CN2168972Y - Mechanic sealing of multi-stage centrifugal pump for petrochemistry - Google Patents
Mechanic sealing of multi-stage centrifugal pump for petrochemistry Download PDFInfo
- Publication number
- CN2168972Y CN2168972Y CN 93227236 CN93227236U CN2168972Y CN 2168972 Y CN2168972 Y CN 2168972Y CN 93227236 CN93227236 CN 93227236 CN 93227236 U CN93227236 U CN 93227236U CN 2168972 Y CN2168972 Y CN 2168972Y
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- CN
- China
- Prior art keywords
- ring
- gland
- floating
- rotating
- rotating ring
- 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 - Fee Related
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Abstract
The utility model discloses the mechanical sealing of multi-stage centrifugal pump for a centrifugal pump. The utility model is composed of the sealing ring (1) of a press cover, a press cover (2), a press plate (3), a protective jacket (4), the sealing ring (5) of a floating ring, a floating ring (6), a spring (7), a rotary ring (8), the sealing ring (9) of the rotary ring, a shifting pin (10), a driving ring (11), a fastening pad (12), and the holding screw (13) of a cylinder end. After the mechanical sealing is assembled, the reliability of operation of the equipment is improved, and a great amount of the maintenance cost and the loss generated by the maintenance are reduced. The utility model can also be assembled on other pumps.
Description
The utility model is belong to mechanical seal a kind of.
At present, the major part that the multistage centrifugal pump sealing gland seal is used is soft packing seal, and there is following shortcoming in soft packing seal: (1) sealing effect is not good; (2) quick abrasion; (3) to regularly replace; (4) wasted lot of manpower and material resources.In case seal failure makes fed sheet of a media excessive, causes the harm to people, animal, fed sheet of a media causes waste, also tests with the conventional machinery sealing, and it is not good to obtain effect yet, still has wasting manpower and material resources's shortcoming.
The purpose of this utility model: be at above-mentioned present situation, a kind of multistage centrifugal pump mechanical sealing that can be applicable to multistage pump is provided.
The purpose of this utility model is achieved in that this multistage centrifugal pump mechanical sealing is made up of gland ring (1), gland (2), pressing plate (3), protecting jacket (4), float ring seal circle (5), floating ring (6), spring (7), rotating ring (8), rotating ring seal ring (9), finger (10), transmission ring (11), fastening pad (12) and cylinder end clamping fixed screw (13); stud with annular hard metal tip (14) in the floating ring (6), stud with annular hard metal tip (15) in the rotating ring (8) or make with graphite entirely.
During use; after being contained in gland ring (1) in the groove of gland (2); be contained in the suction casing of pump together; the end cap stuffing hole that extrudes section is interior also by planar end surface; protecting jacket (4) is contained in gland (2) end face groove; with screw with pressing plate (3); protecting jacket (4); gland (2) is fastened on the end cap; spring (7) is contained in gland (2) end-face hole; float ring seal circle (5) is contained in the peripheral groove of the floating ring (6) of having inlayed hard metal tip (14); pack into together again in gland (2) hole with spring (7) by last; the bulb of protecting jacket (4) is contained in floating ring (6) peripheral groove; again with rotating ring (8); rotating ring seal ring (9) is contained in pump shaft together and puts; finger (10) is contained on the transmission ring (11); refill on axle sleeve; finger (10) is inserted in rotating ring (8) end-face hole; floating ring (6) empiecement end face is contacted with rotating ring (8) empiecement end face; between the big I of pressure require to calculate the sealing impacting force according to pump; promote transmission ring (11); rotating ring (8); after the pressure that floating ring (6) makes spring (7) be compressed the generation reaction force reaches designing requirement; with fastening pad (12); cylinder end clamping fixed screw (13) is contained in transmission ring (11), and with cylinder end clamping fixed screw (13) transmission ring (11) is fastened on the axle sleeve.In fed sheet of a media flows to stuffing hole, because gland ring (1) sealing is arranged between stuffing hole and the gland (2), floating seal ring (5) sealing is arranged between gland (2) and the floating ring (6), fed sheet of a media can only be from flowing between floating ring (6) endoporus and the axle sleeve between floating ring (6) and the rotating ring (8), be touched the seal face sealing, can not be excessive, and rotating ring seal ring (9) sealing is arranged between rotating ring (8) and the axle sleeve, predetermined sealing load is to be got off to finish by spring (7) the generation reaction force of compression and the acting in conjunction of sealed medium pressure between floating ring (6) seal face and rotating ring (8) seal face.After reaching predetermined sealing load, floating ring (6) and rotating ring (8) abrasive end face that matches tightly contacts, when rotating and be static, axle (axle sleeve) can prevent all that sealed medium from leaking, and reaches the effect of multistage centrifugal pump sealing gland seal like this from the friction sealed end face of floating ring (6) and rotating ring (8).
The utility model compared with prior art has following advantage:
1. the multistage centrifugal pump mechanical sealing made from structure of the present utility model, floating ring (6) is thicker with rotating ring (8) thickness, catching a cold or be difficult for producing mechanically deformation when hot, be difficult for causing seal failure, improve the reliability of this equipment operation, the loss that has reduced a large amount of maintenance expensess and the time caused production because of maintenance.
2. the multistage centrifugal pump mechanical sealing made from structure of the present utility model also can be used on other pumps.
Description of drawings:
Fig. 1 is a multistage centrifugal pump mechanical sealing schematic representation.
(1) gland ring, (2) gland, (3) pressing plate, (4) protecting jacket, (5) float ring seal circle, (6) floating ring, (7) spring, (8) rotating ring, (9) rotating ring seal ring, (10) finger, (11) transmission ring, (12) fastening pad, (13) cylinder end clamping fixed screw, (14) annular hard metal tip, (15) annular hard metal tip or graphite annulus.
Embodiment:
Be installed in according to the petrochemical industry multistage centrifugal pump mechanical sealing of structure manufacturing of the present utility model on the multistage segmented centrifugal pump of 200D43 * 8 types of Qian'an Chemical Fertilizer Factory, Hebei Prov. and test, totally 6 pumps.The sealing structure as shown in Figure 1; (1) gland ring; (2) gland; (3) pressing plate; (4) protecting jacket; (5) float ring seal circle; (6) floating ring; (7) spring; (8) rotating ring; (9) rotating ring seal ring; (10) finger; (11) transmission ring; (12) fastening pad and (13) cylinder end clamping fixed screw are formed; gland (2) is contained in the pump stuffing box hole; and floating ring (6) is to be contained in the gland (2); matching gap is little; reaching floating ring (6) can not do excessive swing and can only move; adopt a plurality of springs (7) to promote floating ring (6); it is big that thrust reaches even friction; floating ring (6) does not rotate when work; gland ring (1) is housed between gland (2) and pump stuffing box hole has prevented that fed sheet of a media from leaking between two; float ring seal circle (5) also is housed between gland (2) and floating ring (6) prevents that fed sheet of a media from leaking between two; rotating ring (8) is by the interior driven rotary of end-face hole that finger (10) inserts rotating ring (8) is housed on the transmission ring (11); and transmission ring (11) is by cylinder end clamping fixed screw (13); fastening pad (12) is fixed on the axle sleeve of pump; rotating ring (8); transmission ring (11) is equipped with rotating ring seal ring (9) with shaft room; prevent that fed sheet of a media from leaking from rotating ring (8) and shaft room; under the effect by spring (7) and sealed medium pressure; floating ring (6) is tightly contacted with the end face of rotating ring (8); prevent that sealed medium from leaking, and so just reached the effect of rotation axis seal between the sealed friction surface of rotating ring (8) and floating ring (6).Because the thickness of floating ring (6), rotating ring (8) is thicker; be general part 1.5-2 times; when catching a cold or be heated, be difficult for producing mechanically deformation; be difficult for causing the inefficacy that seals; use protecting jacket (4) protection spring (7) again; fed sheet of a media or sealing medium can not be entered in the hole of shock mount (7), form crystalline film after medium is caught a cold and to make spring (7) ineffective.Conveying contains the medium of sulphur, and wearing and tearing are unloaded Lou, do not had to the half a year-one's year nothing that successively turns round, and do not find other problems.
Claims (1)
1, a kind of be used on the centrifugal pump petrochemical industry multistage centrifugal pump mechanical sealing, it is made up of gland ring (1), gland (2), pressing plate (3), protecting jacket (4), float ring seal circle (5), floating ring (6), spring (7), rotating ring (8), rotating ring seal ring (9), finger (10), transmission ring (11), fastening pad (12) and cylinder end clamping fixed screw (13); stud with annular hard metal tip (14) in the floating ring (6); stud with annular hard metal tip or graphite annulus (15) in the rotating ring (8), it is characterized in that being
A floating ring (6) is to be contained in the static gland (2), matching gap is less, floating ring (6) can not be done excessive swing and can only move in gland (2), adopt a plurality of springs (7) to promote floating ring (6) again, make the thrust uniform frictional force big, prevent that floating ring (6) from rotating when work, prevent to leak between fed sheet of a media is from two in that gland ring (1) is housed between gland (2) and pump stuffing box hole, between gland (2) and floating ring (6) float ring seal circle (3) is housed and prevents that fed sheet of a media from leaking from the centre;
B rotating ring (8) is by the interior driven rotary of end-face hole that finger (10) inserts rotating ring (8) is housed on the transmission ring (11), transmission ring (11) is fixed on the axle sleeve of pump with cylinder end clamping fixed screw (13), fastening pad (12), with shaft room rotating ring seal ring (9) is housed at rotating ring (8), transmission ring (6), prevents that medium from leaking from rotating ring (8) and shaft room;
C floating ring (6), rotating ring (8) thickness are thicker be general part thickness 1.5-2 doubly, when catching a cold or be heated, be difficult for producing mechanically deformation, be difficult for causing seal failure;
D adopts protecting jacket (4) protection spring (7); prevent that medium from entering in the hole of shock mount (7); protecting jacket (4) is to be contained in gland (2) end face groove; with screw pressing plate (3), protecting jacket (4) and gland (2) are fastened on the pump end face; the bulb of protecting jacket (4) is contained in floating ring (6) peripheral groove; under sealed medium pressure, medium is can not enter in the hole of shock mount (7), as the medium rear surface of catching a cold form crystalline film and can not make spring (7) ineffective.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93227236 CN2168972Y (en) | 1993-02-06 | 1993-02-06 | Mechanic sealing of multi-stage centrifugal pump for petrochemistry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93227236 CN2168972Y (en) | 1993-02-06 | 1993-02-06 | Mechanic sealing of multi-stage centrifugal pump for petrochemistry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2168972Y true CN2168972Y (en) | 1994-06-15 |
Family
ID=33804551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93227236 Expired - Fee Related CN2168972Y (en) | 1993-02-06 | 1993-02-06 | Mechanic sealing of multi-stage centrifugal pump for petrochemistry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2168972Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318762C (en) * | 2006-03-31 | 2007-05-30 | 浙江水泵总厂有限公司 | High temperature high pressure hot-water circulating pump |
| CN1318763C (en) * | 2006-04-14 | 2007-05-30 | 浙江水泵总厂有限公司 | Sealing packing ring combination for high temperature high pressure hot-water circulating pump |
| CN101832270A (en) * | 2009-03-10 | 2010-09-15 | 格伦德福斯管理联合股份公司 | Multi-stage centrifugal pump |
| CN102829184A (en) * | 2012-08-23 | 2012-12-19 | 丹东克隆集团有限责任公司 | Mechanical sealing drive device with shaft seal |
| CN105526362A (en) * | 2015-11-09 | 2016-04-27 | 宁波市鄞州飞矢机械密封件厂 | Mechanism used for mechanical sealing |
| CN105526355A (en) * | 2015-11-09 | 2016-04-27 | 宁波市鄞州飞矢机械密封件厂 | Device used for mechanical sealing |
| CN105782414A (en) * | 2016-04-10 | 2016-07-20 | 苏州恒扬精密机械有限公司 | Comprehensive self-cooled shaft seal system |
| CN110043671A (en) * | 2019-04-02 | 2019-07-23 | 浙江长城搅拌设备股份有限公司 | Mechanical sealing |
-
1993
- 1993-02-06 CN CN 93227236 patent/CN2168972Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318762C (en) * | 2006-03-31 | 2007-05-30 | 浙江水泵总厂有限公司 | High temperature high pressure hot-water circulating pump |
| CN1318763C (en) * | 2006-04-14 | 2007-05-30 | 浙江水泵总厂有限公司 | Sealing packing ring combination for high temperature high pressure hot-water circulating pump |
| CN101832270A (en) * | 2009-03-10 | 2010-09-15 | 格伦德福斯管理联合股份公司 | Multi-stage centrifugal pump |
| CN101832270B (en) * | 2009-03-10 | 2013-06-19 | 格伦德福斯管理联合股份公司 | Multi-stage centrifugal pump |
| CN102829184A (en) * | 2012-08-23 | 2012-12-19 | 丹东克隆集团有限责任公司 | Mechanical sealing drive device with shaft seal |
| CN105526362A (en) * | 2015-11-09 | 2016-04-27 | 宁波市鄞州飞矢机械密封件厂 | Mechanism used for mechanical sealing |
| CN105526355A (en) * | 2015-11-09 | 2016-04-27 | 宁波市鄞州飞矢机械密封件厂 | Device used for mechanical sealing |
| CN105782414A (en) * | 2016-04-10 | 2016-07-20 | 苏州恒扬精密机械有限公司 | Comprehensive self-cooled shaft seal system |
| CN105782414B (en) * | 2016-04-10 | 2018-05-08 | 苏州恒扬精密机械有限公司 | A kind of comprehensive self-cooled gland seal system |
| CN110043671A (en) * | 2019-04-02 | 2019-07-23 | 浙江长城搅拌设备股份有限公司 | Mechanical sealing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |