Magnesium oxide ceramic tube sintering equipment

Abstract

The utility model discloses magnesium oxide ceramic tube sintering equipment, which belongs to the technical field of ceramic tube sintering and comprises a sintering seat, a sintering table protective shell is arranged at the top of the sintering seat, an additive box is detachably mounted at the top of the sintering table protective shell, and an intelligent quantity control valve is arranged at the bottom of the additive box. An additive discharging hole is formed in the middle area of the bottom of the sintering table protection shell, a ceramic tube protection shell is arranged at the top of the sintering table protection shell, a receiving hole is formed in the top of the ceramic tube protection shell, the shape of the top of the ceramic tube protection shell is matched with that of the additive discharging hole, and remote operation of additive discharging is achieved by remotely controlling the intelligent quantity control valve. The function of custom additive adding can be achieved in the ceramic tube sintering process, the sintering performance of the magnesium oxide ceramic is effectively promoted, and the possibility that the additive phase pollutes the ceramic tube in the using process can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical direction of ceramic tube sintering, and specifically relates to a magnesium oxide ceramic tube sintering device. Background Art

[0002] The theoretical melting point of magnesium oxide ceramics is as high as 2800℃. It can work stably at 2400℃ in an oxidizing atmosphere or under nitrogen protection. It is also extremely resistant to alkaline metal slag, has excellent thermochemical properties and stability against metals, and is particularly suitable for harsh occasions where ceramic materials such as alumina are difficult to meet the conditions at high temperatures and in the presence of alkaline corrosive substances, such as smelting non-ferrous metals and precious metals. It can also be used to smelt high-purity radioactive metal uranium, thorium alloys, iron and its alloys. Currently, most magnesium oxide ceramic products on the market are thermocouple protection tubes, high-temperature insulating materials, etc., and the size of magnesium oxide tubes and crucibles is generally small (height <100mm, aspect ratio <2), with disadvantages such as low density and high content of sintering aids, which limits the application of high-performance magnesium oxide functional ceramic materials;

[0003] Production technology of high-performance magnesium oxide ceramic tubes. The technology of this project has the following advantages:

[0004] 1. It can produce large-sized, large-aspect-ratio, one-end closed tubular crucibles; its products mainly have the following sizes: F63′290mm, F55′290mm, F51′260mm, F41′250mm, F20′250mm, with a wall thickness of about 3 to 5mm. It can produce a wide range of sizes, with diameters and lengths ranging from tens of millimeters to hundreds of millimeters. Its maximum size is mainly restricted by the size of the molding and sintering equipment.

[0005] 2. Good high temperature resistance and corrosion resistance, the operating temperature is 1600-1800℃;

[0006] 3. High density, relative density reaches 0.93;

[0007] 4. High purity, MgO content> 96%, can effectively avoid contamination of the sample at high temperature;

[0008] 5. Use industrial magnesia as raw material, low cost and convenient supply;

[0009] Sintered ceramic tube is a ceramic tube made by high-temperature sintering process. It has the advantages of high mechanical strength, high temperature resistance, corrosion resistance, etc., and is widely used in the industrial field. However, additives cannot be added during the sintering process of ceramic tubes, so it is impossible to go further in improving the success rate of ceramic tube sintering. Utility Model Content

[0010] The utility model aims to provide a magnesium oxide ceramic tube sintering device for existing devices to solve the problems raised in the above background technology.

[0011] In order to solve the above technical problems, the utility model provides the following technical solutions: a magnesium oxide ceramic tube sintering device, comprising a sintering seat, a sintering table protective shell is arranged on the top of the sintering seat, an additive box is detachably installed on the top of the sintering table protective shell, an intelligent quantity control valve is arranged at the bottom of the additive box, a discharge hole is arranged in the middle area of ​​the bottom of the sintering table protective shell, a ceramic tube protective shell is arranged on the top of the sintering table protective shell, a receiving hole is arranged on the top of the ceramic tube protective shell, and the top shape of the ceramic tube protective shell matches the discharge hole.

[0012] The utility model further describes that four bolt rods are fixedly installed on the top of the sintering seat, a connecting plate is fixedly installed on each of the bolt rods, a chuck seat is fixedly installed on the end of the connecting plate, and a positioning seat is arranged on the top of the chuck seat, and the positioning seat matches the ceramic tube protective shell.

[0013] The utility model further illustrates that a ceramic tube mold is arranged in the positioning seat, and the ceramic tube mold is covered by the ceramic tube protection shell.

[0014] The utility model further describes that exhaust cavities are arranged on both sides of the sintering table protective shell, and a baffle can be detachably installed in the exhaust cavity toward the direction of the ceramic tube mold, a mounting hole is arranged in the middle of the baffle, and a fan is arranged in the mounting hole.

[0015] The utility model further illustrates that an air groove is arranged on the outer side wall of the sintering table protective shell.

[0016] The utility model further describes that the additive box is filled with additives.

