CN201461952U - Internal labyrinth cavity gap type sealing structure - Google Patents
Internal labyrinth cavity gap type sealing structure Download PDFInfo
- Publication number
- CN201461952U CN201461952U CN200920097729XU CN200920097729U CN201461952U CN 201461952 U CN201461952 U CN 201461952U CN 200920097729X U CN200920097729X U CN 200920097729XU CN 200920097729 U CN200920097729 U CN 200920097729U CN 201461952 U CN201461952 U CN 201461952U
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- CN
- China
- Prior art keywords
- seal ring
- sealing ring
- annular grooves
- annular
- inner seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses an internal labyrinth cavity gap type sealing structure, which is formed by an inner sealing ring and an outer sealing ring. The outer sealing ring is provided with a cylindrical shaft bracket, wherein holes are arranged in the cylindrical shaft bracket. The inner sealing ring is provided with a cylindrical shaft sleeve, wherein holes are arranged in the cylindrical shaft sleeve. A plurality of annular grooves are arranged on the side end surface of the outer sealing ring. An annular columnar body is sheathed on the shaft sleeve of the inner sealing ring, wherein a plurality of annular grooves are arranged in the annular columnar body. Annular walls between the plurality of annular grooves on the inner sealing ring and the outer sealing ring respectively stretch into the annular grooves on the outer sealing ring and the annular grooves on the inner sealing ring. An oil storage chamber is arranged among the annular grooves close to the shaft sleeve of the inner sealing ring, the shaft sleeve of the inner sealing ring, and the end surface with annular grooves of the outer sealing ring. Since the radial sealing dimension is controlled within the maximum dimension range of the bearing, the defect that the existing sealing dimension is large is solved.
Description
Technical field
The utility model relates to a kind of sealing configuration, and the utility model relates in particular to a kind of built-in labyrinth lacuna formula sealing configuration.
Background technique
At present, known seal construction has two kinds, and the one, twinset, advantage is that number of components is few, cost is low.Chinese patent 200520030213.5 discloses a kind of three bend lacuna formula sealing configurations, the sealing structure is made of inner seal ring and exterior seal ring, exterior seal ring has the pedestal that can be located on the bearing support, inner seal ring has axle sleeve, and exterior seal ring has at least one central column cavity and interior central column projection, outer shroud columnar protrusions; Inner seal ring has at least two corresponding central column projection and annular cavity arranged side by side; Having the cross section between exterior seal ring and the inner seal ring is class " ε " shape three bend lacuna formula sealing configurations, has accumulator between central column projection, exterior seal ring and the axle sleeve of inner seal ring.The projection of exterior seal ring and cavity closely cooperate with the cavity and the projection of corresponding inner seal ring in this structure, effectively anti-sealing and dust enter Idler bearing inside, improved the working life of carrying roller, but shortcoming is the restriction that is subjected to the supporting rear space of size of Idler bearing model and pipe diameter, and application area is narrow.
At present, known another kind of seal construction is five covers, and advantage is the restriction that is not subjected to the supporting rear space of size of Idler bearing model and pipe diameter, and shortcoming is that number of components is many, the cost height, and the rotational resistance that carrying roller is rotated increases.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of prior art, provides a kind of number of components few, and cost is low, is not subjected to the restriction of the supporting rear space of size of Idler bearing model and pipe diameter again, the built-in labyrinth lacuna formula sealing configuration that rotational resistance is little.
In order to achieve the above object, the technical solution adopted in the utility model is:
Built-in labyrinth of the present utility model lacuna formula sealing configuration, it is made of inner seal ring and exterior seal ring, exterior seal ring has the cylindrical pedestal that has the hole in it, inner seal ring has the cylinder-shaped sleeve that has the hole in it, on a side end face of described exterior seal ring, have a plurality of annular grooves, on the axle sleeve of described inner seal ring, be with the central column body that has a plurality of annular grooves in it; That ring wall between a plurality of annular grooves on the described inside and outside seal ring extend into respectively is outer, in the annular groove on the inner seal ring, described inner seal ring has near annular groove, axle sleeve, the exterior seal ring of its axle sleeve between the end face of annular groove and has accumulator.
Advantage of the present utility model is:
This structure has adopted the minimum number-two of untouchable sealing usage quantity, is made of two of inside and outside sealings, and Sealing quantity drops to minimum, has reduced cost of production; Interior external sealed adopts contactless structure, and not contact has reduced surface friction drag between the sealing, has reduced the loss of electric power, realizes purpose of energy saving; External sealed radially overall dimensions equals supporting bearing diameter, has realized using the place of bearing just can use sealing, realizes the purpose of no usage space restriction; Bend adopts ε type structure, the sudden change between bend on the no size, and be full of lithium grease between inside and outside sealing, realize purpose dustproof, waterproof.Sealing road length is increased to 40mm-70mm by traditional 13mm, and the sealing radial dimension is controlled within the overall dimensions scope of bearing, thereby realizes solving the existing big drawback of closure size.
Description of drawings
Fig. 1 is the ssembly drawing of built-in labyrinth of the present utility model lacuna formula sealing configuration;
Fig. 2 is the inner seal structure schematic representation in the sealing configuration shown in Figure 1;
Fig. 3 is the outer seal configuration schematic representation in the sealing configuration shown in Figure 1.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in detail.
Of the present utility model built-in labyrinth lacuna formula sealing configuration as Figure 1-3, it is made of inner seal ring 1 and exterior seal ring 2, exterior seal ring 2 has the cylindrical pedestal 9 that has the hole in it, inner seal ring 1 has the cylinder-shaped sleeve 8 that has the hole in it, on a side end face of described exterior seal ring 2, have a plurality of annular grooves 6, on the axle sleeve 8 of described inner seal ring 1, be with the central column body that has a plurality of annular grooves 4 in it; In the annular groove 4,6 outside ring wall 3,5 between a plurality of annular grooves on the described inside and outside seal ring 1,2 extend into respectively, on the inner seal ring, described inner seal ring 1 has near annular groove, axle sleeve, the exterior seal ring of its axle sleeve between the end face of annular groove and has accumulator 7, and described external sealed radially overall dimensions equals supporting bearing diameter.Seal radially overall dimensions in preferred than the external sealed little 0.5mm-1mm of overall dimensions radially, rotate the friction of sealing and bearing support in can not causing like this.
Sealing in the assembling back, external sealed are concentric structure.Interior sealing 1 assembling running back and support roller shaft are synchronous.External sealed 2 leans against on the side end face of outer ring of bearing, the outer peripheral surface of its pedestal 9 and bearing support interference fit, and the running back is synchronous with the carrying roller pipe.
Claims (2)
1. built-in labyrinth lacuna formula sealing configuration, it is made of inner seal ring and exterior seal ring, exterior seal ring has the cylindrical pedestal that has the hole in it, inner seal ring has the cylinder-shaped sleeve that has the hole in it, on the axle sleeve of described inner seal ring, be with the central column body that has a plurality of annular grooves in it, it is characterized in that: on a side end face of described exterior seal ring, have a plurality of annular grooves, in described, outside ring wall between a plurality of annular grooves on the exterior seal ring extend into respectively, in the annular groove on the inner seal ring, described inner seal ring is near the annular groove of its axle sleeve, axle sleeve, exterior seal ring has between the end face of annular groove and has accumulator.
2. built-in labyrinth according to claim 1 lacuna formula sealing configuration is characterized in that: described inner seal ring radially overall dimensions than the external sealed little 0.5mm--1mm of overall dimensions radially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920097729XU CN201461952U (en) | 2009-07-10 | 2009-07-10 | Internal labyrinth cavity gap type sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920097729XU CN201461952U (en) | 2009-07-10 | 2009-07-10 | Internal labyrinth cavity gap type sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201461952U true CN201461952U (en) | 2010-05-12 |
Family
ID=42389305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920097729XU Expired - Lifetime CN201461952U (en) | 2009-07-10 | 2009-07-10 | Internal labyrinth cavity gap type sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201461952U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491064A (en) * | 2011-12-02 | 2012-06-13 | 天津三岛科技发展有限公司 | Double-oil-storage-chamber water-drainage type seal |
| CN105568821A (en) * | 2015-12-16 | 2016-05-11 | 湖南三一路面机械有限公司 | Staggered butting interface device and asphalt mixing plant |
| CN105970560A (en) * | 2016-06-30 | 2016-09-28 | 无锡小天鹅股份有限公司 | Seal ring and detergent putting assembly and roller washing machine with same |
-
2009
- 2009-07-10 CN CN200920097729XU patent/CN201461952U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491064A (en) * | 2011-12-02 | 2012-06-13 | 天津三岛科技发展有限公司 | Double-oil-storage-chamber water-drainage type seal |
| CN105568821A (en) * | 2015-12-16 | 2016-05-11 | 湖南三一路面机械有限公司 | Staggered butting interface device and asphalt mixing plant |
| CN105568821B (en) * | 2015-12-16 | 2018-09-18 | 湖南三一路面机械有限公司 | A kind of interface arrangement and bituminous mixing plant of staggeredly docking |
| CN105970560A (en) * | 2016-06-30 | 2016-09-28 | 无锡小天鹅股份有限公司 | Seal ring and detergent putting assembly and roller washing machine with same |
| CN105970560B (en) * | 2016-06-30 | 2018-06-19 | 无锡小天鹅股份有限公司 | Sealing ring, washing launch component and with its roller washing machines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |
|
| CX01 | Expiry of patent term |