CN102494139A - Novel shaft-end sealing structure of concrete mixer - Google Patents
Novel shaft-end sealing structure of concrete mixer Download PDFInfo
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- CN102494139A CN102494139A CN2011104221226A CN201110422122A CN102494139A CN 102494139 A CN102494139 A CN 102494139A CN 2011104221226 A CN2011104221226 A CN 2011104221226A CN 201110422122 A CN201110422122 A CN 201110422122A CN 102494139 A CN102494139 A CN 102494139A
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Abstract
The invention discloses a novel shaft-end sealing structure of a concrete mixer. A movable sealing ring sleeved on a mixing shaft is arranged on a portion, which is located on the inner side of a mixing barrel, of the mixing shaft, a fixed sealing ring sleeved on the mixing shaft is arranged on the mixing barrel, the movable sealing ring and the fixed sealing ring are pressed by a spring which is arranged on the mixing shaft or the mixing barrel and axially stretches and retracts on the mixing shaft, so that an end surface of the movable sealing ring hermetically contacts with an end surface of the fixed sealing ring, and both end surfaces, which contact with each other, of the movable sealing ring and the fixed sealing ring are located on the inner side of the mixing barrel. As the movable sealing ring and the fixed sealing ring are pressed by the spring so that surface contact sealing is formed, the sealing contact surfaces are located in the mixing barrel, sand in the mixing barrel cannot enter a portion, which is connected with the mixing barrel, of the mixing shaft and a portion which is located out of the mixing barrel, and a sealing effect is good.
Description
Technical field
The present invention relates to a kind of concrete mixer shaft end seal structure.
Background technique
Concrete mixer (hereinafter to be referred as stirrer) is that concrete mixes the indispensable equipment that stirs, and wherein the axle horizontal type concrete mixer is that domestic and international application is the most extensive, the mixing plant that use amount is maximum.It has that mixing quality is good, manufacturing efficiency is high, advanced in performance, use advantages such as reliable.But axle horizontal type stirrer stirring shaft and axle head are embedded in the concrete at work always, thus the reliability of shaft end seal and working life be a key issue of axle horizontal type stirrer always, also be the insoluble always technical barrier of stirrer industry.
Near mixing drum intracoelomic cavity place a pair of shaft end seal guard circle is being arranged all generally in the axle horizontal type shaft end seal both at home and abroad now; One of them guard circle is fixed on the stirring shaft; Another guard circle is enclosed within on the stirring shaft and is fixed on and stirs on the cylindrical shell, and the two does not contact this guard circle, and certain clearance is arranged.Be positioned at stirring shaft and be provided with O-ring seal with the part that stirs the upper outside in two guard circles of cylindrical shell, there is following shortcoming in this sealing configuration:
Because there is the gap in guard circle, mortar is easy to get in the axle head through the gap, and in a single day mortar gets in the axle head, and the O-ring seal of the axle head of will soon grinding away causes spillage, so the sealing of this kind shaft end seal technology is reliable inadequately, and the life-span is shorter.
Summary of the invention
The problem that the present invention will solve is: the novel sealing structure of shaft end of concrete mixer that a kind of good airproof performance is provided.
For addressing the above problem; The present invention includes and stir cylindrical shell and stirring shaft; To reach mixing drum in the cylindrical shell external from stirring for the spindle nose of stirring shaft; The part that is positioned at the inboard of mixing drum body on the stirring shaft is provided with the rotary packing ring that is enclosed within on the stirring shaft; Stir cylindrical shell and be provided with the stationary seal ring that is enclosed within on the stirring shaft, rotary packing ring and stationary seal ring contact with the stationary seal ring end face seal by being arranged on stirring shaft or stirring the end face that the spring compression at the axial stretching of stirring shaft on the cylindrical shell forms rotary packing ring, and the end face that rotary packing ring contacts with the sealing of stationary seal ring all is positioned at stirring cylindrical shell inboard; Between stirring cylindrical shell and stirring shaft, be provided with oil sealing device, oil sealing device is positioned at the outside of rotary packing ring and stationary seal ring.
For the ease of installing, described stirring shaft is provided with back-up ring, and described spring is connected between back-up ring and the rotary packing ring, and described stationary seal ring is fixed on the inboard of stirring cylindrical shell, and the end face that rotary packing ring contacts with the sealing of stationary seal ring is the plane.
For rotary packing ring can be rotated with stirring shaft synchronously, be connected with dive key between described rotary packing ring and the stirring shaft.
In order to make oil sealing device simple in structure; Described oil sealing device comprises the spindle nose shell that is fixed on the external side of mixing drum; Stirring shaft is provided with the axle jack that is positioned at the spindle nose shell; Be provided with seal ring between spindle nose shell the inner and axle jack the inner and the stirring cylindrical shell, the spindle nose shell is provided with oil inlet passage and the oil inlet pipe that is connected oil inlet passage, and the part that is positioned at the oil inlet passage outside between spindle nose shell and the axle jack is provided with one-way sealing circle and fluctuate hermetical ring.
In order to improve the working life of rotary packing ring and stationary seal ring, described rotary packing ring is provided with oil groove with the end face that the sealing of stationary seal ring contacts.
Beneficial effect of the present invention: the present invention replaces two guard circles of the prior art with rotary packing ring and stationary seal ring; Because rotary packing ring and stationary seal ring form face contact seal by spring compression; And sealing contact surface is positioned at the inside of stirring cylindrical shell; Silt particle in the stirring cylindrical shell can not get into and be used for the part that is connected with the stirring cylindrical shell on the stirring shaft and stir the part outside the cylindrical shell, and good sealing effect can not hinder the rotation of stirring shaft.And through injecting lubricating oil two seal rings are lubricated, have improved the working life of two seal rings.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Among the figure: 1, stirring shaft, 2, back-up ring, 3, spring, 4, rotary packing ring, 5, stationary seal ring, 6, stir cylindrical shell, 7, yellow glue seal ring, 8, axle jack, 9, the one-way sealing circle, 10, the spindle nose shell, 11, fluctuate hermetical ring, 12, dive key.
Embodiment
A kind of specific embodiment as shown in Figure 1; It comprises stirs cylindrical shell 6 and stirring shaft 1, and the spindle nose of stirring shaft 1 reaches in stirring cylindrical shell 6 and stirs outside the cylindrical shell 6, and the inboard of stirring cylindrical shell 6 is fixed with stationary seal ring 5; Stationary seal ring 5 is enclosed within on the stirring shaft 1; Be positioned on the stirring shaft 1 on the inboard part of stationary seal ring 5 and be with back-up ring 2 and rotary packing ring 4, back-up ring 2 is fixed on the stirring shaft 1, and rotary packing ring 4 is connected through dive key 12 with stirring shaft 1; Be connected with spring 3 between rotary packing ring 4 and the back-up ring 2, spring 3 is flexible on the axial direction of stirring shaft 1.Rotary packing ring 4 outside end faces contact with the inner side end sealing of stationary seal ring 5.The end face that rotary packing ring 4 contacts with the sealing of stationary seal ring 5 is the plane and is positioned at and stirs cylindrical shell 6 inboards.Rotary packing ring 4 is provided with oil groove with the end face that the sealing of stationary seal ring 5 contacts.Rotary packing ring 4 and stationary seal ring 5 the two can adopt carburizing and quenching to polish with surface grinding machine then.
Between stirring cylindrical shell 6 and stirring shaft 1, be provided with oil sealing device; Oil sealing device is positioned at the outside of rotary packing ring 4 and stationary seal ring 5; Oil sealing device comprises the spindle nose shell 10 that is fixed on stirring cylindrical shell 6 outsides; Stirring shaft 1 is provided with the axle jack 8 that is positioned at spindle nose shell 10; Be provided with yellow glue seal ring 7 between the inner of the inner of spindle nose shell 10 and axle jack 8 and the stirring cylindrical shell 6, spindle nose shell 10 is provided with oil inlet passage and the oil inlet pipe that is connected oil inlet passage, and the part that is positioned at the oil inlet passage outside between spindle nose shell 10 and the axle jack 8 is provided with one-way sealing circle 9 and fluctuate hermetical ring 11.
Working principle:
Inject extreme pressure lubricant through oil inlet pipe; Lubricant oil gets between spindle nose shell 10 and the axle jack 8 through oil inlet passage; And push yellow glue seal ring 7; Make 7 distortion of yellow glue seal ring form gaps, lubricant oil is clamp-oned stirring shaft 1 and is stirred between the cylindrical shell 6 and get into the oil groove on the seal face of rotary packing ring 4 and stationary seal ring 5.Improved the wear resistance of two seal rings.The silt particle that stirs in the cylindrical shell 6 is sealed by rotary packing ring 4 and stationary seal ring 5, can not get into to be used for the part that is connected with stirring cylindrical shell 6 on the stirring shaft 1 and to be in the part that stirs outside the cylindrical shell 6.
Claims (5)
1. novel sealing structure of shaft end of concrete mixer; Comprise and stir cylindrical shell and stirring shaft; To reach mixing drum in the cylindrical shell external from stirring for the spindle nose of stirring shaft; It is characterized in that: the part that is positioned at the inboard of mixing drum body on the stirring shaft is provided with the rotary packing ring that is enclosed within on the stirring shaft; Stir cylindrical shell and be provided with the stationary seal ring that is enclosed within on the stirring shaft, rotary packing ring and stationary seal ring contact with the stationary seal ring end face seal by being arranged on stirring shaft or stirring the end face that the spring compression at the axial stretching of stirring shaft on the cylindrical shell forms rotary packing ring, and the end face that rotary packing ring contacts with the sealing of stationary seal ring all is positioned at stirring cylindrical shell inboard; Between stirring cylindrical shell and stirring shaft, be provided with oil sealing device, oil sealing device is positioned at the outside of rotary packing ring and stationary seal ring.
2. the novel sealing structure of shaft end of concrete mixer according to claim 1; It is characterized in that: described stirring shaft is provided with back-up ring; Described spring is connected between back-up ring and the rotary packing ring; Described stationary seal ring is fixed on the inboard of stirring cylindrical shell, and the end face that rotary packing ring contacts with the sealing of stationary seal ring is the plane.
3. the novel sealing structure of shaft end of concrete mixer according to claim 2 is characterized in that: be connected with dive key between described rotary packing ring and the stirring shaft.
4. the novel sealing structure of shaft end of concrete mixer according to claim 1; It is characterized in that: described oil sealing device comprises the spindle nose shell that is fixed on the external side of mixing drum; Stirring shaft is provided with the axle jack that is positioned at the spindle nose shell; Be provided with seal ring between spindle nose shell the inner and axle jack the inner and the stirring cylindrical shell; The spindle nose shell is provided with oil inlet passage and the oil inlet pipe that is connected oil inlet passage, and the part that is positioned at the oil inlet passage outside between spindle nose shell and the axle jack is provided with one-way sealing circle and fluctuate hermetical ring.
5. according to the novel sealing structure of shaft end of any one described concrete mixer among the claim 1-4, it is characterized in that: described rotary packing ring is provided with oil groove with the end face that the sealing of stationary seal ring contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104221226A CN102494139A (en) | 2011-12-16 | 2011-12-16 | Novel shaft-end sealing structure of concrete mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104221226A CN102494139A (en) | 2011-12-16 | 2011-12-16 | Novel shaft-end sealing structure of concrete mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102494139A true CN102494139A (en) | 2012-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104221226A Pending CN102494139A (en) | 2011-12-16 | 2011-12-16 | Novel shaft-end sealing structure of concrete mixer |
Country Status (1)
| Country | Link |
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| CN (1) | CN102494139A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840331A (en) * | 2012-09-21 | 2012-12-26 | 长安大学 | Shaft end sealing device for horizontal-shaft concrete mixer |
| CN103016741A (en) * | 2012-12-18 | 2013-04-03 | 陆泽鹏 | Mixing machine shaft end sealing device |
| CN104669436A (en) * | 2014-12-25 | 2015-06-03 | 中联重科股份有限公司 | Concrete mixer, shaft end sealing structure thereof and shaft end fault removing method |
| CN104847897A (en) * | 2015-04-13 | 2015-08-19 | 泰州市建业车件制造有限公司 | Shaft-end seal structure of concrete mixer |
| CN105090516A (en) * | 2014-05-15 | 2015-11-25 | 中联重科股份有限公司 | Stirrer, shaft end sealing structure thereof and shaft end sealing structure mounting method |
| CN105202197A (en) * | 2015-10-16 | 2015-12-30 | 长安大学 | Gas seal structure and gas seal method of vibratory mixer |
| CN107344401A (en) * | 2017-08-29 | 2017-11-14 | 烟台盛利达工程技术有限公司 | The concrete mixing and transporting car of quill shaft rotary sealing |
| CN114321382A (en) * | 2021-12-23 | 2022-04-12 | 中国航发哈尔滨东安发动机有限公司 | Contact dynamic seal structure suitable for oil circuit between rotating piece and static piece |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3736435A1 (en) * | 1987-10-28 | 1989-05-11 | Alb Maschinen | Mixer-shaft sealing and mounting arrangement |
| US20050146096A1 (en) * | 2004-01-02 | 2005-07-07 | Swisher James A. | Trunnion assembly |
| CN201166117Y (en) * | 2008-01-29 | 2008-12-17 | 珠海仕高玛机械设备有限公司 | Novel shaft sealing device and horizontal type concrete stirrer used thereby |
| CN201552666U (en) * | 2009-11-02 | 2010-08-18 | 韶关市丰一工贸有限公司 | Multi-sealing device for mechanical shaft ends |
| CN201651315U (en) * | 2010-04-09 | 2010-11-24 | 郑州华能电力设备有限公司 | Composite mechanical seal device |
| CN102072322A (en) * | 2011-01-31 | 2011-05-25 | 江苏金鹰流体机械有限公司 | Combined type sealing device with double end faces |
| CN202371163U (en) * | 2011-12-16 | 2012-08-08 | 山东米科思机械设备有限公司 | Novel shaft end sealing structure of concrete mixer |
-
2011
- 2011-12-16 CN CN2011104221226A patent/CN102494139A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3736435A1 (en) * | 1987-10-28 | 1989-05-11 | Alb Maschinen | Mixer-shaft sealing and mounting arrangement |
| US20050146096A1 (en) * | 2004-01-02 | 2005-07-07 | Swisher James A. | Trunnion assembly |
| CN201166117Y (en) * | 2008-01-29 | 2008-12-17 | 珠海仕高玛机械设备有限公司 | Novel shaft sealing device and horizontal type concrete stirrer used thereby |
| CN201552666U (en) * | 2009-11-02 | 2010-08-18 | 韶关市丰一工贸有限公司 | Multi-sealing device for mechanical shaft ends |
| CN201651315U (en) * | 2010-04-09 | 2010-11-24 | 郑州华能电力设备有限公司 | Composite mechanical seal device |
| CN102072322A (en) * | 2011-01-31 | 2011-05-25 | 江苏金鹰流体机械有限公司 | Combined type sealing device with double end faces |
| CN202371163U (en) * | 2011-12-16 | 2012-08-08 | 山东米科思机械设备有限公司 | Novel shaft end sealing structure of concrete mixer |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840331A (en) * | 2012-09-21 | 2012-12-26 | 长安大学 | Shaft end sealing device for horizontal-shaft concrete mixer |
| CN103016741A (en) * | 2012-12-18 | 2013-04-03 | 陆泽鹏 | Mixing machine shaft end sealing device |
| CN105090516A (en) * | 2014-05-15 | 2015-11-25 | 中联重科股份有限公司 | Stirrer, shaft end sealing structure thereof and shaft end sealing structure mounting method |
| CN105090516B (en) * | 2014-05-15 | 2017-10-27 | 中联重科股份有限公司 | Stirrer, shaft end sealing structure thereof and shaft end sealing structure mounting method |
| CN104669436A (en) * | 2014-12-25 | 2015-06-03 | 中联重科股份有限公司 | Concrete mixer, shaft end sealing structure thereof and shaft end fault removing method |
| CN104847897A (en) * | 2015-04-13 | 2015-08-19 | 泰州市建业车件制造有限公司 | Shaft-end seal structure of concrete mixer |
| CN105202197A (en) * | 2015-10-16 | 2015-12-30 | 长安大学 | Gas seal structure and gas seal method of vibratory mixer |
| CN107344401A (en) * | 2017-08-29 | 2017-11-14 | 烟台盛利达工程技术有限公司 | The concrete mixing and transporting car of quill shaft rotary sealing |
| CN114321382A (en) * | 2021-12-23 | 2022-04-12 | 中国航发哈尔滨东安发动机有限公司 | Contact dynamic seal structure suitable for oil circuit between rotating piece and static piece |
| CN114321382B (en) * | 2021-12-23 | 2024-05-28 | 中国航发哈尔滨东安发动机有限公司 | Contact dynamic seal structure suitable for oil circuit between rotating piece and static piece |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120613 |