CN112664819B - Sealing switch device and gas filter - Google Patents
Sealing switch device and gas filter Download PDFInfo
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- CN112664819B CN112664819B CN202011413921.2A CN202011413921A CN112664819B CN 112664819 B CN112664819 B CN 112664819B CN 202011413921 A CN202011413921 A CN 202011413921A CN 112664819 B CN112664819 B CN 112664819B
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- sealing ring
- cover
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- upper cover
- sealing
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a sealing switch device and a gas filter. The sealing switch device comprises a cylinder body, a cover body and a sealing ring, wherein the cover body comprises an upper cover and a lower cover, the upper cover is fixedly connected with the cylinder body, and the upper cover is rotatably connected with the lower cover and can move along the extension direction of the axis of the rotating shaft relative to the upper cover; the lower cover further comprises a connecting portion, the sealing ring is sleeved outside the connecting portion, and when the lower cover moves along the extending direction of the axis of the rotating shaft, the lower cover can push the sealing ring to be tightly attached to the inner side wall of the barrel. In addition, the invention also discloses a gas filter, because the pressure exists in the cylinder body, larger pressure can be applied to the lower cover, the lower cover can further compress the sealing ring, the sealing performance is greatly improved, the connection reliability of the upper cover, the lower cover and the cylinder body is also improved, and the gas filter can be prevented from leaking.
Description
Technical Field
The invention relates to the technical field of pressure container structures, in particular to a sealing switch device and a gas filter.
Background
The gas filter is widely used in gas supply systems with high pressure (0.4Mpa < P < 4.0Mpa), medium pressure (0.01Mpa < P < 0.4Mpa) and low pressure (P < 0.01Mpa), plays roles in purifying gas, protecting pipelines and equipment, improving combustion quality and improving energy utilization efficiency, and is indispensable filtering equipment in gas transmission and distribution production.
At present, traditional pressure vessel sealing form adopts bolt-up mode and a section of thick bamboo body coupling more, and in sealed principle, traditional flange piece bolt-up formula pressure vessel relies on bolted connection to compress tightly lip seal ring and seals, and its leakproofness relies on two flange pieces to follow the mutual clamp force of thickness direction, and stability is not enough, has the bad problem of leakproofness.
Disclosure of Invention
The invention provides a sealing switch device and a gas filter, which are used for solving the problem of poor sealing property in the prior art.
In order to solve the technical problem, the invention provides a sealing switch device, which comprises a cylinder body, a cover body and a sealing ring, wherein the cover body comprises an upper cover and a lower cover, the upper cover is fixedly connected with the cylinder body, and the upper cover is rotatably connected with the lower cover and can move along the extension direction of a rotating shaft axis relative to the upper cover; the lower cover further comprises a connecting portion, the sealing ring is sleeved outside the connecting portion, and when the lower cover moves along the extending direction of the axis of the rotating shaft, the lower cover can push the sealing ring to be tightly attached to the inner side wall of the barrel.
Above-mentioned sealed switching device, through fixing the upper cover on the barrel, it forms the effort of vertical extrusion sealing washer, and upper cover and lower cover rotate to be connected and can move along the extending direction of pivot axis relatively the upper cover. Therefore, when the lower cover is rotated, the lower cover can move upwards relative to the upper cover because the upper cover is fixed. Because the sealing ring is sleeved outside the connecting part and can be tightly attached to the inner side wall of the barrel under the pushing of the lower cover, when the upper cover moves upwards, the sealing ring can be expanded outwards and tightly attached to the inner side wall of the barrel, so that a good sealing effect is achieved.
Preferably, an inner side of the connecting part is screw-coupled with an outer side of the upper cap.
Preferably, a side surface of the seal ring and/or the connecting portion opposite to each other forms a guide slope inclined from bottom to top and from an outer side to an inner side in a radial direction of the seal ring.
Therefore, the sealing ring can be better extruded through the guide inclined surface to form an acting force for transversely extruding the sealing ring, so that the sealing ring is outwards expanded; through mutually perpendicular's vertical effort and transverse force, the whole atress of sealing washer is more even for whole device has improved sealing stability.
