CN208686644U - A kind of precompressed lost-proof mechanical sealing device of silicon carbide - Google Patents
A kind of precompressed lost-proof mechanical sealing device of silicon carbide Download PDFInfo
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- CN208686644U CN208686644U CN201821225049.7U CN201821225049U CN208686644U CN 208686644 U CN208686644 U CN 208686644U CN 201821225049 U CN201821225049 U CN 201821225049U CN 208686644 U CN208686644 U CN 208686644U
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- ring
- rotating
- rotating seat
- wall
- rotating ring
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Abstract
The utility model discloses a kind of precompressed lost-proof mechanical sealing device of silicon carbide, including covering rotating ring on pump shaft and rotating seat, more springs and being connect with the pump housing and cover the stationary ring outside pump shaft；The inner wall of the rotating seat and the outer wall of pump shaft seal, and one end of the rotating ring is embedded in the stepped hole of rotating seat and the step surface of one end of rotating ring and rotating seat is equipped with circumferential position limiting structure；The rotating ring and rotating seat are equipped with axial sliding clearance；One end of the spring is embedded in the first mounting hole of the step surface of rotating seat, and one end end face of the other end and rotating ring offsets；It is located between the outer wall in rotating seat and the inner wall of rotating seat on the rotating ring and seals.The mechanically-sealing apparatus make rotating ring and rotating seat circumferential direction good limit effect, avoid spring exposure in the medium, can be reduced using spring base.
Description
Technical field:
The utility model relates to technical field of mechanical, specially a kind of precompressed lost-proof silicon carbide mechanical seal dress
It sets.
Background technique:
There is a mechanical sealing device of silicon carbide at present, links including the spring base being socketed on axis and spring base dynamic
Ring seat, stationary seal ring, moving sealing ring, spring and gasket, the moving sealing ring and rotating seat close-fitting seal, the moving sealing ring
It is tightly attached on stationary seal ring, the spring base and axis rotate synchronously, and it is dynamic that driving has been additionally provided between the spring base and rotating seat
The shifting fork device of ring seat effect.The spring base refers to axis synchronous rotation, passes through holding screw between the spring base and axis
Tightening sealing.The shifting fork device refers to that the rotating seat is equipped with shift fork, and the spring base is equipped with to be embedded in for the shift fork
Slot.The mechanical sealing device of silicon carbide of the above this structure, which has the disadvantage in that, passes through interference between 1, rotating ring and rotating seat
Cooperation is fixed, and is lacked effective circumferential connection structure, is caused circumferential limit effect bad；2, spring exposes in the medium, medium
In impurity or crystalline particle accumulation after, influence the normal use of spring；3, it needs to increase a spring base, increases into
This, reduces assembly efficiency.
Utility model content:
The technical problems to be solved in the utility model just, be to provide one kind make rotating ring and rotating seat circumferential direction good limit effect,
Avoid spring exposure in the medium, can be reduced precompressed lost-proof mechanical sealing device of silicon carbide using spring base.
In order to solve the above technical problems, the utility model uses a kind of precompressed lost-proof silicon carbide machine of following technical scheme
Tool sealing device, including covering rotating ring on pump shaft and rotating seat, more springs and connecting and covered outside pump shaft with the pump housing
Stationary ring；The rotating ring with stationary ring under the action of spring by being close to form sealing surface；The outer wall and the pump housing of the stationary ring seal, institute
The outer wall of the inner wall and pump shaft of stating rotating seat seals, one end of the rotating ring be embedded in the stepped hole of rotating seat and rotating ring one
The step surface of end and rotating seat is equipped with circumferential position limiting structure；The rotating ring and rotating seat are equipped with axial sliding clearance；The bullet
One end of spring is embedded in the first mounting hole of the step surface of rotating seat, and one end end face of the other end and rotating ring offsets；It is described dynamic
It is located between the outer wall in rotating seat and the inner wall of rotating seat on ring and seals.
The circumferential direction position limiting structure includes multiple circumferentially equally distributed bolts, and described bolt one end is embedded in rotating seat
Step surface the second mounting hole in, other end activity is embedded in the third mounting hole of one end end face of rotating ring.
