CN104265677A - Packing sealing mechanism for centrifugal pump - Google Patents
Packing sealing mechanism for centrifugal pump Download PDFInfo
- Publication number
- CN104265677A CN104265677A CN201410450462.3A CN201410450462A CN104265677A CN 104265677 A CN104265677 A CN 104265677A CN 201410450462 A CN201410450462 A CN 201410450462A CN 104265677 A CN104265677 A CN 104265677A
- Authority
- CN
- China
- Prior art keywords
- pump
- shaft
- section
- pump case
- packing
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a packing sealing mechanism for a centrifugal pump. The packing sealing mechanism for the centrifugal pump comprises a pump case and a pump shaft, wherein a round hole is formed in the pump case, the diameter of the round hole is larger than that of the pump shaft, the pump shaft stretches out of the pump case through the round hole, the axis of the pump shaft coincides with the axis of the pump case, the section, located outside of the pump case, of the pump shaft is sleeved with a packing gland, a shaft sleeve is arranged on the section, located in the round hole of the pump case, of the pump shaft, the outer diameter of the shaft sleeve is smaller than the diameter of the round hole, a nut is arranged on the section, corresponding to the outer end of the shaft sleeve, of the pump shaft, the section, close to an inner cavity of the pump case, of the pump shaft is sleeved with a packing sleeve, a circumferential boss which faces the gap between the shaft sleeve of the pump shaft and the pump case is arranged on the packing gland, and the section, located between the circumferential boss and the packing sleeve, of the shaft sleeve is sequentially sleeved with four oil-immersed asbestos packing rings, a water sealing ring and four oil-immersed asbestos packing rings. The packing sealing mechanism for the centrifugal pump is characterized in that a supporting piece is arranged between every two adjacent oil-immersed asbestos packing rings. The packing sealing mechanism for the centrifugal pump is good in sealing effect.
Description
Technical field
The present invention relates to the close mechanism of a kind of filler, is the centrifugal pump packing seal mechanism being used in Leakage prevention between centrifugal pump and pump shaft specifically.
Background technique
All know in the manufacturing of centrifugal pump, the pump shaft of centrifugal pump and the joint of pump case all can be provided with packing seal mechanism.
At present, traditional centrifugal pump packing seal mechanism comprises pump case and pump shaft.Described pump case has diameter be greater than the circular hole of pump shaft diameter, described pump shaft is reached outside pump case by this circular hole, and their axis overlaps mutually.On that section of pump shaft outside pump case, cover has Gland, and that section of pump shaft being positioned at pump case circular hole has axle sleeve, and the external diameter of axle sleeve is less than the diameter of circular hole.That section pump shaft corresponding to axle sleeve outer end there is nut, on that section of axle sleeve of pump case inner chamber, cover has filler cover, described Gland has towards the circumferential boss in the gap between pump shaft axle sleeve and pump case, the section axle sleeve of this circumferential boss and filler inner room overlaps successively and has 4 oil immersion asbestos packing rings, seal cage and 4 oil immersion asbestos packing rings.In this packing seal mechanism adjacent two oil immersion asbestos packing ring be directly contact, when Gland compresses, the interface of two adjacent oil immersion asbestos packing rings can be invaded mutually because extruding mutually, filler is made to form an entirety, thus reducing the elasticity of filler, sealing effect is poor.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of centrifugal pump packing seal mechanism, and the sealing effect of sealing mechanism is better.
For solving the problem, take following technological scheme:
Centrifugal pump packing seal mechanism of the present invention comprises pump case and pump shaft.Described pump case has diameter be greater than the circular hole of pump shaft diameter, described pump shaft is reached outside pump case by this circular hole, and their axis overlaps mutually.On that section of pump shaft outside pump case, cover has Gland, and that section of pump shaft being positioned at pump case circular hole has axle sleeve, and the external diameter of axle sleeve is less than the diameter of circular hole.That section pump shaft corresponding to axle sleeve outer end there is nut, on that section of axle sleeve of pump case inner chamber, cover has filler cover, described Gland has towards the circumferential boss in the gap between pump shaft axle sleeve and pump case, the section axle sleeve of this circumferential boss and filler inner room overlaps successively and has 4 oil immersion asbestos packing rings, seal cage and 4 oil immersion asbestos packing rings.The two oil immersion asbestos packing interannulars being characterized in adjacent all have support plate.
Wherein, described support plate is copper sheet.
Take above scheme, have the following advantages
Because two oil immersion asbestos packing interannulars adjacent in centrifugal pump packing seal mechanism of the present invention all have support plate.So when Gland compresses, oil immersion asbestos packing ring is all pressed on support plate, and leaching asbestos packing interannular can not invade into mutually as a whole because of direct contact squeeze and reduce elasticity, and sealing effect is better.
Accompanying drawing explanation
Fig. 1 is the structural representation of centrifugal pump packing seal mechanism of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, centrifugal pump packing seal mechanism of the present invention comprises pump case 1 and pump shaft 2.Described pump case 1 has diameter to be greater than the circular hole of pump shaft 2 diameter, and described pump shaft 2 is reached outside pump case 1 by this circular hole, and their axis overlaps mutually.On that section of pump shaft 2 outside pump case 1, cover has Gland 3, and that section of pump shaft 2 being positioned at pump case 1 circular hole has axle sleeve 4, and the external diameter of axle sleeve 4 is less than the diameter of circular hole.That section pump shaft 2 corresponding to axle sleeve 4 outer end there is nut 5, on that section of axle sleeve 4 of pump case 1 inner chamber, cover has filler to overlap 6, described Gland 3 has towards the circumferential boss 7 in the gap between pump shaft 2 axle sleeve 4 and pump case 1, this circumferential boss 7 and filler overlap the section axle sleeve 4 between 6 overlaps successively 4 oil immersion asbestos packing rings 8, seal cage 9 and 4 oil immersion asbestos packing rings 8.All have support plate 10 between two adjacent oil immersion asbestos packing rings 8, described support plate 10 is made up of copper sheet.
During use, compression Gland 3 just completes the sealing to centrifugal pump.
Claims (2)
1. a centrifugal pump packing seal mechanism, comprises pump case (1) and pump shaft (2); Described pump case (1) has diameter be greater than the circular hole of pump shaft (2) diameter, described pump shaft (2) reaches pump case (1) outward by this circular hole, and their axis overlaps mutually; Have Gland (3) at the upper cover of outer that section of pump shaft (2) of pump case (1), that section of pump shaft (2) being positioned at pump case (1) circular hole has axle sleeve (4), and the external diameter of axle sleeve (4) is less than the diameter of circular hole; Nut (5) is had with on corresponding that section of pump shaft (2) in axle sleeve (4) outer end, the upper cover of that section of axle sleeve (4) near pump case (1) inner chamber has filler cover (6), described Gland (3) has towards the circumferential boss (7) in the gap between pump shaft (2) axle sleeve (4) and pump case (1), the section axle sleeve (4) between this circumferential boss (7) and filler cover (6) overlaps successively and has 4 oil immersion asbestos packing rings (8), seal cage (9) and 4 oil immersion asbestos packing rings (8); It is characterized in that all there is support plate (10) between two adjacent oil immersion asbestos packing rings (8).
2. centrifugal pump packing seal mechanism as claimed in claim 1, is characterized in that described support plate (10) is copper sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410450462.3A CN104265677A (en) | 2014-09-05 | 2014-09-05 | Packing sealing mechanism for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410450462.3A CN104265677A (en) | 2014-09-05 | 2014-09-05 | Packing sealing mechanism for centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104265677A true CN104265677A (en) | 2015-01-07 |
Family
ID=52157233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410450462.3A Pending CN104265677A (en) | 2014-09-05 | 2014-09-05 | Packing sealing mechanism for centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104265677A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2205880Y (en) * | 1994-02-15 | 1995-08-23 | 国营靖江化工机泵阀门总厂 | Evaporative recirculation pump |
| EP1893898B1 (en) * | 2005-06-21 | 2010-06-02 | Erwin Kopp | Radial sealing device |
| CN201753700U (en) * | 2010-08-13 | 2011-03-02 | 胡玉兵 | Centrifugal pump sealing device |
| CN201755495U (en) * | 2010-07-08 | 2011-03-09 | 萍乡市新安工业有限责任公司 | Random packing |
| CN202914369U (en) * | 2012-03-26 | 2013-05-01 | 马鞍山市佳腾节能科技有限公司 | Improved sealing structure of centrifugal pumps |
| CN103089695A (en) * | 2012-12-09 | 2013-05-08 | 重庆盾铭电磁阀有限公司 | Sealing structure for asbestos packing of water pump bearing |
-
2014
- 2014-09-05 CN CN201410450462.3A patent/CN104265677A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2205880Y (en) * | 1994-02-15 | 1995-08-23 | 国营靖江化工机泵阀门总厂 | Evaporative recirculation pump |
| EP1893898B1 (en) * | 2005-06-21 | 2010-06-02 | Erwin Kopp | Radial sealing device |
| CN201755495U (en) * | 2010-07-08 | 2011-03-09 | 萍乡市新安工业有限责任公司 | Random packing |
| CN201753700U (en) * | 2010-08-13 | 2011-03-02 | 胡玉兵 | Centrifugal pump sealing device |
| CN202914369U (en) * | 2012-03-26 | 2013-05-01 | 马鞍山市佳腾节能科技有限公司 | Improved sealing structure of centrifugal pumps |
| CN103089695A (en) * | 2012-12-09 | 2013-05-08 | 重庆盾铭电磁阀有限公司 | Sealing structure for asbestos packing of water pump bearing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204164550U (en) | A kind of pipeline extension device of triple seal structure | |
| MX2016009835A (en) | Non-contacting labyrinth seal assembly. | |
| EP2522806A3 (en) | Pressure energized interference fit seal | |
| EP4234988A3 (en) | Method for manufacturing sealing device, and sealing device | |
| CN105156681B (en) | Mechanical seal | |
| CN204372170U (en) | A kind of rubber seal improving radial structure | |
| CN104265677A (en) | Packing sealing mechanism for centrifugal pump | |
| CN203627293U (en) | Sealing structure of pump shaft | |
| CN203770194U (en) | Assembled high-pressure vertical centrifugal pump mechanical seal device with shaft sleeve spring base | |
| US20190086019A1 (en) | Joint that Prevents a Water Pipe from Twisting | |
| CN206972918U (en) | A kind of rotating ring common type mechanically-sealing apparatus | |
| CN204961326U (en) | Lead -out wire structure of oily formula immersible pump | |
| CN205298554U (en) | Mechanical seal structure suitable for lysine drying chamber | |
| AU2015101364A4 (en) | A Sealing and dust-proof structure for electric push rod | |
| CN204135978U (en) | Plunger displacement pump packing compresses skeleton | |
| CN203879811U (en) | Balance drum structure for automatic difference pressure compensation through mechanical seal | |
| CN204041953U (en) | High leak tightness speed reducer | |
| CN203114716U (en) | Piston rod sealing device of multiple-stage centrifugal pump | |
| CN208503004U (en) | A kind of ceramic plunger | |
| CN203570661U (en) | Stainless steel punching pump zero leakage sealing structure | |
| CN104653634A (en) | Sealing gland structure | |
| CN205715994U (en) | A kind of blowdown apparatus of valve | |
| CN103032150B (en) | Water seal bushing | |
| CN204692583U (en) | A kind of seal ring of mechanical seal | |
| CN104018908A (en) | Oil leakage preventing type engine oil filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150107 |