US3593920A - Spray head - Google Patents

Spray head Download PDF

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Publication number
US3593920A
US3593920A US790213A US3593920DA US3593920A US 3593920 A US3593920 A US 3593920A US 790213 A US790213 A US 790213A US 3593920D A US3593920D A US 3593920DA US 3593920 A US3593920 A US 3593920A
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US
United States
Prior art keywords
holder
spray
passage
moveable
assembly
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 - Lifetime
Application number
US790213A
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English (en)
Inventor
Harold S Watson
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.)
Delavan Manufacturing Co
Original Assignee
Delavan Manufacturing Co
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 Delavan Manufacturing Co filed Critical Delavan Manufacturing Co
Application granted granted Critical
Publication of US3593920A publication Critical patent/US3593920A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B05B15/531—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 backflow
    • B05B15/534—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 backflow by reversing the nozzle relative to the supply conduit

Definitions

  • ABSTRACT A spray head having a spray tip carrying holder 239/507 which is rotatable between a spraying position and a spray tip [51] Int. Cl 1305b 15/02 cleaning position, includes a deflection member which breaks [50] Field of Search .3 239/1 19, up the needlelike jet issuing from the spray tip when the tip is 104, 106, 587, 505, 507, 465, 463 in issuing cleaning position.
  • This invention relates to the sprayhead or nozzle assemblies of spray guns, and more particularly; nozzle assemblies of the kind which embody a reversible spray tip whereby the spray orifice thereof may readily be cleaned by a reverse flow of liquid therethrough.
  • Nozzle assemblies of the kind referred to are known are usually comprises a main tubular body portion one end of which is adapted to be connected to a source of pressurized fluid which is to be sprayed and the other end of which has a spray outlet opening, a spray tip holder. mounted for rotation within a bore in the body about an axis normal to the axis of the bore, and means for angularly displacing the spray tip holder when desired from an operative spraying position to a reversed position for cleaning.
  • Such nozzle assemblies while functioning effectively in the" reverse flow cleaning and clearing of the spray tip orifice, have a disadvantage in that, in the reversed position of the spray tip, there is liable to be ejected from the nozzle a fine or needlelike jet of fluid. Due to the high pressures conventionally used in spraying operations, such fine jets of fluid and, more particu-Invently liquid, can constitute a danger, especially to the operator, if misdirected. For example in certain high-pressure airless painting devices, the jet issuing from the spray tip may be of sufficient piercing quality to pierce a man's heart, lungs or extremities.
  • the present invention has for its object to provide in and for use with a spray head or nozzle assembly as referred to, simple and effective means whereby the ejection of a dangerous fine or needle jet of liquid during cleaning of the spray tip is obviated.
  • liquid dispersal member which, in the reverse cleaning position of the spray tip, functions to break up and diffuse the jet issuing from the spray tip.
  • Such liquid dispersing means may be constituted by a baffle or vane or other obstructive member incorporated within the locking screw which functions to hold the spray tip in operative position within the spray holder, or may be associated with an insert or washer inserted between the locking screw and said spray tip.
  • FIG. 1 is a partially sectioned elevation view of a spray head incorporating the principles of my invention
  • FIG. 2 is an enlarged sectioned elevation view of the spray tip locking screw and deflection element of FIG. 1;
  • FIG. 3 is an end view of the deflection element shown in FIG. 2;
  • FIG. 4 is an enlarged sectioned elevation view of another embodiment of deflection element of my invention.
  • FIG. 5 is an enlarged sectioned elevation view of a deflection element mounted on a washer or insert.
  • FIG. 6 is an enlarged sectioned elevation view of still another deflection element of my invention.
  • the numeral 10 generally denotes a main tubular body formed at its front end with a circular discharge opening 11.
  • a' stance such as a plastic material.
  • the holder 12 is formed with t a passage 14 which'communicates with the bore 14 of the body 10.
  • the rear of the body is provided with a screw threaded plug 15 which functions to hold the seal 13 in operative position, and a supply tube 16 and aunion nut 17 for connecting the body assembly with a source of the pressurized fluid which is toibesprayed.
  • the spray tip holder 12 is formed with a stem 18, and fitted thereto by a screw 19 is the boss 20 of a handle 21 for effecting angular displacement of the spray tip holder.
  • the through passage 14 of the spray tip holder 12 is formed in two diameters so as to provide a shoulder 23 against which a replaceable spray tip 24 is seated.
  • the spray tip 24 may be of the conventional type having an orifice 25 which determines the flow rate and spray pattern.
  • the passage 14 of the holder 12, for the greater part of its length, is screw threaded so as to operatively receive a lock screw 26 for locking the spray tip 24, the screw 26 including a bore with a hexagonal or other shaped cross section 27 so that it may receive a suitable tightening tool.
  • the screw 26 thus serves to lock the spray tip '24 in position within the holder 12. It will be seen that the spray tip holder 12 may be angularly displaced by means of the handle 21 from an operative spraying position, as shown in FIG. I, to a reverse position for cleaning the orifice 25 of the spray tip 24.
  • vane or baffle 30 is provided in the lock screw 26,v which, while providing for an operational supply of liquid to the spray tip 24 during use, functions effectively during a cleaning operation to' prevent the ejection of a fine jet by deflecting, breaking up and dispersing same by causing the liquid to swirl.
  • the shape of a preferred form of baffle 30 is shown in FIGS. 2 and 3. i
  • FIG. 4 illustrates a modified form .of plug or look screw 26'.
  • the walls of the screw are drilled so as to receive a pin 31' which is positioned so that it is located diametrically across the hexagonal bore 32 of said screw and in the path of the jet when the spray tip is reversed to the cleaning position.
  • a washerlike insert 33 includes a bore 34, across which a diametrically located pin 35 extends.
  • the insert 33 is located between a lockscrew similar to 26 and spray tip 24 of the spray head, e.g. as illustrated in FIG. 1.
  • the pin 35 is located across the axis of the spray tip orifice 2S and functions effectively to prevent the ejection of a dangcrous jet of liquid during reverse flow of the liquid through the spray tip 24.
  • FIG. 6 also illustrates an insert for location between a lock screw similar to 26 and spray tip 24.
  • the insert 36 is provided with a central aperture or bore 37 and two or more-divergent passages or bores 38 extending from said central box.
  • the arrangement is such that flow of liquid through a reversed spray tip to clean same will be effectively dispersed and the formation 5 of a dangerous jet prevented since the jet is divided and diverted through the bores 38.
  • a spray head assembly comprising a body
  • deflection means in and moveable with said moveable holder, said deflection means being normally moved to a first position between said spray means and said passage and out of the path of the fluid stream issuing from the I spray means when the moveable holder is moved to a first position and said deflection means being moveable to a second position wherein said spray means is positioned between said deflection means and said passage when the moveable holder is moved to a second position, said deflection means being positioned in the path of the fluid stream issuing from the spray means when said moveable holder is in said second position whereby said deflection means is impinged by said fluid stream to diffuse the fluid stream.
  • said deflection means comprises means for producing turbulence in the fluid stream issuing from said spray means when said moveable holder is moved to said second position.
  • said deflection means comprises a first bore communicating with said spray means and a plurality of second bores communicating with said first bore the fluidstream issuing from said spray means entering said first bore and exiting from said second bores when said moveable holder is moved to said second position.

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  • Catching Or Destruction (AREA)
  • Fertilizing (AREA)
  • Nozzles (AREA)
US790213A 1968-05-31 1969-01-10 Spray head Expired - Lifetime US3593920A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26095/68A GB1199873A (zh) 1968-05-31 1968-05-31

Publications (1)

Publication Number Publication Date
US3593920A true US3593920A (en) 1971-07-20

Family

ID=10238288

Family Applications (1)

Application Number Title Priority Date Filing Date
US790213A Expired - Lifetime US3593920A (en) 1968-05-31 1969-01-10 Spray head

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US (1) US3593920A (zh)
GB (1) GB1199873A (zh)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2622396A1 (de) * 1975-05-19 1976-12-02 Graco Inc Spritzduese
US4074857A (en) * 1975-10-15 1978-02-21 Calder Oliver J Reversible spray tip
US4116386A (en) * 1976-02-23 1978-09-26 A.S.M. Company Spray nozzle head
WO1982002501A1 (en) * 1981-01-29 1982-08-05 Goesta Hellman A spraying device
US4365563A (en) * 1980-05-29 1982-12-28 Shell Oil Co. Safety device for a burner of a coal gasification plant
US4676435A (en) * 1986-04-01 1987-06-30 Nesland Nickolas B Sprayer head
US4971249A (en) * 1989-10-04 1990-11-20 Graco Inc. Airless spray tip retainer/diffuser
US5178684A (en) * 1991-06-05 1993-01-12 Hutchins Sr Danny T Method for cleaning water pipe
US5294053A (en) * 1993-02-09 1994-03-15 Perret Jr Robert J Airless spray head with improved orifice tip mounting
US5505381A (en) * 1994-09-19 1996-04-09 Wagner Spray Tech Corporation Rotatable, cleanable, flat tip holder for airless spraying
US5765753A (en) * 1996-07-18 1998-06-16 Wagner Spray Tech Corporation Reversible spray tip
US5887793A (en) * 1997-06-09 1999-03-30 Wagner Spray Tech Corporation Dual mode reversible spray tip
US5893522A (en) * 1997-06-02 1999-04-13 Wagner Spray Tech Corporation Method of orienting a spray tip in a holder
US5911364A (en) * 1997-07-29 1999-06-15 Wagner Spray Tech Corporation Reversible tip detent
US6264115B1 (en) 1999-09-29 2001-07-24 Durotech Company Airless reversible spray tip
CN117443116A (zh) * 2023-10-25 2024-01-26 山东鲁瑞药业有限公司 一种尾气处理设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4508268A (en) * 1982-12-21 1985-04-02 Geberth John Daniel Jun Reversible spray tip

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US442762A (en) * 1890-12-16 Vaporizing spray-nozzle
US949489A (en) * 1909-07-26 1910-02-15 James G Mastin Nozzle.
US2140903A (en) * 1936-06-20 1938-12-20 Merton L Fisk Spraying nozzle
US3104829A (en) * 1962-05-17 1963-09-24 Spraying Systems Co Vane unit for spray nozzles
US3116882A (en) * 1962-01-25 1964-01-07 Gray Company Inc Turret-nozzle for paint spray guns
US3202360A (en) * 1963-06-17 1965-08-24 Spraying Systems Co Spray head
US3414196A (en) * 1967-01-09 1968-12-03 Vilbiss Co Self-cleaning tip for airless spray guns

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US442762A (en) * 1890-12-16 Vaporizing spray-nozzle
US949489A (en) * 1909-07-26 1910-02-15 James G Mastin Nozzle.
US2140903A (en) * 1936-06-20 1938-12-20 Merton L Fisk Spraying nozzle
US3116882A (en) * 1962-01-25 1964-01-07 Gray Company Inc Turret-nozzle for paint spray guns
US3104829A (en) * 1962-05-17 1963-09-24 Spraying Systems Co Vane unit for spray nozzles
US3202360A (en) * 1963-06-17 1965-08-24 Spraying Systems Co Spray head
US3414196A (en) * 1967-01-09 1968-12-03 Vilbiss Co Self-cleaning tip for airless spray guns

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2622396A1 (de) * 1975-05-19 1976-12-02 Graco Inc Spritzduese
US4074857A (en) * 1975-10-15 1978-02-21 Calder Oliver J Reversible spray tip
US4116386A (en) * 1976-02-23 1978-09-26 A.S.M. Company Spray nozzle head
US4365563A (en) * 1980-05-29 1982-12-28 Shell Oil Co. Safety device for a burner of a coal gasification plant
WO1982002501A1 (en) * 1981-01-29 1982-08-05 Goesta Hellman A spraying device
US4676435A (en) * 1986-04-01 1987-06-30 Nesland Nickolas B Sprayer head
US4971249A (en) * 1989-10-04 1990-11-20 Graco Inc. Airless spray tip retainer/diffuser
US5178684A (en) * 1991-06-05 1993-01-12 Hutchins Sr Danny T Method for cleaning water pipe
US5294053A (en) * 1993-02-09 1994-03-15 Perret Jr Robert J Airless spray head with improved orifice tip mounting
US5505381A (en) * 1994-09-19 1996-04-09 Wagner Spray Tech Corporation Rotatable, cleanable, flat tip holder for airless spraying
US5765753A (en) * 1996-07-18 1998-06-16 Wagner Spray Tech Corporation Reversible spray tip
US5893522A (en) * 1997-06-02 1999-04-13 Wagner Spray Tech Corporation Method of orienting a spray tip in a holder
US5887793A (en) * 1997-06-09 1999-03-30 Wagner Spray Tech Corporation Dual mode reversible spray tip
US5911364A (en) * 1997-07-29 1999-06-15 Wagner Spray Tech Corporation Reversible tip detent
US6264115B1 (en) 1999-09-29 2001-07-24 Durotech Company Airless reversible spray tip
US6390386B2 (en) 1999-09-29 2002-05-21 Durotech Company Airless reversible spray tip
CN117443116A (zh) * 2023-10-25 2024-01-26 山东鲁瑞药业有限公司 一种尾气处理设备
CN117443116B (zh) * 2023-10-25 2024-04-26 山东鲁瑞药业有限公司 一种尾气处理设备

Also Published As

Publication number Publication date
GB1199873A (zh) 1970-07-22

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