BRPI1101725B1 - IMPROVEMENT IN AGRICULTURAL SPRAYING MACHINE - Google Patents

Abstract

improvement in agricultural spraying machine. wherein the concentrated chemical products to be diluted in the clean water of the reservoir (5) are flexible packages (31), secured by pressure adapters (30) of a reservoir (22) pressure resistant to the discharge line of the pump (6) where it is connected by a tap (20) thereof, having the caps (23) tubes (25) in communication with the adapters (30), and which communicate with directional valves (27) and flow regulators (28) ), then joining into a duct (26) connected to the pump discharge line (6) after a check valve (29) thereof.

Description

(54) Title: IMPROVEMENT IN AGRICULTURAL SPRAYING MACHINE (73) Holder: TAKASHI NISHIMURA, Chemical Engineer. CGC / CPF: 02707128872. Address: Rua Japão, 1331, Pompéia, SP, BRAZIL (BR) (72) Inventor: TAKASHI NISHIMURA

Validity Term: 20 (twenty) years counted from 04/13/2011, observing the legal conditions

Issued on: 03/13/2018

Digitally signed by:

Júlio César Castelo Branco Reis Moreira

Patent Director

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IMPROVEMENT IN AGRICULTURAL MACHINE

PULVERIZATION.

[001] -This report refers to an improvement in an agricultural spraying machine and, more specifically, to the hydraulic circuit of that agricultural machine that eliminates any possibility of people coming into contact with the chemicals used as pesticides and fed to this machine.

[002] -As is known to technicians on the subject, agricultural spraying is necessary to defend the plantation of pests. It is carried out by tractor-drawn or self-propelled machines, which have a large reservoir, with defensive chemical diluted in water, also have a pump to pressurize and carry the solution from the reservoir to a rear set of the machine defined by a frame placed transversely and equipped with numerous spray nozzles.

[003] -Normally, the machine moves on the plantation and each spray nozzle travels a row of plants, spraying the diluted defensive product on it.

[004] -As the defensive product is extremely harmful to health, many precautions are taken for its handling, which includes care for filling the reservoir until the final disposal of the defensive product packaging.

[005] -In the sprinkler nozzles are installed anti-drip valves, to prevent dripping on the ground.

2/10 [006] - On the side of the machine there is a special funnel, with a venturi system at the bottom, which receives pressure and flow from the spray pump, which ejects into the water reservoir, through a hose, the chemical placed in the funnel. This reservoir has an internal stirrer to homogenize the mixture.

[007] -Once the defensive chemical bottle is emptied, it must be washed inside the funnel, by a jet of solution from the machine pump. Then, another pump ejects a quantity of clean water into the bottle from a second machine reservoir. Thus, the chemical bottle is considered clean and can be discarded. Then, the valve that activates the funnel venturi, the clean water pump and eventually the spray pump are turned off.

[008] -As the reservoir has a solution of the defensive product in water, the danger of contamination of people is very great, as it depends on the tightness of numerous elements of pressurized hydraulic circuit, such as connections, hoses, clamps, valves, as well as the resistance of materials to chemical attacks by the products used.

[009] -In this condition, although there are rules for handling and personal protection, the risk to health remains present.

[010] -The risk can be even greater when the plantation presents in some areas an attack of another type of pest, and the contents of the reservoir have to be changed.

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In this case, there must be a fixed reservoir of the same capacity as the machine to receive the solution. There will be a danger of refilling the machine with this product, now through an unprotected pump and tubes.

[011] -In view of the above, the present invention proposes an improvement in an agricultural spraying machine that features a spraying system that eliminates any possibility of contact of people with the chemical used as a pesticide.

[012] - Another objective of the present invention is to provide an improvement in an agricultural spraying machine that makes it possible to replace the defensive product with another suitable for another area of the plantation, without the need to return the machine to the base to empty the reservoir, but directly by simply actuating valves.

[013] -Other improvement objective in which eliminates the funnel with the system of providing a discarded reservoir spray.

of the present invention is a special bottle washing refill agricultural machine [014] - Another objective of the present invention is to provide an improvement in an agricultural spraying machine that allows the elimination of the clean water reservoir, currently used for the last washing of the bottle of defensive to be discarded.

[015] -These and other objectives and advantages are achieved with an improvement in an agricultural machine of

4/10 spraying of the type comprised by a self-propelled or traction vehicle, with a chassis with four wheels, which receives a control cabin, a large reservoir, and also supports a pump and later a set of crossbars with spray nozzles, positioned above rows of plants. According to the invention, a hydraulic circuit is defined by a reservoir resistant to the pressure of the pump discharge branch, provided with a plurality of upper openings with covers, which have central ducts, each one of which presents in its extreme disposition in the internal part of the reservoir an adapter to receive a corresponding airtight and flexible packaging, containing a concentrated chemical product, all packages being supported by the respective ducts and immersed in clean water contained in the reservoir and pressurized by a derivation of the pump discharge branch, each one of the central ducts of each cover communicates through tubes and valves to the pump discharge duct after a check valve placed in that duct, which connects to the set of crossbars and exits through the spray nozzles.

[016] - For a better understanding of the invention, it will be described below with reference to the attached drawings, in which:

figure 1 represents a perspective view of a conventional self-propelled sprayer;

figure 2 represents the schematic of the defensive product hydraulic circuit used in the implement

5/10 conventional agricultural;

figure 3 represents the hydraulic circuit of the improvement in question; and figure 4 represents in partial vertical section, an enlarged detail of part of the pressurized reservoir, object of the present invention.

[017] -In accordance with these illustrations, the improvement in an agricultural spraying machine, object of the present invention, is applied in a self-propelled sprayer of the conventional type, illustrated in figure 1, which consists of a vehicle chassis 1, with four wheels 2 large, with an operator's cab 3 in front, an engine 4 normally powered by diesel oil, a large tank 5 of pesticide solution in water, a pump 6 of solution, a special hopper 7 for refilling the tank, a reservoir 8 of water cleaner and a set 9 of spray crossbars at the rear of the vehicle, with spray nozzles 10 intended for spraying the solution over the rows of plants.

[018] -As can be seen in figure 2, the hydraulic circuit diagram of the pesticide presents the circuit components with their connections through pipes, connections and valves.

[019] -The solution of the defensive product, contained in the reservoir 5 is aspirated by the pump 6 and distributed, in the bars 9 rear to the spray nozzles 10, previously passing through valves 11 that can inhibit one or the other branch.

6/10 [020] -When it is desired to place the concentrated chemical from a bottle 12 in the reservoir 5, a branch of the pump discharge 6 is opened by the valve 13 and is ejected into a venturi 14 of the base of a special funnel 15 , the venturi outlet 14 being connected by a hose 16 to the reservoir 5. In this condition the outlet of the funnel 15 is in the suction nozzle of the venturi 14 and any liquid poured into the funnel 15 is conveyed to the reservoir 5. The funnel 15 also has a vertical central tube 17 which, through a valve 18, communicates with the discharge branch of the pump 6 or selectively to the discharge branch of another pump 19 of clean water, coming from the reservoir 8.

[021] -As shown in figure 2, in the funnel 15 there is a bottle 12 of chemical product, which has already been emptied in the funnel with its neck down, fitted in the vertical central tube 17. Initially, valve 18 is activated to wash the bottle with solution from reservoir 5. Then, valve 18 is activated to close the solution passage of the reservoir and open a passage for clean water, coming from reservoir 8, driven by pump 19, for final cleaning of the bottle

12.

[022] -The present invention consists, more specifically, in the substantial alteration of the hydraulic circuit, which starts to operate almost entirely with clean water.

[023] -In figure 3, the new circuit is shown, where reservoir 5 is filled with clean water,

7/10 to the maximum level whenever refilled, without any concern with dosage.

[024] -Pump 6 receives clean water from the reservoir to repress it towards the spray bars 9 at the rear of the machine. Therefore, pump 6 starts to work only with clean water, and its durability will therefore be much longer than that of pumps 6 and 19 of conventional systems.

[025] - At the pump extension nozzle 6 there is a bypass 20, which passes through a valve 21 and reaches a reservoir 22, resistant to the pressure of that branch, with a content almost full of clean water, and having caps 23 that have central ducts 24, see figure 4, from where tubes or hoses 25 come out, which communicate with a duct 26, connected to the pump discharge branch 6, passing the fluid from tubes 25 through open / close valves 27 and flow regulating valves before coming together in duct 26.

[026] -A non-return valve 29, placed in the discharge duct of pump 6 prevents any reflux of duct 26 in the direction of bypass 20, and also of pump 6.

[027] -At the bottom of each cap 23, at its central duct 24, there is an adapter 30 to receive a hermetic, flexible packaging 31, containing the pure chemical, see figure 4. These packages 31 are immersed in the water contained in the reservoir 22, and, therefore, subjected to the same pressure as the reservoir and the discharge branch of the pump 6.

[028] -The pump 6 discharge line follows

8/10 for valves 11 and spray nozzles. Figures 3 and 4 illustrate this new arrangement.

[029] -The clean water in the reservoir 5 is sucked in by the pump 6. The largest water flow is that which crosses the check valve 29 and goes to the spray bars 9 at the rear of the vehicle. A portion of this water under pressure goes to reservoir 22 and gently pressurizes the packages 31, which shrink and send through the central ducts 24 of the caps 23, and through the tubes 25, through the valves 27 and 28, to the rest of the pump discharge branch 6, the selected chemical, which, from that point on, mixes with clean water, forming the solution to be sprayed.

[030] -Valves 27 select which or which chemicals should be mixed with water, so we can put different concentrated chemicals such as an example in a package 31 a herbicide and in another package 31 a fungicide, because as previously described the mixing occurs only after duct 2 6 in front of check valve 29. Valves 28 regulate the flow of the chemical, to effect its dosage. This dosage is accurate, since the pressure on the packaging is the same as that of the water around the reservoir 22, even if there are variations due to the partial activation of spray nozzles.

[031] -The packages 31 only open to the central ducts 24 of the covers 23 by the action of the adapter 30, which guarantees the tightness of the joint.

[032] -In the event of a packaging rupture

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31, inside the reservoir 22, only the water contained in the latter is contaminated by the chemical, because as already described and illustrated in figures 3 and 4, this reservoir 22 is connected to the system only by bypass 20, which connects to the system after the pump 6, which in turn prevents a return flow towards the reservoir 5. Thus, as the only outlet of the contaminated water is in the direction of the spray nozzles 10, when the leakage of the packaging 31 is detected, the pump 6 is turned off , thus zeroing the system pressure and blocking any return to the reservoir 5; then the reservoir 22 is emptied by its lid 23, losing only the contaminated liquid dosage contained in the reservoir 22, but the safety of the operator is preserved, all that is needed is the care in handling the damaged packaging 31 through the lid 23 and replacement.

[033] -All valves 11, 21, 27 and 28 can be solenoid valves controlled remotely from the machine cab.

[034] - As reservoir 5 operates with clean water, reservoir 8 of the conventional version was dispensed with. As the chemical is added to the water flow at the outlet to the nozzles 10, the special funnel 15 is no longer needed.

[035] -The empty packaging 31 does not represent a health hazard because it was immersed in clean water.

[036] -Discarding is very easy, since empty flexible packaging takes up very little volume (practically the volume of the raw material).

10/10 [037] -The preparation of the machine for spraying is very fast, in addition to not requiring more time to ensure homogenization through a stirrer.

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Claims (5)

1- IMPROVEMENT IN A SPRAYING AGRICULTURAL MACHINE, of the type comprised by a self-propelled or traction vehicle, with a chassis (1) with four wheels (2), which receives over it a control cabin (3), a large reservoir (5) , and also supports a pump (6) and later a set of cross bars (9) with sprinkler nozzles (10), positioned above rows of plants, characterized by the fact that it comprises a hydraulic circuit defined by a reservoir (22), resistant at the pressure of the pump discharge branch (6), provided with a plurality of upper openings with lids (23), which have central ducts (24), each of which has at its extreme disposition inside the reservoir (22) a adapter (30) to receive a corresponding airtight and flexible packaging (31), containing a concentrated chemical product, all packages (31) being supported by the respective ducts (24) immersed in clean water contained in the reservoir (22) and pressurized. a by a bypass (20) of the pump discharge branch (6), each of the central ducts (24) of each cover (23) communicating through tubes (25, 26) and valves (27, 28) to the pump discharge duct (6) after a check valve (29) placed in that duct, which connects to the set (9) of crossbars and exiting through the spray nozzles (10). 2- IMPROVEMENT IN AGRICULTURAL SPRAYING MACHINE, according to claim 1, characterized by the fact that each cap (23) of the reservoir (22) communicates 2/2 if through the central duct (24) with a tube (25) that passes through open / close valves (27) and flow regulating valves (28), joining the pump discharge duct (6) after a valve (29) through a single duct (26). 3- IMPROVEMENT IN A SPRAYING AGRICULTURAL MACHINE, according to claim 1, characterized by the fact that the branch (20) coming from the pump discharge branch (6), has a directional valve (21), which can direct part of the flow of the pump (6) to the reservoir (22), or close the pump pressure port (6) and thus isolate the reservoir (22) from the pump pressure (6). 4- IMPROVEMENT IN AGRICULTURAL SPRAYING MACHINE, according to claim 1, characterized by the fact that each flexible package (31) contains a central duct (24) connected to a tube (25) that passes through open type valves (27) / closes and by flow regulating valves (28), whose respective outlets connect to a single duct (26) that connects to the pump discharge pipe (6). 5- IMPROVEMENT IN SPRAYING AGRICULTURAL MACHINE, according to claims 1 or 2 or 3 or 4, characterized by the fact that the directional valves (11, 21, 27) and the flow regulators (28) are electrically operated valves remotely in the cab ( 3) the machine. 1/2 FI G 2 2/2 FIG 3 FIG 4