CN101135376B - Self-tightening type mechanical sealing device - Google Patents
Self-tightening type mechanical sealing device Download PDFInfo
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- CN101135376B CN101135376B CN200610037403A CN200610037403A CN101135376B CN 101135376 B CN101135376 B CN 101135376B CN 200610037403 A CN200610037403 A CN 200610037403A CN 200610037403 A CN200610037403 A CN 200610037403A CN 101135376 B CN101135376 B CN 101135376B
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- ring
- face
- stationary ring
- friction pair
- rotating ring
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Abstract
This invention provides a self-fasten machine sealing device. It includes moving ring, stationary ring and sealing compartment. The sealing compartment is assembled at inner side of casing body and muff-coupled with main shaft and casing body. The inner circumference of moving ring is muff-coupled to rotating shaft. The external end of moving ring has shoulder, which outer circumference is muff-coupled to the inner circumference of sealing compartment. The external end face of moving ring is arranged with compressing nut. The internal end face of moving ring firmly attaches to the step end face of rotating shaft. The inner circumference of moving ring internal end is embedded with 0 shaped ring, which firmly attaches to rotating shaft. The stationary ring is movable muff-coupled between the inner circumference of sealing compartment and outer circumference of moving ring. The external end face of sealing compartment has locating pin, which connects to the stationary ring. The outer circumference of stationary ring is embedded with 0 shaped ring, which firmly attaches to the inner circumference of sealing compartment. The ring groove of moving ring and stationary ring are respectively embedded with attached moving, stationary ring friction pairs. This invention is simple and low cost.
Description
Technical field
The present invention relates to the mechanical sealing technology of equipment running shaft, specifically be meant self-tightening type mechanical sealing device.
Background technique
The physical dimension of existing traditional mechanical sealing is bigger, and complex structure uses, the maintenance requirement condition is higher, and reliability is lower, costs an arm and a leg.
Summary of the invention
The objective of the invention is to overcome the shortcoming and defect of above-mentioned prior art, self-tightening type mechanical sealing device simple in structure, that size is little, functional reliability is high, cost is low is provided.
Purpose of the present invention is achieved through the following technical solutions: this self-tightening type mechanical sealing device, comprise rotating ring, stationary ring, gas-tight silo, described gas-tight silo is fixed on the housing inboard, its respectively with rotating shaft, housing socket; The inner peripheral surface and the rotating shaft of rotating ring are fixedly sleeved, the rotating ring outer end is provided with shoulder, the inner peripheral surface socket of the outer circumferential face of shoulder and gas-tight silo, and the rotating ring exterior edge face is provided with gland nut, the step end face of rotating ring interior edge face and rotating shaft is close to, and the inner inner peripheral surface of rotating ring is embedded with zero shape circle and amplexiforms with rotating shaft sealing; Stationary ring is actively socketed between the outer circumferential face of the inner peripheral surface of gas-tight silo and rotating ring, and gas-tight silo outside end face is provided with locating stud and stationary ring interlocking, and the stationary ring outer circumferential face is embedded with zero shape circle and seals with the gas-tight silo inner peripheral surface and amplexiform; Be embedded with the rotating ring, the stationary ring friction pair that amplexiform mutually in the annular groove of rotating ring, stationary ring respectively.
Must realize the present invention for better, be provided with the less flexible integral ring-shaped spring of rigidity between described stationary ring exterior edge face and the gas-tight silo outside end face, described spring plays the pretension effect to stationary ring.
Have a plurality of lubrication grooves on described rotating ring, the stationary ring friction pair end face, described each lubrication groove evenly distributes along the circle both sides, middle footpath of friction pair end face, and each lubrication groove rear end starts from the cylindrical or the interior circle of friction pair end face, front end tilts to point to the middle footpath circle of friction pair end face but is no more than middle footpath circle, each lubrication groove rear end groove depth front end groove is shallow, and the angle of groove bottom and friction pair end face is an acute angle; The front end of each lubrication groove of described any friction pair end face points to consistent with pairing friction pair direction of relative movement.
