WO2020054000A1 - 圧縮流体吐出制御装置 - Google Patents
圧縮流体吐出制御装置 Download PDFInfo
- Publication number
- WO2020054000A1 WO2020054000A1 PCT/JP2018/033873 JP2018033873W WO2020054000A1 WO 2020054000 A1 WO2020054000 A1 WO 2020054000A1 JP 2018033873 W JP2018033873 W JP 2018033873W WO 2020054000 A1 WO2020054000 A1 WO 2020054000A1
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- WIPO (PCT)
- Prior art keywords
- valve
- compressed fluid
- chamber
- control device
- discharge
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3006—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being actuated by the pressure of the fluid to be sprayed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
- B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
- B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
- B05B1/3053—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the actuating means being a solenoid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
- B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
- B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
- B05B1/306—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the actuating means being a fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
- B05B12/087—Flow or presssure regulators, i.e. non-electric unitary devices comprising a sensing element, e.g. a piston or a membrane, and a controlling element, e.g. a valve
- B05B12/088—Flow or presssure regulators, i.e. non-electric unitary devices comprising a sensing element, e.g. a piston or a membrane, and a controlling element, e.g. a valve the sensing element being a flexible member, e.g. membrane, diaphragm, bellows
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
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- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/52—Means for additional adjustment of the rate of flow
- F16K1/523—Means for additional adjustment of the rate of flow for limiting the maximum flow rate, using a stop
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
- F16K31/402—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a diaphragm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Definitions
- the present invention relates to a compressed fluid discharge control device that controls the discharge of a compressed fluid.
- a compressed fluid mainly compressed air
- a compressed fluid discharge control device for performing such blowing for example, a gun-shaped device as disclosed in JP-A-2005-246356 and JP-A-2014-83518 can be mentioned.
- This type of gun-shaped compressed fluid discharge control device is sometimes referred to as an “air blow gun”, a “fluid blow gun”, or a “discharge gun”, but is hereinafter referred to as an “air blow gun”.
- This type of air blow gun includes a housing including a handle gripped by an operator, and a lever rotatably provided with respect to the housing.
- a lever When the operator presses the lever with the finger toward the handle, an on-off valve interposed between the supply path and the discharge path formed in the handle opens, and the supply path and the discharge path communicate with each other. Accordingly, the compressed air supplied from the compressed air supply source to the supply path flows through the discharge path, and is further discharged from the opening (discharge port) of the discharge path.
- the operator must hold the lever to perform discharge with the air blow gun. That is, the operator must operate the air blow gun at the work place where the discharge is performed. For this reason, for example, when it is necessary to operate the air blow gun in a place where water splashes scatter, there is a problem that the operator gets wet.
- a main object of the present invention is to provide a compressed fluid discharge control device which can be electrically opened and closed without directly opening and closing by an operator.
- Another object of the present invention is to provide a compressed fluid discharge control device that can be opened and closed by remote control.
- a compressed fluid discharge control device that controls discharge of a compressed fluid
- a supply passage for supplying the compressed fluid and a discharge passage formed with a discharge port for discharging the compressed fluid are formed, and a valve chamber provided with a valve seat is formed, By being seated or separated from the valve seat, the communication path between the supply path and the discharge path is cut off or connected, and a diaphragm valve in which a pilot passage is formed,
- a pilot chamber opening / closing valve that opens or closes a pilot chamber in which the compressed fluid is introduced from the supply path via the pilot passage, Has,
- the pilot chamber on-off valve is an electromagnetic valve that is opened when energized and closed when energized,
- a compressed fluid discharge control device is provided in which the pilot chamber opening / closing valve is opened to open the pilot chamber, the diaphragm valve is separated from the valve seat, and the supply path and the discharge path communicate with each other.
- an electromagnetic valve is used as a pilot chamber opening / closing valve for opening / closing a pilot chamber for opening / closing a diaphragm valve.
- the pilot chamber can be opened and closed to open and close the diaphragm valve. That is, there is no need for the operator to perform the opening and closing work at the work place. Therefore, even in a work place where water splashes scatter, it is possible to avoid a situation in which the worker gets wet.
- the compressed fluid that has reached the valve chamber flows into the discharge path at once, and is discharged from one end (discharge port) of the discharge path that is open. Therefore, a high discharge pressure (peak pressure) is instantaneously obtained immediately after the start of the discharge.
- peak pressure peak pressure
- a storage chamber for storing the compressed fluid between the supply path and the valve chamber.
- the compressed fluid previously stored in the storage chamber flows into the discharge path at once with the opening of the diaphragm valve. Therefore, a higher discharge pressure can be easily obtained.
- the efficiency of removing cutting powder, dust and the like is further improved.
- the storage chamber be configured as a variable-capacity inner chamber whose capacity can be changed. This makes it possible to set the upper limit of the discharge pressure (peak pressure) of the compressed fluid according to the application.
- the storage chamber When the storage chamber is provided, it is preferable to provide a flow control valve for adjusting the flow rate of the compressed fluid introduced from the supply path into the storage chamber. In this case, for example, by reducing the flow control valve, the flow rate of the compressed fluid introduced into the storage chamber can be reduced. If the diaphragm valve is continuously opened after the discharge at the high discharge pressure is completed, the compressed fluid passes through the storage chamber, reaches the discharge path, and is discharged at a low pressure. That is, blowing at a low pressure can be continued.
- the dynamic friction force of a moving object is smaller than the static friction force of a stationary object. For this reason, even if a high discharge pressure is applied and a low discharge pressure is applied to the cutting powder or dust in a moving state, the cutting powder or dust can be maintained in a moving state. Therefore, it is possible to continuously remove such foreign matter.
- the pilot chamber opening / closing valve communicates or cuts off the communication between the pilot chamber and the discharge path.
- the compressed fluid in the pilot chamber flows into the discharge path. That is, the compressed fluid in the pilot chamber can also be discharged and used for removing dust and the like. Therefore, the peak pressure immediately after the start of discharge is further increased, and further energy saving can be achieved.
- ⁇ ⁇ Response speed can be further increased by reducing the stroke of the diaphragm valve. That is, the peak pressure can be obtained immediately after the operator operates the opening / closing operation member.
- a contact member that can be displaced with respect to the valve body constituting the diaphragm valve is provided, and the displacement of the valve body is regulated by the contact member contacting the valve body. Is preferred. That is, it is preferable to provide a displacement amount regulating means.
- the maximum opening of the diaphragm valve can be made smaller than the designed maximum opening when the contact member is not brought into contact with the valve body. Accordingly, the flow rate of the pressure fluid derived from the diaphragm valve becomes smaller than the design flow rate. Therefore, it is possible to prevent the pressure fluid from being discharged more than the required amount.
- the stop position of the valve body can be changed. That is, the maximum opening of the diaphragm valve can be arbitrarily changed.
- Pilot room on-off valve (solenoid valve) can be installed at a place away from the work place.
- the pilot chamber and the discharge passage may be connected to the valve chamber of the pilot chamber opening / closing valve via a pipe.
- the pilot chamber opening / closing valve can be kept away from the work area by the length of the pipe.
- the pilot chamber opening / closing valve that opens and closes the pilot chamber
- an electromagnetic valve that opens when energized and closes when energization is stopped is employed.
- the solenoid valve can be electrically opened and closed. That is, the operator can open and close the pilot chamber on-off valve without performing manual work in the workplace. Therefore, it is possible to prevent the worker from getting wet.
- opening and closing the pilot chamber opens and closes the diaphragm valve.
- the diaphragm valve When the diaphragm valve is opened, the compressed fluid that has reached the valve chamber flows into the discharge path at once and is discharged from the discharge port, so immediately after the discharge starts, regardless of the operation speed of the opening / closing operation member.
- a high discharge pressure peak pressure
- FIG. 2 is an enlarged sectional view of a main part of the compressed fluid discharge control device of FIG. 1.
- FIG. 2 is an enlarged sectional view of a main part when an electromagnetic valve and a diaphragm valve constituting the compressed fluid discharge control device of FIG. 1 are opened.
- 5 is a graph showing a change over time in a discharge pressure.
- FIG. 4 is a schematic configuration diagram of a compressed fluid discharge control device provided with a solenoid valve separated from a second housing via a pipe. It is an important section enlarged longitudinal section of the compressed fluid discharge control device concerning a 2nd embodiment of the present invention.
- FIG. 4 is a schematic configuration diagram of a compressed fluid discharge control device provided with a solenoid valve separated from a second housing via a pipe.
- FIG. 7 is a partially enlarged sectional view of the compressed fluid discharge control device of FIG. 6.
- FIG. 7 is an enlarged sectional view of a main part when an electromagnetic valve and a diaphragm valve constituting the compressed fluid discharge control device of FIG. 6 are in an open state.
- FIG. 1 is a schematic side sectional view of a main part of a compressed fluid discharge control device 10 according to the first embodiment.
- This compressed fluid discharge control device 10 has a first housing 14 in which a storage chamber 12 is formed as an inner chamber, a second housing 18 in which a diaphragm valve 16 is housed, and a holder holding an electromagnetic valve 20 which is a pilot chamber opening / closing valve. 22.
