EP2755802B1 - Device for waterjet cutting with abrasive - Google Patents
Device for waterjet cutting with abrasive Download PDFInfo
- Publication number
- EP2755802B1 EP2755802B1 EP11785613.8A EP11785613A EP2755802B1 EP 2755802 B1 EP2755802 B1 EP 2755802B1 EP 11785613 A EP11785613 A EP 11785613A EP 2755802 B1 EP2755802 B1 EP 2755802B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- opening
- abrasive
- chamber
- slide
- water
- 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.)
- Active
Links
- 238000005520 cutting process Methods 0.000 title claims description 34
- 239000003082 abrasive agent Substances 0.000 claims description 37
- 238000007789 sealing Methods 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 239000000725 suspension Substances 0.000 claims description 27
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 2
- 230000005484 gravity Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
Definitions
- Water-abrasive suspension cutters are used to cut materials by means of a high-pressure water jet to which an abrasive is added.
- a water-abrasive suspension cutting system the water is mixed with the abrasive agent at high pressure upstream of an outlet gland.
- a Abrasivsch employer which is designed as a pressure vessel, are performed.
- Such a system is z. B. off EP 1 199 136 known.
- the problem with these systems is the refilling of the abrasive, since the plant must be taken out of service, the Abrasiffenbehalter must be brought into a pressureless state and only then can be filled. This is particularly problematic in industrial applications in which continuous cutting is desired.
- the water-abrasive suspension cutting system has a high-pressure source, for example a high-pressure pump, which provides water under high pressure. This is a very high pressure, preferably a pressure up to 2500 bar or higher. Furthermore, the system has an outlet nozzle through which the pressurized water mixed with abrasive emerges for cutting.
- the discharge nozzle is connected to the high pressure source via a high pressure line, with an abrasive supply means connected to the high pressure line being provided. Ie. As usual in the suspension cutting process, the mixture between water and abrasive in the high pressure area of the plant.
- the high-pressure water is passed through a pressure vessel in which the abrasive is and in the pressure vessel, there is a mixture between water and abrasive and the water flushes the abrasive out of the high pressure vessel and performs it with up to the Outlet nozzle, where it then emerges together with the abrasive for cutting.
- the abrasive supply means serves, during operation of the plant, abrasive in the high pressure area, d. H. to introduce into the high pressure line without having to take the plant out of service and in particular without having to bring the high pressure area or part of the high pressure area in a pressureless state.
- the Abrasivstoffzussel takes place in the high pressure area so that no air is introduced into the high pressure area.
- the abrasive agent supply device has a lock with at least one chamber.
- the chamber has at least a first fireable opening. By means of this opening, the chamber can be opened to the high-pressure line and closed again with respect to the high-pressure line.
- this first Opening optionally be opened to a Abrasivmittezuschreib out or it may be provided a further opening in the chamber, which can be opened to a Abrasivmittezuschreib out.
- the chamber can thus be opened alternately by means of the at least one opening or a plurality of openings to an abrasive agent supply and to the high-pressure line.
- the chamber forms a lock, which makes it possible to introduce the abrasive or an abrasive-water mixture at least with ambient pressure or a lower pressure than in the high-pressure line to introduce into the chamber.
- the chamber can then be closed to the environment or to Abrasivstoffzuschreib out and the high pressure area, ie the high pressure line to be opened so that then the abrasive from the chamber can enter the high pressure line, without causing a significant pressure drop in the high pressure line ,
- the pressure in the chamber may be increased to establish pressure equalization of the high pressure line prior to opening the opening.
- the chamber has two openings, which can be closed by valves, such as ball valves.
- the chamber can be opened so alternately to Abrasivstoffzucht or to the high-pressure line.
- the abrasive-feeding device has a movable slide, in which the at least one chamber is trained.
- the slider is movable between at least two different positions. For this purpose, he preferably moves in a suitable leadership.
- the at least one chamber formed in the slide has the at least one first opening, which serves to allow abrasive material, which has previously been received in the chamber, to escape into the high-pressure region or the high-pressure line when the opening of the chamber is in one Position is moved, in which it faces an opening, that is, an inlet opening of the high-pressure line.
- the opening can also serve to fill the chamber with abrasive. However, this is preferably a second opening, d. H. an inlet opening is provided, as will be described below.
- the first position is a position in which the first opening of the chamber is opposite to an inlet opening of the high-pressure line, ie the high-pressure area.
- abrasive can escape from the chamber in the high pressure area.
- the chamber is otherwise sealed to the outside, so that no pressure loss from the high pressure area occurs and in this way from the chamber of the high pressure area during operation, without having to reduce the pressure in the high pressure area, can be filled.
- the first opening of the chamber is located either opposite a closed wall or opposite an abrasive supply port.
- the chamber When the first opening faces an abrasive supply port, the chamber may be filled with abrasive by the abrasive supply port, which is the exit port of an abrasive supply. If in the second position, the first opening of a closed wall opposite and thus closed, the filling of the chamber is preferably carried out with abrasive by the aforesaid second opening, ie by a separate inlet opening, which is closed in the first position of the slide, for example by facing a closed wall.
- the chamber of the slider is moved by movement of the slider from a filling position, i. H. the second position, in a discharge position, d. H. the first position, moved.
- a filling position i. H. the second position
- a discharge position d. H. the first position
- the chamber is filled with loose abrasive, which is mixed with water, so that the abrasive is introduced into the chamber without air.
- filling the high pressure area is closed by preferably a wall of the slide of the inlet opening of the high-pressure line sealingly opposite.
- the abrasive is preferably evacuated by gravity from the chamber into the high pressure line.
- the movable slide has at least two chambers formed therein, which each have at least one first opening.
- the slide in which the at least two chambers are formed, is movable between at least two positions.
- the first openings of the chambers are alternately connected to an inlet opening of the high pressure line or the High pressure range brought to cover, so that can be alternately emptied into the high pressure area.
- the opening of a first chamber in a first position of the slide, is positioned opposite an inlet opening of the high-pressure line, while the opening of a second chamber is opposite to a closed wall or an abrasive medium-feeding opening. If the opening of the second chamber is opposite to an abrasive supply opening, it can be used to refill the chamber with abrasive.
- the first chamber which was previously filled with abrasive, is emptied into the high-pressure area or the high-pressure line.
- the first chamber is closed to the outside, so that the high pressure line or the high pressure area remains sealed outside.
- the second chamber can be filled at the same time. This can be done either through the same opening or through a second opening, ie a separate inlet opening, in which case the first opening, as described, may be opposite a closed wall to be closed in this position.
- a chamber is completely closed in one position, that is neither emptied nor filled.
- the opening of the second chamber is then positioned opposite an inlet opening of the high-pressure line, while the opening of the first chamber is opposite to a closed wall or an abrasive-medium feed opening.
- the second chamber can then be emptied into the high-pressure area, while the first chamber can be filled at the same time or, in the event that more than two chambers should be provided, is in an intermediate position in which it is neither filled nor emptied ,
- the arrangement of at least two separate chambers it is possible to fill a chamber in the unpressurized state, while the other chamber simultaneously opened and emptied to the high pressure area becomes. In this way it is possible by alternately filling and emptying of at least two chambers to fill the high-pressure area during operation quasi-continuously with abrasive.
- the two chambers thus form locks, which are alternately filled and emptied.
- the high-pressure line preferably has an inlet opening and the openings of the at least two chambers can be brought alternately into a position opposite this one inlet opening by movement of the slide.
- the slide is preferably designed so that, when the inlet opening of the high-pressure line is not opposite an opening of a chamber, the inlet opening of the high-pressure line is closed by a wall of the slide, so that the high pressure area remains sealed to the outside.
- an opening of a chamber is opposite the entrance opening, communication is established from the entrance opening to the chamber so that the abrasive agent can enter the high pressure area from the chamber. This is preferably done by gravity, d. H. the opening of the chamber is arranged on the underside thereof.
- a second chamber is removed from the inlet opening of the high-pressure line, so that this second chamber is not connected to the high-pressure area and can thus be filled simultaneously with abrasive in the unpressurized state.
- the second chamber can then be brought into communication with the high-pressure area by moving its opening into a position opposite the inlet opening of the high-pressure line, at the same time separating the first chamber from the high-pressure area. Then the first chamber can be filled again in the unpressurized state.
- the first opening of the chambers in each case forms an outlet opening and the chambers each have an inlet opening in addition to the outlet opening.
- the chambers are not filled and emptied through the same opening, but filled through the inlet opening and emptied through the outlet opening.
- the second chamber can be brought into contact with the inlet opening of the high-pressure line via the outlet opening, ie the first opening of the second chamber, without a pressure loss occurring through the inlet opening of the second chamber to the outside.
- the inlet opening of the second chamber In a second position of the slide, the inlet opening of the second chamber then faces an abrasive agent supply opening.
- the inlet opening of the first chamber is in the second position of the slide of a closed wall opposite. Ie. in this state, the first chamber is emptied through the outlet opening, while optionally the second chamber can be filled with abrasive.
- a Abrasivstoffschö réelle is provided and the inlet openings of the at least two chambers can be brought by movement of the slide alternately into an opposite this Abrasivstoffzubuchö réelle a position.
- the two chambers are alternately filled by the same abrasive supply port by alternately moving the chambers to a position in which the inlet port of the corresponding chamber faces the abrasive fluid supply port so that abrasive may enter the chamber inlet from the abrasive fluid supply port.
- Above or upstream of the abrasive supply port may be provided an abrasive fluid reservoir from which the abrasive preferably exits by gravity through the abrasive supply port.
- the slider may be formed according to a first embodiment as a linearly movable slide, wherein the slider is then moved by means of a suitable linear drive in an oscillating manner between the at least two position.
- the slider is particularly preferably designed as a rotary valve.
- This allows a particularly easy drive, since directly a rotating drive, such as an electric motor can be used.
- the rotary valve has a rotary drive, which causes a continuous drive in one direction of rotation.
- the drive or rotational speed can be adjusted in order to be able to change the change in the rotational speed, the amount of the supplied abrasive per unit time.
- an abrasive supply is provided with an abrasive supply port.
- the high pressure line has an inlet opening and the rotary valve preferably has at least two chambers, of which in a first position of the rotary valve a chamber with an opening, preferably a separate inlet opening of the Abrasivatorizubuchzubuchö réelle and a chamber with an opening of the inlet opening of the high pressure line opposite. Ie. one chamber is filled with abrasive via the abrasive supply port, while the second chamber is simultaneously deflated into the high pressure conduit entrance.
- the filling is therefore preferably in the unpressurized state or with lower pressure than prevails in the high pressure line, while the emptying of the chamber in the high pressure line under pressure, ie when opening the chamber to the high pressure line out, there is a pressure equalization, ie the pressure in the Chamber rises to the level of pressure in the high pressure line. At the same time the chamber remains sealed to the outside, so that there is no pressure loss to the outside.
- the rotary valve can have at least three chambers, of which a third chamber, when the first and the second chamber are opened to the abrasive supply or the high-pressure line, be closed both to the abrasive supply and to the high-pressure line.
- the rotary valve is preferably designed as a rotatable disc, in which the at least one chamber extends as a through hole from a first surface to a second surface opposite to the axis of rotation.
- the surfaces continue to extend Preferably, substantially horizontally, so that the through holes extend substantially from top to bottom.
- the slide is preferably guided between two sealing surfaces extending parallel to the direction of movement of the slide, wherein a first surface of the rotary slide rests against a first sealing surface and a second surface of the slide against an opposing second sealing surface.
- An abrasive supply opening of the abrasive supply is preferably formed in the first sealing surface. Furthermore, an inlet opening of the high-pressure line is preferably formed in the second sealing surface. Depending on the position of the slide, the openings in the sealing surfaces are closed or opened, depending on whether you have an opening the chambers opposite or a closed wall of the surfaces of the slider.
- the at least one inlet opening of the high-pressure line opens into a pressure vessel located in the high-pressure line.
- This pressure vessel is preferably a reservoir for the abrasive, from which the abrasive is flushed out by the high pressure water flow.
- the pressure vessel is filled by the above-described abrasive supply means quasi continuously during operation under pressure. At the same time, however, the pressure vessel forms a certain buffer for abrasive.
- the chambers in the slider or an abrasive supply upstream of the abrasive supply port may be provided with pressurizing means.
- pressurizing means may serve a mechanical means for generating a higher pressure in a closed chamber of the abrasive supply, such as a movable piston.
- a medium under high pressure from the outside can be supplied, for example, also part of the high pressure water flow from the high pressure source to the cutting nozzle.
- the water-abrasive suspension cutting device has, in a known manner, a high-pressure pump 2, which forms a high-pressure source and is connected to a water supply 4. From the high-pressure pump 2, a high-pressure line 6 leads to a cutting or discharge nozzle 8, from which an abrasive-enriched high-pressure water jet 10 for cutting or surface treatment of a workpiece 12 emerges.
- the high-pressure line 6 passes through an abrasive supply means 14 in which abrasive agent 16 is introduced without air supply into the high-pressure region formed by the high-pressure line 6 and pressurized in the high-pressure region with the high-pressure line conveyed Water is mixed so that it exits together with the water jet 10 from the outlet nozzle 8.
- the positioning system for example, a robot or another suitable positioning system.
- the abrasive supply means 14 may be placed separately from the discharge nozzle 8 and connected to the movable discharge nozzle via a movable pipe or a pressure hose.
- the abrasive supply means 14 is based on two in the Fig. 2 and 3 illustrated embodiments explained.
- the abrasive supply device is formed by a lock system formed in a slide.
- the abrasive supply device 14 has a pressure vessel 22, which is located in the high-pressure line 6. Ie. at least one branch of the flow path of the high-pressure line 6 leads through the pressure vessel 22.
- the pressure vessel 22 has an inlet 24 and an outlet 26. Through the inlet 24, the high-pressure water flows into the pressure vessel 22 a. Through the outlet 26, the water flows out with the co-funded abrasive and then flows to the outlet nozzle 8.
- a rotary valve 28 between two sealing plates 30 and 32 is arranged above the pressure vessel 2.
- the rotary valve 28 is rotatable about an axis of rotation X by an electric drive motor 34.
- the sealing plate 30 has a first sealing surface 36, which rests against a first surface of the disk-shaped rotary valve 28.
- the second sealing plate 32 has a second sealing surface 38, which rests against a second opposite surface of the rotary valve 28.
- the surfaces of the rotary valve 28 and the sealing surfaces 36 and 38 extend at right angles to the axis of rotation X.
- chambers 40 are formed in the form of through holes, which extend between the two opposite the sealing surfaces 36 and 38 adjacent surfaces of the rotary valve 28 parallel to the axis of rotation.
- two chambers 40 can be seen in section and another chamber 40 'is indicated by dashed lines. All chambers 40, 40 'are spaced in the same radius from the rotation axis X.
- an abrasive agent supply port 42 is arranged, which is opened to the sealing surface 36 at a position which is the same radius from the rotation axis X as the chambers 40 spaced apart.
- the abrasive supply port 42 is connected to an abrasive supply 44 through which abrasive agent is added.
- the wet supply of the abrasive 46 has the advantage that the abrasive can be introduced into the high-pressure region of the high-pressure line 6 without air.
- the chamber 40 in the rotary valve 28, which in Fig. 2 is shown on the left is in a first position in which the chamber 40 with its inlet opening 48, which forms the upper end of the chamber 40, the abrasive supply opening 42 opposite.
- the outlet opening 50 at the lower end of the chamber 40 is opposite the sealing surface 38 and is closed by this.
- the outlet opening 50 of this chamber at the lower end of the inlet opening 52 of the high pressure line 6 and the high pressure area opposite.
- the inlet opening 52 of the high-pressure region extends through the sealing plate 32 from the sealing surface 38 through into the interior of the pressure vessel 22.
- the abrasive 46 can escape from the chamber 40 by gravity into the pressure vessel 22 to fill the pressure vessel 22.
- the rotary valve 28 is further rotated by the drive motor 34 in the direction of rotation D, so that the left in Fig. 2 shown chamber 40 reaches the right position and is emptied there accordingly.
- the previously right-facing chamber 40 is moved to the left position and filled there as described. This is the operation with two chambers 40.
- rotary valve 28 as well more than two chambers 40, for example, four chambers are arranged, which are preferably distributed uniformly over the circumference of the rotary valve 28.
- Fig. 3 shows a further variant of the abrasive agent supply device according to the invention.
- the rotary valve 28 according to Fig. 3 only one chamber 40. Ie. in this embodiment, simultaneous filling and simultaneous emptying of another chamber 40 is not possible. Instead, one and the same chamber 40 is alternately filled and emptied by placing it once in the in Fig. 3 shown position in which it faces the inlet opening 52 of the pressure vessel 22 and then rotated by 180 ° is brought into a second position in which it faces the Abrasivatorizubuchö réelle 42.
- a storage space 58 is arranged above the sealing plate 30, ie upstream of the abrasive supply opening 42.
- the abrasive agent supply 44 initially takes place in the storage space 58.
- the storage space 58 is connected to a pressurizing means, so that the pressure of the abrasive-water mixture in the storage space 58 can be increased so that the abrasive-water mixture already enters the abrasive supply opening 42 and the chamber 40 under pressure.
- the chamber 40 can be filled faster, on the one hand, on the other hand reduces the pressure difference between the interior of the chamber 40 and the pressure vessel 22.
- the arrangement of this pressurizing means would be according to also in the embodiment according to Fig. 2 possible.
- the pressurizing means in this case consists of a shut-off pressure supply 60. This is connected for example to the high-pressure line 6 and has a shut-off valve 62. At the Abrasivatorizubuch 44 a shut-off valve 64 is also arranged. When the storage space 58 has been filled by opening the shut-off valve 64 with abrasive 46, the shut-off valve 64 may be closed and the shut-off valve 62 opened, thus pressurizing the storage space 58 so that the abrasive water mixture is already pressurized into the chamber 40 of the rotary valve 28 occurs. Before reopening the shut-off valve 64, a pressure relief of the storage space 58 by opening a further shut-off valve 66 to follow. By means of the shut-off valve 66, pressurized water can emerge from the storage space 58 and, for example, can be supplied to the input side of the high-pressure pump 2 again.
- the third embodiment of the invention differs in structure of the abrasive supply means, which dispenses with a movable slide.
- a lock chamber or chamber 70 connects, which has at the lower end of the first inlet opening 52 facing the first opening, which through a first ball valve 72 can be closed.
- a second ball valve 74 is disposed adjacent to an abrasive supply port 42 of an abrasive supply 44. In the in Fig. 4 shown position, the second upper ball valve 74 is closed and the first lower ball valve 72 is opened, so that the chamber 70 is open to the inlet opening 52 and thus to the pressure vessel 22 out.
- the abrasive can escape from the chamber 70 into the pressure vessel 22.
- the ball valve 72 is closed and the ball valve 74 is opened so that abrasive can enter the chamber 70 from the abrasive supply port 42.
- the ball valve 74 is closed and the shut-off valve 62 of a pressure supply 60 can be opened, so that, as shown by Fig. 3 described, the chamber 70 is pressurized.
- the pressure supply 60 may, as shown by Fig. 3 described to be connected to the high-pressure line 6.
- the chamber 70 has a further shut-off valve 66 for pressure relief to the outside.
- shut-off valve 66 can be opened before the ball valve 74 is opened to fill the chamber 70, so that the pressure from the chamber 70 can be reduced.
- the shut-off valve 66 can be connected on the output side to the water supply 4. Also, it is possible via the shut-off valves 62 and 66 to flush the chamber 70 when both shut-off valves 62 and 66 are opened and the ball valves 72 and 74 are both closed.
- the abrasive agent supply 44 above the ball valve 74 is preferably metered.
- the abrasive agent supply 44 has a metering device which is designed so that only such an amount of abrasive agent is supplied into the chamber 70, which chamber 70 can also receive.
- the amount of supplied abrasive is not limited by closing the ball valve 74 but by an upstream metering device. This will ensure that the ball valve 74 when closing is substantially free of abrasive.
- a fill level sensor 68 may be arranged in the pressure vessel 22.
- the level sensor 68 detects the level of abrasive 46 inside the pressure vessel 22. If the level of the abrasive 46 falls below a predetermined level in the pressure vessel 22, abrasive may be supplied by rotation of the rotary valve 28 or by opening and closing of the ball valves 72 and 74 in FIG previously described manner until the level in the interior of the pressure vessel 22 reaches a predetermined maximum again.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
Wasser-Abrasiv-Suspensions-Schneidanlage mit den im Oberbegriff des Anspruchs 1 angegebenen Merkmalen.Water-abrasive suspension cutting system with the features specified in the preamble of claim 1.
Wasser-Abrasiv-Suspensions-Schneidanlagen werden zum Schneiden von Materialien mittels eines Hochdruck-Wasserstrahls, welchem ein Abrasivmittel zugesetzt ist, verwendet. Dabei ist es bei Wasser-Abrasiv-Suspensions-Schneidanlage so, dass das Wasser unter Hochdruck stromaufwärts eine Austrittsdrüse mit dem Abrasivmittel gemischt wird. So kann beispielsweise ein Teil des Wasserstroms durch einen Abrasivmittelbehälter, welcher als Druckbehälter ausgebildet ist, geführt werden. Eine solche Anlage ist z. B. aus
Es ist daher Aufgabe der Erfindung, eine Wasser-Abrasiv-Suspensions-Schneidanlage dahingehend zu verbessern, dass im laufenden Betrieb eine Zufuhr des Abrasivmittels in den Hochdruckbereich der Anlage ohne Luftzufuhr möglich ist.It is therefore an object of the invention to improve a water-abrasive suspension cutting system to the effect that during operation, a supply of the abrasive in the high pressure region of the system without air supply is possible.
Diese Aufgabe wird durch eine Wasser-Abrasiv-Suspensions-Schneidanlage mit den in Anspruch 1 angegebenen Merkmalen gelöst. Bevorzugte Ausführungsformen ergeben sich aus den Unteransprüchen, der nachfolgenden Beschreibung sowie den beigefügten Figuren.This object is achieved by a water-abrasive suspension cutting system having the features specified in claim 1. Preferred embodiments will become apparent from the subclaims, the following description and the accompanying figures.
Die erfindungsgemäße Wasser-Abrasiv-Suspensions-Schneidanlage weist eine Hochdruckquelle, beispielsweise eine Hochdruckpumpe auf, welche Wasser unter hohem Druck bereitstellt. Dabei handelt es sich um einen sehr hohen Druck, vorzugsweise einen Druck bis 2500 bar oder höher. Ferner weist die Anlage eine Austrittsdüse auf, durch welche das unter Druck stehende Wasser gemischt mit Abrasivmittel zum Schneiden austritt. Die Austrittsdüse ist mit der Hochdruckquelle über eine Hochdruckleitung verbunden, wobei eine mit der Hochdruckleitung verbundene Abrasivmittel-Zuführeinrichtung vorhanden ist. D. h. wie bei den Suspensions-Schneidverfahren üblich, erfolgt die Mischung zwischen Wasser und Abrasivmittel im Hochdruckbereich der Anlage. Dazu wird beispielsweise das unter Hochdruck stehende Wasser durch einen Druckbehälter geführt, in welchem sich das Abrasivmittel befindet und in dem Druckbehälter kommt es dann zu einer Mischung zwischen Wasser und Abrasivmittel und das Wasser spült das Abrasivmittel aus dem Hochdruckbehälter heraus und führt es mit bis zu der Austrittsdüse, wo es dann gemeinsam mit dem Abrasivmittel zum Schneiden austritt.The water-abrasive suspension cutting system according to the invention has a high-pressure source, for example a high-pressure pump, which provides water under high pressure. This is a very high pressure, preferably a pressure up to 2500 bar or higher. Furthermore, the system has an outlet nozzle through which the pressurized water mixed with abrasive emerges for cutting. The discharge nozzle is connected to the high pressure source via a high pressure line, with an abrasive supply means connected to the high pressure line being provided. Ie. As usual in the suspension cutting process, the mixture between water and abrasive in the high pressure area of the plant. For this purpose, for example, the high-pressure water is passed through a pressure vessel in which the abrasive is and in the pressure vessel, there is a mixture between water and abrasive and the water flushes the abrasive out of the high pressure vessel and performs it with up to the Outlet nozzle, where it then emerges together with the abrasive for cutting.
Die Abrasivmittel-Zuführeinrichtung dient dazu, im laufenden Betrieb der Anlage, Abrasivmittel in den Hochdruckbereich, d. h. in die Hochdruckleitung einzuführen, ohne die Anlage außer Betrieb nehmen zu müssen und insbesondere ohne den Hochdruckbereich oder einen Teil des Hochdruckbereiches in einen drucklosen Zustand bringen zu müssen. Darüber hinaus erfolgt die Abrasivmittelzufuhr in den Hochdruckbereich so, dass keine Luft in den Hochdruckbereich eingebracht wird.The abrasive supply means serves, during operation of the plant, abrasive in the high pressure area, d. H. to introduce into the high pressure line without having to take the plant out of service and in particular without having to bring the high pressure area or part of the high pressure area in a pressureless state. In addition, the Abrasivmittelzufuhr takes place in the high pressure area so that no air is introduced into the high pressure area.
Erfindungsgemäß weist die Abrasivmittel-Zuführeinrichtung eine Schleuse mit zumindest einer Kammer auf. Die Kammer weist zumindest eine erste verschießbare Öffnung auf. Mittels dieser Öffnung kann die Kammer zu der Hochdruckleitung hin geöffnet und wieder gegenüber der Hochdruckleitung verschlossen werden. Darüber hinaus kann diese erste Öffnung wahlweise zu einer Abrasivmittezufuhr hin geöffnet werden oder es kann eine weitere Öffnung in der Kammer vorgesehen sein, welche zu einer Abrasivmittezufuhr hin geöffnet werden kann. Die Kammer kann mittels der zumindest einen Öffnung oder mehrerer Öffnung somit abwechselnd zu einer Abrasivmittelzufuhr und zu der Hochdruckleitung hin geöffnet werden. So bildet die Kammer eine Schleuse, welche es ermöglicht, das Abrasivmittel bzw. ein Abrasivmittel-Wasser-Gemisch zumindest mit Umgebungsdruck oder einem geringeren Druck als in der Hochdruckleitung herrscht, in die Kammer einzubringen. Anschließend kann die Kammer dann zur Umgebung hin bzw. zur Abrasivmittelzufuhr hin geschlossen werden und zum Hochdruckbereich, d. h. der Hochdruckleitung hin geöffnet werden, sodass dann das Abrasivmittel aus der Kammer in die Hochdruckleitung eintreten kann, ohne dass es zu einem wesentlichen Druckverlust in der Hochdruckleitung kommt. Gegebenenfalls kann vor dem Öffnen der zumindest einen ersten Öffnung zu der Hochdruckleitung hin der Druck in der Kammer erhöht werden, um einen Druckausgleich der Hochdruckleitung vor dem Öffnen der Öffnung herzustellen.According to the invention, the abrasive agent supply device has a lock with at least one chamber. The chamber has at least a first fireable opening. By means of this opening, the chamber can be opened to the high-pressure line and closed again with respect to the high-pressure line. In addition, this first Opening optionally be opened to a Abrasivmittezufuhr out or it may be provided a further opening in the chamber, which can be opened to a Abrasivmittezufuhr out. The chamber can thus be opened alternately by means of the at least one opening or a plurality of openings to an abrasive agent supply and to the high-pressure line. Thus, the chamber forms a lock, which makes it possible to introduce the abrasive or an abrasive-water mixture at least with ambient pressure or a lower pressure than in the high-pressure line to introduce into the chamber. Subsequently, the chamber can then be closed to the environment or to Abrasivmittelzufuhr out and the high pressure area, ie the high pressure line to be opened so that then the abrasive from the chamber can enter the high pressure line, without causing a significant pressure drop in the high pressure line , Optionally, prior to opening the at least one first opening to the high pressure line, the pressure in the chamber may be increased to establish pressure equalization of the high pressure line prior to opening the opening.
Besonders bevorzugt weist die Kammer zwei Öffnungen auf, welche durch Ventile, beispielsweise Kugelhähne verschlossen werden können. Eine erste Öffnung grenzt an die Hochdruckleitung an, eine zweite Öffnung der Kammer ist der Abrasivmittelzufuhr zugewandt. Durch Öffnen und Schließen der Öffnungen mittels geeigneter Ventile kann die Kammer so abwechselnd zur Abrasivmittelzufuhr oder zur Hochdruckleitung hin geöffnet werden. Durch die Anordnung mehrerer solcher Kammern, welche abwechselnd zur Hochdruckleitung hin geöffnet werden, kann eine quasi kontinuierliche Abrasivmittelzufuhr in die Hochdruckleitung hinein erreicht werden.Particularly preferably, the chamber has two openings, which can be closed by valves, such as ball valves. A first opening adjacent to the high pressure line, a second opening of the chamber faces the abrasive supply. By opening and closing the openings by means of suitable valves, the chamber can be opened so alternately to Abrasivmittelzufuhr or to the high-pressure line. By arranging a plurality of such chambers, which are alternately opened to the high pressure line, a quasi-continuous Abrasivmittelzufuhr can be achieved in the high pressure line inside.
Besonder bevorzugt weist die Abrasivmittel-Zuführeinrichtung einen beweglichen Schieber auf, in welchem die zumindest eine Kammer ausgebildet ist. Der Schieber ist zwischen zumindest zwei verschiedenen Positionen bewegbar. Dazu bewegt er sich vorzugsweise in einer geeigneten Führung. Die zumindest eine in dem Schieber ausgebildete Kammer weist die zumindest eine erste Öffnung auf, welche dazu dient, dass Abrasivmittel, welches zuvor in der Kammer aufgenommen worden ist, in den Hochdruckbereich bzw. die Hochdruckleitung hinein austreten kann, wenn die Öffnung der Kammer in eine Position bewegt wird, in welcher sie einer Öffnung, d. h. einer Eintrittsöffnung der Hochdruckleitung gegenüberliegt.Particularly preferably, the abrasive-feeding device has a movable slide, in which the at least one chamber is trained. The slider is movable between at least two different positions. For this purpose, he preferably moves in a suitable leadership. The at least one chamber formed in the slide has the at least one first opening, which serves to allow abrasive material, which has previously been received in the chamber, to escape into the high-pressure region or the high-pressure line when the opening of the chamber is in one Position is moved, in which it faces an opening, that is, an inlet opening of the high-pressure line.
Die Öffnung kann auch dazu dienen, die Kammer mit Abrasivmittel zu befüllen. Bevorzugt ist dazu jedoch eine zweite Öffnung, d. h. eine Eintrittsöffnung vorgesehen, wie weiter unten beschrieben wird.The opening can also serve to fill the chamber with abrasive. However, this is preferably a second opening, d. H. an inlet opening is provided, as will be described below.
Von den zumindest zwei Positionen, zwischen denen der Schieber bewegbar ist, ist die erste Position eine Position, in welcher die erste Öffnung der Kammer einer Eintrittsöffnung der Hochdruckleitung, d. h. des Hochdruckbereiches gegenüberliegt. In dieser Position kann, wie beschrieben, Abrasivmittel aus der Kammer in den Hochdruckbereich austreten. In dieser Position ist die Kammer im Übrigen nach außen abgedichtet, sodass kein Druckverlust aus dem Hochdruckbereich heraus auftritt und auf diese Weise aus der Kammer der Hochdruckbereich im laufenden Betrieb, ohne den Druck im Hochdruckbereich abbauen zu müssen, befüllt werden kann. In der zweiten Position des Schiebers ist die erste Öffnung der Kammer entweder einer geschlossenen Wand gegenüberliegend oder einer Abrasivmittelzufuhröffnung gegenüberliegend angeordnet. Wenn die erste Öffnung einer Abrasivmittelzufuhröffnung gegenüberliegt, kann die Kammer durch die Abrasivmittelzufuhröffnung, welche die Austrittsöffnung einer Abrasivmittelzufuhr darstellt, mit Abrasivmittel befüllt werden. Wenn in der zweiten Position die erste Öffnung einer geschlossenen Wand gegenüberliegt und somit verschlossen ist, erfolgt die Befüllung der Kammer mit Abrasivmittel vorzugsweise durch die vorangehend genannte zweite Öffnung, d. h. durch eine separate Eintrittsöffnung, welche in der ersten Position des Schiebers geschlossen ist, beispielsweise indem sie einer geschlossenen Wandung gegenüberliegt.Of the at least two positions between which the slide is movable, the first position is a position in which the first opening of the chamber is opposite to an inlet opening of the high-pressure line, ie the high-pressure area. In this position, as described, abrasive can escape from the chamber in the high pressure area. In this position, the chamber is otherwise sealed to the outside, so that no pressure loss from the high pressure area occurs and in this way from the chamber of the high pressure area during operation, without having to reduce the pressure in the high pressure area, can be filled. In the second position of the spool, the first opening of the chamber is located either opposite a closed wall or opposite an abrasive supply port. When the first opening faces an abrasive supply port, the chamber may be filled with abrasive by the abrasive supply port, which is the exit port of an abrasive supply. If in the second position, the first opening of a closed wall opposite and thus closed, the filling of the chamber is preferably carried out with abrasive by the aforesaid second opening, ie by a separate inlet opening, which is closed in the first position of the slide, for example by facing a closed wall.
Erfindungsgemäß wird somit die Kammer des Schiebers durch Bewegung des Schiebers von einer Befüllposition, d. h. der zweiten Position, in eine Entleerungsposition, d. h. die erste Position, bewegt. Dadurch wird erreicht, dass die Kammer außerhalb des Hochdruckbereiches mit Abrasivmittel befüllt werden kann, wobei das Befüllen, ebenfalls unter Druck oder drucklos geschehen kann. Vorzugsweise wird die Kammer mit losem Abrasivmittel, welches mit Wasser gemischt ist, gefüllt, sodass das Abrasivmittel luftfrei in die Kammer eingebracht wird. Beim Befüllen ist der Hochdruckbereich geschlossen, indem vorzugsweise eine Wandung des Schiebers der Eintrittsöffnung der Hochdruckleitung dichtend gegenüberliegt. Erst wenn die Kammer in die Entleerungsposition gebracht wird, in welcher ihre erste Öffnung der Eintrittsöffnung gegenüberliegt, wird dadurch der Hochdruckbereich zu der Kammer des Schiebers hin geöffnet, sodass das Abrasivmittel aus der Kammer in den Hochdruckbereich eintreten kann, ohne dass jedoch der Hochdruckbereich über die Kammer hinaus nach außen geöffnet werden muss. Das Abrasivmittel wird vorzugsweise durch Schwerkraft aus der Kammer in die Hochdruckleitung hinein entleert.Thus, according to the invention, the chamber of the slider is moved by movement of the slider from a filling position, i. H. the second position, in a discharge position, d. H. the first position, moved. This ensures that the chamber outside the high pressure area can be filled with abrasive, the filling can also be done under pressure or without pressure. Preferably, the chamber is filled with loose abrasive, which is mixed with water, so that the abrasive is introduced into the chamber without air. When filling the high pressure area is closed by preferably a wall of the slide of the inlet opening of the high-pressure line sealingly opposite. Only when the chamber is brought into the emptying position, in which its first opening facing the inlet opening, thereby, the high-pressure region is opened to the chamber of the slider, so that the abrasive can enter from the chamber in the high-pressure region, but without the high-pressure region over the Chamber must be opened to the outside. The abrasive is preferably evacuated by gravity from the chamber into the high pressure line.
Gemäß einer bevorzugten Ausführungsform der Erfindung weist der bewegliche Schieber zumindest zwei darin ausgebildete Kammern auf, welche jeweils zumindest eine erste Öffnung aufweisen.According to a preferred embodiment of the invention, the movable slide has at least two chambers formed therein, which each have at least one first opening.
Der Schieber, in welchem die zumindest zwei Kammern ausgebildet sind, ist zwischen zumindest zwei Positionen bewegbar. Durch diese Bewegung des Schiebers werden die erste Öffnungen der Kammern abwechselnd mit einer Eintrittsöffnung der Hochdruckleitung bzw. des Hochdruckbereiches zur Deckung gebracht, sodass die abwechselnd in den Hochdruckbereich hinein entleert werden können. Dazu ist in einer ersten Position des Schiebers die Öffnung einer ersten Kammer eine Eintrittsöffnung der Hochdruckleitung gegenüberliegend positioniert, während die Öffnung einer zweiten Kammer einer geschlossenen Wand oder einer Abrasivmittelzufuhröffnung gegenüberliegt. Wenn die Öffnung der zweiten Kammer einer Abrasivmittelzufuhröffnung gegenüber liegt, kann durch diese die Kammer wieder mit Abrasivmittel befüllt werden. Gleichzeitig wird die erste Kammer, welche zuvor mit Abrasivmittel befüllt wurde, in den Hochdruckbereich bzw. die Hochdruckleitung hinein entleert. Dabei ist die erste Kammer nach außen geschlossen, sodass die Hochdruckleitung bzw. der Hochdruckbereich außen abgedichtet bleibt. Die zweite Kammer kann gleichzeitig befüllt werden. Dies kann entweder durch dieselbe Öffnung geschehen oder durch eine zweite Öffnung, d. h. eine separate Eintrittsöffnung, wobei dann die erste Öffnung, wie beschrieben, einer geschlossenen Wand gegenüberliegen kann, um in dieser Position geschlossen zu sein. Für den Fall, dass mehr als zwei Positionen bzw. Schaltstellungen des Schiebers vorgesehen sind, ist es auch denkbar, dass eine Kammer in einer Position vollständig geschlossen ist, d. h. weder entleert noch befüllt wird. In zumindest einer zweiten Position des Schiebers ist dann die Öffnung der zweiten Kammer einer Eintrittsöffnung der Hochdruckleitung gegenüberliegend positioniert, während die Öffnung der ersten Kammer einer geschlossenen Wand oder einer Abrasivmittelzufuhröffnung gegenüberliegt. D. h. in dieser Position kann dann die zweite Kammer in den Hochdruckbereich entleert werden, während die erste Kammer gleichzeitig gefüllt werden kann oder in dem Fall, dass mehr als zwei Kammern vorgesehen sein sollten, sich in einer Zwischenposition befindet, in der sie weder befüllt noch entleert wird. Durch die Anordnung von mit zumindest zwei voneinander getrennten Kammern ist es möglich, eine Kammer im drucklosen Zustand zu befüllen, während die andere Kammer gleichzeitig zum Hochdruckbereich hin geöffnet und entleert wird. Auf diese Weise ist es durch abwechselndes Füllen und Leeren von zumindest zwei Kammern möglich, den Hochdruckbereich im laufenden Betrieb quasi kontinuierlich mit Abrasivmittel zu befüllen. Die beiden Kammern bilden somit Schleusen, welche abwechselnd befüllt und entleert werden.The slide, in which the at least two chambers are formed, is movable between at least two positions. By this movement of the slide, the first openings of the chambers are alternately connected to an inlet opening of the high pressure line or the High pressure range brought to cover, so that can be alternately emptied into the high pressure area. For this purpose, in a first position of the slide, the opening of a first chamber is positioned opposite an inlet opening of the high-pressure line, while the opening of a second chamber is opposite to a closed wall or an abrasive medium-feeding opening. If the opening of the second chamber is opposite to an abrasive supply opening, it can be used to refill the chamber with abrasive. At the same time, the first chamber, which was previously filled with abrasive, is emptied into the high-pressure area or the high-pressure line. In this case, the first chamber is closed to the outside, so that the high pressure line or the high pressure area remains sealed outside. The second chamber can be filled at the same time. This can be done either through the same opening or through a second opening, ie a separate inlet opening, in which case the first opening, as described, may be opposite a closed wall to be closed in this position. In the event that more than two positions or switching positions of the slider are provided, it is also conceivable that a chamber is completely closed in one position, that is neither emptied nor filled. In at least a second position of the slide, the opening of the second chamber is then positioned opposite an inlet opening of the high-pressure line, while the opening of the first chamber is opposite to a closed wall or an abrasive-medium feed opening. Ie. in this position, the second chamber can then be emptied into the high-pressure area, while the first chamber can be filled at the same time or, in the event that more than two chambers should be provided, is in an intermediate position in which it is neither filled nor emptied , The arrangement of at least two separate chambers, it is possible to fill a chamber in the unpressurized state, while the other chamber simultaneously opened and emptied to the high pressure area becomes. In this way it is possible by alternately filling and emptying of at least two chambers to fill the high-pressure area during operation quasi-continuously with abrasive. The two chambers thus form locks, which are alternately filled and emptied.
Vorzugsweise weist die Hochdruckleitung eine Eintrittsöffnung auf und die Öffnungen der zumindest zwei Kammern sind durch Bewegung des Schiebers abwechselnd in eine dieser einen Eintrittsöffnung gegenüberliegende Position bringbar. Der Schieber ist dabei vorzugsweise so ausgebildet, dass er, wenn der Eintrittsöffnung der Hochdruckleitung keine Öffnung einer Kammer gegenüberliegt, die Eintrittsöffnung der Hochdruckleitung durch eine Wandung des Schiebers verschlossen ist, sodass der Hochdruckbereich nach außen dicht bleibt. Wenn eine Öffnung einer Kammer der Eintrittsöffnung gegenüberliegt, wird eine Verbindung von der Eintrittsöffnung zu der Kammer hergestellt, sodass das Abrasivmittel aus der Kammer in den Hochdruckbereich eintreten kann. Dies erfolgt vorzugsweise durch Schwerkraft, d. h. die Öffnung der Kammer ist an deren Unterseite angeordnet. Gleichzeitig ist eine zweite Kammer von der Eintrittsöffnung der Hochdruckleitung entfernt, sodass diese zweite Kammer nicht mit dem Hochdruckbereich in Verbindung steht und somit im drucklosen Zustand gleichzeitig mit Abrasivmittel gefüllt werden kann. Mit Bewegung des Schiebers kann dann die zweite Kammer in Verbindung mit dem Hochdruckbereich gebracht werden, indem deren Öffnung in eine der Eintrittsöffnung der Hochdruckleitung gegenüberliegende Lage bewegt wird, wobei gleichzeitig die erste Kammer von dem Hochdruckbereich getrennt wird. Dann kann die erste Kammer wieder im drucklosen Zustand befüllt werden.The high-pressure line preferably has an inlet opening and the openings of the at least two chambers can be brought alternately into a position opposite this one inlet opening by movement of the slide. The slide is preferably designed so that, when the inlet opening of the high-pressure line is not opposite an opening of a chamber, the inlet opening of the high-pressure line is closed by a wall of the slide, so that the high pressure area remains sealed to the outside. When an opening of a chamber is opposite the entrance opening, communication is established from the entrance opening to the chamber so that the abrasive agent can enter the high pressure area from the chamber. This is preferably done by gravity, d. H. the opening of the chamber is arranged on the underside thereof. At the same time, a second chamber is removed from the inlet opening of the high-pressure line, so that this second chamber is not connected to the high-pressure area and can thus be filled simultaneously with abrasive in the unpressurized state. With movement of the slider, the second chamber can then be brought into communication with the high-pressure area by moving its opening into a position opposite the inlet opening of the high-pressure line, at the same time separating the first chamber from the high-pressure area. Then the first chamber can be filled again in the unpressurized state.
Besonders bevorzugt bildet die erste Öffnung der Kammern jeweils eine Austrittsöffnung und die Kammern weisen neben der Austrittsöffnung jeweils eine Eintrittsöffnung auf. D. h. bei dieser Ausgestaltung werden die Kammern nicht durch dieselbe Öffnung befüllt und entleert, sondern durch die Eintrittsöffnung befüllt und durch die Austrittsöffnung entleert. In einer ersten Position des Schiebers liegt die Eintrittsöffnung einer ersten Kammer dazu eine Abrasivmittelzufuhröffnung eine Abrasivmittelzufuhr gegenüber, sodass durch diese Abrasivmittelzufuhröffnung Abrasivmittel in die Eintrittsöffnung der ersten Kammer zu deren Befüllung eintreten kann. Gleichzeitig liegt, wenn zwei oder mehr Kammern in dem Schieber ausgebildet sind, die Eintrittsöffnung einer zweiten Kammer einer geschlossenen Wand gegenüber, sodass die Eintrittsöffnung der zweiten Kammer geschlossen ist. So kann die zweite Kammer mit der Eintrittsöffnung der Hochdruckleitung über die Austrittsöffnung, d. h. die erste Öffnung der zweiten Kammer in Kontakt gebracht werden, ohne dass durch die Eintrittsöffnung der zweiten Kammer ein Druckverlust nach außen auftreten kann. In einer zweiten Position des Schiebers liegt dann die Eintrittsöffnung der zweiten Kammer einer Abrasivmittelzufuhröffnung gegenüber. Die Eintrittsöffnung der ersten Kammer liegt in der zweiten Position des Schiebers einer geschlossenen Wand gegenüber. D. h. in diesem Zustand wird die erste Kammer über deren Austrittsöffnung geleert, während gegebenenfalls die zweite Kammer mit Abrasivmittel gefüllt werden kann.Particularly preferably, the first opening of the chambers in each case forms an outlet opening and the chambers each have an inlet opening in addition to the outlet opening. Ie. in this embodiment the chambers are not filled and emptied through the same opening, but filled through the inlet opening and emptied through the outlet opening. In a first position of the slider, the inlet opening of a first chamber to an abrasive fluid supply opening facing an abrasive supply, so that can enter through this Abrasivmittelzufuhröffnung abrasive into the inlet opening of the first chamber to the filling. At the same time, when two or more chambers are formed in the slider, the inlet opening of a second chamber faces a closed wall, so that the inlet opening of the second chamber is closed. Thus, the second chamber can be brought into contact with the inlet opening of the high-pressure line via the outlet opening, ie the first opening of the second chamber, without a pressure loss occurring through the inlet opening of the second chamber to the outside. In a second position of the slide, the inlet opening of the second chamber then faces an abrasive agent supply opening. The inlet opening of the first chamber is in the second position of the slide of a closed wall opposite. Ie. in this state, the first chamber is emptied through the outlet opening, while optionally the second chamber can be filled with abrasive.
Vorzugsweise ist eine Abrasivmittelzufuhröffnung vorgesehen und die Eintrittsöffnungen der zumindest zwei Kammern sind durch Bewegung des Schiebers abwechselnd in eine diese eine Abrasivmittelzufuhröffnung gegenüberliegenden Lage bringbar. D. h. die beiden Kammern werden abwechselnd durch dieselbe Abrasivmittelzufuhröffnung befüllt, indem die Kammern abwechselnd in eine Position bewegt werden, in welcher die Eintrittsöffnung der entsprechenden Kammer der Abrasivmittelzufuhröffnung gegenüberliegt, sodass aus der Abrasivmittelzufuhröffnung Abrasivmittel in die Eintrittsöffnung der Kammer eintreten kann. Oberhalb bzw. stromaufwärtig der Abrasivmittelzufuhröffnung kann ein Abrasivmittelvorratsbehälter vorgesehen sein, aus welchem das Abrasivmittel vorzugsweise durch Schwerkraft durch die Abrasivmittelzufuhröffnung austritt. Wenn keine Eintrittsöffnung einer Kammer der Abrasivmittelzufuhröffnung gegenüberliegt, wird diese vorzugsweise durch eine Wand der Schiebers verschlossen, sodass kein Abrasivmittel austreten kann. Es ist jedoch auch möglich, mehrere Abrasivmittelzufuhröffnungen vorzusehen, sodass entweder für jede Kammer eine Abrasivmittelzufuhröffnung vorgesehen ist, wobei jede Kammer durch Bewegung des Schiebers in einer ersten Position in Verbindung mit der Abrasivmittelzufuhröffnung bringbar ist und in einer zweiten Position in Verbindung mit einer Eintrittsöffnung der Hochdruckleitung bringbar ist, wobei in der zweiten Position die Kammer dann nicht mit der Abrasivmittelzufuhröffnung in Verbindung steht. Alternativ ist es auch denkbar, über mehrere Abrasivmittelzufuhröffnungen mehrere Kammern gleichzeitig zu befüllen, für den Fall, dass mehr als zwei Kammern in dem Schieber vorgesehen sein sollten.Preferably, a Abrasivmittelmittelöffnung is provided and the inlet openings of the at least two chambers can be brought by movement of the slide alternately into an opposite this Abrasivmittelzufuhröffnung a position. Ie. the two chambers are alternately filled by the same abrasive supply port by alternately moving the chambers to a position in which the inlet port of the corresponding chamber faces the abrasive fluid supply port so that abrasive may enter the chamber inlet from the abrasive fluid supply port. Above or upstream of the abrasive supply port may be provided an abrasive fluid reservoir from which the abrasive preferably exits by gravity through the abrasive supply port. If no inlet opening of a chamber of the Abrasivmittelzufuhröffnung opposite, this is preferably closed by a wall of the slider, so that no abrasive can escape. However, it is also possible to provide a plurality of abrasive supply ports so that either one abrasive supply port is provided for each chamber, each chamber being movable by movement of the spool in a first position in communication with the abrasive supply port and in a second position in communication with an inlet port of the high pressure line can be brought, wherein in the second position, the chamber is then not in communication with the Abrasivmittelzufuhröffnung. Alternatively, it is also conceivable to fill a plurality of chambers simultaneously via a plurality of abrasive agent supply openings, in the event that more than two chambers should be provided in the slide.
Der Schieber kann gemäß einer ersten Ausführungsform als linearbeweglicher Schieber ausgebildet sein, wobei der Schieber dann mittels eines geeigneten Linearantriebs in oszillierender Weise zwischen den zumindest zwei Position bewegt wird.The slider may be formed according to a first embodiment as a linearly movable slide, wherein the slider is then moved by means of a suitable linear drive in an oscillating manner between the at least two position.
Besonders bevorzugt ist der Schieber jedoch als Drehschieber ausgebildet. Dies ermöglicht einen besonders leichten Antrieb, da direkt ein rotierender Antrieb, wie ein Elektromotor Verwendung finden kann. Darüber hinaus ist nicht erforderlich, die Bewegungsrichtung umzukehren, vielmehr ist es bevorzugt, dass der Drehschieber einen Drehantrieb aufweist, welcher einen kontinuierlichen Antrieb in eine Drehrichtung bewirkt. Dabei kann die Antriebs- bzw. Drehgeschwindigkeit einstellbar sein, um über Veränderung der Drehgeschwindigkeit, die Menge des zugeführten Abrasivmittels pro Zeiteinheit verändern zu können. Bevorzugt ist eine Abrasivmittelzufuhr mit einer Abrasivmittelzufuhröffnung vorgesehen. Die Hochdruckleitung weist eine Eintrittsöffnung auf und der Drehschieber bevorzugt zumindest zwei Kammern, von denen in einer ersten Position des Drehschiebers eine Kammer mit einer Öffnung, vorzugsweise einer separaten Eintrittsöffnung der Abrasivmittelzufuhröffnung und eine Kammer mit einer Öffnung der Eintrittsöffnung der Hochdruckleitung gegenüberliegt. D. h. eine Kammer wird über die Abrasivmittelzufuhröffnung mit Abrasivmittel gefüllt, während die zweite Kammer gleichzeitig in die Eintrittsöffnung der Hochdruckleitung hinein entleert wird. Das Befüllen erfolgt daher vorzugsweise im drucklosen Zustand oder mit geringerem Druck als in der Hochdruckleitung herrscht, während das Entleeren der Kammer in die Hochdruckleitung unter Druck geschieht, d. h. beim Öffnen der Kammer zur Hochdruckleitung hin, kommt es zu einem Druckausgleich, d. h. der Druck in der Kammer steigt auf das Niveau des Drucks in der Hochdruckleitung an. Gleichzeitig bleibt die Kammer nach außen abgedichtet, sodass es zu keinem Druckverlust nach außen kommt.However, the slider is particularly preferably designed as a rotary valve. This allows a particularly easy drive, since directly a rotating drive, such as an electric motor can be used. In addition, it is not necessary to reverse the direction of movement, but rather it is preferred that the rotary valve has a rotary drive, which causes a continuous drive in one direction of rotation. In this case, the drive or rotational speed can be adjusted in order to be able to change the change in the rotational speed, the amount of the supplied abrasive per unit time. Preferably, an abrasive supply is provided with an abrasive supply port. The high pressure line has an inlet opening and the rotary valve preferably has at least two chambers, of which in a first position of the rotary valve a chamber with an opening, preferably a separate inlet opening of the Abrasivmittelzufuhröffnung and a chamber with an opening of the inlet opening of the high pressure line opposite. Ie. one chamber is filled with abrasive via the abrasive supply port, while the second chamber is simultaneously deflated into the high pressure conduit entrance. The filling is therefore preferably in the unpressurized state or with lower pressure than prevails in the high pressure line, while the emptying of the chamber in the high pressure line under pressure, ie when opening the chamber to the high pressure line out, there is a pressure equalization, ie the pressure in the Chamber rises to the level of pressure in the high pressure line. At the same time the chamber remains sealed to the outside, so that there is no pressure loss to the outside.
Gemäß einer besonderen Ausführungsform kann der Drehschieber zumindest drei Kammern aufweisen, von denen eine dritte Kammer, wenn die erste und die zweite Kammer zu der Abrasivmittelzufuhr oder der Hochdruckleitung hin geöffnet sind, sowohl zu der Abrasivmittelzufuhr als auch zu der Hochdruckleitung hin geschlossen sein. Durch die Anordnung von mehr als zwei Kammern kann der Drehwinkel zum Weiterbewegen der Kammern von einer Position zur nächsten verkleinert werden, sodass insgesamt bei gleicher Drehgeschwindigkeit die Menge des zugeführten Abrasivmittels gesteigert werden kann.According to a particular embodiment, the rotary valve can have at least three chambers, of which a third chamber, when the first and the second chamber are opened to the abrasive supply or the high-pressure line, be closed both to the abrasive supply and to the high-pressure line. By arranging more than two chambers, the angle of rotation for moving the chambers further from one position to the next can be reduced, so that overall the quantity of abrasive supplied can be increased at the same rotational speed.
Der Drehschieber ist bevorzugt als drehbare Scheibe ausgebildet, in welcher sich die zumindest eine Kammer als Durchgangsloch von einer ersten Oberfläche zu einer in Richtung der Drehachse entgegengesetzten zweiten Oberfläche erstreckt. Die Oberflächen erstrecken sich weiter bevorzugt im Wesentlichen horizontal, sodass sich die Durchgangslöcher im Wesentlichen von oben nach unten erstrecken. Dies hat den Vorteil, dass die so gebildeten Kammern durch Wirkung der Schwerkraft von oben mit Abrasivmittel gefüllt werden können und dass das Abrasivmittel ebenfalls durch Wirkung der Schwerkraft nach unten wieder aus der Kammer austreten kann. D. h. die obere Öffnung des Durchgangsloches bildet eine Eintrittsöffnung, während das untere Ende eine Austrittsöffnung bildet. Besonders bevorzugt erstrecken sich die Durchgangslöcher parallel zur Drehachse des Drehschiebers.The rotary valve is preferably designed as a rotatable disc, in which the at least one chamber extends as a through hole from a first surface to a second surface opposite to the axis of rotation. The surfaces continue to extend Preferably, substantially horizontally, so that the through holes extend substantially from top to bottom. This has the advantage that the chambers thus formed can be filled by the action of gravity from above with abrasive and that the abrasive can also escape through the action of gravity down again from the chamber. Ie. the upper opening of the through hole forms an inlet opening, while the lower end forms an outlet opening. Particularly preferably, the through holes extend parallel to the axis of rotation of the rotary valve.
Der Schieber ist vorzugsweise zwischen zwei sich parallel zur Bewegungsrichtung des Schiebers erstreckenden Dichtflächen geführt, wobei eine erste Oberfläche des Drehschiebers an einer ersten Dichtfläche und eine zweite Oberfläche des Schiebers an einer gegenüberliegenden zweiten Dichtfläche anliegt. So wird erreicht, dass die Oberfläche des Schiebers Öffnungen in den Dichtflächen verschließen kann und gleichzeitig die Dichtflächen Öffnungen in dem Schieber verschließen kann, je nach Position des Schiebers. Auf diese Weise können die Öffnungen der Kammern geöffnet und geschlossen werden, je nachdem in welcher Position sie sich befinden, ob sie einer Öffnung in der Dichtfläche, d. h. der Eintrittsöffnung oder der Abrasivmittelzufuhröffnung gegenüberliegen oder der geschlossenen Wand der Dichtfläche gegenüberliegen. Im Falle, dass der Schieber ein Drehschieber ist, erstrecken sich die Dichtflächen normal zu der Drehachse des Drehschiebers.The slide is preferably guided between two sealing surfaces extending parallel to the direction of movement of the slide, wherein a first surface of the rotary slide rests against a first sealing surface and a second surface of the slide against an opposing second sealing surface. This ensures that the surface of the slide can close openings in the sealing surfaces and at the same time the sealing surfaces can close openings in the slide, depending on the position of the slider. In this way, the openings of the chambers can be opened and closed, depending on which position they are in, whether they are an opening in the sealing surface, d. H. the inlet opening or the Abrasivmittelzufuhröffnung opposite or the opposite wall of the sealing surface. In the case that the slider is a rotary valve, the sealing surfaces extend normal to the axis of rotation of the rotary valve.
Eine Abrasivmittelzufuhröffnung der Abrasivmittelzufuhr ist vorzugsweise in der ersten Dichtfläche ausgebildet. Ferner ist vorzugsweise eine Eintrittsöffnung der Hochdruckleitung in der zweiten Dichtfläche ausgebildet. Je nach Stellung des Schiebers werden die Öffnungen in den Dichtflächen geschlossen oder geöffnet, je nachdem ob Sie einer Öffnung der Kammern gegenüberliegen oder einer geschlossenen Wand der Oberflächen des Schiebers.An abrasive supply opening of the abrasive supply is preferably formed in the first sealing surface. Furthermore, an inlet opening of the high-pressure line is preferably formed in the second sealing surface. Depending on the position of the slide, the openings in the sealing surfaces are closed or opened, depending on whether you have an opening the chambers opposite or a closed wall of the surfaces of the slider.
Besondern bevorzugt mündet die zumindest eine Eintrittsöffnung der Hochdruckleitung in einen in der Hochdruckleitung gelegenen Druckbehälter. Dieser Druckbehälter stellt vorzugsweise ein Reservoir für das Abrasivmittel dar, aus welchem das Abrasivmittel durch den Hochdruckwasserstrom herausgespült wird. Der Druckbehälter wird durch die oben beschriebene Abrasivmittel-Zuführeinrichtung quasi kontinuierlich im laufenden Betrieb unter Druck befüllt. Gleichzeitig bildet der Druckbehälter jedoch einen gewissen Pufferspeicher für Abrasivmittel.Particularly preferably, the at least one inlet opening of the high-pressure line opens into a pressure vessel located in the high-pressure line. This pressure vessel is preferably a reservoir for the abrasive, from which the abrasive is flushed out by the high pressure water flow. The pressure vessel is filled by the above-described abrasive supply means quasi continuously during operation under pressure. At the same time, however, the pressure vessel forms a certain buffer for abrasive.
Gemäß einer besonderen Ausführungsform der Erfindung können die Kammern in dem Schieber oder eine Abrasivmittelzufuhr stromaufwärts der Abrasivmittelzufuhröffnung mit Druckbeaufschlagungsmitteln versehen sein. Dies ermöglicht es, das Abrasivmittel bereits unter Druck in die Kammer des Schiebers einzufüllen. So kann die Druckdifferenz zwischen dem Innenraum der Kammer und der Hochdruckleitung verringert werden, was die Abdichtung vereinfacht und den Befüllvorgang beschleunigen kann. Als Druckbeaufschlagungsmittel kann eine mechanische Einrichtung zum Erzeugen eines höheren Druckes in einer abgeschlossenen Kammer der Abrasivmittelzuführung dienen, beispielsweise ein beweglicher Kolben. Alternativ oder zusätzlich kann ein Medium unter hohem Druck von außen zugeführt werden, beispielsweise auch Teil des Hochdruckwasserstromes von der Hochdruckquelle zur Schneiddüse.According to a particular embodiment of the invention, the chambers in the slider or an abrasive supply upstream of the abrasive supply port may be provided with pressurizing means. This makes it possible to fill the abrasive already under pressure in the chamber of the slide. Thus, the pressure difference between the interior of the chamber and the high-pressure line can be reduced, which simplifies the sealing and can accelerate the filling process. As a pressurizing means may serve a mechanical means for generating a higher pressure in a closed chamber of the abrasive supply, such as a movable piston. Alternatively or additionally, a medium under high pressure from the outside can be supplied, for example, also part of the high pressure water flow from the high pressure source to the cutting nozzle.
Nachfolgend wird die Erfindung beispielhaft anhand der beigefügten Figuren beschrieben. In diesen zeigt:
- Fig. 1
- schematisch eine Wasser-Abrasiv-Suspensions-Schneidanlage gemäß der Erfindung,
- Fig. 2
- eine Schnittansicht einer Abrasivmittel-Zuführeinrichtung gemäß einer ersten Ausführungsform,
- Fig.3
- eine Schnittansicht einer Abrasivmittel-Zuführeinrichtung gemäß einer zweiten Ausführungsform, und
- Fig. 4
- schematisch eine Abrasivmittel-Zuführeinrichtung gemäß einer dritten Ausführungsform.
- Fig. 1
- schematically a water abrasive suspension cutting system according to the invention,
- Fig. 2
- a sectional view of an abrasive supply means according to a first embodiment,
- Figure 3
- a sectional view of an abrasive supply means according to a second embodiment, and
- Fig. 4
- schematically an abrasive supply means according to a third embodiment.
Die erfindungsgemäße Wasser-Abrasiv-Suspensions-Schneidanlage weist in bekannter Weise eine Hochdruckpumpe 2 auf, welche eine Hochdruckquelle bildet und mit einer Wasserzufuhr 4 verbunden ist. Von der Hochdruckpumpe 2 führt eine Hochdruckleitung 6 zu einer Schneid- bzw. Austrittsdüse 8, aus welcher ein mit Abrasivmittel angereicherter Hochdruckwasserstrahl 10 zum Schneiden oder zur Oberflächenbearbeitung eines Werkstückes 12 austritt. Auf dem Weg von der Hochdruckpumpe 2 zu der Austrittsdüse 8 führt die Hochdruckleitung 6 durch eine Abrasivmittel-Zuführeinrichtung 14, in welcher Abrasivmittel 16 ohne Luftzufuhr in den von der Hochdruckleitung 6 gebildeten Hochdruckbereich eingeführt und in dem Hochdruckbereich mit dem in der Hochdruckleitung geförderten unter Druck stehenden Wasser gemischt wird, sodass es gemeinsam mit dem Wasserstrahl 10 aus der Austrittsdüse 8 austritt.The water-abrasive suspension cutting device according to the invention has, in a known manner, a high-
Bei dem hier gezeigten Beispiel ist die Einheit 18, welche im Wesentlichen aus der Abrasivmittel-Zuführeinrichtung 14 und der Austrittsdüse 8 gebildet wird, an einem Positioniersystem 20 angebracht, welches hier schematisch als Koordinatensystem dargestellt ist, mit welchem die Austrittsdüse 8 relativ zu dem Werkstück 12 bewegt werden kann, um einen gewünschten Schnittverlauf bzw. Bearbeitungsverlauf im Werkstück 12 zu erzeugen. Das Positioniersystem kann beispielsweise ein Roboter oder ein anderes geeignetes Positioniersystem sein. Alternativ kann die Abrasivmittel-Zuführeinrichtung 14 jedoch auch getrennt von der Austrittsdüse 8 aufgestellt und mit der bewegbaren Austrittsdüse über eine bewegliche Rohrleitung oder einen Druckschlauch verbunden sein.In the example shown here, the
Die Abrasivmittel-Zuführeinrichtung 14 wird anhand von zwei in den
In dem Drehschieber 28 sind Kammern 40 in Form von Durchgangslöchern ausgebildet, welche sich zwischen den zwei entgegengesetzten die Dichtflächen 36 und 38 angrenzenden Oberflächen des Drehschiebers 28 parallel zur Drehachse erstrecken. In der
Die Kammer 40 in dem Drehschieber 28, welche in
Darüber hinaus ist bei der Ausgestaltung gemäß
Das Druckbeaufschlagungsmittel besteht in diesem Fall aus einer absperrbaren Druckzufuhr 60. Diese ist beispielsweise mit der Hochdruckleitung 6 verbunden und weist ein Absperrventil 62 auf. An der Abrasivmittelzufuhr 44 ist ebenfalls ein Absperrventil 64 angeordneten. Wenn der Speicherraum 58 durch Öffnen des Absperrventils 64 mit Abrasivmittel 46 gefüllt worden ist, kann das Absperrventil 64 geschlossen werden und das Absperrventil 62 geöffnet werden und so der Speicherraum 58 mit Druck beaufschlagt werden, sodass das AbrasivmittelWasser-Gemisch bereits unter Druck in die Kammer 40 des Drehschiebers 28 eintritt. Vor dem erneuten Öffnen des Absperrventiles 64 kann eine Druckentlastung des Speicherraumes 58 durch Öffnen eines weiteren Absperrventils 66 folgen. Durch das Absperrventil 66 kann unter Druck stehendes Wasser aus dem Speicherraum 58 austreten und beispielsweise der Hochdruckpumpe 2 eingangsseitig wieder zugeführt werden.The pressurizing means in this case consists of a shut-off
In der beschrieben Ausführungsform ist die Zufuhr von losem Abrasivmittel 46 beschrieben worden. Es ist jedoch auch denkbar, in die Kammern 40 des Drehschiebers 28 Abrasivmittel in gebundener Form, beispielsweise in Form von Pellets zuzuführen. Auf diese Weise wird verhindert, dass loses Abrasivmittel die Dichtflächen 36 und 38 beschädigt und die Abdichtung des Druckbehälters 22 beeinträchtigt.In the described embodiment, the supply of loose abrasive 46 has been described. However, it is also conceivable to supply in the
Die dritte Ausführungsform der Erfindung, welche in
Die Abrasivmittelzufuhr 44 oberhalb des Kugelhahnes 74 erfolgt vorzugsweise dosiert. D. h. die Abrasivmittelzufuhr 44 weist eine Dosiereinrichtung auf, welche so ausgebildet ist, dass in die Kammer 70 nur eine solche Menge Abrasivmittel zugeführt wird, welche die Kammer 70 auch aufnehmen kann. D. h. die Menge des zugeführten Abrasivmittels wird nicht durch Schließen des Kugelhahnes 74 begrenzt sondern durch eine stromaufwärts angeordnete Dosiereinrichtung. Dadurch wird sichergestellt, dass der Kugelhahn 74 beim Schließen im Wesentlichen frei von Abrasivmittel ist.The
Bei den Ausführungsbeispielen kann in dem Druckbehälter 22 ein Füllstandssensor 68 angeordnet sein. Der Füllstandssensor 68 erfasst den Füllstand mit Abrasivmittel 46 im Inneren des Druckbehälters 22. Fällt das Niveau des Abrasivmittels 46 unter eine vorbestimmte Höhe in dem Druckbehälter 22 kann eine Abrasivmittelzufuhr durch Drehung des Drehschiebers 28 bzw. durch Öffnen und Schließen der Kugelhähne 72 und 74 in der vorangehend beschrieben Weise erfolgen, bis der Füllstand im Inneren des Druckbehälters 22 wieder ein vorbestimmtes Maximum erreicht.In the exemplary embodiments, a
- 22
- Hochdruckpumpehigh pressure pump
- 44
- Wasserzufuhrwater supply
- 66
- HochdruckleitungHigh-pressure line
- 88th
- Austrittsdüseexhaust nozzle
- 1010
- HochdruckwasserstrahlHigh pressure water jet
- 1212
- Werkstückworkpiece
- 1414
- Abrasivmittel-ZuführeinrichtungAbrasive feed
- 1616
- Abrasivmittelabrasive
- 1818
- Baueinheitunit
- 2020
- Positioniersystempositioning
- 2222
- Druckbehälterpressure vessel
- 2424
- Einlassinlet
- 2626
- Auslassoutlet
- 2828
- Drehschieberrotary vane
- 3030
- Dichtplattesealing plate
- 3232
- Dichtplattesealing plate
- 3434
- Elektrischer AntriebsmotorElectric drive motor
- 3636
- Dichtflächesealing surface
- 3636
- Dichtflächesealing surface
- 40, 40'40, 40 '
- Kammernchambers
- 4242
- AbrasivmittelzufuhröffnungAbrasivmittelzufuhröffnung
- 4444
- AbrasivmittelzufuhrAbrasivmittelzufuhr
- 4646
- Abrasivmittelabrasive
- 48, 48'48, 48 '
- Eintrittsöffnunginlet opening
- 50, 50'50, 50 '
- Austrittsöffnungoutlet opening
- 5252
- Eintrittsöffnunginlet opening
- 5858
- Speicherraumstorage space
- 6060
- Druckzufuhrpressure feed
- 6262
- Absperrventilshut-off valve
- 6464
- Absperrventilshut-off valve
- 6666
- Absperrventilshut-off valve
- 6868
- Füllstandssensorlevel sensor
- 7070
- Kammerchamber
- 71, 7471, 74
- Kugelhähneball valves
- DD
- Drehrichtungdirection of rotation
- XX
- Drehachseaxis of rotation
Claims (18)
- A water-abrasive suspension cutting system with a high-pressure source (2) which provides water under a high pressure, with an exit nozzle (8) and with a high-pressure conduit (6) which connects the high-pressure source (2) to the exit nozzle, wherein an abrasive agent feed device (14) connected to the high-pressure conduit (6) is present, characterised in that
the abrasive agent feed device (14) comprises a lock with at least one chamber (40, 40', 70), wherein the chamber (40, 40', 70) is provided with at least one first closable opening (50, 50') and can be alternately opened to the high-pressure conduit (6) and to an abrasive agent feed. - A water-abrasive suspension cutting system according to claim 1, characterised in that the abrasive agent feed device (14) comprises a movable slide (28), in which the at least one chamber (40, 40') is formed and the slide (28) is movable between at least two positions, wherein in a first position of the slide the first opening (50) of the chamber lies opposite an entry opening (52) of the high-pressure conduit (6), and in a second position of the slide the first opening (50, 50') of the chamber (40, 40') lies opposite a closed wall (38) or an abrasive agent feed opening.
- A water-abrasive suspension cutting system according to claim 2, characterised in that the movable slide (28) comprises at least two chambers (40, 40') which are formed therein and which in each case comprise at least one first opening (50, 50'), and the slide (28) is movable between at least two positions, wherein in a first position of the slide, the opening (50) of a first chamber (40) lies opposite an entry opening (52) of the high-pressure conduit, whereas the opening (50, 50') of a second chamber lies opposite a closed wall (38) or an abrasive agent feed opening, and in a second position of the slide, the opening (50) of the second chamber (40) lies opposite an entry opening (52) of the high-pressure conduit, whereas the opening (50, 50') of the first chamber lies opposite a closed wall (38) or an abrasive agent feed opening.
- A water-abrasive suspension cutting system according to claim 3, characterised in that the high-pressure conduit (6) comprises an entry opening (52), and the openings (50, 50') of the at least two chambers can be alternately brought into a position lying opposite this one entry opening (52), by way of moving the slide (28).
- A water-abrasive suspension cutting system according to one of the claims 2 to 4, characterised in that the first opening (50, 50') of the chambers (40, 40') in each case forms an exit opening, and the chambers apart from the exit opening (50, 50') each comprise an entry opening (48, 48'), and in a first position of the slide the entry opening (48) of a first chamber (40) lies opposite an abrasive agent feed opening (42), whereas in a second position of the slide (28) the entry opening (48, 48') of the first chamber (40, 40') lies opposite a closed wall (35).
- A water-abrasive suspension cutting system according to claim 5, characterised in that at least two chambers (40, 40') are formed in the slide (28), and in a first position of the slide the entry opening (48) of a first chamber (40) lies opposite an abrasive agent feed opening (42), whereas the entry opening (48, 48') of a second chamber (36) lies opposite a closed wall, and in a second position of the slide the entry opening (48) of the second chamber (40) lies opposite an abrasive agent feed opening (42), whereas the entry opening (48, 48') of the first chamber (40, 40') lies opposite a closed wall (36).
- A water-abrasive suspension cutting system according to claim 6, characterised in that an abrasive agent feed opening (42) is provided, and the entry openings (48, 48') of the at least two chambers (40, 40') can be alternately brought into a position lying opposite this one abrasive agent feed opening (42) by way of a movement of the slide (28).
- A water-abrasive suspension cutting system according to one of the claims 1 to 7, characterised in that the slide is designed as a linearly movable slide.
- A water-abrasive suspension cutting system according to one of the claims 2 to 7, characterised in that the slide is designed as a rotary slide (28).
- A water-abrasive suspension cutting system according to claim 9, characterised in that the rotary slide (28) comprises a rotary drive (34) which effects a continuous drive in a rotation direction (D).
- A water-abrasive suspension cutting system according to one of the claims 9 or 10, characterised in that an abrasive agent feed with an abrasive agent feed opening (42) is provided, the high-pressure conduit (6) comprises an entry opening (52), and the rotary slide (28) comprises at least two chambers (40, 40'), of which in at least one first position of the rotary slide (28) a chamber (40) with an opening (48) lies opposite the abrasive agent feed opening (42) and a chamber (40) with an opening (50) lies opposite the entry opening (52).
- A water-abrasive suspension cutting system according to claim 11, characterised in that the rotary slide (28) comprises at least three chambers (40, 40'), of which a third chamber (40') is closed to the abrasive agent feed (44) as well as the high-pressure conduit (6), when the first and second chamber (40) are open to the abrasive agent feed (44) or to the high-pressure conduit (6).
- A water-abrasive suspension cutting system according to one of the claims 9 to 12, characterised in that the rotary slide (28) is designed as a rotary disc, in which the at least one chamber (40, 40') as a through-hole extends from a first surface to a second surface which is opposed in the direction of the rotation axis (X).
- A water-abrasive suspension cutting system according to the claims 2 to 13, characterised in that the slide (28) is led between two sealing surfaces (36, 38) which extend parallel to the movement direction, wherein a first surface of the slide (28) bears on a first sealing surface and a second surface of the slide (28) bears on an opposite second sealing surface (38).
- A water-abrasive suspension cutting system according to claim 14, characterised in that an abrasive agent feed opening (42) of the abrasive agent feed (44) is formed in the first sealing surface (36).
- A water-abrasive suspension cutting system according to claim 14 or 15, characterised in that an entry opening (52) of the high-pressure conduit (6) is formed in the second sealing surface (38).
- A water-abrasive suspension cutting system according to the claims 2 to 16, characterised in that the entry opening (52) of the high-pressure conduit (6) runs out into a pressure container (22) situated in the high-pressure conduit (6).
- A water-abrasive suspension cutting system according to the claims 2 to 14, characterised in that the at least one chamber (40, 40') in the slide (28) or an abrasive agent feed (44) upstream of the abrasive agent feed opening (42) are provided with pressure-subjection means (54).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL11785613.8T PL2755802T3 (en) | 2011-09-14 | 2011-09-14 | Device for waterjet cutting with abrasive |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2011/065915 WO2013037405A1 (en) | 2011-09-14 | 2011-09-14 | Abrasive water jet cutting system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2755802A1 EP2755802A1 (en) | 2014-07-23 |
EP2755802B1 true EP2755802B1 (en) | 2016-04-06 |
Family
ID=45002911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11785613.8A Active EP2755802B1 (en) | 2011-09-14 | 2011-09-14 | Device for waterjet cutting with abrasive |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2755802B1 (en) |
PL (1) | PL2755802T3 (en) |
WO (1) | WO2013037405A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018177556A1 (en) | 2017-03-31 | 2018-10-04 | Ant Applied New Technologies Ag | Water-abrasive-suspension cutting system |
WO2018177557A1 (en) | 2017-03-31 | 2018-10-04 | Ant Applied New Technologies Ag | Water-abrasive-suspension cutting system and method for water-abrasive-suspension cutting |
WO2018177559A1 (en) | 2017-03-31 | 2018-10-04 | Ant Applied New Technologies Ag | Water abrasive suspension cutting system and method for water abrasive suspension cutting |
WO2018177558A1 (en) | 2017-03-31 | 2018-10-04 | Ant Applied New Technologies Ag | Water-abrasive-suspension cutting system and method for water-abrasive-suspension cutting |
WO2018197018A1 (en) * | 2017-04-28 | 2018-11-01 | Ant Applied New Technologies Ag | Water-abrasive-suspension cutting system |
EP4205905A1 (en) | 2021-12-30 | 2023-07-05 | SR Robotics Sp. z.o.o. | Underwater, remote-controlled high pressure cutting device with addition of abrasive material, and cutting and abrasive material feeding method |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11260503B2 (en) | 2013-12-20 | 2022-03-01 | Flow International Corporation | Abrasive slurry delivery systems and methods |
CN106163742B (en) * | 2014-04-04 | 2018-04-03 | 艾恩特应用新技术公司 | Water mill pulp suspension cutting equipment |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR394772A (en) * | 1907-10-12 | 1909-02-01 | Alfred Gutmann Aktien Ges Fuer | Apparatus designed to blow sand jets under pressure, with automatic introduction of the sand into the closed chamber into which the pressure pipe opens |
GB1008503A (en) * | 1962-07-12 | 1965-10-27 | Ajem Lab Inc | Process and apparatus for the surface treatment of articles |
ATE264729T1 (en) | 2000-10-20 | 2004-05-15 | Ant Applied New Technologies A | METHOD FOR FILLING A PRESSURE VESSEL AND DEVICE FOR GENERATING A JET OF A SUSPENSION |
-
2011
- 2011-09-14 EP EP11785613.8A patent/EP2755802B1/en active Active
- 2011-09-14 WO PCT/EP2011/065915 patent/WO2013037405A1/en active Application Filing
- 2011-09-14 PL PL11785613.8T patent/PL2755802T3/en unknown
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018177556A1 (en) | 2017-03-31 | 2018-10-04 | Ant Applied New Technologies Ag | Water-abrasive-suspension cutting system |
WO2018177557A1 (en) | 2017-03-31 | 2018-10-04 | Ant Applied New Technologies Ag | Water-abrasive-suspension cutting system and method for water-abrasive-suspension cutting |
WO2018177559A1 (en) | 2017-03-31 | 2018-10-04 | Ant Applied New Technologies Ag | Water abrasive suspension cutting system and method for water abrasive suspension cutting |
WO2018177558A1 (en) | 2017-03-31 | 2018-10-04 | Ant Applied New Technologies Ag | Water-abrasive-suspension cutting system and method for water-abrasive-suspension cutting |
CN110753601A (en) * | 2017-03-31 | 2020-02-04 | 艾恩特应用新技术公司 | Water abrasive suspension cutting equipment |
US11305401B2 (en) | 2017-03-31 | 2022-04-19 | Ant Applied New Technologies Ag | Water-abrasive-suspension cutting system |
US11511392B2 (en) | 2017-03-31 | 2022-11-29 | Ant Applied New Technologies Ag | Water abrasive suspension cutting system and method for water abrasive suspension cutting |
US11904435B2 (en) | 2017-03-31 | 2024-02-20 | Ant Applied New Technologies Ag | Water-abrasive-suspension cutting system and method for water-abrasive-suspension cutting |
WO2018197018A1 (en) * | 2017-04-28 | 2018-11-01 | Ant Applied New Technologies Ag | Water-abrasive-suspension cutting system |
EP4205905A1 (en) | 2021-12-30 | 2023-07-05 | SR Robotics Sp. z.o.o. | Underwater, remote-controlled high pressure cutting device with addition of abrasive material, and cutting and abrasive material feeding method |
Also Published As
Publication number | Publication date |
---|---|
EP2755802A1 (en) | 2014-07-23 |
PL2755802T3 (en) | 2016-10-31 |
WO2013037405A1 (en) | 2013-03-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2755802B1 (en) | Device for waterjet cutting with abrasive | |
DE69116670T2 (en) | Flow control method and apparatus | |
DE2335893C3 (en) | Device for generating pulsating jets of liquid at high speed and high pulse frequency | |
DE3138678A1 (en) | DOUBLE DIAPHRAGM REVERSE VALVE PUMP | |
DE2363721A1 (en) | TRANSPORT EQUIPMENT | |
WO2015158429A1 (en) | Blowing device for a rotary air lock | |
DE2918786C2 (en) | Rotary valve | |
EP0114278A1 (en) | Shut-of device for pneumatic transporting systems for the transport of pourable bulk materials | |
DE3738359A1 (en) | FUEL PUMP | |
DE2209169B2 (en) | Device for filling molds or cavities with a flowable mixture of in particular foam-forming reaction components | |
DE3912436C2 (en) | Drainage control device | |
EP0845339A1 (en) | Internal mixer for mixing rubber or similar compositions and a method for mixing rubber or similar compositions in the internal mixer | |
EP0394790B1 (en) | Device for making a fluid reactive mixture from at least two fluid reactive components for making solid or cellular plastic material | |
DE4000687A1 (en) | DEVICE FOR HYDRAULIC CONVEYING OF SCHUETTGUETE | |
DE2318995C2 (en) | Remote controlled valve for a compressed air sandblasting system | |
DE672643C (en) | Valve control for hydraulic multi-cylinder presses connected to a common feed line | |
DE102023102188B3 (en) | Device, system and method for generating a compressed air pulse | |
DE4317086C1 (en) | Device for mixing at least two flowable components | |
DE1484378B2 (en) | HYDROPOWER PLANT FOR A LOW PRESSURE TURBINE WITH A LOCKABLE DIRECTOR AND A SECONDARY OUTLET ASSOCIATED TO THE TURBINE AND THE DIRECTOR WITH A LOCKING FROM SEVERAL, FROM WATER PRESSURE OF THE WATER PRESSURE OF THE HYDRAULIC FLAP | |
DE2601192C2 (en) | Seal in a conveyor | |
DE4420694A1 (en) | Dosage pump for liquids or pastes, especially plastics resin | |
DE851478C (en) | Lock for compressed air conveyor systems | |
DE2246391C3 (en) | Infeed process and drum feeder for solids in a high-pressure delivery line for hydraulic coal delivery from great depths | |
DE4343730C1 (en) | Charging valve unit for cellulose digester installations and its use | |
DE1917888C3 (en) | Valve devices in the loading and unloading head of a hydraulically driven piston pump for pumping concrete |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 |
|
17P | Request for examination filed |
Effective date: 20140407 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20150601 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20151027 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 787208 Country of ref document: AT Kind code of ref document: T Effective date: 20160415 Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502011009378 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 6 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: ISLER AND PEDRAZZINI AG, CH |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: FP |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
REG | Reference to a national code |
Ref country code: NO Ref legal event code: T2 Effective date: 20160406 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160806 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160808 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160707 |
|
REG | Reference to a national code |
Ref country code: SK Ref legal event code: T3 Ref document number: E 21512 Country of ref document: SK |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502011009378 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 |
|
26N | No opposition filed |
Effective date: 20170110 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160914 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160914 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SK Payment date: 20170724 Year of fee payment: 7 Ref country code: NO Payment date: 20170731 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20170720 Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20110914 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160406 |
|
REG | Reference to a national code |
Ref country code: NO Ref legal event code: MMEP |
|
REG | Reference to a national code |
Ref country code: SK Ref legal event code: MM4A Ref document number: E 21512 Country of ref document: SK Effective date: 20180914 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20180930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NO Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180914 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180930 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20230920 Year of fee payment: 13 Ref country code: GB Payment date: 20230921 Year of fee payment: 13 Ref country code: CZ Payment date: 20230901 Year of fee payment: 13 Ref country code: AT Payment date: 20230915 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20230921 Year of fee payment: 13 Ref country code: PL Payment date: 20230901 Year of fee payment: 13 Ref country code: FR Payment date: 20230919 Year of fee payment: 13 Ref country code: DE Payment date: 20230922 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20230929 Year of fee payment: 13 Ref country code: CH Payment date: 20231001 Year of fee payment: 13 |