Preferably, the sealing ring is provided with a protrusion, one side of the protrusion extends to the outer edge of the sealing ring, and the barrel is provided with a groove for the protrusion to be embedded into so as to limit the rotation of the sealing ring relative to the barrel.
Preferably, the protrusion is arranged on the lower end surface of the sealing ring, the inner side wall of the cylinder body protrudes inwards to form an annular step surface, and the annular step surface is provided with the groove.
Preferably, the lower cover includes a projection passing through the center of the upper cover.
Preferably, still include drive structure, drive structure includes the pull rod and the lantern ring, the lantern ring cover is located on the bulge, the pull rod wear to establish the lantern ring with the bulge and with lantern ring bolt fixed connection.
In addition, the invention also provides a gas filter, which comprises a gas inlet pipe, a gas outlet pipe and the sealing switch device, wherein the gas inlet pipe and the gas outlet pipe are both communicated with the cylinder body.
Above-mentioned gas filter, the barrel, cooperation between upper cover and the lower cover, make the sealing washer receive axial and radial extrusion, the sealed effect of sealing washer has been guaranteed, when gaseous by intake pipe entering barrel and by the outlet duct discharge, the internal pressurized of barrel, there is pressure in the barrel this moment, it can apply great pressure to the lower cover, can make the lower cover further compress tightly the sealing washer, sealing performance has not only been increased substantially, the upper cover has also been improved simultaneously, the connection reliability of lower cover and barrel, can prevent that above-mentioned gas filter from taking place to leak.
Drawings
FIG. 1 is a schematic view of the overall structure in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a seal ring in an embodiment of the present invention.
In the figure, the position of the upper end of the main shaft,
1. the device comprises a cylinder body 21, an upper cover 22, a lower cover 221, a connecting part 222, a protruding part 3, a sealing ring 31, a protrusion 32, a convex strip 4, a driving structure 41, a pull rod 42 and a sleeve ring.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
It should be noted that the drawings of the present embodiment are only schematic system drawings, and do not represent all the components of the present invention, and the core principle of the present embodiment is the same as that of the present embodiment by adding components to the present system.
Referring to fig. 1, an embodiment of the present invention provides a sealed opening and closing device, including a cylinder 1, a cover body and a sealing ring 3, where the cover body includes an upper cover 21 and a lower cover 22, the upper cover 21 is fixedly connected to the cylinder 1, and the upper cover 21 is rotatably connected to the lower cover 22 and can move along an extending direction of a rotation axis relative to the upper cover 21; the lower cover 22 further comprises a connecting portion 221, the sealing ring 3 is sleeved outside the connecting portion 221, and when the lower cover 22 moves along the extending direction of the axis of the rotating shaft, the lower cover 22 can push the sealing ring 3 to cling to the inner side wall of the cylinder 1.
Based on the technical scheme, the embodiment of the invention discloses a sealing switch device, an upper cover 21 is fixed on a cylinder body 1, acting force for vertically extruding a sealing ring 3 is formed, and the upper cover 21 is rotatably connected with a lower cover 22 and can move relative to the upper cover 21 along the extension direction of the axis of a rotating shaft. Therefore, when the lower cap 22 is rotated, the lower cap 22 can be moved upward relative to the upper cap 21 since the upper cap 21 is fixed. Because the sealing ring 3 is sleeved outside the connecting portion 221 and can be tightly attached to the inner side wall of the cylinder 1 under the pushing of the lower cover 22, when the upper cover 21 moves upwards, the sealing ring 3 can be expanded outwards and tightly attached to the inner side wall of the cylinder 1, so that a good sealing effect is achieved.
Preferably, the sealing ring 3 is an O-ring. The connecting portion 221 and the upper cover 21 can be rotatably connected in various manners, such as hinge connection or riveting connection, and preferably, the inner side of the connecting portion 221 in this embodiment is screwed with the outer side of the upper cover 21, so that when the upper cover 21 is fixed, the position of the lower cover 22 can be adjusted by screwing, and the screw connection manner is characterized by stable connection and high reliability.
Furthermore, a guide inclined plane is formed on the opposite side surface of the sealing ring 3 and/or the connecting portion 221, the guide inclined plane inclines inwards from bottom to top along the radial outer side of the sealing ring 3, that is, in the structural matching of the sealing ring 3 and the connecting portion 221, as long as the opposite side surface of the sealing ring 3 and the connecting portion 221 forms a guide inclined plane which inclines inwards from bottom to top along the radial outer side of the sealing ring 3, the matching portion of the connecting portion 221 and the connecting portion can be in other shapes, and the structural form corresponding to the guide inclined plane is not required. Therefore, after the sealing ring 3 is installed in the cylinder 1, the sealing ring 3 can be pushed to expand outwards through the guide inclined surface, so that the sealing ring 3 is further abutted against the inner wall of the cylinder 1, and a certain included angle exists between the wedge-shaped surface and the horizontal direction, so that the horizontal component force and the vertical component force of the sealing ring 3 can be decomposed, namely two mutually perpendicular pressing forces are formed on the sealing ring 3, and the sealing stability is improved.
Further, with reference to fig. 2, in order to prevent the lower cover 22 from driving the sealing ring 3 to rotate in the rotating process, a protrusion 31 is disposed on the lower side of the sealing ring 3, one side of the protrusion 31 extends to the outer edge of the sealing ring 3, a groove (not shown in the figure) for the protrusion 31 to be embedded and mounted is disposed on the cylinder 1, and the protrusion 31 can be prevented from being extended to the outer edge of the sealing ring, so that the sealing ring 3 cannot be expanded outwards when the connecting portion 221 extrudes the sealing ring 3. In addition, the bulge 31 can also be designed on the upper surface of the sealing ring 3, and the upper cover 21 is also provided with a groove for the bulge 31 to be embedded in; and, the bulge 31 can also be designed on the outer side surface of the sealing ring 3, and the inner wall of the cylinder 1 is provided with a groove for the bulge 31 to be embedded in. It should be noted that when the protrusion is provided on the outer side of the sealing ring, one side of the protrusion does not need to extend to the edge of the outer side, and may be provided at any position of the side, which is not required for size and position. Preferably, the number of the protrusions 31 is three, and the protrusions are uniformly arranged in the circumferential direction.
Further, referring to fig. 2, in order to make the sealing ring 3 more easily move relative to the cylinder 1 and the upper cover 21 when the lower cover 22 pushes the sealing ring 3 to expand outward, the upper surface and the lower surface of the sealing ring 3 are provided with a plurality of ribs 32, the plurality of ribs 32 are in contact with the cylinder 1 and the upper cover 21, and preferably, the plurality of ribs 32 are concentric with and spaced apart from the sealing ring 3, and by providing the plurality of ribs 32, leakage of the sealing ring due to frictional damage of the ribs can be reduced, and the stability of sealing can be improved.
Further, referring to fig. 1, the lower cover 22 includes a protruding portion 222 penetrating through the center of the upper cover 21, so that the lower cover 22 can move up and down relative to the upper cover 21 by rotating the protruding portion 222, and the feature of uniform force is provided.
Further, the embodiment of the present invention further includes a driving structure 4, where the driving structure 4 includes a pull rod 41 and a collar 42, the collar 42 is sleeved on the protrusion 222, the pull rod 41 penetrates the collar 42 and the protrusion 222 and is fixedly connected to the collar 42 by a bolt, and specifically, the right end of the pull rod 41 is fixedly connected to the collar 42 by a bolt. Through setting up the drive structure for it is more simple and efficient when rotating bulge 222, need not artifical rotating bulge 222 or set up motor drive bulge 222 again and rotate.
The embodiment of the invention also provides a gas filter, which comprises a gas inlet pipe, a gas outlet pipe and the sealing switch device, wherein the gas inlet pipe and the gas outlet pipe are both communicated with the cylinder body 1. Barrel 1, the cooperation between upper cover 21 and the lower cover 22, make sealing washer 3 receive axial and radial extrusion, the sealed effect of sealing washer 3 has been guaranteed, when gaseous by intake pipe entering barrel 1 and by the outlet duct discharge, the internal pressurized of barrel 1, there is pressure in barrel 1 this moment, it can apply great pressure to lower cover 22, can make lower cover 22 further compress tightly sealing washer 3, sealing performance has not only been increased substantially, the upper cover 21 has also been improved simultaneously, the connection reliability of lower cover 22 and barrel 1, can prevent that above-mentioned gas filter from taking place to leak. It is noted that the inlet and outlet tubes are not shown in the figures and may be flexible tubes or metal tubes.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (4)
1. A sealed switch device is characterized by comprising a cylinder body, a cover body, a sealing ring and a driving structure, wherein the cover body comprises an upper cover and a lower cover, the upper cover is fixedly connected with the cylinder body, the upper cover is rotatably connected with the lower cover, and the lower cover can move along the extension direction of a rotating shaft axis relative to the upper cover;
the lower cover also comprises a connecting part and a convex part penetrating through the center of the upper cover, the upper surface of the connecting part is provided with a concave part, and the lower surface of the upper cover is provided with a convex part matched with the concave part; the sealing ring is sleeved outside the connecting part, a guide inclined plane is formed on one side surface of the sealing ring and/or the connecting part, the guide inclined plane inclines inwards from bottom to top along the radial outer side of the sealing ring, and when the lower cover moves along the extension direction of the axis of the rotating shaft, the lower cover can push the sealing ring to be tightly attached to the inner side wall of the cylinder body;
the driving structure comprises a pull rod and a sleeve ring, the sleeve ring is sleeved on the protruding part, and the pull rod penetrates through the sleeve ring and the protruding part and is fixedly connected with the sleeve ring through a bolt;
the lower surface of sealing washer is equipped with the arch, bellied one side extends to the outer fringe of sealing washer, the barrel is equipped with the confession protruding embedding is in order to be used for restricting the relative barrel pivoted recess of sealing washer.
2. The sealed opening and closing device of claim 1, wherein an inner side of the connecting portion is screw-coupled with an outer side of the upper cover.
3. The sealed switch device of claim 1, wherein the protrusion is disposed on the lower end surface of the sealing ring, the inner sidewall of the cylinder protrudes inward to form an annular step surface, and the annular step surface is provided with the groove.
4. A gas filter comprising a gas inlet pipe, a gas outlet pipe and a sealing switch device as claimed in any one of claims 1 to 3, wherein the gas inlet pipe and the gas outlet pipe are both communicated with the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011413921.2A CN112664819B (en) | 2020-12-04 | 2020-12-04 | Sealing switch device and gas filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011413921.2A CN112664819B (en) | 2020-12-04 | 2020-12-04 | Sealing switch device and gas filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112664819A CN112664819A (en) | 2021-04-16 |
| CN112664819B true CN112664819B (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011413921.2A Active CN112664819B (en) | 2020-12-04 | 2020-12-04 | Sealing switch device and gas filter |
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| Country | Link |
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| CN (1) | CN112664819B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115638369B (en) * | 2022-12-23 | 2023-03-28 | 江苏皓宇特种设备制造有限公司 | Boiler pressure vessel with anti-leakage structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201181010Y (en) * | 2007-08-24 | 2009-01-14 | 广州市煤气公司 | Novel gas filter |
| AT509210B1 (en) * | 2010-05-03 | 2011-07-15 | Andritz Tech & Asset Man Gmbh | DEVICE FOR THE HERMETIC CLOSURE OF BIG OPENINGS IN APPARATUS |
| CN108626396B (en) * | 2018-06-11 | 2023-12-05 | 广州发展集团股份有限公司 | Axial sealing switch device and method and gas filter |
| CN209309306U (en) * | 2018-11-20 | 2019-08-27 | 苏州伯仲科技有限公司 | A kind of wedge-type seal structure for ultrahigh pressure vessel |
| CN210241534U (en) * | 2019-05-20 | 2020-04-03 | 无锡锡洲封头制造有限公司 | Reinforced type lock-edge type seal head |
| CN110285315A (en) * | 2019-05-28 | 2019-09-27 | 江阴市富仁高科股份有限公司 | A kind of high-pressure hydrogen storage of the both ends with sealing structure |
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| CN112664819A (en) | 2021-04-16 |
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