CN113532122A - Sealing furnace cover for aluminum ingot smelting furnace - Google Patents
Sealing furnace cover for aluminum ingot smelting furnace Download PDFInfo
- Publication number
- CN113532122A CN113532122A CN202110883941.4A CN202110883941A CN113532122A CN 113532122 A CN113532122 A CN 113532122A CN 202110883941 A CN202110883941 A CN 202110883941A CN 113532122 A CN113532122 A CN 113532122A
- Authority
- CN
- China
- Prior art keywords
- furnace
- furnace cover
- sealing
- annular cavity
- trapezoidal ring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids, removable covers
- F27D1/1808—Removable covers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0073—Seals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids, removable covers
- F27D1/1808—Removable covers
- F27D2001/1825—Means for moving the cover
Abstract
A sealed furnace cover for an aluminum ingot smelting furnace is characterized in that a trapezoidal ring groove is formed in the upper end face of a furnace body, a trapezoidal ring table is arranged on the lower end face of the furnace cover, after the furnace cover is combined with the furnace body, the inclined plane of the trapezoidal ring groove and the inclined plane of the trapezoidal ring table form a sealed matching surface, an annular cavity is formed between the bottom surface of the trapezoidal ring groove and the bottom surface of the trapezoidal ring table, and the annular cavity is connected with an external gas circuit control device through a gas passage; a plurality of corner cylinders are uniformly distributed on the furnace body and are connected with a gas circuit control device; when the furnace cover is closed, the gas circuit control device extracts gas in the annular cavity, so that negative pressure is formed in the annular cavity, and the corner cylinder presses the furnace cover tightly; when the furnace cover is opened, the pressure is released for the annular cavity, and the corner cylinder is separated from pressing the furnace cover. The invention can realize the sealing connection between the furnace cover and the furnace body in a cold and hot state, can isolate the air from entering, and improves the smelting quality of aluminum.
Description
Technical Field
The invention relates to the field of aluminum processing, in particular to a sealing furnace cover for an aluminum ingot smelting furnace.
Background
The melting of aluminium requires the exclusion of air, in particular hydrogen and oxygen. The hydrogen and oxygen can cause shrinkage cavities, air holes and slag inclusion of aluminum castings, so that a furnace cover of the smelting furnace needs to be sealed during smelting. The existing furnace cover is provided with a longer stirrer, so that the furnace cover and the furnace body are not connected by a hinge generally, but are connected by a hoisting mode, and higher requirements are provided for the connection and the sealing of the furnace cover and the furnace body. When the existing furnace cover is hoisted with a furnace body, sealing materials are easily crushed due to dislocation, so that air permeates into the furnace, and the smelting quality of aluminum castings is influenced.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses a sealing furnace cover for an aluminum ingot smelting furnace, which adopts the following technical scheme:
a sealed furnace cover for an aluminum ingot smelting furnace is characterized in that a trapezoidal ring groove is formed in the upper end face of a furnace body, a trapezoidal ring table is arranged on the lower end face of the furnace cover, after the furnace cover is combined with the furnace body, the inclined plane of the trapezoidal ring groove and the inclined plane of the trapezoidal ring table form a sealed matching surface, an annular cavity is formed between the bottom surface of the trapezoidal ring groove and the bottom surface of the trapezoidal ring table, and the annular cavity is connected with an external gas circuit control device through a gas passage; a plurality of corner cylinders are uniformly distributed on the furnace body and are connected with a gas circuit control device; when the furnace cover is closed, the gas circuit control device extracts gas in the annular cavity, so that negative pressure is formed in the annular cavity, and the corner cylinder presses the furnace cover tightly; when the furnace cover is opened, the pressure is released for the annular cavity, and the corner cylinder is separated from pressing the furnace cover.
Further improve technical scheme, be equipped with the sealing ring groove in the inboard or the outside of trapezoidal annular groove, pack high temperature resistant sealing material in the sealing ring groove.
Further improve technical scheme, the bell is equipped with rings, observation window and exhanst gas outlet, the air flue is established on the furnace body.
According to the technical scheme, the air path control device comprises a negative pressure control unit and a corner cylinder control unit, wherein the negative pressure control unit comprises a vacuum pump and a first reversing valve, and the first reversing valve is arranged between the vacuum pump and an air passage; the corner cylinder control unit comprises an air pump and a second reversing valve, wherein the second reversing valve is arranged between the air pump and the corner cylinder.
The technical scheme is further improved, a first one-way valve is arranged between the vacuum pump and the first reversing valve, and a second one-way valve is arranged between the air pump and the second reversing valve.
Further improve technical scheme, first switching-over valve, second switching-over valve are the solenoid directional valve.
Further improve technical scheme, be provided with the gas holder between second check valve and second switching-over valve.
Due to the adoption of the technical scheme, compared with the background technology, the invention has the following beneficial effects:
the invention is characterized in that the upper end surface of the furnace body is provided with a trapezoidal ring groove, the lower end surface of the furnace cover is provided with a trapezoidal ring platform, after the furnace cover is combined with the furnace body, the inclined surface of the trapezoidal ring groove and the inclined surface of the trapezoidal ring platform form two sealing matching surfaces, and when the furnace cover or the furnace body expands due to heat, at least one matching surface can ensure the sealing contact of the furnace cover and the furnace body. Therefore, the sealing structure can realize the sealing of the furnace cover and the furnace body in a cold and hot state.
In addition, because the inclined plane has the guide effect, when hoist and mount, the bell can automatic alignment, easily realizes being connected with the cooperation of furnace body. Because the annular cavity 3 has negative pressure, air can not enter the furnace all the time, and the smelting of aluminum can not be influenced.
The invention can realize the sealing connection between the furnace cover and the furnace body in a cold and hot state, can isolate the air from entering, and improves the smelting quality of aluminum.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the gas circuit of the present invention.
In the figure: 1. a furnace body; 2. a furnace cover; 3. an annular cavity; 4. graphite packing; 5. a hoisting ring; 6. a corner cylinder; 7. a vacuum pump; 8. a first check valve; 9. a first direction changing valve; 10. an air pump; 11. a second one-way valve; 12. a gas storage tank; 13. a second directional control valve; 14. an airway.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
A sealed furnace cover for an aluminum ingot smelting furnace is disclosed, as shown in figure 1-2, a trapezoidal ring groove is arranged on the upper end face of a furnace body 1, a trapezoidal ring platform is arranged on the lower end face of the furnace cover 2, after the furnace cover 2 is combined with the furnace body 1, the inclined plane of the trapezoidal ring groove and the inclined plane of the trapezoidal ring platform form a sealed matching surface, an annular cavity 3 is formed between the bottom surface of the trapezoidal ring groove and the bottom surface of the trapezoidal ring platform, an air passage 14 is arranged on the furnace body 1, and the annular cavity 3 is connected with an air passage control device arranged outside through the air passage 14. A plurality of corner cylinders 6 are uniformly distributed on the upper end surface of the furnace body 1, and the corner cylinders 6 are connected with a gas circuit control device. It is worth noting that two sealing matching surfaces of the trapezoidal ring groove and the trapezoidal ring platform are matched in an inclined plane, when the furnace cover 2 or the furnace body 1 expands due to heat, at least one matching surface can ensure the sealing contact of the furnace cover 2 and the furnace body 1, and therefore the sealing structure can realize the sealing of the furnace cover 2 and the furnace body 1 in a cold and hot state. In addition, because the inclined plane has the guide effect, when hoist and mount, the bell can automatic alignment, easily realizes being connected with the cooperation of furnace body.
For the sake of safety, sealing ring grooves are arranged on the inner side and the outer side of the trapezoidal ring groove, high-temperature-resistant sealing materials are filled in the sealing ring grooves, the high-temperature-resistant sealing materials are graphite packing 4, the graphite packing 4 has certain compressibility, and it is guaranteed that the matching surface formed by the inclined surface of the trapezoidal ring groove and the inclined surface of the trapezoidal ring platform cannot be over-positioned. A lifting ring 5 for lifting the furnace cover 2, a viewing window, a flue gas outlet and an agitator are also provided on the furnace cover 2, but these are not relevant to the patent and will not be described further here.
The air path control device comprises a negative pressure control unit and a corner cylinder 6 control unit, wherein the negative pressure control unit is connected with the air passage 14 and used for controlling the air pressure in the annular cavity 3. Specifically, the negative pressure control unit comprises a vacuum pump 7, a first one-way valve 8 and a first reversing valve 9, wherein the first one-way valve 8 and the first reversing valve 9 are arranged between the vacuum pump 7 and the air passage 14. When the furnace cover 2 is closed, the vacuum pump 7 extracts gas in the annular cavity 3, so that negative pressure is formed in the annular cavity 3, the pressing force of the furnace cover 2 on the furnace body 1 is increased by the negative pressure, and the sealing of a matching surface is facilitated. When the furnace cover 2 is opened, the first reversing valve 9 reverses to make outside air enter the annular cavity 3 to release pressure for the annular cavity 3, so that the matching surface is decompressed. Because the negative pressure exists in the annular cavity 3, the air pressure of the annular cavity is lower than the air pressure of the outside air and the flue gas in the furnace, if the matching surface at the outer side is leaked, a small amount of air from the outside can be pumped out by the vacuum pump 7 after entering the annular cavity 3; if the matching surface on the inner side is leaked, a small amount of flue gas from the furnace is pumped out by the vacuum pump 7 after entering the annular cavity 3 and then discharged into a dust removal and purification device (not shown in the figure) for purification. Therefore, air can not enter the furnace all the time, and the smelting of the aluminum can not be influenced.
The control unit of the corner cylinder 6 is connected with the corner cylinder 6 and used for controlling the opening and closing of the corner cylinder 6 so as to press the furnace cover 2 tightly. The control unit of the corner cylinder 6 comprises an air pump 10, a second one-way valve 11, an air storage tank 12 and a second reversing valve 13, wherein the air pump 10 and the second one-way valve 11 are used for supplying air to the air storage tank 12, and the second reversing valve 13 is used for reversing. When the furnace lid 2 is closed, the control unit of the angle cylinder 6 causes the angle cylinder 6 to press the furnace lid 2. When the furnace cover 2 is opened, the control unit of the corner cylinder 6 enables the corner cylinder 6 to be separated from pressing the furnace cover 2.
For convenience of program control, the first direction valve 9 and the second direction valve 13 are both electromagnetic direction valves.
The present invention is not described in detail in the prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A sealed furnace cover for an aluminum ingot smelting furnace is characterized in that: the upper end surface of the furnace body is provided with a trapezoidal ring groove, the lower end surface of the furnace cover is provided with a trapezoidal ring platform, after the furnace cover is combined with the furnace body, the inclined surface of the trapezoidal ring groove and the inclined surface of the trapezoidal ring platform form a sealing matching surface, an annular cavity is formed between the bottom surface of the trapezoidal ring groove and the bottom surface of the trapezoidal ring platform, and the annular cavity is connected with an external gas circuit control device through a gas passage; a plurality of corner cylinders are uniformly distributed on the furnace body and are connected with a gas circuit control device; when the furnace cover is closed, the gas circuit control device extracts gas in the annular cavity, so that negative pressure is formed in the annular cavity, and the corner cylinder presses the furnace cover tightly; when the furnace cover is opened, the pressure is released for the annular cavity, and the corner cylinder is separated from pressing the furnace cover.
2. The sealing furnace cover for the aluminum ingot smelting furnace as set forth in claim 1, characterized in that: a sealing ring groove is arranged on the inner side or the outer side of the trapezoidal ring groove, and high-temperature-resistant sealing materials are filled in the sealing ring groove.
3. The sealing furnace cover for the aluminum ingot smelting furnace as set forth in claim 1, characterized in that: the furnace cover is provided with a hanging ring, an observation window and a flue gas outlet, and the air flue is arranged on the furnace body.
4. The sealing furnace cover for the aluminum ingot smelting furnace as set forth in claim 1, characterized in that: the air path control device comprises a negative pressure control unit and a corner cylinder control unit, wherein the negative pressure control unit comprises a vacuum pump and a first reversing valve, and the first reversing valve is arranged between the vacuum pump and an air passage; the corner cylinder control unit comprises an air pump and a second reversing valve, wherein the second reversing valve is arranged between the air pump and the corner cylinder.
5. The sealing furnace cover for the aluminum ingot smelting furnace as set forth in claim 4, wherein: a first one-way valve is arranged between the vacuum pump and the first reversing valve, and a second one-way valve is arranged between the air pump and the second reversing valve.
6. The sealing furnace cover for the aluminum ingot smelting furnace as set forth in claim 4, wherein: the first reversing valve and the second reversing valve are both electromagnetic reversing valves.
7. The sealed furnace cover for the aluminum ingot smelting furnace as set forth in claim 5, wherein: and an air storage tank is arranged between the second one-way valve and the second reversing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110883941.4A CN113532122B (en) | 2021-08-03 | 2021-08-03 | Sealing furnace cover for aluminum ingot smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110883941.4A CN113532122B (en) | 2021-08-03 | 2021-08-03 | Sealing furnace cover for aluminum ingot smelting furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113532122A true CN113532122A (en) | 2021-10-22 |
| CN113532122B CN113532122B (en) | 2023-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110883941.4A Active CN113532122B (en) | 2021-08-03 | 2021-08-03 | Sealing furnace cover for aluminum ingot smelting furnace |
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| Country | Link |
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| CN (1) | CN113532122B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06117772A (en) * | 1992-09-30 | 1994-04-28 | Daido Steel Co Ltd | Furnace lid sealing structure for atmospheric furnace |
| CN203772002U (en) * | 2014-03-29 | 2014-08-13 | 浙江西瑞合金材料有限公司 | Smelting chamber of vacuum smelting system |
| CN107966022A (en) * | 2017-12-21 | 2018-04-27 | 宁夏昇力恒真空设备有限公司 | Flange seal attachment device and ultrahigh vacuum sintering furnace |
| CN207470770U (en) * | 2017-11-17 | 2018-06-08 | 北京富兴凯永兴光电技术有限公司 | A kind of horizontal sealing vacuum drying oven |
| CN207716852U (en) * | 2017-11-17 | 2018-08-10 | 北京富兴凯永兴光电技术有限公司 | A kind of vertical vacuum smelting apparatus |
| CN209263666U (en) * | 2018-12-21 | 2019-08-16 | 北京中孚悦达真空科技有限公司 | A kind of vacuum furnace door automatic clamping device |
| CN110735185A (en) * | 2019-10-30 | 2020-01-31 | 中科钢研节能科技有限公司 | Crystal growth furnace |
| CN213396566U (en) * | 2020-10-28 | 2021-06-08 | 赣州铝业股份有限公司 | Environment-friendly smelting furnace is used in processing of aluminum alloy building templates |
-
2021
- 2021-08-03 CN CN202110883941.4A patent/CN113532122B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06117772A (en) * | 1992-09-30 | 1994-04-28 | Daido Steel Co Ltd | Furnace lid sealing structure for atmospheric furnace |
| CN203772002U (en) * | 2014-03-29 | 2014-08-13 | 浙江西瑞合金材料有限公司 | Smelting chamber of vacuum smelting system |
| CN207470770U (en) * | 2017-11-17 | 2018-06-08 | 北京富兴凯永兴光电技术有限公司 | A kind of horizontal sealing vacuum drying oven |
| CN207716852U (en) * | 2017-11-17 | 2018-08-10 | 北京富兴凯永兴光电技术有限公司 | A kind of vertical vacuum smelting apparatus |
| CN107966022A (en) * | 2017-12-21 | 2018-04-27 | 宁夏昇力恒真空设备有限公司 | Flange seal attachment device and ultrahigh vacuum sintering furnace |
| CN209263666U (en) * | 2018-12-21 | 2019-08-16 | 北京中孚悦达真空科技有限公司 | A kind of vacuum furnace door automatic clamping device |
| CN110735185A (en) * | 2019-10-30 | 2020-01-31 | 中科钢研节能科技有限公司 | Crystal growth furnace |
| CN213396566U (en) * | 2020-10-28 | 2021-06-08 | 赣州铝业股份有限公司 | Environment-friendly smelting furnace is used in processing of aluminum alloy building templates |
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| Publication number | Publication date |
|---|---|
| CN113532122B (en) | 2023-10-20 |
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