WO2005018302A1 - A pneumatic distributor of granular and/or powdery materials, in particular for sowing machines - Google Patents
A pneumatic distributor of granular and/or powdery materials, in particular for sowing machines Download PDFInfo
- Publication number
- WO2005018302A1 WO2005018302A1 PCT/IT2003/000518 IT0300518W WO2005018302A1 WO 2005018302 A1 WO2005018302 A1 WO 2005018302A1 IT 0300518 W IT0300518 W IT 0300518W WO 2005018302 A1 WO2005018302 A1 WO 2005018302A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- duct
- venturi
- flow
- main
- air
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/04—Single-grain seeders with or without suction devices
- A01C7/042—Single-grain seeders with or without suction devices using pneumatic means
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/08—Broadcast seeders; Seeders depositing seeds in rows
- A01C7/081—Seeders depositing seeds in rows using pneumatic means
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/08—Broadcast seeders; Seeders depositing seeds in rows
- A01C7/081—Seeders depositing seeds in rows using pneumatic means
- A01C7/082—Ducts, distribution pipes or details thereof for pneumatic seeders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/58—Devices for accelerating or decelerating flow of the materials; Use of pressure generators
Definitions
- the present invention relates to a pneumatic distributor of granular and/or powdery materials according to the characteristics set out in the preamble to main Claim 1.
- Distributors of the type indicated are used particularly but not exclusively in the technical field of sowing machines with pneumatic seed transportation.
- a dosing device for example, of the volumetric type
- the dosing device supplies metered quantities of seed into a Venturi duct (in short a "Venturi") by means of which the seed is introduced into an air-flow in a main duct of the distributor.
- the air-flow is generated by forced ventilation, for example, by means of a blower or similar air-pressurization means so as to convey the air and seed mixture towards the sowing regions in a jet.
- the main object of the invention is to provide a distributor which is designed structurally and functionally to overcome the limitations discussed with reference to the prior art mentioned. This object is achieved by the invention by means of a distributor formed in accordance with the appended claims.
- Figure 1 is a schematic view of a distributor formed in accordance with the present invention.
- Figure 2 is a view corresponding to that of Figure 1, and showing a variant of the invention.
- a pneumatic distributor of granular and/or powdery materials designed particularly for the distribution of cereal seeds and the like and formed in accordance with the invention, is shown schematically and generally indicated 1.
- the distributor may advantageously be arranged for mounting on a sowing machine of the known type produced by the Applicant.
- the distributor 1 comprises a seed-loading hopper 2 on the base of which is fitted a volumetric dosing device 3 which has a roller 4 with blades 5 and which can deliver metered quantities of seeds in a continuous and calibrated flow of material.
- the flow is conveyed, by means of a chute 6 arranged beneath the dosing roller, into the vicinity of an opening 7 of a main duct 8 of the distributor for the pneumatic transportation of the seeds to the sowing regions, as will be explained in detail below.
- the main duct 8 has a first end 8a in the region of which it is connected to the output opening of a fan 9 or other similar blowing means suitable for producing a flow of air under pressure in the duct and a second, opposite end 8b from which suitable branches, all indicted 10, extend for the distribution of the material at a plurality of points.
- a Venturi duct 11 is also defined in the main duct 8 and comprises a portion 11a which converges, with reference to the direction of the air-flow (from the end 8a towards the end 8b), an intermediate portion lib with a narrow cross- section, and a diverging, output portion lie of the Venturi.
- the opening 7 is formed in the main duct 8 in the region of the narrow cross-sectioned portion lib, straddling the converging and diverging portions of the Venturi.
- this intermediate, narrow cross-sectioned portion is the portion in which the air-flow passing through the Venturi has the greatest speed and the lowest pressure.
- the opening 7 for the introduction of the material is advantageously formed by a circumferential interruption in the main duct 8, surrounded by a cup-shaped element 12 which is connected axially to the converging portion of the Venturi and can direct the dosed material into the narrow cross-sectioned portion of the Venturi.
- the distributor 1 also comprises an auxiliary duct 13 extending to connect a section 14 of the main duct 8 that is upstream of the Venturi, to a section 15 thereof that is downstream of the Venturi, thus constituting a duct which bypasses the Venturi duct.
- a portion of the air-flow generated by the fan 9 is thus tapped off by this duct 3 in the region of the section 14 and is introduced, downstream of the Venturi (section 15), into the air and seed mixture produced in the main duct.
- the bypass duct 13, which is advantageously selected with a diameter such that the flow of air and the pressure in the main duct are not reduced, is preferably introduced into the main duct 8 directly at the output of the diverging portion lie of the Venturi.