[0017] Compared with the prior art, the beneficial effects achieved by the utility model are as follows: the utility model, by providing an intelligent quantity control valve, realizes remote operation of the discharge of additives by remotely controlling the intelligent quantity control valve, can realize the function of custom additive addition during the sintering process of ceramic tubes, effectively promotes the sintering performance of magnesium oxide ceramics, and helps to reduce the possibility of contamination of the ceramic tube by the additive phase during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the ceramic tube protection shell of the utility model;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the sintering table protective shell of the utility model;

[0022] Figure 4 It is an overall three-dimensional exploded schematic diagram of the utility model;

[0023] Figure 5 It is a schematic diagram of the additive box of the utility model;

[0024] In the figure: 1. Sintering seat; 2. Sintering table protective shell; 3. Chuck seat; 4. Bolt rod; 5. Positioning seat; 6. Ceramic tube mold; 7. Ceramic tube protective shell; 8. Fan; 9. Air groove; 10. Baffle; 11. Mounting hole; 12. Additive box; 13. Discharge hole; 14. Receiving hole; 15. Connecting plate; 16. Intelligent quantity control valve. DETAILED DESCRIPTION

[0025] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 The utility model provides a technical solution: a magnesium oxide ceramic tube sintering device, including a sintering seat 1, a sintering table protective shell 2 is arranged on the top of the sintering seat 1, an additive box 12 is detachably installed on the top of the sintering table protective shell 2, a discharge hole 13 is arranged in the middle area of ​​the bottom of the sintering table protective shell 2, a ceramic tube protective shell 7 is arranged on the top of the sintering table protective shell 2, a receiving hole 14 is arranged on the top of the ceramic tube protective shell 7, and the top shape of the ceramic tube protective shell 7 matches the discharge hole 13.

[0027] Four bolt rods 4 are fixedly installed on the top of the sintering seat 1, and a connecting plate 15 is fixedly installed on each bolt rod 4. A chuck seat 3 is fixedly installed on the end of the connecting plate 15, and a positioning seat 5 is set on the top of the chuck seat 3. The positioning seat 5 matches the ceramic tube protection shell 7, and the bolt rod 4 and the sintering table protection shell 2 are a detachable connection structure.

[0028] A ceramic tube mold 6 is arranged in the positioning seat 5 , and the ceramic tube mold 6 is covered by a ceramic tube protection shell 7 .

[0029] Exhaust cavities are arranged on both sides of the sintering table protection shell 2 . A baffle 10 can be detachably installed in the exhaust cavity toward the ceramic tube mold 6 . A mounting hole 11 is arranged in the middle of the baffle 10 , and a fan 8 is arranged in the mounting hole 11 .

[0030] An air groove 9 is provided on the outer side wall of the sintering table protective shell 2 .

[0031] The additive box 12 is filled with additives.

[0032] Before sintering the ceramic tube, first remove the sintering table protection shell 2 from the bolt rod 4, then remove the ceramic tube protection shell 7 from the positioning seat 5, place the pre-prepared ceramic tube into the ceramic tube mold 6, then install the ceramic tube protection shell 7, so that the ceramic tube protection shell 7 is fixed to the positioning seat 5, and finally install the sintering table protection shell 2 on the bolt rod 4. Since the top shape of the ceramic tube protection shell 7 matches the agent discharge hole 13, and a layer of sealing gasket is provided on the surface of the ceramic tube protection shell 7, the top of the ceramic tube protection shell 7 extends into the interior of the sintering table protection shell 2 through the agent discharge hole 13, and the connection between the ceramic tube protection shell 7 and the agent discharge hole 13 will not cause additive leakage due to the sealing gasket.

[0033] After the ceramic tube is installed, the additive box 12 is installed on the sintering table protective shell 2, and an intelligent quantity control valve 16 is set at the bottom of the additive box 12. The intelligent quantity control valve 16 and the receiving hole 14 are on the same vertical line. The intelligent quantity control valve 16 is remotely controlled to realize the remote operation of the discharge of additives. The function of custom additive addition can be realized during the sintering process of the ceramic tube, which effectively promotes the sintering performance of magnesium oxide ceramics and helps to reduce the possibility of contamination of the ceramic tube by the additive phase during use;

[0034] A sintering machine is arranged in the chuck seat 3, and its function is to sinter the ceramic tube mold 6 above;

[0035] The intelligent volume control valve 16 is an existing device;

[0036] After the ceramic tube is sintered, the fan 8 is started to cool the ceramic tube mold 6 to accelerate the cooling of the ceramic tube.

[0037] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0038] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, 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 embodiments of the utility model.

Claims

1. A magnesium oxide ceramic tube sintering device, comprising a sintering seat (1), characterized in that: A sintering table protective shell (2) is arranged on the top of the sintering seat (1), an additive box (12) is detachably mounted on the top of the sintering table protective shell (2), an intelligent quantity control valve (16) is arranged on the bottom of the additive box (12), a discharge hole (13) is arranged in the middle area of ​​the bottom of the sintering table protective shell (2), a ceramic tube protective shell (7) is arranged on the top of the sintering table protective shell (2), a receiving hole (14) is arranged on the top of the ceramic tube protective shell (7), and the shape of the top of the ceramic tube protective shell (7) matches the discharge hole (13).

2. A magnesium oxide ceramic tube sintering equipment according to claim 1, characterized in that: Four bolt rods (4) are fixedly mounted on the top of the sintering seat (1), a connecting plate (15) is fixedly mounted on each of the bolt rods (4), a chuck seat (3) is fixedly mounted on the end of the connecting plate (15), and a positioning seat (5) is arranged on the top of the chuck seat (3), and the positioning seat (5) matches the ceramic tube protective shell (7).

3. A magnesium oxide ceramic tube sintering equipment according to claim 2, characterized in that: A ceramic tube mold (6) is arranged in the positioning seat (5), and the ceramic tube mold (6) is covered by the ceramic tube protection shell (7).

4. A magnesium oxide ceramic tube sintering equipment according to claim 3, characterized in that: Exhaust cavities are arranged on both sides of the sintering table protective shell (2), and a baffle (10) is detachably installed in the exhaust cavity in the direction facing the ceramic tube mold (6). A mounting hole (11) is arranged in the middle of the baffle (10), and a fan (8) is arranged in the mounting hole (11).

5. A magnesium oxide ceramic tube sintering equipment according to claim 4, characterized in that: An air groove (9) is provided on the outer side wall of the sintering table protective shell (2).

6. A magnesium oxide ceramic tube sintering equipment according to claim 5, characterized in that: The additive box (12) is filled with additives.

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