JP2004074095A - Tank for chemicals - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tank for chemicals, which enables enhancement of stirring performance. <P>SOLUTION: A shooting part 46 is disposed on the bottom surface 45 of the tank 17 for chemicals and a spillway port 28 and a suction port 29 are disposed adjacently to each other along the bottom surface of the shooting part 46. On the other hand, a stirrer 27 is disposed on the upper side than the bottom surface 45 of the tank 17 for chemicals. Further, the stirrer 27 is disposed on such a position that the flow of the chemicals by means of the stirrer 27 does not negate the flow of the chemicals from the spillway port 28 and the flow of the chemicals to the suction port 29. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a medicine tank device used for a tractor-mounted medicine spraying device, a self-propelled medicine spraying device, a speed sprayer, or the like.
[0002]
[Prior art]
In conventional self-propelled medicine spraying devices such as self-propelled boom sprayers, speed sprayers, etc., the bottom surface of the medicine tank is formed in a substantially planar shape over the entire surface, and a spill port is installed in the medicine tank, or a stirrer is used. Is used.
[0003]
[Problems to be solved by the invention]
However, in such a conventional medicine tank device, since the bottom surface of the medicine tank spreads in a substantially flat shape over the entire surface, the spill water is returned from the spill port to the medicine tank as a jet stream by the spill water. Even when stirring or mechanical stirring with a stirrer, when the amount of the drug solution is low, a part where the flow of the drug solution is small occurs, and it is not possible to suppress the precipitation of the drug, and also, it is difficult to prevent It was difficult to shoot with the spill jet, and the jet energy was not being used effectively.
In addition, in the case of mechanical stirring using a stirrer, when the liquid level of the chemical solution falls below the stirrer, the stirring performance is reduced, and the chemical solution is foamed. When the pump absorbs the chemical solution, pulsation occurs. there were. In particular, when the stirrer is installed horizontally, these problems are likely to occur.
[0004]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a chemical solution tank device that can improve the stirring performance.
Another object of the present invention is to provide a chemical solution tank device that can prevent a chemical solution from being foamed by a stirrer and can prevent pulsation from occurring in a pump.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the medicine tank device according to claim 1 is provided with a drop portion (46) on a bottom surface (45) of the drug tank (17), and the drop portion (46) has a spill port. (28) is provided along the bottom surface of the recess (46).
[0006]
According to the first aspect of the present invention, a drop portion is provided on the bottom surface of the medicine tank, and a spill port is provided along the bottom surface of the drop portion. Since the coming medicine is shot and agitated by the spill water jet, the stirring performance is improved.
[0007]
According to a second aspect of the present invention, there is provided the medicine tank device according to the first aspect, wherein a water inlet (29) is adjacent to the spill port (28) at the drop section (46) and the drop section. It is characterized by being provided along the bottom surface of (46).
[0008]
According to the second aspect of the present invention, the spill water is returned from the spill port into the medicine tank as a jet, and jet stirring is performed. Further, when the liquid medicine is absorbed from the water inlet, a flow of water absorption occurs at the drop portion. And since the spill port and the water suction port are provided adjacent to each other and along the bottom surface of the drop portion, a flow in one direction is formed in the drop portion by the flow by the spill water and the flow by the water absorption, The stirring performance of the chemical solution in the dropping part is improved.
[0009]
According to a third aspect of the present invention, in the medicine tank device according to the first or second aspect, a stirrer (27) is provided above the bottom surface (45) of the medicine tank (17). It is characterized by the following.
[0010]
According to the third aspect of the present invention, the chemical liquid is agitated by a stirrer from the bottom to the upper side, and the chemical liquid is agitated by the spill water or the spill by the spill water and the unidirectional flow by the spill water and the water absorption in the dropping portion. Is stirred, and therefore, is stirred over the entire area in the chemical solution tank where the drug is likely to precipitate.
[0011]
According to a fourth aspect of the present invention, there is provided the drug tank device according to the second aspect, wherein the stirrer (27) is located above the bottom surface (45) of the drug tank (17) and the stirrer (27). The flow of the chemical solution is provided at a position that does not cancel the flow of the chemical solution from the spill port (28) and the flow of the chemical solution to the water suction port (29).
[0012]
In the invention according to claim 4, the chemical liquid is stirred by the stirrer from the bottom to the upper side, and the chemical liquid is agitated by the agitation by the spill water and the unidirectional flow by the spill water and the water absorption in the drop portion. Is agitated over the entire area of the chemical solution tank where the water is likely to precipitate. In addition, since the flow of the chemical solution by the stirrer is provided at such a position that the flow of the chemical solution from the spill port and the flow of the chemical solution to the water intake port are not canceled, the stirring by the unidirectional flow of the spill water and the water absorption is performed by the stirrer. Not inhibited by stirring.
[0013]
According to a fifth aspect of the present invention, in the chemical tank device according to the third or fourth aspect, the stirrer (27) stops operating when the level of the chemical solution falls below the stirrer (27). It is characterized by being performed.
[0014]
In the invention of claim 5, when the liquid level of the chemical liquid is lower than the stirrer, the stirring by the stirrer is stopped, and the stirring by the spill water only, or the stirring by the spill water and the one-way flow by the spill water and water absorption. As a result, the chemical solution is agitated, so that the chemical solution is not foamed by the stirrer, and pulsation is prevented from being generated in the pump.
[0015]
According to a sixth aspect of the present invention, there is provided a medicine tank device according to any one of the first to fifth aspects, wherein the medicine tank device is used for spraying a small amount.
[0016]
In the invention according to claim 6, when a small amount of the small amount of water is sprayed, a drop portion is provided, and the stirring by the spill jet is particularly effective in improving the stirring performance.
[0017]
According to a seventh aspect of the present invention, there is provided a drug tank device according to any one of the first to sixth aspects, wherein the device is provided in a high clearance type self-propelled drug spraying device.
[0018]
In the invention according to claim 7, since the drop portion is provided on the bottom surface of the medicine tank, the center of gravity can be lowered, so that it is particularly necessary to consider the weight balance in order to prevent overturning. It is effective when provided in a self-propelled medicine spraying device of the type.
[0019]
In addition, the code | symbol in a parenthesis in the above is what expressed the corresponding element in drawing for convenience, Therefore, this invention is not limited to description on drawing. The same applies to the description in the column of “Claims”.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 are views showing an embodiment of the present invention. FIG. 1 is a perspective view of a self-propelled boom sprayer using a medicine tank device according to the present embodiment, and FIG. Rear view of the tank device, FIG. 3 is a sectional view taken along line III-III in FIG. 2, FIG. 4 is a sectional view taken along line IV-IV in FIG. 3, and FIG. 5 is a sectional view taken along line VV in FIG. It is.
[0021]
As shown in FIG. 1, a four-wheel traveling self-propelled boom sprayer using the medicine tank device according to the present embodiment includes a substantially rectangular body frame 11 having a long front-rear direction and front and rear wheels 12, 13. Are mounted, and four-wheel drive traveling is enabled by the drive rotation of the front and rear wheels 12 and 13. Similar narrow wheels are used for the wheels 12 and 13, and the body frame 11 is mounted upward away from the wheels 12 and 13, so that the ground height of the body frame 11 is increased. It is a high clearance type self-propelled boom sprayer (self-propelled drug spraying device). This allows the self-propelled boom sprayer to travel across crops in a field.
[0022]
The medicine tank 17 of the medicine tank device 1 according to the present embodiment is disposed at the center of the body frame 11 in the front-rear direction. A recess is formed in the center of the front end of the medicine tank 17, and an operator's seat 18 is provided in the recess. At the front end of the body frame 11, an operation device section 19 including an operation device for driving operation and an operation device for spraying a medicine is disposed at an interval in front of the driver's seat 18. . An operation unit 21 is configured by the driver's seat 18 and the operation device unit 19. Further, a boom nozzle device 23 is attached to the body frame 11 in front of the operation device section 19. An engine unit 25 is provided on the body frame 11 behind the medicine tank 17. The engine unit 25 includes an engine, a pump (reciprocating pump), a blower (rotary blower), a transmission (transmission), a hydraulic tank, a battery, a fuel tank, a hydraulic pump, and the like. The portion located above from 11 is covered by the engine unit cover 26.
[0023]
As shown in FIGS. 2 to 5, the medicine tank device 1 includes a medicine tank 17, a propeller type agitator 27 provided in the medicine tank 17, a spill port 28, and a water suction port 29.
The medicine tank 17 is formed in a substantially rectangular box shape, the upper part of the front surface 31 is formed in a tapered surface, and a concave portion 32 for the driver's seat 18 is formed in the center thereof. In addition, a concave portion 34 for piping or the like is formed in a lower portion of the rear surface 33 of the medicine tank 17. An inlet 37 is formed at the center of the upper wall 36 of the medicine tank 17, a strainer net 38 is installed at the inlet 37, and a lid 39 is opened and closed at the inlet 38. It is provided freely.
[0024]
A plurality of studs 43 embedded in the lower wall of the medicine tank 17 project downward from the lower surface 41 of the medicine tank 17, and the lower surface 41 of the medicine tank 17 is placed on the body frame 11. Then, these studs 43 are inserted into bolt holes formed in the body frame 11, and the body frame 11 is tightened by these studs 43 and nuts, so that the medicine tank 17 is fixed to the body frame 11. .
[0025]
On the flat bottom surface 45 of the medicine tank 17, there is formed a depression 46 projecting downward. The recess 46 is formed at a substantially central portion in the left-right direction of the bottom surface 45 so as to extend in the front-rear direction, and the rear side is formed slightly deeper than the front side.
A spill port 28 and a water suction port 29 are provided adjacent to and parallel to each other and at the bottom of the drop section 46 at the rear of the drop section 46 so as to open in the front-rear direction. The portion where the spill port 28 and the water suction port 29 are provided is slightly dug down, and the water suction port 29 is dug slightly deeper. The spill port 28 and the water suction port 29 are both provided so as to open along the bottom surface of the recess 46. Then, the chemical solution in the medicine tank 17 is absorbed by the pump from the water suction port 29, is pressure-fed to the nozzle of the boom nozzle device 23, is sprayed from the nozzle, and the spillage is jetted into the medicine tank 17 from the spill port 28. (Jet), and the chemical liquid in the medicine tank 17 is agitated by a spill (jet agitation) by the spill jet.
[0026]
A stirrer 27 is provided at a corner on the side of the spill port 28 on the lower side of the rear wall 48 of the medicine tank 17 so that the stirring blade 27a moves the medicine toward the front. The agitator 27 is installed so as to be located slightly above the bottom surface 45 of the medicine tank 17, and the tip of the stirring blade 27 a rotates near the bottom surface 45. A rotation shaft of the stirrer 17 is rotatably penetrated through a rear wall 48 of the chemical solution tank 17, and a pulley 49 is fixed to a portion projecting from the rear wall 48 to the outside. Reference numeral 27a is designed to be driven to rotate.
[0027]
In the medicine tank device 1 configured as described above, as shown by the solid arrow in FIG. 3, near the bottom surface 45, the stirrer 27 causes the flow of the drug solution flowing forward from the stirrer 27, and this flow is It flows along the front wall 51 of the medicine tank 17 and further flows backward along the side wall 52 on the water inlet 29 side. As a result, the chemical near the bottom surface 45 of the chemical tank 17 is stirred.
On the other hand, the spill water is returned from the spill port 28 into the medicine tank 17 as a jet, jet-stirred, and flows forward from the rear spill port 28 at the drop portion 46 as shown by a broken arrow. In addition, when the liquid medicine is absorbed from the water inlet 29, a flow of water flows from the front to the rear water inlet 29 in the drop portion 46 as shown by a dashed line arrow. Since the spill port 28 and the water suction port 29 are installed adjacent to and parallel to each other, a one-way flow is formed in the dip 46 by the flow of the spill and the flow of the water, and the dip 46 The agitation performance of the chemical solution No. 46 is improved. The stirred chemical solution is absorbed through the water inlet 29.
[0028]
The stirrer 27 is installed so that the flow of the chemical solution by the stirrer 27 flows in the same direction as the one-way flow due to the spill water and the water absorption. The one-way flow is not canceled out, so that the agitation by the one-way flow of the residual water and the water absorption is not hindered by the agitation by the agitator 27. As described above, as another method of installing the stirrer 27 so that the flow of the chemical solution by the stirrer 27 does not cancel the one-way flow due to the residual water and the water absorption, for example, the lower side of the front wall 51 of the medicine tank 17 is used. The stirrer 27 may be installed at the corner on the side of the water intake port 29 such that the stirring blade 27a of the stirrer 27 moves the chemical solution backward.
In this way, in the medicine tank device 1, the vicinity of the bottom of the medicine tank 17 where the medicine is liable to settle is agitated over the entire region by the stirring by the stirrer 27 and the stirring by the flow of the residual water and the water absorption. Therefore, precipitation of the drug is reduced.
[0029]
In addition, a drop portion 46 is provided, and the spill port 8 is provided along the bottom surface of the drop portion 46, so that the chemicals which concentrate and precipitate in the drop portion 46 are aimed at by the spill jet. The stirring performance is improved. In particular, when a small amount of a small amount of concentrated water is sprayed, the stirring with the spill jet is effective.
[0030]
Further, when the liquid level of the chemical solution falls below the agitator 27, the agitation by the agitator 27 is stopped, and the chemical solution is agitated by the agitation by the spill water and the unidirectional flow of the spill water and the water absorption. In addition, the chemical liquid is not foamed by the stirrer 27, and the pulsation of the pump is prevented.
[0031]
In addition, in a high clearance type self-propelled boom sprayer having a high center of gravity, it is particularly necessary to consider the weight balance in order to prevent overturning. Since the recess 46 is provided, the center of gravity can be lowered.
[0032]
In the above-described embodiment, the stirrer 27 is provided. However, when the capacity of the medicine tank 17 is small, the stirrer is not provided and the spill water is stirred and the one-way flow due to the spill water and the water absorption. Stirring may be performed. Further, only the agitation of the spill water may be performed without forming a one-way flow due to the spill water and the water absorption.
[0033]
【The invention's effect】
As described above, according to the medicine tank device of the first aspect, the drop portion is provided on the bottom surface of the medicine tank, and the spill port is provided along the bottom surface of the drop portion at the drop portion. Since the medicine which is concentrated and precipitated in the dropping portion can be aimed at and stirred by the spill jet, the stirring performance can be improved.
[0034]
According to the medicine tank device of the second aspect, the spill water is returned from the spill port to the inside of the medicine tank as a jet, and the jet agitation is performed. . And since the spill port and the water intake port are provided adjacent to each other along the bottom surface of the drop portion, a flow in one direction can be formed in the drop portion by the flow by the spill water and the flow by the water absorption. It is possible to improve the stirring performance of the chemical solution in the dropping portion.
[0035]
According to the medicine tank device of the third aspect, the chemical solution is stirred by the stirrer from the bottom to the upper side, while the dropping portion is stirred by the spill water, or the stirring by the spill water and the one by the spill water and the water absorption. The chemical solution is agitated by the agitation due to the flow in the direction, whereby it is possible to agitate the entire region in the chemical solution tank where the drug is likely to precipitate.
[0036]
According to the medicine tank device of the fourth aspect, while the chemical solution is agitated by the stirrer from the bottom to the upper side, the dropping portion is agitated by the residual water, and is agitated by the unidirectional flow by the residual water and the water absorption. Thus, the chemical solution can be stirred, and therefore, can be stirred over the entire region in the chemical solution tank where the drug is likely to precipitate. Moreover, since the flow of the chemical solution by the stirrer is provided so as not to cancel the flow of the chemical solution from the spill port and the flow of the chemical solution to the water suction port, the stirring by the unidirectional flow of the spill water and the water absorption is performed by the stirrer. Inhibition by stirring can be prevented.
[0037]
Further, according to the medicine tank device of the fifth aspect, when the liquid level of the drug solution is lower than the stirrer, the stirring by the stirrer is stopped, and the stirring by only the spillage or the spillage and the spillage and the water absorption are performed. The chemical solution is agitated by the one-way flow of the liquid, so that the chemical solution can be prevented from being foamed by the stirrer, and the pulsation of the pump can be prevented.
[0038]
According to the medicine tank device of the sixth aspect, when a small amount of a small amount of water is applied in a small amount, a dropping portion is provided, and stirring with a spill jet is performed to improve the stirring performance. Especially effective.
[0039]
Further, according to the medicine tank device of the seventh aspect, since the drop portion is provided on the bottom surface of the medicine tank, the center of gravity can be lowered, so it is particularly necessary to consider the weight balance in order to prevent overturning. It is effective if provided in a certain high clearance type self-propelled medicine spraying device.
[Brief description of the drawings]
FIG. 1 is a view showing an embodiment of the present invention, and is a perspective view of a self-propelled boom sprayer using a medicine tank device according to the present embodiment.
FIG. 2 is a rear view of the medicine tank device.
FIG. 3 is a sectional view taken along the line III-III of FIG. 2;
FIG. 4 is a sectional view taken along the line IV-IV of FIG. 3;
FIG. 5 is a sectional view taken along the line VV of FIG. 3;
[Explanation of symbols]
1 Drug tank device 17 Drug tank 27 Stirrer 28 Spill port 29 Water suction port 45 Bottom surface 46 Drop part

Claims (7)

A drop portion (46) is provided on the bottom surface (45) of the medicine tank (17), and a spill port (28) is provided at the drop portion (46) along the bottom surface of the drop portion (46). A drug tank device. A water inlet (29) is provided in the recess (46) adjacent to the spillway (28) and along the bottom surface of the recess (46). 3. The drug tank device according to item 1. 3. The medicine tank device according to claim 1, wherein a stirrer (27) is provided above the bottom surface (45) of the medicine tank (17). 4. A stirrer (27) is provided above the bottom surface (45) of the medicine tank (17), and the flow of the chemical solution by the stirrer (27) causes the flow of the chemical solution from the spill port (28) and the water absorption port (29). 3. The chemical tank device according to claim 2, wherein the chemical tank device is provided at a position so as not to cancel the flow of the chemical solution to the chemical tank. The medicine tank device according to claim 3 or 4, wherein operation of the stirrer (27) is stopped when a liquid level of the chemical solution falls below the stirrer (27). The medicine tank device according to any one of claims 1 to 5, wherein the medicine tank device is used for spraying a small amount. The drug tank device according to any one of claims 1 to 6, wherein the drug tank device is provided in a high clearance type self-propelled drug spraying device.

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