EP0584453B1 - Feststoffpumpe - Google Patents

Feststoffpumpe Download PDF

Info

Publication number
EP0584453B1
EP0584453B1 EP93106872A EP93106872A EP0584453B1 EP 0584453 B1 EP0584453 B1 EP 0584453B1 EP 93106872 A EP93106872 A EP 93106872A EP 93106872 A EP93106872 A EP 93106872A EP 0584453 B1 EP0584453 B1 EP 0584453B1
Authority
EP
European Patent Office
Prior art keywords
pump
valve member
valve
piston
shut
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
EP93106872A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0584453A1 (de
Inventor
Matthias Dipl.-Ing. Hahn
Volker Dipl.-Ing. Stapelfeldt
Jörg-Peter Dipl.-Ing. Zöllner
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.)
Abel & Co Handels- and Verwaltungsgesellschaft GmbH
Abel GmbH and Co KG
Original Assignee
Abel & Co Handels- and Verwaltungsgesellschaft GmbH
Abel GmbH and Co KG
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 Abel & Co Handels- and Verwaltungsgesellschaft GmbH, Abel GmbH and Co KG filed Critical Abel & Co Handels- and Verwaltungsgesellschaft GmbH
Publication of EP0584453A1 publication Critical patent/EP0584453A1/de
Application granted granted Critical
Publication of EP0584453B1 publication Critical patent/EP0584453B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • 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 solids pump according to the preamble of claim 1.
  • Solid-state pumps of the generic type are used, for example, to transport municipal and industrial mechanically dewatered sludges, for backfilling and back-mortaring in mining, for reactor loading in process technology, for the promotion of intermediate products and residues from the chemical industry, and for the promotion of residues from the petroleum and mineral oil industry , but also from the paper industry. They can also be used for highly viscous materials with coarse materials, such as Biomass from pressed fruit or slaughter waste in the rendering of carcasses as well as for dry substances such as paper, straw, fiber-containing substances and manure.
  • a solids pump of the type mentioned has become known from DE 25 09 081.
  • a delivery piston interacts with a cylinder, which is arranged below a loading container.
  • a vacuum is created in the cylinder which sucks in the medium as soon as the delivery plunger has left the cylinder.
  • the front end of the cylinder is kept closed by a slide valve.
  • the piston moves into the cylinder and the slide valve opens the pressure line so that the piston can push the medium into the line.
  • the slide valve closes the pressure line and shears off all residues from the front of the piston.
  • the plate-shaped shut-off element is guided in a metal-sealing manner.
  • the structure and function of the known shut-off device have some disadvantages. Since it can not be prevented that solids, especially abrasive substances, in the guide area high wear can result. It is therefore necessary to replace several wear parts from time to time. The penetration of solids into the guide area can restrict the function of the pump. For example, fabrics can collect below the square slider, which can be damaged due to the impact. Substances can also accumulate above the plate-shaped shut-off element, which impairs proper operation.
  • the invention is therefore based on the object of providing a solids pump whose shut-off valve operates with low wear, consists of a few wear parts and has a high level of functional reliability.
  • the plate-shaped shut-off element is not guided without play by means of suitable guide surfaces, as is the case with the known pump described at the outset, but with play.
  • On the side opposite the feed cylinder are spaced guide sections in the direction of movement of the shut-off element provided that engage the shut-off device.
  • Limited guide sections can also be provided on the narrow sides of the shut-off element so that it is guided in its plane, albeit with play.
  • the shut-off device can be articulated on an actuating rod, which in turn, however, has no guiding function for the shut-off device.
  • the shut-off device On the side facing the delivery cylinder, the shut-off device interacts with a tube section forming the outlet opening, as a result of which a seal and a guide are produced at the same time. It is based on the knowledge that in the event of the return stroke of the delivery piston and the establishment of a vacuum in the cylinder, the shut-off device is pressed against the pipe section and thereby brings about the seal. Solid particles possibly present on the end face of the pipe section, which impair a seal, are stripped off by the knife-like edge of the shut-off element during its movement into the closed position.
  • the shut-off element is located in a space of the valve housing which is freely accessible from the outlet opening of the cylinder.
  • the penetration of medium into this housing space is therefore consciously accepted.
  • this is not annoying because only partially engage the guide sections on the shut-off device and guide it with play so that the shut-off device does not have to be jammed. Wear in the guide area is also minimal.
  • shut-off valve of the pump according to the invention works reliably. It is made up of a few wear parts and requires relatively little manufacturing effort.
  • an embodiment of the invention provides that a sealing arrangement for the actuating rod is provided on the housing.
  • a seal is not a problem and can be, for example, a known stuffing box seal.
  • the guide sections are linear with the Interact with the shut-off device.
  • cylindrical guide pins can be provided, the cylindrical surface of which cooperate with the shut-off device. If the guide pin is provided with a collar, this can carry out a lateral guidance of the shut-off element with its end face.
  • the guide pins are preferably screwed into a threaded bore in the wall of the valve housing, so that they can be easily dismantled at any time if wear has occurred.
  • the free edge of the shut-off element provided with a knife edge is preferably at a distance from the associated wall of the valve housing. According to one embodiment of the invention, it is convex in the form of a circular arc, its radius being matched to the radius of the outlet opening. Accordingly, it is also advantageous if the inner wall of the housing facing the free or shearing edge has a concave shape with a somewhat larger radius than that of the shearing edge.
  • the knife edge of the shut-off element acts with the facing surface of a guide plate together, from which the delivery piston has a small distance in its forward position.
  • the gate valve interacts with the end face of a pipe section.
  • a pipe section stands freely in the valve housing and, according to a further embodiment of the invention, is preferably formed by a separate section which is sealingly received in an opening in the valve housing. This pipe section is a wearing part that can be easily replaced.
  • the shut-off valve 10 shown in FIGS. 1 and 2 has an upright housing 12 of essentially rectangular cross section. Only those in the conveying direction (arrow R) rear wall is shown slightly inclined.
  • the housing 12 is located at the end of a delivery cylinder 17, in which a hydraulically operated delivery piston 19 is arranged, as is described in detail in DE 25 09 081 (the delivery piston 19 is shown in thin lines in its forward position).
  • the feed cylinder 17 ends at a pipe section 14, which is arranged sealingly in an opening in the wall facing the feed cylinder 17.
  • the pipe section 14 receives the feed cylinder 17, so that a cylindrical passage of the same diameter is formed into the interior of the housing.
  • the pipe section 15 forms an outlet opening 16 for the feed cylinder 17, which is aligned with an opening 18 in a flange 20 which is attached to the housing 12 and to which a pressure line can be flanged.
  • the passage from the opening 16 to the opening 18 can be blocked by a plate-shaped shut-off device 22.
  • the shut-off device 22 is rectangular in the upper region and rounded in a circular arc at the lower edge.
  • an arcuate knife edge 26 results which interacts with the end face of the tube section 14.
  • the knife edge 26 is at a distance from the lower wall 28 of the housing 12, which, as can be seen in FIG. 2, has a concave inside with a radius that is somewhat larger than the radius of the knife edge 26.
  • the shut-off element 22 is articulated with the aid of a pin 30 in a fork 32 of an actuating rod 34 with play, which is guided upwards out of the housing 12 via a gland seal arrangement 36.
  • the hydraulic actuation of the actuation rod 34 takes place by means of the drive cylinder 15.
  • cylindrical guide pins 40 are also arranged at a distance from one another, which cooperate with the side of the shut-off element 22 facing away from the pipe section 14.
  • the structure of the guide pin 40 is shown in more detail in FIG. 2. They have a cylindrical outer section 42 which cooperates with the facing side of the shut-off element 22.
  • An adjoining threaded section 46 is seated in a threaded bore 48 of the housing 12.
  • the pins 40 have one Head 50, which can be gripped by a tool and rests against the outer wall of the housing 12. Accordingly, the shut-off device 22 is guided in a line-like manner on the side facing away from the pipe section 14 and also only partially at the side, so that medium can penetrate into the space 38 between the guide pin 40 without, however, impairing the guidance, because the individual guide surfaces have the shut-off device 22 with play to lead.
  • the guide takes place through the end face of the tube section 14, which at the same time also forms a seal when a negative pressure is generated in the cylinder during the return stroke of the delivery piston.
  • the pipe section 14 is a wearing part that can be replaced quickly and easily.
  • a single-piston solid-state pump is shown, which can be filled from above via a filler neck 50. It is understood that the shut-off valve shown can also be used for two-piston pumps of the type mentioned.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
EP93106872A 1992-05-23 1993-04-28 Feststoffpumpe Expired - Lifetime EP0584453B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4217204A DE4217204C2 (de) 1992-05-23 1992-05-23 Feststoffpumpe
DE4217204 1992-05-23

Publications (2)

Publication Number Publication Date
EP0584453A1 EP0584453A1 (de) 1994-03-02
EP0584453B1 true EP0584453B1 (de) 1996-05-08

Family

ID=6459644

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93106872A Expired - Lifetime EP0584453B1 (de) 1992-05-23 1993-04-28 Feststoffpumpe

Country Status (3)

Country Link
EP (1) EP0584453B1 (ja)
JP (1) JPH0681764A (ja)
DE (2) DE4217204C2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7600960B2 (en) 2001-08-11 2009-10-13 Christensen Lena H Method for transfer of particulate solid products between zones of different pressure

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2319981A (en) * 1941-12-03 1943-05-25 James H Fitzgerald Pump for concrete and the like
GB1436555A (en) * 1972-09-01 1976-05-19 F R Eng Co Ltd Valve forfluent material
CH568481A5 (ja) * 1974-03-18 1975-10-31 Seiler Niklaus
US4693452A (en) * 1986-03-12 1987-09-15 Triten Corporation Valve
DE3915980C1 (en) * 1989-05-17 1990-07-19 Metalpraecis Berchem + Schaberg Gesellschaft Fuer Metallformgebung Mbh, 4650 Gelsenkirchen, De Shut-off slide housing - has removable lid, inlet and sealed outlet adjoined by slide plate and connected operating rod

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7600960B2 (en) 2001-08-11 2009-10-13 Christensen Lena H Method for transfer of particulate solid products between zones of different pressure

Also Published As

Publication number Publication date
DE4217204C2 (de) 1994-04-14
DE4217204A1 (de) 1993-11-25
EP0584453A1 (de) 1994-03-02
JPH0681764A (ja) 1994-03-22
DE59302498D1 (de) 1996-06-13

Similar Documents

Publication Publication Date Title
EP1303700B1 (de) Dickstoffpumpe
DE2509081C2 (de) Dickstoffpumpe
DE1910093A1 (de) Farbspritzanlage
DE3211037A1 (de) Selbsttaetige einrichtung zum einspritzen von beize in fleisch
EP0681672B2 (de) Verfahren zum fördern von vorzerkleinerten metallschrott oder dergleichen festkörper enthaltenden dickstoffen
DE102017116777B3 (de) Zerkleinerungsmaschine
DE2929237A1 (de) Hydraulisch-bzw. pneumatisch arbeitende, kombinationsgesteuerte verschlussvorrichtung fuer wohnungs- und buerotueren, bzw. fuer gepanzerte tueren
EP0584453B1 (de) Feststoffpumpe
EP0402390A1 (de) Steuerungsanordnung für eine zweizylinder-dickstoffpumpe.
DE3410211C2 (ja)
EP0036945B1 (de) Vorrichtung zum Fördern von fliessfähigen Medien
DE1653605A1 (de) Kolbenpumpe zum Foerdern von aus kleinen Feststoffteilchen bestehendem Gut
DE9208276U1 (de) Feststoffpumpe
DE1503334A1 (de) Hydraulische Vorrichtung zum Erzeugen einer hin- und hergehenden Bewegung
DE60105131T2 (de) Hydraulisches stellglied
DE2742405A1 (de) Ziehapparat mit sperrvorrichtung
DE69420713T2 (de) Durch druckmittel angetriebene vorrichtung die eine lineare bewegung ausführt
EP1163111B1 (de) Verfahren zur volumenreduzierung von leergut sowie pressvorrichtung für leergut
DE102018132704A1 (de) Vorrichtung zur Förderung von Dickstoff
DE19524048C2 (de) Pumpe zur Förderung nicht fließfähiger Medien
DE102016114680A1 (de) Vorrichtung zum Erzeugen eines pulsierenden Hydraulikfluiddruckes
EP0213419B1 (de) Steuerschieber für Dickstoffpumpen
EP4219943A1 (de) Kolbenpumpe
DE1675491B1 (de) Ventil fuer breiige Massen,insbesondere Beton
DE2552828A1 (de) Kolbensandpumpe

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB NL

17P Request for examination filed

Effective date: 19940214

17Q First examination report despatched

Effective date: 19950831

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB NL

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960513

REF Corresponds to:

Ref document number: 59302498

Country of ref document: DE

Date of ref document: 19960613

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19970428

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19971101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970428

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980101

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19971101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST