WO2003040000A1 - Continuous positive displacement metering valve - Google Patents
Continuous positive displacement metering valve Download PDFInfo
- Publication number
- WO2003040000A1 WO2003040000A1 PCT/US2001/042749 US0142749W WO03040000A1 WO 2003040000 A1 WO2003040000 A1 WO 2003040000A1 US 0142749 W US0142749 W US 0142749W WO 03040000 A1 WO03040000 A1 WO 03040000A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid
- valve
- meter
- metering
- motor
- Prior art date
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
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/0003—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber
- F04B7/0011—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber and having an oscillating movement
-
- 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
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
Definitions
- This invention relates to continuous positive displacement metering valves, and more particularly to an improved linear metering valve having an innovative dual rack and pinion design that enables a valve to dispense from one meter chamber while another meter chamber is filling.
- Microvalves are known in the prior art for dispensing fluid materials such as adhesives, epoxies, potting compounds, SMT adhesives, two part adhesives, and solder pastes (with solids dispersed therein), and the like, in a repeatable and accurate manner.
- fluid materials such as adhesives, epoxies, potting compounds, SMT adhesives, two part adhesives, and solder pastes (with solids dispersed therein), and the like, in a repeatable and accurate manner.
- these dispensers for fluid material are usd in a wide variety of industries, such as electronic assembly and repair, form in place gasketing, component assembly and sealing, mold making, casting, tool and machine and equipment fabrication and assembly, SMT repair, and a variety of other uses.
- the present invention comprises continuous operation metering valve based on true volumetric positive displacement technology.
- the inventive valve uses an innovative dual rack and drive pinion design that enables the valve to dispense from one meter chamber while the other meter chamber is filling. This provides greater dispense cycle rates because it does not require a fill or reload period.
- the inventive metering valve is capable of almost unlimited precision dispensing with "on-the-fly" adjustment capability. The metering valve is easily disassembled and cleaned, using stainless steel wetted path components and Teflon seals for the widest range of chemical compatibility.
- An integral electronic board mounted to the side of the valve, may be utilized to control the unique 4-way directional valve and motor direction (when not using a rotary encoder control).
- Fig. 1 is a cross-sectional frontal view of a metering valve constructed in accordance with the principles of the present invention
- Fig. 2 is a partial cross-sectional view similar to Fig. 1 ;
- Fig. 3 is a partial cross-sectional side view of the metering valve illustrated in Figs. 1 and 2;
- Fig. 4 is a plan view, in isolation, of a meter rod which forms a part of the present invention
- Fig. 5 is an end view of the meter rod shown in Fig. 4;
- Fig. 6 is a back view of a valve block which forms a part of the present invention.
- Fig. 7 is a side view of the valve block illustrated in Fig. 6;
- Fig. 8 is an front view of the metering block shown in Figs. 6 and 7;
- Fig. 9 is a cross-sectional view of the valve block illustrated in Figs. 6-8, taken along lines 9-9 of Fig. 8;
- Fig. 10 is a cross-sectional view of the valve block illustrated in Figs. 6-9, taken along lines 10-10 of Fig. 8;
- Fig. 11 is a schematic plan view of a directional valve which forms a part of the present invention.
- Fig. 12 is an end view of the directional valve shown in Fig. 11;
- Fig. 13 is a cross-sectional view taken along lines 13-13 of Fig. 11.
- the valve 10 is advantageously constructed in a modular fashion, to include a valve block 12, a meter block 14, and a motor block 16.
- the valve block may be constructed of stainless steel or other suitable material, and comprises in a preferred embodiment a tapered bore 18 for receiving therein a tapered directional valve 20.
- the valve 20 preferably comprises a 4-way tapered seat valve, of a known construction, and is secured within the bore 18 using a nut and washer assembly 22 (Fig. 3).
- a 4-way cylindrical seat valve and corresponding cylindrical bore could be utilized, and the employment of other known directional valve configurations is within the scope of the invention as well.
- the directional valve 20 is actuated, in the illustrated embodiment, using a pivot arm 24 (Fig. 3), which in turn is responsive to a pivot plate 26.
- An air cylinder 28 may be utilized to drive the pivot plate 26, responsive to the actuation of a solenoid valve (not shown), driven in turn by commands from a control circuit/switch 30, or other suitable means.
- the meter block 14 may be constructed, as well, of stainless steel or other suitable material.
- a pair of bores 32 in the meter block 14 are adapted to accommodate corresponding ones of a pair of meter rods 34.
- the meter rods 34 each include a respective meter tip 36, which is particularly adapted to apply displacement pressure against fluid contained in the bore 32 and metering chamber 37 corresponding thereto.
- Such fluid is a fluid to be dispensed, as discussed supra in the background portion of this application, and may include, for example, adhesives, epoxies, potting compounds, SMT adhesives, two part adhesives, and solder pastes (with solids dispersed therein), and the like, or any other desired fluid.
- the fluid is introduced into the valve 10 via a fluid inlet port 38 which preferably comprises a female Luer Lock or 10-32 inlet.
- a syringe mount bracket 40 may be employed, to accommodate industrial syringes containing the fluid to be dispensed, and to be introduced into the valve through the inlet port 38.
- such syringes typically have a fluid capacity of up to 35 cc.
- this housing element may be constructed of tool steel, for example, plated with a hard chrome finish to provide improved wear resistance.
- a motor 42 which may comprise a 6 watt, 24 VDC gear motor, in one preferred embodiment.
- the motor drives a drive gear 44 in the motor housing 16, which housing also contains a spur/idler gear 46 and a thrust washer 48.
- the upper ends of the meter rods 34 are configured as racks in a rack and pinion system.
- the outer perimeters of the meter rods 34 in this region comprise gear teeth 50 which are adapted to engage corresponding teeth on the outer perimeter of the drive gear 44, so that, as in a rack and pinion system, rotation of the drive gear 44 by the motor 42 causes linear actuation of the meter rods 34 in both an upward and a downward direction.
- rotation of the motor in a first direction will cause the respective meter rods 34a and 34b to move linearly in opposing directions, with one moving upwardly and the other downwardly.
- a controlled signal to the drive motor 42 rotates the drive gear 44, which in turn pushes one of the two racks or meter rods 34 in the dispense direction (downwardly) and the other rack or meter rod 34 in the fill direction (upwardly).
- the meter rods 34 are assembled with cup seals to provide a chemically compatible, positive fluid seal. This linear rack movement results in positive volumetric fluid displacement. Low voltage signals to the motor result in a low dispense rate. Small voltage signals result in small shot sizes.
- Each side of the dual meter chamber valve preferably holds 1 cc of fluid volume, although smaller or larger capacity metering valves may be appropriate for certain applications.
- the limit switch on the switch plate 52 reverses the motor polarity and begins dispensing from the opposing metering chamber. Simultaneously with the reverse in motor polarity, the valve 20 is actuated to an alternate position, so that the other metering chamber is established in fluid contact with a fluid outlet 54, which preferably comprises a male Luer Lock.
- a rotary encoder on the motor 42 can provide a closed loop signal that rotates the motor in controlled discrete angular movements that result in precise linear displacement.
- a particular advantage of the present invention is the ability to easily disassemble the system components for easy maintenance and cleaning. Only three screws need be removed to complete the disassembly. Once disassembled, the bores may simply be brushed out to clean them.
- a disposable path version of the inventive metering valve may be employed, wherein the meter block and valve block assemblies may be provided in low cost injection molded plastic for applications where two part materials may set up or where clean up is not safe, as with hazardous materials, or not cost effective.
- a stepper motor could be utilized, if desired.
- a microshot version can be utilized, using a specialized coupling design, where smaller meter rod tips are attached to the standard meter racks.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Multiple-Way Valves (AREA)
- Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
- Reciprocating Pumps (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Taps Or Cocks (AREA)
- Electrophonic Musical Instruments (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Fluid-Driven Valves (AREA)
- Coating Apparatus (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002463721A CA2463721C (en) | 2001-10-15 | 2001-10-15 | Continuous positive displacement metering valve |
PCT/US2001/042749 WO2003040000A1 (en) | 2001-10-15 | 2001-10-15 | Continuous positive displacement metering valve |
AT01981885T ATE357595T1 (en) | 2001-10-15 | 2001-10-15 | CONTINUOUS OPERATION DISPLACEMENT VALVE |
EP01981885A EP1446339B1 (en) | 2001-10-15 | 2001-10-15 | Continuous positive displacement metering valve |
DE60127467T DE60127467T2 (en) | 2001-10-15 | 2001-10-15 | Continuous displacement metering valve |
CN01823712.6A CN1270081C (en) | 2001-10-15 | 2001-10-15 | Continuous positive displacement metering valve |
JP2003542057A JP4164029B2 (en) | 2001-10-15 | 2001-10-15 | Valve that measures continuous positive displacement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2001/042749 WO2003040000A1 (en) | 2001-10-15 | 2001-10-15 | Continuous positive displacement metering valve |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003040000A1 true WO2003040000A1 (en) | 2003-05-15 |
Family
ID=21742974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2001/042749 WO2003040000A1 (en) | 2001-10-15 | 2001-10-15 | Continuous positive displacement metering valve |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1446339B1 (en) |
JP (1) | JP4164029B2 (en) |
CN (1) | CN1270081C (en) |
AT (1) | ATE357595T1 (en) |
CA (1) | CA2463721C (en) |
DE (1) | DE60127467T2 (en) |
WO (1) | WO2003040000A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006051321A1 (en) * | 2006-10-24 | 2008-04-30 | Lenhardt Maschinenbau Gmbh | Method for injecting sealant between panes of double-glazing units uses nozzle connected to two pairs of tanks, each pair being filled with sealant or sealant component which is fed to nozzle by reciprocating piston connected to both tanks |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113776619B (en) * | 2021-09-15 | 2024-03-26 | 智涂机器人(深圳)有限公司 | Liquid meter and metering equipment |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3647325A (en) * | 1968-04-15 | 1972-03-07 | Cons Concrete Ltd | Concrete pump |
US4067666A (en) * | 1976-07-19 | 1978-01-10 | Whiteman Manufacturing Company | Concrete pumping apparatus |
US4880365A (en) * | 1988-02-04 | 1989-11-14 | Austin Richard D | Cement pump with removable discharge chamber cartridge |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1569044A (en) * | 1968-03-29 | 1969-05-30 | ||
GB1425167A (en) * | 1972-06-01 | 1976-02-18 | Lucas Industries Ltd | Apparatus for continuously monitoring fluid flow |
US4708603A (en) * | 1986-06-13 | 1987-11-24 | Eishin Technology Company, Ltd. | Variable displacement pump |
GB9104097D0 (en) * | 1991-02-27 | 1991-04-17 | Univ Hospital London Dev Corp | Computer controlled positive displacement pump for physiological flow stimulation |
IT1254766B (en) * | 1992-02-05 | 1995-10-11 | Univer Spa | PNEUMATIC, ROTARY, DOUBLE RACK ACTUATOR WITH COUNTER-PRESSURE SHOCK ABSORBER. |
-
2001
- 2001-10-15 WO PCT/US2001/042749 patent/WO2003040000A1/en active IP Right Grant
- 2001-10-15 DE DE60127467T patent/DE60127467T2/en not_active Expired - Lifetime
- 2001-10-15 JP JP2003542057A patent/JP4164029B2/en not_active Expired - Fee Related
- 2001-10-15 EP EP01981885A patent/EP1446339B1/en not_active Expired - Lifetime
- 2001-10-15 CA CA002463721A patent/CA2463721C/en not_active Expired - Fee Related
- 2001-10-15 CN CN01823712.6A patent/CN1270081C/en not_active Expired - Fee Related
- 2001-10-15 AT AT01981885T patent/ATE357595T1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3647325A (en) * | 1968-04-15 | 1972-03-07 | Cons Concrete Ltd | Concrete pump |
US4067666A (en) * | 1976-07-19 | 1978-01-10 | Whiteman Manufacturing Company | Concrete pumping apparatus |
US4880365A (en) * | 1988-02-04 | 1989-11-14 | Austin Richard D | Cement pump with removable discharge chamber cartridge |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006051321A1 (en) * | 2006-10-24 | 2008-04-30 | Lenhardt Maschinenbau Gmbh | Method for injecting sealant between panes of double-glazing units uses nozzle connected to two pairs of tanks, each pair being filled with sealant or sealant component which is fed to nozzle by reciprocating piston connected to both tanks |
Also Published As
Publication number | Publication date |
---|---|
CA2463721C (en) | 2009-04-14 |
EP1446339B1 (en) | 2007-03-21 |
JP4164029B2 (en) | 2008-10-08 |
DE60127467T2 (en) | 2007-12-06 |
EP1446339A1 (en) | 2004-08-18 |
EP1446339A4 (en) | 2005-01-12 |
CN1568278A (en) | 2005-01-19 |
ATE357595T1 (en) | 2007-04-15 |
CN1270081C (en) | 2006-08-16 |
CA2463721A1 (en) | 2003-05-15 |
JP2005508011A (en) | 2005-03-24 |
DE60127467D1 (en) | 2007-05-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5127547A (en) | Metering and dispensing apparatus | |
RU2488715C2 (en) | Proportioning pump and its drive | |
ATE100533T1 (en) | PRECISION FLUID DISPENSER. | |
WO2004103888A2 (en) | Systems and methods for providing a dynamically adjustable reciprocating fluid dispenser | |
CA2600682A1 (en) | Precision fluid dispensing system | |
US6220487B1 (en) | Dispensing apparatus | |
WO2006016919A2 (en) | Integrated pump and wash pump | |
US20050072815A1 (en) | Apparatus for dispensing precise amounts of a non-compressible fluid | |
EP1446339B1 (en) | Continuous positive displacement metering valve | |
US7278836B2 (en) | Metering pump | |
ZA200303127B (en) | Automatic pipetting device with rinsing. | |
US6637625B1 (en) | Continuous positive displacement metering valve | |
DE19523370C2 (en) | Method and device for wear and leakage controlled volumetric metering of a flowable component | |
US20040265142A1 (en) | Integrated pump and ceramic valve | |
DE19546299B4 (en) | Double piston pump | |
CN112840124B (en) | Accurate constant-flow reciprocating pump | |
WO2006093591A1 (en) | Fluid metering system | |
WO2006016921A2 (en) | Integrated pump and check valve apparatus | |
EP0408083B1 (en) | Aggressive liquids dosage membrane pump | |
US20060060611A1 (en) | Metering pump, nozzle holder and system for the direct metering | |
CN220215543U (en) | Single-component plunger type rubber valve | |
CA1152379A (en) | Micropumps | |
EP0195618B1 (en) | Metering pump | |
WO1998058201A1 (en) | Metering valve and method for the metered delivery of pasty mediums | |
CZ4087U1 (en) | Device for proportioning liquids |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PH PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 20018237126 Country of ref document: CN Ref document number: 2463721 Country of ref document: CA Ref document number: 2003542057 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2001981885 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2001981885 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 2001981885 Country of ref document: EP |