CN214662017U - Auxiliary sealing device - Google Patents
Auxiliary sealing device Download PDFInfo
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- CN214662017U CN214662017U CN202120416151.0U CN202120416151U CN214662017U CN 214662017 U CN214662017 U CN 214662017U CN 202120416151 U CN202120416151 U CN 202120416151U CN 214662017 U CN214662017 U CN 214662017U
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- ring
- sealing
- axle sleeve
- sealing ring
- seal
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Abstract
The utility model relates to a mechanical seal technical field, concretely relates to supplementary sealing device, establish the seal receptacle on the axle sleeve including axle sleeve and cover, be equipped with the elastic ring on the axle sleeve outer wall, be equipped with the sealing ring on the inner wall of seal receptacle, the elastic ring is followed the axis direction of axle sleeve supports and leans on the sealing ring. At the axle sleeve rotation in-process, axle sleeve and sealing ring direct contact not, rely on elastic ring and sealing ring butt on the axle sleeve, thereby avoided the axle sleeve to be worn and torn, the axis direction application of force of elastic ring edge axle sleeve, support and form supplementary sealed on the sealing ring, avoid the sealing ring to produce the extrusion to the axle sleeve, this kind of structure is by the radial seal of relative rotation between traditional skeleton oil blanket and the axle sleeve, change the axial compression of sealing ring and elastic ring into and seal, avoid the compression of sealing ring to influence the normal operation of axle sleeve, and also be convenient for adjust the compression volume of sealing ring to the elastic ring, the life of extension elastic ring.
Description
Technical Field
The utility model relates to a mechanical seal technical field, especially an auxiliary sealing device.
Background
The mechanical seal comprises a shaft sleeve, a dynamic seal component arranged on the shaft sleeve, a seal seat and a static seal component arranged on the seal seat, wherein the dynamic seal component is abutted against the static seal component, a seal cavity is formed on the shaft sleeve, and because the dynamic seal component and the static seal component rotate relatively, a large amount of heat can be generated between the static seal component and the dynamic seal component due to friction, in order to prevent the temperature of a seal surface from being overhigh, an outer flushing water inlet communicated with the seal cavity is usually arranged on the seal seat, one side of the seal cavity close to the outside of equipment is sealed through auxiliary seal, and the leakage of cooling water for cooling the seal surface is avoided.
As shown in fig. 1, the schematic diagram of the existing auxiliary sealing structure includes a framework oil seal 3 disposed between a sealing seat 2 and a shaft sleeve 1, the framework oil seal 3 is relatively fixed to the sealing seat 2, and due to the relative movement between the shaft sleeve 1 and the sealing seat 2, the shaft sleeve 1 is easily worn and torn under the long-term friction between the framework oil seal 3 and the shaft sleeve 1, so that the auxiliary sealing is disabled, and water leakage occurs.
Therefore, a technical scheme is needed at present to solve the technical problem that the abrasion of the shaft sleeve is easy to occur in the long-term friction process of the framework oil seal for sealing the sealing cavity and the shaft sleeve, so that the sealing failure of the framework oil seal to cooling water in the sealing cavity is caused.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: the auxiliary sealing device is used for sealing a framework oil seal of a sealing cavity in the prior art, and the shaft sleeve is easy to wear in the long-term friction process of the shaft sleeve, so that the technical problem that the framework oil seal fails to seal cooling water in the sealing cavity is solved.
In order to realize the purpose, the utility model discloses a technical scheme be:
the utility model provides an auxiliary sealing device, includes that axle sleeve and cover establish the seal receptacle on the axle sleeve, be equipped with the elastic ring on the axle sleeve outer wall, be equipped with the sealing ring on the inner wall of seal receptacle, the elastic ring is followed the axis direction of axle sleeve supports and leans on the sealing ring.
The utility model relates to an auxiliary sealing device, the elastic ring is sleeved on the shaft sleeve, the sealing ring is arranged on the inner wall of the sealing seat, the elastic ring applies force to the sealing ring along the axis direction of the shaft sleeve and is propped against the sealing ring, so that the sealing ring and the elastic ring form the auxiliary sealing of a sealing cavity, and the leakage of cooling water is avoided;
furthermore, in the rotation process of the shaft sleeve, the shaft sleeve is not directly contacted with the sealing ring, and the elastic ring on the shaft sleeve is abutted against the sealing ring, so that the shaft sleeve is prevented from being abraded;
further, the elastic ring supports and forms auxiliary seal along the axis direction application of force of axle sleeve, avoids the sealing ring to produce the extrusion to the axle sleeve, and this kind of structure is by the radial seal of relative rotation between traditional skeleton oil blanket and the axle sleeve, changes the axial compression of sealing ring and elastic ring into and seals, avoids the compression of sealing ring to influence the normal operation of axle sleeve, and the adjustment sealing ring of also being convenient for moreover is to the compression capacity of elastic ring, prolongs the life of elastic ring.
As the preferred scheme of the utility model, the sealing ring with the detachable connection of seal receptacle. The sealing ring rubs with the elastic ring for a long time, and when the sealing ring is worn and torn, the sealing ring needs to be replaced or maintained, and the sealing ring is installed on the sealing seat in a detachable mode, so that the sealing ring can be replaced conveniently.
As the utility model discloses a preferred scheme, be equipped with the mounting groove that is used for installing the sealing ring on the inner wall of seal receptacle, the mounting groove runs through the tip of seal receptacle. The sealing ring is clamped into the mounting groove from the end face of the sealing seat, and detachable connection of the sealing ring and the sealing seat is achieved.
As the utility model discloses an optimal scheme, be equipped with spacing draw-in groove on the mounting groove, be equipped with the rand in the spacing draw-in groove, the rand be used for with the sealing ring restriction is in the mounting groove. Make the position of sealing ring in the mounting groove more stable, avoid making the sealing ring take place to slide because of the rotation of axle sleeve, also can adjust the compression capacity of sealing ring to the elastic ring through the thickness of adjusting the rand simultaneously.
As the utility model discloses an optimal scheme, be equipped with the elasticity sealing washer on the mounting groove, the setting of elasticity sealing washer is in the sealing ring with between the seal receptacle. The gap between the sealing ring and the sealing seat is sealed, the cooling water is prevented from leaking, and the sealing performance of the auxiliary seal is improved.
As the utility model discloses a preferred scheme, be equipped with the compression groove on the axle sleeve outer wall, the elastic ring sets up in the compression groove. When the sealing ring compresses the elastic ring, the compression groove plays a role in limiting the elastic ring, and the elastic ring is prevented from sliding after being compressed.
As the preferred scheme of the utility model, the elastic ring sets up to the VD sealing washer. The VD sealing ring is formed by thickening the lip on one side of the V-shaped sealing ring and is suitable for being used as the dynamic seal of a rotating shaft, so that the elasticity can be automatically compensated after being abraded, and the sealing effect is ensured.
As the preferred proposal of the utility model, the elastic ring is a butadiene acrylonitrile rubber structural member. The butadiene acrylonitrile rubber is a copolymer formed by polymerizing acrylonitrile and butadiene monomers, and has the advantages of excellent oil resistance, higher wear resistance, better heat resistance and strong bonding force.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the shaft sleeve is not directly contacted with the sealing ring, and the elastic ring on the shaft sleeve is abutted against the sealing ring to form sealing for the sealing cavity, so that the shaft sleeve is prevented from being abraded;
2. the elastic ring is supported and supported to form auxiliary sealing on the sealing ring along the axial direction force application of the shaft sleeve, the sealing ring is prevented from extruding the shaft sleeve, the structure is formed by radial sealing of relative rotation between a traditional framework oil seal and the shaft sleeve, the axial compression sealing of the sealing ring and the elastic ring is changed into the axial compression sealing, the normal operation of the shaft sleeve is prevented from being influenced by the compression of the sealing ring, the compression amount of the sealing ring to the elastic ring is convenient to adjust, and the service life of the elastic ring is prolonged.
Drawings
FIG. 1 is a schematic view of a prior art secondary seal structure;
fig. 2 is a schematic structural view of an auxiliary sealing device according to the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
the labels in the figure are: 1-shaft sleeve, 11-sealing cavity, 12-compression groove, 2-sealing seat, 21-external flushing water inlet, 22-mounting groove, 221-limiting clamping groove, 3-framework oil seal, 4-sealing ring, 5-elastic ring, 6-clamping ring and 7-elastic sealing ring.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
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 for purposes of illustration only and are not intended to limit the invention.
Example 1
As shown in fig. 2 and fig. 3, this embodiment is an auxiliary sealing device, establish seal receptacle 2 on axle sleeve 1 including axle sleeve 1 and cover, be equipped with elastic ring 5 on the axle sleeve 1 outer wall, be equipped with sealing ring 4 on the inner wall of seal receptacle 2, elastic ring 5 is followed axle sleeve 1's axis direction supports and leans on sealing ring 4, wherein elastic ring 5 is butadiene acrylonitrile rubber material structure, and butadiene acrylonitrile rubber is the copolymer that is formed by acrylonitrile and butadiene monomer polymerization, and oil resistance is fabulous, and the wearability is higher, and the heat resistance is better, and elastic ring 5 can seal the clearance between sealing ring 4 and the axle sleeve 1 after receiving the compression.
An elastic ring 5 is sleeved on the shaft sleeve 1, a sealing ring 4 is arranged on the inner wall of the sealing seat 2, the elastic ring 5 applies force to the sealing ring 4 along the axial direction of the shaft sleeve 1 and abuts against the sealing ring 4, so that the sealing ring 4 and the elastic ring 5 form auxiliary sealing of a sealing cavity 11, and cooling water leakage is avoided;
in the rotation process of the shaft sleeve 1, the shaft sleeve 1 is not directly contacted with the sealing ring 4, and the elastic ring 5 on the shaft sleeve 1 is abutted against the sealing ring 4, so that the shaft sleeve 1 is prevented from being abraded;
elastic ring 5 is along the axis direction application of force of axle sleeve 1, support and form supplementary sealed on sealing ring 4, avoid sealing ring 4 to produce the extrusion to axle sleeve 1, this kind of structure is by the radial seal of relative rotation between traditional skeleton oil blanket 3 and the axle sleeve 1, change sealing ring 4 and elastic ring 5's axial compression seal into, the normal operation of avoiding sealing ring 4's compression to influence axle sleeve 1, and also be convenient for adjust the compression volume of sealing ring 4 to elastic ring 5, the life of extension elastic ring 5, reduce elastic ring 5's the maintenance number of times.
Specifically, the sealing ring 4 is detachably connected with the sealing seat 2, the sealing ring 4 and the elastic ring 5 rub for a long time, when the sealing ring 4 is worn and needs to be replaced or maintained, the sealing ring 4 is detachably mounted on the sealing seat 2, and replacement of the sealing ring 4 is facilitated; more specifically, be equipped with the mounting groove 22 that is used for installing sealing ring 4 on the inner wall of seal receptacle 2, mounting groove 22 runs through the tip of seal receptacle 2, sealing ring 4 is gone into to the mounting groove 22 from the terminal surface card of seal receptacle 2, realizes that sealing ring and seal receptacle 2's detachable is connected.
Further, be equipped with spacing draw-in groove 221 on the mounting groove 22, be equipped with rand 6 in the spacing draw-in groove 221, rand 6 be used for with sealing ring 4 restricts in the mounting groove 22 for the position of sealing ring 4 in mounting groove 22 is more stable, avoids making sealing ring 4 take place to slide because of the rotation of axle sleeve 1, also can adjust the compression capacity of sealing ring 4 to elastic ring 5 through the thickness of adjusting rand 6 simultaneously.
Furthermore, be equipped with elastic seal circle 7 on the mounting groove 22, elastic seal circle 7 sets up sealing ring 4 with between the seal receptacle 2 for the clearance between sealing ring 4 and the seal receptacle 2 is sealed, avoids the cooling water to take place to leak, improves supplementary sealed sealing performance.
Example 2
As shown in fig. 3, in the present embodiment, the difference from embodiment 1 is that a compression groove 12 is provided on an outer wall of the shaft sleeve 1, and the elastic ring 5 is disposed in the compression groove 12, so that when the sealing ring 4 compresses the elastic ring 5, the compression groove 12 performs a limiting function on the elastic ring 5, and the elastic ring 5 is prevented from sliding after being compressed.
Example 3
As shown in fig. 3, the present embodiment is different from embodiment 1 in that the elastic ring 5 is a VD seal ring, and a lip portion on one side of the V-shaped seal ring is thickened to form the VD seal ring, and the VD seal ring is suitable for dynamic sealing of a rotating shaft, so that elasticity can be automatically compensated after being worn, and effective sealing is ensured.
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 (8)
1. The utility model provides an auxiliary sealing device, establishes seal receptacle (2) on axle sleeve (1) including axle sleeve (1) and cover, its characterized in that, be equipped with elastic ring (5) on axle sleeve (1) outer wall, be equipped with sealing ring (4) on the inner wall of seal receptacle (2), elastic ring (5) are followed the axis direction of axle sleeve (1) supports and leans on sealing ring (4).
2. The auxiliary sealing device according to claim 1, characterized in that the sealing ring (4) is detachably connected to the sealing seat (2).
3. The auxiliary sealing device according to claim 2, characterized in that the inner wall of the sealing seat (2) is provided with a mounting groove (22) for mounting the sealing ring (4), and the mounting groove (22) penetrates through the end of the sealing seat (2).
4. The auxiliary sealing device according to claim 3, wherein a limiting clamping groove (221) is arranged on the mounting groove (22), a clamping ring (6) is arranged in the limiting clamping groove (221), and the clamping ring (6) is used for limiting the sealing ring (4) in the mounting groove (22).
5. A secondary sealing arrangement according to claim 3, characterised in that an elastic sealing ring (7) is provided on the mounting groove (22), the elastic sealing ring (7) being arranged between the sealing ring (4) and the sealing seat (2).
6. Auxiliary sealing device according to any of claims 1 to 5, characterized in that the outer wall of the shaft sleeve (1) is provided with a compression groove (12), and the elastic ring (5) is arranged in the compression groove (12).
7. A supplementary seal according to any of claims 1-5, wherein the elastic ring (5) is provided as a VD-ring seal.
8. An auxiliary sealing device according to any one of claims 1-5, characterised in that the elastic ring (5) is a structural member of nitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120416151.0U CN214662017U (en) | 2021-02-25 | 2021-02-25 | Auxiliary sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120416151.0U CN214662017U (en) | 2021-02-25 | 2021-02-25 | Auxiliary sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214662017U true CN214662017U (en) | 2021-11-09 |
Family
ID=78449063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120416151.0U Active CN214662017U (en) | 2021-02-25 | 2021-02-25 | Auxiliary sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214662017U (en) |
-
2021
- 2021-02-25 CN CN202120416151.0U patent/CN214662017U/en active Active
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