WO2005015992A1 - Mejoras en pulverizadores de bajo volumen - Google Patents
Mejoras en pulverizadores de bajo volumen Download PDFInfo
- Publication number
- WO2005015992A1 WO2005015992A1 PCT/ES2004/000200 ES2004000200W WO2005015992A1 WO 2005015992 A1 WO2005015992 A1 WO 2005015992A1 ES 2004000200 W ES2004000200 W ES 2004000200W WO 2005015992 A1 WO2005015992 A1 WO 2005015992A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- fluid
- distributor
- drive shaft
- distribution
- Prior art date
Links
- 230000006872 improvement Effects 0.000 title abstract description 14
- 239000012530 fluid Substances 0.000 claims abstract description 71
- 238000009826 distribution Methods 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000007921 spray Substances 0.000 claims description 25
- 238000013461 design Methods 0.000 claims description 19
- 238000005507 spraying Methods 0.000 claims description 11
- 230000033001 locomotion Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000005304 joining Methods 0.000 claims description 3
- 230000003115 biocidal effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 230000001681 protective effect Effects 0.000 abstract description 5
- 239000004009 herbicide Substances 0.000 abstract description 3
- 230000002363 herbicidal effect Effects 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 19
- 230000006870 function Effects 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 230000005484 gravity Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 239000012263 liquid product Substances 0.000 description 4
- 230000000505 pernicious effect Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 241000607479 Yersinia pestis Species 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 3
- 239000000575 pesticide Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000246358 Thymus Species 0.000 description 2
- 235000007303 Thymus vulgaris Nutrition 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000001585 thymus vulgaris Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
- B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
- B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
- B05B3/1007—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member
- B05B3/1014—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0003—Atomisers or mist blowers
- A01M7/0017—Portable atomisers, e.g. knapsack type
- A01M7/0021—Portable atomisers, e.g. knapsack type motor-driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/28—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with integral means for shielding the discharged liquid or other fluent material, e.g. to limit area of spray; with integral means for catching drips or collecting surplus liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
- B05B12/32—Shielding elements, i.e. elements preventing overspray from reaching areas other than the object to be sprayed
- B05B12/34—Shielding elements, i.e. elements preventing overspray from reaching areas other than the object to be sprayed movable relative to the spray area
Definitions
- the present invention relates to a series of improvements in the design of low-volume sprayers, which improve their operation and which, due to their configuration and characteristics, substantially improve the existing background in the context of industrial property and in the market current.
- the improvements concern both those sprayers that are located in automotive or towed vehicles, and those in which the sprayer is carried by the user who performs the work manually, whether they are sprayers of the type in which the tank is located in the back of the user, whether of the type in which said reservoir is directly mounted on the spray lance.
- the application of these low volume sprayers in different areas is known, but their use in the application of phytosanitary products in general, herbicides in particular, stands out.
- the improvements in these low-volume sprayers focus on the air intake for the tank when installed directly in the spray system itself, the system for fixing and regulating the position of an eventual protection hood for use in sensitive crops, the fluid diffusion chamber in the application head and the distribution discs, as well as the system for securing such discs to the sprayer drive assembly.
- Low volume sprayers are used profusely, as mentioned, for the application of phytosanitary products. These sprayers are characterized by their ability to spray liquid with drops of small, uniform and controlled size.
- the most widely used system is that of a distributor rotor which, by rotation, distributes the liquid to be sprayed by centrifugal action, the drops being formed according to the flow rate supplied, the angular rotation speed of the rotor, the viscosity of the fluid ...
- the low-volume sprayer is carried by an automotive vehicle, towed, pedaled, etc. although more usually it consists of a lance with the application head and its complements that are carried by the user who it is moved on foot to apply the liquid product.
- the usual configuration is that of a lance that is driven from one end and at its opposite end has an electric motor that spins a disc. The fluid travels from the reservoir to the calibrated nozzle, located next to the engine and at a lower level, and ultimately flows into the rotating distributor disk.
