GB1574027A - Shreding apparatus for waste - Google Patents

Shreding apparatus for waste Download PDF

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Publication number
GB1574027A
GB1574027A GB1366/77A GB1366977A GB1574027A GB 1574027 A GB1574027 A GB 1574027A GB 1366/77 A GB1366/77 A GB 1366/77A GB 1366977 A GB1366977 A GB 1366977A GB 1574027 A GB1574027 A GB 1574027A
Authority
GB
United Kingdom
Prior art keywords
pulleys
knife
cutting edges
knife cylinders
shredding apparatus
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
Application number
GB1366/77A
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.)
Kampschulte & Co J
Original Assignee
Kampschulte & Co J
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 Kampschulte & Co J filed Critical Kampschulte & Co J
Publication of GB1574027A publication Critical patent/GB1574027A/en
Expired 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
    • 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
    • B02C18/182—Disc-shaped knives
    • 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
    • B02C18/22—Feed or discharge means
    • B02C18/2225—Feed means
    • B02C18/2241—Feed means of conveyor belt type

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Crushing And Pulverization Processes (AREA)

Description

(54) SHREDDING APPARATUS FOR WASTE (71) We, OSNABRUCKER METALL WERKE J. KAMPSCHULTE & CO., of Postfach 3449, Hannoversche Strasse 95, 4500 Osnabruck, Federal Republic of Germany, a German Kommanditgesellschaft, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement::- This invention relates to shredding apparatus for waste such as paper and old tyres, and in particular to apparatus having two knife cylinders which counter-rotate during operation and on which the knives are arranged at distances from each other so that one knife of one cylinder engages between knives of the oppositely disposed cylinder, the knives comprising individual discs each having cutting edges on their circumference, the cutting edges being serrated and the cutting edges of adjacent discs being mounted in relative offset configuration.
In such a shredding apparatus the cutting edges on the knife disc are of identical size and are distributed at identical distances over the circumference of the discs.
The material to be shredded is gripped by the knife edges and torn apart. The throughput of such apparatus depends to a large extent on the number and size of the knife cutting edges. The larger the cutting edges, the more material will be gripped and can be shredded. On the other hand, an increasing cutting volume also results in an enormous increase in the required transmission power so that the choice of excessively large and of too many cutting edges may result in the transmission power being insufficient, with the result that the driving speed is reduced.
The present invention provides shredding apparatus for waste, comprising two knife cylinders which counter-rotate during operation and on which the knives are arranged at distances from each other so that one knife of the one cylinder engages between knives of the oppositely disposed cylinder, the knives comprising individual discs each having cutting edges on their circumference, the cutting edges being serrated and the cutting edges of adjacent discs being mounted in relative offset configuration, wherein the said cutting edges are of different size, and situated at identical distances from each other on each disc, and further comprising a feeding means comprising two rotatable elements with drivers, the distance between the said elements diminshing towards the said knife cylinders.
Thus to avoid the risk of reducing the driving speed but nevertheless to increase the throughput rate of the apparatus, the present invention provides that cutting edges of different size are disposed at identical distances from each other on each disc. The cutting edges therefore grip quantities of different magnitude. If severe overloading occurs with a large cutting edge and a large cutting volume, the transmission speed will be reduced. The succeeding smaller pair of cutting edges will then grip substantially less material. The driving mechanism can thus recover so that the full driving power is again available when further waste is gripped by the larger pair of cutting edges.
Larger and smaller cutting edges are preferably arranged alternately on each knife disc. The alternating arrangement of large and small cutting edges is sufficient to achieve the above-described effect.
Spacer discs and strippers may be disposed between the knife discs, the strippers bearing the spacer discs over a substantial part thereof. This contact provides additional support for the knife cylinders, thus avoiding flexure at the above-described loadings.
To prevent the shredded material being retained on the strippers, each of the active surfaces of the strippers may be provided with a relief. This avoids blockages.
Reliable supply of feedstock to the knife cylinders is ensured by feeding means which comprises two rotatable elements with drivers, the distance between the elements diminishing towards the knife cylinders.
The material for shredding is first gripped by the drivers and conveyed towards the knife cylinders. The diminishing distance causes increasing compression of material which is thus forcibly supplied to the knife cylinders and is shredded thereby. Even large hollow members are previously deformed and are compressed by the drivers while being conveyed to the cutting edges and are reliably retained.
Each of the rotatable elements preferably comprises an endless belt.
The reduction of the distance between the rotatable elements may be achieved in a simple manner by reversing pulleys, oriented towards the knife cylinders, having a diameter which is larger than that of oppositely disposed pulleys.
The pulleys which are oriented closer to the knife cylinders may be arranged to deflect against spring pressure. The springs provide a safety element in the case of large amounts of material infeed and for objects which cannot be substantially compressed so that the pulleys can deflect in such a case.
Compression and conveying of the material to the knife cylinders results in high compression forces. The endless belts may comprise plate belts so as to provide stress-resistant conveying devices. The plates in this case are constucted of very thick steel plates.
The invention will be further described, by way of example only, with reference to the accompanying drawing, which is a side view of a shredding apparatus according to the invention.
The shredding apparatus 1 shown in the drawing comprises two rapidly counterrotating knife cylinders 2,2' each having knives 3,3' which in turn are provided in an alternating configuration with large cutting edges 4,4' and small cutting edges 5,5'.
Spacer discs 6,6' are situated between the individual knives 3,3'. Part of the circumference of the spacer discs 6,6' bear on strippers 7,7' which are provided with reliefs 8,8' to ensure improved drop-out of the shredded material.
The shredded material is supplied in the direction of the arrow 9. Two feeding devices 10,10' comprising endless belts 11,11' supply the material to the knife cylinders 2,2'. The belts 11,11' are driven by pulleys 12,12', the distance between the reversing pulleys 13,13' being substantially narrower than between the pulleys 12,12'. The pulleys 13,13' are able to deflect against the force exerted by springs 14,14'.
The material to be shredded passes between the belts 11,11' and is gripped by driverS 15. The diminishing distance between the belts 11,11' causes the material to be compressed and to be forcibly supplied to the knife cylinders 2,2' to be shredded thereby. Even hollow members can no longer rotate as soon as they are gripped by the drivers 15 and are also compressed and conveyed.
WHAT WE CLAIM IS: 1. Shredding apparatus for waste, comprising two knife cylinders which counterrotate during operation and on which the knives are arranged at distances from each other so that one knife of one cylinder engages between knives of the oppositely disposed cylinder, the knives comprising individual discs each having cutting edges on their circumference, the cutting edges being serrated and the cutting edges of adjacent discs being mounted in relative offset configuration, wherein the said cutting edges are of different size and situated at identical distances from each other on each disc, and further comprising a feeding means comprising two rotatable elements with drivers, the distance between the said elements diminishing towards the said knife cylinders.
2. Shredding apparatus as claimed in Claim 1, wherein larger and smaller cutting edges are arranged in an alternating configuration on each knife disc.
3. Shredding apparatus as claimed in Claim 1 or 2, wherein spacer discs and strippers are disposed between the knife discs, and wherein the strippers bear on the spacer discs over a substantial part thereof.
4. Shredding apparatus as claimed in Claim 3, wherein each of the active surfaces of the strippers are provided with a relief.
5. Shredding apparatus as claimed in any of Claims 1 to 4, wherein each of the rotatable elements comprises an endless belt.
6. Shredding apparatus as claimed in Claim 5, wherein reversing pulleys oriented closer to the knife cylinders have a diameter which is larger than that of oppositely disposed pulleys.
7. Shredding apparatus as claimed in Claim 5 or 6, wherein the pulleys oriented closer towards the knife cylinders are arranged to deflect against spring pressure.
8. Shredding apparatus as claimed in any of Claims 5 to 7, wherein the endless belts comprise plate belts.
9. Shredding apparatus substantially as herein described with reference to, and as shown in, the accompanving drawing.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (9)

**WARNING** start of CLMS field may overlap end of DESC **. retained on the strippers, each of the active surfaces of the strippers may be provided with a relief. This avoids blockages. Reliable supply of feedstock to the knife cylinders is ensured by feeding means which comprises two rotatable elements with drivers, the distance between the elements diminishing towards the knife cylinders. The material for shredding is first gripped by the drivers and conveyed towards the knife cylinders. The diminishing distance causes increasing compression of material which is thus forcibly supplied to the knife cylinders and is shredded thereby. Even large hollow members are previously deformed and are compressed by the drivers while being conveyed to the cutting edges and are reliably retained. Each of the rotatable elements preferably comprises an endless belt. The reduction of the distance between the rotatable elements may be achieved in a simple manner by reversing pulleys, oriented towards the knife cylinders, having a diameter which is larger than that of oppositely disposed pulleys. The pulleys which are oriented closer to the knife cylinders may be arranged to deflect against spring pressure. The springs provide a safety element in the case of large amounts of material infeed and for objects which cannot be substantially compressed so that the pulleys can deflect in such a case. Compression and conveying of the material to the knife cylinders results in high compression forces. The endless belts may comprise plate belts so as to provide stress-resistant conveying devices. The plates in this case are constucted of very thick steel plates. The invention will be further described, by way of example only, with reference to the accompanying drawing, which is a side view of a shredding apparatus according to the invention. The shredding apparatus 1 shown in the drawing comprises two rapidly counterrotating knife cylinders 2,2' each having knives 3,3' which in turn are provided in an alternating configuration with large cutting edges 4,4' and small cutting edges 5,5'. Spacer discs 6,6' are situated between the individual knives 3,3'. Part of the circumference of the spacer discs 6,6' bear on strippers 7,7' which are provided with reliefs 8,8' to ensure improved drop-out of the shredded material. The shredded material is supplied in the direction of the arrow 9. Two feeding devices 10,10' comprising endless belts 11,11' supply the material to the knife cylinders 2,2'. The belts 11,11' are driven by pulleys 12,12', the distance between the reversing pulleys 13,13' being substantially narrower than between the pulleys 12,12'. The pulleys 13,13' are able to deflect against the force exerted by springs 14,14'. The material to be shredded passes between the belts 11,11' and is gripped by driverS 15. The diminishing distance between the belts 11,11' causes the material to be compressed and to be forcibly supplied to the knife cylinders 2,2' to be shredded thereby. Even hollow members can no longer rotate as soon as they are gripped by the drivers 15 and are also compressed and conveyed. WHAT WE CLAIM IS:
1. Shredding apparatus for waste, comprising two knife cylinders which counterrotate during operation and on which the knives are arranged at distances from each other so that one knife of one cylinder engages between knives of the oppositely disposed cylinder, the knives comprising individual discs each having cutting edges on their circumference, the cutting edges being serrated and the cutting edges of adjacent discs being mounted in relative offset configuration, wherein the said cutting edges are of different size and situated at identical distances from each other on each disc, and further comprising a feeding means comprising two rotatable elements with drivers, the distance between the said elements diminishing towards the said knife cylinders.
2. Shredding apparatus as claimed in Claim 1, wherein larger and smaller cutting edges are arranged in an alternating configuration on each knife disc.
3. Shredding apparatus as claimed in Claim 1 or 2, wherein spacer discs and strippers are disposed between the knife discs, and wherein the strippers bear on the spacer discs over a substantial part thereof.
4. Shredding apparatus as claimed in Claim 3, wherein each of the active surfaces of the strippers are provided with a relief.
5. Shredding apparatus as claimed in any of Claims 1 to 4, wherein each of the rotatable elements comprises an endless belt.
6. Shredding apparatus as claimed in Claim 5, wherein reversing pulleys oriented closer to the knife cylinders have a diameter which is larger than that of oppositely disposed pulleys.
7. Shredding apparatus as claimed in Claim 5 or 6, wherein the pulleys oriented closer towards the knife cylinders are arranged to deflect against spring pressure.
8. Shredding apparatus as claimed in any of Claims 5 to 7, wherein the endless belts comprise plate belts.
9. Shredding apparatus substantially as herein described with reference to, and as shown in, the accompanving drawing.
GB1366/77A 1976-04-09 1977-03-31 Shreding apparatus for waste Expired GB1574027A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE7611103U DE7611103U1 (en) 1976-04-09 1976-04-09 SHREDDING DEVICE FOR WASTE, SUCH AS PAPER, WASTE TIRES ETC.

Publications (1)

Publication Number Publication Date
GB1574027A true GB1574027A (en) 1980-09-03

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ID=6664122

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1366/77A Expired GB1574027A (en) 1976-04-09 1977-03-31 Shreding apparatus for waste

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DE (1) DE7611103U1 (en)
GB (1) GB1574027A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140869A2 (en) * 1983-08-01 1985-05-08 FALKNER, Raimund Waste comminuting apparatus
GB2201611A (en) * 1987-03-04 1988-09-07 Schleicher Co Feinwerktech Cutting mechanism for devices for comminuting material
US5295633A (en) * 1992-01-13 1994-03-22 Fellowes Manufacturing Company Document shredding machine with stripper and cutting mechanism therefore
DE3745058C2 (en) * 1987-01-26 1995-05-24 Werner Buerklin Organic refuse disintegrator
WO2006071281A1 (en) * 2004-12-28 2006-07-06 Owens Corning Intellectual Capital, Llc. Machine for distributing loosefill insulation material
US7712690B2 (en) 2006-10-16 2010-05-11 Owens Corning Intellectual Capital, Llc Exit valve for blowing insulation machine
US7731115B2 (en) 2006-10-16 2010-06-08 Owens Corning Intellectual Capital, Llc Agitation system for blowing insulation machine
US7762484B2 (en) 2008-04-14 2010-07-27 Owens Corning Intellectual Capital, Llc Blowing wool machine flow control
US7819349B2 (en) 2006-10-16 2010-10-26 Owens Corning Intellectual Capital, Llc Entrance chute for blowing insulation machine
US7845585B2 (en) 2006-10-16 2010-12-07 Owens Corning Intellectual Capital, Llc Blowing wool machine outlet plate assembly
US7882947B2 (en) 2006-10-16 2011-02-08 Owens Corning Intellectual Capital, Llc Partially cut loosefill package
US7886904B1 (en) 2009-07-30 2011-02-15 Owens Corning Intellectual Capital, Llc Loosefill package for blowing wool machine
US7913842B2 (en) 2006-10-16 2011-03-29 Owens Corning Intellectual Capital, Llc Loosefill package for blowing wool machine
US7938348B2 (en) 2004-07-27 2011-05-10 Owens Corning Intellectual Capital, Llc Loosefill blowing machine with a chute
US7971814B2 (en) 2008-12-17 2011-07-05 Owens Corning Intellectual Capital, Llc Non-symmetrical airlock for blowing wool machine
US7971813B2 (en) 2004-07-27 2011-07-05 Owens Corning Intellectual Capital, Llc Blowing machine for loosefill insulation material
US9457355B2 (en) 2011-09-16 2016-10-04 Omachron Intellectual Property Inc. Apparatus for converting bales of insulation to loose fill

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107617486A (en) * 2017-09-27 2018-01-23 芜湖凯奥尔环保科技有限公司 A kind of string shredding machine

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140869A2 (en) * 1983-08-01 1985-05-08 FALKNER, Raimund Waste comminuting apparatus
EP0140869A3 (en) * 1983-08-01 1986-02-05 Raimund Falkner Waste comminuting apparatus
DE3745058C2 (en) * 1987-01-26 1995-05-24 Werner Buerklin Organic refuse disintegrator
GB2201611A (en) * 1987-03-04 1988-09-07 Schleicher Co Feinwerktech Cutting mechanism for devices for comminuting material
GB2201611B (en) * 1987-03-04 1991-07-10 Schleicher Co Feinwerktech Cutting mechanism for devices for comminuting material
US5295633A (en) * 1992-01-13 1994-03-22 Fellowes Manufacturing Company Document shredding machine with stripper and cutting mechanism therefore
US9272287B2 (en) 2004-07-27 2016-03-01 Owens Corning Intellectual Capital Llc Blowing wool bag and method of using the bag
US7971813B2 (en) 2004-07-27 2011-07-05 Owens Corning Intellectual Capital, Llc Blowing machine for loosefill insulation material
US7938348B2 (en) 2004-07-27 2011-05-10 Owens Corning Intellectual Capital, Llc Loosefill blowing machine with a chute
WO2006071281A1 (en) * 2004-12-28 2006-07-06 Owens Corning Intellectual Capital, Llc. Machine for distributing loosefill insulation material
US7882947B2 (en) 2006-10-16 2011-02-08 Owens Corning Intellectual Capital, Llc Partially cut loosefill package
US7731115B2 (en) 2006-10-16 2010-06-08 Owens Corning Intellectual Capital, Llc Agitation system for blowing insulation machine
US7819349B2 (en) 2006-10-16 2010-10-26 Owens Corning Intellectual Capital, Llc Entrance chute for blowing insulation machine
US7712690B2 (en) 2006-10-16 2010-05-11 Owens Corning Intellectual Capital, Llc Exit valve for blowing insulation machine
US7913842B2 (en) 2006-10-16 2011-03-29 Owens Corning Intellectual Capital, Llc Loosefill package for blowing wool machine
US9004382B2 (en) 2006-10-16 2015-04-14 Owens Corning Intellectual Capital, Llc Agitation system for blowing wool machine
US8245960B2 (en) 2006-10-16 2012-08-21 Owens Corning Intellectual Capital, Llc Agitation system for blowing wool machine
US7845585B2 (en) 2006-10-16 2010-12-07 Owens Corning Intellectual Capital, Llc Blowing wool machine outlet plate assembly
US7980498B2 (en) 2006-10-16 2011-07-19 Owens-Corning Fiberglas Technology, Inc. Entrance chute for blowing wool machine
US8087601B2 (en) 2006-10-16 2012-01-03 Owens Corning Intellectual Capital, Llc Agitation system for blowing wool machine
US7762484B2 (en) 2008-04-14 2010-07-27 Owens Corning Intellectual Capital, Llc Blowing wool machine flow control
US7971814B2 (en) 2008-12-17 2011-07-05 Owens Corning Intellectual Capital, Llc Non-symmetrical airlock for blowing wool machine
US7886904B1 (en) 2009-07-30 2011-02-15 Owens Corning Intellectual Capital, Llc Loosefill package for blowing wool machine
US9457355B2 (en) 2011-09-16 2016-10-04 Omachron Intellectual Property Inc. Apparatus for converting bales of insulation to loose fill

Also Published As

Publication number Publication date
DE7611103U1 (en) 1976-11-11

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PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee