ES2827230A1 - PORTABLE MANUALLY OPERATED SPRAYER (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Manually operated portable duster, comprising a vertical cylinder (2) that houses a powder and inside which there is a piston (4) with free longitudinal movement; a screen (7) arranged at a lower end of the vertical cylinder; and a horizontal cylinder (10) connected to said vertical cylinder at its lower end, comprising a narrowing at one of its ends, in which there is an outlet (11) for pulverized powder. Through the longitudinal movement of the vertical cylinder (2), the movement of the piston (4) is caused within the cylinder, which forces the passage of the powder through the sieve (7) to the horizontal cylinder (10) and through said cylinder to the outlet (11). (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

PORTABLE MANUALLY OPERATED SPRAYER

OBJECT OF THE INVENTION

The present invention relates to a dusting of any fungicidal or insecticidal powder of the type used to combat pests on crops or plants (such as sulfur). That is, it is not designed to be used with herbicides to kill weeds, which are usually products diluted in water. The technical field of the present invention is that of agricultural and forestry technologies, and more specifically it refers to agricultural machinery.

The key to the proposed duster is that the powder to be dispersed is not in an additional container (such as a backpack) but is in the duster itself.

BACKGROUND OF THE INVENTION

There are numerous patents related to dusts or sulfur agents, most of them old, intended for dusting powder.

Document ES0105087U is a utility model that describes a portable, manually operated sulfur duster. For its operation it is essential that it includes a bellows. The tank where the powder is introduced is a backpack.

Document ES0152940A1 consists of the improvement of a sulfur by incorporating an agitator to break up the lumps that sulfur forms and avoid having to break them previously.

Document ES0221864A3 proposes an automatic dosing apparatus for powdery substances and defines an apparatus for dosing substances in very small doses with a specific use for medicine. Dosing occurs by rotating a hopper.

Document ES0333594A3 consists of a patent that improves a large sulfur machine that, for its operation, must preferably be coupled to a tractor, being driven by it by means of an articulated transmission shaft. Its size makes it unfeasible that it can be handled by a person manually.

Document ES2067353A2 describes a device for dosing powders. For its operation, it requires the presence of a spreader disk driven by a worm screw.

GB2380955A consists of a dry powder disperser and associated method of use, which does not use pressurized air to disperse the powder particles.

Document US20170095782A1 consists of powder mixing apparatus and methods by de-agglomeration or reduction of powder agglomerates. To do this, an air flow is collided that impacts on the powder.

Document US4596497A consists of a device that requires the existence of a high speed air flow to be able to cover the outer circumference of the nozzle discharge port.

The dusters or hand-held sulfur agents on the market are either very small, so they have a very reduced autonomy, or they have mechanical help, to treat large areas. Another disadvantage they present is that it is necessary to use both hands for handling.

DESCRIPTION OF THE INVENTION

The object of the present invention is a manually operated portable duster. The main advantages of such a duster are that the powder to be dispersed is not in a backpack or other attached container, but is introduced into the duster itself, and that it can be used with just one hand.

This represents a great difference with respect to known solutions for which use it is necessary to have a backpack or other attached container in which to store the powder, and it is necessary to use both hands of the user. These advantages are obtained thanks to its small size and the design of the mechanism inside.

With the present invention, a single person can apply the powder to the underside of the leaves, where there is a higher concentration of pathogens. In addition, thanks to its design, access to the underside of the leaves is done without the user having to bend down or adopt poor ergonomic postures.

The duster comprises a vertical cylinder in which the powder to be sprayed is housed and connected, preferably by means of an elbow and a reducing piece, to a horizontal cylinder with a slotted outlet through which said powder exits.

The vertical cylinder has a piston inside. When moving the duster up and down (any movement with at least one component in its longitudinal direction would be valid, that is, it does not have to be a purely vertical movement), the piston moves inside it, driving the powder and undoing possible lumps. Preferably, the piston comprises holes, which can be lateral, and which improve the movement of the powder so that it is not caked. In a possible embodiment, the piston comprises a vertical projection in its center to prevent its overturning inside the vertical cylinder.

In a possible embodiment, the duster comprises a handle, preferably on the vertical cylinder, which facilitates its operation, handling and transport. This vertical cylinder has a diameter that can preferably be between 80 and 120 mm. In a preferred embodiment, it has a storage capacity of 1 kg of powder.

At the lower end of the vertical cylinder there is a sieve that allows the dust to be sifted so that no lumps pass through, guaranteeing a uniform dosage of the powder.

The horizontal cylinder has a narrowing at its free end (reduces its diameter) so that the exit speed increases, until it becomes a narrow horizontal opening (slot) that is the exit nozzle. The grooved shape of the outlet increases the dispersion capacity. Another great advantage of this narrowing of the horizontal cylinder until the exit is that it allows reaching the lower part of the leaves of the plants, an important characteristic since this is the area where there is usually the highest concentration of pathogens.

The pulverized product is kept in suspension long enough on the area to be treated until the dust particles cover all the vegetation.

Thus, with the present invention, the possible lumps that the dust may form (for example sulfur) are dissolved by the combined action of the piston and the sieve, so it is not necessary to previously undo them. In this case, the spraying is carried out by a linear movement of the piston inside the vertical cylinder and an air pressure is necessary to allow the powder to be sprayed.

BRIEF DESCRIPTION OF THE FIGURES

In order to help a better understanding of the characteristics of the invention, according to a preferred example of a practical embodiment thereof, a series of drawings is provided as an integral part of said description, where, with an illustrative and non-limiting nature, it has been provided represented the following:

Figure 1 represents a side view of the manually operated portable duster.

Figure 2 represents a sectional view of the manually operated portable duster.

Figure 3 shows a front view of the manually operated portable duster.

Figure 4 shows a perspective view of the piston.

Below is a list of the different elements represented in the figures that make up the invention:

1. Handle

2. Vertical cylinder

3. Dust

4. Piston

5. Vertical projection

6. Orifices

7. Sieve

8. Elbow

9. Reducer piece

10. Horizontal cylinder

11. Departure

DETAILED DESCRIPTION

A preferred embodiment of the invention has been represented in the figures provided. The manual duster is conceived for the drive of powder and its application in the treatment of the elimination of parasites that cause diseases or damage to plants.

As can be seen in figure 1, the duster comprises a vertical cylinder (2), which may comprise a handle (1) to facilitate the handling of the duster and its transport, and a horizontal cylinder (10) connected to the vertical cylinder (2 ) and comprising an outlet (11) for the powder. In an embodiment such as the one shown, the vertical cylinder (2) and the horizontal cylinder (10) are connected by an elbow (8) and a reducing piece (9), which can be a truncated cone. Preferably the diameter of the vertical cylinder (2) is greater than the diameter of the horizontal cylinder (10). As the horizontal cylinder (10) has a smaller diameter, the air drive is increased.

The vertical cylinder (2) is configured to receive the powder (3), as shown in figure 2, so no additional elements are necessary (such as a backpack or a storage tank) in which to place the powder. (3) to be sprayed. In other words, the vertical cylinder (2), in addition to being part of the mechanism itself, is the deposit of the fungicidal powder (3).

To achieve the movement of the powder (3) and its movement to the outlet (11), the duster comprises a piston (4) that moves freely in a vertical direction along the vertical cylinder (2) when it moves, with a movement with at least one component in its longitudinal direction. The movement of the piston (4) forces the movement of the powder (3) to the outlet (11) through the horizontal cylinder (10), previously passing through the sieve (7) arranged at the end of the vertical cylinder (2).

In the section shown in figure 2 said screen (7) can be seen arranged at the lower end of the vertical cylinder (2). This sieve (7) prevents lumps in the dust (3)

Preferably the outlet (11) is a slot, as can be seen in figure 3.

In another embodiment, shown in figure 4, the piston (4) comprises a vertical projection (5) to prevent its overturning inside the vertical cylinder (2). In a preferred embodiment, the vertical projection (5) is arranged in the center of the piston. Also preferably, the piston (4) comprises holes (6), preferably in its side walls, which facilitate the passage of the powder, avoiding its caking.

Claims (7)

1.- Manually operated portable duster, characterized in that it comprises: - a vertical cylinder (2) configured to house a powder (3) to be sprayed; - a screen (7) arranged at a lower end of the vertical cylinder (2); -a horizontal cylinder (10), connected to said vertical cylinder (2) at its lower end, and comprising a narrowing at one of its ends, in which there is a slotted outlet (11) through which the pulverized powder (3) comes out; and inside the vertical cylinder (2) there is a piston (4) that moves freely along said vertical cylinder (2) when said vertical cylinder (2) moves with a movement with at least one component in its longitudinal direction, forcing the movement of the powder (3) through the screen (7) to the horizontal cylinder (10) and through said horizontal cylinder (10) to the outlet (11). 2. Manually operated portable duster according to claim 1 in which the piston (4) comprises a plurality of side holes (6). 3. - Manually operated portable duster according to any one of the preceding claims in which the piston (4) comprises a vertical projection (5) configured to prevent rotation of the piston (4) on itself inside the vertical cylinder (2 ). 4. - Manually operated portable duster according to any one of the preceding claims in which the diameter of the horizontal cylinder (10) is smaller than the diameter of the vertical cylinder (2). 5. - Manually operated portable duster according to any one of the preceding claims in which the vertical cylinder (2) and the horizontal cylinder (10) are connected through an elbow (8), directly connected to the vertical cylinder (2) , and a reducing piece (9), connected to said elbow (8) and to the horizontal cylinder (10). 6. - Manually operated portable duster according to claim 5 in which the reducing piece (9) is a truncated cone. 7. Manually operated portable duster according to any one of the preceding claims comprising a handle (1) on the vertical cylinder (2) configured to facilitate the gripping of the duster and its manual operation.