- the kinetic component of the air-seed mixture is thus suitably increased so as advantageously to increase the flow- rate of the material conveyed through the main duct.
- the dosed seed is drawn into the main duct 8, thus promoting mixing with the air-flow which is generated by the fan 9 and passes through the Venturi 11, and also promoting the dispersal of the seeds in the air-flow, so that it is possible to economize on the "mixing" portion which is normally made of corrugated pipe.
- both of the auxiliary ducts 13 are connected to the main duct 8 in the same sections of the main duct 8, upstream and downstream of the Venturi 11, respectively.
- the flow-rate of material distributed can be increased by virtue of the provision of one or more bypass ducts according to the invention, which can recover some of the fan power that is blocked and not utilized because of the choking brought about by the Venturi.
- Tests carried out by the Applicant have shown, by virtue of the structure of the distributor according to the invention, an increase in flow-rate of from a minimum of 25% up to more than 100% relative to the value obtained in known applications, for given values of all of the other operating parameters, including the dimensions of the Venturi and the nominal power of the fan.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
- Sowing (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002535027A CA2535027A1 (en) | 2003-08-26 | 2003-08-26 | A pneumatic distributor of granular and/or powdery materials, in particular for sowing machines |
AU2003265144A AU2003265144A1 (en) | 2003-08-26 | 2003-08-26 | A pneumatic distributor of granular and/or powdery materials, in particular for sowing machines |
AT03818280T ATE388619T1 (en) | 2003-08-26 | 2003-08-26 | COMPRESSED AIR DISTRIBUTOR OF GRANULAR AND/OR POWDERY MATERIALS, ESPECIALLY FOR SEED MACHINES |
PCT/IT2003/000518 WO2005018302A1 (en) | 2003-08-26 | 2003-08-26 | A pneumatic distributor of granular and/or powdery materials, in particular for sowing machines |
DE60319748T DE60319748T2 (en) | 2003-08-26 | 2003-08-26 | AIR DISTRIBUTORS OF GRAIN AND / OR POWDER MATERIAL, IN PARTICULAR FOR SEWING MACHINES |
US10/569,189 US7413387B2 (en) | 2003-08-26 | 2003-08-26 | Pneumatic distributor of granular and/or powdery materials, in particular for sowing machines |
ES03818280T ES2302983T3 (en) | 2003-08-26 | 2003-08-26 | A PNEUMATIC DISTRIBUTOR FOR GRANULATED AND / OR POWDERED MATERIALS, IN PARTICULAR FOR SEEDING MACHINES. |
EP03818280A EP1657974B1 (en) | 2003-08-26 | 2003-08-26 | A pneumatic distributor of granular and/or powdery materials, in particular for sowing machines |
CNB038269767A CN100415071C (en) | 2003-08-26 | 2003-08-26 | Pneumatic distributor of granular and/or powdery materials, in particular for sowing machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IT2003/000518 WO2005018302A1 (en) | 2003-08-26 | 2003-08-26 | A pneumatic distributor of granular and/or powdery materials, in particular for sowing machines |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005018302A1 true WO2005018302A1 (en) | 2005-03-03 |
Family
ID=34204143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IT2003/000518 WO2005018302A1 (en) | 2003-08-26 | 2003-08-26 | A pneumatic distributor of granular and/or powdery materials, in particular for sowing machines |
Country Status (9)
Country | Link |
---|---|
US (1) | US7413387B2 (en) |
EP (1) | EP1657974B1 (en) |
CN (1) | CN100415071C (en) |
AT (1) | ATE388619T1 (en) |
AU (1) | AU2003265144A1 (en) |
CA (1) | CA2535027A1 (en) |
DE (1) | DE60319748T2 (en) |
ES (1) | ES2302983T3 (en) |
WO (1) | WO2005018302A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CZ303878B6 (en) * | 2011-12-20 | 2013-06-05 | Farmet A.S. | Device for feeding grains |
WO2013130003A1 (en) * | 2012-03-01 | 2013-09-06 | Väderstad-Verken Ab | Method for calibrating a device for feeding a granular or powder material and such device |
EP2448392A4 (en) * | 2009-07-02 | 2013-10-30 | Kinze Mfg Inc | Air entrainment device for seed delivery |
EP2808606A1 (en) | 2013-05-27 | 2014-12-03 | Eurl Dominique Hanne | Device and method for transporting and dispensing solid fuel |
EP3620041A1 (en) * | 2018-09-05 | 2020-03-11 | Deere & Company | A work vehicle and method of operating such |
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DE102007062967A1 (en) | 2007-12-21 | 2009-06-25 | Horsch Maschinen Gmbh | Pneumatic single grain conveyor for e.g. corn-, Soya or beet spreading machine, has separating device decoupled from sowing plough, and pneumatic delivery pipe opening laterally and arranged lateral to perforated disc |
US7798078B2 (en) * | 2008-11-14 | 2010-09-21 | Cnh Canada, Ltd. | Granular containment assembly and method |
US7779769B2 (en) | 2008-11-14 | 2010-08-24 | Cnh Canada, Ltd. | Agricultural implement with dense phase product flow from a primary container |
US8342373B2 (en) * | 2008-11-14 | 2013-01-01 | Cnh Canada, Ltd. | Valve and method for dense phase flow control |
US7789103B2 (en) | 2008-11-14 | 2010-09-07 | Cnh Canada, Ltd. | Dense phase induction system and method |
US7743719B2 (en) | 2008-11-14 | 2010-06-29 | Cnh Canada, Ltd. | Sectional distribution of granular product |
US7798079B2 (en) | 2008-11-14 | 2010-09-21 | Cnh Canada, Ltd. | Pressure supply assembly for an agricultural implement with dense phase product flow |
US7752984B2 (en) | 2008-11-14 | 2010-07-13 | Cnh Canada, Ltd. | Device and method for dense phase transport of seed |
US7640877B1 (en) | 2008-11-14 | 2010-01-05 | Cnh Canada, Ltd. | Dense phase distribution branch |
US7806061B2 (en) * | 2008-11-14 | 2010-10-05 | Cnh Canada, Ltd. | Agricultural implement with dense phase product dispensing and purging |
US7866269B2 (en) * | 2009-06-08 | 2011-01-11 | Cnh Canada, Ltd. | Method and apparatus for regulating air flow through supply conduits through which product entrained in an air flow is provided to multiple on-row product containers of an agricultural implement |
US8234987B2 (en) | 2009-06-29 | 2012-08-07 | Cnh Canada, Ltd. | Inductor assembly for a product conveyance system |
US8821078B2 (en) * | 2011-01-07 | 2014-09-02 | Conagra Foods Lamb Weston, Inc. | Fluid-based article distribution and sorting system |
US8684636B2 (en) * | 2011-03-09 | 2014-04-01 | James Dunstan | Air seeder venting system |
IN2014MN01017A (en) * | 2012-03-22 | 2015-07-03 | Bayer Ip Gmbh | |
US9173341B2 (en) * | 2012-12-07 | 2015-11-03 | Dow Agrosciences Llc | Positioning equipment |
US9265190B2 (en) * | 2013-01-09 | 2016-02-23 | Cnh Industrial America Llc | Seed inductor box for an agricultural implement having multiple air paths |
US9439344B2 (en) * | 2013-01-09 | 2016-09-13 | Cnh Industrial Canada, Ltd. | Mirrored inductor segment pairs of an inductor box of an agricultural implement |
US9215840B2 (en) | 2013-01-09 | 2015-12-22 | Cnh Industrial Canada, Ltd. | Seed inductor for an agricultural implement having an air bypass channel |
US9215841B2 (en) | 2013-01-09 | 2015-12-22 | Cnh Industrial America Llc | Seed inductor for an agricultural implement having an adjustable air bypass |
US9546051B2 (en) | 2013-12-17 | 2017-01-17 | Cnh Industrial Canada, Ltd. | System for increasing throughput of an agricultural product metering system |
ITUB20155280A1 (en) * | 2015-10-19 | 2017-04-19 | Matermacc S P A | Distributor of material for agricultural machinery. |
BR112018070427B1 (en) * | 2016-04-04 | 2022-10-04 | Clean Seed Agricultural Technologies Ltd | AIR COLLECTOR SYSTEM TO SUPPLY A GRANULAR AGRICULTURAL PRODUCT TO A PLURALITY OF SEED MEASUREMENT FLOW CONTROL DEVICES |
CN105850254A (en) * | 2016-04-06 | 2016-08-17 | 山东胜伟园林科技有限公司 | Soil loosening and sowing composite operation machine for saline and alkaline land |
CN106068815A (en) * | 2016-07-18 | 2016-11-09 | 湖南文理学院 | A kind of minute seeds seeder |
US10531606B2 (en) * | 2016-07-19 | 2020-01-14 | Cnh Industrial America Llc | Metering system for an agricultural system |
CN109287211B (en) * | 2018-12-04 | 2020-07-07 | 中国农业大学 | Pneumatic accelerating wheat jetting and sowing device |
CN109566017B (en) * | 2019-01-25 | 2020-07-28 | 中国农业大学 | Alfalfa pneumatic conveying type collecting and discharging device |
AU2020220166A1 (en) * | 2019-08-22 | 2021-03-11 | Ausplow Pty. Ltd. | Section control system |
CN111642193B (en) * | 2020-06-24 | 2022-03-08 | 山东省农业机械科学研究院 | Pneumatic centralized-discharging electric-driving type seed metering device, system and method for grains |
US11229158B1 (en) * | 2020-07-20 | 2022-01-25 | Deere & Company | Air distributor diverter valve |
US20220053687A1 (en) * | 2020-08-20 | 2022-02-24 | Deere & Company | Pressure balanced meter assembly and method of use |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1165790A (en) * | 1967-07-07 | 1969-10-01 | Horstine Farmery Ltd | Improvements in or relating to Applicators of Granular and Powder Material |
US5980163A (en) * | 1997-08-18 | 1999-11-09 | Deere & Company | Distribution manifold for air seeder |
US20030133759A1 (en) * | 2000-04-11 | 2003-07-17 | Henrik Winther | Agricultural machine |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2079404U (en) * | 1990-07-21 | 1991-06-26 | 吉林农业大学 | Seeder with disc distributing device for fine seeding vegetable |
CN2129056Y (en) * | 1991-07-07 | 1993-04-07 | 河南农业大学 | Rice direct-seeding device capable of being slung over shoulder |
CN2149090Y (en) * | 1992-07-17 | 1993-12-15 | 程秀焕 | Negative attracting device for motor exhaust pipe |
CN2540084Y (en) * | 2002-05-15 | 2003-03-19 | 新疆兵团农机推广中心 | Seeder with seed pneumatic suction device |
-
2003
- 2003-08-26 EP EP03818280A patent/EP1657974B1/en not_active Expired - Lifetime
- 2003-08-26 CA CA002535027A patent/CA2535027A1/en not_active Abandoned
- 2003-08-26 AU AU2003265144A patent/AU2003265144A1/en not_active Abandoned
- 2003-08-26 CN CNB038269767A patent/CN100415071C/en not_active Expired - Fee Related
- 2003-08-26 AT AT03818280T patent/ATE388619T1/en not_active IP Right Cessation
- 2003-08-26 US US10/569,189 patent/US7413387B2/en not_active Expired - Fee Related
- 2003-08-26 WO PCT/IT2003/000518 patent/WO2005018302A1/en active IP Right Grant
- 2003-08-26 DE DE60319748T patent/DE60319748T2/en not_active Expired - Lifetime
- 2003-08-26 ES ES03818280T patent/ES2302983T3/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1165790A (en) * | 1967-07-07 | 1969-10-01 | Horstine Farmery Ltd | Improvements in or relating to Applicators of Granular and Powder Material |
US5980163A (en) * | 1997-08-18 | 1999-11-09 | Deere & Company | Distribution manifold for air seeder |
US20030133759A1 (en) * | 2000-04-11 | 2003-07-17 | Henrik Winther | Agricultural machine |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2448392A4 (en) * | 2009-07-02 | 2013-10-30 | Kinze Mfg Inc | Air entrainment device for seed delivery |
EP2724600A1 (en) * | 2009-07-02 | 2014-04-30 | Kinze Manufacturing, Inc. | Air entrainment device for seed delivery |
CZ303878B6 (en) * | 2011-12-20 | 2013-06-05 | Farmet A.S. | Device for feeding grains |
WO2013130003A1 (en) * | 2012-03-01 | 2013-09-06 | Väderstad-Verken Ab | Method for calibrating a device for feeding a granular or powder material and such device |
EP2808606A1 (en) | 2013-05-27 | 2014-12-03 | Eurl Dominique Hanne | Device and method for transporting and dispensing solid fuel |
EP3620041A1 (en) * | 2018-09-05 | 2020-03-11 | Deere & Company | A work vehicle and method of operating such |
US10993367B2 (en) | 2018-09-05 | 2021-05-04 | Deere & Company | Commodity delivery system for work vehicle with venturi suction generator |
Also Published As
Publication number | Publication date |
---|---|
ATE388619T1 (en) | 2008-03-15 |
EP1657974B1 (en) | 2008-03-12 |
DE60319748T2 (en) | 2009-04-02 |
AU2003265144A1 (en) | 2005-03-10 |
US20070181048A1 (en) | 2007-08-09 |
ES2302983T3 (en) | 2008-08-01 |
DE60319748D1 (en) | 2008-04-24 |
CN100415071C (en) | 2008-09-03 |
CA2535027A1 (en) | 2005-03-03 |
CN1819762A (en) | 2006-08-16 |
US7413387B2 (en) | 2008-08-19 |
EP1657974A1 (en) | 2006-05-24 |
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