Dispenser of parasiticidal substance

Abstract

A dispenser of a parasiticidal substance comprises at least one tank (6) containing a parasiticidal substance, said tank (6) opening into a jet device (20) for discharging said parasiticidal substance, said jet device (20) being suitable to be filled with parasiticidal substance and to discharge said parasiticidal substance as a result of a temperature increase.

Description

Technical Field

[0001] This invention relates to a dispenser for killing parasites.

[0002] The dispenser is included in part of a device for controlling mosquitoes and other harmful insects and has a dual function: as an adult killer (for adult insects) and a larvicide (for larvae, especially mosquito larvae), and is therefore both inhibitory and preventative.

[0003] For comfort, because the presence of these insects sometimes makes the use of parks, gardens and outdoor spaces impossible, and for health and hygiene reasons, pest control is necessary in open environments (even urban environments).

[0004] In particular, the demand for large-scale and regular pest control or similar treatments increased in Europe in the early 21st century as mosquitoes from Southeast Asia (the so-called "tiger mosquitoes") continued to emerge. In fact, these mosquitoes are more dangerous than common mosquitoes because they are active during the day, highly aggressive, and can carry pathogens that can transmit allergies or more serious diseases such as encephalitis or even malaria.

[0005] Due to the health and hygiene issues involved, mosquito control has become the responsibility of public agencies, which are constantly seeking effective and efficient systems to implement and to advise citizens. Background Technology

[0006] In assessing the most suitable tools for mosquito control, in addition to effectiveness, key aspects to consider include the necessity of periodic interventions for periodic treatments, the affordability of the solutions employed, and the limitations of such solutions on their environmental impact.

[0007] A common characteristic of existing parasite control treatments of different types is that they must be carried out periodically because mosquito problems recur on a seasonal basis, and they must be repeated multiple times within each seasonal cycle because weather events (such as heavy rain) can impair their effectiveness. This results in operators committing to the activity continuously for a considerable period of time, and consequently incurring substantial costs for public agencies.

[0008] Another problematic aspect of mosquito control is its environmental impact, as private citizens and professional companies often use substances that are harmful to the environment and human health, which are partially "dispersed" in the environment in a way that is neither well targeted nor effective. Summary of the Invention

[0009] Therefore, the purpose of this invention is to eliminate the above-mentioned disadvantages.

[0010] This invention is suitable for this situation and aims to solve the problem of mosquito control in urban environments, where the main breeding grounds for this insect are drainage ditches and large storm drains.

[0011] The present invention achieves the aforementioned objective through a device activated by a temperature change.

[0012] The main advantage of this invention is that it allows for the targeted release of antiparasitic substances in areas where larval concentrations are assumed to be highest, without operator intervention.

[0013] Furthermore, in order to prolong the effectiveness of the invention, it is sufficient to replenish the antiparasitic substance every few months in any case.

[0014] Therefore, considerable savings can be achieved and the potential environmental impact of antiparasitic substances on the environment and humans can be minimized. Attached Figure Description

[0015] Further advantages and features of the invention will become more apparent in the following detailed description with reference to the accompanying drawings, which illustrate exemplary, non-limiting embodiments, wherein:

[0016] Figure 1 The first embodiment of the present invention is illustrated in the three-dimensional assembly diagram;

[0017] Figure 2 Based on the longitudinal cross-sectional three-dimensional diagram Figure 1 The present invention;

[0018] Figure 3 Details of the invention are shown in its operational state;

[0019] Figures 4 to 6 Shown according to the operation sequence Figure 3 Details;

[0020] Figure 7 and 8 An alternative version showing details of the invention in a longitudinal cross-section;

[0021] Figure 9 and 10 The second embodiment of the present invention is shown with reference to the three-dimensional assembly drawing and the longitudinal cross-sectional three-dimensional drawing, respectively;

[0022] Figure 11 The basic version of the invention is shown in longitudinal section. Detailed Implementation

[0023] As can be seen from the figure, the present invention relates to a dispenser for killing parasites.

[0024] The dispenser can be made in various ways, depending on the antiparasitic substance used and its characteristics, such as its expandability due to temperature changes or whether it is a liquid or a solid: in any case, the operation of the dispenser 10 is always caused by an increase in temperature.

[0025] exist Figure 11 The first embodiment is shown, and the embodiment is feasible if the antiparasitic substance can expand significantly.

[0026] This embodiment includes the use of a container 6 containing a parasite-killing substance (preferably liquid, but it can also be solid or gaseous), the container 6 leading to a spraying device 20 for discharging the parasite-killing substance, the spraying device 20 being operated by the expansion of the parasite-killing substance due to temperature rise. It is the change in volume of the parasite-killing substance due to temperature changes that causes the operation of the dispenser 10.

[0027] like Figure 11 As seen in the image, in this case, the spraying device 20 includes a compression chamber 14, which is connected to the tank 6 through an opening 16 and is provided with a blocking device 15 for closing the opening 16. A check valve 13 is located at the lower end 14a of the compression chamber 14, from which the antiparasitic substance is discharged.

[0028] Under the influence of gravity, the compression chamber 14 is gradually filled with antiparasitic material through the opening 16 connecting the tank 6 and the compression chamber 14. When the compression chamber 14 is full, a blocking device 15 blocks the opening 16, thereby interrupting the transmission of the antiparasitic material. In the example shown, the blocking device 15 takes the form of a small ball 15a with a density lower than that of the antiparasitic material. In this case, as the temperature rises, the volume of the antiparasitic material increases and a portion of the antiparasitic material is discharged from the check valve 13. Then, as the temperature decreases and the antiparasitic material occupies less space, the small ball 15a detaches from the opening 16, thereby allowing the compression chamber 14 to be filled again.

[0029] Figure 11 Two control valves 4 oriented in opposite directions are also shown, which connect the tank 6 to the outside in order to prevent negative pressure from forming inside the tank 6 and to keep the tank 6 isolated when it is immersed in water.

[0030] If the antiparasitic substance does not expand significantly, it is necessary to provide the dispenser 10 with a second can 2 placed upstream of the can 6 containing the antiparasitic substance, the second can 2 containing a substance suitable for providing propulsion due to temperature rise.

[0031] In this case, such as Figures 1 to 10As shown, the dispenser 10 includes a second tank 2 containing an expandable fluid and a tank 6 containing an antiparasitic substance. The second tank 2 is provided with a lower orifice 21, a rigid piston 3 that slides within the orifice 21, and a spring 9 adapted to resist the descent of the piston 3 caused by the expansion of the fluid and to facilitate the return upward movement of the piston 3 when the volume of the fluid decreases. The tank 6 containing the antiparasitic substance leads to a spray device 20 for discharging the antiparasitic substance, which is operated by the movement of the piston 3. Since the fluid changes its volume due to temperature variations, these are what cause the operation of the dispenser 10 in this case.

[0032] The accompanying drawings illustrate two different embodiments of the dispenser 10, depending on whether the antiparasitic substance is liquid or solid: in particular, Figures 1 to 8 The first version of Distributor 10 is involved, while Figure 9 and Figure 10 This involves the second version.

[0033] If the tank 6 contains liquid antiparasitic material, the spraying device 20 includes a compression chamber 14 for the antiparasitic material, and a check valve 13 is located at the lower end 14a of the compression chamber 14 from which liquid is discharged. Figures 3 to 6 The sequence shown illustrates how, as the fluid volume increases due to rising temperature, the piston 3 is pushed downwards, moves forward within the compression chamber 14, pulls the sealing ring 11 (which has a predetermined gap relative to the piston 3 in both the radial and axial directions), and causes the antiparasitic liquid to be expelled. Then, as the temperature begins to drop again, the fluid volume decreases and the piston 3 rises again, partially due to the action of the spring 9, creating a space 12 between itself and the sealing ring 11. This space 12 allows the antiparasitic liquid to gradually fill the compression chamber 14, both due to gravity and the resulting decompression.

[0034] Alternatively, such as Figure 7 and 8 As seen in the diagram, the piston 3 includes an internal channel 31 for the passage of the antiparasitic liquid and a sealing device 32 for the channel 31, the sealing device 32 being adapted to prevent the antiparasitic liquid from flowing into the compression chamber 14 during liquid discharge. In the illustrated exemplary embodiment, the sealing device 32 for the channel 31 includes a ball 32a having a density lower than that of the antilarvicidal liquid, the ball 32a having a size that matches the end portion of the channel 31 having a truncated conical hollow portion 31a.

[0035] If container 6 contains solid antiparasitic substances, then in Figure 9 and 10The visible spraying device 20 includes a pepper mill mechanism 30 formed by a grooved conical ring 33, a helical surface 34 coaxial with the conical ring 33, and a perforated grid 35, to break down the antiparasitic material through friction and deposit it on the underlying surface. In this case, the piston 3 includes a threaded portion 3a with threads to mate with a support 36, to which the helical surface 34 is fixed: the longitudinal movement of the piston 3 thereby allows the helical surface 34 to rotate, and the friction of the helical surface 34 against the conical ring 33 causes the antiparasitic material to be broken down.