- the compressed fluid discharge control device 10 is a so-called stationary type in which a box-shaped first housing 14 is used by being positioned and fixed at a predetermined location in a work place.
- the first housing 14 has a hollow main body 26 having a first supply path 24 formed on a side.
- a flow control valve 30 is provided in the first supply path 24, and an L-shaped pipe joint 32 is connected to the flow control valve 30.
- the flow control valve 30 extends linearly along the longitudinal direction of the first housing 14, and the connecting portion faces upward.
- the connected portion of the vertical portion 34 forming the L-shaped pipe joint 32 is connected to this connecting portion.
- a supply pipe (not shown) is connected to the connected part of the horizontal part 36 configuring the L-shaped pipe joint 32. Therefore, the appearance is such that the supply pipe branches off from the flow control valve 30. Note that compressed air supplied from a compressed air supply source (not shown) flows through the supply pipe.
- a flow control passage 42 including an orifice 40 is formed inside the flow control valve 30.
- the needle 44 enters the orifice 40 so as to be able to retreat (retreat).
- the flow control passage 42 is closed, and when the needle 44 retreats and retreats from the orifice 40, the flow control passage 42 is opened.
- a hollow interior opening is formed in the upper part of the main body 26.
- the lid portion 50 By providing the lid portion 50 in this opening, the hollow interior is closed and the storage chamber 12 is formed. Needless to say, the storage chamber 12 and the first supply path 24 communicate with each other.
- the lid 50 and the main body 26 are joined by, for example, screws (not shown). In this case, the main body 26 can be removed from the lid 50 by loosening the screws.
- the capacity of the storage chamber 12 can be changed by replacing the main body 26 with one having a different volume inside the hollow forming the storage chamber 12 together with the lid 50.
- the space between the lid 50 and the main body 26 is sealed by the first seal member 52.
- a communication path 54 is formed in the lid 50 along the thickness direction.
- a cylindrical member 56 having a substantially T-shaped cross section is fitted into the communication passage 54.
- a communication hole 58 having a smaller opening width than the communication passage 54 is formed in the cylindrical member 56. The space between the tubular member 56 and the lid 50 is sealed by the second seal member 60.
- the second housing 18 has a first holding member 62 and a second holding member 64 for holding the diaphragm valve 16.
- a second supply path 66 opening toward the communication hole 58 and a valve chamber 68 connected to the second supply path 66 and circulating in the second housing 18 are formed.
- a discharge passage 70 extending along the longitudinal direction of the second housing 18 communicates with the valve chamber 68. That is, the valve chamber 68 is interposed between the second supply path 66 and the discharge path 70 and communicates with the two flow paths 66 and 70.
- a first valve seat 72 protruding in an annular shape is provided at an opening of the discharge passage 70 facing the valve chamber 68.
- the diaphragm valve 16 has a substantially cylindrical thick valve body 74 and a thinner and larger-diameter flange 76 than the valve body 74.
- the outer peripheral edge of the flange portion 76 is sandwiched between the first holding member 62 and the second holding member 64, so that the diaphragm valve 16 is held by the first holding member 62 and the second holding member 64.
- valve body 74 has a short vertical hole 78 extending along the diameter from a side wall portion thereof, and is connected so as to be substantially perpendicular to the vertical hole 78 and extends toward the second holding member 64. Is formed.
- the valve chamber 68 and the pilot chamber 82 (described later) communicate with each other through the vertical hole 78 and the horizontal hole 80. That is, the vertical hole 78 and the horizontal hole 80 constitute a first pilot passage for introducing compressed air into the pilot chamber 82.
- a recess is formed on the end face of the second holding member 64 on the side facing the diaphragm valve 16.
- a pilot chamber 82 is formed by the concave portion and the end face of the diaphragm valve 16 on the side facing the second holding member 64.
- a second pilot passage 84 extending linearly toward the holder 22 is connected to the pilot chamber 82.
- One end of the discharge path 70 is a discharge port opened to the atmosphere.
- a predetermined member such as a nozzle or a diffuser (both not shown) may be attached to the discharge port.
- the outlet of the pilot outlet passage 86 that is bent or inclined and extends toward the holder 22 is opened in the discharge path 70 on the way to the discharge port.
- the holder 22 has a valve inlet passage 90, a valve mounting opening 92, and a valve outlet passage 94 formed therein.
- the valve inlet passage 90 extends from the outlet opening of the second pilot passage 84 to the valve mounting port 92, and the valve outlet passage 94 extends from the valve mounting port 92 to the inlet of the pilot outlet passage 86.
- a second valve seat 96 protruding in an annular shape is provided in the vicinity of the opening facing the valve mounting port 92 in the valve outlet passage 94.
- the space between the second holding member 64 and the holder 22 is sealed by the third seal member 98 and the fourth seal member 100.
- the solenoid valve 20 is attached to the valve attachment port 92. Specifically, a first blade (not shown) is formed on the inner peripheral wall of the valve mounting port 92. On the other hand, the solenoid valve 20 has a cylindrical body 102 having a substantially T-shaped cross section, and a second blade portion (not shown) is formed on the outer peripheral wall of the large-diameter portion 104 constituting the cylindrical body 102.
- the electromagnetic valve 20 is held by the holder 22 by the engagement of the second blade portion with the first blade portion.
- the valve mounting port 92 plays a role as a valve chamber of the solenoid valve 20.
- the electromagnetic valve 20 includes an electromagnetic coil 112 formed by winding a wire around a bobbin 110, a fixed core 116 and a movable core 116 inserted into an insertion hole 114 of the bobbin 110. 118, and a valve body 120 held at the tip of the movable core 118.
- the bobbin 110, the movable core 118, and the valve body 120 are housed in a casing 122.
- An exposed hole 124 is formed in the right closed surface of the casing 122, and a small-diameter cylindrical portion 126 constituting the fixed core 116 is exposed from the exposed hole 124.
- a concave groove 128 is formed on the side surface of the cylindrical portion 126, and the fixed core 116 is positioned and fixed in the insertion hole 114 by engaging a C-shaped clip 130 with the concave groove 128.
- an engagement hole 140 is formed.
- an inner hook 142 is formed so as to project inward in the diameter direction so as to reduce the inner diameter of the engagement hole 140.
- the head of the valve body 120 made of rubber is inserted into the engagement hole 140.
- the head has a shape of a truncated cone expanding in a tapered shape, and the largest diameter portion is hooked on the inner hook portion 142.
- the valve body 120 is prevented from falling out of the engagement hole 140.
- the head is elastically contracted by being pressed in the radial direction. After being inserted into the engagement hole 140, the head returns to its original shape by elasticity, so that the largest diameter portion of the head is hooked on the inner hooking portion 142.
- An outer hook 144 is provided near the outer side of the inner hook 142 in the vicinity thereof.
- a small-diameter end portion of a return spring 146 whose outer fitting has a truncated cone shape abuts on the outer hooking portion 144.
- the large-diameter end of the return spring 146 is in contact with a step of the collar member 132 formed by the difference in diameter.
- the return spring 146 resiliently biases the movable core 118 toward the valve outlet passage 94 side. Therefore, when power is not supplied, the solenoid valve 20 is closed when the equal-diameter cylindrical portion of the valve body 120 is seated on the second valve seat 96.
- the solenoid valve 20 is provided with an energizing terminal (not shown), and a power source 152 is electrically connected to the energizing terminal via a conducting wire 150.
- the current supplied from the power supply 152 flows to the electromagnetic coil 112 via the conducting wire 150 and the conduction terminal.
- a control switch 156 that operates under the control of the control circuit 154 is provided at a position of the conductor 150 that is separated from the solenoid valve 20.
- the compressed fluid discharge control device 10 is basically configured as described above, and the operation and effect thereof will be described next.
- the compressed air is supplied from the compressed air supply source to the first supply path 24 via the supply pipe and the flow control valve 30, and is introduced into the storage chamber 12 from the first supply path 24.
- the compressed air is supplied to the second supply path 66, the communication path 54 (the communication hole 58), the valve chamber 68, the vertical hole 78 and the horizontal hole 80 formed in the diaphragm valve 16 ( It flows to the pilot chamber 82 via the first pilot passage).
- the compressed air is further introduced into the valve mounting port 92 via the second pilot passage 84 and the valve inlet passage 90. Since the valve element 120 is seated on the second valve seat 96, further flow of compressed air is prevented.
- the diaphragm valve 16 maintains the state where the valve body 74 is seated on the first valve seat 72. That is, the diaphragm valve 16 is closed, so that communication between the storage chamber 12 and the discharge path 70 is shut off.
- the operator operates the control switch 156 via the control circuit 154.
- the control switch 156 is closed (turned on), and current is supplied from the power source 152 to the electromagnetic coil 112 via the conducting wire 150 and the conducting terminal. That is, electricity is supplied to the solenoid valve 20, and the fixed core 116 is magnetized.
- the movable core 118 is displaced so as to be attracted to the fixed core 116, as shown in FIG.
- the valve body 120 held at the left end of the movable core 118 is separated from the second valve seat 96. Accordingly, the return spring 146 is compressed.
