CN102537368B - Backflow type main shaft sealing device - Google Patents
Backflow type main shaft sealing device Download PDFInfo
- Publication number
- CN102537368B CN102537368B CN201110436314.2A CN201110436314A CN102537368B CN 102537368 B CN102537368 B CN 102537368B CN 201110436314 A CN201110436314 A CN 201110436314A CN 102537368 B CN102537368 B CN 102537368B
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- CN
- China
- Prior art keywords
- main shaft
- pressing plate
- oil sealing
- supporting sleeve
- stuffing box
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- 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
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- Sealing Devices (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention relates to a backflow type main shaft sealing device which comprises a paddle bearing sleeve sleeved at the outer part of a main shaft, wherein the outer part of the paddle bearing sleeve is sleeved with a sealing sleeve; the upper end of the sealing sleeve is connected with a material barrel of a mixing machine; a plurality of oil seals are sleeved at the outer part of the sealing sleeve; an oil seal seat is sleeved at the outer part of each oil seal; an oil seal pressing plate is arranged at the upper end of the oil seal seat; a ring part is arranged at the inner side of the lower end of the oil seal seat; the diameter of an inner hole of the ring part is the same as that of the main shaft; the lower end of the ring part is hermetically connected on a projecting part at the bottom of the main shaft; and the lower end of the paddle bearing sleeve is hermetically connected to the upper end of the ring part. The backflow type main shaft sealing device is suitable for the sealing of the main shaft in the high-speed mixing machine, and the sealing effect is better.
Description
Technical field
The present invention relates to the main shaft sealing device in a kind of high-speed mixer.
Background technique
Main shaft sealing device in the high-speed mixer using at present, its structure as shown in Figure 2, comprise the blade supporting sleeve 2 that is set in main shaft 1 outside, the bottom of blade supporting sleeve 2 is shelved on the bump 11 of main shaft 1 bottom, the outer cover of blade supporting sleeve 2 is provided with oil sealing base 3, the upper end arranged outside of oil sealing base 3 has annular boss 31, annular boss 31 is connected with the barrel 4 of mixing machine, the inner side, lower end of oil sealing base 3 is provided with annulus portion 32, the diameter of bore of annulus portion 32 is not less than the external diameter of blade supporting sleeve 2, between oil sealing base 3 and blade supporting sleeve 2, there is annular space, in annular space, be disposed with from top to bottom polytetrafluoro seal ring 5 and several oil sealings 6, the upper end wall of the upper-end surface of polytetrafluoro seal ring 5 and oil sealing base 3 flushes.
The shortcoming of above-mentioned main shaft sealing device is: after long-term use, polytetrafluoro seal ring 5 and oil sealing 6 can be worn, and make to exist between polytetrafluoro seal ring 5 and oil sealing and blade supporting sleeve 2 gap, now the material in mixing machine barrel 4 can flow in this gap and trickle downwards very swimmingly to the outside of mixing machine, and main shaft seal effect is poor.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of sealing effect good backflow type main shaft sealing device.
For addressing the above problem, the technical solution used in the present invention is: backflow type main shaft sealing device, comprise the blade supporting sleeve that is set in main shaft outside, the outer cover of described blade supporting sleeve is provided with stuffing box gland, the upper end of stuffing box gland is connected with the barrel of mixing machine, the outer cover of stuffing box gland is provided with several oil sealings, the outer cover of oil sealing is provided with oil sealing base, the upper end of oil sealing base is provided with oil sealing pressing plate, the inner side, lower end of oil sealing base is provided with annulus portion, the diameter of bore of annulus portion and main shaft equal diameters, the lower end of annulus portion is sealedly connected on the bump of main shaft bottom, the lower end of blade supporting sleeve is sealedly connected on the upper end of annulus portion.
On the part outer wall of described blade supporting sleeve, be provided with screw thread, the rotation direction of screw thread is identical with the rotation direction of main shaft, and the outer rim of screw thread contacts with the inwall of stuffing box gland.
The outside of described blade supporting sleeve is also arranged with polytetrafluoro seal ring, polytetrafluoro seal ring is between stuffing box gland top and blade supporting sleeve, the top of stuffing box gland is provided with pressing plate, the inner side of pressing plate is pressed on polytetrafluoro seal ring, the arranged outside of pressing plate has pressing plate set screw, and pressing plate set screw connects the barrel of pressing plate, stuffing box gland and mixing machine.
The annulus portion inner side of described oil sealing base is provided with dovetail groove.
The invention has the beneficial effects as follows: above-mentioned backflow type main shaft sealing device, it is simple in structure, easy for installation.It makes material need to pass through the backflow-type movement process first making progress again downwards, and need to just can complete at very large pressure with in the situation that oil sealing weares and teares by changing the motion path of material, and sealing effect is better.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the main shaft sealing device structural representation in current the used high-speed mixer described in background technique;
In Fig. 1: 1, main shaft, 11, bump, 2, blade supporting sleeve, 3, oil sealing base, 32, annulus portion, 4, the barrel of mixing machine, 5, polytetrafluoro seal ring, 6, oil sealing, 7, stuffing box gland, 8, oil sealing pressing plate, 9, screw thread, 10, pressing plate, 12, pressing plate set screw, 13, dovetail groove, 14, oil sealing pressing plate set screw;
In Fig. 2: 1, main shaft, 11, bump, 2, blade supporting sleeve, 3, oil sealing base, 31, annular boss, 32, annulus portion, 4, the barrel of mixing machine, 5, polytetrafluoro seal ring, 6, oil sealing.
Embodiment
Below by specific embodiment, backflow type main shaft sealing device of the present invention is described in further detail.
As shown in Figure 1, backflow type main shaft sealing device, comprise the blade supporting sleeve 2 that is set in main shaft 1 outside, the outer cover of described blade supporting sleeve 2 is provided with stuffing box gland 7, the upper end of stuffing box gland 7 is connected with the barrel of mixing machine 4, the outer cover of stuffing box gland 7 is provided with several oil sealings 6, the outer cover of oil sealing 6 is provided with oil sealing base 3, the upper end of oil sealing base 3 is provided with oil sealing pressing plate 8, oil sealing pressing plate 8 fixes by oil sealing pressing plate set screw 14 and oil sealing base 3, thereby oil sealing 6 is pressed between oil sealing base 3 and stuffing box gland 7, the inner side, lower end of oil sealing base 3 is provided with annulus portion 32, the diameter of bore of annulus portion 32 and main shaft 1 equal diameters, the lower end of annulus portion 32 is sealedly connected on the bump 11 of main shaft 1 bottom, the lower end of blade supporting sleeve 2 is sealedly connected on the upper end of annulus portion 32.
As preferred version, on the part outer wall of described blade supporting sleeve 2, be provided with screw thread 9, the rotation direction of screw thread 9 is identical with the rotation direction of main shaft 1, and the outer rim of screw thread 9 contacts with the inwall of stuffing box gland 7.
As preferred version, the outside of described blade supporting sleeve 2 is also arranged with polytetrafluoro seal ring 5, polytetrafluoro seal ring 5 is between stuffing box gland 7 tops and blade supporting sleeve 2, the top of stuffing box gland 7 is provided with pressing plate 10, the inner side of pressing plate 10 is pressed on polytetrafluoro seal ring 5, the arranged outside of pressing plate 10 has pressing plate set screw 12, and pressing plate set screw 12 connects the barrel 4 of pressing plate 10, stuffing box gland 7 and mixing machine.
As preferred version, annulus portion 32 inner sides of described oil sealing base 3 are provided with dovetail groove 13.
Working principle of the present invention is: above-mentioned backflow type main shaft sealing device, during use, blade supporting sleeve 2, oil sealing base 3 and pressing plate 10 are together with main shaft 1 synchronous rotary.After long-term use, the inner side of polytetrafluoro seal ring 5 is worn, and make to exist between polytetrafluoro seal ring 5 and blade supporting sleeve 2 gap, now the material in mixing machine barrel 4 can flow in this gap and trickling downwards, enter oil sealing base 3 bottoms, the material that arrives oil sealing base 3 bottoms must move upward and pass oil sealing 6 seal areas and could trickle to the outside of mixing machine, this material movement process need first making progress again is downwards at very large pressure, and the in the situation that of oil sealing 6 wearing and tearing, just can complete, sealing effect is better.
In addition, when the downward trickling of material enters oil sealing base 3 bottom, when the screw thread 9 on the part outer wall of blade supporting sleeve 2 rotates along with blade supporting sleeve 2, under the effect of screw thread 9, produce thrust upwards, thereby the material flowing in gap upwards can be pushed away, stop the dirty of most of material, when having fraction material to flow into the bottom of oil sealing base 3, the dovetail groove 13 that annulus portion 32 inner sides of oil sealing base 3 arrange can stop material, effectively prevents that material from entering oil sealing 6 seal areas.
The above embodiments are principle and the effect thereof of illustrative the invention only, and the embodiment of part utilization, but not for limiting the present invention; It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (4)
1. backflow type main shaft sealing device, comprise the blade supporting sleeve that is set in main shaft outside, it is characterized in that: the outer cover of described blade supporting sleeve is provided with stuffing box gland, the upper end of stuffing box gland is connected with the barrel of mixing machine, the outer cover of stuffing box gland is provided with several oil sealings, the outer cover of oil sealing is provided with oil sealing base, the upper end of oil sealing base is provided with oil sealing pressing plate, the inner side, lower end of oil sealing base is provided with annulus portion, the diameter of bore of annulus portion and main shaft equal diameters, the lower end of annulus portion is sealedly connected on the bump of main shaft bottom, the lower end of blade supporting sleeve is sealedly connected on the upper end of annulus portion.
2. backflow type main shaft sealing device according to claim 1, is characterized in that: on the part outer wall of described blade supporting sleeve, be provided with screw thread, the rotation direction of screw thread is identical with the rotation direction of main shaft, and the outer rim of screw thread contacts with the inwall of stuffing box gland.
3. backflow type main shaft sealing device according to claim 1 and 2, it is characterized in that: the outside of described blade supporting sleeve is also arranged with polytetrafluoro seal ring, polytetrafluoro seal ring is between stuffing box gland top and blade supporting sleeve, the top of stuffing box gland is provided with pressing plate, the inner side of pressing plate is pressed on polytetrafluoro seal ring, the arranged outside of pressing plate has pressing plate set screw, and pressing plate set screw connects the barrel of pressing plate, stuffing box gland and mixing machine.
4. backflow type main shaft sealing device according to claim 1 and 2, is characterized in that: the annulus portion inner side of described oil sealing base is provided with dovetail groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110436314.2A CN102537368B (en) | 2011-12-23 | 2011-12-23 | Backflow type main shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110436314.2A CN102537368B (en) | 2011-12-23 | 2011-12-23 | Backflow type main shaft sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102537368A CN102537368A (en) | 2012-07-04 |
| CN102537368B true CN102537368B (en) | 2014-08-20 |
Family
ID=46345010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110436314.2A Expired - Fee Related CN102537368B (en) | 2011-12-23 | 2011-12-23 | Backflow type main shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102537368B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644301B (en) * | 2013-12-07 | 2016-06-08 | 浙江长城减速机有限公司 | Filler flat seal |
| CN108411372A (en) * | 2018-05-04 | 2018-08-17 | 常州比太黑硅科技有限公司 | A kind of vacuum chamber intracavitary elevating mechanism |
| CN113198343A (en) * | 2021-05-06 | 2021-08-03 | 任伟 | Powder stirring device for lithium battery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1170211A1 (en) * | 1984-01-09 | 1985-07-30 | Научно-Исследовательский И Конструкторско-Технологический Институт Эмалированного Химического Оборудования | Mixer shaft sealing unit |
| CN2218285Y (en) * | 1994-09-10 | 1996-01-24 | 李从平 | U-shape screw sealing device |
| CN2268153Y (en) * | 1996-11-04 | 1997-11-19 | 江苏白熊机械(集团)公司 | Mainshaft sealing device of mixing machine |
| CN102182829A (en) * | 2011-05-15 | 2011-09-14 | 徐州衡器厂有限公司 | Main shaft sealing device of spiral conveyer |
| CN202371177U (en) * | 2011-12-23 | 2012-08-08 | 张家港市一顺机械有限公司 | Backflow type spindle sealing device |
-
2011
- 2011-12-23 CN CN201110436314.2A patent/CN102537368B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1170211A1 (en) * | 1984-01-09 | 1985-07-30 | Научно-Исследовательский И Конструкторско-Технологический Институт Эмалированного Химического Оборудования | Mixer shaft sealing unit |
| CN2218285Y (en) * | 1994-09-10 | 1996-01-24 | 李从平 | U-shape screw sealing device |
| CN2268153Y (en) * | 1996-11-04 | 1997-11-19 | 江苏白熊机械(集团)公司 | Mainshaft sealing device of mixing machine |
| CN102182829A (en) * | 2011-05-15 | 2011-09-14 | 徐州衡器厂有限公司 | Main shaft sealing device of spiral conveyer |
| CN202371177U (en) * | 2011-12-23 | 2012-08-08 | 张家港市一顺机械有限公司 | Backflow type spindle sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102537368A (en) | 2012-07-04 |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20201223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |