WO2009110845A1 - Combined seeder and fertilizer. - Google Patents

Combined seeder and fertilizer. Download PDF

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Publication number
WO2009110845A1
WO2009110845A1 PCT/SE2009/050225 SE2009050225W WO2009110845A1 WO 2009110845 A1 WO2009110845 A1 WO 2009110845A1 SE 2009050225 W SE2009050225 W SE 2009050225W WO 2009110845 A1 WO2009110845 A1 WO 2009110845A1
Authority
WO
WIPO (PCT)
Prior art keywords
connection duct
air
outlet
seed
flow
Prior art date
Application number
PCT/SE2009/050225
Other languages
French (fr)
Inventor
Crister Stark
Original Assignee
Väderstad-Verken Aktiebolag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Väderstad-Verken Aktiebolag filed Critical Väderstad-Verken Aktiebolag
Priority to EP09717114A priority Critical patent/EP2247173A1/en
Publication of WO2009110845A1 publication Critical patent/WO2009110845A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C7/00—Sowing
    • A01C7/06—Seeders combined with fertilising apparatus
    • 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

Definitions

  • the invention refers to a device at seed drill according to the pre-characterising portion of claim 1.
  • combi seed drills Today there are a multitude of so-called combi seed drills on the market. With a combi seed drill, seed can be drilled and fertiliser distributed simultaneously. One way of designing these machines is with the help of an air flow transporting seeds from a seed container via a distribution device to a number of seed outlets. In the same way, fertiliser is transported from a fertiliser container to a number of fertiliser outlets.
  • the seed is fed from the seed container via a dosing device to an ejector in the air flow pipe.
  • a dosing device to an ejector in the air flow pipe.
  • the object of the invention is to provide a device at seed drills where the drill can easily be converted between combined seed drilling and fertiliser distribution and only seed drilling where the above-described disadvantages are avoided.
  • the aim of the invention is achieved through a device according to claim 1. Co-connecting the flow from both containers to the same distributor device and releasing excess air pressure before the junction point allows a reduced air flow to the distributor device, which decreases the risk of high counter-pressure while simultaneously retaining a high air flow through the ejector which thereby maintains full function.
  • Claims 2 and 3 describe solutions that allow easy conversion between combined drilling and fertiliser distribution and drilling alone. At combined drilling and fertiliser distribution it is either not necessary and often also neither desirable since both distributor devices are used and a greater total air flow is required.
  • Claims 4 and 5 describe advantageous valve solutions for achieving simple conversion of the air flows with good function.
  • a device according to claim 6 allows only one fan to be used. This is favourable from a cost perspective and allows the fan to be optimised for one or only a few different rev counts.
  • Figure 1 shows schematically a side view of a seed drill's feeding system.
  • Figure 2 shows a view from above of parts of the feeding system.
  • Figure 3 shows an enlarged view from above of a part of the feeding system set up for combined drilling and fertiliser distribution.
  • Figure 4 shows an enlarged top view of a part of the feeding system set up for drilling alone.
  • Figure 1 shows schematically a side view of a feeding out device of a seed drill.
  • the seed drill comprises a first container 2 for seed and a second container 4 for fertiliser. Purely practically, these can be designed as two separate containers or a joint container with two chambers separated by a dividing wall.
  • the first container 2 is connected to a first distribution device 10 in the form of a distributor head via a first connection duct 6, here in the form of a pipe or hose, or alternatively in sections of both pipes and hoses (see also figure 2).
  • the distributor device 10 is here designed as a distributor head with a number of outlets 14. Each outlet 14 is in its turn connected to its own seed outlet (not shown in fig.), preferably at a seed coulter, via a hose or the like (not shown in fig.).
  • the second container 4 is in a similar way connected to a second distribution device 12 in the form of a distributor head via a second connection duct 8.
  • a second distribution device 12 in the form of a distributor head via a second connection duct 8.
  • Each one of the outlets 14 of the second distributor head 12 is in turn in a similar way connected to a fertiliser outlet (not shown in fig.), preferably at a fertiliser coulter, via a hose or the like.
  • connection ducts 6, 8 are connected to at least one air flow source adapted to create an air flow for transport of seed and/or fertiliser from the containers 2, 4 to the distribution devices 10, 12. Both connection ducts 6, 8 are preferably connected to one and the same air flow source 24 in the form of a fan.
  • the first container 2 is connected to the first connection duct 6 via a dosing device 17 and an ejector 20, while the second container 4 in a similar way is connected to the second connection duct 8 via a dosing device 18 and an ejector 22.
  • the dosing devices 17, 18 as well as the fan 24 can be hydraulically or electrically driven.
  • a third connection duct 16 is provided with an inlet 70 from the second connection duct 8 and an outlet 72 to the first connection duct 6.
  • a conversion member 50 in the form of a valve is arranged at the second connection duct 8. As shown by figures 3 and 4, the valve 50 has an inlet 52 from and a first outlet 54 to the second connection duct 8. It has in addition a second outlet 56 to the third connection duct 16.
  • the valve 50 in addition contains a throttle valve 58 which in a first end position only permits flow between the inlet 52 and the first outlet 54 which thus connects the second container 4 with the second distributor head 12 and in a second end position only permits flow between the inlet 52 and the second outlet 56 which thus connects the second container 4 with the first distributor head 10.
  • the throttle valve is suitably designed so that it can be manipulated with a handle 60 or the like, which in a known way is influenced towards the respective end position with the aid of at least one not shown spring member.
  • valve 58 is shown for increased clarity. However, it should be pointed out that purely practically the throttle valve is arranged inside the valve.
  • the valve 50 When the farmer wishes to combine seed drilling and fertiliser distribution he sets the valve 50 in the position shown in figure 3. Seed is hereby transported from the first container 2 to the first distributor head 10 while fertiliser is transported from the second container 4 to the second distributor head 12.
  • Figure 4 shows a first air outlet 80 arranged on the first connection duct 6 upstream from its junction with the third connection duct 16.
  • a second air outlet 82 is arranged on the second connection duct 8 upstream from the valve 50 and thereby its junction with the third connection duct 16.
  • Air outlets 80, 82 are adapted to permit flow of air but prevent flow of seed and/or fertiliser, and are comprised suitably of a removable grating or mosquito netting- like device that covers an opening in the connection duct 6. The device is set in place here with the aid of hooks 86 and a hasp 84.
  • cover lids 90, 92 that prevent outflow of air.
  • cover lids 90, 92 that prevent outflow of air.
  • This arrangement permits essentially the same air flow through the ejectors 20, 22 and the first distributor head 10 regardless of whether seed is fed from one or two containers.
  • the grating-like device is fixed and it can be covered by a removable, turnable or slidable cover lid.
  • a removable, turnable or slidable cover lid is provided.
  • making the grating-like device removable simplifies maintenance since there is a risk of fertiliser and seed lodging in it which can lead to impaired function.
  • every connection duct is connected with a distributor head.
  • distribution in several stages to a plurality of distributor heads or other distributor devices can occur.
  • the conversion member can adopt several forms, for example through slidable or turnable throttle valves in the third connection duct and the second connection duct downstream from the third connection duct.

Abstract

Device at seed drill comprising two containers connected to a respective distribution device (10, 12) via a respective connection duct (6, 8) A third connection duct (16) is arranged with an inlet (70) from the second connection duct (8) and an outlet (72) to the first connection duct (6), where at least one conversion member (50) is adapted to direct the air flow from the second connection duct (8) to one of the first or second distribution device (10, 12) and prevent flow from the second connection duct (8) to the other of the first or second distribution device (10, 12). An air outlet (80, 82) is arranged on the respective connection duct (6, 8) upstream from its junctions with the third connection duct (16), where the air outlets (80, 82) are adapted to permit flow of air but prevent flow of seed and/or fertiliser.

Description

Combined seeder and fertilizer
The invention refers to a device at seed drill according to the pre-characterising portion of claim 1.
Background
Today there are a multitude of so-called combi seed drills on the market. With a combi seed drill, seed can be drilled and fertiliser distributed simultaneously. One way of designing these machines is with the help of an air flow transporting seeds from a seed container via a distribution device to a number of seed outlets. In the same way, fertiliser is transported from a fertiliser container to a number of fertiliser outlets.
The farmer sometimes wants to operate the machine with seed alone. It is then desirable to place seed in the fertiliser container as well in order to decrease the number of refills needed. It is then common for the flow from the fertiliser container to be redirected to the seed distribution device for seed. Such a solution is shown in CA 2 219 230.
At some seed drills the seed is fed from the seed container via a dosing device to an ejector in the air flow pipe. With a solution according to the above certain problems can arise. When the air flow from two pipes is connected to the same distribution device the counter-pressure can cause the function of the ejector to be greatly impaired or completely eliminated. If the air flow between the pipes is instead decreased to avoid the counter-pressure problem, there is a risk of the flow not being able to transport the seed to the seed distribution device, or of the flow not being sufficient for function of the ejector.
Object of the invention
The object of the invention is to provide a device at seed drills where the drill can easily be converted between combined seed drilling and fertiliser distribution and only seed drilling where the above-described disadvantages are avoided.
Summary of the invention
The aim of the invention is achieved through a device according to claim 1. Co-connecting the flow from both containers to the same distributor device and releasing excess air pressure before the junction point allows a reduced air flow to the distributor device, which decreases the risk of high counter-pressure while simultaneously retaining a high air flow through the ejector which thereby maintains full function.
Claims 2 and 3 describe solutions that allow easy conversion between combined drilling and fertiliser distribution and drilling alone. At combined drilling and fertiliser distribution it is either not necessary and often also neither desirable since both distributor devices are used and a greater total air flow is required.
Claims 4 and 5 describe advantageous valve solutions for achieving simple conversion of the air flows with good function.
A device according to claim 6 allows only one fan to be used. This is favourable from a cost perspective and allows the fan to be optimised for one or only a few different rev counts.
Drawing summary
Figure 1 shows schematically a side view of a seed drill's feeding system. Figure 2 shows a view from above of parts of the feeding system. Figure 3 shows an enlarged view from above of a part of the feeding system set up for combined drilling and fertiliser distribution.
Figure 4 shows an enlarged top view of a part of the feeding system set up for drilling alone.
Detailed description of an embodiment
Figure 1 shows schematically a side view of a feeding out device of a seed drill. The seed drill comprises a first container 2 for seed and a second container 4 for fertiliser. Purely practically, these can be designed as two separate containers or a joint container with two chambers separated by a dividing wall.
The first container 2 is connected to a first distribution device 10 in the form of a distributor head via a first connection duct 6, here in the form of a pipe or hose, or alternatively in sections of both pipes and hoses (see also figure 2). The distributor device 10 is here designed as a distributor head with a number of outlets 14. Each outlet 14 is in its turn connected to its own seed outlet (not shown in fig.), preferably at a seed coulter, via a hose or the like (not shown in fig.).
The second container 4 is in a similar way connected to a second distribution device 12 in the form of a distributor head via a second connection duct 8. Each one of the outlets 14 of the second distributor head 12 is in turn in a similar way connected to a fertiliser outlet (not shown in fig.), preferably at a fertiliser coulter, via a hose or the like.
The first and second connection ducts 6, 8 are connected to at least one air flow source adapted to create an air flow for transport of seed and/or fertiliser from the containers 2, 4 to the distribution devices 10, 12. Both connection ducts 6, 8 are preferably connected to one and the same air flow source 24 in the form of a fan.
The first container 2 is connected to the first connection duct 6 via a dosing device 17 and an ejector 20, while the second container 4 in a similar way is connected to the second connection duct 8 via a dosing device 18 and an ejector 22.
The dosing devices 17, 18 as well as the fan 24 can be hydraulically or electrically driven.
A third connection duct 16 is provided with an inlet 70 from the second connection duct 8 and an outlet 72 to the first connection duct 6. A conversion member 50 in the form of a valve is arranged at the second connection duct 8. As shown by figures 3 and 4, the valve 50 has an inlet 52 from and a first outlet 54 to the second connection duct 8. It has in addition a second outlet 56 to the third connection duct 16. The valve 50 in addition contains a throttle valve 58 which in a first end position only permits flow between the inlet 52 and the first outlet 54 which thus connects the second container 4 with the second distributor head 12 and in a second end position only permits flow between the inlet 52 and the second outlet 56 which thus connects the second container 4 with the first distributor head 10. The throttle valve is suitably designed so that it can be manipulated with a handle 60 or the like, which in a known way is influenced towards the respective end position with the aid of at least one not shown spring member.
In figures 3 and 4 the throttle valve 58 is shown for increased clarity. However, it should be pointed out that purely practically the throttle valve is arranged inside the valve. When the farmer wishes to combine seed drilling and fertiliser distribution he sets the valve 50 in the position shown in figure 3. Seed is hereby transported from the first container 2 to the first distributor head 10 while fertiliser is transported from the second container 4 to the second distributor head 12.
When the farmer uses the seed drill for drilling alone he fills both containers 2, 4 with seed and sets the valve 50 in the position shown in figure 4. Seed is hereby transported from both containers 2, 4 to the first distributor head 10.
Figure 4 shows a first air outlet 80 arranged on the first connection duct 6 upstream from its junction with the third connection duct 16. A second air outlet 82 is arranged on the second connection duct 8 upstream from the valve 50 and thereby its junction with the third connection duct 16. Air outlets 80, 82 are adapted to permit flow of air but prevent flow of seed and/or fertiliser, and are comprised suitably of a removable grating or mosquito netting- like device that covers an opening in the connection duct 6. The device is set in place here with the aid of hooks 86 and a hasp 84.
In figure 3 the grating-like device has been replaced with cover lids 90, 92 that prevent outflow of air. These cover lids are also set in place with the aid of hooks 86 and hasps 84.
This arrangement permits essentially the same air flow through the ejectors 20, 22 and the first distributor head 10 regardless of whether seed is fed from one or two containers.
According to an alternative embodiment the grating-like device is fixed and it can be covered by a removable, turnable or slidable cover lid. However making the grating-like device removable simplifies maintenance since there is a risk of fertiliser and seed lodging in it which can lead to impaired function.
The invention can be varied within the framework of the claims. In the exemplified embodiment every connection duct is connected with a distributor head. In alternative embodiments distribution in several stages to a plurality of distributor heads or other distributor devices can occur. In addition, the conversion member can adopt several forms, for example through slidable or turnable throttle valves in the third connection duct and the second connection duct downstream from the third connection duct.

Claims

Claims
1. Device at seed drill comprising a first container (2) connected to a first distribution device (10) via a first connection duct (6), and a second container (4) connected to a second distribution device (12) via a second connection duct (8), where the first and second connection ducts (6, 8) are connected to at least one air flow source (24) adapted to create an air flow for transport of seed and/or fertiliser from the containers (2, 4) to the distribution devices (10, 12), where each container (2, 4) is connected with the respective connection duct (6, 8) via a respective dosing device (17, 18) and an ejector (20, 22), where a third connection duct (16) is arranged with an inlet (70) from the second connection duct (8) and an outlet (72) to the first connection duct (6), and where at least one conversion member (50) is adapted to guide the air flow from the second connection duct (8) to one of the first or second distribution device (10, 12) and prevent flow from the second connection duct (8) to the other of the first or second distribution device (10, 12), characterised in that a first air outlet (80) is arranged on the first connection duct (6) upstream from its junction with the third connection duct (16), and that a second air outlet (82) is arranged on the second connection duct (8) upstream from its junction with the third connection duct (16), the air outlets (80, 82) being adapted to permit flow of air but prevent flow of seed and/or fertiliser.
2. Device according to claim 1, characterised m that the air outlet (80, 82) is comprised of a removable grating-like device that covers an opening in the connection duct.
3. Device according to claim 1 or 2, characterised in that the air outlet also can be prevented emission of air through an applied cover lid (90, 92) or the like.
4. Device according to any one of the preceding claims, characterised in that the conversion member (50) consists of a valve with an inlet (52) from the second connection duct (8), a first outlet (54) to the second connection duct (8), a second outlet (56) to the third connection duct (16), and where a throttle valve (58) in a first end position only permits flow between the inlet (52) and the first outlet (54) and in a second end position only permits flow between the inlet (52) and the second outlet (56).
5. Device according to claim 4, characterised in that the throttle valve is influenced towards the respective end position with the aid of at least one spring member.
6. Device according to any one of the preceding claims, characterised in that the first and second connection ducts (6, 8) are connected with one and the same air flow source (24), which air flow source (24) is comprised of a fan.
PCT/SE2009/050225 2008-03-03 2009-03-02 Combined seeder and fertilizer. WO2009110845A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09717114A EP2247173A1 (en) 2008-03-03 2009-03-02 Combined seeder and fertilizer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0800505-0 2008-03-03
SE0800505A SE531212C2 (en) 2008-03-03 2008-03-03 Seed drill device

Publications (1)

Publication Number Publication Date
WO2009110845A1 true WO2009110845A1 (en) 2009-09-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2009/050225 WO2009110845A1 (en) 2008-03-03 2009-03-02 Combined seeder and fertilizer.

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EP (1) EP2247173A1 (en)
SE (1) SE531212C2 (en)
WO (1) WO2009110845A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8770120B2 (en) 2011-05-24 2014-07-08 Cnh Industrial Canada, Ltd. Method and apparatus for distributing seed from a central source to a plurality of seed metering units of an agricultural seeding machine
US9686907B2 (en) 2012-01-09 2017-06-27 Cnh Industrial Canada, Ltd. Rotary flow divider assembly for agricultural product distribution system
ES2720578A1 (en) * 2018-01-22 2019-07-23 Aguirre Maqu Agricola S L SEEDING TEAM (Machine-translation by Google Translate, not legally binding)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964639A (en) * 1975-02-05 1976-06-22 International Harvester Company Seed tube diffuser for a pneumatic seed planter
CA1313795C (en) * 1989-04-13 1993-02-23 Gerard F. Bourgault Granular herbicide applicator
CA2219230A1 (en) * 1997-10-23 1999-04-23 Wayne A. Simon Switching device for dual feed air seeder
US6325004B1 (en) * 2000-05-04 2001-12-04 Boyd Stanley Smith Diverter for use with a double shoot air seeding system
DE202004002923U1 (en) * 2004-02-23 2004-05-06 Horsch Maschinen Gmbh Pneumatically operating distribution machine for granular material has at least one air outlet on inner radius of curved section of feed line to distributor and in region of direction change in feed line

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964639A (en) * 1975-02-05 1976-06-22 International Harvester Company Seed tube diffuser for a pneumatic seed planter
CA1313795C (en) * 1989-04-13 1993-02-23 Gerard F. Bourgault Granular herbicide applicator
CA2219230A1 (en) * 1997-10-23 1999-04-23 Wayne A. Simon Switching device for dual feed air seeder
US6325004B1 (en) * 2000-05-04 2001-12-04 Boyd Stanley Smith Diverter for use with a double shoot air seeding system
DE202004002923U1 (en) * 2004-02-23 2004-05-06 Horsch Maschinen Gmbh Pneumatically operating distribution machine for granular material has at least one air outlet on inner radius of curved section of feed line to distributor and in region of direction change in feed line

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8770120B2 (en) 2011-05-24 2014-07-08 Cnh Industrial Canada, Ltd. Method and apparatus for distributing seed from a central source to a plurality of seed metering units of an agricultural seeding machine
US9686907B2 (en) 2012-01-09 2017-06-27 Cnh Industrial Canada, Ltd. Rotary flow divider assembly for agricultural product distribution system
ES2720578A1 (en) * 2018-01-22 2019-07-23 Aguirre Maqu Agricola S L SEEDING TEAM (Machine-translation by Google Translate, not legally binding)

Also Published As

Publication number Publication date
SE0800505L (en) 2009-01-20
SE531212C2 (en) 2009-01-20
EP2247173A1 (en) 2010-11-10

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