CN109084026A - A kind of compound sealing structure of shaft outside shell - Google Patents
A kind of compound sealing structure of shaft outside shell Download PDFInfo
- Publication number
- CN109084026A CN109084026A CN201810774491.3A CN201810774491A CN109084026A CN 109084026 A CN109084026 A CN 109084026A CN 201810774491 A CN201810774491 A CN 201810774491A CN 109084026 A CN109084026 A CN 109084026A
- Authority
- CN
- China
- Prior art keywords
- shaft
- seal
- sealing
- annular
- sealing structure
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 77
- 150000001875 compounds Chemical class 0.000 title claims abstract description 22
- 239000000565 sealant Substances 0.000 claims description 5
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 239000004589 rubber sealant Substances 0.000 claims description 3
- 238000005984 hydrogenation reaction Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000003566 sealing material Substances 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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The present invention relates to a kind of compound sealing structure of shaft outside shell, including the seal box being sequentially sleeved in shaft, seal, sealing cover, the left side of seal box and the closed front of shell are fixed, annular seal layer A is equipped between middle part and shaft, clearance fit is formed between right side and shaft, clearance fit is formed between the left side and shaft of seal and is closed with seal box fixes, annular seal layer B is equipped between middle part and shaft, right side is hatch frame, the left side that clearance fit and sealing cover are formed between sealing cover and shaft is inserted into annular seal layer B by the right openings structure of seal.Advantage is: sealing performance is significantly promoted, and wear-resisting property, high temperature resistance have obtained a degree of promotion.In addition, also the service life of compound sealing structure of the present invention can be extended in the case where long-time uses sealing performance to decline, by way of squeezing again.
Description
Technical field
The present invention relates to a kind of rotating shaft sealing structure, compound sealing structure of especially a kind of shaft outside shell.
Background technique
Currently, rotating shaft sealing structure generallys use felt seal or packing_seal, have a disadvantage in that sealing effect it is undesirable,
The reliability that service life is short, long-play be easy to cause leakage and seals is not high.Meanwhile shaft rotation can generate heat
And obturator is passed to, and when obturator overheat, in addition to it can change the medium condition of components, it can also aggravate its corrosion
Rate, the problems such as causing the deformation of metal parts, the cracking in alloy face and certain crack of plating.
Summary of the invention
Goal of the invention: in view of the above-mentioned problems, the compound seal knot that the object of the present invention is to provide a kind of shafts outside shell
Structure, effective lift-off seal performance.
Technical solution: a kind of compound sealing structure of shaft outside shell, including be sequentially sleeved in shaft seal box,
Seal, sealing cover, the left side of the seal box and the closed front of shell fix, are equipped with annular between middle part and the shaft
Clearance fit is formed between sealant A, right side and the shaft, forms gap between the left side of the seal and the shaft
Cooperation and with seal box closing is fixed, be equipped with annular seal layer B between middle part and the shaft, right side is hatch frame,
The left side of formation clearance fit and the sealing cover passes through the right side opening of the seal between the sealing cover and the shaft
Mouth structure is inserted into the annular seal layer B.
In use, squeezing annular seal layer A formation for the first order sealing structure of shaft using seal box, sealing is utilized
Lid squeezes annular seal layer B formation for the second level sealing structure of shaft, and high degree improves sealing performance.Meanwhile
It is all made of clearance fit between seal box, seal, sealing cover and shaft, to ensure that shaft can smoothly rotate.
Further, the left side of the seal box is hatch frame and to fix with the closed front of shell, when will be of the invention
When compound sealing structure is applied in the shaft with stepped groove, it can will be formed between shaft on the right side of the seal box of clearance fit
It is set in the low dot location of shaft stepped groove, there is good adaptability for the shaft with stepped groove.
Further, the annular pressing plate being set in the shaft is provided in the annular seal layer A, on the seal box
It is provided with clamping screw, one end of the clamping screw withstands on the right side of the annular pressing plate, and the other end stretches out the seal box
Outside.It, can be by rotatably compressing spiral shell outside seal box when the compound sealing structure of this programme uses sealing performance to decline for a long time
Bar squeezes sealing material A, to the left to reinforce sealing performance.
Further, the sealing ring being set in the shaft, institute are additionally provided between the housing exterior walls and the seal box
Sealing ring connection is stated to close on the left of the housing exterior walls and the seal box.To further strengthen sealing performance, meanwhile, work as shaft
Stepped groove when stretching out the outer distance of shell farther out, thickness moderate sealing ring can be selected, seal box is fixed on housing exterior walls.
