CN209856370U - Sealing structure - Google Patents
Sealing structure Download PDFInfo
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- CN209856370U CN209856370U CN201920719935.3U CN201920719935U CN209856370U CN 209856370 U CN209856370 U CN 209856370U CN 201920719935 U CN201920719935 U CN 201920719935U CN 209856370 U CN209856370 U CN 209856370U
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- sealing
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- sealing surface
- sealing ring
- ring
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Abstract
The utility model discloses a sealing structure, which comprises a first sealing block, a second sealing block, a first sealing ring and a second sealing ring, wherein the first sealing block is provided with a first sealing surface, and the second sealing block is provided with a second sealing surface; a first groove used for accommodating the first sealing ring is formed in the first sealing surface and/or the second sealing surface, and a second groove used for accommodating the second sealing ring is formed in the first sealing surface and/or the second sealing surface; the first sealing block is provided with a first through hole, the first end of the first through hole is positioned on the first sealing surface and is positioned between the first sealing ring and the second sealing ring, the second end of the first through hole is positioned on other surfaces, and/or the second sealing block is provided with a second through hole, the first end of the second through hole is positioned on the second sealing surface and is positioned between the first sealing ring and the second sealing ring, and the second end of the second through hole is positioned on other surfaces. By filling inert gas or vacuumizing, oxygen is prevented from entering the furnace as much as possible, thereby improving the quality of sintered products.
Description
Technical Field
The utility model relates to a sealed technical field especially relates to a seal structure.
Background
During the use process of the dewaxing sintering furnace, the good sealing performance can improve the quality of sintered products. If the sealing surface leaks during sintering, oxygen enters the furnace, the surface of a sintered product becomes black and blue, and the mechanical property and the size of the product are seriously influenced. Moreover, the oxygen reacts with graphite parts in the furnace at high temperature, so that the graphite parts are lost, and the service life of sintering equipment is shortened. In addition, the internal pressure requirement of the dewaxing sintering furnace is 10 aiming at the products of general materials-1Pa below, but for special products such as titanium and titanium alloy, the vacuum degree of the dewaxing sintering furnace is required to be higher, and needs to be 10-3Pa or less.
As shown in fig. 1-2, the existing dewaxing sintering furnaces are all sealed by using a single sealing ring, and the structure has the following problems: once the sealing ring is damaged, problems can occur in sintering, and the product is scrapped; and the sealing ring is made of rubber, and the rubber has certain gas permeability, so that the ultimate vacuum in the furnace is not good.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a sealing structure to prevent oxygen from entering the furnace as much as possible, thereby improving the quality of the sintered product.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a seal structure fills the mode into inert gas or evacuation through the space region between first sealing washer and the second sealing washer, avoids oxygen to get into in the stove as far as possible to improve the quality of sintered product.
In order to achieve the above object, the utility model provides a following scheme:
the utility model discloses a sealing structure, which comprises a first sealing block, a second sealing block, a first sealing ring and a second sealing ring, wherein the first sealing block is provided with a first sealing surface, and the second sealing block is provided with a second sealing surface;
the first sealing ring is clamped between the first sealing surface and the second sealing surface, a first groove used for accommodating the first sealing ring is formed in the first sealing surface and/or the second sealing surface, the second sealing ring is clamped between the first sealing surface and the second sealing surface, and a second groove used for accommodating the second sealing ring is formed in the first sealing surface and/or the second sealing surface;
the first sealing block is provided with a first through hole, the first end of the first through hole is positioned on the first sealing surface and is positioned between the first sealing ring and the second sealing ring, the second end of the first through hole is positioned on other surfaces and is used for being connected with vacuumizing equipment or inert gas filling equipment, and/or the second sealing block is provided with a second through hole, the first end of the second through hole is positioned on the second sealing surface and is positioned between the first sealing ring and the second sealing ring, the second end of the second through hole is positioned on other surfaces and is used for being connected with the vacuumizing equipment or the inert gas filling equipment.
Preferably, the first end of the first through hole is an annular groove structure, the outer edge of the annular groove structure is located on the inner side of the first groove, and the inner edge of the annular groove structure is located on the outer side of the second groove.
Preferably, the first end of the second through hole is an annular groove structure, the outer edge of the annular groove structure is located on the inner side of the first groove, and the inner edge of the annular groove structure is located on the outer side of the second groove.
The utility model discloses for prior art gain following technological effect:
when the sealing structure of the utility model is used, when one sealing ring is invalid, the other sealing ring can also play a sealing effect; the gap between the two sealing rings is vacuumized, so that the gas quantity passing through the sealing rings on the inner side can be reduced, and the ultimate vacuum of the furnace body is improved; the inert gas is filled into the gap between the two sealing rings, so that the gas penetrating through the sealing rings on the inner sides is still the inert gas, and the penetrating gas does not influence the sintering of the product.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a sealing structure of a prior art dewaxing sintering furnace;
FIG. 2 is an enlarged view of a portion of FIG. 1;
fig. 3 is a schematic view of the sealing structure of the present embodiment;
FIG. 4 is an enlarged view of a portion of FIG. 3 in a vacuum state;
FIG. 5 is an enlarged view of a portion of FIG. 3 in an inert gas filled state;
description of reference numerals: 1 a first sealing block; 2 a second sealing block; 3 a first seal ring; 4 a second seal ring; 5 a first groove; 6 a second groove; 7 second through holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a seal structure fills the mode into inert gas or evacuation through the space region between first sealing washer and the second sealing washer, avoids oxygen to get into in the stove as far as possible to improve the quality of sintered product.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 3 to 5, the present embodiment provides a sealing structure, which includes a first sealing block 1, a second sealing block 2, a first sealing ring 3, and a second sealing ring 4, where the first sealing block 1 has a first sealing surface, the second sealing block 2 has a second sealing surface, and both the first sealing surface and the second sealing surface are flat surfaces.
Be equipped with first recess 5 and second recess 6 on the first sealing surface, first sealing washer 3 is embedded in first recess 5, and second sealing washer 4 is embedded in second recess 6, and first sealing washer 3 and second sealing washer 4 are all pressed from both sides tightly by first sealed piece 1 and second sealed piece 2.
The second sealing block 2 is provided with a second through hole 7, the first end of the second through hole 7 is positioned on the second sealing surface and is positioned between the first sealing ring 3 and the second sealing ring 4, the second end of the second through hole 7 is positioned on other surfaces, and the second end of the second through hole 7 is used for connecting with vacuum-pumping equipment or inert gas filling equipment.
The first end of the second through hole 7 is preferably in a ring-shaped groove structure, the outer edge of the ring-shaped groove structure is arranged on the inner side of the first groove 5, and the inner edge of the ring-shaped groove structure is arranged on the outer side of the second groove 6, so that the flow area is increased, and the efficiency of exhausting or filling inert gas is improved.
When the sealing structure of the embodiment is used, after one sealing ring fails, the other sealing ring can also play a role in sealing; the gap between the two sealing rings is vacuumized, so that the gas quantity passing through the sealing rings on the inner side can be reduced, and the ultimate vacuum of the furnace body is improved; the inert gas is filled into the gap between the two sealing rings, so that the gas penetrating through the sealing rings on the inner sides is still the inert gas, and the penetrating gas does not influence the sintering of the product.
The term gap as used herein does not mean that the first and second sealing surfaces do not abut, and indeed, even if the first and second sealing surfaces abut, the microscopically uneven structure of the surfaces may still provide clearance for airflow therethrough.
In the present embodiment, the first sealing surface and the second sealing surface are planar, but those skilled in the art may also use a non-planar structure as long as the gap between the first sealing ring 3 and the second sealing ring 4 can be evacuated or filled with inert gas.
In order to prevent the first sealing ring 3 and the second sealing ring 4 from moving, the present embodiment limits the first sealing ring 3 and the second sealing ring 4 by providing a groove, and further limits the first groove 5 and the second groove 6 to be located on the first sealing surface. The person skilled in the art may also position both the first recess 5 and the second recess 6 on the second sealing surface; it is also possible to have one groove on the first sealing surface and the other groove on the second sealing surface; or the first sealing surface and the second sealing surface are both provided with a first groove 5; or the first sealing surface and the second sealing surface are both provided with the second groove 6, so long as the limitation of the first sealing ring 3 and the second sealing ring 4 can be realized.
In order to realize vacuum pumping or inert gas filling of the gap between the two seal rings, in this embodiment, a single-side air pumping or gas filling mode is adopted, the second seal block 2 is provided with a second through hole 7, a first end of the second through hole 7 is located on the second seal surface and is located between the first seal ring 3 and the second seal ring 4, and a second end of the second through hole 7 is located on the other surface. A person skilled in the art can also pump air or inflate air from one side of the first sealing block 1, that is, a first through hole is formed in the first sealing block 1, a first end of the first through hole is located on the first sealing surface and located between the first sealing ring 3 and the second sealing ring 4, a second end of the first through hole is located on the other surface, and a second end of the first through hole is used for connecting with a vacuum pumping device or an inert gas charging device; the skilled person can also simultaneously evacuate or simultaneously fill inert gas through the first and second through holes 7 on both sides, and the specific arrangement can be selected according to actual needs.
In this embodiment, the second through hole 7 is used for exhausting or filling the inert gas, and therefore the annular groove structure is formed at the first end of the second through hole 7, when the first through hole is used for exhausting or filling the inert gas, or the first through hole and the second through hole 7 are used for exhausting or filling the inert gas, a person skilled in the art can also form the annular groove structure at the first end of the first through hole, the outer edge of the annular groove structure is located on the inner side of the first groove 5, and the inner edge of the annular groove structure is located on the outer side of the second groove 6.
The application environment of the sealing structure is not limited to the dewaxing sintering furnace, and may be other environments requiring sealing.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (3)
1. A seal structure comprising a first seal block, a second seal block, a first seal ring and a second seal ring, the first seal block having a first seal face and the second seal block having a second seal face;
the first sealing ring is clamped between the first sealing surface and the second sealing surface, a first groove used for accommodating the first sealing ring is formed in the first sealing surface and/or the second sealing surface, the second sealing ring is clamped between the first sealing surface and the second sealing surface, and a second groove used for accommodating the second sealing ring is formed in the first sealing surface and/or the second sealing surface;
the first sealing block is provided with a first through hole, the first end of the first through hole is positioned on the first sealing surface and is positioned between the first sealing ring and the second sealing ring, the second end of the first through hole is positioned on other surfaces and is used for being connected with vacuumizing equipment or inert gas filling equipment, and/or the second sealing block is provided with a second through hole, the first end of the second through hole is positioned on the second sealing surface and is positioned between the first sealing ring and the second sealing ring, the second end of the second through hole is positioned on other surfaces and is used for being connected with the vacuumizing equipment or the inert gas filling equipment.
2. The sealing structure of claim 1, wherein the first end of the first through hole is an annular groove structure, an outer edge of the annular groove structure being inside the first groove, and an inner edge of the annular groove structure being outside the second groove.
3. The sealing structure of claim 1, wherein the first end of the second through hole is an annular groove structure, an outer edge of the annular groove structure being inside the first groove, and an inner edge of the annular groove structure being outside the second groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920719935.3U CN209856370U (en) | 2019-05-20 | 2019-05-20 | Sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920719935.3U CN209856370U (en) | 2019-05-20 | 2019-05-20 | Sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209856370U true CN209856370U (en) | 2019-12-27 |
Family
ID=68941363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920719935.3U Active CN209856370U (en) | 2019-05-20 | 2019-05-20 | Sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209856370U (en) |
-
2019
- 2019-05-20 CN CN201920719935.3U patent/CN209856370U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 365, Xinxing 1st Road, Cixi hi tech Industrial Development Zone, Ningbo City, Zhejiang Province, 315300 Patentee after: Ningbo Hengpu Vacuum Technology Co.,Ltd. Address before: 315300 no.488-560, North Youth Palace Road, Gutang street, Cixi City, Ningbo City, Zhejiang Province Patentee before: NINGBO HIPER VACUUM TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 365, Xinxing 1st Road, Cixi hi tech Industrial Development Zone, Ningbo City, Zhejiang Province, 315300 Patentee after: Ningbo Hengpu Technology Co.,Ltd. Address before: No. 365, Xinxing 1st Road, Cixi hi tech Industrial Development Zone, Ningbo City, Zhejiang Province, 315300 Patentee before: Ningbo Hengpu Vacuum Technology Co.,Ltd. |