GB1361987A - Centrifugal pump - Google Patents
Centrifugal pumpInfo
- Publication number
- GB1361987A GB1361987A GB3650871A GB3650871A GB1361987A GB 1361987 A GB1361987 A GB 1361987A GB 3650871 A GB3650871 A GB 3650871A GB 3650871 A GB3650871 A GB 3650871A GB 1361987 A GB1361987 A GB 1361987A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sealing
- ring
- space
- low
- impeller
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
- F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
- F16J15/3412—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities
- F16J15/342—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities with means for feeding fluid directly to the face
-
- 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
- F04D29/16—Sealings between pressure and suction sides
- F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
- F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/622—Adjusting the clearances between rotary and stationary parts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
1361987 Rotary shaft seals BALLAST-NEDAM GROEP NV 3 Aug 1971 [4 Aug 1970] 36508/71 Heading F2B In a centrifugal pump sealing means between the pump casing 1 and the impeller 2 comprises a sealing ring 12, having a first sealing face 32, Fig. 3, adjacent the high-pressure side 56 of the seal and a second sealing face 34 adjacent the low-pressure side 57 of the seal separated by a space 33 communicating by a passage 59 with the low-pressure side 57, the faces 32, 34 being urged into sealing contact with a co-operating face 53 of the impeller by the forces due to the high pressure acting on a first back surface 54 on the ring and the low pressure acting on a second back surface 55. The ring 12 is slidably sealed by an 0-ring 52 on a collar 13 of a flange 11 bolted to the casing rear cover 4 and grease is supplied to the sealing faces through inlet 35 and passages 30. Purgating water which prevents the suspension of sand and water being pumped from reaching the sealing means through the gap 58, Fig. 1, between the impeller and casing, is supplied to the highpressure side 56 through inlet 14. The sealing ring 10, Fig. 2b, at the inlet side of the pump is slidably sealed by 0-rings on a collar 9 of a flange 7 bolted to the front cover 5 and has sealing faces 17, 19 co-operating with a face on the impeller 2 and separated by a space 18 communicating with the low-pressure side, a first back surface 27 subjected to high pressure, a second back surface 29 subjected to low pressure and a third back surface 28 subjected to a control pressure in a space 24 communicating through a throttle 25 and passage 26 with a control pressure source 79, e.g. atmosphere. The space 24 also communicates via passage 23 with the sealing face 19. The modification shown in Figs. 4 and 5 for a radial seal comprises a sealing ring 78 formed by segments 77 interconnected by elastomeric material and having faces 43, 44 engaging a ring 76 attached to the impeller 2 and separated by a space 42 connected by passages 41 to the low-pressure side of the seal. The control space 24 communicates via throttle 25 and passage 26 with a control pressure source.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7011545.A NL157081B (en) | 1970-08-04 | 1970-08-04 | SEAL FOR SEALING A GAP BETWEEN A STATIONARY AND A ROTATABLE PART. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1361987A true GB1361987A (en) | 1974-07-30 |
Family
ID=19810716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3650871A Expired GB1361987A (en) | 1970-08-04 | 1971-07-03 | Centrifugal pump |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3754834A (en) |
| JP (1) | JPS5427561B1 (en) |
| BE (1) | BE770836A (en) |
| FR (1) | FR2101970A5 (en) |
| GB (1) | GB1361987A (en) |
| NL (2) | NL157081B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4101241A (en) * | 1976-05-19 | 1978-07-18 | Kabushiki Kaisha Komatsu Seisakusho | Super charger with fluid biased heat shroud |
| US4334830A (en) * | 1980-03-24 | 1982-06-15 | The Nash Engineering Company | Two-stage liquid ring pump with improved intrastage and interstage sealing means |
| US4802818A (en) * | 1987-09-28 | 1989-02-07 | Daniel Wiggins | Slurry pump suction side liner with replaceable components |
| US5284347A (en) * | 1991-03-25 | 1994-02-08 | General Electric Company | Gas bearing sealing means |
| US5179881A (en) * | 1991-04-23 | 1993-01-19 | Mccain Foods Limited | System for producing helical vegetable strips and turbine therefor |
| US5971704A (en) * | 1997-04-23 | 1999-10-26 | Toyo Pumps North America Corporation | Device for adjusting the running clearance of an impeller |
| US6599086B2 (en) * | 2001-07-03 | 2003-07-29 | Marc S. C. Soja | Adjustable pump wear plate positioning assembly |
| CA2432831A1 (en) * | 2003-06-20 | 2004-12-20 | Peter G. Mokry | An impeller and a supercharger for an internal combustion engine |
| US20110177322A1 (en) | 2010-01-16 | 2011-07-21 | Douglas Charles Ogrin | Ceramic articles and methods |
| DE102011054320A1 (en) * | 2011-10-07 | 2013-04-11 | Uwe Würdig | Centrifugal pump and arrangement for gap sealing |
| AU2017234645C1 (en) * | 2016-03-18 | 2021-03-18 | Weir Slurry Group, Inc. | Sealing arrangement for adjustable elements of a pump |
| CN106989051B (en) * | 2017-05-19 | 2023-05-12 | 合肥工业大学 | Sealing mouth ring for centrifugal pump |
-
1970
- 1970-08-04 NL NL7011545.A patent/NL157081B/en not_active IP Right Cessation
-
1971
- 1971-07-03 GB GB3650871A patent/GB1361987A/en not_active Expired
- 1971-07-30 FR FR7128028A patent/FR2101970A5/fr not_active Expired
- 1971-07-30 US US00167674A patent/US3754834A/en not_active Expired - Lifetime
- 1971-07-31 JP JP5789171A patent/JPS5427561B1/ja active Pending
- 1971-08-02 BE BE770836A patent/BE770836A/en unknown
-
1978
- 1978-04-24 NL NL7804357.A patent/NL159759B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NL157081B (en) | 1978-06-15 |
| DE2138836A1 (en) | 1972-07-13 |
| NL159759B (en) | 1979-03-15 |
| FR2101970A5 (en) | 1972-03-31 |
| US3754834A (en) | 1973-08-28 |
| DE2138836B2 (en) | 1975-08-07 |
| JPS5427561B1 (en) | 1979-09-11 |
| NL7011545A (en) | 1972-02-08 |
| NL7804357A (en) | 1978-09-29 |
| BE770836A (en) | 1972-02-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |