JP5825471B2 - Nozzle and chemical spreader - Google Patents

Description

  The present invention relates to, for example, a nozzle for spraying a drug on seedlings accommodated in a cell tray and a drug sprayer including the nozzle.

  For example, an agrochemical granule spraying container described in Patent Document 1 is known as a prior art for spraying a drug onto seedlings stored in a cell tray (nursery seedling box). This pesticide granule spraying container has a container main body for storing a pesticide granule (medicine) and a hole attached to the upper opening of the container main body for allowing the pesticide granule to flow out in at least one line in a straight line. When spraying agricultural chemical granules, the seedlings contained in the cell tray are moved by moving the container at a constant speed in the horizontal direction with the container tilted above the cell tray. A pesticide granule is sprayed uniformly. However, in this pesticide granule spraying container, since the lid diameter is small relative to the cell tray width, the container is moved several times in the width direction of the cell tray, so the moving distance becomes long and the efficiency of spraying work is difficult. In addition, when the spraying area is large, the burden on the operator increases.

Japanese Utility Model Publication No. 07-28082

  Then, this invention was made | formed in view of the said situation, and it was made as a subject to provide the nozzle and chemical | medical agent spreader which can perform chemical | medical agent distribution more efficiently.

In order to solve the above-described problem, the nozzle of the present invention is a nozzle that is connected to a connection port of a container that stores a drug and sprays the drug stored in the container, and is connected to the connection port of the container. A connecting pipe, a nozzle part extending in the width direction of the nozzle and having a plurality of holes arranged to flow out the medicine introduced through the connecting pipe in at least one row, and the connecting pipe and the nozzle part. provided between, have a, and the body having a hollow portion where the height is reduced with the width direction from the connecting pipe to the nozzle portion is expanded, the inside of the barrel, said connection tube A pair of inflow-side facing surfaces whose width increases from the nozzle toward the nozzle portion and a mutual interval is reduced, and one side is connected to the pair of inflow-side facing surfaces and the other side is connected to the nozzle portion. When the width is formed constant And a pair of outflow side facing surfaces having a constant distance from each other, and the pair of outflow side facing surfaces extending in the width direction of the nozzle and flowing down from the connection pipe toward the nozzle portion on the pair of outflow side facing surfaces A wall-like diffusion portion is provided for diffusing the flow of gas in the width direction of the nozzle, and the diffusion portion is formed in the entire width of the nozzle, and the axis of the connecting pipe is formed on each of the pair of outflow side facing surfaces. It is characterized by being alternately arranged in the direction at predetermined intervals .
Moreover, in order to solve the said subject, the chemical | medical agent spreader of this invention is provided with the said nozzle.

  In the following description, for convenience, the nozzle portion side of the nozzle is defined as the front side, the connecting tube side is defined as the rear side, and the axial direction of the connecting tube is defined as the front-rear direction. It should be noted that the front-rear direction and the flow-down direction of the drug are substantially the same direction, and both are properly used as necessary. In addition, the width direction of the nozzle (hereinafter simply referred to as the width direction) and the arrangement direction of the holes are substantially the same direction. Furthermore, the direction perpendicular to both the front-rear direction and the width direction is defined as the up-down direction or the height direction, and both are used as necessary.

  For example, the nozzle portion is formed in a rectangular shape that is long in the width direction and short in the height direction. The length of the nozzle part in the width direction is set in correspondence with the width of the cell tray (nursing seedling box), for example. Moreover, the nozzle part can be gently curved in the front-rear direction. Further, the holes arranged in the nozzle portion are usually sufficient in one row, but can be arranged in a plurality of rows if necessary. The shape and size of the holes arranged in the nozzle portion can be appropriately set according to the medicine to be sprayed, for example, a circular shape, an elliptical shape, a polygonal shape, or a slit shape extending over the entire region in the width direction. It can be. Further, the interval (pitch) between the holes does not need to be uniform, and in general, the holes arranged in the center of the nozzle portion with respect to the amount of the medicine flowing out from the holes arranged on both sides in the width direction of the nozzle portion. Since a larger amount of medicine tends to flow out from the nozzle, the interval between the holes arranged in the center of the nozzle portion can be set larger than the interval between the holes arranged on both sides in the width direction of the nozzle portion. . For the same reason, the diameter of the holes arranged on both sides in the width direction can be set larger than the diameter of the hole arranged in the center of the nozzle portion.

  The nozzle of the present invention is preferably composed of a synthetic resin having required performance such as chemical resistance, for example, a thermoplastic resin (elastomer) such as polyethylene or polypropylene. In addition, the nozzle can be directly molded into a product shape by molding means such as injection molding, injection blow molding, blow molding, etc., but the molded body of the developed shape is molded and assembled later. Product shape. In this case, the connecting pipe is cylindrical, for example, the connecting pipe and the body are vertically divided into two half shells in the vertical direction (height direction) by a plane (axial plane) including the axis of the connecting pipe, By developing each connecting portion between the half shell and the nozzle portion as a developing shaft, a molded body of the nozzle can be obtained. In this molded body, a pair of side walls that are formed in a triangular cross section and are opposed to each other are provided on both sides in the width direction of the nozzle portion, and each half-shell is rotated about each deployment shaft (connecting portion). Accordingly, it is possible to make the end face of one side of the pair of side walls of the triangle closely contact with the end face of one half-shell, and the end face of the other side closely contact with the end face of the other half-shell.

  In the nozzle of the present invention, a plurality of fasteners are disposed on the side walls on both sides in the width direction of the body portion along the mating surfaces (half-split surfaces) of the two half-shells. In addition, by holding (fastening) the two half-shells in a state where the respective half-split surfaces are in close contact with each other, liquid leakage from between the two half-shells can be prevented. The fastener can be appropriately selected from the prior art, for example, provided with a protrusion on the outer surface of the side wall of one half shell, and provided with a portal buckle on the outer surface of the side wall of the other half shell, It can comprise so that it may fasten by engaging a buckle with a protrusion. And an increase in the number of parts and a manufacturing cost can be suppressed by integrally forming a fastener with a nozzle.

  The nozzle of the present invention has positioning means for relatively positioning two half-shells by engaging the convex portions of one half-shell with the opposing concave portions of the other half-shell. The positioning means includes, for example, a plurality of convex portions arranged at a predetermined interval along one half-shell and a half-plane, and the other half-shell arranged along the half-plane. A plurality of recesses can be used. Then, by bending and deforming each flexible connecting portion between each half-shell and the nozzle portion, each half-shell is rotated around each deployment axis, and each convex portion of the positioning means is relative to each other. Engage with each recess. Thereby, the two half-shells are relatively positioned, and the half-plane of one half-shell can be matched with the half-plane of the other half-shell. In addition, like the fastener, the positioning means and the nozzle are integrally formed, so that the increase in the number of parts and the manufacturing cost can be suppressed.

  The nozzle of the present invention has a pair of inflow side (rear side) facing surfaces whose width is enlarged from the connecting pipe toward the nozzle portion and the distance between them is reduced, and one side is a pair of inflows. A pair of outflow side (front side) facing surfaces are formed which are connected to the side facing surface and connected to the nozzle portion on the other side and have a constant width and a constant distance from each other. In addition, a pair of inflow side opposing surface does not necessarily need to be a plane, and can comprise a curved surface. And a wall-shaped diffusion part for diffusing the flow of the medicine flowing down from the connecting tube toward the nozzle part in the arrangement direction of the holes is arranged on the pair of inflow side facing surfaces or the pair of outflow side facing surfaces. . Thereby, the chemical | medical agent flowed in from the connecting pipe can be spread | diffused in the width direction within a trunk | drum, and a chemical | medical agent can be uniformly distributed over the whole region of the hole arrangement direction (width direction) of a nozzle part. In addition, the shape and arrangement | positioning of a spreading | diffusion part can be set suitably. For example, a diffusion plate (diffusion part) having the same height as the side wall of each half shell is provided on each of the pair of outflow side facing surfaces in the front-rear direction (axial direction of the connecting pipe) over the entire width inside the nozzle. They can be alternately arranged at predetermined intervals.

  In the nozzle of the present invention, a single male screw is formed on the outer peripheral surface of a cylindrical connecting pipe, and this male screw is formed on the inner peripheral surface on the other end side of a cylindrical connecting member having a flange at one end. The formed female screw is screwed together. Then, the internal thread formed on the inner peripheral surface of the annular fixing member that has been previously penetrated through the connection member is screwed into the external thread formed on the outer peripheral surface of the connection port of the container and tightened, thereby The flange is pressed against the connection port end face of the container, and the nozzle is attached to the container. In the medicine spreader of the present invention, a plurality of holes are formed in the plate between the nozzle and the container, more specifically, between the flange of the connection member attached to the nozzle and the connection port end face of the container. The screen member is interposed, and the flow rate of the medicine flowing from the container to the nozzle can be controlled by the screen member. Thereby, it is possible to prevent the medicine from flowing from the container to the nozzle at a large flow rate, and to effectively act on the diffusing portion, and to spread the medicine more uniformly over the entire area in the nozzle width direction.

  The container of the medicine spreader of the present invention is formed in a size cylinder as compared with a commercially available oil mug formed in a substantially conical shape, and a medicine injection port is opened in the upper rear part. This medicine injection port has a shape in which the oil injection port of a commercially available oil mug is largely cut in the left and right sides (nozzle width direction), whereas it is opened on one plane inclined with respect to the horizontal plane. In other words, it opens as if it was cut out in one plane inclined with respect to the horizontal plane. Thereby, the capacity | capacitance of the upper part of a container can be ensured, and even if it is a case where a container is tilted comparatively vigorously, a chemical | medical agent does not spill out from the right and left of a chemical | medical agent injection port.

  The container of the medicine spreader of the present invention has a handle that extends vertically from the vicinity of the medicine inlet to the vicinity of the bottom. In a commercially available oil mug or the like, the handle is provided only at the top of the container, and the operator cannot shift the gripping position downward, and it is difficult to balance when the container is tilted. Therefore, in the medicine spreader of the present invention, the handle is extended from the top to the bottom of the container, so that it becomes easy to balance when the container is tilted and the burden on the operator can be reduced.

  The chemical | medical agent spread | dispersed by the chemical | medical agent spreader provided with the nozzle of this invention and this nozzle can be made into a liquid agrochemical formulation and a solid agrochemical formulation, for example. The liquid pesticide preparation is a stock solution or diluted several times to 10000 times with water. On the other hand, the solid agrochemical formulation used is diluted several times to 10000 times with water. When diluting, a liquid or solid agricultural chemical formulation may be poured into a container, then water may be injected, and then stirred to dilute uniformly. After water has been poured into the container, a liquid or solid agricultural chemical formulation is injected. Then, the mixture may be stirred and diluted uniformly.

  As liquid agrochemical formulations, for example, liquid concentrates (emulsifiable concentrates), suspension concentrates, concentrated emulsions, suspoemulsion, microemulsions, etc. are used. can do. The liquid agrochemical formulation contains an agrochemical active ingredient and a liquid carrier, and if necessary, a surfactant, a penetrating agent, a spreading agent, a thickener, an antifreezing agent, a binder, an anti-caking agent. , Disintegrating agents, antifoaming agents, preservatives, decomposition preventing agents and the like can be contained. In addition, as solid agrochemical formulations, for example, powdered formulations of wettable powder and water-soluble powder, granular formulations of water-dispersible granule and water-soluble granule, Etc. can be used. The solid agrochemical formulation contains an agrochemical active ingredient and a solid carrier, and if necessary, a surfactant, a penetrating agent, a spreading agent, a thickener, an antifreezing agent, a binder, and an anti-caking agent. , Disintegrating agents, antifoaming agents, preservatives, decomposition preventing agents and the like can be contained.

  ADVANTAGE OF THE INVENTION According to this invention, the nozzle and chemical | medical agent sprayer which can perform chemical | medical agent distribution more efficiently can be provided.

It is a top view of the nozzle of this embodiment. It is a right view of the nozzle of this embodiment. It is a front view of the nozzle of this embodiment. It is a rear view of the nozzle of this embodiment. It is a top view of the molded object which developed the nozzle of this embodiment. It is a right view of the molded object which developed the nozzle of this embodiment. It is AA sectional drawing in FIG. It is a perspective view of the container of this embodiment. It is a front view of the connection member of this embodiment. It is a perspective view of the medicine spreader of this embodiment. It is a rear view of the medicine spreader of this embodiment. It is a figure which shows the state which is sprinkling water to a cell tray using the chemical | medical agent spreader of this embodiment. It is explanatory drawing of the watering test of this embodiment, Comprising: It is a figure which shows the state in which three cell trays were arranged vertically. It is explanatory drawing of the watering test of this embodiment, Comprising: It is a figure which shows the state by which the drainage hole of the bottom part of the cell was obstruct | occluded with the adhesive tape. It is explanatory drawing of the watering test of this embodiment, Comprising: It is a figure which shows the location of each cell in a cell tray. It is explanatory drawing of the watering test of this embodiment, (A) is a table | surface which shows the test result at the time of watering a cell tray using the chemical | medical agent spreader of this embodiment, (B) is a commercially available typical It is a graph which shows the test result at the time of watering a cell tray using a simple watering. It is explanatory drawing of the watering test of this embodiment, Comprising: It is a figure which shows the location of the cell corresponding to the test result taken out as a sample corresponding to FIG. It is explanatory drawing of the watering test of this embodiment, Comprising: Table 1 is the figure which represented the graph.

  An embodiment of the present invention will be described with reference to the accompanying drawings. Here, a drug spreader 31 (see FIGS. 10 and 11) for spraying a liquid pesticide preparation (medicine) on vegetable seedlings stored in a cell tray 41 (nursery seedling box, see FIG. 12), and this drug spreader 31 The nozzle 1 connected to the nozzle connection tube 3 (connection port) will be described. In the following description, for the sake of convenience, the lower side in FIG. 1 is defined as the front side and the upper side in FIG. 1 is defined as the rear side, that is, the vertical direction in FIG. . Further, the horizontal direction in FIG. 1 is defined as the width direction of the nozzle 1, and the vertical direction in FIGS. 2 to 4 is defined as the height direction or vertical direction of the nozzle 1.

  As shown in FIGS. 1 to 4, the nozzle 1 has a connecting pipe 4 provided at the rear part of the nozzle 1 and a plurality (37 in this embodiment) of holes 5 provided at the front part of the nozzle 1. It is comprised by the nozzle part 6 arranged in a line, and the hollow trunk | drum 7 provided between the nozzle part 6 and the connection pipe 4. As shown in FIG. The connecting pipe 4 is formed in a cylindrical shape, and a single male screw 8 is formed on the outer peripheral surface thereof. As shown in FIG. 3, the nozzle portion 6 is formed in a rectangular shape whose width direction (left-right direction in FIG. 3) is longer than the height direction (up-down direction in FIG. 3). Note that the long side of the rectangle, that is, the width of the nozzle portion 6 is set to correspond to the cell tray 41. In this embodiment, the rectangular side is set to 300 mm to match the cell tray 41 of 300 mm (width) × 450 mm (full length). Is set.

  The body portion 7 is formed in a substantially rectangular shape and is disposed in parallel with the vertical direction (vertical direction in FIG. 2), and is connected to the pair of front walls 9 and 10 (see FIG. 1 and the pair of rear walls 11 and 12 that are smoothly connected to the connecting pipe 4 while being reduced in width, and are arranged on both sides in the width direction (left and right direction in FIG. 1). A pair of side walls 13, 14 connecting the walls 9, 10 and the pair of rear walls 11, 12. As shown in FIGS. 2 and 4, the side walls 13, 14 are formed such that the portions connected to the pair of rear walls 11, 12 are increased in height toward the rear.

  As shown in FIGS. 5 and 6, the nozzle 1 is composed of two halfs by an axial plane in which the connecting pipe 4 and the body 7 are half the height of the side walls 13, 14 and include the axis of the connecting pipe 4. The shells 15 and 16 are divided in half. In addition, the nozzle 1 is formed by connecting the half shells 15 and 16 to the connecting portions 17 and 18 (deployment shafts) for connecting the half shells 15 and 16 and the nozzle portion 6 with the half split surfaces 15a and 16a. It is comprised by the molded object developed around. The nozzle 1 is made of a thermoplastic resin (elastomer) such as polyethylene or polypropylene.

  There are a plurality (seven in this embodiment) of a portion on the left side of the center line CL in FIG. 5 of the half shell 15 and a portion on the right side of the half shell 16 in FIG. Convex portions 19 (positioning means) are arranged at predetermined intervals along the half-split surfaces 15a and 16a, and the left-side portion and the half-shell 15 of the half-shell 16 with respect to the center line CL in FIG. In the right part of the center line CL in FIG. 5, a recess 20 (positioning means) corresponding to each protrusion 19 is provided. And each half-shell 15 and 16 is bent by each connecting part 17 and 18 having flexibility between the nozzle part 6 and rotated around each developing axis, and each convex part 19 is opposed to each concave part. By engaging (fitting) 20, the two half shells 15, 16 are relatively positioned, that is, the half surface 15 a of the half shell 15 and the half surface 16 a of the half shell 16 coincide. (Consistent) is configured.

  Further, on each side wall 13, 14 on both sides in the width direction of the body portion 7, more specifically, on each side wall 13, 14, two places on the left and right sides connected to the pair of front walls 9, 10, and a pair Fasteners 21 are arranged at a total of four places on both the left and right sides connected to the rear walls 11, 12. By fastening these fasteners 21, two half-shells 15 are arranged. , 16 are held (fastened) in a state in which the respective half surfaces 15a, 16a are in close contact with each other. In addition, the fastener 21 can select the fastening of a prior art suitably, and in this embodiment, the protrusion 21a is provided in the outer surface of the side walls 13 and 14 on both the left and right sides of the upper half shell 15, and the lower side The half-shell 16 is provided with a portal-shaped buckle 21b on the outer side surfaces of the left and right side walls 13, 14 so that the fasteners 21 can be fastened by engaging the respective buckles 21b opposite to the projections 21a. It is configured. Each fastener 21 is formed integrally with the nozzle 1.

  As shown in FIG. 6, the molded body (the developed body of the nozzle 1) described above has a pair of side walls 25, 26 that are formed in a triangular cross section on both sides in the width direction of the nozzle portion 6 and whose inner side faces each other. have. The molded body is bent at the connecting portions 17 and 18, and the half shells 15 and 16 are rotated around the connecting portions 17 and 18 (deployment shafts), whereby the end faces 25a on one side of the side walls 25 and 26, 26 a is in close contact with each end face 15 b of the upper half shell 15, and end faces 25 b, 26 b on the other side of the side walls 25, 26 are in close contact with each end face 16 b of the lower half shell 16. It is configured.

  As shown in FIG. 1 and FIG. 7, each half shell 15 is formed on the inner side surfaces 9 a, 10 a (outflow side facing surfaces) of the pair of front walls 9, 10 of each half shell 15, 16 of the body portion 7. , 16 and a plurality of diffusion plates 22 (diffusion portions) formed in a wall shape extending at the same height as the side walls 13, 14 and extending over the entire width of the front walls 9, 10. The diffusion plates 22 are alternately arranged at predetermined intervals in the front-rear direction (left-right direction in FIG. 7) on each of the inner side surfaces 9a, 10a of the pair of front walls 9, 10. In this embodiment, the inner side surfaces A total of three diffusion plates 22 are provided, one on 9a (upper side) and two on the inner side surface 10a (lower side). Thereby, in the process from the connecting pipe 4 to the nozzle part 6, the drug is uniformly diffused over the entire width of the nozzle part 6 by the diffusion plates 22 arranged alternately in the upper and lower sides inside the body part 7. It has become.

  As shown in FIG. 8, the container 2 includes a body portion 32 having a substantially cylindrical shape and a head portion that is flattened in comparison with a conventional ratio (for example, a comparison with a commercially available typical oil mug). 33, and the head 33 is provided with a nozzle connection tube 3 (connection port) and a medicine injection port 34. The medicine injection port 34 is disposed near the rear part of the head, and is opened on one plane inclined with respect to the horizontal plane. In other words, the medicine injection port 34 is opened as if it was cut out with one plane inclined with respect to the horizontal plane. doing. The container 2 also has a handle 35 that extends vertically from the bottom right to the bottom of the drug injection port 34. The inside of the handle 35 is formed in a wave shape to prevent hand slipping.

  The medicine spreader 31 is attached with a connecting member 27 shown in FIG. 9 formed in a substantially cylindrical shape. The connecting member 27 is formed with an internal thread 28 on which the male thread 8 of the connecting pipe 4 of the nozzle 1 is screwed on the inner peripheral surface of one end (the upper side in FIG. 9), and the other side (the lower side in FIG. 9). ) Is formed with a flange 30. And in the chemical | medical agent spreader 31 of this embodiment, the internal thread (illustration omitted) formed in the internal peripheral surface of the fixing ring 36 (fixing member, refer FIG. 10) which penetrated the connection member 27 beforehand is the container 2. The flange 30 of the connection member 27 is pressed against the end surface of the nozzle connection tube 3 of the container 2 by being screwed and tightened to the male screw 37 formed on the outer peripheral surface of the nozzle connection tube 3 (connection port). 1 is attached to the container 2.

  Moreover, in the medicine spreader 31 of the present embodiment, between the nozzle 1 and the container 2, more specifically, between the flange 30 of the connecting member 27 attached to the nozzle 1 and the end face of the nozzle connecting tube 3 of the container 2. A screen member 38 shown in FIG. 11 is interposed therebetween. The screen member 38 has a structure in which a plurality of holes 39 are formed in a disk, and the flow rate of the medicine flowing from the container 2 to the nozzle 1 is controlled by selecting the diameter and the number of the holes 39. Yes.

  The operation of this embodiment will be described. First, the molded body (deployment body of the nozzle 1) shown in FIGS. 5 and 6 is bent at the connecting portions 17 and 18, and the half-shell bodies 15 and 16 are rotated inward 90 ° around the respective deployment axes. Then, each convex part 19 of the positioning means is engaged with each corresponding concave part 20. Thereby, the two half shells 15 and 16 are relatively positioned, and the half surface 15a of the half shell 15 and the half surface 16a of the half shell 16 coincide (align). Next, each buckle 21b facing each protrusion 21a is engaged, and each fastener 21 is fastened. Thereby, the half shell 15 and the half shell 16 are fastened, and the half surface 15a of the half shell 15 and the half surface 16a of the half shell 16 are in liquid-tight contact. By assembling the molded body in this way, a single male screw 8 is formed on the outer peripheral surface of the connecting pipe 4.

  Next, the male screw 8 of the connecting pipe 4 of the nozzle 1 assembled in this way is screwed into the female screw 28 of the connecting member 27 that has passed through the fixing ring 36 (fixing member) and tightened. The screen member 39 is disposed between the nozzle 1 and the container 2, more specifically, between the flange 30 of the connection member 27 attached to the nozzle 1 and the end surface of the nozzle connection pipe 3 (connection port) of the container 2. By interposing, a female screw formed on the inner peripheral surface of the fixing ring 36 is screwed into a male screw 37 formed on the outer peripheral surface of the nozzle connection tube 3 of the container 2, and the fixing ring 36 is tightened. Thereby, as shown in FIG.10 and FIG.11, the nozzle 1 is attached to the container 2 and the chemical | medical agent spreader 31 is obtained.

  When the medicine (liquid pesticide preparation) is sprayed on the vegetable seedlings stored in the cell tray 41 (nursery seedling box, see FIG. 12) using the medicine spreader 31 thus obtained, first, the handle 35 of the container 2 is removed. Holding the medicine sprayer 31 at an appropriate position, the medicine spreader 31 is tilted and moved in one direction to spray the medicine contained in the container 2. Here, the medicine that has flowed into the nozzle 1 from the container 2 is diffused to both sides in the width direction by each diffusion plate 22 (diffusion part) in the process of reaching the downstream nozzle part 6, and covers the entire width direction of the nozzle part 6. Evenly, in other words, it is uniformly distributed to each hole 5 of the nozzle portion 6.

[Watering test to cell tray (nursery seedling box)]
As shown in FIG. 12, each cell 43 (nursing pot, see FIG. 14) accommodated in each cell accommodating portion 42 of the cell tray 41 when the cell tray 41 is sprayed using the drug spreader 31 of the present embodiment. ), And each cell 43 accommodated in each cell accommodating portion 42 of the cell tray 41 when water is sprayed on the cell tray 41 by using a commercially available typical watering (hereinafter simply referred to as watering). A test was conducted to compare the amount of water injected into the water. For the test, a cell tray of 8 columns × 16 columns shown in FIG. 15 was used. As shown in FIG. 13, the test was carried out by arranging three cell trays 41 in a continuous manner. Further, in the test, the medicine spreader 31 and the water heater are moved in the vertical direction of the cell tray, that is, moved in one direction from the left side to the right side in FIG. 15 to correspond to 1.5 L of water (corresponding to three cell trays 41). Water).

  Of the three cell trays 41 arranged vertically, the first horizontal row (column A in FIG. 15; the same applies hereinafter), the fourth horizontal row (B row), the seventh horizontal row of the cell trays 41 arranged at the center. The cells 43 are set in the cell accommodating portions 42 in the column (C column), the horizontal 10th column (D column), the horizontal 13th column (E column), and the horizontal 16th column (F column). The measurement result of measuring the water injection amount was used as the test result of the water spray amount. In addition, the average value at the time of performing watering 3 times was employ | adopted for each of the chemical spreader 31 and the watering device for the test result of the watering amount. Further, as shown in FIG. 14, each cell 43 accommodated in the cell tray 41 is sealed at the bottom by a sealing member 44 such as an adhesive tape, so that the sprinkled water accumulates at the bottom. ing. Further, as described above, the width of the nozzle portion 6 of the drug spreader 31 is set to 300 mm in accordance with the cell tray 41 of 300 mm (width) × 450 mm (full length).

  (A) of FIG. 16 is a table | surface which shows the test result at the time of watering the cell tray 41 using the chemical | medical agent spreader 31 of this embodiment. On the other hand, FIG. 16B is a chart showing test results when watering the cell tray 41 using a watering can as a comparison target. Note that 1 to 8 and A to F in FIG. 16 correspond to 1 to 8 and A to F in FIG. As shown in FIG. 16 (B), in the watering by watering, each cell 43 arranged in the center in the width direction (vertical direction in FIG. 15) of the cell tray 41 in the A to E rows (see FIG. 15). That is, the water injection amount (0 to 1.9 ml) to each cell 43 accommodated in the cell accommodating part 42 in the vertical fourth row and vertical fifth row (see FIG. 15) is arranged on both sides in the width direction of the cell tray 41. In addition, the amount of water sprayed is remarkably smaller than the amount of water injected (3.0 to 4.0 ml) into each cell 43, that is, each cell 43 accommodated in the cell accommodating portion 42 in the first vertical column and the eighth vertical column. It can be understood that there is a large variation in the width direction of the cell tray 41, in other words, the amount of water spray tends to be small at the center of the cell tray 41 in the width direction and large on both sides in the width direction.

  On the other hand, as shown in FIG. 16A, in the watering by the medicine spreader 31, the watering in the width direction of the cell tray 41 is compared with the watering by the water shown in FIG. It can be seen that the variation in the amount of water, that is, the deviation in the amount of water spray has been greatly improved. In particular, in sprinkling with water, the amount of water injected into each cell 43 arranged in the center in the width direction of the cell tray 41 was remarkably small as 0 to 1.9 ml, but in sprinkling with the chemical spreader 31, the amount of water injected was 0 to 1.9 ml. There is no cell 43. Thus, in the watering by the chemical spreader 31, the amount of water spraying (over the entire area in the width direction (horizontal direction, vertical direction in FIG. 15) and length direction (vertical direction, horizontal direction in FIG. 15) of the cell tray 41 ( It is possible to eliminate variation in the amount of water injected into each cell 43, and water can be injected into each cell 43 accommodated in the cell tray 41 in a uniform amount.

表１は、本実施形態の薬剤散布器３１による散水の試験結果及びジョウロによる散水の試験結果の平均と標準偏差とを示している。なお、薬剤散布器３１による散水の試験結果とジョウロによる散水の試験結果とは、各々、セルトレイ４１の幅方向（図１５及び図１７における上下方向）に略対称である（例えば、セルトレイ４１の図１７におけるＡ１に対応する位置に配置されたセル４３への注水量とＡ８に対応する位置に配置されたセル４３への注水量とは略等しい）。

Table 1 shows the average and standard deviation of the water spray test result by the chemical spreader 31 and the water spray test result by the water sprayer of this embodiment. In addition, the water spray test result by the chemical spreader 31 and the water spray test result by the water sprayer are substantially symmetrical in the width direction of the cell tray 41 (vertical direction in FIGS. 15 and 17), respectively (for example, FIG. 17), the amount of water injected into the cell 43 disposed at the position corresponding to A1 and the amount of water injected into the cell 43 disposed at the position corresponding to A8 are substantially equal.

  Therefore, Table 1 shows the first column of the cell tray 41 (A1 in FIG. 17) from the population constituted by the watering test result by the drug spreader 31 and the population constituted by the watering test result by the water sprayer. , B1, C1, D1, E1, F1), second vertical column (A2, B2, C2, D2, E2, F2 in FIG. 17), third vertical column (A3, B3, C3, D3, E3 in FIG. 17). , F3) and the fourth column (A4, B4, C4, D4, E4, F4 in FIG. 17) as test specimens to obtain the sample group of the drug spreader 31 and the sample group of the water sample. The result of calculating the average and the standard deviation is shown.

  From Table 1 and FIG. 18, the water sprayed by the chemical spreader 31 has a larger amount of water injected per cell 43 (average μ) than the water sprayed by the water spray, and the variation in the water injected amount between the cells 43 (standard). It can be seen that the deviation σ) is small. In addition, as a result of performing t-test at a significance level of 5% using the sample taken out, the test result of water spraying by the drug spreader 31 of the present embodiment and the test result of water spraying by a typical watering machine as a comparison target Could conclude that there was a significant difference. The index t used for the t test can be calculated by existing spreadsheet software.

This embodiment has the following effects.
According to the present embodiment, since the medicine can be uniformly sprayed on the vegetable seedlings accommodated in the cell tray simply by moving the medicine spreader 31 in one direction, the efficiency of the medicine spraying operation can be greatly improved. And the burden on the operator can be reduced. Furthermore, by providing the handle 35 of the container 2 from the vicinity of the drug injection port 34 to the vicinity of the bottom portion, the operator can adjust the gripping position as necessary. As a result, the container 2 can be adjusted. This makes it easier to achieve a balance when tilting, so that the burden on the operator can be reduced.
In addition, since the nozzle 1 is manufactured by forming a molded body in which the nozzle 1 is developed, the degree of freedom in design can be expanded, for example, by freely setting the shape and arrangement of the diffusion plate 22 (diffusion part). . Thereby, the nozzle 1 can be configured so that the medicine is spread over the entire width direction of the nozzle portion 6, in other words, the medicine is uniformly distributed to each hole 5 of the nozzle portion 6. Further, by integrally forming the fastener 21 and the positioning means (the convex portion 10 and the concave portion 20) with the nozzle 1, an increase in the number of parts and the manufacturing cost can be suppressed.
Further, a screen member 38 is provided between the nozzle 1 and the container 2, more specifically, between the flange 30 of the connection member 27 attached to the nozzle 1 and the end surface of the nozzle connection pipe 3 (connection port) of the container 2. Since it is interposed, the flow rate of the medicine flowing from the container 2 to the nozzle 1 can be controlled. Thereby, it is possible to prevent the medicine from flowing from the container 2 to the nozzle 1 at a large flow rate, to effectively act on the diffusion plate 22, and to distribute the medicine more uniformly over the entire area in the nozzle width direction. It becomes possible.
Further, since the medicine injection port 34 of the container 2 is opened on one plane inclined with respect to the horizontal plane, in other words, it is opened as if it was cut out with one plane inclined with respect to the horizontal plane, The capacity can be secured, and even when the container 2 is tilted relatively vigorously, the medicine can be prevented from spilling from the left and right of the medicine injection port 34.

1 nozzle, 2 container, 3 nozzle connection pipe (connection port), 4 connection pipe, 5 holes, 6 nozzle part, 7 body part, 15, 16 half shell, 15a, 16a half face, 22 diffusion plate (diffusion part) ), 31 medicine spreader, 34 medicine inlet, 35 handle, 38 screen member

Claims (9)

A nozzle that is connected to a connection port of a container that stores a drug and that spreads the drug stored in the container, and that extends in a width direction of the nozzle, a connection pipe connected to the connection port of the container, A nozzle part in which a plurality of holes for allowing the medicine introduced through the connection pipe to flow out is arranged in at least one row, and is provided between the connection pipe and the nozzle part, from the connection pipe to the nozzle part. have a, and the body having a hollow portion where the height is reduced with the width is enlarged toward the, inside of the barrel, with a width toward the nozzle portion from the connection pipe is expanded A pair of inflow-side facing surfaces whose mutual distance is reduced, and one side is connected to the pair of inflow-side facing surfaces and the other side is connected to the nozzle portion so that the width is constant and the mutual distance A pair of outflow side opposites with constant And a wall-like shape for diffusing the flow of the drug flowing in the width direction of the nozzle and flowing down from the connection pipe toward the nozzle portion in the width direction of the nozzle. A diffusing portion is disposed, the diffusing portion is formed in the entire width of the nozzle, and is alternately disposed at predetermined intervals in the axial direction of the connecting pipe on each of the pair of outflow side facing surfaces. Nozzle. The connecting pipe and the body are divided into two half shells in the height direction of the nozzle by a plane including an axial plane of the connecting pipe, and each half shell is developed on both sides of the nozzle part. The nozzle according to claim 1, wherein the nozzle is molded from the molded body. The nozzle according to claim 2, wherein a plurality of fasteners for holding the two half-shells in a state in which the half-split surfaces are in close contact with each other are disposed on an outer wall surface of the body portion. . 4. A positioning means for relatively positioning the two half-shells by engaging a convex part of one half-shell with a corresponding concave part of the other half-shell. The nozzle described. The nozzle according to claim 3 or 4, wherein the fastener and the positioning means are integrally formed with the two half-shells. A drug spreader comprising the nozzle according to any one of claims 1 to 5 . The medicine spreader according to claim 6 , further comprising a screen member for controlling a flow rate of the medicine flowing from the container to the nozzle. The drug spreader according to claim 6 or 7 , wherein the container is formed in a size cylinder, and a drug injection port that opens on a flat surface is provided at an upper part thereof. The drug spreader according to any one of claims 6 to 8 , wherein the container has a handle extending vertically from the vicinity of the drug injection port to the vicinity of the bottom.

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