- low-volume sprayers have been used in agriculture for a long time, since the application of liquids in small quantities has several advantages, such as water savings, greater work efficiency, user safety, etc..
- the product to be sprayed is prepared prior to its application, either by diluting if it is a solid product, or by lowering its concentration if it is a
- the object of this patent focuses on improvements that significantly affect the functionality of this type of sprayers, improving its performance and increasing the effectiveness of the product applied with said sprayers, which significantly improves when It technically improves the air intake for the tank when installed directly in the spray system itself, that is, what could be called a vent.
- SUBSTITUTE SHEET (RULE 26) of fluid from a vent incorporated into the design of the sprayer itself, which is arranged so that it can be controlled drained and prevents unwanted fluid losses.
- the vent in question consists of a tube and a valve integrated in the design of the threaded part that supports, acting as a lid, the fluid container.
- the valve that opens or closes the vent is integral with another valve that allows the fluid to flow out to the distribution rotor, and this assembly is operated with the same button as the electrical circuit breaker.
- Both valves have flexible joints and, as mentioned, are integrated in the same actuator, which opens or closes the flow of fluids by linear displacement. From the above description it follows that when the joint of one of the valves is closing the fluid passage, the other is also. So that manufacturing tolerances do not limit the functionality of the assembly, one of the flexible seals is intended to be O-ring, while the other has been designed with a special configuration. This last joint is essentially flat, with two different thicknesses, so that the greater thickness is provided in the part that locks in the linear actuator, while the smaller thickness corresponds to the periphery of the joint, which is the part that contact the valve body, dining the fluid passage.
- This configuration allows the seal to be firmly attached to the linear actuator, while the flexibility of the peripheral zone, of smaller thickness, guarantees the seal tightness, so that the end of the said actuator, which is given by the O-ring , do not impair the proper functioning of the assembly by virtue of the resulting tolerances in the measurements of the parts that make up said valve assembly.
- the breather tube is small in section and connected to the corresponding stop valve, which, as stated above, is integrated in a piece that also fulfills both functions of cover and fastening of said container to the lance;
- the other end of the tube extends to the outside of the housing and communicates with the atmosphere, thus preventing any accidental leakage of fluid from affecting any of the internal elements of the sprayer.
- vent once the container is screwed in the working position, allows the entry of air in a controlled way when the button that activates the sprayer is operated.
- the particular arrangement of the tube in the spraying equipment does not allow the fluid to escape, even when the sprayer is in operation, whatever the position of the container-sprayer assembly.
- SUBSTITUTE SHEET (RULE 26) sprayer does not suffer significant modifications.
- the bell is attached in its central part to the spray lance, generally in the vicinity of the spray head; This fixation is resolved by screws or other removable joining means.
- the bell is thus integral to the spray head, which is usually pivotal, so that the angular position of both components with respect to the lance can be adjusted so that the whole of the bell and head can be oriented by virtue of the characteristics of The surface to be treated.
- the protective hood is subject to shocks, rubs, etc. so that the orientation of the bell-head assembly can be modified accidentally with relative ease.
- the zone of attachment of the bell to the spraying equipment undergoes intense mechanical stresses, which when generated at the periphery of said hood are amplified by the torque resulting from the distance of the application of the effort to the point of attachment of the spray lance protection hood. The result is that it is difficult to maintain the working position of the hood and that, due to the efforts resulting from the continued use of the hood, the system for attaching it to the spraying equipment can deteriorate.
- this invention proposes a fixing system consisting of an adjustable strap that is fixed on the one hand to the hood and on the other to the spray lance, complemented the connection between bell and distribution head, and establishing a triangulation that provides an extraordinary rigidity to the whole.
- This tie is constituted by a small section bar, with two holes at its ends, which is fixed to the
- SUBSTITUTE SHEET (RULE 26) spray lance by means of a clamp, which can be composed of two essentially symmetrical halves, which are held together by means of screws or other similar means, one of which also supports one end of the tie rod, so that at least one Screw can be loosened or tightened with the fingers of one hand.
- the joint is provided in a peripheral area, providing it with two fins with individual holes, so that between both of them one of the holes is located, which allows both elements to be joined by means of a pin or A thyme with nut.
- the joints are not rigid, but articulated.
- the fixation point of the clamp to the lance can be modified, thereby varying the angles of the triangulation that make up the rod, the bell and the spray lance.
- the result is a light but highly resistant structure, which allows to regulate the angular position of the bell with respect to the spraying equipment, reinforcing the fixation of the mentioned protection bell.
- the set of fine and homogeneous drops is achieved in these sprayers by means of a distribution rotor.
- This rotor is provided with rotating movement by virtue of an electric motor that is powered by rechargeable batteries or batteries, which, in the case of manual sprayers, are usually housed in a compartment for this purpose in the spray lance itself.
- the fluid to be distributed is accessed by
- the transfer conduit from the tank or container to the end of the lance, where the motor and rotor are located.
- Said conduit is usually connected at its end to a calibrated nozzle, whose passage diameter limits and regulates the flow that reaches the distribution disk, this being one of the ways to control the radius of action and the droplet size achieved by the sprayer .
- the nozzle feeds directly to the distribution rotor or flows into an intermediate chamber that conducts the fluid to said rotor.
- the design of this distribution chamber is usually resolved by placing a bowl that converges the fluid to a point close to the axis of rotation of the disk, which is coaxial to the electric motor. The importance of the design of this distribution chamber is such that it conditions the formation of the spectrum of powdered drops.
- SUBSTITUTE SHEET (RULE 26) fluid from the nozzle, to the bottom near the axis of rotation of the distributor disk, which results in an annular passage, which ensures that the rotor is fed the part closest to its axis of rotation.
- This staggering has the virtue of laminating the fluid flow, inducing a distribution of the liquid throughout the surface of each of the steps, which translates into a homogeneous feed to said disk, avoiding the pernicious appearance of preferential channels.
- this invention relates to an essentially frustoconical piece that is disposed above the previous one, between the engine and the surface where the fluid circulates by gravity.
- This complementary piece is designed to improve the transit of the fluid from the injection nozzle to the distribution disk and to protect the electric motor from the pernicious action of the fluid and / or its vapors. On the one hand it helps to guide the liquid, especially when working with relatively large flows, distributing it properly throughout the internal surface of the distribution chamber and forcing its transit to the distributor disk.
- SUBSTITUTE SHEET (RULE 26) Orient the flow and center the axis of rotation with respect to the outlet of the distribution chamber, to achieve a regular feed to said distributor rotor.
- the operation of a sprayer is all the more satisfactory the better it meets the requirements of formation of the small drops.
- the distribution of the drops is uniform, all considering the viscosity of the product, the most important components are the distribution discs.
- This patent also refers to a distributor whose innovative design has advantages that make it suitable for the application of high viscosity fluid at very low flow rates and which can be qualified as a fin distributor rotor.
- This distributor has peculiar characteristics that differentiate it from those commonly used in the application of phytosanitary products.
- the design of the distributor is such that it houses the drive shaft in a recess formed by the space that leaves a multiplicity of equal flat fins that are distributed radially, and that are joined at the bottom in a discoidal base that gives body to the whole
- the planes of the fins remain vertical, such as the axis of rotation, and the viscous fluid accesses the distribution disk from its upper part, spreading along the driving axis.
- Gravity leads the fluid through the surfaces of the fins, which, by virtue of the rotational movement to which they are subjected, lead it to its edges where it becomes drops of the desired size.
- SUBSTITUTE SHEET (RULE 26) characteristics of the fluid to be distributed and other factors such as the ambient temperature, it may be necessary for the fins to have a step in the lower part, close to the discoidal base, which, due to the centrifugal effect, prevents the fluid from reaching said base.
- the upper part of the fin can be rounded or not, depending on the viscosity of the fluid to be distributed, which should not be a restriction on the scope of this patent.
