WO1999059728A1 - Spraying pump - Google Patents
Spraying pump Download PDFInfo
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- WO1999059728A1 WO1999059728A1 PCT/ES1999/000073 ES9900073W WO9959728A1 WO 1999059728 A1 WO1999059728 A1 WO 1999059728A1 ES 9900073 W ES9900073 W ES 9900073W WO 9959728 A1 WO9959728 A1 WO 9959728A1
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- WIPO (PCT)
- Prior art keywords
- cylinder
- hollow
- interior space
- pump body
- pump according
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1001—Piston pumps
- B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
- B05B11/1018—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element and the controlling element cooperating with means for opening or closing the inlet valve
Definitions
- the invention relates to a spray pump, adaptable to a container comprising [I] a push button suitable for moving between an extended position and a retracted position; [II] a diffuser; [III] a pump body that defines a pumping chamber and a bottom; [IV] a main piston whose interior defines a first hollow interior space and which configures a valve seat; [V] a second piston that disposes at one of its ends a rod that partially penetrates the first hollow interior space and that is suitable for being applied, in a sealed manner, on the valve seat; [VI] a spring capable of exerting a force that tends to keep the button in the extended position; and [Vil] a communication tube that extends from the pump body to the container.
- Spray pumps of the above type are known, usually used for spraying low-viscosity liquids such as perfumes, deodorants, etc. Usually these pumps have an internal actuation system composed of three elements that open and close the pumping chamber and produce compression. Other spray pumps, such as the one described in patent application P9800205, provide for an internal actuation system consisting of two elements, with the consequent cost savings.
- this type of solution has the disadvantage of requiring a relatively large space, a space that is often scarce in the applications to which this type of pump is intended. It is also critical in this type of pumps the tightness of the pumping chamber to prevent the liquid to be sprayed from returning to the container during compression, especially in the case of low viscosity liquids.
- An additional drawback is the spraying of not totally constant amounts of liquid because the initial position of the main piston It is not always the same as it depends on several factors.
- Another drawback of this type of pumps is that they only allow the connection of a communication tube or probe tube of a certain cross section when it is sometimes interesting to be able to mount tubes of different cross sections depending on, for example, the viscosity of the liquid to spray
- the invention aims to overcome these drawbacks.
- This purpose is achieved by means of a spray pump of the type indicated at the beginning characterized in that [a] the second piston has, at the opposite end of the rod, a cylindrical sleeve, inside which a second hollow space is defined; and [b] it is provided with a cylinder that defines a third hollow interior space inside it and has an end partially inserted in the second hollow interior space, resting, in a sealed manner, the external surface of the cylinder on the internal surface of the cylindrical sleeve, and the communication tube covering the opposite end of the cylinder, the opposite end of the cylinder being able to rest in a sealed manner on the lower end of the pump body.
- a further improvement is achieved with the addition of ribs on the outer surface of the cylinder and on the inner surface of the pump body or between the inner surface of the cylinder and the outer surface of a hollow centered recess located at the bottom of the body of pump, these nerves being able to fit between them limiting the travel of the cylinder.
- Another additional improvement, which optimizes the tightness, is the addition to the cylinder of a transverse surface subjected to the pressure of the fluid within the pumping chamber such that the pressure exerts a net force on the transverse surface that collaborates with the movement of the cylinder and that helps the realization of an opening and a tight seal between the pumping chamber and the container container of the liquid to be sprayed.
- Sealing is also improved by including a conical trunk surface at the lower end of the pump such that the lower end of the cylinder is apt to rest on the conical wall in a tight manner.
- Another additional improvement consists in the inclusion in the outer surface of the upper end of the cylinder of grooves that connect the pumping chamber with the second inner hollow space when the second piston is at the upper end of its stroke, which allows regulation of the most precise dosage, since the pump always begins to compress from the same position of the main piston.
- Another additional improvement consists in giving the hollow centered withdrawal a conformation that allows the interchangeable mounting of communication tubes of different cross sections, depending on, for example, the characteristics of the liquid to be sprayed.
- This conformation is obtained, for example, by providing that the hollow centered recess hole has at least two cross sections, the cross section of smaller dimension being closer to the third inner hollow space and the remaining cross sections being arranged from least to greatest in Sense towards the container.
- the hollow centered fold can be made to have an outwardly substantially cylindrical projection whose outer surface has at least one cross section such that it allows the assembly of tubes of different cross sections on this outer surface.
- Fig. 1 a view of a longitudinal section of an embodiment of a pump according to the invention.
- Fig. 2 a view of a longitudinal section of another embodiment of a pump according to the invention.
- the spray pump of Fig. 1 comprises a button 1, a diffuser 2, a pump body 3, an external support 4, a main piston 5, a second piston 6, a cylinder 7, a communication tube 8, a spring 9 and a container (not shown in Figs.).
- the main piston 5 is hollow, the push-button 1 is mounted at one of its ends and has the opposite end housed inside the pump body 3.
- the diffuser 2 is mounted inside the push-button 1 and communicates an end of a duct Output 10 with the outside.
- the opposite end of the outlet duct 10 communicates with the interior of the main piston 5.
- the interior of the main piston 5 defines a first hollow interior space 11 which has, at an intermediate point, a throttle that configures a valve seat 12. This first hollow interior space 11 allows the outlet duct 10 to communicate with the interior of the pump body 3.
- Pump body 3 is substantially cylindrical and defines an axis
- the interior of the pump body 3 defines a pumping chamber 16 in which the second piston 6, the cylinder 7 and the spring 9 are housed.
