CN212055825U - J-shaped sealing ring and quick opening structure using same - Google Patents
J-shaped sealing ring and quick opening structure using same Download PDFInfo
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- CN212055825U CN212055825U CN202020265346.5U CN202020265346U CN212055825U CN 212055825 U CN212055825 U CN 212055825U CN 202020265346 U CN202020265346 U CN 202020265346U CN 212055825 U CN212055825 U CN 212055825U
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- foot
- flat cover
- horizontal plane
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- 238000007789 sealing Methods 0.000 title claims abstract description 207
- 238000009434 installation Methods 0.000 claims description 22
- 229920000459 Nitrile rubber Polymers 0.000 claims description 7
- 229920001973 fluoroelastomer Polymers 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 abstract description 11
- 239000005060 rubber Substances 0.000 abstract description 11
- 238000001125 extrusion Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010070 extrusion (rubber) Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of the pressure vessel blind plate is sealed, especially, relate to a J-shaped sealing washer and use quick-open structure of this J-shaped sealing washer, arbitrary cross section of J-shaped sealing washer includes: the mounting part, the sealing part and the outer warping foot; the mounting part is matched with a sealing groove formed at the bottom of the flat cover and used for mounting and fixing the J-shaped sealing ring; the sealing part is matched with a sealing structure at the bottom of the flat cover; the outward warped foot is in interference fit with an inner hole of the hubbed flange and used for providing radial initial sealing force. The J-shaped sealing ring provided by the embodiment of the utility model can provide enough initial sealing force by arranging the mounting part; the length and the tortuosity of the sealing surface can be increased by arranging the sealing part, and the sealing property is improved; the radial initial sealing force can be provided by the provision of the upturned foot. The stress state of the sealing ring can be improved, the local extrusion and tearing of rubber are prevented, the service life of the sealing ring is prolonged, and sealing failure is prevented.
Description
Technical Field
The utility model belongs to the technical field of the pressure vessel blind plate is sealed, especially, relate to a J-shaped sealing washer and use quick-open structure of this J-shaped sealing washer.
Background
The lock ring type quick-opening blind plate is mainly applied to the end part of pressure vessel equipment or a pipeline, realizes the quick opening and closing of a sealed pressure-bearing structure through the design of a quick-opening mechanism, and is widely applied to the industrial fields of petroleum and natural gas, chemical industry, aerospace, electric power energy and the like. Compared with a common bolt flange structure, the quick-opening blind plate can open and close the door cover more quickly, and is suitable for industrial application occasions where the door cover needs to be frequently disassembled and assembled.
The quick-opening blind plate needs to use a sealing ring, and a common rubber ring with a lip-shaped (C-shaped) section requires a small gap for contacting a sealing surface, so that the adjustment space is limited when the door cover bearing quick-opening locking ring is assembled and disassembled, and the locking ring is difficult to assemble and disassemble due to the conditions of rubber extrusion, blockage of a lip-shaped cavity by impurities and the like; although the saddle-shaped section sealing ring has axial floatability to enable the locking ring to be assembled and disassembled easily, the extrusion state of the sealing ring is not favorable for disassembling the locking ring and has potential rubber tearing and sealing failure risks if the extrusion gap of the rubber ring is larger and cannot be effectively controlled.
It can be seen that the existing quick-opening blind plate sealing ring mainly comprises a C-shaped sealing ring, a saddle-shaped sealing ring and the like, the sealing rings are applied to products, the overall use condition is good, but the phenomena of serious local rubber extrusion and tearing can still occur due to the manufacturing process, the use condition and the like of a small amount of products, the service life of the sealing ring is shortened, and meanwhile, the potential sealing failure risk is avoided.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a J shape sealing washer aims at solving current quick open blind plate sealing washer and mainly has C shape sealing washer, saddle-shaped sealing washer etc. and these sealing washers have all realized the product and have used, and the general condition of use is good, but a small amount of products still can appear local rubber because of reasons such as manufacturing process and in service behavior and extrude seriously and tear the phenomenon, have reduced the life of sealing washer, and the danger of latent sealed inefficacy needs to carry out the problem of improving simultaneously.
The embodiment of the utility model provides a realize like this, a J-shaped sealing washer, arbitrary cross section of J-shaped sealing washer includes: the mounting part, the sealing part and the outer warping foot;
the mounting part is matched with a sealing groove formed at the bottom of the flat cover and used for mounting and fixing the J-shaped sealing ring;
the sealing part is matched with a sealing structure at the bottom of the flat cover;
the outward warped foot is in interference fit with an inner hole of the hubbed flange and used for providing radial initial sealing force.
Preferably, the installation department with seal groove interference fit, the installation department is quadrangle structure.
Preferably, the seal comprises a horizontal plane and a non-horizontal plane;
the horizontal plane is connected with the sealing side of the outward warped foot;
the non-horizontal surface is one side surface of the mounting part.
Preferably, the angle between the horizontal plane and the non-horizontal plane is greater than or equal to 90 °.
Preferably, the bottom of the outward tilting foot comprises an arc line segment and an inward chamfer.
Preferably, the J-shaped sealing ring is embedded with a spring skeleton.
Preferably, the J-shaped sealing ring is made of fluororubber or nitrile rubber.
Preferably, the diameter of the raised foot portion is less than the maximum diameter of the J-ring.
Another object of the embodiment of the present invention is to provide a J-shaped sealing ring, any cross section of the J-shaped sealing ring includes: the mounting part, the sealing part and the outer warping foot;
the installation part is in interference fit with a sealing groove formed in the bottom of the flat cover and used for installing and fixing the J-shaped sealing ring, and the installation part is of a quadrilateral structure;
the sealing part is matched with a sealing structure at the bottom of the flat cover, and comprises a horizontal plane and a non-horizontal plane; the horizontal plane is connected with the sealing side of the outward warped foot; the non-horizontal plane is one side surface of the mounting part, and an included angle between the horizontal plane and the non-horizontal plane is larger than or equal to 90 degrees;
the outer warped foot is in interference fit with an inner hole of the high-neck flange and used for providing radial initial sealing force, and the bottom of the outer warped foot comprises an arc line section and an inward chamfer;
the J-shaped sealing ring is made of fluororubber or nitrile rubber.
Another object of the embodiment of the present invention is to provide a quick-open structure, the quick-open structure includes:
a J-ring seal as described in any one of the embodiments above;
the bottom of the flat cover is provided with a sealing groove matched with the mounting part of the J-shaped sealing ring, the J-shaped sealing ring is fixedly arranged at the bottom of the flat cover through a retaining ring, and the flat cover is also provided with a sealing structure matched with the sealing part;
the flat cover and the high-neck flange are detachably mounted through a lock ring, and the outer warping foot of the J-shaped sealing ring is in interference fit with the inner hole of the high-neck flange in a closed state of the flat cover.
The J-shaped sealing ring provided by the embodiment of the utility model can provide enough initial sealing force no matter the flat cover is initially installed or not inclined by arranging the installation part, thereby preventing initial leakage; the length and the tortuosity of a sealing surface can be increased by arranging the sealing part matched with the sealing structure on the flat cover, so that the sealing performance of the sealing ring is improved; radial initial sealing force can be provided by arranging the outward warping foot, the use of the inward warping foot in the conventional sealing ring is reduced, and the material utilization rate is improved. The stress state of the sealing ring can be improved, the local extrusion and tearing of rubber are prevented, the service life of the sealing ring is prolonged, and sealing failure is prevented.
Drawings
Fig. 1 is a usage state diagram of a J-shaped sealing ring according to an embodiment of the present invention;
fig. 2 is a partially enlarged view of a usage state of a J-shaped seal ring according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a J-shaped seal ring according to an embodiment of the present invention.
In the drawings: 1. a J-shaped seal ring; 11. an installation part; 12. a sealing part; 13. tilting feet outwards; 14. a spring cage; 2. flattening the cover; 3. a neck flange; 4. a retainer ring; 5. and a locking ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description is provided for the specific embodiments of the present invention.
As shown in fig. 1-3, for the structure diagram of the J-shaped sealing ring 1 provided by the embodiment of the present invention, any cross section of the J-shaped sealing ring 1 includes: a mounting portion 11, a sealing portion 12 and an outward warping leg 13;
the mounting part 11 is matched with a sealing groove formed at the bottom of the flat cover 2 and used for mounting and fixing the J-shaped sealing ring 1;
the sealing part 12 is matched with a sealing structure at the bottom of the flat cover 2;
the raised feet 13 are in interference fit with the inner bore of the hubbed flange 3 for providing a radial initial sealing force.
In the embodiment of the present invention, the sealing ring is generally of an annular structure, and the cross section refers to a section obtained by cutting the annular structure through an arbitrary plane of the axis of the annular structure. It should be understood that the ring-shaped structure is only a conventional shape of the sealing ring, and the present invention is only illustrated by such a conventional shape, and does not limit the J-shaped sealing ring 1 to be necessarily a ring-shaped or a circular ring-shaped structure.
In the embodiment of the present invention, it should be understood that the installation portion 11, the sealing portion 12 and the outward tilting leg 13 are different portions on the cross section of the J-shaped sealing ring, and the three are connected into a whole to form the cross section of the J-shaped sealing ring.
The embodiment of the utility model provides a seal groove cooperation of seting up on installation department 11 and the flat lid 2, it is fixed through the installation with realizing J shape sealing washer in 11 embedding seal grooves of installation department. In the utility model, the sealing groove arranged on the flat cover 2 is mainly used for installing the J-shaped sealing ring 1, and the sealing groove is only named and does not represent the function of the groove as sealing; of course, the matching surface between the J-shaped sealing ring and the sealing groove has certain sealing function.
In the embodiment of the present invention, preferably, the diameter of the portion of the outward tilted leg 13 is smaller than the maximum diameter of the J-shaped sealing ring 1. With reference to fig. 3, the arrangement is such that the J-ring 1 can be conveniently installed without the outward turned legs 13 being turned outwards when the hubbed flange 3 is installed.
In the embodiment of the present invention, the sealing portion 12 is a structure for sealing between the J-shaped sealing ring and the flat cover 2; stick up foot 13 outward and be sealed primary structure between J-shaped sealing washer and the hubbed flange 3, stick up foot 13 outward and can contradict with the inner wall of hubbed flange 3, spacing through installation department 11, can make and stick up foot 13 and install the back and have certain deformation outward to form initial sealing force, initial sealing force's size is relevant except that the deflection of sticking up foot 13 outward, still is relevant with the power of 11 limiting displacement of installation department, the utility model discloses a setting up installation department 11 and realizing reliably spacingly, thereby provide sufficient initial sealing force. The embodiment of the utility model provides an in, stick up foot 13 outward and can warp under the pressure effect of the gas or liquid that receive in the pipeline, and the sealed effect further increases between the hubbed flange 3.
The J-shaped sealing ring 1 provided by the embodiment of the utility model can provide enough initial sealing force no matter whether the flat cover 2 is initially installed or not through the installation part 11, so as to prevent initial leakage; the length and the tortuosity of a sealing surface can be increased by arranging the sealing part 12 matched with the sealing structure on the flat cover 2, so that the sealing performance of the sealing ring is improved; radial initial sealing force can be provided by arranging the outward warping feet 13, the use of the inward warping feet in the conventional sealing ring is reduced, and the material utilization rate is improved. Can prevent that rubber part from extruding and tearing, improve the life of sealing washer, prevent sealed inefficacy.
As shown in fig. 2, as a preferred embodiment of the present invention, the mounting portion 11 is in interference fit with the sealing groove, and the mounting portion 11 has a quadrilateral structure.
The embodiment of the utility model provides an in, utilize the deformation of sealing washer material to realize the interference fit installation, interference fit can provide the leakproofness of installation face. In the embodiment of the present invention, the quadrilateral structure has an approximate structure, wherein the approximation includes that the connecting line can be a straight line or a curve similar to the straight line; the edge-to-edge corners may include small chamfers and are not strictly limited to four straight edges forming four corners. Furthermore, the quadrilateral structure may be a trapezoidal structure, and the short side (non-oblique side) of the trapezoidal structure is attached to the bottom edge of the sealing groove of the flat cover 2, which is beneficial to the installation of the J-shaped sealing ring.
As shown in fig. 3, as a preferred embodiment of the present invention, the sealing portion 12 includes a horizontal surface and a non-horizontal surface;
the horizontal plane is connected with the sealing side of the outward warped foot 13;
the non-horizontal surface is a side surface of the mounting portion 11.
In the embodiment of the present invention, the sealing structure on the flat cover 2 also includes a horizontal plane and a non-horizontal plane corresponding to the J-shaped sealing ring; in the embodiment of the present invention, the non-horizontal plane is preferably an inclined plane disposed obliquely to the horizontal plane rather than a vertical plane; preferably, the non-horizontal plane here may be a sloping side of the trapezoidal mounting portion 11, viewed in cross-section. Of course, this is only one specific form of the sealing portion 12 and is not intended to limit the scope of the present invention.
As shown in fig. 3, as a preferred embodiment of the present invention, the included angle between the horizontal plane and the non-horizontal plane is greater than or equal to 90 °.
As shown in fig. 3, as a preferred embodiment of the present invention, the bottom of the outward tilting leg 13 includes an arc segment and an inward chamfer.
The embodiment of the utility model provides an in, through setting up inside chamfer, can prevent that outer perk foot 13 from turning up when the J-shaped sealing washer is installed.
As a preferred embodiment of the present invention, the J-shaped sealing ring 1 is embedded with a spring skeleton 14.
The embodiment of the present invention provides an in, spring skeleton 14 can increase the structural strength of J-shaped sealing ring, preferably, spring skeleton 14 can use the metal material preparation, and the horizontal plane of sealing portion 12 in the above-mentioned embodiment of spring skeleton 14 position is regional with the inboard of the outside junction of outer perk foot 13, because this regional rubber is out of shape easily and extrudes, can strengthen this regional structural strength through setting up spring skeleton 14 in this position. It should be understood that the present invention provides a spring frame 14 that is not necessary, and the present invention provides another advantage in that the use of the spring frame 14 can be omitted, thereby reducing the cost, and when there is no spring frame 14, the J-shaped sealing ring is easy to stack up and store, is not easy to break, but can improve the strength by adding the spring frame 14, and this is the present invention provides two different alternatives.
As a preferred embodiment of the utility model, the J-shaped sealing ring 1 is made of fluororubber or nitrile rubber.
The embodiment of the utility model provides an in, the preferred fluororubber of J-shaped sealing washer or nitrile rubber preparation, the chemical stability of these two kinds of rubbers is good, is applicable to often need open, in the structure of closing.
As shown in fig. 1-3, the embodiment of the present invention further provides a J-shaped seal ring 1, wherein any cross section of the J-shaped seal ring 1 includes: a mounting portion 11, a sealing portion 12 and an outward warping leg 13;
the mounting part 11 is in interference fit with a sealing groove formed at the bottom of the flat cover 2 and used for mounting and fixing the J-shaped sealing ring 1, and the mounting part 11 is of a quadrilateral structure;
the sealing part 12 is matched with a sealing structure at the bottom of the flat cover 2, and the sealing part 12 comprises a horizontal plane and a non-horizontal plane; the horizontal plane is connected with the sealing side of the outward warped foot 13; the non-horizontal plane is one side surface of the mounting part 11, and an included angle between the horizontal plane and the non-horizontal plane is greater than or equal to 90 degrees;
the outer warped foot 13 is in interference fit with an inner hole of the hubbed flange 3 and is used for providing radial initial sealing force, and the bottom of the outer warped foot 13 comprises an arc line section and an inward chamfer;
the J-shaped sealing ring is made of fluororubber or nitrile rubber.
In the embodiment of the present invention, please refer to all the aforementioned embodiments for the specific structure and function of the J-shaped sealing ring, which is not described herein again. The J-shaped sealing ring 1 provided by the embodiment of the utility model can provide enough initial sealing force no matter whether the flat cover 2 is initially installed or not through the installation part 11, so as to prevent initial leakage; the length and the tortuosity of a sealing surface can be increased by arranging the sealing part 12 matched with the sealing structure on the flat cover 2, so that the sealing performance of the sealing ring is improved; radial initial sealing force can be provided by arranging the outward warping feet 13, the use of the inward warping feet in the conventional sealing ring is reduced, and the material utilization rate is improved. Can prevent that rubber part from extruding and tearing, improve the life of sealing washer, prevent sealed inefficacy.
As shown in fig. 1 and 2, the embodiment of the present invention further provides a quick-open structure, which includes:
the J-ring 1 according to any one of the above embodiments;
the bottom of the flat cover 2 is provided with a sealing groove matched with the mounting part 11 of the J-shaped sealing ring 1, the J-shaped sealing ring 1 is fixedly arranged at the bottom of the flat cover 2 through a retaining ring 4, and the flat cover 2 is further provided with a sealing structure matched with the sealing part 12;
the sealing structure comprises a high neck flange 3, wherein the flat cover 2 and the high neck flange 3 are detachably mounted through a lock ring 5, and the outer warped foot 13 of the J-shaped sealing ring 1 is in interference fit with an inner hole of the high neck flange 3 in a closed state of the flat cover 2.
The embodiment of the utility model provides an in, flat lid 2 and hubbed flange 3 are the subassembly in the current quick-open structure, to its structure and function, the utility model discloses no longer describe any more. Different from the prior art, the utility model provides a J-shaped sealing washer is fixed in 2 bottoms of protecgulum through retaining ring 4, and here retaining ring 4 can be the annular structure, through screw etc. and 2 bottom fixed connection of protecgulum, utilize retaining ring 4 to impress the installation department 11 of J-shaped sealing washer and realize fixed mounting in the seal groove of protecgulum 2. The lock ring 5 is connected with the high-neck flange 3 and the flat cover 2, can be opened or contracted, is opened in a working state, tightly supports the high-diameter flange 3, and cannot be opened by the flat cover 2; after pressure relief, the cover can be retracted inwards and separated from the neck flange 3, and the flat cover 2 can be opened. This is the direct application of prior art, and the utility model discloses no longer describe to this.
In the embodiment of the utility model, the leap cover is also provided with a sealing structure which is matched with the sealing part 12 of the J-shaped sealing ring to realize the sealing between the J-shaped sealing ring and the flat cover 2; and the cooperation of the outward warped foot 13 and the inner wall of the hubbed flange 3 realizes the sealing between the J-shaped sealing ring and the hubbed flange 3. For the structure and function of the J-shaped sealing ring, reference may be made to all the embodiments described above, and this embodiment is not described again.
The quick-opening structure provided by the embodiment of the utility model comprises a J-shaped sealing ring 1, and the J-shaped sealing ring 1 can provide enough initial sealing force to prevent initial leakage no matter whether the flat cover 2 is initially installed or not by arranging the installation part 11; the length and the tortuosity of a sealing surface can be increased by arranging the sealing part 12 matched with the sealing structure on the flat cover 2, so that the sealing performance of the sealing ring is improved; radial initial sealing force can be provided by arranging the outward warping feet 13, the use of the inward warping feet in the conventional sealing ring is reduced, and the material utilization rate is improved. The stress state of the sealing ring can be improved, the local extrusion and tearing of rubber are prevented, the service life of the sealing ring is prolonged, and sealing failure is prevented.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A J-ring, wherein any cross-section of the J-ring comprises: the mounting part, the sealing part and the outer warping foot;
the mounting part is matched with a sealing groove formed at the bottom of the flat cover and used for mounting and fixing the J-shaped sealing ring;
the sealing part is matched with a sealing structure at the bottom of the flat cover;
the outward warped foot is in interference fit with an inner hole of the hubbed flange and used for providing radial initial sealing force.
2. The J-ring seal of claim 1, wherein said mounting portion is an interference fit with said seal groove, said mounting portion having a quadrilateral configuration.
3. The J-ring seal of claim 1 wherein said seal portion includes a horizontal surface and a non-horizontal surface;
the horizontal plane is connected with the sealing side of the outward warped foot;
the non-horizontal surface is one side surface of the mounting part.
4. The J-ring seal of claim 3 wherein said horizontal plane is at an angle greater than or equal to 90 ° to said non-horizontal plane.
5. The J-ring as defined in claim 1 wherein the bottom of said upturned leg includes an arc segment and an inward chamfer.
6. The J-ring as defined in claim 1 wherein the J-ring has a spring skeleton embedded therein.
7. The J-ring seal of claim 1 wherein said J-ring seal is made of a fluoroelastomer or a nitrile rubber.
8. The J-ring seal of claim 1 wherein said raised foot portion has a diameter less than the largest diameter of said J-ring seal.
9. A J-ring, wherein any cross-section of the J-ring comprises: the mounting part, the sealing part and the outer warping foot;
the installation part is in interference fit with a sealing groove formed in the bottom of the flat cover and used for installing and fixing the J-shaped sealing ring, and the installation part is of a quadrilateral structure;
the sealing part is matched with a sealing structure at the bottom of the flat cover, and comprises a horizontal plane and a non-horizontal plane; the horizontal plane is connected with the sealing side of the outward warped foot; the non-horizontal plane is one side surface of the mounting part, and an included angle between the horizontal plane and the non-horizontal plane is larger than or equal to 90 degrees;
the outer warped foot is in interference fit with an inner hole of the high-neck flange and used for providing radial initial sealing force, and the bottom of the outer warped foot comprises an arc line section and an inward chamfer;
the J-shaped sealing ring is made of fluororubber or nitrile rubber.
10. A quick-open structure, characterized in that it comprises:
the J-ring seal of any one of claims 1-9;
the bottom of the flat cover is provided with a sealing groove matched with the mounting part of the J-shaped sealing ring, the J-shaped sealing ring is fixedly arranged at the bottom of the flat cover through a retaining ring, and the flat cover is also provided with a sealing structure matched with the sealing part;
the flat cover and the high-neck flange are detachably mounted through a lock ring, and the outer warping foot of the J-shaped sealing ring is in interference fit with the inner hole of the high-neck flange in a closed state of the flat cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020265346.5U CN212055825U (en) | 2020-03-06 | 2020-03-06 | J-shaped sealing ring and quick opening structure using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020265346.5U CN212055825U (en) | 2020-03-06 | 2020-03-06 | J-shaped sealing ring and quick opening structure using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212055825U true CN212055825U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020265346.5U Expired - Fee Related CN212055825U (en) | 2020-03-06 | 2020-03-06 | J-shaped sealing ring and quick opening structure using same |
Country Status (1)
| Country | Link |
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| CN (1) | CN212055825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197656A (en) * | 2020-03-06 | 2020-05-26 | 北京化工大学 | J-shaped sealing ring and quick opening structure using same |
-
2020
- 2020-03-06 CN CN202020265346.5U patent/CN212055825U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197656A (en) * | 2020-03-06 | 2020-05-26 | 北京化工大学 | J-shaped sealing ring and quick opening structure using same |
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Granted publication date: 20201201 |