NEW MICRO SPRAY BACKPACK WITH INDEPENDENT MIXTURE SYSTEM THROUGH REMOVABLE CARTRIDGE

Abstract

A system for micro spray backpacks is a reusable device which has at least one cartridge that contains at least one agrochemical element or another type of concentrate which is to be dispensed separately from the dilution, performing this task at the very moment at which its application is required. The device contemplates the adjustment in the concentration of the mix, as well as the change of the cartridges without spilling the solvent contained in the tank of the backpack. The cartridge prevents oxidation of the concentrate which is to be applied due to its being isolated, reducing economic and environmental costs. The device is designed for use in agricultural and industrial sectors.

Claims

1-6. (canceled)

7. A micro spray backpack of those used in the industrial and agricultural sectors for spraying using pressurisation systems, both manual and assisted by an electromechanical pump comprising: means to perform an adjustable mix of the solvent contained in a tank of the backpack with at least one substance of a treatment to be applied, performing this solution or mixture at the time of application and without the treatment substances coming into contact with a content of the backpack tank until that time, the means include at least one airtight cartridge preferably cylindrical which contains the substances to be diluted and dispensed which has a conventional connection means with at lease one cartridge receiving unit; the top cover of the cartridge forms a plunger which slides inside a side revolution surface of the same and has means to guarantee its airtightness through the use of conventional O-rings or tight fit, wherein the cartridge is emptied towards the cartridge receiving unit housed in the backpack which spills the content of these substances into a common collector that has an entry through which the pressurised fluid penetrates from the tank and the outflow of which spills directly towards the spray lance, wherein the cartridge receiving unit has at least one conventional opening or adjusting valve that allows for the person using the backpack to adjust the mixture; and the common collector has a mixer to facilitate the integration of the mix.

8. The micro spray backpack according to claim 7, wherein the cartridge housing includes convention means for compressing the plunger of the cartridge, such as the incorporation of a spring that exerts direct pressure on the plunger of the cartridge.

9. The micro spray backpack according to claim 7, wherein the cartridges have the means to allow the deformation and volume reduction of the same when it is being emptied, due to the cartridge being made of an elastomer material preferably of low thickness.

10. The micro spray backpack according to claim 7, wherein the cartridges have an elastic membrane capable of dilating due to the pressure and recovering its initial shape upon opening the cartridge valve.

8. The micro spray backpack according to claim 7, wherein the cartridge connection means being made up by a membrane made using an elastomer material, the elasticity of which allows to close and seal this temporary opening caused by at least one connection needle which communicates with a cartridge receiving unit.

8. The micro spray backpack according to claim 7, wherein the cartridge connection means being made up by a set of male and female conventional quick connectors, positioned indistinctly between the cartridge pair and the cartridge receiving unit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] For better understanding the description contained in this report, it is accompanied by some drawings which, by way of example but not limited to, represent a list of the figure of the device components.

[0018] FIG. 1 represents a spray backpack which includes: [0019] 1. Spray lance [0020] 2. Connection hose of the spray lance [0021] 3. Backpack tank [0022] 4. Actuating level [0023] 5. Pressure group of the backpack [0024] 6. Solvent tank cap [0025] 7. Cartridge housing [0026] 8. Cartridge housing cover [0027] 10. Cartridge receivers [0028] 11. Cartridge [0029] 14. Connection needle

[0030] FIG. 2 represents a cartridge being inserted in the cartridge housing [0031] 7. Cartridge housing [0032] 8. Cartridge housing cover [0033] 9. Cartridge housing spring [0034] 11. Cartridge [0035] 12. Cartridge cap [0036] 13. Cartridge connection membrane [0037] 14. Connection needle

[0038] FIG. 3 represents the cartridge already inserted in the cavity in the cartridge housing, with its cap closed, with the connection needle connected and the spring in compression. Where the following can be seen: [0039] 7. Cartridge housing [0040] 8. Cartridge housing cover [0041] 9. Cartridge housing spring [0042] 11. Cartridge [0043] 12. Cartridge cap [0044] 13. Cartridge connection membrane [0045] 14. Connection needle

[0046] FIG. 4 represents a detailed diagram of the cartridge receiver element 10, in this case exemplified with three cartridges, where: [0047] 2. Connection hose of the spray lance [0048] 10. Cartridge receiver [0049] 11. Cartridges [0050] 13. Cartridge connection membrane [0051] 14. Connection needle [0052] 15. Male quick connector [0053] 16. Female quick connector [0054] 17. Adjustment valves [0055] 18. Collector [0056] 19. Water or solvent inflow [0057] 20. Collector joint to hose outflow [0058] 21. Static mixer

DESCRIPTION OF A PREFERRED IMPLEMENTATION MODE

[0059] Citing, by way of example, a preferred implementation mode, in which the materials used for manufacturing the new micro spray backpack with independent mixture system through removable cartridge presented in this report is independent of the purpose of the invention, as are all the accessories that may be presented, provided they do not affect its essential nature.

[0060] The backpack has the means to house in an isolated manner with regard to the solvent which is located in the tank (3) FIG. 1, the agents to be dispensed, these means comprise at least one cartridge (11) which houses the concentrated agent, which can be a pesticide or any other substance. The cartridges with preferably be cylindrical and comprise, at their lower base, an interconnection valve with the reciprocal cartridge receiver (10) which allows the flow of fluid when they are interconnected and which has the means to avoid any spill when the cartridge is removed. These means are materialised in the form of a pierceable membrane (13) made using elastomer material, the elasticity of which allows to close and seal this temporary opening caused by the connection needle (14) of the cartridge receiver. The top cover of the cartridge (12) forms a plunger that slides inside the side revolution surface of the same and has the means to guarantee its airtightness through the use of conventional O-rings, this movement of the plunger allows to empty the cartridge. It has a spring (9) which puts pressure on the top cap to facilitate the discharge of the substance to be dispensed.

[0061] The cartridge receiver (10) comprises at least one conventional adjustment valve (17) per cartridge, which adjust the flow of fluid entering into the collector (18) where it is mixed with the water or solvent from the tank that flows under pressure through its entry (19) into the static mixer (21) located inside the collector, the function of which is to receive and mix the substances to be applied by means of fixed structures that produce variations within the fluid contributing to its integration with the solvent. Subsequently the mixture leaves the collector via the outflow point (20) towards the hose (2) and its corresponding spray lance (1) ready to be dispensed.

[0062] For better understanding of the invention its use is described, such as the application of a fertiliser, the user introduces at least one cartridge (11) with the concentrate inside a complementary cavity for housing the cartridges (7), this cavity may have a cover (8) to guarantee the cartridge is secured. The lower end of the cavity coincides with at least one cartridge receiver (10) in such a way that when a cartridge is inserted, thanks to its connection, by means of the membrane (13) and needle (14) cooperation, allows for the content to flow towards the collector (18) as described. This configuration as described allows for the simultaneous use of several cartridges offering the possibility of preparing different mixes depending on the requirements of the person applying the treatment.

[0063] The pressurisation of the fluid contained in the tank is carried out by conventional means such as the user actuating a set of levers (4) which operate the pressure group of the backpack (5) located on the tank. The tank comes with the corresponding filling and spill cap (6).