CN218480165U - Inflatable shaft sealing device - Google Patents
Inflatable shaft sealing device Download PDFInfo
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- CN218480165U CN218480165U CN202222712788.1U CN202222712788U CN218480165U CN 218480165 U CN218480165 U CN 218480165U CN 202222712788 U CN202222712788 U CN 202222712788U CN 218480165 U CN218480165 U CN 218480165U
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- ring
- shaft sleeve
- moving ring
- driving pin
- hole
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Abstract
The utility model discloses an inflatable shaft sealing device, which comprises a left static ring, a right static ring, a sealing gasket, a left movable ring, a right movable ring, a compensation spring, a transmission pin, a shaft sleeve and a positioning clamping plate; the left movable ring and the right movable ring are installed in a sliding fit mode with the shaft sleeve, the cylindrical compensation spring enables the left movable ring and the right movable ring to be in vertical end face contact friction fit with the left stationary ring and the right stationary ring respectively, and the shaft sleeve enables the shaft sleeve to be located and assembled on the left stationary ring through the clamping groove and the clamping plate. The transmission is reliable, the end face sealing matching can be automatically compensated, the service life is long, and the use, installation, maintenance, assembly and disassembly are convenient.
Description
Technical Field
The utility model relates to a shaft seal device, especially an inflatable shaft seal device.
Background
Inflatable shaft seals are used in rotary conveyors, mixers and crushers. An existing inflatable shaft sealing device, such as an inflatable end face seal disclosed in CN2018222450254, is composed of a driving ring, a left moving ring, a right moving ring, a left stationary ring, a right stationary ring, and a stationary ring gasket.
The driving ring fixed mounting is in the pivot, left side rotating ring and right side rotating ring are respectively through the side of controlling of inside spigot groove fixed mounting at the driving ring, the driving ring drives left side rotating ring and right side rotating ring and rotates along with the axle together, set up quiet ring packing pad between quiet ring in left side and the quiet ring in right side, the quiet ring in left side and the quiet ring in right side pass through bolt fixed connection together, the quiet ring in right side and equipment box fixed connection, its left side rotating ring and right side rotating ring set up in the inner chamber that quiet ring in left side and the quiet ring in right side formed together with the driving ring, it aerifys to the inner chamber to have seted up the inlet port on the quiet ring in left side, so that the atmospheric pressure of inner chamber is greater than the pressure in the equipment, the outside terminal surface of left side rotating ring and right side rotating ring cooperates with the quiet ring in left side and the quiet ring in right side respectively, it is sealed to form dry gas formula friction end, prevent the medium in the equipment from outwards leaking.
Above-mentioned inflatable shaft seal device is particularly suitable for stirring mixing apparatus pivot sealed use, its shortcoming: firstly, the integration is not carried out, the installation, the use and the maintenance are inconvenient, and the installation precision is difficult to ensure; the friction fit clearance between the left movable ring and the right movable ring and the static ends of the left static ring and the right static ring is inconvenient to adjust, and the clearance can be adjusted only by replacing a static ring sealing gasket between the left static ring and the right static ring; and in the use one end face friction fit clearance grow, surpass the design requirement, will cause sealed disappointing volume to increase greatly, influence sealed effect, can only adjust through changing the quiet ring packing pad that sets up between the quiet ring in left side and the quiet ring in right side once more, life is low, and the maintenance volume is big.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the not enough improvement of above-mentioned prior art, provide one kind and be convenient for install and use and maintenance, the transmission is reliable, can the sealed cooperation of automatic compensation end face, sealing performance reliable and stable inflatable shaft seal device.