- the second piston 6 has at one of its ends a rod 17 that partially penetrates the first hollow interior space 11 and is apt to be applied, in a sealed manner, on the valve seat 12.
- the second piston 6 disposes, in the opposite end to the rod 17, of a cylindrical sleeve 18 defining a second hollow interior space 19.
- One of the ends of the cylinder 7 penetrates the second hollow interior space 19 and the outer surface of the cylinder 7 rests, in a sealed manner, on the inner surface of the cylindrical sleeve 18.
- Regattas 20 have been incorporated at the upper end of the outer surface of the cylinder 7, which run through the upper part of the cylinder 7 and which communicate the pumping chamber 16 with the second hollow interior space 19.
- the main piston 5 when the main piston 5, starting from the extended position, it begins to move axially towards the bottom 14 of the pump body 3 due to an external force applied on the button 1, the liquid contained in the pumping chamber 16 flows into the second hollow interior space 19, through the races 20, until the cylindrical jacket 18 reaches the end of the races 20 and closes the communication with the second hollow interior space 19. From that moment the advance of the main piston 5 implies an increase in pressure in the pumping chamber 16 which will push the second piston 6 in the direction of the bottom 14 of the pump body 3, separating the rod 17 from the valve seat 12 and allowing the exit of the liquid to the outside through the outlet duct 10 and the diffuser 2. When the external force is no longer applied, the force generated by the spring 9 tends to push the assembly formed by the button 1, the main piston 5 and the second piston 6 towards its extended position.
- the bottom 14 of the pump body 3 has a truncated conical surface 21 on which the end of the cylinder 7 opposite the cylindrical sleeve 18 is able to rest in a sealed manner. Additionally, the inner side walls of the pump body 3 have, in the vicinity of the bottom 14, first ribs 22 with an approximate shape of saw teeth, with the vertices oriented in the opposite direction to the bottom 14, fit to fit, limiting the path of the cylinder 7, with a few second ribs 23 present in the lower part of the outer side face of the cylinder 7, which also have an approximate shape of saw teeth and have the vertices oriented towards the bottom 14.
- the cylinder 7, which is displaced axially mainly by the frictional force that is established between the outer surface of the cylinder 7 and the inner surface of the cylindrical sleeve 18 when the second piston 6 moves, opens or closes a communication between the pumping chamber 16 and a third interior space gap 24 that is inside the cylinder 7.
- a transverse surface 25 that the cylinder 7 disposes at an intermediate point of its outer surface experiences a force in axial direction that the cylinder 7 tends to press against the bottom 14, thus improving the quality of the seal that is established through the first and second ribs 22 and 23 and the conical surface 21.
- the pump body 3 also has a hollow centered fold 15, oriented axially, at the bottom 14.
- This hollow centered fold 15 is crossed, axially, by a communication tube 8 such that the external surface of said communication tube 8 rests in a sealed manner on the internal surface of the hollow centered fold 15.
- the communication tube 8 has the free end inside the container container of the liquid to be sprayed. In this way, when the ascending movement of the second piston 6 is started, a vacuum is created in the second and in the third hollow interior space 19 and 24 that aspirates the liquid from the container through the communication tube 8.
- the external support 4 fixes the spraying pump assembly to the container containing the liquid to be sprayed.
- Fig. 2 a spray pump similar to the previous one can be seen, in which the hollow centered withdrawal hole 15 has two cross sections 26 and 27 of different dimensions, the first cross section 26 is of smaller dimension and is closer to the third hollow interior space 24 while the second cross section 27 is of larger dimension and is further away from the third hollow interior space 24.
- hollow centered fold 15 has an outwardly projecting 28, substantially cylindrical.
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- Reciprocating Pumps (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
Spraying pump comprising a press-button (1), a diffuser (2), a pump body (3) defining a pumping chamber (16) and a bottom (14), a main piston (5) of which the inside defines a first hollow internal space (11) and configures a valve seat (12), a second piston (6) which is provided with a rod (17) and which is intended to be applied sealingly to the valve seat (12) and, at the opposite extremity of the rod (17), a cylindrical skirt (18) which defines internally a second hollow space (19), a spring (9), and a cylinder (7) which has an extremity partially introduced into the second internal hollow space (19) and of which the opposite extremity covers a communication tube (8) and is intended to bear sealingly on the lower extremity of the pump body (3).
Description
BOMBA PULVE IZADORA LIFTING PUMP PUMP
D E S C R I P C I Ó ND E S C R I P C I Ó N
La invención se refiere a una bomba pulverizadora, adaptable a un recipiente de las que comprenden [I] un pulsador apto para desplazarse entre una posición extendida y una posición retraída; [II] un difusor; [III] un cuerpo de bomba que define una cámara de bombeo y un fondo; [IV] un pistón principal cuyo interior define un primer espacio interior hueco y que configura un asiento de válvula; [V] un segundo pistón que dispone en uno de sus extremos de un vastago que penetra parcialmente en el primer espacio interior hueco y que es apto para aplicarse, de una manera estanca, sobre el asiento de válvula; [VI] un resorte apto para ejercer una fuerza que tiende a mantener el pulsador en la posición extendida; y [Vil] un tubo de comunicación que se extiende desde el cuerpo de bomba hasta el recipiente.The invention relates to a spray pump, adaptable to a container comprising [I] a push button suitable for moving between an extended position and a retracted position; [II] a diffuser; [III] a pump body that defines a pumping chamber and a bottom; [IV] a main piston whose interior defines a first hollow interior space and which configures a valve seat; [V] a second piston that disposes at one of its ends a rod that partially penetrates the first hollow interior space and that is suitable for being applied, in a sealed manner, on the valve seat; [VI] a spring capable of exerting a force that tends to keep the button in the extended position; and [Vil] a communication tube that extends from the pump body to the container.
Son conocidas bombas pulverizadoras del tipo arriba indicado, usualmente empleadas para la pulverización de líquidos poco viscosos tipo perfumes, desodorantes, etc. Habitualmente estas bombas disponen de un sistema de actuación interno compuesto por tres elementos que abren y cierran la cámara de bombeo y producen la compresión. Otras bombas pulverizadoras, como la descrita en la solicitud de patente P9800205, prevén un sistema de actuación interno compuesto por dos elementos, con el consiguiente ahorro en costes.Spray pumps of the above type are known, usually used for spraying low-viscosity liquids such as perfumes, deodorants, etc. Usually these pumps have an internal actuation system composed of three elements that open and close the pumping chamber and produce compression. Other spray pumps, such as the one described in patent application P9800205, provide for an internal actuation system consisting of two elements, with the consequent cost savings.
Sin embargo este tipo de soluciones presenta el inconveniente de requerir un espacio relativamente grande, espacio que frecuentemente es escaso en las aplicaciones a las que van destinados este tipo de bombas. También es crítico en este tipo de bombas la estanqueidad de la cámara de bombeo para evitar que durante la compresión el líquido a pulverizar retorne al recipiente, sobre todo en el caso de líquidos de baja viscosidad. Un inconveniente adicional es la pulverización de cantidades de líquido no totalmente constantes debido a que la posición inicial del pistón principal
no es siempre la misma pues depende de varios factores. Otro inconveniente que presenta este tipo de bombas es que solamente permiten la conexión de un tubo de comunicación o tubo sonda de una determinada sección transversal cuando a veces es interesante poder montar tubos de secciones transversales diferentes en función de, por ejemplo, la viscosidad del líquido a pulverizar.However, this type of solution has the disadvantage of requiring a relatively large space, a space that is often scarce in the applications to which this type of pump is intended. It is also critical in this type of pumps the tightness of the pumping chamber to prevent the liquid to be sprayed from returning to the container during compression, especially in the case of low viscosity liquids. An additional drawback is the spraying of not totally constant amounts of liquid because the initial position of the main piston It is not always the same as it depends on several factors. Another drawback of this type of pumps is that they only allow the connection of a communication tube or probe tube of a certain cross section when it is sometimes interesting to be able to mount tubes of different cross sections depending on, for example, the viscosity of the liquid to spray
La invención se propone superar estos inconvenientes. Esta finalidad se consigue mediante una bomba pulverizadora del tipo indicado al principio caracterizada porque [a] el segundo pistón dispone, en el extremo opuesto al vastago, de una camisa cilindrica, en cuyo interior se define un segundo espacio hueco; y [b] está provista de un cilindro que define en su interior un tercer espacio interior hueco y tiene un extremo introducido parcialmente en el segundo espacio interior hueco, apoyándose, de una manera estanca, la superficie externa del cilindro sobre la superficie interna de la camisa cilindrica, y cubriendo el extremo opuesto del cilindro el tubo de comunicación, siendo el extremo opuesto del cilindro apto para apoyarse de una manera estanca sobre el extremo inferior del cuerpo de bomba.The invention aims to overcome these drawbacks. This purpose is achieved by means of a spray pump of the type indicated at the beginning characterized in that [a] the second piston has, at the opposite end of the rod, a cylindrical sleeve, inside which a second hollow space is defined; and [b] it is provided with a cylinder that defines a third hollow interior space inside it and has an end partially inserted in the second hollow interior space, resting, in a sealed manner, the external surface of the cylinder on the internal surface of the cylindrical sleeve, and the communication tube covering the opposite end of the cylinder, the opposite end of the cylinder being able to rest in a sealed manner on the lower end of the pump body.
Efectivamente, el hecho de introducir el cilindro en el interior de la camisa cilindrica y la nueva ubicación del resorte permiten realizar la bomba pulverizadora de una manera más compacta.Indeed, the fact of introducing the cylinder inside the cylindrical sleeve and the new location of the spring allow the spraying pump to be carried out in a more compact manner.
Una mejora adicional se consigue con la adición de unos nervios en la superficie exterior del cilindro y en la superficie interior del cuerpo de bomba o entre la superficie interna del cilindro y la superficie externa de un repliegue centrado hueco ubicado en la parte inferior del cuerpo de bomba, siendo estos nervios aptos para encajar entre ellos limitando el recorrido del cilindro.A further improvement is achieved with the addition of ribs on the outer surface of the cylinder and on the inner surface of the pump body or between the inner surface of the cylinder and the outer surface of a hollow centered recess located at the bottom of the body of pump, these nerves being able to fit between them limiting the travel of the cylinder.
Otra mejora adicional, que optimiza la estanqueidad, es la adición al cilindro de una superficie transversal sometida a la presión del fluido comprendido dentro de la cámara de bombeo de tal manera que la presión ejerce una fuerza neta sobre la superficie transversal que colabora con el movimiento del cilindro y que ayuda a la realización de una apertura y un
cierre estanco entre la cámara de bombeo y el recipiente contenedor del líquido a pulverizar.Another additional improvement, which optimizes the tightness, is the addition to the cylinder of a transverse surface subjected to the pressure of the fluid within the pumping chamber such that the pressure exerts a net force on the transverse surface that collaborates with the movement of the cylinder and that helps the realization of an opening and a tight seal between the pumping chamber and the container container of the liquid to be sprayed.
También se mejora la estanqueidad incluyendo una superficie troncocónica en el extremo inferior de la bomba tal que el extremo inferior del cilindro es apto para apoyarse sobre la pared troncocónica de una manera estanca.Sealing is also improved by including a conical trunk surface at the lower end of the pump such that the lower end of the cylinder is apt to rest on the conical wall in a tight manner.
Otra mejora adicional consiste en la inclusión en la superficie exterior del extremo superior del cilindro de unas ranuras que comunican la cámara de bombeo con el segundo espacio hueco interior cuando el segundo pistón se halla en el extremo superior de su carrera, lo que permite una regulación de la dosificación más precisa, pues la bomba empieza a comprimir siempre a partir de la misma posición del pistón principal.Another additional improvement consists in the inclusion in the outer surface of the upper end of the cylinder of grooves that connect the pumping chamber with the second inner hollow space when the second piston is at the upper end of its stroke, which allows regulation of the most precise dosage, since the pump always begins to compress from the same position of the main piston.
Finalmente otra mejora adicional consiste en darle al repliegue centrado hueco una conformación tal que permita el montaje indistinto de tubos de comunicación de diferentes secciones transversales, en función de, por ejemplo, las características del líquido que se desea pulverizar.Finally, another additional improvement consists in giving the hollow centered withdrawal a conformation that allows the interchangeable mounting of communication tubes of different cross sections, depending on, for example, the characteristics of the liquid to be sprayed.
Esta conformación se obtiene, por ejemplo, disponiendo que el orificio del repliegue centrado hueco presente por lo menos dos secciones transversales, estando la sección transversal de menor dimensión más próxima al tercer espacio hueco interior y estando las restantes secciones transversales dispuestas de menor a mayor en sentido hacia el recipiente.This conformation is obtained, for example, by providing that the hollow centered recess hole has at least two cross sections, the cross section of smaller dimension being closer to the third inner hollow space and the remaining cross sections being arranged from least to greatest in Sense towards the container.
Adicionalmente se puede hacer que el repliegue centrado hueco disponga de una proyección hacia el exterior de forma substancialmente cilindrica cuya superficie exterior presente por lo menos una sección transversal tal que permita el montaje de tubos de diferentes secciones transversales sobre esta superficie exterior.Additionally, the hollow centered fold can be made to have an outwardly substantially cylindrical projection whose outer surface has at least one cross section such that it allows the assembly of tubes of different cross sections on this outer surface.
Otras ventajas y características de la invención se aprecian a partir de la siguiente descripción, en la que, sin ningún carácter limitativo, se relata un modo preferente de realización de la invención, haciendo mención de los dibujos que se acompañan. Las figuras muestran:Other advantages and features of the invention can be seen from the following description, in which, without any limitation, a preferred embodiment of the invention is mentioned, mentioning the accompanying drawings. The figures show:
Fig. 1 , una vista de una sección longitudinal de una forma de realización de una bomba de acuerdo con la invención.
Fig. 2, una vista de una sección longitudinal de otra forma de realización de una bomba de acuerdo con la invención.Fig. 1, a view of a longitudinal section of an embodiment of a pump according to the invention. Fig. 2, a view of a longitudinal section of another embodiment of a pump according to the invention.
La bomba pulverizadora de la Fig. 1 comprende un pulsador 1 , un difusor 2, un cuerpo de bomba 3, un soporte externo 4, un pistón principal 5, un segundo pistón 6, un cilindro 7, un tubo de comunicación 8, un resorte 9 y un recipiente (no representado en las Figs.).The spray pump of Fig. 1 comprises a button 1, a diffuser 2, a pump body 3, an external support 4, a main piston 5, a second piston 6, a cylinder 7, a communication tube 8, a spring 9 and a container (not shown in Figs.).
El pistón principal 5 es hueco, tiene montado en uno de sus extremos el pulsador 1 y tiene el extremo opuesto alojado en el interior del cuerpo de bomba 3. El difusor 2 está montado en el interior del pulsador 1 y comunica un extremo de un conducto de salida 10 con el exterior. El extremo opuesto del conducto de salida 10 comunica con el interior del pistón principal 5. El interior del pistón principal 5 define un primer espacio interior hueco 11 que presenta, en un punto intermedio, una estrangulación que configura un asiento de válvula 12. Este primer espacio interior hueco 11 permite comunicar el conducto de salida 10 con el interior del cuerpo de bomba 3.The main piston 5 is hollow, the push-button 1 is mounted at one of its ends and has the opposite end housed inside the pump body 3. The diffuser 2 is mounted inside the push-button 1 and communicates an end of a duct Output 10 with the outside. The opposite end of the outlet duct 10 communicates with the interior of the main piston 5. The interior of the main piston 5 defines a first hollow interior space 11 which has, at an intermediate point, a throttle that configures a valve seat 12. This first hollow interior space 11 allows the outlet duct 10 to communicate with the interior of the pump body 3.
El cuerpo de bomba 3 es substancialmente cilindrico y define un ejePump body 3 is substantially cylindrical and defines an axis
13 en sentido longitudinal. Por uno de los extremos del cuerpo de bomba 3 sobresale el extremo del pistón principal 5 sobre el que va montado el pulsador 1 , y el extremo opuesto del cuerpo de bomba 3 define un fondo13 longitudinally. At one end of the pump body 3, the end of the main piston 5 protrudes over which the button 1 is mounted, and the opposite end of the pump body 3 defines a bottom
14 en el que se encuentra un repliegue centrado hueco 15. El interior del cuerpo de bomba 3 define una cámara de bombeo 16 en la que se alojan el segundo pistón 6, el cilindro 7 y el resorte 9.14 in which there is a hollow centered withdrawal 15. The interior of the pump body 3 defines a pumping chamber 16 in which the second piston 6, the cylinder 7 and the spring 9 are housed.
