Electrode structure with disassembly-free inner ring

Abstract

The utility model discloses an electrode structure of exempting from to dismantle inner ring relates to the technical field of reduction furnace, and the inside of insulating sleeve lower half portion is closely combined with electrode body, and the outside of insulating sleeve is closely combined with reduction base plate, the upper half portion of insulating sleeve is installed by loose arrangement optimization for tight arrangement with insulating inner ring, and the outside of insulating sleeve top is reserved outer ring groove, and after insulating outer ring installation, further block the interval between insulating sleeve and insulating inner ring of silicon powder into, the installation between insulating inner ring and electrode body is optimized for tight arrangement by loose arrangement, and the installation interval is reduced, and the silicon powder deposition in interval is reduced, and the top of insulating outer ring extends to be close to electrode body, and the inner ring is completely covered. The utility model has the advantages of the following: the tight installation of insulating inner ring eliminates the interval between insulating inner ring and electrode body, insulating sleeve, and reduces the silicon powder deposition, the insulating inner ring exempts from to dismantle, and effectively reduces the artificial operation workload and the loss in use process.

Description

Technical Field

[0001] This utility model belongs to the field of reduction furnace technology, specifically relating to an electrode structure that does not require disassembly of the inner ring. Background Technology

[0002] The existing electrode structure for a reduction furnace is as follows: The electrode structure consists of an electrode body, an insulating sleeve, an inner insulating ring, and an outer insulating ring. The insulating sleeve is made of polytetrafluoroethylene (PTFE). The inner side of the lower half of the insulating sleeve is tightly fitted to the electrode body, and the outer side is tightly fitted to the reduction furnace base. A certain space exists between the inner side of the upper half of the insulating sleeve and the electrode body for installing the inner insulating ring. The outer side of the upper half of the insulating sleeve is tightly fitted to the reduction furnace base, allowing for heat transfer and cooling. The inner insulating ring is made of silicon nitride and is installed in the space between the electrode body and the inner insulating ring. The installation of the inner ring with the electrode body and the insulating sleeve is a loose fit (i.e., there is a certain gap, allowing for free removal and placement). The outer insulating ring is also made of silicon nitride and is installed outside the electrode body and the inner insulating ring. The installation of the outer insulating ring with the electrode body is also a loose fit (there is a certain space, allowing for free removal and placement).

[0003] After the inner and outer insulating rings are installed with the electrode body, they can be freely removed and placed, leaving a certain gap. During the operation of the reduction furnace, the generated silicon powder enters the gap between the inner and outer insulating rings and adheres to their surfaces. After the furnace is shut down, they need to be disassembled, cleaned, transferred, and dried before reuse. Simultaneously, during operation, the silicon powder adhering to the surface reduces insulation, leading to electrode arcing, affecting product quality or damaging equipment, and in severe cases, potentially causing safety accidents. Utility Model Content

[0004] The purpose of this invention is to solve the problems of existing technologies and provide an electrode structure that eliminates the need for disassembling the inner ring. The lower half of the insulating sleeve is tightly fitted to the electrode body, and the outer side of the insulating sleeve is tightly fitted to the reduction base. The installation of the upper half of the insulating sleeve and the insulating inner ring is changed from a loose fit to a tight fit. An outer ring groove is pre-reserved on the outer top of the insulating sleeve, further preventing silicon powder from entering the gap between the insulating sleeve and the insulating inner ring after the insulating outer ring is installed. The installation between the insulating inner ring and the electrode body is optimized from a loose fit to a tight fit, reducing the installation gap and minimizing silicon powder deposition within the gap. The top of the insulating outer ring extends close to the electrode body, completely covering the inner ring. This invention has the following advantages: the tight fit of the insulating inner ring eliminates the gap between the insulating inner ring and the electrode body and insulating sleeve, reducing silicon powder deposition; the insulating inner ring eliminates the need for disassembly, effectively reducing manual operation workload and wear during use.

[0005] This utility model is achieved through the following technical solution: An electrode structure with a non-removable inner ring includes an electrode body, an insulating sleeve, an insulating inner ring, and an insulating outer ring. The upper end of the insulating sleeve is provided with a first inner ring insertion groove that matches the insulating inner ring and a reserved outer ring groove that matches the insulating outer ring. The inner ring of the insulating outer ring is provided with a second inner ring insertion groove that matches the insulating inner ring and an electrode through hole that matches the electrode body. The insulating sleeve, the insulating inner ring, and the insulating outer ring are sequentially sleeved on the electrode body.

[0006] Preferably, the upper side of the insulating outer ring is concave arc-shaped.

[0007] Preferably, the lower end of the insulating outer ring is provided with an annular baffle that matches the reserved outer ring groove.

[0008] Preferably, the inner diameter of the first inner ring insertion groove is the same as the outer diameter of the insulating inner ring; the inner diameter tolerance of the first inner ring insertion groove is controlled to be +0.1 to +0.2 mm, and the outer diameter tolerance of the insulating inner ring is controlled to be -0.1 to -0.05 mm.

[0009] Preferably, the outer diameter of the reserved outer ring groove is the same as the inner diameter of the insulating outer ring; the outer diameter tolerance of the reserved outer ring groove is controlled to be -0.2 to -0.1 mm, and the inner diameter tolerance of the insulating outer ring is controlled to be +0.05 to +0.1 mm.

[0010] Preferably, the inner diameter of the lower end of the insulating sleeve, the inner diameter of the insulating inner ring, and the diameter of the electrode perforation are all consistent with the outer diameter of the electrode body; the tolerance of the inner diameter of the lower end of the insulating sleeve, the tolerance of the inner diameter of the insulating inner ring, and the tolerance of the diameter of the electrode perforation are all controlled to be +0.1 to +0.2 mm, and the tolerance of the outer diameter of the electrode body is controlled to be -0.02 to 0 mm.

[0011] Preferably, the lower end of the insulating sleeve is provided with an insulating base, a sealing gasket, and a locking nut in sequence.

[0012] Preferably, the insulating sleeve is made of polytetrafluoroethylene.

[0013] Preferably, both the inner insulating ring and the outer insulating ring are made of silicon nitride.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects: I. This utility model provides an electrode structure with a non-removable inner ring. The lower half of the insulating sleeve is tightly fitted to the electrode body, and the outer side of the insulating sleeve is tightly fitted to the reduction base. The installation of the upper half of the insulating sleeve and the insulating inner ring is changed from a loose fit to a tight fit. An outer ring groove is reserved on the outer side of the top of the insulating sleeve. After the insulating outer ring is installed, it further prevents silicon powder from entering the gap between the insulating sleeve and the insulating inner ring. The installation between the insulating inner ring and the electrode body is optimized from a loose fit to a tight fit, reducing the installation gap and reducing silicon powder deposition in the gap. The top of the insulating outer ring extends close to the electrode body, completely covering the inner ring. This utility model has the following advantages: the tight fit of the insulating inner ring eliminates the gap between the insulating inner ring and the electrode body and the insulating sleeve, reducing silicon powder deposition; the insulating inner ring does not need to be disassembled, effectively reducing the amount of manual operation and wear during use.

[0015] II. The present invention provides an electrode structure that does not require disassembly of the inner ring. The annular baffle matches the reserved outer ring groove, which can effectively reduce the amount of silicon powder entering the electrode groove.

[0016] III. The present invention provides an electrode structure that does not require disassembly of the inner ring. The concave arc structure prevents the silicon powder from adhering to the chassis and conducting electricity to ground. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the insulating sleeve in this utility model; Figure 3 This is a schematic diagram of the insulating inner ring in this utility model; Figure 4 This is a schematic diagram of the insulating outer ring in this utility model; The components are: 1. Electrode body; 2. Insulating sleeve; 21. First inner ring insertion groove; 22. Reserved outer ring groove; 3. Insulating inner ring; 4. Insulating outer ring; 41. Second inner ring insertion groove; 42. Electrode perforation; 43. Annular baffle; 5. Insulating base; 6. Sealing gasket; 7. Locking nut. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0019] Example 1 like Figures 1-4As shown, an electrode structure with a non-removable inner ring includes an electrode body 1, an insulating sleeve 2, an insulating inner ring 3, and an insulating outer ring 4. The upper end of the insulating sleeve 2 is provided with a first inner ring insertion groove 21 that matches the insulating inner ring 3 and a reserved outer ring groove 22 that matches the insulating outer ring 4. The insulating outer ring 4 is provided with a second inner ring insertion groove 41 that matches the insulating inner ring 3 and an electrode through hole 42 that matches the electrode body 1. The insulating sleeve 2, the insulating inner ring 3, and the insulating outer ring 4 are sequentially sleeved on the electrode body 1.

[0020] Example 2 like Figures 1-4 As shown, an electrode structure with a non-removable inner ring includes an electrode body 1, an insulating sleeve 2, an insulating inner ring 3, and an insulating outer ring 4. The upper end of the insulating sleeve 2 is provided with a first inner ring insertion groove 21 that matches the insulating inner ring 3 and a reserved outer ring groove 22 that matches the insulating outer ring 4. The insulating outer ring 4 is provided with a second inner ring insertion groove 41 that matches the insulating inner ring 3 and an electrode through hole 42 that matches the electrode body 1. The insulating sleeve 2, the insulating inner ring 3, and the insulating outer ring 4 are sequentially sleeved on the electrode body 1.

[0021] The upper side of the insulating outer ring 4 is concave arc-shaped.

[0022] The lower end of the insulating outer ring 4 is provided with an annular baffle 43 that matches the reserved outer ring groove 22.

[0023] The inner diameter of the first inner ring insertion groove 21 is the same as the outer diameter of the insulating inner ring 3; the inner diameter tolerance of the first inner ring insertion groove 21 is controlled to be +0.1 to +0.2 mm, and the outer diameter tolerance of the insulating inner ring 3 is controlled to be -0.1 to -0.05 mm.

[0024] The outer diameter of the reserved outer ring groove 22 is the same as the inner diameter of the insulating outer ring 4; the outer diameter tolerance of the reserved outer ring groove 22 is controlled to be -0.2 to -0.1 mm, and the inner diameter tolerance of the insulating outer ring 4 is controlled to be +0.05 to +0.1 mm.

[0025] The inner diameter of the lower end of the insulating sleeve 2, the inner diameter of the insulating inner ring 3, and the diameter of the electrode through hole 42 are all consistent with the outer diameter of the electrode body 1; the tolerance of the inner diameter of the lower end of the insulating sleeve 2, the tolerance of the inner diameter of the insulating inner ring 3, and the tolerance of the diameter of the electrode through hole 42 are all controlled to be +0.1 to +0.2 mm, and the tolerance of the outer diameter of the electrode body 1 is controlled to be -0.02 to 0 mm.

[0026] The lower end of the insulating sleeve 2 is provided with an insulating base 5, a sealing gasket 6 and a locking nut 7 in sequence.

[0027] The insulating sleeve 2 is made of polytetrafluoroethylene.

[0028] Both the inner insulating ring 3 and the outer insulating ring 4 are made of silicon nitride.

[0029] Compared with the prior art, this utility model has the following advantages and beneficial effects: I. This utility model provides an electrode structure with a non-removable inner ring. The lower half of the insulating sleeve 2 is tightly fitted to the inner side of the electrode body 1, and the outer side of the insulating sleeve 2 is tightly fitted to the reduction base. The installation of the upper half of the insulating sleeve 2 and the insulating inner ring 3 is changed from a loose fit to a tight fit. An outer ring groove 22 is reserved on the outer side of the top of the insulating sleeve 2. After the insulating outer ring 4 is installed, it further prevents silicon powder from entering the gap between the insulating sleeve 2 and the insulating inner ring 3. The installation between the insulating inner ring 3 and the electrode body 1 is optimized from a loose fit to a tight fit, reducing the installation gap and reducing silicon powder deposition in the gap. The top of the insulating outer ring 4 extends close to the electrode body 1, completely covering the inner ring. This utility model has the following advantages: the insulating inner ring 3 is installed with a tight fit, eliminating the gap between the insulating inner ring 3 and the electrode body 1 and the insulating sleeve 2, reducing silicon powder deposition; the insulating inner ring 3 does not need to be disassembled, effectively reducing the amount of manual operation and wear during use.

[0030] II. The present invention provides an electrode structure that does not require disassembly of the inner ring. The annular baffle 43 matches the reserved outer ring groove 22, which can effectively reduce the entry of silicon powder into the electrode groove.

[0031] III. The present invention provides an electrode structure that does not require disassembly of the inner ring. The concave arc structure prevents the silicon powder from adhering to the chassis and conducting electricity to ground.

[0032] Example 3 The difference between this embodiment and Embodiment 1 is as follows: the insulating sleeve 2 is made of polytetrafluoroethylene. The inner side of the lower half of the insulating sleeve 2 is tightly fitted with the electrode body 1, and the outer side of the insulating sleeve 2 is tightly fitted with the reduction base. The upper half of the insulating sleeve 2 is appropriately thickened, and the installation with the inner insulating ring 3 is changed from a loose fit to a tight fit (no gap, reducing the entry of silicon powder). An outer ring groove 22 is reserved on the outer side of the top of the insulating sleeve 2. After the outer insulating ring 4 is installed, it further prevents silicon powder from entering the gap between the insulating sleeve 2 and the inner insulating ring 3. The thickness of the inner insulating ring 3 is appropriately thickened, and the installation between the inner insulating ring 3 and the electrode body 1 is optimized from a loose fit to a tight fit, reducing the installation gap and reducing silicon powder deposition in the gap. The outer insulating ring 4 is thickened and optimized into an irregular structure. The top of the outer insulating ring 4 extends close to the electrode body 1, completely covering the inner insulating ring 3. An annular baffle 43 is added to the bottom of the outer insulating ring 4 (matching the reserved outer ring groove 22 on the top of the insulating sleeve 2), which can effectively reduce the entry of silicon powder into the electrode groove. The upper side of the outer insulating ring 4 has an inwardly concave arc structure to prevent silicon powder from adhering and connecting to the base for conductive grounding.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An electrode structure that does not require disassembly of the inner ring, characterized in that: The device includes an electrode body (1), an insulating sleeve (2), an insulating inner ring (3), and an insulating outer ring (4). The upper end of the insulating sleeve (2) is provided with a first inner ring insertion groove (21) that matches the insulating inner ring (3) and a reserved outer ring groove (22) that matches the insulating outer ring (4). The insulating outer ring (4) is provided with a second inner ring insertion groove (41) that matches the insulating inner ring (3) and an electrode through hole (42) that matches the electrode body (1). The electrode body (1) is sequentially fitted with the insulating sleeve (2), the insulating inner ring (3), and the insulating outer ring (4).

2. The electrode structure with a non-disassembly inner ring according to claim 1, characterized in that: The upper side of the insulating outer ring (4) is concave arc-shaped.

3. The electrode structure of the non-disassembly inner ring according to claim 1, characterized in that: The lower end of the insulating outer ring (4) is provided with an annular baffle (43) that matches the reserved outer ring groove (22).

4. The electrode structure of the non-disassembly inner ring according to claim 1, characterized in that: The inner diameter of the first inner ring insertion groove (21) is consistent with the outer diameter of the insulating inner ring (3); the inner diameter tolerance of the first inner ring insertion groove (21) is controlled to be +0.1 to +0.2 mm, and the outer diameter tolerance of the insulating inner ring (3) is controlled to be -0.1 to -0.05 mm.

5. The electrode structure of the non-removable inner ring according to claim 1, characterized in that: The outer diameter of the reserved outer ring groove (22) is consistent with the inner diameter of the insulating outer ring (4); the outer diameter tolerance of the reserved outer ring groove (22) is controlled to be -0.2 to -0.1 mm, and the inner diameter tolerance of the insulating outer ring (4) is controlled to be +0.05 to +0.1 mm.

6. The electrode structure of the non-disassembly inner ring according to claim 1, characterized in that: The inner diameter of the lower end of the insulating sleeve (2), the inner diameter of the insulating inner ring (3), and the diameter of the electrode through hole (42) are all consistent with the outer diameter of the electrode body (1); the tolerance of the inner diameter of the lower end of the insulating sleeve (2), the tolerance of the inner diameter of the insulating inner ring (3), and the tolerance of the diameter of the electrode through hole (42) are all controlled to be +0.1 to +0.2 mm, and the tolerance of the outer diameter of the electrode body (1) is controlled to be -0.02 to 0 mm.

7. The electrode structure of the non-disassembly inner ring according to claim 1, characterized in that: The lower end of the insulating sleeve (2) is provided with an insulating base (5), a sealing gasket (6) and a locking nut (7) in sequence.

8. The electrode structure of the non-disassembly inner ring according to claim 1, characterized in that: The insulating sleeve (2) is made of polytetrafluoroethylene.

9. The electrode structure with a non-disassembly inner ring according to claim 1, characterized in that: Both the inner insulating ring (3) and the outer insulating ring (4) are made of silicon nitride.

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