EP0131120B1 - Verfahren und Vorrichtung zum feinsten Versprühen von Suspensionen - Google Patents

Verfahren und Vorrichtung zum feinsten Versprühen von Suspensionen Download PDF

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Publication number
EP0131120B1
EP0131120B1 EP84105700A EP84105700A EP0131120B1 EP 0131120 B1 EP0131120 B1 EP 0131120B1 EP 84105700 A EP84105700 A EP 84105700A EP 84105700 A EP84105700 A EP 84105700A EP 0131120 B1 EP0131120 B1 EP 0131120B1
Authority
EP
European Patent Office
Prior art keywords
pressurised gas
nozzle opening
nozzle
liquid
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.)
Expired
Application number
EP84105700A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0131120A1 (de
Inventor
René Egli
Hans-Rudolf Staub
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lonza AG
Original Assignee
Lonza AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lonza AG filed Critical Lonza AG
Priority to AT84105700T priority Critical patent/ATE25598T1/de
Publication of EP0131120A1 publication Critical patent/EP0131120A1/de
Application granted granted Critical
Publication of EP0131120B1 publication Critical patent/EP0131120B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/40—Filters located upstream of the spraying outlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/52—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
    • B05B15/522—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using cleaning elements penetrating the discharge openings
    • B05B15/5223—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using cleaning elements penetrating the discharge openings the cleaning element, e.g. a needle, and the discharge opening being movable relative to each other in a direction substantially parallel to the flow of liquid or other fluent material through said opening
    • B05B15/5225—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using cleaning elements penetrating the discharge openings the cleaning element, e.g. a needle, and the discharge opening being movable relative to each other in a direction substantially parallel to the flow of liquid or other fluent material through said opening the cleaning element being located upstream of the discharge opening or being actuated upstream therefrom
    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B05B7/0475—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber with means for deflecting the peripheral gas flow towards the central liquid flow

Definitions

  • the invention relates to a method and a device for the finest spraying of suspensions in finely divided form, as known from EP-A-0 039 839.
  • a device for spraying disperse systems comprising a spray head with a nozzle opening, an arranged inside the spray head, which can be pushed through the nozzle opening and optionally a between the inlet for the disperse system and the nozzle insert arranged with a scraper device for the sieve insert.
  • a nozzle opening with a minimum diameter of 0.3 mm and a minimum working pressure of 20 bar must be maintained. This means that a certain throughput cannot be undercut.
  • This also means that when spraying, the disperse systems are applied as relatively thick films. It was therefore proposed in European patent application 0 039 839 to spray the disperse system through an air atomizing nozzle.
  • An air atomizer nozzle enables a much better regulation of the spray quantity and is particularly suitable for evenly distributing the smallest quantities of material.
  • the polymers due to their film-forming properties, can adversely affect the effect of the air atomizing nozzle in continuous operation due to running deposits. While the liquid nozzle is pierced by a cleaning needle in the event of blockages, the film-forming polymers can gradually build up deposits and impair the air flow and finally interrupt it.
  • the object of the present invention is to avoid these disadvantages and to propose a method and a device which enables trouble-free continuous operation when spraying polymer-containing suspensions.
  • air is expediently used as the spray gas and water is expediently used as the liquid.
  • Air is generally used primarily for reasons of economy, but it is also possible to use other gases, such as nitrogen, CO 2 , halide hydrocarbon gases or noble gases, alone or in a mixture with one another or in a mixture with air instead of air.
  • gases such as nitrogen, CO 2 , halide hydrocarbon gases or noble gases, alone or in a mixture with one another or in a mixture with air instead of air.
  • water is also used as a liquid.
  • alcohols with 1 to 8 carbon atoms, glycols, glycol ethers or glycol ether esters can also be used as the liquid alone, in a mixture with one another or in a mixture with water.
  • the liquid can also contain fractions of organic, water-soluble oils or an emulsion of oil in water.
  • the liquid can be mixed into the gas in different ways. For example, there is the possibility of evaporating the liquid and having it taken up by the gas stream, or the liquid can be injected into the gas stream.
  • Devices for example metering pumps, pressure vessels with metering, vacuum metering devices, etc., are suitable for this.
  • the compressed gas must be saturated or supersaturated with liquid.
  • oversaturation does not only mean an oversaturated state, but in a broader sense, in particular also the mist, i.e. the liquid in the form of very fine droplets, in the compressed gas.
  • Figure 1 shows an axial section through a first embodiment of the invention.
  • a stamp 4 is arranged in the housing 1, which is equipped with an inlet 2 for the suspension and at the tip of which there is a nozzle opening 3 with a diameter of 1.0 to 4.0 mm.
  • the punch 4 is arranged to be movable in the longitudinal direction and is moved by the piston 5.
  • the piston is controlled pneumatically by the compressed gas connection 11 and 12.
  • a partial flow of the compressed gas forms the compressed gas supply 8 to the air atomizing nozzle.
  • the sieve insert 6 expediently has a cylindrical shape which encloses the side surfaces of the stamp.
  • the sieve insert 6 can be attached to the piston 5.
  • the stripping device 7 is expediently designed as a hollow cylinder which straddles the outer circumference of the sieve insert and is attached to the housing 1, or the stripping device can be embodied in a bushing in the housing 1. Sealing elements can prevent media from penetrating.
  • any entrained, undesirably large particles are retained on the sieve insert.
  • the saturated or supersaturated pressurized gas is pressed through a pressurized gas supply 8, which opens into the spray nozzle 3.
  • a pressurized gas supply 8 which opens into the spray nozzle 3.
  • the saturated or supersaturated compressed gas mixes with the suspension and the suspension is sprayed as a mist.
  • the piston 5 first moves the plunger 4 attached to it in the opening direction, i. H. the punch tip is withdrawn from the nozzle opening and clears the way for the suspension. If the piston is moved in the opposite direction, the punch tip pushes back into the nozzle opening, presses out any dirt and closes the hole nozzle opening.
  • the sieve insert 6 connected to the piston 5 is stripped off during the closing process, the sieve surface being cleaned. In the end position, the entire screen surface is covered by the liner 7 or the stripping device and closes the passage for the suspension. When the piston is withdrawn, the suspension passes through the sieve insert and any excessively large particles and impurities are retained.
  • FIG. 2 shows an axial section through a second expedient embodiment of the invention.
  • a capillary 14 with a diameter of 0.4 to 0.6 mm, preferably 0.5 mm, is arranged in the piston 5, with the capillary 14 and the compressed gas supply in a spray pause via the compressed gas connection 12 8 humidified compressed gas flows into the nozzle opening 3. It is thereby achieved that the compressed gas supply 8 is protected from the flowing back suspension and kept free. Drying of suspension residues is reliably prevented and cleaning of both the fine channels of the compressed gas supply 8 and the nozzle opening 3 is achieved.
  • the device described is used for spraying suspensions which contain, in particular, graphite as a dispersion, larger proportions of polymers, such as alkylene polymers, dispersion auxiliaries and stabilizers, and a liquid, generally water, as the dispersion medium.
  • polymers such as alkylene polymers, dispersion auxiliaries and stabilizers
  • a liquid generally water
  • Such formulations are described in DE-OS-24 50 716 as high-temperature lubricants. In order to be able to use these high-temperature lubricants in non-cutting metal forming, they must be applied to workpieces and / or tools in the most uniform layer and distribution possible.
  • the minimum pressure for the suspension can be reduced close to the ambient pressure, pressures from 0.01 to 15 bar are advantageous. expediently 0.1 to 0.5 bar.
  • the pressure of the gas must be somewhat higher than the pressure in the suspension in order to prevent the suspension from flowing back into the channels of the compressed gas supply 8.

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  • Nozzles (AREA)
EP84105700A 1983-07-06 1984-05-18 Verfahren und Vorrichtung zum feinsten Versprühen von Suspensionen Expired EP0131120B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84105700T ATE25598T1 (de) 1983-07-06 1984-05-18 Verfahren und vorrichtung zum feinsten verspruehen von suspensionen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH370083 1983-07-06
CH3700/83 1983-07-06

Publications (2)

Publication Number Publication Date
EP0131120A1 EP0131120A1 (de) 1985-01-16
EP0131120B1 true EP0131120B1 (de) 1987-03-04

Family

ID=4261639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105700A Expired EP0131120B1 (de) 1983-07-06 1984-05-18 Verfahren und Vorrichtung zum feinsten Versprühen von Suspensionen

Country Status (9)

Country Link
EP (1) EP0131120B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS6022956A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AR (1) AR240734A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) ATE25598T1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1234401A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3462442D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES534043A0 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
YU (1) YU45190B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ZA (1) ZA844449B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005019444A1 (de) * 2005-04-21 2006-10-26 Glatt Gmbh Sprühdüse für eine Wirbelschichteinrichtung

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6139080U (ja) * 1984-08-11 1986-03-12 ジューキ株式会社 自動ミシンの安全装置
JPS6227994A (ja) * 1985-07-31 1987-02-05 ジューキ株式会社 パタ−ンデ−タ入力装置
JPS62109594A (ja) * 1985-11-08 1987-05-20 蛇の目ミシン工業株式会社 組合わせ模様のししゆうデ−タ自動作成方法
JPS62129088A (ja) * 1985-11-29 1987-06-11 蛇の目ミシン工業株式会社 多模様ミシン
JPH0667420B2 (ja) * 1987-02-14 1994-08-31 ブラザー工業株式会社 自動ミシン
DE69523164T2 (de) * 1995-06-27 2002-06-06 Koninklijke Philips Electronics N.V., Eindhoven Verfahren und vorrichtung zum auftrag eines fluids auf eine oberfläche
DE10042325A1 (de) * 2000-08-29 2002-03-14 Alstom Power Nv Zerstäubungsvorrichtung sowie Verfahren zum Zerstäuben einer Flüssigkeit
CA2469784A1 (en) * 2001-12-13 2003-06-19 Rd, Inc. Spraying system for dispersing and disseminating fluids
DE102004029158B3 (de) * 2004-06-17 2006-01-12 Schröder Maschinenbau KG Injektionsvorrichtung
US7572107B2 (en) 2007-04-20 2009-08-11 Adapco, Inc. Ultra low volume chemical delivery system and method
CN111389607B (zh) * 2018-12-27 2022-01-04 广州合成材料研究院有限公司 一种免清洗自动喷涂工作站
CN111889276B (zh) * 2020-06-23 2022-07-22 云南国钛金属股份有限公司 一种熔盐氯化炉氯气喷枪疏通的装置
CN114917746B (zh) * 2022-06-16 2023-03-28 南通恒和环保科技有限公司 一种废气净化塔喷淋装置及废气净化塔

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH612365A5 (en) * 1976-06-21 1979-07-31 Lonza Ag Device for spraying disperse systems
CH622445A5 (en) * 1977-02-24 1981-04-15 Lonza Ag Device for spraying disperse systems
DE2724931A1 (de) * 1976-06-21 1977-12-29 Lonza Ag Vorrichtung zum verspruehen von dispersen systemen
CH647061A5 (de) * 1980-05-13 1984-12-28 Lonza Ag Verfahren und vorrichtung zum verspruehen von dispersen systemen.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005019444A1 (de) * 2005-04-21 2006-10-26 Glatt Gmbh Sprühdüse für eine Wirbelschichteinrichtung
DE102005019444B4 (de) * 2005-04-21 2008-02-28 Glatt Gmbh Sprühdüse für eine Wirbelschichteinrichtung

Also Published As

Publication number Publication date
JPH0450069B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-08-13
AR240734A1 (es) 1990-10-31
CA1234401A (en) 1988-03-22
ZA844449B (en) 1985-02-27
ATE25598T1 (de) 1987-03-15
YU118584A (en) 1987-06-30
EP0131120A1 (de) 1985-01-16
ES8504498A1 (es) 1985-04-16
YU45190B (en) 1992-05-28
DE3462442D1 (en) 1987-04-09
JPS6022956A (ja) 1985-02-05
ES534043A0 (es) 1985-04-16

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