Direct-injection spraying device for a vehicle, in particular an agricultural vehicle, and vehicle provided with such a device

Patent metadata

Field	Value
Publication number	US-9795125-B2
Application number	US-201313752683-A
Country	US
Kind code	B2
Filing date	Jan 29, 2013
Priority date	Jul 29, 2010
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

The direct-injection spraying device, in particular for an agricultural vehicle, according to the invention includes a main tank, at least one spray boom, and a circuit connecting the tank to the boom. comprises:
The circuit includes a main pump and a bypass for controlling the flow rate in the boom in accordance with the traveling speed of the vehicle.
At least one active substance store is connected to the circuit by a metering pump.
The device further includes a cyclone mixer capable of receiving, as input, the liquid from the main tank, and the pressurized liquids coming from the active substance store, and capable of eliminating the boom as output.

First claim

The invention claimed is:

1. A direct-injection spraying device, in particular for an agricultural vehicle, comprising:
a main tank,
at least one spray boom,
at least one active substance store,
a cyclone mixer whereof a first portion comprises at least first and second substantially tangential inlet ports, and whereof a second portion comprises an outlet port,
and a fluid circuit comprising:
a main pump disposed upstream of the cyclone mixer,
at least one inlet duct connecting said tank to said first port,
at least one bypass controlling a flow rate in said boom in accordance with a traveling speed of said vehicle, the bypass being connected to a regulating valve inserted between the main pump and the first inlet port and being disposed upstream of the cyclone mixer, wherein the regulating valve is a three-way valve connected to the at least one spray boom,
at least one metering pump inserted between said store of active substance and said second port, and
at least one outlet duct connecting said outlet port to said boom,
the device further comprising at least one timing means for timing the spraying so as to ensure a propagation of the new dose to the entire circuit before spraying, and
three metering pumps that communicate with said second port and wherein said second port is offset downstream from said first inlet port, and protrudes into the cyclone mixer.

2. The device according to claim 1 , further comprising a circulation return for returning the liquid in the boom toward the mixer, and wherein the mixer also includes a third inlet port capable of receiving the pressurized liquid coming from that return.

3. The device according to claim 1 , wherein it can operate according to at least two speed ranges:
a relatively slow range, in which the flow rate of the active substance coming from the active substance store is reduced relative to the liquid flow rate coming from the main tank, and
a relatively fast range, in which the flow rate of active substance coming from the active substance store is increased relative to the flow rate of liquid coming from the main tank.

4. The device according to claim 1 , further comprising a plurality of active substance stores connected to the second port by respective metering pumps.

5. The device according to claim 1 , wherein the tank is associated with a flow meter measuring a quantity of liquid sucked from the main tank and capable of allowing the metering pumps to be driven accordingly.

6. The device according to claim 1 , wherein the at least one timing means for timing the spraying is activated in particular upon a change in the metering by the metering pumps.

7. The device according to claim 1 , wherein the main pump is inserted between the main tank and the first inlet port.

8. The device according to claim 1 , wherein the outlet port of said mixer is oriented in a substantially coaxial direction substantially parallel to a longitudinal axis of the mixer.

9. The device according to claim 1 , wherein said mixer assumes a shape comprising at least one of cylinders, cones and spheres.

10. The device according to claim 1 , wherein said mixer comprises at least one inner lip arranged between its first and second portions.

11. The device according to claim 1 , wherein said mixer comprises baffles or inner flaps able to favor rapid homogenization of various entering liquids.

12. An agricultural vehicle, comprising a spraying device according to claim 1 .

13. The device according to claim 1 , wherein the bottom of the main tank communicates with a main rinse valve.

14. The device according to claim 13 , wherein the main rinse valve communicates with the main pump and the main pump communicates with the first inlet port.

Assignees

• Exel Ind

Inventors

• Ballu Patrick Jean Marie

Classifications

• A01M7/005 Primary

  Special arrangements or adaptations of the spraying or distributing parts, e.g. adaptations or mounting of the spray booms, mounting of the nozzles, protection shields (nozzles, spray heads or other outlets B05B1/00; spray pistols B05B9/01) · CPC title

• A01M7/0092 Primary

  Adding active material (used as well for the introduction of fertilisers in water A01C23/042) · CPC title