CN210892725U - Electrode sealing device - Google Patents
Electrode sealing device Download PDFInfo
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- CN210892725U CN210892725U CN201921662939.9U CN201921662939U CN210892725U CN 210892725 U CN210892725 U CN 210892725U CN 201921662939 U CN201921662939 U CN 201921662939U CN 210892725 U CN210892725 U CN 210892725U
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- electrode
- sealing gasket
- insulating ring
- heat insulation
- electrode body
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Abstract
The utility model provides an electrode sealing device. Relate to sealing device technical field, concretely relates to electrode sealing device. The structure is compact, the fit clearance of the electrode structure is small, and the sealing effect is good. The electrode comprises an electrode body penetrating through the bottom of a furnace body, wherein a boss is arranged on the outer wall of the electrode body, a first sealing gasket, an outer insulating ring and a second sealing gasket are sequentially clamped between the bottom of the boss and the bottom of the furnace body from top to bottom, and a shaft sleeve is sleeved at the bottom end of the electrode body and is positioned between the electrode body and the bottom of the furnace body; one side of the inner insulating ring facing the electrode body is provided with a counter bore, a transverse screw rod is arranged above the bottom of the furnace body and sequentially penetrates through the counter bore, the accommodating groove, the second sealing gasket and the heat insulation sleeve, the tail of the screw rod is located in the counter bore, the head of the screw rod is provided with a knob connected with the screw rod through an internal thread, and the knob is located on the outer side of the heat insulation sleeve.
Description
Technical Field
The utility model relates to a sealing device technical field, concretely relates to electrode sealing device.
Background
The improved Siemens process is the main international production process of polycrystalline silicon, and the polycrystalline silicon produced by the method accounts for about 85 percent of the global production of the polycrystalline silicon. The method is characterized in that a silicon core is arranged in a reactor of a reduction furnace, silicon is deposited on the silicon core under certain conditions, then a silicon rod grows, high-purity polycrystalline silicon is prepared, and byproducts such as silicon powder and the like are generated, wherein an electrode structure and an insulation mode in the reactor of the reduction furnace are key technologies for the operation of the reduction furnace.
However, in the prior art, since the electrode structure has the problems of large fit clearance and poor sealing effect, the risk in the production process is increased, the success rate of one-time high-voltage breakdown is directly affected, the production cost of polysilicon is increased, and the purpose of long-term continuous production cannot be achieved, so that the electrode sealing device with small fit clearance and good sealing effect of the electrode structure is designed to solve the technical problem urgently to those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides an electrode sealing device which has compact structure, small fit clearance of an electrode structure and good sealing effect.
The utility model discloses a following technical scheme realizes: the electrode sealing device comprises an electrode body penetrating through the bottom of the furnace body, wherein a boss is arranged on the outer wall of the electrode body, a first sealing gasket, an outer insulating ring and a second sealing gasket are sequentially clamped between the bottom of the boss and the bottom of the furnace body from top to bottom, and a shaft sleeve is sleeved at the bottom end of the electrode body and is positioned between the electrode body and the bottom of the furnace body;
the sealing device also comprises a heat insulation sleeve, and the heat insulation sleeve is arranged at the bottom of the furnace body and sheathed at the outer edges of the boss, the first sealing gasket, the outer insulating ring and the second sealing gasket;
an inner insulating ring is further arranged between the outer insulating ring and the electrode body, the upper part of the inner insulating ring is positioned between the outer insulating ring and the electrode body, and the lower part of the inner insulating ring is arranged between the bottom end of the electrode body and the bottom of the furnace body and is embedded outside the shaft sleeve;
an accommodating groove is formed in the outer edge of the inner insulating ring, a notch of the accommodating groove faces the heat insulation sleeve, the cross section of the second sealing gasket is triangular, the inclined surface of the second sealing gasket faces the heat insulation sleeve, the second sealing gasket is arranged in the accommodating groove, and the lower end of the second sealing gasket extends out of the accommodating groove;
one side of the inner insulating ring facing the electrode body is provided with a counter bore, a transverse screw rod is arranged above the bottom of the furnace body and sequentially penetrates through the counter bore, the accommodating groove, the second sealing gasket and the heat insulation sleeve, the tail of the screw rod is located in the counter bore, the head of the screw rod is provided with a knob connected with the screw rod through an internal thread, and the knob is located on the outer side of the heat insulation sleeve.
The bottom of the boss is provided with a plurality of saw teeth.
The outer edge of the heat insulation sleeve is annularly provided with a groove.
One side of the outer insulating ring, which faces the bottom of the second sealing gasket, is matched with the inclined plane of the second sealing gasket.
Compared with the prior art, the sawtooth is arranged at the bottom of the boss, and the sawtooth pierces into the first sealing gasket, so that the sealing performance is greatly improved, and the connecting strength between the boss and the first sealing gasket is also improved; through the cooperation of the screw rod and the knob, the contact between the bottom of the heat insulation sleeve and the outer insulation ring is tighter, the sealing performance among the inner insulation ring, the outer insulation ring and the heat insulation sleeve is increased, the silicon powder or high-temperature gas is prevented from entering, further, the screw rod is rotated due to the fact that the second sealing gasket is in threaded connection with the screw rod, the second sealing gasket moves towards the outside of the containing groove, the outer insulation ring is jacked upwards due to the fact that the inclined plane of the second sealing gasket faces towards the outer insulation ring, the meshing tightness between the first sealing gasket and the boss is enhanced again due to the fact that the second sealing gasket moves towards the outer insulation ring, and the connection sealing performance is improved; the distance between the knob and the tail of the screw rod is shrunk, so that the connection tightness between the inner insulating ring and the bottom of the furnace body is increased, the possibility that high-temperature gas contacts the shaft sleeve or the electrode body is reduced again, and the durability of the device is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a reference diagram of the action state of the present invention;
in the figure: 1. the bottom of the furnace body;
2. an electrode body; 21. a boss; 210. saw teeth;
3. a first gasket;
4. an outer insulating ring;
5. a second gasket;
6. a shaft sleeve;
7. a heat insulating sleeve; 70. a groove;
8. an inner insulating ring; 81. a containing groove; 82. a counter bore; 83. a screw; 84. a knob.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
As shown in fig. 1-2, the electrode sealing device comprises an electrode body 2 penetrating through a bottom 1 of a furnace body, wherein a boss 21 is arranged on the outer wall of the electrode body 2, a first sealing gasket 3, an outer insulating ring 4 and a second sealing gasket 5 are sequentially clamped between the bottom of the boss 21 and the bottom 1 of the furnace body from top to bottom, a shaft sleeve 6 is sleeved at the bottom end of the electrode body 2, and the shaft sleeve 6 is positioned between the electrode body 2 and the bottom 1 of the furnace body;
the sealing device also comprises a heat insulation sleeve 7, wherein the heat insulation sleeve 7 is arranged at the bottom 1 of the furnace body and sheathed at the outer edges of the boss 21, the first sealing gasket 3, the outer insulating ring 4 and the second sealing gasket 5; the upper part of the heat insulation sleeve 7 can extend to the top surface of the boss 21, that is, the heat insulation sleeve 7 comprises a vertical part and a horizontal part, the vertical part wraps the outer edges of the boss 21, the first sealing gasket 3, the outer insulating ring 4 and the second sealing gasket 5, and the horizontal part wraps the top surface of the boss 21 (only the outer edge of the top surface needs to be covered), so that the heat insulation effect is achieved, the electrode or any one of the first sealing gasket 3, the outer insulating ring 4 and the second sealing gasket 5 is prevented from being damaged by high temperature, and the reliability of the sealing device is ensured;
an inner insulating ring 8 is further arranged between the outer insulating ring 4 and the electrode body 2, the upper part of the inner insulating ring 8 is positioned between the outer insulating ring 4 and the electrode body 2, and the lower part of the inner insulating ring 8 is arranged between the bottom end of the electrode body 2 and the bottom 1 of the furnace body and is embedded outside the shaft sleeve 6; the inner insulating ring 8 prevents the high-temperature gas tetrafluoro sleeve from carbonizing, so that the service life of the shaft sleeve 6 is prolonged, the production cost is reduced, and meanwhile, the second sealing gasket 5 also prevents the high-temperature gas from entering the shaft sleeve 6 to carbonize, so that the service life of the shaft sleeve 6 is prolonged, and the production cost is reduced;
an accommodating groove 81 is formed in the outer edge of the inner insulating ring 8, a notch of the accommodating groove 81 faces the heat insulation sleeve 7, the cross section of the second sealing gasket 5 is triangular, the inclined surface of the second sealing gasket 5 faces the heat insulation sleeve 7, and the second sealing gasket 5 is arranged in the accommodating groove 81 and the lower end of the second sealing gasket extends out of the accommodating groove 81;
one side of interior insulating ring 8 towards electrode body 2 is equipped with counter bore 82, the top of furnace body bottom 1 is equipped with horizontal screw rod 83, screw rod 83 passes in proper order counter bore 82, storage tank 81, the sealed 5 of second and radiation shield 7, the afterbody of screw rod 83 is located counter bore 82, the head of screw rod 83 is equipped with the knob of being connected through internal thread and screw rod 83, the knob is located the radiation shield 7 outside. The knob is rotated to shorten the distance between the knob and the tail of the screw 83, so that the bottom of the heat insulation sleeve 7 is in closer contact with the outer insulation ring 4, the sealing performance among the inner insulation ring 8, the outer insulation ring 4 and the heat insulation sleeve 7 is increased, and the silicon powder or high-temperature gas is prevented from entering; the distance between the knob and the tail part of the screw 83 is shortened, so that the connection tightness between the inner insulating ring 8 and the bottom 1 of the furnace body is increased, the possibility that high-temperature gas contacts the shaft sleeve 6 or the electrode body 2 is reduced, and the durability of the device is improved.
