CN201827365U - Assembly type two-end face mechanical sealing device - Google Patents
Assembly type two-end face mechanical sealing device Download PDFInfo
- Publication number
- CN201827365U CN201827365U CN2010205680865U CN201020568086U CN201827365U CN 201827365 U CN201827365 U CN 201827365U CN 2010205680865 U CN2010205680865 U CN 2010205680865U CN 201020568086 U CN201020568086 U CN 201020568086U CN 201827365 U CN201827365 U CN 201827365U
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- rings
- mechanical sealing
- sealing device
- machine envelope
- double end
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Abstract
The utility model discloses an assembly type two-end-surface mechanical sealing device comprising a rotation shaft component, two moving rings, an inner helical casing, an outer helical casing, two static rings, a mechanical sealing base and a stop pin, wherein that the two moving rings are closed and sheathed on the rotation shaft component and can synchronously rotate with the rotation shaft component; the inner helical casing is fixedly sheathed on the rotation shaft component and arranged between the two moving rings; the outer helical casing is sheathed outside the inner helical casing; the two static rings are sheathed outside the outer helical casing and arranged between the two moving rings; the mechanical sealing base is sheathed outside the two static rings and connected with the outer edges of the two static rings in a sealed manner, the inner side of the mechanical sealing base is fixedly connected with the outer helical casing, and an elastic element is connected between the mechanical sealing base and each static ring; and the stop pin is connected through the mechanical sealing base, and two ends of the stop pin are respectively linked with the two static rings. The assembly type two-end-surface mechanical sealing device can use the flotation of the two static rings and the seal rings outside the static rings to eliminate damage brought to mechanical seal, thus leading to safer and more reliable mechanical seal, as well as more convenient installation.
Description
Technical field
The utility model design mechanical sealing technology field is specifically related to a kind of unit loading type double end-face mechanical sealing device.
Background technique
In the machinery of rotary type, usually adopt mechanical sealing element to be encapsulated on the rotatingshaft, prevent that working fluid from revealing along rotatingshaft.
Mechanical seal is mainly sealed by the sealing surface that stationary ring (compensated loop) and rotating ring (initiatively ring) form, stationary ring and rotating ring connect with rotatingshaft and grinding chamber sports association respectively by its coupling, during the rotatingshaft rotary work, the fitting surface of stationary ring and rotating ring is in all the time and fits tightly device, stop working fluid to flow out, reach leakage-preventing purpose from its two fitting surface.
The sealing configuration of single end face or Double End is generally adopted in traditional mechanical seal, promptly in seal arrangement, be equipped with a pair of or two pairs of rotating ring and stationary rings perpendicular to rotation axis, the friction pair slide relative of rotating ring and stationary ring, play the seal action to rotatingshaft, the cooling of rotating ring and stationary ring generally is that the recycle pump of outer installing is realized.Above-mentioned traditional mechanical sealing in use, if the equipment rotatingshaft takes place that big play work is beated or cavity pressure when big, all can cause opening of rotating ring and stationary ring sealing surface, perhaps cause the elastic element pretightening force to have greatly changed, finally make mechanical seal reveal.
In view of this, develop a kind of good sealing effect, can not be subjected to the mechanical seal device of rotatingshaft abnormal conditions influence, become the focus of paying close attention in the industry.
Summary of the invention
At the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of unit loading type double end-face mechanical sealing device, and it can effectively guarantee the sealing of equipment inner chamber and rotatingshaft joint.
For achieving the above object, the utility model adopts following technological scheme:
A kind of unit loading type double end-face mechanical sealing device comprises,
One rotating assembly;
Two rotating rings, airtight being sleeved on the described rotating assembly, and can rotate synchronously with described rotating assembly;
The internal spiral cover is fixedly set on the described rotating assembly, and between described two rotating rings;
The external spiral cover is sleeved on the outside that described internal spiral overlaps;
Two stationary rings are set in described external spiral cover outside, and between described two rotating rings;
Machine envelope seat is socketed on described two stationary ring outsides, and connects with described two stationary ring outer fringe seals, and the inboard of described machine envelope seat is overlapped with described external spiral and fixedlyed connected, and and two stationary rings between be connected with elastic element respectively;
Stop pin is connected on the described machine envelope seat, and two ends connect with described two stationary rings respectively.
Described rotating assembly comprises in rotatingshaft and the fixedly sleeved machine envelope in described rotatingshaft outside and overlapping.
Described two moving ring sleeves are contained in to put in the machine envelope by key and connect synchronously with the interior cover of machine envelope, and the outer side surface of described rotating ring and key puts in described machine envelope and is embedded with a jump ring.
Also be provided with the O RunddichtringO between the cover in the inner edge of described two rotating rings and the described machine envelope.
