JP4406760B2 - Tillage device with chemical spraying means - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention, for example, dilutes and sprays a chemical solution (stock solution) such as a soil disinfectant with fresh water on the soil on which crops such as cabbage are planted, and digs up the soil immediately after the chemical solution is sprayed to irrigate the chemical solution. The present invention relates to a tilling device equipped with chemical solution spraying means suitable for use in diffusing and mixing with soil.
[0002]
[Prior art]
In general, a chemical solution (stock solution) such as a carbam agent used for soil disinfection has strong irritation and high volatility, so that it is difficult to handle as it is, and the spraying effect is low and uneven spraying is likely to occur. Therefore, when spraying the chemical solution, it is required to dilute the chemical solution with clean water to an appropriate ratio (usually about three times).
[0003]
Conventionally, as a chemical solution spraying device in which a chemical solution is diluted with clean water and sprayed, for example, as described in JP 2000-135046 A, a chemical solution spraying means in which a large number of spray nozzles are arranged in parallel is used. At the front part of the agricultural tractor, which is disposed in the tillage device and connected to the tillage device, is provided with a stand for holding the fresh water tank, and a support portion for detachably supporting the chemical tank near the fresh water tank. Proposed to install and install a spraying pump that sucks and mixes fresh water and chemicals into the gantry, and discharges and supplies chemicals diluted with clean water from the spraying pump to the chemical spraying means Has been.
[0004]
[Problems to be solved by the invention]
However, in the proposed chemical spraying device, the tractor is equipped with a fresh water tank, a chemical solution tank, a spraying pump, etc., so it is necessary to make a major modification to the tractor, which would increase the cost of the device. was there.
[0005]
Also, when using highly corrosive chemicals such as carbam agents, the rubber seals of the spray pump are likely to be corroded, resulting in lower durability and not using rubber seals to improve durability. If a pump (such as one that rotates the impeller from the outside via a magnet) is used, the self-priming performance will be low, and it will not be possible to sufficiently suck out the chemical from the chemical tank, which will reduce the spraying performance. There was a problem that.
[0006]
Furthermore, in the proposed chemical solution spraying device, a manual pump needs to be provided in order to extract air in the liquid feeding passage, and thus the cost of the device is high and the chemical solution spraying work is troublesome. There was also.
[0007]
The present invention has been made in view of the problems as described above, and the object of the present invention is that the tractor does not require major modifications, and a spray pump with low self-priming performance is used. Even in this case, the required amount of chemical solution can be reliably sprayed, and the manufacturing cost and equipment cost can be kept as low as possible, and the chemical solution spraying operation can be performed easily and quickly. It is providing the tilling device provided with the spraying means.
[0008]
[Means for Solving the Problems]
  In order to achieve the above-described object, a tilling device provided with a chemical solution spraying means according to the present invention includes a fresh water tank holding member for holding a fresh water tank and a chemical solution tank detachably mounted on a tilling portion having a rotary claw. A chemical liquid tank holding member and a chemical liquid dilution supply device for diluting the chemical liquid in the chemical liquid tank with the clear water in the clear water tank and supplying the chemical liquid to the chemical liquid spraying means.Has been.
[0009]
  AndThe chemical solution tank is provided with a chemical solution inlet / outlet on the top side thereof, and is provided with an air opening means that can be arbitrarily opened and closed, and the chemical solution tank holding member sets the chemical solution inlet / outlet to the ground side when spraying the chemical solution. Therefore, it is supported rotatably on the tillage part.It is characterized by.
[0010]
The chemical liquid tank holding member is preferably rotatably supported by the fresh water tank holding member. In a further preferred aspect, the chemical liquid tank holding member is rotated upright when the chemical liquid inlet / outlet is on the top side. And a rotation restricting means for restricting at two positions, that is, a reverse position on the ground side.
[0011]
Preferably, the rotation restricting means includes a rotation restricting stopper provided on one of the fresh water tank holding member and the chemical liquid tank holding member, and the other provided on the other side to place the chemical liquid tank in the upright position. A first locking member that comes into contact with and engages with the rotation restricting stopper to hold, and a contact with and comes into contact with the turn restricting stopper to hold the chemical tank in the inverted position. And a second locking member.
