CN107859742A - Seal ring structure and its extruder of application - Google Patents
Seal ring structure and its extruder of application Download PDFInfo
- Publication number
- CN107859742A CN107859742A CN201711396793.3A CN201711396793A CN107859742A CN 107859742 A CN107859742 A CN 107859742A CN 201711396793 A CN201711396793 A CN 201711396793A CN 107859742 A CN107859742 A CN 107859742A
- Authority
- CN
- China
- Prior art keywords
- sealing
- pit
- ring
- sealing ring
- side wall
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 130
- 239000000463 material Substances 0.000 claims abstract description 119
- 238000003756 stirring Methods 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000000843 powder Substances 0.000 abstract description 19
- 238000009792 diffusion process Methods 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000289 melt material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/12—Details
- F16J9/20—Rings with special cross-section; Oil-scraping rings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of seal ring structure and its extruder of application, the sealing ring has the center ring hole of axial direction, the sealing ring has the sealing side wall of radial arrangement, at least one pair of is provided with fan-shaped pit of gathering materials in the sealing side wall, the curved and all pit of gathering materials of the axis of the pit of gathering materials is arranged in the periphery of the center ring hole with identical yawing moment, the inner of the pit of gathering materials connects the center ring hole, and the depth of the pit of gathering materials gradually increases from outside to inside.So hydrodynamic pressure is produced by the pit of gathering materials in the sealing side wall to realize and will push to the center ring hole direction the material to gather materials in pit is collected into, prevent material powder or fused materials from realizing radial seal to surrounding diffusion leakage.
Description
Technical field
The present invention relates to a kind of seal ring structure and the extruder of the application sealing ring.
Background technology
Deep change is occurring for fast-developing modern industry, the use environment of mechanical sealing member, will to its operating mode
Ask harsher, the direction such as positive high speed, high pressure, low temperature, high vacuum is developed.By taking extruder as an example, the extruder belongs to modeling
Expect one kind of machinery.As shown in figure 1, the extruder includes the barrel 1 for storing material, set in the barrel 1
There is the rotor 2 for stirring material, also include the drive device 3 for driving the rotor 2 to rotate, the drive device 3
Output end 30 connect the axle stretch end 20 of the rotor 2, the output end 30 is rotatably arranged on the barrel 1 by bearing 4.
The material to be processed is usually material powder, is put into the barrel and is stirred together with water or other liquid as fused mass
Material.During stirring, the material powder or fused materials are very easy to by the rotor axle stretch end 20 and the material
Clearance leakage is outer to the barrel 1 between cylinder 1 and goes on the bearing 4, or even goes in the drive device 3, causes institute
The verticity for stating bearing 4 and the drive device 3 declines, or even damage.In order to solve the above problems, currently used solution
Scheme is the setting rotating seal ring 5 between the barrel 1 and the rotor axle stretch end 20.As shown in Fig. 2 the rotatory sealing
Ring 5 has outer ring skeleton 50 and the elastic seal ring 51 being arranged in the annular space of the outer ring skeleton 50.The outer shroud bone
Frame 50 also has the smooth sealing plane 501 radially extended.The rotating seal ring 5 is set on the rotor axle stretch end 20
On, the gap between the rotor axle stretch end 20 and the rotating seal ring 5 is carried out axially by the elastic seal ring 51
Sealing.The rotating seal ring 5 is also locked in the output end 30 by screw and to allow its sealing plane 501 to be close to described
Barrel 1.So by between the sealing plane 501 and the barrel 1 of the rotating seal ring 5 be close to carry out radial seal it is close
Envelope.But with the extension of the extruder usage time, abrasion occurs in the sealing plane 501 of the rotating seal ring 5, described
Aging also occurs in elastic seal ring 51, causes the gap between the rotor axle stretch end 20 and the rotating seal ring 5, and
Gap between the rotating seal ring 5 and the barrel 1 gradually increases.Material powder and fused materials in the barrel 1
It is very easy to pass to destroy the power in the even described drive device 3 of the bearing 4 to the barrel 1 is outer by clearance leakage
Moving part.
The content of the invention
In view of the shortcomings of the prior art, it is necessary to which the structure of seal ring structure is improved.In consideration of it, the present invention proposes
A kind of seal ring structure, the sealing ring have the center ring hole of axial direction, it is characterised in that the sealing ring has radial arrangement
Sealing side wall, be provided with least one pair of in fan-shaped pit of gathering materials, the scrobicula of gathering materials in the sealing side wall
The curved and all pit of gathering materials of the axis in hole is arranged in the outer of the center ring hole with identical yawing moment
Week, the inner of the pit of gathering materials connect the center ring hole, and the depth of the pit of gathering materials gradually increases from outside to inside.
Wherein, the central axis of the center ring hole is axially disposed, and the sealing side wall is radially arranged, so,
The central axis of the center ring hole and the sealing side wall are mutually perpendicular to arrangement.
Wherein, the sealing side wall is the sealing surface for being bonded forming face sealing with its component.
Wherein, the pit of gathering materials is arranged on the scrobicula chamber in the sealing side wall, can be used for collecting leakage
Material powder or fused materials onto the sealing side wall, and connect the center by the inner of the pit of gathering materials
The structure of annular distance, allow being collected into the material powder to gather materials in pit or fused materials and can enter the center ring hole
It is interior and be smoothly discharged to the pit of gathering materials, stagnated for a long time in the scrobicula so as to reduce the material powder or fused materials
The capacity gauge for pit of gathering materials described in intracavitary weakening, so described pit of gathering materials also just can continuously collect raw material
Powder or fused materials.On this basis, the axis of the pit of gathering materials is curved, and the depth of the pit of gathering materials is from outer
Inwardly gradually increase, it is described so when the sealing ring gathers materials the opposite direction rotation of the yawing moment of pit described in
Pit of gathering materials, which can produce hydrodynamic pressure, will be collected into the material to gather materials in pit to the center ring hole direction
Push.
As can be seen here, compared with prior art, the sealing ring for being provided with the pit of gathering materials and tradition in the present invention
Sealing ring is compared, and has following beneficial effect：Sealing ring described first has sealing side wall, by the sealing side wall
It can be used for other component forming face surface seal structures.And when it is described sealing side wall occur wearing and cause the sealing ring with
When there is gap between other described components, hydrodynamic can be produced by the pit of gathering materials in the sealing side wall again
Power, which is realized, to be pushed the material to gather materials in pit is collected into the center ring hole direction, prevents material powder or molten
Melt material to surrounding diffusion leakage, realize radial seal.
Further technical scheme is also possible that to be provided with the sealing side wall of the sealing ring gathers materials described in three
Pit.So, hydrodynamic pressure caused by the sealing ring rotation can be optimized.
Further technical scheme, which is also possible that on the sealing ring, is additionally provided with axially extending connecting hole, described
Connecting hole and the left and right arrangement of pit of gathering materials.So, fastener can pass through the connecting hole that the sealing ring is carried out
Locking.
Further technical scheme is also possible that is provided with sealing screw groove in the hole side wall of the center ring hole.This
Sample, in specific application, when the sealing ring is set in shaft member by the center ring hole and is rotated around the shaft member,
Under the driving of the sealing screw groove, material powder or fused materials in the sealing screw groove will produce pumping head,
When the pressure balance of the pumping head and sealed medium, with regard to sealed medium can be prevented from the sealing ring and the axle
Clearance leakage between part comes out, so as to realize the function of axial seal.
The present invention also proposes the extruder of the application sealing ring, it is characterised in that including barrel and the sealing ring,
The rotor for stirring material is provided with the barrel, the sealing ring is set on the rotor by the center ring hole
On axle stretch end and allow its seal side wall be close on the barrel or be close on the cushion block being arranged on the barrel so as to
Movable sealing structure can be formed between the sealing ring and the barrel or cushion block, it is described during dynamic sealing is carried out
The direction of rotation of sealing ring is opposite with the yawing moment of the pit of gathering materials to be collected into the pit of gathering materials so as to handle
Interior material pushes to the center ring hole direction.Wherein, the axle stretch end of the rotor is the section area for setting nonextruding working face
Domain, the power set of the rotor rotation are driven for connecting.So, by the sealing side wall of the sealing ring and thereon
The pit of gathering materials carries out dynamic radial seal, so as to prevent the material in the barrel from easily passing through the sealed sides
Gap between wall and the barrel or cushion block leaks out.
It because the present invention has These characteristics and advantage, may apply on sealing ring, be also applied to described for this
On the movable sealing structure of extruder.
Brief description of the drawings
Fig. 1 is the sealed structural representation of extruder of the prior art；
Fig. 2 is the planar structure schematic diagram of sealing ring of the prior art；
Fig. 3 is the dimensional structure diagram to the sealing ring of application technical solution of the present invention；
Fig. 4 is the main structure diagram of the sealing ring shown in Fig. 3；
Fig. 5 is the cross section structure diagram in A-A directions in Fig. 4；
Fig. 6 is the structural representation using the main view direction of the extruder using movable sealing structure of technical solution of the present invention；
Fig. 7 is the cross section structure diagram in B-B directions in Fig. 6；
Fig. 8 is C portions mplifying structure schematic diagram in Fig. 7.
Embodiment
Below in conjunction with the accompanying drawings to the extruder of the sealing ring using technical solution of the present invention and the application sealing ring
Structure is further described.
It is the structural representation of sealing ring 5 as shown in Fig. 3, Fig. 4 and Fig. 5, the sealing ring 5 has the center ring hole of axial direction
53, the sealing ring 5 has the sealing side wall 50 of radial arrangement, and three are provided with sector in the sealing side wall 50
Pit 51 of gathering materials, certainly in other implementations, a pair or more of the pit 51 of gathering materials can also be set
It is and feasible.The pit 51 of gathering materials that the axis of the pit 51 of gathering materials is curved and all is deflected with identical
Direction is arranged in the periphery of the center ring hole 53, and the inner of the pit 51 of gathering materials connects the center ring hole 53, described
The depth of pit of gathering materials 51 gradually increases from outside to inside.
Wherein, the central axis of the center ring hole 53 is axially disposed, and the sealing side wall 50 is radially arranged.This
Sample, the central axis of the center ring hole 53 and the sealing side wall 50 are mutually perpendicular to arrangement.
Wherein, the sealing side wall 50 is the sealing surface for being bonded forming face sealing with its component.
Wherein, the pit 51 of gathering materials is arranged on the scrobicula chamber in the sealing side wall 50, can be used for collecting
The material powder or fused materials leaked into the sealing side wall 50, and connected by the inner of the pit 51 of gathering materials
The structure of the center ring hole 53, allow be collected into the material powder to gather materials in pit 51 or fused materials enter it is described
The pit 51 of gathering materials smoothly is discharged in center ring hole 53, so as to reduce the material powder or fused materials product for a long time
It is stagnant weaken in the scrobicula intracavitary described in gather materials the capacity gauge of pit 51, so described in gather materials pit 51 also just being capable of source
Constantly collect material powder or fused materials in source.On this basis, the axis of the pit 51 of gathering materials is curved, the collection
The depth of material pit 51 gradually increases from outside to inside, so when deflection side of the sealing ring 5 along the pit 51 of gathering materials
To opposite direction rotate when, the pit 51 of gathering materials, which can produce hydrodynamic pressure, will be collected into the pit 51 of gathering materials
Interior material pushes to the direction of center ring hole 53.
As can be seen here, compared with prior art, the sealing ring 5 for being provided with the pit 51 of gathering materials in the present invention is with passing
System sealing ring is compared, and has following beneficial effect：Sealing ring 5 described first has sealing side wall 50, by the sealing
Side wall 50 can be used for other component forming face surface seal structures.And when the sealing side wall 50 occurs wearing and causes institute
State when there is gap between sealing ring 5 and other described components, again can be by the scrobicula of gathering materials in the sealing side wall 50
The generation hydrodynamic pressures of hole 51 are realized being collected into the material to gather materials in pit 51 to the direction of center ring hole 53
Push, material powder or fused materials are prevented to realize radial seal to surrounding diffusion leakage.
Axially extending connecting hole 52, the connecting hole 52 and the scrobicula of gathering materials are additionally provided with the sealing ring 5
Cheat 51 left and right arrangements.Fastener can lock the sealing ring 5 through the connecting hole 52.In the center ring hole
Sealing screw groove 54 is provided with 53 hole side wall.In specific application, when the sealing ring 5 passes through the center ring hole 53
Be set in shaft member and around the shaft member rotate when, under the driving of the sealing screw groove 54, in the sealing screw groove 54
Material powder or fused materials will produce pumping head, when the pressure balance of the pumping head and sealed medium, just
Sealed medium can be prevented to be come out from the clearance leakage between the hole side wall and the shaft member of the sealing ring 5, so as to realize axle
To the function of sealing.
As shown in Fig. 6, Fig. 7 and Fig. 8, the present invention also proposes the extruder 100 of the application sealing ring 5.The extruder
100 include barrel 1 and the sealing ring 5, and the tail end of the barrel 1 is provided with ring flange 11, is provided with the barrel 1
For stirring the rotor 2 of material.Power set 3 are provided with the rear of the barrel 1, the power set 3 include motor 31
And the decelerator 32 of the output end of the connection motor 31.The decelerator 32 has the first output end 321 and the second output
End 322.The axle stretch end 20 of the rotor 2 stretches to the barrel 1 is outer to be connected with first output end 321.Described
Two output ends 322 are rotatably arranged on by bearing 4 in the central disk hole of the ring flange 11.The sealing ring 5 is by described
Centre annular distance 53 is set on the axle stretch end 20 of the rotor 2 and allows it to seal side wall 50 and is close on the barrel 1, fastens
The connecting hole 52 of part through the sealing ring 5 is connected to the sealing ring 5 in second output end 322.In order to reduce
The abrasion of barrel 1 is stated, cushion block can also be provided with the barrel 1, the sealing side wall 50 is close on the cushion block.
Under the driving of the power set 3, the direction of rotation of the sealing ring 5 is opposite with the yawing moment of the pit 51 of gathering materials
So as to realize that radial direction is dynamic close to the direction of center ring hole 53 push the material to gather materials in pit 51 is collected into
Envelope.In another embodiment, the power set 3 can only set an output end and allow the output end to connect institute
Rotor 2 is stated, the sealing ring 5 is connected on the rotor 2.So, the sealing ring 5 can rotate together with the rotor 2
And simplify the structure of power set 3.
As shown in figure 8, except being provided with the sealing screw groove 54 in the hole side wall of the center ring hole 53, described
Pumping force can be produced so as in the center ring hole 53 by being additionally provided with the axle side wall of the corresponding hole side wall of axle stretch end 20
The sealing screw groove 21 that is pushed to the direction of barrel 1 of material.It is described under the driving of the sealing screw groove (54 and 21)
Material powder or fused materials in sealing screw groove (54 and 21) will produce pumping head, when the pumping head and the material
When the pressure of the material powder sealed or fused materials in cylinder 1 reaches poised state, the raw material powder sealed can be just prevented
The clearance leakage of end or fused materials between the hole side wall of the sealing ring 5 and the axle side wall of the axle stretch end 20 is to the material
Cylinder 1 is outer so as to realizing axial dynamic sealing.In addition, the sealing spiral shell on sealing screw groove 54 and the axle side wall in the hole side wall
Spin slot 21, which can act synergistically, improves pumping force, so as to greatly improve sealing effectiveness.In this case, it is possible to shorten institute
State sealing screw groove（54、21）Axial length and reduce space-consuming so that the structure setting of the extruder, which obtains, more steps up
Gather.Certainly, can be only in the hole side wall of the center ring hole 53 in the case where the extruder has sufficient installation space
Or the sealing screw groove (54 or 21) is set in the axle side wall of the axle stretch end 20.
In summary, between the sealing ring 5 and the barrel 1 can form dynamic radial seal, in the sealing ring 5
The axial dynamic sealing that can be formed between the axle stretch end 20 of the rotor 2, so as to well to the thing in the barrel 1
Material, which carries out dual-seal, prevents material from leakage from out damaging bearing 4 or the power set 3.Because the present invention has These characteristics
And advantage, it may apply to for this on movable sealing structure of extruder.
Claims (5)
1. seal ring structure, the sealing ring has the center ring hole of axial direction, it is characterised in that the sealing ring has radial direction cloth
The sealing side wall put, at least one pair of is provided with the sealing side wall in fan-shaped pit of gathering materials, it is described gather materials it is shallow
The curved and all pit of gathering materials of the axis of pit is arranged in the center ring hole with identical yawing moment
Periphery, the inner of the pit of gathering materials connect the center ring hole, and the depth of the pit of gathering materials gradually increases from outside to inside
Greatly.
2. sealing ring according to claim 1, it is characterised in that be provided with three in the sealing side wall of the sealing ring
Gather materials described in bar pit.
3. sealing ring according to claim 1 or 2, it is characterised in that be additionally provided with the sealing ring axially extending
Connecting hole, the connecting hole and the left and right arrangement of pit of gathering materials.
4. sealing ring according to claim 1 or 2, it is characterised in that be provided with the hole side wall of the center ring hole
Sealing screw groove.
5. the extruder of the sealing ring described in application any one of claims 1 to 3, it is characterised in that including barrel and described close
Seal ring, is provided with the rotor for stirring material in the barrel, and the sealing ring is set on institute by the center ring hole
State on the axle stretch end of rotor and allow it to seal side wall and be close on the barrel or be close to the pad being arranged on the barrel
So as to form movable sealing structure between the sealing ring and the barrel or cushion block on block, the process of dynamic sealing is being carried out
In, the direction of rotation of the sealing ring is opposite with the yawing moment of the pit of gathering materials to be collected into described gather materials so as to handle
Material in pit pushes to the center ring hole direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711396793.3A CN107859742B (en) | 2017-12-21 | 2017-12-21 | Sealing ring structure and extruder applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711396793.3A CN107859742B (en) | 2017-12-21 | 2017-12-21 | Sealing ring structure and extruder applying same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107859742A true CN107859742A (en) | 2018-03-30 |
| CN107859742B CN107859742B (en) | 2024-06-11 |
Family
ID=61706918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711396793.3A Active CN107859742B (en) | 2017-12-21 | 2017-12-21 | Sealing ring structure and extruder applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107859742B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370483A (en) * | 2019-08-27 | 2019-10-25 | 青岛科技大学 | A kind of closed-smelting machine rotor sealing structure |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507498A (en) * | 1993-10-13 | 1996-04-16 | Synergy Extrusion Technologies, Inc. | Sealing device for polymer filtration apparatus |
| US20050006850A1 (en) * | 2003-05-05 | 2005-01-13 | Gerold Barth | Shaft of a shredding device and a shredding device |
| CN101187425A (en) * | 2006-11-16 | 2008-05-28 | 比亚迪股份有限公司 | Dynamic seal device |
| CN101234526A (en) * | 2008-03-05 | 2008-08-06 | 大连橡胶塑料机械股份有限公司 | Sealing device for extrusion machine screw rod tail |
| CN101846143A (en) * | 2010-06-23 | 2010-09-29 | 北京理工大学 | Seal ring with even-depth spiral groove on end face |
| CN201665646U (en) * | 2009-12-29 | 2010-12-08 | 天津东洋油墨有限公司 | Extruder sealing device for ink making |
| CN103090006A (en) * | 2013-02-04 | 2013-05-08 | 北京理工大学 | Spiral groove rotary sealing ring with cone-shaped cross section and used on vehicle |
| CN106763778A (en) * | 2016-12-12 | 2017-05-31 | 昆明理工大学 | A kind of upstream pumping mechanical seal ring with multiple coil groove |
| CN206361151U (en) * | 2016-12-12 | 2017-07-28 | 昆明理工大学 | A kind of mechanical seal ring with many zigzag helicla flutes |
| CN207762239U (en) * | 2017-12-21 | 2018-08-24 | 广东星联科技有限公司 | Seal ring structure and its extruder of application |
-
2017
- 2017-12-21 CN CN201711396793.3A patent/CN107859742B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507498A (en) * | 1993-10-13 | 1996-04-16 | Synergy Extrusion Technologies, Inc. | Sealing device for polymer filtration apparatus |
| US20050006850A1 (en) * | 2003-05-05 | 2005-01-13 | Gerold Barth | Shaft of a shredding device and a shredding device |
| CN101187425A (en) * | 2006-11-16 | 2008-05-28 | 比亚迪股份有限公司 | Dynamic seal device |
| CN101234526A (en) * | 2008-03-05 | 2008-08-06 | 大连橡胶塑料机械股份有限公司 | Sealing device for extrusion machine screw rod tail |
| CN201665646U (en) * | 2009-12-29 | 2010-12-08 | 天津东洋油墨有限公司 | Extruder sealing device for ink making |
| CN101846143A (en) * | 2010-06-23 | 2010-09-29 | 北京理工大学 | Seal ring with even-depth spiral groove on end face |
| CN103090006A (en) * | 2013-02-04 | 2013-05-08 | 北京理工大学 | Spiral groove rotary sealing ring with cone-shaped cross section and used on vehicle |
| CN106763778A (en) * | 2016-12-12 | 2017-05-31 | 昆明理工大学 | A kind of upstream pumping mechanical seal ring with multiple coil groove |
| CN206361151U (en) * | 2016-12-12 | 2017-07-28 | 昆明理工大学 | A kind of mechanical seal ring with many zigzag helicla flutes |
| CN207762239U (en) * | 2017-12-21 | 2018-08-24 | 广东星联科技有限公司 | Seal ring structure and its extruder of application |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370483A (en) * | 2019-08-27 | 2019-10-25 | 青岛科技大学 | A kind of closed-smelting machine rotor sealing structure |
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| Publication number | Publication date |
|---|---|
| CN107859742B (en) | 2024-06-11 |
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