EP3615273A1 - Wasser-abrasiv-suspensions-schneidanlage - Google Patents
Wasser-abrasiv-suspensions-schneidanlageInfo
- Publication number
- EP3615273A1 EP3615273A1 EP17721606.6A EP17721606A EP3615273A1 EP 3615273 A1 EP3615273 A1 EP 3615273A1 EP 17721606 A EP17721606 A EP 17721606A EP 3615273 A1 EP3615273 A1 EP 3615273A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- abrasive
- water
- pressure vessel
- pressure
- suspension
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
- B24C1/045—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass for cutting
Definitions
- the present disclosure relates to a water-abrasive suspension cutting machine with the features specified in the preamble of claim 1.
- Water-abrasive suspension cutters are used to cut materials by means of a high-pressure water jet to which an abrasive is added.
- Water-abrasive suspension cutting systems are to be differentiated from water-abrasive injection-cutting systems, in which the abrasive is introduced only in or at an outlet nozzle in the already very accelerated water.
- the high-pressure water is first mixed with the abrasive and then the water-abrasive slurry is accelerated in the outlet nozzle.
- the abrasive-to-water ratio can be made higher and a higher cutting force can be achieved because the water under high pressure is controlled upstream of the exit gland without air entrainment with the abrasive. is mixed.
- a part of the water flow can be guided through an abrasive container, which is designed as a pressure vessel.
- abrasive container which is designed as a pressure vessel.
- Such a system is z. B. from EP 1 199 136 known.
- a technical challenge in these systems is the setting of a constant desired Abrasivschentddlingaufoms from the pressure vessel to set a desired mixing ratio of water and abrasive in the cutting jet and to keep constant during cutting.
- the water-abrasive-suspension cutting apparatus disclosed herein has the advantage over the above solutions that a desired abrasive bleed stream can be adjusted and maintained from the pressure vessel to adjust a desired mixing ratio between water and abrasive in the cutting jet and cutting constant.
- Advantageous embodiments of the disclosure are set forth in the subclaims, the following description and the drawings.
- the Water Abrasive Suspension Cutting Machine disclosed herein comprises a high pressure source for supplying high pressure water, a high pressure fluid line connected to the high pressure source having an upstream portion and a downstream portion,
- a discharge nozzle fluidly connected to the downstream portion of the high pressure line for generating a cutting jet
- a pressure vessel for providing a pressurized water abrasive slurry, the pressure vessel fluidly connected to the upstream portion of the high pressure line and the discharge side thereof downstream section of the high pressure line is fluidly connected.
- a pumping or conveying device On the output side of the pressure vessel, a pumping or conveying device is arranged, wherein the pumping or conveying device is set up to convey the water-abrasive suspension from the pressure vessel and to supply it to the downstream section of the high-pressure line.
- Abrasive fluid can be removed from the pressure vessel by the pumping or conveying device on the outlet side in a controlled and defined manner in order to set a desired mixing ratio between water and abrasive in the cutting jet and to keep it constant during cutting.
- the dependence of the abrasive removal flow on the pressure difference between the pressure vessel inlet and outlet is thus reduced or completely prevented, so that the Abrasivstoffentddlingstrom not with the level and / or the Abrasivffenverotti in the pressure vessel varies, but can be specified by the pumping or conveyor.
- upstream section of the high-pressure line is meant a section of the high-pressure line which purportedly carries only water and no abrasive Meant high-pressure line, the intended purpose of a water-abrasive suspension leads.
- the pumping or conveying device can be a jet pump with which water-abrasive suspension from the pressure vessel can be sucked by means of a water flow through a taper in the downstream section of the high-pressure line.
- the jet pump immediately mixes the abrasive into the water flow and thus supplies it to the downstream section of the high-pressure line.
- the jet pump manages without moving parts, which are generally exposed to severe wear because of the water-abrasive suspension and the high pressures of 1 .000 to 4,000 bar.
- the pumping or conveying device may be a screw conveyor with which water-abrasive suspension can be fed to the downstream section of the high-pressure line by means of a motor.
- the screw conveyor project at least partially into the pressure vessel.
- the abrasive removal flow with a screw conveyor is as good as independent of the pressure difference between the pressure vessel inlet and outlet. This can possibly be dispensed with an input-side inflow control in the pressure vessel.
- the conveyor check it is also possible to use a paddle wheel or a similar mechanical abrasive removal device in order to deliver abrasive particles portion-wise or continuously from the pressure vessel.
- the pumping or conveying device can be set up to convey the water-abrasive agent suspension as a function of at least one controlled variable out of the pressure vessel and to supply it to the downstream section of the high-pressure line.
- the at least one controlled variable may have a sensor signal and / or an operating parameter of the high-pressure source.
- the controlled variable can have several parameters, combinations of parameters or calculations from one or more parameters. "Hommel" means in this sense that the at least one controlled variable depends on the sensor signal or the parameter, or the sensor signal or the parameter is included in the controlled variable.
- the at least one controlled variable has an abrasive flow from the pressure vessel or a parameter characteristic of an abrasive flow from the pressure vessel.
- the system may include a first level sensor for signaling at least a first level of abrasive in the pressure vessel. The at least one controlled variable may then have a temporal change of the first fill level.
- the system may include a first level sensor for signaling at least a first level of abrasive in the pressure vessel and a second level sensor for signaling at least a second level of abrasive in the pressure vessel, wherein the at least one controlled variable is a time difference between the first level and may have the second level.
- the level sensors may be ultrasonic sensors or optical sensors, which are arranged at different vertical positions on the pressure vessel and can signal a certain level. With known geometry of the pressure vessel and known vertical distance between the first and the second level sensor, the time difference is characteristic of an Abrasivffenentddling raw raw material, after which the pumping or conveying device can be regulated.
- the screw conveyor can be driven by a motor, in particular a speed-controlled electric servomotor, wherein the motor is regulated depending on the at least one controlled variable.
- the plant may include an abrasive agent flow sensor disposed at the downstream portion of the high pressure line for signaling an abrasive withdrawal flow, after which the pumping or delivery means may be controlled.
- the abrasive flow sensor may, for example, count abrasive particles passing through the downstream portion of the high pressure line or otherwise measure the abrasive flow. This can e.g. by means of ultrasound, optically, inductively via ferromagnetic markers in the abrasive or via a structure-borne noise measurement.
- the controlled variable speed and / or tent position. Have current consumption of the high pressure source.
- About the speed and / or power or current consumption of the high pressure source can be closed to the flow of water through the high pressure line, which can co-determine the mixing ratio in the cutting jet. Therefore, these or other operating parameters of the high-pressure line can preferably be included in the at least one controlled variable.
- a flow sensor can measure or signal a flow of water through the high-pressure line, so that it can enter into the at least one controlled variable.
- a water abrasive slurry cutting method comprising the steps of:
- the water-abrasive suspension from the pressure vessel can be conveyed by suction from the pressure vessel by means of a jet pump, by means of a water flow through a taper in the downstream portion of the high-pressure line water-abrasive suspension can be sucked from the pressure vessel , Sucking can also have a supporting effect on an already existing or additionally generated pressure difference between the pressure vessel inlet and outlet.
- the water-abrasive suspension can be conveyed out of the pressure vessel by means of a screw conveyor.
- the conveying can act in an already existing or additionally generated pressure difference supportive between pressure vessel inlet and outlet.
- the water-abrasive suspension is conveyed regulated from the pressure vessel depending on at least one controlled variable.
- the at least one controlled variable may optionally have a sensor signal and / or an operating parameter of the high-pressure source.
- the at least one controlled variable may be a change of an abrasive agent level in the pressure vessel or a change of an abrasive fluid level in the pressure vessel. have characteristic parameters.
- the method may optionally include signaling a first level of abrasive in the pressure vessel by means of a first level sensor, wherein the at least one controlled variable may have a temporal change of the first level.
- the method may include signaling a first level of abrasive in the pressure vessel by means of a first level sensor and signaling a second level of abrasive in the pressure vessel by a second level sensor, wherein the at least one controlled variable is a time difference between the first level and the second level Has level.
- the method may include signaling an abrasive flow by means of an abrasive flow sensor arranged at the downstream section of the high-pressure line, wherein the at least one control variable comprises the abrasive flow signaled by the abrasive flow sensor.
- the at least one controlled variable may have a rotational speed and / or power or current consumption of the high-pressure source.
- Fig. 1 is a schematic circuit diagram of a first embodiment of the disclosed herein water-abrasive suspension cutting machine
- FIGS. 2a-c show schematic partial circuit diagrams with different arrangements of the first exemplary embodiment of the water-abrasive suspension cutting system disclosed herein;
- FIGS. 3 to 5 are schematic circuit diagrams of different embodiments of a second embodiment of the water-abrasive suspension cutting system disclosed herein; 6a-c show schematic partial circuit diagrams with different arrangements of the second exemplary embodiment of the water-abrasive suspension cutting system disclosed herein; and
- Fig. 7 is a schematic flow diagram of an embodiment of the method disclosed herein for water-abrasive-suspension cutting.
- the Water Abrasive Suspension Cutting Machine shown in FIG. 7 is a schematic flow diagram of an embodiment of the method disclosed herein for water-abrasive-suspension cutting.
- I has a high pressure source 3, the water in a high pressure line 5 under a high pressure po of about 1 .000 to 4,000 bar available.
- the high-pressure line 5 is connected to an outlet nozzle 7 from which the high-pressure water emerges at a very high speed in a jet 9. So that the jet 9 can be used effectively as a cutting jet for cutting material, the high-pressure line 5 is branched such that at least part of the flow through the high-pressure line 5 through a pressure vessel
- a jet pump 16 arranged on the output side of the pressure vessel 1 1 defines a taper in a downstream section 70 of the high-pressure line 5, which is connected to a removal point 68 via a lateral opening and utilizes the water-abrasive suspension 13 from the Pressure vessel 1 1 sucks and the downstream section 70 of the high-pressure line 5 admixed.
- the proportion of the water-abrasive suspension 13 in the jet 9 can be adjusted via a throttle 1 7, by the flow rate in the guided through the pressure vessel 1 1 side of the high-pressure line 5 is throttled.
- the throttle 17 may be static, for example in the form of a pinhole or adjustable or regulated be designed.
- the throttle 17 is adjustable, so that the throttle 17 may possibly also completely shut off the inflow into the pressure vessel 1 1, so that it is possible to dispense with the shut-off valve 15.
- the throttle 17 is preferably controllable, wherein a signal characteristic of the excessive drive current which can be obtained from a sensor or an available operating parameter is used as a controlled variable for controlling the opening of the throttle 17 (see FIGS. 2a-c).
- the present disclosure is applicable to both systems in which a cutting process can only last until the emptying of the pressure vessel and the pressure vessel must be refilled with non-pressurized system, as well as for those systems in which the pressure vessel 1 1 in printed plant can be refilled sequentially during cutting.
- the pressure vessel 11 is replenished sequentially during the cutting operation when the system 1 is printed.
- a refill valve 19 is arranged in the form of a ball valve above the pressure vessel 1 1.
- the refill valve 19 connects a lock chamber 21 arranged above the refill valve 19 with the pressure vessel 11.
- the filling valve 23 may be configured substantially identical to the refill valve 19 in the form of a ball valve.
- the refilling funnel 25 is not under pressure, so that dry, moist or wet abrasive or a water-abrasive suspension can be filled from above.
- This can be, at least in part, an abrasive agent which has been reprocessed from the cutting jet 9 and which can be introduced into the refilling funnel 25 from above via a conveying device in dry, wet, frozen, pelletized or suspended form.
- the lock chamber 21 may be temporarily depressurized.
- a pressure in the lock chamber 21 can be discharged via a pressure relief valve 27 in the form of a needle valve into a drain 29.
- the filling valve 23 may be open, so that abrasive falls from the refilling hopper 25 into the lock chamber 21.
- This gravitational filling of the lock chamber 21 with abrasive can be supported and accelerated by a pump 31st
- the pump 31 may be connected on the suction side with the lock chamber 21 and the pressure side with the refilling funnel 25.
- the pump 31 sucking abrasive into the lock chamber 21. This is especially useful when abrasive material clogs in the tapered lower region of the refilling funnel 25 or on the filling valve 23.
- the pump 31 does not need to be designed for high pressure, it is advantageous if the pump 31 by means of a Pumpenabsperrventils 33 in the form of a needle valve from the lock chamber 21 can be shut off.
- the pump shut-off valve 33 can be embodied flushable in order to purge the valve seat and the valve body, for example in the form of a valve needle, of abrasive material. This ensures on the one hand a tight closing of the pump shut-off valve 33 and reduces the material wear in the valve.
- the pump 31 can be largely protected from abrasives by means of an upstream filter and / or separator (both not shown). [25]
- the Pumpenabsperrventil 33 is only opened when the lock chamber 21 is already depressurized.
- a needle valve in which a side scavenging inlet and an opposite side scavenging outlet are provided can be used.
- an embodiment of the needle valve is more advantageous, in which a check valve is provided at the scavenging inlet. Since the pressure release valve 27 is opened at high pressure, the check valve prevents a pressure release in the direction of the scavenging inlet.
- the Spülauslass can open into the drain 29, so that both the pressure relief and the Spülstoffablass takes place only to the drain 29 out and not to Rinse inlet.
- the filling valve 23 can be closed.
- the pressure relief valve 27 and the Pumpenabsperr- valve 33 are closed.
- the lock chamber 21 has a printing input 35 in a lower region, via which the lock chamber 21 can be printed.
- the printing input 35 is connected via a pressure valve 37 and a throttle 41 to the high-pressure line 5. If the throttle 41 can be adjusted to a degree at which the connection between the high-pressure line 5 and the pressure input 35 can be shut off completely, the pressure valve 37 can possibly be dispensed with. As soon as the pressure valve 37 is opened, the high-pressure line 5 imprints the lock chamber 21.
- the throttle 41 By the throttle 41, the amplitude of the pressure drop in the high-pressure line 5 is restricted to a minimum.
- the high-pressure source 3 can react so quickly to an initial pressure drop via a servo pump control and adjust the pump power correspondingly quickly so that it does not even come to a large amplitude of pressure drop.
- the high-pressure source 3 can be notified of an initial pressure drop, so that the high-pressure source 3 is supplied with an increase in power or rotational speed. Lerhöhung can counteract another pressure drop quickly.
- the initial pressure drop can already be mitigated, so there is no time to a pressure drop, which significantly affects the cutting performance.
- the refill valve 19 can be opened, so that gravitationally or assisted abrasive can flow from the lock chamber 21 through the refill valve 19 into the pressure vessel 1 1 to refill this.
- a conveying aid 45 for example in the form of a pump, is provided, which is connected on the suction side with the pressure vessel 1 1 and the pressure side with the lock chamber 21.
- the conveying aid 45 supports or generates the abrasive flow from the lock chamber 21 down into the pressure vessel 1 1. It can prevent or dissolve blockages of abrasive and accelerate the gravity-induced or assisted refilling process.
- the conveying aid 45 operates on the pressure vessel 1 1 with water under the nominal high pressure po.
- a naval vessel 47 is disposed between the conveying aid 45 and the lock chamber 21, wherein the originally provedabsperrventil 47 in the form of a needle valve, the pump 47 against the lock chamber 21 shut off when the lock chamber 21 is not or not completely printed.
- the auxiliary conveying shut-off valve 47 is a flushable needle valve with a check valve on the rinse inlet, since it is operated under high pressure.
- the refill valve 19 In addition to an upper valve inlet 49 and a lower valve outlet 51, the refill valve 19 also has a lateral pressure inlet 53. About the pressure inlet 53, a valve chamber, in the a movable valve body is printed. Namely, without printing on the valve space, it may be that when the system is started up, the very high pressures on the valve inlet 49 and the valve outlet 51 press the valve body so strongly into the valve seat that the valve body can no longer be moved. Via the lateral pressure inlet 53, a pressure compensation in the refill valve 19 can be made, so that the valve body is movable after commissioning.
- the abrasive medium line in the jet pump 16 is again brought together with the high-pressure line 5 so that the cutting jet contains, for example, a defined and constant mixing ratio of 1: 9 abrasive agent suspension and water.
- the mixing ratio is regulated via the input side connected to the pressure vessel 1 1 control valve 17.
- the abrasive fluid removal flow is maximum and the mixing ratio is maximum.
- the Abrasivstoffent Spotifyl is minimal or zero and the mixing ratio correspondingly low or contains the cutting jet 9 then only water.
- a certain mixing ratio can be optimal in which only as much abrasive agent is removed as necessary to achieve the cutting performance.
- the cutting performance can be adjusted by the mixing ratio during cutting.
- the refilling of the pressure vessel 1 1 with abrasive can be controlled in accordance with the abrasive removal flow so that there is always sufficient abrasive suspension 13 in the pressure vessel 11 for continuous cutting.
- Fig. 2a-c are each four different levels of the abrasive in the pressure vessel 1 1 indicated by dashed cones.
- the maximum level cone Fmax is defined by the fact that with further refilling with abrasive in the pressure vessel 1 1, a backflow into the refill valve 19 would result.
- the minimum fill level cone Fmin is defined by the fact that, on further removal of the abrasive agent, the abrasive agent content of the abrasive agent suspension in the exit-side abrasive feed line 70 would decrease.
- level sensors 72, 74, 76 can be arranged on the pressure vessel 11 in order to signal the reaching of a filling cone.
- the fill level sensors 72, 74, 76 may be, for example, ultrasonic sensors, optical sensors or barriers, electromagnetic sensors or sensors of another type.
- the level sensors 72, 74, 76 are ultrasonic sensors that reach a level cone can signal via a change in structure-borne noise.
- an upper level sensor 72 may signal the reaching of the level cone Fi and start a timer or define a time ti.
- a lower level sensor 74 may signal the reaching of the level cone F2 and stop a timer at At or define a time h.
- a mean Abr- sivstoffentddlingl can be determined as AV / At and AV / (t2-ti).
- the third lowermost level sensor 76 can signal the minimum level cone Fmin and immediately cause a shut-off of the shut-off valve 15 in order to prevent empty suction of the pressure vessel 1 1.
- other operating parameters such as the pump speed and / or the power consumption of the high-pressure source 3 for determining the abrasive fluid removal flow and its control can also be used as control variable for the control valve 17.
- the abrasive medium flow or the mixing ratio can also be determined by means of a corresponding sensor 79 at the downstream section 70 of the high-pressure line 5 or in front of the outlet nozzle 7 and used as a controlled variable for the control valve 17.
- the level sensors 72, 74 can also be used to control or clock the refill cycles.
- a filling of the lock chamber 21 can fit above the upper level sensor 72 between the level cone Fi and the maximum level cone Fmax. If the level cone falls below Fi, the upper level sensor 72 can trigger a filling of the lock chamber 21 so that it is completely filled when the lower level sensor 74 signals the level cone F2 and thus can trigger refilling from the filled lock chamber 21 into the pressure vessel 1 1. This prevents the level cone from reaching the minimum filling level. Fm sinks. Between the minimum fill level cone Fmin and the fill level cone F2, at least one fill of the lock chamber 21 can likewise be used as a buffer.
- the lock chamber 21 can be automatically filled again immediately as soon as the refilling of the pressure vessel 1 1 is completed. Then only with the level cone F2 refilling from the lock chamber 21 needs to be triggered.
- the vertical distance between the upper level sensor 72 and the lower level sensor 74 may be chosen to be relatively short, for example, so short that a decrease between Fi and F2 lasts shorter than a filling operation of the lock chamber 21. With a shorter vertical distance, the average abrasive take-off flow AV / At or AV / ( ⁇ 2- ⁇ i) can be determined more frequently and thus more accurately reflect the current abrasive take-off flow dV / dt.
- a screw conveyor 80 is shown, which is driven by a servo motor 81.
- the auger 80 can convey abrasive material upward via a rotation about its longitudinal axis and thus supply it to the downstream section 70 of the high-pressure line 5 in a defined manner.
- the servomotor 81 can be regulated via at least one controlled variable.
- the screw conveyor 80 can also be arranged on a lower-side abrasive outlet of the pressure vessel 11, and convey abrasives in a defined manner downwards through the lower-side abrasive outlet of the pressure vessel 11.
- the Abrasivstoffitzaustrag is gravity assisted.
- a mixing chamber 82 is arranged, in which a main stream of water from the upstream section of the high pressure line 5 is mixed with the abrasive fed from the pressure vessel 11 and the downstream section 70 the high-pressure line 5 is supplied.
- the screw conveyor 80 is preferably driven by a controlled servo motor 81, wherein a drive shaft guided through the mixing chamber 82 transmits the torque of the servomotor 81 to the screw conveyor 80.
- a pressure relief line 83 may also be provided on the pressure vessel 11. About a shut-off or control valve 84, the pressure relief line 83 can be opened to relieve the pressure in the pressure vessel 1 1 when needed.
- the shut-off or control valve 84 may be an adjustable or fixed throttle or a combination of a shut-off valve and a throttle or only a shut-off valve.
- the pressure relief line 83 as shown in Figure 5, also be performed directly without shut-off or control valve 84 in the downstream portion 70 of the high-pressure line 5.
- the conveying screw 80 protrudes at least partially into the pressure vessel 11 in order to actively convey abrasive material out of the pressure vessel 11.
- abrasive agent falls through a lower-side abrasive outlet of the pressure vessel 11 onto a conveyor screw 80 arranged horizontally below the pressure vessel 11, which is located in a mixing chamber 82.
- the flow through the high-pressure line 5 assists in conveying the abrasive through the screw conveyor 80.
- the screw conveyor 80 also assists in the mixing of the upstream water flow through the high-pressure line 5 with the abrasive conveyed from the pressure vessel 11.
- FIG. 6 a shows, analogously to FIG. 2 a, how the servomotor 81 is regulated by the control signals of the fill level sensors 72, 74.
- An input-side control valve 1 7 is not required here, since with the screw conveyor 80 the abrasive agent outflow only slightly depends on the pressure difference between the pressure vessel inlet and outlet.
- the speed and / or the power consumption of the high pressure source 3 with enter see Figure 6b.
- the servomotor 81 can be regulated by a signal from an abrasive medium flow sensor 79 at the downstream section 70 of the high-pressure line 5 (see FIG. 6c).
- FIG. 7 illustrates the process steps of the water-abrasive-suspension-cutting process disclosed herein in terms of time, with some or all process steps preferably occurring simultaneously.
- a first step 701 high pressure water is provided in the high pressure line 5 by the high pressure source 3.
- a high-pressure abrasive suspension is provided 703 in the pressure vessel 1 1.
- the water-abrasive suspension is fed 707 into the downstream section 70 of the high-pressure line 5 by means of the pumping or conveying device 16, 80.
- a workpiece or material is removed from the high-pressure jet 9 by removing the abrasive suspension downstream section 70 of the high pressure line 5 cut 709.