- the valve inlet passage 90 and the valve outlet passage 94 communicate with each other via the valve mounting port 92. Therefore, the pilot chamber 82 communicates with the discharge passage 70 via the second pilot passage 84, the valve inlet passage 90, the valve mounting port 92 (the valve chamber of the solenoid valve 20), the valve outlet passage 94, and the pilot outlet passage 86. Therefore, the compressed air in the pilot chamber 82 flows through the discharge path 70 and is discharged from the discharge port. By closing the control switch 156 in this way, the pilot chamber 82 is opened and the compressed air in the pilot chamber 82 is discharged.
- the internal pressure of the pilot chamber 82 becomes smaller than the internal pressure of the valve chamber 68. Therefore, the valve body 74 of the diaphragm valve 16 is pressed by the compressed air in the valve chamber 68, and as a result, the valve body 74 is quickly separated from the first valve seat 72. That is, the diaphragm valve 16 opens quickly. As described above, by opening the diaphragm valve 16 with the discharge of the compressed air in the pilot chamber 82, a quick response speed can be obtained.
- the storage chamber 12 communicates with the discharge path 70.
- the needle 44 constituting the flow control valve 30 does not completely close the flow control passage 42, the first supply passage 24 also communicates with the discharge passage 70.
- the storage chamber 12 is filled with a predetermined volume of compressed air in advance. In other words, a predetermined amount of compressed air has already been stored in the storage chamber 12. Therefore, the compressed air in the storage chamber 12 is introduced into the discharge path 70 via the second supply path 66 and the valve chamber 68, and the compressed air sent from the pilot chamber 82 to the discharge path 70 as described above. Merge with air. Therefore, a large amount of compressed air is discharged from the discharge port at once. Therefore, as shown by the solid line in FIG. 4, a high discharge pressure (peak pressure) is instantaneously obtained immediately after the start of the discharge (blow).
- peak pressure peak pressure
- the upper limit of the peak pressure can be set according to the application. That is, the compressed air is prevented from being discharged at an unnecessarily high pressure.
- the discharge pressure in the compressed fluid discharge control device is indicated by a broken line. From FIG. 4, it can be seen that in the prior art, the discharge pressure is substantially constant from the start to the end of the discharge, whereas in the first embodiment, the peak pressure is obtained immediately after the start of the discharge. As described above, in the first embodiment, the diaphragm valve 16 is opened by opening the pilot chamber 82, and the compressed air stored in the storage chamber 12 is discharged at a stroke. Therefore, the peak pressure can be easily obtained by a simple operation of closing the control switch 156.
- control circuit 154 by installing the control circuit 154 at a location away from the place where the blow is performed, the control switch 156 is closed at a place different from the work place where the blow is performed, in other words, the electromagnetic valve 20 is remotely operated. It becomes possible. Therefore, even in a work place where water splashes scatter, it is possible to avoid a situation in which the worker gets wet.
- the flow rate adjusting valve 30 may be opened to refill the storage chamber 12 with compressed air.
- the first supply path 24 and the storage chamber 12 communicate with each other.
- the compressed air is supplied via the first supply path 24.
- the diaphragm valve 16 is open, the compressed air flows through the storage chamber 12 without being stored in the storage chamber 12, and flows through the second supply path 66 and the valve chamber 68 to the discharge path 70. I do. Therefore, the discharge of the compressed air is continued.
- the pressure (discharge pressure) of the compressed air discharged from the discharge port is smaller than the discharge pressure immediately after the discharge. That is, as shown in FIG. 4, the blowing is continued under a constant low pressure.
- the discharge pressure at this time can be adjusted according to the opening degree of the flow control valve 30. That is, the discharge pressure increases as the opening of the flow control valve 30 increases.
- the discharge pressure immediately after the discharge is increased by first discharging the compressed air stored in the storage chamber 12 (to obtain the peak pressure), and thereafter the discharge pressure is reduced.
- the static friction force acting on a stationary object is smaller than the dynamic friction force acting on a moving object. Therefore, even when the discharge pressure is changed as described above, the cutting pressure, the dust, and the like are changed from the stationary state to the moving state by the peak pressure immediately after the discharge, and the movement of the cutting powder, the dust, and the like is changed by the low discharge pressure thereafter. State can be maintained. For this reason, cutting powder, dust, etc. can be easily removed.
- the compressed air retained in the pilot chamber 82, the second pilot passage 84, and the valve inlet passage 90 is used for blowing as described above. For this reason, the peak pressure immediately after the discharge can be further increased, and the consumption of the compressed air can be reduced to further save energy.
- control switch 156 may be opened (turned off) by an operator's operation or automatically controlled by the control circuit 154. Accordingly, the power supply to the electromagnetic coil 112 is stopped, and the excitation action of the fixed core 116 disappears. Therefore, the return spring 146 which has been compressed is expanded, and the movable core 118 is elastically urged. As a result, the valve body 120 is displaced toward the valve outlet passage 94 and seats on the second valve seat 96 (see FIGS. 1 and 2).
- the solenoid valve 20 is closed and the communication between the pilot chamber 82 and the discharge path 70 is cut off.
- compressed air is supplied to the pilot chamber 82 from the valve chamber 68 via the vertical holes 78 and the horizontal holes 80. Because of this, the internal pressure of the pilot chamber 82 becomes larger than the internal pressure of the valve chamber 68, so that the valve body 74 of the diaphragm valve 16 is seated on the first valve seat 72. That is, the diaphragm valve 16 is closed, and the communication between the storage chamber 12 and the valve chamber 68 and the discharge path 70 is cut off.
- the holder 22 and the solenoid valve 20 may be arranged separately from the second holding member 64.
- a valve introducing pipe 160 and a valve leading pipe 162 may be interposed between the second pilot passage 84 and the valve inlet passage 90, and between the valve outlet passage 94 and the pilot outlet passage 86.
- the solenoid valve 20 can be arranged at a position separated from the work place where water splashes scatter, the solenoid valve 20 can be prevented from getting wet.
- the response speed can be further increased by reducing the stroke of the diaphragm valve 16.
- a configuration for realizing this will be described as a second embodiment.
- the same components as those shown in FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description thereof will be omitted. 6 to 8, illustration of the conductor 150, the power supply 152, the control circuit 154, and the control switch 156 is omitted.
- the compressed fluid discharge control device 200 has a flow control device 202 which is an example of a displacement amount control means. Note that the flow control device 202 has basically the same configuration as that described in Japanese Patent No. 6179510, and therefore will only be described briefly.
- the flow control device 202 includes a flow control unit 204, a displacement member 206, and a stopper 208 as a contact member.
- the displacement member 206 is passed through a screw hole 210 formed in the holder 22 and an insertion hole 212 formed in the second holding member 64, and its left end projects into the pilot chamber 82.
- the stopper 208 is attached to the left end.
- the flow rate adjusting unit 204 adjusts the amount of protrusion of the displacement member 206 in the pilot chamber 82, thereby also serving as an operation mechanism for regulating the displacement of the valve body 74, in other words, the opening of the diaphragm valve 16.
- the flow rate adjusting unit 204 includes a housing 214 that houses the operation mechanism, and a knob 216 that is rotatably attached to the housing 214.
- the housing 214 is detachable from the second holding member 64. It has become.
- the housing 214 has a first case 218 and a second case 220 that can be divided.
- the second case 220 therein is formed in a dome shape so as to have an internal space having a predetermined volume when attached to the first case 218.
- the end of the second case 220 facing the first case 218 is an opening having a relatively large inner diameter, and the right end of the first case 218 is inserted into this opening.
- On the side surface of the second case 220 a plurality of (for example, four) locking openings (not shown) are formed at equal intervals.
- a mounting hook 222 protruding from the side surface of the first case 218 is inserted into each locking opening.
- the first case 218 and the second case 220 are connected by inserting the mounting hook 222 into the locking opening.
- the knob 216 functions as an operation unit that adjusts the flow rate of the fluid in the compressed fluid discharge control device 200 by being rotated relative to the housing 214 by the operator. That is, the knob 216 is formed in a bottomed cylindrical shape having a bottom on the right side, and a tubular fitting portion 224 extending leftward is formed at the center of the bottom in the cylinder.
- the rotation transmitting member 226 is fitted to the fitting portion 224.
- the inner peripheral surface (female type) of the fitting portion 224 and the outer peripheral surface (male type) of the rotation transmitting member 226 are fitted so that the knob 216 can be displaced in the left-right direction. Therefore, the rotational force of the knob 216 is smoothly transmitted to the rotation transmitting member 226.
- the rotation transmitting member 226 is a member for operating the displacement of the displacement member 206 and the stopper 208, and is formed with a predetermined length.
- the rotation transmitting member 226 has a hollow cylindrical tubular portion 228 and a column portion 230 extending leftward from an end surface of the tubular portion 228.
- the hollow inside of the cylindrical portion 228 is formed as a space along which the shaft portion 232 of the displacement member 206 can advance and retreat along the axial direction.
- a female screw portion is engraved on the inner peripheral wall of the cylindrical portion 228, and a male screw portion engraved on the side peripheral wall of the shaft portion 232 of the displacement member 206 is provided in the female screw portion and the screw hole 210. It is screwed.
- the column portion 230 is formed in a cylindrical shape having an outer diameter smaller than the cylindrical portion 228, extends rightward through the inside of the housing 214, and has a right end connected to the knob 216. .
