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EP2004997A1 - Pompe de circulation et dispositif d'étanchéité qui l'accompagne - Google Patents

Pompe de circulation et dispositif d'étanchéité qui l'accompagne

Info

Publication number
EP2004997A1
EP2004997A1 EP07723397A EP07723397A EP2004997A1 EP 2004997 A1 EP2004997 A1 EP 2004997A1 EP 07723397 A EP07723397 A EP 07723397A EP 07723397 A EP07723397 A EP 07723397A EP 2004997 A1 EP2004997 A1 EP 2004997A1
Authority
EP
European Patent Office
Prior art keywords
piston
seals
pump housing
feed pump
intermediate space
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.)
Withdrawn
Application number
EP07723397A
Other languages
German (de)
English (en)
Inventor
Andreas Schmidt
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.)
SKF Lubrication Systems Germany GmbH
Original Assignee
Lincoln 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 Lincoln GmbH filed Critical Lincoln GmbH
Publication of EP2004997A1 publication Critical patent/EP2004997A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • F04B53/164—Stoffing boxes

Definitions

  • Feed pumps are used, among other things, for pumping UV inks and other high-viscosity media.
  • such media which harden, for example, by polymerization at high temperatures or in contact with other media
  • the sealing arrangement between see the piston and the pump housing particularly high demands are to be made.
  • the friction between the piston and the pump housing must be largely avoided in order to avoid polymerization of, for example, UV inks due to a friction increased temperature.
  • Delivery pumps with conventional sealing arrangements are particularly suitable for pumping of UV inks and the like strongly prone to polymerization media only limited.
  • the feed pump according to the invention is therefore particularly suitable for pumping UV inks and the like of highly viscous media, even if they are highly prone to polymerization.
  • the life of the seals can be significantly increased by the lubrication and / or cooling of the seal assembly and the piston.
  • the at least two seals, between which the intermediate space is provided are formed as groove rings.
  • annular gap or a groove between the piston and the pump housing is defined.
  • the coolant and / or lubricant flow from the coolant and / or lubricant reservoir, thereby minimizing the friction and to lower the temperature of the piston and the seal assembly.
  • the piston and the intermediate space of the pump housing located between the two seals are designed in such a way that a negative pressure is created in the intermediate space during an axial displacement movement of the piston. This makes it possible that the cooling and / or lubricant is sucked in small quantities from the external container. During operation of the feed pump, coolant and / or lubricant is thus automatically conducted to the seal arrangement and the piston of the feed pump. An additional drive for the lubricant supply can thus be omitted.
  • connection of the feed pump to a coolant and / or lubricant container is preferably carried out in that the between the at least two seals lying gap of the pump housing via a bore or the like in the pump housing and a line connected thereto with the coolant and / or lubricant reservoir is flow connected ,
  • the intermediate space of the pump housing located between the two seals may also be provided with a solvent container be fluidly connected.
  • the piston and / or the seal assembly are wetted with a solvent, so that the risk of hardening of the medium to be pumped is additionally reduced. It is preferred if, for example, special oils are used as coolants and lubricants, which are mixed with a solvent additive.
  • the gap of the pump housing between the two seals must therefore only be connected to a single container in order to reduce the friction and the temperature while at the same time reducing the risk of hardening of the medium to be pumped.
  • the pump housing is essentially formed by a cylindrical tube, which is closed at one end by the intake valve designed as a check valve and at its opposite end by a connection head.
  • This structure of the pump housing is particularly simple and therefore enables an economical production of the feed pump.
  • the pump housing has a connection head in which the piston is guided and in which the exhaust valve designed as a check valve is arranged.
  • the piston can be guided in a screw-in sleeve of the connection head, in which also the at least two seals are accommodated.
  • the object underlying the invention is further achieved by a seal arrangement which is particularly suitable for a feed pump of the type mentioned, and the one in a sleeve-like component led piston or the like, wherein in the sleeve-like member at least two seals are arranged spaced from each other such that formed between the seals flow-connected with a coolant and / or lubricant reservoir space whose inner diameter is at least partially increased such that a annular gap or a groove between the piston and the sleeve-like component is defined.
  • a seal arrangement which is particularly suitable for a feed pump of the type mentioned, and the one in a sleeve-like component led piston or the like, wherein in the sleeve-like member at least two seals are arranged spaced from each other such that formed between the seals flow-connected with a coolant and / or lubricant reservoir space whose inner diameter is at least partially increased such that a annular gap or a groove between the piston and the sleeve
  • the piston and the gap lying between the two seals of the sleeve-like component of the seal assembly are formed such that at an axial displacement movement of the piston in the intermediate space an at least low negative pressure is created, which is suitable for sucking a medium from the cooling and / or lubricant container into the gap is sufficient.
  • a coolant and / or lubricant can be promoted automatically in this way during a movement of the piston in the seal assembly.
  • the single FIGURE shows a schematic sectional view of the structure of a feed pump 1.
  • This feed pump is formed by a designed as a substantially cylindrical tube pump housing 2, whose lower side in the figure is closed by an inlet valve designed as a check valve 3.
  • the inlet valve 3 is designed and arranged such that a flow into the pump housing 2 is made possible while a flow is blocked out of the pump housing 2.
  • the pump housing 2 is sealed sealed by a connection head 4.
  • connection head 4 into which a screw-in sleeve 6 is screwed sealed.
  • screw-6 two spaced-apart seals 7a and 7b are provided, which are formed as a grooved rings.
  • a piston 8 is slidably guided in the screw-6 in the axial direction of the pump housing 2 and sealed from the environment by the two seals 7 a and 7 b.
  • the piston 8 can be moved vertically upward from a position shown in the figure, so that a negative pressure is created in the pump housing 2.
  • the exhaust valve 5 closes and the intake valve 3 opens against the force of a spring or the like, whereby a medium, for example a UV ink or other highly viscous medium, into the pump housing 2 inside is sucked.
  • the inlet valve 3 is closed again.
  • the outlet valve 5 opens against the force of a spring or the like, and a medium can be conveyed out of the pump housing 2 through the outlet valve 5.
  • the intermediate space of the screw-6 between the two seals 7a and 7b is designed such that the inner diameter of the screw 6 increases at least partially.
  • a groove 12 is provided on the inside of the screw 6.
  • the groove 12 is arranged in such a way in the screw-6 that it is connected via the bore 9 with the line 10 and thus with the container 11 in connection.
  • the gap between the two seals 7a and 7b can also be formed as an annular gap or in another suitable manner, so that a sufficient negative pressure is generated during a movement of the piston 8, to aspirate a medium, such as a coolant or lubricant, from an external container 11 via a conduit 10 into the seal assembly.
  • a medium such as a coolant or lubricant

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

La présente invention concerne une pompe de circulation, en particulier pour le pompage de couleurs UV et d'autres fluides très visqueux, avec un boîtier de pompe (2) auquel on associe une soupape d'entrée (3) et une soupape de sortie (5), et avec un piston (8) logé de manière mobile dans le boîtier de pompe (2) pour faire circuler un fluide. Afin d'améliorer le colmatage et les temps passés à l'arrêt, on prévoit de guider le piston (8), au moins dans une partie (4) du boîtier de pompe (2), de manière étanche par rapport à l'environnement grâce à au moins deux joints (7a, 7b) situés en direction axiale du piston (8) l'un derrière l'autre, entre lesquels un espace intermédiaire (12), en particulier à la manière d'une fente, est formé en liaison de circulation avec un réservoir de refroidissement et/ou à lubrifiant (11).
EP07723397A 2006-04-13 2007-03-20 Pompe de circulation et dispositif d'étanchéité qui l'accompagne Withdrawn EP2004997A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202006006221U DE202006006221U1 (de) 2006-04-13 2006-04-13 Förderpumpe und Dichtungsanordnung hierfür
PCT/EP2007/002430 WO2007118568A1 (fr) 2006-04-13 2007-03-20 Pompe de circulation et dispositif d'étanchéité qui l'accompagne

Publications (1)

Publication Number Publication Date
EP2004997A1 true EP2004997A1 (fr) 2008-12-24

Family

ID=36710250

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07723397A Withdrawn EP2004997A1 (fr) 2006-04-13 2007-03-20 Pompe de circulation et dispositif d'étanchéité qui l'accompagne

Country Status (10)

Country Link
US (1) US20110020157A1 (fr)
EP (1) EP2004997A1 (fr)
JP (1) JP2009533586A (fr)
KR (1) KR20080108158A (fr)
CN (1) CN101432521A (fr)
AU (1) AU2007237587A1 (fr)
DE (1) DE202006006221U1 (fr)
RU (1) RU2008144666A (fr)
WO (1) WO2007118568A1 (fr)
ZA (1) ZA200809046B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5706850B2 (ja) * 2012-05-21 2015-04-22 株式会社丸山製作所 往復動ポンプ
WO2014095897A1 (fr) * 2012-12-21 2014-06-26 Tetra Laval Holdings & Finance S.A. Piston et utilisation d'un tel piston
CN110142172B (zh) 2013-07-19 2021-10-08 固瑞克明尼苏达有限公司 喷射系统泵清洗方法
CN103669809A (zh) * 2013-12-10 2014-03-26 昆山诺瑞信机械设备有限公司 一种自动涂料喷涂器
CN105041598B (zh) * 2015-08-27 2017-08-01 武汉市海泰伟创科技有限公司 一种油浸式洗发水柱塞泵
US10465678B2 (en) 2016-02-05 2019-11-05 Graco Minnesota Fluid pump leakage diversion
GB201609228D0 (en) * 2016-05-25 2016-07-06 Colormatrix Holdings Inc Polymeric materials
IT201600064747A1 (it) * 2016-07-19 2018-01-19 Interpump Group S P A Pompa a pistoni
CN106074168B (zh) * 2016-08-10 2023-05-02 山东新马制药装备有限公司 液料硬胶囊充填装置
CN110494680B (zh) * 2017-04-11 2022-06-03 乌多·塔勒 用于密封和抽空具有粘稠的液体的容器的设备
KR101825938B1 (ko) * 2017-08-30 2018-03-22 이현출 접착성 액체용 열선 펌프

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
US587846A (en) * 1897-08-10 Sash for windows
US1577555A (en) * 1922-12-14 1926-03-23 Warren E Beadle Process and apparatus for regulating paper stock and the like
FR587846A (fr) * 1924-03-31 1925-04-24 Ehrhardt & Sehmer Ag Perfectionnement apporté aux presse-étoupe pour hautes pressions
US2330781A (en) * 1941-05-28 1943-09-28 Standard Oil Dev Co Conveying fluids containing solids
US2678609A (en) * 1948-03-06 1954-05-18 Emsco Mfg Company Lubricating and sealing means
US2710778A (en) * 1952-06-13 1955-06-14 United States Steel Corp Bearing chocks for rolling mills
JPS4898632A (fr) * 1972-03-27 1973-12-14
US3943717A (en) * 1974-01-07 1976-03-16 Caterpillar Tractor Co. Contaminant removal from a hydraulic cylinder
US4086029A (en) * 1976-12-06 1978-04-25 United States Steel Corporation Method and apparatus for flushing the plunger of a positive displacement pump
US4174929A (en) * 1977-03-11 1979-11-20 Dudin Jury A High pressure pump
DE2911517C2 (de) * 1979-03-23 1981-07-09 Siemens AG, 1000 Berlin und 8000 München Teilnehmeranschlußschaltung mit Erdtasten- und Isolationsfehlerindikation
GB2287758B (en) * 1994-03-19 1998-06-24 Hydrair Ltd Pumps for shear sensitive material
US20060045782A1 (en) * 2004-08-27 2006-03-02 Lincoln Industrial Corporation Low-friction reciprocating pump

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007118568A1 *

Also Published As

Publication number Publication date
AU2007237587A1 (en) 2007-10-25
WO2007118568A1 (fr) 2007-10-25
DE202006006221U1 (de) 2006-07-06
US20110020157A1 (en) 2011-01-27
ZA200809046B (en) 2009-11-25
KR20080108158A (ko) 2008-12-11
JP2009533586A (ja) 2009-09-17
CN101432521A (zh) 2009-05-13
RU2008144666A (ru) 2010-05-20

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