JPH08107748A - Agrochemical dispersion system - Google Patents

Abstract

PURPOSE: To provide the subject system capable of preventing turfs from being damaged due to the traveling of an agrochemical dispersion machine, and enabling agrochemical dispersion operation in a small area, and also, by which uneven dispersion can be avoided. CONSTITUTION: A self-propelled traveling machine body is mounted with a prime mover section, an agrochemical tank, an agrochemical injection section and a driving section to make up an agrochemical dispersion machine. Part of a water feed pipe 33 laid for feeding water to a sprinkler is provided with a Venturi section, and the agrochemical injection section is made to communicate with the Venturi section and a three-way changeover valve 42 is furnished on the downstream side of the Venturi section, and a handy dispersion device 50 is connected via a flexible hose 54 to the three-way changeover valve 42.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a drug spraying device.

[0002]

2. Description of the Related Art Conventionally, when spraying chemicals such as fertilizers and pesticides on a lawn at a golf course, a chemical spray tank filled with a low-concentration chemical diluted to be suitable for spraying is mounted on the chemical sprayer. , The same chemical is sprayed while running on the lawn.

[0003]

As described above, since a low-concentration drug solution is loaded, it is necessary to load a large amount of drug solution, which increases the weight of the drug sprayer and damages the lawn. There was a problem.

Further, since the above chemical spraying machine uses the body of a golf cart or the like, the position where the chemical liquid tank is disposed is
The vehicle is located at a high position, which is biased to the front or rear of the vehicle body, and the center of gravity is high when the chemical liquid tank is full, which causes a problem of poor running stability.

Further, since the medicine sprayer does not have a small turning ability, it is not possible to spray the chemical solution in a narrow space, and it is not possible to locally spray the chemical solution, and furthermore, there is a problem that uneven spraying easily occurs. .

[0006]

According to the present invention, a self-propelled traveling machine body is equipped with a prime mover section, a medicine tank, a medicine injection section and an operation section to form a medicine sprayer, while water is supplied to a sprinkler. The venturi part is formed in a part of the water pipe laid in the venturi part, the drug injection part is communicated with the venturi part, and a three-way switching valve is provided on the downstream side of the venturi part so that the three-way switching valve can be sprayed flexibly. It is intended to provide a drug spraying device characterized in that a hand-held sprayer is connected via a hose.

[0007]

Embodiments of the present invention will be described with reference to the drawings.

1 to 3 show a chemical spraying machine A according to the present invention.
In the medicine spraying machine A, the left and right front wheels 2, 2 ′ are pivotally rotatably pivoted on the front left and right sides of the machine frame 1, and the left and right rear wheels 3, 2 ′ are respectively supported on the left and right rear portions. 3'is rotatably supported to form a traveling body B.

A front cover 4 is attached to the front part of the upper surface of the machine body frame 1, and a drug tank 5 is mounted on the right side and a driving part 6 is mounted on the left side of the center part. It is located in the middle of 2 ', 3,3'.

Behind the drug tank 5 and the driving unit 6, a prime mover unit 7, a drug injection unit 8 and a reel unit 9 are arranged in this order from the front.
It is equipped with and.

A steering handle 10, which is erected on the rear surface of the motor unit 7, a pedal 11, and a seat 12 are arranged in the driving unit 6.

As described above, the medicine tank 5 is arranged at the intermediate position between the left, right, front and rear wheels 2, 2 ', 3, 3', and on the right side of the driving section 6, and the front side surface is at the front high rear. It is inclined low, and the rear side surface is formed by connecting the vertically formed upper part and the slightly rearward inclined lower part with a curved surface that bulges obliquely forward and upward, and the right side surface and the upper surface are before and after forming the vehicle body. It is formed on a smooth curved surface continuous with the fender, and a drug injection hole is formed on the upper surface,
The medicine injection hole is closed by a lid 13 that can be opened and closed.

As shown in FIG. 4, the medicine injecting section 8 communicates a medicine pump 15 with the medicine tank 5 via a first valve 14, and a branch pipe 16 communicates with the medicine pump 15.
One side of 16 is connected to a medicine discharge port 19 for discharging a medicine 18 to the outside through a second valve 17, and the other end of the branch pipe 16 is connected to a compression bag 21 provided in a compression tank 20. .

A gap 22 between the compression tank 20 and the compression bag 21 communicates with a pressure water inlet 24 via a water pipe 23.

In FIG. 4, 25 and 26 are air bleeding valves, 27 is a drain valve, and 28 is a coupler.

The reel portion 9 has a hollow shaft 29 horizontally mounted and a chemical hose reel 31 in which a drug hose 30 is wound around the hollow shaft 29, and pressure water is supplied from a water supply pipe 33 of a sprinkler 32 described later. A water hose reel 35 around which a water hose 34 for winding is wound is pivotally supported.

Further, a coupler 28 for connecting the winding base end of the drug hose 30 to the drug discharge port 19 and connecting the free end to the drug injection port 37 of the water supply pipe 33 is attached to the water hose. A base end of the winding 34 is connected to the pressure water inlet 24, and a coupler 28 is connected to the free end of the water supply pipe 33 so as to be connected to the medicine inlet 37.

FIG. 5 shows a usage state of the chemical spraying machine A in the golf course G. In the golf course G, a water supply pipe 33 for supplying water to the sprinkler 32 is buried, and the water supply pipe 33 is provided. On the upstream side of the
40, a venturi section 41 and a three-way switching valve 42 are provided,
As shown in FIG. 4, the venturi portion 41 has a small diameter portion 43 that gradually reduces in diameter in the middle of the water supply pipe 33 and then gradually increases in diameter.

A pressure water outlet 45 is provided on the upstream side of the small diameter portion 43 for communicating with the water hose 34 via the pressure water outlet valve 44, and a medicine injection valve 36 is provided in the small diameter portion 43. The drug injection port 37 is connected.

With such a configuration, the second portion of the chemical spraying machine A is
The valve 17 is closed, the first valve 14, the air bleeding valve 25 and the drain valve 27 of the compression tank 20 are opened, and the chemical pump 15
When the fuel tank is activated, the medicine 18 in the medicine tank 5 is compressed.
It is press-fitted into 21 and the compression bag 21 is in an expanded state in the compression tank 20.

Then, the medicine hose 30 is connected to the medicine inlet 37 of the water supply pipe 33, and the water hose 34 is connected to the pressure water outlet 45.

Next, the first valve 14 on the side of the chemical sprayer A,
The air bleeding valve 25 and the drainage valve 27 of the compression tank 20 are closed, and the main valve 39, the solenoid valve 40 and the pressure water extraction valve on the side of the water supply pipe 33 are closed.
When 44 and are opened, the pressure water in the water supply pipe 33 flows into the gap 22 between the compression tank 20 and the compression bag 21, and the chemical 18 in the compression bag 21 has the same pressure as the pressure water in the water supply pipe 33. Will work.

Next, when the second valve and the medicine injection valve 36 are opened, the small diameter portion 43 has a low pressure due to the Venturi effect, so that the medicine 18 in the compression bag 21 is injected into the water pipe 33,
The water is mixed with water flowing in the water supply pipe 33, diluted (for example, 40 to 50 times) to a concentration suitable for spraying, and sprayed in the form of mist from the sprinkler 32.

The dilution of the drug 18 is performed by pumping the drug 18 into the drug pump.
Instead of injecting it into the water pipe 33 at a pressure of 15, compress bag
The chemical is the same pressure as the water in the water pipe 33 acting on the 21
By injecting 18 into the water supply pipe 33, the injection pressure of the drug 18 becomes equal to the negative pressure generated in the venturi portion 41, and the negative pressure increases as the flow velocity of water in the water supply pipe 33 increases. Therefore, even if the flow velocity of water in the water supply pipe 33 changes, the medicine 18 can be diluted with substantially the same ratio, and regardless of the number of the sprinklers 32 connected to the water supply pipe 33, a substantially constant concentration can be obtained. The chemical solution can be sprayed.

In this way, since the medicine 18 can be diluted with the water flowing in the water pipe 33 and sprayed, the medicine sprayer A can be loaded with a high concentration of the medicine 18, and the medicine tank 5 Even if the capacity of the lawn T is reduced, the chemical solution can be sprayed on the lawn T of a large area, and the amount of the drug 18 to be loaded can be reduced to reduce the weight of the vehicle body, so that the damage to the lawn T can be minimized. can do.

Particularly, since the medicine tank 5 is arranged at the center of the vehicle body, that is, at the intermediate position between the left and right front and rear wheels 2,2 ', 3,3', the left and right front and rear wheels 2,2 ', 3,3'. The center of gravity of the medicine tank 5 can be lowered by arranging the medicine tank 5 at a low position without being interfered with by the vehicle. Moreover, even if the filling amount of the medicine 18 is changed, the center of gravity of the vehicle does not fluctuate much. It is possible to improve running stability.

FIG. 6 shows a handheld sprayer 50. The handheld sprayer 50 has a tubular main body 51 to which a handle 52 is attached, and nozzles 53 and 53 are provided at the middle portion and the tip portion, respectively. The flexible spray hose 54 is attached to the base end of the main body 51, and the other end of the spray hose 54 is detachably connected to the three-way switching valve 42.

A flow meter 55 for measuring and displaying the flow rate of the chemical liquid is attached in front of the handle 52, and a display section 56 of the flow meter 55 is attached.
Is directed toward the worker M.

With this configuration, the operator M operates the lever 57 of the three-way switching valve 42 to connect the water supply pipe 33 and the spray hose 54, so that the venturi portion 41 is diluted to a concentration suitable for spraying. The chemical solution can be flown into the main body 51 and sprayed from the nozzles 53, 53.

In particular, since the three-way switching valve 42 and the handheld sprayer 50 are connected by the flexible spraying hose 54, the operator M can grasp the grip 52 and move the handheld sprayer 50. It is possible to make the spray amount of the chemical liquid uniform by spraying the chemical liquid to a place or correcting the unevenness of spraying in the sprinkler 32.

Further, since the spray amount is displayed on the flow meter 55, the worker M sprays the chemical liquid while referring to the display of the flow meter 55, so that the chemical liquid can be sprayed more uniformly.

When the chemical spraying machine A is not used,
The pressure water extraction valve 44 and the chemical injection valve 36 are closed, and the main plug 39 of the water supply pipe 33 and the solenoid valve 40 are operated to operate the water supply pipe.
The water sent to 33 can be sprayed from the sprinkler 32 to irrigate the lawn T.

[0033]

According to the present invention, a self-propelled traveling machine body is equipped with a prime mover section, a medicine tank, a medicine injecting section, and a driving section to form a medicine spraying machine, while being laid for supplying water to a sprinkler. A venturi part is formed in a part of the water supply pipe, and the drug injection part is connected to the venturi part.A three-way switching valve is provided on the downstream side of the venturi part, and a flexible spray hose is provided on the three-way switching valve. By connecting the hand-held sprayer via the sprayer, the drug can be diluted with the water flowing in the water pipe and sprayed from the sprinkler, so that the drug sprayer can be loaded with a high-concentration drug and the drug tank Even though the capacity of the lawn is reduced, the chemical solution can be sprayed on a large area of lawn, etc., and the amount of chemicals loaded can be reduced to reduce the weight of the vehicle body, so damage to the lawn etc. can be minimized. Rukoto can.

Further, by switching the three-way switching valve so that the water supply pipe and the spray hose communicate with each other, it is possible to spray the chemical liquid diluted to a concentration suitable for spraying in the venturi portion from the nozzle of the handheld sprayer.

In particular, since the three-way switching valve and the hand-held sprayer are connected by a flexible spray hose, the worker's hand-held sprayer can be moved, so that the chemical solution can be sprayed in a narrow space or the sprinkler can be used. It is possible to correct the unevenness of application and make the density of the chemical solution uniform.

[Brief description of drawings]

FIG. 1 is an explanatory side view of a medicine spraying machine according to the present invention.

FIG. 2 is a rear view of the same.

FIG. 3 is an explanatory plan view of the same.

FIG. 4 is a schematic explanatory view showing a configuration of a drug injection unit.

FIG. 5 is an explanatory view showing a usage state of the chemical spraying device of the present invention on a golf course.

FIG. 6 is an explanatory view showing a hand-held spreader.

[Explanation of symbols]

 A chemical spraying machine B traveling machine 5 chemical tank 6 operating section 7 motor section 8 chemical injection section 32 sprinkler 33 water pipe 41 venturi section 42 three-way switching valve 50 handheld sprayer 54 spraying hose

Claims (1)

[Claims] 1. A self-propelled traveling body (B) is provided with a prime mover section.
(7), drug tank (5), drug injection part (8) and operation part (6)
On the other hand, the chemical sprayer (A) is configured by mounting the venturi part (41) on a part of the water pipe (33) laid for supplying water to the sprinkler (32), and the venturi part (41) is formed. The drug injection part (8) is communicated with the venturi part (41), a three-way switching valve (42) is provided downstream of the venturi part (41), and the three-way switching valve (42) is provided with a flexible spray hose (54). Handheld sprayer
(50) is connected, The chemical spraying device characterized by the above-mentioned.