EP3973185A1 - Exzenterschneckenpumpe - Google Patents
ExzenterschneckenpumpeInfo
- Publication number
- EP3973185A1 EP3973185A1 EP20800069.5A EP20800069A EP3973185A1 EP 3973185 A1 EP3973185 A1 EP 3973185A1 EP 20800069 A EP20800069 A EP 20800069A EP 3973185 A1 EP3973185 A1 EP 3973185A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connecting shaft
- sensor
- housing
- pump
- rotor
- 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.)
- Pending
Links
- 230000000750 progressive effect Effects 0.000 title abstract 2
- 230000008878 coupling Effects 0.000 claims abstract description 21
- 238000010168 coupling process Methods 0.000 claims abstract description 21
- 238000005859 coupling reaction Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims description 7
- 230000001939 inductive effect Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 description 14
- 238000005259 measurement Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
- F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/28—Safety arrangements; Monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
- F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
- F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
- F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
- F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
- F04C2/1075—Construction of the stationary member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/86—Detection
Definitions
- the invention relates to an eccentric screw pump with at least
- a pump housing e.g. suction housing
- stator e.g. suction side
- Coupling rod which is articulated to the connecting shaft with the drive-side end and articulated to the rotor with the rotor-side end and with a centric rotation of the
- Connecting shaft generates an eccentric movement of the rotor end.
- Such an eccentric screw pump is used to convey a wide variety of media and, in particular, highly viscous liquids in various industrial sectors.
- the liquids to be pumped can also contain solids, for example.
- the stator is preferably made of elastic or elastomeric material and is usually surrounded by a stator casing or stator housing.
- the pump housing connected to the stator on the suction side is usually
- the suction housing and the housing connected to the stator on the pressure side, for example, as a pressure port.
- the suction housing (as a pump housing) would then be arranged on the pressure side.
- the designation of the pump housing as a suction housing is therefore independent of the actual conveying direction. It is the housing arranged between the stator and the drive.
- the rotating connection which at the same time ensures the eccentricity, between the drive or the centrically rotating connecting shaft and the eccentrically rotating rotor takes place via a coupling rod located in the pump housing, for example, which is connected to the connecting shaft via a drive-side joint and to the rotor via a rotor-side joint .
- the eccentricity can also be implemented by other measures, that is to say without joints, for example by means of a flexible or flexurally elastic coupling rod.
- Coupling rod consequently means an element which ensures the eccentricity of the rotor or enables or generates the eccentric movement between the centrically rotating connecting shaft and the rotor or its eccentrically rotating rotor end by means of an articulated design or coupling.
- the coupling rod can also carry one or more conveying elements or conveying elements can be attached to the coupling rod, for example a screw or transport screw. This is implemented, for example, with eccentric screw pumps that are designed as funnel pumps.
- the screw can be designed as a flea screw or a full screw.
- the connecting shaft is also referred to as a stub shaft. As a rule, it is connected directly or indirectly to the output shaft of the drive and serves as a connecting piece, as it were, between the output shaft of the drive and the power transmission parts of the pump.
- the connection housing arranged between the pump housing (suction housing) and the drive is used, for example, to accommodate or fasten and support the pump housing
- connection housing is fastened e.g. on a base plate or directly on a foundation and supports and carries the drive of the pump housing.
- Hanging arrangements can also be implemented.
- connection housing can always be designed as an open or at least as an openable connection housing, which is consequently accessible from the outside through an opening.
- the sealing of the pump housing or suction housing against the environment or against the connection housing takes place, for example, by means of a shaft seal, in that the connection shaft is sealed with the shaft seal and in this way separates the suction housing from the environment in a liquid-tight manner.
- the shaft seal can be designed as a mechanical seal, for example.
- Such eccentric screw pumps are known, for example, from DE 10 2014 112 552 A1, DE 102010034440 A1, WO 2009/024279 A1 and DE 102018 102640 A1.
- an eccentric screw pump is known from DE 20 2005 008 989 U1, in which the stator is assigned a measuring transducer with which compressions and / or movements of the stator or the elastic material are measured in the course of the rotation of the rotor.
- the measuring transducer can be, for example, a pressure transducer or a force transducer that is integrated into the stator and registers compressions of the stator.
- the focus is on monitoring the wear and tear on the stator.
- vibration measurements are used to detect possible wear on the bearings and joints of pumps. This applies, for example, to centrifugal pumps in which vibration measurements are used to detect bearing damage.
- DE 10 2005 019 063 B3 also discloses a method for operating an eccentric screw pump for monitoring different operating states, with preliminary tests for certain negative operating states being carried out on the eccentric screw pump, the resulting specific damage frequency image being stored and compared with an overall vibration image during the operating phase , which is removed from just one point on the eccentric screw pump.
- the sensor is located e.g. at the stator input.
- DE 10 2015 112 248 A1 describes an eccentric screw pump with an adjustment mechanism for the stator-rotor system. Actual operating parameters of the stator-rotor system are determined with at least one sensor and the is controlled via a controller
- Adjustment mechanism taking into account the determined operating parameters.
- the state of wear is to be determined either directly via a corresponding sensor system in the elastomer material of the stator or indirectly via the reaction forces of the elastomer on other components.
- the sensor can e.g. measure the pump pressure, the speed, the temperature and / or the volume flow.
- the invention is based on the technical problem of developing a known eccentric screw pump in such a way that damage and in particular joint and / or bearing damage to the pump can be detected in a simple and reliable manner.
- the invention teaches in a generic eccentric screw pump of the type described at the outset that at least one sensor is arranged in the area of the connecting shaft for detecting or measuring a radial runout (of the connecting shaft) which determines a movement profile of the connecting shaft in a predetermined angular position of the connecting shaft, by measuring the distance of the surface of the connecting shaft from the sensor.
- damage to the bearings (e.g. in the drive or its transmission) and / or joints within the pump are not determined or monitored by conventional vibration measurement, but instead the radial runout deviation on the connecting shaft or its (largely) centric is determined running part.
- the invention is based on the knowledge that the wear on bearings, guides and / or joints increases the concentricity deviation of the part of the connecting shaft that ideally rotates in the center. By measuring or monitoring the concentricity or the concentricity deviation of the
- the connecting shaft can consequently be inferred quickly, easily and very reliably about wear on the bearings, guides and / or joints of the pump.
- Such a sensor is preferably designed as a contactless sensor, e.g. as a proximity sensor. It can preferably be an inductive proximity sensor. Alternatively, optical sensors, e.g. optical proximity sensors, can also be used. There is always the possibility of using such a sensor to determine a possible concentricity deviation of the connecting shaft, which ideally rotates centrically with ideal concentricity, by preferably measuring the distance between the surface of the connecting shaft, which has a circular cross section, from the sensor. In ideal operation, the distance between the shaft surface and the sensor does not change during the rotation, so that the measured radial runout - recorded over time - is zero.
- the senor does not measure a distance that is constant over time and consequently over the angle of rotation, but the distance varies with time, with the Time corresponds to the respective angular position of the connecting shaft at this point in time.
- At least two sensors are arranged in the area of the connecting shaft, which are arranged in different angular positions with respect to the connecting shaft and consequently with an angular offset so that each of these sensors has a (separate) movement profile, ie the function of the distance from time and thus from the angle of rotation of the connecting shaft is measured.
- the angular offset is at least 10 ° and / or a maximum of 180 °.
- the angular offset is preferably at least 30 ° and / or a maximum of 150 °. In practice, an angular offset of around 90 ° is advisable.
- the radial runout is measured in the area of the drive train that rotates centrally, preferably on the last cylindrical part of the rotating train (viewed from the drive side) that (still) rotates centrally.
- this centrally rotating cylindrical part or part with a circular diameter is referred to as a connecting shaft.
- this connecting shaft is connected to the coupling rod and consequently the part that no longer rotates centrically.
- the sensor or sensors are preferably arranged between the drive-side end of the connecting shaft and a coupling-side shaft seal, for example a mechanical seal, in relation to the axial extent of the pump.
