FR2725875A1 - Mobile machine for gassing burrowing animals - Google Patents

Abstract

The mobile gas generator consists of a blower (1), driven by a motor (2), mounted on a wheeled chassis. The blower produces a gas flow from the primary gas supply produced from a burner (7), mounted upstream of the blower. The gas is fed through a pipe (3) and a nozzle into a mixing tank (4), where the exhaust gas (9) and the supplementary gas held in the storage bottle (8) are combined. An opening (18) allows the introduction of liquids and/or other toxic products into the mixing tank. The flow of gas is then led from the mixing tank through the required pipes (5), fitted with nozzles (6) and fed into the galleries or runs of the burrowing animals.

Description

 The burrowed animals, by their presence and their way of life, pose more and more problems to the people using the surfaces where they are deployed to find their food, their lodging, their place of reproduction.

 These animals become harmful from the moment they thwart the exploitation of the premises, by digging galleries, burrows, by rejecting on the surface the surplus of earth.

 The places used: gardens, vegetable gardens, lawns but also golf courses, airfields, highways, dikes, etc.

 The animals concerned: moles, brown rats, rats, rodents and other burrowing animals.

 The processes used to date are difficult to use, expensive and not very active, others are dangerous for the user or for the fauna to be protected.

 The present invention remedies these drawbacks by using the action of a propellant turbine and distributing in the galleries or burrows, and over a very large area, a toxic, heavy, low-volatile gas, without risking contaminating the treated animals or surrounding.

 The invention is a mobile and autonomous device, generator, propellant and earth distributor, of a mixture of toxic gases with a view to destroying or repelling burrowing noxious animals in their galleries or burrows.

 This invention allows, indifferently, the use of liquid, solid or gaseous products, to obtain the desired treatment gas.

 According to the invention, the apparatus consists of a motor actuating a turbine which can be placed in communication with a burner producing heavy toxic gas.

 Another characteristic of the invention, this heavy toxic gas flow is conveyed from the turbine to a mixing tank by a nozzle on which it is possible to connect on the one hand, a pipe connected to a gas bottle, on the other hand, a tube recovering the combustion gases from the engine.

 The special feature of the mixer consists of a tank where the flow of gas propelled by the turbine is brought by an inlet pipe immersed in a volatile liquid, previously poured into the tank, and allowing the bubbling and the higher gas flow.

 At the outlet of the mixing tank, the heavy toxic gas is conveyed under pressure by several flexible tubes in the galleries or burrows created by the pests to be destroyed.

 An embodiment of the object of the invention is shown by way of example, without limitation to the attached detailed drawings.

 Figure 1 is a perspective which shows the entire apparatus consisting of an electric or combustion engine (2) driving a turbine (1) which sucks the gases from the burner (7) (see fig.4). The gases sucked in by the turbine (I) are propelled into the nozzle (3) connected to the mixing tank (4). In the case of a combustion engine (2), the exhaust gases will be recovered (9) and injected into the nozzle (3) (see fig. 6). Compressed gases from the bottle (8) can also be injected into the nozzle (3). The gas flow thus obtained will be directed by the nozzle (3) in the mixing tank (4) (see fig. 3), where a volatile liquid will have been previously poured, bubbling will take place (see fig3). gaseous thus obtained will be directed under pressure into the conduits (5) provided with injectors (6) (see fi.5) thus leading the treatment to the selected galleries or burrows. The assembly is mounted on a support (10) itself fixed in a structure (11) provided with wheels (19) which make the device mobile and autonomous.

 FIG. 2 is an operating diagram showing the path and enrichment of the gas flows in the apparatus and their pressurization by the turbine. The actions of the burner (7), the bottle (8), and the mixing tank (4), can, depending on the desired treatment, be used separately or added up.

 Figure 3 is an axonometry of the mixing tank (4) and its bubbling system connected to the nozzle (3). This bubbling takes place in a volatile liquid allowing a gas exchange. The mixing tank (4) is provided with a filling cap (18).

 Figure 4 shows the burner (7) in axonometry. n is a drawer composed, in the lower part, of a combustion chamber, where the composition to be burned, which is lit beforehand, and in the upper part, with an adjustable opening allowing the entry of the side air open to the outside and a square outlet at the other end. This square outlet is received in a cylinder (15) leading to the suction hole of the turbine (1). The combination of the square section inscribed in a cylindrical section, ensures by the free peripheral spaces thus created, an air passage for regulating the draft and cooling the burner (7).

FIG. 5 is an axonometry representing the injector (6) composed of a spout (17) fitted into the duct (5) and a cone movable along the duct (5), making it possible to seal on the gallery to be treated. A valve fixed upstream on the duct (5) allows the gas to be cut off
FIG. 6 is an axonometry representing the recuperator (9) of the burnt gases at the outlet of the internal combustion engine (2) and reinfected in the nozzle (3). This principle makes it possible to enrich the treatment gases and to eliminate, for the user, the emission of exhaust gases.

Claims (6)

R ICATIONS  1- Mobile and autonomous device, generator, propellant and earth distributor, of a mixture of toxic gases with a view to destroying or repelling burrowing pests in their galleries or burrows, such as moles, brown rats, nutria, characterized by turbine (1), driven by a motor (2), sucking and propelling a gas flow consisting of a first supply of gas produced by a burner (7) of materials to be diffused after ignition located upstream of the turbine (1) then driven by a nozzle (3) in a mixing tank (4) after having recovered, in the case of an internal combustion engine, the exhaust gases (9) and the additional supply of a gas stored in a bottle (8 ), a plug (18) allows the addition of liquids and volatile toxic products in the mixing tank (4) where bubbling takes place, the actions of the burner (7), the gas bottle (8) and the according to the desired treatment, the mixing tank (4) can be em fold separately or add up, the gas flow at the outlet of the mixing tank (1) is directed by conduits (5) fitted with injectors (6) in the galleries or burrows.  2- Apparatus according to claim 1 characterized in that it generates a toxic gas produced by a burner (7) located upstream of the turbine (1).  3- Apparatus according to claim 1 characterized in that the drive is done by an internal combustion engine whose exhaust gases are reinjected into the downstream flow of the turbine (1) at the nozzle (3).  s Apparatus according to claim 1 characterized in that a compressed gas, coming from a bottle (8), is reinjected into the downstream circuit of the turbine (1) at the nozzle (3).  5- Apparatus according to one of claims 1 to 5, characterized in that the flow of toxic gases, obtained at the outlet of the nozzle (3). in a mixing tank (1), where. by bubbling through a volatile and toxic liquid, the flow can be further increased.  6- Apparatus according to one of claims from I to 6, characterized in that it comprises a movable cone (16), which obstructs the gallery to be treated after introduction of the spout (17), mounted on the conduit (5) of process gas outlet  7- Apparatus according to one of claims of the '7, characterized in that the assembly is compact, removable, mobile and autonomous can be fise on a support (10) included in a structure (11) equipped with wheels (19 ), the presence of the motor (2) for self-propelling the assembly.