The bolt is circumferentially evenly spaced on spring.
The rotating ring and rotating seat refer to equipped with axial sliding clearance, the end of the bolt and the third mounting hole of rotating ring
Inner bottom surface between be equipped with spacing.
The outer wall of the inner wall of the rotating seat and pump shaft is equipped with the first sealing ring, the rotating ring outer wall and rotating seat it is interior
Wall is equipped with the second sealing ring, and the spring is between the first sealing ring and the second sealing ring.
The rotating ring is located at the outer wall in rotating seat equipped with annular groove.
After using the above structure, the utility model compared with prior art, has the following advantages and beneficial effects: 1, rotating ring
With rotating seat using circumferential position limiting structure, i.e., by bolt, bolt one end is made to be embedded in the second installation of the step surface of rotating seat
In hole, other end activity is embedded in the third mounting hole of one end end face of rotating ring, thus the week for having had rotating ring and rotating seat
To limit property.2, since one end of spring is embedded in the first mounting hole of the step surface of rotating seat, the one of the other end and rotating ring
End end face offsets, and makes spring between the first sealing ring and the second sealing ring, to avoid spring exposure in the medium, prevents
After impurity or crystalline particle accumulation in medium, guarantee the normal use of spring.It 3, can after the installation site of the spring changed
To save a spring base, cost can be reduced in this way, increase assembly efficiency.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the precompressed lost-proof mechanical sealing device of silicon carbide of the utility model.
Fig. 2 is the structural schematic diagram of the rotating seat of the utility model.
Fig. 3 is the structural schematic diagram of the rotating ring of the utility model.
Fig. 4 is the portion the A enlarged diagram of Fig. 3.
It is as shown in the figure:
1, pump shaft, 2, rotating ring, 2.1, annular groove, 3, rotating seat, 4, spring, 5, stationary ring, 6, bolt, the 7, first sealing
Circle, the 8, second sealing ring.
Specific embodiment:
The utility model is described in further detail below by specific embodiment, but the utility model be not limited solely to
Lower embodiment.
As shown in Figs 1-4, a kind of precompressed lost-proof mechanical sealing device of silicon carbide of the utility model, including cover in pump shaft
It rotating ring 2 and rotating seat 3, more springs 4 on 1 and is connect with the pump housing and covers the stationary ring 5 outside pump shaft 1；The rotating ring 2 is logical
It crosses under the action of spring 4 and is close to form sealing surface with stationary ring 5；The outer wall and the pump housing of the stationary ring 5 seal, the rotating seat 3
The outer wall of inner wall and pump shaft 1 seals, and one end of the rotating ring 2 is embedded in the stepped hole of rotating seat 3 and one end of rotating ring 2 and dynamic
The step surface of ring seat 3 is equipped with circumferential position limiting structure；The circumferential direction position limiting structure includes multiple circumferentially equally distributed bolts
6, in the second mounting hole of the step surface that described 6 one end of bolt is embedded in rotating seat 3, bolt 6 is using interference close-fitting in the second peace
It fills in hole, other end activity is embedded in the third mounting hole of one end end face of rotating ring 2, and the internal diameter of third mounting hole is greater than bolt
6 outer diameter, so that rotating ring 2 be made to slide axially, rotating seat 3 follows pump shaft 1 to rotate, and drives rotating ring 2 to rotate by bolt 6.It is described
Rotating ring 2 and rotating seat 3 are equipped with axial sliding clearance；Refer to the inner bottom surface of the end of the bolt 6 and the third mounting hole of rotating ring 2
Between be equipped with spacing, so that rotating ring 2 slides axially in the effect of spring 4, in the sealing surface wear of rotating ring 2 and stationary ring 5, spring
4 axial promotion rotating rings 2 are close to toward stationary ring 5, can guarantee sealing effect.One end of the spring 4 is embedded in the step surface of rotating seat 3
The first mounting hole in, one end end face of the other end and rotating ring 2 offsets；It is located at the outer wall in rotating seat 3 on the rotating ring 2 and moves
It is sealed between the inner wall of ring seat 3.The bolt 6 is circumferentially evenly spaced on spring 4.