- a coupling-side shaft seal for example a mechanical seal
- connection housing between the pump housing or suction housing and the drive, the connection shaft being arranged at least in some areas in this connection housing.
- a connection housing can be designed as a lantern or as a bearing bracket.
- the sensor or sensors are preferably in or on this connection housing, i. H. arranged in or on the lantern or the bearing bracket and particularly preferably attached. From a structural point of view, it is possible to install the sensors in the cover plates on the lantern or the bearing bracket.
- the connection housing can be a housing that is open in some areas, the openings of which can be closed with one or more cover plates.
- the sensors can be connected to such cover plates.
- the sensor or sensors can, however, also be connected to permanently installed parts of the connection housing.
- the eccentric screw pump according to the invention enables early detection of wear on bearings, guides and / or joints in a simple manner. This allows maintenance work or maintenance measures or repairs to be better planned. Unscheduled downtimes can be reduced or avoided, so that system availability increases.
- the detection according to the invention is characterized by a very low susceptibility to failure. In particular, it is less susceptible to disturbances in the vicinity of the pump than, for example, vibration measurements. While vibration measurements, for example, also react to malfunctions that can be caused by stator wear, the inventive measurement of the concentricity deviation in the area of a centrically rotating part enables a targeted and uninfluenced detection of concentricity deviations.
- the invention relates not only to the eccentric screw pump itself, but also to a method for operating such an eccentric screw pump. According to the invention, a movement profile of the described sensor
- Connecting shaft determined by determining or measuring the distance between the (circular or cylindrical surface) of the connecting shaft and the sensor. According to the invention, monitoring of possible concentricity deviations is consequently carried out with the sensor according to the invention during the operation of the eccentric screw pump.
- a plurality of sensors can preferably be arranged in different angular positions; H. at least two sensors are arranged distributed over the circumference of the connecting shaft.
- the determined or measured values i. H. the values measured with the sensor or with the sensors (e.g. distance values that represent a concentricity deviation) are compared with previously stored reference values and that a message (error message) is generated and / or displayed and / or transmitted if a specified deviation is exceeded.
- a message error message
- a combination with a pump control can also take place, so that the pump is operated and / or switched off as a function of the measured values or a comparison of the measured values with stored reference values.
- the monitoring is used for early detection of damage, e.g. joint damage or bearing damage, so that later maintenance work can be better planned so that immediate feedback to the pump control is not required.
- Wear on joints and bearings or guides also means, among other things, wear in the joints with which the coupling rod
- FIG. 2 shows an enlarged section of the object according to FIG. 1
- FIG. 3 shows a modified embodiment of an eccentric screw pump in a simplified side view
- FIG. 4 shows a detail from the object according to FIG. 3 in a perspective illustration.
- the figures each show an eccentric screw pump which, in its basic structure, has a stator 1, a rotor 2 rotating in the stator 1, and a drive 3 for the rotor 2.
- a pump housing 4, which is referred to as the suction housing 4, is connected to the stator 1 (for example on the suction side).
- a housing part connected to the stator 1 at the opposite end of the stator 1 (for example on the pressure side) is referred to as a connecting piece or pressure piece 5.
- the pump housing 4 has an inlet opening 6 (or, depending on the operating direction, outlet opening), via which, for example, the medium to be conveyed is supplied, which is supplied by the
- the drive 3 is equipped with an output shaft (not shown) which is connected to a connecting shaft 9.
- This connecting shaft 9 is designed as a stub shaft 9 in the exemplary embodiment.
- the rotor 2 is connected to the connecting shaft 9 via a rigid coupling rod 10, the coupling rod 10 being connected to the connecting shaft 9 via a drive-side joint 11 and to the rotor 2 via a rotor-side joint 12, so that the coupling rod 10 and the Joints 11, 12, the eccentric movement of the rotor 2 and the rotor end 7 is made possible.
- the drive consequently works on the connecting shaft 9, which rotates centrally about an axis R under ideal conditions.
- the eccentric movement of the rotor end 7 is generated via the coupling rod 10.
- the (elastic) coupling rod can also be designed in one piece with the rotor and consequently form one end of the rotor.