El segundo pistón 6 dispone en uno de sus extremos de un vastago 17 que penetra parcialmente en el primer espacio interior hueco 11 y es apto para aplicarse, de una manera estanca, sobre el asiento de válvula 12. El segundo pistón 6 dispone, en el extremo opuesto al vastago 17, de una camisa cilindrica 18 que define un segundo espacio interior hueco 19. Uno de los extremos del cilindro 7 penetra en el segundo espacio interior hueco 19 y la superficie exterior del cilindro 7 se apoya, de una manera estanca, sobre la superficie interna de la camisa cilindrica 18.
En el extremo superior de la superficie exterior del cilindro 7 se han incorporado unas regatas 20 que recorren la parte superior del cilindro 7 y que comunican la cámara de bombeo 16 con el segundo espacio interior hueco 19. De esta manera cuando el pistón principal 5, partiendo de la posición extendida, comienza a desplazarse en sentido axial hacia el fondo 14 del cuerpo de bomba 3 debido a una fuerza externa aplicada sobre el pulsador 1 , el líquido contenido en la cámara de bombeo 16 fluye hacia el segundo espacio interior hueco 19, a través de las regatas 20, hasta que la camisa cilindrica 18 llega hasta el final de las regatas 20 y cierra la comunicación con el segundo espacio interior hueco 19. A partir de ese momento el avance del pistón principal 5 implica un aumento de presión en la cámara de bombeo 16 que empujará al segundo pistón 6 en dirección del fondo 14 del cuerpo de bomba 3, separando el vastago 17 del asiento de válvula 12 y permitiendo la salida del líquido al exterior a través del conducto de salida 10 y del difusor 2. Cuando se deja de aplicar la fuerza exterior, la fuerza generada por el resorte 9 tiende a empujar al conjunto formado por el pulsador 1 , el pistón principal 5 y el segundo pistón 6 hacia su posición extendida.The second piston 6 has at one of its ends a rod 17 that partially penetrates the first hollow interior space 11 and is apt to be applied, in a sealed manner, on the valve seat 12. The second piston 6 disposes, in the opposite end to the rod 17, of a cylindrical sleeve 18 defining a second hollow interior space 19. One of the ends of the cylinder 7 penetrates the second hollow interior space 19 and the outer surface of the cylinder 7 rests, in a sealed manner, on the inner surface of the cylindrical sleeve 18. Regattas 20 have been incorporated at the upper end of the outer surface of the cylinder 7, which run through the upper part of the cylinder 7 and which communicate the pumping chamber 16 with the second hollow interior space 19. Thus, when the main piston 5, starting from the extended position, it begins to move axially towards the bottom 14 of the pump body 3 due to an external force applied on the button 1, the liquid contained in the pumping chamber 16 flows into the second hollow interior space 19, through the races 20, until the cylindrical jacket 18 reaches the end of the races 20 and closes the communication with the second hollow interior space 19. From that moment the advance of the main piston 5 implies an increase in pressure in the pumping chamber 16 which will push the second piston 6 in the direction of the bottom 14 of the pump body 3, separating the rod 17 from the valve seat 12 and allowing the exit of the liquid to the outside through the outlet duct 10 and the diffuser 2. When the external force is no longer applied, the force generated by the spring 9 tends to push the assembly formed by the button 1, the main piston 5 and the second piston 6 towards its extended position.
El fondo 14 del cuerpo de bomba 3 presenta una superficie troncocónica 21 sobre la que el extremo del cilindro 7 opuesto a la camisa cilindrica 18 es apto para apoyarse de una manera estanca. Adicionaimente las paredes laterales interiores del cuerpo de bomba 3 presentan, en las proximidades de fondo 14, unos primeros nervios 22 con una forma aproximada de dientes de sierra, con los vértices orientados en sentido opuesto al fondo 14, aptos para encajar, limitando el recorrido del cilindro 7, con unos segundos nervios 23 presentes en la parte inferior de la cara lateral exterior del cilindro 7, que también tienen una forma aproximada de dientes de sierra y tienen los vértices orientados hacia el fondo 14. De esta manera el cilindro 7, que es desplazado en sentido axial principalmente por la fuerza de rozamiento que se establece entre la superficie exterior del cilindro 7 y la superficie interior de la camisa cilindrica 18 al desplazarse el segundo pistón 6, abre o cierra una comunicación entre la cámara de bombeo 16 y un tercer espacio interior
hueco 24 que se encuentra en el interior del cilindro 7. Cuando esta comunicación está cerrada y en la cámara de bombeo 16 se incrementa la presión, una superficie transversal 25 que el cilindro 7 dispone en un punto intermedio de su superficie exterior experimenta una fuerza en sentido axial que tiende a apretar el cilindro 7 contra el fondo 14, mejorando así la calidad del cierre estanco que se establece a través de los primeros y segundos nervios 22 y 23 y de la superficie troncocónica 21.The bottom 14 of the pump body 3 has a truncated conical surface 21 on which the end of the cylinder 7 opposite the cylindrical sleeve 18 is able to rest in a sealed manner. Additionally, the inner side walls of the pump body 3 have, in the vicinity of the bottom 14, first ribs 22 with an approximate shape of saw teeth, with the vertices oriented in the opposite direction to the bottom 14, fit to fit, limiting the path of the cylinder 7, with a few second ribs 23 present in the lower part of the outer side face of the cylinder 7, which also have an approximate shape of saw teeth and have the vertices oriented towards the bottom 14. In this way the cylinder 7, which is displaced axially mainly by the frictional force that is established between the outer surface of the cylinder 7 and the inner surface of the cylindrical sleeve 18 when the second piston 6 moves, opens or closes a communication between the pumping chamber 16 and a third interior space gap 24 that is inside the cylinder 7. When this communication is closed and in the pumping chamber 16 the pressure is increased, a transverse surface 25 that the cylinder 7 disposes at an intermediate point of its outer surface experiences a force in axial direction that the cylinder 7 tends to press against the bottom 14, thus improving the quality of the seal that is established through the first and second ribs 22 and 23 and the conical surface 21.
El cuerpo de bomba 3 dispone además de un repliegue centrado hueco 15, orientado en sentido axial, en el fondo 14. Este repliegue centrado hueco 15 es atravesado, en sentido axial, por un tubo de comunicación 8 de tal manera que la superficie externa de dicho tubo de comunicación 8 se apoya de una manera estanca sobre la superficie interna del repliegue centrado hueco 15. El tubo de comunicación 8 tiene el extremo libre en el interior del recipiente contenedor del líquido a pulverizar. De esta manera, cuando se inicia el movimiento de ascensión del segundo pistón 6 se crea un vacío en el segundo y en el tercer espacio interior hueco 19 y 24 que aspira el líquido del recipiente a través del tubo de comunicación 8. Simultáneamente se crea un vacío en la cámara de bombeo 16 que genera una fuerza axial sobre la superficie transversal 25 y que, junto con la fuerza de rozamiento generada sobre la superficie exterior del cilindro 7 por el segundo pistón 6 en su movimiento, tienden a separar el cilindro 7 del fondo 14, por lo que el líquido, aspirado por el vacío, pasa junto a la superficie troncocónica 21 y entre los primeros y segundos nervios 22 y 23 y llena de nuevo la cámara de bombeo 16. El movimiento del cilindro 7 está limitado por el resorte 9, que se apoya sobre los primeros nervios 22 solidarios al cuerpo de bomba 3 y limita el desplazamiento de los segundos nervios 23 solidarios al cilindro 7.The pump body 3 also has a hollow centered fold 15, oriented axially, at the bottom 14. This hollow centered fold 15 is crossed, axially, by a communication tube 8 such that the external surface of said communication tube 8 rests in a sealed manner on the internal surface of the hollow centered fold 15. The communication tube 8 has the free end inside the container container of the liquid to be sprayed. In this way, when the ascending movement of the second piston 6 is started, a vacuum is created in the second and in the third hollow interior space 19 and 24 that aspirates the liquid from the container through the communication tube 8. Simultaneously a vacuum in the pumping chamber 16 that generates an axial force on the transverse surface 25 and which, together with the frictional force generated on the outer surface of the cylinder 7 by the second piston 6 in its movement, tend to separate the cylinder 7 from the bottom 14, whereby the liquid, sucked by the vacuum, passes along the frustoconical surface 21 and between the first and second ribs 22 and 23 and refills the pumping chamber 16. The movement of the cylinder 7 is limited by the spring 9, which rests on the first ribs 22 integral with the pump body 3 and limits the displacement of the second ribs 23 integral with the cylinder 7.
El soporte externo 4 fija el conjunto de la bomba pulverizadora al recipiente contenedor del líquido a pulverizar. En la Fig. 2 puede verse una bomba pulverizadora semejante a ia anterior, en la que el orificio del repliegue centrado hueco 15 tiene dos secciones transversales 26 y 27 de diferente dimensión, la primera sección transversal 26 es de dimensión menor y está más próxima al tercer
espacio interior hueco 24 mientras que la segunda sección transversal 27 es de dimensión mayor y está más alejada del tercer espacio interior hueco 24.The external support 4 fixes the spraying pump assembly to the container containing the liquid to be sprayed. In Fig. 2 a spray pump similar to the previous one can be seen, in which the hollow centered withdrawal hole 15 has two cross sections 26 and 27 of different dimensions, the first cross section 26 is of smaller dimension and is closer to the third hollow interior space 24 while the second cross section 27 is of larger dimension and is further away from the third hollow interior space 24.
Adicionalmente el repliegue centrado hueco 15 dispone de una proyección 28 hacia el exterior, de forma substancialmente cilindrica.Additionally, the hollow centered fold 15 has an outwardly projecting 28, substantially cylindrical.
Así es factible montar tubos de comunicación 8 de diferentes secciones, yendo en algunos casos montados en el interior del repliegue centrado hueco 15, de tal manera que la superficie exterior del tubo de comunicación 8 y la superficie interior del repliegue centrado hueco 15, en la sección correspondiente, están en contacto de una manera estanca, y en otros casos es la proyección exterior 28 del repliegue centrado hueco 15 la que se introduce en el interior del tubo de comunicación 8, de tal modo que la superficie exterior de la proyección 28 está en contacto, de una manera estanca, con la superficie interior del tubo de comunicación 8.
Thus it is feasible to mount communication tubes 8 of different sections, in some cases mounted inside the hollow centered fold 15, such that the outer surface of the communication tube 8 and the inner surface of the hollow centered fold 15, in the corresponding section, they are in contact in a sealed manner, and in other cases it is the outer projection 28 of the hollow centered recess 15 which is introduced inside the communication tube 8, such that the outer surface of the projection 28 is in contact, in a sealed manner, with the inner surface of the communication tube 8.
Claims
1.- Bomba pulverizadora, adaptable a un recipiente y que comprende [I] un pulsador (1) apto para desplazarse entre una posición extendida y una posición retraída; [II] un difusor (2); [III] un cuerpo de bomba (3) que define una cámara de bombeo (16) y un fondo (14); [IV] un pistón principal (5) cuyo interior define un primer espacio interior hueco (11) y que configura un asiento de válvula (12); [V] un segundo pistón (6) que dispone en uno de sus extremos de un vastago (17) que penetra parcialmente en dicho primer espacio interior hueco (11 ) y que es apto para aplicarse, de una manera estanca, sobre dicho asiento de válvula (12); [VI] un resorte (9) apto para ejercer una fuerza que tiende a mantener dicho pulsador (1 ) en dicha posición extendida; y [Vil] un tubo de comunicación (8) que se extiende desde dicho cuerpo de bomba (3) hasta dicho recipiente, caracterizada porque [a] dicho segundo pistón (6) dispone, en el extremo opuesto a dicho vastago (17), de una camisa cilindrica (18), en cuyo interior se define un segundo espacio hueco (19); y [b] está provista de un cilindro (7) que define en su interior un tercer espacio interior hueco (24) y tiene un extremo introducido parcialmente en dicho segundo espacio interior hueco (19), apoyándose, de una manera estanca, la superficie externa de dicho cilindro (7) sobre la superficie interna de dicha camisa cilindrica (18), y cubriendo el extremo opuesto de dicho cilindro (7) dicho tubo de comunicación (8), siendo dicho extremo opuesto de dicho cilindro (7) apto para apoyarse de una manera estanca sobre el extremo inferior de dicho cuerpo de bomba (3).1.- Spraying pump, adaptable to a container and comprising [I] a button (1) suitable for moving between an extended position and a retracted position; [II] a diffuser (2); [III] a pump body (3) defining a pumping chamber (16) and a bottom (14); [IV] a main piston (5) whose interior defines a first hollow interior space (11) and which configures a valve seat (12); [V] a second piston (6) having at one of its ends a rod (17) that partially penetrates into said first hollow interior space (11) and which is apt to be applied, in a sealed manner, on said seat of valve (12); [VI] a spring (9) capable of exerting a force that tends to keep said push button (1) in said extended position; and [Vil] a communication tube (8) extending from said pump body (3) to said container, characterized in that [a] said second piston (6) has, at the opposite end to said rod (17), of a cylindrical jacket (18), in which a second hollow space (19) is defined; and [b] it is provided with a cylinder (7) which defines in its interior a third hollow interior space (24) and has an end partially inserted in said second hollow interior space (19), with the surface being supported in a sealed manner external of said cylinder (7) on the internal surface of said cylindrical sleeve (18), and covering the opposite end of said cylinder (7) said communication tube (8), said opposite end of said cylinder (7) being suitable for rest in a sealed manner on the lower end of said pump body (3).
2.- Bomba pulverizadora según la reivindicación 1 , caracterizada porque dicho cuerpo de bomba (3) presenta en dicho fondo (14) un repliegue centrado hueco (15) que se adentra en dicho tercer espacio interior hueco (24) de dicho cilindro (7) y que es atravesado, en sentido axial, por dicho tubo de comunicación (8) de tai manera que la superficie
externa de dicho tubo de comunicación (8) se apoya de una manera estanca sobre la superficie interna de dicho repliegue centrado hueco (15). 2. A spray pump according to claim 1, characterized in that said pump body (3) has in said bottom (14) a hollow centered withdrawal (15) that goes into said third hollow interior space (24) of said cylinder (7 ) and which is crossed, axially, by said communication tube (8) in such a way that the surface external of said communication tube (8) rests in a sealed manner on the internal surface of said hollow centered fold (15).
3.- Bomba pulverizadora según las reivindicaciones 1 ó 2, caracterizada porque dicho cuerpo de bomba (3) presenta, en su superficie interna, unos primeros nervios (22) con sus extremos, orientados en sentido opuesto a dicho fondo (14), aptos para encajar entre unos segundos nervios (23), ubicados en la superficie extema de dicho cilindro (7), con sus extremos orientados en sentido de dicho fondo (14).3.- Spray pump according to claims 1 or 2, characterized in that said pump body (3) has, on its inner surface, first ribs (22) with their ends, oriented in the opposite direction to said bottom (14), fit to fit between a few second ribs (23), located on the outer surface of said cylinder (7), with its ends oriented in the direction of said bottom (14).
4.- Bomba pulverizadora según la reivindicación 2, caracterizada porque dicho repliegue centrado hueco (15) presenta, en su superficie externa, unos primeros nervios con sus extremos, orientados en sentido opuesto a dicho fondo (14), aptos para encajar entre unos segundos nervios ubicados en la superficie interna de dicho cilindro (7), con sus extremos orientados en sentido de dicho fondo (14). 4. Spraying pump according to claim 2, characterized in that said hollow centered withdrawal (15) has, on its outer surface, first ribs with their ends, oriented in the opposite direction to said bottom (14), suitable to fit between a few seconds nerves located on the inner surface of said cylinder (7), with its ends oriented in the direction of said bottom (14).
5.- Bomba pulverizadora según por lo menos una de las reivindicaciones 1 a 4, caracterizada porque el extremo inferior interior de dicho cuerpo de bomba (3) presenta una superficie troncocónica (21), y porque el extremo inferior de dicho cilindro (7) es apto para apoyarse de una manera estanca sobre dicha superficie troncocónica (21 ). 5. A spray pump according to at least one of claims 1 to 4, characterized in that the inner lower end of said pump body (3) has a truncated conical surface (21), and because the lower end of said cylinder (7) It is suitable for resting in a sealed manner on said truncated conical surface (21).
6.- Bomba pulverizadora según por lo menos una de las reivindicaciones 3 a 5, caracterizada porque dicho resorte (9) se apoya sobre dichos extremos de dichos primeros nervios (22) y limita el movimiento en sentido axial de dichos segundos nervios (23).6. A spray pump according to at least one of claims 3 to 5, characterized in that said spring (9) rests on said ends of said first ribs (22) and limits axial movement of said second ribs (23) .
7.- Bomba pulverizadora según por lo menos una de las reivindicaciones 1 a 6, caracterizada porque dicho cilindro (7) dispone de una superficie transversal (25), sometida a la presión del fluido comprendido dentro de dicha cámara de bombeo (16).7. A spray pump according to at least one of claims 1 to 6, characterized in that said cylinder (7) has a transverse surface (25), subjected to the pressure of the fluid within said pumping chamber (16).
8.- Bomba pulverizadora según por lo menos una de las reivindicaciones 1 a 7, caracterizada porque dicho cilindro (7) dispone, en la superficie exterior del extremo parcialmente introducido en el segundo espacio hueco interior (19), de unas regatas (20) que comunican la cámara de bombeo (16) y el segundo espacio hueco interior (19) cuando el segundo pistón (6) se halla en el extremo extendido de su carrera.
8. A spray pump according to at least one of claims 1 to 7, characterized in that said cylinder (7) has, on the outer surface of the end partially inserted in the second inner hollow space (19), some regattas (20) which communicate the pumping chamber (16) and the second inner hollow space (19) when the second piston (6) is at the extended end of its stroke.
9.- Bomba pulverizadora según por lo menos una de las reivindicaciones 1 a 8, caracterizada porque el orificio de dicho repliegue centrado hueco (15) presenta por lo menos dos secciones transversales (26 y 27) de diferentes dimensiones, estando la sección transversal (26) de menor dimensión más próxima al tercer espacio interior hueco (24) mientras que las restantes por lo menos una secciones transversales (27) están dispuestas de menor a mayor en sentido contrario al del tercer espacio interior hueco (24) y porque dicho repliegue centrado hueco (15) dispone de una proyección (28) hacia el exterior de forma substancialmente cilindrica cuya superficie exterior presenta por lo menos una sección transversal.
9. A spray pump according to at least one of claims 1 to 8, characterized in that the orifice of said hollow centered fold (15) has at least two cross sections (26 and 27) of different dimensions, the cross section being ( 26) of smaller dimension closer to the third hollow interior space (24) while the remaining at least one cross sections (27) are arranged from least to greatest in the opposite direction to the third hollow interior space (24) and because said folding hollow centering (15) has a projection (28) towards the outside of substantially cylindrical shape whose outer surface has at least one cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU28381/99A AU2838199A (en) | 1998-05-18 | 1999-03-22 | Spraying pump |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ESP9801020 | 1998-05-18 | ||
| ES9801020 | 1998-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999059728A1 true WO1999059728A1 (en) | 1999-11-25 |
Family
ID=8303799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/ES1999/000073 WO1999059728A1 (en) | 1998-05-18 | 1999-03-22 | Spraying pump |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2838199A (en) |
| WO (1) | WO1999059728A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696924A (en) * | 2013-12-13 | 2014-04-02 | 中山市美捷时包装制品有限公司 | Convenient-to-connect atomizing pump mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0477083A1 (en) * | 1990-09-17 | 1992-03-25 | Societe Technique De Pulverisation (S.T.E.P.) | Precompression hand pump |
| EP0484773A1 (en) * | 1990-11-09 | 1992-05-13 | Ing. Erich Pfeiffer GmbH | Dispensing device for fluids |
| WO1993015845A1 (en) * | 1992-02-07 | 1993-08-19 | The Procter & Gamble Company | Spray pump package employing multiple orifices for dispensing liquid in different spray patterns with automatically adjusted optimized pump stroke for each pattern |
-
1999
- 1999-03-22 AU AU28381/99A patent/AU2838199A/en not_active Abandoned
- 1999-03-22 WO PCT/ES1999/000073 patent/WO1999059728A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0477083A1 (en) * | 1990-09-17 | 1992-03-25 | Societe Technique De Pulverisation (S.T.E.P.) | Precompression hand pump |
| EP0484773A1 (en) * | 1990-11-09 | 1992-05-13 | Ing. Erich Pfeiffer GmbH | Dispensing device for fluids |
| WO1993015845A1 (en) * | 1992-02-07 | 1993-08-19 | The Procter & Gamble Company | Spray pump package employing multiple orifices for dispensing liquid in different spray patterns with automatically adjusted optimized pump stroke for each pattern |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696924A (en) * | 2013-12-13 | 2014-04-02 | 中山市美捷时包装制品有限公司 | Convenient-to-connect atomizing pump mechanism |
| CN103696924B (en) * | 2013-12-13 | 2016-06-15 | 中山市美捷时包装制品有限公司 | A kind of atomizing pump mechanism easy to connect |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2838199A (en) | 1999-12-06 |
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