Described internal spiral cover is fixed in the described machine envelope by the machine-processed rice screw and puts.
Be provided with rectangle alveolus or trapezoidal alveolus on the fitting surface of described internal spiral cover and external spiral cover.
Described elastic element is a spring.
Be provided with seal ring between described two stationary ring outer rims and the described machine envelope seat, the cross section of sealing circle takes the shape of the letter U or Y shape.
The inboard of described machine envelope seat is connected by a locking pin plug-in mounting with described external spiral cover.
The mechanical seal device that the utility model is set forth, its beneficial effect is:
Be symmetrically installed with two groups of rotating rings and stationary ring on the rotatingshaft, promptly form the double seals structure, in the centre of two dynamic and static ring is an internal and external screw cover, on the external diameter of stationary ring a U type or a y-type seal ring, two stationary rings in this external sealing configuration are in all the other each Sealings of quick condition and connect with cover in the machine envelope, working as axle like this produces play and beats, when reaching bigger pressure, utilize floating of two stationary rings, and the seal ring in the stationary ring outside, eliminate the damage that mechanical seal is brought, make mechanical seal more safe and reliable, install more convenient.
Description of drawings
Fig. 1 is the structural representation of a kind of unit loading type double mechanical seal of the utility model;
Fig. 2 is the structural representation of the another kind of unit loading type double end-face mechanical sealing device of the utility model.
Embodiment
Below, in conjunction with the accompanying drawings and embodiment, unit loading type double end-face mechanical sealing device of the present utility model is described further, so that clearerly understand the utility model technological thought required for protection.
Unit loading type double end-face mechanical sealing device as shown in Figure 1, cover 12 fixedly sleeved outsides in it comprises cover 12, two rotating rings 2, two stationary rings 3 in rotatingshaft 11, the machine envelope, wherein machine seals at rotatingshaft 11, and rotational that can be synchronous along rotatingshaft 11 with rotatingshaft 11, two rotating rings 2 are sleeved on the periphery of cover 12 in the machine envelope, itself and the interior cover 12 of machine envelope are provided with the keyway that matches each other, setting-in key 13 in the keyway, rotating ring 2 is set in the machine envelope and connects by key 13 on the cover 12, can rotate synchronously with cover 12 in the machine envelope and rotatingshaft 11; And,, in rotating ring 2 and machine envelope, also be provided with O RunddichtringO 21 between the cover 12 in order to guarantee enough sealings.In addition, for fixing rotating ring 2 and prevent that key 13 is shifted in rotation process, the outside machine envelope that is positioned at rotating ring 2 and key 13 is overlapped 12 and is provided with a jump ring 14, locatees key 13 and rotating ring 2 by jump ring 14; Two stationary rings 3 are sleeved on the periphery of cover 12 in the machine envelope, between two rotating rings 2, and abut in the inwall of two rotating rings 2 respectively.
The outer cover of two stationary rings 3 is equipped with machine envelope seat 5, the inboard of machine envelope seat 5 abuts in the outer rim of external spiral cover 42, and radially be fitted with a stop pin 6 respectively in the both sides of machine envelope seat 5 along rotatingshaft 11, stop pin 6 extends internally and interts to external spiral cover 42, and external spiral cover 42 is fixed on the machine envelope seat 5.Be separately installed with spring 7 between the inner of machine envelope seat 5 and two stationary rings 3, spring 7 can outwards push stationary ring 3, makes on its inwall that abuts in rotating ring 2; In order to guarantee sealing, between the outer rim of two stationary rings 3 and machine envelope 5, be respectively arranged with the seal ring 31 that an end face takes the shape of the letter U.
In conjunction with shown in Figure 2, machine envelope seat 5 and two stationary rings 3 are connected into synchronization structure, and concrete is, are fitted with a stop pin 51 in machine envelope 5 inboard, and the two ends of stop pin 51 are connected to respectively on the stationary ring 3.
According to general mechanical general knowledge as can be known, can also to adopt end face as shown in Figure 2 be the seal ring 31` of Y shape to above-mentioned sealing gasket 31.
In addition, according to general common practise, above-mentioned spring of the present utility model can adopt other elastic elements to replace, for example shell fragment etc.
The running principle of the utility model mechanical seal device is as follows: it can form two cavitys on the both sides of internal and external screw, in when rotatingshaft rotates, produce a bigger self-suction between the external spiral cover, the molten Ji of mechanical seal is advanced, outlet connects an airtight container, inner, the effect of external spiral cover forms an automatic circulating system, have a pressurization mouth on the container, keep suitable pressure in the interior mechanical seal, make machine sealing chamber and the material cavity that will seal remain a pressure difference, guarantee that material can not enter into mechanical seal inside, and the external diameter of stationary ring is the seal ring of a U type or Y type, can bear bigger pressure, guarantee the seal of mechanical seal.
For a person skilled in the art, can make other various corresponding changes and distortion, and these all changes and distortion should belong within the protection domain of the utility model claim all according to technological scheme described above and design.
Claims (9)
1. a unit loading type double end-face mechanical sealing device is characterized in that, the sealing device comprises,
One rotating assembly;
Two rotating rings, airtight being sleeved on the described rotating assembly, and can rotate synchronously with described rotating assembly;
The internal spiral cover is fixedly set on the described rotating assembly, and between described two rotating rings;
The external spiral cover is sleeved on the outside that described internal spiral overlaps;
Two stationary rings are set in described external spiral cover outside, and between described two rotating rings;
Machine envelope seat is socketed on described two stationary ring outsides, and connects with described two stationary ring outer fringe seals, and the inboard of described machine envelope seat is overlapped with described external spiral and fixedlyed connected, and and two stationary rings between be connected with elastic element respectively;
Stop pin is connected on the described machine envelope seat, and two ends connect with described two stationary rings respectively.
2. unit loading type double end-face mechanical sealing device as claimed in claim 1 is characterized in that, described rotating assembly comprises in rotatingshaft and the fixedly sleeved machine envelope in described rotatingshaft outside and overlapping.
3. unit loading type double end-face mechanical sealing device as claimed in claim 2 is characterized in that, described two moving ring sleeves are contained in to put in the machine envelope by key and connect synchronously with the interior cover of machine envelope, and the outer side surface of described rotating ring and key puts in described machine envelope and is embedded with a jump ring.
4. unit loading type double end-face mechanical sealing device as claimed in claim 2 is characterized in that, also is provided with the O RunddichtringO between the cover in the inner edge of described two rotating rings and the described machine envelope.
5. unit loading type double end-face mechanical sealing device as claimed in claim 2 is characterized in that, described internal spiral cover is fixed in the described machine envelope by the machine-processed rice screw and puts.
6. unit loading type double end-face mechanical sealing device as claimed in claim 1 is characterized in that, is provided with rectangle alveolus or trapezoidal alveolus on the fitting surface of described internal spiral cover and external spiral cover.
7. unit loading type double end-face mechanical sealing device as claimed in claim 1 is characterized in that, described elastic element is a spring.
8. unit loading type double end-face mechanical sealing device as claimed in claim 1 is characterized in that, is provided with seal ring between described two stationary ring outer rims and the described machine envelope seat, and the cross section of sealing circle takes the shape of the letter U or Y shape.
9. unit loading type double end-face mechanical sealing device as claimed in claim 1 is characterized in that, the inboard of described machine envelope seat is connected by a locking pin plug-in mounting with described external spiral cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205680865U CN201827365U (en) | 2010-10-19 | 2010-10-19 | Assembly type two-end face mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205680865U CN201827365U (en) | 2010-10-19 | 2010-10-19 | Assembly type two-end face mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201827365U true CN201827365U (en) | 2011-05-11 |
Family
ID=43965902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205680865U Expired - Fee Related CN201827365U (en) | 2010-10-19 | 2010-10-19 | Assembly type two-end face mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201827365U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619989A (en) * | 2012-03-07 | 2012-08-01 | 大连华阳光大密封有限公司 | Back-to-back type tailstock-sharing weld metal bellows seal |
| CN103883733A (en) * | 2014-03-03 | 2014-06-25 | 浙江长城减速机有限公司 | Single mechanical seal with elastic sealing ring and double mechanical seal with elastic sealing ring |
| CN114060520A (en) * | 2021-11-10 | 2022-02-18 | 浙江环誉泵业科技有限公司 | Linkage type double-sealing-tape mechanical seal |
-
2010
- 2010-10-19 CN CN2010205680865U patent/CN201827365U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619989A (en) * | 2012-03-07 | 2012-08-01 | 大连华阳光大密封有限公司 | Back-to-back type tailstock-sharing weld metal bellows seal |
| CN103883733A (en) * | 2014-03-03 | 2014-06-25 | 浙江长城减速机有限公司 | Single mechanical seal with elastic sealing ring and double mechanical seal with elastic sealing ring |
| CN103883733B (en) * | 2014-03-03 | 2016-03-30 | 浙江长城减速机有限公司 | Single mechanical end face seal with elastic sealing ring and double mechanical seal |
| CN114060520A (en) * | 2021-11-10 | 2022-02-18 | 浙江环誉泵业科技有限公司 | Linkage type double-sealing-tape mechanical seal |
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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: 20110511 Termination date: 20141019 |
|
| EXPY | Termination of patent right or utility model |