- embodiments are generally also covered in which the coupling rod is provided with one or more conveying devices, e.g. with a screw that can be designed as a hollow screw or a full screw.
- Such coupling rods, which carry a screw are implemented, for example, in the form of funnel pumps in eccentric screw pumps.
- Such an embodiment is also not shown in the figures. However, the explanations in the description of the figures relate equally to the embodiments mentioned, which are not shown.
- connection housing 14 is arranged between the pump housing 4 and the drive 3. In the embodiment according to FIGS. 1 and 2, this connection housing 14 is designed as a so-called lantern.
- the connecting shaft 9 is at least partially in this connecting
- the connecting shaft 9 is sealed with a shaft seal 13, which can be designed as a mechanical seal, for example.
- At least one sensor 15, 16 is arranged in the area of the connecting shaft 9 for detecting or measuring a run-out deviation, which determines a movement profile of the connecting shaft 9 in a predetermined angular position of the connecting shaft 9 by determining the distance between the surface of the (cylindrical) connecting shaft 9 and the sensor 15, 16 is measured.
- two sensors 15, 16 are provided, which are arranged in different angular positions offset from one another by an angular offset.
- the angular offset is approximately 90 °.
- the sensors 15, 16 are designed, for example, as contactless, inductive proximity sensors.
- the connecting shaft 9 - driven by the drive 3 - rotates centered around its axis of rotation R. Since it has a circular cross-section, the distance between the surface and the fixedly positioned sensor 15, 16 does not change during the rotation, so that the distance can be measured depending on the time and consequently on the angular position of the shaft 9 leads to a constant signal. In practice, however, there is a radial runout depending on the state of wear of various components of the pump. A radial runout means that the sensor 15, 16 measures a different distance for different angular positions of the connecting shaft during operation.
- an error message is generated and / or displayed and / or transmitted.
- a visual display (not shown) can be provided on the pump.
- acoustic signals can also be generated. The signal can also be transmitted to a pump control and the display can take place via the control.
- the supply of the sensors and / or the evaluation of the signals can also take place in a pump control (e.g. in a PLC control).
- Fig. 1 shows an embodiment of an eccentric screw pump in which the connecting housing 14 is designed as a so-called lantern
- Fig. 2 shows a modified embodiment of an eccentric screw pump in which the connecting housing 14 is designed as a bearing bracket. In particular in FIG.
- the two sensors 15, 16 offset by 90 ° can be seen in the area of the bearing block 14, which detect or monitor a concentricity deviation of the (not recognizable) connecting shaft 9 (stub shaft).
- Detachable covers, e.g. cover plates 8, to which e.g. a sensor 16 can be attached, can be seen on the housing 14.
- the sensor 15 is attached to a fixed part of the housing 14.
- the drive 3 is not explicitly shown in the embodiment according to FIGS. It can be connected to the shaft journal 17.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019130981.6A DE102019130981A1 (de) | 2019-11-15 | 2019-11-15 | Exzenterschneckenpumpe |
