CN104832452A - Mechanical sealing device - Google Patents
Mechanical sealing device Download PDFInfo
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- CN104832452A CN104832452A CN201510221574.6A CN201510221574A CN104832452A CN 104832452 A CN104832452 A CN 104832452A CN 201510221574 A CN201510221574 A CN 201510221574A CN 104832452 A CN104832452 A CN 104832452A
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- Prior art keywords
- ring
- axle sleeve
- rotating ring
- mechanical seal
- transmission
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- Sealing Devices (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention discloses a mechanical sealing device. The mechanical sealing device comprises a moving ring and a stationary ring which are matched with each other and are used for sealing, wherein the stationary ring is fixedly arranged on a pressing cover, and the moving ring rotates along with a pump shaft; an annular elastic device which is used for compensating sleeves a shaft sleeve located behind the moving ring; the elastic device comprises an annular elastic component, and an elastic rubber layer wraps the elastic component; the inside diameter of the elastic device is smaller than the outside diameter of the shaft sleeve. According to the mechanical sealing device with the structure, the elastic device for compensating is convenient to mount and has no need of holed locating.
Description
Technical field
The present invention relates to a kind of mechanical seal device.
Background technique
In today that science and technology day by day develops, various production industry also arises at the historic moment, and being directed to most industries all needs to carry out fluid transport work, and the development of pump industry also grows steadily.And the mechanical seal of necessary part as pump, because of its indispensable effect, also and then trend goes from strength to strength naturally.
Main flow mechanical seal on market today, for the afford redress part overwhelming majority of power of its compensated loop still relies on spring, or independently big spring, or many little springs combinations.The mechanical sealing effect of spring structure is no doubt all relatively good, but all there are some problems.
Little spring structure, must must be equipped with multiple spring eye to support and fixing spring, multiple spring eye had both added the difficulty of processing, simultaneously because repeatedly process, cannot well ensure each accuracy to size, finally cause compensated loop in discontinuity circumferentially, cause the inclination of seal ring end face and produce leakage.
The structure of big spring, the axial requirements of installation space for the mechanical seal of the pump housing is comparatively large, and it is bad all the time that this result also in its universal performance.The critical conditions that spring power lost efficacy also can be there is in big spring structure in the situation of motor height rotating speed and reversion.
And common spring does not possess sealing, medium can be revealed from the gap of spring.
Summary of the invention
For the technical problem of above-mentioned existence, the invention provides a kind of mechanical seal device, easy for installation, good stability, and can prevent from revealing.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of mechanical seal device, comprises the rotating ring, the stationary ring that cooperatively interact for sealing; Described stationary ring is fixed on gland, and described rotating ring rotates with pump shaft; After described axle sleeve is positioned at rotating ring, cover has the cyclic spring device for compensating; Described elastic device comprises cyclic spring parts, and described elastic member is wrapped with flexible rubber layer; And described elastic device internal diameter is less than axle sleeve external diameter.Have the mechanical seal device of said structure, its elastic device compensated is easy for installation, locates without the need to perforate.And in whole axle sleeve circumferentially uniform force.The effect that rubber layer can be filled with a sealing, can provide again radial pretightening force, endoporus pretightening force acts on axle sleeve, and cylindrical pretightening force acts on rotating ring.Elastic device can be effectively fixed on axle sleeve, and there is not relative movement (axis and sense of rotation) in axle sleeve; Support and fixing rotating ring, ensure rotating ring with the perpendicularity of axle and coaxality.
Improve as one, described elastic member is tapered sleeve shape, its conical surface has some grooves along conical surface bearing of trend; Described groove one end extends to the edge of the less one end of conical surface diameter.There is the elastic member of said structure, larger pretightening force can be provided, and it is little to take up room, reduce the size of whole mechanical seal device.Also make gap between parts little compared with thin size, be convenient to sealing.
Preferred as one, described elastic member is that stainless steel makes, and prevents by dielectric corrosion.
Improve as one, also comprise one for the transmission ring for rotating ring transmission; Described transmission ring is installed in the cavity that axle sleeve and rotating ring surround; The cavity cross section that described axle sleeve and rotating ring surround is corresponding to transmission ring sectional shape; The thickness of cavity is greater than the thickness of transmission ring, and transmission ring can be moved along axle sleeve bearing of trend in the cavities; End in contact after described elastic device front end and transmission ring.The circular groove processing of composition cavity is more convenient, and machining accuracy more easily ensures; And increase lifting surface area, make stressed evenly, to a certain extent reduce instantaneous force to the blastic deformation of each part and infringement, increase the service life.
As one improve, described transmission ring be along axle sleeve even circumferential arrange several, make uniform force, avoid rotating ring to tilt.
Improve as one, described axle sleeve and rotating ring offer mounting groove, and described elastic device is fixedly connected between axle sleeve and rotating ring by mounting groove.In existing mechanical seal device, need on axle sleeve, to process a rotating seat to install rotating ring, also need a spring seat to fix spring.In the present invention, directly rotating ring is arranged on elastic device, and elastic device is directly fixed on axle sleeve, decrease parts, reduce difficulty of processing.
Improve as one, also comprise a cooling chamber surrounded in rotating ring, stationary ring, gland by axle sleeve; Described cooling chamber one end is closed by elastic device, and the other end is closed by outside framework oil seal; Described transmission ring has aperture, makes the sensible elastic device of cooling chamber; Described gland is offered the passage be communicated with cooling chamber.Each parts of mechanical seal, by injecting cooling medium to cooling chamber, can be cooled by all parts of cooling chamber Tongda Machineries sealing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of elastic device.
Fig. 3 is the structural representation of elastic member.
Fig. 4 is the side view of elastic member.
Fig. 5 is A-A sectional view.
Fig. 6 is the state vs schematic diagram of elastic device before seal wears and after wearing and tearing.Its upper half part is the view after wearing and tearing, and lower half portion is the view before wearing and tearing.
Mark in figure: 3 passages, 4 elastic devices, 5 transmission rings, 6 rotating rings, 7 stationary rings, 8 axle sleeves, 9 glands, 10 outside framework oil seals, 11 elastic members, 12 rubber layers, 13 pump shafts, 14 grooves.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in figs 1 to 6, the present invention includes the rotating ring 6, the stationary ring 7 that cooperatively interact for sealing; Described stationary ring 7 is fixed on gland 9, and described rotating ring 6 rotates with pump shaft 13; After described axle sleeve 8 being positioned at rotating ring 6, cover has the cyclic spring device 4 for compensating; Described elastic device 4 comprises cyclic spring parts 11, and described elastic member 11 is wrapped with flexible rubber layer 12; And described elastic device 4 internal diameter is less than axle sleeve 8 external diameter.Elastic member 11 is preferably stainless steel and is made as tapered sleeve shape, its conical surface has some grooves 14 along conical surface bearing of trend; Described groove 14 one end extends to the edge of the less one end of conical surface diameter.Also comprise one for the transmission ring 5 for rotating ring 6 transmission; Described transmission ring 5 is installed in the cavity that axle sleeve 8 and rotating ring 6 surround; The cavity cross section that described axle sleeve 8 and rotating ring 6 surround is corresponding to transmission ring 5 sectional shape; The thickness of cavity is greater than the thickness of transmission ring, and transmission ring 5 can be moved along axle sleeve 8 bearing of trend in the cavities; Described elastic device 4 front end and the rear end in contact of transmission ring 5.Described transmission ring 5 be preferably along axle sleeve 8 even circumferential arrange several, such as 3.Described axle sleeve 8 and rotating ring 6 offer mounting groove, and described elastic device 4 is fixedly connected between axle sleeve 8 and rotating ring 6 by mounting groove.Also comprise a cooling chamber surrounded by axle sleeve 8 and rotating ring 6, stationary ring 7, gland 9; Described cooling chamber one end is closed by elastic device 4, and the other end is closed by outside framework oil seal 10; Described transmission ring 5 has aperture, makes the sensible elastic device 4 of cooling chamber; Described gland 9 is offered the passage 3 be communicated with cooling chamber.
During use, mechanical seal entirety installed on pump shaft 13, conditioner envelope position, is connected and fixed gland 9 and pump case with attachment screw, and relies on rear end securing means to be fixed on pump shaft 13 by axle sleeve 8.Pump shaft 13 rotarily drives axle sleeve 8 and rotates together.Transmission ring 3 is connected on axle sleeve 8, and it drives rotating ring 6 to rotate.Rotating ring 6 under the effect of elastic device 4 all the time with stationary ring 7 end contact, the end face of two rings is through the operation such as plain grinding, grinding, planeness reaches 0.0003mm, intermediate space is very little, mutual surface friction drag is also little, ensures can also effectively prevent sealing medium from slot leakage between end face in relative rotary course at two ring end faces.
Elastic member 11, when being squeezed, because groove 14 exists, to middle shrinkage, thus when axial deformation is very less, can provide larger pretightening force.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a mechanical seal device, comprises the rotating ring, the stationary ring that cooperatively interact for sealing; Described stationary ring is fixed on gland, and described rotating ring rotates with pump shaft; After described axle sleeve is positioned at rotating ring, cover has the cyclic spring device for compensating; It is characterized in that: described elastic device comprises cyclic spring parts, and described elastic member is wrapped with flexible rubber layer; And described elastic device internal diameter is less than axle sleeve external diameter.
2. a kind of mechanical seal device according to claim 1, is characterized in that: described elastic member is tapered sleeve shape, its conical surface has some grooves along conical surface bearing of trend; Described groove one end extends to the edge of the less one end of conical surface diameter.
3. a kind of mechanical seal device according to claim 2, is characterized in that: described elastic member is that stainless steel makes.
4. a kind of mechanical seal device according to claim 1, is characterized in that: also comprise one for the transmission ring for rotating ring transmission; Described transmission ring is installed in the cavity that axle sleeve and rotating ring surround; The cavity cross section that described axle sleeve and rotating ring surround is corresponding to transmission ring sectional shape; The thickness of cavity is greater than the thickness of transmission ring, and transmission ring can be moved along axle sleeve bearing of trend in the cavities; End in contact after described elastic device front end and transmission ring.
5. a kind of mechanical seal device according to claim 4, is characterized in that: described transmission ring be along axle sleeve even circumferential arrange several.
6. a kind of mechanical seal device according to claim 4, it is characterized in that: described axle sleeve and rotating ring offer mounting groove, described elastic device is fixedly connected between axle sleeve and rotating ring by mounting groove.
7. a kind of mechanical seal device according to claim 4, is characterized in that: also comprise a cooling chamber surrounded in rotating ring, stationary ring, gland by axle sleeve; Described cooling chamber one end is closed by elastic device, and the other end is closed by outside framework oil seal; Described transmission ring has aperture, makes the sensible elastic device of cooling chamber; Described gland is offered the passage be communicated with cooling chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510221574.6A CN104832452A (en) | 2015-05-05 | 2015-05-05 | Mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510221574.6A CN104832452A (en) | 2015-05-05 | 2015-05-05 | Mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104832452A true CN104832452A (en) | 2015-08-12 |
Family
ID=53810566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510221574.6A Pending CN104832452A (en) | 2015-05-05 | 2015-05-05 | Mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104832452A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109642676A (en) * | 2016-06-28 | 2019-04-16 | 福斯管理公司 | Dry-running end surface mechanical sealing part |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2345322A1 (en) * | 1973-02-13 | 1974-08-15 | Pechiney Aluminium | SHAFT SEAL |
| WO1986004655A1 (en) * | 1985-02-01 | 1986-08-14 | Pumps W.A. Ltd. | Mechanical seal |
| CN2091373U (en) * | 1991-04-13 | 1991-12-25 | 宜兴市张泽化工设备厂 | Rotary pump axle machinery seal device |
| WO1996016277A1 (en) * | 1994-11-24 | 1996-05-30 | J.C. Ludowici And Son Ltd. | Belleville spring |
| CN204677489U (en) * | 2015-05-05 | 2015-09-30 | 四川大禹机械密封件制造有限公司 | Mechanical seal device |
-
2015
- 2015-05-05 CN CN201510221574.6A patent/CN104832452A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2345322A1 (en) * | 1973-02-13 | 1974-08-15 | Pechiney Aluminium | SHAFT SEAL |
| WO1986004655A1 (en) * | 1985-02-01 | 1986-08-14 | Pumps W.A. Ltd. | Mechanical seal |
| CN2091373U (en) * | 1991-04-13 | 1991-12-25 | 宜兴市张泽化工设备厂 | Rotary pump axle machinery seal device |
| WO1996016277A1 (en) * | 1994-11-24 | 1996-05-30 | J.C. Ludowici And Son Ltd. | Belleville spring |
| CN204677489U (en) * | 2015-05-05 | 2015-09-30 | 四川大禹机械密封件制造有限公司 | Mechanical seal device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109642676A (en) * | 2016-06-28 | 2019-04-16 | 福斯管理公司 | Dry-running end surface mechanical sealing part |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150812 |
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| WD01 | Invention patent application deemed withdrawn after publication |