WO1997022765A1 - Air floor grating - Google Patents
Air floor grating Download PDFInfo
- Publication number
- WO1997022765A1 WO1997022765A1 PCT/US1996/019868 US9619868W WO9722765A1 WO 1997022765 A1 WO1997022765 A1 WO 1997022765A1 US 9619868 W US9619868 W US 9619868W WO 9722765 A1 WO9722765 A1 WO 9722765A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- grates
- air
- compost
- curing
- grate
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/48—Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/964—Constructional parts, e.g. floors, covers or doors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/145—Feedstock the feedstock being materials of biological origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Definitions
- the invention s based on Provisional Application entitled "Air Floor Grating" filed December 12, 1995 and claims the priority filing date of that application.
- the invention relates to the curing phase of the composting process. More specifically, the invention is directed to a unique air-floor design and method of construction which permits modular installation over existing non-aeration floors and for use by a complete new spectrum of end users from home owners to commercial plant operators.
- Prior art systems for curing compost commonly utilize a concrete floor containing rectangular trenches m which is laid perforated pipe the ends of which are supplied air from a common plenum.
- the pipes are overlaid with gravel to form a distribution system to permit front end loaders to traverse the floor and turn the compost periodically.
- a major problem of such systems is non-uniform air distribution resulting in unreliable curing of the compost.
- Another problem normally encountered in the use of such systems is clogging of the floor air vents necessitating shut down of the system until the vents have been cleared.
- a concomitant problem that results as the vents become clogged is that pressure required to maintain desired air flow increases.
- blowers of increased capacity are needed to insure optimum curing conditions to offset the effects of variable back pressure caused by clogging of the air vents.
- the above problems result in unproductive down time with attendant increase in the cost of operation.
- a still further problem of existing air distribution systems for compost curing is their complexity and cost.
- the present invention provides a solution to these problems. It is also to be noted that full use of the subject air floor grating system reduces maintenance requirements and improves effectiveness of the curing process. The air channels are more easily accessed and cleaned and the overall cost of the curing system is substantially reduced.
- Another aspect of the invention is the unique method of assembly of the systems elements and their adaptability to existing non-aeration floors and other diverse uses as explained below.
- the structural element comprising this invention is designed both to support a 2-3 meter depth of compost and allow air to pass freely through the structural element. Further, the element has the feature that the air passages will not plug even under traffic by rubber tired vehicles which normally would tend to compress and mat the compost on top of the element or in the orifices and consequently cause the compost to block the air passages.
- FIG. 1 is a plan view of an air floor grating element embodying one aspect of the invention
- Fig. 2 is a side view of the grating shown in Fig. 1;
- Fig. 3 is a cross-sectional view of one of the grating taken along the cutting plane 3-3 shown in Fig. 1;
- Fig. 4 is a partial sectional view of the air floor element taken along the cutting plane 4-4 shown m Fig. 1;
- Fig. 5a and 5b depict dimensional details of one preferred form of structural element;
- Fig. 6 - 8 depict examples of the diverse uses to which the grating element can be put;
- Fig. 9 shows an interlocking feature and one method of installation, and
- Fig. 10 illustrates an alternative form of grating support structure.
- FIG. 1 of the drawing there is shown a structural element 10.
- a structural element 10 By way of illustration the dimensions of preferred forms of air passages 12 are shown m Fig. 4 and Figs. 5a and 5b.
- One example of a preferred structural element having the requisite strength and resistance to corrosion is made of polypropylene.
- the unit shown in Fig. 1 contains 29 air slots whose narrowest openings 14 (Fig. 4) at its compost-contacting surface is approximately 1/16 of an inch. Each slot is 4 1/2 inches m lateral dimension. As seen in Fig. 4 the slot is tapered and at its base 16 is 1/2 inch wide.
- An alternative form of air slot designed to achieve the save objectives as the air slot shown m Fig. 1 is detailed in Figs.
- the air slot as show in those figures has an air slot which is 50 mils wide at the top tapering in three steps to 3/4 of an inch at its base.
- a preferred form of grate is 2 feet in overall length, 6 3/4 inches wide and 3/4 inch thick.
- Each grate is provided with interlocking tab portions 18.
- the design of the air slots insure that compost entering the slot does not plug the opening but falls through the grate openings into the trench below providing a self cleaning unit.
- the unit, m the application described, has a load bearing capacity of up to 400 lbs./sq.ft.; is capable of passing no less than 5 cubic ft.
- the grating elements are of a size and weight permitting installation of an air floor by individual home owners as well as installation by commercial users over existing floors or other surfaces.
- the air grating elements can be interconnected as seen in Fig. 9 to service any given design area.
- the grating can supported on pressure treated 4x4 wooden members 20 as seen in Fig. 9 or other forms of support means made of concrete, plastic, or other suitable material meeting the requisite strength and corrosion resistance requirements.
- One such alternative form of support structure is illustrated in Fig. 10.
- the support 21 is precast from concrete or other suitable material configured for retention of grates 10.
- This unique grating design permits air floors to be installed expeditiously and economically to meet any variety of operating conditions.
- containment strips 22 are employed.
- the grate is designed to be supported on its edge portions 24.
- the support means 20 are spaced to limit the bending moment to which the grate itself may be subjected. The short span allows the bending moment placed on the element to be within the structured limits of the plastic used while allowing the bulk of the load from a rubber tired vehicle to rest on the sides of the trench formed by the support means 20 across which the grating system spans.
- Figs 6, 1 and 8 illustrate a number of the diverse uses to which the grating can be put.
- Fig. 6 depicts its use m the floor of a bioconversion bay of the type shown in United States Patent Application Serial No. 08/379,896 filed January 30, 1995 assigned to the assignee of the subject invention, the teaching of which are hereby incorporated by reference.
- Fig. 8 shows its use in connection with an outdoor windrow of the type depicted m
- United States patent application 08/496,111 filed June 29, 1995 assigned to the assigned of the subject invention, the teaching of which is hereby incorporated by reference.
- the light weight and structural form of the grating elements make it readily adaptable to compost curing processes of variable size and complexity.
- the grate consists of a short structural span fabricated from tough plastic polymers or co-polymers provided with a series of narrow slit or air passages of unique configuration.
- the air passages have a narrow slit at the top of the opening, the width of which gets progressively wider as its depth increases down through the grate. This progressive widening prevents material that is pressed into the slit from compacting and plugging the openings and permits the material to fall into the trench below resulting m self cleaning of the unit.
- the lengths of the grates have to be short enough that they can be fabricated in conventional injection molding equipment. A nominal two foot length meets this requirement.
- the elements are interlocking so that they cannot easily be displaced from the trench by passing of a front end loader although in some applications it may be possible to eliminate the use of the interlocking tabs.
- each part of the grate not exceed 3/8 inches and preferable be less than 1/4 inch.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fertilizers (AREA)
- Processing Of Solid Wastes (AREA)
- Building Environments (AREA)
- Floor Finish (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ32563596A NZ325635A (en) | 1995-12-15 | 1996-12-12 | Air floor grating |
AU14188/97A AU712424B2 (en) | 1995-12-15 | 1996-12-12 | Air floor grating |
CA002239307A CA2239307C (en) | 1995-12-15 | 1996-12-12 | Air floor grating |
EP96944356A EP0866903A4 (en) | 1995-12-15 | 1996-12-12 | Air floor grating |
NO982138A NO982138L (en) | 1995-12-15 | 1998-05-12 | Air Floor Gratings |
IS4744A IS4744A (en) | 1995-12-15 | 1998-05-14 | Air-floor grid |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US865495P | 1995-12-15 | 1995-12-15 | |
US60/008,654 | 1995-12-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997022765A1 true WO1997022765A1 (en) | 1997-06-26 |
Family
ID=21732893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1996/019868 WO1997022765A1 (en) | 1995-12-15 | 1996-12-12 | Air floor grating |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0866903A4 (en) |
AU (1) | AU712424B2 (en) |
IS (1) | IS4744A (en) |
NO (1) | NO982138L (en) |
NZ (1) | NZ325635A (en) |
WO (1) | WO1997022765A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1431262A1 (en) * | 2002-12-18 | 2004-06-23 | Entsorga Italia S.R.L. | A method and a plant for the aerobic treatment of materials having a highly fermentable organic component |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US492777A (en) * | 1893-03-07 | Archibald buchanan | ||
US2269522A (en) * | 1940-06-17 | 1942-01-13 | Scullin Steel Co | Highway grating |
US4048960A (en) * | 1976-05-05 | 1977-09-20 | Danforth Agri-Resources | Slotted surface flooring for use in animal husbandry |
US4329939A (en) * | 1980-05-22 | 1982-05-18 | Bcm Manufacturing Ltd. | Flooring unit |
US4953501A (en) * | 1989-03-23 | 1990-09-04 | Bcm Manufacturing Ltd. | Flooring unit |
US5583045A (en) | 1995-01-30 | 1996-12-10 | Bedminster Bioconversion Corporation | Compost curing and odor control system |
EP0778818A1 (en) | 1995-06-29 | 1997-06-18 | Bedminster Bioconversion Corporation | Window curing and odor control system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4131893C1 (en) * | 1991-09-25 | 1992-10-29 | Hugo 7900 Ulm De Stuetzle | |
CA2089305C (en) * | 1993-02-11 | 1998-02-03 | James Wright | Continuous composter |
DE9316094U1 (en) * | 1993-10-21 | 1994-02-24 | Dalsem-Veciap B.V., Horst | Device for composting and / or biotechnological treatment of residues |
DE29507582U1 (en) * | 1995-05-06 | 1995-07-13 | Weidner GmbH, 85107 Baar-Ebenhausen | palette |
-
1996
- 1996-12-12 WO PCT/US1996/019868 patent/WO1997022765A1/en not_active Application Discontinuation
- 1996-12-12 NZ NZ32563596A patent/NZ325635A/en not_active IP Right Cessation
- 1996-12-12 EP EP96944356A patent/EP0866903A4/en not_active Withdrawn
- 1996-12-12 AU AU14188/97A patent/AU712424B2/en not_active Ceased
-
1998
- 1998-05-12 NO NO982138A patent/NO982138L/en not_active Application Discontinuation
- 1998-05-14 IS IS4744A patent/IS4744A/en unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US492777A (en) * | 1893-03-07 | Archibald buchanan | ||
US2269522A (en) * | 1940-06-17 | 1942-01-13 | Scullin Steel Co | Highway grating |
US4048960A (en) * | 1976-05-05 | 1977-09-20 | Danforth Agri-Resources | Slotted surface flooring for use in animal husbandry |
US4329939A (en) * | 1980-05-22 | 1982-05-18 | Bcm Manufacturing Ltd. | Flooring unit |
US4953501A (en) * | 1989-03-23 | 1990-09-04 | Bcm Manufacturing Ltd. | Flooring unit |
US5583045A (en) | 1995-01-30 | 1996-12-10 | Bedminster Bioconversion Corporation | Compost curing and odor control system |
EP0778818A1 (en) | 1995-06-29 | 1997-06-18 | Bedminster Bioconversion Corporation | Window curing and odor control system |
Non-Patent Citations (1)
Title |
---|
See also references of EP0866903A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1431262A1 (en) * | 2002-12-18 | 2004-06-23 | Entsorga Italia S.R.L. | A method and a plant for the aerobic treatment of materials having a highly fermentable organic component |
Also Published As
Publication number | Publication date |
---|---|
NO982138D0 (en) | 1998-05-12 |
NZ325635A (en) | 1999-08-30 |
AU712424B2 (en) | 1999-11-04 |
AU1418897A (en) | 1997-07-14 |
EP0866903A1 (en) | 1998-09-30 |
EP0866903A4 (en) | 2001-03-28 |
NO982138L (en) | 1998-05-12 |
IS4744A (en) | 1998-05-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5758462A (en) | Air floor grating system | |
US8425148B2 (en) | Storm water retention chambers with arch shaped row connector and method of connecting molded chamber structures | |
US3645100A (en) | Leaching chamber unit for soil absorption system | |
CA2949677C (en) | Modular liquid waste treatment system and method | |
US8007201B2 (en) | Septic system | |
US6679653B1 (en) | Leaching or drainage gallery with increased surface area | |
US5516229A (en) | Drain field system | |
US5520481A (en) | Drain field system | |
US6143188A (en) | Underdrain block for filter media system | |
AU617311B2 (en) | Composting plate system | |
EP0688906B1 (en) | Ground water drainage system | |
WO2005012664A2 (en) | Modular trench drain | |
AU712424B2 (en) | Air floor grating | |
CA2239307C (en) | Air floor grating | |
US8636444B2 (en) | Fluid distribution system | |
US8048668B1 (en) | System and method of aeration for compost processes | |
AU620283B1 (en) | Drainage grating | |
EP0601282A1 (en) | Molded element, especially for surface supporting animals in stables | |
US7762740B1 (en) | Fluid distribution system | |
KR100331066B1 (en) | A Purification Apparatus of Sewage and Waste Water Using a Capillary Permeation Trench Method without Power | |
US10124291B1 (en) | Trench spanning modules in a biofilter floor assembly | |
DE9404596U1 (en) | Kit for forming a ventilation, ventilation and drainage floor on a pallet basis | |
AU2004100723A4 (en) | Floor Aeration unit | |
SK171298A3 (en) | Liquid-permeable floor covering | |
CA1183696A (en) | Arrangement relating to a drainage pipe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AU CA EE ES HU IS KR LT LV MX NO NZ PL PT RU |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1996944356 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2239307 Country of ref document: CA Ref country code: CA Ref document number: 2239307 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 325635 Country of ref document: NZ |
|
WWP | Wipo information: published in national office |
Ref document number: 1996944356 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1996944356 Country of ref document: EP |