US3720488A - Well pumping apparatus for polluted water - Google Patents

Well pumping apparatus for polluted water Download PDF

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US3720488A
US3720488A US00182806A US3720488DA US3720488A US 3720488 A US3720488 A US 3720488A US 00182806 A US00182806 A US 00182806A US 3720488D A US3720488D A US 3720488DA US 3720488 A US3720488 A US 3720488A
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well
shell
housing
pump housing
pumping apparatus
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US00182806A
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L Bood
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MOWID ANSTALT
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MOWID ANSTALT
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    • 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
    • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
    • F04D29/606—Mounting in cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous

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  • ABSTRACT A well pumping apparatus for polluted water is disclosed wherein a housing portion is fixedly arranged within the wall.
  • a removable portion comprising an electric motor, a motor housing and an impeller, is arranged to sealingly engage the fixed housing portion with the well to define a pumping chamber.
  • the invention relates to a well pumping apparatus for polluted water, comprising a well with one or more supply openings for the polluted water and a discharge line for the water to be pumped and a pump device, consisting of a portion fixedly arranged within the well and comprising a pump housing provided with a suction opening at the lower side, which is in connection with the polluted water collected in the well and provided with the discharge line, and of a portion which is removable from the well and which comprises an electric motor, a motor housing surrounding this motor and an impeller, torque-flow impeller (in German Wirbelrad) or propeller extending beyond this housing.
  • a well pumping apparatus for polluted water comprising a well with one or more supply openings for the polluted water and a discharge line for the water to be pumped and a pump device, consisting of a portion fixedly arranged within the well and comprising a pump housing provided with a suction opening at the lower side, which is in connection with the polluted water collected in the well and provided
  • Such an apparatus is known from German Auslegeschrift 1.190.794 especially the embodiment of FIG. 2.
  • the pumping apparatus is divided into two portions, so that it is possible to combine one portion with different other portions.
  • the sealing between the two portions takes place by conical surfaces, whereby the pressure of the liquid to be pumped tries to raise the removable portion, so that the sealing can be broken. Further the liquid to be pumped is discharged directly from the pump housing, without contact with the motor housing, so that liquid cannot be used for cooling the electric motor.
  • the present invention is based on the idea that a pumping apparatus for polluted water, such as sewage water, has to be inspected after a certain operation time in order to see whether certain parts have to be cleaned, renewed or repaired.
  • These parts are the electric motor, the bearings of the pump and motor shaft, the seals and the impeller, torque-flow impeller (in German Wirbelrad) or propeller.
  • the fixedly arranged portion further comprises a vertical surrounding shell, above the pump housing, the open upper end of which leads to the lower end of the shell, which shell at or in the vicinity of the upper end closed by a cover is provided with a connection for the discharge line
  • the removable portion further comprises a plate substantially perpendicular to the pump axis, which plate all around is connected with the motor housing and cooperates in a sealing way with the upper end of the pump housing in order to seal this pump housing at the upper side except an opening in the plate, which forms the discharge opening andwhich connects the space within the pump housing with the space within the shell.
  • the sealing between both portions is formed by the plate and the upper end of the pump housing, whereby the delivery pressure of the water does not affect the sealing, because this pressure is discharged through the discharge opening in the plate.
  • the motor housing is cooled by the flowing water, so that the capacity of the electric motor can be lower than without cooling.
  • the well consists in a known way of a concrete casting with sidewalls l, a bottom 2 and an upperwall 3.
  • the cross-section form of the well is generally rectangular.
  • a supply line 4 is connected on one or more of the sidewalls 1 .
  • the water is collected in the lower part of the well.
  • the discharge line 5 for the water to be pumped extends through an opening in the sidewall of the well and is connected with a stub 6 of a preferably cylindrical shell 7, which is permanently fixed in the well and fits in the opening in the upperwall 3.
  • this shell is closed by a cover 8, connected with the shell by bolts or the like.
  • the pump housing On the lower end of the shell the pump housing is connected, which has preferably the form of a snailshell, and which can be made from metal sheet with a bottom plate 9 and a spiral-shaped upright 10.
  • a suction housing 11 is connected to this bottom plate 9, which suction housing is provided with one or more inlet openings 12, while in the bottom plate 9 a central suction opening 13 is present.
  • the suction housing 11 rests on the bottom 2 of the well and in this way also the pump housing 9, l0 and the shell 7 are resting on the bottom.
  • the shell 7 projects beyond the sidewall 10 of the pump housing, so that a flange is formed.
  • the shell 7, the pump housing 9, 10 and the suction housing 11 form the fixed portion of the pumping apparatus.
  • annular connecting plate 14 is arranged, preferably by welding connected to the shell 7 and the sidewall 10.
  • the removable portion of the pumping apparatus comprises a motor housing 15 with therein an electric motor not shown and a pump impeller, torque-flow impeller or the like, indicated with 16, projecting beyond the motor housing 15.
  • the pump can also be carried out as a screw pump.
  • bearings are arranged in a known way for the motorshaft 17, on its end the impeller or the torque-flow impeller is present.
  • a plate 18 is connected to the lower end of the motor housing 15, which plate is fixed all around, for instance by bolts, against a flange of the motor housing 15.
  • this plate 18 forms the upper wall of the pump housing 9, 10.
  • the removable portion of the pumping apparatus has a sufficient weight to form a sealing between the upper edge of the upright wall 10 and the plate 18.
  • the plate 18 fits with some clearance within the shell 7.
  • the pump housing is preferably in the form of a snail-shell, as usual at centrifugal pumps, the plate 18 projects at the left side of the drawing further beyond the upper edge of the upright wall than at the right side in the drawing.
  • sufficient space' is formed for arranging a slot-shaped opening in the plate 18, through which with some clearance a vertical rod or strip 21 is extending.
  • This rod or strip is fixedly arranged in the well and serves as guiding at lowering and raising of the removable portion of the pumping apparatus and prevents that this portion rotates with respect to the fixed portion if the motor is started.
  • the cable for supplying electric energy to the motor is indicated with 22, which cable via a cable channel 23 is further connected to an energy source.
  • the removable portion of the pumping apparatus is via an eye 24 and a chain 25 connected to a hook 26 on the cover 8.
  • the chain 25 can be released from the hook 26 and can be connected with the lifting hook of a pulley block or the like, which is supported by a gin, which gin is arranged above the well, so that the removable pump portion can be removed from the well by means of the chain. It is not necessary to enter the well. After inspection the pump portion is lowered again into the well and the cover 8 is closed again.
  • the water flowing through the line 4 is collecting in the well. If a certain level is reached, the electric motor is started, by which this water comes in the pump housing via the openings 12 and 13. In this pump housing in a known way the pressure is increased, so that the water is delivered upwardly via the discharge opening and is removed via the discharge line 5. During operation the electric motor is cooled by the water flowing along the motor housing. In this way a smaller motor capacity can be applied, then would be necessary without this cooling. So in this way the pump capacity is increased compared with the weight to be lifted.
  • Well pumping apparatus for polluted water comprising a well with one or more supply openings for the polluted water and a discharge line for the water to be pumped and a pump device, consisting of a portion fixedly arranged within the well and comprising a pump housing provided with a suction opening at the lower side, which is in connection with the polluted water collected in the well and provided with a discharge opening, and of a portion which is removable from the well and which comprises an electric motor, a motor housing surrounding this motor and an impeller extending beyond this housing, characterized in that the fixedly arranged portion further comprises a vertical surrounding shell, above the pump housing, the open upper end of which leads to the lower end of the shell, which shell at or in the vicinity of the upper end closed by a cover is provided with a connection for the discharge line, and whereby the removable portion further comprises a plate substantially perpendicular to the pump axis, which plate all around is connected with the motor housing and cooperates in a sealing way with the upper end of the pump housing in order to seal this
  • the upper end of the pump housing is arranged at some distance from the lower end of the shell, so that an upright flange is formed, with which the lower surface of the plate cooperates sealingly, which plate fits with some clearance within the shell.
  • Well pumping apparatus according to claim 1, characterized in that means are present for preventing rotation of the removable portion of the pumping apparatus with respect to the fixedly arranged portion.
  • Well pumping apparatus characterized in that said means comprise an upright extending rod or the like, arranged against or in the vicinity of the shell at its inner side and within an opening in the plate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A well pumping apparatus for polluted water is disclosed wherein a housing portion is fixedly arranged within the wall. A removable portion, comprising an electric motor, a motor housing and an impeller, is arranged to sealingly engage the fixed housing portion with the well to define a pumping chamber.

Description

[ 1 WELL PUMPING APPARATUS FOR lPOlLLUTED WATER Louris Bood, Rodenrijs, Netherlands Mowid Anstalt, Vaduz, Liechtenstein Filed: Sept. 22, 1971 Appl. No.: 182,806
Inventor:
Assignee:
US. Cl ..417/360, 415/201 Int. Cl ..F04d 29/40 Field of Search ..4l7/360, 358, 424; 415/201 References Cited UNITED STATES PATENTS 3,234,885 Englesson 4l7/36O lM3l'Ch 13, 1973 3,635,606 l/l972 Blum ..417/360 Primary Examiner-Carlton R. Croyle Assistant Examiner-Richard J. Sher Attorney-Carroll B. Quaintance et al.
[57] ABSTRACT A well pumping apparatus for polluted water is disclosed wherein a housing portion is fixedly arranged within the wall. A removable portion, comprising an electric motor, a motor housing and an impeller, is arranged to sealingly engage the fixed housing portion with the well to define a pumping chamber.
5 Claims, 1 Drawing Figure a gl WELL PUMPING APPARATUS FOR POLLUTED WATER The invention relates to a well pumping apparatus for polluted water, comprising a well with one or more supply openings for the polluted water and a discharge line for the water to be pumped and a pump device, consisting of a portion fixedly arranged within the well and comprising a pump housing provided with a suction opening at the lower side, which is in connection with the polluted water collected in the well and provided with the discharge line, and of a portion which is removable from the well and which comprises an electric motor, a motor housing surrounding this motor and an impeller, torque-flow impeller (in German Wirbelrad) or propeller extending beyond this housing. Such an apparatus is known from German Auslegeschrift 1.190.794 especially the embodiment of FIG. 2. According to this embodiment the pumping apparatus is divided into two portions, so that it is possible to combine one portion with different other portions. In this known apparatus the sealing between the two portions takes place by conical surfaces, whereby the pressure of the liquid to be pumped tries to raise the removable portion, so that the sealing can be broken. Further the liquid to be pumped is discharged directly from the pump housing, without contact with the motor housing, so that liquid cannot be used for cooling the electric motor.
The present invention is based on the idea that a pumping apparatus for polluted water, such as sewage water, has to be inspected after a certain operation time in order to see whether certain parts have to be cleaned, renewed or repaired. These parts are the electric motor, the bearings of the pump and motor shaft, the seals and the impeller, torque-flow impeller (in German Wirbelrad) or propeller.
According to the present invention only that portion of the pumping apparatus is lifted from the well which contains said parts. In this way much greater apparatuses can be used without the requirement of a very great lifting device.
This is reached according to the present invention in that the fixedly arranged portion further comprises a vertical surrounding shell, above the pump housing, the open upper end of which leads to the lower end of the shell, which shell at or in the vicinity of the upper end closed by a cover is provided with a connection for the discharge line, and whereby the removable portion further comprises a plate substantially perpendicular to the pump axis, which plate all around is connected with the motor housing and cooperates in a sealing way with the upper end of the pump housing in order to seal this pump housing at the upper side except an opening in the plate, which forms the discharge opening andwhich connects the space within the pump housing with the space within the shell.
The sealing between both portions is formed by the plate and the upper end of the pump housing, whereby the delivery pressure of the water does not affect the sealing, because this pressure is discharged through the discharge opening in the plate.
The motor housing is cooled by the flowing water, so that the capacity of the electric motor can be lower than without cooling.
Further advantages and features of the present in vention will be clear from the following description and from the claims.
The invention will be explained with reference to the drawing, in which a longitudinal section of the well pumping apparatus according to the present invention is shown.
The well consists in a known way of a concrete casting with sidewalls l, a bottom 2 and an upperwall 3. The cross-section form of the well is generally rectangular. On one or more of the sidewalls 1 a supply line 4 is connected. Thus the water is collected in the lower part of the well.
The discharge line 5 for the water to be pumped extends through an opening in the sidewall of the well and is connected with a stub 6 of a preferably cylindrical shell 7, which is permanently fixed in the well and fits in the opening in the upperwall 3.
At the upperside this shell is closed by a cover 8, connected with the shell by bolts or the like.
On the lower end of the shell the pump housing is connected, which has preferably the form of a snailshell, and which can be made from metal sheet with a bottom plate 9 and a spiral-shaped upright 10.
A suction housing 11 is connected to this bottom plate 9, which suction housing is provided with one or more inlet openings 12, while in the bottom plate 9 a central suction opening 13 is present. The suction housing 11 rests on the bottom 2 of the well and in this way also the pump housing 9, l0 and the shell 7 are resting on the bottom.
The shell 7 projects beyond the sidewall 10 of the pump housing, so that a flange is formed.
The shell 7, the pump housing 9, 10 and the suction housing 11 form the fixed portion of the pumping apparatus. Between the lower end of the shell 7 and the upper end of the sidewall 10 an annular connecting plate 14 is arranged, preferably by welding connected to the shell 7 and the sidewall 10.
The removable portion of the pumping apparatus comprises a motor housing 15 with therein an electric motor not shown and a pump impeller, torque-flow impeller or the like, indicated with 16, projecting beyond the motor housing 15. The pump can also be carried out as a screw pump.
In the motor housing 15 bearings are arranged in a known way for the motorshaft 17, on its end the impeller or the torque-flow impeller is present.
Between the impeller or the torque-flow impeller 16 and the motor housing 15 seals are present against polluted water (not shown).
A plate 18 is connected to the lower end of the motor housing 15, which plate is fixed all around, for instance by bolts, against a flange of the motor housing 15.
When the removable portion of the pumping apparatus is resting on the fixed portion, this plate 18 forms the upper wall of the pump housing 9, 10.
In the plate there is a deliver opening 19.
The removable portion of the pumping apparatus has a sufficient weight to form a sealing between the upper edge of the upright wall 10 and the plate 18.
As appears from the drawing the plate 18 fits with some clearance within the shell 7. By the fact that the pump housing is preferably in the form of a snail-shell, as usual at centrifugal pumps, the plate 18 projects at the left side of the drawing further beyond the upper edge of the upright wall than at the right side in the drawing. In this way sufficient space'is formed for arranging a slot-shaped opening in the plate 18, through which with some clearance a vertical rod or strip 21 is extending. This rod or strip is fixedly arranged in the well and serves as guiding at lowering and raising of the removable portion of the pumping apparatus and prevents that this portion rotates with respect to the fixed portion if the motor is started.
The cable for supplying electric energy to the motor is indicated with 22, which cable via a cable channel 23 is further connected to an energy source.
The removable portion of the pumping apparatus is via an eye 24 and a chain 25 connected to a hook 26 on the cover 8.
After removing this cover 8 the chain 25 can be released from the hook 26 and can be connected with the lifting hook of a pulley block or the like, which is supported by a gin, which gin is arranged above the well, so that the removable pump portion can be removed from the well by means of the chain. It is not necessary to enter the well. After inspection the pump portion is lowered again into the well and the cover 8 is closed again.
The water flowing through the line 4 is collecting in the well. If a certain level is reached, the electric motor is started, by which this water comes in the pump housing via the openings 12 and 13. In this pump housing in a known way the pressure is increased, so that the water is delivered upwardly via the discharge opening and is removed via the discharge line 5. During operation the electric motor is cooled by the water flowing along the motor housing. In this way a smaller motor capacity can be applied, then would be necessary without this cooling. So in this way the pump capacity is increased compared with the weight to be lifted.
1 claim:
1. Well pumping apparatus for polluted water, comprising a well with one or more supply openings for the polluted water and a discharge line for the water to be pumped and a pump device, consisting of a portion fixedly arranged within the well and comprising a pump housing provided with a suction opening at the lower side, which is in connection with the polluted water collected in the well and provided with a discharge opening, and of a portion which is removable from the well and which comprises an electric motor, a motor housing surrounding this motor and an impeller extending beyond this housing, characterized in that the fixedly arranged portion further comprises a vertical surrounding shell, above the pump housing, the open upper end of which leads to the lower end of the shell, which shell at or in the vicinity of the upper end closed by a cover is provided with a connection for the discharge line, and whereby the removable portion further comprises a plate substantially perpendicular to the pump axis, which plate all around is connected with the motor housing and cooperates in a sealing way with the upper end of the pump housing in order to seal this pump housing at the upper side except for an opening in the plate, said opening forming the discharge opening connecting connects the space within the pump housing with the s ace within the shell.
2. Wel pumping apparatus according to claim 1,
characterized in that the upper end of the pump housing is arranged at some distance from the lower end of the shell, so that an upright flange is formed, with which the lower surface of the plate cooperates sealingly, which plate fits with some clearance within the shell.
3. Well pumping apparatus according to claim 1, characterized in that with the lower surface of the pump housing a suction housing is connected, which rests directly on the bottom of the well, so that the removable portion of the pumping apparatus is indirectly supported by the bottom of the well.
4. Well pumping apparatus according to claim 1, characterized in that means are present for preventing rotation of the removable portion of the pumping apparatus with respect to the fixedly arranged portion.
5. Well pumping apparatus according to claim 4, characterized in that said means comprise an upright extending rod or the like, arranged against or in the vicinity of the shell at its inner side and within an opening in the plate.
I! C I

