Liquid fertilizer sprayer distributor

Abstract

To provide a distributor which can uniformly distribute and supply liquid fertilizer into a plurality of spray devices.SOLUTION: The present invention includes: a distribution cylinder 20 formed in a bottomed cylindrical shape in which liquid fertilizer supplied from top is stored and in which a plurality of quantitative holes 22, ... 22, are provided at an appropriate interval at a position along an inner peripheral part of the bottom part 21 of the cylinder, the holes uniformly distributing the liquid fertilizer into a plurality of supply hoses 13, ... 13; and an agitation part 30. The agitation part 30 includes: a dome part 31 rotationally provided inside of the distribution cylinder 20 above the bottom 21 and which introduces the liquid fertilizer inside of the distribution cylinder 20 into each of the quantitative holes 22, .., 22 while agitating the fertilizer; and a cutter part 32 having a blade 32b provided below the dome part 31 and extending in a radial rotation direction of the dome part 31, which can cut between the blade 22a formed at an upper edge of each of the quantitative holes 22, ... 22, by being in a slide contact with the bottom 21.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a distributor for a liquid fertilizer spreading device used for spreading liquid fertilizer made of livestock manure and the like on soil in pastures, fields, and the like. [Background technology]

[0002] Traditionally, the manure of livestock such as cows, horses, and pigs has been used as fertilizer or compost by spreading it on pastures and fields. Fertilizing the soil with liquid fertilizer such as manure promotes organic farming. Conventionally, Patent Document 1 discloses a livestock manure spraying device. That is, while a vacuum truck containing liquid fertilizer is towed by a tractor or the like, the liquid fertilizer in the vacuum truck is sent to a distributor, which distributes it to multiple supply hoses. The liquid fertilizer is then sprayed into furrows formed in the soil from discharge injectors attached to the tip of each supply hose. The soil around the furrows is compacted and backfilled by rollers attached behind each discharge injector. The liquid fertilizer sprayed in the furrows is covered with soil, eliminating the bad odor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-109886 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the livestock manure spraying device in Patent Document 1, liquid fertilizer in a vacuum truck is distributed from a distributor to multiple supply hoses, and it is desirable that the amount of liquid fertilizer distributed to each supply hose be equal. This is because the entire soil becomes uniformly fertile when liquid fertilizer is evenly spread over the soil of a field such as a pasture or a farm. However, to the applicant's knowledge, there is no prior art that distributes liquid fertilizer evenly to each supply hose. In addition, livestock manure contains a significant amount of solid matter such as grass and straw. Generally, liquid fertilizer is 70% urine, with the remainder being feces and solid matter. Therefore, if the solid matter is large, it can cause the supply holes in the distributor to narrow or the supply hoses to become clogged, making it difficult to distribute the liquid fertilizer evenly. This causes the liquid fertilizer to be spread evenly over the soil in the field, and also lengthens the time it takes to spread the liquid fertilizer.

[0005] The present invention has been made in consideration of the above circumstances, and aims to provide a distributor that can evenly distribute and supply liquid fertilizer to a plurality of spraying devices, and can smoothly deliver liquid fertilizer to an injector without causing clogging or the like. [Means for solving the problem]

[0006] The invention described in claim 1 comprises a distribution tube (20) formed in a cylindrical shape with a bottom so that liquid fertilizer (LF) supplied from above can be collected, and having a plurality of metering holes (22, . . . , 22) formed at appropriate intervals along the inner peripheral edge of the bottom surface (21) for uniformly distributing the liquid fertilizer (LF) to a plurality of supply hoses (13); and a rotatable metering device (21) disposed inside the distribution tube (20) and above the bottom surface (21), a stirring section (30) including a dome section (31) for stirring and introducing liquid fertilizer (LF) into each of the metering holes (22,...,22), the stirring section (30) including a cutter section (32) provided at a lower portion of the dome section (31), extending in a radial direction of rotation of the dome section (31), and having a blade section (32b) capable of shearing between the blade sections (22a,...,22a) formed at the upper edges of each of the metering holes (22,...,22) of the bottom surface section (21); A liquid fertilizer spreading device distributor (10) comprising: The dome portion (31) is formed in a conical shape, and a plurality of fin portions (31c) are provided at symmetrical positions on the conical upper surface of the dome portion (31). The liquid fertilizer (LF) supplied within the distribution tube (20) is guided by centrifugal force along the conical upper surface of the dome portion (31) to the inner peripheral portion of the distribution tube (20) while being stirred by the multiple fin portions (31c) within the distribution tube (20); the cutter portion (32) rotates (turns) while sliding in contact with the bottom portion (21) on which the multiple metering holes (22,...,22) are arranged, thereby shearing and cutting solid matter in the liquid fertilizer (LF) between the cutter portion (32) and the blade portions (22a,...,22a) on the upper edges of the multiple metering holes (22,...,22), and the liquid fertilizer (LF) including the cut solid matter is distributed to the multiple metering holes (22,...,22) and guided to the supply hose (13). It is characterized by: It states that: Effect of the Invention

[0011] According to the invention described in claim 1, the liquid fertilizer is stirred inside the distribution tube by the rotation of the dome part, so that it can be efficiently and evenly distributed to each of the multiple metering holes. Furthermore, since the cutter part rotates while sliding on the bottom part where the multiple metering holes are arranged, a shear force is generated between the blade part of the cutter part and the blade part at the upper edge of each metering hole, so that the solid matter in the liquid fertilizer can be reliably cut and crushed. This makes it possible to prevent the metering holes and the supply hoses from becoming clogged, so that the liquid fertilizer can be efficiently and evenly distributed to each metering hole. As a result, the liquid fertilizer is evenly spread over the soil in the field. Moreover, the liquid fertilizer is quickly supplied to each supply hose, so that the spreading time can be shortened. [Brief description of the drawings]

[0016] [Figure 1] FIG. 2 is a perspective view showing the internal structure of a distributor of the liquid fertilizer spraying device according to the present invention. [Diagram 2]FIG. 2 is a plan view of the inside of the distributor of FIG. 1 as seen from above. [Diagram 3] FIG. 2 is an exploded perspective view of the internal structure of the distributor of FIG. 1. [Figure 4] FIG. 2 is a perspective view showing the entire distribution device of FIG. 1. [Diagram 5] FIG. 2 is a side view of the dispensing device of FIG. 1. [Figure 6] FIG. 2 is a perspective view of a liquid fertilizer spraying device and a vacuum truck connected to a tractor. [Figure 7] FIG. 7 is a plan view of FIG. 6. [Figure 8] 8 is a front view of the liquid fertilizer spraying device as seen from the arrow line VIa-VIa in FIG. 7. [Figure 9] 8 is a partial side view of the liquid fertilizer spraying device as seen from the line VIb-VIb in FIG. 7. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, a distributor of a liquid fertilizer spraying device according to an embodiment of the present invention will be described with reference to the drawings. The liquid fertilizer spraying device 10 is a spraying device that sprays liquid fertilizer such as livestock manure into the soil of a farm field. As an example, the liquid fertilizer spraying device 10 is towed by, for example, the rear of a tractor 60 as shown in Fig. 6 to Fig. 9, and includes a main frame 11 connected to the tractor 60 via a connecting part 11a. Furthermore, a distributor 12 that distributes liquid fertilizer is disposed on the upper part of the main frame 11, and a plurality of discharge injectors 15,...,15 are supported by injector support members 14,14 at the lower part of the main frame 11 so as to be disposed in the lateral directions to the left and right with respect to the traveling direction of the tractor 60. The injector support members 14,14 are provided so as to be pushed down and pulled up by actuators 14a,14a such as cylinders connected to the main frame 11.

[0018] The liquid fertilizer LF distributed by the distributor 12 is supplied to each discharge injector 15,...,15 provided at the tip of a plurality of supply hoses 13,...,13 as shown in Figures 7 to 9. In this embodiment, ten supply hoses 13,...,13 and ten discharge injectors 15,...,15 are provided. 7 to 9, the supply hoses 13, . . . , 13 are not shown, and the flow of the liquid fertilizer LF is mainly indicated by dotted lines.

[0019] 8 and 9, the liquid fertilizer spraying device 10 includes furrow making rollers 16,...,16 for forming furrows in the field in front of the discharge injectors 15,...,15 in the traveling direction, and cutters 17,...,17 for scraping out soil at the bottom of the furrows formed by the furrow making rollers 16,...,16 between the furrow making rollers 16,...,16 and the discharge injectors 15,...,15. Also, rollers 18,...,18 for covering the top of the furrows with soil after spraying the liquid fertilizer LF are provided behind the discharge injectors 15,...,15. As described above, the injector-related mechanism 19 consisting of the discharge injector 15, groove forming roller 16, cutter 17, and roller 18 shown in Figure 9 is not shown in detail in Figures 7 and 8, and its installation position is indicated by a two-dot chain line.

[0020] In this embodiment, as shown in Figures 6 and 7, a vacuum truck 70 containing liquid fertilizer LF is positioned behind the liquid fertilizer spraying device 10 and is connected to and towed by a tractor 60, and the liquid fertilizer LF is supplied from the tank of the vacuum truck 70 to the top of the distribution device 12 via a pressure delivery hose 71.

[0021] Next, the distribution device 12, which is the main component of this embodiment, will be described in detail. FIG. 1 is an oblique view showing the internal structure of the distribution device 12, FIG. 2 is a plan view of the inside of the distribution device 12 viewed from above, FIG. 3 is an exploded oblique view of the internal structure of the distribution device 12, FIG. 4 is an oblique view showing the entire distribution device 12, and FIG. 5 is a side view of the distribution device 12.

[0022] The distributor 12 is basically composed of a distributor tube 20, a stirring section 30, and a lid section 40. 1 and 4, the distribution tube 20 has an upper opening 20a at the top, and is formed into a cylindrical shape with a bottom so that the liquid fertilizer LF supplied from this upper opening 20a can be collected. The bottom surface 21 of the distribution tube 20 has a plurality of metering holes 22,...,22 that distribute the liquid fertilizer LF evenly formed at appropriate intervals along the inner peripheral edge of the cylinder. In this embodiment, ten metering holes 22,...,22 are formed at regular intervals. By arranging the multiple metering holes 22,...,22 at regular intervals in this manner, more efficient and even distribution is possible, but the arrangement is not limited to being at regular intervals. In addition, the lower part of the bottom portion 21 is provided with hose connecting pipes 23,...,23 that communicate with each of the metering holes 22,...,22, and supply hoses 13,...,13 corresponding to each of these hose connecting pipes 23,...,23 are connected to them.

[0023] The agitator 30 is inside the distributor 20 and rotatably disposed above the bottom surface 21. The agitator 30 is provided with a conical dome portion 31 that agitates the liquid fertilizer LF in the distributor 20 while introducing it into each of the metering holes 22, 22, as shown in Fig. 1. In addition, a cutter portion 32 is provided below the dome portion 31. The cutter portion 32 rotates while sliding against the bottom surface 21 in which the multiple metering holes 22, 22 are disposed, and cuts solid matter such as grass and straw in the liquid fertilizer LF.

[0024] As shown in Fig. 3, the bottom surface 21 of the distribution tube 20 is provided with a rotatable rotating disk 33 at approximately the center, and this rotating disk 33 is provided so as to be rotatable forward and reverse by a rotation drive device such as a motor (not shown). A circular ring-shaped dome base 31a is attached to the rotating disk 33, and a conical dome portion 31 is provided on the upper portion of this dome base 31a. The dome portion 31 itself is rotated by the rotating disk 33, and has the function of stirring the liquid fertilizer LF in the distribution tube 20.

[0025] Furthermore, on the conical upper surface of the dome portion 31, a plurality of fin portions 31c,...,31c extending upward perpendicular to the direction of rotation are arranged at equal intervals along the circumferential direction. In this embodiment, four fin portions 31c,...,31c are arranged symmetrically around the axis of rotation, but the number and shape of the fin portions 31c are not particularly limited. Incidentally, the provision of the fin portions 31c ensures that the liquid fertilizer LF can be stirred, so that the liquid fertilizer LF can be distributed evenly to each of the metering holes 22,...,22 more efficiently.

[0026] The cutter portion 32 is formed in a ring shape and is rotatably mounted on a rotating disk 33. The cutter portion 32 is provided with a plurality of cutters 32a,...,32a, which are arranged approximately evenly around the outer periphery of the dome base 31a and are attached to cutter support portions 31b,...,31b extending radially. Each cutter 32a,...,32a attached to the cutter support portions 31b,...,31b slides or rotates at a certain gap on the bottom surface 21 on which the multiple metering holes 22,...,22 are arranged as the dome base 31a rotates, and shears (cuts) the solid material in the distribution tube 20 between the blade portions 22a formed on the upper edges of each of the metering holes 22,...,22. Although the purpose can be achieved with only one cutter 32a, providing multiple cutters 32a allows the solid matter in the liquid fertilizer LF, such as grass and straw, to be efficiently cut, enabling more efficient distribution. In this embodiment, the four cutters 32a, . . . , 32a are arranged at approximately constant intervals in the rotational direction, but the number and intervals of the cutters 32a are not particularly limited.

[0027] In this embodiment, each cutter 32a,...,32a is formed in a disk shape with an area larger than each metering hole 22,...,22, and its center is rotatably attached to a cutter support part 31b protruding in the radial direction of rotation of the dome base 31a. Also, a blade part 32b is formed on the outer periphery of each cutter 32a,...,32a. As a result, cutting can be performed even when the dome part 31 is rotated forward and backward. Also, the range of the shearing part between the metering hole 22 and both blades 22b,32b of the cutter 32a is long, so cutting can be performed efficiently. As described above, each of the disk-shaped cutters 32a, . . . , 32a is not fixed to the cutter support portion 31b but is rotatably attached and supported thereon, so that the entire circumference of the cutter 32a can be used as the blade portion 32b. As a result, the blade portion 32b of the cutter 32a wears evenly, and cutting work can be performed without getting caught on solid objects in the distribution tube 12 during operation. The cutter 32a may be provided with two blades extending in the radial direction so as to correspond to forward and reverse rotation, and is not particularly limited to being disk-shaped.

[0028] The lid 40 closes (covers) the upper opening 20a of the distribution tube 20 as shown in Figures 4 and 5. Approximately in the center of the lid 40, a curved liquid fertilizer introduction pipe 41 is provided for introducing the liquid fertilizer LF into the distribution tube 20. A pressure-feeding hose 71 for pressure-feeding the liquid fertilizer LF from a vacuum truck 70 is connected to this liquid fertilizer introduction pipe 41. 5, an arm portion 43 attached to the upper surface of the lid portion 40 can rotate upward about a hinge portion 11b provided on the main frame 11, thereby enabling the lid portion 40 to open or close the upper opening 20a of the distribution tube 20. The lid portion 40 that closes (covers) the upper opening 20a is configured to be locked by a locking mechanism 42.

[0029] Next, the operation of the distributor 12 of the liquid fertilizer spraying device of this embodiment will be described with reference to the drawings. When spreading fertilizer, the liquid fertilizer spreading device 10 is towed by a tractor 60 in a farm field as shown in Figures 6 and 7, and a vacuum truck 70 is also towed at the same time. At this time, the liquid fertilizer LF inside the vacuum truck 70 is pumped through a pressure-feeding hose 71, and is introduced into the inside of the distribution tube 20 from the center of the lid 40 through the liquid fertilizer introduction pipe 41 of the distribution device 12.

[0030] When the liquid fertilizer LF is introduced into the distribution tube 20 near the apex of the dome section 31, the dome section 31 is already rotating as shown in Figures 1 and 2, so the liquid fertilizer LF is guided by centrifugal force along the upper surface of the cone shape to the inner periphery of the distribution tube 20. Furthermore, when the liquid fertilizer LF is filled into the distribution tube 20, it is stirred by the four rotating fin sections 31c,...,31c, so that the liquid fertilizer LF is efficiently and evenly distributed to each of the metering holes 22,...,22.

[0031] In addition, each of the multiple cutters 32a,...,32a that make up the cutter section 32 rotates (pivots) while sliding in contact with the bottom surface section 21 in which the multiple metering holes 22,...,22 are arranged, so that, as shown in Figure 2, solid matter such as grass and straw in the liquid fertilizer LF is sheared and cut between the blade portions 32b of each cutter 32a,...,32a and the blade portions 22a on the upper edges of each of the metering holes 22,...,22. The manure in liquid fertilizer LF contains solid matter such as grass and straw that are quite large. Generally, liquid fertilizer is about 70% urine, with the remainder being feces and solid matter. Therefore, if left as is, the metering holes 22,...,22 and the supply hoses 13,...,13 may become clogged with the solid matter. Therefore, by cutting the solid material into small pieces with the cutter unit 32 as described above, it is possible to prevent the liquid fertilizer LF from clogging the metering holes 22,...,22 and the supply hoses 13,...,13. This makes it possible to efficiently distribute the liquid fertilizer evenly to the metering holes 22,...,22. Moreover, the liquid fertilizer LF is supplied to the supply hoses 13,...,13 more quickly, which contributes to shortening the spraying time.

[0032] When the liquid fertilizer spreading device 10 is towed by the tractor 60, furrows are made in the field by the furrow making rollers 16, . . . , 16 and the cutters 17, . . . , 17 provided in front of each discharge injector 15, . . . , 15. The liquid fertilizer LF evenly distributed inside the distribution tube 20 of the distribution device 12 is passed through multiple supply hoses 13,...,13 and sprayed into the furrows of the field from each discharge injector 15,...,15 installed at the end of each hose, as shown by dotted lines in Figures 7 to 9. Therefore, the liquid fertilizer LF flows evenly through each supply hose 13, so that the liquid fertilizer can be evenly spread over the soil in the field. Moreover, the rollers 18, 18 provided behind each discharge injector 15, 15 cover the top of the furrows with soil, so that the liquid fertilizer LF is sealed within the soil, preventing the dispersion of bad odors. [Industrial Applicability]

[0033] INDUSTRIAL APPLICABILITY The present invention is applicable in a wide range of fields, such as the agricultural machinery manufacturing and sales industry, which manufactures agricultural machinery-related products, the dairy farming industry, and the livestock industry. [Explanation of symbols]

[0034] 10 Liquid fertilizer spraying device 11 Main frame 11a Connection portion 11b Hinge portion 12 distribution device 13 supply hose 14 injector support member 14a actuator 15 Discharge injector 16 Grooving roller 17 Cutter 18 Roller 19 Injector-related mechanisms 20 Distribution cylinder 20a Top opening 21 Bottom part 22 Metering hole 22a Blade 23 Hose connecting pipe 30 stirring section 31 dome section 31a Dome base 31b Cutter support 31c Fin section 32 Cutter section 32a Cutter 32b Blade 33 Rotating Disc 40 Lid 41 Liquid fertilizer introduction pipe 42 Locking mechanism 43 Arm section 60 Tractor 70 Vacuum truck 71 Pressure hose LF liquid fertilizer

Claims

[Claim 1] A distribution tube is formed in a cylindrical shape with a bottom so that liquid fertilizer supplied from the top can be collected, and a plurality of metering holes are formed at appropriate intervals along the inner peripheral portion of the bottom surface of the distribution tube to distribute the liquid fertilizer evenly to a plurality of supply hoses; A distributor for a liquid fertilizer spraying device, comprising: a dome section rotatably disposed inside the distributor tube above the bottom section, which introduces the liquid fertilizer in the distributor tube into each of the metering holes while stirring the liquid fertilizer; and a stirrer section provided below the dome section, extending in a radial direction of the rotation of the dome section, and including a cutter section having a blade section that can be sheared between the dome section and a blade section formed on an upper edge of each of the metering holes in the bottom section. The dome portion is formed in a conical shape, and a plurality of fin portions are provided at symmetrical positions on the conical upper surface of the dome portion, The liquid fertilizer in the distribution cylinder is stirred by the plurality of fins in the distribution cylinder and guided along the conical upper surface of the dome portion to the inner peripheral portion of the distribution cylinder by centrifugal force. A distributor for a liquid fertilizer spraying device, characterized in that the cutter section slides and rotates (pivots) in contact with the bottom surface on which the multiple metering holes are arranged, thereby shearing and cutting the solid matter in the liquid fertilizer between the cutter section and the blade section on the upper edge of the multiple metering holes, and distributing the liquid fertilizer containing the cut solid matter to the multiple metering holes and guiding it to the supply hose.

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