JP5096773B2 - Liquid spray method and traveling spray apparatus using two-way injection nozzle - Google Patents

Description

  The present invention relates to a two-way spray nozzle that sprays chemical liquids such as agricultural chemicals and liquid fertilizer and other liquids, and a traveling spray device using the two-way spray nozzle.

  Conventionally, this type of two-way injection nozzle is known as described in Patent Document 1 below. The two-way injection nozzle described in Patent Document 1 has a first flow path and a second flow path that are bifurcated at the tip of a main flow path formed in a nozzle body that is transported, and obliquely conveys a chemical solution in the transport direction. The spray port of the first channel is disposed so as to spray backward, and the spray port of the second channel is disposed so as to spray the chemical liquid obliquely forward in the transport direction. According to this two-way injection nozzle, there is an advantage that the chemical solution can be sprayed over almost the entire plant by passing above the plant such as fruits, vegetables, and tree planting. In this case, the particle size of the mist sprayed from the spray port of the first flow path is substantially the same as the particle size of the mist sprayed from the spray port of the second flow path, and the medicinal solution is distributed to the details of the plant. For this reason, fine mist particles are sprayed.

Japanese Patent Laid-Open No. 2-9465

  However, in the two-way injection nozzle described in Patent Document 1, the particle size of the mist sprayed from the spray port of the first flow path is substantially the same as the particle size of the mist sprayed from the spray port of the second flow path. Therefore, when both the mist sprayed from the spray port of the first flow path and the mist sprayed from the spray port of the second flow path are fine, the fine liquid particles spread and adhere to the details of the plant. Therefore, a chemical effect with high insecticidal and bactericidal properties can be obtained. On the other hand, fine mist particles tend to float in the air, and the mist particles scatter on the wind, reach the distant place by the so-called drift phenomenon, and in the adjacent vegetable garden where some kind of chemical spraying is prohibited There was a risk of spraying unnecessarily. On the contrary, when the liquid droplets from the spraying port of the first flow path and the liquid particles from the spraying port of the second flow path are both coarse, the drift amount is reduced, but the liquid particles are difficult to reach the details of the plant, and the chemical effect This causes the problem of low.

  The present invention has been made in view of the above-described conventional problems, and is a two-way injection nozzle capable of spraying and adhering liquid particles over the details of an object to be sprayed and reducing the drift amount. It is another object of the present invention to provide a traveling spray device.

To achieve the above object, the present onset Ming, using two-way spray nozzle for spraying the first and second channels in the spray nozzle provided respectively formed in the nozzle body liquid different orientations In the method of spraying the liquid, the particle diameter of the liquid sprayed from the first flow path obliquely downward to the rear in the transport direction while moving the two-way injection nozzle forward is set to be inclined obliquely downward from the second flow path to the front in the transport direction. are the configuration you spraying liquid and relatively larger than the particle size of the liquid sprayed in.

The traveling spray apparatus according to the present invention includes a bidirectional spray nozzle that sprays liquid in different directions from spray ports provided in the first flow path and the second flow path formed in the nozzle body, respectively. Ri Na and and a transport vehicle for transporting equipped with a two-way spray nozzle in the traveling spray device for spraying a liquid from a two-way injection nozzle while advancing the conveying vehicle, the rear obliquely downward liquid transport direction The spray port of the first flow path is disposed so that the liquid is sprayed, and the spray port of the second flow path is disposed so that the liquid is sprayed obliquely downward in the transport direction, and sprayed from the first flow path. that is shall such a particle size comprises a mist particle size adjusting means for relatively larger than the particle size of the liquid sprayed from the second flow path of the liquid.

According to the method of spraying a liquid using the two-way injection nozzle according to the present invention, the particle size of the liquid sprayed from the first channel is relatively larger than the particle size of the liquid sprayed from the second channel. Since it is enlarged, liquid particles having different particle diameters can be sprayed at once in different directions, and liquid particles having different particle diameters can be appropriately selected according to the use situation.

Further , according to the traveling spray device according to the present invention, the transport vehicle carries and transports the two-way injection nozzle, so that the liquid spraying operation can be performed easily and quickly compared to the case of the manual transport operation. . In addition, the spray port of the first flow path is disposed so as to spray the liquid obliquely downward and backward in the transport direction , and the spray port of the second flow path is disposed so as to spray the liquid obliquely downward and forward of the transport direction, Further, the particle diameter of the liquid sprayed from the first flow path is made relatively larger than the particle diameter of the liquid sprayed from the second flow path , and further the liquid is sprayed from the two-way injection nozzle while the transporting vehicle is advanced. since, fine Ekitsubu sprayed from the second flow path is knocked off by colliding with the large liquid particles of particle size that is sprayed from the first passage of the trailing difficult scatter. Thereby, the drift amount of a fine liquid particle can be reduced and the trouble to the surroundings can be prevented.

The best embodiment of the present invention will be described with reference to the drawings. The embodiment described below is merely an example embodying the present invention, and does not limit the technical scope of the present invention. FIG. 1 is an external view of a two-way injection nozzle according to an embodiment of the present invention, FIG. 2 is a side sectional view of the two-way injection nozzle, and FIG. 3 is an exploded perspective view of a part of the two-way injection nozzle. is there.
In each figure, a two-way injection nozzle 1 according to this embodiment includes a nozzle body 2 in which a main flow path 5 is formed, a connecting pipe 6 connected to the nozzle body 2 by a union nut 8, and a main flow path 5. There are provided orifice plates 13 and 11 respectively provided in the first flow path 5A and the second flow path 5B of the nozzle body 2 branched in a bifurcated shape at the tip. A connecting pipe 6 of the two-way injection nozzle 1 is connected to a water supply pipe 10 through a fixture 9 so that water can pass therethrough. The water supply pipe 10 can be transported manually or by in-vehicle driving.

  The nozzle body 2 includes an injection pipe 4 having a first flow path 5A and a second flow path 5B, and a base pipe 3 having a main flow path 5. The injection pipe 4 includes a main pipe part 4C connected to the base pipe 3, and branch pipe parts 4A and 4B which are formed to be divided into two branches from the main pipe part 4C and have a first flow path 5A and a second flow path 5B. ing. Note that the outer shape of the injection tube 4 is not necessarily a bifurcated shape having the branch tube portions 4A and 4B, and may be integrally formed as a lump. The base tube 3 is formed with a large-diameter portion 28 at the top of the main flow path 5 and an outside air inlet 24 communicating with the main flow path 5. The large-diameter portion 28 of the base tube 3 is provided with an orifice plate 25 with an injection port 26 that generates an outside air suction action, and a filter 29 disposed at an upstream position of the orifice plate 25. The upper end portion of the base tube 3 is connected to the connection tube 6 by a union nut 8. Reference numerals 16, 23, and 27 in the drawings indicate O-rings, respectively.

  A core 15A, an O-ring 16 and an orifice plate 13 are attached to the tip of the branch pipe portion 4A and fixed with a cap 7. Similarly, a core 15B, an O-ring 16 and an orifice plate 11 are attached to the distal end of the branch pipe portion 4B and fixed with a cap 7. In the core 15A, a pair of positioning projections 19 and 19 are vertically provided at diagonal positions on the lower surface of the disk-shaped main body, and a pair of positioning projections are formed on the upper surface of the disk-shaped main body at a diagonal position perpendicular to the diagonal line connecting the positioning protrusions 19 and 19. Protrusions 17 and 17 are erected. In the inner position adjacent to the positioning protrusions 17 and 17 in the core 15A, a pair of water flow ports 18 and 18 through which the liquid from the first flow path 5A passes are formed. A convex portion 20 is erected on the disk-shaped main body between the water inlets 18 and 18. The core 15B has the same basic structure as the core 15A except that the upper surface of the disk-shaped main body does not have the convex portion 20. The positioning protrusions 19, 19, 19, 19 of the cores 15A, 15B are inserted into positioning grooves 21, 21 formed on the inner peripheral surface of the distal end opening of the branch pipe portions 4A, 4B. As a result, the cores 15A and 15B are locked against the branch pipe portions 4A and 4B.

As shown in FIG. 4, the orifice plate 13 has a base formed in a disk shape, and a bulging portion 30 that is long in the diameter direction protrudes forward. The back surface portion of the bulging portion 30 is a recess 32. A spray port 14 is formed at the front center position of the orifice plate 13, that is, at the center position in the longitudinal direction of the bulging portion 30. The spray port 14 is formed in a rectangular shape that is long in a direction orthogonal to the longitudinal direction of the bulging portion 30. By positioning projections 17, 17 of the core 15A at both ends of the recess 32 is charged, the orifice plate 13 is adapted to be locked detent engagement to the core 15A. The protrusion 20 of the core 15A is disposed slightly behind the spray port 14 behind the spray port 14 in the space 22A. The orifice plate 13 is disposed at the tip of the first flow path 5A in such a direction that the liquid from the spray port 14 is sprayed obliquely downward (in the direction of arrow H in FIGS. 1 and 2). Further, the orifice plate 13 is arranged so that the longitudinal direction of the bulging portion 30 faces the front-rear direction (the conveyance direction F in a traveling spray device 50 (FIG. 7) described later).

  As shown in FIG. 5, the orifice plate 11 has a base formed in a disk shape, and a bulging portion 31 that is long in the diameter direction protrudes forward. The bulging portion 31 is formed in an array shape in which a central portion in the longitudinal direction is narrower than both end portions. The width dimension in the short direction of the bulging part 31 is set smaller than the width dimension in the short direction of the bulging part 30 of the orifice plate 13 described above. The back surface portion of the bulging portion 31 is a recess 33. A spray port 12 is formed at the front center position of the orifice plate 11, that is, the longitudinal center position of the bulging portion 31. The spray port 12 is formed in a rectangular shape that is long in the longitudinal direction of the bulging portion 31 when viewed from the front, and the opening area thereof is set smaller than the opening area of the spray port 14 of the orifice plate 13 described above. When the positioning projections 17 and 17 of the core 15B are inserted into both end portions of the concave portion 33, the orifice plate 11 is locked against the core 15B. Unlike the case where the orifice plate 13 and the core 15A are combined, the space 22B between the concave portion 33 of the orifice plate 11 and the core 15B is a wide space 22B without the protrusion 20. The orifice plate 11 is disposed at the tip of the second flow path 5B in such a direction that the liquid from the spray port 12 is sprayed obliquely downward (in the direction of arrow G in FIGS. 1 and 2). The orifice plate 11 is also arranged so that the longitudinal direction of the bulging portion 31 faces the front-rear direction.

  Next, the operation of the two-way injection nozzle 1 configured as described above will be described. First, the two-way injection nozzle 1 attached to the water supply pipe 10 is put over a vegetable such as cabbage. When the cock (not shown) of the water supply pipe 10 is opened, the chemical solution supplied from the pressure pump (not shown) through the water supply pipe 10 flows into the large diameter portion 28 of the base pipe 3 from the connection pipe 6 and is filtered. 29, and is ejected from the ejection port 26 of the orifice plate 25 into the main flow path 5. The chemical liquid ejected into the main channel 5 is mixed with the outside air sucked from the outside air inlet 24 to form a gas-liquid mixed flow. The gas-liquid mixture from the main flow path 5 is divided into the first flow path 5A and the second flow path 5B, and flows into the spaces 22A and 22B from the water inlets 18, 18, 18, and 18 of the cores 15A and 15B. The mixture gas flowing into the space 22A is sprayed obliquely downward (in the direction of arrow H) as mist from the spray port 14 of the orifice plate 13, and the mixture gas flowing into the space 22B is fogged from the spray port 12 of the orifice plate 11. Sprayed forward and obliquely downward (arrow G direction) as particles. The spray patterns of the mist sprayed from the spray port 14 and the mist sprayed from the spray port 12 are both long in the left-right direction (horizontal direction perpendicular to the transport direction F in the traveling spray device 50 described later). It is oval or oval.

  Therefore, according to this two-way injection nozzle 1, a chemical solution can be sprayed from two directions to plants such as vegetables, fruits, and tree planting. When the two-way spray nozzle 1 is conveyed so as to pass over the plant, the chemical solution is sprayed from the spray port 12 of the orifice plate 11 to the rear part of the plant before passing upward, and before passing through the plant, The chemical solution can be sprayed evenly, such as spraying the chemical solution from the top and further spraying the chemical solution from the spray port 14 of the orifice plate 13 to the front part of the plant after passing upward. Alternatively, when the two-way injection nozzle 1 is arranged upside down and transported so as to pass under the plant, it is possible to spray the chemical solution obliquely upward to the branches and leaf backs in the high place.

  In addition, in the two-way injection nozzle 1, (1) the stirring flow in the space 22A is restricted by the presence of the convex portion 20 of the core 15A in the first flow path 5A, and (2) the spray port of the orifice plate 13 Since the opening area of 14 is set larger than the opening area of the spray port 12 of the orifice plate 11, the particle size of the mist S1 sprayed from the spray port 14 of the orifice plate 13 is the spray port of the orifice plate 11. 12 is larger than the particle size of the mist S2 sprayed from the nozzle 12. That is, the space 22A formed between the core 15A and the orifice plate 13, the arrangement of the projections 20 in the space 22A, and the configuration including the opening shape, direction, and opening area of the spray port 14 are the mist particles in this embodiment. It becomes the diameter adjusting means 40. Therefore, the two-way spray nozzle 1 can spray liquid particles having different particle sizes at once in different directions.

  Here, the particle size of the mist sprayed from the spray port 14 and the particle size of the mist sprayed from the spray port 12 were measured. Such particle size is measured at a height of 30 cm below the two-way injection nozzle 1 by applying laser light to the respective spray patterns of the mist sprayed from 12, 14 in the horizontal direction (the length of each spray pattern). Direction) and measured. The particle size measurement results of each mist are shown in Table 1 below.

  As is apparent from Table 1, when the spray pressure is 1.0 to 2.0 MPa, the particle size of the mist sprayed from the spray port 12 of the second flow path 5B is 296 to 191 μm, and the spray of the first flow path 5A. The particle size of the mist sprayed from the mouth 14 is 361 to 242 μm, and it can be seen that the mist sprayed from the spray port 14 of one flow path 5A has a larger particle size. Moreover, it turns out that a particle size becomes larger when the spraying pressure is lowered in both mists.

  And the above-mentioned two-way injection nozzle 1 is used for the traveling spray device 50 as shown in FIGS. In this traveling spray device 50, a horizontal boom 53 protrudes from the side of a transport vehicle 51 that travels by rotation of wheels 52, 52,..., And a chemical solution supply tank 54 is provided on the upper surface of the transport vehicle 51. Is installed. The boom 53 is provided with a water supply pipe 10 connected to a tank 54 and a pressure pump (not shown), and a plurality of two-way injection nozzles 1, 1, 1, 1. 9 is attached. In the two-way injection nozzle 1 of the traveling spray device 50, the first flow path is sprayed so that the mist S1 sprayed from the spray port 14 is sprayed obliquely backward in the conveying direction (arrow F direction) by the traveling spray device 50. An orifice plate 13 of 5A is arranged at the rear of the two-way injection nozzle 1, and the second flow path 5B is sprayed so that the mist S2 sprayed from the spray port 12 is sprayed obliquely forward in the transport direction by the traveling spray device 50. An orifice plate 11 is disposed in front of the two-way injection nozzle 1.

The traveling spray device 50 having such a configuration is used for spraying medicines on vegetables 60 and the like grown in the field. Therefore, when the traveling spray device 50 travels through the field, it is finely applied from the spray port 12 of the orifice plate 11 to the vegetable 60 in front of the conveying direction (arrow F direction) of the two-way spray nozzles 1, 1, 1,. By spraying the mist particles S2, S2, S2,... That are easily adhered to the surface, a chemical effect with high insecticidal and bactericidal properties can be obtained. The vegetable 60 sprayed with the mist S2 from the spraying port 12 sprays coarse mists S1, S1, S1,... From the spraying port 14 of the orifice plate 13 as the traveling spray device 50 travels. receive.
By the way, since the mist S2 ejected from the aforementioned branch pipe portion 4B is fine, it is likely to spread by wind or the like after ejection from the spray port 12. However, the fine mists S2, S2, S2,... That have expanded after being ejected from the spray port 12 are coarse mists S1, S1, S1,. It is hard to scatter and be struck down. Thereby, the drift amount of mist can be reduced, and the trouble to the surroundings can be prevented. As a result, it is possible to perform the spraying work without reducing workability.

  In the traveling spray device of the above-described embodiment, the two-way injection nozzle is mounted on the vehicle body and transported. However, the two-way injection nozzle of the present invention is not limited to this, for example, it is carried by a person. The two-way spray nozzle can be transported by attaching a portable shoulder boom that can be attached and moving a person carrying the portable shoulder boom.

  Further, in the above, as the mist particle size adjusting means for making the particle size of the liquid sprayed from the first flow channel relatively larger than the particle size of the liquid sprayed from the second flow channel, Although the 1st flow path side mist particle diameter expansion structure which enlarges the particle size of the liquid to be performed was illustrated, this invention is not limited to it. For example, the second channel side mist particle size reduction configuration is provided in which the particle size of the liquid sprayed from the second channel is relatively smaller than the particle size of the liquid sprayed from the first channel. The flow path side mist particle size reduction configuration may be used as the mist particle size adjusting means of the present invention.

  In the above description, the main flow path 5 is formed on the end side of the nozzle body 2 and the first flow path 5A and the second flow path 5B branching into a bifurcated shape at the tip of the main flow path 5 are shown. The first flow path and the second flow path according to the present invention may be arranged in parallel to the nozzle body as flow paths independent from each other, instead of being branched.

  In the two-way injection nozzle according to the present invention, the opening angle formed by the first flow path and the second flow path (for example, the angle formed by the arrow H and the arrow G in FIG. 2) is not particularly limited, but is preferably 30. It is preferable to set the angle between 120 degrees and 120 degrees. When the opening angle is less than 30 degrees, the liquid particles sprayed from each of the spraying port of the first flow channel and the spraying port of the second flow channel are too close, and these spraying states are the conventional flat type. It becomes close to the sprayed state sprayed in a flat shape from the nozzle, and the adhesion performance of the liquid particles to the sprayed object, which is one of the purposes, is inferior. In addition, for example, each branch pipe part must be formed long so as not to interfere with the branch pipe part forming the first flow path and the branch pipe part forming the second flow path, which is impractical in terms of nozzle production. There is also a problem. On the other hand, when the opening angle exceeds 120 degrees, the reaching distance until the fine liquid particles sprayed from the spray port of the second flow path reach the object to be sprayed is increased, and the second flow Since the time until the fine liquid particles sprayed from the road are knocked down by the coarse liquid particles sprayed from the first flow path becomes long, the liquid sprayed easily becomes affected by the drift phenomenon. There is a possibility that the grains may fly to a place other than the target spray target.

  The direction in which the first flow path 5A faces (the direction indicated by the arrow H in FIGS. 1 and 2) and the direction in which the second flow path 5B faces (the direction indicated by the arrow G in FIGS. 1 and 2) are vertical. The inclination angle from the direction does not necessarily have to be a symmetrical angle. However, when the inclination angle of the second flow path 5B with respect to the vertical direction is larger than the inclination angle of the first flow path 5A with respect to the vertical direction, more fine liquid particles are sprayed forward in the traveling direction and drift after spraying. Since the fine liquid particles can be knocked down with the coarse liquid particles from the first flow path 5A, the adhesion performance is further improved and the drift phenomenon can be further suppressed.

It is an external view of the two-way injection nozzle concerning one embodiment of the present invention. It is a sectional side view of the two-way injection nozzle. It is a disassembled perspective view of a part of the bidirectional injection nozzle. The one orifice plate used for the said two-way injection nozzle is shown, Comprising: (a) is a front view, (b) is a rear view, (c) is the AA arrow directional cross-sectional view in (a), ( d) is a sectional view taken along line BB in (a). The other orifice plate used for the said bidirectional injection nozzle is shown, Comprising: (a) is a front view, (b) is a rear view, (c) is CC sectional view taken on the line in (a), d) is a sectional view taken along line D-D in (a). It is a front view of the traveling spray apparatus using the two-way injection nozzle. It is a side view of the said traveling type spraying apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Two direction injection nozzle 2 Nozzle main body 5 Main flow path 5A 1st flow path 5B 2nd flow path 10 Water supply pipe 11 Orifice plate 12 Spray port 13 Orifice plate 14 Spray port 20 Convex part 22A Space 30 Swelling part 32 Concave part 40 Mist Diameter adjusting means 50 Traveling spray device 51 Conveying vehicle 53 Boom F Arrow G Arrow H Arrow S1 Mist S2 Mist

Claims (2)

In a method of spraying liquid using a two-way spray nozzle that sprays liquid in different directions from spray ports provided respectively in a first flow path and a second flow path formed in the nozzle body, the two-way spray nozzle while advancing, the particle size of the liquid to be sprayed to the rear obliquely downward in the conveying direction from the first flow path, relatively than the particle size of the liquid to be sprayed forward and obliquely downward in the conveying direction from the second flow path liquid spray method for largely to said spray to Rukoto liquid. A two-way injection nozzle that sprays liquid in different directions from the spray ports respectively provided in the first flow path and the second flow path formed in the nozzle body , and a transport vehicle that carries the two-way spray nozzle and transports it Ri Na comprises a preparative, in the traveling spray device for spraying a liquid from a two-way injection nozzle while advancing the conveying vehicle, spraying of the first flow path such that the liquid is sprayed to the rear obliquely downward in the transporting direction The nozzle is arranged, and the spray port of the second flow path is arranged so that the liquid is sprayed obliquely downward in the transport direction, and the particle size of the liquid sprayed from the first flow path is sprayed from the second flow path. traveling spray device according to claim Rukoto such comprises a mist particle size adjusting means for relatively larger than the particle size of the liquid to be.

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