US3584743A - Comminutor for solids carried in flowing liquids - Google Patents

Comminutor for solids carried in flowing liquids Download PDF

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Publication number
US3584743A
US3584743A US877631A US3584743DA US3584743A US 3584743 A US3584743 A US 3584743A US 877631 A US877631 A US 877631A US 3584743D A US3584743D A US 3584743DA US 3584743 A US3584743 A US 3584743A
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US
United States
Prior art keywords
drum
teeth
pieces
cutter
comb
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
US877631A
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English (en)
Inventor
Herbert Dinges
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.)
Condux Werk Herbert A Merges KG
Original Assignee
Condux Werk Herbert A Merges KG
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 Condux Werk Herbert A Merges KG filed Critical Condux Werk Herbert A Merges KG
Application granted granted Critical
Publication of US3584743A publication Critical patent/US3584743A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

  • a comminutor for solid materials carried by a flowing liquid includes a sieve drum formed of axially spaced rings connected together.
  • a comb unit is mounted adjacent to the drum and has a plurality of teeth which extend into the spaces between the rings so as to remove matter clogging the sieve slots.
  • a further object of the invention is the provision of such a device in which the cutting teeth comb can be easily replaced in case of wear and without the use of special tools.
  • a comminutor including a sieve drum formed of a plurality of axially spaced-apart rings connected together by circumferentially distributed axially extending connectors joining the rings and in which cutter units are arranged in grooves formed in the drum periphery in the region of the axial connectors.
  • Each cutter is formed of a series of aligned, fitted pieces, whose outwardly directed faces are flush and lie in a common plane which itself is radially inward of the outermost periphery of the drum, except that at least one piece of each cutter unit has a tooth which extends radially beyond the outermost periphery of the drum.
  • a comb unit is fixed with respect to the rotating drum and has a plurality of teeth which extend into the spaces between the rings and has cutting edges which, during rotation of the drum, coact with the cutting edges of the said cutter unit to thereby comminute solid particles.
  • FIG. I is a side view of a comminutor according to the present invention, the comminutor portions being shown along a diametral section taken on the line 1-1 of FIG. 2.
  • a comminutor 1 includes a rotating sieve drum 2 and a comb device 3.
  • the sieve drum 2 is a cast body formed of individual rings 4 which are uniformly spaced from each other in an axial direction.
  • the rings 4 are connected by supporting members 5 which extend parallel to the drum axis.
  • the drum 2 is formed with recesses 6 which extend radially into the body of the drum.
  • pieces 7 and 7' of two distinct types form a cutting unit 8.
  • Cutting unit 8 extends along the entire axial length of the drum.
  • the pieces 7 and 7' are generally similar except that pieces 7 have teeth 9 which extend radially beyond the drum periphery.
  • Each piece 7 has a cutting face 7a which is so formed that all cutting faces 7a together of a single cutting unit 8 form a common cutting surface which occupies a plane which is flush and is radially inward of the outermost periphery of the drum.
  • the two opposite edges of these faces 7a form cutting edges.
  • the pieces have end surfaces which engage and support each other when they are fastened together to form a cutting unit 8.
  • the comb unit 3 includes a comb support 10 which is part of a housing 11 within which the sieve drum is mounted for rotation.
  • a comb unit 12 is mounted on comb support 10.
  • the comb unit 12 is formed ofa plurality of individual comb pieces which are axially aligned in a row and are similar to the pieces 7,7 forming the drum cutter unit 8.
  • Teeth M and 16 extend from opposite sides of the comb unit. As illustrated in the drawings teeth 16 are positioned to coact with the teeth 9 of the drum cutter unit 8. Teeth 16 have cutting edges 16a and 1612 on their opposite sides. Cutting edges 16a are illustrated as cooperating with teeth 9 in FIG. 2.
  • the comb unit 12 can be reversed so as to bring the cutting edge 1612 into cooperation with the teeth 9.
  • the unit can be rotated to bring the teeth 14 into cooperation with the teeth 9 and each of the cutting edges on opposite sides of teeth 14 can be successively used. In this way the cutting unit can be used four times before it needs to be replaced.
  • the individual pieces forming the cutting unit 12 are so dimensioned that the height ofone piece corresponds to an integral number ofthe height ofcutting pieces 7 and 7.
  • sewage containing floating matter and solid wastes enters the housing ll through opening 13 which is located radially outward from the drum circumference.
  • the fluid flows through the slots between the individual rings 4 and leaves the housing through an opening which is positioned axially through the drum.
  • the sides of the comb teeth 16 continuously reach between the sides of the rings 4.
  • the perpendicular cutting edges ofthe teeth 16 work, when in appropriate position of the sieve drum 2, against the free cutting edges of the faces 7a of the modules 7 and 7'. As previously mentioned, these faces are located radially inward of the drum periphery. Accordingly, any pieces clogging the sieve slots are continuously stripped from the sides of the comb teeth by the cooperation with the sides of the rings 4.
  • This comminution process is augmented by the interaction of the radially extending cutting edges of the comb teeth 16 with the cutting edge of the teeth 9.
  • the rings 4 have a cross section which is smaller in regions which are radially closer to the axis ofthe sieve drum.
  • each cutting unit 8 can be formed by alternating pieces 7 and 7'.
  • circumferentially adjacent cutting units 8 will be positioned so that the teeth 9 are offset from one another in the manner illustrated in FIG. 3 which shows the circumference of the drum as it would appear ifit were unrolled so as to occupy a single plane. Since the teeth 9 and 16 comminute pieces which have too firm a consistency to be comminuted by the engagement of the teeth between the individual drum rings 4, greater stresses can be expected to be created under these conditions;
  • a particular advantage of the present invention is that worn teeth 9 may be individually exchanged from the outside. This creates extremely favorable operating and maintenance conditions, particularly in view of the fact that the comb units 12 have four successively usable cutting edges.
  • the individual cutting pieces 7 and 7' of the drum cutter 8 support one another and have aligned frontal faces when assembled which form a closed cutting unit having two cutting edges. Moreover, the interaction of the sides of the comb teeth with the sides of the individual drum rings 4 continuously keeps the sieve drum slots free of clogging by solid pieces which might otherwise impede liquid flow.
  • a further advantage resides in the uniform stress on the sieve drum during the comminution process which results from the ability to vary the position of the cutting teeth.
  • the drum cutter unit has two cutting edges which are perpendicular to each other and which engage with corresponding perpendicularly positioned cutting edges of the comb teeth.
  • the sieve ring sides are always overlapped by the sides of the comb teeth so that even the thinnest pieces will be continuously stripped off.
  • a comminutor for solid materials carried by a flowing liquid comprising, in combination:
  • said unit including 1. a gridlike drum composed of axially spaced-apart rings and circumferentially distributed, axially extending connectors joining said rings, said drum having, in the regions of said axial connectors, axially extending grooves, and a plurality of cutters arranged in the respective grooves, each cutter being composed of a series of aligned, fitted pieces whose outwardly directed faces are flush and lie in a common plane which itself is radially inward of the outermost periphery of said drum, said pieces having axially extending cutting edges which are exposed in the spaces between said rings, and at least one piece of each cutter having a tooth which extends radially beyond the outermost periphery of said drum; and
  • a comb unit mounted on said support means and having a plurality of teeth which extend into the spaces between said rings and having cutting edges which, during rotation of said drum, coact with said cutting edges ofsaid pieces.
  • each cutter is composed of two types of pieces, each piece ofone type having an integral cutting tooth formed thereon.
  • each of said drum cutter pieces has end surfaces which engage and support each other when said pieces are fastened together to form a cutter unit.
  • said comb unit includes a piece having teeth extending therefrom in two different directions, and means for mounting said piece on the support in either of two positions, in one ofwhich the teeth extending in one direction coact with said drum cutters, and in the other of which the comb teeth extending in the other direction coact with said drum cutters.
  • said comb unit includes a plurality of individual pieces, and means for securing said pieces together in a direction extending along the length of the comb unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Crushing And Grinding (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
US877631A 1969-03-21 1969-11-18 Comminutor for solids carried in flowing liquids Expired - Lifetime US3584743A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1914413A DE1914413C3 (de) 1969-03-21 1969-03-21 Grobstoffzerkleinerer

Publications (1)

Publication Number Publication Date
US3584743A true US3584743A (en) 1971-06-15

Family

ID=5728865

Family Applications (1)

Application Number Title Priority Date Filing Date
US877631A Expired - Lifetime US3584743A (en) 1969-03-21 1969-11-18 Comminutor for solids carried in flowing liquids

Country Status (5)

Country Link
US (1) US3584743A (de)
CH (1) CH487807A (de)
DE (1) DE1914413C3 (de)
FR (1) FR2030855A5 (de)
GB (1) GB1249844A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752319A (en) * 1970-09-24 1973-08-14 Kamyr Ab Strainer device in a continuous cellulose digesting plant
US3893923A (en) * 1973-02-05 1975-07-08 Stanley P Rudzinski Screening and comminuting device
EP1743702A1 (de) * 2005-07-14 2007-01-17 Ecor S.r.l. Zerkleinerungsvorrichtung für Behandlung von Feststoffen
US20200246802A1 (en) * 2016-01-27 2020-08-06 Size Reduction Specialists Corp. Plastic granulator stationary cutting segment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK0928222T4 (da) † 1995-09-12 2007-06-11 M & J Ind As Findelingsmaskine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1948125A (en) * 1932-04-11 1934-02-20 Carl H Nordell Screen
US1999149A (en) * 1935-04-23 Screen
US2267088A (en) * 1937-07-26 1941-12-23 Chicago Pump Co Comminutor
US2336069A (en) * 1943-01-23 1943-12-07 Chicago Pump Co Through-flow comminutor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1999149A (en) * 1935-04-23 Screen
US1948125A (en) * 1932-04-11 1934-02-20 Carl H Nordell Screen
US2267088A (en) * 1937-07-26 1941-12-23 Chicago Pump Co Comminutor
US2336069A (en) * 1943-01-23 1943-12-07 Chicago Pump Co Through-flow comminutor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752319A (en) * 1970-09-24 1973-08-14 Kamyr Ab Strainer device in a continuous cellulose digesting plant
US3893923A (en) * 1973-02-05 1975-07-08 Stanley P Rudzinski Screening and comminuting device
EP1743702A1 (de) * 2005-07-14 2007-01-17 Ecor S.r.l. Zerkleinerungsvorrichtung für Behandlung von Feststoffen
US20200246802A1 (en) * 2016-01-27 2020-08-06 Size Reduction Specialists Corp. Plastic granulator stationary cutting segment
US11628447B2 (en) * 2016-01-27 2023-04-18 Size Reduction Specialists Corp. Plastic granulator stationary cutting segment

Also Published As

Publication number Publication date
GB1249844A (en) 1971-10-13
DE1914413B2 (de) 1973-06-20
FR2030855A5 (de) 1970-11-13
DE1914413A1 (de) 1970-10-15
CH487807A (de) 1970-03-31
DE1914413C3 (de) 1974-01-24

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