CN202971911U - Flushing fluid circulating enhancement type double mechanical seal - Google Patents
Flushing fluid circulating enhancement type double mechanical seal Download PDFInfo
- Publication number
- CN202971911U CN202971911U CN 201220681420 CN201220681420U CN202971911U CN 202971911 U CN202971911 U CN 202971911U CN 201220681420 CN201220681420 CN 201220681420 CN 201220681420 U CN201220681420 U CN 201220681420U CN 202971911 U CN202971911 U CN 202971911U
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- ring
- axle sleeve
- mechanical seal
- seal
- stationary ring
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- Sealing Devices (AREA)
Abstract
The utility model discloses flushing fluid circulating enhancement type double mechanical seal which comprises a shaft sleeve, a left moving ring, a right moving ring, a left fixed ring, a right fixed ring and installation seat pressing covers of the left fixed ring and the right fixed ring. The left moving ring and the right moving ring are arranged at the periphery of two ends of the shaft sleeve and rotate along with the shaft sleeve. The left fixed ring and the right fixed ring are respectively connected with end faces of the left moving ring and the right moving ring. The shaft sleeve, the left moving ring, the right moving ring, the left fixed ring, the right fixed ring and the pressing covers form an annulated column sealing space. The annulated column sealing space is communicated with a liquid inlet and a liquid outlet which are formed in each pressing cover. At least two axial grooves are formed in an outer circle of the shaft sleeve. The flushing fluid circulating enhancement type double mechanical seal is good in effect of cooling and washing and simple in structure. Parts or other components in a mechanical sealing device do not need to be added.
Description
Technical field
The utility model relates to a kind of sealing configuration, refers in particular to the unit loading type double mechanical seal that is applied on fluid machinery.
Background technique
Mechanical seal device is widely used in the equipment such as blower fan, pump, reactor, and is poisonous, inflammable, explosive or the medium self-lubricity is poor and seal request when tighter when the fluid of needs sealings, must adopt double mechanical seal.Double mechanical seal is comprised of two pairs of seal faces, form a Seal cage between two pairs of seal faces, introduce seal flush liquid in Seal cage, one of main purpose of introducing seal flush liquid is the lubricated and cool condition that improves between seal face, to avoid the causing lubricating liquid film vaporization to cause dry friction to cause the inefficacy of sealing system due to insufficient lubrication between seal face or because the mechanical seal device operating temperature is too high.seal flush liquid is connected to liquid container with supercharging device by the liquid entering hole on the mechanical seal device gland and liquid outlet, in this liquid container, cooling unit is housed, under the effect of thermosyphon effect, seal flush liquid in mechanical seal device absorb after the heat that two abrasive end faces produce from liquid outlet enter into obtain in liquid container cooling, enter in mechanical seal device from liquid entering hole again, form a thermal cycle campaign, the a large amount of heat that produces when mechanical seal device is worked takes away that it is obtained is cooling, the impurity that seal flush liquid also produces abrasive end face in movement process is taken seal arrangement out of, guaranteed the working effect of seal arrangement.But, in actual use, the effect of thermosyphon effect is so unobvious, and flowing of its formed seal flush liquid is often slower, can not well play the effect that reduces temperature and rinse impurity, affect sealing effect and the working life of mechanical seal device.In order to increase flowing of seal flush liquid, usually adopt and install pump efficiency ring additional or adopt pumping unit to reach its purpose in mechanical seal device, but this has obviously brought again mechanical seal device inner structure complexity, volume increase or the problems such as complex system, cost increase.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of double end-face mechanical sealing device, and it not only has the developing result of lowering the temperature preferably, and simple in structure, does not increase part or other parts in mechanical seal device.
for solving the problems of the technologies described above, a kind of washing solution circulation enhancement mode double mechanical seal of the present utility model, comprise axle sleeve, the left rotating ring and the right rotating ring that are arranged on the circumference of axle sleeve two ends and rotate with axle sleeve, the left stationary ring and the right stationary ring that are connected with right rotating ring end face with left rotating ring respectively, the fitting seat gland of left stationary ring and right stationary ring, described axle sleeve, left rotating ring, right rotating ring, left stationary ring, right stationary ring, gland forms a circular cylindrical seal space, the inlet opening and the liquid outlet opening that arrange on this circular cylindrical seal space and gland lead to, be provided with at least two axial grooves on described sleeve outer circle.
in said structure, owing to being provided with at least two axial grooves on sleeve outer circle, like this by axle sleeve, left rotating ring, right rotating ring, left stationary ring, right stationary ring, in the circular cylindrical seal space that gland forms, the seal flush liquid of introducing is no longer simple a kind of cooling effect to the heat that produces in the sealing mechanism working procedure under the effect of thermosyphon effect, but because the existence of axial groove makes the seal flush liquid effect of being agitated in Seal cage, the seal flush liquid movement velocity is accelerated, can take better the heat of seal face out of, being conducive to thermosyphon effect plays a role better, and improve and rinse kinetic energy, the easier quilt of the impurity that abrasive end face produces is taken seal arrangement out of, guaranteed the working effect of seal arrangement.Above-mentioned cooling flushing action effect is that the axial groove that arranges on described sleeve outer circle reaches, thereby this mechanical seal device is simple in structure, and does not need not increase any additional zero parts.
A kind of preferred implementation of the present utility model, at least two axial grooves that arrange on described sleeve outer circle evenly distribute on circumference, and groove two ends extend to the left and right sealing surface that left and right moving, stationary ring form.In the course of the work, axle sleeve is rotating, when playing agitaion to washing solution, the axial groove that arranges on sleeve outer circle also is subject to the reaction force that washing solution produces groove, axial groove evenly distributes on circumference, can make this reaction force be in state of equilibrium, guarantee the stationarity of mechanical seal device work.And groove two ends extend to the left and right sealing surface that left and right moving, stationary ring form, and the heating source in the time of making like this groove directly reach seal arrangement work to the action effect of seal flush liquid makes the usefulness of the groove that increases reach optimum.
Another kind of preferred implementation of the present utility model, each axial groove that arranges on described sleeve outer circle is the straight trough parallel with the axle sleeve axis.This mode structure is the simplest, is convenient to processing and implementation, is particularly useful for the less mechanical seal device of axial dimension.
The further preferred implementation of the utility model, each axial groove that arranges on described sleeve outer circle is spiral chute, the angle of this spiral chute and axle sleeve centreline space is 5 ° to 60 °, and on gland, the axial position of set inlet opening and liquid outlet opening is positioned at the two ends of the axial groove that arranges on described sleeve outer circle.adopt this embodiment, each axial screw groove that described axle sleeve arranges on its cylindrical in operation process is except playing agitaion seal flush liquid as previously mentioned, can also produce an axial thrust to seal flush liquid, seal flush liquid can axially from one end to the other side produce flowed, and because the inlet opening that arranges on gland and liquid outlet opening arrange respectively two ends with axial groove, that is to say that spiral grooves can promote seal flush liquid and flow to the fluid nose end from the feed liquor nose end on gland, so just can accelerate the circulation of seal flush liquid, its cooling can be stronger with developing result, be particularly useful for the long mechanical seal device of axial dimension.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model washing solution circulation enhancement mode double mechanical seal is described in further detail.
Fig. 1 is the structural representation of a kind of specific embodiments of the utility model washing solution circulation enhancement mode double mechanical seal;
Fig. 2 is the structure for amplifying schematic diagram of Fig. 1 embodiment Intermediate shaft sleeve 3;
Fig. 3 is the drawing in side sectional elevation of axle sleeve 3 shown in Figure 2
In figure, 1-axle sleeve pad, 2-sleeve sealing circle, 3-axle sleeve, 4-driving pin, the left seal ring of moving ring of 5-, the left rotating ring of 6-, the left stationary ring of 7-, the left stationary ring seal ring of 8-, 9-stop pin, 10-gland, 11-spring, the right stationary ring seal ring of 12-, the right stationary ring of 13-, the right seal ring of moving ring of 14-, the right rotating ring of 15-, 16-fixed ring seals circle, 17-driving pin, 18-limiting stopper, 19-retaining ring.
Washing solution circulation enhancement mode double mechanical seal shown in Figure 1, its left end is in the active chamber that needs sealing, on axle sleeve 3 left side endoporus, sleeve sealing circle 2 is installed, form static seal with the rotating shaft of axle sleeve 3 interior installations, axle sleeve 3 rotates with rotating shaft, be evenly equipped with eight axial grooves on the cylindrical of axle sleeve 3 intermediate portions, the two ends of groove are concordant with two seal faces respectively;
The right-hand member that forms the left stationary ring 7 of end face seals with left rotating ring 6 is arranged in gland 10 holes, and left stationary ring seal ring 8 formation static seals are installed between left stationary ring 7 right-hand member cylindricals and gland 10, and left stationary ring seal ring 8 is the O RunddichtringO;
Between the right side of left stationary ring 7 and gland 10, spring 11 is installed, in order to keep the axial pressure between left stationary ring 7 and left rotating ring 6, left stationary ring also is equipped with stop pin 9 on the right side, the other end of stop pin 9 is arranged on gland 10, and stop pin 9 can make left stationary ring 7 keep state of rest with gland 10;
Be bolted on the right-hand member cylindrical of axle sleeve 3 retaining ring 19 is installed, between the cylindrical of the endoporus of retaining ring 19 and axle sleeve 3, fixed ring seals circle 16 is installed, fixed ring seals circle 16 is the O RunddichtringO, in order to realize the static seal between retaining ring 19 and axle sleeve 3;
Retaining ring 16 left sides are equipped with right rotating ring 15, right rotating ring 15 is by driving pin 17 transmissions that are arranged on retaining ring 19,19 of the endoporus of right rotating ring 15 and retaining rings are equipped with right seal ring of moving ring 14, right seal ring of moving ring 14 is the O RunddichtringO, in order to realize the static seal between retaining ring 19 and right rotating ring 15;
The right-hand member that forms the right stationary ring 13 of end face seal with right rotating ring 15 is arranged in the end face groove of gland 10, between the endoporus in right stationary ring 13 left sides and gland 10, right stationary ring seal ring 12 is installed, right stationary ring seal ring 12 is the O RunddichtringO, in order to realize the static seal between right stationary ring 13 and gland 10;
Between right stationary ring 13 left sides and gland 10, spring 11 is installed equally, in order to keep the axial pressure between right stationary ring 13 and right rotating ring 15, the stop pin 9 between right stationary ring 13 and gland 10 is mounted on circumference;
Limiting stopper 18 is arranged on the cylindrical of retaining ring 19, and is stuck in the circumferential groove on gland 10 right sides, and in order to determine the axial position between gland 10 and axle sleeve 3, this limiting stopper 18 is split type structure;
From axle sleeve 3 to left seal ring of moving ring 5, left rotating ring 6, left stationary ring 7, gland 10, right stationary ring seal ring 12, right stationary ring 13, right rotating ring 15, right seal ring of moving ring 14, retaining ring 19, fixed ring seals circle 16 be again to axle sleeve 3, formed a circular cylindrical seal space, the inlet opening and the liquid outlet opening that arrange on this circular cylindrical seal space and gland 10 lead to, in order to introduce seal flush liquid the cooling storage tank of auxiliary device washing solution outside this mechanical seal;
Seal flush liquid in mechanical seal stirs under humidification at eight grooves on axle sleeve 3 cylindricals, absorbed well sealed at both ends heat that produces, temperature rises, under the effect of thermosyphon effect, the seal flush liquid of high temperature flows out from the liquid outlet opening on gland 10 tops the cooling storage tank of auxiliary device washing solution that enters the outside, in this tank after water-cooling tube cools automatically from the liquid entering hole of gland 10 bottoms enters mechanical seal in, form the circulation of washing solution.
Fig. 2 and Fig. 3 show the structural type of the axle sleeve 3 that has eight axial grooves on the cylindrical of intermediate portion.Eight shown axial grooves are the straight trough parallel with axle sleeve 3 axis.
Above-mentionedly only enumerated a kind of preferred implementation of the present utility model, but the utility model is not limited to this, in the situation that without prejudice to the utility model basic principle, can also do many improvement and conversion.As: as described on axle sleeve 3 set axial groove can be not only eight, can be also two, three or more according to the size of mechanical seal diameter; Axial groove can be not only straight trough, also passable spiral chute, and the angle of spiral chute and axle sleeve 3 center lines can be selected in the scope of 5 ° to 60 ° according to the diameter of interaction medium, mechanical seal and the rotation rotating speed of axle sleeve 3, and so on.So long as any structure of doing on the utility model basis is close, intimate change all is considered as falling into protection domain of the present utility model.
Claims (5)
1. washing solution circulation enhancement mode double mechanical seal, comprise axle sleeve (3), the left rotating ring (6) and the right rotating ring (15) that are arranged on the circumference of axle sleeve (3) two ends and rotate with axle sleeve (3), the left stationary ring (7) and the right stationary ring (13) that are connected with right rotating ring (15) end face with left rotating ring (6) respectively, the fitting seat gland (10) of left stationary ring (7) and right stationary ring (13), described axle sleeve (3), left rotating ring (6), right rotating ring (15), left stationary ring (6), right stationary ring (13), gland (10) forms a circular cylindrical seal space, upper inlet opening and the liquid outlet opening that arranges of this circular cylindrical seal space and gland (10) leads to, it is characterized in that: be provided with at least two axial grooves on described axle sleeve (3) cylindrical.
2. washing solution circulation enhancement mode double mechanical seal according to claim 1, it is characterized in that: at least two axial grooves that arrange on described axle sleeve (3) cylindrical evenly distribute on circumference, and groove two ends extend to the left and right sealing surface that left and right moving, stationary ring form.
3. washing solution circulation enhancement mode double mechanical seal according to claim 1 and 2, it is characterized in that: each axial groove that arranges on described axle sleeve (3) cylindrical is the straight trough parallel with axle sleeve (3) axis.
4. washing solution circulation enhancement mode double mechanical seal according to claim 1 and 2, it is characterized in that: each axial groove that arranges on described axle sleeve (3) cylindrical is spiral chute, the angle of this spiral chute and axle sleeve (3) centreline space is 5 ° to 60 °.
5. washing solution circulation enhancement mode double mechanical seal according to claim 4 is characterized in that: the axial position of the upper set inlet opening of described gland (10) and liquid outlet opening is positioned at the two ends of the axial groove that arranges on described axle sleeve (3) cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220681420 CN202971911U (en) | 2012-12-12 | 2012-12-12 | Flushing fluid circulating enhancement type double mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220681420 CN202971911U (en) | 2012-12-12 | 2012-12-12 | Flushing fluid circulating enhancement type double mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971911U true CN202971911U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220681420 Expired - Fee Related CN202971911U (en) | 2012-12-12 | 2012-12-12 | Flushing fluid circulating enhancement type double mechanical seal |
Country Status (1)
| Country | Link |
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| CN (1) | CN202971911U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089020A (en) * | 2014-07-07 | 2014-10-08 | 上海创异流体机械有限公司 | Mechanical seal device with washing and cooling system |
| CN107542933A (en) * | 2016-06-23 | 2018-01-05 | 上海易勒机电设备有限公司 | A kind of integrated mechanical sealing device |
| CN110608288A (en) * | 2019-09-24 | 2019-12-24 | 浙江工业大学 | Sealing cavity |
| CN111622948A (en) * | 2020-06-04 | 2020-09-04 | 浙江力高泵业科技有限公司 | Rotor pump with built-in internal flow balance type self-cleaning mechanical sealing structure |
| CN112744995A (en) * | 2020-12-01 | 2021-05-04 | 安徽工程大学 | Sealing element for desliming environmental protection equipment |
-
2012
- 2012-12-12 CN CN 201220681420 patent/CN202971911U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089020A (en) * | 2014-07-07 | 2014-10-08 | 上海创异流体机械有限公司 | Mechanical seal device with washing and cooling system |
| CN107542933A (en) * | 2016-06-23 | 2018-01-05 | 上海易勒机电设备有限公司 | A kind of integrated mechanical sealing device |
| CN110608288A (en) * | 2019-09-24 | 2019-12-24 | 浙江工业大学 | Sealing cavity |
| CN111622948A (en) * | 2020-06-04 | 2020-09-04 | 浙江力高泵业科技有限公司 | Rotor pump with built-in internal flow balance type self-cleaning mechanical sealing structure |
| CN112744995A (en) * | 2020-12-01 | 2021-05-04 | 安徽工程大学 | Sealing element for desliming environmental protection equipment |
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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: 20130605 Termination date: 20151212 |
|
| EXPY | Termination of patent right or utility model |