CN217814973U - Positive pressure sealing device - Google Patents
Positive pressure sealing device Download PDFInfo
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- CN217814973U CN217814973U CN202221635539.0U CN202221635539U CN217814973U CN 217814973 U CN217814973 U CN 217814973U CN 202221635539 U CN202221635539 U CN 202221635539U CN 217814973 U CN217814973 U CN 217814973U
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- cavity
- sealing strip
- positive pressure
- sealing device
- opening
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model belongs to the technical field of battery production equipment, concretely relates to positive pressure sealing device, including cavity, sealing strip and layering, the one side of cavity is equipped with the opening, the layering is installed on the border of the face that the opening is located, the sealing strip compress tightly in the cavity with between the layering, the sealing strip closed loop sets up, the cross section of sealing strip is omega-shaped, including the portion of aerifing and being located two pressfitting portions of portion both sides of aerifing, the opening of the portion of aerifing is laminated in the wall of cavity, the pressfitting portion compress tightly in the layering with between the cavity; and a gas path is arranged in the wall of the cavity and is communicated with the opening of the pressing part. The utility model discloses well sealing strip accessible gas circuit is aerifyd and is carried out the pressure boost to the flexible volume of increase can reduce because of the gas leakage that the cavity deformation caused in the use, ensures the sealed effect under the malleation condition in the cavity, applicable malleation condition more than 0.5MPa than atmospheric pressure in the cavity.
Description
Technical Field
The utility model belongs to the technical field of battery production facility, particularly, the utility model relates to a malleation sealing device.
Background
In the production process of the lithium ion battery, a positive pressure cavity and a negative pressure cavity are often used for pressure regulating production, so that an ideal working condition environment is created. At present, a special sealing device is not needed for positive pressure sealing of a cavity, and a sealing mode of a negative pressure cavity is mostly used for sealing, namely, a mode that a groove is additionally arranged on a cavity base to be embedded with an O-shaped sealing strip (the O-shaped mode means that the cross section of the sealing strip is circular) is used for sealing. However, the O-shaped sealing strip has small elastic deformation and high requirement on the parallelism between the bottom of the cavity and the cavity. Moreover, the O-shaped sealing strip is easy to fall off, the service life is short, the sealing effect is poor, and the cavity pressure and the sealing effect are in inverse proportion.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a malleation sealing device, its technical scheme as follows:
a positive pressure sealing device comprises a cavity, a sealing strip and a pressing strip, wherein an opening is formed in one surface of the cavity, the pressing strip is installed on the edge of the surface where the opening is located, and the sealing strip is tightly pressed between the cavity and the pressing strip; the sealing strip is arranged in a closed loop mode, the cross section of the sealing strip is in an omega shape and comprises an inflating part and two pressing parts positioned on two sides of the inflating part, the opening of the inflating part is attached to the wall of the cavity, and the pressing parts are tightly pressed between the pressing strip and the cavity; and a gas path is arranged in the wall of the cavity and communicated with the opening of the pressing part for inflating the inflating part.
The positive pressure sealing device as described above, more preferably: along the cross section direction of the sealing strip, the inner contour and the outer contour of the inflating part are U-shaped, and round corners are arranged at the corners.
The positive pressure sealing device as described above, more preferably: the difference in radius between the rounded corners of the outer profile of the inflatable portion and the rounded corners of the inner profile of the inflatable portion is less than the wall thickness of the inflatable portion.
The positive pressure sealing device as described above, more preferably: along the cross section direction of the sealing strip, the width of the interior of the inflating part is smaller than the width of the pressing part.
The positive pressure sealing device as described above, more preferably: the opening of the inflating part is in smooth transition with the pressing parts positioned on the two sides.
The positive pressure sealing device as described above is more preferably: a confluence groove is arranged on the edge of the surface of the cavity where the opening is located, and the confluence groove is arranged in a closed loop; along the extending direction of sealing strip, converge the groove with the opening of aerifing the portion communicates with each other, be used for to aerify the portion equipartition and come from the gas circuit.
The positive pressure sealing device as described above is more preferably: along the cross section direction of sealing strip, the inside width of aerifing the portion is not less than the width of converging the groove.
The positive pressure sealing device as described above, more preferably: the gas path is provided with a plurality of communication ports communicated with the confluence groove; the plurality of communication ports are distributed in the extending direction of the confluence groove.
The positive pressure sealing device as described above, more preferably: the interval between adjacent communication ports accounts for fifteen to one fifth of the total length of the confluence groove.
The positive pressure sealing device as described above is more preferably: the gas path is communicated with the inner cavity of the cavity.
The positive pressure sealing device as described above is more preferably: and the air inlets of the air paths correspond to the communication ports one to one.
The positive pressure sealing device as described above, more preferably: the gas path is communicated with the outside of the cavity.
The positive pressure sealing device as described above, more preferably: the number of the air inlets of the air passages is smaller than that of the communication openings.
The analysis can know, compare with prior art, the utility model discloses an advantage and beneficial effect lie in:
the utility model discloses in, sealing strip accessible gas circuit is aerifyd, and internal pressure is higher than atmospheric pressure. When the cavity internal pressurization, can carry out the pressure boost to the sealing strip in step to the flexible volume of increase sealing strip, the flexible volume of sealing strip can reach 1mm, can reduce because of the gas leakage that the cavity deformation caused in the use, ensures the sealed effect under the malleation condition in the cavity, and the pressure ratio atmospheric pressure is 0.5MPa more than the malleation condition in applicable cavity.
Drawings
Fig. 1 is a schematic structural view of the positive pressure sealing device of the present invention;
fig. 2 is a first cross-sectional view of the positive pressure sealing device of the present invention;
fig. 3 is a partial enlarged view of fig. 2 at a in accordance with the present invention;
fig. 4 is a second cross-sectional view of the positive pressure sealing device of the present invention;
fig. 5 is a partial enlarged view of fig. 4 at B of the present invention;
fig. 6 is the structure diagram of the confluence groove and the communication port of the present invention.
In the figure: 1-a cavity; 2, layering; 3-sealing strips; 4-an air inlet; 5-gas path; 6-a confluence groove; 7-a press fit; 8-an inflation part; 9-communication port.
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.
In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected" and "connected" used in the present invention should be understood broadly, and may be, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
Please refer to fig. 1 to 6, wherein fig. 1 is a schematic structural diagram of a positive pressure sealing device according to the present invention; fig. 2 is a first cross-sectional view of the positive pressure sealing device of the present invention; fig. 3 is a partial enlarged view of fig. 2 at a according to the present invention; fig. 4 is a second cross-sectional view of the positive pressure sealing device of the present invention; fig. 5 is a partial enlarged view of fig. 4 at B of the present invention; fig. 6 is the structure diagram of the confluence groove and the communication port of the present invention.
As shown in fig. 1, 2, 3 and 6, in one embodiment of the present invention, a positive pressure seal is provided. Specifically, the positive pressure sealing device comprises a cavity 1, a sealing strip 3 and a pressing strip 2. One side of cavity 1 is equipped with the opening, and layering 2 is installed on the border of opening place face, and sealing strip 3 compresses tightly between cavity 1 and layering 2. The sealing strip 3 is arranged in a closed loop, is enclosed at the outer side of the opening of the cavity 1 and is in a closed ring shape. The sealing strip 3 has an omega-shaped cross section and comprises an inflation part 8 and two pressing parts 7 positioned at two sides of the inflation part 8. The opening of the inflating part 8 is attached to the wall of the cavity 1, and the pressing part 7 is pressed between the pressing strip 2 and the cavity 1. The air path 5 is arranged in the wall of the cavity 1, the air path 5 is communicated with the opening of the pressing part 7, and the air can be inflated into the inflating part 8.
In this embodiment, the air path 5 on the cavity 1 may be used to inflate the sealing strip 3, so that the pressure inside the sealing strip 3 is higher than the atmospheric pressure and is a positive pressure. During the use, when the pressure boost in cavity 1, can carry out the pressure boost to sealing strip 3 in step to the flexible volume of increase sealing strip 3, the flexible volume of sealing strip 3 can reach 1mm, can reduce because of the gas leakage that cavity 1 deformation caused in the use, ensures the sealed effect under the malleation condition in the cavity 1, applicable in the cavity 1 interior atmospheric pressure than the malleation condition more than 0.5 MPa.
As shown in fig. 4 and 5, in an embodiment of the utility model, the layering 2 passes through the bolt and links to each other with cavity 1 to can realize that sealing strip 3 is connected with dismantling of cavity 1, sealing strip 3 installs firmly, and it is convenient to change.
As shown in fig. 3 and 5, in an embodiment of the present invention, along the cross-sectional direction of the sealing strip 3, the inner contour and the outer contour of the inflating portion 8 are u-shaped, and are all provided with rounded corners at the corners, so as to improve the elasticity and the air tightness of the inflating portion 8 itself, and avoid the deformation and damage of the inflating portion 8 at the corners.
Further, in this embodiment, the radius difference between the fillet of the outer contour of the inflation portion 8 at the corner and the fillet of the inner contour of the inflation portion 8 at the corner is smaller than the wall thickness of the inflation portion 8, so that the wall thickness of the inflation portion 8 at the corner is thicker, the inflation portion has toughness, and the shape of the inflation portion 8 in the natural state can be better maintained, so that the deformation of the sealing strip 3 during inflation is more controllable, and the sealing performance of the sealing strip 3 is further enhanced.
As shown in fig. 2 and fig. 3, in an embodiment of the present invention, along the cross-sectional direction of the sealing strip 3, the width inside the inflation portion 8 is smaller than the width of the pressing portion 7, and the portion (pressing portion 7) of the sealing strip 3 that is compressed is larger in the total width of the sealing strip 3, so as to ensure the sealing effect on the sealing strip 3 and avoid the gas inside the inflation portion 8 from overflowing from the pressing portion 7.
As shown in fig. 4 and 5, in an embodiment of the present invention, the opening of the air-filled part 8 and the pressing parts 7 located at both sides are in smooth transition, which not only can improve the fatigue life of the sealing strip 3, but also can make the sealing strip 3 easier to be demolded during production, thereby reducing the cost.
As shown in fig. 6, in an embodiment of the present invention, a converging groove 6 is provided on an edge of a surface where an opening of the cavity 1 is located, the converging groove 6 is in a closed-loop configuration, and the air charging portion 8 covers the converging groove 6. Along the extending direction of the sealing strip 3, the confluence groove 6 is communicated with the opening of the air inflation part 8, so that air from the air passage 5 can be uniformly distributed to the air inflation part 8, and uniform pressurization in the air inflation part 8 is ensured.
As shown in fig. 3 and fig. 5, in an embodiment of the present invention, along the cross-sectional direction of the sealing strip 3, the width inside the inflation portion 8 is not less than the width of the confluence groove 6, so as to ensure the sealing effect of the pressing portion 7 on the inflation portion 8 and avoid the gas in the inflation portion 8 from overflowing from the pressing portion 7.
As shown in fig. 6, in an embodiment of the present invention, the gas path 5 is provided with a plurality of communication ports 9 communicating with the confluence groove 6. Specifically, a plurality of intercommunication mouths 9 distribute in the extending direction of groove 6 that converges, can be faster fill gas in the length range of groove 6 that converges to groove 6 that converges, be favorable to the atmospheric pressure in the gas filled portion 8 of the whole sealing strip 3 of more rapid equilibrium.
As shown in fig. 6, in an embodiment of the present invention, the interval between adjacent communication ports 9 accounts for fifteen to one fifth of the total length of the bus duct 6. For example, it may be one-fifteenth, one-fourteen, one-thirteen, one-twelfth, one-eleventh, one-tenth, one-ninth, one-eighth, one-seventh, one-sixth, one-fifth. Preferably, the number of the communication ports 9 is ten, and the interval between the adjacent communication ports 9 occupies about one tenth of the total length of the bus duct 6.
As shown in fig. 1, in an embodiment of the utility model, gas circuit 5 communicates with the inner chamber of cavity 1, and when pressure boost in cavity 1, sealing strip 3 is the pressure boost in step, can utilize the malleation in the cavity 1 for aerifing portion 8 pressure boost, and the pressure in the portion 8 of aerifing keeps balanced with the pressure in the cavity 1, and the size is unanimous (sealing strip 3 ignores because of the slight pressure variation that the deformation leads to).
Further, in this embodiment, the air inlets 4 of the air passages 5 correspond to the communication ports 9 one by one, and one air passage 5 corresponds to one air inlet 4 and one communication port 9, so as to facilitate rapid pressurization of the inflation portion 8.
The utility model discloses an in the embodiment, gas circuit 5 communicates with each other with the external world of cavity 1, in this embodiment, can adopt external air source to inflate the portion 8 of aerifing of sealing strip 3, and sealing strip 3 does not use the malleation in the cavity 1 to come the pressure boost, but uses solitary air source to carry out the pressure boost, and the pressure boost effect is controlled more easily, the regulation and control of being convenient for.
Further, in this embodiment, the number of the air inlets 4 of the air path 5 is smaller than the number of the communication ports 9, for example, pressurization can be performed through one air inlet 4, and air pressure is distributed through the plurality of communication ports 9, so that an external air source can inflate the inflation portion 8 conveniently.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (10)
1. The utility model provides a malleation sealing device, includes cavity, sealing strip and layering, the one side of cavity is equipped with the opening, the layering is installed on the border of opening place face, the sealing strip compress tightly in the cavity with between the layering, its characterized in that:
the sealing strip is arranged in a closed loop mode, the cross section of the sealing strip is in an omega shape and comprises an inflating part and two pressing parts positioned on two sides of the inflating part, the opening of the inflating part is attached to the wall of the cavity, and the pressing parts are tightly pressed between the pressing strip and the cavity;
and a gas path is arranged in the wall of the cavity and communicated with the opening of the pressing part for inflating the inflating part.
2. The positive pressure sealing device of claim 1, wherein:
along the cross section direction of the sealing strip, the inner contour and the outer contour of the inflating part are U-shaped, and fillets are arranged at corners;
the difference in radius between the rounded corners of the outer profile of the inflatable portion and the rounded corners of the inner profile of the inflatable portion is less than the wall thickness of the inflatable portion.
3. The positive pressure sealing device of claim 1, wherein:
along the cross section direction of the sealing strip, the width of the interior of the inflating part is smaller than the width of the pressing part.
4. The positive pressure sealing device of claim 1, wherein:
the opening of the inflating part is in smooth transition with the pressing parts positioned on the two sides.
5. The positive pressure sealing device of claim 1, wherein:
a confluence groove is arranged on the edge of the surface of the cavity where the opening is located, and the confluence groove is arranged in a closed loop;
and along the extending direction of the sealing strips, the confluence groove is communicated with the opening of the inflation part and is used for uniformly distributing gas from the gas path to the inflation part.
6. The positive pressure sealing device of claim 5, wherein:
along the cross section direction of sealing strip, the inside width of aerifing the portion is not less than converge the width of groove.
7. The positive pressure sealing device of claim 5, wherein:
the gas path is provided with a plurality of communicating ports communicated with the confluence groove;
the plurality of communication ports are distributed in the extending direction of the confluence groove.
8. The positive pressure sealing device of claim 7, wherein:
the interval between adjacent communication openings accounts for fifteen to one fifth of the total length of the confluence groove.
9. The positive pressure sealing device of claim 7, wherein:
the gas path is communicated with the inner cavity of the cavity;
and the air inlets of the air paths correspond to the communication ports one to one.
10. The positive pressure sealing device of claim 7, wherein:
the gas path is communicated with the outside of the cavity;
the number of the air inlets of the air passages is smaller than that of the communication openings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221635539.0U CN217814973U (en) | 2022-06-27 | 2022-06-27 | Positive pressure sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221635539.0U CN217814973U (en) | 2022-06-27 | 2022-06-27 | Positive pressure sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217814973U true CN217814973U (en) | 2022-11-15 |
Family
ID=83961210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221635539.0U Active CN217814973U (en) | 2022-06-27 | 2022-06-27 | Positive pressure sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217814973U (en) |
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2022
- 2022-06-27 CN CN202221635539.0U patent/CN217814973U/en active Active
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