CN112576758A - Dry gas seal capable of realizing aseptic requirement - Google Patents
Dry gas seal capable of realizing aseptic requirement Download PDFInfo
- Publication number
- CN112576758A CN112576758A CN202011603382.9A CN202011603382A CN112576758A CN 112576758 A CN112576758 A CN 112576758A CN 202011603382 A CN202011603382 A CN 202011603382A CN 112576758 A CN112576758 A CN 112576758A
- Authority
- CN
- China
- Prior art keywords
- ring
- rotating shaft
- corrugated pipe
- dry gas
- 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.)
- Pending
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000007789 gas Substances 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 13
- 210000004907 gland Anatomy 0.000 claims description 5
- 230000008676 import Effects 0.000 claims 2
- 230000036512 infertility Effects 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 17
- 230000003068 static effect Effects 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 238000004140 cleaning Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3452—Pressing means the pressing force resulting from the action of a spring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3464—Mounting of the seal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/38—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member sealed by a packing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/50—Sealings between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall
- F16J15/52—Sealings between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall by means of sealing bellows or diaphragms
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a dry gas seal capable of realizing aseptic requirements, which comprises a rotating shaft, a tank body and a corrugated pipe, wherein the lower end part of the rotating shaft is sealed by the corrugated pipe, the rotating shaft is movably connected with the corrugated pipe up and down, a driving ring is fixedly arranged on the corrugated pipe through a pin, the driving ring rotates along with a shaft sleeve and the rotating shaft, a main static ring is fixedly arranged at the bottom of a sealing ring through a pin, the main static ring and the driving ring are separated by an annular gas groove, and the bottom end part of an auxiliary dynamic ring is connected with a nitrogen outlet through a spring. The invention belongs to a sterile dry gas seal, which can randomly control the opening and closing of a sealing surface by matching a control gas source, a vacuum source and a nitrogen control source, solves the problem that the non-contact seal cannot sterilize and realizes the problem that the dry gas seal cannot be used in a sterile process.
Description
Technical Field
The invention relates to the field of sealing, in particular to dry gas sealing capable of achieving aseptic requirements.
Background
In a rotary machine in which a rotary shaft is provided so as to penetrate a housing, a dry gas seal structure is widely used as a seal structure for sealing between the rotary shaft and the housing, but generally, a dry gas seal cannot be opened and closed as needed at will at a seal surface, and still has a problem that a non-contact seal cannot be sterilized, and is not suitable for processing in an aseptic process.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, provide a dry gas seal capable of realizing the aseptic requirement, and control the opening and closing of a sealing surface at will by matching a control gas source, a vacuum source and a nitrogen control source, thereby solving the problem that the non-contact seal cannot be sterilized and realizing the problem that the dry gas seal cannot be used in the aseptic technique.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention provides a dry gas seal capable of realizing aseptic requirements, which comprises a rotating shaft, a tank body and a corrugated pipe, wherein a shaft sleeve is sleeved outside the rotating shaft and rotates together with the rotating shaft through a key, the tank body is arranged at the outer side of the bottom end of the rotating shaft, a shaft sleeve gland, a bearing seat, a seal cavity and a connecting flange are fixedly arranged outside the shaft sleeve from top to bottom in sequence through bolts, the lower end part of the rotating shaft is sealed through the corrugated pipe, the rotating shaft and the corrugated pipe are movably connected up and down, a driving ring is fixedly arranged on the corrugated pipe through a pin, the driving ring rotates along with the shaft sleeve and the rotating shaft, a main static ring is fixedly arranged at the bottom of a seal ring through a pin, the main static ring and the driving ring are separated through a ring surface air groove, and a nitrogen inlet, a nitrogen outlet, a, the nitrogen inlet and the nitrogen outlet are symmetrically arranged, the control air source port and the vacuum source port are symmetrically arranged, a spring is arranged between the control air source port, the vacuum source port and the main static ring, an auxiliary static ring and an auxiliary dynamic ring are sequentially arranged in the sealing ring from top to bottom, and the bottom end part of the auxiliary dynamic ring is connected with the nitrogen outlet through the spring.
As a preferred technical scheme of the dry gas sealing device capable of achieving the sterile requirement, the driving ring is fixedly arranged on a corrugated pipe seat of the corrugated pipe through a clamping ring.
