Abstract: The invention concerns a rotary nozzle combination (P) for coating product comprising an atomizing bowl (3) and a rotor (11) adapted to rotate the bowl about a geometrical axis (X-X?), and means (4, 5, 6, 7) for controlling the presence and/or proper mounting of the bowl (3) on the rotor (11). The rotor (11) is spaced apart from a non-rotating part (P1) and the control means comprise first means (4, 5) enabling a force (F3) to be applied on the bowl (3) tending to vary the thickness of an air-film of the pneumatic thrust bearing (P1), as well as second means (7, 8) for determining the air pressure in the bearing (P1). The pressure of air in the thrust bearing (P1) can be determined when the latter is normally supplied and compared with at least one reference value.

Abstract: The ventilation system for a cab (1) of an agricultural machine involved in spraying operations comprises; at least one outside air intake (7); at least one air outlet (29) opening out into said cab (1); means (14) for causing air coming from said outside air intake (7) to flow towards said air outlet (29); means (11) for selectively closing said outside air intake, referred to as first closure means; and means (21, 23) for controlling the spraying function. The first closure means (11) are slaved to said control means (21, 23) in such a manner that activating and deactivating the spraying function lead respectively to said air intake (7) being closed and opened by said first closure means (11).

Abstract: The invention relates to a sprayer (1), comprising a pneumatic turbine (5), capable of rotating a bowl (6), the turbine being connected to a pressurized gas supply line (11), for driving said turbine and to a drive gas exhaust line (12). The exhaust line (12) is equipped with an inner sleeve (13) which defines the exhaust gas flow volume (V13), an annular gap (E) with a non-zero thickness being provided between the outer surface of the sleeve (13) and the inner surface of the line (12). The structure is compatible with a temperature gradient between the optionally low-temperature exhaust gas flow volume (V13) and the material (2) which forms the exhaust line (12), the risk of condensation being thus limited.

Abstract: A system for continuously metering and transporting a powder comprises means (104-107) for fluidizing (F2) the powder in a closed reservoir (4), a tube (110) dipping into the fluidized powder (L4) and discharging (110B) to the outside of the reservoir (4), and means (S2, C2) for pressurizing the reservoir. The system further comprises supply means (C3) for continuously supplying pressurizing gas from the reservoir (4) to a chamber (V6) for mixing the gas with fluidized powder leaving the tube (110), said supply means (C3) being equipped with or constituting a constriction (R3) to the flow of the pressurizing gas. A hose (7) for transporting the powder mixed with the pressurizing gas is connected to the downstream end of the mixing chamber (V6).

Abstract: The invention relates to a valve (1), comprising a body (2), within which a needle (3) moves, which can rest with sealing against a seat (23), fixed to the body (2). Said needle (3) is magnetically coupled to an actuator body (5), across a closed and a magnetic chamber (4) provided with several magnets (52) between which magnetic bodies (53) are interspersed. The needle (3) has no magnets and is provided with ribs (36) made from a magnetic material. According to the invention, an improved magnetic coupling may be achieved, whereby the thickness and the relative separation of the ribs (36) are largely equal to the thickness (e53) and the relative separation (l52) of the magnetic bodies (53).

Abstract: The bowl according to the invention is equipped with first magnetic coupling means adapted to cooperate with second complementary magnetic coupling means fixed on a non-rotary part of a sprayer, these first and second coupling means being adapted to exert an at least partially axial effort inducing the coupling in rotation of the bowl with a corresponding drive member. The radial width of an annular or truncated surface defined by the first coupling means is greater than the total radial width of the coupling means borne by the non-rotary part.

Abstract: An installation includes spray nozzles (1) connected to a pressurized extinguishing liquid supply line (3). Fire detecting elements are connected to elements controlling the supply of the nozzles. The installation comprises a compressed gas container (6) connected by a pipe (5) to a tank (4) containing the liquid and which itself is connected to the supply line (3). The conduit (5) is normally closed by a valve (7) with controlled opening so as to enable compressed gas contained in the container to penetrate into the tank to evacuate the liquid towards the supply line of the nozzles. The nozzles are associated with respective electrically driven fans (9) arranged in series so that an electrically driven fan located downstream of an upstream electrically driven fan sucks in the larger volume between the downstream and upstream electrically driven fans.

Abstract: The installation according to the invention comprises at least one robot of which a mobile part supports at least one sprayer and a tank of coating product connected thereto for feeding the sprayer. The robot bears a second tank adapted to be filled with cleaning product, this second tank being connected to feed cleaning product to the tank of coating product, the sprayer and/or the conduits connecting the first tank to the sprayer. The first tank, the sprayer and/or the conduits can be cleaned in masked time.

Abstract: An installation includes spray nozzles (1) connected to a pressurized extinguishing liquid supply line (3). Fire detecting elements are connected to elements controlling the supply of the nozzles. The installation comprises a compressed gas container (6) connected by a pipe (5) to a tank (4) containing the liquid and which itself is connected to the supply line (3). The conduit (5) is normally closed by a valve (7) with controlled opening so as to enable compressed gas contained in the container to penetrate into the tank to evacuate the liquid towards the supply line of the nozzles. The nozzles are associated with respective electrically driven fans (9) arranged in series so that an electrically driven fan located downstream of an upstream electrically driven fan sucks in the larger volume between the downstream and upstream electrically driven fans.

Abstract: A device for spraying a liquid coating product includes a hub forming or accommodating a liquid feed pipe and a divergent centrifugal deflector having a distribution surface whose overall shape is that of a trumpet bell. Applications include electrostatic painting.

Abstract: A device for spraying a liquid coating product includes a hub forming or accommodating a liquid feed pipe and a divergent centrifugal deflector having a distribution surface whose overall shape is that of a trumpet bell. Applications include electrostatic painting.

Abstract: The installation according to the invention comprises at least one robot of which a mobile part supports at least one sprayer and a tank of coating product connected thereto for feeding the sprayer. The robot bears a second tank adapted to be filled with cleaning product, this second tank being connected to feed cleaning product to the tank of coating product, the sprayer and/or the conduits connecting the first tank to the sprayer.

Abstract: A gun for spraying a product such as paint supplied under constant pressure to the gun, includes a structure for the pulsed spraying of the product that includes a nozzle and an oscillating membrane associated with an intermittent closure device for supplying the product toward the nozzle. A control for the pulsed spray structure of the product is provided. A closure mechanism with a plunger is secured to the membrane and passes through the membrane to be connected to the control.

Abstract: A device for laying dust contained in a flow of bulk product during transfer thereof includes a divergent cone onto whose outside surface the product is directed from a feed pipe to form a tubular layer of product. A mounting device holds the cone in the flow of product leaving the feed pipe and at least one device fixed to the mounting device sprays a moistening liquid to moisten the inside envelope of the layer of product. The spray device has at least one central nozzle in a spray moistening area downstream of the cone to moisten the part of the inside envelope of the product layer downstream of the cone. The structure of the device is such that the thickness of the tubular layer of the flow of product can be freely chosen at least until the flow leaves the area, the layer thereafter retaining its hollow annular shape. Applications include laying dust contained in grain when it is transferred into cells of a storage silo.

Abstract: A filling apparatus comprising a device (4) for connection to a source of water under pressure and a nonreturn valve (7) placed in fluid communication with the device (4) and mounted to allow passage from the source toward the reservoir (2), a calibrated valve (7) mounted between the nonreturn valve (7) and the reservoir (2) in the passage of water entering the reservoir (2), this valve (10) being sensitive to the pressure established in the reservoir (2) so as to cut off the water supply to the reservoir (2) when this pressure reaches a predetermined value.

Abstract: A nozzle for spraying liquids includes a body pierced with a bore, preferably a cylindrical or cylindro-conical bore, and carrying an endpiece pierced with an orifice which may be frustoconical flowing out towards the outside or dihedral opening out towards the outside, this orifice being coaxial with a preferably hemispherical swirl chamber and opening out into the latter via a narrow passage. The endpiece is made from an elastically deformable material, and a restraining component, carried by the body and able to move with respect to the endpiece, acts on the endpiece in order to adjust the cross-section and/or the shape of the the orifice without substantially deforming the swirl chamber.

Abstract: Device for spraying liquids comprising a body (1A, 1B) having an inlet passage (2) which can be connected to a feed line (2); a chamber (3) provided in the body and communicating with the inlet passage; an outlet passage (8) which communicates with the chamber (3); a bearing surface surrounding the body portion which contains the chamber (3) and in which the outlet passage emerges; and a nozzle-carrier component (12) mounted rotatably on the bearing surface, carrying at least two nozzles (13) and having orifices disposed in order to place a specific nozzle in communication with the said outlet passage for a suitable position of the said nozzle-carrier component.

Abstract: The invention relates to a device for the rinsing of containers, particularly small-size containers of plant-protective or toxic products.The same assembly comprises a rinsing liquid inlet, a channel directed upwards which can penetrate into the container to be rinsed, introduced with the opening downwards, and an ejector fed by a branch from the rinsing liquid supply and capable of removing the draining liquid collected in a funnel surrounding the channel. Preferably, the positioning of the container controls, via a pushing device, the supply of liquid to the channel.

Abstract: This invention relates to a device for treatment of culture by moistening. This device comprises at least one practically horizontal tubular tank (3) having a slit (4) in which are clamped the upper ends (2) of flexible capillary wicks (1) adapted for resting on the vegetation. This tank (3) is intermittently fed with a pressurized liquid, such as a weed-killer. According to the invention, each inlet (5) through which pressurized liquid is intermittently fed to a tank (3) is provided with a calibrated orifice (6) acting as an atomizer for spraying liquid into the tank. Preferably, a ball valve (7) biased by a spring (9) against its seat (8) is provided for preventing the liquid from dripping into the tank (3) during interruptions of pressure. In case the upper ends (2) of the wicks (1) are so tightly clamped in the slit (4) of the tank that capillary flow would be impeded, a row of orifices (10) is provided along an edge of the slit (4 ) for allowing liquid to seep onto the wicks (1).