The first sealing gasket 3, the outer insulating ring 4 and the second sealing gasket 5 are clamped in a notch formed by the boss 21 and the furnace body bottom 1 and are matched tightly, so that the situation that silicon powder enters a gap between electrode structures due to air field flowing during the operation of the reduction furnace to cause grounding parking of the reduction furnace is avoided, and the shaft sleeve 6 can be a polytetrafluoroethylene sleeve and has the characteristics of high temperature resistance, corrosion resistance, wear resistance and self-lubrication, so that the service time of the shaft sleeve 6 is prolonged, and the production continuity is improved.
The bottom of the boss 21 is provided with a plurality of saw teeth 210. Set up sawtooth 210 in boss 21 bottom, in the sawtooth 210 pierces first sealed pad 3, improved the leakproofness greatly, also improved the joint strength between boss 21 and the first sealed pad 3.
The outer edge of the heat insulation sleeve 7 is annularly provided with a groove 70. The position of the groove 70 is located above the screw 83, and is used for releasing stress generated on the heat insulation sleeve 7 due to the fact that the distance between the knob and the tail of the screw 83 is shortened, so that the heat insulation sleeve 7 is prevented from being broken, heat insulation reliability is guaranteed, and stability of the device is improved.
One side of the outer insulating ring 4, which faces the bottom of the second sealing gasket 5, is matched with the inclined surface of the second sealing gasket 5. In this way, the sliding of the outer insulating ring 4 on the second gasket 5 is facilitated.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (4)
1. Electrode sealing device, its characterized in that: the electrode comprises an electrode body penetrating through the bottom of a furnace body, wherein a boss is arranged on the outer wall of the electrode body, a first sealing gasket, an outer insulating ring and a second sealing gasket are sequentially clamped between the bottom of the boss and the bottom of the furnace body from top to bottom, and a shaft sleeve is sleeved at the bottom end of the electrode body and is positioned between the electrode body and the bottom of the furnace body;
the sealing device also comprises a heat insulation sleeve, and the heat insulation sleeve is arranged at the bottom of the furnace body and sheathed at the outer edges of the boss, the first sealing gasket, the outer insulating ring and the second sealing gasket;
an inner insulating ring is further arranged between the outer insulating ring and the electrode body, the upper part of the inner insulating ring is positioned between the outer insulating ring and the electrode body, and the lower part of the inner insulating ring is arranged between the bottom end of the electrode body and the bottom of the furnace body and is embedded outside the shaft sleeve;
an accommodating groove is formed in the outer edge of the inner insulating ring, a notch of the accommodating groove faces the heat insulation sleeve, the cross section of the second sealing gasket is triangular, the inclined surface of the second sealing gasket faces the heat insulation sleeve, the second sealing gasket is arranged in the accommodating groove, and the lower end of the second sealing gasket extends out of the accommodating groove;
one side of the inner insulating ring facing the electrode body is provided with a counter bore, a transverse screw rod is arranged above the bottom of the furnace body and sequentially penetrates through the counter bore, the accommodating groove, the second sealing gasket and the heat insulation sleeve, the tail of the screw rod is located in the counter bore, the head of the screw rod is provided with a knob connected with the screw rod through an internal thread, and the knob is located on the outer side of the heat insulation sleeve.
2. The electrode sealing device according to claim 1, wherein: the bottom of the boss is provided with a plurality of saw teeth.
3. The electrode sealing device according to claim 1, wherein: the outer edge of the heat insulation sleeve is annularly provided with a groove.
4. The electrode sealing device according to claim 1, wherein: one side of the outer insulating ring, which faces the bottom of the second sealing gasket, is matched with the inclined plane of the second sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921662939.9U CN210892725U (en) | 2019-09-30 | 2019-09-30 | Electrode sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921662939.9U CN210892725U (en) | 2019-09-30 | 2019-09-30 | Electrode sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210892725U true CN210892725U (en) | 2020-06-30 |
Family
ID=71316348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921662939.9U Active CN210892725U (en) | 2019-09-30 | 2019-09-30 | Electrode sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210892725U (en) |
-
2019
- 2019-09-30 CN CN201921662939.9U patent/CN210892725U/en active Active
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