CN203500099U - Low-pressure rotary shaft sealing device - Google Patents
Low-pressure rotary shaft sealing device Download PDFInfo
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- CN203500099U CN203500099U CN201320580902.8U CN201320580902U CN203500099U CN 203500099 U CN203500099 U CN 203500099U CN 201320580902 U CN201320580902 U CN 201320580902U CN 203500099 U CN203500099 U CN 203500099U
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- oil
- sealing
- sealed cavity
- low
- seal sleeve
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Abstract
The utility model discloses a low-pressure rotary shaft sealing device, and the device comprises a sealed cavity, an oil seal sleeve, and a gland disposed at one end of the sealed cavity. The oil seal sleeve is disposed inside the sealed cavity. The sealed cavity is provided with an oil injection hole. An oil cup is disposed at the oil injection hole. The interior of the oil seal sleeve is provided with a plurality of Y-shaped oil seals and a plurality of oil-distributing rings, and the Y-shaped oil seals and the oil-distributing rings are arranged alternatively in the oil seal sleeve. The Y-shaped oil seals are respectively in an elastic structure with an axial pushing force. Each Y-shaped oil seal is equipped with a uniform opening which is opposite to the corresponding oil-distributing ring. Lubricating grease entering from the oil injection hole can uniformly enter into the Y-shaped oil seals through the oil-distributing rings. The gland, the oil seal sleeve and the sealed cavity are connected through bolts. The device provided by the utility model is used for low-pressure working conditions, and can effectively guarantee that the device achieves no-leakage or micro-leakage sealing effects for a long period in the service. Compared with a conventional sealing structure, the device is low in power loss, saves investment, is environment friendly in sealing materials, and can achieve that no maintenance is needed or only simple maintenance is needed in a suitable working condition.
Description
Technical field
The utility model belongs to technical field of sealing technology, relates to a kind of low pressure shaft sealing device.
Background technique
In industrial production, the conventional liq medium that centrifugal pump is carried, in the majority mainly with the flow process of short-distance and medium-distance, low lift class, for delivery of the lower operating mode of pressure.At present, for the rotating shaft sealing of centrifugal pump in this type of flow process, be nearly all to adopt traditional packing seal, mechanical seal, the leakage control that the three class sealing means such as dynamic seal+filler (mechanical seal) carry out motive sealing.
In three class sealing means, packing seal is to invest a kind of axial movable sealing structure of saving, but the frictional power loss causing due to axial end specific pressure is large, therefore need regular adjustment and maintenance, need to force cooling and rinse, can only reach tiny leakage effect, and filler being shorter working life, easily the diameter of axle of sealing place is caused to wearing and tearing, the old filler after damage is difficult for disposing.Mechanical seal is to invest more expensive radial moving sealing structure, and its frictional power loss is low, and favorable sealing property can reach without leakage effect.Though the adaptability to various operating modes is wider, because its accuracy of manufacturing is high, expensive, while therefore overhauling, require mounting technology difficulty higher, the meticulous maintenance and operation of daily need, needs to force to rinse and cooling could operation.Dynamic seal is to rely on rotor to drive fluid to produce centrifugal force, makes rotating shaft end form the motility seal arrangement that negative pressure overcomes leakage.During its running, can reach zero leakage, without wearing and tearing, the life-span is long.But it is large that its shortcoming is power consumpiton, must auxiliary and parking sealer.
This three classes rotating shaft sealing mode is in fact all artificial employing adjusting axles to or face pressure radially, judge whether effectively to reach control function and the effect of rotating shaft sealing.Face pressure is little, and seal life can extend, but easily leaks; Face pressure is large, good sealing effect, but Sealing is easy to wear, and working life is short.Therefore, people's technical ability, sense of responsibility and working experience significantly left and right its service life and sealing effect quality.
Model utility content
In order to address the above problem, in industrial production centrifugal pump application, Seal cage pressure is lower than the more actual conditions of 0.2MPa operating mode, the utility model provides a kind of low pressure shaft sealing device, thereby reaches the effect of good sealing and low power consumption, low cost, non-maintaining and energy-conserving and environment-protective.
The utility model is achieved by following technical solution.
A kind of low pressure shaft sealing device, comprise Seal cage, oil-sealing sleeve and be arranged at the gland of Seal cage one end, described oil-sealing sleeve is arranged on Seal cage inside, on described Seal cage, be provided with oil hole, at oil hole, place is provided with lubricating cup, it is characterized in that: in described oil-sealing sleeve, be provided with some Y type oil sealings and oil distributing ring, described Y type oil sealing and oil distributing ring are alternately arranged in oil-sealing sleeve.
Described Y type oil sealing is the elastic structure with radial thrust.
Described oil-sealing sleeve processing profile is I-shaped.
On described oil-sealing sleeve, there is even perforate.
Described Seal cage, oil-sealing sleeve and gland are bolted.
The beneficial effects of the utility model are:
Compared with prior art, the utility model is mainly to utilize Y type fluorine rubber seal lip limit and have the radially adhesion of high light cleanliness axle journal to form line to contact and seal, and by the Y type oil sealing tandem compound that there is radial force elastic structure by many, within the Sealing normal service life phase, can reach and not leak or tiny leakage effect, effectively improve production efficiency of equipment, seal arrangement is in parking and running, the adhesion of oil seal lip can increase and decrease automatically according to compression degree, reach the object of the shutoff medium that reduces pressure step by step, and kept suitable face pressure, friction horsepower is little, heat energy is low, do not need additional cooling and flushing, reached good energy-saving effect, sealing part abrasion is easy to recycling disposal after changing, can not cause secondary pollution to environment, reached good environment protection effect, and the utility model is simple in structure in addition, low cost of manufacture, be easy to assembling, the features such as easy maintenance.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
In figure: 1-Seal cage, 2-oil hole, 3-oil-sealing sleeve, 4-oil distributing ring, 5-Y type oil sealing, 6-lubricating cup, 7-gland, 8-pump shaft, 9-pump housing end.
Embodiment
Below in conjunction with accompanying drawing, further describe the technical solution of the utility model, but described in claimed scope is not limited to.
As shown in Figure 1, a kind of low pressure rotating shaft sealing described in the utility model, comprise Seal cage 1, oil-sealing sleeve 3 and be arranged at the gland 7 of Seal cage 1 one end, described oil-sealing sleeve 3 is arranged on Seal cage 1 inside, on described Seal cage 1, be provided with oil hole 2, at oil hole 2 place's lubricant configuration screw-down type grease cups 6, and regularly by oil hole 2 places, inject lubricating grease.
On described oil-sealing sleeve 3, there is even perforate, in oil-sealing sleeve 3, be provided with 3 to 6 Y type oil sealings 5, in the middle of every two Y type oil sealings 5, join an oil distributing ring 4, during installation the position of oil distributing ring 4 all with oil-sealing sleeve 3 on perforate over against, the lubricating grease entering from oil hole 2 can be evenly distributed to Seal cage 1 inside through oil distributing ring 4, reaches the effect of lubrication and cooling, without the extra type of cooling, also can assist shutoff, greatly reduce user cost.
Described oil-sealing sleeve 3 is processed as I-shaped, is embedded in Seal cage 1, and oil-sealing sleeve 3 outward flanges coordinate with Seal cage inwall, and forming section cavity between stage casing and Seal cage 1 ensures larger oiling agent storage space.
Pump shaft 8 surfaces are close on described Y type oil sealing 5 lip limits, described Y type oil sealing 5 is selected Y type fluorine rubber seal, for thering is the elastic structure of radial thrust, in oil-sealing sleeve 3 by a plurality of Y type oil sealing 5 tandem compounds, during installation, lean on the pump housing end installation dorsad of first oil sealing of pump housing end, to last, all towards pump housing end, install for second, oiling agent can be blocked preferably in Seal cage 1, axial and fed sheet of a media is isolated, reach good sealing effect, even if sealing is wearing and tearing slightly, also can be supplemented because of the elastic structure of Y type oil sealing 5, keep oil seal lip to contact with the line on pump shaft 8 surfaces, difficult leakage, do not need often to carry out maintaining yet.
Described gland 7, oil-sealing sleeve 3 and Seal cage 1 are bolted, and moving axially by Y type oil sealing 5 in gland 7 restriction Seal cages.
This sealing configuration carries out FT function test in different operating modes in many places such as horizontal sludge pump, clean waterpump, double suction circulating water pump, phosphoric acid,diluted transhipment pump, sewage pumps respectively and uses observation, in the working condition of Seal cage medium pressure liquid below 0.2MPa, below the condition of medium solid contents 10%, sealing effect is very outstanding, and seldom safeguards.Especially three kinds of dynamic seal class horizontal pumps, rear suction horizontal pump, double-sucking type pump, meet in the pump class of operating mode, this device is splendid as parking sealer effect.
Claims (5)
1. a low pressure shaft sealing device, comprise Seal cage (1), oil-sealing sleeve (3) and be arranged at the gland (7) of Seal cage (1) one end, described oil-sealing sleeve (3) is arranged on Seal cage (1) inside, on described Seal cage (1), be provided with oil hole (2), at oil hole (2), locate to be provided with lubricating cup (6), it is characterized in that: in described oil-sealing sleeve (3), be provided with some Y type oil sealings (5) and oil distributing ring (4), described Y type oil sealing (5) and oil distributing ring (4) are alternately arranged in oil-sealing sleeve (3).
2. a kind of low pressure shaft sealing device according to claim 1, is characterized in that: described Y type oil sealing (5) is for having the elastic structure of radial thrust.
3. a kind of low pressure shaft sealing device according to claim 1, is characterized in that: described oil-sealing sleeve (3) processing profile is I-shaped.
4. a kind of low pressure shaft sealing device according to claim 3, is characterized in that: described oil-sealing sleeve has even perforate on (3).
5. a kind of low pressure shaft sealing device according to claim 1, is characterized in that: described Seal cage (1), oil-sealing sleeve (3) and gland (7) are bolted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320580902.8U CN203500099U (en) | 2013-09-18 | 2013-09-18 | Low-pressure rotary shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320580902.8U CN203500099U (en) | 2013-09-18 | 2013-09-18 | Low-pressure rotary shaft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500099U true CN203500099U (en) | 2014-03-26 |
Family
ID=50331082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320580902.8U Expired - Fee Related CN203500099U (en) | 2013-09-18 | 2013-09-18 | Low-pressure rotary shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500099U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426197A (en) * | 2019-09-17 | 2019-11-08 | 思达耐精密机电（常熟）有限公司 | A kind of device of batch validation oil seal product durability |
-
2013
- 2013-09-18 CN CN201320580902.8U patent/CN203500099U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426197A (en) * | 2019-09-17 | 2019-11-08 | 思达耐精密机电（常熟）有限公司 | A kind of device of batch validation oil seal product durability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUIZHOU KAILIN GROUP CO., LTD. Free format text: FORMER NAME: KAILIN (GROUP) CO., LTD., GUIZHOU |
|
| CP03 | Change of name, title or address |
Address after: No. 237 Jinyang City Kailin Lake District Road 550009 Guizhou city of Guiyang Province Patentee after: Phosphorylcholine group limited-liability company is opened in Guizhou Address before: 550002 Guizhou city in Guiyang Province, the Haitian Road No. 203 building 12 layer Patentee before: Guizhou Kailin (Group) Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20200918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |