US3722858A - Flow regulating device - Google Patents

Flow regulating device Download PDF

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Publication number
US3722858A
US3722858A US00098311A US3722858DA US3722858A US 3722858 A US3722858 A US 3722858A US 00098311 A US00098311 A US 00098311A US 3722858D A US3722858D A US 3722858DA US 3722858 A US3722858 A US 3722858A
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United States
Prior art keywords
sleeve
opening
cavity
bore
flow regulating
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Expired - Lifetime
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US00098311A
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English (en)
Inventor
M Sugimoto
Y Moriyama
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Individual
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Individual
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Publication of US3722858A publication Critical patent/US3722858A/en
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    • 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
    • F15B21/045—Compensating for variations in viscosity or temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F16K5/0407—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/10—Means for additional adjustment of the rate of flow

Definitions

  • ABSTRACT A flow regulating valve for hydraulic systems including a housing having inlet and outlet ports anda port crossing bore, a sleeve mounted in the bore of the housing and provided with a first opening communicating with the inlet port and a second opening on the opposite side communicating with the outlet port,
  • the present invention relates to a flow regulating valve for use in pressure fluid, or hydraulic systems, such as hydraulically operated apparatus, machine tools, and the like, and more particularly to a flow regulating valve which is capable of maintaining a constant flow at a uniform rate regardless of changes of viscosity of the operating fluid by changes of ambient temperature.
  • a flow regulating valve which tries to meet the above requirements, and which comprises two hollow cylinders coaxially coupled to each other tightly, but slidably, or rotatably.
  • One of the cylinders is provided with an opening in the circumference, the opening being a curved triangle forming an isoceles triangle when the cylinder surface is developed into a plane.
  • Each side of the triangular opening terminates as a knife edge.
  • the other cylinder has an oblong opening on the circumference and each side of the oblong is also knife edged.
  • the conventional flow regulating valve briefly described above has a drawback in that there is considerable leakage of operating fluid from portions of the device other than the sharp-edged orifice, said other portions including the circumferential space extending from the sharp-edged orifice between the two hollow cylinders. Moreover, the amount of leakage is greatly affected by changes in the rate of flow of the operating fluid through the sharp-edged orifice. It is very difficult to precisely control flow rates of the operating fluid because of the leakage, particularly when a very low flow rate of the fluid to be passed is determined by a small opening of the sharp-edged orifice.
  • a further disadvantage of the above-described conventional flow regulating valve is that the opening in one cylinder is formed with knife edges at the bases of sloping walls which are tapered wider toward the inlet port side. Consequently, the slopes of the knife edge walls become the main wetted perimeters in controlling low flow rates of the operating fluid. This increases the undesirable effect of changing the flow due to the viscosity of the operating fluid moving along the knife edge slops, and prevents precise control of low rates of flow of pressure fluid through the valve.
  • the present invention provides a flow regulating valve which is capable of maintaining a substantially precisely regulated flow rate regardless of changes in viscosity of the pressure fluid caused by changes of ambient temperature, and regardless of high, or low, rates of flow of the pressure fluid.
  • the valve embodies a housing having inlet and outlet ports, a hollow sleeve within the housing and having openings in communication with said ports, and a throttle spool mounted within the sleeve and provided with a cavity of decreasing size communicating at its larger end with the inlet opening of the sleeve, and at its smaller end with the outlet opening of the sleeve, so that relative movement of the sleeve and throttle spool serves to adjust the size of a sharp-edged orifice defined by the overlap of the reduced end of the cavity of the spool with the outlet opening of the sleeve.
  • a first important object of the invention is, therefore, to provide a flow regulating valve which is capable of minimizing the leakage of operating fluid from portions of the valve other than its sharp-edged orifice, so that a substantially constant and precisely regulated pressure fluid flow is obtained with good temperature compensating effect, and regardless of changes of ambient temperature, and even at very low rate of flow of the pressure fluid through the device.
  • Another important object of the invention is to provide a flow regulating valve, having the above mentioned characteristics, wherein adjustment of the flow of the operating fluid can easily be accomplished and wherein no re-adjustment is required due to changes in viscosity of the pressure fluid.
  • a still further object of the invention is to provide a flow regulating valve, having the above described characteristics, whose construction is much simplified and thereby the cost of fabrication is greatly lowered, while the efficiency of operation is considerably increased.
  • FIG. 1 is a central vertical section of a preferred embodiment of the present invention
  • FIG. 2 is a fragmentary, enlarged, sectional view of the embodiment shown in FIG. 1;
  • FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 1, and looking in the direction of the arrows;
  • FIG. 4 is a perspective view of the throttle spool forming the core of the regulator shown in FIG. 1;
  • FIG. is a perspective view of the sleeve which surrounds the throttle spool of FIG. 4;
  • FIG. 6 depicts a cross-sectional view corresponding to FIG. 3, but with the throttle spool turned so that the sharp-edged orifice defined by the throttle spool and sleeve has the smallest opening thereof;
  • FIG. 7 is a fragmentary perspective view to an enlarged scale of the sharp-edged orifice corresponding with the condition shown in FIG. 6;
  • FIG. 8 is a cross-sectional view corresponding to FIG. 3, but with the throttle spool turned so that the sharp-edged orifice defined by the spool and sleeve has the largest opening thereof.
  • the regulating valve comprises a housing 1 provided with an inlet port A at the upper side, an outlet port B at the lower side, and a stepped cylindrical bore 2 communicating with the inlet and outlet ports.
  • a sleeve 3, of pipe-shape, is mounted within the bore 2 of the'housing and fixedly secured by a key 5.
  • the sleeve has an axial bore 4, and as best shown in FIG.
  • a collar 3a at one end, a round hole 6 which opens to inlet port A of the housing through one side, and a triangular opening 7 cut through the wall of the sleeve, at the side opposite the round hole 6, so as to communicate with the outlet port B of the housing.
  • All three sides 8 of the triangular opening 7 taper inwardly from the outer surface to the inner surface of the sleeve 3 to form knife edges at the inner surface of the sleeve, as best shown in FIG. 7.
  • the throttle spool is provided with a small diameter portion 10 at one end, a cylindrical cavity 11 with a spherical end portion passing from one side toward the other, and a circular hole 12 tapering inwardly from the spherical end portion of cavity 1 l to form a knife edge opening 13 at said other side of the spool.
  • the pressure plate 14, having a hole 15 concentric with the axis of the throttle spool, is secured on the housing 1 to fix the axial positions of the sleeve 3 and the throttle spool 9.
  • An adjusting dial 17 is secured by a pin 16 tothe small diameter portion l0 of the throttle spool 9, said Small diameter portion 10 jutting out of the housing 1 through the hole 15 of the pressure plate 14.
  • Unnumbered O-rings are provided, as shown in FIG. 1, to seal the throttle spool to the sleeve and the sleeve to the housing so as to prevent leakage of pres-- sure fluid therefrom and restrict the flow of pressure fluid to the ports, openings and orifices mentioned above.
  • the ports and orifices in the housing, sleeve and throttle spool are so designed as to have the sleeve 3 and the throttle spool 9 urged toward the outlet port B of the housing 1 by pressure fluid delivered into the cavity 11 from the Inlet port A.
  • the above described regulator operates in the following manner. Pressure fluid delivered to the inlet port A, of the housing, flows into the round hole 6 of the sleeve 3, and into the cavity 11, of the throttle spool 9. The pressure fluid is finally discharged through the outlet port B of the housing after the quantity per unit time, or rate of flow, is reduced by the hole 12 tapering inwardly from the spherical cavity at the bottom end of cavity 11 into the knife edge opening 13, and the sharpedged orifice R, defined by overlap of opening 13 with the triangular knife-edged hole 7 in the sleeve 3. The quantity of pressure fluid discharged from the outlet port B in a given unit of time is controlled by rotation of the adjusting dial 17 to change the size of the orifice R.
  • the pressure fluid urges the sleeve 3 and the throttle spool 9 toward the outlet port B, and at the outlet port B side, the spaces between the cylindrical bore 2 of the housing and the outer surface of the sleeve 3, and between the bore 4 of the sleeve 3 and the throttle spool 9 become very small to minimize possible leakage from places other than the sharp-edged orifice R.
  • FIG. 7 depicts the position of the various parts and the size of the sharp-edged orifice R when a very small rate of flow of the pressure fluid, as from 30cc. 100cc. per minute, passes out through outlet port B.
  • FIG. 8 depicts the size of the sharp-edged orifice R when it is largest and the flow rate Of the pressure fluid is greatest. It is obvious that in discharging'pressure fluid at a maximum rate, the same precise adjustment as for low flow rate is obtainable since the effects of viscosity and of leakage, from places other than through the sharp-edged orifice R, are smaller, the sleeve 3 and the throttle spool 9 being urged with greater force toward the outlet port B, as shown in FIG. 8
  • a flow regulating valve for pressure fluid systems comprising a housing having inlet and outlet ports and a bore crossing said ports, a sleeve mounted in said bore and provided with a first opening in 'one side communicatingwith said inlet port and a triangular opening in the opposite side communicating with said outlet port, said triangular opening having tapered walls sloping outwardly toward the outlet port and terminating in knife edges at the inner surface of the sleeve, a throttle spool mounted movably in the bore of said sleeve and having a cavity of decreasing size passing through the spool for communicating at its larger end with said inlet port and said first opening of the sleeve, and at its reduced end with said outlet port and said triangular opening of the sleeve, said cavity terminating in its reduced end in a hole of circular shape, and means for relatively moving said throttle spool and sleeve with respect to one another to form a sharp-edged orifice of adjustable size defined by the overlap of said circular hole
  • a flow regulating valve according to claim' 1 wherein said bore of said housing is cylindrical, said sleeve being also cylindrical with a cylindrical bore therein, said throttle spool being a cylinder, and said means for relatively moving said sleeve and throttle spool comprises means for rotating one with respect to the other.
  • a flow regulating valve according to claim 1 wherein said circular hole at the reduced end of the throttle cavity is defined by a knife edge.
  • a flow regulating valve according to claim 4 wherein said cavity of said throttle spool is cylindrical for a major portion of its volume and decreases in size for a minor portion of its volume terminating in said circularhole, the knife edge of said circular hole being formed by an annular slope tapering inwardly toward said outlet port of the housing.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sliding Valves (AREA)
  • Multiple-Way Valves (AREA)
  • Flow Control (AREA)
  • Taps Or Cocks (AREA)
US00098311A 1969-12-29 1970-12-15 Flow regulating device Expired - Lifetime US3722858A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45001407A JPS5241486B1 (ja) 1969-12-29 1969-12-29

Publications (1)

Publication Number Publication Date
US3722858A true US3722858A (en) 1973-03-27

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ID=11500623

Family Applications (1)

Application Number Title Priority Date Filing Date
US00098311A Expired - Lifetime US3722858A (en) 1969-12-29 1970-12-15 Flow regulating device

Country Status (5)

Country Link
US (1) US3722858A (ja)
JP (1) JPS5241486B1 (ja)
DE (1) DE2063589C3 (ja)
FR (1) FR2074423A5 (ja)
GB (1) GB1291659A (ja)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532411A1 (fr) * 1982-08-31 1984-03-02 Bosch Gmbh Robert Installation d'echange de chaleur notamment pour le chauffage de la cabine d'un vehicule automobile
US5755683A (en) * 1995-06-07 1998-05-26 Deka Products Limited Partnership Stopcock valve
US5817068A (en) * 1995-02-27 1998-10-06 Urrutia; Hector Apparatus for controlling flow of biological/medical fluids to and from a patient
US6165154A (en) * 1995-06-07 2000-12-26 Deka Products Limited Partnership Cassette for intravenous-line flow-control system
US6364857B1 (en) 1995-06-07 2002-04-02 Deka Products Limited Partnership Cassette for intravenous-line flow-control system
US6464667B1 (en) 1997-08-22 2002-10-15 Deka Products Limited Partnership Method and cassette for delivering intravenous drugs
US6709417B1 (en) 1995-06-07 2004-03-23 Deka Products Limited Partnership Valve for intravenous-line flow-control system
US20050095141A1 (en) * 2003-10-30 2005-05-05 Deka Products Limited Partnership System and method for pumping fluid using a pump cassette
US20050095576A1 (en) * 2003-10-30 2005-05-05 Deka Products Limited Partnership System, device, and method for mixing a substance with a liquid
US20060008359A1 (en) * 2004-07-09 2006-01-12 Masafumi Ito Variable displacement compressor
US20060245881A1 (en) * 2005-02-04 2006-11-02 Biggerstaff Jimmy M Priority hydraulic flow diverter control assembly
US20070107787A1 (en) * 2005-11-17 2007-05-17 Moretz Technology, Llc Rotary shift valve for automatic transmission systems
US20100025603A1 (en) * 2008-08-01 2010-02-04 Brian Burlage Apparatus to control a fluid flow characteristic of fluid regulator bypass valves
US7662139B2 (en) 2003-10-30 2010-02-16 Deka Products Limited Partnership Pump cassette with spiking assembly
CN103277529A (zh) * 2013-06-21 2013-09-04 合肥力威汽车油泵有限公司 一种液压件测试试验台用加载阀
US20160305556A1 (en) * 2013-12-13 2016-10-20 Hilti Aktiengesellschaft Metering valve for diamond drilling
US10294450B2 (en) 2015-10-09 2019-05-21 Deka Products Limited Partnership Fluid pumping and bioreactor system
US11299705B2 (en) 2016-11-07 2022-04-12 Deka Products Limited Partnership System and method for creating tissue
CN115854937A (zh) * 2023-02-24 2023-03-28 山西聚贤石墨新材料有限公司 一种石墨电极检测装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3201020C2 (de) * 1982-01-15 1983-12-22 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Drehschiebereinrichtung zum Steuern strömender Medien, insbesondere zum Dosieren der Durchströmmengen brennstoffreicher Gase bei Staustrahl-Raketentriebwerken
TW541405B (en) * 2001-08-15 2003-07-11 Amada Co Ltd Directional control valve

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532411A1 (fr) * 1982-08-31 1984-03-02 Bosch Gmbh Robert Installation d'echange de chaleur notamment pour le chauffage de la cabine d'un vehicule automobile
US5817068A (en) * 1995-02-27 1998-10-06 Urrutia; Hector Apparatus for controlling flow of biological/medical fluids to and from a patient
US5755683A (en) * 1995-06-07 1998-05-26 Deka Products Limited Partnership Stopcock valve
US6165154A (en) * 1995-06-07 2000-12-26 Deka Products Limited Partnership Cassette for intravenous-line flow-control system
US6364857B1 (en) 1995-06-07 2002-04-02 Deka Products Limited Partnership Cassette for intravenous-line flow-control system
US6709417B1 (en) 1995-06-07 2004-03-23 Deka Products Limited Partnership Valve for intravenous-line flow-control system
US20070085049A1 (en) * 1997-08-22 2007-04-19 Deka Research And Development Stopcock Valve
US6464667B1 (en) 1997-08-22 2002-10-15 Deka Products Limited Partnership Method and cassette for delivering intravenous drugs
US20040176724A1 (en) * 1997-08-22 2004-09-09 Kamen Dean L, Cassette and method for drug preparation and delivery
US9408966B2 (en) 1997-08-22 2016-08-09 Deka Products Limited Partnership System and method for drug preparation and delivery
US7214210B2 (en) 1997-08-22 2007-05-08 Deka Products Limited Partnership Cassette and method for drug preparation and delivery
US20050094485A1 (en) * 2003-10-30 2005-05-05 Deka Products Limited Partnership System, device, and method for mixing liquids
US7632078B2 (en) 2003-10-30 2009-12-15 Deka Products Limited Partnership Pump cassette bank
US20050095154A1 (en) * 2003-10-30 2005-05-05 Deka Products Limited Partnership Bezel assembly for pneumatic control
US20050094483A1 (en) * 2003-10-30 2005-05-05 Deka Products Limited Partnership Two-stage mixing system, apparatus, and method
US20050095141A1 (en) * 2003-10-30 2005-05-05 Deka Products Limited Partnership System and method for pumping fluid using a pump cassette
US8158102B2 (en) 2003-10-30 2012-04-17 Deka Products Limited Partnership System, device, and method for mixing a substance with a liquid
US20050095152A1 (en) * 2003-10-30 2005-05-05 Deka Products Limited Partnership Door locking mechanism
US20050095576A1 (en) * 2003-10-30 2005-05-05 Deka Products Limited Partnership System, device, and method for mixing a substance with a liquid
US7662139B2 (en) 2003-10-30 2010-02-16 Deka Products Limited Partnership Pump cassette with spiking assembly
US7354190B2 (en) 2003-10-30 2008-04-08 Deka Products Limited Partnership Two-stage mixing system, apparatus, and method
US7461968B2 (en) 2003-10-30 2008-12-09 Deka Products Limited Partnership System, device, and method for mixing liquids
US20050095153A1 (en) * 2003-10-30 2005-05-05 Deka Products Limited Partnership Pump cassette bank
US7632080B2 (en) 2003-10-30 2009-12-15 Deka Products Limited Partnership Bezel assembly for pneumatic control
US20060008359A1 (en) * 2004-07-09 2006-01-12 Masafumi Ito Variable displacement compressor
US7530797B2 (en) * 2004-07-09 2009-05-12 Kabushiki Kaisha Toyota Jidoshokki Variable displacement compressor
US20060245881A1 (en) * 2005-02-04 2006-11-02 Biggerstaff Jimmy M Priority hydraulic flow diverter control assembly
US7927060B2 (en) * 2005-02-04 2011-04-19 Bayne Machine Works, Inc. Priority hydraulic flow diverter control assembly
US20070107787A1 (en) * 2005-11-17 2007-05-17 Moretz Technology, Llc Rotary shift valve for automatic transmission systems
CN102105729B (zh) * 2008-08-01 2013-06-26 费希尔控制国际公司 用于控制流体调节器旁通阀的流体流动特性的装置
US8087638B2 (en) * 2008-08-01 2012-01-03 Fisher Controls International, Llc Apparatus to control a fluid flow characteristic of fluid regulator bypass valves
US20100025603A1 (en) * 2008-08-01 2010-02-04 Brian Burlage Apparatus to control a fluid flow characteristic of fluid regulator bypass valves
CN103277529A (zh) * 2013-06-21 2013-09-04 合肥力威汽车油泵有限公司 一种液压件测试试验台用加载阀
US20160305556A1 (en) * 2013-12-13 2016-10-20 Hilti Aktiengesellschaft Metering valve for diamond drilling
US10294450B2 (en) 2015-10-09 2019-05-21 Deka Products Limited Partnership Fluid pumping and bioreactor system
US10808218B2 (en) 2015-10-09 2020-10-20 Deka Products Limited Partnership Fluid pumping and bioreactor system
US11299705B2 (en) 2016-11-07 2022-04-12 Deka Products Limited Partnership System and method for creating tissue
US11939566B2 (en) 2016-11-07 2024-03-26 Deka Products Limited Partnership System and method for creating tissue
CN115854937A (zh) * 2023-02-24 2023-03-28 山西聚贤石墨新材料有限公司 一种石墨电极检测装置

Also Published As

Publication number Publication date
FR2074423A5 (ja) 1971-10-01
JPS5241486B1 (ja) 1977-10-19
GB1291659A (en) 1972-10-04
DE2063589B2 (ja) 1974-10-17
DE2063589C3 (de) 1975-06-05
DE2063589A1 (de) 1971-07-08

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