CN101963228B

CN101963228B - Cartridge type double-shaft seal

Info

Publication number: CN101963228B
Application number: CN200910160807A
Authority: CN
Inventors: 黄怡洁
Original assignee: Scenic Precise Element Inc
Current assignee: Scenic Precise Element Inc
Priority date: 2009-07-23
Filing date: 2009-07-23
Publication date: 2012-10-17
Anticipated expiration: 2029-07-23
Also published as: CN101963228A

Abstract

The invention relates to a cartridge type double-shaft seal which is mounted on a rotation axis of mechanical equipment. The cartridge type double-shaft seal comprises an axle sleeve which is sleeved on the rotation axis, a body group sleeved outside the axle sleeve, a first sealing ring group sleeved outside the axle sleeve, a delivery ring arranged outside the axle sleeve and a second sealing ring group arranged outside the axle sleeve and connected with the delivery ring. With the cartridge type double-shaft seal of the invention, a transmission component can be simplified to prevent elements from excessive friction; and in addition, the service life of the elements can be lengthened and the sealing and leakproof effects can be improved.

Description

Card box twin shaft envelope

Technical field

The present invention relates to a kind of simplified style drive mechanism of twin shaft envelope, particularly relate to a kind of card box twin shaft envelope that is applicable to the rotatingshaft of machinery.

Background technique

Gland seal device is to be applied in the axle joint sealing of rotary machine equipment and to be installed on the gap location of equipment wall surface and mandrel, is oozed out by the pivot-connecting position in order to avoid fluid or gas pressure in the reaction tank.The processing procedure fluid of particularly being carried when rotary machine equipment is volatile substance (VOC), or tool toxicity or tool corrosivity be maybe need do situation such as high temperature cooling the time, and this moment, gland seal device just needed to use the twin shaft envelope.

Like Fig. 1, shown in Figure 2; It is a kind of existing twin shaft seal structure; For TaiWan, China is announced " the clamping type gland seal device that rotary machine is used " novel patent case No. 459938; The gland seal device 2 that this case disclosed includes one and is sheathed on axle sleeve 21, on the axle 10 of rotary machine 1 and is sheathed on the outside and first swivel becket group 22, that be positioned at the axis hole 12 of rotary machine 1 of axle sleeve 21 versatilely to be sheathed on axle sleeve 21 versatilely outside and be positioned at axis hole 12 nearly end places and enclosing cover 24, that first axle collar 23, that is connected with the first swivel becket group 22 is locked on the rotary machine 1 and fixing first axle collar 23 of butt is installed in outside the axle sleeve 21 and is positioned at the second swivel becket group 25 of enclosing cover 24, reaches one and is placed on the axle sleeve 21 and is positioned at enclosing cover 24 outsides and is fixed in second axle collar 26 on the axle 10 jointly with axle sleeve 21.

This first swivel becket group 22 comprises that one is connected with first swivel becket 221, one first seat ring 222 on axle sleeve 21 by fixing pin 223, and an end butt first swivel becket 221 the other ends are then stretched the first butt ring 224 that places in first seat ring 222.And first axle collar 23 is close to this ora terminalis of the first swivel becket groups 22 and is provided with most spring 231 butts first seat ring 222 sides.Again; These enclosing cover 24 inner formation one provide axle sleeve 21 to run through through hole 241 wherein; And the containing groove 242 that contiguous first axle collar 23 places formation one is connected with through hole 241; Be provided with in addition on the enclosing cover 24 and connect to the inlet 243 of containing groove 242 from the outside and export 244, this inlet 243 and export 244 be connected isolated fluid catheter respectively input end and output terminal.

This second swivel becket group 25 comprise one be fixedly arranged on the axle sleeve 21 and be fixedly arranged on the axle sleeve 21 with axle sleeve 21 with second swivel becket 251, of axle 10 turns and an end be arranged in the through hole 241 of enclosing cover 24 and in addition end then be arranged in second seat ring 252 of containing groove 242; And an end is stretched and is placed second swivel becket 251 and one second butt ring 253 that the other end and second seat ring 252 connect; Be uniformly distributed with the recessed edge 255 of most water conservancy diversion on second swivel becket, 251 outer circumferential faces; Be equiped with most springs 254 between containing groove 242 sidewalls of second seat ring, 252 sides and enclosing cover 24, side then connects with second swivel becket 251 in addition.

