CN202371163U - Novel shaft end sealing structure of concrete mixer - Google Patents
Novel shaft end sealing structure of concrete mixer Download PDFInfo
- Publication number
- CN202371163U CN202371163U CN2011205274391U CN201120527439U CN202371163U CN 202371163 U CN202371163 U CN 202371163U CN 2011205274391 U CN2011205274391 U CN 2011205274391U CN 201120527439 U CN201120527439 U CN 201120527439U CN 202371163 U CN202371163 U CN 202371163U
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- Prior art keywords
- stirring
- seal ring
- stirring shaft
- ring
- shaft
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Abstract
The utility model discloses a novel shaft end sealing structure of a concrete mixer. A dynamic seal ring sleeved on a stirring shaft is arranged on the stirring shaft of the novel shaft end sealing structure, which is positioned on the inner side of a stirring drum body; a static seal ring sleeved on the stirring shaft is arranged on the stirring drum body; an end surface of the dynamic seal ring and an end surface of the static seal ring are formed through the compression of a spring being capable of axially extending on the stirring shaft and arranged on the stirring shaft or stirring drum body, and are hermetically contacted; and the hermetically contacted end surfaces of the dynamic seal ring and the static seal ring are both positioned on the inner side of the stirring drum body. According to the utility model, the dynamic seal ring and the static seal ring are compacted by the spring to form the surface contact seal, and the seal contact surfaces are positioned inside the stirring drum body, so that silt and sand in the stirring drum body cannot enter the part of stirring shaft used for being connected with the stirring drum body and the part outside the stirring drum body, and the sealing effect is excellent.
Description
Technical field
The utility model 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 utility model 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 utility model comprises stirring 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.
The beneficial effect of the utility model: the utility model 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 the structural representation of the utility model;
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 |
|---|---|---|---|
| CN2011205274391U CN202371163U (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 |
|---|---|---|---|
| CN2011205274391U CN202371163U (en) | 2011-12-16 | 2011-12-16 | Novel shaft end sealing structure of concrete mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202371163U true CN202371163U (en) | 2012-08-08 |
Family
ID=46594867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205274391U Expired - Lifetime CN202371163U (en) | 2011-12-16 | 2011-12-16 | Novel shaft end sealing structure of concrete mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202371163U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494139A (en) * | 2011-12-16 | 2012-06-13 | 山东米科思机械设备有限公司 | Novel shaft-end sealing structure of concrete mixer |
| CN103465369A (en) * | 2013-09-13 | 2013-12-25 | 三一汽车制造有限公司 | Mixing drum sealing device and mixing transport cart |
| 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 |
| 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 |
-
2011
- 2011-12-16 CN CN2011205274391U patent/CN202371163U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494139A (en) * | 2011-12-16 | 2012-06-13 | 山东米科思机械设备有限公司 | Novel shaft-end sealing structure of concrete mixer |
| CN103465369A (en) * | 2013-09-13 | 2013-12-25 | 三一汽车制造有限公司 | Mixing drum sealing device and mixing transport cart |
| 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 |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |
|
| CX01 | Expiry of patent term |