EP1751427A2 - Pompe a membrane a cinq pistons - Google Patents

Pompe a membrane a cinq pistons

Info

Publication number
EP1751427A2
EP1751427A2 EP05739966A EP05739966A EP1751427A2 EP 1751427 A2 EP1751427 A2 EP 1751427A2 EP 05739966 A EP05739966 A EP 05739966A EP 05739966 A EP05739966 A EP 05739966A EP 1751427 A2 EP1751427 A2 EP 1751427A2
Authority
EP
European Patent Office
Prior art keywords
pump
pump according
bottom pieces
glass filled
diaphragm pump
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.)
Pending
Application number
EP05739966A
Other languages
German (de)
English (en)
Inventor
Mark Fischer
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.)
ITT Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1751427A2 publication Critical patent/EP1751427A2/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/025—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel
    • F04B43/026—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel each plate-like pumping flexible member working in its own pumping chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04—Pumps having electric drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections

Definitions

  • the pseudo- linear motion is used to drive pistons, which first create suction in their individual chambers to bring in the medium, then compress the medium until sufficient pressure is created to discharge the medium.
  • the pumps have a series of check valves allowing the medium to only flow in a specific direction through the pump. In order to prevent internal or external leakage, the seals between the piston chambers and the seals to the outside environment must remain sufficiently compressed.
  • the main shortcoming of the known pumps is that they use screws to retain the compression on the pump head. The use of screws provides only a localized point of force, and can only be in a limited number of locations around the pump head. This allows regions of the components to flex more than others, creating potential internal and external leak paths.
  • Another shortcoming of the known pumps is the limited flow and pressure provided by the other five piston pumps. Because of these shortcomings, the maximum open flow of the known pumps is typically about 5.5 gallons per minute with a maximum pressure of about 65 PSI .
  • the present invention provides a pump having top and bottom pieces coupled together by a coupling device, wherein the coupling device features a circumferential clamp made from a lightweight plastic or other suitable material having two clamping members coupled together so as to provide a substantially uniform circumferential compression along a longitudinal axis of the pump defined in relation to the top and bottom pieces for clamping the top and bottom pieces together.
  • Each clamping member may have a V-shaped interior surface for contacting corresponding a corresponding V-shaped mating surface formed by the top and bottom pieces.
  • Each clamping member may also have one or more strengthening members oriented along a longitudinal axis defined in relation to the top and bottom pieces .
  • the clamping members may include two semi-circular clamping members, each with circumferentially spaced strengthening rib members oriented along the longitudinal of the pump housing.
  • the lightweight plastic or other suitable material may include, by way of example, the following: 30% glass filled Polypropylene, 40% glass filled Polypropylene, Nylon, 30% glass filled Nylon, 40% glass filled Nylon.
  • the circumferential clamp according to the present invention is used in a diaphragm pump, which is operated by using a cam to convert rotational motion from a motor into pseudo-linear motion that is used to drive one or more pistons.
  • the two semi-circular clamping members may be coupled by a hook and pin mechanism on one side and on the other side by a nut and bolt mechanism.
  • the two semi-circular clamping members provide uniform circumferential compression for clamping the top and bottom pieces together.
  • the top and bottom pieces include an upper housing and a motor adapter of a pump head of the pump, and the upper housing and the motor adapter have corresponding circumferential angled surfaces for mating and coupling together.
  • One advantage of the present invention is that it removes the requirement of screws in a pump head assembly by using a series of semicircular clamps to provide uniform compression around the entire diameter of the pump head.
  • the clamps are joined one end by a hook and pin mechanism and at the other end by a nut and bolt.
  • the clamps are assembled around the pump head components and then the bolt is tightened to bring the two halves of the clamp together, which simultaneously brings the pump head components together.
  • the maximum open flow capacity of the pump is greater than 7.0 gallons per minute, while the maximum running pressure of the pump is greater than 80 PSI.
  • the present invention has applications in many different types of pumps in many different types of equipment, including RV's, boats, agricultural sprayers, water carbonation machines, busses, road roller machines, street sweeper machines, drink vending machines, etc.
  • Figure 1 includes Figures 1 (a) to 1 (d) , wherein Figure 1 (a) is a perspective view of a five piston diaphragm pump that is the subject of the invention; Figure 1(b) is a side view of the pump shown in Figure 1 (a) ; Figure 1(c) is a front view of the pump shown in Figure 1 (a) ; and Figure 1 (d) is a cross-sectional view along section lines A-A of the pump shown in Figure 1(c) .
  • Figure 2 includes Figures 2 (a) to 2 (e) , wherein Figure 2 (a) is a view of one clamp for the pump shown in Figure 1 (a) ; Figure 2 (b) is a cross-sectional view along section lines A-A of the clamp shown in Figure 2 (a) ; Figure 2 (c) is a side view of the clamp shown in Figure 2 (a) ; Figure 2 (d) is a cross- sectional view along section lines X-X of the clamp shown in Figure 2 (c) ; and Figure 2 (e) is a back view of the clamp for the pump shown in Figure 2 (a) .
  • Figure 2 (a) is a view of one clamp for the pump shown in Figure 1 (a)
  • Figure 2 (b) is a cross-sectional view along section lines A-A of the clamp shown in Figure 2 (a)
  • Figure 2 (c) is a side view of the clamp shown in Figure 2 (a)
  • Figure 2 (d) is a cross- sectional view along section lines X-X of the
  • Figure 3 includes Figures 3 (a) to 3 (d) , wherein Figure 3 (a) is a view of the other clamp for the pump shown in Figure 1(a); Figure 3(b) is a cross-sectional view along section lines A-A of the clamp shown in Figure 3 (a) ; Figure 3 (c) is a side view of the clamp shown in Figure 3 (a) ; and Figure 3 (d) is a cross-sectional view along section lines B-B of the clamp shown in Figure 3 (c) .
  • Figure 4 includes Figures 4 (a) and 4 (b) , wherein Figure 4 (a) is a view of an upper housing sub-assembly of the pump shown in Figure 1(a); and Figure 4(b) is a cross-sectional view along section lines A-A of the upper housing sub-assembly shown in Figure 4 (a) .
  • Figure 5 includes Figures 5 (a) and 5 (b) , wherein Figure 5 (a) is a view of a valve chamber sub-assembly of the pump shown in Figure 1 (a) ; and Figure 5 (b) is a cross-sectional view along section lines A-A of the valve chamber sub-assembly shown in Figure 5 (a) .
  • Figure 6 includes Figures 6(a) and 6(b), wherein Figure 6(a) is a view of a lower housing sub-assembly of the pump shown in Figure 1(a); and Figure 6(b) is a cross-sectional view along section lines A-A of the lower housing sub-assembly shown in Figure 6 (a) .
  • BEST MODE OF THE INVENTION Figure 1 The Pump Figure 1 shows a pump generally indicated as 10 according to the present invention, having top and bottom pieces 12 and 14 coupled together by a coupling device generally indicated as 16 and resting on a mounting device 17.
  • the pump 10 is shown, by way of example, as a five piston diaphragm pump, although the scope of the invention is not intended to be limited to any particular type or kind of pump 10.
  • the coupling device 16 features a circumferential clamp 16 made from a lightweight plastic or other suitable material and including clamping members 18, 20, each having one or more strengthening members 22 oriented along a longitudinal axis generally indicated as "L "defined in relation to the top and bottom pieces 12 and 14.
  • the circumferential clamp provides a substantially uniform circumferential compression along the longitudinal axis L of the pump 10.
  • the top piece 12 includes an upper housing of the five piston diaphragm pump, while the bottom piece includes a motor 14.
  • the lightweight plastic or other suitable material may include, by way of example, the following: 30% glass filled Polypropylene, 40% glass filled Polypropylene, Nylon, 30% glass filled Nylon, 40% glass filled Nylon, well as other lightweight plastic or other suitable materials now known or later developed in the future.
  • the scope of the invention is not intended to be limited to any particular type or kind of lightweight plastic or material used to make the clamp 16.
  • the five piston pump 10 uses the motor 14 to provide rotational motion.
  • the pump 10 uses a cam 30 attached to a piston plate 32 to convert the rotational motion into a nearly linear motion parallel to the axis of a motor shaft 34.
  • a pump piston 36 and diaphragm 38 are integrated into a single piece, which is attached to the piston plate 32 and nearly linear motion of the piston plate 32 is transferred directly to the diaphragm piston 36.
  • the diaphragm piston 36 is enclosed in a piston chamber 40 that contains inlet and outlet openings (not labelled) , which are controlled and sealed by check valves 42, 44.
  • the diaphragm convolution design contains a variable cross section around the circumference of the pump piston 36.
  • the diaphragm 38 and diaphragm piston 36 are manufactured in a single piece using two different shore hardnesses of a single material .
  • the inner piston is molded using a harder shore Santoprene, and then insert molded into the diaphragm 38.
  • the top surface of the diaphragm piston 36 is shaped to match the inside surface of the piston chamber 40.
  • the clamp design 16 is integrated into the pump head by incorporating specific features into the top piece 12 (upper housing) and bottom piece 14 (motor adapter) of the pump head.
  • the upper housing 12 and motor adapter 14 have angled surfaces 50 identical to the angled inner surface of the clamp 16.
  • the clamp 16 When the clamp 16 is initially assembled to the pump head, it contacts the outer edge of the upper housing 12 and motor adapter's angled surfaces 50, as shown.
  • the clamp 16 moves up along the angled circumferential surfaces 50 which also brings the two pieces 12, 14 closer together providing the compression required for the pump 10 to operate properly.
  • FIG 2 One Clamp Figure 2 shows, by way of example, one clamp 18 having the one or more strengthening ribs 22, one of which is labeled.
  • the clamp 18 includes an upper coupling portion 18a and a lower coupling portion 18b. As shown, the upper coupling portion 18a includes an opening 19 for receiving a bolt 24 ( Figure 1) .
  • the lower coupling portion 18b includes left and right supports 18b' and 18b' ' and a rod 18c extending across the same, as best shown in Figure 2 (e) .
  • the clamp 18 also includes an interior and exterior strengthening ridges 18d (Figure 18(d)) and 18e.
  • the clamp 18 also has interior angled surfaces 18f, 18g that correspond to the angled surfaces 50 in Figure 1(d) for tightly coupling the clamps 18, 20 to the mid-section of the pump 10.
  • FIG 3 The Second Clamp Figure 3 shows, by way of example, the other clamp 20 having the one or more strengthening ribs 22, one of which is labeled.
  • the clamp 20 includes an upper coupling portion 20a and a lower coupling portion 20b.
  • the upper coupling portion 20a includes an opening 21 for receiving a bolt 24 ( Figure 1) .
  • the lower coupling portion 20b includes one or more hooking members 20b' , 20b' ' and 20b' ' ' , as best shown in Figure 2 (e) .
  • the clamp 20 also includes an interior and exterior strengthening ridges 20d (Figure 20(d)) and 20e.
  • the clamp 20 also has interior angled surfaces 2Of, 20g that correspond to the angled surfaces 50 in Figure 1(d) for tightly coupling the clamps 18, 20 to the mid-section of the pump 10 and providing the substantially uniform circumferential compression between the top and bottom pieces 12 and 14.
  • the scope of the invention is not intended to be limited to any particular angle for the surfaces 18f , 18g, 20f, 20g and 50. Embodiments are envisioned using surfaces having many different angles within the scope and spirit of the invention.
  • the clamps 18 and 20 are arranged in relation to the upper and lower pieces 12 and 14 in Figure 1, the one or more strengthening ribs 20b' , 20b' ' and 20b' ' ' are coupled to the rod 18c in Figure 2 (e) so as to form a hook and pin arrangement, the clamp is closed about the midsection of the pump 10, and the bolt 24 is passed (or threaded) through openings 19 and 21 of the upper coupling portions 18a and 20a and fastened thereto, fastened by a nut (not shown) , or some combination thereof, so as to form a bolting mechanism.
  • the coupling arrangement of clamps 18 and 20 in Figures 1-3 is shown by way of example for the purpose of describing the invention herein.
  • the scope of the invention is not intended to be limited to only the bolting arrangement for coupling the respective upper portions 18a, 20a or the hook and pin arrangement for coupling the lower portions 18b, 20b shown and described herein, since embodiments are envisioned using other coupling hardware either know known or later developed in the future for coupling the two clamps 18 and 20 together, including, but not limited to, a hinge in place of the respective lower coupling portions 18b, 20b, and/or a latching arrangement in place of the bolting arrangement.
  • the scope of the invention is not intended to be limited to the type, kind or number of strengthening ribs, or their displacement on the clamps 18 and 20.
  • the strengthening ribs 22 are shown evenly spaced around the clamp 16.
  • FIG. 4 The Upper Housing Sub-Assembly Figure 4 shows the upper housing assembly generally indicated as 60, including an upper housing 62, a backflow valve 64, a discharge insert 66 , an 0-ring 68, a switch diaphragm 70, a pressure switch 72, a bypass poppet 74, a bypass housing 76, one or more 0-rings 78, a bypass spring 80 and screws 82.
  • These elements of the pump 10 form part of the five piston diaphragm pump 10 shown in Figure 1, are shown by way of example, and do not form parts of the overall invention.
  • FIG. 5 The Valve Chamber Sub-Assembly Figure 5 shows the valve chamber sub-assembly generally indicated as 90, including a valve chamber 92 and one or more check valves indicated as 94. These elements of the pump 10 form part of the five piston diaphragm pump 10 shown in Figure 1, are shown by way of example, and do not form parts of the overall invention.
  • FIG. 6 The Lower Housing Sub-Assembly Figure 6 shows the lower housing sub-assembly generally indicated as 100, including a lower housing 102, a diaphragm 104, an outer piston plate 106 and a cam 108. These elements of the pump 10 form part of the five piston diaphragm pump 10 shown in Figure 1, are shown by way of example, and do not form parts of the overall invention.
  • Possible Applications Possible applications of the invention include: RV's, boats, agricultural sprayers, water carbonation machines, busses, road roller machines, street sweeper machines, drink vending machines.
  • the scope of the invention is not intended to be limited to any particular type or kind of application.
  • the invention comprises the features of construction, combination of elements, and arrangement of parts which will be exemplified in the construction hereinafter set forth. It will thus be seen that the objects set forth above, and those made apparent from the preceding description, are efficiently attained and, since certain changes may be made in the above construction without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

Pompe comportant des parties supérieure et inférieure reliées par un dispositif de couplage. Cette pompe est munie d'une bride circulaire en matière plastique légère dotée d'éléments de serrage, chacun assorti d'un ou de plusieurs éléments de renforcement orientés selon un axe longitudinal défini par rapport aux parties supérieure et inférieure. Les éléments de serrage peuvent compter deux éléments de serrage semi-circulaires, chacun avec des nervures de renfort espacées à la périphérie et orientées selon l'axe longitudinal du boîtier de pompe.
EP05739966A 2004-04-21 2005-04-21 Pompe a membrane a cinq pistons Pending EP1751427A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56465604P 2004-04-21 2004-04-21
PCT/US2005/014063 WO2005106247A2 (fr) 2004-04-21 2005-04-21 Pompe a membrane a cinq pistons

Publications (1)

Publication Number Publication Date
EP1751427A2 true EP1751427A2 (fr) 2007-02-14

Family

ID=35242279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05739966A Pending EP1751427A2 (fr) 2004-04-21 2005-04-21 Pompe a membrane a cinq pistons

Country Status (5)

Country Link
US (1) US20050249610A1 (fr)
EP (1) EP1751427A2 (fr)
CN (1) CN101142408A (fr)
AU (1) AU2005238957A1 (fr)
WO (1) WO2005106247A2 (fr)

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US9068567B2 (en) * 2005-06-23 2015-06-30 Graco Minnesota Inc Reciprocating piston pump serviceable without tools
EP2655886A4 (fr) 2010-12-21 2018-05-09 Pentair Filtration Solutions, LLC Système de moteur et de pompe à diaphragme et procédé
CN103174629B (zh) * 2013-04-07 2015-11-18 佛山市威灵洗涤电机制造有限公司 一种增压泵
FR3012538B1 (fr) * 2013-10-30 2018-05-18 Dosatron International Pompe a membrane et dispositif a clapets pour une telle pompe
US20150337818A1 (en) * 2014-05-20 2015-11-26 Ying Lin Cai Vibration-reducing structure for five-compressing-chamber diaphragm pump
CN104033365B (zh) * 2014-07-03 2016-08-24 李新法 微型五缸隔膜泵
JP6467280B2 (ja) * 2015-04-22 2019-02-13 住友ゴム工業株式会社 ダイアフラムポンプ
EP3452721B1 (fr) * 2016-05-06 2020-04-15 Graco Minnesota Inc. Pompe à membrane modulaire à entraînement mécanique
US10677238B2 (en) * 2017-11-08 2020-06-09 Ingersoll-Rand Industrial U.S., Inc. Filled resin layer separated pump housing
CN108980032B (zh) * 2018-08-07 2019-10-18 中建八局第二建设有限公司 一种混凝土泵管出料口开关工具
CA3072832A1 (fr) 2019-02-19 2020-08-19 Duravent, Inc. Systeme de verrouillage de conduit pour un appareil
GB2589677A (en) * 2019-08-13 2021-06-09 Blue White Ind Ltd Methods of metering delivery of caustic soda for treatment of water
US11485653B2 (en) * 2019-08-13 2022-11-01 Blue-White Industries, Ltd. Methods of metering delivery of caustic soda for treatment of water

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Also Published As

Publication number Publication date
CN101142408A (zh) 2008-03-12
AU2005238957A1 (en) 2005-11-10
US20050249610A1 (en) 2005-11-10
WO2005106247A2 (fr) 2005-11-10
WO2005106247A3 (fr) 2007-06-28

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