Furnace bottom heat preservation structure capable of reducing oxygen content

Abstract

The utility model discloses a furnace bottom heat preservation structure capable of reducing oxygen content. The furnace bottom heat preservation structure comprises a base and a connecting base arranged at the upper end of the base. When the furnace bottom heat preservation structure capable of reducing the oxygen content is used, a crucible is placed at the upper end of the heat preservation cylinder, then the heater is installed on the inner side of the base and the inner side of the connecting base, after the heater is powered on, the heater can generate heat due to internal resistance, so that the surrounding temperature rises, and heat energy is transmitted to the connecting base through the heater; after the temperature of the bottom of the crucible is increased, heat is transmitted to the materials in the crucible in a radiation and convection mode, the melting and crystallization process of the materials is promoted, the temperature of the bottom is reduced through the arrangement of the containing groove, the protection disc pressing piece, the partition plate and the ventilation holes, and therefore the temperature of the bottom of the crucible is reduced. The intake of oxygen content is reduced, the phenomenon of heat preservation pulverization of the furnace bottom is reduced, and the service life of the furnace bottom heat preservation structure for reducing the oxygen content is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field related to the design of the furnace bottom structure, and particularly relates to a furnace bottom heat preservation structure for reducing oxygen content. Background Technique

[0002] To adapt to the industrial development and market demand, N-type single-crystal high-efficiency batteries have become a major trend in the industry. How to reduce the oxygen content in the single-crystal quality is the key research direction of each single-crystal enterprise. The existing furnace bottom heat preservation structure for reducing oxygen content is mainly composed of components such as a base, a heat preservation cylinder, a clamping pipe, an annular groove, a single-crystal furnace body, a connecting seat, and a ventilation pipe. The existing furnace bottom heat preservation structure for reducing oxygen content has a relatively thick furnace bottom heat preservation, a high bottom temperature, heat accumulation at the bottom, and a relatively high oxygen content. Therefore, a furnace bottom heat preservation structure for reducing oxygen content is essential. Content of the Utility Model

[0003] The purpose of the utility model is to provide a furnace bottom heat preservation structure for reducing oxygen content, so as to solve the problems of relatively thick furnace bottom heat preservation, high bottom temperature, heat accumulation at the bottom, and relatively high oxygen content in the existing furnace bottom heat preservation structure for reducing oxygen content mentioned in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A furnace bottom heat preservation structure for reducing oxygen content, including

[0005] a base and a connecting seat arranged at the upper end position of the base;

[0006] a ventilation pipe is arranged at the lower end position of the base;

[0007] an annular groove is arranged at the inner side position of the connecting seat, and a clamping pipe is connected at the upper end position of the annular groove inside the connecting seat;

[0008] a heat preservation cylinder is installed at the upper end of the annular groove and at the outer side position of the clamping pipe, and a placement groove is arranged at the inner position of the clamping pipe;

[0009] a protection plate pressing piece is placed at the inner side position of the placement groove, a partition plate is arranged at the upper end of the clamping pipe and at the inner side position of the heat preservation cylinder, and ventilation holes are arranged at the upper inner positions of the protection plate pressing piece and the partition plate;

[0010] a single-crystal furnace body is installed at the upper end of the base and at the outer side position of the connecting seat;

[0011] Through the settings of the placement groove, the protection plate pressing piece, the partition plate and the ventilation holes, the bottom temperature is reduced, the intake of oxygen content is reduced, the pulverization phenomenon of the furnace bottom heat preservation is reduced, and the service life of the furnace bottom heat preservation structure for reducing oxygen content is improved.

[0012] Preferably, the base and the clamping tube are of an integral structure, and both the base and the clamping tube are hollow disc-shaped structures.

[0013] Preferably, the placement groove is embedded inside the clamping tube, and the inner diameter of the placement groove is equal to the outer diameter of the guard plate pressing piece.

[0014] Preferably, the guard plate pressing piece and the placement groove are connected by means of insertion. Through the setting of the placement groove, the convenience of installing the guard plate pressing piece is enhanced, and through the setting of the guard plate pressing piece, the stability of the partition plate is enhanced.

[0015] Preferably, an asbestos board is arranged at the bottom end position inside the base, and a clay refractory layer is arranged at the upper end position of the asbestos board.

[0016] Preferably, a lightweight carbon block layer is arranged at the upper end position of the clay refractory layer, and a self-cultivated carbon block layer is arranged at the upper end position of the lightweight carbon block layer.

[0017] Preferably, the thickness of the asbestos board is 10 millimeters, the clay refractory layer is provided with three layers in total, and the thickness of each layer of the clay refractory layer is 4 millimeters.

[0018] Preferably, the lightweight carbon block layer is provided with three layers in total, the self-cultivated carbon block layer is provided with five layers in total, and the thickness of each layer of the lightweight carbon block layer and the self-cultivated carbon block layer is 3 millimeters. Through the setting of the asbestos board, the clay refractory layer, the lightweight carbon block layer and the self-cultivated carbon block layer, the thermal utilization rate of the bottom furnace insulation structure for reducing oxygen content is improved, and the energy consumption is reduced.

[0019] Compared with the prior art, the present utility model provides a bottom furnace insulation structure for reducing oxygen content, which has the following beneficial effects:

[0020] 1. In this bottom furnace insulation structure for reducing oxygen content, when using the bottom furnace insulation structure for reducing oxygen content, first place the crucible on the upper end of the insulation cylinder, and then install the heater inside the base and the connecting seat. After the heater is powered on, it will generate heat due to the resistance inside, so that the surrounding temperature rises. The heat energy is transmitted from the heater to the connecting seat, and then through the ventilation holes inside the guard plate pressing piece and the partition plate to the bottom of the crucible. After the temperature at the bottom of the crucible rises, the heat is transmitted to the material inside the crucible by means of radiation and convection, promoting the melting and crystallization process of the material. Through the setting of the placement groove, the guard plate pressing piece, the partition plate and the ventilation holes, the bottom temperature is reduced, the intake of oxygen content is reduced, the pulverization phenomenon of the bottom furnace insulation is reduced, and the service life of the bottom furnace insulation structure for reducing oxygen content is improved.

[0021] 2. In this bottom furnace insulation structure with reduced oxygen content, when using the bottom furnace insulation structure with reduced oxygen content, first place the crucible on the upper end of the insulation cylinder, and then install the heater inside the base and the connecting seat. After the heater is powered on, it will generate heat due to the internal resistance, which will increase the surrounding temperature. The heat is transferred to the material inside the crucible through radiation and convection, promoting the melting and crystallization process of the material. Since the base is internally equipped with an asbestos board, a clay refractory layer, a lightweight carbon block layer, and a self-cultivated carbon block layer, the heat dissipation will be reduced, thereby maintaining the temperature inside the furnace. Through the settings of the asbestos board, the clay refractory layer, the lightweight carbon block layer, and the self-cultivated carbon block layer, the thermal utilization rate of the bottom furnace insulation structure with reduced oxygen content is improved, the energy consumption is reduced, and the production cost is also reduced. As a result, the bottom furnace insulation structure with reduced oxygen content can be better used. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. is a schematic structural diagram of a vertical sectional view of the bottom furnace insulation structure with reduced oxygen content of the present invention.

[0023] Figure 2 FIG. is a schematic structural diagram of a front view of the bottom furnace insulation structure with reduced oxygen content of the present invention.

[0024] Figure 3 FIG. is a schematic enlarged structural diagram of the base of the bottom furnace insulation structure with reduced oxygen content of the present invention.

[0025] In the figure: 1. Base; 2. Disc pressing piece; 3. Vent pipe; 4. Placing groove; 5. Annular groove; 6. Partition board; 7. Vent hole; 8. Insulation cylinder; 9. Clamping pipe; 10. Connecting seat; 11. Single crystal furnace body; 12. Asbestos board; 13. Clay refractory layer; 14. Lightweight carbon block layer; 15. Self-cultivated carbon block layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] The present invention provides as Figures 1-3The shown bottom thermal insulation structure for reducing oxygen content, a bottom thermal insulation structure for reducing oxygen content, includes a base 1 and a connecting seat 10 arranged at the upper end position of the base 1; a ventilation pipe 3 is arranged at the lower end position of the base 1; an annular groove 5 is arranged at the inner side position of the connecting seat 10, and a clamping pipe 9 is connected at the upper end position of the connecting seat 10 and inside the annular groove 5; a thermal insulation cylinder 8 is installed at the upper end of the annular groove 5 and outside the clamping pipe 9; a placement groove 4 is arranged at the inner position of the clamping pipe 9; a protective disc pressing piece 2 is placed at the inner side position of the placement groove 4; a partition plate 6 is arranged at the upper end of the clamping pipe 9 and inside the thermal insulation cylinder 8, and ventilation holes 7 are arranged at the upper inner positions of the protective disc pressing piece 2 and the partition plate 6; a single crystal furnace body 11 is installed at the upper end of the base 1 and outside the connecting seat 10; through the settings of the placement groove 4, the protective disc pressing piece 2, the partition plate 6 and the ventilation holes 7, the bottom temperature is reduced, the intake of oxygen content is reduced, the pulverization of the bottom thermal insulation is reduced, and the service life of the bottom thermal insulation structure for reducing oxygen content is improved.

[0028] As Figure 1 , Figure 2 and Figure 3 shown, in order to reduce the bottom temperature and reduce the intake of oxygen content, when using the bottom thermal insulation structure for reducing oxygen content, first place the crucible on the upper end of the thermal insulation cylinder 8, then install the heater inside the base 1 and the connecting seat 10. After the heater is powered on, it will generate heat due to the resistance inside, so that the surrounding temperature rises. The heat energy is transferred to the connecting seat 10 through the heater, and then transferred to the bottom of the crucible through the ventilation holes 7 inside the protective disc pressing piece 2 and the partition plate 6. After the temperature of the bottom of the crucible rises, the heat is transferred to the materials inside the crucible through radiation and convection, promoting the melting and crystallization process of the materials. Through the settings of the placement groove 4, the protective disc pressing piece 2, the partition plate 6 and the ventilation holes 7, the bottom temperature is reduced, the intake of oxygen content is reduced, the pulverization of the bottom thermal insulation is reduced, and the service life of the bottom thermal insulation structure for reducing oxygen content is improved.

[0029] The base 1 and the clamping pipe 9 are of an integral structure. Both the base 1 and the clamping pipe 9 are hollow disc-shaped structures. The placement groove 4 is embedded inside the clamping pipe 9. The inner diameter of the placement groove 4 is equal to the outer diameter of the protective disc pressing piece 2. The protective disc pressing piece 2 and the placement groove 4 are connected by means of plugging. Through the setting of the placement groove 4, the convenience of installing the protective disc pressing piece 2 is enhanced, and through the setting of the protective disc pressing piece 2, the stability of the partition plate 6 is enhanced.

[0030] As Figure 1 and Figure 2As shown in the figure, when using the bottom furnace insulation structure with reduced oxygen content, first insert the guard plate pressing piece 2 into the interior of the placement groove 4, then place the partition plate 6 on the upper end of the clamping pipe 9, so that the ventilation holes 7 inside the guard plate pressing piece 2 are aligned with the ventilation holes 7 inside the partition plate 6. Through the setting of the placement groove 4, the convenience of installing the guard plate pressing piece 2 is enhanced, thereby making the placement of the guard plate pressing piece 3 more convenient. And the setting of the guard plate pressing piece 2 enhances the stability of the partition plate 6.

[0031] At the bottom end position inside the base 1, an asbestos board 12 is provided. At the upper end position of the asbestos board 12, a clay refractory layer 13 is provided. At the upper end position of the clay refractory layer 13, a lightweight carbon block layer 14 is provided. At the upper end position of the lightweight carbon block layer 14, a self-cultivated carbon block layer 15 is provided. The thickness of the asbestos board 12 is ten millimeters. The clay refractory layer 13 is provided with three layers in total, and the thickness of each layer of the clay refractory layer 13 is four millimeters. The lightweight carbon block layer 14 is provided with three layers in total, and the self-cultivated carbon block layer 15 is provided with five layers in total. The thickness of each layer of the lightweight carbon block layer 14 and the self-cultivated carbon block layer 15 is three millimeters. Through the setting of the asbestos board 12, the clay refractory layer 13, the lightweight carbon block layer 14 and the self-cultivated carbon block layer 15, the heat utilization rate of the bottom furnace insulation structure with reduced oxygen content is improved, and the energy consumption is reduced.

[0032] As Figure 2 and Figure 3 As shown in the figure, in order to improve the heat utilization rate of the bottom furnace insulation structure with reduced oxygen content and reduce the energy consumption, when using the bottom furnace insulation structure with reduced oxygen content, first place the crucible on the upper end of the insulation cylinder 8, and then install the heater inside the base 1 and the connecting seat 10. After the heater is powered on, it will generate heat due to the resistance inside, so that the surrounding temperature rises. The heat is transferred to the material inside the crucible through radiation and convection, promoting the melting and crystallization process of the material. Since the asbestos board 12, the clay refractory layer 13, the lightweight carbon block layer 14 and the self-cultivated carbon block layer 15 are installed inside the base 1, the heat dissipation will be reduced, and then the temperature inside the furnace will be maintained. Through the setting of the asbestos board 12, the clay refractory layer 13, the lightweight carbon block layer 14 and the self-cultivated carbon block layer 15, the heat utilization rate of the bottom furnace insulation structure with reduced oxygen content is improved, the energy consumption is reduced, and at the same time the production cost is reduced, so that the bottom furnace insulation structure with reduced oxygen content can be better used.

[0033] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bottom thermal insulation structure for reducing oxygen content, characterized in that: including a base (1) and a connecting seat (10) arranged at the upper end of the base (1); a ventilation pipe (3) is arranged at the lower end of the base (1); an annular groove (5) is arranged at the inner side of the connecting seat (10), and a clamping pipe (9) is connected inside the connecting seat (10) at the upper end position of the annular groove (5); a heat preservation cylinder (8) is installed at the upper end of the annular groove (5) and at the outer side of the clamping pipe (9), and a placing groove (4) is arranged inside the clamping pipe (9); a protecting plate pressing piece (2) is placed at the inner side of the placing groove (4), a partition plate (6) is arranged at the upper end of the clamping pipe (9) and at the inner side of the heat preservation cylinder (8), and ventilation holes (7) are arranged at the upper inner positions of the protecting plate pressing piece (2) and the partition plate (6); a single crystal furnace body (11) is installed at the upper end of the base (1) and at the outer side of the connecting seat (10); Through the arrangement of the placing groove (4), the protecting plate pressing piece (2), the partition plate (6) and the ventilation holes (7), the bottom temperature is reduced, the intake of oxygen content is reduced, the pulverization of the furnace bottom heat preservation is reduced, and the service life of the furnace bottom heat preservation structure for reducing oxygen content is improved.

2. The bottom furnace insulation structure for reducing oxygen content according to claim 1, characterized in that: The base (1) and the clamping pipe (9) are of an integral structure, and both the base (1) and the clamping pipe (9) are hollow disc-shaped structures.

3. A bottom furnace insulation structure for reducing oxygen content according to claim 1, characterized in that: The placing groove (4) is embedded in the inner side of the clamping pipe (9), and the inner diameter of the placing groove (4) is equal to the outer diameter of the protecting plate pressing piece (2).

4. A bottom thermal insulation structure for reducing oxygen content according to claim 3, characterized in that: The protecting plate pressing piece (2) is connected with the placing groove (4) in a plug-in manner. Through the arrangement of the placing groove (4), the convenience of installing the protecting plate pressing piece (2) is enhanced, and through the arrangement of the protecting plate pressing piece (2), the stability of the partition plate (6) is enhanced.

5. A bottom furnace insulation structure for reducing oxygen content according to claim 2, characterized in that: an asbestos board (12) is arranged at the bottom end position inside the base (1), and a clay refractory layer (13) is arranged at the upper end position of the asbestos board (12).

6. A bottom furnace insulation structure for reducing oxygen content according to claim 5, characterized in that: a light carbon block layer (14) is arranged at the upper end position of the clay refractory layer (13), and a self-cultivated carbon block layer (15) is arranged at the upper end position of the light carbon block layer (14).

7. A bottom furnace insulation structure for reducing oxygen content according to claim 5, characterized in that: The thickness of the asbestos board (12) is ten millimeters, the clay refractory layer (13) is provided with three layers in total, and the thickness of each layer of the clay refractory layer (13) is four millimeters.

8. A bottom furnace insulation structure for reducing oxygen content according to claim 6, characterized in that: The light carbon block layer (14) is provided with three layers in total, the self-cultivated carbon block layer (15) is provided with five layers in total, and the thickness of each layer of the light carbon block layer (14) and the self-cultivated carbon block layer (15) is three millimeters. Through the arrangement of the asbestos board (12), the clay refractory layer (13), the light carbon block layer (14) and the self-cultivated carbon block layer (15), the thermal utilization rate of the furnace bottom heat preservation structure for reducing oxygen content is improved, and the energy consumption is reduced.

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