The utility model relates to an inflatable shaft sealing device, which comprises a left stationary ring, a right stationary ring, a sealing gasket and a shaft sleeve, wherein the left stationary ring is provided with an inner spigot groove, and the outer circular wall of the left stationary ring is provided with an inflatable air inlet; the left stationary ring and the right stationary ring are fixedly connected through screws, a sealing gasket is arranged between the matching surfaces of the left stationary ring and the right stationary ring, and the left stationary ring and the right stationary ring are characterized in that:
a spigot convex ring is arranged in the middle of the shaft sleeve, a left moving ring is arranged on the left outer circular surface of the shaft sleeve spigot convex ring in a sliding fit manner, a right moving ring is arranged on the right outer circular surface of the shaft sleeve spigot convex ring in a sliding fit manner, a plurality of spring penetrating holes are distributed on the spigot convex ring of the shaft sleeve circumferentially, a spring seat concave hole is arranged on the inner vertical end surface of the left moving ring corresponding to the spring penetrating holes, a spring seat concave hole is arranged on the inner vertical end surface of the right moving ring, a cylindrical compensation spring is arranged in the spring penetrating holes arranged on the shaft sleeve spigot convex ring in a penetrating manner, the left end and the right end of the cylindrical compensation spring are respectively arranged in the spring seat concave hole of the left moving ring and the spring seat concave hole of the right moving ring, and the cylindrical compensation spring exerts pressure on the left moving ring and the right moving ring to enable the left moving ring and the right moving ring to be respectively in contact friction fit with the inner vertical end surfaces of the left stationary ring and the right stationary ring, so as to form end surface sealing;
a transmission pin hole is formed in a spigot convex ring of the shaft sleeve, a transmission pin concave hole is formed in the inner vertical end face of the left rotating ring corresponding to the transmission pin hole, a transmission pin concave hole is formed in the inner vertical end face of the right rotating ring, a transmission pin is fixedly installed on the transmission pin hole formed in the spigot convex ring of the shaft sleeve, the left end and the right end of the transmission pin hole are respectively matched with the transmission pin concave hole formed in the left rotating ring and the transmission pin concave hole formed in the right rotating ring, and the left rotating ring and the right rotating ring are driven to rotate along with the shaft sleeve;
the end part of the outer end of the shaft sleeve is provided with a shaft sleeve positioning clamping groove, the vertical end surface of the outer side of the left stationary ring is fixedly connected with a positioning clamping plate through a set screw, and the positioning clamping plate is matched with the shaft sleeve positioning clamping groove arranged on the shaft sleeve to ensure that the shaft sleeve is positioned and assembled on the left stationary ring.
Furthermore, a sliding sealing ring is arranged between the inner hole of the left rotating ring and the outer circular surface of the shaft sleeve, and a sliding sealing ring is arranged between the inner hole of the right rotating ring and the outer circular surface of the shaft sleeve; and a sealing ring is arranged between the inner hole of the shaft sleeve and the outer circular surface of the rotating shaft.
The utility model discloses the transmission is reliable, can automatic compensation end face seal cooperation, passes through the installation of bolt and the disposable fixed connection of equipment by the quiet ring in the right side, and the axle sleeve is along with the quiet ring in a left side and the quiet ring in the right side is direct to be fixed a position with the pivot cooperation, then the outer tip of axle sleeve is with holding screw and pivot fastening connection, and it need not fix a position the installation to the axle sleeve alone, convenient to use installation and maintenance loading and unloading.
The utility model discloses left side rotating ring and right rotating ring automatic compensation under the compensation spring pressure effect makes left side rotating ring and right rotating ring keep pasting with the medial surface of left quiet ring sum right quiet ring respectively and leans on the cooperation, keeps essential terminal surface mating pressure and sealing performance, can not produce left rotating ring or right rotating ring one side and pastes and lean on sealedly, and opposite side right rotating ring or left rotating ring produce the clearance phenomenon, long service life, maintenance volume significantly reduced. The problems that in the prior art, the inner side surfaces of a left movable ring and a left static ring or a right movable ring and a right static ring are attached and matched, an installation gap is easily generated, the gap is influenced by abrasion under operation, and the sealing performance is lost are solved; the defect that in the prior art, after the left rotating ring and the right rotating ring are attached to and matched with the inner side surfaces of the left static ring and the right static ring to generate gaps, the thickness of a static ring sealing gasket arranged between the left static ring and the right static ring needs to be changed for adjustment is overcome.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure: the sealing structure comprises a left static ring 1, a right static ring 2, a sealing gasket 3, a left movable ring 4, a right movable ring 5, a compensating spring 6, a transmission pin 7, a shaft sleeve 8, a positioning clamping plate 9, an inner spigot groove 10, an inflation air inlet 11, a spigot convex ring 80, a spring seat concave hole 41, a transmission pin concave hole 42, a spring seat concave hole 51, a transmission pin concave hole 52, an O-shaped sliding sealing ring 81, an O-shaped sliding sealing ring 82, an O-shaped sealing ring 83, a spring penetrating hole 84, a transmission pin hole 85 and a shaft sleeve positioning clamping groove 86.
Detailed Description
The utility model discloses constitute by left quiet ring 1, right quiet ring 2, sealed pad 3, left rotating ring 4, right rotating ring 5, compensating spring 6, driving pin 7, axle sleeve 8 and location cardboard 9.
The left stationary ring 1 is provided with an inner spigot groove 10, and the outer circular wall of the left stationary ring 1 is provided with an air inlet 11; the left stationary ring 1 and the right stationary ring 2 are fixedly connected through screws, and a sealing gasket 3 is arranged between the matching surfaces of the left stationary ring 1 and the right stationary ring 2.
A spigot convex ring 80 is arranged in the middle of the shaft sleeve 8, the left rotating ring 4 and the left outer circular surface of the spigot convex ring 80 of the shaft sleeve 8 are installed in a sliding fit manner, an O-shaped sliding sealing ring 81 is arranged between the inner hole of the left rotating ring 4 and the outer circular surface of the shaft sleeve 8, the right rotating ring and the right outer circular surface of the spigot convex ring 80 of the shaft sleeve 8 are installed in a sliding fit manner, and an O-shaped sliding sealing ring 82 is arranged between the inner hole of the right rotating ring 5 and the outer circular surface of the shaft sleeve 8; an O-shaped sealing ring 83 is arranged between the inner hole of the shaft sleeve 8 and the outer circular surface of the rotating shaft A.
A plurality of spring penetrating holes 84 are circumferentially distributed on the spigot convex ring 80 of the shaft sleeve 8, spring seat concave holes 41 are formed in the inner vertical end face of the left moving ring 4 corresponding to the spring penetrating holes 84, spring seat concave holes 51 are formed in the inner vertical end face of the right moving ring 5, a cylindrical compensating spring 6 penetrates the spring penetrating holes 84 formed in the spigot convex ring 80 of the shaft sleeve 8, the left end and the right end of the cylindrical compensating spring 6 are respectively installed in the spring seat concave holes 41 of the left moving ring 4 and the spring seat concave holes 51 of the right moving ring 5, and the cylindrical compensating spring 6 applies pressure to the left moving ring 4 and the right moving ring 5, so that the left moving ring 4 and the right moving ring 5 are respectively in contact friction fit with the inner vertical end faces of the left static ring 1 and the right static ring 2 to form end face sealing; the spigot convex ring 80 of the shaft sleeve 8 is provided with a transmission pin hole 85, corresponding to the transmission pin hole 85, the inner vertical end surface of the left moving ring 4 is provided with a transmission pin concave hole 42, the inner vertical end surface of the right moving ring 5 is provided with a transmission pin concave hole 52, the transmission pin 7 is fixedly arranged on the transmission pin hole 85 arranged on the spigot convex ring 80 of the shaft sleeve 8, the left end and the right end of the transmission pin hole 85 are respectively matched with the transmission pin concave hole 42 arranged on the left moving ring 4 and the transmission pin concave hole 52 arranged on the right moving ring 2, and the left moving ring 4 and the right moving ring 5 are driven to rotate along with the shaft sleeve 8.
The outer side end of the shaft sleeve 8 is provided with a shaft sleeve positioning clamping groove 86, the outer side vertical end face of the left stationary ring 1 is fixedly connected with a positioning clamping plate 9 through a set screw, and the positioning clamping plate 9 is matched with the shaft sleeve positioning clamping groove 86 arranged on the shaft sleeve 8, so that the shaft sleeve 8 is positioned and assembled on the left stationary ring 1.
The above description is only an example of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. An inflatable shaft sealing device comprises a left static ring, a right static ring, a sealing gasket and a shaft sleeve, wherein the left static ring is provided with an inner stop groove, and the outer circular wall of the left static ring is provided with an inflatable air inlet; the quiet ring in a left side passes through screw fixed connection with the quiet ring in the right side, sets up sealed pad, characterized by between the fitting surface of quiet ring in a left side and the quiet ring in the right side:
a spigot convex ring is arranged in the middle of the shaft sleeve, a left moving ring is arranged on the left outer circular surface of the shaft sleeve spigot convex ring in a sliding fit manner, a right moving ring is arranged on the right outer circular surface of the shaft sleeve spigot convex ring in a sliding fit manner, a plurality of spring penetrating holes are distributed on the spigot convex ring of the shaft sleeve circumferentially, a spring seat concave hole is arranged on the inner vertical end surface of the left moving ring corresponding to the spring penetrating holes, a spring seat concave hole is arranged on the inner vertical end surface of the right moving ring, a cylindrical compensation spring is arranged in the spring penetrating holes arranged on the shaft sleeve spigot convex ring in a penetrating manner, the left end and the right end of the cylindrical compensation spring are respectively arranged in the spring seat concave hole of the left moving ring and the spring seat concave hole of the right moving ring, and the cylindrical compensation spring exerts pressure on the left moving ring and the right moving ring to enable the left moving ring and the right moving ring to be respectively in contact friction fit with the inner vertical end surfaces of the left stationary ring and the right stationary ring, so as to form end surface sealing;
a driving pin hole is formed in the spigot convex ring of the shaft sleeve, a driving pin concave hole is formed in the inner vertical end face of the left moving ring corresponding to the driving pin hole, a driving pin concave hole is formed in the inner vertical end face of the right moving ring, a driving pin is fixedly installed on the driving pin hole formed in the spigot convex ring of the shaft sleeve, the left end and the right end of the driving pin hole are respectively matched with the driving pin concave hole formed in the left moving ring and the driving pin concave hole formed in the right moving ring, and the left moving ring and the right moving ring are driven to rotate along with the shaft sleeve;
the end part of the outer end of the shaft sleeve is provided with a shaft sleeve positioning clamping groove, the vertical end surface outside the left stationary ring is fixedly connected with a positioning clamping plate through a set screw, and the positioning clamping plate is matched with the shaft sleeve positioning clamping groove arranged on the shaft sleeve to ensure that the shaft sleeve is positioned and assembled on the left stationary ring.
2. The inflatable shaft seal of claim 1 wherein: a sliding sealing ring is arranged between the inner hole of the left rotating ring and the outer circular surface of the shaft sleeve, and a sliding sealing ring is arranged between the inner hole of the right rotating ring and the outer circular surface of the shaft sleeve; and a sealing ring is arranged between the inner hole of the shaft sleeve and the outer circular surface of the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222712788.1U CN218480165U (en) | 2022-10-15 | 2022-10-15 | Inflatable shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222712788.1U CN218480165U (en) | 2022-10-15 | 2022-10-15 | Inflatable shaft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218480165U true CN218480165U (en) | 2023-02-14 |
Family
ID=85170635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222712788.1U Active CN218480165U (en) | 2022-10-15 | 2022-10-15 | Inflatable shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218480165U (en) |
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2022
- 2022-10-15 CN CN202222712788.1U patent/CN218480165U/en active Active
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