US3830043A - Clamp device for detachable fastening of a supporting unit, for example a venturi tube unit, for a bag in a bag filter - Google Patents

Clamp device for detachable fastening of a supporting unit, for example a venturi tube unit, for a bag in a bag filter Download PDF

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Publication number
US3830043A
US3830043A US00269087A US26908772A US3830043A US 3830043 A US3830043 A US 3830043A US 00269087 A US00269087 A US 00269087A US 26908772 A US26908772 A US 26908772A US 3830043 A US3830043 A US 3830043A
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United States
Prior art keywords
legs
bag
supporting unit
supporting
clamp
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Expired - Lifetime
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US00269087A
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English (en)
Inventor
K Nielsen
F Dethloff
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Ardal og Sunndal Verk AS
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Ardal og Sunndal Verk AS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material

Definitions

  • ABSTRACT A clamp device for detachable fastening of a supporting unit, for example a venturi tube unit, for a bag in bag filters with removable bags adapted, when removed, to be pulled upwardly through a hole for the supporting unit in a bag plate between the clean gas and the raw gas side of the bag filter.
  • the supporting unit is provided with a flange adapted to press a gasket onto a marginal area around the hole in the bag plate.
  • the clamp device is provided with a substantially U- shaped resilient clamp member having legs of such shape that they can engage the flange in four points. The ends of the legs are pivotably anchored in mountings attached to the bag plate on one side of the hole.
  • a transverse portion of the clamp member is adapted to be releasably retained in the actuated condition of the clamp member by a locking member on the other side of the hole.
  • This invention concerns a clamp device for detachable fastening of a supporting unit, for example a venturi tube unit for a bag in bag filters with replaceable bags.
  • bag filters for cleaning dust-containing gases for example pot gases in the electro-metallurgical industry
  • a great number of separate bags in order to give the filter installation the necessary capacity.
  • the individual bags have to be removable for inspection, service and possible replacement.
  • the bags are often mounted by means of a supporting unit which is then fastened to a bag plate between v the clean gas and the. raw gas side in the bag filter.
  • Such supporting units can for instance be in the form of socalled venturitubes in bag filters of that type which are cleaned by means of periodic reversed compressed air pulses through the filter bags.
  • the removable bags may be adapted, when removed, to be pulled upwardly through a hole for the supporting unit in the bag plate between the clean gas and the raw gas side of the bag filter, the supporting unit being provided with a flange adapted to press a gasket onto a marginal area around the hole in the bag plate.
  • the conventional way of fastening the supporting unit to the bag plate consists in the use of quite regular screws or bolts through the bag plate and the flange on the supporting unit.
  • This design has been found to involve great disadvantages, of which the following are most important:
  • the gasket which provides for sealing between the supporting unit and the bag plate may under the influence of the gas being treated, lose its elasticity and partially collapse, such that the tightening pressure and thereby the sealing effect of the gasket will be poor.
  • Another problem with the conventional way of fastening these supporting units for bags in bag filters is that considerable work is required for mounting and unmounting of supporting units with their corresponding bags, for example in connection with service and replacement. Mounting and tightening, or unscrewing and removing respectively, of for example four bolts for every supporting unit represents a very inconvenient technique considering the great number of bags found in larger filter installations.
  • the object of the present invention is thus to provide a new clamp device in replacement of the conventional fastening means in order to eliminate among others the above discussed disadvantages and deficiencies thereof.
  • a clamp device of the above type which includes a substantially U-shaped resilient clamp member having legs of such shape that they can engage the flange in four points.
  • the ends of the legs are pivotably anchored in mountings attached to the bag plate on one side of the hole.
  • a transverse portion of the clamp member is adapted to be releasably retained in the actuated condition of the clamp member by a locking member on the other side .of the hole.
  • the clamp device according to this invention involves an additional significant advantage.
  • This advantage has to do with the'fact that the clamp device makes it possible to reduce the requirements as to the rigidity or stiffness of the bag plate.
  • the clamp device makes it possible to reduce the requirements as to the rigidity or stiffness of the bag plate.
  • there will be a pressure shock which causes the bag plate to move if the same is not very rigid. Therefore, conventional screw or bolt fastening of the supporting unit has a tendency to cause the supporting unit to loosen.
  • the clamp device according to the present invention is not influenced by these movements.
  • FIG. 1 is a side view, with portions broken away, of the device.
  • FIG. 2 is a plan view of the device.
  • the arrangement in the drawings is shown with the conventional structural elements such as the bag plate 9 between the clean gas and raw gas side in the bag fil ter, a partly sketched bag 7 which hangs from a supporting unit 4, here shown in the form of a venturi tube unit of the type used in filters with cleaning of the filter bags by means of reverse flow or pulses of compressed air.
  • the supporting unit 4 is provided with a flange 6 which is adapted to press a gasket 10 onto the upper side of the bag plate 9.
  • the contour of the flanges 6' and 6" of adjacent supporting units is indicated on both sides of the supporting unit 4 shown.
  • a hole 8 being of such dimensions that the supporting unit with filter bag removed therefrom, can be pulled vertically upwardly through the hole for inspection, service or replacement.
  • the gasket 10 forms a tight seal between the supporting unit 4 and the bag plate 9.
  • the specific clamp device illustrated in the drawings essentially consists of three main parts.
  • a clamp member I made for example of spring steel and formed substantially in a U-shape as shown in FIG. 2.
  • a second main part is a locking member in the form of a hook-like element or strap 2 adapted to retain the resilient clamp member 1 in actuated condition in order to fix the supporting unit 4 as shown in the drawing.
  • mountings l4, l5, l6 and 17 for pivotably anchoring both the-clamp member I and the strap element 2.
  • the mountings 14, 15, 16 and 17 are fastened to the.
  • each mounting Seen in the vertical plane each mounting is U-shaped and the outer upright part is provided with a bore for the protrusions 31 and 32, respectively, formed at an angle on the end of each leg 11 and 12, respectively, of the clamp member.
  • the clamp member 1 in a simple way can be mounted in the mountings l4 and 15 by pressing the legs 11 and 12 towards each other and inserting the protrusions in the above mentioned bores in the mountings.
  • Each pair of mountings for example 14 and 15, has a double or combined function, since they also serve to anchor a strap element 3 for the supporting unit of the adjacent bag to the left of the supporting unit 4 as viewed in the drawings.
  • the mountings l6 and 17 in addition to anchoring strap element 2 also support the protrusions of the clamp member for the adjacent supporting unit to the right.
  • mountings shown can be shaped in different ways, including combined in pairs such that for example the two separate mountings l4 and 15 actually constitute an integrated part.
  • the legs 11 and 12 of the clamp member are formed in a slight or flattened W-shape seen in the vertical plane, so that the legs of the clamp member when in the actuated condition press against the flange 6 in four points 11a and 11b, 12a and 1212, respectively.
  • the transverse portion 33 of the clamp member is substantially straight and is adapted to fit into a hook 22 on the strap element 2, this hook being directed downwardly in the assembled position.
  • This strap element is pivotable about an axis 21 and has an extended flap l9 directed generally upwardly for convenient and simple operation when a filter bag 7 is to be mounted or removed.
  • an auxiliary or mounting clamp member 41 (indicated with dotted lines in PK]. 1) which can also be generally U-shaped, but with a smaller spacing between the legs than in the clamp member I, and adapted to be inserted in bores 18 provided above the anchoring bores for the strap elements in the inner upright parts of the mountings l4, l5 and 16, 17, respectively.
  • Such bore 18 is indicated in the mounting in FIG. 2.
  • This auxiliary clamp member (not shown in FIG. 2) can be used to press down the above mentioned clamp members by engaging the transverse portion 33 thereof.
  • clamp members 1 By suitably shaping the clamp members 1 described, these may also be used directly as auxiliary clamp members, such that a particularly shaped auxiliary clamp member will be superfluous.
  • the clamp device according to the present invention represents a very advantageous solution to the problems discussed in the introductory part of this description, as this solution allows quick mounting and removing of the bags in a bag filter, and at the same time a sufficient sealing between the supporting unit and the bag plate always is achieved, even if the gasket during operation should deteriorate.
  • each of said legs having two contact means thereon adapted to be pressed downwardly against said flange of said supporting unit for pressing said flange against said gasket;
  • mounting means attached to said bag plate adjacent one side of said opening for selectively pivotally anchoring second ends of each of said legs of said clamping member
  • locking member means pivotally mounted with respect to said bag plate adjacent said opening at a position thereof opposite the position of said mounting means, for selectively releasably retaining said transverse portion of said clamping member and for pressing said two contact means of each of said legs downwardly onto said flange at four points around said opening;
  • each of said legs has, as viewed in a longitudinal plane substantially perpendicular to the plane of said clamping member, a flattened W-shaped form, and said contact means of each of said legs comprise the two lowermost points of said W-shaped legs.
  • a clamp device as claimed in claim 1 further comprising an auxiliary clamp member mounted to extend across said supporting unit to press downwardly on said transverse portion of said clamping member.
  • a plurality of clamp devices as claimed in claim 1, for use in an air filter installation which includes a plurality of bag filters and associated supporting units extending through a plurality of openings in said bag plate; wherein said mounting means comprises a mounting attached to said bag plate between each two adjacent of said openings, each mounting having means for anchoring the second ends of the legs of the clamping member of one of said two adjacent openings and means for supporting the locking member means of the other of said two adjacent openings.
  • each of said mountings comprises four upwardly extending straps, the two outermost of said straps having holes therein constituting said anchoring means for said second ends of said legs of said clamping member of said one of said two adjacent openings, and the two innermost of said straps supporting a horizontal axis constituting said supporting means for said locking member means of said other of said two adjacent openmgs.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
US00269087A 1971-07-14 1972-07-05 Clamp device for detachable fastening of a supporting unit, for example a venturi tube unit, for a bag in a bag filter Expired - Lifetime US3830043A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO2691/71A NO130566C (enrdf_load_stackoverflow) 1971-07-14 1971-07-14

Publications (1)

Publication Number Publication Date
US3830043A true US3830043A (en) 1974-08-20

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ID=19879046

Family Applications (1)

Application Number Title Priority Date Filing Date
US00269087A Expired - Lifetime US3830043A (en) 1971-07-14 1972-07-05 Clamp device for detachable fastening of a supporting unit, for example a venturi tube unit, for a bag in a bag filter

Country Status (4)

Country Link
US (1) US3830043A (enrdf_load_stackoverflow)
CA (1) CA995152A (enrdf_load_stackoverflow)
GB (1) GB1373060A (enrdf_load_stackoverflow)
NO (1) NO130566C (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157901A (en) * 1978-04-07 1979-06-12 The Air Preheater Company, Inc. Filter bag assembly including a venturi-cage assembly
US4253856A (en) * 1979-11-09 1981-03-03 American Air Filter Company, Inc. Filter arrangement
US4257790A (en) * 1979-10-10 1981-03-24 Henningsen Foods, Inc. Quick change filter bag arrangement
US4436621A (en) 1982-08-09 1984-03-13 Oakland Products, Inc. Pressure vessel having a plurality of filtering elements
US4504288A (en) * 1983-04-29 1985-03-12 Ventilatorenfabrik Oelde Gmbh Tubular-filter device with compressed-air cleanout
US4713174A (en) * 1986-07-22 1987-12-15 Industrial Filter & Pump Mfg. Co. Mounting arrangement for a tube-type filter element
US5062873A (en) * 1989-05-12 1991-11-05 Karlsson Roger S Device at a filter hose
US5474586A (en) * 1994-05-11 1995-12-12 Minnesota Mining And Manufacturing Company Candle filter assembly and filtration system
US5549723A (en) * 1994-08-31 1996-08-27 Terry; Daniel J. Filter cap
US6179889B1 (en) 1999-07-07 2001-01-30 Shop Vac Corporation Vacuum cleaner tank assembly
US6451078B2 (en) 1999-07-07 2002-09-17 Shop-Vac Corporation Fitting for vacuum bags
WO2006045268A1 (de) * 2004-10-26 2006-05-04 Intensiv-Filter Gmbh & Co. Kg Staubfilter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2551866C3 (de) * 1975-09-29 1980-04-30 Flex-Kleen Corp., Chicago, Ill. (V.St.A.) Einrichtung zum Einbau von Schlauchfilterbaugruppen

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US398495A (en) * 1889-02-26 Bottle-stopper
US1515537A (en) * 1923-12-10 1924-11-11 Ashton John Cooper Combined funnel support and receptacle cover
US1642278A (en) * 1925-11-05 1927-09-13 Wright Aeronautical Corp Fastener
US2207154A (en) * 1940-07-09 Stovepipe fastener
US2638161A (en) * 1953-05-12 Air shutter for gas burners
DE912043C (de) * 1948-10-02 1954-05-24 A Hering Ag Vorrichtung zur Reinigung mehrerer keramischer Filterkerzen
DE946194C (de) * 1952-08-09 1956-07-26 Alfred Knecht Befestigung fuer einen zwischen Filtergehaeuseteilen vorgesehenen Vollgummiring
US3226961A (en) * 1963-05-13 1966-01-04 Washing Machine Res And Dev Co Washing machines
US3383774A (en) * 1965-12-23 1968-05-21 Gen Mills Inc Apparatus and method for treating pulverulent or granular material
US3432997A (en) * 1967-02-15 1969-03-18 Cons Foods Corp End closure for a disposable vacuum cleaner dust bag
US3724179A (en) * 1966-12-26 1973-04-03 Electrolux Ab Self-sealing end closure for disposable dust bag

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US398495A (en) * 1889-02-26 Bottle-stopper
US2207154A (en) * 1940-07-09 Stovepipe fastener
US2638161A (en) * 1953-05-12 Air shutter for gas burners
US1515537A (en) * 1923-12-10 1924-11-11 Ashton John Cooper Combined funnel support and receptacle cover
US1642278A (en) * 1925-11-05 1927-09-13 Wright Aeronautical Corp Fastener
DE912043C (de) * 1948-10-02 1954-05-24 A Hering Ag Vorrichtung zur Reinigung mehrerer keramischer Filterkerzen
DE946194C (de) * 1952-08-09 1956-07-26 Alfred Knecht Befestigung fuer einen zwischen Filtergehaeuseteilen vorgesehenen Vollgummiring
US3226961A (en) * 1963-05-13 1966-01-04 Washing Machine Res And Dev Co Washing machines
US3383774A (en) * 1965-12-23 1968-05-21 Gen Mills Inc Apparatus and method for treating pulverulent or granular material
US3724179A (en) * 1966-12-26 1973-04-03 Electrolux Ab Self-sealing end closure for disposable dust bag
US3432997A (en) * 1967-02-15 1969-03-18 Cons Foods Corp End closure for a disposable vacuum cleaner dust bag

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157901A (en) * 1978-04-07 1979-06-12 The Air Preheater Company, Inc. Filter bag assembly including a venturi-cage assembly
US4257790A (en) * 1979-10-10 1981-03-24 Henningsen Foods, Inc. Quick change filter bag arrangement
US4253856A (en) * 1979-11-09 1981-03-03 American Air Filter Company, Inc. Filter arrangement
US4436621A (en) 1982-08-09 1984-03-13 Oakland Products, Inc. Pressure vessel having a plurality of filtering elements
US4504288A (en) * 1983-04-29 1985-03-12 Ventilatorenfabrik Oelde Gmbh Tubular-filter device with compressed-air cleanout
US4713174A (en) * 1986-07-22 1987-12-15 Industrial Filter & Pump Mfg. Co. Mounting arrangement for a tube-type filter element
US5062873A (en) * 1989-05-12 1991-11-05 Karlsson Roger S Device at a filter hose
US5474586A (en) * 1994-05-11 1995-12-12 Minnesota Mining And Manufacturing Company Candle filter assembly and filtration system
US5549723A (en) * 1994-08-31 1996-08-27 Terry; Daniel J. Filter cap
US6179889B1 (en) 1999-07-07 2001-01-30 Shop Vac Corporation Vacuum cleaner tank assembly
US6451078B2 (en) 1999-07-07 2002-09-17 Shop-Vac Corporation Fitting for vacuum bags
USRE39595E1 (en) 1999-07-07 2007-05-01 Shop Vac Corporation Vacuum cleaner tank assembly
WO2006045268A1 (de) * 2004-10-26 2006-05-04 Intensiv-Filter Gmbh & Co. Kg Staubfilter

Also Published As

Publication number Publication date
NO130566B (enrdf_load_stackoverflow) 1974-09-30
GB1373060A (en) 1974-11-06
NO130566C (enrdf_load_stackoverflow) 1975-01-08
CA995152A (en) 1976-08-17

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