CA1082238A - Machine for the pneumatic ejection of granular material - Google Patents
Machine for the pneumatic ejection of granular materialInfo
- Publication number
- CA1082238A CA1082238A CA301,845A CA301845A CA1082238A CA 1082238 A CA1082238 A CA 1082238A CA 301845 A CA301845 A CA 301845A CA 1082238 A CA1082238 A CA 1082238A
- Authority
- CA
- Canada
- Prior art keywords
- travel
- machine
- elbow
- baffle plates
- machine according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C15/00—Fertiliser distributors
- A01C15/04—Fertiliser distributors using blowers
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
- E01C19/20—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
- E01C19/205—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders the material being spread by means of a gaseous current
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fertilizing (AREA)
- Catching Or Destruction (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A machine for the pneumatic ejection of granular material. The machine comprises a storage tank from which the material is fed through a metering mechanism to a plurality of pipelines connected to a blower. Outer ends of the pipe-lines are each provided with an outflow aperture arranged at intervals at right angles to a direction of travel of the machine and have an almost right-angled elbow. A baffle plate, arranged obliquely in a direction opposite to the direction of travel, is situated in front of each elbow, each elbow being divided into at least two individual bends, outer ends of which are spaced apart at distances (c), as seen in the direc-tion of the pipelines.
A machine for the pneumatic ejection of granular material. The machine comprises a storage tank from which the material is fed through a metering mechanism to a plurality of pipelines connected to a blower. Outer ends of the pipe-lines are each provided with an outflow aperture arranged at intervals at right angles to a direction of travel of the machine and have an almost right-angled elbow. A baffle plate, arranged obliquely in a direction opposite to the direction of travel, is situated in front of each elbow, each elbow being divided into at least two individual bends, outer ends of which are spaced apart at distances (c), as seen in the direc-tion of the pipelines.
Description
~(~8223~
,, The invention relates to a machine for the pneumatic ejection of granular material.
A machine similar to that of the present is described in Applicant's German OS 22 38 328, February 1~, 1974, and has already been used successfully in agricultural practice.
However, the disadvantage of this machine is that it does not provide, for all kinds of granular material, uniform spreading of the material over the ground within the individual spread-paths produced by the machine, and therefore over the entire surface of the field to be spread. This disadvantage is attri-butable to the fact that, as a result of the impact of the mixture o air and material upon the baffle plates, relatively t narrow zones are spread at right angles to the direction of travel. Overlaps between the zones are so small that longitu-dinal strips are produced in which the spread-density of the material is higher or lower, especially in the case of materials of small average grain size. When seed and fertilizer are spread in this way, growth in the field is not uniform and the yield is therefore reduced.
This disadvantage cannot be eliminated by careful driving to keep the rows close together, since t~is can equalize the spread-density only along the edges of each zone. Spread-ing the field twice with only half the amount of material each time can overcome this disadvantage only if the machine is driven, during the second spread, with half the distance between the elbows. In practice, however, such accurate driving is scarcely possible, and there is therefore a danger of the second spread further increasing the lack of uniformity, at various locations over the field, Furthermore, this procedure reduces the output of the machine per unit area by half.
It is therefore the purpose of the invention to im-prove the known machine in such a manner that uniform distribution Lo8~ Z3a~
of any type of material may be achieved within each spread-pattern with the widest possible overlap at the two edges of each zone, thus making it possible to spread a larger area with uniform spread-density.
According to the invention, this purpose is achieved by utilizing a machine comprising a storage tank from which material is fed on a metering mechanism~to a plurality of pipe-lines connected to a blower. Outer ends of the pipelines are each provided with an outflow aperture arranged at intervals at right angles to the direction of travel of the machine and with an almost right-angled elbow, a baffle plate arranged obliquely ~o the direction of travel being located in front of each elbow. Each elbow is divided into at least two individual bends, the ends of which are at a distance from each other, as seen in the direction of the pipelines.
As a-result of the arrangement described in the pre-vious paragraph, the grains of material striking the baffle plates are slung out in substantially wider spread-patterns towards the ground, thus providing multiple overlapping of the spread patterns within each zone. This multiple overlapping leads to complete equaliæation and, in the case of material of fine or varying grain-size, to completely uniform spreading within the individual spread-patterns. Moreover, since the edge strips are spread with decreasing density, accurate over-lapping of successive patterns is so facilitated as to make possible uniform spreading of the material over the entire area of the field.
