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GB2124963A - Adjustable pelletising roller - Google Patents

Adjustable pelletising roller Download PDF

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Publication number
GB2124963A
GB2124963A GB08215871A GB8215871A GB2124963A GB 2124963 A GB2124963 A GB 2124963A GB 08215871 A GB08215871 A GB 08215871A GB 8215871 A GB8215871 A GB 8215871A GB 2124963 A GB2124963 A GB 2124963A
Authority
GB
United Kingdom
Prior art keywords
pressure wheel
dies
housing
bearing
shims
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.)
Granted
Application number
GB08215871A
Other versions
GB2124963B (en
Inventor
C F North
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.)
BOOTHAM NORTH ENGINEERING LIMI
Original Assignee
BOOTHAM NORTH ENGINEERING LIMI
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 BOOTHAM NORTH ENGINEERING LIMI filed Critical BOOTHAM NORTH ENGINEERING LIMI
Priority to GB08215871A priority Critical patent/GB2124963B/en
Publication of GB2124963A publication Critical patent/GB2124963A/en
Application granted granted Critical
Publication of GB2124963B publication Critical patent/GB2124963B/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/20—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
    • B30B11/201—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring for extruding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/20—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
    • B30B11/201—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring for extruding material
    • B30B11/205—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring for extruding material using an annular series of radial die cells, especially for crop material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

A pelletising apparatus comprises a set of circumferentially mounted dies 12 and a corresponding eccentrically mounted pressure wheel 14. The pressure wheel 14 is mounted on a shaft 16 extending to the exterior of the apparatus where it is supported in a bearing 22, the bearing housing 24 being adjustable by means of shims (28) in relation to the main body 10 of the apparatus whereby to effect corresponding adjustments of the pressure wheel 14. <IMAGE>

Description

SPECIFICATION Pelletising apparatus This invention relates to an improvement in pelletising apparatus.
Pelletising apparatus is available for the production of compact pellets of relatively high density from a variety of material such as straw, domestic refuse wood waste, waste paper and cardboard, peat, coal dust, and the like. Such pellets, apart from being considerably easier to handle than the raw waste products, are often industrially useful as well in that they have a much higher calorific value per unit volume and may be used as a fuel. One currently available form of such apparatus is known as a 'Papakube' and comprises a set of circumferentially set dies and an eccentrically mounted pressure wheel which, as it rotates, traps, compresses and shears waste material between itself and each of the dies in succession.Because of its mode of operation there is naturally considerable wear on both dies and the pressure wheel, with the latter bearing the greater proportion. Accordingiy the pressure wheel wears away and has periodically to be reset to prevent the critical gap between the pressure wheel and the dies becoming too great. This operation is time consuming in that the machine has to be virtually completely dismantled, the pressure wheel reset with a number of shims, inserted on a trial and error basis, the machine reassembled, and the gap then measured. If the gap is still incorrect the process must be repeated until the right combination of shims is found.
The invention seeks to provide an improved form of pelletising apparatus in which adjustments for wear may be carried out much more simply and accurately.
According to the present invention there is provided a pelletising apparatus comprising a set of circumferentially mounted dies and a corresponding eccentrically mounted pressure wheel in which the pressure wheel is mounted on a shaft extending to the exterior of the apparatus where it is supported in a bearing, the bearing housing being adjustable in relation to the apparatus whereby to effect corresponding adjustments of the pressure wheel.
By this means, accurate adjustment of the pressure wheel can be carried out simply and easily merely by unbolting the externally mounted bearing house and inserting shims of the required thickness between the bearing housing and the apparatus main body which will produce an exactly corresponding adjustment of the pressure wheel thus eliminating the extensive dismantling and the trial and error of the previous system.
The invention will be described further, by way of example, with reference to the accompanying drawing, the sole figure of which is an axially sectional view of an apparatus constructed in accordance with the invention.
Referring to the drawing, a pelletising apparatus comprises a main body portion 10 at one end of which, mounted circumferentially about the body 10 are a series of dies 12. A pressure wheel 14 is mounted on an eccentric shaft 16 connected to and rotating about a main shaft 18 centrally of the housing 10. The main shaft 18 is mounted in a floating bearing 20 at one end of the housing 10 and a fixed bearing 22 at the other end. The bearing 22 is itself mounted within a bearing housing 24 fixed to the main housing 10 by means of bolts 26 replaceable shims 28 enable the spacing between the bearing housing 24 and the main housing 10, and therefore the relationship of the shaft 18 with the housing 10, to be altered in an accurately known manner. The dies 12 are secured to the housing 10 by means of bolts 30.A duct 32 formed between each set of dies 12 communicates with an annular pellet collecting duct 34.
In operation, the shaft 18 is driven from its end 36 externally of the housing 10 through a suitable clutch, hydraulic coupling and/or gear train arrangements (not shown) thereby causing the pressure wheel 14 to rotate eccentrically on its shaft 16 and coming in to register with each set of dies in turn.
Material to be peiletised is fed into the housing 10 where it is trapped, compressed and sheared by the combined action of the pressure wheel 14 and the dies 12. The material passed through the ducts 12 within which it is pelletised as more fully described in the following patents.
Densified pellets emerge from the duct 32 into the collecting duct 34 through which they pass to a collection point.
With the apparatus constructed in accordance with the invention, when wear on the pressure wheel 14, in particular the edge in contact with the dies 12, requires adjustment of the pressure wheel in relationship to the dies 12, all that is necessary is to measure how much the gap between the pressure wheel is greater than the optimum working gap, loosen the bolts 26 on the bearing housing 24 and insert shims to that value between the bearing housing 24 and the main housing 10. This simple operation then restores the gap between the pressure wheel 14 and the dies 12 to the correct working value. No dismantling of the main housing 10 is necessary nor is any trial and error since the correct value of the shims can be determined by direct measurement.
In addition, the construction in accordance with the invention allows full access to all the dies 12 merely by removing the bolts 30 holding the dies and their associated inspection covers in place on the housing 10.
The floating bearing 20 may incorporate an improved lubrication system for example central lubrication to the pressure wheel through the main shaft 18 activated by a rotating grease assembly which can be actuated automatically if required.
In contrast to earlier devices no gear trains are contained within the housing 10 all drive to the shaft 18 being applied externally through its drive end 36, thus enabling improved par efficiency of the apparatus to be obtained.
CLAIMS (Filed on 31 May 1983) 1. A pelletising apparatus comprising a set of
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Pelletising apparatus This invention relates to an improvement in pelletising apparatus. Pelletising apparatus is available for the production of compact pellets of relatively high density from a variety of material such as straw, domestic refuse wood waste, waste paper and cardboard, peat, coal dust, and the like. Such pellets, apart from being considerably easier to handle than the raw waste products, are often industrially useful as well in that they have a much higher calorific value per unit volume and may be used as a fuel. One currently available form of such apparatus is known as a 'Papakube' and comprises a set of circumferentially set dies and an eccentrically mounted pressure wheel which, as it rotates, traps, compresses and shears waste material between itself and each of the dies in succession.Because of its mode of operation there is naturally considerable wear on both dies and the pressure wheel, with the latter bearing the greater proportion. Accordingiy the pressure wheel wears away and has periodically to be reset to prevent the critical gap between the pressure wheel and the dies becoming too great. This operation is time consuming in that the machine has to be virtually completely dismantled, the pressure wheel reset with a number of shims, inserted on a trial and error basis, the machine reassembled, and the gap then measured. If the gap is still incorrect the process must be repeated until the right combination of shims is found. The invention seeks to provide an improved form of pelletising apparatus in which adjustments for wear may be carried out much more simply and accurately. According to the present invention there is provided a pelletising apparatus comprising a set of circumferentially mounted dies and a corresponding eccentrically mounted pressure wheel in which the pressure wheel is mounted on a shaft extending to the exterior of the apparatus where it is supported in a bearing, the bearing housing being adjustable in relation to the apparatus whereby to effect corresponding adjustments of the pressure wheel. By this means, accurate adjustment of the pressure wheel can be carried out simply and easily merely by unbolting the externally mounted bearing house and inserting shims of the required thickness between the bearing housing and the apparatus main body which will produce an exactly corresponding adjustment of the pressure wheel thus eliminating the extensive dismantling and the trial and error of the previous system. The invention will be described further, by way of example, with reference to the accompanying drawing, the sole figure of which is an axially sectional view of an apparatus constructed in accordance with the invention. Referring to the drawing, a pelletising apparatus comprises a main body portion 10 at one end of which, mounted circumferentially about the body 10 are a series of dies 12. A pressure wheel 14 is mounted on an eccentric shaft 16 connected to and rotating about a main shaft 18 centrally of the housing 10. The main shaft 18 is mounted in a floating bearing 20 at one end of the housing 10 and a fixed bearing 22 at the other end. The bearing 22 is itself mounted within a bearing housing 24 fixed to the main housing 10 by means of bolts 26 replaceable shims 28 enable the spacing between the bearing housing 24 and the main housing 10, and therefore the relationship of the shaft 18 with the housing 10, to be altered in an accurately known manner. The dies 12 are secured to the housing 10 by means of bolts 30.A duct 32 formed between each set of dies 12 communicates with an annular pellet collecting duct 34. In operation, the shaft 18 is driven from its end 36 externally of the housing 10 through a suitable clutch, hydraulic coupling and/or gear train arrangements (not shown) thereby causing the pressure wheel 14 to rotate eccentrically on its shaft 16 and coming in to register with each set of dies in turn. Material to be peiletised is fed into the housing 10 where it is trapped, compressed and sheared by the combined action of the pressure wheel 14 and the dies 12. The material passed through the ducts 12 within which it is pelletised as more fully described in the following patents. Densified pellets emerge from the duct 32 into the collecting duct 34 through which they pass to a collection point. With the apparatus constructed in accordance with the invention, when wear on the pressure wheel 14, in particular the edge in contact with the dies 12, requires adjustment of the pressure wheel in relationship to the dies 12, all that is necessary is to measure how much the gap between the pressure wheel is greater than the optimum working gap, loosen the bolts 26 on the bearing housing 24 and insert shims to that value between the bearing housing 24 and the main housing 10. This simple operation then restores the gap between the pressure wheel 14 and the dies 12 to the correct working value. No dismantling of the main housing 10 is necessary nor is any trial and error since the correct value of the shims can be determined by direct measurement. In addition, the construction in accordance with the invention allows full access to all the dies 12 merely by removing the bolts 30 holding the dies and their associated inspection covers in place on the housing 10. The floating bearing 20 may incorporate an improved lubrication system for example central lubrication to the pressure wheel through the main shaft 18 activated by a rotating grease assembly which can be actuated automatically if required. In contrast to earlier devices no gear trains are contained within the housing 10 all drive to the shaft 18 being applied externally through its drive end 36, thus enabling improved par efficiency of the apparatus to be obtained. CLAIMS (Filed on 31 May 1983)
1. A pelletising apparatus comprising a set of circumferentially mounted dies and a correspondingly eccentrically mounted pressure wheel in which the pressure wheel is mounted on a shaft extending to the exterior of the apparatus which is supported in a bearing, the bearing housing being adjustable in relation to the apparatus whereby to effect corresponding adjustments to the pressure wheel.
2. An apparatus according to claim 1 in which the bearing housing is adjusted by inserting shims of the required thickness between it and the main body of the apparatus.
3. An apparatus according to claim 2 in which the thickness of the shims is determined by measuring the gap between the pressure wheel and the dies.
4. An apparatus as claimed in any one of claims 1 to 3 in which the shaft extending to the exterior of the apparatus is driven through a clutch, hydraulic coupling and/or gear train.
5. An apparatus as claimed in any one of claims 1 to 4 in which access to the dies may be obtained by removing inspection covers.
6. An apparatus substantially as hereinbefore described with reference to and as illustrated in the accompanying drawing.
GB08215871A 1982-06-01 1982-06-01 Adjustable pelletising roller Expired GB2124963B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08215871A GB2124963B (en) 1982-06-01 1982-06-01 Adjustable pelletising roller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08215871A GB2124963B (en) 1982-06-01 1982-06-01 Adjustable pelletising roller

Publications (2)

Publication Number Publication Date
GB2124963A true GB2124963A (en) 1984-02-29
GB2124963B GB2124963B (en) 1985-12-24

Family

ID=10530754

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08215871A Expired GB2124963B (en) 1982-06-01 1982-06-01 Adjustable pelletising roller

Country Status (1)

Country Link
GB (1) GB2124963B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587008A (en) * 1983-11-15 1986-05-06 Shell Oil Company Process comprising reforming, synthesis, and hydrocracking
CN106493988A (en) * 2016-10-12 2017-03-15 上海鸿余环保科技有限公司 A kind of producing coal from straw complete set of equipments

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB447208A (en) * 1934-12-05 1936-05-14 Edgar Thomas Meakin Improvements in pellet forming or cubing machines
GB712006A (en) * 1952-06-16 1954-07-14 Express Lift Co Ltd Improvements in or relating to bearings
GB857133A (en) * 1959-01-22 1960-12-29 Paul Bonnafoux Rotary pellet mill
GB884005A (en) * 1960-01-11 1961-12-06 Paul Bonnafoux Pellet mill
GB935568A (en) * 1960-12-27 1963-08-28 Edgar Neal Meakin Floating die type pellet mill
GB941188A (en) * 1960-05-25 1963-11-06 Eric Southam Apparatus for pelleting or cubing granular, powdered or like material
GB975474A (en) * 1962-10-06 1964-11-18 Eric Southam Machine for compressing granular or fibrous material into cubes or pellets of various sizes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB447208A (en) * 1934-12-05 1936-05-14 Edgar Thomas Meakin Improvements in pellet forming or cubing machines
GB712006A (en) * 1952-06-16 1954-07-14 Express Lift Co Ltd Improvements in or relating to bearings
GB857133A (en) * 1959-01-22 1960-12-29 Paul Bonnafoux Rotary pellet mill
GB884005A (en) * 1960-01-11 1961-12-06 Paul Bonnafoux Pellet mill
GB941188A (en) * 1960-05-25 1963-11-06 Eric Southam Apparatus for pelleting or cubing granular, powdered or like material
GB935568A (en) * 1960-12-27 1963-08-28 Edgar Neal Meakin Floating die type pellet mill
GB975474A (en) * 1962-10-06 1964-11-18 Eric Southam Machine for compressing granular or fibrous material into cubes or pellets of various sizes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587008A (en) * 1983-11-15 1986-05-06 Shell Oil Company Process comprising reforming, synthesis, and hydrocracking
US4628133A (en) * 1983-11-15 1986-12-09 Shell Oil Company Process for the preparation of hydrocarbons from a mixture of CO and H.sub.2
CN106493988A (en) * 2016-10-12 2017-03-15 上海鸿余环保科技有限公司 A kind of producing coal from straw complete set of equipments
CN106493988B (en) * 2016-10-12 2017-12-22 上海鸿余环保科技有限公司 A kind of producing coal from straw complete set of equipments

Also Published As

Publication number Publication date
GB2124963B (en) 1985-12-24

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PCNP Patent ceased through non-payment of renewal fee