EP2813708A2 - Schaufelradmesser und dieses Messer umfassende Zerreißpumpe - Google Patents

Schaufelradmesser und dieses Messer umfassende Zerreißpumpe Download PDF

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Publication number
EP2813708A2
EP2813708A2 EP14171495.6A EP14171495A EP2813708A2 EP 2813708 A2 EP2813708 A2 EP 2813708A2 EP 14171495 A EP14171495 A EP 14171495A EP 2813708 A2 EP2813708 A2 EP 2813708A2
Authority
EP
European Patent Office
Prior art keywords
knife
impeller
hole
blades
vanes
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.)
Withdrawn
Application number
EP14171495.6A
Other languages
English (en)
French (fr)
Other versions
EP2813708A3 (de
Inventor
Michel Caigny
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KSB SAS
Original Assignee
KSB SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KSB SAS filed Critical KSB SAS
Publication of EP2813708A2 publication Critical patent/EP2813708A2/de
Publication of EP2813708A3 publication Critical patent/EP2813708A3/de
Withdrawn legal-status Critical Current

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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
    • 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
    • F04D7/045—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 with means for comminuting, mixing stirring or otherwise treating
    • 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

Definitions

  • the present invention relates to macerator pumps and methods for grinding fibers suspended in liquid, such as wastewater.
  • the maceration system is composed of two parts (one fixed 41 and the other rotating 40 with the motor shaft).
  • the set is positioned at the suction of the pump.
  • the cut of waste is parallel to the axis of the pump.
  • the rotating part has two lugs located at the periphery on the large diameter of the knife, diametrically opposed.
  • the lugs have sharp edges. Their shapes or profiles do not describe wheel blades because they do not delimit hydraulic channels, they do not give flow direction to pumped liquids. It is the pump wheel placed behind which, with its blades, provides this function. This grinding assembly is positioned largely in front of the pump wheel.
  • the splitting system consists of two parts (one fixed 50 and the other rotating 60 with the motor shaft). This set is positioned immediately behind the first above. The cut is always parallel to the axis, but this time at the pump wheel.
  • Room 60 ( figure 3 ) has three lugs with a sharp edge (these are not wheel vanes) and rotates inside the workpiece 50, which has four lugs having a sharp edge.
  • the maceration system of US Patent 5,016,825 consists of two parts (one fixed and the other rotating with the motor shaft).
  • the set is positioned at the suction of the pump.
  • the cut of waste is parallel to the axis of the pump.
  • the rotating part has two lugs located at the periphery on the large diameter of the knife, diametrically opposed.
  • the lugs have sharp edges. Their shapes or profiles do not describe wheel blades, they do not delimit hydraulic channels and they do not give direction of circulation to pumped liquids. It is the pump wheel placed behind which, with its blades, alone assumes this function.
  • the system of misplacement of the patent application WO 2007/067532 consists of two parts (one fixed 62 and the other rotating with the motor shaft 60).
  • the set is positioned at the suction of the pump.
  • the cut of waste is parallel to the axis of the pump.
  • the rotating part has two lugs located at the periphery on the large diameter of the knife, diametrically opposed.
  • the lugs have sharp edges. Their shapes or profiles do not describe wheel blades, they do not delimit hydraulic channels and they do not give flow direction to pumped liquids. It is the pump wheel placed behind which, with its blades, alone assumes this function.
  • the system of misplacement of the patent application WO 2005/035447 consists of two pieces (one fixed 64 and the other rotating with the motor shaft 66 - Figure 7).
  • the set is positioned at the suction of the pump.
  • the cut of waste is parallel to the axis of the pump and partly inclined.
  • the rotating part has two lugs located at the periphery on the large diameter of the knife, diametrically opposed.
  • the lugs have sharp edges. Their shapes or profiles do not describe wheel blades, they do not delimit hydraulic channels and they do not give flow direction to pumped liquids.
  • the macerator pump thus has a better hydraulic efficiency or, with equal hydraulic efficiency, requires less power.
  • the blades with cutting edges thus play not only the role of cutting members, but also have a channeling effect for the setting speed and pressure of the water conveyed.
  • the knife thus serves as a prior impeller in the form of a vortex wheel, whose profile corresponds precisely, being in the extension, that of the impeller. As the cut is made perpendicularly to the impeller shaft of the pump, the knife does not disturb the liquid vein that passes through the hydraulics consisting of paths created continuously by the blades of the knife and those of the impeller.
  • the vanes are evenly distributed around the hole and are arranged so that the intrados and extrados of each blade extend from the peripheral wall towards the hole, the intrados and / or the extrados blades having sharp edges.
  • the securing ring is crenellated on a front face intended to face the vanes of the knife and the parts between the slots have, in the direction of the shaft, the outer edge, the closer to the impeller, closer to the impeller than the inner edge, the closer to the impeller.
  • the portions between the slots are convexly curved.
  • Both the knife and the securing ring are made of a hard material, especially a metal material, for example hardened steel and are themselves new objects.
  • the knife represented Figures 1 to 3 is formed of a hardened steel piece defining a central hole 1 for the clamping passage of a fixing screw intended to come on the shaft end of the pump driving the impeller. It comprises a peripheral wall 2 and a face 3 extending from the peripheral wall 2 towards the hole 1, but remaining at a distance therefrom. This distance is filled by a concave inlet cone 4. On the horizontal face 3, are formed four vanes 5 angularly distributed regularly around the axis x, x 'of the hole 1. Each blade 5 has an upper surface 6 and a lower surface 7, whose edges are sharp. The intrados and the extrados of each vane 5 extends from the peripheral wall 2 towards the hole 1. All the vanes 5 are directed in the same direction on the top of the knife.
  • the securing ring shown in figure 4 is in the same material as the knife. It comprises nine slots 8 on a front face, the opposite end face being flat. The portions 9 between the slots have, in the direction of the axis xx ', the outer edge 10 closest to the impeller, i.e. the edge at the top of the figure 4 , closer to the impeller than is the inner edge 11 closest to the impeller. The outer edge 10 is further from the axis xx 'than the inner edge 11 is.
  • the securing ring has the same outside diameter as the outside diameter of the knife.
  • the macerator pump shown in section at the figure 5 comprises a shaft 12 rotated by a motor (not shown) and an impeller 13 having the same number of blades 14 as the knife 18 and rotatably connected to the shaft 12 facing a closure plate 15 defining the outside a suction zone 16 of the fluid conveyed.
  • the pump body 24 consists of the closure plate 15, the lower part of a pump casing 22 and a bearing 23.
  • the fluid conveyed goes from the suction zone 16 to a discharge pipe 17 passing successively, through the entry cone, between the knife 18, as shown in FIGS. Figures 1 to 3 and which rotates while being secured to the shaft 12, and the securing ring 19 fixed to the closure plate 15 and in the impeller 13.
  • the blades 5 of the knife and thus their cutting edges are completely inside the body 24 They are outside the suction zone 16.
  • the knife 18 is indexed to the impeller 13 in that a pin 20 of the impeller 13 enters a hole 21 conjugate knife 18, so that each blade 14 of the impeller 13 is in the extension of a corresponding blade 5 of the knife.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Crushing And Pulverization Processes (AREA)
EP14171495.6A 2013-06-10 2014-06-06 Schaufelradmesser und dieses Messer umfassende Zerreißpumpe Withdrawn EP2813708A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1301318A FR3006720A1 (fr) 2013-06-10 2013-06-10 Couteau a aubes et pompe dilaceratrice le comportant

Publications (2)

Publication Number Publication Date
EP2813708A2 true EP2813708A2 (de) 2014-12-17
EP2813708A3 EP2813708A3 (de) 2015-03-11

Family

ID=49709712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14171495.6A Withdrawn EP2813708A3 (de) 2013-06-10 2014-06-06 Schaufelradmesser und dieses Messer umfassende Zerreißpumpe

Country Status (2)

Country Link
EP (1) EP2813708A3 (de)
FR (1) FR3006720A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107638917A (zh) * 2016-07-22 2018-01-30 台州天聚科技有限公司 卫生间垃圾处理机粉碎装置
CN112343826A (zh) * 2020-11-21 2021-02-09 越连机电有限公司 一种切割泵

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8526769U1 (de) 1985-09-19 1985-10-31 Jung Pumpen GmbH, 4803 Steinhagen Schmutzwasserpumpe
WO2005035447A2 (en) 2003-10-14 2005-04-21 Crane Pumps & Systems, Inc. Two stage sewage grinder pump
WO2007067532A2 (en) 2005-12-05 2007-06-14 Little Giant Pump Company Grinder pump with self aligning cutter assembly
US20090067992A1 (en) 2007-09-06 2009-03-12 Keener Robert M Sewage Pump

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1511657A (fr) * 1966-12-23 1968-02-02 Pierre Mengin Ets Perfectionnements aux pompes dilacératrices
US5016825A (en) * 1990-02-14 1991-05-21 Mcneil (Ohio) Corporation Grinding impeller assembly for a grinder pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8526769U1 (de) 1985-09-19 1985-10-31 Jung Pumpen GmbH, 4803 Steinhagen Schmutzwasserpumpe
WO2005035447A2 (en) 2003-10-14 2005-04-21 Crane Pumps & Systems, Inc. Two stage sewage grinder pump
WO2007067532A2 (en) 2005-12-05 2007-06-14 Little Giant Pump Company Grinder pump with self aligning cutter assembly
US20090067992A1 (en) 2007-09-06 2009-03-12 Keener Robert M Sewage Pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107638917A (zh) * 2016-07-22 2018-01-30 台州天聚科技有限公司 卫生间垃圾处理机粉碎装置
CN112343826A (zh) * 2020-11-21 2021-02-09 越连机电有限公司 一种切割泵

Also Published As

Publication number Publication date
EP2813708A3 (de) 2015-03-11
FR3006720A1 (fr) 2014-12-12

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