JPS6212447Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is a rotating device in which an appropriate number of orifices of different diameters are bored along the circumference in a housing placed on a chemical tank or set on the discharge side of a chemical tank. This invention relates to a chemical liquid discharge rate adjusting device which can extremely easily adjust the chemical liquid discharge rate by rotatably supporting a disk and setting and holding it at a desired position, and which is suitable for greenhouse cultivation with a simple structure. .

Conventionally, when spraying chemical solutions in greenhouse cultivation, the amount of chemical solution discharged was adjusted by means such as placing a needle valve facing the chemical solution discharge port so that it could move forward and backward, or changing the opening area of the discharge port as appropriate with a member such as a blocking plate. However, due to the adhesion of particulates and foreign matter to the discharge port, the discharge of the chemical solution becomes impossible or becomes extremely insufficient, and a pre-specified discharge amount is always discharged. It was extremely difficult to do so, and as a result, there were cases where the amount of spraying was too high or too low, leading to a situation where there was a risk of chemical damage. In addition, a means of discharging chemical liquid using an orifice was also adopted, but each time the discharge amount was changed, the orifice with a different diameter had to be replaced. However, since it is necessary to perform the same operations from time to time, it has the disadvantage that it cannot necessarily be said to be easy in terms of maintenance and management. Therefore, in order to correct the above-mentioned drawbacks, this idea was developed by placing a rotating disk with an appropriate number of orifices of different diameters along the circumference on the chemical tank or setting it on the discharge side of the chemical tank. By rotatably supporting the rotary plate in a casing, and setting and holding this rotary disk at a desired position, it is possible to easily and accurately supply a predetermined amount of chemical liquid through the chemical liquid flow path that communicates with the chemical liquid tank. It is an object of the present invention to provide a control device for adjusting the amount of chemical liquid discharge suitable for greenhouse cultivation.

An embodiment of this invention will be described below with reference to the drawings in the case where the casing is placed on a chemical liquid tank.A stirring motor is installed in the center of the lid 1 that covers and fits the upper end of the cylindrical chemical liquid tank T. M is placed and fixed, and a stirring blade 3 is attached to the lower end of the stirring shaft 2 connected to and hanging down from the rotating shaft (not shown) of the stirring motor M, so as to make the concentration of the chemical solution d in the chemical solution tank T uniform. Furthermore, the tip of an air supply pipe 4 connected to a compressor (not shown) projects into the chemical liquid tank T, so that the chemical liquid d can flow into the supply pipe 5 by injection of compressed air. In addition, a female thread is carved on the lower side of the casing V fixed to one side of the lid 1 (on the left side in FIG. 1), and a male screw a is carved on the upper outer peripheral edge of the lower bushing 6 that penetrates the lid 1. The upper end of the supply pipe 5 is tightly fitted and fitted below a through hole c which can be penetrated upward and downward through the center of the lower bushing 6. A male screw b carved on the lower outer periphery of the upper bushing 7 is screwed into a female screw carved above the cavity h that communicates with the hole c, and a male screw b carved on the lower outer periphery of the upper bushing 7 is screwed through the center of the upper bushing 7 in an upward and downward direction. A lower part of a discharge pipe 8 having a nozzle (not shown) attached to its tip is screwed into the upper part of the through hole e. At approximately the center of the cavity h, an elongated guide hole g communicating with the cavity h is horizontally formed on the periphery of the cavity h, and a rotary disc 9 with a knurled r rotates within the guide hole g. Along the periphery, place an appropriate number of pieces (here 8
orifices i are bored at equal or predetermined intervals, and the diameters of these orifices i are made different, and the center of the rotary disk 9 is rotated by a pin p inserted vertically into the housing V. In addition to being movably fitted, there is a pointer 1 on one side of the housing V (on the right side in the drawing).
0 protrudes, and a number directly indicating the diameter of the orifice i, for example, 0.4, 0.5,
Display the number Z such as 1.0 or 1, 2, 3, etc.
By rotating the rotary plate 9, it is possible to easily select the diameter of the orifice i facing into the space h at a position symmetrical to this number Z. In order to hold the rotary plate 9 in the upper and lower positions, the upper and lower collars 11 and 12, each having a U-shaped cross section, are rotatably held between the upper and lower collars 11 and 12 via "O" rings k and n. Colors 11, 12 and upper
Coil springs 13 and 14 are stretched between the lower bushes 7 and 6, respectively, and these coil springs 13 and 14 constantly push and attach the collars 11 and 12 toward the rotary plate 9. It is in force. In addition, a pair of cleaning holes j and j are formed in the housing V, and the first
A cleaning needle 15 as shown in the figure can be inserted into either of the cleaning holes j as necessary to remove dust, debris, etc. adhering to the inner peripheral edge of the orifice i. The outer circumferential edge of the rotary disk 9 is made to protrude outward by a predetermined amount from the outer circumferential edge of the circular portion of the casing V to facilitate rotation by gripping the rotary disk 9, and the through hole c , e and the space h are referred to as a chemical fluid flow path 16. In the figure, 17 is a mounting hole for mounting and fixing the housing V on the chemical tank T, and 18 is "O"
The ring 19 is a chemical liquid injection part.

Since this device is constructed as described above, when the rotating platen 9 is grasped and rotated to a suitable position, and a specific number Z is made to face the tip of the pointer 10, an orifice i having a diameter corresponding to the number Z is located in the cavity h at a position symmetrical to the number Z, while the rotating platen 9 is held between the upper and lower collars 11 and 12 by the elastic forces of the coil springs 13 and 14 and held in a specified position. Next, when compressed air is injected into the chemical tank T through the air supply pipe 4, the chemical solution d in the chemical tank T, which has been previously mixed to a uniform concentration by the mixing blade 3, is forcibly sent into the lower end of the supply pipe 5, passes through the through hole c in the lower bushing 6 and below the cavity h, and then passes through the orifice i of the rotating platen 9,
The liquid passes through the upper part of the space h and the through hole e of the upper bush 7, and then through the discharge pipe 8, and a predetermined amount of the liquid d is sprayed from the nozzle to a predetermined area.
When the outer periphery of the pointer 10 is grasped and rotated to correspond to a predetermined number Z at the tip of the pointer 10, an orifice i having a diameter corresponding to the number Z is provided at a position symmetrical to the number Z.
is placed in the void h.

According to this invention, an appropriate number of orifices with different diameters are bored along the circumference of a rotary disk that is rotatably supported by the housing, and a predetermined diameter orifice is bored in the middle of the chemical liquid flow path inside the housing. By having an orifice facing the plant, a predetermined amount of chemical solution can be discharged extremely easily and accurately under stable conditions at all times, making it possible to easily adjust the amount of chemical solution applied to crops as necessary. ,
It is extremely convenient for the user, and since the rotary plate is rotatably supported on the housing,
When the orifice becomes clogged with dust, foreign matter, etc., the clogging can be easily and immediately removed by inserting a cleaning needle into the orifice, allowing the chemical solution to pass through smoothly, making it suitable for cleaning and maintenance. Moreover, when using conventional needle valves and orifices, it was necessary to replace items with different shapes and sizes each time the discharge amount was changed, making handling extremely complicated. It's simple, just setting the rotary plate is enough, and what's more, it can be used all the time.
Since it is possible to discharge a quantity of chemical solution that corresponds to the growing conditions of crops, it is possible to prevent the risk of chemical damage caused by too much or insufficient amount of chemical solution to crops, and the overall structure is extremely simple, making it easy to assemble. It is easy to install and disassemble, so inspection, repair, cleaning, parts replacement, etc. do not require a lot of effort and time, and since it is easy to handle, it can be used easily by anyone.
When the housing is placed on the chemical solution tank, there is no need to prepare a separate setting space, so this has practical benefits such as not causing unnecessary expansion of the entire device.

The above is an explanation of the embodiment when the casing V is placed on the chemical liquid tank T, but the present invention is not limited to this, and the discharge pipe 8 is directly inserted into the chemical liquid tank T, It is also possible to adopt a format in which a casing V supported by a stay (not shown) separate from the chemical liquid tank T is interposed.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; Fig. 1 is a perspective view of the proposed product when placed on a chemical solution tank, Fig. 2 is a plan view of the proposed product, and Fig. 3 is a view similar to that shown in Fig. 2.
It is a sectional view with a part of the line cut away. T... Chemical liquid tank, V... Housing, i... Orifice, 9... Turning plate, 16... Chemical liquid flow path.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A rotary disk in which a suitable number of orifices of different diameters are bored in a housing placed on a chemical liquid tank or set on the discharge side of a chemical liquid tank is rotatable. and one of the orifices is positioned in the chemical liquid flow path within the housing. (2) The liquid medicine discharge amount adjusting device according to claim 1, wherein the orifices are bored at equal or predetermined intervals along the circumference of the rotary disk.