According to one preferred embodiment of the present invention, each elbow is preferably divided into three spearate bends. This still further improves the spreading accuracy within the individual spread-patterns. On the other hand, the separate bends may be of a width such that the machine does not become Z2~
obstructed during protracted operation even with hygroscopic types of material.
The invention also provides for the insides o~ the above to be open in the manner described in British Specification No. 1,381,922, published January 29, 1975, to Grataloup. This -has the additional advantages of being easier to manufacture and easier to clean.
If the individual bends have different radii of curva- -ture, this makes it easier to ensure that the spread-patterns deflected by the baffle plates are symmetrical, as seen in the direction of travel. It is also desirable, in this connection, for the centres of the radii of curvature of the individual arcs in each elbow to assume different positions.
According to a further preferred bmeodiment of the present invention, the elbows are arranged, in a manner known per se, at least approximately horizontally and pointing in a direction opposite to the direction oE travel,and, in each elbow, the outer end of the lowermost bend lies closest to, and the outer end of the uppermost bend lies Earthest away from, the centre of the machine. In this connection, the almost horizon-tal arrangement of the elbows, pointing in a direction opposite to the direction of travel, is already disclosed in German AS 24 52 793. These arrangements, in particular, provide the advantage that the machine can be lowered farther down, when in operation, without substantially narrowing the width of the individual spread-patterns. This lowering of the machine, and ejecting the mixture of air and material in a direction opposite to the direction of travel provides the advantage that wind has less affect upon the spreading than when the machine is higher, as well as there being a greater clearance between the ground and the elbows. Furthermore, trailer units which are not self-pro-pelled may, with these arrangements, be built advantageously low.
.
ZZ3~
Apart from this, however, the machine according to the above German AS has the same disadvantage as the known machine des-cribed at the beginning hereof.
In connection with the measures described hereinafter, there is the advantage that the material, while it is being ejected, is distribu-ted uniformly to all elbows, even if the material within the pipelines is delivered by the flow of air to the elbows to a greater extent in the lower parts of the pipelines. This uniform distribution is another reason for the uniformity of the individual spread-patterns.
In order to prevent too many grains of material from entering the upper bends of the elbows, provision is made, according to the present invention, starting from the outlet apertures from the pipelines, for the individual bends to be divided, after the first quarter of their total length by par-titions increasing gradually in height to the outer ends of the bends. Since the insides of the bends are of almost semi-circular cross-section, satisfactory sliding of the grains of material along the walls of the bends is achieved, whereas it is still impossible for these bends to become blocked while the machine is in operation, even when hygroscopic types of material are used.
According to another embodiment of the present machine, and in a manner again disclosed by German AS 24 52 793, attach-ment elements are provided for the arrangement of the baffle plates in a position, in front of the elbows, running from ' above, in relation to the direction of travel, obliquely down-wards, and in a position running from below, in relation to the direction of travel, obliquely upwards. In the case of granular types of fertilizer, these arrangements make it possible to use the machine both for normal and for so-called shoot or late fertilizing. In the case of the latter fertilizer, the machine . . . , ' .
can be utilized ~ithout raising the pipelines and elbows by means of special devices to a substantially higher position.
The machine according to the present invention, in particular, has the additional advantage of being able to spread both types of fertilizer uniformly over the entire width of the spreading path. In this connection, in order to achieve the greatest possible width of individual spread-patterns, it has been found desirable for the baffle plates, when inclined obli~uely down-wards, to slope at an angle of at least 65 in relation to the direction of travel. Great uniformity between individual spread-patterns is also achieved by ensuring that the outer ends of all ind:ividual bends of each elbow are at an equal average dis-tance from the respective ba~fle plate.
Optimally uniform spreading is obtained, especially in the case of so-called shoot or late fertilizing, by ensuring that the baffle plates, when arranged to slope obliquely upwards, ascend at an angle of at least approximately 45 to the direc-tion of travel.
Provision is made, according to the present invention, for a supportin~ surface for each of the baffle plates in their two positions, the supporting surfaces forming an an~le of approximately 20 to each other in relation to the direction of travel. This provides the additional advantage of particularly simple guidance of the baffle plates.
In accordance with one aspect of the present invention, there is provided a machine for the pneumatic discharge of granu-lar material, the said machine comprising a storage tank from which the material is passed, through a metering mechanism, to a plurality of pipelines connected to a blower, the outer ends of the said pipelines each beiny provided with an outlet aperture, being arranged at intervals at right angles to the direction of travel of the machine, and each being provided with an elbow, ' " ' : - , :
22~l~
each of the said elbows being divided into at least two separate curves, each extending over at least an approxirnate right angle, the outer ends of the said curves being spaced apart, as seen in the direction of the pipelines, characterized in that the elbows are arranged, in a manner known per se, at least approximately horizontally, and with their outer ends pointing ln a direction opposite to the direction of travel, a baffle plate, arranged at an oblique angle to the direction of travel, being provided in front of each elbow, in that the distances (c) between the outer ends of the separate curves of each elbow are shorter, by a multiple, than the distances (a) between the outlet aper-tures of the pipelines, the said outer ends being located in the vici-nity of the relevant baffle plates; and in that the separate curves slope at different angles, perpendicularly to the direc-tion of travel, towards the baffle plates, the inclination of the separate curves, corresponding to each other, towards the relevant baffle plates, being equal.
The invention is described hereinafter in greater detail in conjunction with the drawing attached hereto, wherein~-FIGURE 1 is a rear elevational view of one embodiment of the machine according to the present invention in its operative confi~uration, FIGURE ~ is a plan view of the machine according to Figure 1, -5a-' - ,. . - . . ' ' ' ~:
.: : , - : . . ..
1%;23~
FIGURE 3 is a plan view, to an enlarged scale, of an elbow attached to a pipeline, FIGURE 4 is a *iew of the same elbow along the line A-B, and FIGURE 5 is a view of the same elbow along the line C-D.
As seen in Figures 1 and 2, a machine according to the present invention is equipped with a storage tank i from which material is fed, through metering mechanism 2, to pipelines 3 which are connected to air-supply duct 4 from blower 5. Pipe-lines 3 are of different lengths, each being equipped, at an outer end 6,thereof, with an outflow aperture 7. The apertures 7 are located at uniform intervals a from each other at right angles to the direction of travel. Also attached to outer ends 6, by means of clips 9, are elbows 10 which extend horizontally, are bent almost at right angles to the direction of travel, and are inwardly open. Located in front of the elbows 10 are baffle plates 11 arranged obliquely in relation to the direction of travel, and are shown in Figures 1 and 2 in the downwardly in-clined position, also spaced apart at distances a.
When the machine is in operation, the material intro-duced into pipelines 3 is fed, with the aid of the flow of air produced by blower 5, to outflow apertures 7, and is distributed uniformly over the surface 13 of the ground in wide spread-patterns 12 by impact against baffle plates 11. In order to make this clear, one spread-pattern 12 in Figure 1 is shown in full lines, whereas the remaining patterns are shown in dotted lines. As also shown in Figure 1, at the usual ground clearance b of pipelines 3 for spreading, spread-patterns 12 extend in both directions over two distances a between baffle plates 11, so that they are also thrice overlapped in both directions.
This compensates for any lack of uniformity of material distribu-~' .
- ~ . . . . ..
~.0~2Z3~
tion in individual spread~patterns.
As shown in Figures 3 to 5, Eor the purpose of obtain-ing wide spread-pattern 12, each elbow is divided into three individual bends 14, 15, 16, outer ends 17, 18, 19 thereof being spaced at equal distances c, as seen in the direction of pipelines 3. Bends 14, 15, 16 also have different radii of curvature r, r', r", centres 20, 21, 22 thereof assuming different positions. Furthermore, starting from outflow apertures 7 in pipelines 3, bends 14, 15, 16 are divided, after the first quarter of their overall length by partitions 23 which gradually increase in height towards outer ends 17, 18, 19 of the bends, the insides of the bends being of semi-circular cross-section, as shown in Figure 4.
For the purpose of locating baffle plates 11 at elbows 10 in their normal position running obliquely downwards in relation to the direction of travel, a supporting surface 24 is located on the top of each upper bend 14, to which surface the respective baffle plate are secured by means of attachment elements 25 in the form of two bolts provided with nuts, the angle of inclination Q of the baffle plates being 65. Bends 14, 15, 16 are of a length such that the average disdances d between their respective outer ends 17, 18, 19 and baffle plates 11 are equal.
The bottom of each lower bend 16 is also provided -with a supporting surface 26 which forms an angle~of 200 with supporting surface 24 on the top of bend 14. Now, if baffle plates 11 are brought into position 11', shown in dotted lines in Figure 5 and provided for late fertilizing, by means of attachment elements 25, to which end they must first of all be rotated through 180, this inevitably produces an ascending angle~ of 45~. With the baffle plate in this position, fertilizer grains impinging thereupon are slung obliquely upwards and fall in wide, repeadedly overlapping spread-patterns onto the growing ~ ~i plants.
~ 7 ~
. , , . . , : ' ::
,, The invention relates to a machine for the pneumatic ejection of granular material.
A machine similar to that of the present is described in Applicant's German OS 22 38 328, February 1~, 1974, and has already been used successfully in agricultural practice.
However, the disadvantage of this machine is that it does not provide, for all kinds of granular material, uniform spreading of the material over the ground within the individual spread-paths produced by the machine, and therefore over the entire surface of the field to be spread. This disadvantage is attri-butable to the fact that, as a result of the impact of the mixture o air and material upon the baffle plates, relatively t narrow zones are spread at right angles to the direction of travel. Overlaps between the zones are so small that longitu-dinal strips are produced in which the spread-density of the material is higher or lower, especially in the case of materials of small average grain size. When seed and fertilizer are spread in this way, growth in the field is not uniform and the yield is therefore reduced.
This disadvantage cannot be eliminated by careful driving to keep the rows close together, since t~is can equalize the spread-density only along the edges of each zone. Spread-ing the field twice with only half the amount of material each time can overcome this disadvantage only if the machine is driven, during the second spread, with half the distance between the elbows. In practice, however, such accurate driving is scarcely possible, and there is therefore a danger of the second spread further increasing the lack of uniformity, at various locations over the field, Furthermore, this procedure reduces the output of the machine per unit area by half.
It is therefore the purpose of the invention to im-prove the known machine in such a manner that uniform distribution Lo8~ Z3a~
of any type of material may be achieved within each spread-pattern with the widest possible overlap at the two edges of each zone, thus making it possible to spread a larger area with uniform spread-density.
According to the invention, this purpose is achieved by utilizing a machine comprising a storage tank from which material is fed on a metering mechanism~to a plurality of pipe-lines connected to a blower. Outer ends of the pipelines are each provided with an outflow aperture arranged at intervals at right angles to the direction of travel of the machine and with an almost right-angled elbow, a baffle plate arranged obliquely ~o the direction of travel being located in front of each elbow. Each elbow is divided into at least two individual bends, the ends of which are at a distance from each other, as seen in the direction of the pipelines.
As a-result of the arrangement described in the pre-vious paragraph, the grains of material striking the baffle plates are slung out in substantially wider spread-patterns towards the ground, thus providing multiple overlapping of the spread patterns within each zone. This multiple overlapping leads to complete equaliæation and, in the case of material of fine or varying grain-size, to completely uniform spreading within the individual spread-patterns. Moreover, since the edge strips are spread with decreasing density, accurate over-lapping of successive patterns is so facilitated as to make possible uniform spreading of the material over the entire area of the field.
According to one preferred embodiment of the present invention, each elbow is preferably divided into three spearate bends. This still further improves the spreading accuracy within the individual spread-patterns. On the other hand, the separate bends may be of a width such that the machine does not become Z2~
obstructed during protracted operation even with hygroscopic types of material.
The invention also provides for the insides o~ the above to be open in the manner described in British Specification No. 1,381,922, published January 29, 1975, to Grataloup. This -has the additional advantages of being easier to manufacture and easier to clean.
If the individual bends have different radii of curva- -ture, this makes it easier to ensure that the spread-patterns deflected by the baffle plates are symmetrical, as seen in the direction of travel. It is also desirable, in this connection, for the centres of the radii of curvature of the individual arcs in each elbow to assume different positions.
According to a further preferred bmeodiment of the present invention, the elbows are arranged, in a manner known per se, at least approximately horizontally and pointing in a direction opposite to the direction oE travel,and, in each elbow, the outer end of the lowermost bend lies closest to, and the outer end of the uppermost bend lies Earthest away from, the centre of the machine. In this connection, the almost horizon-tal arrangement of the elbows, pointing in a direction opposite to the direction of travel, is already disclosed in German AS 24 52 793. These arrangements, in particular, provide the advantage that the machine can be lowered farther down, when in operation, without substantially narrowing the width of the individual spread-patterns. This lowering of the machine, and ejecting the mixture of air and material in a direction opposite to the direction of travel provides the advantage that wind has less affect upon the spreading than when the machine is higher, as well as there being a greater clearance between the ground and the elbows. Furthermore, trailer units which are not self-pro-pelled may, with these arrangements, be built advantageously low.
.
ZZ3~
Apart from this, however, the machine according to the above German AS has the same disadvantage as the known machine des-cribed at the beginning hereof.
In connection with the measures described hereinafter, there is the advantage that the material, while it is being ejected, is distribu-ted uniformly to all elbows, even if the material within the pipelines is delivered by the flow of air to the elbows to a greater extent in the lower parts of the pipelines. This uniform distribution is another reason for the uniformity of the individual spread-patterns.
In order to prevent too many grains of material from entering the upper bends of the elbows, provision is made, according to the present invention, starting from the outlet apertures from the pipelines, for the individual bends to be divided, after the first quarter of their total length by par-titions increasing gradually in height to the outer ends of the bends. Since the insides of the bends are of almost semi-circular cross-section, satisfactory sliding of the grains of material along the walls of the bends is achieved, whereas it is still impossible for these bends to become blocked while the machine is in operation, even when hygroscopic types of material are used.
According to another embodiment of the present machine, and in a manner again disclosed by German AS 24 52 793, attach-ment elements are provided for the arrangement of the baffle plates in a position, in front of the elbows, running from ' above, in relation to the direction of travel, obliquely down-wards, and in a position running from below, in relation to the direction of travel, obliquely upwards. In the case of granular types of fertilizer, these arrangements make it possible to use the machine both for normal and for so-called shoot or late fertilizing. In the case of the latter fertilizer, the machine . . . , ' .
can be utilized ~ithout raising the pipelines and elbows by means of special devices to a substantially higher position.
The machine according to the present invention, in particular, has the additional advantage of being able to spread both types of fertilizer uniformly over the entire width of the spreading path. In this connection, in order to achieve the greatest possible width of individual spread-patterns, it has been found desirable for the baffle plates, when inclined obli~uely down-wards, to slope at an angle of at least 65 in relation to the direction of travel. Great uniformity between individual spread-patterns is also achieved by ensuring that the outer ends of all ind:ividual bends of each elbow are at an equal average dis-tance from the respective ba~fle plate.
Optimally uniform spreading is obtained, especially in the case of so-called shoot or late fertilizing, by ensuring that the baffle plates, when arranged to slope obliquely upwards, ascend at an angle of at least approximately 45 to the direc-tion of travel.
Provision is made, according to the present invention, for a supportin~ surface for each of the baffle plates in their two positions, the supporting surfaces forming an an~le of approximately 20 to each other in relation to the direction of travel. This provides the additional advantage of particularly simple guidance of the baffle plates.
In accordance with one aspect of the present invention, there is provided a machine for the pneumatic discharge of granu-lar material, the said machine comprising a storage tank from which the material is passed, through a metering mechanism, to a plurality of pipelines connected to a blower, the outer ends of the said pipelines each beiny provided with an outlet aperture, being arranged at intervals at right angles to the direction of travel of the machine, and each being provided with an elbow, ' " ' : - , :
22~l~
each of the said elbows being divided into at least two separate curves, each extending over at least an approxirnate right angle, the outer ends of the said curves being spaced apart, as seen in the direction of the pipelines, characterized in that the elbows are arranged, in a manner known per se, at least approximately horizontally, and with their outer ends pointing ln a direction opposite to the direction of travel, a baffle plate, arranged at an oblique angle to the direction of travel, being provided in front of each elbow, in that the distances (c) between the outer ends of the separate curves of each elbow are shorter, by a multiple, than the distances (a) between the outlet aper-tures of the pipelines, the said outer ends being located in the vici-nity of the relevant baffle plates; and in that the separate curves slope at different angles, perpendicularly to the direc-tion of travel, towards the baffle plates, the inclination of the separate curves, corresponding to each other, towards the relevant baffle plates, being equal.
The invention is described hereinafter in greater detail in conjunction with the drawing attached hereto, wherein~-FIGURE 1 is a rear elevational view of one embodiment of the machine according to the present invention in its operative confi~uration, FIGURE ~ is a plan view of the machine according to Figure 1, -5a-' - ,. . - . . ' ' ' ~:
.: : , - : . . ..
1%;23~
FIGURE 3 is a plan view, to an enlarged scale, of an elbow attached to a pipeline, FIGURE 4 is a *iew of the same elbow along the line A-B, and FIGURE 5 is a view of the same elbow along the line C-D.
As seen in Figures 1 and 2, a machine according to the present invention is equipped with a storage tank i from which material is fed, through metering mechanism 2, to pipelines 3 which are connected to air-supply duct 4 from blower 5. Pipe-lines 3 are of different lengths, each being equipped, at an outer end 6,thereof, with an outflow aperture 7. The apertures 7 are located at uniform intervals a from each other at right angles to the direction of travel. Also attached to outer ends 6, by means of clips 9, are elbows 10 which extend horizontally, are bent almost at right angles to the direction of travel, and are inwardly open. Located in front of the elbows 10 are baffle plates 11 arranged obliquely in relation to the direction of travel, and are shown in Figures 1 and 2 in the downwardly in-clined position, also spaced apart at distances a.
When the machine is in operation, the material intro-duced into pipelines 3 is fed, with the aid of the flow of air produced by blower 5, to outflow apertures 7, and is distributed uniformly over the surface 13 of the ground in wide spread-patterns 12 by impact against baffle plates 11. In order to make this clear, one spread-pattern 12 in Figure 1 is shown in full lines, whereas the remaining patterns are shown in dotted lines. As also shown in Figure 1, at the usual ground clearance b of pipelines 3 for spreading, spread-patterns 12 extend in both directions over two distances a between baffle plates 11, so that they are also thrice overlapped in both directions.
This compensates for any lack of uniformity of material distribu-~' .
- ~ . . . . ..
~.0~2Z3~
tion in individual spread~patterns.
As shown in Figures 3 to 5, Eor the purpose of obtain-ing wide spread-pattern 12, each elbow is divided into three individual bends 14, 15, 16, outer ends 17, 18, 19 thereof being spaced at equal distances c, as seen in the direction of pipelines 3. Bends 14, 15, 16 also have different radii of curvature r, r', r", centres 20, 21, 22 thereof assuming different positions. Furthermore, starting from outflow apertures 7 in pipelines 3, bends 14, 15, 16 are divided, after the first quarter of their overall length by partitions 23 which gradually increase in height towards outer ends 17, 18, 19 of the bends, the insides of the bends being of semi-circular cross-section, as shown in Figure 4.
For the purpose of locating baffle plates 11 at elbows 10 in their normal position running obliquely downwards in relation to the direction of travel, a supporting surface 24 is located on the top of each upper bend 14, to which surface the respective baffle plate are secured by means of attachment elements 25 in the form of two bolts provided with nuts, the angle of inclination Q of the baffle plates being 65. Bends 14, 15, 16 are of a length such that the average disdances d between their respective outer ends 17, 18, 19 and baffle plates 11 are equal.
The bottom of each lower bend 16 is also provided -with a supporting surface 26 which forms an angle~of 200 with supporting surface 24 on the top of bend 14. Now, if baffle plates 11 are brought into position 11', shown in dotted lines in Figure 5 and provided for late fertilizing, by means of attachment elements 25, to which end they must first of all be rotated through 180, this inevitably produces an ascending angle~ of 45~. With the baffle plate in this position, fertilizer grains impinging thereupon are slung obliquely upwards and fall in wide, repeadedly overlapping spread-patterns onto the growing ~ ~i plants.
~ 7 ~
. , , . . , : ' ::
Claims (9)
1. A machine for the pneumatic discharge of granular material, the said machine comprising a storage tank from which the material is passed, through a metering mechanism, to a plurality of pipelines connected to a blower, the outer ends of the said pipelines each being provided with an outlet aperture, being arranged at intervals at right angles to the direction of travel of the machine, and each being provided with an elbow, each of the said elbows being divided into at least two separate curves, each extending over at least an approximate right angle, the outer ends of the said curves being spaced apart, as seen in the direction of the pipelines, characterized in that the elbows (10) are arranged, in a manner known per se, at least approxi-mately horizontally, and with their outer ends (17,18,19) point-ing in a direction opposite to the direction of travel, a baffle plate (11), arranged at an oblique angle to the direction of travel, being provided in front of each elbow, in that the dis-tances (c) between the outer ends (17,18,19) of the separate curves (14,15,16) of each elbow (10) are shorter, by a multiple, than the distances (a) between the outlet-apertures (7) of the pipelines (3), the said outer ends (17,18,19) being located in the vicinity of the relevant baffle plates; and in that the separate curves (14,15,16) slope at different angles, perpendi-cularly to the direction of travel, towards the baffle plates (11), the inclination of the separate curves, corresponding to each other, towards the relevant baffle plates (11), being equal.
2. A machine according to claim 1, characterized in that each elbow (10) is divided into three separate curves (14,15,16).
3. A machine according to claim 1 or 2, characterized in that the separate curves (14,15,16) of each elbow (10) have different radii of curvature (r,r',r").
4. A machine according to claim 1, characterized in that, in the case of each elbow, the outer end (19) of the lower curve (16) is closest to the centre of the machine, while the outer end (17) of the upper curve (14) is farthest away from the cen-tre of the machine, and in that the curves (14,15,16) of each elbow (10) are divided, starting from the outlet apertures (7), not before the first quarter of their overall length, by parti-tions (23) gradually increasing in height towards their ends (17,18,19).
5. A machine according to claim 4, characterized in that the insides of the separate curves (14,15,16) are of at least approximately semi-circular cross-section in the vicinity of the partitions (23).
6. A machine according to claim 1, characterized in that attachment elements (25) are provided, in a manner known per se, for the arrangement of the baffle plates (11), in a position in front of the elbows (10) running from above obliquely downwards in a direction opposite to the direction of travel (8), and in a position running from below obliquely upwards in a direction opposite to the direction of travel.
7. A machine according to claim 6, characterized in that in their arrangement sloping obliquely downwards, the baffle plates (11) have an angle of inclination (?) of at least approxi-mately 65° and, in their arrangment sloping obliquely upwards, an angle of inclination (.beta.) of at least approximately 45°, opposed to the direction of travel (8).
8. A machine according to claim 7, characterized in that a support surface (24,26) is provided for arranging each of the baffle plates (11) in their two positions, the said support surfaces forming an angle (?) of at least approximately 20°
opposed to the direction of travel (8).
opposed to the direction of travel (8).
9. A machine according to claim 7 or 8, characterized in that the outer ends (17,18,19) of the separate curves (14,15,16) of the elbows (10) are at an equal average distance (d), in their downwardly inclined arrangement, from the baffle plates (11).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2718841.6-23 | 1977-04-28 | ||
| DE19772718841 DE2718841C3 (en) | 1977-04-28 | 1977-04-28 | Machine for the pneumatic discharge of granular material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1082238A true CA1082238A (en) | 1980-07-22 |
Family
ID=6007464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA301,845A Expired CA1082238A (en) | 1977-04-28 | 1978-04-24 | Machine for the pneumatic ejection of granular material |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA1082238A (en) |
| DE (1) | DE2718841C3 (en) |
| FR (1) | FR2388480A1 (en) |
| GB (1) | GB1601896A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2755353C3 (en) * | 1977-12-12 | 1981-09-17 | Amazonen-Werke H. Dreyer Gmbh & Co Kg, 4507 Hasbergen | Distribution device for machines with pneumatic discharge |
| DE3047245C1 (en) * | 1980-12-16 | 1982-06-16 | Amazonen-Werke H. Dreyer Gmbh & Co Kg, 4507 Hasbergen | Distribution device for machines for the pneumatic discharge of granular material |
| DE3201877C1 (en) * | 1982-01-22 | 1983-03-31 | Accord-Landmaschinen Heinrich Weiste & Co, Gmbh, 4770 Soest | Machine for the pneumatic discharge of granular materials |
| DE3335805C2 (en) * | 1983-10-01 | 1985-06-20 | Rauch Landmaschinenfabrik GmbH, 7573 Sinzheim | Device for spreading loose material |
| DE3335806C2 (en) * | 1983-10-01 | 1986-01-02 | Rauch Landmaschinenfabrik GmbH, 7573 Sinzheim | Device for spreading loose material |
| DE3615075C1 (en) | 1986-05-03 | 1986-11-13 | Rauch Landmaschinenfabrik GmbH, 7573 Sinzheim | Device for the pneumatic spreading of fertilizer or the like. |
| DE3615076C1 (en) * | 1986-05-03 | 1986-11-13 | Rauch Landmaschinenfabrik GmbH, 7573 Sinzheim | Apparatus for the pneumatic spreading of fertiliser or the like |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE580742C (en) * | 1933-07-15 | Max Schober | Machine for atomizing kainite using compressed air | |
| GB191026154A (en) * | 1911-05-10 | 1911-10-05 | James William Chafer | Improvements in Apparatus for Distributing Insecticides, Fertilisers, or like Powdered Substances upon Growing Crops. |
| GB191228060A (en) * | 1912-12-05 | 1913-08-14 | Matthew Herrod | Apparatus for Distributing Powder on Crops. |
| GB873718A (en) * | 1959-03-18 | 1961-07-26 | Lundell Great Britain Ltd | Improvements in agricultural machines |
| AU426984B2 (en) * | 1967-01-03 | 1972-08-09 | Harold Goulter Victor | Improved seed sower or other distributing device |
| NL6812927A (en) * | 1968-09-10 | 1970-03-12 | ||
| DK124901B (en) * | 1971-04-15 | 1972-12-04 | Niro Atomizer As | Cleaning device for powder treatment apparatus. |
| DE2238328C3 (en) * | 1972-08-04 | 1975-09-18 | Amazonen-Werke H. Dreyer, 4501 Hasbergen | Machine for spreading granular or powdery material |
| NL7405556A (en) * | 1974-04-25 | 1975-10-28 | Lely Nv C Van Der | DEVICE FOR SPREADING MATERIAL. |
| GB1482310A (en) * | 1974-11-07 | 1977-08-10 | Amazonen Werke Dreyer H | Machine for pneumatically discharging granular material |
| FR2307456A1 (en) * | 1975-04-14 | 1976-11-12 | Nodet Gougis | IMPROVEMENTS IN THE SPREADING OF FERTILIZERS AND SPREADER FOR THEIR IMPLEMENTATION |
| FR2348639A2 (en) * | 1976-04-21 | 1977-11-18 | Nodet Gougis | Pneumatic spreader for granular material - has hopper-fed tubes each terminated by casing with unequal length surfaces directed towards ground |
-
1977
- 1977-04-28 DE DE19772718841 patent/DE2718841C3/en not_active Expired
-
1978
- 1978-04-24 CA CA301,845A patent/CA1082238A/en not_active Expired
- 1978-04-28 GB GB1692078A patent/GB1601896A/en not_active Expired
- 1978-04-28 FR FR7812832A patent/FR2388480A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE2718841B2 (en) | 1979-08-16 |
| FR2388480A1 (en) | 1978-11-24 |
| FR2388480B1 (en) | 1983-08-05 |
| DE2718841C3 (en) | 1980-04-17 |
| DE2718841A1 (en) | 1978-11-09 |
| GB1601896A (en) | 1981-11-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |