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
• • 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
  • B05B11/1042—Components or details
  • B05B11/1073—Springs
  • B05B11/1074—Springs located outside pump chambers

Definitions

• the present invention relates to a dispenser pump according to the preamble of claims 1 and 12, respectively.
• the term “donation pump” is to be understood in particular as a metering pump or manually operated pump for dispensing liquids, such as washing lotions for cleaning the human body, body care products, cleaning products, cosmetics, but also lubricants or the like.
• EP 0 806 249 B1 which forms the starting point of the present invention, discloses a dispensing pump for dispensing liquid from a container.
• a pump housing can be fastened to the container and holds a pump shaft, which can be pressed manually against spring force into the pump housing by a user pressing a dispenser button attached to the pump shaft.
• Two sleeve sections are attached between the pump housing and the dispenser head to protect against splashing water and can be pushed into one another.
• the return spring is arranged in the usual way in a pump cavity through which the liquids to be pumped flow.
• the present invention is based on the object of specifying a dispensing pump which is suitable for viscous, aggressive liquids, in particular where a compact and robust construction with protection against splash water can be achieved.
• a first aspect of the present invention is that the dispenser pump has at least one further sleeve section which adjoins the second sleeve section towards the pump housing and can be pushed into it, so that three or more sleeve sections have a telescopically extendable splash guard around the pump shaft between the Form the pump housing and the dispenser head.
• a second aspect of the present invention which can also be implemented independently, is to arrange a spring provided for resetting the pump shaft radially outside the pump shaft and / or between the pump housing and the dispenser head, that is to say outside of areas that come into contact with the liquid to be pumped , This can prevent the spring, which is usually made of metal, from being attacked by the increasingly aggressive liquids.
• a check valve in particular its valve ball, is preferably also made of plastic. This can prevent aggressive liquids from attacking the dispenser pump and / or metal ions being absorbed by the liquids and contaminating them. All parts of the dispensing pump that come into contact with the liquid are preferably metal-free, in particular made of plastic.
• the illustrated dispensing pump 1 serves to dispense liquid 2, such as a washing lotion for cleaning the human body, a body care product, a cleaning product or the like.
• the liquid 2 can in particular be relatively viscous and / or aggressive.
• the Spende ⁇ umpe 1 is assigned a container 3, to which the Spende ⁇ umpe 1 is detachably attached if necessary.
• the container 3 can be replaced and / or the liquid 2 can be refilled.
• the dispenser pump 1 has a pump housing 4, which can be fastened to the container 3 - in the example shown by means of a collar or thread section 5, which is preferably directly molded on.
• the dispenser pump 1 further has a pump shaft 6 and a dispenser head 7 arranged at the free end thereof.
• the pump shaft 6 can be pressed in manually against the force of a spring 8 which brings about the resetting.
• the spring 8 biases the pump shaft 6 with the dispenser head 7 upward into a starting position in the illustration.
• the dispensing pump 1 has a suction nozzle 9 which is connected to the liquid to be pumped or extends into it, with a suction hose or the like connected to it, not shown, an inlet or remindstakventil 10 with a valve ball 11, a delivery chamber 12 and a pump piston 13.
• the pump piston 13 can be moved back and forth in the delivery chamber 12 by means of the pump shaft 6, up and down in the illustrated example, the pump piston 13 being able to be displaced relative to the pump shaft 6 to a limited extent in order to alternately open and close through openings 14 into the interior 15 of the hollow pump shaft 6 or in some other way a valve device is realized, so that liquid 2 is sucked into the delivery chamber 12 when the pump piston 13 moves upwards and liquid 2 is pressed or conveyed through the interior 15 of the pump shaft 6 when the pump piston 13 moves down and is fed via the dispenser head 7.
• EP 0 806 249 B1 which is hereby fully introduced as a supplementary disclosure, which is also essential to the invention.
• the dispensing pump 1 has a first sleeve section 16, a second sleeve section 17 and a third sleeve section 18, which can be telescopically pushed or pulled out and radially surround the pump shaft 6 - spaced apart in the example shown.
• the first sleeve section 16 extends from the dispenser head 7 to the pump housing 4 and is in particular molded onto or attached to the dispenser head 7.
• the first sleeve section 16 surrounds or engages around the second sleeve section 17, which in turn surrounds or engages the third sleeve section 18 peripherally.
• the third sleeve section 18 is held by the pump housing 4, in particular firmly connected to it, preferably molded onto it.
• the dispensing pump 1 is usually used for a standing container 3, so that the axis of the pump shaft 6 or the pump movement runs essentially vertically. That overlap each other from top to bottom the sleeve sections 16, 17, 18 form an effective protection, in particular against splash water, but possibly also against dust or the like, so that penetration of splash water, dust or the like between the movable or displaceable - possibly also rotatable - pump shaft 6 and the pump housing 4 or a slide guide 19 of the pump housing 4 for the pump shaft 6 can be effectively prevented.
• the first sleeve section 16 has an inner projection 20 on its end region adjacent to or free from the second sleeve section 17 , which engages behind an outer projection 21 on the second sleeve section 17, and the second sleeve section 17 on its end region adjacent to the third sleeve section 18 has an internal projection 22 which engages behind an outer projection 23 on the third sleeve section 18.
• the inner projections 20, 22 and or the outer projections 21, 23 are preferably designed as ring shoulders, ring webs, cone sections or the like, preferably continuously around the circumference, in order on the one hand to provide a positive engagement in the axial direction against axial separation of the sleeve sections 16 to 18 and on the other hand to form a labyrinth seal for effective protection against splashing water or the like.
• the ring surfaces of the inner protrusions 20, 22 and / or the outer protrusions 21, 23 which converge on one another when the sleeve sections 16, 17, 18 are axially inserted into one another are preferably bevelled or conical in order to form insertion bevels which facilitate the assembly, so that the sleeve sections 16, 17, 18 can be pushed into one another, in particular by latching or snapping.
• the inner protrusions 20, 22 and / or the outer protrusions 21, 23 may not be continuous over the entire circumference, but may only be formed in regions or sections over the circumference.
• the sleeve sections 16, 17, 18 can also be constructed by other against slipping out completely, for example through recesses on the wall, individual noses or other measures.
• the sleeve sections 16, 17, 18 are preferably of essentially hollow cylindrical cross section with a circular cross section.
• the sleeve sections 16, 17, 18 can also have other cross-sectional shapes, for example a polygonal, elliptical or oval cross-section or another, also irregular cross-sectional shape.
• the figure shows the dispensing pump 1 with the pump shaft 6 extended, that is to say in the starting position.
• the pump shaft 6 is pressed into the pump housing 4.
• the sleeve sections 16, 17, 18 are pushed into one another or overlap and overlap one another at least substantially over the same axial length.
• the ratio of the axial length in the retracted state to the total axial length of the sleeve sections 16, 17, 18 in the extended state is significantly smaller than in the prior art, so that for a given pump stroke (difference between the extended state and the retracted state) a significantly smaller one axial height of the dispenser pump 1 compared to the prior art can be realized.
• the spring 8 is preferably made of metal, in particular spring steel, as usual. In the example shown, it is designed as a coil spring.
• the spring 8 is arranged radially outside the pump shaft 6 and between the pump housing 4 and the dispenser head 7. In contrast to the prior art, the spring 8 does not come into contact with the liquid 2. Accordingly, the spring 8 cannot be attacked by aggressive liquids.
• the spring 8 is covered by the sleeve sections 16, 17, 18 and thereby protected from splashing water and the like.
• the spring 8 is supported on the one hand on the dispenser head 7 and on the other hand on the pump housing 4.
• the spring 8 is preferably attached to a guide sleeve 24 held by the pump housing 4, which extends from the pump housing 4 approximately to the length of the third sleeve section 18 to the dispenser head 7 and an annular seal on the inside in the region of its free end 25 holds, which forms the aforementioned slide guide 19 for the pump shaft 6.
• the spring 8 is thus arranged in the region of its lower or housing-side end in the annular space between the guide sleeve 24 and the third sleeve section 18, otherwise in the annular space between the pump shaft 6 and the other guide sleeves 16, 17.
• valve 10 in particular its valve ball 11, is preferably made of plastic. With an appropriate choice of plastic, it can be avoided that increasingly aggressive liquids 2 attack the valve ball 11.
• all parts or areas of the dispensing pump 1 which come into contact with the liquid 2 are made of suitable plastic, so that no metal parts come into contact with the increasingly aggressive liquids 2.
• the proposed dispensing pump 1 is suitable for dispensing viscous and aggressive liquids 2.
• the diameter of the delivery chamber 12 and the pump piston 13, which has a significant influence on the stiffness of the dispenser pump 1, is chosen to be sufficiently small, in particular for viscous or highly viscous liquids 2, to enable the dispenser pump 1 to be actuated sufficiently easily.
• the pump stroke is extended accordingly.
• the sleeve sections 16, 17, 18 which can be telescopically pushed into one another provide Based on a specific pump stroke, the axial height or length of the dispensing pump 1, which is considerably lower than in the prior art, can be realized.
• three sleeve sections 16, 17, 18 are provided. Of course, four or more sleeve sections can also be provided if required.
• a bellows-type protective element (not shown) or the like can also be provided if necessary to protect against splashing water.

Landscapes

• Reciprocating Pumps (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Details Of Reciprocating Pumps (AREA)
• Closures For Containers (AREA)
• Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=34530077

Family Applications (1)

Country Status (8)

Families Citing this family (5)

Family Cites Families (19)

• 2003
  • 2003-10-31 DE DE10351288A patent/DE10351288B3/de not_active Expired - Lifetime
• 2004
  • 2004-10-29 CN CNB2004800321859A patent/CN100518952C/zh active Active
  • 2004-10-29 ES ES04791060T patent/ES2295942T3/es active Active
  • 2004-10-29 AT AT04791060T patent/ATE380601T1/de active
  • 2004-10-29 WO PCT/EP2004/012304 patent/WO2005042172A1/fr active IP Right Grant
  • 2004-10-29 EP EP04791060A patent/EP1677917B1/fr active Active
  • 2004-10-29 DE DE502004005724T patent/DE502004005724D1/de active Active
  • 2004-10-29 US US10/595,405 patent/US7819291B2/en active Active
  • 2004-10-29 CA CA2544103A patent/CA2544103C/fr active Active

Non-Patent Citations (1)

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