KR100538645B1 - Electrostatic spraying apparatus for agricultural chemicals - Google Patents

Abstract

Disclosed is a pesticide spraying device using an electrostatic charge phenomenon. The electrostatic discharge pesticide spraying device includes a nozzle body including a nozzle hole, an electrode member positioned in front of the nozzle hole, and a voltage supply unit for charging droplets ejected from the nozzle hole, the electrode member comprising an electrode loop and an electrode loop composed of a conductor. An insulating coating covering the outer surface, wherein the insulating coating is partially removed to form at least one electrode hole, through which the electrode loop is partially exposed. Unlike conventional sparging devices in which the electrodes are fully exposed, the current can be minimized during operation since the electrode loops are covered with insulating material and only partially exposed through the holes.

Description

ELECTROSTATIC SPRAYING APPARATUS FOR AGRICULTURAL CHEMICALS}

The present invention relates to a pesticide spraying apparatus, and more particularly, to a pesticide spraying apparatus using an electrostatic discharge that can greatly improve the pesticide spraying efficiency by charging the liquid droplet (liquid droplet) injected from the nozzle port with an electrostatic charging device. .

Currently, pesticide spraying for pest control of crops is being carried out by mechanical mass spraying. This mass spraying method has not only low efficiency of pesticide spraying but also excessive use of pesticides, causing serious problems such as safety of agricultural products and environmental pollution. Existing pesticide spraying devices tend to use excessive amounts of pesticides because of low control efficiency. In addition, pests that damage crops are usually attached to the back of the leaves, whereas conventional pesticide spraying devices spray pesticides only on the front of the leaves, resulting in lower control efficiency.

In order to overcome the disadvantages of the conventional pesticide spraying device is a pesticide spraying device using the electrostatic discharge. The electrostatic discharge pesticide spraying device includes an electrostatic generating device for generating a high voltage of the positive electrode (+), and the ring-shaped electrode forms a positive voltage (+) during the operation of the pesticide spraying device, and the pesticide sprayed from the nozzle hole. The droplets are charged to the cathode (-) while passing through the ring-shaped electrode. Since the crops to be sprayed are grounded to the ground, the sprayed droplets act as positive (+) relatively to the sprayed droplets, and the negatively charged droplets are uniformly attached to the front and rear of the leaves of the crops for control. A great effect can be obtained.

1 is an exploded perspective view for explaining a conventional electrostatic discharge pesticide spraying device. The electrostatic discharge pesticide spraying device shown in FIG. 1 is described in Korean Patent Publication No. 10-0228033.

Referring to FIG. 1, the conventional electrostatic discharge pesticide spraying device uses a nozzle body 60, an adapter 64 mounted in front of the nozzle body 60, and an electrostatic charge supplied through an electric wire 68 from an electron supplier. And a cap 62 for charging the pesticide to be sprayed.

The nozzle body 60 is fitted to the nozzle unit through the fixed end 60c, and a blowout hole 60b is formed in front of the nozzle body 60, and a coupling part 60a is formed in the middle thereof. In addition, one end of the adapter 64 is formed with a through hole 64b fitted to the front end of the nozzle body 60, and the other end is formed with a plurality of lugs 64a fitted to the coupling portion 60a. Then, one end of the cap 62 is formed with a spray hole (62b) is ejected into the chemical liquid, the other end is formed with a locking groove (62a) is engaged with the locking projection (66). Electrostatic charge is transmitted from the electron supply to the cap 64 through the wire 68 and the terminal 69, and the chemical liquid ejected while passing through the charged cap 64 is charged with negative charge or the like.

Figure 2a is a plan view showing another conventional electrostatic discharge pesticide spraying device, Figure 2b is a front view showing the electrostatic discharge pesticide spraying device of Figure 2a. The pesticide spraying apparatus shown in FIGS. 2A and 2B is disclosed in Korean Patent Laid-Open Publication No. 10-2002-14116.

Referring to FIGS. 2A and 2B, the charging ring 33 is formed in a circular shape that penetrates up and down to increase the efficiency while reducing the leakage of high voltage, and the charging ring 33 is fixed by the connection part 35. It is fixed to 31 and is located in the upper region of the spray nozzle 13 installed in the main body. A low voltage of about 12V DC is supplied from the battery installed in the main body to the electrostatic generator, and the electrostatic generator generates a high voltage of positive (+) from the low voltage supplied from the outside and transmits it to the electrostatic charger. The high voltage of the positive electrode (+) that is transmitted forms an electric field in the charging ring (33), which is an electrostatic charging device, and sprays the pesticide in the spray nozzle (13) while the chemical liquid passes through the charging ring (33) to the negative electrode (-). Charged and sprayed.

As shown in Figure 1 to 2b, in the conventional electrostatic discharge pesticide spraying device, the electrode is composed of a conductor such as metal, the entire electrode is exposed to the outside. Therefore, a water film may be formed around the electrode while spraying the pesticide, etc., it is impossible to prevent the large leakage current flowing through the pesticide.

Since the electrostatic charge charged to the electrode may leak due to leakage of current, charging of the pesticide droplets may not be performed smoothly, which may cause energy loss and waste due to leakage, and the voltage applied to the electrode may be relatively low. It may be high and may threaten worker safety.

In order to solve the above problems, one object of the present invention is to provide an electrostatic discharge pesticide spraying device capable of minimizing leakage of current from the charging electrode.

In addition, another object of the present invention is to provide an electrostatically charged pesticide spraying apparatus that can adjust the position of the electrode to form an optimal spraying state according to the pressure, flow rate, etc. to which the pesticide is sprayed.

According to a preferred embodiment of the present invention for achieving the above object of the present invention, the electrostatic discharge pesticide spraying device is a nozzle body including a nozzle mechanism, the electrode member for charging the liquid droplet (liquid droplet) and the electrode member A voltage supply for applying charge. In particular, the electrode member includes a loop-shaped electrode loop and an insulating coating coated on the electrode loop, and the insulating coating is partially removed to form one or more electrode holes. Since the electrode loops are partially exposed, sufficient charge can be provided to charge the droplets. In addition, since the electrode loop made of a conductor is exposed only through the electrode hole, the exposed area can be minimized, and current can be prevented from leaking by the water film formed around the electrode member.

As mentioned above, the conventional pesticide spraying apparatus using the electrostatic charging is exposed to the outside as the entire charging electrode is exposed to the outside, a large amount of charge is not used for charging the droplets, but often leaked to the outside. However, in the pesticide spraying apparatus according to the present invention, since the electrode loop is exposed only through the electrode hole, the exposed area can be significantly reduced and the leakage current can be reduced. Insulation coating has an insulating property, for example, can be formed by coating a synthetic resin or the like.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments.

Example 1

3 is a perspective view of a pesticide spraying apparatus according to a first embodiment of the present invention, Figure 4 is a partial cross-sectional view of the pesticide spraying apparatus according to the first embodiment, Figure 5 is an electrode of the pesticide spraying apparatus according to the first embodiment It is a partial cutaway perspective view for demonstrating a member.

3 and 4, the pesticide spraying apparatus 100 includes a nozzle body 110, an electrode member 120, a voltage supply unit 130, and a cap frame 140. The nozzle body 110 is connected to the body of the pesticide spraying device or fixed to the end of the pipe, the electrode member 120 and the cap frame 140 is mounted on the nozzle body 110, the electrode member 120 is a voltage supply Electrically connected to the 130 to charge the sprayed droplets.

Specifically, a passage connected to the pesticide reservoir (not shown) is formed in the nozzle body 110, and a nozzle hole 114 for spraying the pesticide to the outside is formed at the end of the passage. A coupling portion 112 corresponding to the inner surface of the cap frame 140 is formed around the nozzle hole 114, and the cap frame 140 is integrated with the nozzle body 110 by being fitted to the coupling portion 112. Is fixed. The nozzle body 110 may be mounted in a form integral with or detachable from the body of the pesticide spraying device, and may be similarly mounted at the end of the pipe extending from the pesticide spraying device. In general, the nozzle body 110 is grounded to have zero charge.

The electrode member 120 includes an electrode loop 122 and an insulating coating 124 covering the outer surface of the electrode loop 122. The electrode member 120 includes a loop part I and a support part II in a shape of a loop. do. The support part II is formed integrally with the loop part I to fix the position of the loop part I and to transfer electric charges to the loop part I. In the drawing, the part corresponding to the support 128 is the support part II, and the support 128 fixes the loop part I so that the loop part I is spaced apart from the nozzle port 114 by a predetermined interval, and partially Inserted into the voltage connection unit 132 is fixed.

The electrode loop 122 is made of a conductor and can pass electric charges. However, since the electrode loop 122 and its periphery are coated with an insulating coating 124 made of an insulating material such as natural rubber or synthetic resin, the electrode member 120 may block leakage of charge passing through the electrode loop 122 to the outside. The charges transmitted from the voltage supply unit 130 by the insulating coating 124 can only move along a predetermined route, and are not transmitted through a path other than the predetermined route, so that the charge does not leak by direct contact with the pesticide. In the present specification, the electrode loop 122 may include a ring shape as well as a closed shape such as a polygon and a rectangle, and the loop shape as a whole may not be completely closed but may be partially open. It will also include forming. DC or pulsed high voltage is applied to the electrode loop 122.

Referring to FIG. 5, electrode holes 126 are formed at uniform intervals on the inner surface of the loop part I of the electrode member 120. The electrode hole 126 is formed in a hole shape having a width of about 0.5 to 2.0 mm by partially removing the insulating coating 124. As illustrated, eight electrode holes 126 are spaced at an angle of about 45 degrees. Formed to form symmetry. In addition, since the electrode hole 126 is formed facing the inside of the loop portion I, the contact surface can be concentrated and the charging efficiency can be improved. Since the electrode loop 122 is exposed only through the electrode hole 126, electrons are transferred from the electrode loop 122 to the droplet through the electrode hole 126 in the process of spraying the droplet to charge the droplet. The droplets are also sufficient to charge the ejected droplets with electrons transmitted through the electrode holes 126, and the designer can change the number of electrode holes, the angle between the electrode holes, the size of the electrode holes, and the like according to the injection conditions.

Referring to FIGS. 3 and 4 again, the cap frame 140 is mounted at the end of the coupling part 112, and an injection passage connecting the nozzle hole 114 and the injection hole 142 is formed inside the cap frame 140. Formed. In order to prevent the cap frame 140 from leaking current, at least the inside of the cap frame is preferably made of an insulating material. In addition, in order to facilitate the spraying of the pesticide, the passage inside the cap frame 140 is formed in a cone shape, and around the inlet of the nozzle port 114 and the inside of the cap frame 140 of the electrode member 120. The loop portion I is located on the central axis of the nozzle port 114. Therefore, the pesticide sprayed through the nozzle port 114 moves in the air in the form of fine droplets, and is charged through the loop part I and then spread through the injection hole 142.

The voltage supply unit 130 includes a voltage connection unit 132 and a wire 134 mounted to the cap frame 140 or the nozzle body 110. Charge is transferred from the external source to the voltage connection 132 through the wire 134, and the wire 134 and the support 128 are electrically connected inside the voltage connection 132 to transfer the charge to the electrode loop 122. There is a number. Although a part of the voltage supply unit 130 is formed adjacent to the nozzle in the present embodiment, the present invention is not limited thereto and may be mounted at various positions of the pesticide spraying device.

Compared with the prior art, when the pesticide is sprayed with a conventional pesticide spraying device having a nozzle of about 1.2mm diameter, the adhesion rate to the back of the leaves of the crop stays about 10%, but the pesticide spraying device of the present invention In the case of the same conditions, the effect can be further improved with a smaller dose. According to the experiment, the spraying was carried out using a nozzle hole having a diameter of about 0.59 mm, and the spraying amount was only about 1/4 of the existing amount, but the adhesion rate to the back of the leaves of the crop was about 43%, more than four times. Effect was obtained.

Example 2

6 is a perspective view of a pesticide spraying apparatus according to a second embodiment of the present invention, Figure 7 is a partial cross-sectional view of the pesticide spraying apparatus according to the second embodiment.

The pesticide spraying apparatus 200 according to the second embodiment is characterized in that it comprises a cap frame 240 including an electrode member 220 and a drain 244 that can adjust the position up and down, and other components And the combination is substantially the same as in the previous embodiment. Therefore, the description of this embodiment can refer to the description and drawings of the previous embodiment.

6 and 7, the pesticide spraying device 200 includes a nozzle body 210, an electrode member 220, a voltage supply unit 230, and a cap frame 240.

A passage for connecting the nozzle port 214 and the pesticide reservoir (not shown) is formed inside the nozzle body 210, and a coupling part 212 for fixing the cap frame 240 around the nozzle port 214. ) Is formed. The nozzle body 210 according to the present embodiment may also be mounted in a form that can be formed integrally or detachably with the body of the pesticide spraying device, and the nozzle body 210 has a zero charge by being grounded.

The electrode member 220 structurally includes an electrode loop and an insulating coating, and the position of the loop portion is fixed by the support 228, and transfers electric charge through the conductor portion of the support 228. At this time, a DC or pulsed high voltage is applied to the electrode loop. Part of the support 228 is accommodated in the voltage connection portion 232, and is mounted to be movable and fixed to the position of the support 228 up and down. As in the previous embodiment, the electrode loop is made of a conductor so that electric charge can pass therethrough, but since the electrode loop and its periphery are coated with an insulating coating such as natural rubber or synthetic resin, the electrode member has no charge other than a predetermined path. It can prevent leakage. In addition, electrode holes are formed on the inner surface of the loop part in the electrode member 220 at uniform intervals. The electrode hole is formed in a hole shape having a width of about 0.5 to 2.0 mm by partially removing the insulating coating, and eight electrode holes 226 are formed at about 45 degree angular intervals to form symmetry.

Since the electrode loops are insulated by the insulating coating, in the process of spraying the droplets, electrons are transferred to the droplets only through the electrode holes to charge the droplets. That is, the pesticide spraying apparatus according to the present embodiment can minimize the contact area between the electrode loop and the pesticide to prevent excessive leakage of current. The droplets are also sufficient to charge the ejected droplets with the electrons transmitted through the electrode holes, and the designer can change the number of electrode holes, the angle between the electrode holes, the size of the electrode holes, etc. according to the injection conditions.

The cap frame 240 is mounted while partially accommodating the coupling part 212, and an injection passage connecting the nozzle hole 214 and the injection hole 242 is formed inside the cap frame 240. In order to prevent the cap frame 240 from leaking current, at least the inside of the cap frame is preferably made of an insulating material. In addition, in order to facilitate the spraying of the pesticide, the passage inside the cap frame 240 is opened in a cone shape, and around the inlet of the nozzle port 214 and inside the cap frame 240 of the electrode member 220. The loop portion I is located on the central axis of the nozzle port 214. Therefore, the pesticide sprayed through the nozzle hole 214 moves in the air in the form of fine droplets, and is charged through the loop part I and then spread through the injection hole 242.

Unlike the pesticide spraying apparatus 100 of the first embodiment, the position of the loop portion in the electrode member 220 may be adjusted while moving with each other. Therefore, the user may maintain the proper distance in consideration of the internal space of the cap frame 240 and the injection amount of the pesticide, the interval to the nozzle hole 214, and the like. This allows the user to perform the induction field in an optimal state. To this end, the cap frame 240 is formed with a moving slit 246 that can guide the vertical movement of the support 228.

In addition, the cap frame 240 is formed with a drain port 244 positioned adjacent to the nozzle port 214. Since the pesticide accumulated in the cap frame 240 is quickly discharged through the drain hole 244, the surroundings of the nozzle hole 214 may be prevented from being locked by the pesticide, and the nozzle hole 214 and the cap frame 240 may be prevented. ) Can also be easier to clean.

The voltage supply unit 230 includes a voltage connection unit 232 and a wire 234 mounted to the cap frame 240 or the nozzle body 210. The charge is transferred from the external source to the voltage connection 232 through the wire 234, and the wire 234 and the support 228 are electrically connected inside the voltage connection 232 to transfer the charge to the electrode loop. The voltage connection part 232 accommodates a part of the support 228 and can guide the vertical movement of the support 228 and fix it at a specific position. To this end, the voltage connection unit 232 may include a separate position adjusting tool, and the user may conveniently adjust the distance between the electrode member 220 and the nozzle hole 214 using the position adjusting tool.

In the conventional pesticide spraying device, since spraying a large amount of pesticides on the crops, such as showering, the control efficiency is very low compared to the spraying pesticides. In addition, due to the relatively low efficiency and the application of a significant amount of pesticides, considerable energy was also consumed for the spraying of pesticides.

However, the pesticide spraying device according to the present invention can spread the pesticide evenly on the front and rear of the crop leaves, even using a smaller amount of pesticide, can be attached to the pesticide uniformly can provide more improved efficiency and effect have. Compared with the prior art, when the pesticide is sprayed with a conventional pesticide spraying device having a nozzle of about 1.2mm diameter, the adhesion rate to the back of the leaves of the crop stays about 10%, but the pesticide spraying device of the present invention In the case of the same conditions, the effect can be further improved with a smaller dose. According to the experiment, the spraying was carried out using a nozzle hole having a diameter of about 0.59 mm, and the spraying amount was only about 1/4 of the existing amount, but the adhesion rate to the back of the leaves of the crop was about 43%, more than four times. Effect was obtained.

In addition, since an insulation coating is used for the electrode loops to prevent leakage and the pesticide droplets are charged only through the electrode holes, the efficiency of charging the droplets to negative charges can be further improved, and an optimum induction field effect can be obtained. Of course, since current leakage is prevented, unnecessary waste of energy can be prevented.

In addition, by adjusting the upper and lower positions of the electrode member, it is possible to adjust the interval between the electrode loop-nozzle port and the interval between the electrode loop-cap frame, to perform the pesticide spraying operation while maintaining the best spraying state according to the conditions of use. There is a number.

As described above, although described with reference to the preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

1 is an exploded perspective view for explaining a conventional electrostatic discharge pesticide spraying device.

Figure 2a is a plan view showing another conventional electrostatic discharge pesticide spraying device.

Figure 2b is a front view showing the electrostatic discharge pesticide spraying device of Figure 2a.

3 is a perspective view of a pesticide spraying apparatus according to the first embodiment of the present invention.

4 is a partial cross-sectional view of the pesticide spraying apparatus according to the first embodiment.

5 is a partial cutaway perspective view for explaining the electrode member of the pesticide spraying apparatus according to the first embodiment.

6 is a perspective view of a pesticide spraying apparatus according to a second embodiment of the present invention.

7 is a partial cross-sectional view of the pesticide spraying apparatus according to the second embodiment.

<Explanation of symbols for the main parts of the drawings>

100, 200: Pesticide spraying device 110, 210: Nozzle body

112 and 212: coupling section 114 and 214: nozzle

120, 220: electrode member 122: electrode loop

124 ： Insulation covering 126 ： Electrode hole

128, 228: support 130, 230: voltage supply unit

132, 232: Voltage connection 134, 234: Wire

140, 240: Cap frame 244: Drain

246 ： Moving slit

Claims (9)

In the blackout pesticide spraying device, A nozzle body including a nozzle hole; Located in front of the nozzle port, comprising a conductor and an insulating coating covering the outer surface of the electrode loop and the electrode loop, the insulating coating is partially removed to form at least one electrode hole, through the electrode hole An electrode member with the electrode loop partially exposed; And And a voltage supply part electrically connected to the electrode member to apply a voltage to the electrode loop. The method of claim 1, And a cap frame mounted to the nozzle body to accommodate the nozzle hole and the electrode member, wherein the electrode member is positioned inside the cap frame and electrically connected to the voltage supply part through the cap frame. The blackout pesticide spraying device characterized in that. The method of claim 2, The electrode member is electrostatically charged pesticide spraying device, characterized in that mounted to be movable up and down with respect to the nozzle so that the gap between the electrode member and the nozzle. The method of claim 2, Electrostatic discharge pesticide spraying device, characterized in that the drain port is formed on the side of the cap frame. The method of claim 1, The electrode loop of the electrode member is electrostatically charged pesticide spraying device, characterized in that spaced apart from the nozzle by a predetermined interval. The method of claim 1, The electrode hole is electrostatically charged pesticide spraying device, characterized in that formed on the inner surface of the electrode loop. The method of claim 1, The electrode hole is electrostatically charged pesticide spraying device, characterized in that formed in the electrode loop at a uniform distance or uniform angle intervals. The method of claim 1, Electrostatic discharge pesticide spraying device, characterized in that the direct current or pulsed high voltage is applied to the electrode loop. The method of claim 1, Electrostatic discharge spraying device is equipped with at least one electrostatic charge pesticide spraying device.