- this invention contemplates the alternative of a double distributor disc, of symmetrical design, which is suitable for the application of relatively high flow rates of fluid, or application of a fluid viscosity similar to that of water.
- This distributor is attached to the drive shaft by means of a cylindrical shaped hub that has a recess to house said shaft. From this cube split radios that support the double disk, which is essentially symmetrical with respect to the plane containing these radios.
- the double disk is formed by two opposite hollow cone trunks that are joined by their smaller radius through the intermediation of a cylindrical body. In the larger, open radius of each of these cone trunks there is a multiplicity of isosceles triangles, whose function is to break the fluid sheet to achieve a homogeneous population of droplets of the appropriate size.
- the double distributor disk In the working position, the double distributor disk is placed vertically, so that the aforementioned connecting radii between hub and distributor disk occupy a horizontal plane. Once in operation, the fluid reaches by gravity the rotor hub, from where it is distributed, by centrifugal force and following the plane of the
- SUBSTITUTE SHEET (RULE 26) spokes, to the inner wall of the distributor disk, reaching the upper and lower edges thereof.
- this rotor In the application of low viscosity fluids, when the flow to be distributed is not very high, the design of this rotor can be simplified, eliminating the upper part of it, so that the application is made only by mediating the teeth located in the bottom of the rotor.
- a conical distributor in which the aforementioned rotor has a truncated conical shape; in the smaller diameter of the cone trunk, the rotor is dined by a flat face that in its center incorporates a hub for its attachment to the drive shaft. In the inner part this surface has radial prominences that improve the distribution of the fluid.
- the rotor has a smooth internal wall that, by applying centrifugal force, allows the ascent of the fluid in a homogeneous and compensated manner.
- the rotating disk has a series of triangle-shaped teeth along its entire diameter edge
- SUBSTITUTE SHEET (RULE 26) isosceles that fulfill the function of breaking in a controlled way the ascending fluid sheet, contributing to the formation of drops of uniform size. The combination of these characteristics allows the disk to be able to distribute high flow rates of high viscosity fluid.
- the way of attaching the rotor to the motor shaft is solved by a coaxial hole that has a taper such that its shape is complementary to that of the disc fixing bolt, which is described later in this document, and which It allows precise assembly of the rotor, which is perfectly aligned with the motor shaft.
- this patent contemplates the development of a distributor rotor designed to achieve a large spray width with a contained rotor diameter.
- a rotor that has a cylindrical shape, with a flat and centered base while the other base of this cylinder is open, is conceived and remains at the top when the distributor rotor is in the working position.
- the fluid product to be distributed reaches the rotor at the point where the motor shaft is locked, from where it is distributed throughout the internal surface of the rotor.
- This surface is smooth, to induce the fluid to form a film of constant thickness on the entire inner face of the cylinder, so that the product to be distributed reaches the upper edge in a homogeneous manner. So, from
- SUBSTITUTE SHEET (RULE 26) the upper edge of the cylinder and due to the rotation of the rotor, the fluid is fired in the form of small drops.
- the edge of the disc has a multiplicity of isosceles triangles, whose number and dimensions determine the droplet size achieved in the spray.
- a coaxial hub to the axis of revolution of the cylinder and with a central conical bore arranged to house the assembly for attachment to the motor shaft, set as described below in this memory and that allows a precise assembly of the rotor, which is perfectly aligned with the motor shaft.
- any of the rotors described in the development of this specification is part of the distribution discs and therefore acts coupled to the axis of rotation, the system for fixing or securing such discs to the driving assembly of the sprayer or fundamental element to ensure the operation of it.
- the rotor fixing system presented by this patent achieves a firm and precise fixation, with the added advantage that it can be done without any mediation of any tool, simply by hand.
- the distributor disk is usually attached directly to the motor's axis of rotation, thanks to the fact that it has a housing that is slightly smaller in internal diameter than the external diameter of the motor axis, so that the fixing between both elements is achieved by pressure assembly, strong enough to ensure that the disc is not released in its rotating motion or due to shock and vibration. In this way, the assembly has to be done by forcing the shaft entry into the disk housing, which can cause deformations in both the motor shaft and the distributor disk itself, all the more
- the spray disk is attached to the motor shaft by means of a pair of parts consisting of a threaded bolt and a nut.
- the threaded bolt has the peculiarity that, instead of the head, in the opposite part to the thread it ends up in the form of a cone trunk with a coaxial cylindrical bore and a cut in the same direction.
- This axial cylindrical bore has a certain depth and a diameter similar to that of the motor shaft, to which the bolt is fixed, which at the same time is inserted in the central hole of the distribution disk which also has the shape of a cone trunk.
- This assembly has advantages that satisfactorily solve the problems of a direct fixation between disk and axis of rotation.
- the disc can be positioned gently and then tighten the nut and securely attached to the axis of rotation, without forcing any of the elements of the assembly at any time.
- it is enough to act in the opposite way, loosening the nut and removing the disk assembly, bolt and the nut itself.
- SUBSTITUTE SHEET (RULE 26) It has provided that the nut has protrusions in its periphery, to improve the grip at the time of handling it.
- FIGURE 1 Plan of an improved low volume sprayer.
- FIGURE 2- Section of the threaded part that acts as a support and cover for the fluid container and for the drain and breathing valve.
- FIGURE 3- Exploded isometric projection of the tie rod assembly and its complements, as well as the protective hood.
- FIGURE 4- Isometric projection of the strap assembly and its complements, already mounted on the hood.
- FIGURE 5- Assembly drawing of the distributor head.
- FIGURE 6- Bottom view and side section of the distribution chamber.
- FIGURE 7 Bottom view and side section of the conical piece.
- FIGURE 8 Plan view and profile of the fin distributor rotor, with stepping on the fins.
- FIGURE 9 Profile view of a fin distributor disk, without staggering them, cut to appreciate the details of a possible constructive solution.
- FIGURE 10- Side view of a double distributor rotor.
- FIGURE 11 Detail view of the hub of a double distributor rotor.
- FIGURE 12- Side view of a double distributor rotor without its upper part.
- FIGURE 13 Side view of a conical distributor rotor.
- FIGURE 14 Top and plan views of the nut.
- FIGURE 15 - Top and plan views of a bolt.
- FIGURE 16- View of a conical distributor rotor.
- FIGURE 17- View of a constructive solution in which a bolt and nut assembly is used to fasten a distribution rotor to the drive shaft of the distribution head.
- FIGURE 1 shows an embodiment of an improved low volume sprayer.
- the handle (2) for its handling has integrated the battery holder (1) and other components such as the piece (17) that serves as support and lid of the tank (18) and that also houses the mechanism that simultaneously activates the electric switch (3) and the double valve (5) that allows the passage of both the fluid to be applied
- SUBSTITUTE SHEET (RULE 26) which is carried by the outlet tube (16) to the nozzle (11) as the air that comes through the tube (4) of the vent.
- a tube or lance (6) of the appropriate length links the battery holder handle with the spray head (8), which is attached to said tube by means of a fork (7) such that the head can swing on it.
- the distribution rotor (9) is attached to the drive shaft of the electric motor, while a protection hood (10) covers both the said distribution rotor and the product that is finely pulverized in the normal operation of the spraying equipment.
- This bell is attached in its central part to the spray head, and on one of its sides it has fins through which it is connected to a reinforcement strap (12) whose anchor point to the tube is adjustable by means of an adjustable clamp (13 ), so that the position of the bell-head assembly with respect to the rest of the assembly can be adjusted at will, by manipulating the screw by hand.
- FIGURE 2 shows a section of the threaded part (17) that fulfills the functions of support of the container or fluid reservoir, its lid and the drain and breathing valve (5). As mentioned, this piece is fixed to the battery holder.
- the illustration shows how the valves that actuate the vent and the fluid outlet, respectively, are integrated into the same linear displacement actuator (21). As can be seen from what has been stated in the specification, the valves open or open simultaneously, so that the O-ring (19) that acts as a vent valve determines the end of the actuator stroke. Thus, another seal (20), due to its special configuration, which gives it great flexibility, is able to fulfill the double function of
- SUBSTITUTE SHEET (RULE 26) regulate the passage of the fluid to be sprayed and absorb the construction and assembly tolerances of all elements of the assembly.
- FIGURE 3 shows in an isometric projection an assembly drawing of the tie rod (12) and its complements, which joins the fins (15) of the bell (10) with the spray tube.
- the functions of this tie are both to reinforce the clamping of the protection bell and to regulate the relative position of the hood-distribution head assembly with respect to the battery holder control, to allow adapt the spray equipment configuration to the physiognomy of the operator and the working conditions.
- the clamp is easily adjustable thanks to the fact that one of the thymes (14) that join both halves of said clamp has a modified head so that it can be loosened or tightened at will without the need for any tools.
- FIGURE 4 represents an isometric projection of the tie rod assembly (12) together with the adjustable clamp (13), once mounted.
- FIGURE 5 is an assembly drawing of the distributor head, which shows in detail the configuration and arrangement of the different elements that compose it.
- the distribution chamber (22) is practically conical and has a smooth internal surface, with a regular stepping whose function is to distribute and laminate the fluid that is injected by the calibrated nozzle (11) into a peripheral point.
- a complementary part (23) fits between said chamber and the motor housing (25, so as to protect the latter and the electrical connections from the action pernicious fluid.
- the fluid to be sprayed flows through the space (26) that
- SUBSTITUTE SHEET (RULE 26) It is between the lower outlet of the distribution chamber and the drive shaft itself (27), reaching the distribution rotor (9) at the optimum point, that is, in the area closest to its axis of rotation.
- FIGURE 6 the distribution chamber (22) appears, in bottom view and front section, so that the stepped design of the internal surface is appreciated.
- FIGURE 7 represents the truncated conical piece (23), with a cut that distinguishes its interior.
- the figure also shows the tons (24) that facilitate the axial alignment of the part with the assembly of the distributor head.
- FIGURE 8 represents the fin distributor rotor (28). As described in the report, this rotor has the particularity that it lacks a hub where the motor shaft is inserted. On the contrary, the fixation of the mentioned rotor is produced by the adjustment of the drive shaft in the hole that is defined by the confluence of the radially arranged fins (29) and with an eventual staggering in its lower part, while the discoidal base It fulfills the single function of cohesive the multiplicity of fins.
- FIGURE 9 depicts a section of the fin distributor rotor, in which the fins do not have lower stepping (30).
- the double distributor rotor (32) has been shown, which has, as the most remarkable feature, a double conicity that results in the faces of greater diameter, open, having an edge finished in a multiplicity of isosceles triangles, which with the electric motor in operation acquires a tangential speed superior to that of any other point of the distributor rotor.
- FIGURE 12 represents a distributor rotor (31) inspired by the double distributor rotor, the design of which has been simplified by eliminating the upper part. As mentioned, this distributor rotor is suitable for the distribution of relatively small flow rates of low viscosity fluid.
- FIGURE 13 shows a cut of the conical distributor rotor (34) with the isosceles triangle teeth (36), which, as can be seen, also incorporates a coaxial hub (35) for its attachment to the drive shaft, with the particularity that This fixation is done through the assembly, previously described, of bolt and nut.
- FIGURE 14 corresponds to the nut (42) that is threaded to the bolt and allows the distributor rotor to be attached to the drive shaft.
- FIG. 15 shows the bolt (40) which, by virtue of the flexibility conferred by the groove (41) and its design in general, allows simple and precise assembly of certain distributor rotors to the motor shaft.
- FIGURE 16 shows the cylindrical distributor rotor (37), represented in a section, in which the smooth surface of the cylinder walls stands out, topped off in a tooth (38) constituted by a series of isosceles triangles of suitable dimensions to the desired drop size.
- the central hub (39), with a conical hole, is the one that houses the anchoring system, which is represented in the following FIGURE.
- FIG. 17 shows a constructive solution that represents the system for fixing certain distribution rotors to the drive shaft (27) of the sprayer, by using the bolt assembly (40) and nut (42).
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- Insects & Arthropods (AREA)
- Pest Control & Pesticides (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Catching Or Destruction (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2004264684A AU2004264684A1 (en) | 2003-08-12 | 2004-05-05 | Improvements to low-volume sprayers |
EP04731193A EP1665929A1 (en) | 2003-08-12 | 2004-05-05 | Improvements to low-volume sprayers |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200301993A ES2268917B1 (es) | 2003-08-12 | 2003-08-12 | Mejoras en pulverizadores de bajo volumen. |
ESP200301993 | 2003-08-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005015992A1 true WO2005015992A1 (es) | 2005-02-24 |
Family
ID=34178761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2004/000200 WO2005015992A1 (es) | 2003-08-12 | 2004-05-05 | Mejoras en pulverizadores de bajo volumen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1665929A1 (es) |
AU (1) | AU2004264684A1 (es) |
ES (1) | ES2268917B1 (es) |
WO (1) | WO2005015992A1 (es) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008027994B3 (de) * | 2008-06-12 | 2010-04-01 | Dürr Systems GmbH | Applikator zur Applikation eines Dichtungsmittels auf eine Bördelnaht |
CN101716562B (zh) * | 2009-11-24 | 2012-12-19 | 江苏大学 | 一种变量喷洒喷头动静片设计方法 |
GB2542401B (en) * | 2015-09-18 | 2018-12-12 | Reckitt Benckiser Brands Ltd | Modified spray head |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2169544A5 (es) * | 1972-01-27 | 1973-09-07 | Berthoud Sa | |
FR2430556A1 (fr) * | 1978-07-07 | 1980-02-01 | Martignene Gilbert Claude | Vanne pour fluide |
GB2170119A (en) * | 1985-01-28 | 1986-07-30 | Jon Chia Sheu | A humidifier |
EP0249470A2 (en) * | 1986-06-12 | 1987-12-16 | Nomix-Chipman Limited | A rotary element for liquid distribution |
US4901975A (en) * | 1987-07-20 | 1990-02-20 | Nomix Manufacturing Company Limited | Fluid delivery equipment |
ES2187235A1 (es) * | 2000-05-11 | 2003-05-16 | Sist S Y Homologacion De Promo | Cabezal pulverizador perfeccionado. |
-
2003
- 2003-08-12 ES ES200301993A patent/ES2268917B1/es not_active Expired - Fee Related
-
2004
- 2004-05-05 AU AU2004264684A patent/AU2004264684A1/en not_active Abandoned
- 2004-05-05 WO PCT/ES2004/000200 patent/WO2005015992A1/es not_active Application Discontinuation
- 2004-05-05 EP EP04731193A patent/EP1665929A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2169544A5 (es) * | 1972-01-27 | 1973-09-07 | Berthoud Sa | |
FR2430556A1 (fr) * | 1978-07-07 | 1980-02-01 | Martignene Gilbert Claude | Vanne pour fluide |
GB2170119A (en) * | 1985-01-28 | 1986-07-30 | Jon Chia Sheu | A humidifier |
EP0249470A2 (en) * | 1986-06-12 | 1987-12-16 | Nomix-Chipman Limited | A rotary element for liquid distribution |
US4901975A (en) * | 1987-07-20 | 1990-02-20 | Nomix Manufacturing Company Limited | Fluid delivery equipment |
ES2187235A1 (es) * | 2000-05-11 | 2003-05-16 | Sist S Y Homologacion De Promo | Cabezal pulverizador perfeccionado. |
Also Published As
Publication number | Publication date |
---|---|
EP1665929A1 (en) | 2006-06-07 |
ES2268917A1 (es) | 2007-03-16 |
AU2004264684A1 (en) | 2005-02-24 |
ES2268917B1 (es) | 2008-03-01 |
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