JPH0614805Y2 - Spray head structure of a chemical spraying vehicle - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a spray head structure of a chemical spraying vehicle for spraying a chemical liquid, and more particularly to a spray head structure in which the nozzle position of the spray head is changed to adjust the reachability of spray. Is.

[Conventional technology]

A speed sprayer used for control in orchards has a spray head that opens to the side and upward of the speed sprayer, sprays a chemical solution in a mist form from the nozzle of the spray head, and sprays the spray from a blower. It is transported in the wind and sprayed on trees.

The nozzles are arranged in front of and behind the speed sprayer in groups in the front-rear direction of the spray head, and in a conventional speed sprayer (eg, Japanese Utility Model Laid-Open No. 58-19772, etc.), the direction of the nozzle can be adjusted. However, the nozzle positions in the circumferential direction and the radial direction of the jet head are fixed in both the front nozzle group and the rear nozzle group.

[Problems to be solved by the device]

The spray from each nozzle disperses to the surroundings in a conical spread, but within the distance until the conical spray from each nozzle intersects, a dead angle of the spray occurs, and there is a spray target within the intersecting distance. In this case, there is unevenness in the adherence of the chemical liquid on the object to be sprayed.

Also, when the transport wind is strong, the spread angle of the conical spray from the nozzle is small and the spray reaches a long distance. On the other hand, when the transport wind is weak, the spread angle of the cone spray from the nozzle is It is large, and the reach of the spray is short.

In the conventional speed sprayer, the spread angle of the conical spray from each nozzle is constant, and the relative positions of the nozzles of the front side nozzle group and the rear side nozzle group in the circumferential direction of the spray head are fixed. It was difficult to adjust the reachability and spreadability of the spray in relation to the spray environment.

An object of the inventions of claims 1 to 3 is to provide a spray head structure of a chemical spraying vehicle capable of adjusting the reachability and spreadability of spray depending on the spraying environment.

An object of the invention of claim 4 is to further provide a spray head structure of a chemical spraying vehicle capable of adjusting the reachability and spreadability of spray depending on the situation of the object to be sprayed on the upper side and the side.

[Means for Solving the Problems]

The invention will be described using the reference numerals of the drawings corresponding to the embodiments.

According to the first aspect of the present invention, the chemical spray wheel (10) has the spray head (24) including the plurality of nozzles (42) for spraying the spray of the chemical solution toward the surroundings. And, in the jet head structure,
The nozzle (42) is divided into a front nozzle group (52) and a rear nozzle group (54), which are arranged on the front side and the rear side, respectively, in the front-rear direction of the drug spraying vehicle (10), and the spray head (24) is The peripheral portion is provided with an expanding portion (50) that expands the cross-sectional area of the ventilation passage outward in the radial direction. The front side nozzle group (52) and the rear side nozzle group (54)
In the expanded portion (50), the nozzle (42) is arranged in the circumferential direction of the spray head (24).
And an outer position where the position of the nozzle (42) is displaced in the circumferential direction of the spray head (24).

According to the second aspect of the present invention, the chemical spray wheel (10) has the spray head (24) including the plurality of nozzles (42) for spraying the spray of the chemical solution toward the surroundings. And, in the jet head structure,
The nozzles (42) are divided into a front nozzle group (52) and a rear nozzle group (54) which are respectively arranged on the front side and the rear side in the front-back direction of the chemical spray vehicle (10). The front nozzle group (52) and the rear nozzle group (54) can adjust the relative position of the nozzle (42) in the circumferential direction of the jet head (24).

According to the third aspect of the present invention, the chemical spray wheel (10) has the spray head (24) provided with the plurality of nozzles (42) for spraying the spray of the chemical solution toward the surroundings. And, in the jet head structure,
The nozzle (42) is divided into a front nozzle group (52) and a rear nozzle group (54), which are arranged on the front side and the rear side, respectively, in the front-rear direction of the drug spraying vehicle (10), and the spray head (24) is The peripheral portion is provided with an expanding portion (50) that expands the cross-sectional area of the ventilation passage outward in the radial direction. Front nozzle group (52) and rear nozzle group (54)
The position of the spray head (24) in the radial direction can be adjusted in the expanding portion (50).

In the spray head structure of the chemical spray vehicle (10) of claim 4, the front nozzle group (52) and the rear nozzle group (54) further include a plurality of circumferential nozzle groups (56) with respect to the circumferential direction of the spray nozzle (24). , 58,60). Spray head (24) for each circumferential nozzle group (56,58,60)
The position of the nozzle (42) in the circumferential direction and the radial direction can be adjusted.

[Action]

In the inventions of claims 1 and 2, the positions of the nozzles (42) of the front side nozzle group (52) and the rear side nozzle group (54) are set to the jet head (24).
Shift in the circumferential direction. As a result, the front nozzle group (5
The spray from the nozzle (42) of 2) and the spray from the nozzle (42) of the rear nozzle group (54) form a staggered footprint, the intersection of the sprays approaches the spray head (24), and the spray head (24) The blind spot portion of the spray in the range close to is reduced. As a result, it is suitable for spraying the chemical liquid onto the target to be sprayed, which is close to the chemical spray vehicle (10), such as a shelf.

Nozzles (42) of front nozzle group (52) and rear nozzle group (54)
Are made equal in the circumferential direction of the spray head (24).
As a result, the intersection of the sprays adjacent to each other in the circumferential direction of the spray head (24) moves away from the spray head (24), and the spray advances by that amount without collision, so that the spray reaches a sufficient distance. As a result, it is suitable for spraying the chemical liquid on the spray target such as a standing tree, which is far from the chemical spray vehicle (10).

In the inventions of claims 1 and 3, when the radial positions of the nozzles (42) of the front nozzle group (52) and the rear nozzle group (54) in the expanded portion (50) of the jet head (24) are set to the outside, The velocity of the carrying air in the nozzle (42) decreases. This allows each nozzle (4
The spread angle of the spray from 2) increases, the intersection of the blind spots of the spray approaches the jet head (24), and the blind spot portion of the spray in the distance range close to the jet head (24) decreases. As a result, it is suitable for spraying the chemical liquid onto the target to be sprayed, which is close to the chemical spray vehicle (10), such as a shelf.

If the radial positions of the nozzles (42) of the front nozzle group (52) and the rear nozzle group (54) in the expanded portion (50) of the jet head (24) are set to the inner side, the velocity of the transport wind at the nozzle (42) Rises. Thereby, the spread angle of the spray from each nozzle (42) is reduced, the blind spot intersection of the spray moves away from the spray head (24), and the spray travels far without colliding, and is transported by a strong transport wind, Flyed far. As a result, it is suitable for spraying the chemical liquid on the spray target such as a standing tree, which is far from the chemical spray vehicle (10).

According to the fourth aspect of the invention, the spray head (24) is provided for each circumferential nozzle group (56, 58, 60) according to the distance to the object to be sprayed above and to the side of the chemical spray vehicle (10). The position of the nozzle (42) in the circumferential direction and the radial direction is changed.

〔Example〕

 The present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 11 is a side view of the speed sprayer 10 as a medicine spraying vehicle. Speed sprayer 10 has front wheels 12 and rear wheels
Frame 16 supported by 14 and self-propelled
On the upper side of the frame 16, the driver's seat 18 is sequentially installed from the front of the speed sprayer 10 and the chemical liquid tank 2 for storing the chemical liquid.
0, a hood 22 enclosing an engine room for accommodating a traveling engine, a spray head 24 for discharging a spray of a chemical solution, and a blower 26 for discharging air sucked from the rear to the spray head 24 are mounted.

FIG. 8 is a schematic exploded perspective view of the jet head 24. Spout
24 is divided into a swirl preventive plate 28 and a spout plate 30 from the front side and the rear side in the front-rear direction of the speed sprayer 10, respectively, and the periphery of the swirl preventive plate 28 and the spout plate 30 is inclined and the spray head 24 emits radiation. Guide holes 32 and 34 extending outward in the direction are formed. Guide holes 32, 3 outward in the radial direction of the spray head 24
The inclination directions of 4 are opposite to each other. A nozzle pipe 36 is arranged on the back side of the vortex shelter plate 28 and the spout plate 30 (spout plate
Illustration of the nozzle pipe 36 on the back side of 30 is omitted. ) And the nozzle pipes 36 are arranged on the upper and left and right sides, respectively. A plurality of connection ports 40 are provided for each nozzle pipe 36.
In the longitudinal direction at appropriate intervals and are inserted into the guide holes 32, 34 of the vortex shelter plate 28 or the jet nozzle plate 30. The nozzle 42 is connected to the tip of the connection port 40 so as to be located inside the spray head 24, and two collars 44 are fitted around the periphery of each connection port 40.
It is tightened by nuts 46.

FIG. 9 is a sectional view showing a detailed fixing structure of the nozzle 42 in the vortex shelter plate 28. The fixing structure of the nozzle 42 on the spray head plate 30 is also the same as in FIG. The connection port 40 is movably inserted in the guide hole 32, and the nozzle 42 is attached by screwing at the tip. The two collars 44 are fitted into the connection port 40 so as to sandwich the swirl preventive plate 28 from both sides,
It is tightened by the nut 46 together with the swirl preventive plate 28.
By tightening the nut 46, the connection port 40 is fixed at an arbitrary position within the guide hole 32.

Figure 10 shows the spray head seen from the side of the speed sprayer 10.
FIG. 24 is a vertical sectional view of 24. The baffle plate 48 extends in the vertical direction in the center of the swirl preventive plate 28 and the spray head plate 30 with respect to the front-back direction of the speed sprayer 10 and partitions the front and back of the spray head 24. The spray head 24 has an expanding portion 50 that gradually increases the cross-sectional area of the air passage toward the outside in the radial direction of the spray head 24 in the peripheral portion,
The guide holes 32, 34 are located on the spray head 24. Nozzle 42
Are divided into a front nozzle group 52 and a rear nozzle group 54, which are attached to the swirl preventive plate 28 and the spray nozzle plate 30, respectively.
Further, the collar 44 of the spout plate 30 faces the expanding portion 50 so that the positions of the guide holes 32 and 34 can be adjusted.

FIG. 1 is a schematic view of the spray head 24 seen from the rear of the speed sprayer 10. The nozzle pipes 36 are arranged on the upper and left and right side portions, and accordingly, the nozzles 42 are divided into an upper nozzle group 56, a left nozzle group 58, and a right nozzle group 60 in the circumferential direction of the jet head 24. The nozzle 42 is guided by the connection port 40 of the nozzle pipe 36 in the guide holes 32 and 34 of the vortex shelter plate 28 and the spray head plate 30, so that the nozzle 42 is positioned inside the position A and outside position B (front side nozzle) in the radial direction of the spray head 24. Nozzle belonging to group 52
42) or position C (in the case of the nozzle 42 belonging to the rear nozzle group 54), the adjustment of this position is performed by the upper nozzle group.
56, the left side nozzle group 58 and the right side nozzle group 60 can be implemented separately. As described with reference to FIG. 8, the inclination directions of the guide holes 32 and 34 toward the outer side in the radial direction of the jet head 24 are opposite to each other, so that the nozzles of the front side nozzle group 52 and the rear side nozzle group 54 are nozzles.
With respect to the circumferential direction of the jet head 24, 42 are at the same position at the inner position A and are displaced at the outer positions B and C.

2 and 3 show the positional relationship of the nozzles 42 of the front nozzle group 52 and the rear nozzle group 54 in the circumferential direction of the jet head 24 at the inner position and the outer position of the nozzle 42, respectively. At a position radially inward of the jet head 24, as shown in FIG. 2, the front nozzle group 52 with respect to the circumferential direction of the jet head 24 is formed.
The positions of the nozzles 42 of the rear nozzle group 54 are the same, and at the outer position in the radial direction of the nozzle head 24, as shown in FIG. 3, the front nozzle group 52 and the rear nozzle group 52 with respect to the circumferential direction of the nozzle head 24. The nozzle 42 of 54 has a staggered footprint.

4 and 5 show the state of spraying from the nozzle 42 when the nozzle 42 is at the radially outer position and the inner position of the nozzle head 24 in the expanded portion 50 of the nozzle head 24, respectively, from the side of the speed sprayer 10. FIG. The expansion part 50 is the spout 24
Since the cross-sectional area of the blower passage is gradually increased outward in the radial direction, the velocity of the wind coming from the blower 26 to the spray head 24 is large at the inner end of the expanding portion 50 and is large at the outer end. Becomes smaller in the section.

Therefore, when the nozzle 42 is in the outer position, as shown in FIG. 4, the wind around the nozzle 42 is weak, which results in an increase in the spread angle of the spray from the nozzle 42 and the intersection of each spray. The location becomes closer to the speed sprayer 10, and the blind spot portion of the spray at the location closer to the speed sprayer 10 decreases. Therefore, when the sprayed object is close to the speed sprayer 10 as in the case of spraying the chemical solution on a shelf, etc., it is necessary to suppress uneven spraying of the chemical solution on the sprayed object and perform good spraying. You can

Further, when the nozzle 42 is in the inner position as shown in FIG. 5, the wind around the nozzle 42 is strong, and as a result, the spread angle of the spray from the nozzle 42 is decreased, and the intersection of each spray is Further away from the speed sprayer 10, the spray is carried by the strong wind and reaches far from the speed sprayer 10. Therefore, even when the sprayed object is far from the speed sprayer 10 as in the case of spraying the chemical solution on a standing tree or the like, the spray of the chemical solution can be sent to the sprayed object.

6 and 7 show the state of spraying from the nozzle 42 when the nozzle 42 is at the radially outer position and the inner position of the nozzle head 24 in the expanded portion 50 of the nozzle head 24, respectively, from the rear of the speed sprayer 10. It is a figure.

As shown in FIG. 6, when the nozzles 42 are in the inner position, the positions of the nozzles 42 of the front nozzle group 52 and the rear nozzle group 54 are equal with respect to the circumferential direction of the jet head 24, and the nozzle 42 is in the circumferential direction of the jet head 24. The intersection point P of the spray from each nozzle 42 with respect to is moved away from the speed sprayer 10. As a result, the spray is prevented from colliding and travels far from the speed sprayer 10, and the reach of the spray increases. Therefore, it is suitable for spraying the drug solution on standing trees and the like.

Further, as shown in FIG. 7, when the nozzle 42 is in the outer position, the front nozzle group 52 with respect to the circumferential direction of the jet head 24.
The positions of the nozzles 42 of the rear side nozzle group 54 are substantially staggered, and the intersection P of the sprays from the respective nozzles 42 in the circumferential direction of the spray head 24 approaches the speed sprayer 10 and the sprays in the vicinity of the speed sprayer 10 are sprayed. The blind spots are reduced. Therefore, when the sprayed object is close to the speed sprayer 10 as in the case of spraying the chemical solution on a shelf, etc., it is necessary to suppress uneven spraying of the chemical solution on the sprayed object and perform good spraying. You can

Note that the connection port 40 of the nozzle pipe 36 can be arbitrarily changed in position within the guide holes 32, 34, and the fixed position of the connection port 40 within the guide holes 32, 34 is on the outer side in the radial direction of the spray head 24. The deviation of the nozzles 42 of the front nozzle group 52 and the rear nozzle group 54 in the circumferential direction of the jet head 24 increases, and the nozzles 42 of the front nozzle group 52 are almost the same as the nozzles 42 of the rear nozzle group 54 at the outermost position. Become the center. Therefore, by arbitrarily adjusting the fixing position of the connection port 40 in the guide holes 32, 34, the intersection of sprays from the nozzles 42 of the front side nozzle group 52 and the rear side nozzle group 54 and the dead angle range are defined as the spray head 24. It can be adjusted according to the distance to the object to be sprayed.

In the embodiment, the guide hole 32 of the swirl preventive plate 28 and the guide hole of the spouting plate 30 are used.
Both 34 are formed to be inclined with respect to the radial direction of the jet head 24. However, tilting only one of the guide holes 32, 34,
Although the other is parallel to the radial direction of the jet head 24, the front nozzle group 52 and the rear nozzle group 54 with respect to the radial direction of the jet head 24.
By changing the position of the nozzle 42, it is possible to change the displacement of the nozzles 42 of the front nozzle group 52 and the rear nozzle group 54 in the circumferential direction of the jet head 24.

[Effect of device]

In the inventions of claims 1 and 2, by arranging the nozzles of the front side nozzle group and the rear side nozzle group in equal positions in a circumferential direction of the jet head and in a zigzag footprint pattern, the nozzles of the front side nozzle group and the rear side nozzle group are separated from each other. It is possible to adjust the distance from the chemical spraying vehicle to the intersection of the sprays, reduce the blind spot portion of the spray in the vicinity of the chemical spraying vehicle, and extend the reaching distance of the spray. In this way, it is possible to appropriately spray the chemical solution according to the spraying environment such as standing trees and shelves.

According to the inventions of claims 1 and 3, in the expanding portion of the nozzle head in which the blower passage cross-sectional area increases outward in the radial direction, the positions of the nozzles of the front nozzle group and the rear nozzle group are set with respect to the radial direction of the nozzle head. Adjustable. As a result, the strength of the conveying air in the nozzle changes, and the spread angle of the spray from the nozzle also changes accordingly, so the distance at the intersection of each spray and the reaching distance change, and the spray environment such as standing trees and shelves is changed. Appropriate chemical solution spraying can be performed accordingly.

In the invention of claim 4, the front nozzle group and the rear nozzle group are further divided into a plurality of circumferential nozzle groups in the circumferential direction of the jet head, and the circumferential position and the radial position of the nozzles for each circumferential nozzle group. Is adjusted, so that the appropriate reachability and spreadability of the spray can be obtained according to the situation of the upper and side objects to be sprayed.

[Brief description of drawings]

The drawings relate to an embodiment of the present invention, and FIG. 1 is a schematic view of a spray head viewed from the rear of a speed sprayer, FIG. 2 and FIG.
The figures show the positional relationship of the nozzles of the front nozzle group and the rear nozzle group in the circumferential direction of the nozzle head at the inner position and the outer position of the nozzle, respectively. FIG. 6, FIG. 6 and FIG. 7 showing the spraying state from the nozzle from the side of the speed sprayer at the outer side position and the inner side position of the jet head in the radial direction, respectively.
FIG. 8 is a view showing the spraying state from the nozzle from the rear of the speed sprayer when the nozzle is at the radial outer side position and the inner side position of the jet head in the expanded portion of the jet head, and FIG. 8 is a schematic view of the jet head. FIG. 9 is an exploded perspective view, FIG. 9 is a cross-sectional view showing the detailed fixing structure of the nozzle in the vortex shelter plate, FIG. 10 is a vertical cross-sectional view of the spray head seen from the side of the speed sprayer, and FIG. FIG. 3 is a side view of the speed sprayer of FIG. 10 …… Speed sprayer (medicine sprayer), 24 ……
Nozzle head, 42 ... Nozzle, 50 ... Spreading part, 52 ... Front nozzle group, 54 ... Rear nozzle group, 56 ... Upper nozzle group (circumferential nozzle group), 58 ... Left nozzle group ( Circumferential nozzle group), 60 ... right nozzle group (circumferential nozzle group), A ... inner position, B ... outer position of front nozzle group, C ... outer position of rear nozzle group.

Claims (4)

[Scope of utility model registration request] 1. A spray head structure of a chemical spraying vehicle having a spray head (24) having a plurality of nozzles (42) for spraying a spray of a chemical solution toward the surroundings, wherein the nozzle (42) is: The spray nozzle (10) is divided into a front nozzle group (52) and a rear nozzle group (54) arranged on the front side and the back side, respectively, with respect to the front-rear direction, and the jet head (24) is radially outward. The peripheral portion is provided with an expanding portion (50) for enlarging the cross-sectional area of the air passage, and the front nozzle group (52) and the rear nozzle group (54) include the expanding portion.
In (50), an inner position that matches the position of the nozzle (42) in the circumferential direction of the jet head (24), and an outer position that shifts the position of the nozzle (42) in the circumferential direction of the jet head (24). 1. A spray head structure for a chemical spraying vehicle, which comprises: 2. In a spray head structure of a chemical spraying vehicle having a spray head (24) having a plurality of nozzles (42) for spraying a spray of a chemical solution toward the surroundings, the nozzle (42) comprises: It is divided into a front nozzle group (52) and a rear nozzle group (54), which are arranged on the front side and the rear side, respectively, in the front-rear direction of the chemical spray vehicle (10), and the front nozzle group (52) and the rear nozzle are arranged. The group (54) is a nozzle (42) in the circumferential direction of the jet head (24).
The spraying head structure of a chemical spraying vehicle, characterized in that the relative position of is adjustable. 3. In a spray head structure of a chemical spraying vehicle having a spray head (24) having a plurality of nozzles (42) for spraying a spray of a chemical solution toward the surroundings, the nozzle (42) is The spray nozzle (10) is divided into a front nozzle group (52) and a rear nozzle group (54) arranged on the front side and the back side, respectively, with respect to the front-rear direction, and the jet head (24) is radially outward. The peripheral portion is provided with an expanding portion (50) for enlarging the cross-sectional area of the air passage, and the front nozzle group (52) and the rear nozzle group (54) include the expanding portion.
In (50), the position of the spray head (24) in the radial direction is adjustable, and the spray head structure of the chemical spraying vehicle. 4. The front nozzle group (52) and the rear nozzle group (54) are further divided into a plurality of circumferential nozzle groups (56, 58, 60) in the circumferential direction of the jet head (24), The chemical spray according to claim 1, wherein the position of the nozzle (42) in the circumferential direction and the radial direction of the jet head (24) is adjustable for each circumferential nozzle group (56, 58, 60). Car head structure.