US2921683A - Apparatus for disintegrating and automatically screening coarse flowing matter carried in liquor - Google Patents

Apparatus for disintegrating and automatically screening coarse flowing matter carried in liquor Download PDF

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Publication number
US2921683A
US2921683A US500962A US50096255A US2921683A US 2921683 A US2921683 A US 2921683A US 500962 A US500962 A US 500962A US 50096255 A US50096255 A US 50096255A US 2921683 A US2921683 A US 2921683A
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United States
Prior art keywords
drum
disintegrating
bars
combs
liquor
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Expired - Lifetime
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US500962A
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English (en)
Inventor
Strenz Karl
Dankesreither George
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Individual
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Individual
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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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • 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
    • 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
    • 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
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B02C2018/188—Stationary counter-knives; Mountings thereof

Definitions

  • the present invention relates to a device capable of disintegrating floating matter carried in liquors, such as sewage, trade effluent, turbine propelling water, etc.
  • the solid floating matter contained in such liquors is reduced in such a manner that it can pass a screemng arrangement so to avoid contamination, clogging or similar operating troubles within sewers, valves, pumping stations, turbines, etc.
  • the novel mechanism of the present invention comprises a revolving drum screen consisting of several grates that are provided with slots staggered along the circumference of said drum.
  • a plurality of combs form close fits with said slots, simultaneously grazing the surface of the drum screen and, consequently, the 'notches of the grate bars act as disintegrating tools.
  • slotted drum In the event the slotted drum is damaged by driftwood or similar bulky floating objects, it has to be put out of service and disassembled. This entails either a several days stoppage of the entire plant, or else, a number of complete drums have to be kept in stock as spares, or a coarse rack has to be installed to prevent large floating objects, such as beams, poles, boards, etc., from getting into the comminutor basin.
  • the present modern device includes several combs that are spread over the drum area and pass through the drum slits or slots, simultaneously interacting with a number of disintegrating elements which are worked into the peripheral drum area.
  • the comminuting effect is complete and unobjectionable, and virtually no backing-up or conglomeration of solids in front of the combs results.
  • wires and similar metal objects slip oflf and drop to the bottom of the plant, whereas in all previous designs, cutters are inserted on the drum area only Within easy access to such metal pieces and, consequently, are readily subject to damage thereby.
  • the screens of my newly invented mechanism are damaged, exchange or repairs can be performed easily without necessitating dismantling of the entire drum screen.
  • the present novel plant also offers advantages from the point of view of construction.
  • the disintegrating elements on the drum area are composed of recesses, notches, etc.
  • the screening drum of the invention consists of several bar grates. If any of the bars are damaged, replacement is possible without the drum itself having to be disassembled. Rte-sharpening of the cutting edges of the disintegrating elements is also simple to accomplish.
  • the slotted drum of the present invention is composed of a plurality of grates, it can be built in different sizes, i.e., with different vertical extension, without employing a special mold for each size.
  • Another advantage of the present apparatus is the ability to reverse the direction of rotation of the drum. When this is desired, the grates must be unscrewed from the supporting frame placed upside down and re-inserted. This constructional feature is of considerable value since, for example, when enlarging a sewer system, eventually additional drum screens have to be installed, frequently necessitating an inversion of the direction of rotation.
  • Figure 2 is a sectional view showingthe developed peripheral area of the revolving drum including the special arrangement of the cutting elements
  • Figure 3 is a detail sketch of part of the comminuter plant of Figure 1, showing a sectional of the screening drum and one of the columns bearing the combs;
  • Figure 4 is a sectional view along the line 44 of the drum screen in Figure 3;
  • Figure 5 is a plan view of a rib and related disintegrating elements of a bar grate accordin to my invention
  • Figure 6 is a plan view of a bar grate constitutin one segment of the drum wall
  • Figure 7 is a sectional view of the bar grate of Figure 6;
  • Figure 8 is a top plan view of a rib section
  • Figure 9 is a side view of a rib section.
  • the comminutor shown generally at 27, is installed into the sewer 1, having a wall 28, in such a manner that the waste liquor flows in accordance with directional markers A and B.
  • the comminutor includes the casing 4 and the rotor or slotted drum indicated generally as 5, which comprises supporting arms 20 and a plurality of bar grates 11 each made of a plurality of grate bars 17 and longitudinal braces 25.
  • the casing 4 comprises an upper part 6 and a bottom piece 7, connected by several vertical supporting columns 8. Atop the upper part 6, another smaller case 9 houses the electric driving motor (not shown).
  • This protective covering 9 is provided with a ventilating shaft 10.
  • the bar grates 11 of the drum screen 5 are held in place by several supporting arms 20.
  • the several sets of combs 12 are secured to the supporting columns 8.
  • each comb consists of a set of springs 29 provided with slotted holes. These springs are shiftable individually and, consequently, relatively to each other. They can be adjusted so as to obtain an inclined cutting edge 16 which is particularly eificient.
  • the combs 12 pass through the grates 11. Preferably, at least six combs are used, although there can be employed as few as three combs.
  • each bar 17 consists of a single piece which can be made, for example, of
  • the drum slots 21, which form a close fit with the combs 12, are formed by circularly curved grate bars 17, some of which are provided with recesses or notches 23 to create the cutting edges 24 on their outer surfaces.
  • the bars 17 shown in Figures 3, 4, and 7 are bars which do not have the recesses or notches, whereas the bars presented in Figures 5, 6, 8, and 9 are bars which have the cutting notches or recesses on their outer peripheries. Having both recesses 23 and cutting edges 24, this special arrangement of the disintegrating or cutting elements provides a saw-tooth shaped peripheral area.
  • the parallel ribs 17 are held in place by longitudinal braces 25 which, preferably, are disposed at both sides and in the middle of each bar 17 as by a force or friction fit.
  • the aforementioned clamping screws 19 pierce into the boreholes 22.
  • the distintegrating or cutting elements 24- are also preferably gradually narrowed contrary to the direction of rotation, as roughly indicated in Figures 8 and 9.
  • the cutting elements 24 can be arranged in rows inclined towards the drum axle, that is, the cutting edges 24 can be arranged in vertical alignment with each other on adjacent bars or can be olfset with respect to one another or adjacent bars.
  • some grate bars 17, provided with cutting elements, and some grate bars 17, having none, can be mounted in staggered order. This is true also ofpthe various groups of combs already described above. This arrangement provides both absolutely uniform cutting action and uniform distribution of the disintegrating forces over the entire drum area, while, simultaneously, avoiding backups or large conglomerations.
  • Figures 2, 3, and 7 present grates 11 having bars 17, which bars have a plain peripheral configuration.
  • the bars presented in Figures 5, 6, 7, and 8 are ones which have a saw tooth peripheral configuration.
  • Figure 2 wherein a schematic representation of the developed area of the drum is shown, the manner in which the bars having a saw tooth peripheral configuration and the bars having a plain peripheral configuration are used, is shown.
  • the present invention encompasses other drum-shaped disintegrating and screening apparatus similar to those described above, in which the cutting elements include recesses, notches, slots, etc., that do not jut beyond the drum circumference, although the specific form of the invention previously recited and shown in the drawings is preferred.
  • a cylindrical drum screen comprising: a plurality of arcuate grates, said grates comprising a plurality of arcuate bars disposed parallel to and spaced from one another whereby arcuate slots are'formed between adjacent bars,'and a plurality of combs each having a head portion and spaced teeth extending from said head portion, said plurality of combs being disposed in sets, said sets being arcuately'displaced from one another around said drum, wherein at least some of said bars have a sawtooth peripheral configuration and wherein said combs are disposed with the teeth thereon extending within said slots and with the head portion between adjacent teeth cooperating with the peripheries of said bars.
  • a cylindrical drum screen comprising: a plurality of arcuate grates, said grates comprising a plurality of arcuate bars disposed parallel to and spaced from one another whereby arcuate slots are formed between adjacent bars, said drum being vertically disposed and wherein some of said grates comprise a plurality of arcuate bars substantially all having a sawtooth peripheral configuration and wherein other of said bars comprise a plurality of arcuate bars substantially all having a plain peripheral configuration, and a plurality of combs each having a head portion andspaced teeth extending from said head portion, wherein said combs are disposed with the teeth thereon extending within said slots and with the head portion between adjacent teeth cooperating with the peripheries of said bars and wherein said grates comprising bars having a sawtooth peripheral configuration are disposed in staggered relation to said grates comprise bars having a plainconfiguration.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Paper (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
US500962A 1954-04-27 1955-04-12 Apparatus for disintegrating and automatically screening coarse flowing matter carried in liquor Expired - Lifetime US2921683A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC9278A DE1191304B (de) 1954-04-27 1954-04-27 Vorrichtung zum Absieben und Zerkleinern von in Fluessigkeiten, insbesondere Abwaessern, mitgefuehrten Schwimmstoffen

Publications (1)

Publication Number Publication Date
US2921683A true US2921683A (en) 1960-01-19

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US500962A Expired - Lifetime US2921683A (en) 1954-04-27 1955-04-12 Apparatus for disintegrating and automatically screening coarse flowing matter carried in liquor

Country Status (6)

Country Link
US (1) US2921683A (xx)
CH (1) CH330229A (xx)
DE (1) DE1191304B (xx)
FR (1) FR1120002A (xx)
GB (1) GB768796A (xx)
NL (1) NL96239C (xx)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091338A (en) * 1959-11-09 1963-05-28 Louise N Millspaugh Alternating comminutor
US3247970A (en) * 1961-09-08 1966-04-26 Hubert & Co Machf N V W System for comminuting and straining sewage and the like
US5833152A (en) * 1997-06-30 1998-11-10 Galanty; William B. Integrated comminuting screening and shredding system for liquid waste channels
US8727248B2 (en) 2010-08-11 2014-05-20 William Galanty Comminutor with screening conditioner

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1270004B (de) * 1964-12-21 1968-06-12 M Jacques Muller Filterelement
GB8622875D0 (en) * 1986-09-23 1986-10-29 Mitchell Cotts Mining Equipmen Screen assembly
DE4141379A1 (de) * 1991-12-14 1993-06-17 Passavant Werke Siebvorrichtung fuer wasser- und abwasserreinigungsanlagen
GB9219111D0 (en) * 1992-09-09 1992-10-21 Hercules Systems Limited Improvements relating to rotary screens
CN105944814B (zh) * 2016-05-30 2018-03-20 无锡科技职业学院 一种超微粉碎机

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE515708A (xx) *
US973A (en) * 1838-10-08 Aimttlar saw fob
US822591A (en) * 1905-02-27 1906-06-05 James Francis Dowding Milling-cutter.
CH185210A (de) * 1935-07-02 1936-07-15 Hebeisen Rudolf Sägeblatt für Kreis- und Gattersägen.
US2079995A (en) * 1934-01-29 1937-05-11 Surfacing Wheel Corp Abrasive tool
USRE22199E (en) * 1942-10-13 Screen
US2317416A (en) * 1941-03-26 1943-04-27 Alfred F Stanley Comminuting apparatus
US2322922A (en) * 1940-02-26 1943-06-29 Chicago Pump Co Comminutor
US2336069A (en) * 1943-01-23 1943-12-07 Chicago Pump Co Through-flow comminutor
US2375455A (en) * 1943-08-16 1945-05-08 Chicago Pump Co Comminutor base seal
DE897506C (de) * 1942-03-20 1953-11-23 Condux Werk Zerkleinerungsvorrichtung
DE911350C (de) * 1941-12-12 1954-05-13 Condux Werk Zerkleinerungsvorrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1999149A (en) * 1935-04-23 Screen
US2085326A (en) * 1936-02-21 1937-06-29 Chicago Pump Co Comminuter
GB480419A (en) * 1936-07-02 1938-02-22 Jones & Attwood Ltd Improvements in or relating to apparatus for straining liquids and comminuting solids in a flow of liquid

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE515708A (xx) *
US973A (en) * 1838-10-08 Aimttlar saw fob
USRE22199E (en) * 1942-10-13 Screen
US822591A (en) * 1905-02-27 1906-06-05 James Francis Dowding Milling-cutter.
US2079995A (en) * 1934-01-29 1937-05-11 Surfacing Wheel Corp Abrasive tool
CH185210A (de) * 1935-07-02 1936-07-15 Hebeisen Rudolf Sägeblatt für Kreis- und Gattersägen.
US2322922A (en) * 1940-02-26 1943-06-29 Chicago Pump Co Comminutor
US2317416A (en) * 1941-03-26 1943-04-27 Alfred F Stanley Comminuting apparatus
DE911350C (de) * 1941-12-12 1954-05-13 Condux Werk Zerkleinerungsvorrichtung
DE897506C (de) * 1942-03-20 1953-11-23 Condux Werk Zerkleinerungsvorrichtung
US2336069A (en) * 1943-01-23 1943-12-07 Chicago Pump Co Through-flow comminutor
US2375455A (en) * 1943-08-16 1945-05-08 Chicago Pump Co Comminutor base seal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091338A (en) * 1959-11-09 1963-05-28 Louise N Millspaugh Alternating comminutor
US3247970A (en) * 1961-09-08 1966-04-26 Hubert & Co Machf N V W System for comminuting and straining sewage and the like
US5833152A (en) * 1997-06-30 1998-11-10 Galanty; William B. Integrated comminuting screening and shredding system for liquid waste channels
US8727248B2 (en) 2010-08-11 2014-05-20 William Galanty Comminutor with screening conditioner

Also Published As

Publication number Publication date
FR1120002A (fr) 1956-06-28
NL96239C (xx)
DE1191304B (de) 1965-04-15
CH330229A (de) 1958-05-31
GB768796A (en) 1957-02-20

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