PCT/EP2020/080251 WO2021094087A1 (de) | 2019-11-15 | 2020-10-28 | Exzenterschneckenpumpe |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3973185A1 true EP3973185A1 (de) | 2022-03-30 |
Family
ID=73040057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20800069.5A Pending EP3973185A1 (de) | 2019-11-15 | 2020-10-28 | Exzenterschneckenpumpe |
Country Status (5)
Country | Link |
---|---|
US (1) | US11841017B2 (de) |
EP (1) | EP3973185A1 (de) |
CN (1) | CN114341497B (de) |
DE (1) | DE102019130981A1 (de) |
WO (1) | WO2021094087A1 (de) |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5679894A (en) * | 1993-05-12 | 1997-10-21 | Baker Hughes Incorporated | Apparatus and method for drilling boreholes |
US6358027B1 (en) * | 2000-06-23 | 2002-03-19 | Weatherford/Lamb, Inc. | Adjustable fit progressive cavity pump/motor apparatus and method |
DE202005005989U1 (de) | 2005-04-13 | 2005-06-16 | Deutsche Gleis- Und Tiefbau Gmbh | Vorrichtung zur Halterung von Kabeln oder Kabelbündeln an Bauelementen |
DE102005019063B3 (de) * | 2005-04-23 | 2006-11-09 | Netzsch-Mohnopumpen Gmbh | Verfahren zum Betreiben einer Exzenterschneckenpumpe |
DE202005008989U1 (de) * | 2005-06-07 | 2005-08-11 | Seepex Gmbh + Co Kg | Exzenterschneckenpumpe |
BRPI0815403A2 (pt) | 2007-08-17 | 2015-02-03 | Seepex Gmbh | Bomba de parafuso excêntrico com estator dividido |
KR101629979B1 (ko) * | 2008-07-14 | 2016-06-13 | 에드워즈 가부시키가이샤 | 진공 펌프 |
DE102009056119A1 (de) * | 2008-12-18 | 2010-07-01 | Peiker Acustic Gmbh & Co. Kg | Messanordnung zur Verschleißbestimmung, insbesondere an einer Schneckenpumpe |
JP5461918B2 (ja) | 2009-08-19 | 2014-04-02 | 株式会社ディスコ | 加工廃液処理装置 |
DE102010037440B4 (de) * | 2010-09-09 | 2014-11-27 | Seepex Gmbh | Exzenterschneckenpumpe |
JP2013180956A (ja) | 2012-02-29 | 2013-09-12 | Sunstar Engineering Inc | 殺菌剤組成物 |
EP2882964A2 (de) * | 2012-06-07 | 2015-06-17 | Weatherford/Lamb, Inc. | Tachometer für bohrlochmotor |
DE102014112552B4 (de) * | 2014-09-01 | 2016-06-30 | Seepex Gmbh | Exzenterschneckenpumpe |
KR20170068496A (ko) * | 2014-10-07 | 2017-06-19 | 액세스 비지니스 그룹 인터내셔날 엘엘씨 | 개인용 제형 디바이스 |
DE102015112248A1 (de) * | 2015-01-29 | 2016-08-04 | Netzsch Pumpen & Systeme Gmbh | Exzenterschneckenpumpe und Verfahren zum Anpassen des Betriebszustands einer Exzenterschneckenpumpe |
JP6941337B2 (ja) * | 2016-08-05 | 2021-09-29 | 兵神装備株式会社 | 軸受部材摩耗検出装置及び回転機器 |
DE102016117910B4 (de) * | 2016-09-22 | 2018-10-04 | Seepex Gmbh | Pumpensystem mit einer Exzenterschneckenpumpe |
DE102016121581B4 (de) * | 2016-11-10 | 2018-07-26 | Seepex Gmbh | Exzenterschneckenpumpe |
CN106812694B (zh) * | 2017-03-23 | 2018-10-16 | 上海工程技术大学 | 三螺杆泵排出腔从动螺杆的径向位移的检测装置和方法 |
DE102018102640A1 (de) * | 2018-02-06 | 2019-08-08 | Seepex Gmbh | Exzenterschneckenpumpe |
DE102020111386A1 (de) * | 2020-04-27 | 2021-10-28 | Vogelsang Gmbh & Co. Kg | Zustandserfassung an Exzenterschneckenpumpen |
-
2019
- 2019-11-15 DE DE102019130981.6A patent/DE102019130981A1/de active Pending
-
2020
- 2020-10-28 CN CN202080060764.3A patent/CN114341497B/zh active Active
- 2020-10-28 EP EP20800069.5A patent/EP3973185A1/de active Pending
- 2020-10-28 US US17/619,877 patent/US11841017B2/en active Active
- 2020-10-28 WO PCT/EP2020/080251 patent/WO2021094087A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
DE102019130981A1 (de) | 2021-05-20 |
CN114341497A (zh) | 2022-04-12 |
US20220356877A1 (en) | 2022-11-10 |
WO2021094087A1 (de) | 2021-05-20 |
US11841017B2 (en) | 2023-12-12 |
CN114341497B (zh) | 2024-06-11 |
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