Further, it is tensed and is connected by stretching screw between the seal and the sealing cover.It is compound when this programme
When sealing structure uses sealing performance to decline for a long time, the sealing in annular seal layer B can be squeezed by screwing stretching screw
Material B reinforces sealing effect.
Further, the shaft and the seal box, seal, be arranged with anti-wearing liner between sealing cover, it is described wear-resisting
Bushing is fixed in the shaft using holding screw, wear-resisting property when reinforcing shaft rotation, between sealing structure.
Further, the annular seal layer A is hydrogenation nitrile rubber sealant., intensity is high, wear-resisting property is strong, and has
Certain high temperature resistance.
Further, the annular seal layer B is oil-containing polyethylene packing sealant.With stronger high-temperature resistant result, about
600 degree or so, and coefficient of friction is low, wear-resisting property is strong.
The utility model has the advantages that compared with prior art, the invention has the advantages that sealing performance is significantly promoted, and
Wear-resisting property, high temperature resistance have obtained a degree of promotion.In addition, can also be used in long-time, sealing performance decline
In the case where, by way of squeezing again, extend the service life of compound sealing structure of the present invention.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.
A kind of compound sealing structure of shaft outside shell, as shown in Fig. 1, including seal box 1, seal 2, sealing cover
3, sealing ring 4, stretching screw 5, anti-wearing liner 6.
The compound sealing structure of the present embodiment is set between 110 outer wall of shaft 100 and shell, sealing ring 4, seal box 1,
Seal 2, sealing cover 3 are sequentially sleeved in shaft 100.
Seal ring set is located in shaft, and is set between housing exterior walls and the seal box, meanwhile, sealing ring connection closing
On the left of housing exterior walls and seal box.
Anti-wearing liner 6 is set in shaft 100 and, seal box 1, seal fixed using holding screw 61 and shaft 100
2, sealing cover 3 is successively set on the periphery of anti-wearing liner 6.
The left side of seal box 1 is hatch frame and fixes with the closing of sealing ring 4, is equipped with ring between middle part and anti-wearing liner 6
Clearance fit is formed between shape sealant A11, right side and anti-wearing liner 6, is provided in annular seal layer A11 and is set in wear-resisting lining
Set 6 on annular pressing plate 12, seal box 1 also on be provided with clamping screw 13, one end of clamping screw 13 withstands on annular pressing plate 12
Right side, the other end stretch out seal box 1 outside.
Formed between the left side and anti-wearing liner 6 of seal 2 clearance fit and with the closing of seal box 1 is fixed, middle part with it is resistance to
Mill lining set 6 between be equipped with annular seal layer B21, right side be hatch frame,
The left side of formation clearance fit and sealing cover 3 passes through the right side opening of seal 2 between sealing cover 3 and anti-wearing liner 6
Mouth structure is inserted into annular seal layer B21.
Connection is tensed by stretching screw 5 between seal 2 and sealing cover 3.
In the present embodiment, annular seal layer A11 preferably hydrogenate nitrile rubber sealant, annular seal layer B21 be preferably
Oil-containing polyethylene packing sealant.
The present embodiment carries out first order sealing first with sealing ring, secondly squeezes annular seal layer A shape using seal box
In pairs in the second level sealing structure of shaft, annular seal layer B formation is squeezed for the third level of shaft using sealing cover again
Sealing structure, high degree improve sealing performance.Meanwhile the annular pressing plate in seal box and clamping screw form the first order
Extrusion structure, seal, sealing cover, stretching screw form second level extrusion structure, and high degree improves compound seal knot
The service life of structure.
Claims (8)
1. a kind of compound sealing structure of shaft outside shell, it is characterised in that: close on shaft (100) including being sequentially sleeved at
Jacket (1), seal (2), sealing cover (3), the left side of the seal box (1) and the closed front of shell (110) fix, middle part
It is equipped between the shaft (100) between annular seal layer A (11), right side and the shaft (100) and forms clearance fit, institute
State formed between the left side of seal (2) and the shaft (100) clearance fit and with the seal box (1) closing it is fixed, in
Between portion and the shaft (100) be equipped with annular seal layer B (21), right side be hatch frame, the sealing cover (3) with described turn
It is inserted by the right openings structure of the seal (2) in the left side that clearance fit and the sealing cover (3) are formed between axis (100)
Enter in the annular seal layer B (21).
2. a kind of compound sealing structure of the shaft according to claim 1 outside shell, it is characterised in that: the seal box
(1) left side is hatch frame and fixes with the closed front of shell (110).
3. a kind of compound sealing structure of the shaft according to claim 1 outside shell, it is characterised in that: the annular is close
It is provided with the annular pressing plate (12) being set on the shaft (100) in sealing A (11), is provided with pressure on the seal box (1)
Tight screw rod (13), one end of the clamping screw (13) withstand on the right side of the annular pressing plate (12), and the other end stretches out described close
Jacket (1) is outside.
4. a kind of compound sealing structure of the shaft according to claim 1 outside shell, it is characterised in that: the shell
(110) sealing ring (4) being set on the shaft (100), the sealing ring are additionally provided between outer wall and the seal box (1)
(4) connection is closed on the left of shell (110) outer wall and the seal box (1).
5. a kind of compound sealing structure of the shaft according to claim 1 outside shell, it is characterised in that: the seal
(2) connection is tensed by stretching screw (5) between the sealing cover (3).
6. a kind of compound sealing structure of the shaft according to claim 1 outside shell, it is characterised in that: the shaft
(100) it and the seal box (1), seal (2), is arranged with anti-wearing liner (6) between sealing cover (3), the anti-wearing liner (6)
It is fixed on the shaft (100) using holding screw (61).
7. a kind of compound sealing structure of the shaft according to claim 1 outside shell, it is characterised in that: the annular is close
Sealing A (11) is hydrogenation nitrile rubber sealant.
8. a kind of compound sealing structure of the shaft according to claim 1 outside shell, it is characterised in that: the annular is close
Sealing B (21) is oil-containing polyethylene packing sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810774491.3A CN109084026A (en) | 2018-07-16 | 2018-07-16 | A kind of compound sealing structure of shaft outside shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810774491.3A CN109084026A (en) | 2018-07-16 | 2018-07-16 | A kind of compound sealing structure of shaft outside shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109084026A true CN109084026A (en) | 2018-12-25 |
Family
ID=64837924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810774491.3A Pending CN109084026A (en) | 2018-07-16 | 2018-07-16 | A kind of compound sealing structure of shaft outside shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109084026A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113771664A (en) * | 2021-10-18 | 2021-12-10 | 国网山东省电力公司济南市章丘区供电公司 | Electric pile is filled in theftproof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120025473A1 (en) * | 2009-03-31 | 2012-02-02 | Eagle Industry Co., Ltd. | Shaft sealing apparatus |
| CN202344673U (en) * | 2011-11-16 | 2012-07-25 | 山推楚天工程机械有限公司 | Stir main engine shaft end air seal device |
| CN104500746A (en) * | 2014-11-07 | 2015-04-08 | 南通密炼捏合机械有限公司 | Rotating shaft sealing structure |
| CN205978452U (en) * | 2016-08-10 | 2017-02-22 | 天津华庆百胜塑业有限公司 | Shaft seal device of blendor |
| JP3216619U (en) * | 2018-03-30 | 2018-06-07 | 日本バルカー工業株式会社 | Shaft seal structure of rotating shaft |
| CN208535164U (en) * | 2018-07-16 | 2019-02-22 | 江苏华本环境科技有限公司 | A kind of compound sealing structure of shaft outside shell |
-
2018
- 2018-07-16 CN CN201810774491.3A patent/CN109084026A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120025473A1 (en) * | 2009-03-31 | 2012-02-02 | Eagle Industry Co., Ltd. | Shaft sealing apparatus |
| CN202344673U (en) * | 2011-11-16 | 2012-07-25 | 山推楚天工程机械有限公司 | Stir main engine shaft end air seal device |
| CN104500746A (en) * | 2014-11-07 | 2015-04-08 | 南通密炼捏合机械有限公司 | Rotating shaft sealing structure |
| CN205978452U (en) * | 2016-08-10 | 2017-02-22 | 天津华庆百胜塑业有限公司 | Shaft seal device of blendor |
| JP3216619U (en) * | 2018-03-30 | 2018-06-07 | 日本バルカー工業株式会社 | Shaft seal structure of rotating shaft |
| CN208535164U (en) * | 2018-07-16 | 2019-02-22 | 江苏华本环境科技有限公司 | A kind of compound sealing structure of shaft outside shell |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113771664A (en) * | 2021-10-18 | 2021-12-10 | 国网山东省电力公司济南市章丘区供电公司 | Electric pile is filled in theftproof |
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