CN219013344U - Electrode port sealing structure of sintering furnace heat preservation barrel - Google Patents
Electrode port sealing structure of sintering furnace heat preservation barrel Download PDFInfo
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- CN219013344U CN219013344U CN202223294842.1U CN202223294842U CN219013344U CN 219013344 U CN219013344 U CN 219013344U CN 202223294842 U CN202223294842 U CN 202223294842U CN 219013344 U CN219013344 U CN 219013344U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model relates to a sealing structure of an electrode port of a heat-preserving barrel of a sintering furnace, which comprises a heat-preserving barrel, an electrode graphite sleeve, an insulating sleeve, a graphite electrode and a sealing piece. The heat preservation bucket is equipped with the mounting hole that link up the heat preservation bucket, and the mounting hole includes coaxial arrangement's first through-hole and second through-hole, and first through-hole is close to the outside of heat preservation bucket, and the second through-hole is close to the inboard of heat preservation bucket. The electrode graphite sleeve is arranged in the first through hole. The insulating sleeve is arranged in the electrode graphite sleeve and is spaced from the electrode graphite sleeve. The graphite electrode is arranged in the insulating sleeve and the second through hole and is spaced from the insulating sleeve. The sealing element comprises an aerogel layer and a graphite paper layer, the sealing element is arranged in the second through hole and sleeved on the graphite electrode, and the sealing element seals a gap between the graphite electrode and the second through hole, so that the inner side and the outer side of the heat preservation barrel have good sealing performance, the power loss is reduced, and the temperature overtemperature of the inner wall of the furnace body is avoided.
Description
Technical Field
The utility model relates to the technical field of sintering furnaces, in particular to a sealing structure for an electrode port of a heat preservation barrel of a sintering furnace.
Background
The sintering furnace is used for heating and sintering metal, ceramic or refractory metal intermediate compound powder under the condition of high temperature and high pressure to obtain a compact material with certain density and certain mechanical properties.
In the related art, the installation mode of the graphite electrode 4 on the sintering furnace heat-preserving container 1 is shown in figure 1 in the attached drawing, wherein the heat-preserving container 1 is provided with an installation hole, the electrode graphite sleeve 2 is installed in the installation hole, the insulating sleeve 3 is installed in the electrode graphite sleeve 2, and the graphite electrode 4 is installed in the insulating sleeve 3. Because graphite electrode 4, insulating cover 3 and electrode graphite cover 2 need leave the clearance each other and take place the fracture when avoiding high temperature expansion, after gas in heat preservation bucket 1 intensifies and steps up, gas expansion can lead to high temperature gas to spill outside heat preservation bucket 1 from the clearance gap in above-mentioned reservation clearance, and heat preservation bucket 1 electrode mouth department leakproofness is poor, leads to the loss of power and furnace body inner wall temperature overtemperature.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the utility model and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.
Disclosure of Invention
The utility model aims to provide a sealing structure for an electrode port of a heat-preserving barrel of a sintering furnace, so as to improve the sealing performance of the electrode port of the heat-preserving barrel.
In order to solve the technical problems, the utility model adopts the following technical scheme.
The utility model provides a sealing structure of an electrode port of a heat-preserving barrel of a sintering furnace, which comprises the following components: the heat-insulating barrel is provided with a mounting hole penetrating through the heat-insulating barrel, the mounting hole comprises a first through hole and a second through hole which are coaxially arranged, the first through hole is close to the outer side of the heat-insulating barrel, and the second through hole is close to the inner side of the heat-insulating barrel; the electrode graphite sleeve is arranged in the first through hole; the insulating sleeve is arranged in the electrode graphite sleeve and is spaced from the electrode graphite sleeve; the graphite electrode is arranged in the insulating sleeve and the second through hole and is spaced from the insulating sleeve; the sealing piece comprises an aerogel layer and a graphite paper layer, the sealing piece is installed in the second through hole and sleeved on the graphite electrode, and the sealing piece seals a gap between the graphite electrode and the second through hole.
In some embodiments of the present application, the aerogel layer is a gel comprising at least one aerogel spacer; the graphite paper layer comprises at least one graphite paper gasket; at least one of the aerogel washers and at least one of the graphite paper washers overlap to form the seal.
In some embodiments of the present application, one graphite paper gasket is sandwiched between every two adjacent aerogel gaskets.
In some embodiments of the present application, the aerogel gasket is provided with four; the graphite paper gaskets are three.
In some embodiments of the present application, the sealing structure further comprises a compression nut; the compression nut is in threaded connection with the graphite electrode, and clamps and fixes the sealing piece in the second through hole.
In some embodiments of the present application, the first through hole comprises an outer through hole and an inner through hole coaxially arranged; the outer through hole is close to the outer side of the heat insulation barrel; the inner through hole is positioned between the outer through hole and the second through hole; the electrode graphite sleeve comprises a first sleeve part and a second sleeve part which are coaxially arranged; the first sleeve part is arranged in the outer through hole; the second sleeve part is arranged in the second through hole; the sealing structure also comprises a graphite sleeve nut; the graphite sleeve nut is in threaded connection with the first sleeve part and is clamped and fixed on the heat insulation barrel together with the second sleeve part.
In some embodiments of the present application, the seal clamps the second sleeve portion within the inner through bore.
In some embodiments of the present application, the insulating sleeve is a boron nitride insulating sleeve.
As can be seen from the technical scheme, the embodiment of the utility model has at least the following advantages and positive effects:
in the electrode port sealing structure of the sintering furnace heat preservation barrel, the gaps reserved among the graphite electrode, the insulating sleeve and the electrode graphite sleeve can be used for compensating the volume change during high-temperature expansion, and breakage during high-temperature expansion is avoided. And then the sealing element is used for sealing the gap between the electrode and the second through hole, so that the inner side and the outer side of the heat insulation barrel have good sealing property, the power loss is reduced, and the temperature overtemperature of the inner wall of the furnace body is avoided. The sealing member includes aerogel layer and graphite paper layer, and the aerogel layer has insulating thermal-insulated effect, and graphite paper layer has good leakproofness to when graphite paper layer is heated expansion and takes place the sclerosis under high temperature, the aerogel layer can compensate the volume change of graphite paper layer, avoids expanding graphite electrode and breaks, makes seal structure have stability and leakproofness strong.
Drawings
Fig. 1 is a schematic view of a mounting structure of a graphite electrode on a heat-insulating barrel of a sintering furnace in the related art.
FIG. 2 is a schematic diagram of an electrode port sealing structure of a heat-insulating barrel of a sintering furnace according to an embodiment of the utility model.
Fig. 3 is a schematic structural view of the heat insulation tub in fig. 2.
Fig. 4 is a schematic view of the structure of fig. 2 with the insulating bucket removed.
The reference numerals are explained as follows: 1. a heat-preserving barrel; 11. a first through hole; 111. an outer through hole; 112. an inner through hole; 12. a second through hole; 2. an electrode graphite sleeve; 21. a first sleeve portion; 22. a second sleeve portion; 3. an insulating sleeve; 4. a graphite electrode; 5. a seal; 51. an aerogel gasket; 52. a graphite paper gasket; 6. a compression nut; 7. a graphite sleeve nut.
Detailed Description
While this utility model is susceptible of embodiment in different forms, there is shown in the drawings and will herein be described in detail, specific embodiments thereof with the understanding that the present disclosure is to be considered as an exemplification of the principles of the utility model and is not intended to limit the utility model to that as illustrated.
Thus, rather than implying that each embodiment of the present utility model must have the characteristics described, one of the characteristics indicated in this specification will be used to describe one embodiment of the present utility model. Furthermore, it should be noted that the present specification describes a number of features. Although certain features may be combined together to illustrate a possible system design, such features may be used in other combinations not explicitly described. Thus, unless otherwise indicated, the illustrated combinations are not intended to be limiting.
In the embodiments shown in the drawings, indications of orientation (such as up, down, left, right, front and rear) are used to explain the structure and movement of the various elements of the utility model are not absolute but relative. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the position of these elements changes, the indication of these directions changes accordingly.
Preferred embodiments of the present utility model will be further elaborated below in conjunction with the drawings of the present specification.
FIG. 2 is a schematic diagram of an electrode port sealing structure of a heat-insulating barrel of a sintering furnace according to an embodiment of the utility model. Fig. 3 is a schematic structural view of the heat insulation tub in fig. 2. Fig. 4 is a schematic view of the structure of fig. 2 with the insulating bucket removed.
Referring to fig. 2 and 4, the sealing structure for the electrode 4 port of the insulating barrel 1 of the sintering furnace according to an embodiment of the present utility model includes an insulating barrel 1, an electrode graphite sleeve 2, an insulating sleeve 3, a graphite electrode 4 and a sealing member 5.
The heat preservation barrel 1 is provided with a mounting hole penetrating through the heat preservation barrel 1, the mounting hole comprises a first through hole 11 and a second through hole 12 which are coaxially arranged, the first through hole 11 is close to the outer side of the heat preservation barrel 1, and the second through hole 12 is close to the inner side of the heat preservation barrel 1. The electrode graphite sheath 2 is mounted in the first through hole 11. The insulating sleeve 3 is arranged in the electrode graphite sleeve 2 and is spaced from the electrode graphite sleeve 2. The graphite electrode 4 is installed in the insulating sleeve 3 and the second through hole 12 with a space from the insulating sleeve 3. The sealing element 5 comprises an aerogel layer and a graphite paper layer, the sealing element 5 is arranged in the second through hole 12 and sleeved on the electrode 4, and the sealing element 5 seals a gap between the electrode 4 and the second through hole 12.
The gaps reserved among the graphite electrode 4, the insulating sleeve 3 and the electrode graphite sleeve 2 can be used for compensating the volume change during high-temperature expansion, so that the breakage during high-temperature expansion is avoided. And then the gap between the electrode 4 and the second through hole 12 is sealed by the sealing piece 5, so that the inner side and the outer side of the heat preservation barrel 1 have good sealing property, the power loss is reduced, and the temperature overtemperature of the inner wall of the furnace body is avoided. The sealing member 5 includes aerogel layer and graphite paper layer, and the aerogel layer has insulating thermal-insulated effect, and graphite paper layer has good leakproofness to when graphite paper layer is heated expansion and takes place the sclerosis under high temperature, the aerogel layer can compensate the volume change of graphite paper layer, avoids expanding graphite electrode 4 to fall, makes seal structure have stability and leakproofness strong.
In some embodiments, the aerogel layer is comprised of at least one aerogel spacer 51, and the graphite paper layer is comprised of at least one graphite paper spacer 52. At least one aerogel washer 51 and at least one graphite paper washer 52 are stacked to form a sealing piece 5, the aerogel washer 51 and the graphite paper washer 52 are coaxially arranged, and when the sealing piece 5 is sleeved on the graphite electrode 4, the graphite electrode 4 is arranged in the aerogel washer 51 and the graphite paper washer 52 in a penetrating manner, and the extending directions of the aerogel washer 51 and the graphite paper washer 52 are perpendicular to the axial direction of the graphite electrode 4.
The term "at least one" is understood to mean one, two, three or more, i.e., the number of aerogel washers 51 can be one, two, three or more, and the number of graphite paper washers 52 can be one, two, three or more.
In other embodiments, the sealing member 5 may be formed by pressing aerogel and graphite paper, and then the sealing member 5 is perforated, so that the sealing member 5 is sleeved on the graphite electrode 4. At this time, the extending direction of the aerogel and the graphite paper can form any included angle with the axial direction of the graphite electrode 4.
In some embodiments, a graphite paper gasket 52 is sandwiched between every two adjacent aerogel gaskets 51, the aerogel gaskets 51 can better compensate the volume change of the graphite paper gasket 52, and the graphite paper gasket 52 can seal the gap between the aerogel gaskets 51, so that the insulation and heat insulation effects and the tightness of the sealing element 5 are ensured, and the stability and the tightness of the sealing structure are further improved.
As an example, there are four aerogel washers 51, three graphite paper washers 52, and two by two, respectively sandwiched between the four aerogel washers 51.
In some embodiments, the sealing structure further comprises a compression nut 6. The compression nut 6 is positioned on the inner side of the heat preservation barrel 1 and is in threaded connection with the electrode 4, and the compression nut 6 clamps and fixes the sealing element 5 in the second through hole 12 so as to prevent the sealing element 5 from falling off. In other embodiments, the seal 5 may also be installed in the second through hole 12 using an interference fit.
In some embodiments, the first through hole 11 includes an outer through hole 111 and an inner through hole 112 coaxially arranged, the outer through hole 111 being close to the outside of the heat insulating tub 1, the inner through hole 112 being located between the outer through hole 111 and the second through hole 12. The electrode graphite sheath 2 includes a first sheath portion 21 and a second sheath portion 22 coaxially arranged, the first sheath portion 21 being fitted in the outer through hole 111, and the second sheath portion 22 being fitted in the second through hole 12. The sealing structure further comprises a graphite sleeve nut 7, wherein the graphite sleeve nut 7 is in threaded connection with the first sleeve part 21 and is clamped and fixed on the heat insulation barrel 1 together with the second sleeve part 22, so that the electrode graphite sleeve 2 is installed on the heat insulation barrel 1. In other embodiments, the electrode graphite sheath 2 may also be mounted in the mounting hole with an interference fit.
In some embodiments, the seal 5 clamps the second sleeve portion 22 in the inner through bore 112, the seal 5 not having a space from the second sleeve portion 22. In other embodiments, the seal 5 may also be spaced from the second sleeve portion 22. The second sleeve part 22 is pressed and fixed on the bottom surface of the inner through hole 112, and the sealing element 5 is pressed and fixed on the bottom surface of the second through hole 12.
In some embodiments, the insulating sleeve 3 is a boron nitride insulating sleeve 3. The boron nitride insulating sleeve 3 ensures that the graphite electrode 4 is not shorted. And the boron nitride has the characteristics of high temperature resistance, good insulativity, good thermal shock resistance, good arc resistance, long service life and the like, and is not easy to deform and crack.
While the utility model has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present utility model may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (8)
1. The utility model provides a sintering furnace heat preservation bucket electrode mouth seal structure which characterized in that includes:
the heat-insulating barrel is provided with a mounting hole penetrating through the heat-insulating barrel, the mounting hole comprises a first through hole and a second through hole which are coaxially arranged, the first through hole is close to the outer side of the heat-insulating barrel, and the second through hole is close to the inner side of the heat-insulating barrel;
the electrode graphite sleeve is arranged in the first through hole;
the insulating sleeve is arranged in the electrode graphite sleeve and is spaced from the electrode graphite sleeve;
the graphite electrode is arranged in the insulating sleeve and the second through hole and is spaced from the insulating sleeve;
the sealing piece comprises an aerogel layer and a graphite paper layer, the sealing piece is installed in the second through hole and sleeved on the graphite electrode, and the sealing piece seals a gap between the graphite electrode and the second through hole.
2. The fritting furnace insulating bucket electrode port seal structure of claim 1 wherein the aerogel layer is comprised of at least one aerogel gasket;
the graphite paper layer comprises at least one graphite paper gasket;
at least one of the aerogel washers and at least one of the graphite paper washers overlap to form the seal.
3. The sealing structure of the electrode port of the heat-insulating barrel of the sintering furnace according to claim 2, wherein one graphite paper gasket is arranged between every two adjacent aerogel gaskets.
4. A fritting furnace insulating bucket electrode port seal structure as defined in claim 3 wherein said aerogel gasket is provided with four; the graphite paper gaskets are three.
5. The sealing structure of the electrode port of the heat-preserving barrel of the sintering furnace as claimed in claim 1, wherein the sealing structure further comprises a compression nut;
the compression nut is in threaded connection with the graphite electrode, and clamps and fixes the sealing piece in the second through hole.
6. The sealing structure of the electrode port of the heat insulation barrel of the sintering furnace according to claim 1, wherein the first through hole comprises an outer through hole and an inner through hole which are coaxially arranged;
the outer through hole is close to the outer side of the heat insulation barrel;
the inner through hole is positioned between the outer through hole and the second through hole;
the electrode graphite sleeve comprises a first sleeve part and a second sleeve part which are coaxially arranged;
the first sleeve part is arranged in the outer through hole;
the second sleeve part is arranged in the second through hole;
the sealing structure also comprises a graphite sleeve nut;
the graphite sleeve nut is in threaded connection with the first sleeve part and is clamped and fixed on the heat insulation barrel together with the second sleeve part.
7. The sealing structure for the electrode port of the heat insulation barrel of the sintering furnace according to claim 6, wherein the sealing member clamps and fixes the second sleeve part in the inner through hole.
8. The sealing structure of the electrode port of the heat-insulating barrel of the sintering furnace according to claim 1, wherein the insulating sleeve is a boron nitride insulating sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223294842.1U CN219013344U (en) | 2022-12-08 | 2022-12-08 | Electrode port sealing structure of sintering furnace heat preservation barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223294842.1U CN219013344U (en) | 2022-12-08 | 2022-12-08 | Electrode port sealing structure of sintering furnace heat preservation barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219013344U true CN219013344U (en) | 2023-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223294842.1U Active CN219013344U (en) | 2022-12-08 | 2022-12-08 | Electrode port sealing structure of sintering furnace heat preservation barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219013344U (en) |
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2022
- 2022-12-08 CN CN202223294842.1U patent/CN219013344U/en active Active
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