CN214551823U - Sealing switch device of gas filter - Google Patents

Abstract

The utility model discloses a gas filter seals switching device. The sealing switch device of the gas filter 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 part, the sealing ring is sleeved outside the connecting part, 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; and raised lines are arranged on the upper surface and/or the lower surface of the sealing ring. The utility model provides a current gas filter seal switch device leakproofness problem bad.

Description

Sealing switch device of gas filter

Technical Field

The utility model relates to a pressure vessel technical field especially relates to a gas filter seals switching device.

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.

SUMMERY OF THE UTILITY MODEL

The utility model provides a gas filter seals switching device for solve the problem that prior art leakproofness is bad.

In order to solve the technical problem, the utility model provides a gas filter 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 extending direction of the axis of a rotating shaft relative to the upper cover; the lower cover further comprises a connecting part, the sealing ring is sleeved outside the connecting part, 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 upper surface and/or the lower surface of the sealing ring are/is provided with convex strips

Above-mentioned gas filter seals switching device, through fixing the upper cover on the barrel, its effort that forms 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 washer cover is established outside connecting portion to can paste the inside wall of tight barrel under the promotion of lower cover, consequently when upper cover upward movement, can make the sealing washer outwards expand, hug closely the inside wall of barrel, reach good sealed effect with this.

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 number of the convex strips is multiple, and the convex strips and the sealing ring are concentric and arranged at intervals.

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.

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 the embodiments of the present invention is provided with reference to 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 of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

It should be noted that the attached drawing of the scheme is only a schematic system diagram, and does not show all the components of the present invention, and the components are added in the system, and the core principle is still the same as the scheme.

Referring to fig. 1, an embodiment of the present invention provides a gas filter sealing switch device, which includes a cylinder 1, a cover body and a sealing ring 3, wherein 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 rotating shaft 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 above technical scheme, the embodiment of the utility model discloses gas filter seals switching device through fixing upper cover 21 on barrel 1, and it forms vertical extrusion sealing circle 3's effort, and upper cover 21 rotates with lower cover 22 to be connected and can move along the extending direction of pivot axis relative upper cover 21. 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 lower cover 22 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 need not extend to the edge of the outer side, and may be provided at any position on 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 lower cover 22 more easily move the sealing ring 3 relative to the cylinder 1 and the upper cover 21 when pushing the sealing ring 3 to expand outward, the upper surface and the lower surface of the sealing ring 3 are provided with the protruding strips 32, the protruding strips 32 are in contact with the cylinder 1 and the upper cover 21, the number of the protruding strips may be multiple, preferably, the protruding strips 32 are concentric with the sealing ring 3 and are arranged at intervals, and by providing the plurality of protruding strips 32, leakage of the sealing ring due to friction damage of the protruding strips can be reduced, and the stability of sealing is improved.

Further, referring to fig. 1, the lower cover 22 includes a protrusion 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 protrusion 222, and the feature of uniform force is provided.

Further, the embodiment of the utility model provides a still include drive structure 4, drive structure 4 includes pull rod 41 and lantern ring 42, and on the bulge 222 was located to the lantern ring 42 cover, pull rod 41 wore to establish lantern ring 42 and bulge 222 and with lantern ring 42 bolt fixed connection, specifically be pull rod 41 right-hand member portion make its and lantern ring 42 fixed connection with the help of the bolt. Through setting up drive structure for when rotating bulge 222 simple and convenient swift, need not artifical rotatory bulge 222 or set up motor drive bulge 222 again and rotate.

The embodiment of the utility model provides a still provide a gas filter, reach as above including intake pipe, outlet duct the gas filter seal switch device, intake pipe, outlet duct all communicate with barrel 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 foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (8)

1. The sealing switch device of the gas filter is characterized by comprising a cylinder, 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, 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 part, the sealing ring is sleeved outside the connecting part, 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; and raised lines are arranged on the upper surface and/or the lower surface of the sealing ring.

2. The gas filter seal opening and closing device according to claim 1, wherein an inner side of said connecting portion is screw-coupled to an outer side of said upper cover.

3. The gas filter seal opening and closing device according to claim 1, wherein a side surface of said seal ring and/or said connecting portion opposite thereto is formed with a guide slope inclined from bottom to top and from an outer side to an inner side in a radial direction of said seal ring.

4. The gas filter seal switch assembly of claim 1, wherein said seal ring has a protrusion on a lower surface thereof, one side of said protrusion extending to an outer edge of said seal ring, said barrel having a groove into which said protrusion is inserted for limiting rotation of said seal ring relative to said barrel.

5. The gas filter sealing switch device according to claim 4, wherein said protrusion is disposed on a lower end surface of said sealing ring, an inner side wall of said cylinder protrudes inward to form an annular step surface, and said annular step surface is provided with said groove.

6. The gas filter seal switch assembly of claim 1 wherein said bead is a plurality of beads, said plurality of beads being concentric with and spaced from said gasket.

7. The gas filter seal switch assembly of claim 1, wherein said lower cover includes a projection centrally disposed through said upper cover.

8. The gas filter seal switch device of claim 7, further comprising a drive structure, said drive structure including a pull rod and a collar, said collar being sleeved on said protrusion, said pull rod passing through said collar and said protrusion and being in fixed connection with said collar bolt.

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