heating maintains high temperature stability, which greatly improves the efficiency of zirconia melting and sintering.

[0017] (2) This scheme, by adding hydraulic cylinders and lifting frames, can realize the automatic opening and closing of the sealed furnace cover. When sintering abnormalities occur inside the device, there is no need to manually open the cover, which greatly improves the safety performance of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 This is a side view of the structural plan of this utility model;

[0021] Figure 4 This is a schematic diagram of the position and structure of the high-frequency induction coil of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. Furnace chamber;

[0024] 2. Mounting bracket;

[0025] 3. Hydraulic cylinder;

[0026] 4. Lifting frame; 401. Support arm; 402. Mounting frame;

[0027] 5. Seal the furnace lid;

[0028] 6. Heating chamber;

[0029] 7. High-frequency induction coil;

[0030] 8. Resistance heating element;

[0031] 9. Inner tub;

[0032] 10. Water inlet interface;

[0033] 11. Water outlet;

[0034] 12. Wiring terminals;

[0035] 13. Heat-conducting sleeve. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0037] Example:

[0038] Please see Figures 1-4 A heating device for zirconia melting and sintering includes a furnace chamber 1, a mounting base 2 fixedly connected to one side of the furnace chamber 1, a hydraulic cylinder 3 vertically mounted on the top of the mounting base 2, a lifting frame 4 provided at the top of the hydraulic cylinder 3, a sealing furnace cover 5 provided at the top opening of the furnace chamber 1, the sealing furnace cover 5 fixed to the bottom of the lifting frame 4, a heating chamber 6 opened in the side wall of the furnace chamber 1, a high-frequency induction coil 7 provided inside the heating chamber 6, a resistance heating element 8 vertically mounted at the center of the inner bottom wall of the furnace chamber 1, and an inner barrel 9 provided inside the furnace chamber 1.

[0039] See Figure 4 The high-frequency induction coil 7 has a spiral copper tube structure and a water-cooling channel is provided inside the high-frequency induction coil 7.

[0040] See Figure 2 Both ends of the high-frequency induction coil 7 extend to the outside of the furnace chamber 1 and are respectively fixedly connected to the water inlet 10 and the water outlet 11.

[0041] See Figure 4Both extended ends of the high-frequency induction coil 7 are fixedly connected to terminals 12.

[0042] See Figure 1 The lifting frame 4 includes a support arm 401 fixed to the top output end of the hydraulic cylinder 3. One end of the support arm 401 is fixedly connected to a mounting frame 402, and the sealed furnace cover 5 is fixed to the bottom of the mounting frame 402.

[0043] See Figure 2 The resistance heating element 8 is embedded in the center of the bottom wall of the inner barrel 9, and a heat-conducting sleeve 13 is fixedly connected thereto. The resistance heating element 8 is embedded inside the heat-conducting sleeve 13.

[0044] In use: Place the zirconia raw material into the inner barrel 9, then connect the high-frequency induction coil 7 in the heating chamber 6 located in the side wall of the furnace 1 to an external power source through the terminal 12, and also connect the resistance heating element 8 located in the center of the furnace 1 to the power source. The high-frequency induction coil 7 and the resistance heating element 8 work together to form a dual-mode heating of induction and radiation. Induction heating is used to achieve rapid temperature rise, while resistance heating maintains high-temperature stability, which greatly improves the efficiency of zirconia melting and sintering. During the heating process of the high-frequency induction coil 7, the water inlet 10 and the water outlet 11 are connected to an external water source, so that the cooling water circulates in the internal water cooling channel to cool the high-frequency induction coil 7 and achieve temperature control of the high-frequency induction coil 7. At the same time, if a sintering abnormality occurs inside the device, there is no need to manually open the cover. The hydraulic cylinder 3 drives the lifting frame 4 to rise, and the sealed furnace cover 5 automatically opens as the lifting frame 4 rises, which greatly improves the safety performance of the device.

[0045] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A heating device for zirconium oxide melting and sintering, comprising a furnace chamber (1), characterized in that: A mounting base (2) is fixedly connected to one side of the furnace chamber (1). A hydraulic cylinder (3) is vertically mounted on the top of the mounting base (2). A lifting frame (4) is provided at the top of the hydraulic cylinder (3). A sealing furnace cover (5) is provided at the top opening of the furnace chamber (1). The sealing furnace cover (5) is fixed to the bottom of the lifting frame (4). A heating chamber (6) is provided inside the side wall of the furnace chamber (1). A high-frequency induction coil (7) is provided inside the heating chamber (6). A resistance heating element (8) is vertically mounted at the center of the inner bottom wall of the furnace chamber (1). An inner barrel (9) is provided inside the furnace chamber (1).

2. The heating device for zirconium oxide melting and sintering according to claim 1, characterized in that: The high-frequency induction coil (7) has a spiral copper tube structure and a water-cooling channel is provided inside the high-frequency induction coil (7).

3. The heating device for zirconium oxide melting and sintering according to claim 1, characterized in that: Both ends of the high-frequency induction coil (7) extend to the outside of the furnace (1) and are respectively fixedly connected to a water inlet (10) and a water outlet (11).

4. The heating device for zirconium oxide melting and sintering according to claim 1, characterized in that: Both extended ends of the high-frequency induction coil (7) are fixedly connected to terminals (12).

5. A heating device for zirconium oxide melting and sintering according to claim 1, characterized in that: The lifting frame (4) includes a support arm (401) fixed to the top output end of the hydraulic cylinder (3), one end of the support arm (401) is fixedly connected to an mounting frame (402), and the sealed furnace cover (5) is fixed to the bottom of the mounting frame (402).

6. The heating device for zirconium oxide melting and sintering according to claim 1, characterized in that: The resistance heating element (8) is embedded in the inner bottom wall of the inner barrel (9), and a heat-conducting sleeve (13) is fixedly connected to the center position of the inner bottom wall. The resistance heating element (8) is embedded inside the heat-conducting sleeve (13).

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