US3683595A - Counterweight bag tensioning device - Google Patents
Counterweight bag tensioning device Download PDFInfo
- Publication number
- US3683595A US3683595A US28359A US3683595DA US3683595A US 3683595 A US3683595 A US 3683595A US 28359 A US28359 A US 28359A US 3683595D A US3683595D A US 3683595DA US 3683595 A US3683595 A US 3683595A
- Authority
- US
- United States
- Prior art keywords
- bag
- rotation
- arm member
- axis
- supporting
- 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
Links
Images
Classifications
-
- 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
- B01D46/04—Cleaning filters
-
- 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
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0005—Mounting of filtering elements within casings, housings or frames
-
- 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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2275/00—Filter media structures for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2275/20—Shape of filtering material
- B01D2275/203—Shapes flexible in their geometry, e.g. bendable, adjustable to a certain size
Definitions
- ABSTRAQT A bag tensioning device for use in a bag house and more particularly an improved counterweight and lever arm arrangement which maintains a dust collecting bag in equilibrium over a considerable range of total weight and with a relatively small vertical displacement of such a bag.
- the present invention which includes a bent lever arm principle wherein the pivot point of the bag attachment is located below the pivot point of the lever arm attachment to the supporting member, a dust collecting bag is maintained in equilibrium over a considerable range of total weight and with a relatively small vertical displacement of the supported bag. Accordingly, the occurrences of the bag fabric folding over at the bottom cuff thereof are greatly reduced within a given range of bag weight and as such the lever arm supporting device of this invention results in an increase in the useful life of bags with respect to the life expectancy of such bags when using prior devices.
- FIG. 1 is a schematic plan view of a portion of a bag house incorporating the principles of this invention
- FIG. 2 is a partial side view of a plurality of dust collecting bags tensioned by means of a counterweight tensioning device of this invention
- FIG. 3 is an end view taken on lines 3-3 of FIG. 2 and
- FIG. 4 is a displacement diagram illustrating the relative positions of the counterweight tensioning device of this invention throughout various conditions within the bag house.
- Bag house construction of a type well known in the art include a plurality of dust collecting bags 10 suitably arranged therein to remove particulate matter from particle laden gas passed through such bag house.
- bags 10 thereof In order to obtain maximum filtering efficiency of a bag house construction, bags 10 thereof must be supported therein in such a manner that the maximum surface area of the filtering fabric of such bags 10 is exposed to the flow path of the particle laden gas.
- the bag supporting and tensioning assembly 12 of the present invention provides that the above specified support of bags 10 be accomplished by means of a lever arm and counterweight arrangement as hereinafter described in detail.
- Bag tensioning assembly 12 includes an elongated arm member 14 having spaced long'tudinally extending sides 16 and 18.
- a notch 20 extends transversely inwardly from side 16 adjacent one end 17 of member 14.
- Adjacent the other end 19 of member 14, a lug portion 22 depends transversely downwardly from side 18.
- An elongated bag carrying strap 24 has one end 21 thereof pivotally connected to lug portion 22 at strap pivot point 26 in any suitable manner, for example aligned transverse bores through strap 24 and lug portion 22 within which a known cotter pin assembly 28 is received.
- Strap pivot point 26 is located transversely downwardly from side 18.
- Bag tensioning assembly 12 is located upwardly from bags 10 when such assembly is operatively positioned within a bag house. As viewed in FIG. 2 such operative positioning results in sides 16 and 18 being, respectively, the uppermost and lowermost surfaces of arm member 14. Assembly 12 is carried by a bag house structural member 30 which is pivotally secured to arm member 14 at tensioning assembly pivot point 32. Assembly pivot point 32 is axially intermediate arm end 17 and strap pivot point 26 and transversely intermediate sides 16 and 18.
- the above discussed pivotal connection can be achieved in any suitable manner for example a support lug 34 depends downwardly from the bottom flange of structural member 30 and aligned transverse bores extend through lug 34 and arm member 14 at assembly pivot point 32 within which a known cotter pin assembly 36 is received.