[0012]
The atmosphere opening means is preferably an insertion pipe that is attached to an atmosphere opening provided in the chemical tank and extends to the vicinity of the bottom of the chemical tank, and an atmosphere opening passage connected to the insertion pipe, And an air release cock interposed in the air release passage.
[0013]
On the other hand, the chemical solution dilution supply device is preferably a spraying pump, a water supply passage for guiding fresh water in the fresh water tank from a fresh water outlet provided at a bottom thereof to the spraying pump, and a chemical solution in the chemical liquid tank And a discharge passage for guiding the diluted chemical solution diluted and mixed with fresh water from the spray pump to the chemical solution spraying means.
[0014]
In a preferred embodiment, the liquid supply passage is provided with an arbitrarily openable / closable air vent means for extracting air in the passage, and the spray pump, the water supply passage, the liquid supply passage, and the discharge The passage is disposed below the lowest water surface position of the fresh water tank.
[0015]
The spray pump is preferably disposed below the clear water outlet and the chemical solution inlet / outlet rotated to the ground side.
In another preferred embodiment, a flow rate adjusting valve and a flow meter are provided in the liquid feeding passage.
In another preferred embodiment, a spray opening / closing valve that is opened and closed in conjunction with the vertical movement of the tillage portion is disposed in the discharge passage.
[0016]
The fresh water tank holding member is preferably provided with first and second fresh water tank holding portions for holding the first and second fresh water tanks on the left and right sides, respectively, excluding the central portion thereof, and more preferably, the fresh water tank. The first and second chemical liquid tank holding members on which the first and second chemical liquid tanks are detachably mounted on the left and right sides of the rear surface of the holding member are rotatably supported.
[0017]
  In a preferred aspect of the tillage device having the chemical solution spraying means according to the present invention configured as described above, a fresh water tank holding member for holding a fresh water tank and a chemical solution tank are detachably mounted on the tillage unit. A chemical solution tank holding member and a chemical solution dilution supply device including a spray pump are provided, so that all tanks and devices necessary for chemical solution spraying are centrally deployed in the tillage device.To be doneTherefore, it is not necessary to make a major modification to the agricultural tractor, and the existing agricultural tractor can be used as it is, and the manufacturing cost and the equipment cost can be kept low.
[0018]
Further, when not in use, the chemical solution tank is held by the chemical solution tank holding member in an upright state with the chemical solution inlet / outlet as the top side, and when in use (when the chemical solution is sprayed), the chemical solution inlet / outlet is on the ground side. As described above, since it is rotated by a predetermined angle and is held in the inverted state, when spraying the chemical liquid, the fresh water in the fresh water tank is caused to flow from the fresh water outlet provided at the bottom through the water supply passage by the action of gravity. The chemical solution is allowed to flow down naturally to the spray pump, and the chemical solution in the chemical solution tank also flows to the dilution mixing portion of the water supply passage through the liquid supply passage from the chemical solution inlet / outlet which is rotated to the ground side. I'm damned.
[0019]
For this reason, even when using a spraying pump with low self-priming performance, the chemical solution can be diluted with clean water at a predetermined magnification to spray the required amount reliably, and the chemical solution inlet / outlet of the chemical solution tank can be grounded Since the chemical solution is derived therefrom, it can be used up almost completely without leaving the chemical solution.
[0020]
Further, when starting the chemical spraying operation, if the air venting means provided in the liquid feeding passage is opened and the opening / closing cock for fresh water provided in the water feeding passage is opened, the fresh water in the fresh water tank is Since it flows into the water supply passage, the liquid supply passage, the spraying pump, and the like that are arranged below the water surface position, the air in the liquid supply passage is pushed out by the fresh water through the air venting means. . Therefore, the air in each passage can be easily extracted without using a manual pump or the like.
[0021]
Further, when the chemical liquid tank is rotated to the inversion position, the air release cock of the air release means is closed so that the chemical liquid does not enter the insertion pipe and the air release passage constituting the air release means. In addition, if the cock is opened after the reversal, the inside of the chemical tank is always maintained at the atmospheric pressure, so that the supply of the chemical is not hindered.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a left side view showing an embodiment of a tilling device provided with chemical solution spraying means according to the present invention.
The cultivating apparatus 1 of the illustrated embodiment includes a cultivating unit 2 coupled to a support unit 80 at the rear end of an agricultural tractor (not illustrated) via a coupling mechanism 7 so as to be movable up and down, and a cultivating depth by the cultivating unit 2. A pair of left and right gauge wheels that are arranged between the tillage part 2 and the coupling mechanism 7 so that D can be varied and can support the tillage part 2 at an arbitrary height position from the ground. 9 and 9.
[0023]
A chemical spraying means 10 is disposed between the pair of left and right gauge wheels 9, 9 so as to bridge them. The chemical solution spraying means 10 is for spraying a solution obtained by diluting a chemical solution (here, a soil disinfectant in this case) in a chemical solution tank 31, 32, which will be described later, about three times with fresh water to the ground in front of the tillage unit 2. As shown schematically in FIG. 4, a support rod 11 attached to the tip of an arm member 11 a projecting forward from the cross beam members 5, 6 of the tillage portion 2, and the support rod 11 It consists of a number of injection nozzles 12, 12,... Arranged at predetermined intervals in the left-right direction.
[0024]
The tillage part 2 includes a rotary claw 3, a pair of left and right side plates 4, 4 disposed on the left and right sides of the rotary claw 3, and the transverse beam members 5, 6 connecting the pair of left and right side plates 4, 4. , Etc.
As shown in FIG. 2 in addition to FIG. 1, the plowing portion 2 has a pair of left and right support members 15, 15 fixed to the upper lateral beam member 5 and a width direction ( A fresh water tank holding member 20 composed of a rectangular grid frame body that is long in the left-right direction) is fixedly arranged.
[0025]
The fresh water tank holding member 20 is provided with first and second fresh water tank holding portions 20A and 20B for holding first and second fresh water tanks 21 and 22 each having a rectangular parallelepiped shape on the left and right sides excluding the central portion thereof. Yes. The first and second fresh water tank holding portions 20A and 20B are respectively positioned on the left and right portions of the fresh water tank holding member 20 and one side surface (center side) of the first and second fresh water tanks 21 and 22. A pair of front and rear vertical members 24 and 24, and a pair of front and rear center members 25 and 25 in which the front and rear side central portions of the first and second fresh water tanks 21 and 22 are brought into contact with each other. The bottom receiving member 26 has a rectangular frame shape for receiving the bottom portions of the two fresh water tanks 21 and 22.
[0026]
Further, on the left and right sides of the rear side of the fresh water tank holding member 20, specifically, on the support shafts 29, 29 projecting at the intersecting portions of the center member 25 and the bottom receiving member 26, respectively, A tube shaft protruding near the center of the first and second chemical tank holding members 30A and 30B (near the center of an upper and lower clamping member 35 described later) to which the second chemical tanks 31 and 32 are detachably mounted. 39 and 39 are rotatably fitted and supported so as not to come off.
[0027]
As the chemical liquid tanks 31 and 32, here, a 20L plastic tank for distributing a stock solution (a soil disinfectant such as a carbam agent) is used as it is, and the chemical liquid tanks 31 and 32 have the same configuration. 1. As can be understood by referring to FIG. 3 in addition to FIG. 2, chemical inlet / outlet ports 31a, 32a with lids are provided on the inclined corner surface portions 31c, 32c on one side of the top side (upper side). On the other side of the top (upper side), there are provided air opening ports 31b and 32b with lids that form air opening means that can be arbitrarily opened and closed.
[0028]
The air release means includes an insertion pipe 44 that is attached to the air release ports 31b and 32b with lids in a watertight state and extends to the vicinity of the bottom of the chemical liquid tanks 31 and 32, and one end of the insertion pipe 44. And the other end of the flexible pipe 45 connected to a position above the chemical liquid tanks 31 and 32 (the upper side of the fresh water tank holding member 20). And an air release cock 46.
[0029]
The first and second chemical liquid tank holding members 30A, 30B are a U-shaped bottom receiving member 33 which is brought into contact with the bottom surface portion and the left and right side surfaces of the chemical liquid tanks 31, 32, the chemical liquid tank 31, 32, the front surface of the chemical liquid tanks 31 and 32, and the upper and lower clamping members 35 that are U-shaped in contact with the center of the upper surface, and the bottom so as to contact the front surfaces of the chemical liquid tanks 31 and 32. The left and right clamping members 36 and 36 having a U-shape in a plan view, which are arranged in two upper and lower stages so as to straddle the receiving member 33 and the upper and lower clamping members 35, are detachably mounted horizontally between both ends of the left and right clamping members 36 and 36. The upper end portion of the bottom receiving member 33 and the upper side of the upper and lower clamping member 35 on the side where the inclined corner surface portions 31c, 32c of the appropriate tank holding members 37, 37 and the chemical liquid tanks 31, 32 are positioned. Department and It consists inclined plate portion 38 connected.
[0030]
When the chemical liquid tanks 31 and 32 are attached to the first and second chemical liquid tank holding members 30A and 30B, the tank holding members 37 and 37 are removed, and the rear surfaces of the chemical liquid tank holding members 30A and 30B are disposed. In the opened state, the bottoms 33, the upper and lower clamping members 35, and the left and right clamping members are respectively arranged from the rear so that the chemical tanks 31 and 32 are mirror-symmetrical with respect to the center line C (see FIG. 3). The tank holding members 37, 37 are then placed between both ends of the left and right clamping members 36, 36. Accordingly, the positions of the chemical liquid tanks 31 and 32 in the vertical, left and right, and front and rear directions are regulated, and are firmly fixed and held on the chemical liquid tank holding members 30A and 30B.
[0031]
Further, the chemical liquid tank holding members 30A and 30B are rotated in an upright position (the posture of the right chemical liquid tank 32 in FIGS. 2 and 3) where the chemical liquid inlet / outlets 31a and 32a are on the top side and the chemical liquid inlet / outlet. As a rotation restricting means for restricting at two positions, the reversal position (the posture of the left side chemical liquid tank 31 in FIGS. 2 and 3) where 31a and 32a are the ground side, on the left and right of the bottom side of the fresh water tank holding member 20 The rotation restricting stoppers 40 and 40 are projected, and the chemical liquid tanks 31 and 32 are held in the upright position by the lower left and right clamping members 36 and 36 of the chemical liquid tank holding members 30A and 30B. Accordingly, plate-shaped first locking members 41, 41 that are brought into contact with and locked by the rotation restricting stoppers 40, 40 project, and the inclined plates in the chemical liquid tank holding members 30A, 30B are projected. Part 3 , 38, the second locking members 42, 42 are held in contact with and locked to the rotation restricting stoppers 40, 40 in order to hold the chemical liquid tanks 31, 32 in the inverted position. Projected.
[0032]
Therefore, the chemical liquid tanks 31 and 32 are initially locked with the first locking member 41 coming into contact with the rotation stopper 40 like the right chemical liquid tank 32 in FIGS. The chemical liquid inlet / outlet ports 31a and 31b are mounted and held in the upright position on the top side by the first and second chemical liquid tank holding members 30A and 30B, and thereafter, when the spraying operation starts, the drawing is started from the upright position. 2. As in the left chemical liquid tank 31 in FIG. 3, the chemical liquid inlet / outlet ports 31a and 31b are on the ground side, and the reverse position where the second locking member 42 comes into contact with and is locked by the rotation stopper 40. The first chemical tank 31 is rotated clockwise (Q direction) when viewed from the rear, and the second chemical tank 32 is rotated counterclockwise (P direction) when viewed from the rear. Locked in position.
