JPS6248316A - Apparatus for controlling fertilizing amount of pasty fertilizer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a paste fertilizer application control device that can ensure a stable application amount of paste fertilizer even if its viscosity changes.

(b) Prior Art Fertilizers are already known that apply fertilizer by forcing paste-like fertilizer in a fertilizer tank into a fertilizer application pipe using a pump.

(c) Problems to be Solved by the Invention In general, the fluidity of paste fertilizer decreases as the viscosity increases, but the known fertilizer applicator applies the fertilizer by force-feeding it under constant conditions with a pump regardless of the viscosity. Therefore, when the viscosity increases, the pump discharge pressure increases, the discharge amount of paste fertilizer decreases, and the amount of fertilizer applied decreases.

(D) Means for Solving the Problems The present invention provides a fertilizer applicator that applies paste fertilizer in a fertilizer tank by force-feeding it to a fertilizer application pipe using a pump. A heating device is attached, and when the viscosity sensor detects a high viscosity state, the heating device is configured to heat the paste fertilizer, and when the viscosity of the paste fertilizer becomes high, by heating to reduce the viscosity, The above-mentioned problem was solved by making the amount of fertilizer applied almost constant regardless of the viscosity.

(e) The action pump sucks in and pressure-feeds the paste fertilizer in the fertilizer tank and applies it to the field from the fertilization pipe.The viscosity sensor detects the viscosity of the paste fertilizer, and if it detects that it has a high viscosity, it heats up. As the device heats the paste fertilizer, its viscosity decreases, which reduces the pump's discharge pressure and increases the discharge amount to its normal state.When the viscosity returns to its normal state, the heating device generates heat. or the amount of heat generated decreases.

(F) Embodiment An embodiment of the present invention and its related configuration will be described with reference to the drawings.

The fertilizer application device is attached to the rear of a four-wheeled vehicle l so that it can be raised and lowered by an upper link 2 and lower links 3, 3 that are parallel to each other.A horizontal frame 6 is attached to the top of a vertical frame 5, and a number of The set of fertilizing body 7... is composed of the supporting arm 8, the link 10 parallel to Φ, the semicircular plate 11 with a hole fixed to the upper link 10, and the pin that fixes it, and the posture shown by the solid line in Fig. 1 and the chain line. The fertilizing body 7 is supported so as to be raised and lowered in the position shown in the support frame 1.
Ruler shaft 13 supported on 2. It is composed of a sliding plate 14 and a fertilizing pipe 15.

In addition, several pumps 16 corresponding to the fertilizing bodies 7 are mounted on the back side of the horizontal frame 6, and these pumps 16 can be attached to the PTO shaft at the rear of the four-wheeled vehicle 1. The pump 18 and
The inlet of the fertilizer tank 20. is located on both sides of the cockpit 18.
20 through a suction hose 21. The discharge port is connected to the fertilization pipe 1511 through a pressure feed hose 2211.

FIG. 5 shows an example in which the preliminary horizontal frame 6a is connected to the end of the horizontal frame 6 to increase the number of fertilization lines by one or more.

The fertilizer application amount control device is composed of a viscosity sensor 23 and a heating device 25. An example of the viscosity sensor 23 will be explained with reference to FIG. 6. The main body 26 is made of a vertical cylinder;
The inlet 27 provided in the middle part is connected to the discharge port of the pump 16 via an O-ring, the discharge port 28 in the lower part is connected to the pressure hose 22, and the upper part has a vertical hole 29 in the center. A cap 31t having a protrusion 30 at the lower end is screwed onto the cap 31, and a transparent pipe 32 is fitted and fixed in the vertical hole 28 of the cap 31, and the protrusion 30 is fitted with a soft pipe 31t having a plug 33 at the lower end. The tube 34 is fitted tightly, and the tube 34 and pipe 32 are filled with colored water 35.

Further, a cylindrical mounting cover 38 having a light-shielding property is attached to the upper part of the cap 31, and this mounting cover 36
Inside, two pairs of upper and lower light emitting elements 37a, 37b and light receiving elements 38a, 38b are mounted so as to face each other.

In addition to the above-mentioned examples, the viscosity sensor 23 may include other pressure sensors,
Alternatively, it can be replaced with a temperature sensor or the like, and when a temperature sensor is employed, it can be installed easily if the temperature sensor is installed in the fertilizer tank 20.

The heating device 40 can be constructed by covering the suction hose 21 with a layer of electric heaters 41 as shown in FIGS. 1 and 7, or by installing a heater at the bottom of the fertilizer tank 20 as shown in FIG. 42.

In the above-mentioned device, the pump 16 is attached to the fertilizer tank 20.
Fertilizer is applied to the mud from the fertilization pipe 15 by inhaling the paste-like fertilizer inside and discharging it to the pressure-feeding hose 22. The lever 10a extending from the lever 10a is pushed down and raised as shown by the chain line in FIG. 1, and the semicircular plate 11 is fixed with a bottle.

When the viscosity of the paste fertilizer increases due to low temperature, high concentration, or other factors, the fluidity decreases, and the discharge pressure of the pump 16 increases, which causes the tube 34 to increase. Since it is compressed, the water level of the two-colored water 35 rises.

At that time, when the water level of the colored water 35 rises from A to B in FIG.
The light-receiving element 38a facing the light-receiving element 38a stops receiving light and enters the detection state, and similarly the colored water 35
When the temperature rises to this level, the light receiving element 38b also enters the detection state.

The detection signals of the light receiving elements 38a and 38b are input to a control section 43 shown in FIG.
As shown in FIG. 0, when the light receiving element 38a is not emitting a detection signal, that is, when the discharge pressure is abnormally low, the buzzer 44 is activated to issue an alarm indicating pump failure, and the pump is repaired.

Further, if the light receiving element 38a is in the detection state and the light receiving element 38b is in the non-detection state, that is, if the viscosity of the paste fertilizer is normal and the water level of the colored water 35, which is proportional to the discharge pressure of the pump 16, is at the appropriate position, it will remain as it is. However, the upper light receiving element 38
When b also enters the detection state, the heater 41 or 42 is energized to heat the paste fertilizer, which lowers its viscosity and the water level of the colored water 35 falls.When the light receiving element 38b enters the non-detection state, the electricity is turned off. will be stopped.

At this time, if the temperature is low, it is best to lower the heating temperature and heat constantly.

In the above embodiment, a photoelectric sensor was used as the viscosity sensor, but the same results can be obtained even if other liquid level sensors are used.

(G) Effects of the Invention As described above, the present invention provides a fertilizer applicator that applies fertilizer by pumping the paste fertilizer in the fertilizer tank 2o to the fertilizer application pipe 15 with the pump 16, and provides a fertilizer applicator that uses the pump 16 to forcefully transfer the paste fertilizer in the fertilizer tank 2o to the fertilizer application pipe 15. A viscosity sensor 23 and a heating device 25 are attached to the viscosity sensor 23 and the heating device 25 is configured to heat the paste fertilizer when the viscosity sensor 23 detects a high viscosity state. detects this, and the heating device 40 heats the paste fertilizer based on the detection signal to lower the viscosity, making it possible to apply a predetermined amount of fertilizer regardless of the level of viscosity, thereby preventing a decrease in yield due to lack of fertilizer. can do.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of the fertilization device, Fig. 2 is a side view of a traveling vehicle equipped with the fertilization device, and Fig. 3 is an exploded perspective view of the pump mounting part. 4(a) is a perspective view of the pump drive mechanism, FIG. 4(b) is a plan view of the same as above, and FIG. 5 is a perspective view showing another example of the horizontal frame.
) is a longitudinal cross-sectional view of the viscosity sensor, (b) is a cross-sectional view of the sensing part, FIG. 7 is a cross-sectional view of the heating device, FIG. 8 is a cross-sectional view of an example of the same function, and FIG. 9 is a control circuit diagram. FIG. 10 is a control chart. 7. Fertilizer body, 15. Fertilizer pipe, 16. Pump, 23
...Viscosity sensor, 25...Heating device (Fig. 1)

Claims (1)

[Claims] In a fertilizer application machine configured to apply fertilizer by pumping paste-like fertilizer in a fertilizer tank 20 to a fertilizer application pipe 15 using a pump 16,
A paste characterized in that a viscosity sensor 23 and a heating device 25 are attached to the fertilizer tank 20 or the liquid feeding path, so that when the viscosity sensor 23 detects a high viscosity state, the heating device 25 heats the paste-like fertilizer. Fertilizer application amount control device.