CN207906447U - A kind of rotary sealing appts of mechanical sealing - Google Patents
A kind of rotary sealing appts of mechanical sealing Download PDFInfo
- Publication number
- CN207906447U CN207906447U CN201820014964.5U CN201820014964U CN207906447U CN 207906447 U CN207906447 U CN 207906447U CN 201820014964 U CN201820014964 U CN 201820014964U CN 207906447 U CN207906447 U CN 207906447U
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- Prior art keywords
- hollow shaft
- shell
- sealing
- bearing
- rotary
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Abstract
The utility model is related to a kind of rotary sealing appts of mechanical sealing,Including shell,The hollow shaft being rotatably provided in shell,The bearing assembly being arranged between shell and hollow shaft and the sealing mechanism for realizing dynamic sealing to hollow shaft,Medium channel is equipped in shell,The bearing assembly includes the first bearing for the inner end for being set in the hollow shaft and is set in the second bearing of the outer end of the hollow shaft,The sealing mechanism is arranged between first bearing and second bearing,Sealing mechanism includes the first stationary seal ring being inlaid in the shell,The first rotary packing ring for being sleeved in the hollow shaft and coordinating with the first stationary seal ring,The second stationary seal ring being installed in the shell and the second rotary packing ring for being sleeved in the hollow shaft and coordinating with the second stationary seal ring,Elastic compensation element is equipped between first rotary packing ring and the second rotary packing ring.The utility model has the advantages that sealing effect is good, with long service life.
Description
Technical field
The utility model is related to a kind of rotary sealing appts of mechanical sealing.
Background technology
Due to the limitation of the existing processing technology of many equipment currently on the market, make its concentricity that can not reach expected
Like that, there are larger swings when most of equipment operations.For under this operating mode, the service life of conventional plane rotary joint
It is all shorter, it generally began to reveal using 1 to 3 month so that whole maintenance cost is high.The longevity is used like this
Order it is of short duration cause equipment frequently to be shut down, greatly reduce production efficiency and increase production cost.Cause the master of such phenomenon
It is exactly that equipment is swung greatly to want reason, and for flat seal rotating device when swinging, sealing surface will appear of short duration disengaging.It is conventional
Plane Rotation connection supports are using the unilateral supporting form of ball bearing, and when equipment swing is larger, sealing surface is easy to out
Now disengage phenomenon：Single sealing structure form that conventional plane rotary joint uses, sealing performance are relatively low；Traditional Plane Rotation connects
Head spring is chronically in medium, and spring force can be influenced by the various factors of medium, cause sealing performance unstable.
In consideration of it, the present inventor carries out in-depth study to the above problem, there is this case generation then.
Utility model content
The purpose of this utility model is to provide a kind of concentricity that can ensure rotary joint and stability, Neng Gouti
Rise the rotary sealing appts of the mechanical sealing of sealing performance and service life.
In order to achieve the above object, the utility model uses such technical solution：
A kind of rotary sealing appts of mechanical sealing, including shell, be rotatably provided in shell hollow shaft, set
The bearing assembly between shell and hollow shaft and the sealing mechanism for realizing dynamic sealing to hollow shaft are set, is equipped in shell
Medium channel, the bearing assembly include the first bearing for the inner end for being set in the hollow shaft and are set in the hollow shaft
The second bearing of outer end, the sealing mechanism are arranged between first bearing and second bearing, and sealing mechanism includes being inlaid in institute
State the first stationary seal ring in shell, the first rotary packing ring for being sleeved in the hollow shaft and coordinating with the first stationary seal ring,
The second stationary seal ring being installed in the shell and be sleeved in the hollow shaft and coordinate with the second stationary seal ring
Two rotary packing rings are equipped with elastic compensation element between the first rotary packing ring and the second rotary packing ring.
As a kind of preferred embodiment of the utility model, it is equipped between the inner wall of the shell and the outer wall of the hollow shaft
Seal block, seal block are equipped with accommodating groove, and second stationary seal ring is embedded in accommodating groove, in the inner wall of the shell
It is equipped with the first circlip for hole for limiting seal block axial movement.
The first limit cushion cap is equipped with as a kind of preferred embodiment of the utility model, in the shell, in the hollow shaft
Equipped with the second limit cushion cap, it is equipped with the second circlip for hole in the inner wall of the shell, axis is equipped in the hollow shaft and is used
Circlip, the one end of the second bearing in an axial direction are resisted against on the first limit cushion cap and the second limit cushion cap, and described second
The other end of bearing in an axial direction is resisted against on the second circlip for hole and circlip for shaft.
As a kind of preferred embodiment of the utility model, the first bearing is oilless bearing.
As a kind of preferred embodiment of the utility model, the shell is equipped with the first rubber base, first static seal
Ring is embedded in the first rubber base, and the seal block is equipped with the second rubber base, and second stationary seal ring is inlaid in second
In rubber base.
As a kind of preferred embodiment of the utility model, the elastic compensation element includes being set in the hollow shaft
It third rubber base, the 4th rubber base being set in the hollow shaft and supports between third rubber base and the 4th rubber base
Spring, first rotary packing ring is inlaid in third rubber base, and second rotary packing ring is inlaid in the 4th rubber base.
After the technical solution of the utility model, the first stationary seal ring and the first rotary packing ring form first of sealing,
Second sealing is formed between second stationary seal ring and the second rotary packing ring, by two seals, substantially increases rotary joint
Sealing performance and service life, the utility model by first bearing and second bearing to being supported before and after hollow shaft,
Supporting way branch tie distance maximizes, and larger particles impurity can be effectively prevent to enter sealing surface, preferably protect sealing station, made
Sealing position by extraneous swing influenced to be preferably minimized.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the enlarged drawing at A in Fig. 1；
In figure：
10- shell 11- end caps
12- medium channel 13- metal gaskets
21- first bearing 22- second bearings
23- the second circlip for hole 24- circlip for shaft
25- first limits cushion cap 25- second and limits cushion cap
30- hollow shaft 40- seal blocks
41- the first circlip for hole 42- elastic seal rings
51- the first stationary seal ring the first rotary packing rings of 52-
53- the second stationary seal ring the second rotary packing rings of 54-
55- the first rubber base the second rubber bases of 56-
The 4th rubber bases of 57- third rubber bases 58-
59- springs
Specific implementation mode
In order to which the technical solution of the utility model is explained further, it is described in detail below in conjunction with the accompanying drawings.
Referring to figs. 1 to Fig. 2, a kind of rotary sealing appts of mechanical sealing, including shell 10, it is rotatably provided in shell
Hollow shaft 30 in body 10, the bearing assembly being arranged between shell 10 and hollow shaft 30 and dynamic for being realized to hollow shaft 30
The sealing mechanism of sealing, shell 10 is interior to be equipped with medium channel 12, and one end on the housing 10 far from hollow shaft 30 is equipped with end cap 11,
End cap 11 is locked in by bolt on shell 10, metal gasket 13 is arranged between end cap 11 and shell 10, with hexagon socket head cap screw pressure
Tight formed is tightly connected.
In the utility model, the bearing assembly includes being set in the inner end of the hollow shaft 30 (by the one of proximal cover 11
End) first bearing 21 and be set in the hollow shaft 30 outer end second bearing 22, it is preferable that the first bearing 21 is
Oilless bearing.
The utility model, the sealing mechanism are arranged between first bearing 21 and second bearing 22, and sealing mechanism includes
The first stationary seal ring 51 for being inlaid in the shell 10 is sleeved in the hollow shaft 30 and coordinates with the first stationary seal ring 51
The first rotary packing ring 52, the second stationary seal ring 53 for being installed in the shell 10 and be sleeved in the hollow shaft 30 and
With the second rotary packing ring 54 of the second stationary seal ring 53 cooperation, bullet is equipped between the first rotary packing ring 52 and the second rotary packing ring 54
Property compensating element,.
As a kind of preferred embodiment of the utility model, between the inner wall of the shell 10 and the outer wall of the hollow shaft 30
Equipped with seal block 40, seal block 40 is equipped with accommodating groove, and second stationary seal ring 53 is embedded in accommodating groove, described
The inner wall of shell 10 is equipped with the first circlip for hole 41 for limiting the axial movement of seal block 40.Seal block 40 is logical
It crosses elastic seal ring 42 to be sealed with shell 10, the first circlip for hole 41 is for limiting seal block 40 towards second bearing
22 axial movements, while there is slight controllability again so that sealing surface can be always maintained at fit-state when swinging.
As a kind of preferred embodiment of the utility model, the first limit cushion cap 25 is equipped in the shell 10, it is described hollow
Axis 30 is equipped with the second limit cushion cap 26, the second circlip for hole 23 is equipped in the inner wall of the shell 10, described hollow
Axis 30 is equipped with circlip for shaft 24, and the one end of the second bearing 22 in an axial direction is resisted against the first limit cushion cap 25 and second
It limits on cushion cap 26, the other end of the second bearing 22 in an axial direction is resisted against the second circlip for hole 23 and axis elasticity gear
On circle 24.
As a kind of preferred embodiment of the utility model, the first rubber base 55 is installed on the shell 10, described first
Stationary seal ring 51 is embedded in the first rubber base 55, and the second rubber base 56 is equipped on the seal block 40, and described second is quiet
Sealing ring 54 is inlaid in the second rubber base 56.
As a kind of preferred embodiment of the utility model, the elastic compensation element includes being set in the hollow shaft 30
Third rubber base 57, the 4th rubber base 58 that is set in the hollow shaft 30 and support in third rubber base 57 and the 4th
Spring 59 between rubber base 58, first rotary packing ring 52 are inlaid in third rubber base 57, second rotary packing ring
54 are inlaid in the 4th rubber base 58.
