JP2017077210A - Liquid fertilizer feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid fertilizer feeder for feeding a liquid fertilizer to a spout.SOLUTION: A liquid fertilizer feeder includes: a liquid fertilizer storage tank for storing a liquid fertilizer; water level holding means for holding a level of the liquid fertilizer in the liquid storage tank; and liquid fertilizer lead-out means for leading out the liquid fertilizer from the liquid fertilizer storage tank. The water level holding means includes a liquid fertilizer introduction nozzle for introducing the liquid fertilizer, and a float valve body for blocking a valve port of the liquid fertilizer introduction nozzle by the rising of the level of the liquid in the liquid fertilizer storage tank. The liquid fertilizer lead-out means includes a flexible liquid fertilizer lead-out pipe for leading out the liquid fertilizer from the liquid fertilizer storage tank, and a lead-out amount setting part for setting a liquid fertilizer lead-out amount by adjusting the position of the tip of the liquid fertilizer lead-out pipe. The lead-out amount setting part includes a lead-out amount display part and a guide pipe, the lead-out amount display part displaying a distance from the level of the liquid in the liquid fertilizer storage tank downward, and the guide pipe being formed of a transparent material with an inner diameter that allows the tip of the liquid fertilizer lead-out pipe to be inserted.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a liquid fertilizer supply device, and more particularly to a liquid fertilizer supply device for supplying liquid fertilizer to a water mouth when performing pouring fertilization to a farm field.

  As a fertilization method for performing topdressing work on a field where paddy rice is cultivated, a pouring fertilization method is known in which fertilizer is fertilized on a water flow that flows into the field from the water inlet with a low flooding depth. As a fertilizer bag for pouring fertilization used for pouring fertilization, a marking for cutting is provided at a specific position of the fertilizer bag, and cutting is performed according to the conditions of the field where the pouring fertilization is applied, the conditions of the water mouth, and the properties of the fertilizer. There has been proposed a method for opening a display portion for inclusion with a predetermined size (see, for example, Patent Document 1).

JP 2014-143968 A

  However, when the opening formed in the fertilizer bag is formed large, more fertilizer than a predetermined amount is eluted in a short time, and fertilization to the entire field may not be performed sufficiently. In addition, the amount of fertilizer elution may vary depending on how the fertilizer bag is placed in the water mouth, making it difficult to apply fertilizer evenly throughout the field. There was also a problem that the amount of fertilizer elution varied with the progress of fertilization work.

  Then, this invention aims at providing the liquid fertilizer supply apparatus which can supply the predetermined amount of the liquid fertilizer which dissolved various fertilizer components in water to a water mouth reliably.

  In order to achieve the above object, the liquid fertilizer supply device of the present invention is a liquid fertilizer supply device for supplying liquid fertilizer to a water mouth when performing pouring fertilization to a farm field, wherein the liquid fertilizer in which fertilizer components are dissolved is used. In order to derive liquid fertilizer at a predetermined flow rate from the liquid fertilizer storage tank, a water surface holding means for holding the liquid fertilizer storage tank in the liquid fertilizer storage tank, a water surface holding means for holding the water surface of the liquid fertilizer in the liquid fertilizer storage tank at a constant height Liquid fertilizer derivation means, and the water surface holding means rises as the liquid fertilizer introduction nozzle introduces the liquid fertilizer into the liquid fertilizer storage tank from the outside of the liquid fertilizer storage tank and the water level in the liquid fertilizer storage tank rises A float valve body that closes a valve port provided at a lower end of the liquid manure introduction nozzle, and the liquid fertilizer deriving means includes a liquid manure deriving tube made of a flexible material for deriving the liquid manure from the liquid manure storage tank; Deriving the liquid fertilizer A derivation amount setting unit for setting the derivation amount of the liquid fertilizer by adjusting the vertical position of the tip of the liquid, and the derivation amount setting unit includes a derivation amount display unit and a guide provided on the side surface of the liquid manure storage tank And a guide pipe has an inner diameter into which the tip of the liquid manure outlet pipe can be inserted. The guide pipe has a distance from the water surface downward relative to the water surface in the liquid manure storage tank. The liquid fertilizer is made to flow down from the tip of the liquid manure outlet pipe into the guide pipe by inserting the tip of the liquid manure outlet pipe into the guide pipe in accordance with the display of the derivation amount display section. It is characterized by.

  Furthermore, the liquid fertilizer supply device of the present invention is characterized in that a water surface display unit is provided adjacent to the derivation amount display unit or the guide pipe so that the water surface in the liquid manure storage tank is visible from the outside. Yes.

  According to the liquid fertilizer supply device of the present invention, by inserting the tip of the liquid fertilizer outlet pipe into the guide pipe in accordance with the display of the derived amount display unit, a certain amount of liquid fertilizer is guided from the tip of the liquid fertilizer outlet pipe to the guide pipe. A certain percentage of liquid fertilizer is reliably supplied into the water flowing into the field from the water mouth by placing the lower end of the guide pipe directly or indirectly at an appropriate position of the water mouth. can do. In addition, the amount of liquid fertilizer supplied can be adjusted by moving the position of the tip of the liquid fertilizer outlet tube up and down, so the amount of liquid fertilizer according to the type and concentration of liquid fertilizer and the condition of the water flowing into the field from the water inlet Can be supplied to.

It is a front view which shows one example of a liquid fertilizer supply apparatus of this invention. It is sectional drawing which similarly shows the internal structure of a liquid fertilizer supply apparatus. It is a figure which shows an example of the relationship between the difference (water level difference) between the water surface in a liquid manure storage tank, and the front-end | tip of a liquid fertilizer extraction pipe | tube, and the flow volume of the liquid fertilizer to flow down. It is a front view which shows the other example of a liquid fertilizer supply apparatus of this invention.

  FIG. 1 thru | or FIG. 3 has shown the one example of the liquid fertilizer supply apparatus of this invention. This liquid fertilizer supply device includes a bottomed cylindrical liquid fertilizer storage tank 11, a water surface holding means 12 for holding the water surface of the liquid fertilizer in the liquid fertilizer storage tank 11 at a constant height, and the liquid fertilizer storage tank 11. And a liquid fertilizer deriving means 13 for deriving a certain amount of liquid fertilizer.

  The water surface holding means 12 is a float valve body that opens and closes a liquid manure introduction nozzle 15 provided downward in the center of a lid body 14 that covers the upper opening of the liquid manure storage tank 11 and a valve port 15 a provided at the lower end of the liquid manure introduction nozzle 15. 16.

  The liquid manure introduction nozzle 15 is connected with a liquid manure introduction pipe 18 serving as a liquid manure introduction path connected to a large-capacity liquid fertilizer supply tank 17 installed at an appropriate position outside the liquid manure storage tank 11. The liquid fertilizer in the liquid fertilizer supply tank 17 installed in is passed through the liquid fertilizer introduction pipe 18 by natural flow and flows into the liquid fertilizer storage tank 11 from the liquid fertilizer introduction nozzle 15.

  The float valve body 16 moves up and down as the water surface in the liquid manure storage tank 11 moves up and down. In this embodiment, the float valve body 16 floats a PET bottle having an outer diameter slightly smaller than the inner diameter of the liquid manure storage tank 11. A valve body 16a that can be used as the valve body 16 and can close the valve port 15a is provided on the upper surface of the cap.

  When liquid fertilizer flows into the liquid fertilizer storage tank 11 from the liquid fertilizer introduction nozzle 15 and the water surface in the liquid fertilizer storage tank 11 rises, and the float valve body 16 rises as the water level rises, the water surface is set in advance. When reaching, the valve body 16a closes the valve port 15a and stops the inflow of the liquid fertilizer from the liquid manure introduction nozzle 15. When the liquid fertilizer in the liquid fertilizer storage tank 11 is led out by the liquid fertilizer deriving means 13 and the water surface in the liquid fertilizer storage tank 11 is lowered, the float valve body 16 is lowered as the water surface is lowered, and the valve body portion 16a is operated as a valve. The liquid fertilizer flows from the liquid fertilizer introduction nozzle 15 into the liquid fertilizer storage tank 11 away from the mouth 15a. Therefore, the valve surface 15a is opened and closed by the vertical movement of the float valve body 16 accompanying the vertical movement of the water surface in the liquid manure storage tank 11, so that the water surface in the liquid manure storage tank 11 is kept constant.

  The liquid fertilizer lead-out means 13 adjusts the liquid fertilizer lead-out pipe 19 made of a flexible material connected to the bottom of the liquid fertilizer storage tank 11 and the vertical position of the tip of the liquid manure lead-out pipe 19 to adjust the amount of liquid fertilizer lead-out. A derivation amount setting unit 20 for setting. The derived amount setting unit 20 includes a water surface display unit 21, a derived amount display unit 22, and a guide pipe 23 provided on the side surface of the liquid manure storage tank 11 so as to be adjacent to each other.

  The said water surface display part 21 made visible the water surface in the liquid manure storage tank 11 from the outside, and while forming the vertical slit 11a in the surrounding wall of the liquid manure storage tank 11, inside or outside of this slit 11a In addition, a film or sheet 21a made of a transparent material is attached. The derived amount display unit 22 displays a distance from the water surface to the lower side with reference to the water surface in the liquid manure storage tank displayed on the water surface display unit 21. The guide pipe 23 is made of a transparent material pipe having an inner diameter into which the tip of the liquid manure outlet pipe 19 can be inserted, for example, an inner diameter 2 to 6 mm larger than the outer diameter of the liquid manure outlet pipe 19. The derived amount display unit 22 and the guide pipe 23 are held on the outer peripheral surface of the liquid manure storage tank 11 by a pair of upper and lower fixed bands 24, 24 attached to the outer periphery of the liquid manure storage tank 11.

  Further, a handle 14a is attached to the upper part of the lid body 14, and a liquid fertilizer supply pipe for supplying liquid fertilizer flowing down in the guide pipe 23 to a predetermined position of the water mouth (see FIG. (Not shown) are provided as required. Further, a vent hole (not shown) that communicates the inside and outside of the tank is provided in the upper part of the liquid manure storage tank 11.

  When performing fertilization by pouring into the field using the liquid fertilizer supply device formed as described above, liquid fertilizer having a predetermined concentration of liquid fertilizer or solid fertilizer dissolved in water at a predetermined concentration is put into the liquid fertilizer supply tank 17. At the same time, the liquid fertilizer supply tank 17 and the liquid fertilizer introduction nozzle 15 are connected by a liquid fertilizer introduction pipe 18. Further, the distal end portion of the liquid manure outlet pipe 19 drawn out of the liquid fertilizer storage tank 11 is inserted into the guide pipe 23 from the upper opening of the guide pipe 23, and the distal end is positioned in accordance with the display of the derived amount display portion 22.

  At this time, the liquid manure outlet tube 19 made of a flexible material is bent in the guide pipe 23 by its own winding, so that the tip of the liquid manure outlet tube 19 is fixed to the inner periphery of the guide pipe 23. Therefore, the liquid fertilizer does not move up and down due to the pressure of the liquid fertilizer flowing down from the tip and the weight of the liquid fertilizer outlet pipe 19 itself. Moreover, the tip position of the liquid manure outlet pipe 19 can be easily and reliably visually recognized by forming the liquid manure outlet pipe 19 with an opaque material or coloring the tip of the liquid manure outlet pipe 19 formed of a transparent material. .

  The insertion amount of the liquid manure outlet pipe 19 into the guide pipe 23 is set according to the amount of liquid fertilizer supplied to the water port. The relationship between the difference between the water level in the liquid fertilizer storage tank 11 and the tip of the liquid fertilizer outlet pipe 19 (water level difference cm) and the flow rate of liquid fertilizer flowing down (liter / hour) can be easily obtained by experiments. For example, FIG. 3 shows an example of an experimental result when a transparent tube having an inner diameter of 5 mm and a length of 1 m is used as the liquid manure outlet pipe 19. The tip of the liquid manure outlet pipe 19 is 2 cm from the water surface in the liquid manure storage tank 11. By positioning it downward, the flow rate of the liquid fertilizer becomes 1 liter per hour, and by positioning it 4 cm below, the flow rate becomes approximately 2.8 liters per hour, and it can be confirmed that it changes in a substantially linear shape. Therefore, the liquid fertilizer can be supplied at an optimum flow rate according to the state of the field, the amount of water at the water mouth, and the like by obtaining the relationship between them in advance according to the type and concentration of the liquid fertilizer. Therefore, the flow rate of the liquid fertilizer obtained by such an experiment can be displayed on the derived amount display unit 22.

  However, if the length of the liquid fertilizer outlet pipe 19 is different between the experiment and the field, the flow rate changes due to the resistance to water flow. Therefore, the length of the liquid manure outlet pipe 19 is set to a predetermined length, for example, It is preferably set to 1 m, and the excess liquid manure outlet pipe 19 is preferably spirally accommodated in the liquid manure storage tank 11 as shown in FIG.

  In addition, the liquid fertilizer can be effectively put into the irrigation water by providing an appropriate liquid fertilizer mixer and liquid fertilizer disperser at the lower end of the guide pipe 23 in accordance with the conditions of the field and water mouth, the flow rate of water to be introduced into the field, etc. It is possible to distribute liquid fertilizer evenly throughout the field. Furthermore, when the flow rate of the irrigation water fluctuates greatly, the flow rate of the liquid fertilizer flowing down from the lower end portion of the guide pipe 23 is adjusted by moving the lower end portion of the guide pipe 23 up and down according to the flow rate of the irrigation water. An appropriate flow rate adjusting mechanism can also be provided.

  FIG. 4 shows another embodiment of the liquid fertilizer supply device of the present invention. In addition, in the following description, the same code | symbol is attached | subjected to the component same as the component of the liquid fertilizer supply apparatus shown to the said example, and detailed description is abbreviate | omitted.

  The liquid fertilizer supply device shown in FIG. 4 is wound around the lower outer periphery of the liquid manure storage tank 11 with respect to the bottomed cylindrical liquid fertilizer storage tank 11 having the same configuration as described above. The water surface display unit 21 penetrates the lower part of the liquid fertilizer storage tank 11 and connects the lower end of the transparent tube 21b, rises in the vertical direction, and arranges the upper end below the lid body 14.

  As described above, the liquid fertilizer supply device of the present invention can be manufactured by a simple operation such as cutting, drilling, and bonding using commercially available products such as general piping materials. The amount can be easily set. Moreover, it becomes unnecessary to form the water surface display part 21 by forming the liquid manure storage tank 11 with a transparent material, and knowing the water level in the liquid manure storage tank 11 from the positional relationship between the valve body part 16a and the valve port 15a. Even when it is possible, the water surface display unit 21 can be omitted.

  Furthermore, when supplying a large amount of liquid fertilizer, the height of the liquid fertilizer storage tank 11 may be increased or the inner diameters of the liquid fertilizer outlet pipe 19 and the guide pipe 23 may be increased. The liquid fertilizer supply device can be easily manufactured. Further, the valve port 15a and the valve body portion 16a may be made of a sealable material such as soft rubber for at least one of the contact portions. Furthermore, by providing a display similar to that of the derived amount display unit on the outer surface of the guide pipe 23, the derived amount display unit 22 can also be used as the guide pipe 23. Moreover, the shape of the float valve body 16 is arbitrary, and it is also possible to adopt a structure like a ball tap.

  The type of liquid fertilizer is not particularly limited, and various solid fertilizers may be dissolved in water in advance so that the concentration becomes appropriate according to conditions such as water supply time to the field. In the case of solid fertilizer that is difficult to do, it may be dissolved the day before or a few days ago.

DESCRIPTION OF SYMBOLS 11 ... Liquid manure storage tank, 11a ... Slit, 12 ... Water surface holding means, 13 ... Liquid fertilizer derivation means, 14 ... Lid body, 14a ... Handle, 15 ... Liquid manure introduction nozzle, 15a ... Valve port, 16 ... Float valve body, 16a DESCRIPTION OF SYMBOLS ... Valve body part, 17 ... Liquid fertilizer supply tank, 18 ... Liquid manure introduction pipe, 19 ... Liquid manure extraction pipe, 20 ... Derived amount setting part, 21 ... Water surface display part, 21a ... Sheet, 21b ... Transparent tube, 22 ... Derived amount Display unit, 23 ... guide pipe, 24 ... fixed band

Claims (2)

  A liquid fertilizer supply device for supplying liquid fertilizer for pouring fertilization to a farm into a water mouth, a liquid fertilizer storage tank for storing liquid fertilizer in which fertilizer components are dissolved, and liquid fertilizer in the liquid fertilizer storage tank Water level holding means for holding the water level at a certain height, and liquid fertilizer derivation means for deriving liquid fertilizer from the liquid fertilizer storage tank at a preset flow rate, and the water level holding means comprises liquid fertilizer Liquid fertilizer introduction nozzle for introducing liquid fertilizer into the liquid fertilizer storage tank from the outside of the storage tank, and a valve opening provided at the lower end of the liquid fertilizer introduction nozzle when the water level rises in the liquid fertilizer storage tank The liquid fertilizer lead-out means includes a liquid manure lead-out pipe made of a flexible material for leading the liquid fertilizer from the liquid fertilizer storage tank, and a vertical position of the tip of the liquid manure lead-out pipe Liquid fertilizer A derivation amount setting unit configured to set a derivation amount, and the derivation amount setting unit includes a derivation amount display unit provided on a side surface of the liquid manure storage tank and a guide pipe, and the derivation amount display unit includes the liquid manure storage unit. Displaying the distance from the water surface downward with reference to the water surface in the tank, the guide pipe is formed of a transparent material having an inner diameter into which the tip of the liquid manure outlet pipe can be inserted, and the tip of the liquid manure outlet pipe is A liquid fertilizer supply device that causes liquid fertilizer to flow down into the guide pipe from the tip of the liquid manure discharge pipe by inserting the liquid fertilizer into the guide pipe in accordance with the display of the derived amount display section.   The liquid fertilizer supply device according to claim 1, wherein a water surface display unit is provided adjacent to the derived amount display unit or the guide pipe so that the water surface in the liquid manure storage tank is visible from the outside.

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