The inner wall of the rotating seat 3 and the outer wall of pump shaft 1 are equipped with the first sealing ring 7,2 outer wall of rotating ring and rotating seat
3 inner wall is equipped with the second sealing ring 8, and the spring 4 is between the first sealing ring 7 and the second sealing ring 8.
The rotating ring 2 is located at the outer wall in rotating seat 3 equipped with annular groove 2.1, limits rotating ring 2 in a free state in bullet
Rotating seat 3 is pushed away under the action of 4 thrust of spring, the second sealing ring 8 can be embedded in annular groove 2.1 under not compressive state,
It is anti-lost to play the role of limit, facilitate on mechanical seal installation and slewing.As further protection, the annular groove
2.1 do not limit arc, can be the shapes such as arc, rectangular, V-type.
Claims (6)
1. a kind of precompressed lost-proof mechanical sealing device of silicon carbide, including cover rotating ring (2) on pump shaft (1) and rotating seat (3),
It more springs (4) and is connect with the pump housing and covers the stationary ring (5) in pump shaft (1) outside；The rotating ring (2) passes through the work of spring (4)
It is close to form sealing surface with stationary ring (5) with lower；The outer wall of the stationary ring (5) and the pump housing seal, the inner wall of the rotating seat (3) with
The outer wall of pump shaft (1) seals, it is characterised in that: one end of the rotating ring (2) is embedded in the stepped hole of rotating seat (3) and rotating ring
(2) step surface of one end and rotating seat (3) is equipped with circumferential position limiting structure；The rotating ring (2) and rotating seat (3) are equipped with axial
Glade plane space；In first mounting hole of the step surface that one end of the spring (4) is embedded in rotating seat (3), the other end and rotating ring
(2) one end end face offsets；It is located on the rotating ring (2) close between the outer wall in rotating seat (3) and the inner wall of rotating seat (3)
Envelope.
2. a kind of precompressed lost-proof mechanical sealing device of silicon carbide according to claim 1, it is characterised in that: the circumferential direction
Position limiting structure includes multiple circumferentially equally distributed bolts (6), and described bolt (6) one end is embedded in the step of rotating seat (3)
In second mounting hole in face, other end activity is embedded in the third mounting hole of one end end face of rotating ring (2).
3. a kind of precompressed lost-proof mechanical sealing device of silicon carbide according to claim 2, it is characterised in that: the bolt
(6) it is circumferentially evenly spaced on spring (4).
4. a kind of precompressed lost-proof mechanical sealing device of silicon carbide according to claim 2, it is characterised in that: the rotating ring
(2) refer to rotating seat (3) equipped with axial sliding clearance, the end of the bolt (6) is interior with the third mounting hole of rotating ring (2)
Spacing is equipped between bottom surface.
5. a kind of precompressed lost-proof mechanical sealing device of silicon carbide according to claim 1, it is characterised in that: the rotating ring
The inner wall of seat (3) and the outer wall of pump shaft (1) are equipped with the first sealing ring (7), and rotating ring (2) outer wall is interior with rotating seat (3)
Wall is equipped with the second sealing ring (8), and the spring (4) is between the first sealing ring (7) and the second sealing ring (8).
6. a kind of precompressed lost-proof mechanical sealing device of silicon carbide according to claim 1, it is characterised in that: the rotating ring
The inner wall of seat (3) is equipped with ring rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821225049.7U CN208686644U (en) | 2018-08-01 | 2018-08-01 | A kind of precompressed lost-proof mechanical sealing device of silicon carbide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821225049.7U CN208686644U (en) | 2018-08-01 | 2018-08-01 | A kind of precompressed lost-proof mechanical sealing device of silicon carbide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208686644U true CN208686644U (en) | 2019-04-02 |
Family
ID=65882940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821225049.7U Active CN208686644U (en) | 2018-08-01 | 2018-08-01 | A kind of precompressed lost-proof mechanical sealing device of silicon carbide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208686644U (en) |
-
2018
- 2018-08-01 CN CN201821225049.7U patent/CN208686644U/en active Active
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