EP3990783A1 - Dickstoffpumpe und verfahren zum fördern eines dickstoffs - Google Patents
Dickstoffpumpe und verfahren zum fördern eines dickstoffsInfo
- Publication number
- EP3990783A1 EP3990783A1 EP20736940.6A EP20736940A EP3990783A1 EP 3990783 A1 EP3990783 A1 EP 3990783A1 EP 20736940 A EP20736940 A EP 20736940A EP 3990783 A1 EP3990783 A1 EP 3990783A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- thick matter
- conveying
- inlet opening
- outlet opening
- 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.)
- Withdrawn
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
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/001—Pumps for particular liquids
- F04C13/002—Pumps for particular liquids for homogeneous viscous liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/14—Conveying liquids or viscous products by pumping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/02—Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C2/063—Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2210/00—Fluid
- F04C2210/10—Fluid working
- F04C2210/1033—Concrete
Definitions
- the invention relates to a thick matter pump and a method for conveying a thick matter.
- Thick matter pumps are used to convey thick matter such as fresh concrete or mortar. The thick matter is sucked in from a supply and conveyed towards an outlet of the thick matter pump.
- Typical thick matter pumps from the prior art comprise a plurality of delivery cylinders, which is why the pumps take up a lot of space, EP 3 282 124 A1. From JP 61053481 a thick matter pump with a pumping chamber is known which extends along a circular path.
- the invention is based on the object of presenting a thick matter pump and an associated method so that the friction is reduced during operation of the thick matter pump. Based on the stated prior art, the object is achieved with the features of the independent claims. Advantageous embodiments are given in the subclaims.
- the thick matter pump comprises a delivery chamber which extends along a closed path from an inlet opening via an outlet opening back to the inlet opening.
- the delivery space forms a first connection path and a second connection path between the inlet opening and the outlet opening.
- a first piston is arranged in the conveying chamber, which is designed to carry out a conveying movement along the first connection path of the conveying chamber, so that with the conveying movement, thick matter is conveyed out of the conveying chamber through the outlet opening and thick matter is introduced into the conveying chamber through the inlet opening.
- a blocking element is arranged in the delivery chamber, which blocks the second connection path in a first state and releases the second connection path in a second state in order to allow a movement of the first piston along the second connection path.
- a wall shell delimiting the pumping chamber connects to the first piston.
- the wall shell extends over the entire length of the delivery chamber and is moved together with the first piston.
- the conveyed material has essentially the same speed along the conveying space as the wall shell. This reduces the friction between the wall of the För derraums and the conveyed material, so that the friction losses during operation of the pump are reduced.
- the wall shell connected to the piston has a large extension in the circumferential direction.
- the circumferential direction extends in a plane which includes a right angle with the direction of movement of the piston.
- terms such as circumferential direction and circumferential section each refer to the cross section of the conveying chamber.
- the direction in which the piston moves along the delivery space is referred to as the longitudinal direction of the delivery space.
- the thick matter pump can comprise a drive motor. Between the drive motor and the piston, a connecting element arranged radially outside of a wall component of the delivery chamber can extend, with which the movement of the piston is driven.
- the extension of the wall shell in the circumferential direction is preferably greater than the extension of the connecting part in a plane spanned with the circumferential direction.
- the wall shell can extend in the circumferential direction over at least 30 °, preferably at least 60 °, more preferably at least 90 °. This information relates to an angle that the wall shell covers in relation to a center point of the conveying chamber.
- the expansion of the wall shell in the circumferential direction can be constant over the length of the conveying chamber.
- the locking element is a locking slide, which is arranged in the second connection path in the first state and which is laterally spaced from the second connection path in the second state so that the first piston can pass through the second connection path.
- the change of the locking slide between the first state and the second to stand takes place by moving the locking slide in since Licher direction.
- a movement in the lateral direction is generally referred to as a movement which forms an angle with the direction of movement of the piston along the delivery chamber, so that the locking slide moves away from the connection path or approaches the connection path.
- the movement of the locking slide can be a movement in the radial direction, so that the direction of movement of the locking slide forms a right angle with the direction of movement of the piston.
- the thick matter pump can be set up in such a way that the second connection path is blocked during the delivery movement of the first piston and that the second connection path is released in an intermediate phase between a first delivery movement and a second delivery movement of the first piston.
- the first piston can then carry out a continuous movement along the delivery chamber, whereby by adjusting the locking element There is a change between funding phases in which thick matter is conveyed and intermediate phases in which no thick matter is conveyed.
- the blocking element is a second piston, which is also designed to carry out a conveying movement along the first connecting path of the same conveying space.
- the direction of movement of the conveying movement of the first piston can coincide with the direction of movement of the conveying movement of the second piston.
- the second piston can block the second connection path during the conveying movement of the first piston and vice versa. If the second piston blocks the second connection path, the second piston in the sense of the invention is a blocking element in the first state. When the second piston has a different position in the delivery space, the second connection path is free, so that the second piston is a blocking element in the second state.
- the thick matter pump can be designed so that the second piston is at a standstill during the conveying movement of the first piston.
- the standstill can exist during at least 60%, preferably at least 80% of the conveying movement of the first piston and further preferably extends over the entire conveying movement of the first piston.
- the second piston can be arranged within the delivery chamber in an intermediate position between the outlet opening and the inlet opening. Since there is no direct connection between the inlet and the outlet, the static pressure that is present at the outlet of the pump can be maintained in the pumping chamber.
- the delivery flow can be interrupted between the end of the delivery movement of the first piston and the start of the delivery movement of the second piston.
- This interruption of the delivery flow can be avoided by an embodiment of the invention in which the delivery space comprises an inlet opening and two outlet openings and in which three pistons are arranged in the delivery space.
- the delivery flow is interrupted in the phase in which one of the pistons moves along the second connection path from the outlet opening to the inlet opening.
- the thick material pump has a third piston
- the phase in which a first piston moves from the outlet opening to the inlet opening can be bridged by a second piston blocking the (third) connection path between the first outlet opening and the second outlet opening the third piston conveys thick matter through the first outlet opening.
- the first outlet opening and the second outlet opening can be connected to one another by a common outlet pipe.
- the thick material pump can comprise a control unit which controls the movement of the three pistons in a suitable manner.
- the conveying space can, for example, be circular in cross section or have the shape of a segment of a circle.
- the cross section can be constant along the length of the conveying space.
- a cross-section is a plane that forms a right angle with the direction of movement of the pistons.
- the longitudinal direction corresponds to the direction of movement of the pistons. Viewed in the longitudinal direction, the conveying space can form a closed path. This enables the pistons to move along again and again without reversing their direction of movement can move the conveying chamber.
- the longitudinal direction of the delivery space can span a circular path so that the pistons move along a circular path. In combination with a circular cross-section, there is a delivery space in the form of a torus.
- the thick matter pump can comprise a drive motor with which the movement of the first piston is driven along the delivery chamber.
- a drive shaft for the conveying movement can be provided which is coaxial with the central axis of the circular path.
- the first piston can be connected to the drive shaft by a connecting element extending in the radial direction.
- a second drive motor can be provided for moving the locking element. If the locking element is a locking slide, the second drive motor can, for example, drive a pivoting movement or a linear movement or a combination of both.
- the second drive motor can be used to drive the first piston and the second piston independently of one another. This makes it possible to move the pistons at different speeds or to move one piston while the other piston is at a standstill.
- a clutch can be assigned to each piston, the clutches being coupled to the same drive motor.
- a double clutch is assigned to each piston, the piston in a first state of the double clutch is coupled to the drive motor and in a second to stand the double clutch of the piston is coupled to a frame of the thick material pump.
- the drive can be designed so that it rotates at a constant speed.
- the alternating movement of the pistons can be achieved by suitable coupling of the pistons to the drive shaft.
- the thick matter pump can comprise a control unit, the An
- the first piston and / or the second piston can be designed in such a way that a circumferential surface of the piston seals with the wall surface of the delivery chamber.
- the sealing circumferential surface can, apart from a section taken by the connecting element, stretch over the entire circumference of the piston.
- a wall shell connects to the piston and is moved together with the piston.
- the wall shell can limit the conveying space, so form part of the wall of the conveying space.
- the wall shell can extend over the entire length of the conveyor chamber. In this way, the friction loss in the thick matter pump can be reduced, because there is a relative movement between the conveyed thick material and the wall of the pumping chamber during a conveying movement of the piston in question only in those Be rich that are not covered by the wall shell.
- the thick matter pump can comprise a first wall shell, which is connected to the first piston, and a second wall shell, which is connected to the second piston.
- first wall shell can extend along a different circumferential section than the second wall shell.
- the first wall shell and the second Wall shells can overlap with one another in the circumferential direction or be free of an overlap.
- the second wall shell can have the same features that are described in connection with the first wall shell.
- the conveying space can, viewed in cross section, have a circumferential section which is kept free from both the first wall shell and the second wall shell. This circumferential section can be aligned with the inlet opening and / or the outlet opening of the thick matter pump. The thick material can then enter the conveying chamber or exit from the conveying chamber without being impaired by the wall shell.
- the wall of the pumping space can be formed by a housing of the thick matter pump.
- the housing can be limited to this peripheral portion.
- a housing that overlaps one or both wall shells is also possible.
- a housing part arranged between the wall shells can delimit the För derraum in a straight line in cross section, so that the För derraum has the shape of a segment of a circle in cross section.
- the inlet opening and / or the outlet opening can be formed in this housing part.
- the wall of the conveying chamber is composed of wall shells and housing parts that extend over different sections of the conveying chamber, it is advantageous if a sealing element is arranged at the transition between a wall shell and a housing or at the transition between two wall shells.
- the sealing element can be formed as a sealing ring that extends over the entire length of the delivery chamber.
- the inlet opening and the outlet opening can be offset relative to one another when viewed in the longitudinal direction of the delivery space.
- the conveying space forms a closed path, there are two connecting paths along which one can move in the conveying space from the inlet opening to the outlet opening.
- the thick matter pump can be designed so that the first connection path is used to convey thick matter while the second connection path is blocked.
- the first connection path can extend over at least 70%, preferably at least 80%, more preferably at least 90% of the length of the conveying space.
- the inlet opening and the outlet opening can overlap.
- Corresponding positions of the inlet opening and the outlet opening in the cross section of the conveying chamber are also possible.
- the inlet opening and / or the outlet opening can extend in the radial direction in relation to a central axis of the circular path.
- the inlet opening and / or the outlet opening can point inwards (that is to say in the direction of the central axis). It is also possible that the inlet opening and / or the outlet opening point radially outward in the opposite direction. Other positions between these two positions aligned in the radial direction are also possible.
- the first piston can have a circumferential section which passes over the outlet opening and / or the inlet opening during the conveying movement.
- This circumferential section can be formed by a connecting piece connected to the piston, the connecting piece being made of a harder material than The piston.
- the connector can consist of Hartme tall. Stones and granular components of the thick matter can be crushed between the connection piece and an edge of the inlet opening or outlet opening over which it is driven.
- the relevant area of the inlet opening and / or the outlet opening can be formed by an insert piece that is also made of a harder material, for example hard metal.
- connection piece can have a front surface pointing in the direction of movement which forms an angle of at least 60 °, preferably at least 70 °, further preferably at least with the circumferential surface of the piston 80 ° includes.
- the front surface is a planar surface oriented perpendicular to the direction of movement.
- the first piston can have a circumferential section which seals with the wall of the delivery space without passing over the inlet opening and the outlet opening.
- This circumferential section of the piston can be provided with a seal package which rests against the wall of the pumping chamber.
- the wall of the delivery space in this peripheral section can be formed by the wall shell of the other piston.
- the sealing package and the connector can be designed as Ver wear parts that are regularly replaced when the thick matter pump is in operation.
- the thick matter pump can be designed so that the wearing parts can be replaced without having to dismantle the thick matter pump. For example, it may be sufficient to remove a housing section arranged between the wall shell of the first piston and the wall shell of the second piston in order to gain access to the wear and tear parts to receive.
- the piston may have a cavity arranged between its front surface and its rear surface, within which the wear parts are mounted.
- a Vor circulllbe container can be connected to the inlet opening of the thick matter pump.
- a conveying line can be connected to the outlet opening of the thick matter pump, along which the thick matter is conveyed to a desired discharge location.
- the delivery flow may be interrupted if the first piston and the second piston are moved together.
- the thick matter pump can be equipped with an additional delivery cylinder.
- the additional delivery cylinder can be coupled to the outlet end of the thick matter pump, for example by a connecting pipe which extends between the outlet opening and the additional delivery cylinder or between the delivery line and the additional delivery cylinder.