- the tensioning assembly 12 is intended to be suitably connected to one or more bags 10 to maintain such bags 10 in tension throughout a wide range of dust accurnulation thereon.
- each tensioning assembly supports two bags 10, two such bags 10 being supported by a single tensioning assembly 12 being generally indicated as bag assembly 38.
- Bag assembly 38 comprises two bags 10 having the lower ends thereof shown as being suitably fixed to a shelf 40 of a bag house and having collar members 42 fixedly secured at the respective upper ends thereof.
- An elongated structural member, shown as pipe 44 extends transversely between collar members 42 and has the'respective ends thereof suitably secured to members 42.
- a lug member 46 is fixedly secured to member 44 on the vertical axis through the center of gravity 50 of assembly 38 and lug 44 extends upwardly from member 44 along the bag assembly vertical axis through the center of gravity 50.
- the magnitude of weight 52 is determined by summing the moments about tensioning assembly pivot point 32 and determining what weight is necessary for the sum of such moments to equal zero when the upper side 16 of lever arm 14 is horizontal with respect to the bag house within which tensioning assembly 12 is contained.
- a summation of the moments about pivot point 32 yields:
- the arm member 14 will continue rotating in a manner as described above until the eventual collapse of the bags 1i) supported by the assembly 12 or until further rotation thereof is prohibited by a stop means as for example, member 14 can rotate until side 16 thereof contacts the bottom flange of structural member 30.
- member 14 will be stopped from rotation prior to the collapse of bags 10 to avoid excessive folding of the bag fabric which would result in shortened bag life.
- an apparatus which would cause a rather rapid vertical displacement of bag assembly 38 such that arm member 14 will strike the stop means with sufficient momentum that the reaction force from such striking will be transmitted to bag assembly 38 to at least partially dislodge accumulated particulate matter therefrom.
- Such an apparatus is schematically illustrated in FIG. 2 only, as a plurality of high pressure discharge nozzles 60 which are suitably connected to the bag house frame (not shown) and to a high pressure source (not shown) of air.
- bag assembly 38 When a high pressure blast of air is discharged from nozzles 60, a pressure is applied at the upper surface of bag assembly 38 causing the rapid vertical displacement thereof which results in arm member 14 striking the bottom flange of structural member with sufficient force to dislodge accumulated particulate matter from bag assembly 38.
- other means can be provided to cause the above mentioned rapid vertical displacement of bag assembly 38, for example: suitably positioned rapping means which are either mechanically or electrically operable; or the collapsing of the bags 10 through a reverse How of air through the bag house.
- bag assembly 38 includes only one dust collecting bag or it can include a larger group of dust collecting bags than the two bag assembly 38 as described;
- bag assembly pivot point 26 can be in any location along a vertical drawn therethrough except in the same horizontal plane with pivot point 32 and still retain the advantages of less relative vertical displacement in relation to prior art tensioning assemblies;
- a plurality of bag assembly horizontal axes of rotation can be positioned along a vertical line and an operator can select which particular axis to use as conditions dictate; other structures can be used to connect bag assembly 38 to pivot point 26 than the strap 24 described, for example lug portions; and the like.
- a bag supporting and tensioning assembly for supporting and providing tension for dust collecting filter bags in a bag house throughout a predetermined range of bag weight, the improvement comprising; rigid means adapted to be secured within a bag house, an elongated lever arm member having means defining a first horizontal axis of rotation intermediate the axial ends thereof and being pivotally supported at said first axis of rotation by said rigid means; said arm member pivotally supporting at least one such dust collecting filter bag at pivot means defining a second horizontal axis of rotation inwardly adjacent one end of said arm member, weight means secured to said arm member at a point adjacent the other end of said arm member and longitudinally spaced from said means defining said first axis of rotation in counterbalancing relationship with said bag, said point of securement and said means defining said first axis of rotation being located on a substantially horizontal line, and said pivot means defining said second axis being located substantially below an extension of said horizontal line from said point of securement through and beyond said first axis.
- a bag supporting and tensioning assembly as specified in claim 1 wherein means pivotally supporting at least one of said dust collecting bags comprises a strap member pivotally connected at one end thereof to said arm member and connected at the other end thereof to said dust collecting bags.
- a bag supporting and tensioning assembly as specified in claim 1 additionally including rotation limiting means which limit the rotation of said arm member about said first horizontal axis of rotation.
- a bag supporting and tensioning assembly as specified in claim 7 additionally including rotation instigating means which result in said arm member contacting said rotation limiting means with force sufficient to dislodge at least a portion of accumulated particulate matter from said dust collecting bags.
- a bag supporting and tensioning assembly for supporting and providing tension for dust collecting filter bags in a bag house throughout a predetermined range of bag weight
- the improvement comprising; a bag house, rigid means secured within said bag house, an elongated lever arm member having means defining a first horizontal axis of rotation intermediate the axial ends thereof and being pivotally supported at said first axis of rotation by said rigid means, said arm member pivotally supporting at least one of such dust collecting bags at pivot means defining a second horizontal axis of rotation inwardly adjacent one end of said arm member, weight means secured to said arm member at a point adjacent the other end of said arm member and longitudinally spaced from said means defining said first axis of rotation in counterbalancing relationship with said bag, said point of securement and said means defining said first axis of rotation being located on a substantially horizontal line and said pivot means defining said second axis being located substantially below a i ayes fifi fili allf ra s?
- a bag supporting and tensioning assembly as specified in claim 10 wherein said rotational instigating means comprises at least one high pressure air discharge apparatus secured to said bag house upwardly of said dust collecting bags.
Abstract
Description
Claims (11)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2835970A | 1970-04-14 | 1970-04-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3683595A true US3683595A (en) | 1972-08-15 |
Family
ID=21843017
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US28359A Expired - Lifetime US3683595A (en) | 1970-04-14 | 1970-04-14 | Counterweight bag tensioning device |
Country Status (2)
Country | Link |
---|---|
US (1) | US3683595A (en) |
CA (1) | CA943874A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5732709A (en) * | 1980-08-06 | 1982-02-22 | Environmental Elements Corp | Method and device for straining filter bag |
US4381039A (en) * | 1980-08-06 | 1983-04-26 | Koppers Company, Inc. | Filter bag weighted holder |
US4904287A (en) * | 1988-12-22 | 1990-02-27 | Electric Power Research Institute | Compact ceramic tube filter array high-temperature gas filtration |
US5562746A (en) * | 1994-04-11 | 1996-10-08 | Donaldson Company, Inc. | Air filter assembly for filtering air with particulate matter |
US20020131654A1 (en) * | 2001-03-19 | 2002-09-19 | Smith Sidney T. | Large volume flexible container |
US20030029982A1 (en) * | 2001-03-19 | 2003-02-13 | Hurst William S. | Container support |
US6902592B2 (en) * | 2002-10-25 | 2005-06-07 | United Air Specialists, Inc. | Apparatus and method for cleaning an air filter unit |
US20050241282A1 (en) * | 2004-04-28 | 2005-11-03 | Gordon Robert R | Self cleaning gas filtering system and method |
US20060075726A1 (en) * | 2004-10-13 | 2006-04-13 | Takuma Co., Ltd. | Nozzle and filter-type dust collector |
US7384783B2 (en) | 2004-04-27 | 2008-06-10 | Baxter International Inc. | Stirred-tank reactor system |
US20090272082A1 (en) * | 2008-04-30 | 2009-11-05 | Venturedyne, Ltd. | Dust collector with equalized cleaning performance |
US8864913B2 (en) | 2009-08-03 | 2014-10-21 | United Air Specialists, Inc. | Filter cleaning system and method |
US9604172B2 (en) | 2013-03-04 | 2017-03-28 | Donaldson Company, Inc. | Diverging nozzles and filter element cleaning systems using diverging nozzles |
US10245543B2 (en) | 2013-03-04 | 2019-04-02 | Donaldson Company, Inc. | Air filter systems and methods of using the same |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE493605A (en) * | ||||
US1632895A (en) * | 1923-03-06 | 1927-06-21 | Western Electric Co | Cleaner |
US2350011A (en) * | 1940-08-12 | 1944-05-30 | Owens Corning Fiberglass Corp | Filtering and filtering apparatus |
US2667233A (en) * | 1950-12-12 | 1954-01-26 | Walter O Vedder | Shaker mechanism for dust collector filter bags |
US3095289A (en) * | 1960-09-02 | 1963-06-25 | Cottrell Res Inc | Gas cleaning apparatus |
US3550358A (en) * | 1968-06-03 | 1970-12-29 | Robert V Mccabe | Filter and shaker means therefor |
-
1970
- 1970-04-14 US US28359A patent/US3683595A/en not_active Expired - Lifetime
-
1971
- 1971-04-07 CA CA109,864A patent/CA943874A/en not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE493605A (en) * | ||||
US1632895A (en) * | 1923-03-06 | 1927-06-21 | Western Electric Co | Cleaner |
US2350011A (en) * | 1940-08-12 | 1944-05-30 | Owens Corning Fiberglass Corp | Filtering and filtering apparatus |
US2667233A (en) * | 1950-12-12 | 1954-01-26 | Walter O Vedder | Shaker mechanism for dust collector filter bags |
US3095289A (en) * | 1960-09-02 | 1963-06-25 | Cottrell Res Inc | Gas cleaning apparatus |
US3550358A (en) * | 1968-06-03 | 1970-12-29 | Robert V Mccabe | Filter and shaker means therefor |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5732709A (en) * | 1980-08-06 | 1982-02-22 | Environmental Elements Corp | Method and device for straining filter bag |
US4373936A (en) * | 1980-08-06 | 1983-02-15 | Koppers Company, Inc. | Filter bag tensioning device and method |
US4381039A (en) * | 1980-08-06 | 1983-04-26 | Koppers Company, Inc. | Filter bag weighted holder |
JPS5837850B2 (en) * | 1980-08-06 | 1983-08-19 | エンヴアイロンメンタル エレメンツ コ−ポレ−シヨン | Filter bag tensioning method and device |
US4904287A (en) * | 1988-12-22 | 1990-02-27 | Electric Power Research Institute | Compact ceramic tube filter array high-temperature gas filtration |
US5562746A (en) * | 1994-04-11 | 1996-10-08 | Donaldson Company, Inc. | Air filter assembly for filtering air with particulate matter |
US7025318B2 (en) | 2001-03-19 | 2006-04-11 | Baxter International Inc. | Container support |
US7188744B2 (en) | 2001-03-19 | 2007-03-13 | Baxter International Inc. | Container support |
US20030075663A1 (en) * | 2001-03-19 | 2003-04-24 | Hurst William S. | Container support |
US20030075662A1 (en) * | 2001-03-19 | 2003-04-24 | Hurst William S. | Container support |
US20030029982A1 (en) * | 2001-03-19 | 2003-02-13 | Hurst William S. | Container support |
US20020131654A1 (en) * | 2001-03-19 | 2002-09-19 | Smith Sidney T. | Large volume flexible container |
US6902592B2 (en) * | 2002-10-25 | 2005-06-07 | United Air Specialists, Inc. | Apparatus and method for cleaning an air filter unit |
US7384783B2 (en) | 2004-04-27 | 2008-06-10 | Baxter International Inc. | Stirred-tank reactor system |
US20050241282A1 (en) * | 2004-04-28 | 2005-11-03 | Gordon Robert R | Self cleaning gas filtering system and method |
US7468082B2 (en) * | 2004-04-28 | 2008-12-23 | Gordon Robert R | Self cleaning gas filtering system and method |
US20060075726A1 (en) * | 2004-10-13 | 2006-04-13 | Takuma Co., Ltd. | Nozzle and filter-type dust collector |
US7485163B2 (en) * | 2004-10-13 | 2009-02-03 | Takuma Co., Ltd. | Nozzle and filter-type dust collector |
US20090272082A1 (en) * | 2008-04-30 | 2009-11-05 | Venturedyne, Ltd. | Dust collector with equalized cleaning performance |
US7918908B2 (en) * | 2008-04-30 | 2011-04-05 | Venturedyne, Ltd. | Dust collector with equalized cleaning performance |
US8864913B2 (en) | 2009-08-03 | 2014-10-21 | United Air Specialists, Inc. | Filter cleaning system and method |
US9718018B2 (en) | 2009-08-03 | 2017-08-01 | United Air Specialists, Inc. | Filter cleaning system and method |
US9604172B2 (en) | 2013-03-04 | 2017-03-28 | Donaldson Company, Inc. | Diverging nozzles and filter element cleaning systems using diverging nozzles |
US10245543B2 (en) | 2013-03-04 | 2019-04-02 | Donaldson Company, Inc. | Air filter systems and methods of using the same |
US11931681B2 (en) | 2013-03-04 | 2024-03-19 | Donaldson Company, Inc. | Air filter systems and methods of using the same |
Also Published As
Publication number | Publication date |
---|---|
CA943874A (en) | 1974-03-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: JOY TECHNOLOGIES INC., A CORP. OF DE.,PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JOY MANUFACTURING COMPANY, A CORP. OF PA;REEL/FRAME:004880/0430 Effective date: 19870529 Owner name: JOY TECHNOLOGIES INC., 301 GRANT STREET, PITTSBURG Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:JOY MANUFACTURING COMPANY, A CORP. OF PA;REEL/FRAME:004880/0430 Effective date: 19870529 |
|
AS | Assignment |
Owner name: JOY TECHNOLOGIES INC., PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JOY MANUFACTURING COMPANY, A CORP. OF PA;REEL/FRAME:004747/0261 Effective date: 19870626 Owner name: CITIBANK, N.A.,NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JOY TECHNOLOGIES INC., 301 GRANT STREET, PITTSBURGH, PA 15219, A DE CORP.;REEL/FRAME:004846/0025 Effective date: 19870626 Owner name: CITIBANK, N.A., 641 LEXINGTON AVENUE, NEW YORK, NE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:JOY TECHNOLOGIES INC., 301 GRANT STREET, PITTSBURGH, PA 15219, A DE CORP.;REEL/FRAME:004846/0025 Effective date: 19870626 Owner name: JOY TECHNOLOGIES INC., 301 GRANT STREET, PITTSBURG Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:JOY MANUFACTURING COMPANY, A CORP. OF PA;REEL/FRAME:004747/0261 Effective date: 19870626 |
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AS | Assignment |
Owner name: JOY MANUFACTURING COMPANY,STATELESS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JOY TECHNOLOGIES INCL., (A DE CORP.);REEL/FRAME:004827/0367 Effective date: 19870626 Owner name: JOY MANUFACTURING COMPANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE DATE;ASSIGNOR:JOY TECHNOLOGIES INCL., (A DE CORP.);REEL/FRAME:004827/0367 Effective date: 19870626 |
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AS | Assignment |
Owner name: CITIBANK, N.A., 641 LEXINGTON AVENUE, NEW YORK, NE Free format text: SECURITY INTEREST;ASSIGNOR:JOY TECHNOLOGIES INC.,;REEL/FRAME:004936/0730 Effective date: 19870626 |
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AS | Assignment |
Owner name: JOY TECHNOLOGIES INC., A CORP OF DE, PENNSYLVANIA Free format text: RELEASED BY SECURED PARTY;ASSIGNORS:MC CARTNEY, DEREK L.;ARCHIBALD, JOHN H.;REEL/FRAME:005237/0152 Effective date: 19870626 |
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AS | Assignment |
Owner name: JOY TECHNOLOGIES, INC., A CORP OF DE Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CITIBANK N.A.;REEL/FRAME:005237/0187 Effective date: 19891011 |
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AS | Assignment |
Owner name: CONNECTICUT NATIONAL BANK, THE, CONNECTICUT Free format text: SECURITY INTEREST;ASSIGNOR:JOY TECHNOLOGIES INC., A DE CORP.;REEL/FRAME:005173/0843 Effective date: 19891012 |