JP2511674Y2 - Fertilizer - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a fertilizer application machine for injecting fertilizer into a field, and more specifically, in a fertilizer application machine having deep and shallow nozzle groups The present invention relates to a pipe switching structure for sending fertilizer to these deep or shallow nozzles.

(B) Conventional technology Generally, fertilizer applicators include those that evenly distribute fertilizer in the field, those that inject streaks in the field, and those that inject dots at the seeding section. From the viewpoint of efficiency and environmental protection, a method of injecting dots (hereinafter referred to as a dot injection) is drawing attention.

In addition, in a fertilizer application method of injecting paste or liquid fertilizer into the field in a streak pattern (hereinafter referred to as streak), a deep layer nozzle and a shallow layer so that the fertilizer can be injected into a deep part and a shallow part in the field. Some are equipped with a nozzle.

Further, the point-fed fertilizer applicator, which is a paste or liquid fertilizer supplied from the fertilizer pump to the distribution valve, discharges a predetermined amount from a nozzle that is driven into the field at a predetermined pitch. These nozzles have been devised in two stages, one for the deep layer and one for the shallow layer so that the fertilizer can be injected into the deep portion and the shallow portion in the field.

(C) Problems to be Solved by the Invention By the way, in the fertilization work by the fertilizer applicator described above,
By injecting fertilizer into each part of the shallow and deep layers in the field, it can be dealt with in the early stage of seedling growth and further growth, but the amount of fertilizer injected into the shallow and deep layers changes once set. Is difficult, depending on the type of seedling or the type of fertilizer,
It is required that the amount of fertilizer injected into the shallow and deep layers can be set appropriately and easily.

Therefore, the present invention provides a fertilizer applicator that solves the above-mentioned problems by installing a switching valve that switches fertilizer from each discharge port of the fertilizer pump so as to communicate with the deep-layer distribution valve or the shallow-layer distribution valve. The purpose is to do.

(D) Means for Solving the Problems The present invention has been made in view of the above circumstances, and for example, referring to FIGS. 1, 3, and 4, for deep layers (83,85 ) And a shallow layer (83 ′, 85 ′) nozzle group, and the fertilizer supplied to these nozzles (83,83 ′, 85,85 ′) is supplied to the nozzles (83,83 ′, 85,85 ′). In the fertilizer applicator (15) that is injected into the ground from the tip of
a) having a pump unit (10) for discharging fertilizer from the fertilizer tank (7, 7) from each of these discharge portions (10a) and the nozzles (83, 85) for the deep layer. Distributing valve for deep layer (25) for distributing, and distributing valve for shallow layer (27) for distributing fertilizer to each nozzle (83 ', 85') for shallow layer.
And the discharge unit (10a) of the pump unit (10), and the fertilizer from each discharge unit (10a) is communicated with the deep-layer distribution valve (25) or the shallow-layer distribution valve (27). And a switching valve (19) for performing such switching.

(E) Action Based on the above configuration, when fertilizer is applied in the field by the fertilizer applicator (15), the fertilizer from the fertilizer tanks (7, 7) is transferred to the pump unit as the fertilizer applicator (15) moves forward. It is discharged from each discharge part (10a) of the pump unit (10) by the (10), and is switched to the deep layer distribution valve (25) or the shallow layer distribution valve (27) at a predetermined ratio by each switching valve (19). And is pressure-fed to the distribution valve (25) for the deep layer or the distribution valve (27) for the shallow layer.

At that time, the distribution ratio of the fertilizer to the deep-layer distribution valve (25) and the shallow-layer distribution valve (27) by the switching valve (19) is a combination according to the number of discharge parts (10a) of the pump unit (10). Is arbitrarily selected from among.

Then, the fertilizer pressure-fed to the deep distribution valve (25) reaches the deep nozzle (83,85), and the deep nozzle (83,85).
Fertilization is applied from the tip of the to the deep layer in the field.

On the other hand, the fertilizer pressure-fed to the shallow layer distribution valve (27) reaches the shallow layer nozzles (83 ′, 85 ′), and the shallow layer nozzles (83 ′, 85 ′,
The fertilizer is applied from the tip of 85 ') to the shallow layer in the field.

(F) Effect of the Invention As described above, according to the present invention, each switching valve (1
By 9), it can be arbitrarily and easily switched so as to communicate with the deep-layer distribution valve (25) or the shallow-layer distribution valve (27), so that the deep-layer fertilizer application amount and the shallow-layer fertilizer application amount can be arbitrarily and easily changed. be able to. Therefore, according to the growth of the seedlings, the seedlings absorb a small amount of shallow fertilizer in the early stage of the growth of seedlings, and when the seedlings grow further, the large amount of fertilizer in a deep layer is absorbed. Since the optimum amount of fertilizer can be absorbed according to the growth, the growth of seedlings can be promoted.

In addition, since the fertilizer application amount in the deep layer and the fertilizer application amount in the shallow layer can be arbitrarily and easily changed, fertilizer application can be performed quickly corresponding to various varieties.

The reference numerals in parentheses refer to the drawings and do not limit the configuration in any way.

(G) Embodiment An embodiment according to the present invention will be described below with reference to the drawings.

As shown in FIG. 3, the traveling section 1 of the passenger rice transplanter is equipped with front wheels.
It has a traveling machine body 5 supported by 2, 2 and rear wheels 3, 3. The traveling machine body 5 has an engine 6 mounted on the front upper part of the front wheels 2, 2. Fertilizer tanks 7, 7 are arranged on the left and right sides of the engine 6, and a suction hose 9 is connected to the fertilizer tanks 7, 7. The suction hose 9 is extended to the rear of the machine body 5 and communicates with and is connected to a fertilizer pump 10 arranged at the center of the machine body 5. A sub tank 11 is provided below the fertilizer application pump 10.

In addition, the top link 12 and the lower link are behind the airframe 5.
A fertilizer application machine 15 is connected via 13 and 13 so that it can be moved up and down. The PTO shaft is located between the top link 12 and the lower links 13, 13.
16 are arranged. 6 outlets of the fertilizer pump 10
Six inlets of the indicator 17 fixed to the lower link 13 and 10a are connected by tubes. And the first
As shown in the figure, a switching valve 19 is connected and communicated with each of the six outlets of the indicator 17, and the switching lever 19
With the rotation of a, the valve 19b is rotated to switch the flow of fertilizer, and the stopper 19c stops the rotation of the switching lever 19a. Further, the indicator 17 is configured so that the switch 17a can detect that the fertilizer is reliably flowing and can be confirmed by the monitor 20 in the driver's seat.

The traveling unit 1 of the above-mentioned riding rice transplanter is a conventional one as it is.

Then, the flow of fertilizer is as shown in FIG.
At a substantially horizontal position of the switching lever 19a, the switching lever 19a is switched so as to communicate with a discharge port 19d to a deep-layer distribution valve 25 described later, and as shown in FIG. 1 (b), at a vertical position above the switching lever 19a, The discharge port 19e to the shallow-layer distribution valve 27, which will be described later, is switched to communicate with the discharge port 19e to the shallow-layer distribution valve, as shown in FIG.
If a water hose is connected to, the water will flow to the deep layer distribution valve 25 via the switching valve 19, and the inside of the tube between the switching valve 19 and the deep layer distribution valve 25 can be washed, and at the same time, to the deep layer distribution valve. By connecting a water hose to the discharge port 19d, the inside of the tube between the switching valve 19 and the shallow layer distribution valve 27 can be cleaned.

In addition, as shown in FIG. 2, the discharge port 19d to the deep-layer distribution valve of each switching valve 19 communicates with one deep-layer connector 21 through a tube, and the shallow layer of each switching valve 19 is connected. The discharge port 19e to the distribution valve is connected to one shallow layer connector 22 via a tube. The deep-layer connector 21 is a tube
The distribution valve 25 for deep layers of the fertilizer application machine 15 is connected via 23, and the connector 22 for shallow layers is connected to the distribution valve 27 for shallow layers of the fertilizer application machine 15 via a tube 26.

Further, as shown in FIG. 4, the fertilizer application machine 15 is a frame.
29 has a transmission section 30 and a fertilizer section 31 at the front thereof, and a ground working section 32 at the rear thereof.

In addition, a traveling section 1 of the riding rice transplanter is connected to the front of the fertilizer application machine 15, so that the fertilizing work machine 15 can be towed while being transmitted with power from the traveling section 1 of the riding rice transplanter. It is configured. The traveling unit 1 of the riding rice transplanter and the frame 29 are connected to each other by the top link 12 and the lower links 13 and 13 so as to be able to move up and down, and the coupler 33 is connected to the PTO shaft 16 so that the PTO shaft 16 can Power is transmitted to the coupler 33.

As shown in FIG. 6, the coupler 33 has a gear portion.
34 are connected, and a gear case 35 is fixed to the frame 29 so as to cover the gear portion 34. A sprocket 36 is connected to the gear portion 34. The sprocket 36 is
Power is transmitted to a sprocket 39 fixed to the counter shaft 37 via a chain 40. The speed change unit 30 is composed of the sprockets 36 and 39 and the chain 40, and is configured to change speed by exchanging the sprockets 36 and 39.

Further, a sprocket 41 is fixedly mounted on the counter shaft 37, and a sprocket 43 is fixedly mounted on a first shaft 42 for transmitting power to the fertilizer application section 31, and a chain is transferred from the sprocket 41 to the sprocket 43. Power is transmitted via 44. Further, a sprocket 45 is fixedly mounted on the first shaft 42, and a sprocket 47 is fixedly mounted on a second shaft 46 for transmitting power to the ground working part 32. The sprockets 45 and 47 have the same number of teeth and are connected via a chain 48. As a result, the power is transmitted from the first shaft 42 to the second shaft 46 and the rotation speed is the same.

A sprocket 49 is fixedly mounted on the first shaft 42, and the sprocket 49 is fixed to the shafts of the deep-layer distribution valve 25 and the shallow-layer distribution valve 27.
Power is transmitted to the chain via the chain 53.

Further, as shown in FIG. 7, there are spline portions 42a, 42a 'at both ends of the first shaft 42. A spline hole 55a of a boss portion of a sprocket 55 is fitted in the spline portion 42a, and the sprocket 55 is connected to the first shaft 42 so as not to rotate but to move in the axial direction. Collars 56, 56, 56 are inserted through the spline portion 42a, and the collars 56, 56, 56 and sprocket 55 inserted through the spline portion 42a are attached to the first shaft 42 by bolts 57 and rings 59. It is fixed and fixed.

Bearings 60, 60 are fitted around the boss portion of the sprocket 55, and one side of the chain case 61 is arranged so as to support the bearings 60, 60. Bearings 62, 62 are supported on the other side upper portion of the chain case 61, and an upper crankshaft 65 to which a sprocket 63 is fixed is fitted on the inner circumference of the bearings 62, 62.
Further, as shown in FIG. 4, bearings 66, 66 are supported below the upper crankshaft 65 mounting portion of the chain case 61, and a sprocket 67 is fixed to the inner periphery of the bearings 66, 66. The lower crankshaft 69 is fitted. The sprockets 63, 67 have the same number of teeth, and the chain tension is adjusted by the guide wheels 71, 72 via the chain 70, and the power is transmitted from the sprockets 55.

A case stopper 73 is fixedly provided on the lower PTO shaft 16 side of the chain case 61, and the case stopper 73 is slidably attached to a support 75 fixed to the frame 29. The support 75 has a number of holes, and pins are inserted into the holes to support the case stopper 73.
It is fixed at 75.

In addition, the case stopper 73 and the support 75 together with the combination of the chain case 61 and the collars 56, 56, 56.
The position of the chain case 61 can be changed by a combination with a large number of holes.

Further, as shown in FIG. 7, one end of the upper crank arm 77 is fixed to one end of the upper crank shaft 65, and the other end of the upper crank shaft 65 is connected to the upper crank arm 7.
One end of 7'is fixed, and these upper crank arms 77 and 77 'are attached to the upper crankshaft 65 with a 180-degree angle shift. A shaft 79 is fixed to the other end of the upper crank arm 77, 77 ', and bearings 80, 80 are fitted on the outer peripheral surface of the shaft 79. A nozzle holder 81 is rotatably supported on 79. The inner races of the bearings 80, 80 are retained and retained on the shaft 79 by bolts 84 and rings 82. Further, as shown in FIG. 9, nozzles 83 and 83 'are fixed to one side of the nozzle holder 81.

Further, one end of a lower crank arm 86 is fixed to one end of the lower crank shaft 69, and one end of a lower crank arm 86 'is fixed to the other end of the lower crank shaft 69. The lower crank arms 86 and 86 'are attached to the lower crank shaft 69 with a 180-degree angle offset. The mounting angle of the upper crank arm 77 to the upper crank shaft 65 and the mounting angle of the lower crank arm 86 to the lower crank shaft 69 are the same, and the mounting angle of the upper crank arm 77 'to the upper crank shaft 65 is the same. And the lower crank arm 86 'is attached to the lower crank shaft 69 at the same angle.

Further, as shown in FIGS. 7 and 8, there is an elongated hole 86a at the other end of the lower crank arm 86, and one end of a shaft 87 is inserted through the elongated hole 86a. It is movable in the long hole 86a and is fixed to the lower crank arm 86 by a nut 89. An adjusting bolt 90 is rotatably inserted at the end of the lower crank arm 86, and the adjusting bolt 90 is prevented from moving in the axial direction with respect to the lower crank arm 86 by a retaining ring 91. The adjusting bolt 90 extends to the peripheral wall portion of the elongated hole 86a,
Further, the shaft 87 is screwed into the elongated hole 86a, and the screw portion 90a of the adjusting bolt 90 and the screw portion 87a of the shaft 87 are screwed together. By rotating the adjusting bolt 90, the shaft 87 can be moved in the elongated hole 86a.

The other end of the shaft 87 is inserted into the slot 92a of the nozzle holder 92, the nozzle holder 92 is slidable within the slot 92a, and the bolt 93 and the ring 95
The shaft 87 is configured to be prevented from coming off. Further, the nozzle 8 is provided on one side of the nozzle holder 92.
3,83 'is stuck.

Therefore, the rotation of the upper crankshaft 65 is transmitted to the upper crankarms 77 and 77 ', rotating the nozzle holders 81 and 81, and the rotation of the lower crankshaft 69 is transmitted to the lower crankarms 86 and 86'. Rotate the nozzle holders 92,92. Along with this, the nozzles 83, 83 ', 85, 85' fixed to the nozzle holders 81, 81, 92, 92 also rotate, and the nozzles 83, 83 ', 8
5,85 'is driven into the ground to inject fertilizer into the ground.

In addition, the spline portion 42 at the other end of the first shaft 42
Also in a ', it is configured similarly to the spline portion 42a. Therefore, the nozzles 96, 9 are provided on one side of the nozzle holder 81.
6'is fixed, and the nozzle 9 is attached to one side of the other nozzle holder 81.
7,97 'are fixed, the nozzles 96, 96' are fixed to one side of the nozzle holder 92, and the nozzles 97, 97 'are fixed to one side of the other nozzle holder 92.

And the upper crankshaft 65,65, the lower crankshaft 69,6
9. A driving means 98 is composed of the upper crank arms 77, 77, 77 ', 77' and the lower crank arms 86, 86, 86 ', 86'.

Further, as shown in FIGS. 4 and 5, there are spline portions 46a, 46a 'at both ends of the second shaft 46. A spline hole 99a of a boss portion of a sprocket 99 is fitted in the spline portion 46a, and the sprocket 99 is connected to the second shaft 46 so as not to rotate and movable in the axial direction. Collars 100, 100, 100 are inserted in the spline portion 46a, and the collar 1 inserted in the spline 46a is
00,100,100 and sprocket 99 are bolt 101 and ring 1
It is fixed to the second shaft 46 by 02 and fixed.

The sprocket 99 has a seeding device driving unit 103.
Are connected, and the sprocket 99 and the seeding device drive unit
A chain case 105 is arranged so as to cover 103.
A case stopper 106 is fixed to the lower part of the chain case 105, and the case stopper 106 is slidably attached to a support 107 fixed to the frame 29.
Holes 109, 109, 109, and 109 are formed in the support 107, and the case stopper 106 is fixed to the support 107 by inserting a pin 108 into the hole 109.

Further, the chain case 105 and the collar 100, 100, 100
And the combination of the case stopper 106 and the holes 109, 109, 109, 109 of the support 107, the position of the chain case 105 can be changed.

The drive from the seeding device driving unit 103 is transmitted to a sprocket 112 fixed to a seeding nozzle shaft 111 via a chain 110, and a large number of seeding nozzles 113 are provided around the seeding nozzle shaft 111. A seeding nozzle section 115 is formed, and a seed hopper 117 for accommodating the seed 116 is arranged adjacent to the seeding nozzle section 115 to form a sowing apparatus 119. Rollers 120 and 121 are axially supported below the seeding device 119.

Further, the spline portion 46a 'side of the second shaft 46 is also configured in the same manner as the spline portion 46a side.

A vacuum pump 122 is attached to the rear of the frame 29, and the vacuum pump 122 communicates with the seeding nozzle parts 115, 115 via tubes 123, 123.

Then, at both ends of the support 107, gauge wheels 12 are provided.
5,125 are rotatably supported, and sleds 126,126 are attached to both ends of the support 75.
The sleds 126, 126 are configured to support and move the fertilizer application machine 15.

Further, as shown in FIG. 13, by the switching valve 19, four out of six stations of the fertilizer application pump 10 communicate with the deep layer distribution valve 25 via the deep layer connector 21 and the tube 23.
2 out of 6 stations of 10 are connector for shallow layer 22 and tube 26
Through the shallow layer distribution valve 27.

Further, as shown in FIGS. 5, 14, and 15, a pipe 132 is attached to the frame 29 in front of the distribution valves 25 and 27. A pipe hole 132a is provided at one side of the center of the pipe 132.
There is a joint 133,135,136,1 on the upper surface of the pipe 132.
37, 139, 140, 141, 142 are fixedly installed, and each tube hole 132b is opened in the joint mounting portion of the pipe 132.

Then, as shown in FIG. 13, a tube 143 is connected to the deep layer distribution valve 25, and the tube 143 is inserted into the pipe 132 from the pipe hole portion 132a, and the tube hole 1
32b is inserted and leads to the joint 133. The joint 133 communicates with the nozzle 85 via a tube 145. Furthermore, the deep-layer distribution valve 25 communicates with the nozzle 83 via a tube 146, a joint 137, and a tube 147, and communicates with the nozzle 97 via a tube 149, a joint 139, and a tube 150, and a tube 151, It communicates with the nozzle 96 via a joint 142 and a tube 152.

The shallow layer distribution valve 27 includes the tube 153 and the joint 1.
35, through the tube 155 to the nozzle 85 ′, through the tube 156, the joint 136, and the tube 157 to the nozzle 83 ′, and through the tube 159, the joint 140, and the tube 160, the nozzle 97 ′, And communicates with the nozzle 96 ′ through the tube 161, the joint 141, and the tube 162.

Since the present embodiment is configured as described above, the paste or liquid fertilizer 127 is sent from the fertilizer tanks 7, 7 to the fertilizer pump 10 via the suction hose 9, and the six fertilizer pump 10 discharge ports 10a to the tubes. Is pressure-fed to the indicator 17 and the six switching valves 19 via the, and is switched by the six switching valves 19 to the deep-layer distribution valve 25 or the shallow-layer distribution valve 27 at a predetermined ratio to the deep-layer distribution valve 25. The fertilizer switched so as to communicate with the discharge port 19d is pressure-fed to the deep-layer distribution valve 25 via the tube, the deep-layer connector 21, and the tube 23, and also communicates with the discharge port 19e to the shallow-layer distribution valve 27. The fertilizer that has been switched to is pumped through the tube, the shallow layer connector 22 and the tube 26 to the shallow layer distribution valve 27.

Then, the fertilizer is supplied from the deep distribution valve 25 through the tube, joint, and tube to the deep nozzle 83,85,96,97.
And is discharged into the ground from the tip of the deep layer nozzles 83, 85, 96, 97 by a predetermined amount, and from the shallow layer distribution valve 27 through the tube, joint and tube.
3 ', 85', 96 ', 97' are pumped, and shallow layer nozzles 83 ', 8
A predetermined amount is discharged from the tip of 5 ', 96', 97 'into the ground.

Also, the power from the PTO shaft 16 is transmitted to the coupler 33,
The speed is changed by the speed change unit 30 and transmitted to the counter shaft 37. Power is transmitted from the sprocket 41 of the counter shaft 37 to the sprocket 43 of the first shaft 42 via the chain 44, and from the sprocket 49 of the first shaft 42 to the sprocket 52 of the distribution valves 25 and 27 via the chain 53. Power is transmitted to.

Further, power is transmitted from the sprocket 55 of the first shaft 42 to the sprocket 63 of the upper crankshaft 65 and the sprocket 67 of the lower crankshaft 69 via the chain 70, and the sprockets 63 and 67 have the same number of teeth. Because
The upper crankshaft 65 and the lower crankshaft 69 have the same rotation speed. The rotation of the upper crankshaft 65 is transmitted to the upper crankarms 77, 77 'to rotate the nozzle holders 81, 81, and the rotation of the lower crankshaft 69 rotates the lower crankarms.
Since the nozzle holders 92, 92 are rotated by being transmitted to the nozzles 86, 86 ′, the nozzles 83, 83 ′, 85, 85 ′ rotate while maintaining a substantially vertical state, and the nozzles 83, 83 ′, 85 The tip of the 85 'is driven into the ground.

Therefore, the power is transmitted from the first shaft 42 to the distribution valves 25 and 27 through the chain 53, and the first shaft 4
Since the power is transmitted from 2 to the crankshaft 65, 69 via the chain 70, the fertilizer outflow timing of the distribution valves 25, 27 and the tip parts of the nozzles 83, 83 ', 85, 85' are driven into the ground. It is synchronized with the timing.

Further, power is transmitted from the sprocket 45 of the first shaft 42 to the sprocket 47 of the second shaft 46 via the chain 48, and from the sprocket 99 of the second shaft 46 via the seeding device drive unit 103 and the chain 110. The power is transmitted to the seeding device 119. Therefore, the distribution valves 25 and 27, the driving means 98, and the seeding devices 119 and 119, to which power is transmitted from the first shaft 42, operate at the same timing.
As shown in FIG. 0, FIG. 11 and FIG. 12, it is possible to match the timing of fertilization and sowing.

Further, the switching lever 19a of each switching valve 19 allows the distribution ratio of the deep-layer nozzles 83, 85, 96, 97 and the shallow-layer nozzles 83 ', 85', 96 ', 97' to be distributed to the six consecutive fertilizer application pumps 10. You can choose from 5 combinations (1: 5,2: 4,3: 3,4: 2,5: 1) depending on the outlet, so the amount of fertilizer in the deep layer and the fertilizer in the shallow layer can be selected accordingly. You can easily change the quantity. Therefore, according to the growth of seedlings and the type of fertilizer, the seedlings should absorb a small amount of fertilizer in the shallow layer at the beginning of the growth of seedlings, and should absorb a large amount of fertilizer in the deep layer when the seedlings grow further. In addition, since the optimum amount of fertilizer can be absorbed according to the growth of seedlings, the growth of seedlings can be promoted.

Further, since the switching lever 19a of each switching valve 19 can easily change the fertilizer application amount in the deep layer and the fertilizer application amount in the shallow layer in five ways, it is possible to quickly apply fertilizer to various varieties.

In addition, each of the six outlets of the indicator 17 has a switching valve.
Since 19 is connected / communicated, when the switching valve 19 and the hose are clogged, the switch 17a of the indicator 17 connected / communicating with the switching valve 19 is activated to monitor the driver's seat 2.
Since it can be confirmed with 0, clogging can be easily detected.

Next, a partially modified embodiment will be described with reference to FIG.

In the embodiment shown in FIG. 16, a sub tank of the fertilizer application pump 10
The discharge port 19f to 11 is added, and the valve 19b
It is changed to b ′, and one of the discharge port 19d to the deep-layer distribution valve 25, the discharge port 19e to the shallow-layer distribution valve 27, and the discharge port 19f to the sub-tank 11 is turned by rotating the switching lever 19a. It is configured to communicate with one discharge port. This allows
The fertilizer pumped from the fertilizer application pump 10 can be sent to the sub-tank 11 of the fertilizer application pump 10, and the distribution ratio of the fertilizer application amount for the deep layer and that for the shallow layer can be adjusted more finely.

Next, a partially modified embodiment will be described with reference to FIG.

In the embodiment shown in FIG. 17, the fertilizer pump 10 shown in FIG.
Instead of the indicator 17 and fertilizer pump 170,171 and indicator 172,173 are provided, along with it,
6 switching valves 19, deep layer connector 21, shallow layer connector 2
2 and hoses 23 and 26 have been added. Fertilizer pump 170
Of the 6 stations, 4 stations communicate with the deep-layer distribution valve 25 via the switching valve 19, the deep-layer connector 21 and the hose 23, and 2 stations connect the switching valve 19, the shallow-layer connector 22 and the hose 26. Through the shallow layer distribution valve 27. Four of the six fertilizer application pumps 171 are provided with a switching valve 19, a deep-layer connector 21, and a hose 23.
Through the deep distribution valve 25, and two stations are switching valves 1
9. The shallow layer distribution valve 27 communicates with the shallow layer connector 22 and the hose 26. As a result, the distribution ratio of the fertilizer application amount for the deep layer and the shallow layer can be selected from 11 combinations according to the total 12 outlets of the fertilizing pumps 170 and 171. It is possible to adjust the distribution rate of the fertilizer application amount.

In the embodiment described above, the seeding device 11 is used as the ground working unit 32.
Although 9 is used, the present invention is not limited to this, and it goes without saying that a transplanting device for transplanting seedlings such as a rice transplanting device may be used.

Furthermore, although the above-mentioned embodiment uses the point-feeding type fertilizer applicator,
Of course, a fertilizer having a striped shape may be used instead of this.

[Brief description of drawings]

FIG. 1 is a view showing an indicator and a switching valve portion according to the present invention. (A) is a side sectional view in a state of communicating with a deep layer distributing valve, (b) is a side sectional view in a state of communicating with a shallow layer distributing valve,
(C) is a side sectional view of a cleaning state, FIG. 2 is a schematic perspective view showing a switching valve and a connector portion according to the present invention, FIG. 3 is a side view showing a traveling machine body of a passenger rice transplanter to which the present invention is applied, FIG. 4 is a side view showing a fertilizer application machine to which the present invention is applied,
FIG. 6 is a plan view thereof, FIG. 6 is a transmission plan view showing transmission from a PTO shaft, FIG. 7 is a detailed plan sectional view showing a chain case and a crank portion, and FIG. 8 is a view showing a nozzle holder portion, a) is a side view of the nozzle holder side, (b) is a side view of the nut side, FIG. 9 is a detailed rear view showing the crank portion,
10 is a plan view showing the positional relationship between fertilization and sowing, FIG. 11 is a sectional view taken along the line AA in FIG. 10, FIG. 12 is a sectional view taken along the line BB in FIG. 10, and FIG. 13 is a fertilizer. Fertilizer flow diagram showing the flow of, Figure 14 is a schematic plan view showing the distribution valve and pipe portion, Figure 15 is a diagram showing the pipe and joint portion,
(A) is a partial front sectional view thereof, (b) is a partial side sectional view thereof, FIG. 16 is a diagram showing an indicator and a switching valve portion similar to FIG. 1 showing another embodiment, and FIG. 17 is another. FIG. 14 is a fertilizer flow chart similar to FIG. 13 showing the example of FIG. 7 …… Fertilizer tank, 10 …… Pump unit (fertilizer pump), 10a …… Pump unit discharge part (fertilizer pump outlet), 15 …… Fertilizer (fertilizer working machine), 19 …… Switching valve, 25
…… Deep layer distribution valve, 27 …… Shallow layer distribution valve, 83 …… Deep layer nozzle, 83 ′ …… Shallow layer nozzle, 85 …… Deep layer nozzle,
85 '... Nozzle for shallow layer.

Claims (1)

(57) [Scope of utility model registration request] 1. A fertilizer applicator comprising a nozzle group for deep layers and a nozzle group for shallow layers, injecting fertilizer supplied to these nozzles into the ground from the tip of the nozzles, having a large number of discharge parts, A pump unit that discharges fertilizer from the fertilizer tank from each of these discharge units, a distribution valve for the deep layer that distributes the fertilizer to each nozzle for the deep layer, and a shallow unit that distributes the fertilizer to each nozzle for the shallow layer. And a switching valve that communicates with each discharge part of the pump unit and switches fertilizer from each discharge part so as to communicate with the deep-layer distribution valve or the shallow-layer distribution valve. Fertilizer applicator.