Claims (5)

1. Well pumping apparatus for polluted water, comprising a well with one or more supply openings for the polluted water and a discharge line for the water to be pumped and a pump device, consisting of a portion fixedly arranged within the well and comprising a pump housing provided with a suction opening at the lower side, which is in connection with the polluted water collected in the well and provided with a discharge opening, and of a portion which is removable from the well and which comprises an electric motor, a motor housing surrounding this motor and an impeller extending beyond this housing, characterized in that the fixedly arranged portion further comprises a vertical surrounding shell, above the pump housing, the open upper end of which leads to the lower end of the shell, which shell at or in the vicinity of the upper end closed by a cover is provided with a connection for the discharge line, and whereby the removable portion further comprises a plate substantially perpendicular to the pump axis, which plate all around is connected with the motor housing and cooperates in a sealing way with the upper end of the pump housing in order to seal this pump housing at the upper side except for an opening in the plate, said opening forming the discharge opening connecting connects the space within the pump housing with the space within the shell.
1. Well pumping apparatus for polluted water, comprising a well with one or more supply openings for the polluted water and a discharge line for the water to be pumped and a pump device, consisting of a portion fixedly arranged within the well and comprising a pump housing provided with a suction opening at the lower side, which is in connection with the polluted water collected in the well and provided with a discharge opening, and of a portion which is removable from the well and which comprises an electric motor, a motor housing surrounding this motor and an impeller extending beyond this housing, characterized in that the fixedly arranged portion further comprises a vertical surrounding shell, above the pump housing, the open upper end of which leads to the lower end of the shell, which shell at or in the vicinity of the upper end closed by a cover is provided with a connection for the discharge line, and whereby the removable portion further comprises a plate substantially perpendicular to the pump axis, which plate all around is connected with the motor housing and cooperates in a sealing way with the upper end of the pump housing in order to seal this pump housing at the upper side except for an opening in the plate, said opening forming the discharge opening connecting connects the space within the pump housing with the space within the shell.
2. Well pumping apparatus according to claim 1, characterized in that the upper end of the pump housing is arranged at some distance from the lower end of the shell, so that an upright flange is formed, with which the lower surface of the plate cooperates sealingly, which plate fits with some clearance within the shell.
3. Well pumping apparatus according to claim 1, characterized in that with the lower surface of the pump housing a suction housing is connected, which rests directly on the bottom of the well, so that the removable portion of the pumping apparatus is indirectly supported by the bottom of the well.
4. Well pumping apparatus according to claim 1, characterized in that means are present for preventing rotation of the removable portion of the pumping apparatus with respect to the fixedly arranged portion.
US00182806A 1971-09-22 1971-09-22 Well pumping apparatus for polluted water Expired - Lifetime US3720488A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807900A (en) * 1972-09-25 1974-04-30 Flood Control Valve Co Under floor pumping means
US4411599A (en) * 1980-10-02 1983-10-25 Bernhard Kessel Drain fitting with built-in pump
DE3416324A1 (en) * 1984-05-03 1985-11-07 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Submersible-motor pump
DE4301176A1 (en) * 1993-01-19 1994-07-21 Klein Schanzlin & Becker Ag Pipe shaft for a pipe casing pump

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234885A (en) * 1963-02-20 1966-02-15 Flygts Pumpar Ab Pump device
US3635606A (en) * 1968-12-24 1972-01-18 Albert Blum Submersible pump assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234885A (en) * 1963-02-20 1966-02-15 Flygts Pumpar Ab Pump device
US3635606A (en) * 1968-12-24 1972-01-18 Albert Blum Submersible pump assembly

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807900A (en) * 1972-09-25 1974-04-30 Flood Control Valve Co Under floor pumping means
US4411599A (en) * 1980-10-02 1983-10-25 Bernhard Kessel Drain fitting with built-in pump
DE3416324A1 (en) * 1984-05-03 1985-11-07 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Submersible-motor pump
DE4301176A1 (en) * 1993-01-19 1994-07-21 Klein Schanzlin & Becker Ag Pipe shaft for a pipe casing pump
US5452992A (en) * 1993-01-19 1995-09-26 Ksb Aktiengesellschaft Tubular shaft for a tubular-type pump

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