EP4189244A1 - Method for operating a conveyor having an eccentric screw pump for conveying viscous construction materials - Google Patents
Method for operating a conveyor having an eccentric screw pump for conveying viscous construction materialsInfo
- Publication number
- EP4189244A1 EP4189244A1 EP21772694.2A EP21772694A EP4189244A1 EP 4189244 A1 EP4189244 A1 EP 4189244A1 EP 21772694 A EP21772694 A EP 21772694A EP 4189244 A1 EP4189244 A1 EP 4189244A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- eccentric screw
- screw pump
- pressure
- pump
- comparison variable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 7
- 239000004035 construction material Substances 0.000 title abstract description 3
- 230000010349 pulsation Effects 0.000 claims description 19
- 239000004566 building material Substances 0.000 claims description 18
- 230000002250 progressing effect Effects 0.000 claims description 18
- 238000011017 operating method Methods 0.000 claims description 12
- 230000002950 deficient Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
-
- 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
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw 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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—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
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/19—Temperature
-
- 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
- F04C2270/21—Pressure difference
- F04C2270/215—Controlled or regulated
Definitions
- the invention relates to an operating method for a conveying device with an eccentric screw pump for conveying viscous building materials according to the preamble f f of claim 1 .
- WO 2019/215242 A1 discloses a method for operating a conveying device for conveying a free-flowing building material with an eccentric screw pump, in which the actual pressure is regulated.
- This operating method does not make it possible to differentiate between a pressure build-up against a closed gun and a delivery against an open gun.
- a so-called slip effect occurs, which causes the building material to be tumbled through in the eccentric screw pump, so that the material properties of the building material being conveyed are changed and the eccentric screw pump suffers increased wear, undesired heating and has unnecessary energy consumption.
- the object of the invention is to propose an operating method for a conveying device with an eccentric screw pump for conveying viscous building materials, by means of which a pressure build-up against the closed gun can be detected and accordingly a pressure build-up against the closed gun can be largely avoided.
- This problem is solved by the features of claim 1 .
- Advantageous and expedient developments are specified in the dependent claims.
- the operating method according to the invention for a conveying device with an eccentric screw pump for conveying viscous building materials comprises the steps:
- a pulsation pattern occurring during pumping operation in the eccentric screw pump is continuously recorded as a characteristic and this is continuously compared with a first pulsation pattern stored as a first comparison variable and/or with a second pulsation pattern stored as a second comparison variable. In comparison with the stored pulsation patterns, it can be reliably determined whether the progressing cavity pump is building up pressure against a closed gun or pumping against an open gun.
- a temperature of the progressing cavity pump and in particular a temperature of a rotor of a rotor-stator unit of the progressing cavity pump is continuously recorded as a parameter and that this is continuously compared with the temperature stored as the first comparison variable and/or with the temperature stored as the second comparison variable .
- the pulsation pattern can be easily determined using the technology installed in the conveying device.
- Switching off the eccentric screw pump is understood in the sense of the invention as an automatic switching off of the BLDC electric motor, which drives the eccentric screw pump with the interposition of a gear.
- a pressure prevailing at an outlet of the eccentric screw pump is understood to mean a pressure which is detected in a conveying section following the eccentric screw pump.
- the first or second stored pulsation pattern descriptive data set or the first or second stored pulsation pattern descriptive formula understood.
- the respective data set or the respective formula describes a pulsation pattern which is determined on the basis of pressure values recorded with a pressure sensor and/or which is determined on the basis of speed values of a BLDC electric motor driving the progressing cavity pump and/or which is based on the Is determined on the basis of current strength values, which are typical in particular for an applied torque, of a BLDC electric motor driving the eccentric screw pump.
- a detected parameter within the meaning of the invention is also understood as a data set describing a detected pulsation pattern or a formula describing the detected pulsation pattern.
- Figure 1 a perspective view of a conveyor device
- FIG. 2 a sectional side view of the conveying device shown in FIG.
- Figure 3 a schematic flowchart of a
- FIG. 1 shows a perspective view of a conveying device 1 for carrying out the method according to the invention.
- FIG. 2 shows the conveyor device 1 known from FIG. 1 in a partially sectioned side view.
- the conveying device 1 comprises an eccentric screw pump 2 , a drive unit 3 and a control device 4 .
- the progressing cavity pump 2 comprises a rotor-stator unit 5 with an upstream conveyor screw 5a and an outlet 6 .
- the conveying device 1 comprises a conveying section 7 shown schematically, which is connected to the outlet 6 of the rotor-stator unit 5 .
- the conveyor section 7 comprises a hose 7a and a dispensing device 7b, by means of which the ejection of viscous building material BM can be activated and deactivated and preferably also metered.
- the conveying device 1 comprises a first pressure sensor 8 and a characteristic variable detection device 9 .
- the pressure sensor 8 detects a pressure under which the building material BM is at the outlet 6 of the rotor-stator unit 5 .
- the characteristic variable detection device 9 includes a speed sensor 10, by means of which a speed of an electric motor 11 of the drive unit 3 of the conveyor device 1 can be detected.
- the electric motor 11 is designed as a brushless direct current motor, a so-called BLDC electric motor 12
- the speed sensor 10 includes, according to one embodiment, at least one HALL sensor installed directly on the BLDC electric motor 12 .
- the drive unit 3 also includes a gear 13 which is installed between the drive 11 and the eccentric screw pump 2 .
- On the conveyor is a shown schematically
- Temperature sensor 14 installed. Here, a temperature of a rotor 5b of the rotor-stator unit 5 is detected by the temperature sensor 14 .
- FIG. 3 shows a simplified flow chart of an operating method BV.
- the BV operating procedure includes the following steps:
- the pressure of the viscous building material at an outlet of the eccentric screw pump is recorded when the eccentric screw pump is running and the eccentric screw pump is automatically switched off if the pressure exceeds an upper limit value stored in the control device;
- a parameter of the running eccentric screw pump is recorded and the parameter is compared with a first comparison parameter stored in the control device, which is characteristic of operation when the dispensing device is open, and/or the parameter is compared with a second parameter in the control device stored comparison variable, which is characteristic of operation when the dispensing device is closed, and switching off the eccentric screw pump if operation when the dispensing device is closed is detected; if operation of the progressing cavity pump is continued, the aforementioned steps are run through again and herewith the pressure monitoring program DUP and the parameter monitoring program KUP; if the progressing cavity pump is switched off as a result of the aforementioned steps, a pressure prevailing at the outlet of the progressing cavity pump is monitored with a delivery monitoring program AUP and a low-pressure monitoring program NUP in such a way that operation of the progressing cavity pump is restarted and the aforementioned steps are run through again if o either it is determined by the delivery monitoring program AUP that the pressure drops by opening a delivery device
- the operating method is supplemented by a wear monitoring program VUP such that after an interim shutdown of the eccentric screw pump 2, a final shutdown takes place if the pressure within a third time interval a third pressure difference drops, the third time interval and the third pressure difference depending on the conveying device 1 are selected in such a way that they are typical of a rotor-stator unit 5 that is defective due to wear.
- the conveyor device 1 can also be operated in such a way that a pulsation pattern occurring in the progressing cavity pump 2 is continuously recorded as a parameter by the control device 5 and this is continuously compared by the control device 5 with a first pulsation pattern stored as a first comparison variable in the control device 5 and/or with a second pulsation pattern stored as a second comparison variable in the control device.
- the conveying device can also be operated in such a way that the control device 5 continuously records a temperature of the eccentric screw pump 2 and in particular a temperature of a rotor 5b of a rotor-stator unit 5 of the eccentric screw pump 2 as a parameter and continuously uses this as the first comparison variable stored in the control device 5 and/or is compared with the temperature stored in the control device 5 as a second comparison variable.
- Reference character list :
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020123120.2A DE102020123120A1 (en) | 2020-09-04 | 2020-09-04 | Operating method for a conveying device with an eccentric screw pump for conveying viscous building materials |
PCT/EP2021/073721 WO2022048998A1 (en) | 2020-09-04 | 2021-08-27 | Method for operating a conveyor having an eccentric screw pump for conveying viscous construction materials |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4189244A1 true EP4189244A1 (en) | 2023-06-07 |
EP4189244B1 EP4189244B1 (en) | 2024-06-05 |
Family
ID=77801662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21772694.2A Active EP4189244B1 (en) | 2020-09-04 | 2021-08-27 | Method for operating a conveyor having an eccentric screw pump for conveying viscous construction materials |
Country Status (5)
Country | Link |
---|---|
US (1) | US11885332B2 (en) |
EP (1) | EP4189244B1 (en) |
CN (1) | CN116601389A (en) |
DE (1) | DE102020123120A1 (en) |
WO (1) | WO2022048998A1 (en) |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19649766C1 (en) * | 1996-11-30 | 1998-04-09 | Netzsch Mohnopumpen Gmbh | Method of temperature-dependent operation of e.g. helical rotor type sludge pump |
US6099264A (en) * | 1998-08-27 | 2000-08-08 | Itt Manufacturing Enterprises, Inc. | Pump controller |
JP2002316081A (en) * | 2001-04-20 | 2002-10-29 | Heishin Engineering & Equipment Co Ltd | Fixed quantity coating and filling system for sealing agent or the like |
GB2441258B (en) * | 2005-05-18 | 2010-01-27 | Komatsu Mfg Co Ltd | Hydraulic control device for construction machinery |
US7931447B2 (en) | 2006-06-29 | 2011-04-26 | Hayward Industries, Inc. | Drain safety and pump control device |
NZ589998A (en) * | 2010-10-12 | 2011-10-28 | Ghd Pty Ltd | A pump unit for a pressure sewerage system wherein the pump operates in predetermined time sequence |
US8482238B2 (en) * | 2010-11-30 | 2013-07-09 | Caterpillar Inc. | System and method for estimating a generator rotor temperature in an electric drive machine |
US8666632B2 (en) * | 2011-04-20 | 2014-03-04 | Hamilton Sundstrand Corporation | Distributed aircraft engine fuel system |
JP6040399B2 (en) | 2011-10-17 | 2016-12-07 | 兵神装備株式会社 | Remote monitoring system for uniaxial eccentric screw pump |
CN103486026B (en) | 2013-08-26 | 2016-08-03 | 青岛拓极采矿服务有限公司 | A kind of screw pump safety interlock control system and control method |
DE102013018607A1 (en) * | 2013-11-07 | 2015-05-07 | Schwing Gmbh | Slurry pump with reversible feed unit |
DE102014116779B4 (en) | 2014-11-17 | 2016-07-21 | Pumpenfabrik Wangen Gmbh | System for conveying viscous media and method for conveying a viscous medium with such a system |
CN107382011B (en) | 2017-07-31 | 2020-11-03 | 杭州绿夏环境科技有限公司 | Sludge filter-pressing treatment system and sludge filter-pressing treatment method |
DE102018106228A1 (en) * | 2018-03-16 | 2019-09-19 | Seepex Gmbh | Plant for conveying pasty material |
DE102018111120A1 (en) | 2018-05-09 | 2019-11-14 | J. Wagner Gmbh | Method for operating a conveying device and conveying device |
-
2020
- 2020-09-04 DE DE102020123120.2A patent/DE102020123120A1/en active Pending
-
2021
- 2021-08-27 WO PCT/EP2021/073721 patent/WO2022048998A1/en active Application Filing
- 2021-08-27 US US18/043,825 patent/US11885332B2/en active Active
- 2021-08-27 EP EP21772694.2A patent/EP4189244B1/en active Active
- 2021-08-27 CN CN202180072404.XA patent/CN116601389A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
EP4189244B1 (en) | 2024-06-05 |
CN116601389A (en) | 2023-08-15 |
US20230235738A1 (en) | 2023-07-27 |
DE102020123120A1 (en) | 2022-03-10 |
WO2022048998A1 (en) | 2022-03-10 |
US11885332B2 (en) | 2024-01-30 |
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