CN201100269Y - A compound mechanical sealing device for pump - Google Patents
A compound mechanical sealing device for pump Download PDFInfo
- Publication number
- CN201100269Y CN201100269Y CNU2007201169050U CN200720116905U CN201100269Y CN 201100269 Y CN201100269 Y CN 201100269Y CN U2007201169050 U CNU2007201169050 U CN U2007201169050U CN 200720116905 U CN200720116905 U CN 200720116905U CN 201100269 Y CN201100269 Y CN 201100269Y
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- China
- Prior art keywords
- sealing
- ring
- pump
- seal
- pump shaft
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- Expired - Fee Related
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Abstract
The utility model discloses a combined-type mechanical sealing device for pumps, which is arranged between an impeller and a bearing which are arranged on a pump shaft. The combined-type mechanical sealing device comprises a sealing gland bush, a sealing casing body, a pump shaft, a static ring, a dynamic ring and a side impeller, wherein sealing cavity body is formed between the sealing casing body and the sealing gland bush, the pump shaft is arranged in the cavity body, two dynamic rings are respectively sleeved on a pump shaft sleeve, which are sealed with the shaft cover through a sealing ring, one side of the dynamic ring is provided with the static ring, a static ring is fixed in the sealing casing body through a positioning pin, and the other static ring is fixed in the sealing gland bush through the positioning pin, and the side impeller is arranged in a groove on the front end of the casing body. The shaft seal form of the sealing device is a compound shaft seal form that the side impeller is added with double lips to mechanically seal, and meanwhile, and the sealing device adopts oil lubrication, which greatly lowers the abrasion of the abrasion end face of the mechanical sealing, thereby the service span of mechanical sealing is greatly improved.
Description
Technical field
The utility model belongs to the improvement to pump shaft sealing device, relates in particular to the centrifugal mud pump shaft seal.
Background technique
The supporting slurry pump of oil drilling solidifying and controlling device is a SB molding sand pump at present, and this model sand pump is to be opened manufacturer production such as water pump works, the logical water pump works of profit by water pump works, Jiang-Han Area, south.The mechanical seal that this pump adopted is the mechanical seal of single lip formula, and the lubricated form that can adopt according to the working condition in oil field is a mud lubrication.Because of the particular surroundings of oil drilling, employed slurry pump does not have the high-pressure shaft water shutoff, so just can not form the liquid lubrication film between the rotating ring of mechanical seal and stationary ring rubbing surface, thereby mud enters between rotating ring and stationary ring rubbing surface.Sharply wear and tear as lubricated rotating ring and stationary ring rubbing surface with mud,, finally cause mud seriously to be revealed, make the sand pump cisco unity malfunction until inefficacy.
Summary of the invention
The purpose of this utility model is to provide a kind of reduction sealed department bit stream body pressure, prevents shaft sealing leakage, improves the lip seal pump combined type mechanical sealing device in working life.
Technological scheme: a kind of combined type mechanical sealing device, be arranged between the impeller and bearing on the pump shaft, described combined type mechanical sealing device comprises sealing gland, seal casinghousing, pump shaft, stationary ring, rotating ring and sub-propeller, form seal chamber between seal casinghousing and the sealing gland, be provided with pump shaft in the cavity, two rotating rings are set on the pump shaft axle sleeve, by seal ring and sleeve sealing, rotating ring one side is provided with stationary ring, one stationary ring is fixed in the seal casinghousing by locating stud, and by seal ring and seal casinghousing sealing, another stationary ring is fixed in the sealing gland by locating stud, by seal ring and sealing gland sealing, sub-propeller is arranged in the groove of seal casinghousing front end.
The utility model seal arrangement axle envelope form is the composite shaft envelope form that sub-propeller adds the mechanical seal of lips mouth.The characteristics of the utility model seal arrangement axle envelope are that pump does not leak when work, and pump does not leak when shutting down yet.
The utility model seal arrangement, adopted the comparatively lubricated form of science, replaced traditional mud lubrication with oil lubrication, greatly reduce the wearing and tearing of mechanical seal abrasive end face like this, thereby the unlubricated mechanical seal of single lip that has overcome like product causes the rapid wearing and tearing of mechanical seal and causes axle to seal a phenomenon of revealing.Improve the working life of mechanical seal greatly, improved the stability of sealing effect.Be full of the 20# machinery oil in this device for mechanical closed chamber, rotate the fluid rotation that makes inner chamber by axle and produce centrifugal force, be used for forming to the liquid film between lips mouth mechanical friction pair end face and lubricated, the sub-propeller of preposition mechanical seal rotates the negative pressure that forms under the centrifugal action that is produced and greatly reduces the pressure of mud to mechanical seal simultaneously, thereby reaches the effect of sealing.Prevent that mud from entering cavity and damaging lips mouth mechanical friction pair end face.
The sand pump of using this device is the New-generation efficient energy-saving centrifugal mud pump that designs for oil drilling.Compare with the SP type slag slurry pump under liquid that the drilling well of former oil field is used, it is more reasonable to have efficient height, structure, reliable operation, characteristics such as easy to maintenance.The life-span of combined type mechanical sealing device is more than 5 times of SB molding sand pump mechanical sealing.Its advantage is the volumetric efficiency that sand pump was leaked, improved greatly to life-span length, nothing.
Description of drawings
Fig. 1 is the sectional view of the utility model combined type mechanical sealing device plan view;
Fig. 2 is that the utility model Fig. 1 is applied to the plan view on the pump housing.
Embodiment
As shown in Figure 1, combined type mechanical sealing device, comprise sealing gland 4, seal casinghousing 5, pump shaft 12, stationary ring 2,9, rotating ring 3,8 and sub-propeller 7, seal casinghousing is provided with vent, by 6 sealings of ventilation bolt, form seal chamber between seal casinghousing and the sealing gland, be provided with pump shaft in the cavity, two rotating rings 3,8 are set on the pump shaft axle sleeve 11, by seal ring and sleeve sealing, rotating ring one side is provided with stationary ring, and a stationary ring 9 is fixed in the seal casinghousing by locating stud 10, by seal ring and seal casinghousing sealing, another stationary ring 2 is fixed in the sealing gland by locating stud 1, and by seal ring and sealing gland sealing, sub-propeller is arranged in the groove of seal casinghousing front end.
As shown in Figure 2, the sand pump of combined type mechanical sealing device is housed, the pump housing 13 adopts single pump shell structure, has seam to be connected with pump seat 17 usefulness bolts.Impeller 14 front and rear cover plates have back blades.Flow passage components (impeller, the pump housing) adopt the manufacturing of high trade mark magnesium iron.The type of belt drive of this sand pump is the direct connection transmission, and promptly motor 20 drives the sand pump rotation by coupling.Motor 20 and pump are fixed on the base 21.Pump inlet is a substantially horizontal, and from the pump intake direction, the impeller sense of rotation is for being rotated counterclockwise.Combined type mechanical sealing device 16 is arranged between the impeller and bearing on the pump shaft, and seal casinghousing is provided with seam and fixes with the pump housing 13 by backplate 15 and bolt.The bearing structure of carriage is next two bicker contact bearings 19, is used for carrying radial force and bi-directional axial power.The front flatly can only bearing radial force roller bearing 18, thereby improves the kinematic accuracy of bearing rotor.The bearings at both ends gland has the anti-skeleton oil sealing of letting out, prevent dust.
Combined type mechanical sealing device is applied in the mechanical seal of sand pump, sand pump is sand remover, desilter, the eddy flow proportioning device power source in the drilling well solid controlling equipment, the drilling fluid that it will contain solid phase particles injects cyclone separator with certain pressure, to isolate solid phase particles.Sand pump slurry in the pump housing when work flows into the sub-propeller chamber by backplate and the formed annular slot of sub-propeller, slurry is under the sub-propeller centrifugal action, reduced pressure, under the effect of mechanical sealing static ring and seal ring of moving ring, stopped the mud that flows to the mechanical seal chamber at last mechanical seal.This seal arrangement can also be applied to other pump housing.
Claims (1)
1, a kind of pump combined type mechanical sealing device, be arranged between the impeller and bearing on the pump shaft, it is characterized in that: described combined type mechanical sealing device comprises sealing gland (4), seal casinghousing (5), pump shaft (12), stationary ring, rotating ring and sub-propeller (7), form seal chamber between seal casinghousing and the sealing gland, be provided with pump shaft (12) in the cavity, two rotating rings (3,8) be set on the pump shaft axle sleeve, by seal ring and axle sleeve (11) sealing, rotating ring one side is provided with stationary ring, one stationary ring (9) is fixed in the seal casinghousing by locating stud (10), by seal ring and seal casinghousing sealing, another stationary ring (2) is fixed in the sealing gland by locating stud (1), by seal ring and sealing gland sealing, sub-propeller is arranged in the groove of seal casinghousing front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201169050U CN201100269Y (en) | 2007-09-01 | 2007-09-01 | A compound mechanical sealing device for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201169050U CN201100269Y (en) | 2007-09-01 | 2007-09-01 | A compound mechanical sealing device for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201100269Y true CN201100269Y (en) | 2008-08-13 |
Family
ID=39936804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201169050U Expired - Fee Related CN201100269Y (en) | 2007-09-01 | 2007-09-01 | A compound mechanical sealing device for pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201100269Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871469A (en) * | 2010-07-12 | 2010-10-27 | 大连四方佳特流体设备有限公司 | Medicinal pump |
| CN103321946A (en) * | 2013-07-15 | 2013-09-25 | 温州市康而达实业有限公司 | Automatic adjusting non-water sealing device |
| CN103470527A (en) * | 2013-08-23 | 2013-12-25 | 芜湖市中天密封件有限公司 | Auto-boost mechanical seal for slurry pumps |
| CN103994080A (en) * | 2014-06-13 | 2014-08-20 | 沈小明 | Super wear-resisting mechanical seal centrifugal pump |
| CN110454403A (en) * | 2019-07-17 | 2019-11-15 | 善若泵业科技有限公司 | A kind of Integral water pump connector |
-
2007
- 2007-09-01 CN CNU2007201169050U patent/CN201100269Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871469A (en) * | 2010-07-12 | 2010-10-27 | 大连四方佳特流体设备有限公司 | Medicinal pump |
| CN103321946A (en) * | 2013-07-15 | 2013-09-25 | 温州市康而达实业有限公司 | Automatic adjusting non-water sealing device |
| CN103321946B (en) * | 2013-07-15 | 2016-06-15 | 温州市康而达实业有限公司 | It is automatically adjusted no-water sealing device |
| CN103470527A (en) * | 2013-08-23 | 2013-12-25 | 芜湖市中天密封件有限公司 | Auto-boost mechanical seal for slurry pumps |
| CN103994080A (en) * | 2014-06-13 | 2014-08-20 | 沈小明 | Super wear-resisting mechanical seal centrifugal pump |
| CN110454403A (en) * | 2019-07-17 | 2019-11-15 | 善若泵业科技有限公司 | A kind of Integral water pump connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080813 Termination date: 20110901 |