WO2007056437A1 - Appareil de filtration, regulateur filtrant destine a etre utilise avec un pistolet de pulverisation et systeme de pulverisation l’utilisant - Google Patents

Appareil de filtration, regulateur filtrant destine a etre utilise avec un pistolet de pulverisation et systeme de pulverisation l’utilisant Download PDF

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Publication number
WO2007056437A1
WO2007056437A1 PCT/US2006/043447 US2006043447W WO2007056437A1 WO 2007056437 A1 WO2007056437 A1 WO 2007056437A1 US 2006043447 W US2006043447 W US 2006043447W WO 2007056437 A1 WO2007056437 A1 WO 2007056437A1
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WO
WIPO (PCT)
Prior art keywords
filter
filtering apparatus
housing
pressurized gas
pressure
Prior art date
Application number
PCT/US2006/043447
Other languages
English (en)
Other versions
WO2007056437A9 (fr
Inventor
Roberto Baptista Da Costa
Nelson Testa Filho
Kleber Batista
Original Assignee
Illinois Tool Works 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 Illinois Tool Works Inc. filed Critical Illinois Tool Works Inc.
Priority to JP2008540153A priority Critical patent/JP2009514675A/ja
Priority to CA2628982A priority patent/CA2628982C/fr
Priority to GB0808367A priority patent/GB2445523B/en
Publication of WO2007056437A1 publication Critical patent/WO2007056437A1/fr
Publication of WO2007056437A9 publication Critical patent/WO2007056437A9/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
    • B01D46/0086—Filter condition indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • B01D46/64—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series arranged concentrically or coaxially
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/048—Arrangements for compressed air preparation, e.g. comprising air driers, air condensers, filters, lubricators or pressure regulators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2267/00—Multiple filter elements specially adapted for separating dispersed particles from gases or vapours
    • B01D2267/40—Different types of filters

Definitions

  • the disclosed embodiments relate to a filtering apparatus, a filter regulator for use with one or more spray guns, and a spraying system using the same.
  • Clean, compressed air has been known to be critical for operation of equipment that runs on compressed air, such as various air operated instruments, paint spray equipment, and other pneumatic devices that require oil and liquid free compressed natural gas or air.
  • a filtering apparatus includes a housing having an inlet and at least an outlet, and a filter arrangement disposed in the housing, downstream of the inlet and upstream of the outlet for filtering a pressurized gas entering the housing through the inlet to provide a filtered pressurized gas at the outlet.
  • the filter arrangement has first and second tubular filter elements. The first filter element is received within the second filter element.
  • the filtering apparatus is configured as a filter regulator when equipped with a pressure regulator.
  • a spraying system using the filtering apparatus or the filter regulator is provided.
  • Fig. IA is a front view of a filter regulator in accordance with an embodiment of the present invention.
  • Fig. IB is a front-left-top perspective view of the filter regulator shown in Fig. IA.
  • Fig. 2 is a cross sectional view taken along line II-II in Fig. IB.
  • Fig. 3 is a cross sectional view taken along line III- III in Fig. IB.
  • Fig. 4 is a cross sectional view taken along line IV-IV in Fig. 3.
  • Fig. 5A is a view similar to Fig. IB.
  • Fig. 5B is an enlarged, cross sectional view of circled area B in Fig. 5 A.
  • Fig. 6 is an exploded view of the filter regulator shown in Fig. IA.
  • Fig. 7 is a perspective view showing the filter regulator of Fig. IA and two spray guns.
  • Fig. 8A is a front view of a filter regulator in accordance with a further embodiment of the present invention.
  • Fig. 8B is a front-left-top perspective view of the filter regulator shown in Fig. 8A.
  • Fig. 9A is a cross sectional view taken along line IX-IX in Fig. 8B showing one half of the filter regulator; Fig. 9B is a perspective view of the other half of the filter regulator; Fig. 9C is a cutaway perspective view showing an internal structure of the filter regulator from the rear of the filter regulator; and Fig. 9D is a cutaway perspective view showing the internal structure of the filter regulator from the front of the filter regulator.
  • Fig. 10 is a cross sectional view taken along line X-X in Fig. 8B.
  • Fig. 11 is a cross sectional view taken along line XI- XI in Fig. 10.
  • Fig. 12 is an exploded view of the filter regulator shown in Fig. 8 A.
  • Figs. IA and IB are front and perspective views of a filter regulator 100 in accordance with an embodiment of the present invention.
  • Cross-sectional views of filter regulator 100 are provided in Figs. 2-4.
  • Fig. 6 is an exploded view of filter regulator 100.
  • Figs. 8-12 are various views of a filter regulator 800 which is a simplified version of filter regulator 100 shown in Figs. 1-7.
  • filter regulator 800 neither includes a line pressure gauge (such as 26), nor a filter-change indicator (such as 29).
  • valves 22, 23 of filter regulator 100 are replaced with manual drain cocks 30, 31 in filter regulator 800.
  • Filter regulator 800 is otherwise substantially identical to filter regulator 100 and filter regulators 100 and 800 will be described in further detail herein together.
  • filter regulator 100 includes a housing 101 which in turn includes an upper portion or hollow body 1, and a lower portion or bowl 2.
  • Body 1 and bowl 2 in an embodiment are separately manufactured and fastened together, e.g., by bolts 651 shown in Fig. 6.
  • Body 1 and bowl 2 can also be attached by threaded or bayonet connections.
  • a sealing element, such as O ring 676 in Fig. 6, is used in an embodiment to ensure that the connection between body 1 and bowl 2 is airtight.
  • the above-described detachable arrangement allows for removal of bowl 2 from body 1 for maintenance or service.
  • Each or both bowl 2 and hollow body 1 can be made of metal or any suitable material, such as plastic. Other arrangements and/or materials are, however, not excluded.
  • Housing 101 includes an inlet 252 (Figs. 2 and 9B) which, in an embodiment, is located at the upper portion or body 1 of housing 101.
  • Inlet 252 is configured for connection to a source (not shown) of pressurized gas, such as compressed air.
  • the connection between inlet 252 and the source of pressurized gas can be of any type known in the art and will not be described in further detail herein, hi the specific embodiment shown in Figs. 2 and 9B, inlet 252 is a hole arranged on a rear side of filter regulator 100 and oriented upwardly. This arrangement facilitates connection, e.g., via a hose, of the source of pressurized gas to inlet 252, without causing significant obstruction of the work area in the front of filter regulator 100. Other arrangements are, however, not excluded.
  • Housing 101 further includes at least an outlet at which the pressurized gas that enters filter regulator 100 via inlet 252 and filtered by a filter arrangement as will be described hereinafter is provided as a filtered pressurized gas.
  • outlets 102-104 FIGs. 1A-1B
  • 105 FIG. 6
  • Outlets 102-105 are located at opposite lateral sides of filter regulator 100 and oriented obliquely downwardly as best seen in Fig. 9C. This arrangement avoids kinking of the hoses (not shown) to be connected to outlets 102-105.
  • Other arrangements are, however, not excluded.
  • the number of the outlets of filter regulator 100 is not limited to four and may vary depending on the applications.
  • outlets 103-105 are regulated outlets at which the filtered pressurized gas is provided at a desired pressure regulated by a pressure regulator as will be described hereinafter.
  • outlet 102 is a unregulated outlet at which the filtered pressurized gas is provided at or near the line pressure of the unfiltered pressurized gas that enters filter regulator 100 via inlet 252.
  • the pressure of the filtered pressurized gas at unregulated outlet 102 is not regulated by the pressure regulator.
  • the regulated filtered pressurized gas at outlets 103-105 can be used for applications that require clean or filtered pressurized gas at a specific pressure, for example, paint spraying or paint pressurizing.
  • unregulated outlet 102 can be employed for applications that do not require the filtered pressurized gas to be at a specific pressure, such as duster guns.
  • the numbers of regulated and unregulated outlets of filter regulator 100 are not limited to the specifically disclosed numbers, and may vary depending on applications. For example, all outlets can be regulated outlets or unregulated outlets. In the latter case, i.e., all outlets are unregulated outlets, the pressure regulator can be omitted and filter regulator 100 becomes a filtering apparatus that simply provides filtered pressurized gas without any pressure regulation. Other arrangements are, however, not excluded.
  • each outlet 102-105 is equipped with a valve 653 for selectively opening and closing the outlet.
  • valves 653 are ball valves as best seen in Fig. 9C, but valves of other types can be used.
  • Each outlet 102-105 includes multiple holes 654, 655 for respectively fitting the main body and handle of valve 653 as shown in Fig. 6. Other arrangements are, however, not excluded.
  • one or more valves 653 can be omitted or provided separately from filter regulator 100 in which case the respective outlets 102-105 will be connected to the separately provided valve or valves by fittings or the like.
  • filter regulator 100 includes, besides housing 101, a filter arrangement 256 which is located downstream of inlet 252 and upstream of outlets 102- 105 for filtering the pressurized gas that enters filter regulator 100 via inlet 252 and providing the filtered pressurized gas, either pressure-regulated or unregulated, at outlets 102-105.
  • a filter arrangement 256 which is located downstream of inlet 252 and upstream of outlets 102- 105 for filtering the pressurized gas that enters filter regulator 100 via inlet 252 and providing the filtered pressurized gas, either pressure-regulated or unregulated, at outlets 102-105.
  • Filter arrangement 256 is located in the lower portion or bowl 2 of housing 101 and includes at least two filter elements 4 and 5 one arranged within another.
  • outer filter element 4 is located upstream of inner filter element 5, meaning that the pressurized gas, in operation, moves in the outside-to-inside direction through filter element 4 then through filter element 5, and escapes to the upper portion or body 1 of housing 101 through the internal space within filter element 5 as shown by arrows in Fig. 9B.
  • the upstream filter, i.e., filter element 4 is configured as a coarse filter
  • the downstream filter i.e., filter element 5 is configured as a fine filter.
  • Coarse filter 4 is positioned upstream of fine filter 5 to remove contaminants of large size that would otherwise easily clog the fine filter 5.
  • the coarse filter or filter element 4 is a particulate or porous filter
  • the fine filter or filter element 5 is a coalescing filter or a coalescer.
  • Particulate filter 4 is configured for removing particles, such as dirt, rust and pipe scale, of a certain size from the pressurized gas and preventing such particles from clogging the downstream filter element, i.e., coalescing filter 5.
  • particulate filter 4 functions as a pre-filter that insures long service life and high efficiency of coalescing filter 5 in particular and filter arrangement 256 as well as filter regulator 100 in general.
  • Particulate filter 4 can be configured in any manner known in the art.
  • particulate filter 4 may include a mesh or porous material of a certain mesh size.
  • particulate filter 4 comprises a plurality of plastic balls or spheres compressed together until a predetermined porousness is obtained, hi an embodiment, particulate filter 4 is configured to trap or intercept particles as small as 1 ⁇ m in diameter. Other arrangements and/or mesh sizes are not excluded.
  • Coalescing filter 5 is configured for removing oil and/or water and/or other liquid substance and/or their vapor from the pre-filtered pressurized gas that has passed particulate filter 4. Coalescing filter 5 is also responsible for trapping very fine particles that escape particulate filter 4.
  • Coalescing filter 5 can be configured in any manner known in the art.
  • coalescing filter 5 may include a fibrous assembly comprising a plurality of fine fibers which, in an embodiment, can be micro-fibers having a sub-micron diameter or a diameter of a few to several tens of microns ( ⁇ m) depending on applications.
  • Such fibers or micro-fibers can be glass fibers or glass micro-fibers arranged in a single layer or several layers. Other arrangements and/or material and/or fiber sizes are, however, not excluded.
  • Coalescing filter 5 generally removes solid contaminants in a direct impact and/or interception mode, and liquid or vapor contaminants in a diffusion mode.
  • solid contaminants i.e., fine particles that escape particulate filter 4
  • solid contaminants i.e., fine particles that escape particulate filter 4
  • Liquid or vapor contaminants e.g., aerosols
  • which also strike the fibers or filter media when a stream of the pre- filtered pressurized gas passes through coalescing filter 5 do not permanently adhere to the fibers or filter media. Rather, the aerosols are united together as they move under gravity down along the fibers to form larger drops. The drops grow until their masses are sufficient to cause the drops to fall out of the fibers or filter medium or media of coalescing filter 5 to be subsequently drained away.
  • coalescing filter 5 includes an inner support layer or core 257 and an outer filter medium 258.
  • filter medium 258 is on the outer side and support layer 257 is on the inner side, or wherein multiple filter media 258 are provided on both inner and outer sides of support layer 257, or wherein multiple support layers 257 are provided on both inner and outer sides of one or more filter media 258, are not excluded.