[0036] In all cases, regardless of the presence of the second can 2, and regardless of whether the antiparasitic substance is liquid or solid, can 6 includes at least one movable portion 61 of a wall adapted to move to allow for filling with the antiparasitic substance. Figure 1 and 9 In the example shown, the movable portion 61 of the wall rests on the elastic element 62 to yield to the pressure of the operator performing the filling and then return to the initial position under the action of the elastic element 62. Even in the presence of a second tank 2, it is appropriate to apply at least one control valve 4 to the tank 6 containing the antiparasitic substance in order to prevent negative pressure from forming inside the tank 6 and to prevent, for example, water from seeping into the interior of the tank 6.

Claims

1. A dispenser for killing parasites, characterized in that, The dispenser includes at least one tank (6) containing parasite-killing material, the tank (6) leading to a spraying device (20) for discharging the parasite-killing material, wherein the spraying device (20) includes a compression chamber (14) communicating with the tank (6) containing the parasite-killing material through an opening (16), the compression chamber (14) being provided with a blocking device (15) for closing the opening (16) and a check valve (13) located at a lower end (14a), wherein the compression chamber (14) is configured to be gradually filled with parasite-killing material by gravity through the opening (16), and, as the temperature rises, the volume of the parasite-killing material increases, causing a portion of the parasite-killing material to be discharged through the check valve (13), and then, as the temperature decreases and the parasite-killing material occupies less space, the blocking device (15) is configured to disengage from the opening (16), thereby allowing the compression chamber (14) to be refilled.

2. The dispenser according to claim 1, characterized in that, The blocking device (15) includes a small ball (15a) having a density lower than that of the antiparasitic substance.

3. The distributor of antiparasitic substances according to claim 1, characterized in that, The dispenser includes a second tank (2) containing expandable fluid, the second tank (2) being positioned upstream of the tank (6) containing the antiparasitic substance and having a lower hole (21), a rigid piston (3) slidable inside the lower hole (21), and a spring (9) adapted to resist the descent of the piston (3) caused by the expansion of the fluid and adapted to facilitate the return rise of the piston (3) so that the spraying device (20) for discharging the antiparasitic substance is operated by the movement of the piston (3).

4. The dispenser according to claim 3, wherein, The parasite-killing substance is a liquid parasite-killing substance.

5. The dispenser according to claim 3, wherein, The can (6) containing the antiparasitic substance contains solid antiparasitic substance, characterized in that the spraying device (20) includes a pepper mill mechanism (30) formed by a grooved conical ring (33), a spiral surface (34) coaxial with the conical ring (33), and a perforated grid (35) to break up the antiparasitic substance by friction and deposit it on the underlying surface.

6. The dispenser according to claim 5, characterized in that, The piston (3) includes a threaded portion (3a) adapted to allow the helical surface (34) to rotate due to the movement of the piston (3), the helical surface (34) being fixed to a support (36) having threads to match the threaded portion (3a) of the piston (3).

7. The dispenser according to claim 1 or 3, characterized in that, The container (6) containing the antiparasitic substance includes at least one movable portion (61) of the wall, which is adapted to move to allow the antiparasitic substance to be filled.

8. The dispenser according to claim 7, characterized in that, The movable portion (61) of the wall rests on the elastic element (62) so that it returns to the closed position of the tank under the action of the elastic element (62).

9. The dispenser according to claim 4, characterized in that, The piston (3) includes an internal channel (31) for the passage of the liquid parasite-killing substance and a sealing device (32) for the internal channel (31), the sealing device (32) being adapted to prevent the liquid parasite-killing substance from flowing into the compression chamber (14) during the discharge of the liquid parasite-killing substance.

10. The dispenser according to claim 9, characterized in that, The closure device (32) for the internal channel (31) includes a ball (32a) having a density lower than that of the larvicidal liquid, the ball (32a) having a size that matches the truncated conical hollow portion (31a) formed in the end extension of the internal channel (31).

11. The dispenser according to claim 3, characterized in that, The dispenser includes a control valve (4) applied to the container (6) containing the antiparasitic substance, the control valve (4) being adapted to prevent negative pressure from being generated inside the container (6) containing the antiparasitic substance.

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