GB2302137A - Cover plate for fluid pumps - Google Patents
Cover plate for fluid pumps Download PDFInfo
- Publication number
- GB2302137A GB2302137A GB9612253A GB9612253A GB2302137A GB 2302137 A GB2302137 A GB 2302137A GB 9612253 A GB9612253 A GB 9612253A GB 9612253 A GB9612253 A GB 9612253A GB 2302137 A GB2302137 A GB 2302137A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cover
- pump
- cover plate
- bolts
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
- F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- 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
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/70—Disassembly methods
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A cover plate for fluid pumps incorporates an O-ring seal 5 set and secured in a channel 4. The cover may include slots 7 extending some securing holes to allow easy positioning of the cover on to bolts which remain located in the body of the pump. These and the other securing bolts 8 may have large and knurled heads for rapid finger-tightening and avoiding the need for tools.
Description
COVER FOR FLUID PUMPS
This invention relates to a cover for fluid pumps.
Many pumps consist of a housing with inlet and outlet pipes and a rotating rubber composition impeller as the component driving the fluid. This composition impeller can deteriorate for a variety of reasons causing the pump to fail. Replacement is a lengthy process because the covers used on these pumps are secured by a number of bolts tightened with spanners or screwdrivers, and require gaskets and sealing compound to provide a secure seal.
This lengthy process has disadvantages in many different pump applications:
1. Lengthy impeller changes and the time taken
for checks and maintenance work can cause
expensive down time in commercial operations
as diverse as:
sump emptying bilge pumping
sewage tank emptying hose washing
mains boosting dockside pumping
water sampling fire-fighting
wash down systems emergency engine cooling
shallow well pumping boat water systems
The inconvenience of lengthy change procedures in many of these
and other operations with high manpower involvement also has a
high commercial value.
The application of pumps extends well beyond these
examples and includes fluids of all types and also gases.
2. Motor vessels and sailing craft with diesel engines
incorporate in the engine a water pump to circulate water
around the engine for cooling purposes. Controlling
the temperature of the engine is vital to its proper
functioning and failure leads to failure of the engine.
The time taken to replace an impeller may be critical
for a boat left without power. In some circumstances
this can lead to serious danger for the vessel concerned.
The safety element in this application has a particularly
high value.
According to the present invention, there is provided a fluid pump cover plate assembly comprising a rigid plate having, on one surface, a seal set in a channel for providing a sealing connection between the plate and the pump body, and a cover securing means for enabling the plate to be quickly and sealingly secured on the pump body.
A specific embodiment of the invention of a rapid deployment cover for pumps is now described by way of example with reference to the accompanying drawings in which
Fig 1 shows the body of the pump with the existing
cover and gasket removed.
Fig 2 shows an enlargement of a cross-section of the
replacement cover with composition 'o' ring seal
in position.
Fig 3 shows the replacement cap in position and secured
by four thumb bolts tightened only by hand.
Referring to the drawings Fig 1 is a plan view of a pump with the cover removed revealing the body of the pump casing with a central cavity 1. in which the impeller rotates. Around this is the flange onto which the existing cover is sealed by a gasket and sealing compound and secured by six bolts passed through the cover and into the bolt holes 3.
Fig 2 is an enlarged cross-section of the rapid deployment cover. This comprises a rigid plate of brass, bronze or other metals treated for compatibility with the body of the pump in a particular fluid environment. Suitable stable plastics may also be used.
Into this cover plate is cut a circular channel 4 to accommodate the rubber or plastic 'o' ring seal 5. The dimensions of these are such that the seal is held in position by the channel and does not drop out when the cover is removed for impeller inspection or replacement.
The seal composition must be of the correct hardness to allow a satisfactory seal when the cover is tightened by hand as later indicated. It must also be compatible with the liquids and environment involved.
When the cover is placed in position the seal sits immediately inside the circle of securing bolts 3 on the pump casing.
The replacement cover is secured by bolts. The shafts of two of these bolts are retained in the cover by being passed through threaded and stepped holes 6. This ensures that these remain attached to the cover when loosened. The other bolts remain screwed into the body of the pump and when loosened allow the cover to slide sideways without the bolts becoming detached from the body of the pump.
Shaped slots 7 in the side of the cover allow it to slide under the bolt heads until it engages on the shaft of the bolts. When the other bolts have been located and engaged the cover is then in the correct position for tightening.
In the example, four bolts are shown securing the cover. This number might be changed according to the needs of the pump concerned with corresponding changes in the number of slots and bolts used. The provision for bolt retention might also vary.
Round thumb bolt heads 8 are shown holding the cover in position. These bolt heads are cylindrical in shape and have a knurled or serrated outer surface to assist gripping. The under surface of the bolt heads should be sufficiently large to ensure effective gripping and securing of the bolt heads against the top surface of the cover when hand-tightened. This design of bolt head will allow securing and sealing of the cover rapidly by hand without the use of any tools. A variety of other bolt heads, for example wing-headed, could also be used to allow tightening by hand or with tools or using specially adapted tools.
Alternative methods of closure might also be used. These could include hinges, hinged clips, removable clips, screw thread or snap fitting and might incorporate prior adaptation or addition to the pump casing.
Claims (7)
1. A fluid pump cover plate assembly comprising a
rigid plate having, on one surface, a seal set in
a channel for providing a sealing connection
between the plate and the pump body, and a
cover securing means for enabling the plate to
be quickly and sealingly secured on the pump
body.
2. A pump cover plate as claimed in Claim 1 in which
the channel cut to accommodate the composition
'o' ring secures the 'o' ring in position during removal
or replacement of the cover.
3. A pump cover plate as claimed in Claims 1 and 2 in
which the 'o' ring seal fits inside the existing ring of
securing bolt holes on the pump casing and provides
a seal without the need for the pressure exerted by
tools on multiple fixing bolts normally used with gaskets
and sealant. Instead a seal is provided by the 'o' ring
of the correct composition using a limited number of
finger-tightened bolts with large heads shaped for the
purpose.
4. A cover plate as claimed in Claims 1, 2 and 3 in which
one or more holes for securing bolts have slots extending
to the edge of the cover plate such that the bolts can remain
in the body of the pump allowing the cover to slide under
the heads of these bolts and be rapidly located and
secured.
5. A pump cover plate as claimed in Claims 1, 2, 3 and 4 in
which the said cover securing means is secured without
the use of gaskets, sealing compound or tools.
6. A cover for fluid pumps as claimed in any preceding claim
which is made of metal or plastics or any combination of
these.
7. A cover plate for fluid pumps substantially as herein
described and illustrated in the accompanying drawings.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9612253A GB2302137B (en) | 1995-06-14 | 1996-06-12 | Cover for fluid pumps |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9512049.9A GB9512049D0 (en) | 1995-06-14 | 1995-06-14 | Cover for water pumps |
GBGB9522869.8A GB9522869D0 (en) | 1995-11-08 | 1995-11-08 | Cover for water pumps |
GBGB9523179.1A GB9523179D0 (en) | 1995-11-13 | 1995-11-13 | Cover for fluid pumps |
GB9612253A GB2302137B (en) | 1995-06-14 | 1996-06-12 | Cover for fluid pumps |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9612253D0 GB9612253D0 (en) | 1996-08-14 |
GB2302137A true GB2302137A (en) | 1997-01-08 |
GB2302137B GB2302137B (en) | 1998-09-23 |
Family
ID=27451295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9612253A Expired - Lifetime GB2302137B (en) | 1995-06-14 | 1996-06-12 | Cover for fluid pumps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2302137B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2416002A (en) * | 2004-07-07 | 2006-01-11 | Alpha Fry Ltd | An adaptor for connecting a flushing machine to a pump housing |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105351252B (en) * | 2015-11-25 | 2017-09-29 | 湖南天雁机械有限责任公司 | The attachment structure of Compressor volute of turbocharger and bearing body |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2048385A (en) * | 1979-04-09 | 1980-12-10 | Karl Marx Stadt Ind Werke | A rotary fluid pump or motor |
EP0157049A2 (en) * | 1983-12-20 | 1985-10-09 | Ssp Pumps Limited | Lobe rotor pumps |
GB2187233A (en) * | 1985-08-15 | 1987-09-03 | Hobourn Eaton Ltd | Rotary positive displacement pump |
GB2274489A (en) * | 1993-01-20 | 1994-07-27 | Sauer Sundstrand Ltd | Gear pumps |
-
1996
- 1996-06-12 GB GB9612253A patent/GB2302137B/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2048385A (en) * | 1979-04-09 | 1980-12-10 | Karl Marx Stadt Ind Werke | A rotary fluid pump or motor |
EP0157049A2 (en) * | 1983-12-20 | 1985-10-09 | Ssp Pumps Limited | Lobe rotor pumps |
GB2187233A (en) * | 1985-08-15 | 1987-09-03 | Hobourn Eaton Ltd | Rotary positive displacement pump |
GB2274489A (en) * | 1993-01-20 | 1994-07-27 | Sauer Sundstrand Ltd | Gear pumps |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2416002A (en) * | 2004-07-07 | 2006-01-11 | Alpha Fry Ltd | An adaptor for connecting a flushing machine to a pump housing |
GB2416002B (en) * | 2004-07-07 | 2008-08-27 | Alpha Fry Ltd | Adaptor for flushing a central heating system |
Also Published As
Publication number | Publication date |
---|---|
GB9612253D0 (en) | 1996-08-14 |
GB2302137B (en) | 1998-09-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20120612 |
|
S28 | Restoration of ceased patents (sect. 28/pat. act 1977) |
Free format text: APPLICATION FILED |
|
S28 | Restoration of ceased patents (sect. 28/pat. act 1977) |
Free format text: RESTORATION ALLOWED Effective date: 20130501 |
|
PE20 | Patent expired after termination of 20 years |
Expiry date: 20160611 |