FI61985C - TILL ETT FORDON ANSLUTBAR BESPRUTNINGSANORDNING FOER VAEXTSKYDDSVAETSKA ELLER DYL - Google Patents

Description

Ι .- ^ ϋ-JI rRl .... ADVERTISEMENT ,, λλγ 4 £ Γα ™ (11) UTLÄGGININOSSKRIFT 61985 c (45) Patent granted 10 11 1982 Patent meddelat VTV (51) Ky.ik.3 / im.ci. 3 A 01 M 7/00, 21/00 FINLAND —FINLAND (21) PmtttMnmM ~ PK «iaMa ^ 802977 (22) H» k * ml «p * lvl - An * 6knln | * d * f 22.09.80 ^ ^ (23) Alkwpllvt — GlJtljhewdtf 22.09.80 (41) Interpreters Swept - Bllvlt offumllf 23.03. 82 fonts. ) · R «ki * t« rihallitut Nlhtlvik, .p «on,. kuutlulkutoun p * m.-

Patent- och raglsteratyralaan '7 AnsOkan uttafd och utUkrHtun pubticurad 30.07.82 (32) (33) (31) Pyyd * «y utuolkuut — eujtrd prior ** (71) (72) Eino Hakala, 29250 Nakkila, Finland-Finland (FI) ) (7k) Oy Heinänen Ab (5k) Vehicle-mounted spraying device for plant protection liquid or the like - Tili ett fordon anslutbar besprutningsanord-Ning för växtskyddsvätska eller dyl.

The present invention relates to a vehicle-connectable spraying device for a plant protection liquid or the like, comprising a water tank, an active substance tank and nozzles mounted on spraying arms, from which a mixture of water and active substance is injected via a distribution valve. directly proportional to the speed of the vehicle.

Spraying devices are used, for example, for plant protection, in which case the plant protection liquid is mixed with the water to be sprayed before spraying. Fluids of this kind have detrimental properties to spray equipment. Liquids contain corrosive substances, in which case the parts in contact with the liquid in the device must be made of a non-corrosive substance. These parts significantly increase the price of the device.

61 985

The lifts 11 are also such that they easily block the ducts in the valves, piping and nozzles if they remain standing in the device for some time.

An injection device such as that mentioned at the outset is already known from British Patent Publication 1,202,196, according to which the active substance pump is actuated by the power take-off of the tractor. However, this movement is not directly proportional to the forward speed of the tractor, which means that the active substance is not evenly applied to the field. According to the patent publication, it is also possible to use an active substance pump with a separate land wheel. In this case, the active substance is in principle evenly distributed, but in practice the unevenness of the field surface causes variations. According to the British patent publication, however, the advantage is obtained that no corrosive active ingredients enter the water tank or the accessories directly connected to it, so that the water tank and the parts only in contact with water can be made of considerably cheaper materials. Clogging is also not possible, as the piping and nozzles can be rinsed clean with water after the spraying has been stopped by first closing the active substance supply. Since the active substance is added to the water by an active substance pump11a, the capacity of which is in principle directly proportional to the speed of the vehicle, there is not too much active substance during decelerations or stops.

Admittedly, the water supply can be constant because it is not harmful to the vegetation.

The object of the present invention is to provide a new type of spraying device. The invention is characterized in that the active substance pump is connected to the drive wheel of the vehicle by means of intermediate members. Thus, with a simple solution, the injection capacity of the active ingredient is directly proportional to the speed of movement. The vehicle's robust and large-area impeller is virtually unaffected by field irregularities. The intermediate members may consist, for example, of mechanical members, such as a friction gear resting on the vehicle's drive wheel, which is an active substance pump connected by a gear drive.

The invention will now be described, by way of example, with reference to the accompanying drawing, in which "61985

Fig. 1 shows an injection 1 fence according to the invention mounted on a tractor.

Fig. 2 shows a schematic view of an injection device according to the invention.

The spraying device consists of a water tank 2 attached to the tractor 1, a fuel tank 3 and spray arms 4 with spray nozzles 5. The fuel tank 3 is connected to a distribution valve 7 in the line 6 coming from the water tank via a fuel pump. The active substance pump 8 is connected to the vehicle drive wheel 10 by means of intermediate elements 9, so that the capacity of the pump is directly proportional to the speed of movement. The line 6 coming from the water tank 2 has a separate pump 11 for pumping water, by means of which the water is fed to the distribution valve 7.

In the device according to the invention, the water tank 2 with its associated members 6, 11 form its own unit and the active substance tank 3 with its associated members 8, 9, 10 form their own unit connected to the same distribution valve 7, where water and active ingredient mix and flow through area.

By means of the invention, the water storage unit can be made of materials for which the water resistance is sufficient. The devices associated with the active ingredient tank unit can be made of better materials that are not damaged by corrosive active ingredients.

Since the active ingredient is added to the water by means of an active ingredient pump 8, the capacity of which is directly proportional to the speed of the vehicle 1, there is no excessive active ingredient in the area to be injected during decelerations or stops.

It will be apparent to those skilled in the art that various embodiments of the invention may vary within the scope of the claims set forth below. Thus, the intermediate members and their operation can be solved in any way known per se mechanically, hydraulically or electrically.

It is also clear that the capacity of the water pump 11 can also be arranged directly up to the speed if it is desired to save water.