US3866841A - Submersible pump equipped with cutter - Google Patents

Submersible pump equipped with cutter Download PDF

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Publication number
US3866841A
US3866841A US361244A US36124473A US3866841A US 3866841 A US3866841 A US 3866841A US 361244 A US361244 A US 361244A US 36124473 A US36124473 A US 36124473A US 3866841 A US3866841 A US 3866841A
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US
United States
Prior art keywords
vane
wheel
inlet portion
cutter
lower inlet
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 - Lifetime
Application number
US361244A
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English (en)
Inventor
Masakuni Iwahara
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.)
ELEPON TECHNICAL CENTER KK
Original Assignee
ELEPON TECHNICAL CENTER KK
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 ELEPON TECHNICAL CENTER KK filed Critical ELEPON TECHNICAL CENTER KK
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Publication of US3866841A publication Critical patent/US3866841A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0084—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage
    • B02C18/0092—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage for waste water or for garbage

Definitions

  • ABSTRACT Forelgn Apphcamm Pnomy Data A submersible pump having a vane-wheel formed with p 1972 Japanm' 47406269 cutter means at the bottom inlet portion thereof which cooperates with cutter means which are formed on the [52] US. Cl. 24l/46.11, 241/185 u casing and Which are disposed below the cutter [51] Int. Cl. ..B02c18/40 means on the vane whee].
  • submersible pumps of the open vane-wheel type have the advantage of pumping water or other liquid irrespective of its admixtures, they have the disadvantage that their pumping efficiency is significantly reduced because the cutting of foreign objects is done merely by rocking them between the vanes of said open type vane-wheel and the pump casing.
  • the pumping efficiency of such pumps is particularly low when compared with a pump using a closed type vane-wheel.
  • the primary object of the present invention is to provide a pump of high efficiency by utilizing a closed type vane-wheel in combination with cutters provided to positively cut foreign objects into pieces so that water or other liquid and its admixtures can be pumped in and out easily without substantially reducing the pumping efficiency.
  • the pump according to the present invention utilizes a closed type vane-wheel and foreign objects sucked in with water or other liquid are cut into-pieces at the inlet portions of said vane-wheel and the pump casing by providing cutter blades respectively thereat so that it is possible for the pump to obtain a pumping efficiency as high as in the case of pure water or other liquid having no admixtures contained.
  • FIG. 1 is a vertical sectional view of the pumpconstructed in accordance with the present invention
  • FIG. 2 is a sectional view taken on line 2-2 of FIG. 1;
  • FIG. 3 is a view similar to FIG. 2 and showsa moditied form of cutting blades on the pump casing
  • FIG. 4 is a sectional view similar to FIGS. 2 and 3 showing further modified forms of cutting blades.
  • FIG. 5 is a fragmentary enlarged view of a portion of FIG. 4.
  • a'single cutter blade 6 is connected with the peripheral inner wall forming the inlet portion of the vane-wheel 2 while the pump casing 3 surrounding the bottom of the vane-wheel 2 has in its inlet portion 8 a cutter blade 7 which is connected to the inner peripheral wall forming the inlet portion 8.
  • FIG. 3 shows another embodiment of the invention having a construction slightly different from that of FIG. 2, with the pump casing 3 having at its inlet portion 8 a cross-shaped cutter blade 7a connected'to the inner peripheral wall forming the inlet portion 8.
  • FIGS. 4 and 5 showanother embodiment of the invention wherein the closed type vane-wheel 2 and the pump casing 3, respectively, are each formed with a plurality of cutting blades, there being two in the form illustrated, extending radially inwardly from the inner peripheral walls of the vane-wheel and casing which define the inlet openings.
  • the cutting is effected by means of the angular cutter blades 12 and 13 which extend radially inwardly from the inner periphery of each inlet portion 10 and 8 of the vane-wheel and the pump casing.
  • the cutter blades at the inlet portion 8 of the pump casing 3 serve as a fixed cutter while the cutter blades 6 carried by the rotating vane-wheel act as the rotating cutters, whereby foreign objects are cut into pieces by these cutters crossing with each other.
  • foreign objects after having been cut into pieces, are delivered to the outlet 9 together with water or other liquid through the circular passage 11.
  • the present invention thus provides a pump of high efficiency in which foreign objects are cut between each inlet portion 10 and 8, respectively, of the vanewheel 2 and the pump casing 3 as contrasted with conventional pumps which attempt to cut foreign objects simply by rocking them in the gap between the vanes of the vane-wheel and the pump casing, with pumping efficiency thereby significantly reduced.
  • a submersible pump equipped with cutters for cutting foreign material carried by the liquid being pumped comprising:
  • a rotating vane-wheel having a circular lower inlet portion, a circular outlet portion, and a cutter bar carried at the circular lower inlet portion thereof, said cutter bar being flat and extending diametrically across said circular lower inlet portion in a plane perpendicular to the axis of rotation of said vanewheel, with the area above said cutter bar' being entirely open in said vane-wheel and said circular lower inlet portion likewise being open except for said cutter bar so as to minimize flow restriction through said vane-wheel,
  • a fixed pump casing having a lower inlet portion concentrically arranged around the circular lower inlet portion of said vane-wheel, said casing being formed with cutter means extending into said lower inlet portion of said casing below said cutter bar of said vane-wheel, said cutter means comprising flat of said casing comprises a generally cross-shaped cutter bar.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Food Science & Technology (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
US361244A 1972-09-11 1973-05-17 Submersible pump equipped with cutter Expired - Lifetime US3866841A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972106269U JPS4962504U (pt) 1972-09-11 1972-09-11

Publications (1)

Publication Number Publication Date
US3866841A true US3866841A (en) 1975-02-18

Family

ID=14429350

Family Applications (1)

Application Number Title Priority Date Filing Date
US361244A Expired - Lifetime US3866841A (en) 1972-09-11 1973-05-17 Submersible pump equipped with cutter

Country Status (5)

Country Link
US (1) US3866841A (pt)
JP (1) JPS4962504U (pt)
AU (1) AU452972B2 (pt)
CA (1) CA985569A (pt)
ZA (1) ZA733000B (pt)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982700A (en) * 1974-04-03 1976-09-28 Gordon David Love Mixing devices
US4402648A (en) * 1981-08-31 1983-09-06 A. O. Smith Harvestore Products, Inc. Chopper pump
US4778336A (en) * 1987-07-09 1988-10-18 Weil Pump Company Cutter pump subassembly
US4830810A (en) * 1985-06-28 1989-05-16 Audi Ag. Method of blow molding and fluorinating plastic containers
US20030209616A1 (en) * 2002-05-11 2003-11-13 Moore Roger R. Pump and grinder assembly for use with a steam producing device
US20040146416A1 (en) * 2001-06-13 2004-07-29 Burgess Kevin Edward Apparatus for use in slurry pumps
US20040234370A1 (en) * 2002-09-26 2004-11-25 Mark Simakaski Chopping pump impeller assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE466766B (sv) * 1989-04-27 1992-03-30 Flygt Ab Itt Centrifugalpump avsedd foer pumpning av vaetskor innehaallande fasta partiklar, exempelvis trasor och andra laangstraeckta foeremaal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2496359A (en) * 1946-03-30 1950-02-07 Sulzer Ag Pump disintegrator
US2658453A (en) * 1950-07-22 1953-11-10 Pacific Pumps Inc Nonclogging pumping device
US3155046A (en) * 1962-04-23 1964-11-03 Vaughan Co Centrifugal nonclogging pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2496359A (en) * 1946-03-30 1950-02-07 Sulzer Ag Pump disintegrator
US2658453A (en) * 1950-07-22 1953-11-10 Pacific Pumps Inc Nonclogging pumping device
US3155046A (en) * 1962-04-23 1964-11-03 Vaughan Co Centrifugal nonclogging pump

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982700A (en) * 1974-04-03 1976-09-28 Gordon David Love Mixing devices
US4402648A (en) * 1981-08-31 1983-09-06 A. O. Smith Harvestore Products, Inc. Chopper pump
US4830810A (en) * 1985-06-28 1989-05-16 Audi Ag. Method of blow molding and fluorinating plastic containers
US4778336A (en) * 1987-07-09 1988-10-18 Weil Pump Company Cutter pump subassembly
US20040146416A1 (en) * 2001-06-13 2004-07-29 Burgess Kevin Edward Apparatus for use in slurry pumps
US6951445B2 (en) 2001-06-13 2005-10-04 Weir Warman Ltd Apparatus for use in slurry pumps
US20030209616A1 (en) * 2002-05-11 2003-11-13 Moore Roger R. Pump and grinder assembly for use with a steam producing device
US6708910B2 (en) * 2002-05-11 2004-03-23 Delaware Capital Formation, Inc. Pump and grinder assembly for use with a steam producing device
US20040234370A1 (en) * 2002-09-26 2004-11-25 Mark Simakaski Chopping pump impeller assembly

Also Published As

Publication number Publication date
CA985569A (en) 1976-03-16
ZA733000B (en) 1974-04-24
AU452972B2 (en) 1974-09-19
JPS4962504U (pt) 1974-06-01
AU5555473A (en) 1974-09-19

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