EP0289855B1 - Distributeur de fluides - Google Patents

Distributeur de fluides Download PDF

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Publication number
EP0289855B1
EP0289855B1 EP88106258A EP88106258A EP0289855B1 EP 0289855 B1 EP0289855 B1 EP 0289855B1 EP 88106258 A EP88106258 A EP 88106258A EP 88106258 A EP88106258 A EP 88106258A EP 0289855 B1 EP0289855 B1 EP 0289855B1
Authority
EP
European Patent Office
Prior art keywords
piston
chamber
pump
presuction
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88106258A
Other languages
German (de)
English (en)
Other versions
EP0289855A2 (fr
EP0289855A3 (en
Inventor
Lothar Graf
Karl-Heinz Fuchs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar Radolfzell GmbH
Original Assignee
Ing Erich Pfeiffer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ing Erich Pfeiffer GmbH filed Critical Ing Erich Pfeiffer GmbH
Priority to AT88106258T priority Critical patent/ATE77594T1/de
Publication of EP0289855A2 publication Critical patent/EP0289855A2/fr
Publication of EP0289855A3 publication Critical patent/EP0289855A3/de
Application granted granted Critical
Publication of EP0289855B1 publication Critical patent/EP0289855B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B05B11/1019—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element the inlet valve moving concurrently with the controlling element during whole pressure and aspiration strokes, e.g. a cage for an inlet valve ball being part of the controlling element
    • 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
    • B05B11/0005—Components or details
    • B05B11/0097—Means for filling or refilling the sprayer
    • 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 discharge device according to the preamble of patent claim 1.
  • the pump chamber can be surrounded by the pre-suction chamber in the form of a separate, cup-shaped chamber body inserted into the cylinder housing. This training has proven itself very well.
  • the invention has for its object to provide a discharge device of the type mentioned, which enables an even more compact and simple design.
  • the pre-suction chamber is at least partially surrounded by the pressure or pump chamber lying within the pump chamber.
  • the pump piston and the pre-suction piston mesh at least over part of their axial extent, so that the piston unit can be made very short.
  • the outer piston can be assigned to the preliminary piston as a piston raceway instead of an inner peripheral surface, so that the preliminary piston is constricted radially inward with increasing pressure in the pressure or pump chamber and thus seals particularly well.
  • the two pistons expediently have piston sleeves lying one inside the other with only a small gap spacing of the order of one to three tenths of a millimeter, so that the pump chamber can be almost completely emptied during each pump stroke and therefore a very precise metering of the amount of medium applied is ensured.
  • the two pistons lying one inside the other can be displaceably mounted to one another for actuating an outlet valve in the direction of the pump stroke, and the pre-suction piston can be actuated of an inlet valve can be composed of two parts which can be displaced relative to one another in the direction of the pump stroke.
  • the inlet valve located directly in the area of the pre-suction piston possibly operating in the manner of a slide control, serves as a transfer valve between the pre-suction chamber and the pressure or pump chamber, so that no separate inlet valve is required between the pre-suction chamber and the accumulator, but only an always open line connection given is.
  • a mechanically opened pressure relief connection is provided to vent the pump chamber in the stroke end position of the piston unit. If this pressure relief connection is formed by the stop-actuated opening of the outlet valve, then there is no need for a separate ventilation channel and the outlet valve can also be designed such that it opens when the pump chamber is filled with media under the pressures occurring during the pump stroke before the stroke end position is reached, so that the outlet valve is opened mechanically below a predetermined pressure and above a certain pressure by pressure difference.
  • the discharge device according to the invention can be designed in a simple manner so that it works equally well practically regardless of position and even in the overhead position when the piston unit is in the initial position, the storage device is prevented from leaking by the discharge device.
  • a discharge device 1 has a cylinder housing 3 which is substantially cylindrical over most of its length and which is to be fastened in a sealed manner to the neck of a vessel 5 provided as a store using a cap 4, for example a screw cap that it only engages in the neck of the vessel with a small gap distance and lies within this neck of the vessel over most of its length.
  • the cylinder housing 3 is provided at its outer or rear end with a ring flange 6 which is formed in one piece with it and projects radially beyond its outer circumference and with which it is clamped against the end face of the neck of the vessel with the interposition of a seal.
  • This outer end of the cylinder housing 3 is essentially closed with a cylinder cover 7, which has a sleeve extension engaging in the cylinder housing and an annular flange part lying in the ring flange 6, which is blown into the inner groove of the ring flange 6 from the outer end face and is thereby secured.
