![]() Device for electrostatic spraying of pesticides
专利摘要:
A system for the electrostatic spraying of liquids, particularly suitable for the application of pesticides at low volume. A sealable demountable container and support are provided, liquid being supplied from the container for atomization to an electrically conductive nozzle charged from one output terminal of a high voltage generator. Another output terminal of the high voltage generator connects to a field-intensifying electrode adjacent the nozzle, the electric circuit in the holder being completed by connections in the container. The nozzle and electrical power source preferably are carried on the container. 公开号:SU1075952A3 申请号:SU792834505 申请日:1979-09-25 公开日:1984-02-23 发明作者:Алан Коффи Рональд 申请人:Империал Кемикал Индастриз Лимитед (Фирма); IPC主号:
专利说明:
The invention relates to equipment for spraying liquids using an electrostatic method and can be used when spraying pesticides in agriculture. A device for electrostatic spraying of pesticides is known, comprising a container, an electrically driven spray head placed in its neck with a pesticide release hole, a grounded electrode that surrounds the spray head and is insulated from it. energy source and electrically connected to it a high-voltage generator, the poles of which are connected respectively to the spray head and the grounded electrode, and the holder of the holder ij. The known device has a simple structure, requires little energy (it has no moving parts and can be easily separated from dry cells) and is particularly suitable for use as a hand-held sprayer where it is difficult to use large energy sources, for example, when spraying agricultural crops. cultures. Electrostatic. Spraying of agricultural crops has the advantages of providing uniform plant coverage, with the droplets sticking around and behind the foliage, rather than covering only the surfaces facing the droplets, and reducing the droplets relative to the wind, which at best leads to wasteful consumption. TOBJPA, and in the worst case is dangerous to the environment. The known device is especially suitable for applying pesticides with a small or ultra-low volume (usually at a spraying rate of 0.510 liters of sprayed liquid per 1 hectare. Spraying with small or ultra-low volumes is suitable where water is hardly available as a diluent solution. However, the known device uses concentrated pesticidal compositions as needed. which are more or less toxic to humans. To be easily handled, the pesticide nebulizer must be reliable and adaptable, as well as suitable for spraying several types of pesticides. Different pesticides come in different compounds with different electrical properties. This requires thorough cleaning between using different pesticides, since, for example, traces of herbicides can damage crop crops sprayed against fungal infection. The need for such cleaning increases when the compositions are sprayed by an electrostatic method, since contamination can affect their ktricheskie properties. Thorough cleaning can damage the nozzles, resulting in improper spraying. The purpose of the invention is the HCKJao4eHHe need to clean the container and spray nozzle when changing the sprayed pesticide. The goal is achieved by the fact that in a device for electrostatic spraying of pesticides, containing a container, an electrically conductive spray head placed in its throat with a hole for pesticide release, a grounded electrode, covering the spray head and an isolated energy source and electrically connected to it with a high-voltage generator, whose poles Contact, respectively, with the spray head and a grounded electrode, and the container holder, the container. spraying with spray; head, and fastener, and the holder is provided with an electrical contact connected to one pole of a high voltage generator and interacting with the container's electrical contact in the working position, and a fastener interacting in the {Working position with the container fixing element, the spray head equipped with a cap or valve for closing its openings. In addition, the grounded electrode is mounted on a container that is equipped with an additional electric contact connected to a grounded electrode, and the holder is equipped with an additional electric contact that interacts with the additional electric contact of the container in working position, connected to the second pole of the high voltage generator and grounded. Figure 1 shows the container, a general view of the}} figure 2 - the end of the container; figure 3 is a section aa in Fig ... 2 in figure 4 - the holder of the container, top view; figure 5 - container neck, top view; figure 6 - wiring circuit when installing the container on the holder; 7 - the neck of the container, the second option, a vertical section on Fig - the neck of the container, the third option, a vertical section; figure 9 is a plate, top view. The container contains a bottle-shaped housing 1, made of high-density polyethylene, blown, a neck that is sealed, impermeable to liquids. contact with the neck 2, molded from polyacetal. The container contains a solution: 10% by weight of an insecticide in an aromatic hydrocarbon. The throat 2 is formed from two concentric cylinders 3 and 4, connected near their ends to form a passage. In the inner cylinder 4, there is a polyacetal plug 5, the outer diameter of which is slightly less than the inner diameter of the cylinder 4. The plug 5 is held in place in the cylinder 4 by means of external projections 6. Thus, the plug together with the cylinder 4 forms an annular channel 7 capillary dimensions through which the sprayed liquid can flow. The stopper 5 is also provided with a central opening into which a polyethylene capillary tube 8 is inserted, projecting into the body 1 of the container. An annular nozzle formed by the stopper 5 and the cylinder 4 is sealed with a sealing cap 9 (FIG. 3) to prevent liquid leakage. In the container on the upper surface of the neck 2 there is a 10-volt battery 10 which has a special design and contains the amount of energy sufficient to atomize the liquid contained in the contour; It does not have a battery, taking into account the possibility of current leakage with a 50% reserve of energy. Put the battery pole 10 connected to a brass contact 11 located on the outer wall of neck 2 by means of a strip 12 of conductive paint coming from battery 10 above the edge of neck 2 and down outside last. The negative pole of the battery 10 is connected by means of a conductive strip 13 to a second contact 14, the latter is connected by conductive strip 15 to the edge 16 of cylinder 3, and the edge 16 is coated with an electrically conductive paint to form an annular conductor. Similarly, the edge 17 of the inner cylinder 4 of the coating is formed with an electrically conductive paint to form the annular conductor and is connected by means of an electrically conductive ink strip 18 passing downwards into the cylinder 4 and above the upper edge of the neck with a third brass contact 19 located outside the neck 2. Conductive polo To prevent leakage of current through the sprayed liquid, 12,13 and 18 are protected inside the container body 1 with insulating varnish. The slewing key 20 is also provided with a protruding key 20. The container holder (Fig. 4) contains a case 21, which can be held in a hand carrying an alternating high voltage generator 22. The case 21 is made elongated and ends in a ring 23, inside which to be inserted neck 2 cylinder. The keyway 24 corresponds to the key 20 on the neck 2. Inside the ring 23 brass contacts 25-27 are installed with the possibility of contact with contacts 11.14 and 19 on the container, respectively. Contact 25 is connected using insulated wire 28 with a switch 29, which in the On position connects contact 25 through conductor 30 to an input terminal. A high-voltage generator terminal 22. Contact 26 through insulated wire 31 and wire 32 is connected to earth, and wire 32 represents a metal wire with an uninsulated end down on the ground. The contact 27 is connected via an insulated wire 33 to the positive output terminal 34 of the high-voltage generator 22. The negative output terminal 35 of the generator 22 is connected to a grounded wire. I During operation, the cylinder is placed in a vertical position, and the sealing cap 9 is removed. Ring. 23 holders are then placed over the neck 2 of a tight-fit balloon, and then both mating parts are pushed together. The ring 23 snatches the neck 2 firmly enough to hold the cylinder in the appropriate position, the key 20 on the cylinder interacts with the keyway 24, holding the cylinder in a position in which the following pair of parts come into contact with each other by touching: 11 and 25, 14 and 26 , 19 and 27. The chain thus formed is shown in FIG. Then, using the holder, the container op1p6 is thrown into position above the sprayed object and the liquid begins to drip from channel 7. The switch 29 is immediately turned into the On position. This allows current to flow from the battery 10 through contacts 11 and 25 to the generator 22, which in turn causes a high voltage transmission (preferably 15 kV) from terminals 34 through contacts 27 and 19 to the electrically conductive surface 17 of cylinder 4. In addition, the electrically conductive surface 16 of cylinder 3 is grounded through contacts 14 and 26 and the grounded wire 32. Thereby two conductive surfaces 17 and 16 is created a strong electrostatic field, which causes the phenomenon of fluid adjacent to the surface 17 which is sprayed downwardly in a very fine spray a controlled amount of particles in the direction is any object to be treated. As the cylinder leaves the liquid through the annular channel 7, the decreasing pressure of the container is equalized with air passing upwards through the central capillary tube 8. Discontinuation is stopped by turning off switch 29 and turning the container with the neck up. There may be various modifications of the proposed device, which is intended to be disposed of after use. However, reusable containers with rechargeable batteries can also be made. It has been found that for reusable containers it is better to make a nozzle and an electrode, as well as other electrical connecting elements made of metal, than to apply a conductive coating or paint. For this reason, such reusable containers are significantly more expensive than discarded. The proposed device includes a grounded wire in the form of a metal wire dragged along the ground. This has its disadvantages that the wire may catch or become tangled. The device works better when connected to ground, and there is no need for low resistance. A conductor connected to earth may be, for example, a metalized strip, made along the handle of the holder. When the operator squeezes the handle of the holder, the electrical connection to the ground is through the operator’s body. Although such a connection has high resistance, it is basically equivalent - a case with low resistance. Experiments have shown that, in a device of this type, the voltage on the cylinder electrode may be higher than the earth potential by 100 or 200 V, even when the operator works in rubber shoes under relatively dry conditions. Such a voltage on the electrode differs little from the potential of the earth in comparison with the voltage on the nozzle, which is several thousand volts. The current passing through the operator is so small that it does not pose any danger to him, and he doesn’t even feel anything. The proposed device is used for spraying a pesticide, especially compositions containing pesticides in an organic liquid carrier as well as spraying coatings or paints, for example, when finishing a flat. The holders of the container are adapted to be conveniently held in the HAND, but can also be transported on vehicles such as a tractor or aircraft when they contain more than one container. However, in the case of transportations on tractors or in an airplane, it may be preferable to have a device in which the spray nozzle is not integral with the container. In this case, a relatively large container feeds several spray nozzles, and electricity can come from batteries or generators carried by the vehicle. Figures 7-9 illustrate two other sealing (closure) devices that can be used in the proposed containers. Both are shown in containers with which the spray nozzle is not integral. In Fig. 7, the container 36 has a neck 37 in which a simple mechanical ball valve is installed, comprising a ball 38, spring-loaded against the seat 39 by a compression spring 40, which is simplified into the stoppers 41. Before mouth; The ball valve prevents liquid from escaping from container 36. When installing container 36 on device 42, ball 38 is pressed inward from seat 39 by pin 43, allowing fluid to pass from container 36 to device 42, followed by hitting the electrostatic spray head (not shown). At the same time, the contacts 44 at the outlet of the neck 37 close the electrical circuit in the device 42, allowing the corresponding high voltage to be applied to the spray head. 8 shows another embodiment of a container valve with an electrostatic principle of operation. The valve contains a metal plate 45 with a central hole 46 ,; installed in the neck 47 of the cylinder 48. Below the plate 45 is the second plate 49, the top view of which is given in Fig.9. It has a central protrusion 50 located in the hole 46 of the plate 45 and. blocking the release of fluid from the container. The plate 49 has peripheral grooves 51, and it is pressed against the plate 45 by a compression spring 52. The metal plates 45 and 49 are coated on their lower and upper surfaces, respectively, with a thin dielectric layer (epoxy resin). Placed outside the neck 47, contacts 53 and 54 are electrically connected through metal plates 45 and 51. During operation, container 48 is installed in a spray device (not shown) with tight connection to a pipe leading to an electrostatic spray head. The contacts 53 and 54 are connected with this installation, respectively, with the external output terminal of the high voltage generator and with the conductive surface of the electrostatic spray head. Thus, a voltage of about 20 kgV is applied to the plates 45 to 49. This voltage causes the plates to dissipate due to electrostatic repulsion against the action of the spring. ff 52, as a result of which the liquid passes from the container 48 through the opening 46 and the slots 51 into the device to exit to the spray head. At the same time, a voltage is applied to the spray head to spray the liquid flowing into it. Without a container on the device can not open the electrostatic valve, and the electrostatic head 0 cannot apply voltage. JZ7 22 FIG. D eleven one FIG. 6
权利要求:
Claims (2) [1] 1. DEVICE FOR ELECTROSTATIC SPRAYING OF PESTICIDES, containing a container placed in its throat with an electrically conductive, spray head with a hole for releasing pesticides, a grounded electrode, covering the spray head and an isolated energy source and an electrically connected high-voltage generator, the poles of which are connected respectively to the poles a spray head and a grounded electrode, and a container holder, characterized in that, in order to eliminate the need for cleaning the container and the spray nozzle when changing the sprayed pesticide, the container is equipped with an electrical contact connected to the spray head and a fastening element, and the holder is equipped with an electrical contact connected to one pole of the high voltage generator and interacting with the container electrical contact in the operating position, and a fastening element interacting in the working position with the fastener element of the container, and the spray head is equipped with a cap or valve to close its holes. [2] 2. Device pop. 1, distinguished by the fact that the grounded electrode is mounted on the container, which is equipped with an additional electrical contact connected to the grounded electrode, and the holder is equipped with an additional electrical contact, interacting with the additional electrical contact of the container in the working position, connected to the second pole of the high voltage generator and grounded. >
类似技术:
公开号 | 公开日 | 专利标题 SU1075952A3|1984-02-23|Device for electrostatic spraying of pesticides US4401274A|1983-08-30|Containers for use in electrostatic spraying US4381533A|1983-04-26|Atomization of liquids EP0031649B1|1984-09-26|Containers and holders therefor for use in electrostatic spraying CA1165999A|1984-04-24|Containers and holders therefor for use inelectrostatic spraying US4209134A|1980-06-24|Containers for use in the electrostatic spraying of liquids WO2014055432A1|2014-04-10|Spray tip assembly for electrostatic spray gun GB2073052A|1981-10-14|Electrostatic spraying US4398671A|1983-08-16|Holders for containers used in electrostatic spraying GB2061769A|1981-05-20|Electrostatic spraying CA1169241A|1984-06-19|Holder for electrostatic spraying CA1142746A|1983-03-15|Container for electrostatic spraying of liquids CA1169242A|1984-06-19|Containers for use in electrostatic spraying NZ202619A|1984-02-03|Electrostatic spraying:liquid container holder opens container seal KR890000528B1|1989-03-20|Containers and holders therefor for use in electrostatic spraying DK152894B|1988-05-30|Demountable container for electrostatic spraying Sherman et al.1983|Electrodyn Sprayer Pesticide Application Using Electrostatic
同族专利:
公开号 | 公开日 IL58243D0|1979-12-30| GB2030060A|1980-04-02| JPH0122025B2|1989-04-25| ZA794777B|1980-08-27| IE791711L|1980-03-26| US4376514A|1983-03-15| IN159465B|1987-05-23| NZ191545A|1984-02-03| YU42194B|1988-06-30| PL127210B1|1983-10-31| PT70228A|1979-10-01| PL125528B1|1983-05-31| SE8600349D0|1986-01-27| HUT36749A|1985-10-28| CS239924B2|1986-01-16| US4275846A|1981-06-30| IT7925939D0|1979-09-21| MX146986A|1982-09-21| PH20834A|1987-04-30| HK31785A|1985-05-03| AT379288B|1985-12-10| LU81715A1|1980-10-08| KR830002301B1|1983-10-22| IL58243A|1981-12-31| DE2937879C2|1991-11-28| DE2937879A1|1980-04-03| NL187838B|1991-09-02| KR830000926A|1983-04-28| PL218501A1|1980-09-08| YU233879A|1984-08-31| CY1287A|1985-07-05| ES484436A1|1980-04-16| KR830000927A|1983-04-28| JPS6427658A|1989-01-30| US4306685A|1981-12-22| SG11885G|1985-08-16| CH644773A5|1984-08-31| JPS6358630B2|1988-11-16| ATA629379A|1985-05-15| GR66396B|1981-03-20| DK403179A|1980-03-27| FR2437249A1|1980-04-25| DD146252A5|1981-02-04| RO84359A2|1984-07-17| TR20761A|1982-06-24| KE3500A|1985-02-22| NL187838C|1992-02-03| EG14012A|1983-03-31| FR2437249B1|1983-04-01| RO84359B1|1984-09-30| GB2030060B|1982-12-01| DK154122B|1988-10-17| OA06347A|1981-06-30| IN159466B|1987-05-23| AU5078479A|1980-04-03| AR226827A1|1982-08-31| SE8600349L|1986-01-27| NL7906968A|1980-03-28| HU184132B|1984-07-30| IN156067B|1985-05-04| BE878970A|1980-03-24| JPS5544399A|1980-03-28| SE7907929L|1980-03-27| CS353782A2|1984-02-13| BR7906098A|1980-06-03| ZM7979A1|1980-05-21| MW2779A1|1981-09-09| CS239925B2|1986-01-16| IE49300B1|1985-09-18| HU192182B|1987-05-28| CS235081B2|1985-04-16| DK154122C|1989-03-20| ZW17679A1|1981-05-06| SE465814B|1991-11-04| IT1123294B|1986-04-30| MY8600461A|1986-12-31| CS353682A2|1984-02-13| CS637679A2|1984-02-13| AU535249B2|1984-03-08|
引用文献:
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申请号 | 申请日 | 专利标题 GB7838180A|GB2030060B|1978-09-26|1978-09-26|Electrostatic spraying of liquid| 相关专利
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