Sealing principle of the present invention is:
(1) behind machine startup, working medium pressure P promotes stationary ring and presses to rotating ring, make friction pair contact quiet, rotating ring, friction pair and stationary ring zero shape circle are isolated the high pressure and the normal pressure position of machine, under the situation of rotating shaft rotation, the lubrication groove of friction pair end face forms high-pressure membrane with circle position, footpath in the medium guiding friction pair on the inside and outside round both sides of friction pair, reaches the purpose of sealing;
(2) gas-tight silo is interior without any the member to the rigid constraint of stationary ring, stationary ring floats between gas-tight silo inner peripheral surface and rotating ring outer circumferential face, along with the height fluctuation of working medium pressure P or beating, tilting of rotating shaft, stationary ring is regulated automatically, and the stationary ring friction pair is adjacent to the rotating ring friction pair all the time;
(3) machine down, working medium pressure P disappears, and under the acting in conjunction of stationary ring zero shape circle and stationary ring spring, this self-tightening type mechanical sealing device still keeps sealing.In fact, this moment, stationary ring zero shape circle was compacted, did not have manpower not restore to the original state, thereby stationary ring was pressed on the rotating ring, and under the not high situation of seal request, even cancellation stationary ring spring, this self-tightening type mechanical sealing device still can proper functioning.
The present invention compared with prior art has following advantage and beneficial effect:
(1) change the structure of traditional mechanical sealing, the effect of reduction even cancellation spring utilizes the effect of working medium and working pressure thereof to reach the effect of sealing, simplifies the structure, and has improved functional reliability, has reduced cost.
(2) can be used for the operating mode of the multiple liquid medium of big pressure, big flow, big range of viscosities, is a kind of simple, applied widely, and the seal element practical, that effect is good all can use in the conventional equipment of machinery, chemical industry.
Description of drawings
Fig. 1 is the structural representation of self-tightening type mechanical sealing device of the present invention;
Fig. 2 is the structural representation of friction pair shown in Figure 1;
Fig. 3 be lubrication groove A shown in Figure 2 to structural representation.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment one
As shown in Figure 1, this self-tightening type mechanical sealing device comprises rotating ring 4, stationary ring 3, gas-tight silo 2, and gas-tight silo 2 is fixed on housing 1 inboard, its respectively with rotating shaft 10, housing 1 socket; The inner peripheral surface of rotating ring 4 and rotating shaft 10 are fixedly sleeved, rotating ring 4 outer ends are provided with shoulder 4-1, the inner peripheral surface socket of the outer circumferential face of shoulder 4-1 and gas-tight silo 2, rotating ring 4 exterior edge faces are provided with gland nut 5, the step end face of rotating ring 4 interior edge faces and rotating shaft 10 is close to, and rotating ring 4 inner inner peripheral surfaces are embedded with zero shape circle 11 and amplexiform with rotating shaft 10 sealings; Stationary ring 3 is actively socketed between the outer circumferential face of the inner peripheral surface of gas-tight silo 2 and rotating ring 4, and gas-tight silo 2 outside end faces are provided with locating stud 2-1 and stationary ring 3 interlockings, and stationary ring 3 outer circumferential faces are embedded with zero shape circle 8 and amplexiform with the sealing of gas-tight silo 2 inner peripheral surfaces; Be embedded with rotating ring, the stationary ring friction pair 6,7 be close to mutually in annular groove 4-2, the 3-1 of rotating ring 4, stationary ring 3 respectively.Be provided with spring 9 between stationary ring 3 exterior edge faces and gas-tight silo 2 outside end faces, it is the less flexible integral ring-shaped spring of rigidity, and 9 pairs of stationary rings 3 of spring play the pretension effect.
As shown in Figure 2, have a plurality of lubrication grooves 12 on rotating ring, stationary ring friction pair 6,7 end faces, each lubrication groove 12 evenly distributes along circle 13 both sides, middle footpath of friction pair (6 or 7) end face, and each lubrication groove 12 rear ends start from the cylindrical or the interior circle of friction pair (6 or 7) end face, front end tilts to point to the middle footpath circle 13 of friction pair (6 or 7) end face but is no more than middle footpath circle 13, as shown in Figure 3, each lubrication groove 12 rear end groove depth front end grooves are shallow, and the angle of groove bottom and friction pair (6 or 7) end face is an acute angle; Shown in Fig. 2,3, the front end of each lubrication groove 12 of any friction pair (6 or 7) end face points to consistent with pairing friction pair (7 or 6) direction of relative movement.
This self-tightening type mechanical sealing device is work like this:
(1) behind machine startup, working medium pressure P promotes stationary ring 3 and presses to rotating ring 4, make friction pair 6,7 contacts of dynamic and static ring, friction pair 6,7 and stationary ring zero shape circle 8 are isolated the high pressure and the normal pressure position of machine, under the situation of rotating shaft 10 rotations, the lubrication groove 12 of friction pair 6,7 end faces forms high-pressure membrane with circle 13 positions, footpath in the medium guiding friction pair 6,7 on friction pair 6,7 inside and outside round both sides, reaches the purpose of sealing;
(2) gas-tight silo 2 is interior without any the member to stationary ring 3 rigid constraints, stationary ring 3 floats between gas-tight silo 2 inner peripheral surfaces and rotating ring 4 outer circumferential faces, along with the height fluctuation of working medium pressure P or beating, tilting of rotating shaft 10, stationary ring 3 is regulated automatically, and stationary ring friction pair 7 is adjacent to rotating ring friction pair 6 all the time;
(3) machine down; working medium pressure P disappears; under the acting in conjunction of stationary ring zero shape circle 8 and stationary ring spring 9; this self-tightening type mechanical sealing device still keeps sealing. and in fact, this moment, stationary ring zero shape circle 8 was compacted, did not have manpower not restore to the original state; thereby stationary ring 3 is pressed on the rotating ring 4; under the not high situation of seal request, even cancellation stationary ring spring 9, this self-tightening type mechanical sealing device still can proper functioning.
As mentioned above, just can realize the present invention preferably.
Claims (3)
1. self-tightening type mechanical sealing device, it is characterized in that: comprise rotating ring, stationary ring, gas-tight silo, described gas-tight silo is fixed on the housing inboard, its respectively with rotating shaft, housing socket; The inner peripheral surface and the rotating shaft of rotating ring are fixedly sleeved, the rotating ring outer end is provided with shoulder, the inner peripheral surface socket of the outer circumferential face of shoulder and gas-tight silo, and the rotating ring exterior edge face is provided with gland nut, the step end face of rotating ring interior edge face and rotating shaft is close to, and the inner inner peripheral surface of rotating ring is embedded with O shape circle and amplexiforms with rotating shaft sealing; Stationary ring is actively socketed between the outer circumferential face of the inner peripheral surface of gas-tight silo and rotating ring, and gas-tight silo outside end face is provided with locating stud and stationary ring interlocking, and the stationary ring outer circumferential face is embedded with O shape circle and seals with the gas-tight silo inner peripheral surface and amplexiform; Be embedded with the rotating ring, the stationary ring friction pair that amplexiform mutually in the annular groove of rotating ring, stationary ring respectively, behind machine startup, working medium pressure promotes stationary ring and presses to rotating ring, makes friction pair contact quiet, rotating ring;
Stationary ring floats between gas-tight silo inner peripheral surface and rotating ring outer circumferential face, and along with the height fluctuation of working medium pressure P or beating, tilting of rotating shaft, stationary ring is regulated automatically, and the stationary ring friction pair is adjacent to the rotating ring friction pair all the time.
2. by the described self-tightening type mechanical sealing device of claim 1, it is characterized in that: be provided with flexible integral ring-shaped spring between described stationary ring exterior edge face and the gas-tight silo outside end face.
3. by the described self-tightening type mechanical sealing device of claim 1, it is characterized in that: have a plurality of lubrication grooves on described rotating ring, the stationary ring friction pair end face, described each lubrication groove evenly distributes along the circle both sides, middle footpath of friction pair end face, and each lubrication groove rear end starts from the cylindrical or the interior circle of friction pair end face, front end tilts to point to the middle footpath circle of friction pair end face but is no more than middle footpath circle, each lubrication groove rear end groove depth front end groove is shallow, and the angle of groove bottom and friction pair end face is an acute angle; The front end of each lubrication groove of described any friction pair end face points to consistent with pairing friction pair direction of relative movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610037403A CN101135376B (en) | 2006-08-31 | 2006-08-31 | Self-tightening type mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610037403A CN101135376B (en) | 2006-08-31 | 2006-08-31 | Self-tightening type mechanical sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101135376A CN101135376A (en) | 2008-03-05 |
| CN101135376B true CN101135376B (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610037403A Expired - Fee Related CN101135376B (en) | 2006-08-31 | 2006-08-31 | Self-tightening type mechanical sealing device |
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| CN (1) | CN101135376B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112111291A (en) * | 2020-10-08 | 2020-12-22 | 杨松 | Preparation method of special sealing friction pair for waste tire pyrolysis reaction furnace |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200961694Y (en) * | 2006-08-31 | 2007-10-17 | 华南理工大学 | Self-tightening type mechanical sealing device |
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- 2006-08-31 CN CN200610037403A patent/CN101135376B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200961694Y (en) * | 2006-08-31 | 2007-10-17 | 华南理工大学 | Self-tightening type mechanical sealing device |
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| CN101135376A (en) | 2008-03-05 |
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Granted publication date: 20100512 Termination date: 20210831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |