CN201271568Y - Lower-stirring sealing device - Google Patents
Lower-stirring sealing device Download PDFInfo
- Publication number
- CN201271568Y CN201271568Y CNU2008201605302U CN200820160530U CN201271568Y CN 201271568 Y CN201271568 Y CN 201271568Y CN U2008201605302 U CNU2008201605302 U CN U2008201605302U CN 200820160530 U CN200820160530 U CN 200820160530U CN 201271568 Y CN201271568 Y CN 201271568Y
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- Prior art keywords
- stirring
- sealing device
- capsule
- plasticity
- plastic bag
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- Expired - Fee Related
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Abstract
The utility model provides a bottom stirring and sealing device which can be repaired without discharging materials in an stirring kettle or reducing pressure in the stirring kettle, comprising an universal stirring and sealing device and a plastic bag sleeved on a stirring shaft, wherein, the plastic bag is arranged on one side of the universal stirring and sealing device near the stirring kettle, and the plastic bag is communicated with a compressed gas source. When compressed gas is pumped into the plastic bag, the plastic bag expands towards the stirring shaft along the radial direction of the stirring shaft so as to form sealing contact between the plastic bag and the stirring shaft. When the universal stirring and sealing device needs repairing or being replaced due to leakage, the compressed gas is pumped into the plastic bag, and the plastic bag radially deformed so as to achieve a sealing effect that the plastic bag clings tightly to the stirring shaft, thus preventing the materials in the stirring kettle from leaking; and then the repairing and the replacing can be carried out on the universal stirring and sealing device, therefore, the repairing for the bottom universal stirring and sealing device is realized without discharging the materials in the stirring kettle or reducing the pressure in the stirring kettle.
Description
Technical field
The utility model relates to the following stirring sealing device of shaft movable sealing under the stirred tank.
Technical background
Following stirring sealing device is a kind of sealed product that the shaft movable sealing is adopted under the stirred tank.Along with the development of industrial technology under stir sealing device and have higher requirement, usually the following stirring sealing device that adopts is a double mechanical seal, be to feed the sealing fluid higher slightly in the annular seal space, descend the stirring sealing device just to make sealing fluid few as far as possible like this to the stirred tank internal leakage than stirred tank internal pressure.Material does not leak to the outside in the stirred tank thereby reach.(also can be considered with sealing fluid and blocked the leakage of material in the stirred tank).But at emergency rating, be higher than the annular seal space internal pressure as the stirred tank internal pressure, perhaps double mechanical seal leaks when running status, and when need changing double mechanical seal, this general stirring sealing device has down just run into difficulty, just can change double mechanical seal after the stirred tank internal pressure have to being reduced (emptying) or bleeding off material.
Summary of the invention
The purpose of this utility model provides and a kind ofly need not bleed off material in the stirred tank or the stirred tank internal pressure just be reduced the following stirring sealing device that can overhaul general time stirring sealing device.
This is the stirring sealing device down, comprise the general stirring sealing device that is arranged on the shaft that extend in the stirred tank, it also comprises the plasticity capsule that is sleeved on the shaft, and the plasticity capsule is in the side of general stirring sealing device near stirred tank, and the plasticity capsule communicates with compressed gas source; When feeding Compressed Gas in the plasticity capsule, the plasticity capsule radially expands and makes that forming sealing between plasticity capsule and the shaft contacts to shaft along shaft.
Its operation principle: during normal condition, the plasticity capsule does not contact with shaft; Need to repair when changing when general stirring sealing device (as double mechanical seal) generation leakage, by charging into Compressed Gas to the plasticity capsule, because plasticity capsule radial deformation, reach sealing effectiveness and be adjacent to shaft, stoped in the stirred tank material to external leakage.Can change general stirring sealing device place under repair, accomplish need not bleed off in the stirred tank material or the stirred tank internal pressure is reduced and could overhaul general stirring sealing device down.
The contract pressure of gas of above-mentioned down stirring sealing device, plasticity intracapsular pressure is higher than the stirred tank internal pressure.Charge in the plasticity capsule than the compressed air of stirred tank internal pressure greater than 0.02MPa, plasticity capsule internal diameter just can dilatancy be adjacent to shaft, thereby reaches better sealing effectiveness.
Above-mentioned stirring sealing device down, the plasticity capsule comprises annular ledge, is arranged on the capsule skin of annular ledge bore area, and capsule skin upper and lower side is connected with the sealed at both ends of annular ledge, and annular ledge has the through hole that is communicated with compressed gas source and capsule skin.
Description of drawings
Fig. 1 is to use the schematic diagram of the following agitating device of stirring sealing device down of the present utility model.
Fig. 2 is the following stirring sealing device partial enlarged drawing (normal condition) among Fig. 1.
Fig. 3 is following stirring sealing device partial enlarged drawing (emergency rating).
The specific embodiment
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Among Fig. 1-3, following stirring sealing device comprises general double end-face mechanical sealing device 2 that is arranged on the shaft 1 that extend in the stirred tank and the plasticity capsule 3 that is sleeved on the shaft, and the plasticity capsule is in the side of general stirring sealing device near stirred tank.The plasticity capsule comprises annular ledge 31, is arranged on the capsule skin 32 of the recessed bore area of annular ledge, and capsule skin upper and lower side 33 is connected with the sealed at both ends of annular ledge.Annular ledge has the through hole 34 that is communicated with compressed gas source and capsule skin.When feeding Compressed Gas in the plasticity capsule, the capsule skin radially expands and makes that forming sealing between capsule skin and the shaft contacts to shaft along shaft.The contract pressure of gas of plasticity intracapsular pressure is higher than stirred tank internal pressure 0.02MPa.
The utility model is to have set up the plasticity capsule at general stirring sealing device side medium, the plasticity capsule does not contact with shaft under normal condition, under emergency rating by charging into gas to the plasticity capsule, because its radial deformation, reach sealing effectiveness and be adjacent to, stoped in the stirred tank material to external leakage with shaft.According to material in the stirred tank and operating mode difference, the capsule skin is by rubber or plastic material manufacturing, as selecting acrylonitrile-butadiene rubber, fluorubber, rubber-plastics material for use, with requirements such as satisfied temperature, corrosion.
The utility model is combined plasticity capsule and general stirring sealing device, is the lower stirring sealing dress with stop seal Put, under emergency rating, pass into compressed air and can reach sealing effectiveness. At this moment just can not unload in not release of the material situation Carry out the replacing service work of double mechanical seal.
Claims (3)
1. descend the stirring sealing device, comprise the general stirring sealing device that is arranged on the shaft that extend in the stirred tank, it is characterized in that: further comprising the plasticity capsule that is sleeved on the shaft, the plasticity capsule is in the side of general stirring sealing device near stirred tank, and the plasticity capsule communicates with compressed gas source; When feeding Compressed Gas in the plasticity capsule, the plasticity capsule radially expands and makes that forming sealing between plasticity capsule and the shaft contacts to shaft along shaft.
2. according to the described down stirring sealing device of claim 1, it is characterized in that: the contract pressure of gas of plasticity intracapsular pressure is higher than the stirred tank internal pressure.
3. according to claim 1 or 2 described stirring sealing devices down, it is characterized in that: the plasticity capsule comprises annular ledge, is arranged on the capsule skin of annular ledge bore area, capsule skin upper and lower side is connected with the sealed at both ends of annular ledge, and annular ledge has the through hole that is communicated with compressed gas source and capsule skin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201605302U CN201271568Y (en) | 2008-09-26 | 2008-09-26 | Lower-stirring sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201605302U CN201271568Y (en) | 2008-09-26 | 2008-09-26 | Lower-stirring sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201271568Y true CN201271568Y (en) | 2009-07-15 |
Family
ID=40881921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201605302U Expired - Fee Related CN201271568Y (en) | 2008-09-26 | 2008-09-26 | Lower-stirring sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201271568Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943883A (en) * | 2012-11-23 | 2013-02-27 | 四川中自尾气净化有限公司 | Elastic seal positioning device |
| CN103238013A (en) * | 2010-10-27 | 2013-08-07 | 原子能和替代能源委员会 | Seal packing arranged between two opposite elements and around an axis |
| CN106352089A (en) * | 2016-09-27 | 2017-01-25 | 清华大学 | Novel self-compensation A-shaped seal ring |
| CN110253816A (en) * | 2019-08-02 | 2019-09-20 | 张良芹 | A kind of chemical materials polyurethane foaming machine |
| CN114534609A (en) * | 2022-04-02 | 2022-05-27 | 东莞市琅菱机械有限公司 | Sealing system for stirrer and working method thereof |
-
2008
- 2008-09-26 CN CNU2008201605302U patent/CN201271568Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103238013A (en) * | 2010-10-27 | 2013-08-07 | 原子能和替代能源委员会 | Seal packing arranged between two opposite elements and around an axis |
| CN102943883A (en) * | 2012-11-23 | 2013-02-27 | 四川中自尾气净化有限公司 | Elastic seal positioning device |
| CN106352089A (en) * | 2016-09-27 | 2017-01-25 | 清华大学 | Novel self-compensation A-shaped seal ring |
| CN106352089B (en) * | 2016-09-27 | 2018-01-16 | 清华大学 | A kind of self compensation A type sealing rings |
| CN110253816A (en) * | 2019-08-02 | 2019-09-20 | 张良芹 | A kind of chemical materials polyurethane foaming machine |
| CN114534609A (en) * | 2022-04-02 | 2022-05-27 | 东莞市琅菱机械有限公司 | Sealing system for stirrer and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090715 Termination date: 20170926 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |