CA2432254A1 - Fertilizer knife - Google Patents
Fertilizer knife Download PDFInfo
- Publication number
- CA2432254A1 CA2432254A1 CA 2432254 CA2432254A CA2432254A1 CA 2432254 A1 CA2432254 A1 CA 2432254A1 CA 2432254 CA2432254 CA 2432254 CA 2432254 A CA2432254 A CA 2432254A CA 2432254 A1 CA2432254 A1 CA 2432254A1
- Authority
- CA
- Canada
- Prior art keywords
- implement
- knife
- dispensing tube
- fertilizer
- shank
- 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.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/02—Special arrangements for delivering the liquid directly into the soil
- A01C23/023—Special arrangements for delivering the liquid directly into the soil for liquid or gas fertilisers
- A01C23/024—Special arrangements for delivering the liquid directly into the soil for liquid or gas fertilisers for ammonia
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Environmental Sciences (AREA)
- Fertilizing (AREA)
Abstract
A fertilizer knife is supported on an agricultural implement shank including a fertilizer tube extending alongside the implement shank for delivering anhydrous ammonia therethrough. The knife includes a dispensing tube supported on the knife body at a trailing edge of the knife body for communication with the fertilizer tube to dispense fertilizer therethrough. The dispensing tube is formed of a material having a low heat conductivity, for example an insulating material such as plastic, to prevent freeze up of damp soil on the fertilizer knife when anhydrous ammonia is dispensed through the dispensing tube into a furrow formed in the ground by the knife.
Description
FERTILIZER KNIFE
i=IEL~ OF THE INVENTION
The present invention relates to a fertilizer knife for an agricultural implement for dispensing anhydrous ammonia into a furrow formed by the knife.
BACKGROUND
It is common practice to make use of anhydrous ammonia as a fertilizer in agriculture. A common method of injecting the anhydrous ammonia into the ground involves pulling a furrowing element through the ground to produce a furrow within which the anhydrous ammonia is deposited as a liquid. The furrowing element typically includes a steel body which includes a metal tube extending along a trailing side thereof which is welded onto the body for depositing the fertilizer therethrough directly behind the body. In order to remain as a liquid, anhydrous ammonia is typically stored under very high pressures. The anhydrous ammonia typically evaporates quickly upon exiting the tube of the furrowing element which causes the tube and surrounding body of the furrowing element to be rapidly cooled so that the surrounding moist earth readily forms a frozen clump surrounding the furrowing element which decreases the effectiveness of the furrowing element at cutting through the ground.
SUMMARY
According to one aspect of the present invention there is provided a fertilizer knife for use with an agricultural implement having at least one implement shank supported for movement across the ground, said at least one implement shank including a fertilizer tube extending alongside the implement shank for delivering fertilizer therethrough, the knife comprising:
a knife body including a shank mount for mounting on said at least one implement shank of the implement and a leading edge for projecting downward into the ground for creating a furrow in the ground when 'the implement is pulled across the ground; and a dispensing tube supported on the knife body at a trailing edge of the knife body for communication with the fertilizer tube to dispense fertilizer therethrough;
the dispensing tube being formed of a material having a low heat conductivity.
The use of a dispensing tube formed of a material having a low heat conductivity reduces the cooling effect of the compressed liquid anhydrous ammonia has on the adjacent knife body to prevent the moist ground surrounding the knife in use from being frozen into a clump surrounding the knife.
According to a second aspect of the present invention there is provided an agricultural implement having at least one implement shank supported for movement across the ground, said at least one implement shank including a fertilizer tube extending alongside the implement shank for delivering fertilizer therethrough and a fertilizer knife supported thereon, the knife comprising:
a knife body including a shank mount for mounting on said at least one implement shank and a leading edge for projecting downward into the ground for creating a furrow in the ground when the implement is pulled across the ground; and a dispensing tube supported on the knife body at a trailing edge of the knife body for communication with the fertilizer tube to dispense fertilizer therethrough;
the dispensing tube being formed of a material having a low heat conductivity.
According to a further aspect of the prey>ent invention there is provided a method of dispensing anhydrous ammonia into the around comprising:
i=IEL~ OF THE INVENTION
The present invention relates to a fertilizer knife for an agricultural implement for dispensing anhydrous ammonia into a furrow formed by the knife.
BACKGROUND
It is common practice to make use of anhydrous ammonia as a fertilizer in agriculture. A common method of injecting the anhydrous ammonia into the ground involves pulling a furrowing element through the ground to produce a furrow within which the anhydrous ammonia is deposited as a liquid. The furrowing element typically includes a steel body which includes a metal tube extending along a trailing side thereof which is welded onto the body for depositing the fertilizer therethrough directly behind the body. In order to remain as a liquid, anhydrous ammonia is typically stored under very high pressures. The anhydrous ammonia typically evaporates quickly upon exiting the tube of the furrowing element which causes the tube and surrounding body of the furrowing element to be rapidly cooled so that the surrounding moist earth readily forms a frozen clump surrounding the furrowing element which decreases the effectiveness of the furrowing element at cutting through the ground.
SUMMARY
According to one aspect of the present invention there is provided a fertilizer knife for use with an agricultural implement having at least one implement shank supported for movement across the ground, said at least one implement shank including a fertilizer tube extending alongside the implement shank for delivering fertilizer therethrough, the knife comprising:
a knife body including a shank mount for mounting on said at least one implement shank of the implement and a leading edge for projecting downward into the ground for creating a furrow in the ground when 'the implement is pulled across the ground; and a dispensing tube supported on the knife body at a trailing edge of the knife body for communication with the fertilizer tube to dispense fertilizer therethrough;
the dispensing tube being formed of a material having a low heat conductivity.
The use of a dispensing tube formed of a material having a low heat conductivity reduces the cooling effect of the compressed liquid anhydrous ammonia has on the adjacent knife body to prevent the moist ground surrounding the knife in use from being frozen into a clump surrounding the knife.
According to a second aspect of the present invention there is provided an agricultural implement having at least one implement shank supported for movement across the ground, said at least one implement shank including a fertilizer tube extending alongside the implement shank for delivering fertilizer therethrough and a fertilizer knife supported thereon, the knife comprising:
a knife body including a shank mount for mounting on said at least one implement shank and a leading edge for projecting downward into the ground for creating a furrow in the ground when the implement is pulled across the ground; and a dispensing tube supported on the knife body at a trailing edge of the knife body for communication with the fertilizer tube to dispense fertilizer therethrough;
the dispensing tube being formed of a material having a low heat conductivity.
According to a further aspect of the prey>ent invention there is provided a method of dispensing anhydrous ammonia into the around comprising:
providing an agricultural implement having at least one implement shank supported for movement across the ground, said at least one implement shank including a fertilizer tube extending alongside the implement shank for delivering anhydrous ammonia therethrough;
supporting a fertilizer knife on said at least one implement shank, the knife having a knife body with a leading edge for projecting downward into the ground;
supporting a dispensing tube on the knife body of said fertilizer knife at a trailing edge of the knife body for communication with the fertilizer tube;
the dispensing tube being formed of a material having a low heat conductivity;
pulling the implement across the ground to create a furrow; and dispensing anhydrous ammonia through the dispensing tube as the implement is pulled across the ground.
Preferably, the dispensing tube is formed of a material having a heat conductivity which is lower than a heat conductivity of steel, for example an insulating plastic material.
One or more brackets may be supportE~d on both the knife body and the shank mount which slidably receives the dispensing tube therethrough.
The dispensing tube preferably includes a tapered opening.
BRIEF DESCRIPTION OF THE DRAVIfINGS
In the accompanying drawings, which illustrate an exemplary embodiment of the present invention:
Figure 1 is a schematic view of an implement for injecting anhydrous ammonia into the ground.
Figure 2 is a side elevational view of one of the knives of the implement according to Figure 1.
-4_ Figure 3 is a sectional view along the line 3-3 of Figure 2.
DETAILED DESCRIPTION
Referring to the accompanying drawing;;, there is illustrated a fertilizer knife generally indicated by reference numeral 10. Tlne knife 10 is particularly useful for injecting anhydrous ammonia into the ground in agricultural applications.
The knife 10 is typically supported on an implement 12 of the type including a frame 14 supported on wheels 16 for being towed across the ground.
A
plurality of impiement shanks 18 are provided which project downwardly and forwardly into the direction of travel from the frame 14 towards the ground. A
fertilizer tank 20 is provided which is supported on the frame 14 and is suitably arranged for containing anhydrous ammonia therein under high pressure.
A fluid delivery system (not shown) is provided for communication between the tank 20 and a plurality of delivery tubes 22 associated with the shanks 18 respectively. Each shank 18 accordingly includes one of the delivery tubes extending there alongside terminating adjacent the free end of the shank.
The knife includes a knife body 24 inc~iuding a shank mount formed adjacent a top end thereof in the form of a set of apertures 26 which receive suitable fasteners in the form of bolts therethrough for securement to the respective shank 18. The knife body tapers to become narrower adjacent a bottom edge with a sharpened narrower leading edge 28 suitably arranged for cutting through the ground to produce a furrow when the implement is towed across the ground in use.
A bottom free end 30 of the knife body is inclined with respect to the leading edge so as to lie generally parallel to the ground when the leading edge extends upwardly and rearwardly.
Knife brackets 32 are mounted on the trailing edge of the l~cnife body at spaced positions therealong, each in the form of a strap in a generally U-shaped configuration which is welded to the knife body at each end to respective sides of the body to define an aperture 34 between the bracket and the trailing edge of the knife body in the mounted position of the bracket on the knife. The apertures 34 are thus positioned rearwardly of the knife body for slidably receiving a dispensing tube 36 into the apertures 34 of each bracket to prevent sagging of the dispensing tube relative to the knife body.
The dispensing tube 36 comprises a plastic tube having an outer diameter of 3/8 of an inch. The plastic material forming the dispensing tube 36 is an insulator having a low heat conductivity which is much lower than the heat conductivity of the steel forming the knife body 24. A bottom end of the dispensing tube 36 is cut at an incline which matches the incline of the bottom end 30 of the knife body relative to the longitudinal direction thereof so that the bottom end of the dispensing tube similarly lies parallel to the ground.
A shank bracket 40 is provided which includes a base member with mounting apertures arranged for bolting by the fasteners securing the knife body to the shank 18 to permit the shank bracket 40 to be selectively separable or mounted on without requiring welding operations. The shank bracket also includes an aperture 42 formed therein which slidably receives an upper portion of the dispensing tube 36 to position the dispensing tube rearwardly of the knife body 24 and the respective shank 18 upon which it is supported.
In use the implement is towed across the ground in the conventional manner while anhydrous ammonia is dispensed through the delivery tubes 22 to the respective dispensing tubes 36 of the knives 10 on the implement. The delivery tubes 22 on the implement conventionally have an outer diameter of '%2 of an inch such that an interior diameter of the delivery tubes 22 snugly receives the respective dispensing tubes 36 therein. The plastic material and suitable brackets for _g_ securement of the plastic material of the dispensing tube onto the knife prevents conduction of heat being drawn away from the knife body to the anhydrous ammonia flowing through the dispensing tube 36 and accordingly the plastic material of the dispensing tube prevents considerable freeze up of moist ground onto the knife body ~ in use.
While one embodiment of the present irwention has been described in the foregoing, it is to be understood that other embodiments are possible within the scope of the invention. The invention is to be considered limited solely by the scope of the appended claims.
supporting a fertilizer knife on said at least one implement shank, the knife having a knife body with a leading edge for projecting downward into the ground;
supporting a dispensing tube on the knife body of said fertilizer knife at a trailing edge of the knife body for communication with the fertilizer tube;
the dispensing tube being formed of a material having a low heat conductivity;
pulling the implement across the ground to create a furrow; and dispensing anhydrous ammonia through the dispensing tube as the implement is pulled across the ground.
Preferably, the dispensing tube is formed of a material having a heat conductivity which is lower than a heat conductivity of steel, for example an insulating plastic material.
One or more brackets may be supportE~d on both the knife body and the shank mount which slidably receives the dispensing tube therethrough.
The dispensing tube preferably includes a tapered opening.
BRIEF DESCRIPTION OF THE DRAVIfINGS
In the accompanying drawings, which illustrate an exemplary embodiment of the present invention:
Figure 1 is a schematic view of an implement for injecting anhydrous ammonia into the ground.
Figure 2 is a side elevational view of one of the knives of the implement according to Figure 1.
-4_ Figure 3 is a sectional view along the line 3-3 of Figure 2.
DETAILED DESCRIPTION
Referring to the accompanying drawing;;, there is illustrated a fertilizer knife generally indicated by reference numeral 10. Tlne knife 10 is particularly useful for injecting anhydrous ammonia into the ground in agricultural applications.
The knife 10 is typically supported on an implement 12 of the type including a frame 14 supported on wheels 16 for being towed across the ground.
A
plurality of impiement shanks 18 are provided which project downwardly and forwardly into the direction of travel from the frame 14 towards the ground. A
fertilizer tank 20 is provided which is supported on the frame 14 and is suitably arranged for containing anhydrous ammonia therein under high pressure.
A fluid delivery system (not shown) is provided for communication between the tank 20 and a plurality of delivery tubes 22 associated with the shanks 18 respectively. Each shank 18 accordingly includes one of the delivery tubes extending there alongside terminating adjacent the free end of the shank.
The knife includes a knife body 24 inc~iuding a shank mount formed adjacent a top end thereof in the form of a set of apertures 26 which receive suitable fasteners in the form of bolts therethrough for securement to the respective shank 18. The knife body tapers to become narrower adjacent a bottom edge with a sharpened narrower leading edge 28 suitably arranged for cutting through the ground to produce a furrow when the implement is towed across the ground in use.
A bottom free end 30 of the knife body is inclined with respect to the leading edge so as to lie generally parallel to the ground when the leading edge extends upwardly and rearwardly.
Knife brackets 32 are mounted on the trailing edge of the l~cnife body at spaced positions therealong, each in the form of a strap in a generally U-shaped configuration which is welded to the knife body at each end to respective sides of the body to define an aperture 34 between the bracket and the trailing edge of the knife body in the mounted position of the bracket on the knife. The apertures 34 are thus positioned rearwardly of the knife body for slidably receiving a dispensing tube 36 into the apertures 34 of each bracket to prevent sagging of the dispensing tube relative to the knife body.
The dispensing tube 36 comprises a plastic tube having an outer diameter of 3/8 of an inch. The plastic material forming the dispensing tube 36 is an insulator having a low heat conductivity which is much lower than the heat conductivity of the steel forming the knife body 24. A bottom end of the dispensing tube 36 is cut at an incline which matches the incline of the bottom end 30 of the knife body relative to the longitudinal direction thereof so that the bottom end of the dispensing tube similarly lies parallel to the ground.
A shank bracket 40 is provided which includes a base member with mounting apertures arranged for bolting by the fasteners securing the knife body to the shank 18 to permit the shank bracket 40 to be selectively separable or mounted on without requiring welding operations. The shank bracket also includes an aperture 42 formed therein which slidably receives an upper portion of the dispensing tube 36 to position the dispensing tube rearwardly of the knife body 24 and the respective shank 18 upon which it is supported.
In use the implement is towed across the ground in the conventional manner while anhydrous ammonia is dispensed through the delivery tubes 22 to the respective dispensing tubes 36 of the knives 10 on the implement. The delivery tubes 22 on the implement conventionally have an outer diameter of '%2 of an inch such that an interior diameter of the delivery tubes 22 snugly receives the respective dispensing tubes 36 therein. The plastic material and suitable brackets for _g_ securement of the plastic material of the dispensing tube onto the knife prevents conduction of heat being drawn away from the knife body to the anhydrous ammonia flowing through the dispensing tube 36 and accordingly the plastic material of the dispensing tube prevents considerable freeze up of moist ground onto the knife body ~ in use.
While one embodiment of the present irwention has been described in the foregoing, it is to be understood that other embodiments are possible within the scope of the invention. The invention is to be considered limited solely by the scope of the appended claims.
Claims (22)
1. A fertilizer knife for use with an agricultural implement having at least one implement shank supported for movement across the ground, said at least one implement shank including a fertilizer tube extending alongside the implement shank for delivering fertilizer therethrough, the knife comprising:
a knife body including a shank mount for mounting on said at least one implement shank of the implement and a leading edge for projecting downward into the ground for creating a furrow in the ground when the implement is pulled across the ground; and a dispensing tube supported on the knife body at a trailing edge of the knife body for communication with the fertilizer tube to dispense fertilizer therethrough;
the dispensing tube being formed of a material having a low heat conductivity.
a knife body including a shank mount for mounting on said at least one implement shank of the implement and a leading edge for projecting downward into the ground for creating a furrow in the ground when the implement is pulled across the ground; and a dispensing tube supported on the knife body at a trailing edge of the knife body for communication with the fertilizer tube to dispense fertilizer therethrough;
the dispensing tube being formed of a material having a low heat conductivity.
2. The knife according to Claim 1 wherein the dispensing tube is formed of a material having a heat conductivity which is lower than heat conductivity of steel.
3. The knife according to Claim 1 wherein the dispensing tube is formed of a plastic material.
4. The knife according to Claim 1 wherein the dispensing tube is formed of a material which is an insulator.
5. The knife according to Claim 1 wherein there is provided a bracket supported on the knife body which slidably receives the dispensing tube therethrough.
6. The knife according to Claim 1 wherein there is provided a pair of brackets supported on the knife body at spaced positions therealong which slidably receive the dispensing tube therethrough.
7. The knife according to Claim 1 wherein there is provided a bracket supported by the shank mount which slidably receives the dispensing tube therethrough.
8. The knife according to Claim 1 wherein the dispensing tube includes a tapered opening.
9. An agricultural implement having at least one implement shank supported for movement across the ground, said at least one implement shank including a fertilizer tube extending alongside the implement shank for delivering fertilizer therethrough and a fertilizer knife supported thereon, the knife comprising:
a knife body including a shank mount for mounting on said at least one implement shank and a leading edge for projecting downward into the ground for creating a furrow in the ground when the implement is pulled across the ground; and a dispensing tube supported on the knife body at a trailing edge of the knife body for communication with the fertilizer tube to dispense fertilizer therethrough;
the dispensing tube being formed of a material having a low heat conductivity.
a knife body including a shank mount for mounting on said at least one implement shank and a leading edge for projecting downward into the ground for creating a furrow in the ground when the implement is pulled across the ground; and a dispensing tube supported on the knife body at a trailing edge of the knife body for communication with the fertilizer tube to dispense fertilizer therethrough;
the dispensing tube being formed of a material having a low heat conductivity.
10. The implement according to Claim 9 wherein the dispensing tube is formed of a material having a heat conductivity which is lower than heat conductivity of steel.
11. The implement according to Claim 9 wherein the dispensing tube is formed of a plastic material.
12. The implement according to Claim 9 wherein the dispensing tube is formed of a material which is an insulator.
13. The implement according to Claim 9 wherein there is provided a bracket supported on the knife body which slidably receives the dispensing tube therethrough.
14. The implement according to Claim 9 wherein there is provided a bracket supported by the shank mount which slidably receives the dispensing tube therethrough.
15. The implement according to Claim 9 wherein the dispensing tube includes a tapered opening.
16. A method of dispensing anhydrous ammonia into the ground comprising:
providing an agricultural implement having at least one implement shank supported for movement across the ground, said at least one implement shank including a fertilizer tube extending alongside the implement shank for delivering anhydrous ammonia therethrough;
supporting a fertilizer knife on said at least one implement shank, the knife having a knife body with a leading edge for projecting downward into the ground;
supporting a dispensing tube on the knife body of said fertilizer knife at a trailing edge of the knife body for communication with the fertilizer tube;
the dispensing tube being formed of a material having a low heat conductivity;
pulling the implement across the ground to create a furrow; and dispensing anhydrous ammonia through the dispensing tube as the implement is pulled across the ground.
providing an agricultural implement having at least one implement shank supported for movement across the ground, said at least one implement shank including a fertilizer tube extending alongside the implement shank for delivering anhydrous ammonia therethrough;
supporting a fertilizer knife on said at least one implement shank, the knife having a knife body with a leading edge for projecting downward into the ground;
supporting a dispensing tube on the knife body of said fertilizer knife at a trailing edge of the knife body for communication with the fertilizer tube;
the dispensing tube being formed of a material having a low heat conductivity;
pulling the implement across the ground to create a furrow; and dispensing anhydrous ammonia through the dispensing tube as the implement is pulled across the ground.
17. The method according to Claim 16 wherein the dispensing tube is formed of a material having a heat conductivity which is lower than a heat conductivity of steel.
18. The method according to Claim 16 wherein the dispensing tube is formed of a plastic material.
19. The method according to Claim 16 wherein the dispensing tube is formed of an insulator material.
20. The method according to Claim 16 including providing a bracket supported on the knife body which slidably receives the dispensing tube therethrough.
21. The method according to Claim 10 including providing a bracket supported by the shank mount which slidably receives the dispensing tube therethrough.
22. The method according to Claim 16 wherein the dispensing tube includes a tapered opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2432254 CA2432254A1 (en) | 2003-06-11 | 2003-06-11 | Fertilizer knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2432254 CA2432254A1 (en) | 2003-06-11 | 2003-06-11 | Fertilizer knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2432254A1 true CA2432254A1 (en) | 2004-12-11 |
Family
ID=33557624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2432254 Abandoned CA2432254A1 (en) | 2003-06-11 | 2003-06-11 | Fertilizer knife |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2432254A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109068585A (en) * | 2016-04-18 | 2018-12-21 | 精密种植有限责任公司 | The equipment and administration unit that component is applied at least one flexible or pivot for the agriculture plants spot application in farmland |
-
2003
- 2003-06-11 CA CA 2432254 patent/CA2432254A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109068585A (en) * | 2016-04-18 | 2018-12-21 | 精密种植有限责任公司 | The equipment and administration unit that component is applied at least one flexible or pivot for the agriculture plants spot application in farmland |
| CN109068585B (en) * | 2016-04-18 | 2022-07-01 | 精密种植有限责任公司 | Implement and application unit for the site-specific application of agricultural plants in agricultural fields, having at least one flexible or pivotable application member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |