EP0539373A1 - Vorrichtung zur förderung von dickstoffen. - Google Patents
Vorrichtung zur förderung von dickstoffen.Info
- Publication number
- EP0539373A1 EP0539373A1 EP91903812A EP91903812A EP0539373A1 EP 0539373 A1 EP0539373 A1 EP 0539373A1 EP 91903812 A EP91903812 A EP 91903812A EP 91903812 A EP91903812 A EP 91903812A EP 0539373 A1 EP0539373 A1 EP 0539373A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- finger
- conveying
- lamellae
- support ring
- conveying direction
- 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.)
- Granted
Links
- 239000000126 substance Substances 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000010802 sludge Substances 0.000 claims abstract description 4
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 229910000639 Spring steel Inorganic materials 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract 2
- 238000005086 pumping Methods 0.000 abstract 1
- 241000446313 Lamella Species 0.000 description 4
- 239000000945 filler Substances 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- 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
- F04B53/10—Valves; Arrangement of valves
- F04B53/1037—Flap valves
- F04B53/1047—Flap valves the valve being formed by one or more flexible elements
- F04B53/106—Flap valves the valve being formed by one or more flexible elements the valve being a membrane
- F04B53/1067—Flap valves the valve being formed by one or more flexible elements the valve being a membrane fixed at its whole periphery and with an opening at its centre
-
- 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
- F04B53/10—Valves; Arrangement of valves
- F04B53/1077—Flow resistance valves, e.g. without moving parts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
- Y10S417/90—Slurry pumps, e.g. concrete
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7854—In couplings for coaxial conduits, e.g., drill pipe check valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7879—Resilient material valve
- Y10T137/788—Having expansible port
- Y10T137/7882—Having exit lip
- Y10T137/7885—Multiple slit
Definitions
- Device for conveying thick matter, sludge and the like conveyed material with a preferably oscillating thick matter pump, a pressure line connected to the thick matter pump and a conveying line arranged in the conveying line, which enables the passage of the conveyed material in the conveying direction and at least in the opposite direction partially blocking restraining device.
- a device of this type is already known, in which a hydraulically actuated flat slide valve, which is controlled by the piston movement and which releases and releases the outlet opening during the pressure stroke of the piston, is arranged at the outlet opening of a thick matter pump designed as a single-piston pump closes during the suction stroke, so that backflow of the conveyed goods is prevented.
- Such devices require a relatively complex control.
- the flat slide valve does not have a sufficient service life because the abrasive material to be conveyed causes high wear on the moving slide parts.
- the invention is based on the object of improving the device of the type specified at the outset in such a way that the retaining element works without control and largely without wear.
- the features specified in the characterizing part of claim 1 are proposed according to the invention. Further advantageous refinements and developments of the invention result from the dependent ones. Claims.
- the invention is based on the idea that a retaining member with an elastically expanding material under the action of the conveying material flowing in the conveying direction and which automatically narrows when the conveying material flow stops or is directed against the conveying direction is hardly susceptible to wear and also manages without control .
- the passage opening of the retaining member is advantageously formed by a central opening and a plurality of slot openings which extend from the central opening in a star shape obliquely against the delivery direction to the inner surface of the delivery line.
- the passage opening of the retaining member in the case of rectangular delivery line cross-sections can be formed by a gap opening and a plurality of slot openings which extend substantially parallel to the opening from the gap obliquely against the conveying direction and extend to the inner surface of the delivery line.
- finger lamellae can be provided with rectangular delivery line cross sections preferably at a lateral distance and parallel to each other arranged finger lamellae of the type mentioned.
- a preferred embodiment of the invention provides that the free ends of the finger lamellae can be bent open by the material to be conveyed flowing in the conveying direction while widening the passage opening to the inner wall of the conveying line, and that the bent free ends of the finger lamellae with narrowing of the conveying material flow which stops or is directed against the conveying direction Passage opening are automatically bendable back into their blocking position.
- the finger slats expediently consist of a flat material made of spring steel or of a spring-elastic plastic material which is curved convexly in the direction of the central opening. Overlaps at the free ends or slot openings that are too wide in the region of the clamped ends of the star-shaped finger lamellae can be avoided by cutting the finger lamellae essentially in the form of a wedge.
- the finger slats In order to prevent the finger slats from jamming or rubbing against one another, they are expedient with the narrow slot openings between them being left free their mutually facing lateral boundary surfaces arranged at a distance from each other.
- the free ends of the relaxed finger lamellae can also be arranged at a distance from one another, leaving a small central opening free.
- the retaining member has two groups of finger lamellae arranged at a short distance from one another in the conveying direction, the finger lamellae in one group advantageously each having the slot openings between the finger lamellae cover the other group at least partially
- the adjacent finger slats can rest in a relaxed state with their mutually facing lateral boundary surfaces, with the slot openings being closed off from one another.
- a further advantageous embodiment of the invention then provides that at least two of the front ends of the relaxed finger slats rest against one another with the central opening completely closed.
- the installation of the retaining element in the delivery line can be simplified in that the finger lamellae are attached to the inside of a support ring that can be inserted into the delivery line in the area of a pipe coupling.
- the support ring can expediently be clamped in the axial direction between mutually opposite end faces of two pipe sections of the delivery line which can be coupled to one another.
- the delivery line can have a conically tapering inner cross section in front of the support ring and a step-like widening in the area of the support ring.
- finger blades made of spring steel are expediently screwed tightly to a rigid support ring or vulcanized into a support ring made of rubber-elastic material
- finger blades made of plastic can be formed in one piece with a support ring also made of plastic.
- FIG. 1 shows a schematic illustration of a thick matter conveying system in a partially cut perspective view
- FIG. 2 shows a longitudinal section through the retaining element of the conveyor system according to FIG. 1; 3 shows a longitudinal section through a further retaining member
- the conveyor system shown in the drawing has a single-cylinder piston pump 14 and a delivery line 12 connected on the pressure side and containing a retaining element 10. It is primarily intended for the conveyance of thick matter and sludge.
- the single-cylinder piston pump 14 essentially consists of a filler shaft 16, a feed cylinder 20 projecting from the end of the filler shaft 16 and connected to it via an inlet opening 18, as well as a feed piston 24 which can be moved hydraulically between two end positions on a fixed piston rod 22 .
- the retaining member 10 has a support ring 28 inserted in the area of a pipe coupling 26 in the delivery line 12 and a plurality of resilient finger slats 30 arranged at an angular distance from one another, which engage in the interior of the delivery line 12 designed as a cylinder tube and limit the passage opening 32.
- the finger lamellae 30 each consist of an essentially wedge-shaped curved spring steel sheet which, at its broader end facing the single-piston pump 14, bears against the inner circumferential surface 34 of the support ring 28 with holding means. screws 36 is screwed to this.
- the passage opening 32 is formed by a central opening 38 surrounded by the free ends of the finger slats 30 and by star-shaped slot openings 40, each of which remains free between the mutually facing lateral boundary surfaces of two adjacent finger slats 30 (FIGS. 1 and 2).
- the cross section of the central opening 38 and the width of the slot openings 40 are selected such that, on the one hand, jamming of the finger lamellae is prevented, and, on the other hand, coarse material is retained during the suction stroke of the piston pump, with the passage opening 32 being clogged.
- the delivery line 12 has in the area of the retaining member 10 a short pipe section 44 provided with an end recess 42, which can be coupled to a connecting flange 48 fastened by tie rods 46 in the area of the outlet opening of the delivery cylinder 20.
- the support ring 28 of the retaining member 10 inserted into the recess 42 is clamped between the mutually opposite end faces of the pipe section 44 and the connecting flange 48 when these are pressed against one another in the axial direction by the half-shells 50 of the coupling 26 during coupling.
- the pipe coupling 26 is sealed by a sealing ring 54, which lies against the circumference of the support ring 28 and is arranged in an annular gap 52 between the end faces of the pipe section 44 and the connecting flange 48.
- the connecting flange 48 points between the outlet opening of the conveying cylinder 20 and its end face abutting the supporting ring have a conically tapering inner cross-section, so that the conveyed material pressed out of the conveying cylinder 20 cannot accumulate on the heads of the holding screws 36.
- the retaining member 10 shown in FIG. 3 has two rows of finger lamellae 30 and 30 ', which are distributed over the circumference of the support ring 28.
- the finger lamella 30 'lying against the finger lamella 30 from the inside of the passage opening 32 closes the slot openings 40 formed between the finger lamella 30 in a predominant area, so that even fluid material to be conveyed is retained.
- the material to be conveyed is pressed out of the filling shaft 16 into the delivery cylinder 20 and from there into the delivery line 12.
- the free ends of the finger lamella 30 are bent apart by the material to be moved in the conveying direction with an elastic widening of the passage opening 32, so that they bear against the inner surface of the pipe section 44 under prestress.
- the delivery plunger 24 After reaching its front dead center, the delivery plunger 24 is pulled back in the suction stroke up to the front side of the feed chute 16 opposite the inlet opening 18, with material to be conveyed out of the feed chute 16 into the front of the front face of the delivery plunger 24. expiring space or flows.
- the finger lamellae 30 of the restraining member 10 bend due to their pretension and supported by the underpressure which arises in the delivery cylinder 20 during the withdrawal of the delivery piston 24 and / or by the hydrostatic pressure in the delivery line 12 into it 1 and 2 and thereby prevent material to be conveyed from the conveying line 12 back into the conveying cylinder 20.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Air Transport Of Granular Materials (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4022357 | 1990-07-13 | ||
DE4022357 | 1990-07-13 | ||
PCT/EP1991/000304 WO1992001158A1 (de) | 1990-07-13 | 1991-02-16 | Vorrichtung zur förderung von dickstoffen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0539373A1 true EP0539373A1 (de) | 1993-05-05 |
EP0539373B1 EP0539373B1 (de) | 1994-11-30 |
Family
ID=6410235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91903812A Expired - Lifetime EP0539373B1 (de) | 1990-07-13 | 1991-02-16 | Vorrichtung zur förderung von dickstoffen |
Country Status (5)
Country | Link |
---|---|
US (1) | US5340291A (de) |
EP (1) | EP0539373B1 (de) |
JP (1) | JP3140771B2 (de) |
DE (2) | DE4104693A1 (de) |
WO (1) | WO1992001158A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4228806B4 (de) * | 1992-08-29 | 2004-03-04 | Putzmeister Ag | Vorrichtung zur Förderung von Dickstoffen |
US6050786A (en) * | 1998-08-19 | 2000-04-18 | Delta Electronics, Inc. | Heat dissipation structure of a fan unit |
US6918526B1 (en) * | 2004-05-27 | 2005-07-19 | Wen-Sheng Huang | Muffler for staple guns |
DE102007058886A1 (de) | 2007-12-05 | 2009-06-10 | Putzmeister Concrete Pumps Gmbh | Vorrichtung zum Fördern von Feststoffen |
US8191571B2 (en) * | 2008-07-30 | 2012-06-05 | Hamilton Sundstrand Corporation | Fluid circuit breaker quick disconnect coupling |
KR101150658B1 (ko) * | 2008-08-29 | 2012-05-29 | 이근상 | 조리개식 가변밸브 |
US10125879B2 (en) * | 2011-08-03 | 2018-11-13 | Eco-Blu Pool Components Llc | Pool filter systems including pool fittings |
US9046394B2 (en) | 2013-01-07 | 2015-06-02 | Sensus Spectrum Llc | Water meter including variable orifice device |
US11326490B2 (en) * | 2018-05-02 | 2022-05-10 | Faurecia Emissions Control Technologies, Usa, Llc | Variable restriction valve for vehicle exhaust system |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7210028U (de) * | 1973-07-19 | Deutsche Gold Und Silber Scheideanstalt | Pumpe zum Fordern feinteiliger pulver formiger Stoffe | |
DE571874C (de) * | 1933-03-06 | Carlshuette Akt Ges Fuer Eisen | Gummilippenventil | |
FR489760A (fr) * | 1918-04-15 | 1919-03-11 | Gabriel Marie Dupuis | Dispositif de pompe d'épuisement |
DE510960C (de) * | 1928-09-26 | 1930-10-24 | Willy Brandegger Dipl Ing | Einrichtung zur Durchflussregelung in Rohrleitungen |
DE818605C (de) * | 1949-04-17 | 1951-10-25 | Kalin Feinbau G M B H | Selbstansaugende Kolben- oder Membranpumpe fuer unreine Fluessigkeiten |
US2897835A (en) * | 1956-02-29 | 1959-08-04 | Imp Brass Mfg Co | Vacuum breaker |
US3058430A (en) * | 1959-08-13 | 1962-10-16 | Handl Egon | Pump for concrete and mortar mixtures and the like |
FR1301646A (fr) * | 1961-09-23 | 1962-08-17 | Rheinisches Metallwerk Gmbh | Organe antireflux pouvant être monté dans des conduites de liquide, notamment dans le boisseau de dispositifs d'arrêt |
US3174434A (en) * | 1963-06-24 | 1965-03-23 | Tait Mfg Co The | Sump pump |
US3199457A (en) * | 1963-09-26 | 1965-08-10 | Ustick Repair & Custom Mfg | Reciprocating pump |
DE1816790A1 (de) * | 1968-12-21 | 1970-07-02 | Duerr Dental Ohg | Verschluss fuer Druck- und vor allem Saugleitungen |
US3749521A (en) * | 1970-10-01 | 1973-07-31 | M Coone | Method and apparatus for an aggregate pump |
US3895646A (en) * | 1973-11-30 | 1975-07-22 | Manuel G Howat | Self-regulating vane type valve for controlling fluid flow |
US4067540A (en) * | 1976-04-07 | 1978-01-10 | Slade Edward C | Segmented plug valve |
SU693045A1 (ru) * | 1978-05-29 | 1979-10-25 | Всесоюзный Строительный Трест По Механизации Работ "Энергомеханизация" | Бетононасос |
US4465102A (en) * | 1982-05-17 | 1984-08-14 | The Warren Rupp Company | Check valve |
-
1991
- 1991-02-15 DE DE4104693A patent/DE4104693A1/de not_active Withdrawn
- 1991-02-16 EP EP91903812A patent/EP0539373B1/de not_active Expired - Lifetime
- 1991-02-16 DE DE59103717T patent/DE59103717D1/de not_active Expired - Fee Related
- 1991-02-16 US US07/961,918 patent/US5340291A/en not_active Expired - Lifetime
- 1991-02-16 JP JP03503977A patent/JP3140771B2/ja not_active Expired - Fee Related
- 1991-02-16 WO PCT/EP1991/000304 patent/WO1992001158A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9201158A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH05507985A (ja) | 1993-11-11 |
DE59103717D1 (de) | 1995-01-12 |
US5340291A (en) | 1994-08-23 |
EP0539373B1 (de) | 1994-11-30 |
JP3140771B2 (ja) | 2001-03-05 |
WO1992001158A1 (de) | 1992-01-23 |
DE4104693A1 (de) | 1992-01-16 |
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