- the step of conveying 705 may optionally include suction from the pressure vessel 1 1 by means of a jet pump 16, by means of a water flow through a taper in the downstream section 70 of the high-pressure line 5 water-abrasive suspension from the pressure vessel 1 1 can be sucked , Alternatively, the water-abrasive suspension can be promoted by means of a screw conveyor 80 from the pressure vessel 1 1.
- the water-abrasive agent suspension is preferably conveyed in a controlled manner from the pressure vessel 11 depending on at least one controlled variable.
- the mini- at least one controlled variable optionally have a sensor signal and / or an operating parameter of the high-pressure source.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2017/060260 WO2018197018A1 (de) | 2017-04-28 | 2017-04-28 | Wasser-abrasiv-suspensions-schneidanlage |
Publications (1)
Publication Number | Publication Date |
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EP3615273A1 true EP3615273A1 (de) | 2020-03-04 |
Family
ID=58671626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP17721606.6A Withdrawn EP3615273A1 (de) | 2017-04-28 | 2017-04-28 | Wasser-abrasiv-suspensions-schneidanlage |
Country Status (2)
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EP (1) | EP3615273A1 (de) |
WO (1) | WO2018197018A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11577366B2 (en) | 2016-12-12 | 2023-02-14 | Omax Corporation | Recirculation of wet abrasive material in abrasive waterjet systems and related technology |
US11224987B1 (en) | 2018-03-09 | 2022-01-18 | Omax Corporation | Abrasive-collecting container of a waterjet system and related technology |
WO2021021947A1 (en) * | 2019-07-29 | 2021-02-04 | Omax Corporation | Measuring abrasive flow rates in a conduit |
CN110614591B (zh) * | 2019-08-07 | 2023-12-26 | 浙江工业大学 | 一种利用表层水加压控制磨料运动状态减少磨损的装置 |
WO2021202390A1 (en) | 2020-03-30 | 2021-10-07 | Hypertherm, Inc. | Cylinder for a liquid jet pump with multi-functional interfacing longitudinal ends |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0514945B1 (de) * | 1991-05-23 | 1994-11-09 | PRO AQUA GERÄTE GmbH | Wasser/Sand-Dosiergerät |
GB9622601D0 (en) * | 1994-04-28 | 1997-01-08 | Bhr Group Ltd | Abrasive mixture supply system |
EP1208944A1 (de) * | 2000-11-24 | 2002-05-29 | ANT Applied New Technologies AG | Verfahren zum Befüllen eines Druckbehälters und Vorrichtung zur Erzeugung eines Strahls einer Suspension |
DE10061889B4 (de) * | 2000-12-12 | 2006-05-24 | Coperion Waeschle Gmbh & Co. Kg | Verfahren und Vorrichtung zur hydraulischen Förderung von Schüttgut |
US8834232B2 (en) * | 2007-08-21 | 2014-09-16 | Abrasive Cutting Technology Ltd. | Fluid/abrasive jet cutting arrangement |
EP2755802B1 (de) * | 2011-09-14 | 2016-04-06 | ANT Applied New Technologies AG | Wasser-abrasiv-suspensions-schneidanlage |
EP2814637B1 (de) * | 2012-02-15 | 2015-11-25 | ANT Applied New Technologies AG | Wasser-abrasiv-suspension-schneidanlage |
CN106029299B (zh) * | 2013-12-20 | 2019-05-03 | Flow国际公司 | 磨料浆体的输送系统和方法 |
EP3126094B1 (de) * | 2014-04-04 | 2018-01-31 | ANT Applied New Technologies AG | Wasser-abrasiv-suspensions-schneidanlage |
-
2017
- 2017-04-28 EP EP17721606.6A patent/EP3615273A1/de not_active Withdrawn
- 2017-04-28 WO PCT/EP2017/060260 patent/WO2018197018A1/de active Application Filing
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WO2018197018A1 (de) | 2018-11-01 |
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