Device for removing gallium oxide

Abstract

The utility model relates to the field of production equipment, and discloses a device for removing gallium oxide, which comprises a crucible, a heating assembly and a valve, a discharge pipe is arranged at the bottom of the crucible, the valve is arranged on the discharge pipe, and the heating assembly is used for heating the crucible; and a filter screen for intercepting solid substances is arranged in the crucible. Before gallium arsenide is produced, the raw material solid gallium is subjected to impurity removal treatment, the solid gallium is placed on the filter screen to be heated, by controlling the heating temperature, the solid gallium is molten into a liquid state to enter the crucible, gallium oxide and other impurities are intercepted by the filter screen, impurity removal is achieved, and the situation that the gallium oxide and other impurities affect the quality of a gallium arsenide finished product is avoided.

Description

Technical Field

[0001] The utility model relates to the field of production equipment, in particular to a heating reaction device, and in particular to a device for removing gallium oxide. Background Art

[0002] The synthesis of gallium arsenide polycrystals requires high-purity arsenic and gallium raw materials. High-purity arsenic and high-purity gallium are configured in a certain proportion. Blocks of high-purity gallium are split using tools, and then mixed with high-purity arsenic and placed in a material tube. The material tube needs to be placed in an oven for baking before vacuum packaging to dry out the moisture in the high-purity gallium. Then, after packaging, it is loaded into a synthesis furnace to synthesize gallium arsenide polycrystals.

[0003] Solid gallium is easily oxidized to gallium oxide when it comes into contact with air. When solid gallium is used to synthesize gallium arsenide, the gallium oxide doped in solid gallium is difficult to decompose during the synthesis process, which affects the structure of the gallium arsenide crystal, causing an imbalance in the arsenic-gallium ratio in the crystal, and causing fine cracks and unevenness on the crystal surface, affecting the quality of the finished gallium arsenide. Utility Model Content

[0004] In view of the defects and shortcomings of the prior art, the utility model provides a device for removing gallium oxide.

[0005] A device for removing gallium oxide comprises a crucible, a heating component and a valve. A discharge pipe is provided at the bottom of the crucible, the valve is arranged on the discharge pipe, and the heating component is used to heat the crucible. A filter screen for intercepting solid matter is arranged in the crucible.

[0006] Preferably, the filter screen is provided with multiple layers, and the multiple layers of the filter screen are arranged at intervals along the height direction of the crucible.

[0007] Further preferably, the filter screen is arranged in three layers.

[0008] Preferably, it further comprises a vacuum machine and a vacuum pipeline, a sealing cover is arranged on the top of the crucible, and the vacuum machine and the crucible are connected through the vacuum pipeline.

[0009] Preferably, it further comprises a booster and a booster pipeline, and the crucible and the booster are connected through the booster pipeline.

[0010] Preferably, the crucible comprises a main body and a cone, the cone is arranged below the main body, and the discharge pipe is arranged at the apex of the cone.

[0011] Preferably, the heating component is sleeved on the crucible, and a heat preservation cavity is provided between the heating component and the crucible.

[0012] Preferably, the heating assembly comprises a heat-insulating layer and a heating wire, the heat-insulating layer is arranged around the crucible, and the heating wire is located between the crucible and the heat-insulating layer.

[0013] Preferably, a gallium boat is further included, and the gallium boat is located below the discharge pipe.

[0014] Preferably, a weighing piece is further included, wherein the weighing piece is located below the discharge pipe, and the gallium boat is located above the weighing piece.

[0015] Preferably, it also includes a control system, which is electrically connected to the valve and the weighing piece respectively.

[0016] Compared with the prior art, the utility model has the following obvious beneficial effects:

[0017] (1) By setting up crucibles, heating components, valves, and filters, the raw material solid gallium is treated for impurities before producing gallium arsenide. The solid gallium is heated to melt it into liquid. Because the density of gallium is greater than that of gallium oxide, when gallium is melted, gallium oxide floats above the gallium liquid. When the gallium liquid is needed, the valve is opened, and the gallium liquid flows out through the discharge pipe, while gallium oxide and other impurities are intercepted by the filter to achieve impurity removal and prevent gallium oxide and other impurities from affecting the quality of the finished gallium arsenide product.

[0018] (2) A vacuum machine is set up to provide a vacuum atmosphere to avoid secondary oxidation of the gallium liquid during the impurity removal process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall cross-sectional structure of Example 1 of the utility model.

[0020] Explanation of the reference numerals: 1. crucible; 101. main body; 102. cone; 2. discharge pipe; 3. valve; 4. sealing cover; 5. filter screen; 6. heating component; 7. insulation chamber; 8. vacuum pipe; 9. booster pipe; 10. weighing piece; 11. gallium boat. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and technical advantages to be solved by the present invention clearer, they will be described in detail below with reference to specific examples, but the protection scope of the present invention is not limited to the following specific embodiments.

[0022] Unless otherwise defined, all professional terms used below have the same meaning as those generally understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present utility model.

[0023] Embodiment 1:

[0024] A device for removing gallium oxide, referring to Figure 1, including a crucible 1, a discharge pipe 2, a valve 3, a heating component 6, a vacuum component, and a pressurizing component. A sealing cover 4 is arranged on the top of the crucible 1. The crucible 1 includes a main body 101 and a cone 102. The cone 102 is arranged below the main body 101. The discharge pipe 2 is connected to the crucible 1, and the discharge pipe 2 is arranged at the top of the cone 102. The valve 3 is arranged on the discharge pipe 2. A filter screen 5 for intercepting solid substances is arranged in the crucible 1. Preferably, the filter screen 5 is arranged in multiple layers. In this specific embodiment, the filter screen 5 is arranged in three layers, and the three layers of filter screens 5 are arranged at intervals along the height direction of the crucible 1.

[0025] The heating assembly 6 is used to heat the crucible 1. The heating assembly 6 is sleeved on the main body 101 and the cone 102. A heat preservation chamber 7 is provided between the heating assembly 6 and the crucible 1. The heat preservation is carried out by air to reduce heat loss and energy consumption. In this specific embodiment, the heating assembly 6 is a constant temperature heater.

[0026] When removing gallium oxide, solid gallium is placed on the filter screen 5 at the top of the crucible 1, and then the heating component 6 is started to heat the solid gallium, and the solid gallium melts into liquid. Because the density of gallium is greater than that of gallium oxide, when gallium melts, gallium oxide floats above the gallium liquid. When gallium liquid is needed, valve 3 is opened, and the gallium liquid flows out through the discharge pipe 2, while gallium oxide and other impurities are intercepted by the filter screen to achieve impurity removal and prevent gallium oxide from affecting the quality of the finished gallium arsenide product.

[0027] A sealing ring is arranged inside the sealing cover 4, and the sealing cover 4 and the crucible 1 can be fixed by common fixing methods such as snap connection, buckle fixing, thread fixing, etc.

[0028] The vacuum assembly includes a vacuum device and a vacuum pipe 8. One end of the vacuum pipe 8 is connected to the vacuum device, and the other end is connected to the sealing cover 4. By setting up a vacuum machine, a vacuum atmosphere is provided during impurity removal to avoid secondary oxidation of the gallium liquid during the reaction.

[0029] The pressurizing assembly includes a pressurizing machine and a pressurizing pipeline 9, one end of the pressurizing pipeline 9 is connected to the pressurizing machine, and the other end is connected to the sealing cover 4. In this specific embodiment, the pressurizing machine provides nitrogen to the crucible 1, which increases the pressure in the crucible 1 and prevents the gallium liquid from being secondary oxidized. In other embodiments, the gas provided by the pressurizing machine may be a commonly used inert gas such as argon.

[0030] The device for removing gallium oxide also includes a weighing piece 10, a gallium boat 11, and a control system. The gallium boat 11 is located directly below the discharge pipe 2 and is used to hold the gallium arsenide liquid. The weighing piece 10 is used to weigh the weight of the gallium arsenide taken out. In this specific embodiment, the weighing piece 10 is an electronic scale, and the valve 3 is an electronically controlled valve 3.

[0031] In actual applications, the control system is electrically connected to the electronic scale and the electric control valve 3 respectively. During production, the preset value of the electronic scale is set according to production needs, and the control system issues a command to open the electric control valve 3. When the gallium liquid weighed by the electronic scale reaches the preset value, the electronic scale feeds back data information to the control system, and the control system issues a command to close the electric control valve 3, thereby realizing automation without manual operation and saving labor costs.

[0032] Embodiment 2:

[0033] The difference from Example 1 is that the heating component 6 includes a heating wire and an insulation layer, the insulation layer is sleeved on the main body 101 and the cone 102, and an insulation cavity 7 is arranged between the insulation layer and the crucible 1, the heating wire is fixedly connected to the inner wall of the insulation layer, and the heating wire is spirally laid along the inner wall of the insulation layer.

[0034] The above embodiments are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope of the present invention according to the technical solution and concept of the present invention, which should be included in the protection scope of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

Claims

1. A device for removing gallium oxide, characterized in that: The crucible (1) comprises a crucible (1), a heating component (6) and a valve (3); a discharge pipe (2) is provided at the bottom of the crucible (1); the valve (3) is arranged on the discharge pipe (2); the heating component (6) is used to heat the crucible (1); and a filter (5) is provided in the crucible (1) for intercepting solid matter.

2. The device for removing gallium oxide according to claim 1, characterized in that: The filter screen (5) is provided with multiple layers, and the multiple layers of the filter screen (5) are arranged at intervals along the height direction of the crucible (1).

3. The device for removing gallium oxide according to claim 1, characterized in that: It also comprises a vacuum machine and a vacuum pipeline (8); a sealing cover (4) is arranged on the top of the crucible (1); and the vacuum machine and the crucible (1) are connected via the vacuum pipeline (8).

4. The device for removing gallium oxide according to claim 1 or 3, characterized in that: It also comprises a booster and a booster pipeline (9), and the crucible (1) and the booster are connected via the booster pipeline (9).

5. The device for removing gallium oxide according to claim 1, characterized in that: The crucible (1) comprises a main body (101) and a cone (102), wherein the cone (102) is arranged below the main body (101), and the discharge pipe (2) is arranged at the apex of the cone (102).

6. The device for removing gallium oxide according to claim 1, characterized in that: The heating component (6) is sleeved on the crucible (1), and a heat preservation chamber (7) is provided between the heating component (6) and the crucible (1).

7. The device for removing gallium oxide according to claim 6, characterized in that: The heating component (6) comprises a heat-insulating layer and a heating wire, the heat-insulating layer is arranged around the crucible (1), and the heating wire is located between the crucible (1) and the heat-insulating layer.

8. The device for removing gallium oxide according to claim 1, characterized in that: It also includes a gallium boat (11), and the gallium boat (11) is located below the discharge pipe (2).

9. The device for removing gallium oxide according to claim 8, characterized in that: It also comprises a weighing piece (10), wherein the weighing piece (10) is located below the discharge pipe (2), and the gallium boat (11) is located above the weighing piece (10).

10. The device for removing gallium oxide according to claim 9, characterized in that: It also comprises a control system, which is electrically connected to the valve (3) and the weighing element (10) respectively.

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