CN204739221U - Mixer shaft end sealing device - Google Patents
Mixer shaft end sealing device Download PDFInfo
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- CN204739221U CN204739221U CN201520294133.4U CN201520294133U CN204739221U CN 204739221 U CN204739221 U CN 204739221U CN 201520294133 U CN201520294133 U CN 201520294133U CN 204739221 U CN204739221 U CN 204739221U
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- sealing ring
- face sealing
- elastic element
- stirring shaft
- shaft
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Abstract
The utility model relates to a concrete mixer field, concretely relates to mixer shaft end sealing device that can improve seal structure life, including mixer casing and (mixing) shaft, be equipped with on the (mixing) shaft and move the end face seal ring, quiet end face seal ring sum elastic element, elastic element and mixer casing in close contact with, move the end face seal ring, quiet end face seal ring sum elastic element is all coaxial with the (mixing) shaft, it fixes on the (mixing) shaft to move the end face seal ring, elastic element establishes between mixer casing and quiet end face seal ring, elastic element is in compression state, and form the flexonics with the inner wall of mixer casing, make quiet end face seal ring sum (mixing) shaft become the static seal, it produces the relative formation end face seal that rotates to move the quiet end face seal of end face seal ring sum ring, the utility model discloses simple structure, sealing performance is good, can the effectual life who prolongs seal structure.
Description
Technical field
The utility model relates to concrete mixer apparatus field, is specifically related to a kind of installation and maintenance easy, effective raising agitator shaft end seal usability, and can improves the sealing device for shaft end of stirring in sealing configuration working life.
Background technique
At present, because the urbanization process of China is constantly pushed ahead, business concrete obtains in national big and medium-sized cities and develops rapidly and apply, but mixed earth stirring host operationally, concrete mud can be extruded outside cylindrical shell from the gap between the element be fixed on housing and rotatable member, is commonly called as axle head spillage, because containing sand or like solid in mud, solid particle will produce grinding in surely dynamic element, the surely dynamic element of wearing and tearing.If mud prolonged stay wherein, determining to harden in moving part gap, by the normal vibration of restriction stirring shaft and rotation, complete machine be caused normally to work, and damaging the component of stirring system further, its working life is shortened.
Traditional concrete mixer shaft end seal is generally the sealing configuration of grease filler and labyrinth composition, and this sealing configuration also exists following problem:
1, need not stop to inject lubricating grease in oil sealing, fuel consumption is large, and user cost is high;
2, lubricating grease can infiltrate in concrete, has both wasted a large amount of lubricating grease, affects again concrete quality;
3, motive sealing is fixed on stirring shaft axle, static seal rigidity be fixed on barrel, when stirring shaft is beated due to machining error, the static seal of rigidity cannot compensate beats gap change produced, and causes too early spillage;
4, when sealing due to normally use produce wearing and tearing after, seal arrangement without wear compensation or compensate very little, working life is shorter;
5, stirring shaft and labyrinth seal are difficult to guarantee coaxially, poor reliability due to machining error, even if use multiple tracks labyrinth seal, still can produce spillage phenomenon;
6, end face seal spring compensator is arranged on mixing drum inside, wrap up by concrete, operating conditions is severe, is very easy to lose efficacy and damaged, and loses compensating action.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art and provides a kind of installation and maintenance easy, effective raising agitator shaft end seal usability, reduce section components processing cost, and the sealing device for shaft end of stirring in sealing configuration working life can be improved.
The technical solution of the utility model is achieved in that
A kind of sealing device for shaft end of stirring, comprise stirrer housing and be arranged on the stirring shaft in stirrer housing, stirring shaft end is provided with bearing and bearing support, bearing support is arranged on Bearing outer, bearing support is fixed on stirrer housing, on stirring shaft, close bearing support is axially disposed with quiet end face sealing ring and dynamic end face sealing ring, quiet end face sealing ring and dynamic end face sealing ring are O-ring seal, to be sleeved on stirring shaft and coaxial with stirring shaft, quiet end face sealing ring and bearing support, also elastic element is provided with between stirrer housing, elastic element and quiet end face sealing ring, bearing support is interference fit and elastic element is in compressive state, and formed with the inwall of stirrer housing and bearing support and flexibly connect, dynamic end face sealing ring is fixed on stirring shaft, rotate together with stirring shaft, the axial elastic force of elastic element makes end face sealing ring and quiet end face sealing ring produce relative rotation formation mechanical seal, the radical elasticity of elastic element makes quiet end face sealing ring become static seal with elastic element and stirrer housing compact siro spinning technology.
The seal ring of described quiet end face sealing ring to be cross section be " L " shape, this cross section is wherein fitting with dynamic end face sealing ring of the outer side of the quiet end face sealing ring of " L " shape, and another side and stirring shaft are fitted, and inner side edge and elastic element are fitted.
Good effect of the present utility model: compared with prior art, structure of the present invention is simple, and easy installation and removal, overcomes the seal failure problem because stirring shaft two ends disalignment causes, extend working life; Be different from traditional oiling sealing, without the lubricating grease of at substantial, reduce cost, also can not have an impact to concrete quality because lubricating grease is mixed into concrete;
Dynamic end face sealing ring, the end face seal of quiet end face seal composition and elastic element, what the static seal that quiet end face sealing ring forms was all coaxial is installed on stirring shaft, matching gap is easy to control, and have larger backlash compensation, even if beating more greatly appears in stirring shaft, motive sealing and static seal still can ensure sealing effect, the present invention's elastic element provides axis and radial compensation simultaneously, make up due to stirring shaft beat produce gap, not only avoiding conventional seals form due to stirring shaft beats the seal failure problem caused, also reduce processing and the assembly precision of stirring shaft simultaneously, reduce processing cost, the present invention allows the jerk value of stirring shaft larger, Runout tolerance can reach more than 1mm,
The mechanical seal of dynamic end face sealing ring, quiet end face sealing ring composition is under the effect of elastic pressure, even if after wearing and tearing or stirring shaft are beated, seal face also remains automatic paste tightening, and seal ring is made by the rubber that wear resistance is good, surface friction drag is little, not easy to wear, extends working life, reduce energy ezpenditure, there is good sealing.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, a kind of sealing device for shaft end of stirring, the stirring shaft 2 comprising stirrer housing 1 and be arranged in stirrer housing 1, stirring shaft 2 end is provided with bearing, Bearing outer is equipped with bearing support 6, bearing support 6 is bolted on stirrer housing 1, stirring shaft 2 is provided with successively quiet end face sealing ring 4, elastic element 5 and dynamic end face sealing ring 3, elastic element 5 is rubber pneumatic bag, dynamic end face sealing ring 3, quiet end face sealing ring 4 and elastic element 5 are all coaxial with stirring shaft 2, ensure that in working procedure, dynamic end face sealing ring 3, quiet end face sealing ring 4 and elastic element 5 are coaxial line all the time, gap of beating can not be produced, dynamic end face sealing ring 3 is O-ring seal, be fixed on stirring shaft 2 by Cock screw, rotate together with stirring shaft 2, the seal ring of quiet end face sealing ring to be cross section be " L " shape, this cross section be the outer side of the quiet end face sealing ring of " L " shape wherein while fit with dynamic end face sealing ring 3, another side and stirring shaft 2 are fitted, inner side edge and elastic element are fitted completely, elastic element 5 is located at quiet end face sealing ring 4 and between stirrer housing 1 and bearing support 6, elastic element 5 and quiet end face sealing ring 4, bearing support 6 is for interference fit and elastic element 5 is in compressive state, and formed with the inwall of stirrer housing 1 and bearing support 6 and flexibly connect, quiet end face sealing ring 4 makes it keep static due to the frictional force produced with elastic element 5 interference fit, therefore, stirring shaft 2 and quiet end face sealing ring 4 form static seal under the radical elasticity effect of elastic element 5, dynamic end face sealing ring 3 is fixed on stirring shaft 2, during stirrer work, dynamic end face sealing ring 3 rotates with stirring shaft 2, and quiet end face sealing ring 4 and dynamic end face sealing ring 3 remain and fit tightly and form end face seal under the effect of the axial elastic force of elastic element 5, elastic element 5 provide not only stretch compensation, can also compensate because stirring shaft 2 shakes the gap produced, make sealability better, prevent concrete from revealing from gap, enter in the gap of operation element, cause wearing and tearing.
Claims (2)
1. a sealing device for shaft end of stirring, comprise stirrer housing and be arranged on the stirring shaft in stirrer housing, stirring shaft end is provided with bearing and bearing support, bearing support is arranged on Bearing outer, bearing support is fixed on stirrer housing, on stirring shaft, close bearing support is axially disposed with quiet end face sealing ring and dynamic end face sealing ring, quiet end face sealing ring and dynamic end face sealing ring are O-ring seal, to be sleeved on stirring shaft and coaxial with stirring shaft, it is characterized in that: quiet end face sealing ring and bearing support, also elastic element is provided with between stirrer housing, elastic element and quiet end face sealing ring, bearing support is interference fit and elastic element is in compressive state, and formed with the inwall of stirrer housing and bearing support and flexibly connect, dynamic end face sealing ring is fixed on stirring shaft, rotate together with stirring shaft, the axial elastic force of elastic element makes end face sealing ring and quiet end face sealing ring produce relative rotation formation mechanical seal, the radical elasticity of elastic element makes quiet end face sealing ring become static seal with elastic element and stirrer housing compact siro spinning technology.
2. sealing device for shaft end of stirring according to claim 1, it is characterized in that: the seal ring of described quiet end face sealing ring to be cross section be " L " shape, this cross section be the outer side of the quiet end face sealing ring of " L " shape wherein while fit with dynamic end face sealing ring, another side and stirring shaft are fitted, and inner side edge and elastic element are fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520294133.4U CN204739221U (en) | 2015-05-08 | 2015-05-08 | Mixer shaft end sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520294133.4U CN204739221U (en) | 2015-05-08 | 2015-05-08 | Mixer shaft end sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204739221U true CN204739221U (en) | 2015-11-04 |
Family
ID=54420958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520294133.4U Active CN204739221U (en) | 2015-05-08 | 2015-05-08 | Mixer shaft end sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204739221U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847900A (en) * | 2015-05-08 | 2015-08-19 | 西安德通振动搅拌技术有限公司 | Mixer shaft end sealing device |
| CN107409500A (en) * | 2017-09-15 | 2017-12-01 | 何岸雄 | A kind of rotary tiller shaft associated sealing arrangement for bearings |
| US20210283561A1 (en) * | 2020-03-12 | 2021-09-16 | Sumitomo Heavy Industries Process Equipment Co.,Ltd. | Stirring device |
-
2015
- 2015-05-08 CN CN201520294133.4U patent/CN204739221U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847900A (en) * | 2015-05-08 | 2015-08-19 | 西安德通振动搅拌技术有限公司 | Mixer shaft end sealing device |
| CN107409500A (en) * | 2017-09-15 | 2017-12-01 | 何岸雄 | A kind of rotary tiller shaft associated sealing arrangement for bearings |
| US20210283561A1 (en) * | 2020-03-12 | 2021-09-16 | Sumitomo Heavy Industries Process Equipment Co.,Ltd. | Stirring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Longxiang Road intersection southeast Weidu District of Xuchang city in Henan province and 461000 Chen Zhuang Street Corner Patentee after: Xuchang Detong Special Concrete Co.,Ltd. Address before: Nine city road Fengcheng economic and Technological Development Zone, Shaanxi city of Xi'an province about 710018 46 unit 2 building 23 layer Patentee before: XI'AN DETONG VIBRATORY MIXING TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 461000 southeast corner of Longxiang Road and Chenzhuang Street intersection, Weidu District, Xuchang City, Henan Province Patentee after: Xuchang Detong Special Concrete Technology Co.,Ltd. Address before: 461000 southeast corner of Longxiang Road and Chenzhuang Street intersection, Weidu District, Xuchang City, Henan Province Patentee before: Xuchang Detong Special Concrete Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190325 Address after: 461000 southeast corner of Longxiang Road and Chenzhuang Street intersection, Weidu District, Xuchang City, Henan Province Patentee after: Xuchang Detong Concrete Industry Technology Research Institute Co.,Ltd. Address before: 461000 southeast corner of Longxiang Road and Chenzhuang Street intersection, Weidu District, Xuchang City, Henan Province Patentee before: Xuchang Detong Special Concrete Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |