JP2000135046A - Chemical liquid-sprinkling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chemical liquid-sprinkling device simply structured and capable of properly sprinkling a chemical liquid e.g. carbam agent while preventing the liquid from being exposed to the outer air as far as possible until the sprinkling is finished and dispensing with diluting the liquid. SOLUTION: The device is formed by: forming a water holding tank 3 having a predetermined capacity in the front section of a tractor 1 via a mounting base 4; providing the mounting base 4 with a supporting section 10 allowed to attach a chemical tank 5 in the vicinity of the tank 3; connecting both the tanks 3 and 5 to the suction port of a pump 17 fitted to the mounting base 4 via a water feeding pipe 18 and a chemical feeding pipe 19; connecting a sprinkling nozzle 6 to the discharge port of the pump 17 via a liquid feeding pipe 20; fitting the nozzle 6 to a tilling rotary 2 mounted on the rear of the tractor 1; and providing the liquid feeding pipe 20 with a valve 33 designed to open/close a chemical fluid path in engagement with the vertical movement of the rotary 2, wherein the storage water in the tank 3 with the chemical liquid in the tank 5 are mixed while the pump 17 sucks them and the thus diluted chemical liquid is fed to the nozzle 6 via the pipe 20 to be sprinkled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chemical spraying apparatus mainly used for disinfecting soil, and more particularly to a simple and easy-to-use chemical sprayer mounted on an agricultural tractor so that a chemical such as cabbage can be effectively sprayed on soil. The present invention relates to a chemical spraying device.

[0002]

2. Description of the Related Art Generally, in the case of producing crops, chemicals (pesticides) are sprayed to prevent diseases caused by pathogenic bacteria, nematodes and the like parasitic on cropped soil. The type of disease varies depending on the crop, and for example, in the case of cabbage, cabbage verticillium wilt is well known in addition to chlorosis and clubroot. Carbum agents containing ammonium N-methyldithiocarbamate and the like are well known as agents for controlling these diseases.

[0003] Here, carbum agents and other chemicals (chemical solutions)
As a method of spraying on the cropping soil of crops, a method of spraying by holding a spraying nozzle while carrying a small tank containing chemicals, a method of mounting a large tank in place of the small tank on the carrier of the vehicle and an extension hose to the large tank There is a method of spraying by hand with a spray nozzle connected by hand, and a method of injecting a drug into important points of soil using an injector filled with a drug. This method is inefficient and unsuitable for large soils, and the spraying effect is greatly reduced with highly volatile chemicals such as carbum.

[0004] Therefore, as a method of spraying a highly volatile chemical such as a carbum agent on a vast soil, a tractor equipped with a tillage rotary is equipped with a large tank containing the chemical,
The chemical solution is sprayed while running, and the sprayed chemical solution is immediately mixed with the soil by a tilling rotary.

[0005]

However, the chemical solution to be used generally has to be prepared by diluting a commercially available undiluted solution with water at an appropriate magnification in advance, and a lot of time and labor has been spent on the work. . In addition, there is the inconvenience that the diluted chemical must be transferred to the tank mounted on the tractor. there were.

Further, when spraying a chemical solution mounted on a tractor, it is often the case that the spraying is temporarily stopped. However, in the past, since this was all performed manually, the operation was often forgotten. there were. For example, spraying is stopped by operating the switch while the tractor is turning, but after that the operator forgets to turn on the switch and proceeds with only the tilling work without spraying the chemical, or dripping the chemical with the switch on while the tractor is stopped. There was a thing.

The present invention has been made in view of the above circumstances, and an object of the present invention is to appropriately spray a chemical solution such as a carbum agent without contacting the outside air as much as possible until the end of work. It is an object of the present invention to provide a simple and convenient chemical spraying device.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a chemical spraying device mounted on an agricultural tractor having a tilling rotary mounted on a rear portion of a vehicle body, the device being mounted on a portion of the vehicle body via a mount. Equipped with a water tank fixed
A support portion for detachably mounting a chemical solution tank is formed on the mount near the water storage tank, and a pump for sucking and mixing the water stored in the water storage tank and the chemical solution in the chemical solution tank is mounted on the mount. A spray nozzle provided along a longitudinal direction of the tilling rotary is connected to a discharge port of the pump via a liquid supply pipe.

In particular, according to the second aspect of the present invention, the other end of the water supply pipe having one end connected to the water storage tank and the other end of the chemical supply pipe having one end connected to the chemical tank is connected to the suction port of the pump via a junction pipe. And a chemical spraying device provided with flow rate adjusting means in each of the water supply pipe and the chemical supply pipe.

[0010] In a third aspect of the present invention, there is provided a chemical spraying apparatus in which a valve for opening and closing a flow path of a chemical is interposed in the liquid supply pipe in conjunction with a raising and lowering operation of a tilling rotary.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an application example of a chemical spraying device according to the present invention will be described with reference to the drawings. First, FIG. 1 shows a preferred example of the present invention. In the figure, 1 is an agricultural tractor,
Reference numeral 2 denotes a detachable tilling rotary mounted on the rear part of the vehicle body. The tilling rotary 2 can be moved up and down by a remote control inside the cabinet of the tractor 1 as is well known, and can tilt the soil while rotating when descending. .

Here, the chemical spraying device according to the present invention is mounted on the tractor 1 as described above, and can spray a predetermined chemical onto the soil while traveling. Reference numeral 3 denotes a water storage tank which constitutes the present apparatus.
A pedestal 4 with a capacity of 1 liter
Fixed through. Reference numeral 5 denotes a commercially available chemical solution tank (a 20-liter plastic container) that stores a chemical solution as it is, and the chemical solution tank 5 is mounted on a gantry 4 in proximity to the water storage tank 3 as shown in the figure. Reference numeral 6 denotes a tubular spray nozzle. The spray nozzle 6 is attached to the tillage rotary 2 via a support shaft 7. And according to the present invention,
The water stored in the water storage tank 3 and the chemical in the chemical tank 5 are automatically mixed, and the chemical diluted at an appropriate magnification is sent to the rear of the tractor 1 and spouted from the spray nozzle 6 toward the soil in a shower form. it can.

FIG. 2 is a partially cutaway front view of the vehicle body of the tractor. As is apparent from this figure, the water storage tank 3 has a lid 8 for opening and closing a water injection port at an upper portion thereof, and is firmly fixed on the gantry 4 with a band 9. On the other hand, the chemical liquid tank 5 is installed in two inclined shapes on both sides of the water storage tank 3. Supports 10, 10 for holding the chemical tanks 5, 5 in an inclined manner are formed on the gantry 4. When the chemical tank 5 is empty, the empty chemical tank 5 is taken out from the support 10 and filled. It can be replaced immediately with a tongue.

Here, as shown in FIGS. 3 and 4, the gantry 4 is formed by joining steel bars or the like, and for example, a pair of parallel beams 11 fastened to the front of the tractor body by bolts or the like. A rectangular frame 12, joined to the beam 11, a column 13 erected on the frame 12, an upper frame 14 formed at the upper end of the column 13 so as to project on both sides of the frame 12, The arm 12 is connected to both side surfaces of the frame 12 at right angles and extends in the horizontal direction, and a V-shaped sheet metal 16 connecting the center of the arm 15 and the upper frame 14.

On both sides of the gantry 4, there are formed support portions 10 each having an arm bar 15 as a lower surface, and the chemical solution tank 5 is inclined on the support portions 10 as described above. As is clear from FIG. 3, the chemical solution tank 5 provided in the support portion 10 has its bottom surface and one side surface supported by sheet metal 16, respectively. Further, as shown in FIG.
Is attached. The pump 17 is, for example, of a turbo type, and uses a pump whose impeller is made of polypropylene so that it can be applied particularly to a carbum agent having high metal corrosion.

As shown in FIG. 2, the suction port of the pump 17 is connected to the water storage tank 3 via a water supply pipe 18, and the chemical tank 5 is connected to the suction port of the pump 17 via a chemical supply pipe 19. Connected. Then, the water stored in the water storage tank 3 and the chemical liquid in the chemical liquid tank 5 are simultaneously sucked and mixed by the pump 17, and the diluted chemical liquid can be supplied from the pump 17 to the spray nozzle 6. In FIG. 2, reference numeral 20 denotes a flexible liquid supply pipe for supplying a diluted chemical solution to the spray nozzle 6, and one end of the liquid supply pipe 20 is connected to the discharge port of the pump 17, and the other end is connected to the tractor 1.
Along the vehicle body to the tillage rotary 2 side and connected to the spray nozzle 6.

Next, the liquid supply system is shown in FIG. As is clear from this figure, the water supply pipe 18 and the chemical liquid supply pipe 19 are connected to the suction port of the pump 17 via the junction pipe 21. Of these, the water supply pipe 18 is formed of a flexible hose, and two valves 22A and 22B are interposed therebetween as flow rate adjusting means for adjusting the amount of water supply. Those valves 22
Reference numerals A and 22B denote, for example, manual cocks, which can be used to freely open and close the water supply system. In addition, 2
Reference numeral 3 denotes a float with a post mounted on the water storage tank 3, and the float 23 allows the amount of water stored in the water storage tank 3 to be constantly monitored from the outside.

On the other hand, the chemical solution supply pipe 19 is
A detector 24 such as a photo sensor for detecting the presence or absence of a chemical solution in order from the side, an adjustment valve 25 as a flow rate adjusting means for adjusting the flow rate of the chemical solution, a flow meter 26 such as a flow meter for displaying the flow rate of the chemical solution, and a supply of the chemical solution. Valve 27 for stopping,
And a bag-shaped manual pump 28 is interposed. As the detector 24, it is preferable to use a non-contact type sensor such as a reed switch or a photo sensor so as to be applicable to a corrosive carburizing agent and the like. A photosensor that can be used is preferable. In this type of detector 24, the chemical solution supply pipe 19 is partially constituted by a light transmissive tube, and is fixed around the periphery thereof with bolts or the like.

Here, the pump 17 and the detector 24 operate using a battery (not shown) mounted on the tractor 1 as a power source. Among them, the detector 24 is not shown and installed in a cabinet of the tractor 1 or the like. It is electrically connected to an alarm (buzzer) and sends an alarm signal to the alarm when the chemical in the liquid supply pipe 19 is no longer detected.

The chemical liquid supply pipe 19 has one end connected to one of the chemical liquid tanks 5, and when the chemical liquid tank 5 becomes empty, that is, when the above-mentioned alarm sounds, the chemical liquid supply pipe 19 is connected to the other chemical liquid tank 5 immediately. You can switch the connection. For example, as shown in FIG. 6, a screw-type lid 2 that can be attached to the upper port of the chemical solution tank 5 is provided at one end of the chemical solution supply pipe 19.
When one of the chemical liquid tanks 5 becomes empty, it is sufficient to simply attach the lid 29 to the other chemical liquid tank 5. Reference numeral 30 denotes a hard pipe forming one end of the chemical solution supply pipe 19, and a weight 30B having a hole is attached to a tip end thereof via a flexible pipe 30A. The pipe 30 penetrates the lid 29 and is introduced into the chemical solution tank 5.

Next, FIG. 7 shows an enlarged portion of the tilling rotary. As is apparent from this figure, the tilling rotary 2 is connected to the rear of the vehicle body of the tractor 1 via a link mechanism 32 including a hydraulic cylinder (not shown). And the spraying nozzle 6 is in the longitudinal direction of the tilling rotary 2 (vehicle width direction of the tractor).
Is fixed to the part by a support shaft 7, and one end of a liquid supply pipe 20 is connected to the spray nozzle 6. In particular, the spraying nozzle 6 is interposed between the vehicle body of the tractor 1 and the cultivating rotary 2 so that the chemical solution sprayed from the spraying nozzle 6 toward the soil can be immediately mixed with the soil by the cultivating rotary 2. As shown in FIG. 5, the spray nozzle 6 is provided with a spray port 6A for spraying a chemical solution along its axial direction.

The liquid supply pipe 20 connecting the pump 17 and the spray nozzle 6 has a valve element 33 as shown in FIG.
Is interposed. The valve body 33 is fixed to a portion above the tilling rotary 2 with bolts or the like, and can open and close the flow path of the chemical solution in the liquid supply pipe 20. In particular, the valve body 33 is connected to the raising and lowering operation of the tilling rotary 2 by connecting a built-in spool to a portion of the link mechanism 32 with a wire (not shown) or the like.

More specifically, when the tiller rotary 2 is raised, the flow path of the liquid supply pipe 20 is closed through the above-mentioned wire, and when the till rotary 2 is lowered, the flow path is opened and the chemical solution is sprayed. The valve body 33 may be, for example, a solenoid valve, which can be opened and closed by a sensor capable of detecting the position of the till rotary 2. That is, on the track of the tilling rotary 2, a limit switch, a proximity switch, or the like, which is switched at the portion of the cultivating rotary 2, is attached to the tractor at the portion of the body of the tractor as the sensor,
Thereby, when it is detected that the tilling rotary 2 is at the lower end position, the valve body 33 is opened with the electric signal,
When the signal is not present, that is, when the tilling rotary 2 is above and is not detected by the sensor, the valve element 33 can be closed in a non-excited state.

Here, in order to spray a chemical solution onto the soil using the chemical solution spraying apparatus configured as described above, first, as an adjustment of the amount of water and the amount of medicine, water is filled in the water storage tank 3 from a water supply or the like with a hose. And the chemical supply pipe 19 is connected to the water storage tank 3.
Introduce one end. In other words, water is used during adjustment without using a chemical. Specifically, the engine of the tractor 1 is operated with the cultivator rotary 2 lowered, and the pump 17 is operated. Then, while the valves 22A and 27 shown in FIG. 5 are fully opened, the valve 22B and the regulating valve 25 are opened by an appropriate amount to spray water from the spray nozzle 6. Here, collect the sprinkled water in a measuring cup for a certain period of time and measure the overall flow rate.
The bubble 22B and the regulating valve 25 are adjusted so that the flow rate becomes a predetermined value.
Is adjusted, and in particular, by operating the adjustment valve 25, the amount of the chemical solution (here, water) with respect to the entire flow rate is adjusted while watching the flow meter 26.

Thus, the dilution ratio of the chemical solution can be adjusted according to the traveling speed of the tractor, but the adjustment only needs to be performed once at the beginning, and thereafter, the preparation for spraying is performed only by fully opening and closing the valves 22A and 27. Can be trimmed.

When the flow rate adjustment is completed in this way, two commercially available chemical liquid tanks 5 are set on the support portion 10 as they are, one of the caps is removed, and the lid 29 is attached to the cap mounting opening, and the chemical liquid tank 5 is attached. One end of the supply pipe 19 is connected to the chemical tank 5.

If the tractor 1 is run with the tillary rotary 2 lowered in this state, the chemical can be sprayed along the track. However, an alarm device for notifying that there is no remaining chemical during spraying of the chemical. Sounds, the tractor 1 is stopped and the connection of the chemical supply pipe 19 is switched to the other chemical liquid tank 5. Since the chemical solution tank 5 is inclined, the remaining amount of the chemical solution is small, and the chemical solution tank 5 can be almost completely used up. Here, when the chemical liquid tank 5 is exchanged, the liquid supply pipe 20 is used.
The inside is filled only with water, or the chemical supply pipe 1
Since air has been mixed into the pump 17 and the like from 9, an appropriate amount of chemical solution is supplied by the manual pump 28 so that only water is not sprayed.

When the tractor 1 is turned, the tilling rotary 2 is raised. At this time, the spraying of the chemical solution is automatically stopped without any extra operation, so that there is no waste and the tilling rotary 2 is lowered. When the cultivation of the soil is started, the spraying of the chemical solution starts automatically, so that the work does not proceed without spraying the chemical solution, and the sprayed chemical solution is immediately mixed with the soil by the tilling rotary 2. A large spraying effect can be obtained even with highly volatile chemicals.

On the other hand, when taking a break in the middle of the work, it is customary to lower the rotary tilling rotary 2 for safety. At this time, the pump 17 is driven by stopping the engine of the tractor 1. In addition to being stopped, the water supply pipe 18
By closing the valves 22A and 27 of the chemical supply pipe 19, the liquid leakage can be completely prevented.

Although the application examples of the present invention have been described in detail with reference to the drawings, the chemical liquid spraying apparatus according to the present invention is not limited to the use of carbam as a chemical liquid, but may be applied to fursulfamide, fluazinam and other chemical liquids. Of course. Instead of using a commercially available chemical solution tank as it is, it is also possible to equip a dedicated tank that only needs to transfer the stock solution. Further, it goes without saying that the tractor on which the present apparatus is mounted is not limited to the illustrated one, but may be of various forms.

[0031]

As is apparent from the above description, according to the chemical spraying apparatus of the present invention, the water stored in the water storage tank and the chemical in the chemical tank are sucked and mixed by the pump, and the diluted chemical is sprayed from the spray nozzle. Because it is configured so that it can be sprayed, there is no need to dilute the chemical solution at a predetermined place or transfer the diluted chemical solution to the tank mounted on the tractor, as in the past, and to transfer the chemical solution to a commercially available chemical solution tank. It can be mounted on a tractor while it is inserted, and sprayed while diluting it. For this reason,
Even a chemical solution having a strong odor, such as a carbum agent, can be sprayed without discomfort, and since there is no need to dilute the chemical solution, the labor required for spraying the chemical solution can be reduced and the working efficiency can be greatly improved.

In particular, since there is no need to transfer the diluted chemical solution, when a highly corrosive material such as a carbamate is used as the chemical solution, the chemical solution is not spilled and the tractor is not damaged.

Further, since the flow rate adjusting means is provided in the water supply pipe and the chemical liquid supply pipe, the dilution ratio of the chemical liquid can be adjusted according to the traveling speed of the tractor, the state of the soil, and the like.

Furthermore, since the flow path of the chemical solution communicating with the spray nozzle is opened and closed by the raising and lowering operation of the tilling rotary,
When the tilling rotary descends, a chemical solution can be sprayed to sufficiently mix the soil and the chemical with the tilling rotary, and when the cultivating rotary rises, the tractor can be moved to the spraying area while spraying is stopped. it can. Therefore, it is possible to spray the chemical liquid properly at a predetermined place without any special operation without any special operation, and to concentrate on the driving operation without worrying about the spraying and stopping operation of the chemical liquid while the tractor is running. It is.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an example of a tractor.

FIG. 2 is a perspective view showing a front part of a tractor body partly broken away.

FIG. 3 is a schematic side view of the gantry.

FIG. 4 is a schematic front view of a gantry.

FIG. 5 is a system diagram showing flows of water and a chemical solution.

FIG. 6 is a schematic diagram showing a chemical solution supply pipe partially broken away;

FIG. 7 is a schematic side view showing a rotary tilling part;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tractor 2 Tillable rotary 3 Water storage tank 4 Frame 5 Chemical tank 6 Spray nozzle 10 Support part 17 Pump 18 Water supply pipe 19 Chemical liquid supply pipe 20 Liquid supply pipe 21 Merging pipe 22A, 22B Valve 25 Adjusting valve 33 Valve body

Claims (3)

[Claims] 1. A chemical spraying device mounted on an agricultural tractor having a tilling rotary mounted on a rear part of a vehicle body, comprising a water storage tank fixed to a portion of the vehicle body via a gantry. A support for detachably mounting a chemical solution tank is formed on the gantry, and a pump is mounted on the gantry for sucking and mixing the water stored in the water storage tank and the chemical in the chemical solution tank. A chemical spraying device, wherein a spray nozzle provided along a longitudinal direction of the tilling rotary is connected to a discharge port via a liquid supply pipe. 2. A water supply pipe, one end of which is connected to a water storage tank, and a chemical liquid supply pipe, one end of which is connected to a chemical liquid tank, have the other end connected to a suction port of a pump via a merging pipe. 2. The chemical spraying device according to claim 1, wherein a flow rate adjusting means is provided in each of the pipe and the chemical supply pipe. 3. The chemical spraying device according to claim 1, wherein a valve element that opens and closes a flow path of the chemical in conjunction with the raising and lowering operation of the tilling rotary is interposed in the liquid supply pipe.