WO2004053613A1 - Reducteur de pression - Google Patents

Reducteur de pression Download PDF

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Publication number
WO2004053613A1
WO2004053613A1 PCT/JP2003/014586 JP0314586W WO2004053613A1 WO 2004053613 A1 WO2004053613 A1 WO 2004053613A1 JP 0314586 W JP0314586 W JP 0314586W WO 2004053613 A1 WO2004053613 A1 WO 2004053613A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
control panel
panel
pressure control
reducing valve
Prior art date
Application number
PCT/JP2003/014586
Other languages
English (en)
Japanese (ja)
Inventor
Masatoshi Asai
Original Assignee
Max Co., Ltd.
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 Max Co., Ltd. filed Critical Max Co., Ltd.
Priority to AU2003280827A priority Critical patent/AU2003280827A1/en
Publication of WO2004053613A1 publication Critical patent/WO2004053613A1/fr

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
    • G05D16/107—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger with a spring-loaded piston in combination with a spring-loaded slideable obturator that move together over range of motion during normal operation

Definitions

  • the present invention provides a method for applying a predetermined pressure from a compressed air source in a high-pressure range generated by a compressor to a normal-pressure pneumatic device having a working air pressure in a normal-pressure range and a high-pressure pneumatic gear having a higher working pressure range.
  • the present invention relates to a pressure reducing valve capable of supplying compressed air at a high pressure and capable of reducing high-pressure compressed air to any pressure from a normal pressure range to a high pressure range.
  • a compressed air supply device that can supply compressed air to both the normal pressure tool and the high pressure tool includes a compressed air extraction device that has a dedicated pressure reducing valve and a dedicated socket corresponding to each tool. Is provided.
  • a power bra that can be connected to both a high-pressure dedicated plug and a normal-pressure dedicated plug is installed so that compressed air in each pressure range can be supplied to the normal-pressure tool and the high-pressure tool via this force bra.
  • Compressed air extraction devices have already been proposed. This compressed air extraction device requires a pressure reducing valve that can regulate the pressure from the upper limit pressure in the high pressure range to the lower limit pressure in the normal pressure range.
  • a normal pressure reducing valve used in the high pressure range has a large constant pressure panel. The compressed air on the secondary side is acted on the piston that is urged in step 2, and the opening / closing valve is operated by the movement of the piston, and the secondary side is adjusted by adjusting the panel force of the pressure control panel. The pressure is controlled.
  • the panel constant is large as above
  • a pressure reducing valve that uses a pressure control panel when the pressure of the pressure control panel is adjusted to be in the normal pressure range, the sensitivity increases and the sliding stroke of the biston decreases, resulting in the opening of the on-off valve. Therefore, the flow rate of compressed air supplied to the secondary side at normal pressure may not be large. If the flow rate of the compressed air cannot be increased as described above, there is a problem that the performance of the tool in the normal pressure range cannot be sufficiently exhibited.
  • a pressure reducing valve that can be set from the normal pressure range to the high pressure range using a small pressure control panel with a constant number of panels, it is necessary to set the entire length of the pressure control panel large. There is a problem that the adjustment operation amount is increased particularly in a high-pressure range, and the operability for the adjustment is impaired, because the adjustment becomes large and the setting sensitivity becomes small.
  • the conventional pressure reducing valve is equipped with a pressure control panel consisting of two coil springs with different spring constants in parallel, and when the set pressure is low, only one of the pressure control panels acts on the piston, and the high pressure is set. When the pressure is high, the two pressure control panels act on the piston, so that the sensitivity can be increased at a high set pressure and the pressure can be quickly adjusted to the specified pressure.
  • a pressure reducing valve that facilitates adjustment (for example, see Japanese Patent Application Laid-Open No. H11-07325).
  • a coil spring-shaped panel is used as a pressure adjusting panel, and one of the panels is housed concentrically inside the other panel with different winding diameters.
  • the panel wound in this manner is concentrically arranged, the panel is displaced as the panel expands and contracts, and a part of one panel is squeezed between the other panels. Pressure setting may not be possible. Disclosure of the invention
  • the present invention solves the above-mentioned problems in the prior art, and can set an arbitrary pressure in all pressure ranges from a high pressure range to a normal pressure range. It is an object of the present invention to provide a pressure reducing valve which can be sufficiently large and does not cause problems such as intrusion of a pressure control panel.
  • the pressure reducing valve of the present invention provides a compressed air pressure in a high pressure range.
  • a pressure reducing valve that reduces the pressure to an arbitrary pressure from the high pressure range to the normal pressure range and outputs the pressure.It opens and closes between the primary port connected to the high-pressure compressed air source and the secondary port connected to the tool side.
  • a control means for variably setting the panel force of the pressure control panel wherein the pressure control panel comprises a first pressure control panel and a second pressure control panel, and the first pressure control The panel and the second pressure control panel are formed with the winding directions reversed to each other, and the other pressure control panel is housed concentrically inside one pressure control panel, and when the pressure in the normal pressure range is set, A first constant pressure panel having a small panel constant is caused to act on the piston, Characterized in that said force setting time of the first pressure regulating panel and the second regulating ⁇ Ba was so as to act on the Bisuton.
  • the panel constant of the second pressure control panel is set higher than that of the first pressure control panel.
  • a position where the second pressure adjusting panel acts on the biston by operating the adjusting means is set to be equal to or higher than the upper limit pressure of the working air pressure of the normal pressure tool.
  • the panel constant of the first pressure control panel is set to be equal to the panel constant of a normal pressure reducing valve for normal pressure.
  • FIG. 1 is a configuration diagram showing a compressed air extracting system using the pressure reducing valve of the present invention.
  • FIG. 2 is a cross-sectional view of the pressure reducing valve according to the example of the present invention.
  • FIG. 3 is a cross-sectional view showing the same pressure reducing valve set in the low-pressure region as in FIG. 2.
  • FIG. 4 is a cross-sectional view showing the same pressure reducing valve set in the low-pressure region as in FIG. 10 is a pressure reducing valve, 11 is a primary port, 1 2 is a secondary port, 15 is an on-off valve, 20 is a biston, 21 is a pressure control panel, and 2 2 is a first pressure control panel.
  • Reference numeral 23 denotes a second pressure control panel
  • reference numeral 24 denotes a panel receiver
  • reference numeral 25 denotes an adjusting means
  • reference numeral 26 denotes an operation dial. Best mode for implementing
  • FIG. 1 shows an example of a compressed air supply system using the pressure reducing valve of the present invention.
  • Compressor 2 driven by electric motor 1 compresses air to a high pressure corresponding to the operating compressed air pressure of a pneumatic drive tool for high pressure.
  • the high pressure compressed air is stored in the air tank 3.
  • the air tank 3 is connected to a normal pressure dedicated plug P1 attached to the normal pressure tool driven by compressed air at normal pressure through a pressure reducing valve 10 and compressed air at high pressure.
  • a compressed air extraction device 5 having a socket 4 to which any high-pressure dedicated plug P2 attached to the driven high-pressure tool can be connected is connected.
  • reference numeral 6 denotes a pressure gauge for displaying the air pressure value in the air tank 3
  • reference numeral 7 denotes a pressure gauge for displaying the secondary-side air pressure value reduced by the pressure reducing valve 10.
  • the pressure reducing valve 10 reduces the pressure of the high-pressure compressed air stored in the air tank 3 to an arbitrary adjustment pressure from the working pressure range of the normal pressure tool to the working pressure range of the high-pressure tool, and the compressed air extracting device 5 To supply.
  • the compressed air extracting device 5 is formed with a compressed air supply port 8 connected to the pressure reducing valve 10 to supply the compressed air decompressed by the pressure reducing valve 10 at one end, and is always provided at the opposite end.
  • a female socket 4 is formed in which both plugs Pl and P2 having different shapes can be mounted on the respective tool sides of the pressure tool and the high-pressure tool.
  • the compressed air extracting device 5 supplies the compressed air supplied to the compressed air supply port 8 to the high-pressure dedicated plug P 2, and always supplies the compressed air to the socket 4.
  • the pressure-specific plug P1 is installed, the compressed air adjusted to the upper limit pressure of the normal pressure range by the pressure adjustment mechanism formed in the compressed air extraction device 5 is sent to the normal pressure plug P2. Is to be supplied.
  • the pressure reducing valve 10 has a primary port 11 connected to the air tank 3 and a secondary port 1 connected to the compressed air supply port 8 of the compressed air extracting device 5.
  • 2 is formed in the valve housing 13, and an on-off valve 15 for opening and closing the passage 14 communicating between the ports 11 and 12 is provided in the valve housing 13. .
  • the on-off valve 15 comes in contact with and separates from the valve seat 16 formed in the valve housing 13. Closes or communicates between the primary port 11 and the secondary port 12.
  • the on-off valve 15 is urged by an urging panel 17 in a direction to shut off the passage 14.
  • a pressure receiving surface 18 on which compressed air on the secondary side acts is formed, and the opening / closing valve contacts the opening / closing valve 15.
  • a piston 20 having a body formed with an operation unit 19 for opening and closing 15 is slidably disposed.
  • the operation unit 19 is connected to the on-off valve 1.
  • a pressure regulator 21 for abutting the on / off valve 15 to bias the piston 20 in a direction in which the on-off valve 15 is opened.
  • the pressure control panel 21 is composed of a first pressure control panel 22 having a relatively small panel constant K1 suitable for setting the pressure in the normal pressure range, and a first pressure control panel 22 having a relatively large panel constant K2 suitable for setting the pressure in the high pressure range.
  • the first pressure control panel 22 has a large winding diameter so that it can be arranged along the inner peripheral surface of the valve housing 13, and the second pressure control panel 23 includes a second pressure control panel 23.
  • the panel 23 has a small winding diameter so that it can be accommodated inside the first pressure control panel 22.
  • the first pressure control panel 22 has a longer free length than the second pressure control panel 23, and is adjusted between the upper surface of the piston 20 and the panel receiver 24.
  • the panel receiver 24 When the panel receiver 24 is moved by the adjusting means 25 screwed to 3, the panel force acting on the biston 20 is varied. By rotating the operation dial 26 attached to the end of the adjustment means 25, the panel receiver 24 is moved forward and backward in the direction of the piston 20 and the set pressure is set to normal pressure.
  • the first pressure control panel 22 presses and biases the biston 20 from the pressure range to the high pressure range.
  • the first pressure control panel 22 and the second pressure control panel 23 are both formed in a coil spring shape and formed so that their winding directions are opposite to each other. It is housed inside the first pressure control panel 22 having a large winding diameter and arranged concentrically with each other, and the upper end side of the second pressure control panel 23 is the center of the spring receiver 24.
  • the second pressure regulating panel 23 is disposed so as to be fitted to and held by a shaft portion 27 protruding toward the biston 20 in the direction of the biston 20. I have.
  • the second pressure control panel 23 having a relatively large panel constant is provided by adjusting means
  • the other end is separated from the biston 20.
  • the piston comes into contact with the biston 2 20 is pressed and urged. Therefore, in the high-pressure range, the first pressure-regulating spring 22 and the second pressure-regulating spring 23 bias the piston 20.
  • the panel fcK1 of the first pressure-regulating panel 22 is in the normal pressure range. The same as the normal pressure reducing valve used in the above, the timing at which the second pressure control panel 23 comes into contact with the piston 20 and the second pressure control panel 23 presses and biases the piston 20 is set.
  • the upper limit of the working air pressure of the normal pressure tool is set to 0.98 MPa, for example, the instantaneous flow rate and adjustment operability of the pressure reducing valve when using the normal pressure tool at an arbitrary pressure in the normal pressure range are reduced. It can be set the same as a conventional pressure reducing valve, which can avoid losing workability.
  • the operation of the operation dial 26 moves the panel receiver 24 further in the direction of the biston 20 so that the lower end of the second pressure control panel 23 is moved. Acts so as to abut the piston 20 and press the piston 20 together with the first pressure control panel 22. Therefore, the panel constant of the panel force that presses the biston 20 is the sum (K 1 + K 2) of the panel constant K 1 of the first pressure control panel 22 and the panel constant K 2 of the second pressure control panel. Therefore, the pressure setting in the high-pressure region can be quickly adjusted to a desired setting pressure as the setting sensitivity increases.
  • the first pressure adjustment panel having a small panel constant and the second pressure adjustment panel having a large panel constant are housed concentrically by housing the other pressure adjustment spring inside one pressure adjustment panel.
  • the piston is applied to the biston via the first pressure control panel having a small panel constant
  • the second pressure control panel is applied to the biston.
  • the pressure can be set from the high pressure range to the normal pressure range without increasing the shape of the pressure reducing valve, and at the set pressure in the normal pressure range, the opening amount of the open / close valve can be increased and compression can be performed.
  • the flow rate of air increases, and the performance of a normal pressure tool can be fully demonstrated.
  • the second pressure adjusting panel having a large panel constant is made to act on the piston, so that the set sensitivity can be increased and the set pressure can be set quickly.
  • the winding directions of the first pressure control panel and the second pressure control panel are formed to be opposite to each other, and the other pressure control spring is concentrically housed and arranged inside one pressure control panel. Therefore, when the pressure adjusting panel expands and contracts by the operation of the adjusting means, it is possible to solve a problem that the two springs intrude into each other so that an appropriate pressure cannot be set.
  • the panel constant of the first pressure control panel is set to be equal to the panel constant of the normal pressure reducing valve for normal pressure, and the position where the second pressure control panel acts on the piston by operating the adjusting means is set to the normal pressure. Since the pressure is set to be equal to or higher than the upper limit pressure of the tool, the adjustment operation in the normal pressure range using the normal pressure tool can be operated in the same way as the conventional pressure reducing valve, improving workability.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Fluid Pressure (AREA)
  • Safety Valves (AREA)

Abstract

L'invention concerne un ressort régulateur de pression (21) agissant sur un piston (20) qui reçoit une pression d'air comprimé secondaire. Ledit ressort comprend des premier et second ressorts régulateurs (22, 23) ayant une constante d'élasticité importante. Ces deux ressorts (22, 23) ont des directions d'enroulement opposées, et l'un d'eux est reçu coaxial dans l'autre. Le premier (22) a une faible constante d'élasticité, agissant sur le piston (20) lorsque la pression est établie à un niveau dans une zone de pression normale, et le second (23) a une constante d'élasticité élevée, agissant sur le piston (20) lorsque la pression est établie à un niveau dans une zone de pression élevée.
PCT/JP2003/014586 2002-12-12 2003-11-17 Reducteur de pression WO2004053613A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003280827A AU2003280827A1 (en) 2002-12-12 2003-11-17 Pressure reducing valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002-361313 2002-12-12
JP2002361313A JP2004192462A (ja) 2002-12-12 2002-12-12 減圧弁

Publications (1)

Publication Number Publication Date
WO2004053613A1 true WO2004053613A1 (fr) 2004-06-24

Family

ID=32501039

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2003/014586 WO2004053613A1 (fr) 2002-12-12 2003-11-17 Reducteur de pression

Country Status (3)

Country Link
JP (1) JP2004192462A (fr)
AU (1) AU2003280827A1 (fr)
WO (1) WO2004053613A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006070909A1 (fr) * 2004-12-27 2006-07-06 Jtekt Corporation Detendeur
CN101691892B (zh) * 2009-12-31 2010-12-08 张家和 内联动式减压阀

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4506496B2 (ja) 2004-11-12 2010-07-21 株式会社ジェイテクト 減圧弁
DE102013021057B4 (de) * 2013-12-18 2017-06-08 Grammer Ag Druckminderer
CN104019257B (zh) * 2014-06-05 2017-10-20 中国科学院等离子体物理研究所 一种新型真空泄压阀
JP7009525B2 (ja) 2020-01-31 2022-01-25 株式会社日本ピスコ 調圧弁

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5065665A (en) * 1988-12-05 1991-11-19 Hirotaka Manufacturing Co., Ltd. Directional control valve for pneumatic cylinder
JPH0449020Y2 (fr) * 1990-08-10 1992-11-18

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5065665A (en) * 1988-12-05 1991-11-19 Hirotaka Manufacturing Co., Ltd. Directional control valve for pneumatic cylinder
JPH0449020Y2 (fr) * 1990-08-10 1992-11-18

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006070909A1 (fr) * 2004-12-27 2006-07-06 Jtekt Corporation Detendeur
US9400506B2 (en) 2004-12-27 2016-07-26 Toyota Jidosha Kabushiki Kaisha Pressure reducer
CN101691892B (zh) * 2009-12-31 2010-12-08 张家和 内联动式减压阀

Also Published As

Publication number Publication date
JP2004192462A (ja) 2004-07-08
AU2003280827A1 (en) 2004-06-30

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