EP2696989A1 - Membranpumpe und verfahren zum fördern von feinkörnigen pulver mit hilfe einer membranpumpe - Google Patents
Membranpumpe und verfahren zum fördern von feinkörnigen pulver mit hilfe einer membranpumpeInfo
- Publication number
- EP2696989A1 EP2696989A1 EP12715874.9A EP12715874A EP2696989A1 EP 2696989 A1 EP2696989 A1 EP 2696989A1 EP 12715874 A EP12715874 A EP 12715874A EP 2696989 A1 EP2696989 A1 EP 2696989A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- diaphragm pump
- powder
- delivery chamber
- pump
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/047—Pumps having electric drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
- B05B7/1404—Arrangements for supplying particulate material
- B05B7/144—Arrangements for supplying particulate material the means for supplying particulate material comprising moving mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
- B05B7/1404—Arrangements for supplying particulate material
- B05B7/1459—Arrangements for supplying particulate material comprising a chamber, inlet and outlet valves upstream and downstream the chamber and means for alternately sucking particulate material into and removing particulate material from the chamber through the valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0054—Special features particularities of the flexible members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0081—Special features systems, control, safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/50—Presence of foreign matter in the fluid
- F04B2205/501—Presence of foreign matter in the fluid of solid particles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2210/00—Working fluid
- F05B2210/10—Kind or type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
Definitions
- the invention relates to a method for conveying fine-grained powders with the aid of a diaphragm pump, which comprises a delivery chamber enclosing a working volume, at least one deflectable membrane, which is in a suction position and a
- Pressure position can be brought, and one on a suction side of the diaphragm pump
- Processes for conveying fine-grained powders are required, for example, for feeding metered quantities of fine-grained powders for plasma coating processes. Powder deposits and agglomerations of the powder in the
- Nanometer edge length filled has a surface area of 2,400 m 2 .
- the large increase in surface forces hinders the promotion of such small particles.
- DE 44 23 197 discloses a powder pump for powder for spray coating of articles in a rod-like elongated shape. On one end face, the Powder pump on a Pulveransaugö réelle, is sucked through the powder from an open-topped powder container and transported through an inner tube of the powder pump to a consumer. The promotion itself is done by generating a vacuum in the powder pump. The vacuum is created with an injector nozzle located near the powder suction port.
- diaphragm pumps for conveying liquids or gases are known from the prior art.
- the working space is separated from the drive by a deflectable membrane. Due to this separation, the drive is shielded from harmful influences of the pumped medium.
- the oscillating deflection of the membrane causes in a suction stroke in the fully deflected suction position
- Exhaust valve arranged.
- the pumped medium is sucked in via the inlet valve during the suction stroke of the diaphragm and expelled through the outlet valve during the pressure stroke.
- Flow rate in the working volume of the pumping chamber of the diaphragm pump is not sufficient to eject the entire amount of powder through the exhaust valve.
- Diaphragm pump which initially reduce the suction power and finally the suction power
- Clog diaphragm pump Clog diaphragm pump.
- Powder agglomerates in particular, can form in the case of very fine-grained powders, which impede the delivery of the powder or block the membrane pump.
- a blockage of the diaphragm pump can not be canceled by an increase in the pump power. Rather, it is necessary to open the delivery chamber and eliminate the blockage.
- Another influence on the formation of deposits has the geometric design of the delivery chamber. Especially in areas with less
- the invention is based on the object to propose a membrane pump with which a promotion of fine powders, especially non-flowable powder with particle sizes of 0.01 ⁇ to 100 ⁇ is possible.
- a method for promoting such powders is based on the object to propose a membrane pump with which a promotion of fine powders, especially non-flowable powder with particle sizes of 0.01 ⁇ to 100 ⁇ is possible.
- This object is achieved in a diaphragm pump of the type mentioned above in that a gas supply for introducing a gas is arranged in the delivery chamber to the delivery chamber.
- the inlet valve of the diaphragm pump acts as a check valve, so that the supplied gas, in particular air, can only flow out of the outlet valve in the conveying direction of the diaphragm pump.
- the additionally introduced gas causes optimal working conditions to prevail in the working volume of the membrane pump and prevents powder deposits in the pumping chamber.
- the maximum amount of additionally introduced gas is limited by the suction power of the diaphragm pump during the suction stroke. If the maximum quantity is exceeded, the diaphragm pump can no longer suck in powder or powder / gas mixture via the pressure-controlled inlet valve and the inlet valve remains closed.
- the introduction of the gas into the delivery chamber causes the inlet valve closes earlier and that sucked into the working space powder or powder /
- Gas mixture is discharged together with the additionally introduced into the pumping chamber gas completely through the exhaust valve.
- a pulsation-poor powder delivery for continuous follow-up processes is made possible if the gas supply has a compressor for generating a constant volume flow of the gas.
- a particularly effective cleaning of the delivery chamber with the aid of the supplied gas is achieved when the gas supply has a compressor for generating a pulsating volume flow of the gas.
- the gas supply preferably has a compressor for generating a constant pressure of the supplied gas.
- the gas is preferably introduced on a wall of the delivery chamber via an inlet.
- the inlet can be designed as a passage in the wall or else as a nozzle.
- the inlet when the inlet is designed as a nozzle, the inlet can expediently be oriented in such a way that gas is applied to regions of the pumping chamber in which deposits of the pumped powder can easily form due to the flow conditions.
- the membrane pump according to the invention is particularly suitable for the promotion of very fine-grained powder. However, it can also be used to advantage
- Figure 1 is a schematic representation of a membrane pump according to the invention and for explaining the method according to the invention.
- the membrane pump 1 comprises a delivery chamber 2 enclosing a working volume VT or V 2 , which is delimited on one side by a deflectable membrane 3.
- the membrane 3 is in a suction position 4 and a pressure position 5 can be brought.
- the membrane 3 is in the suction position shown in solid line 4.
- the oscillating deflection movement 6 is generated by means of an eccentric drive comprising an electric motor 7 and a connecting rod 8.
- an inlet valve 1 1 and an outlet valve 12 is arranged on a pressure side of the diaphragm pump 1. Both the intake valve 1 1 and the exhaust valve 12 are characterized by that of the
- Diaphragm pump 1 conveyed powder / gas mixture 13 actuated pressure controlled, wherein the inlet valve 1 1 opens the suction stroke of the diaphragm 3 in the suction position 4 and closes the pressure stroke 5 during the pressure stroke, while the exhaust valve 12 closes during the suction stroke of the diaphragm 3 and opens during the pressure stroke.
- a gas supply 15 for introducing a gas 16, in particular air, is arranged in the delivery chamber 2.
- the gas supply 15 comprises a nozzle 17 as the wall 14 passing through the injector, with which the gas is selectively introduced into the delivery chamber 2 to dissolve powder accumulations and the powder / gas mixture 13 to impose an additional amount of gas.
- the gas supply 15 further comprises a schematically illustrated compressor 18, which is connected via a line to the nozzle 17. The compressor 18 generates depending on the composition of the powder / gas mixture to be conveyed 13 and / or in
- a constant pressure 19 of the gas 16 a constant flow 20 of the gas 16 or a pulsating flow 21 of the gas 16, which is introduced via the nozzle 17 in the delivery chamber 2.
- a volume flow in a range of 1 l / min - 50 l / min in the delivery chamber. 2
- the oscillation frequency of the membrane 3 is for conveying fine powders preferably in a frequency range of 10 Hz to 200 Hz at a maximum working volume in a range of 0.1 to 20 ml.
- the high frequencies of the diaphragm pump 1 favor the continuous
- each diaphragm pump 1 is connected at its suction side 9 via a shortest possible suction line with a suction for sucking powder from a powder supply.
- a length of the suction line of 0.01 m to 1 m, preferably 0.01 m to 0.5 m has been found, while the length of the pressure line for pulsation promotion is preferably at least by a factor of 10 longer.
- suction and discharge lines with an inner diameter of 2.5 mm could not pulsation Conveying can be achieved with pressure line lengths of 3 m, while good results were achieved with pressure line lengths of more than 1 0 m.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Air Transport Of Granular Materials (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011017277 | 2011-04-15 | ||
DE102011100378 | 2011-05-03 | ||
DE102011052432A DE102011052432A1 (de) | 2011-04-15 | 2011-08-05 | Membranpumpe und Verfahren zum Fördern von feinkörnigen Pulvern mit Hilfe einer Membranpumpe |
PCT/EP2012/055613 WO2012139898A1 (de) | 2011-04-15 | 2012-03-29 | Membranpumpe und verfahren zum fördern von feinkörnigen pulver mit hilfe einer membranpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2696989A1 true EP2696989A1 (de) | 2014-02-19 |
EP2696989B1 EP2696989B1 (de) | 2019-11-20 |
Family
ID=46935640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12715874.9A Active EP2696989B1 (de) | 2011-04-15 | 2012-03-29 | System und verfahren zum fördern von feinkörnigen pulver mit hilfe einer membranpumpe |
Country Status (7)
Country | Link |
---|---|
US (1) | US9347444B2 (de) |
EP (1) | EP2696989B1 (de) |
JP (1) | JP6143741B2 (de) |
KR (1) | KR20140007938A (de) |
CN (1) | CN103492083B (de) |
DE (1) | DE102011052432A1 (de) |
WO (1) | WO2012139898A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB201505551D0 (en) * | 2015-03-31 | 2015-05-13 | Finishing Brands Uk Ltd | High pressure fluid system |
DE102016201182A1 (de) | 2016-01-27 | 2017-07-27 | Siemens Aktiengesellschaft | Membranpumpe mit Staubansaugung von unten |
DE102016216016A1 (de) | 2016-08-25 | 2018-03-15 | Siemens Aktiengesellschaft | Herstellung eines porösen Aluminiumfilters für eine Membranpumpe |
DE102016216012A1 (de) | 2016-08-25 | 2018-03-01 | Siemens Aktiengesellschaft | Membranpumpe mit porösem, gewölbtem Aluminiumfilter |
DE102016216006A1 (de) | 2016-08-25 | 2018-03-01 | Siemens Aktiengesellschaft | Doppelmembran für eine Staubpumpe |
CN106395385A (zh) * | 2016-11-11 | 2017-02-15 | 航天长征化学工程股份有限公司 | 一种隔膜式粉煤加压输送系统及输送方法 |
KR102357434B1 (ko) | 2020-02-06 | 2022-02-04 | 박지현 | 나선형 플렉시블 호스를 이용한 분말펌프 |
KR102252028B1 (ko) | 2020-06-09 | 2021-05-14 | 박지현 | 저동력 분말 공급장치 |
KR102514634B1 (ko) | 2020-12-28 | 2023-03-27 | 박지현 | 휴대용 분말 펌프 |
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-
2011
- 2011-08-05 DE DE102011052432A patent/DE102011052432A1/de not_active Ceased
-
2012
- 2012-03-29 CN CN201280016689.6A patent/CN103492083B/zh not_active Expired - Fee Related
- 2012-03-29 KR KR1020137030185A patent/KR20140007938A/ko active Search and Examination
- 2012-03-29 WO PCT/EP2012/055613 patent/WO2012139898A1/de active Application Filing
- 2012-03-29 EP EP12715874.9A patent/EP2696989B1/de active Active
- 2012-03-29 JP JP2014504247A patent/JP6143741B2/ja not_active Expired - Fee Related
-
2013
- 2013-10-15 US US14/053,955 patent/US9347444B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2012139898A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2014511972A (ja) | 2014-05-19 |
CN103492083A (zh) | 2014-01-01 |
DE102011052432A1 (de) | 2012-10-18 |
US20140037466A1 (en) | 2014-02-06 |
KR20140007938A (ko) | 2014-01-20 |
WO2012139898A1 (de) | 2012-10-18 |
US9347444B2 (en) | 2016-05-24 |
JP6143741B2 (ja) | 2017-06-07 |
WO2012139898A4 (de) | 2012-12-20 |
CN103492083B (zh) | 2016-03-30 |
EP2696989B1 (de) | 2019-11-20 |
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