CN204533531U - A kind of seal device for concrete mixer - Google Patents
A kind of seal device for concrete mixer Download PDFInfo
- Publication number
- CN204533531U CN204533531U CN201520217469.0U CN201520217469U CN204533531U CN 204533531 U CN204533531 U CN 204533531U CN 201520217469 U CN201520217469 U CN 201520217469U CN 204533531 U CN204533531 U CN 204533531U
- Authority
- CN
- China
- Prior art keywords
- spindle nose
- seal
- guard circle
- sealing
- nose guard
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a kind of seal device for concrete mixer; comprise stirring shaft; be arranged on the change hub on stirring shaft; be arranged on the bearing support on change hub; also comprise and be installed on the spindle nose guard circle stirring barrel inner side surface and the baffle ring being installed on spindle nose guard circle inner side surface, and at spindle nose guard circle, be provided with teflon packing between baffle ring and stirring shaft.First sealing employing baffle ring, teflon packing and spindle nose guard circle, second sealing adopts yellow glue, blue glue, floating seal and outside framework oil seal, and the hermetic seal chamber that formation one is airtight between first sealing with second sealing forms three seals.These device installation and maintenance are easy, and cost is low, and disassembling, assembling and replacing is convenient, effectively improves agitator shaft end seal, and can significantly improve the working life of sealing mechanism.
Description
Technical field
The utility model relates to a kind of seal arrangement of concrete mixer, is mainly used in the shaft end seal of dual horizontal shaft type concrete mixer.
Background technique
At present, the sealing structure of shaft end of concrete mixer mainly contains following three kinds: the first is made up of labyrinth and floating seal; The second is made up of hermetic seal, shaping filler and floating seal; The third is made up of shaping filler and floating seal.Floating seal is conventional concrete mixer sealing means as can be seen here, and the sealing configuration as prior art also exists following deficiency: the first, in floating seal, O shape circle adjustment amount is little, is generally no more than 2mm; The second, because stirrer working environment is extremely severe, there is the mortar of fine particle at O shape circle place; Three, the not resistance to alkali lye of floating ring O shape circle material, once the seal form before floating seal is damaged, floating seal will damage very soon; Four, floating ring requirement on machining accuracy is very high, and circumgyration linear velocity during use is higher, and the required precision of installation fit dimension is harsher; Five, part forming seal is protected atmospheric pressure and is difficult to determine, not easily, it is improper to maintain in maintaining, occurs that grease is excessive or enters the situation of lubrication without grease.
There is different problems and be not easy to select in the seal form combined based on floating seal traditional as mentioned above, from actual practical process and installation and maintenance two angles, is difficult to take into account advantage in many ways.
Model utility content
Technical problem to be solved in the utility model is, provides a kind of seal device for concrete mixer, by setting up multiple-sealed mechanism in floating seal arrangement front end, to improve agitator shaft end seal further, and improves the working life of sealing mechanism.
The technical solution of the utility model is as follows:
A kind of seal device for concrete mixer; comprise stirring shaft; be arranged on the change hub on stirring shaft; be arranged on the bearing support stirred on barrel; it is characterized in that: also comprise and be installed on the spindle nose guard circle stirring barrel inner side surface and the baffle ring being installed on spindle nose guard circle inner side surface, and at spindle nose guard circle, be provided with teflon packing between baffle ring and stirring shaft.
Also comprise and be fixed on yellow glue on bearing support by locking steel ring, between yellow glue and change hub, producing floating compression.
Described stirring barrel offers axial pore, bearing support offers the hermetic seal interface communicated with described axial pore; Also comprise and to be positioned at outside spindle nose guard circle, to stir inside barrel and the inner hermetic seal chamber communicated with teflon packing, this hermetic seal chamber communicates with described axial pore.
Good effect of the present utility model is: first sealing adopts baffle ring, teflon packing and spindle nose guard circle; second sealing adopts yellow glue, blue glue, floating seal and outside framework oil seal, and the hermetic seal chamber that formation one is airtight between first sealing and second sealing forms three seals.These device installation and maintenance are easy, and cost is low, and disassembling, assembling and replacing is convenient, effectively improves agitator shaft end seal, and can significantly improve the working life of sealing mechanism.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
As shown in Figure 1, embodiment of the present utility model comprises stirring shaft 11, is arranged on the change hub 9 on stirring shaft 11 by flat key 6, is provided with O shape circle 7 between stirring shaft 11 and change hub 9.Also comprise the bearing support 16 being arranged on and stirring on barrel 18, be provided with blue glue 14 between change hub 9 and bearing support 16, the interior edge face of bearing support 16 is pressed on the outer side surface stirring barrel 18 by asbestos packing 17.Also comprise the outside framework oil seal 12 be installed between stirring shaft 11 and bearing cap 10 and the floating seal 13 be installed between change hub 9 and bearing cap 10.
Embodiment of the present utility model also comprises the spindle nose guard circle 1 that is bolted and is installed on and stirs barrel 18 inner side surface and is bolted the baffle ring 4 being installed on spindle nose guard circle 1 inner side surface, and at spindle nose guard circle 1, be provided with teflon packing 5 between baffle ring 4 and stirring shaft 11.Also comprise and be fixed on yellow glue 2 on bearing support 16 by locking steel ring 8, between yellow glue 2 and change hub 9, producing floating compression.
Described stirring barrel 18 offers axial pore, bearing support 16 offers the hermetic seal interface 15 communicated with described axial pore.Embodiment of the present utility model also comprises and to be positioned at outside spindle nose guard circle 1, to stir inside the barrel 18 and inner hermetic seal chamber 3 communicated with teflon packing 5, and this hermetic seal chamber 3 communicates with described axial pore.During use, in hermetic seal chamber 3, pass into pressurized gas by hermetic seal interface 15 and described axial pore, the pressed gas in hermetic seal chamber 3 blows to mixing drum side along the micro-gap between teflon packing 5 and stirring shaft 11, plays hermetic seal effect.
Baffle ring 4, teflon packing 5 and spindle nose guard circle 1 form first sealing; yellow glue 2, blue glue 14, floating seal 13 and outside framework oil seal 12 form second sealing; the hermetic seal chamber 3 that formation one is airtight between first sealing and second sealing forms three seals; bearing cap 10 has oil inlet hole to second sealed oiling; bearing support 16 has hermetic seal interface 15, to three seals air feed.
By integral to outside framework oil seal 12, floating seal 13, bearing cap 10, bearing support, yellow glue 2, blue glue 14, O shape circle 7, change hub 9 and locking steel ring 8 assembled in advance composition second sealing, single-piece is avoided to operate on equipment, in order to ensure assembly precision, the especially gap precision of floating seal 13.After teflon packing 5 being filled in spindle nose guard circle 1 during general assembly; fix baffle ring 4; be fixed on assembling asbestos packing 17 on complete second sealing gasket on stirring barrel 18 again, thus the hermetic seal chamber 3 that formation one is airtight between first sealing with second sealing forms three seals.
Claims (3)
1. a seal device for concrete mixer; comprise stirring shaft (11); be arranged on the change hub (9) on stirring shaft (11) and be arranged on the bearing support (16) stirred on barrel (18); it is characterized in that: also comprise the spindle nose guard circle (1) that is installed on and stirs barrel (18) inner side surface and be installed on the baffle ring (4) of spindle nose guard circle (1) inner side surface, and at spindle nose guard circle (1), be provided with teflon packing (5) between baffle ring (4) and stirring shaft (11).
2. seal device for concrete mixer according to claim 1, is characterized in that: also comprise and be fixed on yellow glue (2) on bearing support (16) by locking steel ring (8), producing floating compression between yellow glue (2) and change hub (9).
3. seal device for concrete mixer according to claim 1 and 2, is characterized in that: described stirring barrel (18) offers axial pore, bearing support (16) offers the hermetic seal interface (15) communicated with described axial pore; Also comprise and be positioned at inside spindle nose guard circle (1) outside, stirring barrel (18) and the inner hermetic seal chamber (3) communicated with teflon packing (5), this hermetic seal chamber (3) communicates with described axial pore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520217469.0U CN204533531U (en) | 2015-04-13 | 2015-04-13 | A kind of seal device for concrete mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520217469.0U CN204533531U (en) | 2015-04-13 | 2015-04-13 | A kind of seal device for concrete mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204533531U true CN204533531U (en) | 2015-08-05 |
Family
ID=53747540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520217469.0U Expired - Fee Related CN204533531U (en) | 2015-04-13 | 2015-04-13 | A kind of seal device for concrete mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204533531U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953348A (en) * | 2019-11-19 | 2020-04-03 | 中联重科股份有限公司 | Mixer and axle head seal structure, composite seal circle thereof |
-
2015
- 2015-04-13 CN CN201520217469.0U patent/CN204533531U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953348A (en) * | 2019-11-19 | 2020-04-03 | 中联重科股份有限公司 | Mixer and axle head seal structure, composite seal circle thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20170413 |