CN201068883Y - Pump spindle seal device - Google Patents
Pump spindle seal device Download PDFInfo
- Publication number
- CN201068883Y CN201068883Y CNU2007200348087U CN200720034808U CN201068883Y CN 201068883 Y CN201068883 Y CN 201068883Y CN U2007200348087 U CNU2007200348087 U CN U2007200348087U CN 200720034808 U CN200720034808 U CN 200720034808U CN 201068883 Y CN201068883 Y CN 201068883Y
- Authority
- CN
- China
- Prior art keywords
- pump
- side wall
- oil chamber
- grease chamber
- pump shaft
- 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 - Lifetime
Links
Abstract
The utility model relates to a sealing device of a pump axle, which is provided with an oil chamber 1 and an oil chamber 2. A supporting clapboard is arranged between two oil chambers. A pump axle passes through two oil chambers. The external side wall of the oil chamber 1 is connected with the shell of a pump motor. A bearing is arranged between the external side wall of the oil chamber 1 and the pump axle; and a frame oil seal is arranged between the external side wall of the oil chamber 2 and the pump axle. In the internal cavity of the oil chamber 1, a mechanical sealing device is arranged between the side wall of the oil chamber 1 and the pump axle. In the internal cavity of the oil chamber 2, mechanical sealing devices are arranged between the support clapboard and the pump axle, between the inside of the side wall of the oil chamber 2 and the pump axle. Since double oil chambers and three sets of mechanical sealing devices are arranged, the mechanical seal in the oil chamber is basically not affected by the changes of the medium pressure. The system in axle direction of the whole rotary axle is more reliable, thereby guaranteeing that a sewage submarine pump can keep working for long time in complex media.
Description
Technical field
The utility model relates in a kind of pumping liquid medium process, along the axial leakage preventer of rotation, particularly a kind of axial seal arrangement of rotation that is applicable to proof submersible sand discharging pump.
Background technique
Existing submersible pump contains proof submersible sand discharging pump, and the mechanical seal form is all adopted in the axial seal of its running shaft.Or adopt an external single face mechanical seal, or adopt built-in a pair of face mechanical seal or two single face machinery seal combination, with an oil-filled lubricated and cooling in grease chamber.There are two problems in above-mentioned mechanical seal form; The one, mechanical seal must have an end face towards fed sheet of a media, directly bears the pressure of medium, and sets the pre-pressure of the spring of mechanical seal according to this.Pre-pressure of the spring is bigger than normal, and the dynamic and static ring sealing face frictional heat of mechanical seal is big, and the rubber of mechanical seal is easily aging, carbonization loses sealability; Pre-pressure of the spring is less than normal, and then sealing effect descends.In the actual conditions, medium changes for the pressure of mechanical seal end surface, so the form of installing and using of existing mechanical seal can only be accomplished basic sealing, still has leakage.The 2nd, submersible pump is proof submersible sand discharging pump particularly, and the medium composition of being carried is very complicated, contains acid, contains alkali, also has considerable solid formation such as mud, sand etc., and in the radially uneven swing of pump impeller, during a spot of axial float, sealing system certainly leads to dielectric leakage.Above-mentioned two problems, the workplace that can not shut down for requiring continuous operation several thousand hours can be to adapt to its working condition requirement.
Summary of the invention
The technical problems to be solved in the utility model is at the deficiencies in the prior art, and having proposed a kind of pressure medium that is not subjected to influences, and can guarantee the pump shaft sealing device that does not leak in the continuous fed sheet of a media process of pump.
The technical problems to be solved in the utility model is achieved through the following technical solutions, a kind of pump shaft sealing device, be characterized in: it is provided with I of grease chamber and the II of grease chamber, be provided with supporting clapboard between two grease chambeies, pump shaft passes in two grease chambeies, the outer side wall of the I of grease chamber and pump motor housing join, between the outer side wall of the I of grease chamber and the pump shaft bearing is housed, between the outer side wall of the II of grease chamber and the pump shaft outside framework oil seal is housed, in the inner chamber of the I of grease chamber, be provided with the mechanical seal device that is contained between the I of grease chamber sidewall and the pump shaft, in the inner chamber of the II of grease chamber between supporting clapboard and the pump shaft, all be provided with mechanical seal device between the II of grease chamber inside sidewalls and the pump shaft.
The technical problems to be solved in the utility model can also come by the following technical programs further to realize that two mechanical seal device in the II of the grease chamber inner chamber adopt two single face machinery seal combination, or adopt a two-sided mechanical seal device.
Working procedure of the present utility model is as follows: the motor-driven rotatable shaft rotation, pump impeller begins fed sheet of a media, outside framework oil seal in the rotating shaft stops solid formation, make it to enter the end face of the mechanical seal in the II of grease chamber, and reduce the pressure medium that it bears, both made because the variation of pressure medium, a spot of dielectric leakage is to the II of grease chamber, mechanical seal meeting between supporting clapboard and the pump shaft intercepts medium once more to the I of grease chamber internal leakage, when the medium of the II of grease chamber endoluminal leak reach a certain amount of after, having micro-medium enters in the I of grease chamber, but because the suffered external agency pressure of mechanical seal in the I of grease chamber is zero substantially, so the mechanical sealing performance in the I of grease chamber is more stable, reliably, guarantee that medium can not leak in the motor cavity.
The utility model compared with prior art, owing to be provided with two grease chambeies, three groups of mechanical seals, make the interior mechanical seal of the I of grease chamber not be subjected to the influence of pressure medium variation substantially, so the sealing of the axial system of whole running shaft is more reliable, can guarantee proof submersible sand discharging pump in the medium of complexity, for a long time operation continuously.
Description of drawings
Fig. 1 is a structure diagram of the present utility model.
Embodiment
A kind of pump shaft sealing device adopts two grease chambeies multi-sealing structure.It is provided with I of grease chamber 4 and the II of grease chamber 10, be provided with supporting clapboard 6 between two grease chambeies 4,10, pump shaft 1 passes in two grease chambeies 4,10, outer side wall 11 and the pump motor housing of the I of grease chamber join, outer side wall 11 is the flange of band seam, outer side wall 11 is tightly connected by O-ring seals with the motor casing flange, between the outer side wall 11 of the I of grease chamber and the pump shaft 1 bearing 2 is housed, between the outer side wall 8 of the II of grease chamber and the pump shaft 1 outside framework oil seal 9 is housed, after pump shaft 1 passes from the II of grease chamber, and be connected with pump impeller with key in its outer end.In the inner chamber of the I of grease chamber, be provided with the mechanical seal device 3 that is contained between the I of grease chamber sidewall and 11 pump shafts 1, in the inner chamber of the II of grease chamber between supporting clapboard 6 and the pump shaft 1, the II of grease chamber sidewall 8 is inboard and pump shaft 1 between all be provided with mechanical seal device 5,6.Inject cutting oil among the I of grease chamber, the II of grease chamber.Two mechanical seal device 5,6 in the II of the grease chamber inner chamber adopt two single face machinery seal combination, or adopt a two-sided mechanical seal device.
Claims (2)
1. pump shaft sealing device, it is characterized in that: it is provided with I of grease chamber (4) and the II of grease chamber (10), be provided with supporting clapboard (6) between two grease chambeies, pump shaft (1) passes in two grease chambeies, the outer side wall (11) of the I of grease chamber (4) joins with the pump motor housing, between the outer side wall (11) of the I of grease chamber (4) and the pump shaft (1) bearing (2) is housed, between the outer side wall (8) of the II of grease chamber (10) and the pump shaft (1) outside framework oil seal (9) is housed, in the inner chamber of the I of grease chamber (4), be provided with the mechanical seal device (3) that is contained between the I of grease chamber outer side wall (11) and the pump shaft (1), between supporting clapboard in the inner chamber of the II of grease chamber (10) (6) and the pump shaft (1), be provided with mechanical seal device (5 between the II of grease chamber outer side wall (8) inboard and the pump shaft (1), 6).
2. pump shaft sealing device according to claim 1 is characterized in that: two mechanical seal device (5,6) in the II of grease chamber (10) inner chamber adopt two single face machinery seal combination, or adopt a two-sided mechanical seal device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200348087U CN201068883Y (en) | 2007-02-16 | 2007-02-16 | Pump spindle seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200348087U CN201068883Y (en) | 2007-02-16 | 2007-02-16 | Pump spindle seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201068883Y true CN201068883Y (en) | 2008-06-04 |
Family
ID=39490267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200348087U Expired - Lifetime CN201068883Y (en) | 2007-02-16 | 2007-02-16 | Pump spindle seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201068883Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179254A (en) * | 2015-07-17 | 2015-12-23 | 安徽埃斯克制泵有限公司 | Novel double-oil-chamber self-priming sewage pump |
-
2007
- 2007-02-16 CN CNU2007200348087U patent/CN201068883Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179254A (en) * | 2015-07-17 | 2015-12-23 | 安徽埃斯克制泵有限公司 | Novel double-oil-chamber self-priming sewage pump |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080604 |