US3788480A - Securing device for a removable bag for a centrifuge - Google Patents

Securing device for a removable bag for a centrifuge Download PDF

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Publication number
US3788480A
US3788480A US00175551A US3788480DA US3788480A US 3788480 A US3788480 A US 3788480A US 00175551 A US00175551 A US 00175551A US 3788480D A US3788480D A US 3788480DA US 3788480 A US3788480 A US 3788480A
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United States
Prior art keywords
bag
lifting assembly
basket
central
cruciform member
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Expired - Lifetime
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US00175551A
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English (en)
Inventor
J Rousselet
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Rousselet SARL
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Rousselet SARL
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Publication date
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/04—Periodical feeding or discharging; Control arrangements therefor

Definitions

  • ABSTRACT A securing device for a removable bag for a centrifuge having a vertical axis for its basket provided with a central cone, the bag comprising an outer cylindrical part to fit the outside wall of the basket, an intermediate part to fit the bottom of the basket, and a truncated conical part to fit the central cone and provided with a central opening.
  • the securing device is constituted by a circular skirt to fit inside the perimeter of the basket, the skirt being connected to the upper edge of the cylindrical part of the bag, a crown to which the skirt is fixed, and a cruciform member connected to the edge of the central opening of the bag.
  • a lifting assembly adapted to be suspended from a hoist can be detachably connected to the crown, the lifting assembly also being detachably engageable with the cruciform member.
  • the device may either be supported on feet at a discharge station, with a central sliding rod of the lifting assembly then permitting the central opening of the bag to fall. or a manually operated lever may be provided on the lifting assembly to effect release of the central opening to permit it to fall.
  • FIGS f l SECURING DEVICE FOR A REMOVABLE BAG FOR A CENTRIFUGE This invention relates to a securing device for a removable bag for a centrifuge.
  • a bag For filtering and emptying by downward discharge the sediments that collect in a centrifuge, there is often used a bag consisting of a cylindrical outer part, an intermediate part, and a truncated conical part fitting itself to the wall of the central cone of the centrifuge and provided with a central opening.
  • the assembly used to secure the central truncated conical part, in a manner enabling the latter to be detached for emptying, necessitates manual operations that are particularly difficult in the case of centrifuges of large size.
  • the securing is effected by rings or a grooved rim with a cord therearound it, such that the manual operations are very laborious in centrifuges of large diameter, because the operator can only reach the central axis with difficulty.
  • the action becomes even more difficult because the usually considerable height at which the bag is disposed makes it difficult to reach the rings of the central part to disengage the lifting hook or to detach the cord, owing to the charge of material and likewise the risk of accident.
  • the present invention is directed to a securing device for the removable bag for a centrifuge, the device ensuring the automatic centering of the bag and making unnecessary any manual action for putting it in position in the rotatable basket or bowl of the centrifuge, and likewise for removing the bag when the material has to be discharged.
  • This device consists on the one hand of a circular skirt which, upon fitting into the opening of the basket or bowl, is fastened to the upper edge of the outer cylindrical part of 'the bag, and is integral with a crown adapted to be fastened to annular means and/or hooks of the upper part of a lifting assembly hooked to a hoist, and on the other hand, a crosspiece connected to the edge of the central opening of the bag and comprising hook means adpated to cooperate with a hooking finger disposed in the central part of the lifting assembly.
  • FIGS. 1, 2 and 3 are part-sectional views showing a first embodiment of the device when the bag is respectively in its operative position in the drum of the centrifuge, after lifting from the drum, and in discharging position;
  • FIG. 4 is a fragmentary plan in a section taken on the line 4-4 of FIG.. 3, showing more particularly the crosspiece of the device;
  • FIG. 5 is a view corresponding to FIG. 1, but showing another embodiment of the device.
  • FIG. 6 is a part-sectional front elevation, showing at its leftand right-hand sides respectively the bag first as it is being engaged and then during emptying.
  • FIG. 1 there is seen an outer casing or shroud l of a conventional vertical centrifuge. as well as a movable basket or bowl 2, the basket having a large upper opening.
  • a removable crown 3 just fits inside this opening in the basket and supports a bag 4 secured by means of girdles on a circular skirt 5 of the crown 3. On this crown 3 hooks 6 are fixed. The bag is folded back in it central part, and,
  • the central part of the bag is connected to a rigid ring 7 of metal or other material, integral with a cruciform member 8 with hooks 9.
  • Another cruciform member 10 serves for the hooking and manipulation. It has a central hole 11 and rings or hooks 12 adapted to come into hooked engagement with the hooks 6 on the crown 3.
  • vertical supports 13 are secured to the floor and are connected together by a ring on which the cruciform member 10 rests at the time of emptying.
  • a sliding vertical rod 14 of polygonal section here shown as of square section, carrying at its upper end a ring to be hooked on a hook 16 of a manipulating hoist.
  • the assembly of the cruciform member 10 and the rod 14 always remain suspended from the hoist ready to take part in the manipulation. It is thus easy to understand the cycle of manipulation.
  • the assembly of cruciform member 10 and rod 14 suspended from the hoist is brought above the drum of the centrifuge so as to be hooked, by a slight pivoting of the assembly, to the hooks 6 of the crown 3, as well as to the hooks 9 of the cruciform member 8 (FIG. 2).
  • the cruciform member 10 When lowered by the hoist, the cruciform member 10 comes to rest on the ring connecting the feet 13 and the sliding of the rod 14 allows the bag to elongate vertically, for emptying, by downward discharge, the centrifuged material above the desired point of discharge.
  • FIG. 4 shows a part of the arms of the cruciform member 10, the square section of the central rod 14, and the four guide fingers 118, which allow, by having their sides chamfered, the central rod 14 to turn somewhat about its axis in order for the fingers 17 to engage in the hooks 9, as well as for the cruciform member 10 to pivot for the engagement with the hooks 6, all without any hand manipulation of the central hooks, which are difficult to reach, especially with a drum of large diameter.
  • the crown 3 of the bag 4 carries rings 20 in which can be engaged hooks 22 integral with a crosspiece 23 provided at its central part with means 24 such as a stub axle to provide for engagement with the hook of a hoist or other lifting means.
  • the crosspiece 23 also carries at its central part a hooking finger 25 pivoted to crosspiece 23 at 26 and including an integral radially extending lever 27 urged upwardly by a spring 28. At the free end of the lever 27 is hooked a controlling rope of a length depending on the lifting height of the hoist.
  • the central part of the basket is integral with a metal ring 7 that is connected to a small cruciform member 8.
  • the cruciform member 8 carries only one hook 30 adapted to co-operate with the hooking finger 25.
  • the cruciform member 8 carries hooks 32 pivoted thereto at 33 and adapted, when the bag 4 is disposed in the basket 2 of the centrifuge, to engage by centrifugal force against an internal lip 34 of the central part of the basket. This lip 34 is shown more particularly in FIG. 5.
  • a device according to claim 1 wherein said means on the crown for detachable connection with the lifting assembly comprises hooks adapted to be engaged in complementary hooks carried by the crosspiece of the lifting assembly.
  • a device wherein the means coupled to the hooking finger comprises a radial lever secured thereto, spring means acting on said lever to urge the hooking finger into an engaged position in the hook on the cruciform member, and a control member extending from said lever to displace the same against the action of the spring means to release the hook and allow the bag to drop by gravity to its open position.
  • control member is a rope depending from the lever at a free end thereof and disposed outside the outer portion of the bag.
  • a device as claimed in claim 1 comprising hook members pivotably connected to said cruciform member and freely depending therefrom for engaging the central cone of the basket under the action of centrifugal force.

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  • Centrifugal Separators (AREA)
US00175551A 1970-09-03 1971-08-27 Securing device for a removable bag for a centrifuge Expired - Lifetime US3788480A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7032813A FR2105509A5 (de) 1970-09-03 1970-09-03

Publications (1)

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US3788480A true US3788480A (en) 1974-01-29

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US00175551A Expired - Lifetime US3788480A (en) 1970-09-03 1971-08-27 Securing device for a removable bag for a centrifuge

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US (1) US3788480A (de)
DE (1) DE2141494C3 (de)
FR (1) FR2105509A5 (de)
GB (1) GB1349545A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101966490A (zh) * 2010-10-29 2011-02-09 江苏牡丹离心机制造有限公司 立式离心机
US20160059984A1 (en) * 2012-11-12 2016-03-03 Brian Klem Variable volume containers useful in pack-off operations

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1193579B (it) * 1981-02-26 1988-07-08 Comi Condor Spa Disposizione di fissaggio del setto filtrante al paniere nelle centrifughe
US4931415A (en) * 1986-08-20 1990-06-05 Ferro Corporation Metal melting crucible
CN113499864B (zh) * 2021-07-10 2022-08-23 濮阳天健生物科技有限公司 一种化工产品生产用离心机及其使用方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2039024A (en) * 1931-11-19 1936-04-28 American Laundry Mach Co Latch for extractor unloading nets
US2065978A (en) * 1931-09-21 1936-12-29 Firm Of H Krantz Apparatus for loading centrifugal extractors
US2285547A (en) * 1940-07-01 1942-06-09 North Coast Cleaners & Dyers I Extractor loading and unloading equipment
US2963311A (en) * 1959-04-06 1960-12-06 Miller Laundry Machinery Compa Bottom dump divided slings for laundry extractors

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2065978A (en) * 1931-09-21 1936-12-29 Firm Of H Krantz Apparatus for loading centrifugal extractors
US2039024A (en) * 1931-11-19 1936-04-28 American Laundry Mach Co Latch for extractor unloading nets
US2285547A (en) * 1940-07-01 1942-06-09 North Coast Cleaners & Dyers I Extractor loading and unloading equipment
US2963311A (en) * 1959-04-06 1960-12-06 Miller Laundry Machinery Compa Bottom dump divided slings for laundry extractors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101966490A (zh) * 2010-10-29 2011-02-09 江苏牡丹离心机制造有限公司 立式离心机
US20160059984A1 (en) * 2012-11-12 2016-03-03 Brian Klem Variable volume containers useful in pack-off operations
US10000306B2 (en) * 2012-11-12 2018-06-19 Brian Klem Variable volume containers useful in pack-off operations

Also Published As

Publication number Publication date
DE2141494B2 (de) 1980-01-10
GB1349545A (en) 1974-04-03
DE2141494C3 (de) 1980-09-11
DE2141494A1 (de) 1972-03-09
FR2105509A5 (de) 1972-04-28

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