CN104712766A - Labyrinth type bearing closing device - Google Patents
Labyrinth type bearing closing device Download PDFInfo
- Publication number
- CN104712766A CN104712766A CN201510100910.1A CN201510100910A CN104712766A CN 104712766 A CN104712766 A CN 104712766A CN 201510100910 A CN201510100910 A CN 201510100910A CN 104712766 A CN104712766 A CN 104712766A
- Authority
- CN
- China
- Prior art keywords
- bearing
- ring
- rotating shaft
- obturator
- rotating ring
- 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
- 239000000843 powder Substances 0.000 claims description 13
- 230000000295 complement effect Effects 0.000 claims description 12
- 238000005461 lubrication Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 239000000314 lubricant Substances 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 5
- 230000001050 lubricating effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 36
- 230000003068 static effect Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000009837 dry grinding Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003971 tillage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4472—Labyrinth packings with axial path
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
- A01B33/08—Tools; Details, e.g. adaptations of transmissions or gearings
- A01B33/082—Transmissions; Gearings; Power distribution
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Power Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses a labyrinth type bearing closing device which comprises a rotating shaft, a bearing, a static ring, a movable ring, a bearing cover, a bearing base, a transmission gear and a spiral drill bit. One end of the rotating shaft is driven by the transmission gear, and the other end of the rotating shaft is fixedly connected with the spiral drill bit. The bearing is fixed to the rotating shaft. The static ring is fixedly connected with the bearing cover. The movable ring is fixed to the rotating shaft in the radial direction and installed on the outer side of an inner ring of the bearing in an abutting-against mode. The matching face of the movable ring and the static ring is provided with one or more folded curve paths. The movable ring and the static ring are matched to form one-ring or multi-ring labyrinth gaps. The bearing cover is fixed to the bearing base. By means of the labyrinth type bearing closing device, the labyrinth gaps are formed between the movable ring and the static ring, the matching precision is high, and external sundries can not enter the bearing easily, so that the sealing property is good, and the service life is long.
Description
Technical field
The present invention relates to mechanical seal field, particularly a kind of mazy type bearing obturator for powder ridge machinery of deep ploughing.
Background technique
Be in the Chinese invention patent application of CN 101971723 A at publication number, disclose a kind of rotary-grinding type multifunctional machine for deep tillage of powder ridge.In the mechanical transmission of such agricultural machinery, mechanical lubrication position such as bearing, transmission case gear etc. need to be lubricated by lubricating oil mostly, with prevent overheated, dry grinding cause transmission component to damage.For ensureing that lubricating oil does not leak, need to take various forms to seal.Cause the fundamental cause of leakage to be the pressure difference or the flowing of concentration official post fluid that seal both sides inside and outside position, and sealing surface has gap, fluid is overflowed.For dissimilar sealing, action principle is different.Static seal relies on to close gap between junction plane to realize seal action; And motive sealing just can not rely on merely the gap between closed junction plane to realize sealing, because gap is tightr, surface friction drag during effects on surface relative movement is just larger, junction plane is caused to generate heat, sealing was lost efficacy very soon, the main points of therefore motive sealing action principle both can keep sealing and don't produce larger surface friction drag, comprises the pressure difference of reduction sealing both sides and make to keep fluid lubrication film etc. between junction plane.Rotary seal between the turnery drill bit of this machinery and transmission device uses oil sealing sealing now in a large number, because oil sealing sealing is contact-type, during rotation, oil sealing can generate heat, wear and tear, so the oil sealing sealing life-span is short, particularly running shaft rigidity not and under producing bending operating mode, oil sealing sealing is leakage of oil very easily.When agricultural mechanical operation, the foreign material such as water, mud, sand, airborne dust easily enter bearing, cause bearing and damage of components.Require because agricultural operation is ageing high, and damage parts dismounting and change and can cause waste man-hour, affect agricultural production.
Summary of the invention
The technical problem to be solved in the present invention is to provide one to be not easy ageing failure in the presence of a harsh environment, the mazy type bearing obturator of good sealing effect, long service life.
For achieving the above object, the technical solution used in the present invention is:
A kind of mazy type bearing obturator, it is characterized in that, comprise rotating shaft, bearing, stationary ring, rotating ring, bearing cap, bearing support, driving gear, augers, described rotating shaft one end is driven by driving gear, the other end is fixedly connected with augers, described bearing is fixed in described rotating shaft, described stationary ring is fixedly connected with described bearing cap, described rotating ring radial direction to be fixed in rotating shaft and to push against and is installed on outside bearing inner race, described rotating ring and stationary ring fitting surface be provided with a folding or roll over more be folded to Qu Lu, the two complements each other to form the labyrinth gap of a ring or many rings, described bearing cap is fixed on bearing support.Such design, rotating ring, stationary ring can be made away from bearing and machine internal part, reduce the adverse effect of the heat that brings of part time job to sealing to greatest extent, simultaneously, labyrinth gap makes outside foreign material be difficult to enter Bearing inner, thus has good sealing and permanent working life.
Preferably, described augers comprises screw axis, helical blade, apex point and is arranged at the coupling at screw axis top, helical blade is arranged on screw axis, helical blade outward edge is provided with powder ridge cutter, the number of degrees of described powder ridge cutter and its dihedral angle formed in the plane of the point of attachment of helical blade are greater than 90 degree, be less than 180 degree, described rotating shaft and described coupling are fixedly connected.Powder ridge machinery in the process of walking, because the number of degrees of powder ridge cutter and its dihedral angle formed in the plane of the point of attachment of helical blade are greater than 90 degree, be less than 180 degree, be conducive to abundant the contact with soil of powder ridge drill bit to carry out cutting and stirring, add the cutting power of drill bit and the soil crushing effect of powder ridge machinery, make powder ridge machinery can meet the needs of agricultural production further.
Preferably, described rotating ring, stationary ring all adopt high hardness wear-resisting material, even if when device inside enters impurity, rotating ring and stationary ring also can not produce wearing and tearing because of the intervention of impurity, thus have very long working life.
Preferably, described bearing support is provided with the oil nozzle to inside cavity filling lubricant medium, is convenient to supplement filling lubricant medium to seal arrangement inside cavity in time, prevents because causing dry grinding because lubricant medium runs off after operate longer.
Preferably, described bearing lubrication adopts lubricating grease.Lubricating grease had both had good lubrication effect, was also convenient to maintain good sealing in the labyrinth gap between ring, stationary ring.
Preferably, the internal diameter of described rotating ring and the external diameter of rotating shaft closely supporting, rotating ring by frictional force clamping be fixed in rotating shaft.This means of fixation, structure is simple, easily manufactured, is convenient to manufacture and design.
As the first improved procedure of the present invention, the labyrinth gap that described rotating ring and stationary ring complement each other to form is staircase curve vertically.This sealing means mounting or dismounting are convenient, and bearing cap must subdivision.
As the second improved procedure of the present invention, the labyrinth gap that described rotating ring and stationary ring complement each other to form is concavo-convex curve radially.Equally, this sealing means mounting or dismounting are convenient, and bearing cap must subdivision.
As the third improved procedure of the present invention, the labyrinth gap that described rotating ring and stationary ring complement each other to form is " N " shape curve vertically.This sealing means can do certain swing around bearing centre, is applicable to axle and swings larger place, as selfaligning bearing supporting.
As the 4th kind of improved procedure of the present invention, the labyrinth gap that described rotating ring and stationary ring complement each other to form is concavo-convex curve vertically.This sealing means takes up room little, and cost is low, is applicable to batch production, and the concavo-convex curve arranged is more, and sealing effect is better.
In sum, by mazy type bearing obturator of the present invention, during axis of rotation, because rotating ring is fastened in rotating shaft, bearing is positioned at the inside cavity that bearing support and bearing cap form, and has lubricant medium lubrication, does not have relative movement, good reliability; Relative movement is not had, good reliability between stationary ring and bearing cap, the several part of bearing support; Have the rotating ring of relative movement and stationary ring all to adopt high hardness wear-resisting material, form labyrinth gap between the two, quality of fit is high, and outside foreign material are difficult to enter Bearing inner, thus has good sealing and permanent working life.
Accompanying drawing explanation
Fig. 1 is the application scenarios schematic diagram of mazy type associated sealing arrangement for bearings of the present invention;
Fig. 2 is the I-I part section structural representation of the first embodiment of mazy type associated sealing arrangement for bearings of the present invention;
Fig. 3 is the I-I part section structural representation of mazy type associated sealing arrangement for bearings the second embodiment of the present invention;
Fig. 4 is the I-I part section structural representation of the third embodiment of mazy type associated sealing arrangement for bearings of the present invention;
Fig. 5 is the I-I part section structural representation of mazy type associated sealing arrangement for bearings of the present invention 4th kind of embodiment.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are further elaborated.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
Embodiment one:
With reference to Fig. 1, shown in Fig. 2, a kind of mazy type bearing obturator, comprise rotating shaft 1, bearing 8, stationary ring 4, rotating ring 5, bearing cap 6, bearing support 7, driving gear 1, augers 2, described rotating shaft 3 one end is driven by driving gear 1, the other end is fixedly connected with augers 2, described bearing 8 is fixed in described rotating shaft 3, described stationary ring 3 is fixedly connected with described bearing cap 6, described rotating ring 5 radial direction to be fixed in rotating shaft 3 and to push against and is installed on outside bearing 8 inner ring, described rotating ring 5 and stationary ring 4 fitting surface be provided with a folding or roll over more be folded to Qu Lu, the two complements each other to form the labyrinth gap of a ring or many rings, described bearing cap 6 is fixed on bearing support 7.Such design, rotating ring 5, stationary ring 4 can be made away from bearing 8 and machine internal part, reduce the adverse effect of the heat that brings of part time job to sealing to greatest extent, simultaneously, labyrinth gap makes outside foreign material be difficult to enter seal chamber inside, thus has good sealing and permanent working life.
Described augers 2 comprises screw axis, helical blade, apex point and is arranged at the coupling at screw axis top, helical blade is arranged on screw axis, helical blade outward edge is provided with powder ridge cutter, the number of degrees of described powder ridge cutter and its dihedral angle formed in the plane of the point of attachment of helical blade are greater than 90 degree, be less than 180 degree, described rotating shaft and described coupling are fixedly connected (not shown).
Described rotating ring 5, stationary ring 4 all adopt high hardness wear-resisting material.Described bearing support 7 is provided with the oil nozzle (not shown) to inside cavity filling lubricant medium.Described bearing 8 adopts grease lubrication, and lubricating grease fills in whole seal chamber inner, has both had good lubrication effect, is also convenient to maintain good sealing in the labyrinth gap between ring, stationary ring.The internal diameter of described rotating ring 5 and the external diameter of rotating shaft 3 closely supporting, rotating ring 5 by frictional force clamping be fixed in rotating shaft 3.
With reference to shown in Fig. 2, the labyrinth gap that described rotating ring 5 and stationary ring 4 complement each other to form is staircase curve vertically.The axially stepped increase towards left side of described rotating ring 5 external diameter, the internal diameter stepped increase thereupon of described stationary ring 4.Described bearing cap 6 and stationary ring 4 must subdivisions, are overall structure.Not shown in the figures, described rotating ring 5 high order end also can arrange hold-doun nut, the displacement to the left of anti-stop ring 5.
In addition, described rotating ring 5 also can be set to that external diameter is axially stepped towards left side to diminish, and the internal diameter of described stationary ring 4 is thereupon stepped to diminish.
Embodiment two:
With reference to shown in Fig. 3, difference is compared with embodiment one, and in the present embodiment, the labyrinth gap that described rotating ring 15 and stationary ring 14 complement each other to form is concavo-convex curve radially.Described rotating ring 15 is radially provided with multiple concavo-convex alternate ring structure, and equally, what the stationary ring 14 on the right side of rotating ring 15 matched with rotating ring 15 is provided with the alternate ring structure of multiple convex-concave.Described bearing cap 16 and stationary ring 14 must subdivisions, are overall structure.Described rotating ring 15 high order end is provided with hold-doun nut 19, the displacement to the left of anti-stop ring 15.
Embodiment three:
With reference to shown in Fig. 4, difference is compared with embodiment one, and in the present embodiment, the labyrinth gap that described rotating ring 25 and stationary ring 24 complement each other to form is " N " shape curve vertically.Described rotating ring 25 is provided with multiple concavo-convex alternate ring structure vertically, and the section of each bulge loop is left low right high oblique line.Equally, what the stationary ring 24 outside rotating ring 25 matched with rotating ring 25 is provided with multiple concavo-convex alternate ring structure, and the oblique line of stationary ring 24 each bulge loop section is parallel with the oblique line of rotating ring 25 bulge loop section, has very little gap.Described rotating ring 25 high order end is provided with hold-doun nut 29, the displacement to the left of anti-stop ring 25.
Embodiment four:
With reference to shown in Fig. 5, difference is compared with embodiment one, and in the present embodiment, the labyrinth gap that described rotating ring 35 and stationary ring 34 complement each other to form is concavo-convex curve vertically.Described rotating ring 35 by several sections is vertically
the hollow band of column of shape combines, and described stationary ring 34 by several sections is matingly
the hollow band of column of shape combines.The external diameter of the hollow band of column of stationary ring 34 is clamped on the internal diameter of bearing cap 36.During installation, bearing cap 36 after bearing support 37 is fixing, first to install a rotating ring 35 by fastening piece
the hollow band of column of shape, then a stationary ring 34 is installed
the hollow band of column of shape, by that analogy.Finally, described rotating ring 35 high order end is provided with hold-doun nut 39, the displacement to the left of anti-stop ring 35; Described stationary ring 34 high order end is provided with externally threaded hold-doun nut 30, prevents stationary ring 34 displacement to the left.
It is last it is noted that the above embodiment is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a mazy type bearing obturator, it is characterized in that, comprise rotating shaft, bearing, stationary ring, rotating ring, bearing cap, bearing support, driving gear, augers, described rotating shaft one end is driven by driving gear, the other end is fixedly connected with augers, described bearing is fixed in described rotating shaft, described stationary ring is fixedly connected with described bearing cap, described rotating ring radial direction to be fixed in rotating shaft and to push against and is installed on outside bearing inner race, described rotating ring and stationary ring fitting surface be provided with a folding or roll over more be folded to Qu Lu, the two complements each other to form the labyrinth gap of a ring or many rings, described bearing cap is fixed on bearing support.
2. mazy type bearing obturator as claimed in claim 1, it is characterized in that, described augers comprises screw axis, helical blade, apex point and is arranged at the coupling at screw axis top, helical blade is arranged on screw axis, helical blade outward edge is provided with powder ridge cutter, the number of degrees of described powder ridge cutter and its dihedral angle formed in the plane of the point of attachment of helical blade are greater than 90 degree, and be less than 180 degree, described rotating shaft and described coupling are fixedly connected.
3. mazy type bearing obturator as claimed in claim 2, it is characterized in that, described rotating ring, stationary ring all adopt high hardness wear-resisting material.
4. mazy type bearing obturator as claimed in claim 3, is characterized in that, described bearing support is provided with the oil nozzle to inside cavity filling lubricant medium.
5. mazy type bearing obturator as claimed in claim 4, is characterized in that, described bearing lubrication adopts lubricating grease.
6. mazy type bearing obturator as claimed in claim 5, is characterized in that, the internal diameter of described rotating ring is closely supporting with the external diameter of rotating shaft, and rotating ring is clamped by frictional force and is fixed in rotating shaft.
7. the mazy type bearing obturator as described in claim 1,2,3,4,5 or 6, is characterized in that, the labyrinth gap that described rotating ring and stationary ring complement each other to form is staircase curve vertically.
8. the mazy type bearing obturator as described in claim 1,2,3,4,5 or 6, is characterized in that, the labyrinth gap that described rotating ring and stationary ring complement each other to form is concavo-convex curve radially.
9. the mazy type bearing obturator as described in claim 1,2,3,4,5 or 6, is characterized in that, the labyrinth gap that described rotating ring and stationary ring complement each other to form is " N " shape curve vertically.
10. the mazy type bearing obturator as described in claim 1,2,3,4,5 or 6, is characterized in that, the labyrinth gap that described rotating ring and stationary ring complement each other to form is concavo-convex curve vertically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510100910.1A CN104712766A (en) | 2015-03-06 | 2015-03-06 | Labyrinth type bearing closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510100910.1A CN104712766A (en) | 2015-03-06 | 2015-03-06 | Labyrinth type bearing closing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104712766A true CN104712766A (en) | 2015-06-17 |
Family
ID=53412355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510100910.1A Pending CN104712766A (en) | 2015-03-06 | 2015-03-06 | Labyrinth type bearing closing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104712766A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605229A (en) * | 2016-02-29 | 2016-05-25 | 邓伦胜 | Gas-liquid isolating device |
| CN107409500A (en) * | 2017-09-15 | 2017-12-01 | 何岸雄 | A kind of rotary tiller shaft associated sealing arrangement for bearings |
| CN110985373A (en) * | 2019-11-22 | 2020-04-10 | 中国航发西安动力控制科技有限公司 | Servo labyrinth seal structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5611546A (en) * | 1994-05-17 | 1997-03-18 | Siemens Aktiengesellschaft | Labyrinth seal having a pressure inducing fan means |
| JP2000087872A (en) * | 1998-09-08 | 2000-03-28 | Shimadzu Corp | Gear pump for viscous fluid |
| CN101265976A (en) * | 2008-06-10 | 2008-09-17 | 宁波凯特机械有限公司 | Mechanical seal device for a rotary shaft |
| CN101494402A (en) * | 2008-12-30 | 2009-07-29 | 洛阳轴研科技股份有限公司 | Sealing structure design for electric main shaft of oil fog mill |
| CN101566232A (en) * | 2008-04-24 | 2009-10-28 | 江苏华东造纸机械有限公司 | Thin oil lubrication sealing device for vacuum roller liner bearing |
| CN101971723A (en) * | 2010-09-03 | 2011-02-16 | 韦本辉 | Spin milling type multifunctional machine for deeply ploughing and crushing ridges |
| CN202392110U (en) * | 2011-11-30 | 2012-08-22 | 重庆江北机械有限责任公司 | Shaft sealing device of horizontal scraper centrifuge |
| CN204459175U (en) * | 2015-03-06 | 2015-07-08 | 李阳铭 | A kind of mazy type bearing obturator |
-
2015
- 2015-03-06 CN CN201510100910.1A patent/CN104712766A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5611546A (en) * | 1994-05-17 | 1997-03-18 | Siemens Aktiengesellschaft | Labyrinth seal having a pressure inducing fan means |
| JP2000087872A (en) * | 1998-09-08 | 2000-03-28 | Shimadzu Corp | Gear pump for viscous fluid |
| CN101566232A (en) * | 2008-04-24 | 2009-10-28 | 江苏华东造纸机械有限公司 | Thin oil lubrication sealing device for vacuum roller liner bearing |
| CN101265976A (en) * | 2008-06-10 | 2008-09-17 | 宁波凯特机械有限公司 | Mechanical seal device for a rotary shaft |
| CN101494402A (en) * | 2008-12-30 | 2009-07-29 | 洛阳轴研科技股份有限公司 | Sealing structure design for electric main shaft of oil fog mill |
| CN101971723A (en) * | 2010-09-03 | 2011-02-16 | 韦本辉 | Spin milling type multifunctional machine for deeply ploughing and crushing ridges |
| CN202392110U (en) * | 2011-11-30 | 2012-08-22 | 重庆江北机械有限责任公司 | Shaft sealing device of horizontal scraper centrifuge |
| CN204459175U (en) * | 2015-03-06 | 2015-07-08 | 李阳铭 | A kind of mazy type bearing obturator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605229A (en) * | 2016-02-29 | 2016-05-25 | 邓伦胜 | Gas-liquid isolating device |
| CN107409500A (en) * | 2017-09-15 | 2017-12-01 | 何岸雄 | A kind of rotary tiller shaft associated sealing arrangement for bearings |
| CN110985373A (en) * | 2019-11-22 | 2020-04-10 | 中国航发西安动力控制科技有限公司 | Servo labyrinth seal structure |
| CN110985373B (en) * | 2019-11-22 | 2022-04-19 | 中国航发西安动力控制科技有限公司 | Servo labyrinth seal structure |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160519 Address after: 537500 Rongxian County Economic Development Zone, the Guangxi Zhuang Autonomous Region Industrial Road, No. 87 (Guangxi Feng Machinery Co., Ltd.) five Applicant after: GUANGXI WUFENG MACHINERY CO., LTD. Address before: Yuzhou District People's road 537000 the Guangxi Zhuang Autonomous Region Yulin City No. 398 Applicant before: Li Yangming |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150617 |