EP0016410A1 - Pompe pour matières visqueuses, notamment pompe à béton - Google Patents

Pompe pour matières visqueuses, notamment pompe à béton Download PDF

Info

Publication number: EP0016410A1
Authority: EP; European Patent Office
Prior art keywords: delivery; cylinder; swivel; pump; delivery line
Prior art date: 1979-03-14
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

Application number

EP80101272A

Other languages

German (de)

English (en)

Other versions

EP0016410B1 (fr

Inventor

Friedrich Dipl.-Ing. Schwing

Gerhard Dipl.-Kaufm. Schwing

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.)

Friedrich Wilhelm Schwing GmbH

Original Assignee

Friedrich Wilhelm Schwing 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.)

1979-03-14

Filing date

1980-03-12

Publication date

1980-10-01

1980-03-12 Application filed by Friedrich Wilhelm Schwing GmbH filed Critical Friedrich Wilhelm Schwing GmbH

1980-03-12 Priority to AT80101272T priority Critical patent/ATE1513T1/de

1980-10-01 Publication of EP0016410A1 publication Critical patent/EP0016410A1/fr

1982-09-01 Application granted granted Critical

1982-09-01 Publication of EP0016410B1 publication Critical patent/EP0016410B1/fr

Status Expired legal-status Critical Current

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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
- F04B7/0019—Piston machines or pumps characterised by having positively-driven valving a common distribution member forming a single discharge distributor for a plurality of pumping chambers
- F04B7/0034—Piston machines or pumps characterised by having positively-driven valving a common distribution member forming a single discharge distributor for a plurality of pumping chambers and having an orbital movement, e.g. elbow-pipe type members

Definitions

the invention relates to a thick matter pump, in particular a concrete pump, with a plurality of alternately operating delivery cylinders, each of which is assigned a three-way valve for flow control between the filling tank, delivery cylinder and delivery line, and with a connection circuit connecting the drives of the delivery cylinders and the three-way valves, which drive each Delivery cylinder switches between its intake and delivery stroke on a compression stroke, in which the drain in the delivery line is closed.
Such pumps are not only used to convey concrete through horizontal to vertical pipes, which are also used on placing booms can be attached, but can also be used to promote muddy to mushy masses. They are preferably suitable for a conveyed good that contains air or other gases.
the compression stroke of the pump compresses the material and thus the entrained gases before the material is pressed into the delivery line. This leads to an improvement in the volumetric efficiency of the pump and to an equalization of the delivery flow.
the closure of the delivery line during the switching process of the three-way valve and during the compression stroke ensures that not already compressed material can flow back from the delivery line into the prefilling container during the switching of the three-way valves and thereby further improves the volumetric efficiency of the pump.
a thick matter pump according to the preamble of claim is known (DE-AS 20 10 112), in which a further three-way valve is provided in a connecting line between the suction paths of the delivery cylinders and the delivery line as a closure of the delivery line.
This three-way valve must therefore have its own drive for its valve body.
the pump control which in itself must be relatively complicated due to the compression strokes switched on in the movement of the delivery pistons, is thereby further complicated. Since in the thick matter pump the three-way valve provided for controlling the delivery line during the compression stroke is designed as a flap valve and is arranged in a branch of a downpipe that connects the delivery line to the delivery cylinders, this flap valve must inevitably displace conveyed goods, in particular compressed conveyed goods, when switching over.
the invention seeks to remedy this.
the invention as characterized in the claims, solves the problem of avoiding a third three-way valve with an additional drive, which on the one hand prevents the medium from flowing back during the switching process and on the other hand closes the delivery line during the respective compression stroke.
Swivel tube valves are already known (DE-PS 12 85 319), which are used in two-cylinder piston pumps as four-way valves for flow control between the priming container, one of the delivery cylinders and the delivery line.
the swivel tube valves have the common disadvantage that they briefly cause a short circuit between the prefill container and the delivery line when the cylinder openings are traversed, which must lead to a pressure drop in the delivery line, especially if there is already compressed material in it, as in the pump according to the invention is provided.
the advantages achieved by the invention consist in a substantial simplification of the thick matter pump, because a total of only two multi-way valves are required for the flow control between the prefilling container, delivery cylinder and delivery line on the one hand and for the compression stroke on the other hand. It is therefore possible to control the compression strokes precisely and to eliminate the short circuit of the swivel tubes, thus fulfilling the essential requirements for pulsation-free delivery.
the arrangement can be made such that in the suction position of each multi-way slide the slide plate between the delivery cylinder opening and the inlet opening of the swivel tube.
the slide plate has a double function, because it prevents backflow of the conveyed medium during the switching process and acts as a closing element of the conveying cylinder during the compression stroke.
the arrangement is preferably such that the swivel tubes seal with their respective inlet openings in the suction position between the feed cylinders and the slide plates are attached to the sides of the swivel tubes which face away from one another.
the slide plates can be kidney-shaped.
An essentially rectangular valve housing 1 is located beneath a prefill container, preferably in the form of a funnel and optionally equipped with an agitator. In one of its longer walls 2 there are openings 3 and 4, behind which feed cylinders 5 and 6 are flanged. A piston 7 or 8 runs on a piston rod 9 or 10 in each delivery cylinder.
a three-way valve is used to control the flow between the above-mentioned pre-filling container and one of each of the delivery cylinders 5 and 6, as well as a delivery line 11, the three-way valves generally also 12 and 13 are designated. These two three-way valves have a common housing, which is identical to the housing 1.
Each of the three-way valves 12 and 13 has a valve body which consists of a swivel tube 14 and 15, respectively.
the ends 16 and 17 are mounted in joints, which in turn are fastened to the housing wall 19, which runs in a plane parallel to the wall.
slide plates 29 and 30 are fastened according to FIG.
the slide plates have a kidney-shaped outline, the longer curvatures 31 and 32 follow from the swivel radius, while the shorter curvature quantities 33 and 34 correspond to the curvature of the openings 22 and 23, respectively. This allows the slide plates 29, 30 to seal on the openings 22, 23.
the three-way valve 12 has released the flow from the prefilling container into the cylinder 5, but the opening 14a of the swivel tube 14 on the delivery cylinder side seals on the valve housing wall 3. This ver prevents compressed material from the delivery line 11 from flowing back into the valve housing 1 or into the prefilling container.
the three-way valve 13 connects the delivery cylinder 6 via the H osenrohr to press 19 with the counselleitunq 11, and the piston 8 runs in the conveying direction to pre-compressed material to be conveyed into the conduit 11.
the delivery stroke of the piston 8 has not yet ended, but the logic circuit has already ensured that the pivot tube 14 of the three-way valve 12 has brought the slide plate 29 onto its seat before the opening of the delivery cylinder 5, so that this opening is sealed.
the piston 7 runs according to the arrow in the conveying direction and carries out a compression stroke.
the delivery piston 7 has reached the end position of the compression stroke in the cylinder 5.
the position of the swivel tube 14 has remained unchanged and the piston 7 continues to deliver the cylinder 5 precompressed material to be conveyed into the line 11.
the swivel tube 15 of the three-way valve 13 has overflowed the position in which the slide plate 30 connected to it seals on the opening of the conveying cylinder 6, and is now in the position, in which its opening 15a seals on the valve housing wall 3, so that the backflow from the delivery line 11 is prevented. Even during this switching process, the medium could not flow back.
the opening of the cylinder 6 released in this position enables the connection to the prefilling container and thus the transition to the intake stroke of the piston 8 in the cylinder 6.
FIG. 6 g This phase is shown in FIG. 6 g , as the arrow in cylinder 6 shows.
the position of the various directional control valves is the same as in FIG. 5 and the piston 7 of the cylinder 5 continues its delivery path in accordance with the direction of the arrow.
the further processes then proceed analogously to those described, so that each cylinder first carries out a compression stroke and then carries out its delivery stroke.
S-shaped swivel tubes used according to the illustrated embodiment are not a prerequisite for realizing the invention. They can also be replaced by swivel tubes which are shaped differently and are known in particular. For this purpose, C-shaped, but also swivel pipes come into consideration, which have a vertical axis and in which pipe bends are installed between the cylinder end and the inlet opening in the prefilling container.
All or part of the swivel tubes can be immersed in the medium. It is sufficient to cover the outlet opening approximately up to the horizontal line shown in FIG. 7 with the pumped medium.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Reciprocating Pumps (AREA)

EP80101272A 1979-03-14 1980-03-12 Pompe pour matières visqueuses, notamment pompe à béton Expired EP0016410B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT80101272T ATE1513T1 (de)	1979-03-14	1980-03-12	Dickstoffpumpe, insbesondere betonpumpe.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE2909964		1979-03-14
DE19792909964 DE2909964A1 (de)	1979-03-14	1979-03-14	Dickstoffpumpe, insbesondere fuer beton

Publications (2)

Publication Number	Publication Date
EP0016410A1 true EP0016410A1 (fr)	1980-10-01
EP0016410B1 EP0016410B1 (fr)	1982-09-01

Family

ID=6065338

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP80101272A Expired EP0016410B1 (fr)	1979-03-14	1980-03-12	Pompe pour matières visqueuses, notamment pompe à béton

Country Status (4)

Country	Link
EP (1)	EP0016410B1 (fr)
JP (1)	JPS55160183A (fr)
AT (1)	ATE1513T1 (fr)
DE (1)	DE2909964A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0315750A1 (fr) *	1987-11-12	1989-05-17	Putzmeister-Werk Maschinenfabrik Gmbh	Pompe pour matière épaisse
EP0561262A1 (fr) *	1992-03-19	1993-09-22	Schwing GmbH	Pompe pour matière épaisse ayant des cylindres, en particulier pompe à béton à deux cylindres
EP0562498A1 (fr) *	1992-03-24	1993-09-29	Schwing GmbH	Pompe pour matières épaisses munie de cylindres refoulants, en particulier pompe à béton bi-cylindre
CN103216409A (zh) *	2013-03-25	2013-07-24	冀中能源峰峰集团有限公司	一种活塞式工业泵并联使用系统及方法
CN103625928A (zh) *	2013-10-31	2014-03-12	冀中能源峰峰集团有限公司	一种膏体输送合流系统及其合流方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS60175780A (ja) *	1984-02-23	1985-09-09	Kyokuto Kaihatsu Kogyo Co Ltd	コンクリ−トポンプにおける吸送部の切換装置
DE3512946A1 (de) *	1985-04-11	1986-10-16	Preussag Ag Metall, 3380 Goslar	Vorrichtung zur foerderung von dickstoffsuspensionen und verfahren zu ihrem betrieb
DE19735091B4 (de)	1997-08-13	2006-03-02	Schwing Gmbh	Zweizylinder-Dickstoffpumpe
DE102006028329A1 (de) *	2006-06-20	2007-12-27	Schwing Gmbh	Zweizylinder-Dickstoffpumpe mit zwei Rohrweichen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1266130B (de) *	1963-11-08	1968-04-11	Eugene Lee Sherrod	Mehrzylinderkolbenpumpe zum Foerdern von Beton od. dgl.
DE1453705A1 (de) *	1963-12-19	1969-09-18	Wennberg Olav Carl Gustav	Kolbenpumpe fuer Beton oder andere Massen aehnlicher Konsistenz
GB1214842A (en) *	1967-10-11	1970-12-02	Winget Ltd	Reciprocating concrete pump
US3682575A (en) *	1970-12-10	1972-08-08	Karl Guddal	Concrete pump
US3963385A (en) *	1975-05-05	1976-06-15	Caban Angel M	Valve assembly for concrete pumps

1979
- 1979-03-14 DE DE19792909964 patent/DE2909964A1/de active Granted
1980
- 1980-03-12 EP EP80101272A patent/EP0016410B1/fr not_active Expired
- 1980-03-12 AT AT80101272T patent/ATE1513T1/de not_active IP Right Cessation
- 1980-03-14 JP JP3173580A patent/JPS55160183A/ja active Granted

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1266130B (de) *	1963-11-08	1968-04-11	Eugene Lee Sherrod	Mehrzylinderkolbenpumpe zum Foerdern von Beton od. dgl.
DE1453705A1 (de) *	1963-12-19	1969-09-18	Wennberg Olav Carl Gustav	Kolbenpumpe fuer Beton oder andere Massen aehnlicher Konsistenz
GB1214842A (en) *	1967-10-11	1970-12-02	Winget Ltd	Reciprocating concrete pump
US3682575A (en) *	1970-12-10	1972-08-08	Karl Guddal	Concrete pump
US3963385A (en) *	1975-05-05	1976-06-15	Caban Angel M	Valve assembly for concrete pumps

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0315750A1 (fr) *	1987-11-12	1989-05-17	Putzmeister-Werk Maschinenfabrik Gmbh	Pompe pour matière épaisse
EP0561262A1 (fr) *	1992-03-19	1993-09-22	Schwing GmbH	Pompe pour matière épaisse ayant des cylindres, en particulier pompe à béton à deux cylindres
US5316453A (en) *	1992-03-19	1994-05-31	Friedrich Wilh. Schwing Gmbh	Slurry pump with discharge cylinders, especially two-cylinder concrete pump
EP0562498A1 (fr) *	1992-03-24	1993-09-29	Schwing GmbH	Pompe pour matières épaisses munie de cylindres refoulants, en particulier pompe à béton bi-cylindre
US5380174A (en) *	1992-03-24	1995-01-10	Friedrich Wilh. Schwing Gmbh	Pump for thick matter having delivery cylinders, in particular a two-cylinder concrete pump
CN103216409A (zh) *	2013-03-25	2013-07-24	冀中能源峰峰集团有限公司	一种活塞式工业泵并联使用系统及方法
CN103625928A (zh) *	2013-10-31	2014-03-12	冀中能源峰峰集团有限公司	一种膏体输送合流系统及其合流方法

Also Published As

Publication number	Publication date
DE2909964C2 (fr)	1988-05-19
JPS55160183A (en)	1980-12-12
DE2909964A1 (de)	1980-09-25
JPS6329113B2 (fr)	1988-06-10
ATE1513T1 (de)	1982-09-15
EP0016410B1 (fr)	1982-09-01

Legal Events

Date	Code	Title	Description
1980-08-05	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
1980-10-01	AK	Designated contracting states	Designated state(s): AT BE FR GB IT
1980-11-12	17P	Request for examination filed
1982-05-11	ITF	It: translation for a ep patent filed
1982-07-02	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1982-09-01	AK	Designated contracting states	Designated state(s): AT BE FR GB IT
1982-09-01	REF	Corresponds to:	Ref document number: 1513 Country of ref document: AT Date of ref document: 19820915 Kind code of ref document: T
1984-03-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: BE Payment date: 19840331 Year of fee payment: 5
1987-03-24	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: AT Payment date: 19870324 Year of fee payment: 8
1989-03-12	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: AT Effective date: 19890312
1989-03-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: BE Effective date: 19890331
1989-09-30	BERE	Be: lapsed	Owner name: FRIEDRICH WILH. SCHWING G.M.B.H. Effective date: 19890331
1996-02-26	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19960226 Year of fee payment: 17
1996-03-18	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19960318 Year of fee payment: 17
1997-03-12	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19970312
1997-11-05	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19970312
1997-11-28	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: 19971128
1998-01-30	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
2016-09-14	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
2016-09-14	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

Publication	Publication Date	Title
CH634129A5 (de)	1983-01-14	Membranpumpe.
DE2454290A1 (de)	1975-05-22	Betonpumpe
DE2447054C3 (de)	1981-09-17	Zuteilvorrichtung für eine Betonpumpe
EP0016410B1 (fr)	1982-09-01	Pompe pour matières visqueuses, notamment pompe à béton
EP0402390A1 (fr)	1990-12-19	Agencement de commande de pompes a double cylindre pour liquides epais.
EP0315750B1 (fr)	1991-07-10	Pompe pour matière épaisse
DE4209471A1 (de)	1993-09-30	Dickstoffpumpe für Förderzylindern, insbesondere Zweizylinderbetonpumpe
DE3248228A1 (de)	1984-06-28	Absperrvorrichtung fuer pneumatische foerdersysteme zum transport rieselfaehiger schuettgueter
DE3428629C2 (fr)	1987-09-10
EP0437440A1 (fr)	1991-07-24	Pompe a liquides epais avec organe d'arret en aval.
EP3033523B1 (fr)	2017-08-23	Pompe à matière épaisse à deux cylindres comportant une vanne d'aiguillage
EP0988450B1 (fr)	2002-09-11	Pompe a liquides epais comportant deux cylindres
DE2943967C2 (fr)	1989-03-16
DE3504107C2 (fr)	1987-08-13
DE2700800C3 (de)	1980-10-16	Steuerschieber für Betonpumpen
EP0564807A1 (fr)	1993-10-13	Dispositif de transport et de dosage pour produits visqueux
DE4436247A1 (de)	1996-04-18	Anordnung zum Reinigen von Dickstoff-Förderrohren
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WO2006089772A1 (fr)	2006-08-31	Dispositif de pompe et procede pour refouler une masse pateuse en continu
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EP0485862B1 (fr)	1993-08-04	Pompe pour matière épaisse ayant un couple de cylindres aspirant et refoulant alternativement