  • Support layer 257 is configured to provide mechanical strength to coalescing filter 5 as a whole.
  • Support layer 257 in an embodiment, is configured as a perforated sleeve.
  • a suitable material for support layer 257 includes metals, such as stainless steel. Other arrangements and/or materials are, however, not excluded.
  • Outer filter medium or media 258 can include one or more fibrous layers as described above. The fibrous layers can be smooth or pleated. Filter medium or media 258 may also include or coated with a drainage layer, which can be hydrophobic, for facilitating drainage of coalesced liquid, e.g., oil or water. Filter medium 258 in an embodiment is configured to remove liquid droplets and particles as small as 0.1 micron in diameter with an efficiency as high as 95% or greater. Again, other arrangements and/or materials and/or filter size and efficiency are not excluded.
  • filter element 4 and filter element 5 are separable from one another and can be individually serviced and/or replaced. It is, however, not excluded that the filter elements can be made integral in a single filter cartridge for facilitating assembly of the filter regulator 100, and/or ensuring the desired quality or cleanness of the filtered pressurized gas when the entire filter arrangement 256 is replaced. It should be noted that filter arrangement 256, in other embodiments, may include more than two filter elements.
  • the filter elements are not necessarily cylindrical in shape as specifically disclosed in Figs. 2-6. Rather, one or some or all of the filter elements can have a conical or truncated conical shape.
  • the filter elements are not required to be circular in cross section and can have other cross sectional shapes, such as square, hexagon, etc.
  • Filter arrangement 256 is supported from below, in accordance with the embodiment shown in Fig. 2, by a bottom plate 7 which has a single or several grooves best seen in Fig. 6 for receiving therein lower ends of filter elements 4, 5. The groove or grooves temporarily fix filter elements 4, 5 in place for assembly of filter regulator 100.
  • Bottom plate 7 further includes at least one through hole 359 for draining away the liquid coalesced by coalescing filter 5.
  • the through holes 359 in the embodiment of Fig. 2 are located corresponding to the space between filter elements 4 and 5. Other arrangements are, however, not excluded.
  • bottom plate 7 can be made of any suitable material such as plastic and/or metal.
  • bottom plate 7 includes a plastic disc that defines the groove or grooves for positioning filter elements 4, 5, and a metal, e.g., brass, member at the center of such disc for reliable connection to a rod 8 as will be described in detail herein below.
  • a metal e.g., brass
  • cup 6 is disposed below bottom plate 7 for collecting therein the coalesced liquid that has passed through holes 359.
  • cup 6 includes an upper enlarged portion 660 and a lower narrow portion 661.
  • Upper enlarged portion 660 of cup 6 is configured to sealingly receive therein bottom plate 7.
  • An O-ring 662 can be used for sealing between cup 6 and bottom plate 7.
  • Lower narrow portion 661 of cup 6 in an embodiment has a funnel shape. Other shapes are, however, not excluded.
  • Lower narrow portion 661 has an opening 363 (Fig. 3) at a bottom of cup 6 for draining away the coalesced liquid collected in cup 6.
  • Lower narrow portion 661 is sealingly fit in a hole 364 at a bottom of bowl 2.
  • no separate O-ring is required for sealing between lower narrow portion 661 and hole 364.
  • the outer wall of lower narrow portion 661 and/or the inner wall of hole 364 may include resilient ribs for frictionally holding lower narrow portion 661 in hole 364 and sealing between the elements.
  • Cup 6 can be made of any suitable material, such as metal or plastic.
  • cup 6 When cup 6 is made of plastic, the resilient ribs at the outer wall of lower narrow portion 661 can be molded together with the remainder of cup 6, and cup 6 so manufactured can be press-fit into hole 364 at the bottom of bowl 2. Other arrangements, such as when an O-ring is used for sealing between cup 6 and bowl 2, are not excluded.
  • Cup 6 and the inner wall of bowl 2 in an embodiment include matching flanges which engage, as best seen in Figs. 2-3, when cup 6 has been sufficiently pressed into hole 364 at the bottom of bowl 2, thereby stopping cup 6 from being further pressed into hole 364.
  • hole 364 of bowl 2 and lower narrow portion 661 of cup 6 are in sealing contact or have a sealing element therebetween.
  • the inner side wall, e.g., 372 (Fig. 3), of bowl 2 and the outer side wall, e.g., 673 (Fig. 6) of cup 6 are not entirely in sealing contact.
  • Cup 6 in some embodiments even includes one or more cutout portions in outer side wall 673. As a result, there is a fluid communication between a space 374 (Fig.
  • valve 23 is provided for selectively opening and closing opening 363.
  • Valve 23 can be an automatic valve or a drain cock.
  • valve 23 is an automatic valve of a float type which will be automatically opened when the coalesced liquid in lower narrow portion 661 has reached a predetermined level.
  • a manual valve or drain cock can be used instead, as shown at 30 in Fig. 8B and 9. Valves of other types, such as electronic automatic valves, are not excluded.
  • a deflector 3 is positioned as best seen in Figs. 2-3.
  • Deflector 3 has fins around its edge as best seen at 665 in Fig. 6. Fins 665 are slanted relative to the axial direction of filter arrangement 256 and/or axial direction of inlet 252 for imparting a swirling motion to the flow of pressurized gas entering housing 101 through inlet 252 as will be detailed herein after.
  • Deflector 3 can be generally annular in shape as disclosed in Fig. 6, or may include a cylindrical skirt as disclosed in the related US Provisional Application No. 60/734,574. Generally, deflector 3 is stationary and does not rotate despite the flow of pressurized gas in filter regulator 100.
  • Deflector 3, in an embodiment, is self-positioned on top of one and or both of filter elements 4, 5 by a groove on its underside that matched with the top end of the filter elements 4 and/or 5.
  • a cap 266 (Fig. 2) is used to center deflector 3 on top of filter arrangement 256.
  • cap 266 is fit in a central hole of deflector 3 on the one hand, and fits over the top end of filter element 5 on the other hand, as shown in Fig. 2.
  • Cap 266 and/or deflector 3 function as bottom plate 7 to temporarily fix filter arrangement 256 in place before assembly of filter regulator 100.
  • Cap 266 and/or deflector 3 and bottom plate 7 also function to maintain a desired spacing between filter elements 4, 5 of filter arrangement 256.
  • bowl 2 further includes another hole 369 (Fig. 3) at its bottom for draining water or other liquids collected therein due to the swirling motion imparted by deflector 3 to the stream of pressurized gas, as will be described in detail herein below.
  • hole 369 is also equipped with a valve 22 (Fig. 3) or 30 (Fig. 10) for selectively draining the collected liquid or water.
  • a fastening rod 8 is provided to fasten bottom plate 7 with the upper portion or hollow body 1 of housing 101, thereby clamping filter arrangement 256 together with deflector 3 and cap 266, if provided, therebetween.
  • rod 8 in the embodiment of Fig. 2 includes two threaded ends that can be threadedly, removably screwed into respective threaded holes 267, 268 in bottom plate 7 and hollow body 1.
  • Other connection types such as bayonet connections, can be used at either or both ends of rod 8. It is not excluded that rod 8 can be made integral with either of bottom plate 7 and hollow body 1.
  • bottom plate 7 In an embodiment wherein rod 8 is screwed or otherwise detachably connected with hole 267 of bottom plate 7, such hole 267 is provided in a metal, e.g., brass, member at the center of bottom plate 7 for ensuring desirable mechanical strength of the connection.
  • a metal e.g., brass
  • bottom plate 7 can be formed by molding a plastic disc portion around the brass member.
  • 0-rings such as 670, 671 in Fig. 6, are used to seal between filter element 4 and deflector 3 at the upper end of filter element 4 and bottom plate 7.
  • Fig. 6 does not disclose any O-rings or other sealing elements between filter element 5 and deflector 3 and bottom plate 7, such O-rings or sealing elements can be provided in accordance with other embodiments.
  • Fig. 6 discloses cap 665 and deflector 3 as being separate from hollow body 1, the elements in some embodiments can be made integral with hollow body 1 for reducing the number of parts. In an alternative embodiment, only cap 665 is made integral with hollow body 1, whereas deflector 3 is made as a separate element. Other arrangements are, however, not excluded.
  • a flow of pressurized gas such as compressed air enters filter regulator 100 or 800 through inlet 252 as indicated by arrow A in Fig. 9B.
  • the pressurized gas flow is guided into a swirling pattern by deflector 3 as indicated by arrows B in Fig. 9B.
  • Water, oil or other liquids as well as some solid contaminants, such as debris, contained in the pressurized gas are separated from the pressurized gas flow as a result of centrifugal force caused by the swirling motion and are forced to inner side wall 372 of bowl 2 by such centrifugal force.
  • the separated solid contaminants, water, oil or other liquids slide down inner side wall 372 of bowl 2, pass cup 6 and collect in space 375 below cup 6.
  • cup 6 functions as a baffle that creates a quiet zone, i.e., space 375, at the bottom of bowl 2, and prevents the swirling pressurized gas flow from reaching the solid contaminants, water, oil or other liquids that have been collected at the bottom of bowl 2.
  • the accumulated contamination solid and/or liquid
  • the swirling pressurized gas flow is ultimately kept out of the swirling pressurized gas flow, and remains at the bottom of bowl 2 without being entrained or re-entrained back into the swirling pressurized gas flow, until such accumulated contamination can be removed from bowl 2 via drain cock 30 or automatic drain 22.
  • the swirling pressurized gas flow in space 374 continues to pass through filter element 4 which removes most solid particles.
  • the swirling pressurized gas flow having passed filter element 4 then enters a space 377 between filter elements 4 and 5 as a flow of pre-filtered pressurized gas.
  • the pre-filtered pressurized gas flow continues to pass through filter element 5 (arrows C in Fig. 9B) which will trap the fine solid particles that have passed filter element 4 as well as liquid particles, e.g., droplets of water, oil or other liquids, and/or their vapor.
  • the captured droplets combine or coalesce and are subsequently pulled by gravity down to the lower end of filter element 5 where the coalesced water oil or liquids flow through through holes 359 of bottom plate 7 into the bottom section of cup 6.
  • Bottom plate 7 functions as a baffle that creates a second quiet zone 378 at the bottom of cup 6, and prevent ⁇ the pre-filtered pressurized gas flow from reaching the contaminants and coalesced water, oil or other liquids that have been collected at the bottom of cup 6. The accumulated contamination remains at the bottom of cup 6 without being entrained or re-entrained back into the pressurized gas flow, until it is removed from cup 6 via drain cock 31 or automatic drain 23.
  • quiet zone 375 is separated from quiet zone 378 by the side wall, e.g., 679 (Fig. 6), of the bottom section of cup 6.
  • the clean, filtered pressurized gas that has passed filter element 5 enters an inner space 380 (Figs. 3 and 9B) of filter element 5, and flows upwardly to the interior of hollow body 1 as indicated by arrow D in Fig. 9B.
  • filter regulator 100 or 800 is configured solely for filtering purposes, i.e., without pressure regulation, the filtered pressurized gas will be directly delivered to the outlets 102-105, which in this case are unregulated outlets, and subsequently supplied to connected external devices that run on pressurized gas when the respective valves 653 are open.
  • a pressure regulator such as 281 (Fig. 2), will be required.
  • Pressure regulator 281 can be configured in any manner known in the art.
  • pressure regulator 281 includes a valve 282 that separates the interior of hollow body 1 into two chambers, i.e., an upstream chamber 283 (al so shown in Fig. 9C) and a downstream chamber 284 (al so shown in Fig. 9D).
  • Upstream chamber 283 is in fluid communication with inner space 380 of filter element 5 and receives the filtered pressurized gas therefrom.
  • Upstream chamber 283 is also in fluid communication with unregulated outlet 102 as best seen in Fig. 9C. Since the pressure in upstream chamber 283 is unregulated, upstream chamber 283 is a unregulated chamber and the unregulated, filtered pressurized gas is provided at unregulated outlet 102.
  • Downstream chamber 284 is a regulated chamber meaning that its pressure is regulated by pressure regulator 281.
  • Downstream chamber 284 is in fluid communication with regulated outlets 103-105 as best seen in Fig. 9D, and a regulated, filtered pressurized gas is provided at the regulated outlets 103-105.
  • Valve 282 includes a valve stem 10 and a valve seat 11.
  • valve seat 11 is a flexible member or seal that rests on an end of nut 12, which, in turn, is screw into an threaded recess in an inner wall of hollow body 1.
  • a spring 9 is provided to bias valve stem 10 against valve seat 11, thereby closing valve 282 at no-flow.
  • the provision of nut 12 allows easy assembly of valve 282, wherein spring 9, valve stem 10 and valve seat 11 are placed in a receiving cavity within hollow body 1, and nut 12 is subsequently threaded in to its receiving recess to fix valve 282 in place.
  • Valve stem 10 further extends through aligned central openings of nut 12 and disc 15 to engage an opening (right opening in Fig. 9B) of a through hole 689 (Fig. 6) at a central portion 685 (Fig. 6) of a diaphragm 14.
  • a tapered or rounded end 938 of valve stem 10 rests against a surface around the right opening in Fig. 9B of through hole 689, and therefore, a movement of central portion 685 having through hole 689 to the right (in Fig. 9B) will move valve stem 10 to the right (in Fig. 9B) against action of spring 9.
  • the right opening (in Fig. 9B) of through hole 689 is normally sealingly closed by valve stem 10 and O-ring or seal 24.
  • valve stem 10 is not rigidly fixed to through hole 689 or any other part of central portion 685 or diaphragm 14.
  • a movement of central portion 685 having through hole 689 to the left (in Fig. 9B) will not move valve stem 10 therewith.
  • the right opening (in Fig. 9B) of through hole 689 can be open by a clearance between seal 24 and tapered or rounded end 938 of valve stem 10.
  • central portion 685 of diaphragm 14 is made of a rigid material, such as metal or rigid plastic
  • its peripheral portion 686 (Fig. 6) is made of a deformable material, such as rubber, rubber-coated fabric, or fabric-reinforced rubber.
  • the peripheral portion of 686 in a further embodiment is elastically deformable. Other arrangements and/or materials are, however, not excluded.
  • Peripheral portion of 686 of diaphragm 14 is tightly clamped between the rim of dick 15 and a spring housing 16 when spring housing 16 is fastened against hollow body 1 by way of, e.g., bolts 687 (Fig. 6).
  • Other connection types e.g., threaded connection, between spring housing 16 and hollow body 1 can be used as well.
  • central portion 685 of diaphragm 14 and, hence, valve stem 10 is movable back and forth about a rest position due to the flexibility of peripheral portion of 686 of diaphragm 14.
  • Disc 15 defines a diaphragm chamber 939 (Fig.
  • Diaphragm chamber 939 is in fluid communication with downstream chamber 284 by orifice 688 (Fig. 6) formed in disc 15.
  • An adjustment spring 17 is provided in spring housing 16 and exerts a spring force, when compressed, on central portion 685 of diaphragm 14.
  • the spring force of adjustment spring 17 is adjusted by knob 21 which engages an adjusting screw 19 via a pin 20.
  • An adjusting nut 18 is positioned at an end of adjustment spring 17 and threadedly engaged with adjusting screw 19. When knob 21 is turned, adjusting screw 19 is also turned which makes adjusting nut 18 to compress or release adjustment spring 17.
  • the invention is not limited to the above described configuration of pressure regulator 281 and other arrangements are not excluded.
  • the filtered pressurized gas is supplied from inner space 380 of filter element 5 to upstream chamber 283.
  • the pressure of the filtered pressurized gas in upstream chamber 283 has not yet been regulated and may fluctuate with the line pressure upstream of inlet 252.
  • the unregulated pressure of the filtered pressurized gas in upstream chamber 283 together with spring 9 press valve stem 10 against valve seat 11, thereby closing valve 282.
  • No filtered pressurized gas is provided to downstream chamber 284 and its regulated outlets 103-105.
  • the unregulated filtered pressurized gas is, however, available at unregulated outlet 102 of upstream chamber 283.
  • knob 21 When knob 21 is turned, e.g., clockwise, to adjust a setting of pressure regulator 281 to a desired output regulated pressure, adjustment spring 17 is moved to the left in Fig. 2 (to the right in Fig. 9B). Diaphragm 14 is subsequently moved together with valve stem 10 to the left in Fig. 2 (to the right in Fig. 9B), thereby unseating valve stem 10 from valve seat 11 and opening valve 282.
  • the filtered pressurized gas flows around valve stem 10, as indicated by arrow E in Fig. 9B, through a central opening of valve seat 11 to enter downstream chamber 284.
  • the filtered pressurized gas is now available at regulated outlets 103-105.
  • downstream chamber 284 is in fluid communication with the diaphragm chamber 939 through orifice 688 in disc 15, the pressure in the diaphragm chamber 939 that acts against the action of adjustment spring 17, increases together with the pressure in downstream chamber 284, thereby applying an increasing force on the left side of diaphragm 14.
  • the right opening (in Fig. 9B) of through hole 689 is sealed by seal 24, allowing the pressure to build up in the diaphragm chamber 939.
  • Diaphragm 14 and valve stem 10 move gradually to the right of Fig. 2 (to the left in Fig. 9B), compressing adjustment spring 17.
  • diaphragm 14 and valve stem 10 stops when the pressure in downstream chamber 284, i.e., the pressure in the diaphragm chamber 939, balances the spring force of adjustment spring 17. If one or more of regulated outlets 103-105 is/are open, diaphragm 14 and valve stem 10 remain in the balanced position and maintain the open state of valve 282, thereby ensuring continuous supply of the filtered pressurized gas at the desired or regulated pressure at the open regulated outlets 103-105. When regulated outlets 103-105 are all closed, the balance of forces occurs when valve 282 is closed. The pressure in downstream chamber 284 is now at the desired level regulated by knob 21.
  • the filtered pressurized gas trapped in downstream chamber 284 and diaphragm chamber 939 can be released after regulated outlets 103-105 are closed by turning knob 21 in the opposite direction, i.e., counter clockwise, to reduce the regulated pressure.
  • the pressure of the trapped filtered pressurized gas in downstream chamber 284 and diaphragm chamber 939 will move diaphragm 14 to the left (in Fig. 9B).
  • seal 24 carried by diaphragm 14 will move relative to valve stem 10 to a position corresponding to tapered end 938 of valve stem 10, at which the right opening (in Fig. 9B) of through hole 689 will open allowing the trapped filtered pressurized gas to escape diaphragm chamber 939 and downstream chamber 284 through centre hole 689 of diaphragm 14 into the interior of spring housing 16 to be subsequently vented outside.
  • Pressure gauge 27 mounted on the front side of hollow body 1.
  • Pressure gauge 27 can be of any type of pressure gauges known in the art.
  • Pressure gauge 27 is, in an embodiment, threadedly mounted in a hole 690 (Fig. 6) formed in hollow body 1 via a seal 691.
  • a pressure gauge 26 mounted on the front side of hollow body 1.
  • Pressure gauge 26 can be of any type of pressure gauges known in the art.
  • Pressure gauge 26 is, in an embodiment, threadedly mounted in a hole 692 (Fig. 6) formed in the side wall of bowl 2.
  • Filter regulator 100 in some embodiment further includes a bracket 28 mounted at the bottom of bowl 2 for hanging one or more spray or duster guns as shown in Fig. 7.
  • Guns 794, 793 in Fig. 7 can be spray guns of any type known in the art. Examples for guns 793, 794 are provided in U.S. Patent Application Publication No. US 2003/0230636 which is incorporated by reference herein in its entirety.
  • Filter regulator 100 in further embodiments includes a filter-change indicator 29 mounted at a side of hollow body 1 for indicating when it is necessary to replace either one or some or all filter elements of filter arrangement 256.
  • filter-change indicator 29 indicates when it is required to replace the entire filter arrangement or filter cartridge 256.
  • Filter-change indicator 29 in Fig. 5B is driven by the pressure difference between the line pressure and the pressure of the filtered pressurized gas.
  • filter-change indicator 29 includes first chamber 595 and second chamber 596 separated by a moveable partition, such as a piston 597.
  • a diaphragm or other elements can be used instead of piston 597.
  • First chamber 595 is in fluid communication with space 380 or upstream chamber 283 of hollow body 1 and has the pressure of the filtered pressurized gas.
  • Second chamber 596 is in fluid communication with inlet 252 or space 374 and has the line pressure.
  • the pressure difference acting on piston 597 is oriented to the left in Fig. 5B and corresponds to the pressure drop across filter arrangement 256.
  • Piston 597 is maintained in the retracted position shown in Fig. 5B by action of compression spring 598 which biases piston 597 to the right of Fig. 5B.
  • compression spring 598 biases piston 597 to the right of Fig. 5B.
  • the pressure drop across filter arrangement 256 increases.
  • the force acting on the right of piston 597 also increases.
  • the force acting on the right of piston 597 outbalances the spring force of spring 598 and moves piston 597 to the left of Fig. 5B.
  • an outer end 599 of piston 597 pops out to indicate that filter arrangement 256 need service or replacement.
  • Filter-change indicator 29 can be arranged to individually indicate the clogging state of each filter element in filter arrangement 256 by connecting first chamber 595 and second chamber 596 to the respective spaces, such as 374, 380, 377 etc. Several filter-change indicators can be provided as well.
  • a front pressure adjusting knob (21), a vertical inlet (252) in the back of the filter regulator, four downwardly inclined outlets (102-105) providing both regulated and unregulated clean pressurized gas, and enclosed pressure gauges (26, 27) is unique.
  • the inlet is at a side, only one regulated outlet is provided, the pressure adjusting knob is at the top of the filter regulator, and the gauges are exposed.
  • filter elements 4 and 5 with one inside another is also unique.
  • the filter elements can be coaxial or concentric but off-center arrangements are not excluded, hi the conventional filter regulators, filter elements 4 and 5 are placed in separate bowls and do not provide the 2-in-l configuration of the filter arrangement 256 in accordance with the disclosed embodiments.
  • pressure gauge 26 directly on the wall of hollow body 1 for indicating the line pressure is advantageous.
  • the line pressure is indicated by a separate gauge mounted outside the filter regulator, usually in the air line.
  • a water or liquid collection piece such as cup 6, advantageously allows two drains (22, 23) of two separate chambers (375, 378) to be disposed in a single bowl (2).
  • a water or liquid collection piece such as cup 6
  • only one drain is positioned inside a bowl.
  • valves 253 with hollow body 1 is novel.
  • the valves are separate from the filter regulator and are connected thereto by fittings.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Nozzles (AREA)
  • Centrifugal Separators (AREA)

Abstract

Appareil de filtration, comportant un boîtier présentant une entrée et au moins une sortie, et un ensemble filtrant disposé dans le boîtier en aval de l’entrée et en amont de la sortie pour filtrer un gaz sous pression pénétrant dans le boîtier par l’entrée afin de délivrer un gaz sous pression filtré au niveau de la sortie. L’ensemble filtrant comprend des premier et deuxième éléments filtrants tubulaires. Le premier élément filtrant est reçu dans le deuxième élément filtrant. L’appareil de filtration peut être configuré comme un régulateur filtrant lorsqu’il est équipé d’un régulateur de pression. L’appareil de filtration ou le régulateur filtrant peut être utilisé avec un ou plusieurs pistolets de pulvérisation ou dans un système de pulvérisation.
PCT/US2006/043447 2005-11-08 2006-11-07 Appareil de filtration, regulateur filtrant destine a etre utilise avec un pistolet de pulverisation et systeme de pulverisation l’utilisant WO2007056437A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2008540153A JP2009514675A (ja) 2005-11-08 2006-11-07 フィルタ装置、スプレーガンと共に使用するためのフィルタレギュレータ、およびそれを使用するスプレーシステム
CA2628982A CA2628982C (fr) 2005-11-08 2006-11-07 Appareil de filtration, regulateur filtrant destine a etre utilise avec un pistolet de pulverisation et systeme de pulverisation l'utilisant
GB0808367A GB2445523B (en) 2005-11-08 2006-11-07 Filtering apparatus, filter regulator for use with spray gun and spraying system using the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US73457405P 2005-11-08 2005-11-08
US60/734,574 2005-11-08

Publications (2)

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WO2007056437A1 true WO2007056437A1 (fr) 2007-05-18
WO2007056437A9 WO2007056437A9 (fr) 2008-01-17

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JP (1) JP2009514675A (fr)
BR (1) BRPI0604518A (fr)
CA (1) CA2628982C (fr)
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WO (1) WO2007056437A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102359601A (zh) * 2011-10-13 2012-02-22 陕西航空电气有限责任公司 一种过滤调整器总成
CN106512585A (zh) * 2016-11-30 2017-03-22 南京华阜信息科技有限公司 一种废气的过滤装置
EP3038734A4 (fr) * 2013-08-30 2017-06-21 American Sterilizer Company Ensemble de filtre compact pour éliminer un brouillard et une odeur d'huile d'un flux d'air

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5715812B2 (ja) * 2010-12-15 2015-05-13 株式会社テイエルブイ 気液分離器
JP5630394B2 (ja) * 2011-07-21 2014-11-26 住友金属鉱山株式会社 フィルタ

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5522368A (en) * 1978-08-07 1980-02-18 Trinity Ind Corp Coating apparatus
US4203739A (en) * 1977-08-27 1980-05-20 Filterwerk Mann & Hummel Gmbh Separator device for removing oil from an air stream
DE9318983U1 (de) * 1993-12-10 1994-03-10 De Limon Fluhme GmbH, 40227 Düsseldorf Behälterbaugruppe
DE4442128A1 (de) * 1994-11-26 1996-05-30 Festo Kg Auffangschale für ein Wartungsgerät
WO1998031452A1 (fr) * 1997-01-15 1998-07-23 Filterwerk Mann + Hummel Gmbh Dispositif pour extraire des particules de liquide d'un courant de gaz
EP0878227A2 (fr) * 1997-05-17 1998-11-18 Filterwerk Mann + Hummel GmbH Dispositif et élément pour séparer des liquides de courants de gaz

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61263667A (ja) * 1985-05-16 1986-11-21 Matsui Denki Kogyo Kk ２液吹付発泡装置
JPH0857368A (ja) * 1994-08-22 1996-03-05 Hiroshi Imamura ペイントポンプ

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4203739A (en) * 1977-08-27 1980-05-20 Filterwerk Mann & Hummel Gmbh Separator device for removing oil from an air stream
JPS5522368A (en) * 1978-08-07 1980-02-18 Trinity Ind Corp Coating apparatus
DE9318983U1 (de) * 1993-12-10 1994-03-10 De Limon Fluhme GmbH, 40227 Düsseldorf Behälterbaugruppe
DE4442128A1 (de) * 1994-11-26 1996-05-30 Festo Kg Auffangschale für ein Wartungsgerät
WO1998031452A1 (fr) * 1997-01-15 1998-07-23 Filterwerk Mann + Hummel Gmbh Dispositif pour extraire des particules de liquide d'un courant de gaz
EP0878227A2 (fr) * 1997-05-17 1998-11-18 Filterwerk Mann + Hummel GmbH Dispositif et élément pour séparer des liquides de courants de gaz

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102359601A (zh) * 2011-10-13 2012-02-22 陕西航空电气有限责任公司 一种过滤调整器总成
EP3038734A4 (fr) * 2013-08-30 2017-06-21 American Sterilizer Company Ensemble de filtre compact pour éliminer un brouillard et une odeur d'huile d'un flux d'air
CN106512585A (zh) * 2016-11-30 2017-03-22 南京华阜信息科技有限公司 一种废气的过滤装置

Also Published As

Publication number Publication date
GB2445523A (en) 2008-07-09
CA2628982A1 (fr) 2007-05-18
CA2628982C (fr) 2012-02-21
GB2445523B (en) 2011-10-05
WO2007056437A9 (fr) 2008-01-17
GB0808367D0 (en) 2008-06-18
JP2009514675A (ja) 2009-04-09
BRPI0604518A (pt) 2007-08-28

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