CN2050913U - Seal unit for stopping motion of centrifugal machine - Google Patents
Seal unit for stopping motion of centrifugal machine Download PDFInfo
- Publication number
- CN2050913U CN2050913U CN 89206242 CN89206242U CN2050913U CN 2050913 U CN2050913 U CN 2050913U CN 89206242 CN89206242 CN 89206242 CN 89206242 U CN89206242 U CN 89206242U CN 2050913 U CN2050913 U CN 2050913U
- Authority
- CN
- China
- Prior art keywords
- seal ring
- side end
- dynamic seal
- shift fork
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model discloses a wedging block sealing device for the stopping motion of centrifugal machines, in which one side end of a dynamic sealing ring is formed into a fixed side end by being connected with a positioning guide block, and the other side end of the dynamic sealing ring is formed into a moving side end by being connected with a moving block. When a shaft rotates, and a wedging block makes radial and axial motion along guide wedging surface because of centrifugal force, a shifting-fork moving block also makes axial motion with the wedging block, driving the moving side end of the dynamic sealing ring to make axial motion, so sealing face for stopping motion is opened; when the shaft stops rotating, the sealing face is closed again by spring force. The utility model can endure higher static sealing pressure, and the spring and the wedging block which are positioned at medium can not enter the outer side of the dynamic sealing ring, so the utility model can not be rusted.
Description
The utility model relates to a kind of seal arrangement, is specifically related to a kind of centrifugal machinery stop working sealing device that is used with the sub-propeller dynamic sealing device.
The axle envelope of some equipment, for example adopt the axle envelope of the pump of sub-propeller dynamic sealing device, in the running, owing to utilize sub-propeller to carry out dynamic seal, so can guarantee that medium does not leak, but when rotating speed reduced or stop, this dynamic seal just lost sealability, so need be used the leakage of parking sealing arrangement when preventing to stop.But; parking sealer is if use fixed packing seal or rubber sealing, and sealing surface can very fast abrasion because of continuous phase mutual friction when then turning round, especially at chemical industry, metallurgy, mine industry; because it is the medium of handling often contains suspended particulate or is corrosive, therefore more fragile.The centrifugal force that counterweight member produced when existing several now utilizations were turned round is opened automatically to avoid the centrifugal from freeing the formula parking sealer of abrasion sealing surface.A kind of parking sealing arrangement for example shown in Figure 4, at vehicle stop state as shown in the figure, owing to be located at the pushing effect of the spring of dynamic seal ring 2 inboards, stationary seal ring 1 leans and seals with the seal face of dynamic seal ring 2; When running, place the centrifugal force of counterweight member 3 generations of dynamic seal ring 2 excircles part that whole dynamic seal ring 2 is outwards got rid of, thereby open sealing surface automatically to avoid abrasion.But this kind device, the medium that spills from stationary seal ring 1 can enter the inboard of the dynamic seal ring 2 that is provided with spring by the mobile side end of dynamic seal ring 2, so spring can contact with medium, thereby corrosion takes place easily and influence elasticity and working life, and axial float takes place in this dynamic seal ring 2 easily, influences sealing effect.For addressing these problems, Chinese patent 86204539 has proposed a kind of dynamic seal ring of not establishing spring as shown in Figure 5, the fixed side end 2b that it is divided into the inner ring of the dynamic seal ring 2 that the elastic-like material of rubber and plastic makes to be fixed in axle by shaped design and can be relative to spool making the axially movable side end 2a two-part that move, during running, the centrifugal force that counterweight member 3 produces makes mobile side end 2a close to fixed side end 2b, thereby open sealing surface to avoid abrasion, and centrifugal force disappears when stopping, and the elastic force of material itself makes mobile side end 2a reinstatement to close sealing surface.The no metal construction of this kind device is exposed to medium, so the corrosion problem can not take place; Fixedly side is arranged, so generally also axial float can not take place.But the time, owing to only utilize the elastic force of nonmetallic material itself to seal,, can not be used in high-pressure medium so its quiet envelope pressure energy power is little.Because the centrifugal force that increases with rotating speed makes dynamic seal ring be subjected to unconfined radial pull, make dynamic seal ring again, tended to the thin-walled portion of stretching fixed side end 2b when particularly turning round, easier generation fatigue fracture influences working life.