- the additional delivery cylinder can be set up such that it performs a forward movement while the pistons of the thick matter pump are moved together.
- the delivery cylinder can be set up in such a way that it performs a backward movement when one of the pistons of the thick matter pump conveys thick matter through the outlet opening.
- An active drive for example in the form of a hydraulic drive, can be provided for the forward movement of the piston arranged in the delivery cylinder. The reverse The active drive can also move the piston. It is also possible that the piston is moved back passively by the pressure of the thick matter being conveyed.
- the invention also relates to a method for conveying thick matter.
- a first piston is moved in a delivery space which stretches along a closed path from an inlet opening via an outlet opening back to the inlet opening, so that the delivery space forms a first connection path and a second connection path between the inlet opening and the outlet opening.
- the first piston is moved along the first connection path from the inlet opening in the direction of the outlet opening in order to convey thick material through the outlet opening and to introduce thick material through the inlet opening into the delivery chamber, while the second connection path is blocked.
- the first piston is moved along the second connection path.
- the process for conveying thick matter can comprise one or more of the following steps.
- the first piston can pass over the inlet opening at the beginning of the conveying movement.
- the first piston can pass over the outlet opening.
- the intermediate phase can lie between the end of a first conveying movement and the beginning of a second conveying movement.
- the part of the conveying space lying between the first piston and the outlet opening can be filled with thick matter.
- the volume in this section of the conveying chamber becomes smaller and thick matter leaves the conveying chamber through the outlet opening.
- the volume in the section of the delivery space enclosed between the first piston and the blocking element increases. This section is accessible via the inlet opening, so that further thick matter is sucked into this section of the conveying chamber through the inlet opening.
- the locking slide is removed from the delivery chamber in the transition phase, so that the first piston can pass the locking slide. After the first piston has passed the inlet opening and the gate valve is closed again, the next conveying movement can begin.
- the method can be developed with further features that are described in connection with the thick matter pump according to the invention be.
- the thick matter pump can be developed with further features which are described in connection with the method according to the invention.
- the invention also encompasses embodiments in which there is no wall shell that is moved with the piston.
- Fig. 1 a concrete pump vehicle with a erfindungsge MAESSEN thick matter pump
- Fig. 2 a perspective view of an invention
- FIG. 5 various sectional views from FIG. 4;
- Fig. 6, 7 the view according to FIG. 5 in an alternative embodiment of the invention.
- Fig. 10-12 schematic representations of various Ausense approximate forms of Dickstoffpum pen according to the invention
- a truck 14 shown in FIG. 1 is equipped with a concrete pump 15 which conveys liquid concrete from a pre-filling container 16 through a delivery line 17.
- the concrete pump is a thick matter pump 15 within the meaning of the invention.
- the delivery line 17 extends along a mast arm 18 which is rotatably mounted on a turntable 19.
- the mast arm 18 comprises three mast arm segments 20, 21, 22 which are articulated to one another. By pivoting the mast arm segments 20, 21, 22 relative to one another via the joints, the mast arm 18 can switch between a folded state and an unfolded state.
- the delivery line 17 extends beyond the distal end of the third boom segment 22, so that when the boom arm 18 is unfolded, the liquid concrete can be brought out in an area remote from the concrete pump 15.
- the thick matter pump 15 comprises a delivery space 23 which defines a circular path.
- An inlet opening 24 of the thick material pump 15 is connected to the pre-fill container 16.
- An outlet opening 25 of the thick matter pump 15 is connected to the För der réelle 17.
- a first piston 26 and a second piston 27 are arranged in the delivery chamber 23, each of which fill the cross section of the delivery chamber 23.
- the pistons 26, 27 are connected to a central drive shaft 28 so that the pistons 26, 27 are driven independently of one another can be.
- a rotation of the drive shaft 28 is transmitted via connecting elements 29, 30 to the first piston 26 and the second piston 27, so that the pistons 26, 27 move in the direction of movement 31 of the conveying movement along the circular path of the conveying chamber 23.
- the second piston 27 is arranged in an intermediate position 32 between the inlet opening 24 and the outlet opening 25 and blocks the short connecting path between the inlet opening 24 and the outlet opening 25.
- the first piston 26 is coupled to the drive shaft 28 so that it performs a conveying movement in the conveying space 23.
- the conveying movement extends along the long connec tion path 33 between the inlet opening 24 and the outlet opening 25.
- the first piston 26 has passed over the inlet opening 24.
- thick matter is conveyed out of the conveying chamber 23 through the outlet opening 25.
- thick matter is sucked out of the pre-filling container 16 so that the space between the second piston 26 and the inlet opening 24 is filled with thick matter again at the end of the conveying movement.
- the sequence of the conveying movement of the first piston 26 is indicated with FIGS. 13A-13C.
- the first piston 26 passes over the outlet opening 25 (FIG. 13D), a residual amount of the thick matter is trapped between the first piston 26 and the second piston 27.
- the first piston 26 and the second piston 27 are moved together in the conveying direction 31 until the second piston 27 has passed the inlet opening 24 and the first piston is in the intermediate position 32 between the inlet opening 24 and the outlet opening 25.
- the thick matter pump is then again in the initial state according to FIG. 13A, the positions of the pistons 26, 27 being interchanged.
- Fig. 4 the thick matter pump is shown in a state in which the second piston 27 is arranged in the intermediate position 32 between the inlet opening 24 and the outlet opening 25 and the first piston 26 has covered part of the delivery path.
- the first piston 26 and the second piston 27 are surrounded by a housing 34, a sealing gap being formed between the circumference of the pistons 26, 27 and the housing 34.
- the housing 34 is interrupted on its outside by the inlet opening 24 and the outlet opening 25.
- On the inside a umlau fender slot 35 is formed, through which the connecting elements 29 extend, via which the pistons 26, 27 are coupled to the drive shaft 28 to.
- the connecting elements 29, 30 are designed as disk-shaped elements, so that the connecting elements 29, 30 fill the slot 35 over its entire length.
- the first connecting element 29 is connected to a first wall shell 36 and the second connecting element 30 is connected to a second wall shell 37.
- the wall shells 36, 37 viewed in cross section, extend along the inner surface of the housing 34 and viewed in the longitudinal direction over the entire length of the conveying chamber 23.
- Each of the wall shells 36, 37 extends over a circumferential angle 58 of more than 90 °.
- the two wall shells 36, 37 cover a circumferential angle of more than 180 °.
- a free space is enclosed between the peripheral ends of the wall shells 36, 37 which corresponds to the diameter of the inlet opening 24 and the outlet opening 25. This space is required so that the thick material can enter the conveying chamber 23 or from the conveying room 23 can escape.
- the wall shells 36, 37 move together with the thick matter along the conveying path, the internal friction of the thick matter pump is reduced.
- the housing surrounding the wall shells 36, 37 is omitted.
- the wall shells 36, 37 themselves form the outer closure of the delivery space 23.
- the housing is limited to a cylindrical housing part 38 which delimits the outer circumference of the delivery space 23.
- the inlet opening 24 and the outlet opening 25 are formed.
- a circumferential sealing ring 39 is arranged between the wall shell 37 and the housing part 38 and extends over the entire length of the delivery chamber 23. With the sealing ring 39, the pumping chamber is sealed at the transition between the wall shell 37 and the housing part 38.
- a second sealing ring 40 seals the transition between the other wall shell 36 and the housing part 38.
- a third sealing ring 41 is arranged between the connecting elements 29, 30.
- the first piston 26 is provided with a sealing element 42 which extends over a circumferential section of the piston 26.
- the sealing element 42 forms a seal between the first piston 26 and the wall shell 37 of the second piston 27.
- a termination piece 43 made of hard metal is arranged on a peripheral section of the first piston 26. With the hard metal end piece 43 stones and other granular components can be broken up, which are clamped between the piston 26 and an edge of the opening when the inlet opening 24 or the outlet opening 25 is passed over. The edges of the openings can be formed using appropriate hard metal inserts.
- the hard metal end piece 43 and the sealing element 42 are wearing parts that have to be replaced regularly.
- the pistons 26, 27 each have an internal cavity 44 which is accessible from the outside after the peripheral housing part 38 has been removed. So it only has to be solved the peripheral Ge housing part 38 in order to exchange the wear parts, a further dismantling of the thick matter pump is not necessary.
- Fig. 9 a possible structural design of the thick matter pump is shown.
- Two roller bearings 44, 45 are arranged between the frame of the pump, to which the housing part 38 is connected, and the moving parts that rotate with the drive shaft 28.
- a third roller bearing which is not shown in FIG. 9, can be arranged between the parts moving with the first piston 26 and the moving parts with the second piston 27.
- a first drive motor 46 drives the first piston 26, and a second drive motor 47 drives the second piston 27, as can be seen even more clearly from the schematic illustration in FIG. 10.
- both pistons are driven by a common drive motor 46.
- the first piston 26 is assigned a double clutch 47 which couples the first piston either to the drive shaft 28 or to the housing 34. If the first piston 26 is coupled to the drive shaft 28, it follows the rotational movement of the drive shaft 28. If the first piston 26 is coupled to the housing 34, it has a fixed position relative to the housing 34.
- a corresponding double clutch 48 is for the second piston 27 is provided.
- the drive motor 46 between the Doppelkupp lungs 47, 48 is arranged.
- the function of the double clutches 47, 48 is identical.
- the delivery flow is interrupted when the pistons 26, 27 move together in the delivery direction 31. This is the case in the phase between the state according to FIG. 13D and the state according to FIG. 13A.
- the thick matter pump according to FIG. 14 can be equipped with an additional delivery cylinder 49.
- a transition tube 50 connects to the outlet opening 25 and connects to the För derrohr 17.
- the additional delivery cylinder 49 is connected to the transition pipe.
- a delivery piston 51 of the delivery cylinder 49 is withdrawn while thick matter is pumped through the outlet opening 25 of the thick matter pump. If the delivery flow through the outlet opening 25 is interrupted, the delivery piston 51 can be moved forward again hydraulically in order to bridge the interruption in the delivery flow.
- the thick matter pump is able to convey liquid concrete in a continuous För derstrom.
- FIG. 15 shows an embodiment of a thick matter pump in which the second connecting path 53 of the pumping chamber 23, which is arranged between the outlet opening 25 and the inlet opening 24, is provided with a locking slide 52 which can be moved in the radial direction.
- the blocking slide 52 blocks the second connection path 53.
- the blocking slide 52 is moved outward so that the first piston 26 passes the second connection path 53 can.
- the process when conveying thick matter corresponds to the Ausry approximately form with two pistons 26, 27 with the difference that the locking slide 52 blocks the second connec tion path 53 with each conveying movement, while the first piston 26 closes with each Conveying movement moved along the first connecting path 33.
- the locking slide 52 In the transition phase between two conveying movements of the piston 26, the locking slide 52 is moved to the side so that it releases the second connecting path 53.
- the piston 26 can pass the gate valve 52 and proceed to the next conveying movement.
- the thick matter pump comprises three pistons 26, 27, 56 and two outlet openings 25, 55, both of which open into a common outlet pipe 57.
- the transition phase in which the first piston 26 moves between the second outlet opening 55 and the inlet opening 24 is bridged in that the third piston 56 is arranged between the first outlet opening 25 and the second outlet opening 55.
- the second piston 27 has a higher speed than the first piston 26, thick matter is still conveyed through the outlet pipe 57, although part of the thick matter conveyed through the first outlet opening 25 flows through the second outlet opening 55 back to the rear of the first piston 26.
- the third piston 56 and the second piston 26 are set in motion so that the second piston 27 initially conveys thick matter through the second outlet opening 55 at the end of its conveying movement, while the The next conveying movement of the first piston 26 can begin with which the first piston 26 conveys thick matter through the first outlet opening 25.
- the interruption of the delivery flow occurring in other embodiments of the thick matter pump can be avoided, which results from the fact that two pistons move together between the outlet opening and the inlet opening or that the locking slide is opened.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019117356.6A DE102019117356A1 (de) | 2019-06-27 | 2019-06-27 | Dickstoffpumpe und Verfahren zum Fördern eines Dickstoffs |
PCT/EP2020/067792 WO2020260443A1 (de) | 2019-06-27 | 2020-06-25 | Dickstoffpumpe und verfahren zum fördern eines dickstoffs |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3990783A1 true EP3990783A1 (de) | 2022-05-04 |
Family
ID=71515116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20736940.6A Withdrawn EP3990783A1 (de) | 2019-06-27 | 2020-06-25 | Dickstoffpumpe und verfahren zum fördern eines dickstoffs |
Country Status (7)
Country | Link |
---|---|
US (1) | US20220205446A1 (de) |
EP (1) | EP3990783A1 (de) |
JP (1) | JP2022532436A (de) |
KR (1) | KR20220008938A (de) |
CN (1) | CN114008377A (de) |
DE (1) | DE102019117356A1 (de) |
WO (1) | WO2020260443A1 (de) |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT18012B (de) * | 1902-10-01 | 1904-10-25 | Carlo Metlicovich | |
US1653343A (en) * | 1924-05-16 | 1927-12-20 | Christensen Christen Henrik | Wing pump |
DE1401392A1 (de) * | 1960-12-02 | 1969-07-31 | Luigi Bartolozzi | Als Motor oder Pumpe arbeitende Vorrichtung mit Kammern wechselnden Volumens |
CH541076A (it) * | 1971-05-24 | 1973-08-31 | Alpeggio Invest | Pompa per impasti densi, in particolare per calcestruzzo |
US3829257A (en) * | 1971-10-15 | 1974-08-13 | Peterson Machine Tool Inc | Rotary fluid engine |
DE2162212A1 (de) * | 1971-12-15 | 1973-06-28 | Gerhart Clemens | Pumpe, insbesondere zur foerderung von beton, moertel etc |
DE2601347A1 (de) * | 1976-01-15 | 1977-07-28 | Wibau Gmbh | Pumpe, insbesondere zur foerderung von zementbeton o.dgl. |
US4193743A (en) * | 1976-03-17 | 1980-03-18 | Maschinenfabrik Walter Scheele Kg | Oscillatory pump for the transport of viscous materials |
GR64871B (en) | 1977-12-16 | 1980-06-05 | Ressorts Ind | Resilient mouuting for a rail on its support |
DE2909561A1 (de) * | 1979-03-12 | 1980-09-18 | Alexander Entschew | Rotationskolbenmaschine |
JPS6153481A (ja) * | 1984-08-22 | 1986-03-17 | Mitsubishi Heavy Ind Ltd | コンクリ−ト圧送装置 |
DE4341607A1 (de) * | 1993-02-02 | 1994-08-04 | Putzmeister Maschf | Verfahren zum Fördern von vorzerkleinerten Metallschrott oder dergleichen Festkörper enthaltenden Dickstoffen |
DE19810867C2 (de) * | 1998-03-13 | 2000-02-24 | Bosch Gmbh Robert | Kraftstoffpumpen-Anordnung |
WO2008006030A2 (en) * | 2006-07-06 | 2008-01-10 | The Board Of Regents Of The University Of Texas System | Positive displacement pump system and method |
DE202008013678U1 (de) * | 2008-10-15 | 2009-01-15 | Hannibal, Ralf | Dickstoffpumpe (Schieberschwenkpumpe) |
GB2477276A (en) * | 2010-01-27 | 2011-08-03 | Arab Science & Technology Foundation | Method and apparatus for pumping a fluid using magnetic pistons |
JP6011861B2 (ja) * | 2010-09-07 | 2016-10-19 | パナソニックIpマネジメント株式会社 | 圧縮機およびそれを用いた冷凍サイクル装置 |
EP3282124B1 (de) * | 2016-08-11 | 2023-08-02 | Putzmeister Engineering GmbH | Dickstoffpumpe |
-
2019
- 2019-06-27 DE DE102019117356.6A patent/DE102019117356A1/de not_active Ceased
-
2020
- 2020-06-25 KR KR1020227000247A patent/KR20220008938A/ko active IP Right Grant
- 2020-06-25 WO PCT/EP2020/067792 patent/WO2020260443A1/de active Application Filing
- 2020-06-25 US US17/622,583 patent/US20220205446A1/en not_active Abandoned
- 2020-06-25 EP EP20736940.6A patent/EP3990783A1/de not_active Withdrawn
- 2020-06-25 JP JP2021576333A patent/JP2022532436A/ja active Pending
- 2020-06-25 CN CN202080046833.5A patent/CN114008377A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
DE102019117356A1 (de) | 2020-12-31 |
WO2020260443A1 (de) | 2020-12-30 |
CN114008377A (zh) | 2022-02-01 |
US20220205446A1 (en) | 2022-06-30 |
KR20220008938A (ko) | 2022-01-21 |
JP2022532436A (ja) | 2022-07-14 |
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