Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K31/00—Actuating devices; Operating means; Releasing devices
  • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
  • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
  • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
  • F16K31/0679—Electromagnet aspects, e.g. electric supply therefor with more than one energising coil
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
  • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
  • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
  • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
  • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
  • B05B1/3053—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the actuating means being a solenoid
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K31/00—Actuating devices; Operating means; Releasing devices
  • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
  • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
  • F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
  • F16K31/082—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet using a electromagnet and a permanent magnet

Definitions

• the invention relates to a spray nozzle for pattern application of paint or the like. or for the precise metering of liquids onto a product, in particular a web, with a membrane-guided nozzle needle closing the nozzle mouthpiece and a magnet system moving the nozzle needle.
• the nozzle needle penetrates the magnet system and is connected to a further membrane above the magnet system, which delimits an upper space containing paint, whereby spaces containing both colors are connected to one another, and that membrane disks are provided for guiding the nozzle needle within the space enclosed by the membranes.
• the spray nozzle according to the invention ensures better guidance of the nozzle needle and it is not necessary to bring about pressure compensation in the space between the two membranes by means of a spring or by compressed air. Any pressure fluctuations have no influence on the opening and closing movement of the nozzle needle.
• the two rubber membranes enclose an air cushion that has a balancing effect on short pressure surges. This does not affect valves that are parallel to a liquid supply.
• the drawing shows a section through the spray nozzle according to the invention.
• the spray nozzle has an outer housing 1, which is closed at one end by a cover 2.
• This cover 2 is firmly connected to the housing 1 by a screw ring 3.
• the housing 1 is provided with a nozzle mouthpiece 6, which is pressed by means of a holder 5 against a flat contact surface 36 of the housing 1. It is advantageous if the housing 1 has an external thread at the lower end, onto which the holder 5 is screwed.
• a magnet system which is composed of two parts. The lower part consists of a pot 12 in which a winding 11 is provided. In the middle, the winding 11 is limited by a permanent magnet 10.
• the upper part of the magnet system has a pot 22, a winding 21 and a permanent magnet 20.
• the two pots 12, 22 are connected to one another via a spacer ring 30.
• the height of this spacer ring 30 defines the distance between the two parts of the magnet system.
• a magnet armature disk 31 which can be constructed from laminated dynamo sheets.
• the magnet system is penetrated by the nozzle needle, which in the present case is made up of three parts 7, 18 and 28.
• the part 7 is connected to the part 18 via a screw insert 8, a spacer sleeve 17 being seen between the parts 7 and 18.
• the parts 18 and 28 of the needle are connected to one another via a screw insert 32.
• the armature disk 31 is rigidly connected to the needle at the junction of the parts 18 and 28.
• a holding ring 23 rests on the pot 22 of the upper magnet system, which can optionally also be firmly connected to the pot 22, e.g. by gluing.
• rings 24, 25 are used, of which at least one, namely the ring 25, carries a singe thread.
• a rubber or plastic membrane is clamped between the screw ring 25 and the ring 24, whereas a membrane disk 34 is clamped between the ring 24 and a shoulder 37 of the holder 23.
• a similar structure is also provided for the lower magnet system.
• a holder rests on the pot 12, into which a ring 15 is screwed and a ring 14 is inserted.
• a rubber or plastic membrane 16 is clamped between the rings 14 and 15, whereas a further guide membrane is clamped between the ring 14 and an extension 38 of the holder 13.
• the two guide membranes 33, 34 consist of thin sheet metal and their thickness is not greater than 1% of their diameter.
• these membrane disks can have radial incisions, which allow the center of the membrane disks to suffer a deflection of a few tenths of a millimeter with little effort with respect to the edge.
• These membrane disks have the task of centering the nozzle needle precisely in relation to the cone of the nozzle mouthpiece 6, in order in this way to ensure exact opening and exact sealing when the spray nozzle is closed.
• the rubber or Kumststoffmembranen 16, 26 each serve to seal a color-containing space 19 and 29 against the magnet system.
• the rubber or plastic membrane 16 is clamped between the lower part of the needle 7 and the spacer sleeve 17 and the membrane disk 33 is held between the spacer sleeve 17 and the middle part 18 of the needle.
• a further spacer sleeve 27 is placed on the upper end of the nozzle needle and is pressed down by a screw bolt 9.
• the membrane disk 34 is then held between the upper needle part 28 and the spacer sleeve 27 and the rubber or plastic membrane 26 is held between the head 39 of the screw bolt 9 and the spacer sleeve 27.
• the paint to be sprayed is introduced into the upper color space 29 through a hole 40 in the lid 2 and flows from there through openings 41 into an annular chamber 35 which between the housing 1 and the pot 12, the spacer ring 30, through the holder 13 Pot 22 and the bracket 23 formed unit is provided, and from there through the openings 42 in the lower color space 19th
• the rubber or plastic membranes 26 and 16 are essentially of the same area, it is not necessary to carry out pressure compensation for the space between these two membranes.
• the two rubber membranes enclose an air cushion, which has a compensating effect in the event of short pressure surges.
• valves that are parallel to a liquid feed do not influence each other. This represents a significant advantage, since it is not necessary to provide separate supply lines for any compressed air and measuring devices.
• the liquid pressure can be between 0 and 10 bar. Because the rubber or plastic membranes 16, 26 have the same area, the nozzle needle would be in balance if an additional force were not applied by one of the permanent magnets 10, 20.
• the effect of the permanent magnets 10, 20 is caused by an electrical impulse which is generated by the wick lungs 11 and 21 flows, weakened or reinforced. Since the windings 11, 21 are switched in opposite directions, for example, the effect of the upper magnet is increased, whereas the effect of the lower magnet is weakened, the magnet armature disk 31 then being moved together with the needle in the direction of the stronger magnet. After the pulse has ended, the magnet armature disk is then held on by the permanent magnet. This has the advantage that an energy supply is only necessary at the moment the needle is closed, but no energy has to be used to hold the needle in one position. It should also be noted that all thermal problems have been eliminated by the inventive measures.
• the stroke of the nozzle needle can be easily changed by changing the spacer sleeve 30.
• the length of the needle can also be varied by changing the spacer sleeve 30, so that the spray nozzle according to the invention can be adapted to the requirements in a simple manner.
• One change of the magnet system could be that the core of the magnet is made of soft iron instead of a permanent magnet. The magnetic force would then be applied by a continuous current flowing through the coil 11 or 21.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Mechanical Engineering (AREA)
• Nozzles (AREA)
• Treatment Of Fiber Materials (AREA)
• Magnetically Actuated Valves (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=3561829

Family Applications (1)

Country Status (7)

Cited By (4)

Families Citing this family (14)

Citations (1)

Family Cites Families (3)

• 1980
  • 1980-08-21 AT AT0426980A patent/AT372417B/de not_active IP Right Cessation
• 1981
  • 1981-08-20 GB GB8211024A patent/GB2093570B/en not_active Expired
  • 1981-08-20 JP JP56502932A patent/JPS6115179B2/ja not_active Expired
  • 1981-08-20 WO PCT/AT1981/000021 patent/WO1982000604A1/de not_active Ceased
  • 1981-08-20 DE DE3152269A patent/DE3152269C1/de not_active Expired
  • 1981-08-20 US US06/373,501 patent/US4606502A/en not_active Expired - Fee Related
  • 1981-08-20 AU AU75357/81A patent/AU543691B2/en not_active Ceased
  • 1981-08-20 DE DE81AT8100021D patent/DE3152269D2/de not_active Expired

Patent Citations (1)

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