Oxygen reduction device for high-temperature argon

Abstract

The oxygen reduction device comprises a flow guide cylinder and an inner cylinder installed in the flow guide cylinder, a fixing plate is fixedly connected between the flow guide cylinder and the outer wall of the upper end of the inner cylinder, and a through opening is formed in the outer wall of the lower end of the flow guide cylinder. A separation groove is formed in the fixing plate to separate the guide cylinder from the inner cylinder, a gear a is arranged on the upper side of the inner cylinder, the right side of the gear a is meshed with a gear b, a driving motor is arranged on the upper side of the gear b to drive the gear b to rotate, and the driving motor is electrically connected with an external power source. The flow guide cylinder and the inner cylinder are separated through the separation groove, and then the gear a, the gear b and the driving motor are installed, so that the inner cylinder rotates in the flow guide cylinder, the convection effect of argon is helped to be improved, discharge of gas such as oxygen is promoted, and formation of bubbles in the crystal growth process is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field related to guide tubes, and particularly relates to an oxygen reduction device for high-temperature argon gas. Background Art

[0002] The single crystal furnace guide tube is usually used to control the temperature and fluid flow during the crystal growth process. It is an important component of the single crystal furnace. One of the oxygen reduction measures is to increase the discharge of oxygen content, change the angle of the guide tube, increase the argon flow rate on the liquid surface, and take away more oxygen atoms. However, when the guide tube guides the flow of oxygen content, it can only drive the discharge of oxygen content through the temperature difference of argon temperature, which makes it difficult to control the oxygen content and affects the discharge efficiency of oxygen content. Utility Model Content

[0003] The purpose of the present invention is to provide a high-temperature argon gas deoxygenation device to solve the problem that the guide tube proposed in the above background technology can only drive the discharge of oxygen content through the argon temperature difference when guiding the oxygen content circulation, resulting in difficulty in controlling the oxygen content.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-temperature argon deoxygenation device, comprising a guide tube and an inner tube installed inside the guide tube;

[0005] A fixing plate is fixedly connected between the guide cylinder and the upper outer wall of the inner cylinder;

[0006] The outer wall of the lower end of the guide cylinder is provided with a through opening;

[0007] A separation groove is provided inside the fixed plate to separate the guide cylinder and the inner cylinder. A gear a is provided on the upper side of the inner cylinder. A gear b is engaged with the right side of the gear a. A drive motor is provided on the upper side of the gear b to drive the gear b to rotate. The drive motor is electrically connected to an external power supply.

[0008] Preferably, the outer wall of the lower end of the driving motor is provided with a driving shaft that penetrates downward into the interior of the gear b to drive the gear b to rotate, and a positioning shaft is provided between the gear a and the fixed plate to limit the position of the gear a.

[0009] Preferably, a fixing groove is provided on the left side of the dividing groove and inside the fixing plate, and a fixing ring is fixedly connected to the inner wall of the right end of the dividing groove and passes through the fixing groove to the left to limit the position of the inner cylinder after being divided by the dividing groove.

[0010] Preferably, the outer walls at both ends of the drive motor are fixedly connected with connecting plates, and the lower sides of the two connecting plates are provided with upwardly penetrating fixing screws to limit the position of the drive motor.

[0011] Preferably, the gear a and the gear b are meshed with each other, and the gear a and the gear b are on the same horizontal line.

[0012] Preferably, the inner cylinder can rotate clockwise or counterclockwise according to the driving direction of the driving motor, and the gear a and the gear b are both made of stainless steel.

[0013] Preferably, the outer wall of the upper end of the fixing plate is provided with fixing holes passing through from top to bottom, close to the left and right sides respectively, and the guide cylinder and the inner cylinder are both inclined.

[0014] Compared with the prior art, the present invention provides a high-temperature argon deoxygenation device with the following beneficial effects:

[0015] The guide tube and the inner tube are separated by a separation groove, and then gear a, gear b and a drive motor are installed. The drive motor drives gear b to engage with gear a, so that the inner tube rotates inside the guide tube, which helps to improve the convection effect of argon, promotes the discharge of gases such as oxygen, and reduces the formation of bubbles during the crystal growth process, thereby reducing the impact of oxygen content on crystal quality. At the same time, it avoids local temperatures that are too high or too low, which is conducive to the growth of crystals under uniform temperature conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a high-temperature argon deoxygenation device of the present utility model.

[0017] Figure 2 This is a structural schematic diagram of a high-temperature argon deoxygenation device of the present utility model.

[0018] Figure 3 This is a schematic diagram of the local structure of the fixed plate area of ​​the present invention.

[0019] In the figure: 1. Through port; 2. Guide tube; 3. Inner tube; 4. Fixing plate; 5. Fixing hole; 6. Gear a; 7. Positioning shaft; 8. Fixing groove; 9. Fixing ring; 10. Separation groove; 11. Gear b; 12. Drive shaft; 13. Drive motor; 14. Connecting plate; 15. Fixing screw. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The utility model provides Figure 1-3The high-temperature argon gas deoxygenation device shown includes a draft tube 2 and an inner tube 3 installed inside the draft tube 2;

[0022] A fixing plate 4 is fixedly connected between the guide tube 2 and the upper outer wall of the inner tube 3;

[0023] A through hole 1 is provided on the outer wall of the lower end of the draft tube 2. When the high-temperature argon flows through the liquid surface, the temperature difference is smaller than that of the room-temperature argon, and the heat exchange with the liquid surface is reduced, which can reduce the shaking of the liquid surface. Therefore, the argon flow rate can be increased on the original basis, taking away more oxygen atoms. The argon enters the interior of the draft tube 2 through the through hole 1 and transfers oxygen under the guidance of the inner tube 3, thereby achieving the purpose of reducing oxygen.

[0024] A separation groove 10 is provided inside the fixed plate 4 to separate the guide tube 2 and the inner tube 3. A gear a6 is provided on the upper side of the inner tube 3. A gear b11 is engaged with the right side of the gear a6. A drive motor 13 is provided on the upper side of the gear b11 to drive the gear b11 to rotate. The drive motor 13 is electrically connected to an external power supply. When guiding the movement of oxygen, the drive motor 13 drives the gear b11 to rotate, and the gear b11 drives the gear a6 to rotate. During the rotation process, the gear a6 will synchronously drive the inner tube 3 separated by the separation groove 10 to rotate, thereby accelerating the oxygen delivery speed.

[0025] like Figure 3 As shown, the outer wall of the lower end of the driving motor 13 is provided with a driving shaft 12 that penetrates downwardly into the interior of the gear b11 to drive the gear b11 to rotate, a positioning shaft 7 is provided between the gear a6 and the fixed plate 4 to limit the position of the gear a6, and a fixing groove 8 is provided on the left side of the dividing groove 10 and inside the fixed plate 4. The inner wall of the right end of the dividing groove 10 is fixedly connected with a fixing ring 9 that penetrates to the left into the fixing groove 8 to limit the position of the inner cylinder 3 after being separated by the dividing groove 10.

[0026] The driving motor 13 transmits kinetic energy to the gear b11 through the driving shaft 12, causing the gear b11 to rotate. The position of the gear a6 can be limited by the positioning shaft 7, and at the same time, it is connected and fixed to the inner cylinder 3. When the inner cylinder 3 rotates, the rotation position of the inner cylinder 3 is guaranteed by the restriction and guidance of the fixing groove 8 and the fixing ring 9.

[0027] like Figure 3 As shown, the outer walls of the left and right ends of the driving motor 13 are fixedly connected with connecting plates 14, and the lower sides of the two connecting plates 14 are provided with upward penetrating fixing screws 15 to limit the position of the driving motor 13. The gear a6 and the gear b11 are meshed with each other, and the gear a6 and the gear b11 are on the same horizontal line.

[0028] By abutting the connecting plate 14 against a suitable installation position and inserting the fixing screw 15, the position of the driving motor 13 can be fixed, and the gears a6 and b11 that mesh with each other and remain on the same horizontal line can ensure smooth rotation.

[0029] like Figure 3 As shown, the inner cylinder 3 can rotate clockwise or counterclockwise according to the driving direction of the driving motor 13, and the gear a6 and the gear b11 are both made of stainless steel.

[0030] The oxygen content circulation rate is controlled by different rotation lines and speeds. Gears a6 and b11 made of stainless steel are hard in texture and suitable for long-term use.

[0031] like Figure 1 As shown, the upper outer wall of the fixing plate 4 is provided with fixing holes 5 passing through from top to bottom, near the left and right sides respectively, and the guide cylinder 2 and the inner cylinder 3 are both inclined.

[0032] The guide tube 2 can be fixed at a corresponding position in the single crystal furnace by cooperating between the fixing hole 5 and the external fixing bolts. The inclined guide tube 2 and the inner tube 3 can increase the speed of oxygen flow.

[0033] The implementation principle of this embodiment is: when high-temperature argon flows through the liquid surface, the temperature difference is smaller than that of normal-temperature argon, and the heat exchange with the liquid surface is reduced, which can reduce the jitter of the liquid surface. Therefore, the argon flow rate can be increased on the original basis to take away more oxygen atoms and enter the guide tube 2 through the port 1. Under the guidance of the inner tube 3, the oxygen is transferred to achieve the purpose of oxygen reduction. When guiding the movement of oxygen, the gear b11 is driven to rotate by the driving motor 13, and the gear b11 drives the gear a6 to rotate. During the rotation process, the gear a6 will synchronously drive the inner tube 3 separated by the separation groove 10 to rotate, thereby accelerating the oxygen delivery speed.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-temperature argon deoxygenation device, comprising a guide tube (2) and an inner tube (3) installed inside the guide tube (2); A fixing plate (4) is fixedly connected between the guide cylinder (2) and the upper outer wall of the inner cylinder (3); A through opening (1) is provided on the outer wall of the lower end of the guide tube (2); Its characteristics are: A separation groove (10) is provided inside the fixing plate (4) to separate the guide tube (2) and the inner tube (3). A gear a (6) is provided on the upper side of the inner tube (3). A gear b (11) is engaged with the right side of the gear a (6). A driving motor (13) is provided on the upper side of the gear b (11) to drive the gear b (11) to rotate. The driving motor (13) is electrically connected to an external power supply.

2. The high-temperature argon deoxygenation device according to claim 1, characterized in that: The outer wall of the lower end of the driving motor (13) is provided with a driving shaft (12) that penetrates downwardly into the interior of the gear b (11) to drive the gear b (11) to rotate. A positioning shaft (7) is provided between the gear a (6) and the fixed plate (4) to limit the position of the gear a (6).

3. The high-temperature argon deoxygenation device according to claim 1, characterized in that: A fixing groove (8) is provided on the left side of the separation groove (10) and inside the fixing plate (4). A fixing ring (9) is fixedly connected to the inner wall of the right end of the separation groove (10) and passes through the fixing groove (8) to the left to limit the position of the inner cylinder (3) after being separated by the separation groove (10).

4. The high-temperature argon deoxygenation device according to claim 1, characterized in that: The outer walls at both ends of the drive motor (13) are fixedly connected with connecting plates (14), and the lower sides of the two connecting plates (14) are provided with fixing screws (15) that penetrate upwards to limit the position of the drive motor (13).

5. The high-temperature argon deoxygenation device according to claim 1, characterized in that: The gear a (6) and the gear b (11) are meshed with each other, and the gear a (6) and the gear b (11) are on the same horizontal line.

6. The high-temperature argon deoxygenation device according to claim 1, characterized in that: The inner cylinder (3) can rotate clockwise or counterclockwise according to the driving direction of the driving motor (13), and the gear a (6) and the gear b (11) are both made of stainless steel.

7. The high-temperature argon deoxygenation device according to claim 1, characterized in that: The upper outer wall of the fixing plate (4) is provided with fixing holes (5) passing through from top to bottom, respectively, near the left and right sides. The guide cylinder (2) and the inner cylinder (3) are both inclined.

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