In the utility model, it is sealed into for first：First stationary seal ring 51 is embedded on shell 10 through the first static seal
The inner wall of the first rubber base 55 and shell 10 outside ring 51 forms a static seal point, and then the first rotary packing ring 52 passes through
The outer circle of the third rubber base 57 of inner wall and hollow shaft 30 forms static seal, 52 seal face of the first rotary packing ring and first quiet close
The end face of seal ring 51 provides elastic force by elastic compensation element and forms one of dynamic sealing.
Second is sealed into：Second stationary seal ring 53 is embedded on seal block 40, outside the second stationary seal ring 53
The second rubber base 56 and the inner wall of shell 10 form a static seal point, seal block 40 passes through elastic seal ring 42 and shell
10 form a static seal point, and then the second rotary packing ring 54 is formed by the 4th rubber base 58 and 10 outer circle of hollow shaft of inner wall
The end face of static seal, the seal face of the second rotary packing ring 54 and the second stationary seal ring 53 provides elastic force by elastic compensation element
Form one of dynamic sealing.Using the design of two seals, when first of seal failure, second can also continue to seal.
Preferably, radiating groove is dug in the outer surface of shell, increases the heat dissipation contact area with the external world, and sealing surface friction is made to generate
Heat more effectively distribute, improve the service life of mechanical sealing member.
The product form of the utility model is not limited to this case diagram and embodiment, anyone carries out it similar thinking
Appropriate changes or modifications all should be regarded as the patent category for not departing from the utility model.
Claims (6)
1. a kind of rotary sealing appts of mechanical sealing, including shell, the hollow shaft being rotatably provided in shell, setting
Bearing assembly between shell and hollow shaft and the sealing mechanism for realizing dynamic sealing to hollow shaft, interior be equipped with of shell are situated between
Matter channel, it is characterised in that：The bearing assembly includes the first bearing for the inner end for being set in the hollow shaft and is set in institute
The second bearing of the outer end of hollow shaft is stated, the sealing mechanism is arranged between first bearing and second bearing, sealing mechanism packet
First for including the first stationary seal ring being inlaid in the shell, being sleeved in the hollow shaft and coordinating with the first stationary seal ring
Rotary packing ring, the second stationary seal ring being installed in the shell and be sleeved in the hollow shaft and with the second stationary seal ring
Second rotary packing ring of cooperation is equipped with elastic compensation element between the first rotary packing ring and the second rotary packing ring.
2. a kind of rotary sealing appts of mechanical sealing as described in claim 1, it is characterised in that：The shell it is interior
Seal block is equipped between wall and the outer wall of the hollow shaft, seal block is equipped with accommodating groove, and second stationary seal ring is embedding
It is located in accommodating groove, the first hole elasticity gear for limiting seal block axial movement is equipped on the inner wall of the shell
Circle.
3. a kind of rotary sealing appts of mechanical sealing as claimed in claim 2, it is characterised in that：It is set in the shell
There are the first limit cushion cap, the hollow shaft to be equipped with the second limit cushion cap, the second hole elasticity is equipped in the inner wall of the shell
Baffle ring is equipped with circlip for shaft in the hollow shaft, and the one end of the second bearing in an axial direction is resisted against the first limit and holds
On platform and the second limit cushion cap, the other end of the second bearing in an axial direction is resisted against the second circlip for hole and axis elasticity
On baffle ring.
4. a kind of rotary sealing appts of mechanical sealing as claimed in claim 3, it is characterised in that：The first bearing
For oilless bearing.
5. a kind of rotary sealing appts of mechanical sealing as claimed in claim 4, it is characterised in that：It is set on the shell
There are the first rubber base, first stationary seal ring to be embedded in the first rubber base, the seal block is equipped with the second rubber base,
Second stationary seal ring is inlaid in the second rubber base.
6. a kind of rotary sealing appts of mechanical sealing as claimed in claim 5, it is characterised in that：The elastic compensating
Element includes the third rubber base being set in the hollow shaft, the 4th rubber base being set in the hollow shaft and supports
Spring between third rubber base and the 4th rubber base, first rotary packing ring are inlaid in third rubber base, and described
Two rotary packing rings are inlaid in the 4th rubber base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820014964.5U CN207906447U (en) | 2018-01-04 | 2018-01-04 | A kind of rotary sealing appts of mechanical sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820014964.5U CN207906447U (en) | 2018-01-04 | 2018-01-04 | A kind of rotary sealing appts of mechanical sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207906447U true CN207906447U (en) | 2018-09-25 |
Family
ID=63566644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820014964.5U Active CN207906447U (en) | 2018-01-04 | 2018-01-04 | A kind of rotary sealing appts of mechanical sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207906447U (en) |
-
2018
- 2018-01-04 CN CN201820014964.5U patent/CN207906447U/en active Active
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