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EP2002121B1 - Pompe a piston pour substances epaisses - Google Patents

Pompe a piston pour substances epaisses Download PDF

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Publication number
EP2002121B1
EP2002121B1 EP07723523A EP07723523A EP2002121B1 EP 2002121 B1 EP2002121 B1 EP 2002121B1 EP 07723523 A EP07723523 A EP 07723523A EP 07723523 A EP07723523 A EP 07723523A EP 2002121 B1 EP2002121 B1 EP 2002121B1
Authority
EP
European Patent Office
Prior art keywords
feed
piston
piston pump
pressure
ring
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.)
Not-in-force
Application number
EP07723523A
Other languages
German (de)
English (en)
Other versions
EP2002121A1 (fr
Inventor
Matthias Stabel
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.)
Putzmeister Concrete Pumps GmbH
Original Assignee
Putzmeister Solid Pumps 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 Putzmeister Solid Pumps GmbH filed Critical Putzmeister Solid Pumps GmbH
Publication of EP2002121A1 publication Critical patent/EP2002121A1/fr
Application granted granted Critical
Publication of EP2002121B1 publication Critical patent/EP2002121B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the invention relates to a Piston pump for thick materials with at least one motorized or hydraulically driven delivery piston containing delivery cylinder having a mouth opening, which communicates in accordance with the movement of the delivery piston slide-controlled alternately with the interior of a material feed container and with a pressure conveying line.
  • Piston pumps of this type are used for conveying solid-liquid mixtures with a high solids content, such as sewage sludge, coal sludge, biomass or concrete. Such thick materials have a high internal friction, so that the degree of filling of the delivery cylinder often leaves something to be desired during the suction process.
  • piston pumps of this type EP-B-633 863
  • piston pumps of this type in the promotion of thick materials to reduce the wall friction at the entrance of the pressure conveying line to introduce a lubricant between the slurry strand and the wall of the pressure conveying line. This is usually done continuously and proportionally to the flow in metered quantity, with the result that forms an interface between the pipe inner wall and the thick matter strand through which the delivery pressure can be reduced.
  • a pre-pressing device is usually provided in the region of the material supply container, with which the filling pressure can be increased by at least 1 bar. In many cases, however, this is not enough.
  • the present invention seeks to improve the known piston pump for thick materials in that even at high Solid contents in the thick material of the degree of filling in the delivery cylinder can be significantly increased.
  • the solution according to the invention is based on the idea that in the region of the orifice, an annular nozzle opening into the delivery cylinder is arranged, which is connected to an external pressure line, wherein the pressure line can be acted upon by a high-pressure pump with a lubricant.
  • the pressure line is connected via a arranged in the mouth region of the delivery cylinder bore to an opening into the annular nozzle annular channel.
  • a preferred structural embodiment of the invention provides that the delivery cylinder carries an outer ring having at least one leading to the annular nozzle ring channel outside the pressure line connected to the bore, wherein the annular channel on the inside by an outer surface of the delivery cylinder or an axially adjacent to this inner ring and is bounded on the outside by an inner surface of the outer ring.
  • said inner ring engages in an inwardly open recess of the outer ring and limits together with this the annular channel and the annular nozzle.
  • the inner ring is advantageously clamped with a rear, radially projecting collar between two mutually facing annular surfaces of the delivery cylinder and the outer ring body.
  • the annular channel expediently has at least one annular Cross-sectional expansion before.
  • two spaced apart annular cross-sectional extensions are provided.
  • control valve responsive to the position and / or the stroke direction of the delivery piston in the delivery cylinder control means and arranged in the pressure line, responsive to an output of the control means control valve is provided which opens during the suction stroke of the delivery piston and closes before the pressure stroke.
  • the control valve is expediently formed as preferably via the delivery piston magnetically controllable directional control valve.
  • a preferred embodiment of the invention provides that two in each case an annular nozzle having delivery cylinder are provided in its mouth region, the annular nozzles are acted upon by the control valve with lubricant during each suction stroke of the push-pull controlled delivery piston.
  • the invention also relates to a method for operating a piston pump for thick materials, in which in a suction stroke thick matter material is sucked into a delivery cylinder open on one side and pressed in a subsequent pressure stroke from the delivery cylinder in a pressure conveying line.
  • a lubricant be injected into the delivery cylinder with each suction stroke.
  • the lubricant is advantageously injected into the separation area between the thick material and delivery cylinder inner surface, over its entire circumference.
  • the lubricant injection is interrupted during the pressure stroke appropriate.
  • the lubricant is injected with an overpressure relative to the thick stock arranged in the delivery cylinder.
  • the injection pressure is expediently more than 50, preferably about 100 bar, during the prepressing pressure in the thick material at the suction stroke is appropriate at about 2 bar.
  • a preferred embodiment of the invention provides that in the case of a two-cylinder piston pump, the piston in a first and a second delivery cylinder are driven in push-pull execution of a suction stroke and a pressure stroke, wherein in the delivery cylinder at each suction stroke, a lubricant is injected and the lubricant injection is interrupted during the respective printing stroke.
  • the lubricant layer forming in the delivery cylinder is taken into the pressure feed line, so that in a first line section adjoining the thick matter pump an additional lubricant injection is dispensed with. Only with long pressure conveying lines with more than 50 to 100 m in length can be injected at a distance from the sludge pump additional lubricant in the pressure conveying line. While the lubricant is injected into the delivery cylinder only during the suction stroke, the lubricant injection into the delivery conduit should be continuous.
  • FIG. 1 schematically illustrated two-cylinder slurry pump is intended to promote solids-rich thick matter, such as partially dewatered sewage sludge, coal dust sludge or concrete.
  • the piston pump consists essentially of a material feed container 10, two with their frontal orifices 12 via wall openings 14 connected to the material feed container 10 feed cylinders 16, two in the feed cylinders 16 in push-pull via hydraulic drive cylinder 18 drivable delivery piston 20 and one between the drive cylinders 18 and the delivery cylinders
  • a pipe slide 21 is arranged, which is connected with its inlet opening 26 alternately to the mouth opening 12 of the delivery cylinder whose piston performs a pressure stroke, and the mouth opening 12 of the other delivery cylinder whose piston performs a suction stroke, leaves free, and the outlet opening 28 is connected via a arranged on the material supply container 10 discharge nozzle 30 to a pressure conveying line, not shown.
  • the pipe slide 24 has a pivotable within the material feed container 10, S-shaped curved pivot tube. Accordingly, at each suction stroke high-viscosity material from the interior of the material feed container 10 optionally under the exercise of a pre-pressure on the open mouth opening 12 in the respective delivery cylinder 16, while in the other delivery cylinder 16, there located thick material through the delivery piston 20 under execution of a pressure stroke on the pivot tube the pipe slide 24 and the discharge nozzle 30 is pressed into the subsequent pressure conveying pipe.
  • a special feature of the invention is that in the region of the mouth opening 12, an annular nozzle 32 is arranged, which can be acted upon by pressure pipes 34 holes 36 and an annular channel 38 with a lubricant under a pressure of about 50 to 100 bar.
  • an inner tube 40 which is overlapped by an outer tube 42 screwed onto the delivery cylinder 16, adjoins the delivery cylinder 16 in the region of the orifice opening 12 axially.
  • the inner ring 40 on a radially projecting collar 44 which is clamped between an annular surface 46 of the outer tube 42 and the end face annular surface 48 of the conveyor cylinder 16 so that the annular nozzle 32 and the annular channel 38 between the inner tube and outer tube remains open.
  • the holes 36 for the lubricant supply are arranged in the outer tube 42.
  • the inner tube 40 has on its annular surface 38 bounding the inner surface of two annular grooves, which form a cross-sectional widening 50 and provide for a uniform distribution of the exiting from the annular nozzle 32 lubricant over the circumference.
  • an external, not shown, control device is controlled so that only in the suction stroke lubricant is injected into the delivery cylinder.
  • the lubricant passes there in the separation area between the thick material and delivery cylinder inner surface, so that the degree of filling is improved due to the reduced sliding friction.
  • an improvement of the degree of filling of at least 25% can be achieved with the inventive measures in solids-rich sewage sludge.
  • the lubricant with the thick material passes into the pressure line and also there reduces the sliding friction and thus the delivery pressure required for material transport.
  • the lubricant injection is interrupted in each case. This is the danger of a Leersaugens avoided the Gleitmiteltechnisch by passing thick matter.
  • the invention relates to a piston pump for thick materials, in particular for solids-rich sewage sludge, coal sludge and concrete.
  • the piston pump has at least one delivery cylinder 16 containing a motor-driven or hydraulically driven delivery piston 20, which has an orifice opening 12 which, in accordance with the movement of the delivery piston 20, alternately communicates with the interior of a material feed container 10 and with a pressure delivery line 30.
  • an annular nozzle 32 which opens into the delivery cylinder 16 in the region of the discharge opening 12 is provided, which is connected to an external pressure line 34 that can be acted upon by a lubricant.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Claims (12)

  1. Pompe à piston pour substances épaisses, munie d'au moins un cylindre de refoulement (16) qui renferme un piston refouleur (20) à entraînement motorisé ou hydraulique, et présente un orifice d'embouchure (12) communiquant en alternance avec commande par tiroir, selon l'ampleur du mouvement dudit piston refouleur (20), avec l'espace interne d'un récipient (10) de délivrance de matière et avec un conduit de refoulement sous pression (raccord de pression 30), caractérisée par le fait qu'une buse annulaire (32), débouchant dans le cylindre de refoulement (16) et raccordée à au moins un conduit extérieur de pression (34), est disposée dans la région de l'orifice d'embouchure (12) ; par le fait que ledit conduit de pression (34) peut être sollicité par un agent de glissement, par l'intermédiaire d'une pompe haute pression, et est raccordé à un canal annulaire (38) débouchant dans ladite buse annulaire (32) ; et par le fait que ledit cylindre de refoulement (16) porte un corps annulaire extérieur (42) offrant au moins un alésage (36) raccordé audit conduit de pression (34), extérieurement, par ledit canal annulaire (38) menant à ladite buse annulaire (32).
  2. Pompe à piston selon la revendication 1, caractérisée par le fait que le canal annulaire (38) est délimité, intérieurement, par une surface extérieure du cylindre de refoulement ou d'une tubulure intérieure (40) raccordée axialement à ce dernier ; et, extérieurement, par une surface intérieure du corps annulaire extérieur (42).
  3. Pompe à piston selon la revendication 1 ou 2, caractérisée par le fait qu'une tubulure intérieure (40), se raccordant frontalement au cylindre de refoulement (16), pénètre dans un évidement ouvert vers l'intérieur, pratiqué dans le corps annulaire extérieur (42), et délimite le canal annulaire (38) et la buse annulaire (32) en coopération avec ledit corps.
  4. Pompe à piston selon l'une des revendications 1 à 3, caractérisée par le fait que la section transversale du canal annulaire (38) comporte au moins un évasement annulaire (50).
  5. Pompe à piston selon la revendication 4, caractérisée par le fait que la section transversale du canal annulaire (38) comprend deux évasements annulaires (50) placés à distance l'un de l'autre.
  6. Pompe à piston selon l'une des revendications 1 à 5, caractérisée par un dispositif de commande réagissant à l'emplacement et/ou au sens de la course du piston refouleur (20), dans le cylindre de refoulement (16) ; et par une vanne de commande logée dans le conduit de pression (34) et répondant à un signal de sortie dudit dispositif de commande.
  7. Pompe à piston selon la revendication 6, caractérisée par le fait que, sous l'action du dispositif de commande, la vanne de commande logée dans le conduit de pression (34) s'ouvre lors de la course d'aspiration du piston refouleur (20), et se ferme avant la course de pression de celui-ci.
  8. Pompe à piston selon la revendication 6 ou 7, caractérisée par le fait que la vanne de commande est réalisée sous la forme d'un distributeur pouvant être activé, de préférence en mode magnétique, par l'intermédiaire du piston refouleur (20).
  9. Pompe à piston selon l'une des revendications 1 à 8, caractérisée par la présence de deux cylindres de refoulement (16) respectivement pourvus d'une buse annulaire (32), dans leur zone d'embouchure (12), et dont les buses annulaires (32) peuvent être alimentés en agent de glissement, par le biais de la vanne de commande, lors de chaque course d'aspiration des pistons refouleurs (20) activables en opposition symétrique.
  10. Pompe à piston selon l'une des revendications 1 à 9, caractérisée par le fait que la tubulure intérieure (40) est enserrée, par un collet postérieur (44) en saillie dans le sens radial, entre deux surfaces annulaires (46, 48) du cylindre de refoulement (16) et du corps annulaire extérieur (42), tournées l'une vers l'autre.
  11. Procédé d'actionnement d'une pompe à piston pour substances épaisses, dans lequel un matériau épais est alternativement aspiré, lors d'une course d'aspiration, dans un cylindre de refoulement (16) ouvert d'un côté, puis pressé hors dudit cylindre de refoulement, lors d'une course successive de pression, pour parvenir dans un conduit de refoulement sous pression, caractérisé par le fait qu'un agent de glissement est injecté dans ledit cylindre de refoulement (16) durant chaque course d'aspiration, ledit agent de glissement étant injecté, sur l'intégralité du pourtour de la surface intérieure du cylindre de refoulement, dans la zone de séparation entre ledit matériau épais et ladite surface intérieure dudit cylindre de refoulement.
  12. Procédé selon la revendication 11, caractérisé par le fait que l'injection de l'agent de glissement est interrompue durant la course de pression.
EP07723523A 2006-04-04 2007-03-23 Pompe a piston pour substances epaisses Not-in-force EP2002121B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006016083A DE102006016083A1 (de) 2006-04-04 2006-04-04 Kolbenpumpe für Dickstoffe
PCT/EP2007/002572 WO2007115665A1 (fr) 2006-04-04 2007-03-23 Pompe a piston pour substances epaisses

Publications (2)

Publication Number Publication Date
EP2002121A1 EP2002121A1 (fr) 2008-12-17
EP2002121B1 true EP2002121B1 (fr) 2010-10-13

Family

ID=38102553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07723523A Not-in-force EP2002121B1 (fr) 2006-04-04 2007-03-23 Pompe a piston pour substances epaisses

Country Status (8)

Country Link
US (1) US20100232996A1 (fr)
EP (1) EP2002121B1 (fr)
JP (1) JP5202512B2 (fr)
CN (1) CN101410619A (fr)
AT (1) ATE484676T1 (fr)
CA (1) CA2647794A1 (fr)
DE (2) DE102006016083A1 (fr)
WO (1) WO2007115665A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3105252A1 (fr) 2019-12-23 2021-06-25 Syctom L'agence Metropolitaine Des Dechets Menagers Dispositif d’injection sous haute pression d’une ressource organique
FR3105207A1 (fr) 2019-12-23 2021-06-25 Syctom L'agence Metropolitaine Des Dechets Menagers Dispositif d’injection sous haute pression d’un mélange humide
FR3112089A1 (fr) 2020-07-02 2022-01-07 Commissariat A L'energie Atomique Et Aux Energies Alternatives Dispositif d’injection sous haute pression d’un effluent

Families Citing this family (11)

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Publication number Priority date Publication date Assignee Title
CN102460760B (zh) 2009-06-03 2014-08-27 富士胶片株式会社 光电转换元件，其制备方法，光传感器，成像装置及其驱动方法
KR101083802B1 (ko) * 2009-06-29 2011-11-18 주식회사 맥스텍 용액 공급 방법
JP5680324B2 (ja) * 2010-03-30 2015-03-04 三菱重工環境・化学エンジニアリング株式会社 固形物圧送装置及び固形物圧送方法
WO2013116902A1 (fr) 2012-02-07 2013-08-15 Commonwealth Scientific And Industrial Research Organisation Réduction du frottement d'un écoulement de fluide visqueux dans un conduit
AU2014343119B2 (en) * 2013-10-29 2017-11-02 Thermtech Holdings As System for feeding and pumping of less pumpable material in a conduit line
US9216536B2 (en) 2014-01-17 2015-12-22 Kolmar Laboratories, Inc. Piston-based extrusion for viscous products
CN104266061A (zh) * 2014-09-19 2015-01-07 中建三局集团有限公司 混凝土输送管路润滑装置及方法
EP3706891B1 (fr) * 2017-11-07 2022-06-22 SABIC Global Technologies B.V. Utilisation d'un système de piston pour la production d'agglomerats d'une composition elastomere
JP7292275B2 (ja) * 2018-07-18 2023-06-16 株式会社ニチレイフーズ 定量分割ユニット、定量分割方法及び食品製造方法
CN109372712A (zh) * 2018-11-06 2019-02-22 能诚集团有限公司 泵送装置
EP4308817A1 (fr) * 2021-03-17 2024-01-24 Circlia Nordic ApS Système de pompage pour convertisseurs de biomasse thermochimiques

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US2330781A (en) * 1941-05-28 1943-09-28 Standard Oil Dev Co Conveying fluids containing solids
NL129372C (fr) * 1960-08-08
JPS5066204U (fr) * 1973-10-18 1975-06-14
US4510958A (en) * 1982-05-06 1985-04-16 E. I. Du Pont De Nemours And Company Apparatus and method for transferring a Bingham solid through a long conduit
DE3605723A1 (de) * 1986-02-22 1987-08-27 Uhde Gmbh Verfahren und vorrichtung zur foerderung von fest-fluessig-gemischen
JPS63121782U (fr) * 1987-02-02 1988-08-08
US5002025A (en) * 1990-06-18 1991-03-26 Crouse William H Lubricating oil permeable cylinder wall ring
DE4211138A1 (de) * 1992-04-03 1993-10-07 Putzmeister Maschf Vorrichtung zur Förderung von feststoffreichen Dickstoffen
JPH0625563U (ja) * 1992-09-01 1994-04-08 石川島建機株式会社 揺動弁型粘性流体ポンプのバルブリング
DE59305912D1 (de) * 1993-02-02 1997-04-24 Putzmeister Maschf Verfahren zum fördern von vorzerkleinerten metallschrott oder dergleichen festkörper enthaltenden dickstoffen
DE10036202A1 (de) * 2000-07-24 2002-02-07 Putzmeister Ag Dickstoffpumpe
JP4083470B2 (ja) * 2002-05-30 2008-04-30 古河機械金属株式会社 ピストンポンプの逆流防止装置の摺動部潤滑機構

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3105252A1 (fr) 2019-12-23 2021-06-25 Syctom L'agence Metropolitaine Des Dechets Menagers Dispositif d’injection sous haute pression d’une ressource organique
FR3105207A1 (fr) 2019-12-23 2021-06-25 Syctom L'agence Metropolitaine Des Dechets Menagers Dispositif d’injection sous haute pression d’un mélange humide
WO2021130444A1 (fr) 2019-12-23 2021-07-01 Syctom L'agence Metropolitaine Des Dechets Menagers Dispositif d'injection sous haute pression d'un mélange humide
WO2021130445A1 (fr) 2019-12-23 2021-07-01 Syctom L'agence Metropolitaine Des Dechets Menagers Dispositif d'injection sous haute pression d'une ressource organique
FR3112089A1 (fr) 2020-07-02 2022-01-07 Commissariat A L'energie Atomique Et Aux Energies Alternatives Dispositif d’injection sous haute pression d’un effluent

Also Published As

Publication number Publication date
JP2009532616A (ja) 2009-09-10
CN101410619A (zh) 2009-04-15
ATE484676T1 (de) 2010-10-15
CA2647794A1 (fr) 2007-10-18
US20100232996A1 (en) 2010-09-16
DE502007005346D1 (de) 2010-11-25
EP2002121A1 (fr) 2008-12-17
DE102006016083A1 (de) 2007-10-11
JP5202512B2 (ja) 2013-06-05
WO2007115665A1 (fr) 2007-10-18

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