[0033]
In addition, the chemical tanks 31 and 32 are provided with the first locking member 41 and the second locking member at the upright position and the inverted position, respectively, due to the arrangement structure (depending on the position of the tube shaft 39 and the center of gravity, etc.). A moment in a direction in which the locking member 42 is pressed against the rotation restricting stopper 40 is generated, and the upright position and the inverted position are maintained unless a turning force is applied from the outside. , 32 need not be provided with fixing means for fixing at the upright position and the inverted position.
[0034]
Further, two fresh water tanks are configured and arranged on the left and right sides excluding the central part of the fresh water tank holding member 20 above the central part of the tillage part 2, the connecting mechanism 7 and the Since equipment such as a gear box of the tillage unit 2 is arranged, when arranging a single fresh water tank on the tillage unit 2, the fresh water tank should not interfere with the coupling mechanism 7 and the like. This is to prevent the working state of the tilling device from becoming unstable due to an increase in the position of the center of gravity of the entire device.
[0035]
On the other hand, between the tillage part 2 and the fresh water tanks 21 and 22, the chemical liquid K in the chemical liquid tanks 31 and 32 is diluted with the fresh water W in the fresh water tanks 21 and 22, and the chemical liquid spraying means 10 is used. A chemical solution dilution supply device 50 for supplying to is disposed.
[0036]
As shown in FIG. 4 in addition to FIG. 2, the chemical solution dilution supply device 50 is the right side of the support members 15 and 15 that support the fresh water tank holding member 20 as viewed from the rear. The spray pump 60 installed horizontally and the fresh water W in the fresh water tanks 21 and 22 are passed from the fresh water outlets 21a and 22a provided in the bottom portions 21c and 22c to the inlet 60a of the spray pump 60. The first and second water supply passages 51 and 52, the common water supply passage 53, the dilution / mixing passage 58, and the chemical liquid K in the chemical liquid tanks 31 and 32 rotated to the inversion position are guided. (Soil disinfectant such as carbam agent) is introduced from the chemical solution inlet / outlet 31a, 32a to the diluting / mixing portion 57 made of T-shaped or tridental cheese that forms part of the diluting / mixing passage 58. A flexible liquid guide 70 made of a sibble pipe or the like and a flexible chemical solution K ′ diluted and mixed with fresh water W from the discharge port 60b of the spray pump 60 to the spray nozzles 12, 12,. A discharge passage 63 made of a pipe or the like.
[0037]
The spraying pump 60 preferably uses a type in which an impeller is rotated by an electric motor 62 via a magnet from the outside without using a rubber seal material or the like. It is not so expensive.
[0038]
The water supply passages (the first and second water supply passages 51 and 52, the common water supply passage 53, and the dilution and mixing passage 58), the liquid supply passage 70, and the discharge passage 63 are the lowest of the fresh water tanks 21 and 22. Positioned on the water surface, that is, below the bottoms 21c and 22c, the spray pump 60 is below the fresh water outlets 21a and 22a and the chemical solution inlets 31a and 32a rotated to the ground side. Is distributed.
[0039]
The liquid supply passage 70 is provided with a flow rate adjusting valve 75 for chemical liquid and a flow meter 73 with an electromagnetic sensor 67, and in the downstream side thereof, the passages 51, 52, 53, 58, 63, 70 are provided. Air venting means that can be arbitrarily opened and closed for venting air is provided. The air venting means is, for example, disposed in an air vent passage 76 made of a flexible pipe or the like connected to the highest portion (the flow rate adjusting valve 75) of the liquid feeding passage 70 and a lower portion of the air vent passage 76. The upper part of the air vent passage 76 is attached to a portion higher than the highest water surface of the fresh water tanks 21, 22, for example, the upper side of the fresh water tank holding member 20.
[0040]
The first water supply passage 51 is provided with a three-way switching cock 49 for replenishing fresh water and switching a fresh water tank, and the common water supply passage 53 is provided with a flow control valve 55 for fresh water and an opening / closing cock 56 for fresh water. In the discharge passage 63, the operation member 66 is swung in conjunction with the vertical movement of the tillage portion 2 (the flat plate 69) via a wire or the like to open and close the discharge passage 63. A spray opening / closing valve 65 is provided.
[0041]
When performing the chemical solution spraying operation using the tillage device 1 having the chemical solution spraying means 10 of the present embodiment configured as described above, first, the first and second fresh water tanks 21 and 22 are filled with water. After that, the three-way switching cock 49 is switched to the second fresh water tank 22 side to open the fresh water opening / closing cock 56 and open the air venting cock 77. As a result, the fresh water W of the second fresh water tank 22 flows into the passages 51, 52, 53, 58, 70 and the spraying pump 60 disposed below the water surface position. The air in each of the passages 51, 52, 53, 58, 70 and the like is pushed out by W through the fresh water opening / closing cock 56 and the air vent passage 77. For this reason, the air in each passage can be easily extracted without using a manual pump or the like.
[0042]
Next, the air vent cock 77 is closed, and one end of the flexible pipe forming the liquid supply passage 70 is connected to one of the chemical liquid tanks 31 and 32 (here, the left chemical liquid tank 31) held in the upright position. Connected to the chemical solution inlet / outlet 31a, the insertion pipe 44 is attached to the atmosphere release port 31b, and one end of a flexible pipe forming the atmosphere release passage 45 is connected to the insertion pipe 44, and the atmosphere release cock 46 is closed. In this state, the chemical tank 31 is rotated to the inversion position and locked at that position. As a result, the chemical liquid K hardly enters the insertion pipe 44 and the atmosphere opening passage 45. After that, if the cock 46 is opened, the chemical liquid tank 31 is always maintained at atmospheric pressure. There will be no hindrance to supply.
[0043]
Subsequently, when electric power is supplied to the electric motor 62 to drive the spraying pump 60 and the tilling part 2 is operated to start tilling work by the tilling part 2, the leveling plate 69 is moved by the ground G. In conjunction with this, the spraying opening / closing valve 65 is opened, the chemical solution K in the chemical solution tank 31 is mixed with the fresh water W in the dilution mixing unit 57 and diluted, and the diluted chemical solution K ′ Is discharged from the pump 60 to the chemical solution spraying means 10 through the discharge passage 63 and sprayed to the soil from the spray nozzles 12, 12,... Of the chemical solution spraying means 10.
[0044]
At this time, while looking at the flow meter 73, the opening degree of the chemical liquid flow rate adjustment valve 75 and the fresh water flow rate adjustment valve 55 is adjusted to spray the amount of the diluted chemical liquid K ′ according to the traveling speed or the like. Is done.
[0045]
In the tilling device 1 provided with the chemical solution spraying means 10 of the present embodiment configured as described above, a fresh water tank holding member 20 that holds fresh water tanks 21 and 22 on the tillage unit 2, a chemical solution tank 31, Since the chemical liquid tank holding members 30A and 30B to which 32 is detachably attached and the chemical liquid dilution supply device 50 including the spraying pump 60 are provided, all the tanks and devices necessary for spraying the chemical liquid are integrated. As a result, the agricultural tractor is not required to be greatly modified, and the existing agricultural tractor can be used as it is, and the manufacturing cost and the apparatus cost can be kept low.
[0046]
Further, the chemical liquid tanks 31 and 32 are held in the chemical liquid tank holding members 30A and 30B in an upright state with the chemical liquid inlets and outlets 31a and 32a on the top side when not in use. Since the chemical solution inlet / outlet 31a, 32a is rotated by a predetermined angle so as to be on the ground side and is held at the reverse position, when spraying the chemical solution, the fresh water W in the fresh water tanks 21, 22 is caused by the action of gravity. Naturally flows from the fresh water outlets 21a, 22a provided in the bottom portions 21c, 22c to the spraying pump 60 through the first and second water supply passages 51, 52, the common water supply passage 53, and the dilution and mixing passage 58. In addition, the chemical liquid K in the chemical liquid tanks 31 and 32 is also swung to the ground side from the chemical liquid inlet / outlet 31a and 32a via the liquid supply passage 70 and the dilution and mixing passage 58. It is caused to naturally flow down to the dilution mixer 57.
[0047]
For this reason, even when a spraying pump with low self-priming performance is used, the chemical liquid K can be diluted with clean water W to a predetermined magnification and sprayed in a required amount, and the chemical liquid in the chemical liquid tanks 31 and 32 can be dispersed. Since the entrance / exit 31a, 32a is the ground side and the chemical solution K is led out therefrom, it can be used up almost completely without leaving the chemical solution.
It is preferable that the electromagnetic sensor 67 of the flow meter 73 detects that the chemical has run out and the spray pump 60 is automatically stopped via the relay 68 and the tank switching time is notified by a buzzer or the like.
[0048]
In addition, as the chemical tanks 31 and 32, since the container for the distribution of the product of the stock solution (soil disinfectant such as carbam agent) can be used as it is, the handling of the stock solution becomes extremely easy, and it is in a sealed state until just before use, so that it can be prevented from being altered. , Increase safety.
Further, since the chemical solution K in the chemical solution tanks 31 and 32 is not diluted, even if the spraying operation is stopped in the middle, the remaining solution can be easily stored on a short day, and alteration can be prevented.
[0049]
Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various designs can be used without departing from the spirit of the invention described in the claims. Can be changed.
[0050]
【The invention's effect】
As can be understood from the above description, according to the present invention, the agricultural tractor does not need to be greatly modified, and even when a spray pump with low self-priming performance is used, a chemical solution is required. A tilling device equipped with a chemical sprayer that can spray the amount reliably, and can keep the manufacturing and equipment costs as low as possible, and can easily and quickly carry out the chemical spraying operation. Can provide.
[Brief description of the drawings]
FIG. 1 is a left side view showing an embodiment of a tilling device provided with a chemical solution spraying means according to the present invention.
FIG. 2 is a view taken in the direction of arrow II in FIG.
FIG. 3 is a view taken in the direction of arrows III-III in FIG.
FIG. 4 is a schematic configuration diagram showing a chemical dilution supply device provided in the tilling device shown in FIG. 1;
[Explanation of symbols]
1 Tillage equipment
2 tillage section
3 Rotary claw
10 Chemical spraying means
20 Fresh water tank holding member
20A, 20B fresh water tank holding part
21, 22 Shimizu tank
21a, 22a Shimizu outlet
21c, 22c Bottom of fresh water tank (minimum water surface position)
30A, 30B Chemical liquid tank holding member
31, 32 Chemical tank
31a, 32a Chemical solution inlet / outlet
31b, 32b Open to atmosphere
40 Rotation restricting stopper (rotation restricting means)
41 First locking member (rotation restricting means)
42 Second stop member (rotation restricting means)
44 Insertion pipe (atmospheric release means)
45 Passage for opening to the atmosphere (atmospheric release means)
46 Air release cock (atmosphere release means)
50 Chemical dilution supply device
51, 52 Water passage
53 Common passage (water passage)
57 Dilution mixing section
58 Dilution / mixing passage (water passage)
60 Spraying pump
63 Discharge passage
65 Opening / closing valve for spraying
70 Liquid feed passage
73 Flowmeter
75 Chemical flow rate adjustment valve
76 Air vent passage (air venting means)
77 Air venting cock (Air venting means)
W Shimizu
K chemical
K 'Diluent solution

Claims (13)

A tilling device (1) having a chemical spraying means (10), and a fresh water tank holding member (20) for holding fresh water tanks (21, 22) on a tilling part (2) having a rotary claw (3). And a chemical tank holding member (30A, 30B) to which the chemical tank (31, 32) is detachably attached, and the chemical (K) in the chemical tank (31, 32) are transferred to the fresh water tank (21, 22). A chemical solution dilution supply device (50) that is diluted with fresh water (W) inside and supplied to the chemical solution spraying means (10), and a tilling device provided with the chemical solution spraying means,
The chemical liquid tank (31, 32) is provided with a chemical liquid inlet / outlet (31a, 32a) on the top side thereof, and an atmosphere opening means (44, 45, 46) that can be arbitrarily opened and closed. The holding member (30A, 30B) is rotatably supported on the tillage part (2) so that the chemical solution inlet / outlet (31a, 31b) is the ground side when the chemical solution is sprayed . Tillage device equipped with chemical spraying means. The tiller with the chemical solution spraying means according to claim 1 , wherein the chemical tank holding member (30A, 30B) is rotatably supported by the fresh water tank holding member (20). Rotation that regulates the rotation of the chemical liquid tank holding member (30A, 30B) at two positions, that is, an upright position where the chemical liquid inlet / outlet (31a, 32a) is on the top side and an inverted position on the ground side The tilling device provided with the chemical solution spraying means according to claim 2 , further comprising a regulating means (40, 41, 42). The rotation restricting means includes a rotation restricting stopper (40) provided on one of the fresh water tank holding member (20) and the chemical liquid tank holding member (30A, 30B) and the other provided on the other side. A first locking member (41) that contacts and locks the rotation restricting stopper (40) to hold the chemical liquid tank (31, 32) in the upright position, and the chemical liquid tank (31 , 32) and a second locking member (42) locked against the rotation restricting stopper (40) so as to be held at the inverted position. A tilling device comprising the chemical solution spraying means according to 3 . The atmosphere release means includes an insertion pipe (44) attached to an atmosphere release port (31b, 32b) provided in the chemical solution tank (31, 32) and extending to the vicinity of the bottom of the chemical solution tank (31, 32); An atmosphere opening passage (45) connected to the insertion pipe (44), and an atmosphere opening cock (46) interposed in the atmosphere opening passage (45). The tilling device provided with the chemical | medical solution spraying means as described in any one of Claim 1 to 4 . The chemical dilution supply device (50) includes a spray pump (60) and fresh water outlets (21a, 22c) provided with fresh water (W) in the fresh water tanks (21, 22) at the bottom (21c, 22c). 22a) to the spray pump (60) through the water supply passages (51, 52, 53, 58) and the chemical solution (K) in the chemical solution tank (21, 22) from the chemical solution inlet / outlet (31a, 32a). The liquid supply passage (70) leading to the dilution and mixing section (57) of the water supply passage (58), and the diluted chemical liquid (K ′) diluted and mixed with fresh water (W) are sprayed from the spray pump (60) to the chemical liquid. A plowing device (63) leading to the means (10), and a tilling device provided with the chemical solution spraying means according to any one of claims 1 to 5 . 7. The liquid medicine according to claim 6 , wherein the liquid feeding passage (70) is provided with air venting means (76, 77) that can be opened and closed arbitrarily for venting air in the passage (70). Tillage device with spraying means . The spray pump (60), the water supply passage (51, 52, 53, 58), the liquid supply passage (70), and the discharge passage (63) are the minimum water surface of the fresh water tank (21, 22). The tilling device provided with the chemical solution spraying means according to claim 6 or 7 , wherein the tilling device is disposed below the position (21c, 22c). The spray pump (60) is disposed below the fresh water outlet (21a, 22a) and the chemical solution inlet / outlet (31a, 32a) rotated to the ground side. A tilling device comprising the chemical solution spraying means according to any one of Items 6 to 8 . The liquid supply passage (70) is provided with a flow rate adjusting valve (75) and a flow meter (73), and the chemical solution spraying means according to any one of claims 6 to 9 is provided. Tillage equipment. Wherein the discharge passage (63), one of claims 6 to 10, the tilling unit (2) for spraying off valve interlocked to be brought off the vertical movement of (65) is characterized in that it is provided A tilling device comprising the chemical spraying means according to one item. The fresh water tank holding member (20) includes first and second fresh water tank holding portions (20A, 20B) for holding the first and second fresh water tanks (21, 22) on the left and right sides, respectively, excluding the central portion thereof. A tilling device provided with the chemical spraying means according to any one of claims 1 to 11 , wherein the tiller is provided . First and second chemical liquid tank holding members (30A, 30B) on which the first and second chemical liquid tanks (31, 32) are detachably attached to the left and right of the rear surface of the fresh water tank holding member (20), respectively. It is supported so that rotation is possible, The tilling apparatus provided with the chemical | medical solution spraying means as described in any one of Claim 1 to 12 characterized by the above-mentioned.

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