In running, when the axle 10 of rotary machine 1 was rotated with transmission liquid, liquid can produce internal axial pressures to gland seal device 2; At this moment, can be via the spring 231 of 22 of first axle collar 23 in the gland seal device 2 and the first swivel becket groups, and the compressing of the spring 254 of 24 of the second swivel becket group 25 and enclosing covers; Make this first butt ring 224 and first swivel becket 221, second seat ring 252 and the second butt ring 253 constitute urgent subsides respectively and touch face; With this liquid internal pressure that contends with jointly, guarantee the sealed against leakage effect, and when the axle 10 of machinery 1 is rotated; Because of second swivel becket 251 of the second swivel becket group 25 can be with axle 10 rotations; And will produce an effect of stirring continuously to isolated liquid in recessed edge 255 rotations of the plural water conservancy diversion that second swivel becket, 251 side faces are laid, force the velocity of liquid assets of isolated liquid to be accelerated, and the isolated liquid of guiding is imported naturally swimmingly by inlet 243; Discharge by outlet 244 again; Make it under the state that does not need the isolated hydraulic coupling of extra increase, reach the cool cycles effect, simultaneously the poisonous fluid of ability separation process side.

Yet; Because of first swivel becket 221 is to be connected with on axle sleeve 21 by fixing pin 223; The end cap 211 of adding axle sleeve 21 bends inwards towards the lateral margin 212 of enclosing cover 24; Cooperate a packing ring 226 to place these lateral margin 212 inboards to be positioned on the axle sleeve 21 simultaneously and can be with axle sleeve 21 along with axle 10 rotations with radially urgent first swivel becket 221; So that the centrifugal action power that rotation the time is produced, and, cause breaking of first swivel becket 221 easily from the bidirection press effect of processing procedure side (lateral margin 212 of fixing pin 223 and end cap 211 just) with spring 231.In addition; Because of the first butt ring 224 is directly urgent in first seat ring 222; Make the sealing surface of this first butt ring 224 deform easily, for a long time down or when being used in high pressure, the first butt ring 224 is easily because of the driving fit really of sealing surface injustice at the centrifugal action of rotation; Even make sealing surface produce interference friction, cause the sealing failure.

In addition; This first seat ring 222 is to run through by the guide block that is formed at opposite side 225 further to stretch behind many elements such as being located at pressure ring 27, liner 28 to place the alignment grooves 232 that is formed on first axle collar, 23 inwalls; Because transmitting assemblies is too much; Also can produce the many interference phenomenon that can't expect, cause the not anti-beat of first seat ring 222, and then influence working life.

This shows that above-mentioned existing clamping type gland seal device obviously still has inconvenience and defective, and demands urgently further improving in structure and use.In order to solve the problem of above-mentioned existence; Relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly; But do not see always that for a long time suitable design is developed completion, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of card box twin shaft envelope of new structure, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.

Summary of the invention

The objective of the invention is to; Overcoming the defective that existing clamping type gland seal device exists, is to make it simplify transmitting assemblies and a kind of card box twin shaft envelope of new structure, technical problem to be solved are provided; And ability lift-off seal and leak preventing effect; And element can excessive interference or distortion, and can increase the service life, and is very suitable for practicality.

The object of the invention and solve its technical problem and adopt following technological scheme to realize.According to a kind of card box twin shaft envelope that the present invention proposes, on the rotatingshaft that is installed on a machinery, wherein this card box twin shaft package contains: an axle sleeve be sheathed on this rotatingshaft, and this axle sleeve definition has a processing procedure side and an atmospheric side; A body group; It is outside to be sheathed on this axle sleeve; And has one first body; And one second body of this first body of end butt, this first inner body wall offers at least one first locating slot towards the position of this processing procedure side direction, and this first inner body wall offers at least one caulking groove towards the position of this axle sleeve direction; This second body has a passage that supplies this rotatingshaft to stretch through, one and supplies the logical room of an isolated flow, first an isolated flow port that is revealed in outer circumferential face and is communicated with this room, reaches at least one and is opened in its inwall place and towards second locating slot of this processing procedure side direction; One first seal ring group; Being sheathed on this an axle sleeve outside and an end is connected with this first body; This first seal ring group has a compression ring being located at outside and first swivel becket that rotate with this axle sleeve of this axle sleeve, being connected to this first stationary ring, one side with one first stationary ring, of this first swivel becket of end butt; And at least one first elastic element of difference this compression ring of butt and this first body; And this first stationary ring is formed with at least one notch in this side towards this compression ring; And these compression ring two opposition sides are respectively equipped with a guide block corresponding to caulking groove and this notch of this first body, and respectively this guide block is to embed in corresponding caulking groove and the notch; A transfer rings is located at this axle sleeve outside and is positioned at this second body; And one second seal ring group; Be positioned at this axle sleeve outside and be connected with this transfer rings and this second body; This second seal ring group have one be connected with second swivel becket in this transfer rings and this shaft room, with one second stationary ring of this second swivel becket of end butt, and at least one stretches second locating slot that places this second body and second elastic element of this second stationary ring of butt and this second body respectively.

The object of the invention and solve its technical problem and also can adopt following technical measures further to realize.

Preferably, aforesaid card box twin shaft envelope, wherein this axle sleeve is provided with an end cap in this processing procedure side, and this end cap is towards this end of this atmospheric side and be formed with a groove seat.

Preferably, aforesaid card box twin shaft envelope, wherein this axle sleeve and this end cap are one-body molded.

Preferably, aforesaid card box twin shaft envelope, wherein this end cap is to be connected with this axle sleeve discretely.

Preferably, aforesaid card box twin shaft envelope, wherein this room of this body group is interior in being provided with a guide plate near this first isolated flow passage port.

Preferably, aforesaid card box twin shaft envelope, wherein this body group also has the second isolated flow port that at least one is revealed in this second body outer circumferential face and is communicated with this room.

Preferably, aforesaid card box twin shaft envelope, wherein the room of this body group is interior in being provided with a guide plate near this second isolated flow passage port.

Preferably, aforesaid card box twin shaft envelope, wherein first swivel becket of this first seal ring group is to be fixedly arranged on the end cap of this axle sleeve by at least one locating stud.

Preferably, aforesaid card box twin shaft envelope, wherein this card box twin shaft envelope also includes a black box for the second time, is arranged between this first stationary ring and this first body.

Preferably, aforesaid card box twin shaft envelope, wherein this, black box had second leakage washer of being located on this first stationary ring second time, and was located on this first stationary ring and a support ring that a side and this second leakage washer connect.

Preferably, aforesaid card box twin shaft envelope, wherein this second time black box support ring be to be directly molded on this first body with integral type.

Preferably, aforesaid card box twin shaft envelope, wherein the periphery wall of this transfer rings is provided with at least one guiding gutter.

Preferably, aforesaid card box twin shaft envelope, wherein the guiding gutter of this transfer rings is a shape in the shape of a spiral.

Preferably, aforesaid card box twin shaft envelope, wherein this second body is formed with interior concave space in defining contiguous this atmospheric side place of this vias inner walls.

Preferably, aforesaid card box twin shaft envelope, wherein this card box twin shaft envelope also includes one to be located at this axle sleeve outside and be positioned at this first intrinsic retaining ring, and these first elastic element two ends this compression ring of butt and this retaining ring respectively.

Preferably; Aforesaid card box twin shaft envelope; Wherein this card box twin shaft envelope also comprises a black box for the first time; This, black box was to be arranged on this groove seat of this end cap and to be sheathed on this first seal ring group first time, and this, black box had one first leakage washer first time, and first of connecting of a side and this first leakage washer completely cuts off packing ring.

Preferably, aforesaid card box twin shaft envelope, wherein this first body and this second body are to be integral type.

Preferably, aforesaid card box twin shaft envelope, wherein this second inner body wall place convexes with at least one positioning element, and this second stationary ring periphery has the caulking groove portion that at least one supplies this positioning element correspondence to set.

Preferably, aforesaid card box twin shaft envelope, wherein the outer circumferential face of the end cap of this axle sleeve is equipped with a spiral channel.

Invention compared with prior art has tangible advantage and beneficial effect.Know that by above for achieving the above object, the invention provides a kind of card box twin shaft envelope, it includes: an axle sleeve, be sheathed on this rotatingshaft, definition has a processing procedure side and an atmospheric side; One body group; It is outside to be sheathed on this axle sleeve; And has one first body; And second body of this first body of end butt, this first inner body wall offers at least one first locating slot towards the position of this processing procedure side direction, and this first inner body wall offers at least one caulking groove towards the position of this axle sleeve direction; This second body have one can supply this rotatingshaft to stretch through passage, the 1 first isolated flow port that can supply the logical room, of an isolated flow to be revealed in outer circumferential face and to be communicated with this room, reach and at least onely be opened in its inwall place and towards second locating slot of this processing procedure side direction; One first seal ring group; Being sheathed on this an axle sleeve outside and an end is connected with this first body; This first seal ring group has the compression ring of being located at this axle sleeve outside and can being connected to this first stationary ring, one side with first swivel becket of this axle sleeve rotation, with one first stationary ring, of this first swivel becket of end butt; And at least one first elastic element of difference this compression ring of butt and this first body; And this first stationary ring is formed with at least one notch in this side towards this compression ring, and these compression ring two opposition sides are respectively equipped with a guide block corresponding to caulking groove and this notch of this first body, respectively this guide block and can embed in corresponding caulking groove and the notch; One transfer rings is located at this axle sleeve outside and is positioned at this second body; And one second seal ring group; Be positioned at this axle sleeve outside and be connected with this transfer rings and this second body; This second seal ring group have one be connected with second swivel becket in this transfer rings and this shaft room, with one second stationary ring of this second swivel becket of end butt, and at least one second elastic element of stretching second locating slot that places this second body and can distinguishing this second stationary ring of butt and this second body.

By technique scheme, card box twin shaft envelope of the present invention has advantage and beneficial effect at least:

Can simplify transmitting assemblies, avoid element to produce excessively friction, can prolong the working life of element, effectively lift-off seal and leak preventing effect.

In sum, the present invention has apparent progress technically, and has tangible good effect, really is a novelty, progress, practical new design.

Above-mentioned explanation only is the general introduction of technological scheme of the present invention; Understand technological means of the present invention in order can more to know; And can implement according to the content of specification, and for let of the present invention above-mentioned with other purposes, feature and advantage can be more obviously understandable, below special act preferred embodiment; And conjunction with figs., specify as follows.

Description of drawings

Fig. 1 is an exploded perspective view, explains that TaiWan, China announces " the clamping type gland seal device that rotary machine is used " novel patent case No. 459938;

Fig. 2 is an assembled sectional view, aid illustration Fig. 1;

Fig. 3 is an exploded perspective view, and the element decomposition texture of first preferred embodiment of card box twin shaft envelope of the present invention is described, wherein the body group is decomposed;

Fig. 4 is an assembled sectional view, this first preferred embodiment of aid illustration;

Fig. 5 is an assembled sectional view, is second preferred embodiment of card box twin shaft envelope of the present invention;

Fig. 6 is a partial sectional view, is the 3rd preferred embodiment of card box twin shaft envelope of the present invention; And

Fig. 7 is a partial sectional view, aid illustration the 3rd preferred embodiment.

Embodiment

Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention; Below in conjunction with accompanying drawing and preferred embodiment; To the card box twin shaft envelope that proposes according to the present invention, its embodiment, structure, characteristic and effect thereof, specify as after.

Before the present invention is described in detail, be noted that in following description similar elements is to represent with identical numbering.

See also Fig. 3,4, first preferred embodiment of card box twin shaft envelope 3 of the present invention is in order to be installed on the machinery 4.In the present embodiment; This card box twin shaft envelope 3 comprise an axle sleeve 31, be sheathed on axle sleeve 31 outside body groups 32, be sheathed on the axle sleeve 31 first outside seal ring groups 33, be arranged at the outside black box 34 first time, of axle sleeve 31 for the second time black box 37, be located at the outside transfer rings 38 of this axle sleeve 31, and one to be positioned at this axle sleeve 31 outside and be connected with the second seal ring group 39 of this transfer rings 38.

This axle sleeve 31 is to be arranged on the rotatingshaft 41, and definition has a processing procedure side A towards the reaction tank direction of machinery 4, and an atmospheric side B in contrast to processing procedure side A.Axle sleeve 31 is provided with an end cap 311 in this processing procedure side A, and end cap 311 is towards this ora terminalis of this atmospheric side B and inwardly encircle the recessed groove seat 312 that is formed with.What specify is that axle sleeve 31 can be one-body molded with end cap 311 or be connected separably that in the present embodiment, this end cap 311 is to be shaped on the processing procedure side A of axle sleeve 31.

This body group 32 is to be sheathed on axle sleeve 31 outsides; Body group 32 has one first body 35; And one second body 36 of an end butt first body 35; This first body 35 is fastening combining with second body 36; This first body 35 in centre be axially arranged with one can supply axle sleeve 31 and rotatingshaft 41 to run through receiving bore 351, and this first body 35 in towards this side inwall of end cap 311 and be formed with one first terrace 352 and one second terrace, 353, the second terraces 353 on be interval with most first locating slots 354 and two caulking grooves 355 (this caulking groove 355 also can be more than two).And second body 36 has the passage 361, that axially runs through and can supply the logical room 362 of an isolated flow; And the one first isolated flow port 363 and 2 second isolated flow ports 364 (relation because of the visual angle only shows in the drawings) that are revealed in outer circumferential face and are communicated with room 362.In the present embodiment, also be provided with a guide plate 365 in completely cutting off flow port 364 places in the room 362 of this second body 36, but not as limit, guide plate 365 also can be located at first isolated flow port 363 places certainly near second.Two ends of this guide plate 365 have an inclined-plane respectively, are got into by the first isolated flow port 363 or are discharged by the second isolated flow port 364 so as to direct fluid, to promote radiating efficiency.

In addition, second body 36 is interval with most second locating slots 366 on the inwall that forms this passage 361, in addition concave space 367 in the nearly atmospheric side B of the inwall that defines this passage 361 place is formed with.

This first seal ring group 33 is to be arranged at axle sleeve 31 outsides; And have one be connected with on end cap 311 and can rotate synchronously with axle sleeve 31 by most locating studs 331 first swivel becket 332, be connected to the compression ring 334 of first stationary ring, 333 1 sides and most first elastic elements 335 with one first stationary ring 333, of an end butt first swivel becket 332.These first stationary ring, 333 opposite sides are provided with most notches 338, and compression ring 334 1 side correspondences respectively convex with a guide block 339 respectively in these notch 338 places, and each guide block 339 can be stretched respectively and place corresponding notch 338.Corresponding each caulking groove 355 place of these compression ring 334 opposite sides also convex with a guide block 330 respectively, and each guide block 330 can be stretched respectively and place corresponding caulking groove 355.These first elastic element, 335 1 ends are butt compression rings 334, and the other end is then stretched first locating slot 354 that places first body 35.

This, black box 34 was to be arranged at the groove seat 312 of axle sleeve end cap 311 and to be sheathed on the first seal ring group 33 first time; And this, black box 34 had one first leakage washer 341 first time, and a side and first leakage washer 341 connect one first completely cut off packing ring 342.In the present embodiment, the first isolated packing ring 342 is made by the adiabatic material like Furtulon, so as to avoiding sealing surface because of the heat that high-speed friction produced, is passed to first leakage washer 341 and causes overheating deforming.

This, black box 37 was to be located between first stationary ring 333 and first body 35 second time; For the second time black box 37 is as the sealing usefulness of processing procedure side A with 362 of rooms; Have axially to put side by side and establish and be positioned at one second leakage washer 371 and the support ring 372 on first terrace 352 of this first body 35; This support ring 372 is to supply second leakage washer 371 to install, and when avoiding this first stationary ring 333 and compression ring 334 to slide simultaneously folder takes place and decreases.

This transfer rings 38 have one can supply axle sleeve 31 and rotatingshaft 41 to place perforation 381, and mostly be located at the guiding gutters 383 on the periphery wall 382 at interval.

This second seal ring group 39 has that to be located at axle sleeve 31 outside and be arranged at one second stationary ring 392 that second swivel becket 391 on the transfer rings 38, a side and second swivel becket 391 connect, and most individual second elastic elements 393.Each second elastic element, 393 1 end is butt second stationary rings 392, and the other end is then stretched second locating slot 366 that places second body 36.

Continuous Fig. 3, Fig. 4 of consulting; Card box twin shaft envelope 3 of the present invention in the use; It is the axle joint sealing 42 that second body 36 is locked in rotary machine equipment 4 by bolt 51; This joint sealing 42 also is provided with the Seal cage 43 that is open shape and communicates with processing procedure side A, the processing procedure side A of aforementioned axle sleeve 31, first body 35 and be connected with all to stretch in first seal ring group 33 of the two and black box 34 for the first time and place sealing chamber 43.When startup rotatingshaft 41 is rotated start; Because axle sleeve 31 is fastening sheathed with rotatingshaft 41; Therefore, by the rotation of this rotatingshaft 4 interlock axle sleeve 31, first swivel becket 332, black box 34, second swivel becket 391 for the first time simultaneously, and component synchronization such as transfer rings 38 is rotated; Tool pressure in the processing procedure side A of machinery 4 can guarantee that machinery 4 reaches the sealed against leakage effect when carrying liquid.In addition; Because of transfer rings 38 is rotated with rotatingshaft 41 together with second swivel becket 391; So the said guiding gutter 383 that is laid on transfer rings 38 periphery walls 382 can be to completely cutting off the effect that liquid generation one is stirred continuously; Force isolated liquid to quicken to flow, and the isolated liquid of guiding imports, discharged by the second isolated flow port 364 naturally swimmingly by the first isolated flow port 363, make it under the state that is not needing the isolated hydraulic coupling of extra increase; Just can reach excellent cool cycles effect, can effectively completely cut off the poisonous fluid of processing procedure side simultaneously.

What specify is; During because of rotatingshaft 41 high-speed rotation; Can make this card box twin shaft envelope 3 produce the radial deflection phenomenons, this moment is by second body 36 concave space 367 in the nearly atmospheric side B of the inwall that defines this passage 361 place is formed with, and the space of second stationary ring, 392 skew activities can be provided; Avoiding second stationary ring 392 to damage, and then can prolong the working life of element because of long-time friction second body 36.Moreover; Card box twin shaft envelope 3 of the present invention is in design, and the first butt ring and first seat ring shown in will having now merge formation one first stationary ring 333, the stability in the time of not only increasing transmission; And can reduce transmitting assemblies quantity; Reduce unnecessary interference, and can increase the anti-pendulosity of first stationary ring 333, do not have problem on deformation.In addition; First stationary ring 333 of present embodiment is to adopt integral type to be shaped, and is to combine with urgent mode than the existing first butt ring with first seat ring, between two elements because of not having any Sealing or elastic element; If under high rotating speed of high temperature or long-time the use, the damaged leakage can be taken place; Therefore, the intensity of first stationary ring 333 of present embodiment is much larger than the existing first butt ring, and can significantly promote working life.

See also Fig. 5; It is second preferred embodiment of card box twin shaft envelope 3 of the present invention; This second preferred embodiment and first preferred embodiment are roughly the same, and wherein person shown in first preferred embodiment is applicable to general Seal cage 43 spaces (standard bored), and person shown in second preferred embodiment is then applicable to the machinery 4 with big Seal cage 43 spaces (big bored); The difference place is; Second preferred embodiment also includes the retaining ring 30 that is arranged in the receiving bore 351 of first body 35, defines the second above-mentioned terrace 353 by these retaining ring 30 1 sides, and said first locating slot 354 and said caulking groove (because of the view angular dependence is not given demonstration) then are arranged on second terrace 353 of retaining ring 30; Because drive connection is identical with above-mentioned first preferred embodiment, so repeat no more at this.In addition, in the present embodiment, this support ring 372 has more abundant space provides the subsides of second leakage washer 371 to touch, and therefore, this support ring 372 is to be directly molded on first body 35 and to be the design of integral type.

When assembling, be earlier this compression ring 334 to be inserted in first body 35, and said first elastic element 335 is to insert in the retaining ring 30; Again this retaining ring 30 is fixed at first body, 35 inwalls; To realize that compression ring 334, first elastic element 335, retaining ring 30 and first body 35 constitute the purpose of integral type transmitting assembliess, when maintenance, personnel need only the bolt 51 on removal second body 36 whereby; This card box twin shaft envelope 3 is withdrawed from by rotatingshaft 41; Decompose first,

second body

35,36, first body 35, retaining ring 30, compression ring 334 and first elastic element 335 are broken away from simultaneously in the lump, and the problem that first elastic element 335 is scattered can not take place during the course; And can adopt module type directly to change whole set of pieces; Even need not change just reusablely, not only save time of maintenance, can significantly save maintenance cost simultaneously.

See also Fig. 6; The 3rd preferred embodiment of card box twin shaft envelope 3 of the present invention; Roughly with preceding to take off embodiment identical, not existing together is that the outer circumferential face that is the end cap 311 of this axle sleeve 31 is equipped with a spiral channel 310, in addition; This spiral channel 310 is located on the end cap 311, also can be designed to structure as shown in Figure 7.And by aforementioned two kinds of designs of this preferred embodiment; Can be with the impurity particle that is produced in the whipping process, when this axle sleeve 31 rotates, be with in the lump by this spiral channel 310 and leave; Preventing the situation of each element cause clogging, and then reach better sealing leakage-proof effect.

In sum; Card box twin shaft envelope 3 of the present invention can be reached the simplification transmitting assemblies really by above-mentioned structure design, avoids element to produce excessive interference; More stable in the time of simultaneously guaranteeing to turn round; Make it under the state that does not need the isolated hydraulic coupling of extra increase, just can reach excellent sealing effect, and then can effectively completely cut off the poisonous fluid of processing procedure side A; In addition, more can prolong the working life of element, effective lift-off seal and leak preventing effect are so can reach the object of the invention really.

The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technological scheme scope of the present invention; When the technology contents of above-mentioned announcement capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be the content that does not break away from technological scheme of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technological scheme of the present invention according to technical spirit of the present invention.

Claims

1. a card box twin shaft seals, and on the rotatingshaft that is installed on a machinery, it is characterized in that this card box twin shaft package contains:

An axle sleeve is sheathed on this rotatingshaft, and this axle sleeve definition has a processing procedure side and an atmospheric side;

A body group; It is outside to be sheathed on this axle sleeve; And has one first body; And one second body of this first body of end butt, this first inner body wall offers at least one first locating slot towards the position of this processing procedure side direction, and this first inner body wall offers at least one caulking groove towards the position of this axle sleeve direction; This second body has a passage that supplies this rotatingshaft to stretch through, one and supplies the logical room of an isolated flow, first an isolated flow port that is revealed in outer circumferential face and is communicated with this room, reaches at least one and is opened in its inwall place and towards second locating slot of this processing procedure side direction;

One first seal ring group; Being sheathed on this an axle sleeve outside and an end is connected with this first body; This first seal ring group has a compression ring being located at outside and first swivel becket that rotate with this axle sleeve of this axle sleeve, being connected to this first stationary ring, one side with one first stationary ring, of this first swivel becket of end butt; And at least one first elastic element of difference this compression ring of butt and this first body; And this first stationary ring is formed with at least one notch in this side towards this compression ring; And these compression ring two opposition sides are respectively equipped with a guide block corresponding to caulking groove and this notch of this first body, and respectively this guide block is to embed in corresponding caulking groove and the notch;

A transfer rings is located at this axle sleeve outside and is positioned at this second body; And

One second seal ring group; Be positioned at this axle sleeve outside and be connected with this transfer rings and this second body; This second seal ring group have one be connected with second swivel becket in this transfer rings and this shaft room, with one second stationary ring of this second swivel becket of end butt, and at least one stretches second locating slot that places this second body and second elastic element of this second stationary ring of butt and this second body respectively;

Wherein this axle sleeve is provided with an end cap in this processing procedure side, and this end cap is towards this end of this atmospheric side and be formed with a groove seat;

Wherein this card box twin shaft envelope also comprises a black box for the first time; This, black box was to be arranged on this groove seat of this end cap and to be sheathed on this first seal ring group first time; And this, black box had one first leakage washer first time; Reach one the first isolated packing ring that a side and this first leakage washer connect, the said first isolated packing ring is processed by adiabatic material.

2. card box twin shaft envelope as claimed in claim 1 is characterized in that this axle sleeve and this end cap are one-body molded.

3. card box twin shaft envelope as claimed in claim 1 is characterized in that this end cap is to be connected with this axle sleeve discretely.

4. card box twin shaft envelope as claimed in claim 1 is characterized in that this room of this body group is interior in being provided with a guide plate near this first isolated flow passage port.

5. card box twin shaft envelope as claimed in claim 1 is characterized in that this body group also has the second isolated flow port that at least one is revealed in this second body outer circumferential face and is communicated with this room.

6. card box twin shaft envelope as claimed in claim 5 is characterized in that the room of this body group is interior in being provided with a guide plate near this second isolated flow passage port.

7. card box twin shaft envelope as claimed in claim 1, first swivel becket that it is characterized in that this first seal ring group is to be fixedly arranged on the end cap of this axle sleeve by at least one locating stud.

8. card box twin shaft envelope as claimed in claim 1 is characterized in that this card box twin shaft envelope also includes a black box for the second time, is arranged between this first stationary ring and this first body.

9. card box twin shaft envelope as claimed in claim 8; It is characterized in that this, black box had second leakage washer of being located on this first stationary ring second time, and be located on this first stationary ring and a support ring that a side and this second leakage washer connect.

10. card box twin shaft as claimed in claim 9 envelope is characterized in that the support ring of this of black box is to be directly molded on this first body with integral type second time.

11. card box twin shaft envelope as claimed in claim 1 is characterized in that the periphery wall of this transfer rings is provided with at least one guiding gutter.

12. card box twin shaft as claimed in claim 11 envelope, the guiding gutter that it is characterized in that this transfer rings are shapes in the shape of a spiral.

13. card box twin shaft envelope as claimed in claim 1 is characterized in that this second body is formed with interior concave space in defining contiguous this atmospheric side place of this vias inner walls.

14. card box twin shaft envelope as claimed in claim 1 is characterized in that this card box twin shaft envelope also includes one and is located at this axle sleeve outside and is positioned at this first intrinsic retaining ring, and this first elastic element two ends difference this compression ring of butt and this retaining ring.

15. card box twin shaft envelope as claimed in claim 1 is characterized in that this first body and this second body are to be integral type.

16. card box twin shaft envelope as claimed in claim 1 it is characterized in that this second inner body wall place convexes with at least one positioning element, and this second stationary ring periphery has the caulking groove portion that at least one supplies this positioning element correspondence to set.

17. card box twin shaft envelope as claimed in claim 1 is characterized in that the outer circumferential face of the end cap of this axle sleeve is equipped with a spiral channel.