EP3033523A1 - Zweizylinder-dickstoffpumpe mit rohrweiche - Google Patents
Zweizylinder-dickstoffpumpe mit rohrweicheInfo
- Publication number
- EP3033523A1 EP3033523A1 EP14719011.0A EP14719011A EP3033523A1 EP 3033523 A1 EP3033523 A1 EP 3033523A1 EP 14719011 A EP14719011 A EP 14719011A EP 3033523 A1 EP3033523 A1 EP 3033523A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- delivery
- container
- slot
- transfer tube
- 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
-
- 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
-
- 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
-
- 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
- F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
- F04B19/20—Other positive-displacement pumps
- F04B19/22—Other positive-displacement pumps of reciprocating-piston type
-
- 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
- F04B7/0023—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 a rotating movement
-
- 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
- F04B7/0026—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 oscillating movement
Definitions
- the invention relates to a sludge pump with a material feed container and two discharge ports connected to the front side of each delivery opening in the container wall, which are connected by a arranged in the interior of the material feed hopper alternately with the container interior and a delivery line and the delivery piston alternately a Carry out filling stroke and a delivery stroke.
- the pipe switch has an inlet opening pointing in the direction of the outlet openings and designed as a circular arc-shaped elongated hole, the width of which corresponds to the diameter and its length to the outer spacing of the mouth openings and which each has a closure projection protruding beyond the outer edge of the inlet opening in the pivoting direction Longitudinal extent corresponds to the distance between the mouth openings (DE-195 03 986 A1).
- the well-known slurry pump is characterized in particular by the fact that formed as a curved slot inlet opening and the two closure approaches of the pipe switch ensure that during the Schwenkating. Switching the pipe switch at least temporarily a short circuit of the two delivery cylinder is made. With these measures it is achieved that during the switching operation of the pipe switch, the two delivery cylinders temporarily separated from the interior of the material feed container and can be shorted together under common connection with the delivery line, so that the one delivery piston still stop its delivery stroke and at the same time the other delivery piston with its delivery already can start. The delivery piston terminating the delivery stroke will only perform its subsequent filling stroke when the short circuit between the two outlet openings is canceled again and the associated delivery cylinder is connected to the container interior.
- the present invention seeks to improve the well-known slurry pump of the type specified in that both in the stationary and in the moving state of the transfer tube a sufficient seal in the area of the diverter tank wall partition parts is guaranteed.
- the solution according to the invention essentially consists in that the pipe switch has a metallic ring element having the arcuate slot and a cushion element arranged between the ring element and a pivot pipe connected on the output side to the conveyor line, the cushion having a perforation comprising the slot, the ring element being relative to the pivot pipe limited axially movable and can be pressed against the inner surface of the container wall via the cushion member under the action of the delivery pressure in the transfer tube.
- the cushioning element has a non-circular areal cross-sectional shape.
- the preferably rubber-elastic material behaves almost incompressible, much like a liquid that transfers the hydraulic pressure evenly in all directions. This means that the pressure of the conveyed material from the inside of the diverter valve ideally propagates uniformly over the upholstery element, namely into the closure extensions.
- the metallic ring member is pressed against the inner surface of the container wall, although only the inlet contour of the cushion member is in contact with the pressurized conveying medium.
- a further improvement in this regard can be achieved by providing within the cushioning element a kind of fluid or gel pocket over which the pressure can be transferred even better.
- the container wall carries on its inner surface facing the ring member a provided with the mouth openings replaceable wear plate. This can be relatively easily replaced in case of wear. In addition, this can be used against the material container wear-resistant and therefore more expensive material.
- a further advantageous embodiment of the invention provides that the ring element has a schwenkrohr facility arranged, adapted over its outer contour to the cushion element, step-shaped pocket for receiving the cushion element.
- a further improvement in this regard is achieved when the ring member is also limited to the slot through a stepped pocket wall whose height is smaller than the outer edge of the bag.
- a further improvement of the positioning of the ring element on the pivot tube is achieved in that at the cylinder-side end of the pivot tube an arcuately limited, penetrated by a pivot tube channel elevation is arranged, which has a corresponding outer contour of the pocket in the ring element.
- FIG. 1 is a perspective view of a two-cylinder Dickstoffpum- PE
- Fig. 2 is a schematic representation of the essential parts of the thick matter pump in a perspective exploded view
- Fig. 3a and b seen two perspective exploded views of the pipe switch with wear plate from different sides;
- Fig. 4b is a representation corresponding to Figure 4a with partially broken pipe switch.
- Fig. 5a to c an opposite embodiment of the ring member with
- the sludge pump shown in Fig. 1 has a material supply container 10 for receiving thick matter, such as liquid concrete.
- the liquid concrete is conveyed via a pipe bend 12 in an only indicated conveying line 14. This is done by means of two delivery cylinders 16, 17, which are connected to the front term mouth openings 18,19 are connected to a respective passage opening 18 ', 19' in the container wall 20 and the delivery piston 22,23 alternately perform a filling stroke and a delivery stroke.
- the diverter 24 is pivotable via a hydraulic drive mechanism in each case in its desired position with respect to the mouth openings 18,19.
- the delivery pistons 22, 23 are moved by means of hydraulic cylinder-piston units 26, 27, of which only the cylinders are schematically indicated in FIG. 1.
- the diverter 24 has an opening in the direction of the orifices 18,19, designed as arcuate curved slot 28 inlet opening whose width corresponds to the diameter and the length of the outer distance of the mouth openings 18,19 and each one in Pivoting direction over the outer edge of the inlet opening 28 protruding closure approach 30,31, the longitudinal extent corresponds to the distance between the mouth openings 18,19 approximately.
- a special feature of the invention is that the pipe switch has a bow-shaped elongated hole 28 exhibiting metallic ring member 32 and a between the ring member 32 and an output side connected to the feed line pivot pipe 34 arranged cushion member 36.
- the padding element 36 has a long hole 28 in the ring member 32 comprehensive slot-shaped opening 38.
- the ring member 32 is axially movable relative to the pivot tube 34 and is under the action of the delivery pressure generated in the delivery stroke in the transfer tube 34 via the ring member 32 against the inner surface of the container wall 20 pressed.
- the container wall 20 carries on its the inner surface facing the ring member 32 a with the passage openings 18 ', 19' and provided with a bearing bore 40 for the bearing pin 42 replaceable metallic wear plate 20 '.
- the ring element 32 has a step-shaped pocket 44, arranged on the pivoting tube side and adapted to the cushion element 36 via its outer contour, for receiving the cushioning element 36.
- the ring member 32 is also limited to the slot 28 through a stepped inner pocket wall 46 whose height is smaller than the outer pocket edge 48.
- At the cylinder-side end of the pivot tube 34 is an arcuately limited elevation 50 which is penetrated by the pivot tube channel 52 (FIG. 3 a) and which has one outer pocket corresponding to the pocket 44 in the ring element 32 (FIG. 3 b).
- the cushion element 36 consists of a resilient, elastic or rubber-elastic material. A further improvement in the contact pressure effect can be achieved in that the cushioning element 36 contains a filling designed as an incompressible liquid.
- the inlet opening of the pipe switch or of the ring element is designed with its curved slot shape so that the two delivery cylinders 16,17 are short-circuited via their orifices 18,19 within the slot 28. If, in this position, both delivery cylinders 16, 17 carry out a delivery stroke with their delivery pistons 22, 23, a smooth, bumpless switching process can be ensured. In preparation for the switching operation, a pre-pressure can already be built up in the previously filled delivery cylinder while the closure attachment 30, 31 is being moved past the diverter 24. This gives a further improvement in terms of the continuous flow through the delivery line during the switching process. On the other hand, this means that the piston speeds and thus also the stroke duration during the filling stroke and the delivery stroke are different, since due to the described functional Special features for the filling stroke less time available than for the delivery stroke.
- the invention relates to a slurry pump with a material feed container 10 and two frontal openings 18,19 to one through opening 18 ', 19' in the container wall 20 connected to the delivery cylinders 16,17.
- the delivery cylinders 16, 17 can be connected in alternation with the container interior 21 and a delivery line 14 by a pipe switch 24 arranged in the interior of the material delivery container 10, while their delivery pistons 22, 23 alternately perform a filling stroke and a delivery stroke.
- the diverter 24 has an opening in the direction of openings 18,19 facing, as a circular arc curved slot 28 formed inlet opening whose width corresponds to the diameter and its length to the outer distance of the mouth openings 18,19 and each one in the pivoting direction on the outer edge of the slot projecting closure approach 30,31, whose longitudinal extent corresponds to the distance between the mouth openings.
- the pipe switch 24 a the arcuate slot 28 exhibiting metallic ring member 32 and a connected between the ring member 32 and an output side to the feed line 14 Swivel tube 34 arranged, a the slot 28 comprehensive breakthrough 38 exhibiting cushion member 36, wherein the ring member 32 relative to the pivot tube 34 axially movable and under the action of the delivery pressure in the transfer tube 24 via the cushion member 36 against the inner surface of the container wall can be pressed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013215990.0A DE102013215990A1 (de) | 2013-08-13 | 2013-08-13 | Zweizylinder-Dickstoffpumpe mit Rohrweiche |
PCT/EP2014/058291 WO2015022088A1 (de) | 2013-08-13 | 2014-04-24 | Zweizylinder-dickstoffpumpe mit rohrweiche |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3033523A1 true EP3033523A1 (de) | 2016-06-22 |
EP3033523B1 EP3033523B1 (de) | 2017-08-23 |
Family
ID=50543602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14719011.0A Active EP3033523B1 (de) | 2013-08-13 | 2014-04-24 | Zweizylinder-dickstoffpumpe mit rohrweiche |
Country Status (7)
Country | Link |
---|---|
US (1) | US20160160851A1 (de) |
EP (1) | EP3033523B1 (de) |
JP (1) | JP2016528433A (de) |
KR (1) | KR20160041910A (de) |
CN (1) | CN105683569A (de) |
DE (1) | DE102013215990A1 (de) |
WO (1) | WO2015022088A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3282125A1 (de) * | 2016-08-11 | 2018-02-14 | Putzmeister Engineering GmbH | Dickstoffventil |
CN110195466B (zh) * | 2019-04-24 | 2021-07-13 | 湖南睿弓机械科技有限公司 | 清淤机械及其液压*** |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3663129A (en) * | 1970-09-18 | 1972-05-16 | Leon A Antosh | Concrete pump |
US3989420A (en) * | 1974-05-15 | 1976-11-02 | J. I. Case Company | Concrete pumping apparatus |
DE2415276C2 (de) * | 1974-03-29 | 1976-11-11 | Friedrich Schwing | Pumpe zum Fördern von Dickstoffen, insbesondere Beton |
US3963385A (en) * | 1975-05-05 | 1976-06-15 | Caban Angel M | Valve assembly for concrete pumps |
DE2829181A1 (de) * | 1978-07-03 | 1980-01-17 | Scheele Maschf W | Rohrweiche fuer eine betonpumpe |
DE3153268C2 (en) * | 1981-01-31 | 1988-01-28 | Friedrich Wilh. Schwing Gmbh, 4690 Herne, De | Two-cylinder viscous-material pump, preferably concrete pump |
JPS6063079U (ja) * | 1983-10-07 | 1985-05-02 | 合資会社 八代石油 | コンクリ−トポンプの吐出口と分配管の間隙をシ−ルするリング |
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 |
DE3419832A1 (de) * | 1984-05-26 | 1985-11-28 | Karl Dipl.-Ing. 7000 Stuttgart Schlecht | Rohrweiche einer dickstoff, insbesondere beton foerdernden doppelkolbenpumpe |
DE3430193A1 (de) * | 1984-08-16 | 1986-02-27 | Linnhoff & Thesenfitz Maschinen- und Anlagenbau GmbH, 8754 Großostheim | Schwenkrohrsystem fuer betonpumpen |
US5037275A (en) * | 1987-06-27 | 1991-08-06 | Karl Schlecht | Pipe junction switch for two-cylinder thick-material pump |
US5302094A (en) * | 1988-07-19 | 1994-04-12 | Putzmeister-Werk Maschinenfabrik Gmbh | Tube switch for a double-cylinder sludge pump |
DE3824466A1 (de) * | 1988-07-19 | 1990-01-25 | Putzmeister Maschf | Mehrzylinder-dickstoffpumpe |
US5180294A (en) * | 1992-03-04 | 1993-01-19 | Confloat Consulting Ltd. | Concrete pump having pressurized seal for swing tube |
DE19503986A1 (de) * | 1995-02-07 | 1996-08-08 | Hudelmaier Ulrike | Verfahren und Vorrichtung zum Fördern von Beton oder anderen Dickstoffen |
US6857861B2 (en) * | 2002-05-15 | 2005-02-22 | Kennametal Inc. | Ring for concrete pump |
KR20040057014A (ko) * | 2002-12-24 | 2004-07-01 | 한락수 | 콘크리트 펌프용 접동 구조물 및 그 제작방법 |
DE10343802B4 (de) * | 2003-09-22 | 2007-12-06 | Schwing Gmbh | Kolben-Dickstoffpumpe mit kontinuierlichem Förderstrom |
WO2007111689A2 (en) * | 2005-11-08 | 2007-10-04 | Good Earth Tools, Inc. | Sealing rings for abrasive slurry pumps |
CN101718265B (zh) * | 2009-12-16 | 2012-10-10 | 三一重工股份有限公司 | 泵送设备的密封组件、分配阀总成、泵送设备及控制方法 |
-
2013
- 2013-08-13 DE DE102013215990.0A patent/DE102013215990A1/de not_active Withdrawn
-
2014
- 2014-04-24 KR KR1020167002999A patent/KR20160041910A/ko not_active Application Discontinuation
- 2014-04-24 CN CN201480045266.6A patent/CN105683569A/zh active Pending
- 2014-04-24 WO PCT/EP2014/058291 patent/WO2015022088A1/de active Application Filing
- 2014-04-24 EP EP14719011.0A patent/EP3033523B1/de active Active
- 2014-04-24 JP JP2016533842A patent/JP2016528433A/ja active Pending
-
2016
- 2016-02-12 US US15/042,202 patent/US20160160851A1/en not_active Abandoned
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2015022088A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2016528433A (ja) | 2016-09-15 |
CN105683569A (zh) | 2016-06-15 |
KR20160041910A (ko) | 2016-04-18 |
EP3033523B1 (de) | 2017-08-23 |
DE102013215990A1 (de) | 2015-02-19 |
WO2015022088A1 (de) | 2015-02-19 |
US20160160851A1 (en) | 2016-06-09 |
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