US3753529A - Spray apparatus - Google Patents

Spray apparatus Download PDF

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Publication number
US3753529A
US3753529A US00220872A US3753529DA US3753529A US 3753529 A US3753529 A US 3753529A US 00220872 A US00220872 A US 00220872A US 3753529D A US3753529D A US 3753529DA US 3753529 A US3753529 A US 3753529A
Authority
US
United States
Prior art keywords
outlet
spray
inlet
fluid
conduit
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
US00220872A
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English (en)
Inventor
Baker D Brooks
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.)
Bird Machine Co Inc
Sulzer Papertec Mansfield Inc
Original Assignee
Bird Machine Co Inc
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 Bird Machine Co Inc filed Critical Bird Machine Co Inc
Application granted granted Critical
Publication of US3753529A publication Critical patent/US3753529A/en
Assigned to BIRD ESCHER WYSS reassignment BIRD ESCHER WYSS ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BIRD MACHINE COMPANY, INC., A MA CORP.
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

Definitions

  • ABSTRACT shower apparatus has a pressure fluid conduit with [2]] Appl' spray nozzles having body portions immersed in the fluid and internal valve members movable between a [52] US. Cl. 239/110, 239/113 p y position ting th apacity f th spray out- [51] Int.
  • valve members which are movable between a spray position in which they restrict the spray outlet and a purge position in which they are retracted from and no longer restrict the spray outlet, so that foreign matter that may have collected in the nozzle can be flushed out of the enlarged outlet. Movement of the valve members between the two positions has been produced by changing the relative fluid pressure conditions in the two conduits to which ports in the nozzle body are respectively exposed.
  • Such spray apparatus has important advantages over other types and has had substantial usage in applications where the spray fluid contains solid materials which are likely to plug the spray outlets.
  • it is relatively expensive to fabricate, in part because of the requirement of two conduits into both of which the nozzles extend.
  • This requirement has been met by providing an intermediate dividing wall in a single pipe, thus dividing the pipe into two conduits having separate flow control valves.
  • the nozzle bodies are fastened in fluid tight relation through aligned apertures in the pipe and dividing wall.
  • Such structure is difficult to make, particularly in cases where the pipe must be curved or bent.
  • the object of the invention is to provide improved apparatus of this type which operates by changing flow conditions in only a single conduit to which the nozzle bodies are exposed, thus eliminating the difficult and expensive fabricating operations of the two conduit apparatus of the prior art.
  • the invention provides a single conduit in which such different fluid flow conditions may be alternately produced, and nozzle bodies having an inlet port located in an area subjected to relatively high pressure at fast flow and an outlet port located in an area subjected to relatively low pressure at such flow, the inlet port being located between the outlet port and the spray outlet.
  • slow flow there is a pressure differential between the two ports in the direction to move the vnlve members into the spray position and hold them there.
  • the pressure differential reverses direction which moves the valve members into purge position.
  • the inlet port is located in the upstream face of each nozzle body while the outlet port is located either in the opposite downstream face or the bottom thereof, the upstream face being a relatively high pressure area to the other two port locations under fast flow.
  • the conduit is provided with a discharge valve at the end opposite the inlet which is closed or substantially so for spray and opened for purge, the capacity of the conduit and valve being such that the flow rate through the conduit when the valve is open is much greater, preferably several times greater, than the flow rate when the valve is closed.
  • the valve members are most desirably of the type which have an enlargement located between the inlet and output ports.
  • FIG. 1 shows apparatus according to the invention partially broken away, the conduit and discharge valve being shown in longitudinal section and the nozzles in side elevation;
  • FIG. 2 is a view partly in section, partly in elevation of a nozzle of FIG. 1, taken on line 2-2 of FIG. 1 in the direction of the arrows;
  • FIG. 3 is a cross-section view on line 3-3 of FIG. 2, showing the valve member in purge position;
  • FIG. 4 is a cross-sectional view of another form of nozzle.
  • the apparatus has a single conduit manifold 10 having a threaded inlet end 12 for receiving a coupling connection to a source (not shown) of spray fluid (e. g., white water in paper mill use) under pressure.
  • a source not shown
  • spray fluid e. g., white water in paper mill use
  • the opposite end of the manifold has an outlet extension 14 which may, for example, be connected to a recirculation system and is controlled by a valve 16 shown in the open (purge) position, valve 16 having its port 18 substantially of the same cross sectional size as manifold 10.
  • Manifold 10 has mounted therein a plurality of nozzle bodies 20 which extend through apertures in the wall of the manifold and are secured thereto adjacent the spray outlet ends 22 thereof by welding as shown, or by screw threading, so that the outlet ends 22 project outwardly of the manifold.
  • nozzle bodies 20 are generally cylindrical members having an interior chamber 24 in which a valve member 26 is axially movable.
  • the nozzle bodies are provided with an inlet port shown as a slot 28 which faces upstream in the manifold and an outlet port shown as a slot 30 in the opposite side facing downstream, the inlet slotbeing closer to the spray outlet end 22 than the outlet slot.
  • the outlet end are formed of plugs having shanks 32 which fit inside the outer end of the nozzle bodies and have a projecting flange 33 which seatsagainst the outer end of the valve body.
  • An O-ring (not shown) may be provided in a groove in the outer end of the valve body to insure a tight seal with flange 33.
  • the plugs have an interior passage 34 which forms a continuation of chamber 24, and a spray port 36, shown as a slot of roughly V-shaped cross-section, opening from passage 34 through the sidewall of the plug.
  • the ends oibodies 20 opposite spray ends 22 are closed beyond outlet slot 30.
  • a nut 37 is fastened over the screw threaded exterior end of body 20 to retain the plug in place.
  • Valve members 26 are in the form of pistons having an enlarged base end 38 and a hollow shank 40 open at its end opposite base 38 and provided with an inlet port shown as a slot 42 through the wall thereof adjacent base38.
  • the open end of shank 40 has a substantially spherically shaped enlargement 44 which seats against the upper end of passage 34 in the spray position shown in FIG. 2 so as to restrict but not entirely close spray slot 36.
  • valve members 26 are in the spray position shown in FIG. 2.
  • the spray fluid flows into the inlet slots 28 in nozzle bodies 20 and the inlet ports 42 of their valve members 26, thence out the restricted portion of slot 36 beyond the open end of the valve members to form the spray, as indicated by the dashed arrowed line in FIG. 2
  • valve 16 closed fluid discharge from manifold is relatively small, the flow therein is relatively slow and pressure conditions in the fluid surrounding the inlet and outlet ports are similar.
  • the flow through inlet port 28 to the spray outlet creates a pressure differential on the opposite side of base 38 which maintains the valve members in the spray position of FIG. 2.
  • valve 16 is opened to the position of FIG. 1 causing relatively large discharge from conduit 10 and relatively fast flow of fluid therein.
  • the pressure on the upstream face of the nozzle bodies becomes greater than on the downstream face, creating a pressure differential in the nozzle bodies toward their outlet ports 30 which forces the valve members toward the outlet ports to their purge position of FIG. 3.
  • On closing valve 16 the original pressure differential is restored, returning the valve members to the spray position of FIG. 2.
  • valve members loosely, freely movable in the nozzle portions are shifted from spray to purge back to spray positions simply by opening and closing an exhaust valve in a single conduit manifold.
  • the difference in fluid flow rates through the manifold conduit at spray and purge, respectively should be substantial.
  • liquid spray apparatus constructed according to FIGS. 1-3 having 30 nozzles on a 2% inch [.D. manifold with a 2 inch I.D. outlet valve, discharged about 70 g.p.m. during spray at about 40 p.s.i. inlet pressure. During purge the inlet pressure dropped to about p.s.i., about 170 g.p.m.
  • the nozzle bodies were about 3 inches long and had inlet and outlet slots facing as in FIG. 1. All valve members of the nozzle bodies shifted satisfactorily as required for spray and purge simply by opening and closing the outlet valve.
  • FIGS. 1-3 produces what is known as a fan spray" which is desirable for many uses.
  • the nozzle bodies and valve members may however be designed to produce other types of spray, such as a hollow cone spray for which the modified nozzle body and valve member of FIG. 4 is adapted, this modification also showing a different location for the outlet port.
  • the nozzle body 50 thereof has an externally threaded shank 52 which is received in correspondingly internally threaded opening 54 in single conduit manifold 10'.
  • Body 50 has a chamber 56 formed therein by a bore of generally circular crosssection extending longitudinally entirely through the body from its end 58 within manifold 10' to its end 60 outside the manifold.
  • Chamber 56 tapers toward its longitudinal axis at 62 to form a first shoulder and so tapers again at 64 to form a second shoulder, which extends to spray discharge port 66 of substantially reduced diameter as compared with the diameter of the outlet port opening 68 in the end 58.
  • An inlet port 70 is provided into chamber 56 through the wall portion of nozzle body 50 facing the inlet to the manifold.
  • the valve member 72 has an enlarged base 74 formed as a disc which is located outside the end 58 of the nozzle body and is of slightly larger diameter than port 68 to substantially close that port when the valve member is in the spray position shown in FIG. 4.
  • the shank of valve member 72 has an annular enlargement 76 forming a stop shoulder which engages a lug 78 on the inner wall of chamber 56 when the valve member moves to purge position.
  • Member 72 also has an enlarged head 80 which tapers toward its longitudinal axis at 82. Head 80 is provided with one or more, preferably at least two, angularly directed or helical external grooves 84 which extend to the end of the tapered portion 82.
  • Tapered portion 82 is arranged to seat against shoulder 62 of the nozzle body for part of their respective lengths at their relative positions of FIG. 4, so that the sides of the groove or grooves 84 and shoulder 62 form open-ended tubular channels between the portions of chamber 56 at opposite sides of shoulder 62.
  • a pin 86 extends from the end of head 80 and, in the position of parts shown in FIG. 4, extends centrally into spray discharge opening 66.
  • the slow flow with closed outlet valve to the manifold produces similar pressure conditions at inlet port 70 and outlet port 68 so that the fluid flow through the nozzle body to the spray outlet creates a pressure differential in the direction to hold the valve member in spray position with disc 74 seated against the end 58 of the nozzle body.
  • opening the outlet valve in manifold 10 causes relatively fast fluid flow in the manifold having a venturi effect on disc 74 producing a lower pressure than on inlet 70, which forces valve member 72 in the direction to unseat disc 74 from nozzle body end 58 until shoulder 76 engages lug 78.
  • This moves head 80 away from shoulder 62 so that flow of fluid between head 80, shoulder 82 and shoulder 62 can clean out any debris that may have accumulated in groove or grooves 84 and flush it out the outlet 66 now enlarged by withdrawal of pin 86 inwardly therefrom, together with debris that may have accumulated in chamber 56 at opposite sides of shoulder 82.
  • outlets which are restricted in spray position and enlarged in purge position, the first one of these being formed by outlet 66 and pin 86 and the second one being formed by head 80, shoulder 82, groove has the same capacity during spray and purge so that 1 the second outlet becomes the only one providing the.
  • shower apparatus comprising a conduit having an inlet adapted for connection to a source of fluid under pressure and having a main outlet, said conduit defining a single passage for the flow of fluid from said inlet to said outlet, valve means for controlling fluid flow from said outlet, a plurality of spray nozzles having body portions exposed to the flow of fluid in said passage, said body portions having inlet and outlet ports, said nozzles having a spray outlet for discharging fluid to the exterior of said conduit, said inlet port being disposed closer to said spray outlet than said outlet port and in the side of said body portions toward said inlet, said nozzles having a valve member movable therein between a spray position restricting the capacity of said spray outlet and a relatively non-restricting purge position, the capacities of said conduit, main outlet therefrom and spray outlets being such that fluid flow from said conduit main outlet may be controlled by said valve means to alter fluid flow in said conduit between relatively slow and relatively fast, said inlet and outlet ports being so located in said nozzle bodies that said slow and fast flow rates produce respectively opposite pressure differentials
  • valve member has a tubular body portion with inlet and outlet openings and fluid flow to said spray outlet while said valve member is in spray position is through said tubular body portion of said member from said inlet to said outlet openings.
  • valve member has an externally grooved body portion and said nozzle body has a shoulder engageable with said grooved portion while said valve member is in spray position so that fluid flow to said spray outlet is confined to flow through the groove or grooves thereof.

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  • Nozzles (AREA)
  • Cleaning By Liquid Or Steam (AREA)
US00220872A 1972-01-26 1972-01-26 Spray apparatus Expired - Lifetime US3753529A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22087272A 1972-01-26 1972-01-26

Publications (1)

Publication Number Publication Date
US3753529A true US3753529A (en) 1973-08-21

Family

ID=22825362

Family Applications (1)

Application Number Title Priority Date Filing Date
US00220872A Expired - Lifetime US3753529A (en) 1972-01-26 1972-01-26 Spray apparatus

Country Status (9)

Country Link
US (1) US3753529A (da)
JP (1) JPS5547940B2 (da)
CA (1) CA977009A (da)
DE (1) DE2302223C3 (da)
FI (1) FI54770C (da)
FR (1) FR2169646A5 (da)
GB (1) GB1398671A (da)
IT (1) IT976240B (da)
SE (1) SE388134B (da)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418640A (en) * 1981-04-16 1983-12-06 Reich Spezialmaschinen Gmbh Applicator for applying adhesive to a work piece
CN102762310A (zh) * 2010-02-12 2012-10-31 本田技研工业株式会社 喷涂枪的清洗装置及清洗方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187977B (en) * 1986-03-18 1989-12-20 Instafoam & Fibre Limited Nozzle arrangements
SE457974B (sv) * 1987-10-16 1989-02-13 Reinhold Berntsson Anordning foer applicering av en limstraeng paa en loepande bana
FR2710666B1 (fr) * 1993-09-27 1996-03-01 Viafrance Sa Bloc de pulvérisation de produits routiers.
DE4447016A1 (de) * 1994-12-30 1996-07-11 Focke & Co Düsenaggregat zum Auftragen von Leim
EP0719592B1 (de) * 1994-12-30 2003-03-26 Focke & Co. (GmbH & Co.) Düsenaggregat zum Auftragen von Leim

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3073529A (en) * 1962-04-02 1963-01-15 Bird Machine Co Spray nozzle
US3249305A (en) * 1963-11-18 1966-05-03 Bird Machine Co Spray nozzle
US3347463A (en) * 1965-09-07 1967-10-17 Bird Machine Co Spray apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3073529A (en) * 1962-04-02 1963-01-15 Bird Machine Co Spray nozzle
US3249305A (en) * 1963-11-18 1966-05-03 Bird Machine Co Spray nozzle
US3347463A (en) * 1965-09-07 1967-10-17 Bird Machine Co Spray apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418640A (en) * 1981-04-16 1983-12-06 Reich Spezialmaschinen Gmbh Applicator for applying adhesive to a work piece
CN102762310A (zh) * 2010-02-12 2012-10-31 本田技研工业株式会社 喷涂枪的清洗装置及清洗方法
CN102762310B (zh) * 2010-02-12 2015-06-03 本田技研工业株式会社 喷涂枪的清洗装置及清洗方法

Also Published As

Publication number Publication date
FR2169646A5 (da) 1973-09-07
JPS5547940B2 (da) 1980-12-03
FI54770B (fi) 1978-11-30
IT976240B (it) 1974-08-20
GB1398671A (en) 1975-06-25
DE2302223C3 (de) 1980-08-28
FI54770C (fi) 1979-03-12
SE388134B (sv) 1976-09-27
CA977009A (en) 1975-10-28
DE2302223B2 (de) 1979-12-20
JPS4883661A (da) 1973-11-07
DE2302223A1 (de) 1973-08-09

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BIRD ESCHER WYSS, MASSACHUSETTS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BIRD MACHINE COMPANY, INC., A MA CORP.;REEL/FRAME:005315/0311

Effective date: 19890509