The purpose of this utility model is, a kind of centrifugal machinery stop working sealing device with following characteristics is provided, and the no metal construction of this device is exposed to medium thereby corrosion can not takes place, and dynamic seal ring can not made axial float yet; Can bear the quiet envelope of higher parking during parking and press, can be used in high-pressure medium; The dynamic seal ring that elastic material constitutes can not be subjected to unconfined radial pull, and only be subjected to limited axial pressure in the running, thereby is difficult for taking place fatigue fracture.
The centrifugal machinery stop working sealing device that the utility model provides, comprise stationary seal ring, and dynamic seal apparatus with the dynamic seal ring that constitutes by elastic material, described dynamic seal ring has following 3 parts at least: have the parking sealer end face that cooperates with described stationary seal ring, the mobile side end that can move vertically, be fixed in the fixed side end of axle, thereby and connect these two side ends, wall than thin more yielding attachment portion, in addition, in the outside of this dynamic seal ring, described dynamic seal apparatus also has: the location guide block that is fixed in axle (axle sleeve); Fuse with the mobile side end of described dynamic seal ring, and can make axially movable shift fork moving block by described relatively location guide block by at least two axial power transmission guiding elements; Along the circumferentially even cloth of shift fork moving block, make described location guide block and shift fork moving block have a plurality of springs of separation trend; Can be located at with radially moving freely evenly offer along the circumferencial direction of described shift fork moving block each radially in guide hole or the guide groove, the top has a plurality of voussoirs of guide surface; Be fixed in the stationary seal ring side of described location guide block, and have voussoir guide pad with the relative or contacted guiding wedge face portion of guide surface of described voussoir with the relative side of guide block, location.
According to parking sealing arrangement of the present utility model, at vehicle stop state, spring is by the shift fork moving block, the mobile side end pushing of the dynamic seal ring that fuses with the shift fork moving block is resisted against on the stationary seal ring, has the bigger quiet envelope pressure energy power of bearing so close pair is sealed in the parking of closing; Metal constructions such as spring all are located at the outside of dynamic seal ring, can not contact with medium, so corrosion can not take place; During running, the guiding wedge surface of voussoir guide pad makes voussoir under the centrifugal action in the outer side shifting of radial direction, also move a certain distance towards the location guide block, and by the shift fork moving block that moves of guiding element vertically only, the mobile side end of dynamic seal ring is moved a certain distance towards its fixed side end, thereby the parking sealer face is opened automatically, at this moment, dynamic seal ring only is subjected to limited axial pressure, amount of deformation is also very limited, as long as be enough to open the parking sealer face, so, be not easy to take place fatigue fracture; Dynamic seal rings etc. are all by guide block location, location or spacing, so dynamic seal apparatus can not made axial float.
In the accompanying drawing, Fig. 1 is the sectional drawing under an embodiment's of the utility model the vehicle stop state, and the sectional drawing of dynamic seal apparatus among Fig. 1 among Fig. 2, Fig. 3 are the sectional drawing of device shown in Figure 1 under operating condition.Shown in Figure 4 is existing a kind of parking sealing arrangement, and shown in Figure 5 is existing another kind of parking sealing arrangement.
Below will utilize Fig. 1-Fig. 3 that an embodiment of the present utility model is described.
As shown in Figure 1, stationary seal ring 1 is fixed on the accessory lobes wheel cover 4, the 5th, sub-propeller, be adjacent to the parking sealer end face of this stationary seal ring 1 and what put is the dynamic seal ring 2 that rubber material constitutes, being positioned of this dynamic seal ring 2 away from the side end of stationary seal ring 1 embeds in the groove of location guide block 6, become fixed side end 2b(and see Fig. 2), and location guide block 6 is fixed on the axle sleeve 8 by screw 7.The promptly mobile side end 2a(of the side end of the close stationary seal ring 1 of dynamic seal ring 2 sees Fig. 2) be provided with groove, an end of shift fork moving block 9 embeds in this groove, thereby the shift fork moving block 9 and the mobile side end 2a of dynamic seal ring 2 are combined as a whole.The attachment portion 2c that connects mobile side end 2a and fixed side end 2b is positioned at the cavity 10 that allows its distortion, and its wall is thin thereby more yielding, and the cross section is archwise roughly.At shift fork moving block 9 and opposite side location guide block 6, be provided with two at a distance of about 180 ° axial pilot holes, the power transmission guide finger 11 that cardinal extremity is fixed in location guide block 6 stretches in this pilot hole with can making slide relative.At vehicle stop state shown in Figure 1, between shift fork moving block 9 and location guide block 6, there is an interval S(to see Fig. 2), this interval S defines the axial internal clearance that shift fork moving block 9 also is the mobile side end 2a of dynamic seal ring 2, thereby has also limited the compressive deformation amount of attachment portion 2c.Be fixed on the guide block 6 of location along equally distributed a plurality of spring 12 1 ends of the circumferencial direction of shift fork moving block 9, the other end is resisted against at the bottom of the hole in the axle spring hole of being located on the shift fork moving block 9, pushing shift fork moving block 9, and by its part that combines with the mobile side end 2a of dynamic seal ring 2, the parking sealer end face of mobile side end 2a and the parking sealer end face of stationary seal ring 1 are combined closely, play the parking seal action.In addition,, also be provided with a plurality of equally distributed radially-directeds hole, be equipped with the voussoir 13 that shift fork moving block 9 is relatively done radial motion in each pilot hole respectively along the circumferencial direction of shift fork moving block 9.The top of exposing outside the pilot hole of voussoir 13 is spherical male curved surfaces.Profile is fixed on the stationary seal ring side of location guide block 6 by screw 15 as the voussoir guide pad 14 of cover cap, the radial direction external lateral portion of the side that it is relative with location guide block 6, be a conical surface 14a who extends to the radial direction outside along with close location guide block 6, this conical surface 14a is the guiding wedge surface for voussoir 13 guiding.In the present embodiment, as shown in Figure 2, dynamic seal ring 2 also moves side end 2a from it and extends to radial direction, forms the cover plate part 2d in conjunction with the end that covers shift fork moving block 9 and voussoir guide pad 14.
When axle begins to rotate, by location guide block 6, power transmission guide finger 11 and the voussoir that rotates with the axis 13 are because centrifugal force and outwards getting rid of, when forcing voussoir 13 to get rid of outside, the guiding wedge surface 14a of voussoir guide pad 14 moves axially towards location guide block 6, thereby drive the active force that shift fork moving block 9 overcomes spring 12, move towards location guide block 6 along power transmission guide finger 11, again owing to the mobile side end 2a of shift fork moving block 9 with dynamic seal ring 2 is combined into one, so mobile side end 2a is also simultaneously close to fixed side end 2b, thereby the parking sealer face is opened, become state shown in Figure 3.Promptly, certain interval (being about 2mm) has been arranged between stationary seal ring 1 and the dynamic seal ring 2, and shift fork moving block 9 is adjacent to mutually with the location between the guide block 6, does not have S at interval in operating condition shown in Figure 3.This moment dynamic seal ring 2, especially its attachment portion 2c is in the compressive deformation state.
At stable moving commentaries on classics state, each member of dynamic seal apparatus, comprise that dynamic seal ring 2, shift fork moving block 9, voussoir 13, location guide block 6 and voussoir guide pad 14 all with the rotation synchronously of axle (axle sleeve 8) do, do not have relative movement, each other so there is not abrasion each other.Because dynamic seal ring 2 is provided with cover plate part 2d, can prevent the metal construction part that enters dynamic seal apparatus from the medium that spills between stationary seal ring 1 and the axle sleeve 8 effectively again, so metal constructions such as spring 12, voussoir 13 are difficult for taking place corrosion.And except that dynamic seal ring 2, the actuating member of shift fork moving block 9 grades all moves in the space of sealing, and dust etc. can not enter in this motion space, so even operation under the environment of many floating dusts such as mine, can very fast damage yet.So this parking sealing arrangement is reliable in action not only, and applied widely, long service life.
In the present embodiment, the mobile side end 2a and the shift fork moving block 9 of dynamic seal ring 2, and fixed side end 2b all is combined into one by the groove of tabling with location guide block 6, can make like this as the dynamic seal 2 of easily damaged parts and be convenient to loading and unloading, but also can adopt other Placements, for example use adhesive bonds.In addition, fixed side end 2b also can directly be fixed on the axle (axle sleeve).
In the present embodiment, for shift fork moving block 9 guiding and transmitting torque is that an axially directed hole and an end of being located in the shift fork moving block 9 is fixed in the power transmission guide finger 11 of locating guide block 6, but also can lead, or by axial guiding such as guide groove guide block by the pilot hole of being located at the guide finger on the shift fork moving block 9 and be located in the location guide block 6.
In the present embodiment, what make radial motion guiding for voussoir 13 relative shift fork moving blocks 9 is the radially-directed hole, but also can be the radially-directed groove.
In the present embodiment, the guide surface 13a relative with guiding wedge surface 14a of voussoir 13 is spherical male curved surfaces, also can be the convex surface of other shapes, perhaps, also can change roller into or miniature bearing is made guide surface, replace sliding friction with rolling friction, to reduce abrasion.Perhaps, the guide surface 13a of voussoir 13 also can be the conical surface that coincide with guiding wedge surface 14a tapering, and two conical surface 13a contact with the 14a face and make slide relative, are voussoir 13 guiding.
In the present embodiment, dynamic seal ring 2 is made of rubber material, but also can be with other corrosion resisting elastic material, for example plastics or flexible graphite etc.
In addition, the quantity of voussoir 13, size, weight also can be selected decision according to rotating speed, operating mode etc., to adapt to various demands.
Claims (6)
1, a kind of centrifugal machinery stop working sealing device, the dynamic seal apparatus that comprises stationary seal ring 1 and have the dynamic seal ring 2 that constitutes by elastic material, it is characterized in that described dynamic seal ring 2 has following 3 parts at least: have the parking sealer end face, the energy that cooperate with stationary seal ring 1 and make the axially movable side end 2a that moves relative to axle; Be fixed in the fixed side end 2b of axle (axle sleeve) 8; Thereby connect this both side ends 2a and 2b, the thin more yielding attachment portion 2c of wall, in addition, in the outside of dynamic seal ring 2, described dynamic seal apparatus also has: the location guide block 6 that is fixed in axle (axle sleeve) 8; The shift fork moving block 9 that fuses with the mobile side end 2a of dynamic seal ring 2; Moving axially guiding and making both at least two power transmission guiding elements 11 of rotation synchronously for shift fork moving block 9 relative positioning guide blocks 6; Circumferencial direction along shift fork moving block 9 evenly distributes, and makes shift fork moving block 9 and location guide block 6 have a plurality of springs 12 of separation trend; Be located in a plurality of radially guide holes of evenly offering along the circumferencial direction of shift fork moving block 9 or guide groove, the top has guide surface 13a, shift fork moving block 9 is made a plurality of voussoirs 13 of radial motion relatively; Be fixed in stationary seal ring 1 side of location guide block 6, the side relative with locating guide block 6 has and the voussoir guide pad 14 of the relative or contacted guiding wedge surface of the guide surface 14a of voussoir 13.
2, by the described centrifugal machinery stop working sealing device of claim 1, it is characterized in that the guide surface 13a of described voussoir 13 is spherical male curved surfaces.
3, by the described centrifugal machinery stop working sealing device of claim 1, it is characterized in that the guide surface 13a of described voussoir 13 is formed by roller or miniature bearing.
By the described centrifugal machinery stop working sealing device of claim 1, it is characterized in that 4, the elastic material that constitutes dynamic seal ring 2 is rubber material or flexible graphite.
5, by the described centrifugal machinery stop working sealing device of claim 1, it is characterized in that described dynamic seal ring 2 also has the cover plate part 2d of end that stretches out, covers stationary seal ring 1 side of shift fork moving block 9 and voussoir guide pad 14 from mobile side end 2a.
6, by the described centrifugal machinery stop working sealing device of claim 1, it is characterized in that, the mobile side end 2a of described shift fork moving block 9 and dynamic seal ring 2, and fixed side end 2b and location guide block 6, continuous respectively by chimeric mutually groove respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89206242 CN2050913U (en) | 1989-04-24 | 1989-04-24 | Seal unit for stopping motion of centrifugal machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89206242 CN2050913U (en) | 1989-04-24 | 1989-04-24 | Seal unit for stopping motion of centrifugal machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2050913U true CN2050913U (en) | 1990-01-10 |
Family
ID=4863330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89206242 Pending CN2050913U (en) | 1989-04-24 | 1989-04-24 | Seal unit for stopping motion of centrifugal machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2050913U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100398881C (en) * | 2006-01-15 | 2008-07-02 | 杜杰 | High-speed engine shaft sealing method |
| CN100570181C (en) * | 2007-04-30 | 2009-12-16 | 苏州东菱振动试验仪器有限公司 | Rotating dynamic and static sealing device and application thereof |
| CN102239352A (en) * | 2008-12-10 | 2011-11-09 | 西屋电气有限责任公司 | Thermally activated shutdown seals for rotatable shafts |
| CN103234042A (en) * | 2013-06-01 | 2013-08-07 | 四川日机密封件股份有限公司 | Safe shutdown sealing device |
| CN109595195A (en) * | 2018-12-31 | 2019-04-09 | 虞定生 | A kind of leak-proof sealing device for liquid pump |
| CN109826740A (en) * | 2019-03-29 | 2019-05-31 | 宁波惠山汽配制造有限公司 | It is a kind of to get rid of formula isolator assembly certainly |
| CN110410502A (en) * | 2018-07-13 | 2019-11-05 | 河南蒲瑞精密机械有限公司 | It is a kind of to depressurize oil sealing from driving |
-
1989
- 1989-04-24 CN CN 89206242 patent/CN2050913U/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100398881C (en) * | 2006-01-15 | 2008-07-02 | 杜杰 | High-speed engine shaft sealing method |
| CN100570181C (en) * | 2007-04-30 | 2009-12-16 | 苏州东菱振动试验仪器有限公司 | Rotating dynamic and static sealing device and application thereof |
| CN102239352A (en) * | 2008-12-10 | 2011-11-09 | 西屋电气有限责任公司 | Thermally activated shutdown seals for rotatable shafts |
| CN102239352B (en) * | 2008-12-10 | 2013-12-25 | 西屋电气有限责任公司 | Thermally activated shutdown seals for rotatable shafts |
| CN103234042A (en) * | 2013-06-01 | 2013-08-07 | 四川日机密封件股份有限公司 | Safe shutdown sealing device |
| CN103234042B (en) * | 2013-06-01 | 2015-05-13 | 四川日机密封件股份有限公司 | Safe shutdown sealing device |
| CN110410502A (en) * | 2018-07-13 | 2019-11-05 | 河南蒲瑞精密机械有限公司 | It is a kind of to depressurize oil sealing from driving |
| CN109595195A (en) * | 2018-12-31 | 2019-04-09 | 虞定生 | A kind of leak-proof sealing device for liquid pump |
| CN112032097A (en) * | 2018-12-31 | 2020-12-04 | 马瓯丽 | Leak-proof sealing device for liquid pump |
| CN112032096A (en) * | 2018-12-31 | 2020-12-04 | 马瓯丽 | Leakage-proof sealing device for liquid pump |
| CN112032097B (en) * | 2018-12-31 | 2022-04-15 | 江苏锡安达防爆股份有限公司 | Leak-proof sealing device for liquid pump |
| CN112032096B (en) * | 2018-12-31 | 2022-04-15 | 江苏锡安达防爆股份有限公司 | Leakage-proof sealing device for liquid pump |
| CN109826740A (en) * | 2019-03-29 | 2019-05-31 | 宁波惠山汽配制造有限公司 | It is a kind of to get rid of formula isolator assembly certainly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4989883A (en) | Static and dynamic shaft seal assembly | |
| CN105626870A (en) | Rotary sealing structure with bidirectional sealing function | |
| CN2050913U (en) | Seal unit for stopping motion of centrifugal machine | |
| US5527046A (en) | Seal assembly having resilient load rings | |
| CN201330705Y (en) | Mechanical seal structure of Roots vacuum pump | |
| CN101900208A (en) | Frame seal of dynamic and static ring type | |
| CN1015281B (en) | Centrifugal machinery stop working sealing device | |
| JP3305196B2 (en) | Shaft sealing device | |
| CN2861634Y (en) | Shaft sealing board for actuating device | |
| KR20230104933A (en) | bearings and seals | |
| KR102200572B1 (en) | Springless rotary oil seal | |
| CN2382904Y (en) | Air lubrication non-contact type corrugated pipe mechanical sealing device | |
| CN205896495U (en) | High -speed rotary joint of middling pressure | |
| CN219639437U (en) | Novel high-rotation-speed sealing ring | |
| CN2786329Y (en) | Built-in spring supporting type rubber corrugated pipe | |
| CN219221259U (en) | Radial double-end-face mechanical sealing device | |
| CN201099524Y (en) | Double-prevention type roller | |
| CN217029672U (en) | High-precision rolling bearing | |
| CN213735259U (en) | High-reliability thrust wheel | |
| CN208442278U (en) | A kind of rotating machinery seal assembly fixed structure | |
| CN220706413U (en) | Radial soft end face shaft seal using elastic compensation ring | |
| CN217518723U (en) | Engine tappet lubricating device | |
| CN211525546U (en) | Sealing structure of coal mill edge transmission device | |
| CN216555358U (en) | T-shaped bidirectional rotation combined sealing ring | |
| CN2049967U (en) | High-pressure stillage magnetic force driving head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication |