JPH0660460U - Drug sprayer - Google Patents

Abstract

(57) [Abstract] [Purpose] In a chemical spraying vehicle 10 for large-scale control, to achieve good spraying of the chemical particles 74 while ensuring good reachability. [Configuration] The chemical spraying vehicle 10 is equipped with a large-capacity main chemical sprayer 28 for medium / long-distance spraying and a small-capacity auxiliary chemical sprayer 38 for short-distance spraying. Main chemical sprayer 28 and sub chemical sprayer
38 is the fine drug particles 74 ejected from the annular nozzle rows 54 and 60.
On the blown air generated by the rotation of the fans 52 and 58.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drug spraying vehicle used for large-scale control of paddy fields (for example, a spraying width of about 100 m), and more particularly to a drug spraying vehicle with improved reachability and uniform sprayability of fine drug particles. .

[0002]

[Prior art]

 Japanese Patent Application Laid-Open No. 1-171668 discloses a large-scale control spraying device for spraying fine chemical particles from a nozzle with air flow. In this spraying device, in order to achieve uniform spraying, the casing of the blower section is tapered so that the diameter of the blower section is gradually reduced on the discharge port side, and the discharge port has a cut surface diagonally downward with respect to the center line of the blower section. There is.

[0003]

[Problems to be solved by the device]

 The problems of the spraying device disclosed in JP-A-1-171668 are listed below. (A) A discharge port having a diagonally downward cut surface tends to cause turbulent flow, which increases the amount of energy attenuation of the blown air. Therefore, it is easily affected by the wind, and the reach of the drug particles is reduced when the blowing direction is particularly a headwind. (B) If the capacity of the spraying device is increased in order to improve reachability, the fine drug particles may fly too much during the tailwind, reaching the non-spraying area and causing chemical damage.

An object of the invention of claim 1 is to provide a chemical spraying vehicle capable of achieving uniform spraying while ensuring good reachability. An object of the invention of claim 2 is to provide a drug spraying vehicle capable of appropriately spraying drug fine particles according to a spraying condition. An object of the invention of claim 3 is to provide a drug spraying vehicle capable of improving the reachability of drug particles by a large-capacity drug spraying machine. An object of the invention of claim 4 is to provide a drug spraying vehicle capable of suppressing the drug particles from the large-capacity drug sprayer from being affected by the running wind when the drug particles are sprayed sideways with respect to the traveling direction. Is to provide.

[0005]

[Means for Solving the Problems]

 The invention will be described using the reference numerals of the drawings corresponding to the embodiments. The drug spraying vehicle (10) according to claim 1 comprises: (a) a small-capacity drug spraying device (38) for spraying the drug particles (74) onto a nearby distance range and (b) a drug particle (74). And a large-capacity chemical spraying machine (28) for spraying the airborne air) to the remote distance range.

In the drug spraying vehicle (10) of claim 2, the small-capacity drug sprayer (38) and the large-capacity drug sprayer (28) swing their discharge ports (34, 44) up and down independently of each other. It is said to be movable.

In the drug spraying vehicle (10) of claim 3, the small-capacity drug sprayer (38) and the large-capacity drug sprayer (28) are arranged such that the air blown from the small-capacity drug sprayer (38) sprays the large-capacity drug. Arranged in a positional relationship adjacent to the air blown from the machine (28).

In the medicine spraying vehicle (10) of claim 4, the small capacity medicine spraying machine (38) is arranged in front of the large capacity medicine spraying machine (28) with respect to the traveling direction of the medicine spraying wheel (10). There is.

[0009]

[Action]

 In the drug spraying vehicle (10) of claim 1, the small-capacity drug sprayer (38) and the large-capacity drug sprayer (28) operate in parallel to spray the drug particles (74). In the distance range closer to the drug spraying vehicle (10), the drug particles (74) from the small capacity drug sprayer (38) are sprayed. Further, in the distance range farther from the drug spraying vehicle (10), the drug particles (74) from the large capacity drug sprayer (28) are sprayed.

In the chemical spraying vehicle (10) of claim 2, the small-capacity chemical spraying machine (38) and the large-capacity chemical spraying machine (28) are arranged so that the spraying situation is large, for example, in a wide field in the field where the chemical fine particles (74) are sprayed. The elevation angle of the discharge ports (34, 44) is independently adjusted according to the strength and direction of the natural wind, the traveling speed, and the like.

In the chemical spraying vehicle (10) according to claim 3, the air blown from the large-capacity chemical spraying machine (28) is blown from the small-volume chemical spraying machine (38) within a range close to the chemical spraying vehicle (10). The wind force is strengthened or the wind force is suppressed by flowing adjacent to. As a result, the air blown from the large-capacity chemical sprayer (28) can reach a long distance, and the fine drug particles (74) from the large-capacity chemical sprayer (28) can reach a long distance.

In the medicine spraying vehicle (10) of claim 4, the air blown from the small capacity medicine spraying machine (38) is sent from the large capacity medicine spraying machine (28) with respect to the traveling direction of the medicine spraying vehicle (10). Adjacent to the front of the blowing air, the running air of the chemical spraying vehicle (10) is blocked against the air blowing from the large capacity chemical spraying machine (28). As a result, the air blown from the large-capacity chemical spraying machine (28) is suppressed from being affected by the running wind of the chemical spraying vehicle (10).

[0013]

【Example】

 The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 is a side view of a drug spraying vehicle 10. The all-wheel drive self-propelled carriage 12 includes front wheels 14 and rear wheels 16, and the front wheels 14 also serve as steered wheels. The drug tank 18 and the power unit 20 are mounted on the carrier of the self-propelled cart 12, the drug tank 18 stores the drug (liquid), and the power unit 20 is a machine such as an engine 62 or a spray pump 68 (FIG. 4) described later. Including kind.

FIG. 2 is a view of the spraying device 22 as viewed from the rear of the chemical spraying vehicle 10. 1 and 2, the spraying device 22 is attached to the rear end of the self-propelled carriage 12. The turntable 24 is rotatable around a vertical line, and the pair of arms 26 is fixed to the turntable 24 at the lower end and stands upright from the turntable 24. The main chemical sprayer 28 has sufficient capacity for medium and long distance spraying. In the main chemical spraying machine 28, the casing 30 is provided with the suction port 32 and the discharge port 34 on both sides in the axial direction, and is connected to the upper ends of the pair of arms 26 via a rotation fulcrum 36 to surround the horizontal line. It is freely rotatable. The auxiliary medicine sprayer 38 has a sufficient capacity for short-distance spraying. In the sub-medicine sprayer 38, the casing 40 has an inlet 42 and an outlet 44 on both sides in the axial direction, is connected to one side of the casing 30 via a rotation fulcrum 46, and rotates about a horizontal line. The rotation angle is freely adjustable by expanding and contracting a hydraulic cylinder (not shown). The casings 30 and 40 are tapered so that the diameters of the casings 30 and 40 gradually decrease toward the discharge ports 34 and 44 in the halves on the discharge port 34 and 44 sides. The hydraulic cylinder 48 extends obliquely between the main chemical sprayer 28 and the rotary base 24, is rotatably connected to the main chemical sprayer 28 and the rotary base 24 at both ends, and expands and contracts around the fulcrum 36. The rotation angle of the casing 30 is adjusted.

FIG. 3 is an internal structural diagram of the main drug sprayer 28 and the sub drug sprayer 38. The main drug sprayer 28 and the sub drug sprayer 38 have the same structure, only different in size. In the main drug sprayer 28 and the auxiliary drug sprayer 38, the hydraulic motors 50 and 56 are arranged near the suction ports 32 and 42, and the fans 52 and 58 are connected to the discharge ports 34 and 54 with respect to the hydraulic motors 50 and 56. It is arranged on the 44 side and is driven by hydraulic motors 50 and 56. The annular nozzle rows 54 and 60 are arranged inside the discharge ports 34 and 44 along the periphery. In this embodiment, the annular nozzle rows 54, 60 extend along the inner peripheral sides of the casings 30, 40, but they may extend along the outer peripheral sides of the casings 30, 40. The main drug sprayer 28 and the sub drug sprayer 38 suck air from the outside through the suction ports 32, 42 into the casings 30, 40 as the fans 52, 58 rotate, and discharge the discharge ports 34, Discharge from 44. The liquid agent is sprayed in the form of mist from the nozzles of the annular nozzle rows 54, 60 in the forward direction, and is sprayed on the air blown from the fans 52, 58.

FIG. 4 is a diagram showing an example of hydraulic and liquid systems. The engine 62 drives a hydraulic pump 64 and a spray pump 68 via a belt 66. The oil passage 70 connects the hydraulic pump 64 and the hydraulic motors 50 and 56 to each other, and supplies the hydraulic pressure for driving to the hydraulic motors 50 and 56. The pipe 72 connects the discharge side of the spray pump 68 to the annular nozzle rows 54 and 60, and the drug in the medicine tank 18 is pumped by the spray pump 68 to the annular nozzle rows 54 and 60 via the pipe 72.

FIG. 5 shows a state of spraying the drug particles 74 by the spraying device 22. The spraying device 22 is placed sideways with respect to the chemical spraying vehicle 10 by the rotation of the rotary table 24 in a normal spraying operation. A and B show the short-distance and medium / long-distance ranges from the chemical spraying vehicle 10, respectively, and the chemical fine particles 74 from the main chemical sprayer 28 and the sub-chemical sprayer 38 respectively are the medium / long-distance spraying ranges B and near. It is sprayed in the distance spreading range A. The far end of the medium / long-distance spraying range B is, for example, about 100 m from the chemical spraying vehicle 10. The main chemical sprayer 28 and the sub-chemical sprayer 38 are independently rotatable around rotation fulcrums 36, 46 (Figs. 1 and 2), and the discharge ports 34, 44 are provided by a hydraulic cylinder 48 or the like. The elevation angle of can be changed. The elevation angles of the outlets 34, 44 are adjusted according to the spraying width, the strength and direction of the natural wind, and the spraying conditions such as the traveling speed to obtain appropriate reachability and uniform density. .

FIG. 6 is a state diagram of the spraying work in which the spraying device 22 is placed sideways. A pair of auxiliary drug sprayers 38 are rotatably attached to both sides of the main drug sprayer 28. The chemical spraying vehicle 10 travels along the boundary of the field 76, and the main chemical sprayer 28 and the sub-chemical sprayer 38 are turned laterally toward the field 76 with respect to the traveling direction of the chemical sprayer 10 by the rotation of the rotary table 24. To be done. The pair of auxiliary drug sprayers 38 are rotated with the elevation angles of the discharge ports 44 aligned or independently of each other. The air blown from the sub chemical sprayer 38 flows adjacent to the air blown from the main chemical sprayer 28, and the air blown from the main chemical sprayer 28 is strengthened in the near-distance spray range A. Or, the attenuation of wind force is suppressed. As a result, the reachability of the air blown from the main chemical spraying machine 28 is enhanced, and the reaching distance of the drug fine particles 74 from the main chemical spraying machine 28 is increased. On the other hand, in the short-distance spraying range A, the natural winds or running winds from both sides in the horizontal direction with respect to the blowing direction from the main chemical sprayer 28 are located on both sides of the main chemical sprayer 28 with respect to the traveling direction of the chemical spray vehicle 10. The air blown from the sub chemical sprayer 38 disposed in the above section blocks the air blown from the main chemical sprayer 28. As a result, the air blown from the main chemical sprayer 28 is suppressed from being affected by the traveling wind and the natural wind, and the chemical fine particles 74 from the main chemical sprayer 28 reach a sufficiently long distance.

[0019]

[Effect of device]

 According to the first aspect of the present invention, the small-capacity chemical sprayer and the large-capacity chemical sprayer share the distance ranges of the near side and the far side, and spray the fine particles of the drug. Is suitable only for spraying in the near and far distance ranges, is suitable for uniform spraying in each range, and achieves uniform spraying of fine drug particles over the entire spraying width. The distribution of the drug particles in the closer distance range is not taken into consideration, and the optimum one can be selected with a focus on reachability, so that the reachability of the entire drug spraying vehicle can be improved.

According to the second aspect of the present invention, since the small-capacity chemical sprayer and the large-capacity chemical sprayer can swing the discharge ports independently in the vertical direction, the spraying width, natural wind, running speed, etc. The elevation angle of the small-capacity chemical sprayer and the large-capacity chemical sprayer can be adjusted according to the application situation, and proper spraying can be performed.

According to the invention of claim 3, the air blown from the large-capacity chemical spraying machine is adjacent to the air blown from the small-capacity chemical sprayer within a range close to the chemical spraying vehicle, so that The attenuation of the wind force can be suppressed or the wind force can be increased to extend the reach of the drug particles.

In the invention of claim 4, the air blown from the small-capacity chemical spraying machine flows adjacent to the air blown from the large-capacity chemical spraying machine on the front side with respect to the traveling direction of the chemical spraying vehicle. The influence of traveling wind is suppressed, and the reachability of fine drug particles is improved.

[Brief description of drawings]

FIG. 1 is a side view of a drug spraying vehicle.

FIG. 2 is a view of the spraying device as viewed from the rear of the drug spraying vehicle.

FIG. 3 is an internal structure diagram of a main drug sprayer and a sub drug sprayer.

FIG. 4 is a diagram showing an example of hydraulic and liquid systems.

FIG. 5 is a diagram showing a state of spraying of fine drug particles by a spraying device.

FIG. 6 is a state diagram of a spraying operation in which the spraying device is placed sideways.

[Explanation of symbols]

 10 drug sprayer 28 main drug sprayer (large-capacity drug sprayer) 34,44 discharge port 38 secondary drug sprayer (small-capacity drug sprayer) 74 drug fine particles

Claims (4)

[Scope of utility model registration request] 1. A small-capacity chemical spraying machine (38) which sprays chemical fine particles (74) on air blowing and sprays them in a nearer distance range, and a chemical finer particle (74) which sprays air to the farther distance range. And a large-capacity chemical spraying machine (28) for carrying out the chemical spraying car. 2. The small-capacity chemical sprayer (38) and the large-capacity chemical sprayer (28) are such that their discharge ports (34, 44) can be vertically swung independently of each other. The chemical spraying vehicle according to claim 1, which is characterized in that. 3. The small-capacity chemical sprayer (38) and the small-capacity chemical sprayer (38) and the small-capacity chemical sprayer (38) and the small-volume chemical sprayer (38) having a positional relationship in which the air blown from the small-volume chemical sprayer (38) flows adjacent to the air blown from the large-volume chemical sprayer (28). The chemical spraying vehicle according to claim 1 or 2, wherein a large-capacity chemical spraying machine (28) is provided. 4. The small-capacity chemical sprayer (38) is the large-capacity chemical sprayer (28) in the traveling direction of the chemical sprayer (10).
The chemical spraying vehicle according to claim 3, wherein the chemical spraying vehicle is disposed on the front side.