  • the outer end faces of the ring flange 6 and the cylinder cover 7 lie against an annular transverse wall 8 of the cap 4, with which the cylinder cover 7 can thus also be pressed into its sealing fastening position against the ring flange 6.
  • a piston unit 9 is slidably mounted, the two pistons 10 lying coaxially one inside the other, essentially cup-shaped and pointing to the inner end of the cylinder housing 3 with their cup openings, 11 as a working piston, namely an outer pump piston 10 and a pre-suction piston 11 located therein.
  • the inner end of the cylinder housing 3 forms a cylinder 12 with a piston raceway 13 for two annular sealing lips of the pump piston 10 lying one behind the other, which are provided in the region of both ends of this pump piston 10 and are expanded in the opposite shape of a truncated cone to sealing edges.
  • a pre-suction cylinder 15 projecting freely against the piston unit 9, which is formed in one piece with the cylinder housing 3 and protrudes from an annular bottom wall 18 which forms the inner end of the cylinder 12. From the outer end face of this bottom wall 18 there is a connecting piece, which delimits an inlet channel 19, for a riser pipe, for example, reaching as far as the bottom of the vessel 5.
  • the outer circumferential surface of the pre-suction cylinder 15 forms the piston track 16 for the pre-suction piston 11, which engages over the pre-suction cylinder 15 in each piston position in the manner of a slip and is guided on the piston track 16 with an annular sealing lip provided at its front end.
  • a substantially cylindrical piston shaft 21 is provided which is directly connected to the pump piston 10 or is formed in one piece, which passes through the cylinder cover 7 and the transverse wall 8 with a gap distance and an actuating head 22 is placed on its outer, reduced-diameter end is.
  • the tubular piston shaft 21 delimits one with the pump chamber 14 with the interposition of an outlet valve 23 connected outlet channel 24, which leads to an outlet opening 25 in the actuating head 22.
  • the actuating head 22 engages in a position in a collar of the cap 4 projecting from the transverse wall 8.
  • the end of the pre-suction piston 11 opposite the pre-suction chamber 14 is closed with an end wall which forms a frusto-conical valve closing part 26 of the outlet valve 23, the valve seat 27 of which lies in the associated end wall of the pump piston 10 connected to the piston shaft 21 at the inner end of the outlet channel 24 .
  • the pre-suction piston 11 or the valve closing part 26 is guided with an axially slotted shaft 28 in an axially displaceable section of the piston shaft 21 or the outlet channel 24 in such a way that the outlet valve 23 can be opened by shifting against the force of the return spring 20.
  • This section forms a neck 29 of the piston shaft 21, which is thin-walled and elastically compressible under bulging with respect to the remaining sections of the piston shaft lying between the pump piston 10 and the actuating head 22.
  • the valve closing part 26 forms radially outside the valve seat 27 a piston end face which is exposed to the pressure in the pump chamber 14 via the annular gap between the two working pistons and which is larger in area than the front, annular end face 30 of the pre-suction piston 11.
  • a transfer valve 32 is provided, which is opened and closed mechanically depending on the direction of movement of the piston unit 9 or the pre-suction piston 11 and is structurally combined with the pre-suction piston 11 in such a way that both its valve closing part 33 and its valve seat 34 is provided on the pre-suction piston 11.
  • the pre-suction piston 11 has a piston sleeve 35 which is formed by a separate component and is axially limited by a snap connection between an open and a closed position and is movably connected to the piston end wall or the valve closing part 26 of the exhaust valve 23.
  • This piston sleeve 35 which extends almost over the entire length of the corresponding piston sleeve 36 of the pumping piston 10, forms with its rear end face the valve-closing part 33, which is tapered in cross section toward the rear of the pump axis and which, as the valve seat 34, has an annular groove in the front that is complementary in cross section Face of the piston end wall is assigned.
  • piston sleeve 35 On the inner circumference of the piston sleeve 35 are several, radially resiliently distributed over the handling and in one piece from the piston end wall protruding snap members 38 with radially outwardly projecting snap cams which are assigned to an inner ring shoulder of the piston sleeve 35 which is provided as a link and are at a distance from the valve seat 34 such that the piston sleeve 35 axially forwards from the closed position engaging in the valve seat 34 to the stop the cam can be moved into an open position in which the transfer valve 32 in the region of the rear end of the pre-suction piston 11 releases a valve passage 39 between the pre-suction chamber 17 and the annular gap delimited by the piston sleeves 35, 36.
  • valve closing part 33 is pressed against the valve seat 34 due to the friction between the pre-suction piston 11 and the piston race 16, so that the pressure in the pump chamber 14 does not pass through the transfer valve 32 into the pre-suction chamber 17 can escape.
  • the valve closing part is again pulled out of the valve seat 34 as a result of the abovementioned friction, so that medium is sucked through the opened transfer valve 32 from the pre-suction chamber 17 into the pump chamber 14 as a result of the negative pressure building up in the pump chamber 14.
  • the piston shaft 21 forms a driver 40 which is formed in one piece with it and is located opposite the rear end of the shaft 28 and which, when the outlet valve 23 is closed, lies at a short distance from the counter surface of the valve closing part 26 or the shaft 28 formed by the rear end surface. If the pump piston 10 is in its stroke end position lying against the bottom wall 18, the neck 29 no longer lies within the cylinder cover 7, but over most of its length freely within the cylinder housing. If the actuating head 22 is now pressed further, the neck 29 is pressed through Compression widened or shortened, so that the driver 40 runs onto the shaft 28 and takes it along until the end face 30 of the pre-suction piston 11 is also fixed by limit stop on the bottom wall 18 when the transfer valve 32 is closed. In this case, the outlet valve 23 is then opened with a relatively small opening cross section, so that, if necessary, the pump chamber 14 can be effectively vented.
  • the cylinder cover 7 has longitudinal ribs 41 distributed evenly over the circumference, which at the rear ends merge into radial ribs on the outer end face of the annular flange part of the cylinder cover 7, the rib edges of which abut the transverse wall 8.
  • the front ends of the longitudinal ribs 41 are set back relative to the associated end of the sleeve extension of the cylinder cover 7, so that this end, which has a reduced diameter, can form a valve seat of a ventilation valve closed when the piston unit 9 is in its initial position, the valve closing part of which is connected to the piston end wall of the pump piston 10 by a valve , frustoconical portion of the piston skirt 21 is formed.
  • the vessel 5 is aerated via the ventilation valve, for which purpose 3 ventilation openings are provided behind the pump piston 10 in the wall of the cylinder housing, which are essentially covered by the sleeve extension of the cylinder cover 7.
  • the neck 29 Even if it does not have sufficient elasticity for stretching, is inevitably returned to its extended position or to its non-compressed position during the return stroke.
  • FIG. 4 the same reference numerals are used for corresponding parts as in the other figures, but with the index "a”.
  • the cylinder housing 3a is graduated in diameter such that an outer, Over the front wall of the cap 4a freely projecting housing part further and an inner, the cylinder 12a forming part is slimmer, the piston 10a is guided in the further part with its rear sealing lip, which is correspondingly larger in diameter than the front sealing lip guided in the cylinder 12a .
  • the cylinder housing 3a is formed in one piece with the cap 4a, with a sleeve part 42 formed in one piece with the cap 4a protruding from the inside of its end wall, which is tapered at the outer circumference to its end in an approximately conical angle such that instead of a separate seal under sealing pressure engages in the inner circumference of the neck of the vessel.
  • the sleeve part 42 surrounds the cylinder 12a at a distance, such that an annular groove open to the vessel is formed, the bottom surface of which is essentially delimited by an annular shoulder between the further and narrower part of the cylinder housing 3a. In this annular shoulder there are through openings 43 which connect the space behind the front piston lip of the pump piston 10a with the vessel.
  • longitudinal channels 44 are provided which connect to the through openings 43 and end in the initial position of the pump piston 10a in front of its rear piston lip.
  • Each longitudinal channel is formed by at least one longitudinal rib protruding over the inner circumference of the cylinder housing 3a and rising obliquely in the direction of the pump stroke at a flat angle, onto which the rear piston lip runs during the pump stroke and is dented radially inward so that the longitudinal rib passes through on both sides the elastic deformation of this piston lip openings are released.
  • the rear end of the cylinder housing 3a is not closed by a separate cylinder cover, but rather is delimited radially inward from the jacket of the cylinder housing 3a, for example by ultrasound angled jacket straps 7a, which serve as a stop for the pump piston 10a in the starting position.
  • the cylinder housing 3a has an annular collar projecting over its outer circumference at the outer end, over which the cap-shaped actuating head 22a with a corresponding annular collar provided on its inner circumference is fitted by resilient snapping on.
  • the transfer valve 32a is designed as a slide valve lying in the region of the front end of the pre-suction piston 11a, the valve closing part 33a of which is formed by the front piston lip of the pre-suction piston 11a.
  • transition openings 39a in the form of, for example, longitudinal slots, which in the initial position of the piston unit 9a are released by the valve closing part 33a in such a way that they establish a connection between the pre-suction chamber 17a and the pump chamber 14a.
  • the pumping piston 11a has a plunger 45 protruding freely forward and practically forming an extension of the shaft 28a, which strikes the bottom wall of the suction chamber 17a when the suction piston 11a is in the front end position, so that only very small stop forces act on the piston sleeve of the suction piston 11a Act.

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  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Nozzles (AREA)

Claims (10)

  1. Dispositif de soutirage destiné à des milieux, et en particulier à des liquides, comprenant une pompe (2) qui peut être actionnée à la main sur une course de pompage et sur une course de retour, respectivement, pour laquelle il est prévu un dispositif d'aspiration préliminaire comprenant une chambre d'aspiration préliminaire (17) située à l'intérieur, et dont la chambre de pompe (14) peut être reliée à une entrée en vue du remplissage à partir d'un réservoir, en étant aussi reliée, en vue du soutirage, à un canal de sortie (24) conduisant à une ouverture de sortie (25), cependant qu'un piston intérieur (11) et un piston extérieur (10) se recouvrent, du moins sur une partie de leur longueur, et qu'ils constituent des délimitations d'une chambre de pression (14) qui est annulaire en section transversale et qui est délimitée intérieurement par une surface périphérique extérieure (16), caractérisé par le fait que le piston intérieur (11) peut être guidé le long de la surface périphérique extérieure (16) du cylindre d'aspiration préliminaire (17), et que le piston extérieur (10) s'étend dans la chambre de pression annulaire (14), du moins dans une position.
  2. Dispositif de soutirage selon la revendication 1, caractérisé par le fait que la pompe qui est réalisée sous la forme d'une pompe à piston de poussée (2) comporte un carter de cylindre (3) comprenant un piston de pompe (10) d'un ensemble de piston (9) qui peut être déplacé dans un cylindre (12) le long d'une surface de glissement du cylindre (13) sur une course de pompage, depuis une position de départ (figure 1) jusque dans une position de fin de course, et qui délimite la chambre de pompe (14) dans le cylindre (12), cependant qu'est montée en amont de la chambre de pression (14), du côté de l'entrée, la chambre d'aspiration préliminaire (17) qui est munie d'un piston d'aspiration préliminaire (11), qui peut être reliée à la chambre de pompe (14) par l'intermédiaire d'un contournement (32) et qui est fermée par rapport à la chambre de pompe (14) lors de la course de pompage, et qu'en outre, de préférence, la chambre d'aspiration préliminaire (17) est entourée par la chambre de pompe qui constitue la chambre de pression (14) en étant située à l'intérieur de la chambre de pompe (14), du moins partiellement, et en constituant la surface périphérique extérieure (16), ou, respectivement, que le piston de pompe (10) et le piston d'aspiration préliminaire (11) constituent les pistons intérieur et extérieur (11, 10) qui sont situés à l'intérieur l'un de l'autre, du moins partiellement.
  3. Dispositif de soutirage selon la revendication 1 ou 2, caractérisé par le fait qu'un corps de chambre (15) qui constitue la surface périphérique extérieure (16) est situé dans la chambre de pression (14), de manière coaxiale pour l'essentiel, et qu'en particulier, le piston intérieur (11) est guidé sur une surface de glissement du piston qui est constituée par la surface périphérique extérieure (16) du corps de chambre (15), par le fait que, de préférence, le piston intérieur (11) comporte un manchon de piston (35) à peu près cylindrique qui est situé à l'intérieur d'un manchon de piston (36) du piston extérieur (10), sous la forme d'une pièce séparée et à une distance formant une fente, et par le fait que des lèvres d'étanchéité de piston prévues en particulier sur le pourtour extérieur du piston extérieur (10) et sur le pourtour intérieur du piston intérieur (11), sont prévues pour l'essentiel dans la même zone longitudinale du carter (3) du cylindre.
  4. Dispositif de soutirage selon l'une des revendications précédentes, caractérisé par le fait que le piston intérieur (11), en vue de l'actionnement d'une soupape de sortie (23), est monté coulissant par rapport au piston extérieur (10), ou sur celui-ci, respectivement, et qu'en particulier à l'extrémité arrière du manchon de piston (35), il forme une surface frontale de piston qui est plus grande qu'à l'extrémité avant, par le fait que, de préférence, l'extrémité arrière du piston intérieur (11) est fermée par une paroi frontale qui, en particulier sur le pourtour extérieur, forme une partie de fermeture de soupape (26) de la soupape de sortie (23) qui est à peu près en forme de tronc de cône et à laquelle est associé comme siège de soupape (27) un épaulement intérieur ménagé à l'extrémité arrière du piston extérieur (10), et par le fait que, de préférence, le piston intérieur (11) est guidé par une tige (28) prévue à son extrémité arrière dans un col tubulaire (29) formé à l'extrémité arrière du piston extérieur (10), ou, respectivement, qu'une tige (28) se raccorde directement à la partie de fermeture de soupape (26) de la soupape de sortie (23) et délimite par un col (29) une portion du canal de sortie (24), cependant que, de préférence, le col (29) qui peut être écrasé est réalisé d'un seul tenant avec la tige de piston (21) et/ou avec le piston extérieur (10), et que sa paroi est plus mince que les portions de tige voisines.
  5. Dispositif de soutirage selon l'une des revendications précédentes, caractérisé par le fait qu'un contournement situé entre la chambre d'aspiration préliminaire (17) et la chambre de pression (14) peut être fermé par une soupape de contournement (32) qui, en particulier, est ouverte au moins à la fin de la course de retour, et/ou qui est constituée directement par le manchon de piston (35), du moins partiellement, et qui comporte aussi, de préférence, deux parties de soupape (33, 34), en particulier annulaires, et pouvant être déplacées de préférence l'une par rapport à l'autre, dont l'une est constituée de préférence par le piston intérieur ou, respectivement, est située à une extrémité du manchon de piston associé (35), cependant que, de préférence, l'extrémité arrière du manchon de piston (35) du piston intérieur (11) est en prise avec la paroi frontale associée, de manière mobile et limitée axialement, par l'intermédiaire de profilés annulaires, en particulier en forme de coins, ou, respectivement, que le manchon de piston (35) est maintenu sur la paroi frontale par l'intermédiaire d'un assemblage à enclenchement (37) situé sur son pourtour intérieur, et que les profilés annulaires forment les parties de soupape de la soupape de contournement (32).
  6. Dispositif de soutirage selon l'une des revendications précédentes, caractérisé par le fait qu'un contournement situé entre la chambre d'aspiration préliminaire (17) et la chambre de pression (14) comporte une soupape à coulisse, et par le fait que, de préférence, des ouvertures de contournement (39a) ménagées dans l'extrémité libre du corps de chambre (15a) sont dégagées, à la fin de la course de retour, de la lèvre d'étanchéité de piston du piston intérieur (11) qui est prévue comme partie de fermeture (33a) de la soupape.
  7. Dispositif de soutirage selon l'une des revendications précédentes, caractérisé par le fait que la chambre d'aspiration préliminaire (17) est délimitée par un corps de chambre (15) qui fait librement saillie dans le carter (3) du cylindre et qui est entouré annulairement par la chambre de pression (14), et par le piston intérieur (11) qui est en prise avec celui-ci de manière télescopique, et qu'en particulier, un ressort de rappel (20) situé dans la chambre d'aspiration préliminaire (17) et destiné au piston extérieur (10) est disposé de façon à servir de ressort de fermeture pour la soupape de sortie (23), par le fait que, de préférence, la chambre de pression (14) est pourvue d'une liaison de détente qui conduit à l'air libre, qui est ouverte à force par voie mécanique à la fin de la course de pompage et qui est constituée, en particulier, par une ouverture de la soupape de sortie (23), laquelle est limitée et commandée par une butée, et par le fait que, de préférence, un organe d'entraînement (40) qui est prévu pour la partie de fermeture de soupape (26) de la soupape de sortie (23) et qui, à la fin de la course de pompage, entraîne la partie de fermeture (26) de la soupape par rapport au piston extérieur (10), est relié à une tête d'actionnement (22) destinée au piston extérieur (10), et qu'il est prévu, en particulier, sur le col (29) du piston extérieur (10) ou de la tige de piston (21), respectivement, lequel peut être raccourci par écrasement.
  8. Dispositif de soutirage selon l'une des revendications précédentes, caractérisé par le fait qu'un col (29) du piston extérieur (10), lequel peut être élargi par écrasement, est saisi par son pourtour extérieur, du moins partiellement, et empêché de s'élargir dans la position de départ de celui-ci, et qu'il est en particulier guidé en glissement sur la plus grande partie de sa longueur sur des nervures longitudinales (41) d'un couvercle de cylindre (7) du carter (3) du cylindre.
  9. Dispositif de soutirage selon l'une des revendications précédentes, caractérisé par le fait qu'en vue de l'aération du réservoir, il est prévu, dans une surface de glissement du piston, au moins un canal longitudinal (44) dont l'extrémité arrière est située, dans la position de départ, devant une lèvre de piston d'un ensemble de piston (9a), et dont l'extrémité avant est reliée de préférence au réservoir par l'intermédiaire d'une ouverture de passage (43) située dans un épaulement annulaire du carter (3a) du cylindre qui se raccorde à l'extrémité arrière de la chambre de pression (14a).
  10. Dispositif de soutirage selon l'une des revendications précédentes, caractérisé par le fait que l'extrémité arrière d'un carter (3a) du cylindre est délimitée par une pièce réalisée d'un seul tenant avec celui-ci, et, en particulier, par au moins une patte d'enveloppe coudée (7a) ou, respectivement, que la tête d'actionnement (22a) ferme par recouvrement l'extrémité arrière du carter (3a) du cylindre qui est librement en saillie, et par le fait que, de préférence, le carter (3a) du cylindre est réalisé d'un seul tenant avec un capuchon (4a), en vue de la fixation sur un col de récipient, et/ou avec une partie en forme de manchon (42) qui est prévue sous la forme d'une étanchéité.
EP88106258A 1987-05-08 1988-04-20 Distributeur de fluides Expired - Lifetime EP0289855B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88106258T ATE77594T1 (de) 1987-05-08 1988-04-20 Austragvorrichtung fuer medien.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873715301 DE3715301A1 (de) 1987-05-08 1987-05-08 Austragvorrichtung fuer medien
DE3715301 1987-05-08

Publications (3)

Publication Number Publication Date
EP0289855A2 EP0289855A2 (fr) 1988-11-09
EP0289855A3 EP0289855A3 (en) 1989-12-06
EP0289855B1 true EP0289855B1 (fr) 1992-06-24

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EP88106258A Expired - Lifetime EP0289855B1 (fr) 1987-05-08 1988-04-20 Distributeur de fluides

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US (1) US5011046A (fr)
EP (1) EP0289855B1 (fr)
AT (1) ATE77594T1 (fr)
DE (2) DE3715301A1 (fr)

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DE3929064A1 (de) * 1989-06-29 1991-01-10 Henkel Kgaa Handbetaetigbarer fluessigkeitszerstaeuber zur abgabe dosierter mengen
US5020696A (en) * 1989-11-27 1991-06-04 Rjs Industries, Inc. Atomizing fluid dispenser two
DE4035688A1 (de) * 1990-11-09 1992-05-14 Pfeiffer Erich Gmbh & Co Kg Austragvorrichtung fuer medien
FR2668958B1 (fr) * 1990-11-13 1994-05-20 Valois Dispositif de pulverisation ou de distribution de produit fluide, a aspiration du produit contenu dans le canal de sortie en fin d'actionnement.
DE4110304A1 (de) * 1991-03-28 1992-10-01 Pfeiffer Erich Gmbh & Co Kg Austragvorrichtung fuer medien
US5284276A (en) * 1992-10-21 1994-02-08 Bespak Plc Pump dispenser with combined inlet and outlet ports
US5458289A (en) * 1993-03-01 1995-10-17 Bespak Plc Liquid dispensing apparatus with reduced clogging
US5310089A (en) * 1993-03-22 1994-05-10 Hudgins Richard G Liquid dispensing system
US5388766A (en) * 1993-09-22 1995-02-14 The Procter & Gamble Company High pressure atomization systems for high viscosity products
DE69500501T2 (de) * 1994-02-03 1997-12-04 Bespak Plc Ausgabevorrichtung
US5800770A (en) * 1994-04-15 1998-09-01 Owens-Brockway Plastic Products Inc. Method of making a flexible tube
US5988443A (en) * 1994-04-15 1999-11-23 Owens-Brockway Plastic Products Inc. Flexible tube with pump dispenser and method of making
US5687878A (en) * 1994-04-15 1997-11-18 Owens-Brockway Plastic Products Inc. Flexible tube with pump dispenser and method of making
US5664706A (en) * 1994-10-13 1997-09-09 Bespak Plc Apparatus for dispensing liquid in aerosol spray form
US5655688A (en) * 1994-10-19 1997-08-12 Aptargroup, Inc. Atomizing pump with high stroke speed enhancement and valve system therefor
US6050457A (en) * 1995-12-06 2000-04-18 The Procter & Gamble Company High pressure manually-actuated spray pump
US5850948A (en) * 1996-09-13 1998-12-22 Valois S.A. Finger-operable pump with piston biasing post
DE19749514A1 (de) 1997-11-08 1999-05-12 Pfeiffer Erich Gmbh & Co Kg Verfahren zum Ausbringen von wenigstens zwei verschiedenen Medien und Spender dafür
US6358237B1 (en) 1999-01-19 2002-03-19 Assistive Technology Products, Inc. Methods and apparatus for delivering fluids to a patient
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CA2591046A1 (fr) 2007-06-08 2008-12-08 Gotohti.Com Inc. Mecanisme casse-vide pour soupapes a piston
ES2391155T3 (es) * 2008-05-28 2012-11-22 Nestec S.A. Bomba para dispositivos de preparación de bebidas líquidas
FR2950256B1 (fr) * 2009-09-21 2011-09-09 Ko Chuan Wei Accumulateur a double etancheite pour distributeur de parfum
WO2011106539A1 (fr) * 2010-02-24 2011-09-01 Colgate-Palmolive Company Couvercle distributeur comprenant des réservoirs sélectionnables
EP2900259B1 (fr) 2012-09-28 2020-04-15 Kline, Ellis Schéma posologique de glycosidase pour le traitement d'une maladie infectieuse
WO2014113641A1 (fr) 2013-01-18 2014-07-24 Kline Ellis Régime de glycosidase sélective pour la programmation immunitaire et le traitement du cancer
EP2939750A1 (fr) * 2014-04-29 2015-11-04 The Procter and Gamble Company Pompe de distributeur oscillant
US11035429B2 (en) 2018-01-03 2021-06-15 Silgan Dispensing Systems Corporation Compression spring assembly and methods of using the same
US10138971B1 (en) * 2018-01-03 2018-11-27 Silgan Dispensing Systems Corporation Dispensing pump with polymer compression spring assemby
US11236794B2 (en) 2018-01-03 2022-02-01 Silgan Dispensing Systems Corporation Dispensing pump with polymer spring, base venting and flow baffle
US10870123B2 (en) 2018-01-03 2020-12-22 Silgan Dispensing Systems Corporation Dispensing pump with locking structures and methods of using the same
US10473176B2 (en) 2018-01-03 2019-11-12 Silgan Dispensing Systems Corporation Compression spring assembly and methods of using the same
US10794445B2 (en) 2018-01-03 2020-10-06 Silgan Dispensing Systems Corporation Dispensing pump with polymer compression spring assembly
US10526191B1 (en) 2018-09-27 2020-01-07 Silgan Dispensing Systems Corporation Dispensing tap and methods for using the same
US11312613B2 (en) 2018-09-27 2022-04-26 Silgan Dispensing Systems Corporation Dispensing tap and methods for using the same
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CN116539818B (zh) * 2023-06-27 2023-12-19 唐山市燃气集团有限公司 一种臭气浓度检测系统及方法

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Also Published As

Publication number Publication date
ATE77594T1 (de) 1992-07-15
US5011046A (en) 1991-04-30
EP0289855A2 (fr) 1988-11-09
EP0289855A3 (en) 1989-12-06
DE3715301A1 (de) 1988-11-24
DE3872303D1 (de) 1992-07-30

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