EP1419316A1 - Verfahren zur ansteuerung einer dickstoffpumpe - Google Patents
Verfahren zur ansteuerung einer dickstoffpumpeInfo
- Publication number
- EP1419316A1 EP1419316A1 EP02754826A EP02754826A EP1419316A1 EP 1419316 A1 EP1419316 A1 EP 1419316A1 EP 02754826 A EP02754826 A EP 02754826A EP 02754826 A EP02754826 A EP 02754826A EP 1419316 A1 EP1419316 A1 EP 1419316A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- delivery
- delivery line
- thick
- pipe switch
- pumping
- 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
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
- 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
- F04B15/023—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 supply of fluid to the pump by gravity through a hopper, e.g. without intake valve
-
- 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
Definitions
- the invention relates to a method for controlling a thick matter pump, which has two delivery cylinders opening via openings in a material feed container with push pistons which can be actuated in push-pull manner, and a discharge side arranged inside the material feed container and alternately connectable on the inlet side to the openings of the feed cylinder and releasing the other opening a delivery line connected pipe switch, in which thick material is sucked during pumping via the delivery cylinder currently open towards the material feed container and is conveyed through the delivery line to the outlet via the other delivery cylinder currently connected to the pipe switch while building up a thick matter column.
- thick matter pumps of this type are suitable for conveying any pumpable thick matter, they are of particular technical and economic importance in the conveyance of liquid concrete.
- the following explanations therefore refer, for example, to the conveyance of liquid concrete, without there being any restriction.
- Thick matter pumps can be arranged on stationary or mobile frames.
- the delivery line is usually guided over a distribution boom designed as an articulated mast and has an end hose in the area of its outlet.
- the material feed container of the concrete pump is usually loaded with liquid concrete via truck mixers. While waiting for the next truck mixer or when aligning the placing boom to another spreading location, there are always pump breaks in which the concrete pump is at a standstill. It must be taken into account that dormant liquid concrete for Settling and tending to solidify. This applies in particular to self-compacting concretes in which self-compaction builds up from below due to the outgassing of air pores. During the pump breaks, there are therefore undesirable signs of hardening in the concrete, both in the pipe system and in the material feed container.
- the object of the invention is to develop a method for controlling a thick matter pump with which an undesired solidification of the thick matter material can be avoided during the pump breaks.
- the solution according to the invention is based on the idea that the solidification of preferably self-compacting thick materials, such as liquid concrete, can be avoided by keeping the thick material in motion even during the pump breaks. Accordingly, it is proposed according to the invention that the thick matter column in the delivery line and / or the pipe switch and / or the delivery cylinders is kept at least temporarily in motion during a pumping break without thick matter emerging from the delivery line on the outlet side.
- this is achieved in that the delivery pistons and / or the pipe switch are actuated during the pumping break to produce an alternating reciprocating thick material column. With this procedure, the bulk of the thick matter material can remain in the delivery line system until the next pump operating phase. Even with longer waiting times, no emptying of the delivery line is necessary. To ensure that the major part of the thick material remains in the delivery line system, it is proposed according to a preferred embodiment of the invention
- the pipe switch is switched to the other delivery cylinder and thick material is pressed in the forward stroke by its piston into the delivery line, without it exiting the delivery line on the outlet side,
- the forward and backward strokes carried out during the pumping break can extend over part or over the entire cylinder length. Basically, it is possible to carry out several backwards and forwards strokes in a row without switching the pipe switch.
- the outlet end of the delivery line should be at the beginning of a each pumping break are raised so far that no thick material can escape on the outlet side under the influence of gravity.
- the thick material in the material feed container is kept in motion by the tube switch switched back and forth and / or at least one agitator .
- the direction of rotation of the agitator located in the material feed container can be reversed periodically or stochastically, preferably depending on the piston strokes.
- additional agitators which engage in the material feed container can be switched on, preferably with a changing direction of rotation, during the pump break.
- a simplified mode of movement can be achieved by pivoting the pipe switch in the pumping break into a central position with partial overlap between the two cylinder openings, and that Pistons are preferably driven more slowly than in push-pull mode. This enables an effective circulation of the thick material in the material feed container and in the delivery cylinders without causing a flow in the placing boom.
- the single figure shows a two-cylinder concrete pump in a partially sectioned diagram.
- the concrete pump shown in the drawing essentially consists of two delivery cylinders 10, the front openings 12 of which open into a material feed container 14.
- a pipe diverter 18 engages in the material feed container 14, which can be connected alternately on the inlet side to the openings 12 of the delivery cylinders and is connected on the outlet side to a delivery line 20.
- the delivery pistons 26 arranged in the delivery cylinders 10 are driven in a push-pull manner via hydraulic drive cylinders 24 ', 24 ".
- the delivery pistons 26 are connected to the drive pistons 30 of the drive cylinders 24', 24" via a common piston rod 28.
- a water box 32 through which the piston rods 28 extend.
- liquid concrete is sucked in via the delivery cylinder 10, which is currently open to the material feed container 14 (arrow 22), and is conveyed through the delivery line 20 to the outlet of the delivery line 20 via the other delivery cylinder connected to the pipe switch 18 (arrows 16).
- the delivery pistons 26 and / or the diverter 18 are actuated during the pumping pauses to produce an alternating reciprocating concrete column.
- the liquid concrete can also be kept in motion in the material feed container 14 during the pumping pauses by the tube switch 18 and / or at least one agitator 34 which is switched back and forth.
- the movement mode according to exemplary embodiment 1 provides that at the beginning of a pump break from a current standstill position, concrete is first sucked out of the delivery line 20 in the backward stroke of the piston 26 of the delivery cylinder 10 currently connected to the diverter 18. Following this first reverse stroke, the pipe switch 18 is switched over to the other delivery cylinder 10 and concrete is also sucked out of the delivery line 20 by its piston 26 in the reverse stroke. Following the last reverse stroke, the diverter 18 can then be switched over to the other delivery cylinder 10 and concrete can be pressed in the forward stroke by its piston into the delivery line 20. After the first forward stroke, the pipe switch can be switched to the other delivery cylinder and the concrete in turn are pressed in the forward stroke by its piston into the delivery line.
- the two initial reverse strokes ensure that no concrete emerges from the delivery line on the outlet side during the subsequent forward strokes.
- 18 concrete is sucked in from the delivery line in the reverse stroke after the last forward stroke without switching the pipe switch.
- the backward and forward stroke can temporarily be repeated several times without switching the diverter 18.
- the material entering and exiting the respective open delivery cylinder leads to a desired flow movement in the material feed container 14.
- the above movement sequences can be repeated during the entire pumping break in the manner of a cyclical sequence control, without causing concrete to exit on the outlet side and excessive filling of the material feed container comes.
- the constant movement of the concrete volume ensures that the concrete cannot solidify or compact during the pump breaks.
- the pipe switch is pivoted into a middle position with partial overlap between the two cylinder openings during the pumping break and that the pistons are preferably driven more slowly than in counter-clockwise motion while maintaining the movement in the concrete who- the.
- the concrete is rolled back and forth over the feed cylinders in the hopper without causing an undesired flow of concrete in the feed line.
- a mechanical stirring element into the delivery line.
- a suitable opening must be provided on the delivery line, through which the stirring element can be inserted, for example, via a cardan shaft or a spring-elastic shaft.
- An external drive then ensures that the stirring element is either rotated or axially oscillating, so that a movement is introduced into the stationary concrete column.
- the stirrer is then pulled out of the line again.
- the invention relates to a method for controlling a thick matter pump.
- the thick matter pump has two delivery cylinders 10 opening into openings 12 into a material feed container 14 with feed pistons 26 which can be actuated in push-pull mode, and a pipe switch arranged inside the material feed container 14, which can be connected on the inlet side alternately to the openings of the feed cylinder and opens the other opening and connects to a delivery line 20 on the outlet side 18 on.
- a pipe switch arranged inside the material feed container 14 which can be connected on the inlet side alternately to the openings of the feed cylinder and opens the other opening and connects to a delivery line 20 on the outlet side 18 on.
- the thick material column during a pump pause in the delivery line 20 and / or the pipe switch 18 and / or the delivery cylinders 10 is at least temporarily kept in motion without thick material exiting the delivery line 20 on the outlet side.
- the invention further provides that the thick material in the material feed container is also kept in motion by the back-and-forth pipe switch 18 and / or at least one agitator 34 during the pump break.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Separation By Low-Temperature Treatments (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10140193A DE10140193A1 (de) | 2001-08-22 | 2001-08-22 | Verfahren zur Ansteuerung einer Dickstoffpumpe |
DE10140193 | 2001-08-22 | ||
PCT/EP2002/007397 WO2003019007A1 (de) | 2001-08-22 | 2002-07-04 | Verfahren zur ansteuerung einer dickstoffpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1419316A1 true EP1419316A1 (de) | 2004-05-19 |
EP1419316B1 EP1419316B1 (de) | 2006-09-13 |
Family
ID=7695623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02754826A Expired - Lifetime EP1419316B1 (de) | 2001-08-22 | 2002-07-04 | Verfahren zur ansteuerung einer dickstoffpumpe |
Country Status (9)
Country | Link |
---|---|
US (1) | US7131820B2 (de) |
EP (1) | EP1419316B1 (de) |
JP (1) | JP4221293B2 (de) |
KR (1) | KR100819990B1 (de) |
CN (1) | CN1492968A (de) |
AT (1) | ATE339613T1 (de) |
DE (2) | DE10140193A1 (de) |
ES (1) | ES2271309T3 (de) |
WO (1) | WO2003019007A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004015181A1 (de) | 2004-03-25 | 2005-10-13 | Putzmeister Ag | Materialaufgabebehälter für eine Dickstoffpumpe |
JP4168198B2 (ja) * | 2005-05-26 | 2008-10-22 | 兵神装備株式会社 | 容器内貯留液の汲み出し方法とその装置 |
KR101142196B1 (ko) * | 2009-10-27 | 2012-05-07 | 주식회사 에버다임 | 콘크리트 펌프트럭의 실링장치 |
CN102032135B (zh) * | 2010-11-11 | 2013-09-25 | 三一汽车制造有限公司 | 一种混凝土泵 |
CN102434421B (zh) * | 2011-12-05 | 2014-02-26 | 三一重工股份有限公司 | 一种活塞式砂浆泵及其泵送系统 |
CN104454483B (zh) * | 2014-11-20 | 2016-04-20 | 徐州徐工施维英机械有限公司 | 负载粘稠度的控制方法和控制系统、以及泵送设备 |
US10543817B2 (en) | 2016-12-15 | 2020-01-28 | Schwing America, Inc. | Powered rear outrigger systems |
DE102019109083A1 (de) * | 2019-04-07 | 2020-10-08 | Putzmeister Engineering Gmbh | Verfahren zur Steuerung einer Dickstoffpumpe und Dickstoffpumpe |
CN109937892A (zh) * | 2019-04-19 | 2019-06-28 | 浙江明佳环保科技有限公司 | 一种养殖场粪便输送设备 |
CN110539400B (zh) * | 2019-09-09 | 2021-02-09 | 威海永成工业设备有限公司 | 一种混凝土输送设备及其使用方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2039854A1 (de) | 1970-08-11 | 1972-02-17 | Englert Leo Willi | Betonpumpe |
DE2161025A1 (de) | 1971-12-09 | 1973-06-14 | Leo Willi Englert | Zweizylinder-betonpumpe mit druckwasserbetrieb |
US3963385A (en) * | 1975-05-05 | 1976-06-15 | Caban Angel M | Valve assembly for concrete pumps |
DE3813758A1 (de) | 1988-04-23 | 1989-11-02 | Putzmeister Maschf | Materialaufgabebehaelter fuer dickstoffpumpen |
US5180294A (en) * | 1992-03-04 | 1993-01-19 | Confloat Consulting Ltd. | Concrete pump having pressurized seal for swing tube |
DE19643038B4 (de) * | 1996-10-18 | 2007-09-13 | Putzmeister Ag | Vorrichtung und Verfahren zum Pumpen von Dickstoffgemischen |
DE19653636C2 (de) * | 1996-12-20 | 2003-08-21 | Joachim Friedrich Knauer | Pumpenanordnung mit steuerbarer Betriebsweise |
GB2325026B (en) * | 1997-05-07 | 1999-03-10 | Yu Lin Huang | A slurry supplying mechanism |
DE29904624U1 (de) * | 1999-03-12 | 1999-06-02 | Kao Chin Yen | Verzögerungsvorrichtung für das Zurückpumpen von Beton |
-
2001
- 2001-08-22 DE DE10140193A patent/DE10140193A1/de not_active Withdrawn
-
2002
- 2002-07-04 WO PCT/EP2002/007397 patent/WO2003019007A1/de active IP Right Grant
- 2002-07-04 KR KR1020047002591A patent/KR100819990B1/ko not_active IP Right Cessation
- 2002-07-04 DE DE50208162T patent/DE50208162D1/de not_active Expired - Fee Related
- 2002-07-04 US US10/476,106 patent/US7131820B2/en not_active Expired - Fee Related
- 2002-07-04 EP EP02754826A patent/EP1419316B1/de not_active Expired - Lifetime
- 2002-07-04 CN CNA028052943A patent/CN1492968A/zh active Pending
- 2002-07-04 JP JP2003523833A patent/JP4221293B2/ja not_active Expired - Fee Related
- 2002-07-04 AT AT02754826T patent/ATE339613T1/de not_active IP Right Cessation
- 2002-07-04 ES ES02754826T patent/ES2271309T3/es not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO03019007A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10140193A1 (de) | 2003-03-13 |
WO2003019007A1 (de) | 2003-03-06 |
ATE339613T1 (de) | 2006-10-15 |
EP1419316B1 (de) | 2006-09-13 |
KR100819990B1 (ko) | 2008-04-07 |
CN1492968A (zh) | 2004-04-28 |
US7131820B2 (en) | 2006-11-07 |
US20040146412A1 (en) | 2004-07-29 |
JP4221293B2 (ja) | 2009-02-12 |
DE50208162D1 (de) | 2006-10-26 |
KR20040027978A (ko) | 2004-04-01 |
ES2271309T3 (es) | 2007-04-16 |
JP2005501196A (ja) | 2005-01-13 |
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