Compared with the prior art, the invention has the following beneficial effects:
the invention belongs to a sterile dry gas seal, which can randomly control the opening and closing of a sealing surface by matching a control gas source, a vacuum source and a nitrogen control source, solves the problem that the non-contact seal cannot sterilize and realizes the problem that the dry gas seal cannot be used in a sterile process.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a block diagram of the present invention;
in the figure: 1. a rotating shaft; 2. a tank body; 3. a bellows; 31. a bellows seat; 4. a shaft sleeve; 41. a shaft sleeve gland; 42. a bearing; 43. a bearing seat; 44. sealing the cavity; 45. a connecting flange; 5. a key; 6. a driving ring; 7. a main stationary ring; 8. an annular gas groove; 9. a nitrogen inlet; 10. a nitrogen outlet; 11. controlling the gas source port; 12. a vacuum source port; 13. a spring; 14. a secondary stationary ring; 15. an auxiliary movable ring; 16. and a collar.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation. Wherein like reference numerals refer to like parts throughout.
In addition, if a detailed description of the known art is not necessary to show the features of the present invention, it is omitted. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example 1
As shown in figure 1, the dry gas seal capable of realizing the sterile requirement comprises a rotating shaft 1, a tank body 2 and a corrugated pipe 3, wherein a shaft sleeve 4 is sleeved outside the rotating shaft 1, the shaft sleeve 4 and the rotating shaft 1 rotate together through a key 5, the tank body 2 is arranged on the outer side of the bottom end of the rotating shaft 1, a shaft sleeve gland 41, a bearing 42, a bearing seat 43, a seal cavity 44 and a connecting flange 45 are fixedly arranged outside the shaft sleeve 4 from top to bottom in sequence through bolts, the lower end part of the rotating shaft 1 is sealed through the corrugated pipe 3, the rotating shaft 1 and the corrugated pipe 3 are movably connected up and down, a driving ring 6 is fixedly arranged on the corrugated pipe 3 through a pin, the driving ring 6 rotates along with the shaft sleeve 4 and the rotating shaft 1, a main stationary ring 7 is fixedly arranged at the bottom of the seal ring 44 through a pin, the main stationary ring 7 and the driving ring 6, The nitrogen gas outlet 10, the control gas source port 11 and the vacuum source port 12 are symmetrically arranged, the nitrogen gas inlet 9 and the nitrogen gas outlet 10 are symmetrically arranged, the control gas source port 11 and the vacuum source port 12 are symmetrically arranged, the spring 13 is arranged between the control gas source port 11, the vacuum source port 12 and the main static ring 7, the auxiliary static ring 14 and the auxiliary dynamic ring 15 are sequentially arranged in the sealing ring 44 from top to bottom, and the bottom end part of the auxiliary dynamic ring 15 is connected with the nitrogen gas outlet 10 through the spring 13.
The number of the springs 13 is several.
The driving ring 6 is fixedly mounted on a bellows socket 31 of the bellows 3 via a collar 16.
The auxiliary stationary ring 14 and the auxiliary movable ring 15 are also separated by the annular gas groove 8.
The nitrogen inlet 9 can be used as a cleaning liquid inlet, the nitrogen outlet 10 can be used as a cleaning liquid outlet, and a pipeline (not numbered in the figure) used as a leakage point is arranged at the top of the nitrogen inlet 9
Further, this dry gas seal lets flange 45 fix on jar body 2 through bolted connection, flange 45 and sealed chamber 44, bearing 43, bearing gland 41 pass through the bolt fastening, axle sleeve 4 (the pivot of machine seal promptly) rotates together with pivot 1 through key 5, the lower extreme of pivot 1 passes through bellows 3 and seals, pivot 1 can reciprocate, copper sheathing about axle sleeve 4 is provided with, protection pivot 1 and axle sleeve 4 can not harm, axle sleeve 4 passes through the bearing with bearing frame 43 and is connected the assurance concentricity.
The driving ring 6 is fixed through an O-shaped ring arranged inside and outside and the clamping ring 16, does not change under air pressure and moves up and down, and is fixed with the corrugated pipe seat 31 through a pin, follows the shaft sleeve 4 and rotates together with the rotating shaft 1.
The main static ring 7 acts on the sealing cavity 44 through a pin so as not to rotate, the spring 13 provides an initial closing force to close the main static ring 7 and the main static ring 6, and simultaneously, the gas source and the nitrogen gas source are controlled; control it and reciprocate, open and shut sealed face: the pressure of a control gas source acts on the back of the main static ring 7, and a nitrogen source acts on the front of the main static ring 7 through the ring surface gas groove 8. The sealing surface has the following three states under the action of spring force, control air supply and nitrogen gas supply:
a, when the pressure and the spring force generated by a control gas source are greater than the reverse thrust generated by a nitrogen gas source, the main static ring 7 and the main driving ring 6 are tightly attached and closed, and contact sealing is performed at the moment; the sealed cavity can be flushed with water at this time.
b, when the pressure and the spring force generated by the control gas source are smaller than the reverse thrust generated by the nitrogen gas source, the sealing surface is opened, so that comprehensive sterilization operation can be performed, and the sealing surface can also be sterilized;
and c, when the pressure and the spring force generated by the control air source are slightly smaller than the reverse thrust generated by the nitrogen air source, the sealing surface is opened with a clearance of several micrometers, and the normal working state of the dry air seal is realized.
By randomly controlling the opening and closing of the sealing surface, the problem that non-contact sealing cannot be used for sterilization is solved, and the problem that dry gas sealing cannot be used in a sterile process is solved.
The invention belongs to a sterile dry gas seal, which can randomly control the opening and closing of a sealing surface by matching a control gas source, a vacuum source and a nitrogen control source, solves the problem that the non-contact seal cannot sterilize and realizes the problem that the dry gas seal cannot be used in a sterile process.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. 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. The dry gas seal capable of achieving the aseptic requirement comprises a rotating shaft (1), a tank body (2) and a corrugated pipe (3), and is characterized in that a shaft sleeve (4) is sleeved outside the rotating shaft (1), the shaft sleeve (4) rotates together with the rotating shaft (1) through a key (5), the tank body (2) is installed outside the bottom end of the rotating shaft (1), a shaft sleeve gland (41), a bearing (42), a bearing seat (43), a seal cavity (44) and a connecting flange (45) are sequentially and fixedly installed on the outside of the shaft sleeve (4) from top to bottom through bolts, the lower end of the rotating shaft (1) is sealed through the corrugated pipe (3), the rotating shaft (1) and the corrugated pipe (3) are movably connected from top to bottom, a driving ring (6) is fixedly installed on the corrugated pipe (3) through a pin, and the driving ring (6) rotates together with the shaft sleeve (4) and the rotating shaft, the bottom of sealing washer (44) has main quiet ring (7) through pin fixed mounting, separate mutually through anchor ring gas groove (8) between main quiet ring (7) and the drive ring (6), be provided with nitrogen gas import (9), nitrogen gas export (10), control air supply mouth (11) and vacuum source mouth (12) on sealed chamber (44) respectively, nitrogen gas import (9) and nitrogen gas export (10) symmetrical setting, control air supply mouth (11) and vacuum source mouth (12) symmetrical setting, install spring (13) between control air supply mouth (11), vacuum source mouth (12) and the main quiet ring (7), still set gradually vice quiet ring (14), vice rotating ring (15) from last to down in sealing washer (44), the bottom portion of vice rotating ring (15) is connected through spring (13) and nitrogen gas export (10).
2. A dry gas seal for achieving sterility as claimed in claim 1, wherein the active ring (6) is fixedly mounted to the bellows seat (31) of the bellows (3) by means of a collar (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011603382.9A CN112576758A (en) | 2020-12-29 | 2020-12-29 | Dry gas seal capable of realizing aseptic requirement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011603382.9A CN112576758A (en) | 2020-12-29 | 2020-12-29 | Dry gas seal capable of realizing aseptic requirement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112576758A true CN112576758A (en) | 2021-03-30 |
Family
ID=75144219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011603382.9A Pending CN112576758A (en) | 2020-12-29 | 2020-12-29 | Dry gas seal capable of realizing aseptic requirement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112576758A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB862596A (en) * | 1957-01-26 | 1961-03-15 | Borg Warner | Improvements in or relating to mechanical seals |
| US5121777A (en) * | 1989-11-01 | 1992-06-16 | Dover Corporation | Vapor recovery nozzles and sub-assemblies therefor |
| CN203413127U (en) * | 2013-08-19 | 2014-01-29 | 袁幼谷 | Dry gas seal device of pump double-end-face corrugated pipe |
| CN216742834U (en) * | 2020-12-29 | 2022-06-14 | 上海创异流体机械有限公司 | Dry gas seal capable of realizing aseptic requirement |
-
2020
- 2020-12-29 CN CN202011603382.9A patent/CN112576758A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB862596A (en) * | 1957-01-26 | 1961-03-15 | Borg Warner | Improvements in or relating to mechanical seals |
| US5121777A (en) * | 1989-11-01 | 1992-06-16 | Dover Corporation | Vapor recovery nozzles and sub-assemblies therefor |
| CN203413127U (en) * | 2013-08-19 | 2014-01-29 | 袁幼谷 | Dry gas seal device of pump double-end-face corrugated pipe |
| CN216742834U (en) * | 2020-12-29 | 2022-06-14 | 上海创异流体机械有限公司 | Dry gas seal capable of realizing aseptic requirement |
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