- the displacement member 206 is a solid circular rod member extending in the left-right direction.
- the displacement member 206 has a connection end 233 and the shaft 232.
- the stopper 208 is provided on the end face of the connection end 233 therein, and can contact the end face of the valve body 74.
- the shaft portion 232 is formed with a predetermined length along the axial direction, and the male screw portion is engraved on the side wall thereof as described above.
- the male screw portion is screwed to a female screw portion on the inner surface of the rotation transmitting member 226 extending toward the shaft portion 232. Therefore, when the rotation transmitting member 226 is rotated, the displacement member 206 including the shaft portion 232 can be moved forward and backward (displaced) along the left-right direction.
- the flow control unit 204 includes a display ring 234 provided in the housing 214 in addition to the housing 214, the knob 216, and the rotation transmitting member 226 described above.
- the display ring 234 is rotatably housed in the dome-shaped second case 220.
- a display window (not shown) is formed on a side surface of the second case 220, and the scale of the display ring 234 can be visually recognized from the display window.
- the second case 220 has a cylindrical protrusion 238 having a predetermined inner diameter.
- the protrusion 238 is inserted into the knob 216 and rotatably supports the knob 216.
- a knob rotation restricting portion 240 is provided at the left end on the outer peripheral surface of the protruding portion 238, and a first annular protrusion 242 and a second annular protrusion 244 are formed on the left side of the knob rotation restricting portion 240.
- the inner projection 245 at the right end of the knob 216 can be engaged with the first annular projection 242 and the second annular projection 244 in a stepwise manner.
- a plurality of protrusions are formed on the outer peripheral surface of the wall portion of the knob 216 surrounding the fitting portion 224 so as to be easily grasped by an operator.
- An abutment portion 246 is provided at the right end of the inner peripheral surface of the wall to be in contact with the knob rotation restricting portion 240, and an inner protrusion protruding radially inward is provided at the left end of the inner peripheral surface of the wall. 245 are provided.
- the knob 216 is switched between a rotatable state and a rotation-prevented state according to the left and right positions with respect to the protrusion 238. That is, when the knob 216 is at the left position and the inner protrusion 245 is hooked on the second annular protrusion 244 of the protrusion 238, the contact portion 246 of the knob 216 contacts the knob rotation restricting portion 240. Rotation is regulated. When rotating the knob 216, the knob 216 is displaced rightward so as to get over the second annular protrusion 244, whereby the contact between the contact portion 246 and the knob rotation restricting portion 240 is released. This allows the knob 216 to rotate with respect to the second case 220.
- the column 230 of the rotation transmitting member 226 is inserted into the hole 248.
- the display ring 234 is formed with an inscribed tooth portion (not shown), and a pair of meshing portions (not shown) is formed on the outer peripheral surface of the rotation transmitting member 226. The display ring 234 is rotated only when the meshing portion is engaged (engaged) with the inscribed tooth portion.
- the operator grips the knob 216 and displaces the knob 216 to the right.
- the inner protrusion 245 at the left end of the knob 216 is engaged with the first annular protrusion 242, and the meshing portion is engaged with the internal tooth portion.
- the rotation transmitting member 226 and the display ring 234 rotate.
- the displacement member 206 advances leftward or rightward in the hollow interior of the cylindrical portion 228 while rotating.
- the stopper 208 advances leftward or rightward in the pilot chamber 82.
- the position of the stopper 208 can be grasped by the scale of the display ring 234. That is, for example, when it is desired to increase the flow rate of the pressure fluid in the compressed fluid discharge control device 200 in accordance with the scale number, the displacement member 206 and the stopper 208 are set so as to move rightward as the scale number increases. do it.
- the operator stops rotating the knob 216. Further, the knob 216 is pushed to the left so that the inner protrusion 245 at the left end of the knob 216 is engaged with the first annular protrusion 242, and the engagement between the meshing portion and the inscribed tooth portion is released. . As a result, the knob 216 is locked and cannot be rotated, and the displacement member 206 and the stopper 208 cannot be displaced. Thus, the inner projection 245 and the first annular projection 242 function as locking means.
- the diaphragm valve 16 maintains the closed state. Therefore, communication between the storage chamber 12 and the discharge path 70 is interrupted.
- the operator When performing a cleaning operation or the like by air blowing, the operator operates the control switch 156 via the control circuit 154 as in the first embodiment. As a result, the control switch 156 is closed (turned on), a current is supplied from the power source 152 to the electromagnetic coil 112 via the conducting wire 150 and the energizing terminal, and the fixed core 116 is magnetized to exhibit an exciting action. Accordingly, as shown in FIG. 8, the movable core 118 is displaced so as to be drawn toward the fixed core 116, and the valve body 120 held at the left end of the movable core 118 is separated from the second valve seat 96. Accordingly, the return spring 146 is compressed.
- valve inlet passage 90 and the valve outlet passage 94 communicate with each other via the valve mounting port 92 (the valve chamber of the solenoid valve 20). Accordingly, the pilot chamber 82 communicates with the discharge passage 70 via the second pilot passage 84, the valve inlet passage 90, the valve mounting port 92, the valve outlet passage 94, and the pilot outlet passage 86. Therefore, the compressed air in the pilot chamber 82 flows through the discharge path 70 and is discharged from the discharge port. By closing the control switch 156 in this way, the pilot chamber 82 is opened and the compressed air in the pilot chamber 82 is discharged.
- the positions of the displacement member 206 and the stopper 208 are changed by rotating the knob 216.
- the protrusion amount of the stopper 208 into the pilot chamber 82 increases, the displacement amount of the valve main body 74 decreases and the opening degree of the diaphragm valve 16 decreases. Therefore, the flow rate of the compressed air, that is, the discharge amount is reduced.
- the amount of protrusion of the stopper 208 decreases, the amount of displacement of the valve body 74 and the degree of opening of the diaphragm valve 16 increase, and the flow rate of compressed air, that is, the discharge amount, increases.
- the opening of the diaphragm valve 16 and the discharge amount of the compressed air are determined by the contact position of the stopper 208 with the valve body 74. That is, the maximum flow rate and the peak pressure of the compressed air are regulated by the flow control device 202.
- the protrusion amount of the stopper 208 can be precisely changed by rotating the knob 216. Therefore, it is possible to slightly change the maximum flow rate of the compressed air derived from the discharge path 70. That is, the discharge amount and the peak pressure of the compressed air can be precisely regulated. Therefore, it is possible to prevent the compressed fluid discharge control device 200 from discharging more than a required amount.
- the response speed can be further increased by reducing the displacement amount of the diaphragm valve 16, in other words, the stroke.
- the present invention is not particularly limited to the above-described first to fourth embodiments, and various changes can be made without departing from the gist of the present invention.
- compressed nitrogen or the like may be used instead of compressed air, or a compressed fluid may be used as the other.
- the compressed fluid discharge control device 10 is not particularly limited to a stationary type, but may be a gun shape or another shape.
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Abstract
Description
前記圧縮流体を供給する供給路と、前記圧縮流体を吐出する吐出口が形成された吐出路とに連通するとともに、弁座が設けられた弁室が形成され、
前記弁座に対して着座又は離間することで、前記供給路と前記吐出路とを連通遮断又は連通するとともに、パイロット通路が形成されたダイヤフラム弁と、
前記供給路から前記パイロット通路を介して前記圧縮流体が導入されるパイロット室を開放又は閉止するパイロット室開閉弁と、
を有し、
前記パイロット室開閉弁は、通電に伴って開状態となり且つ通電停止に伴って閉状態となる電磁弁からなり、
前記パイロット室開閉弁が開状態となって前記パイロット室が開放されるとともに、前記ダイヤフラム弁が前記弁座から離間して前記供給路と前記吐出路が連通する圧縮流体吐出制御装置が提供される。
Claims (7)
- 圧縮流体を吐出制御する圧縮流体吐出制御装置(10)であって、
前記圧縮流体を供給する供給路(24、66)と、前記圧縮流体を吐出する吐出口が形成された吐出路(70)とに連通するとともに、弁座(72)が設けられた弁室(68)が形成され、
前記弁座(72)に対して着座又は離間することで、前記供給路(24、66)と前記吐出路(70)とを連通遮断又は連通するとともに、パイロット通路(78、80)が形成されたダイヤフラム弁(16)と、
前記供給路(24、66)から前記パイロット通路(78、80)を介して前記圧縮流体が導入されるパイロット室(82)を開放又は閉止するパイロット室開閉弁と、
を有し、
前記パイロット室開閉弁は、通電に伴って開状態となり且つ通電停止に伴って閉状態となる電磁弁(20)からなり、
前記パイロット室開閉弁が開状態となって前記パイロット室(82)が開放されるとともに、前記ダイヤフラム弁(16)が前記弁座(72)から離間して前記供給路(24、66)と前記吐出路(70)が連通する圧縮流体吐出制御装置(10)。 - 請求項1記載の圧縮流体吐出制御装置(10)において、前記供給路(24、66)と前記弁室(68)との間に前記圧縮流体を貯留する貯留室(12)が介在する圧縮流体吐出制御装置(10)。
- 請求項2記載の圧縮流体吐出制御装置(10)において、前記貯留室(12)が、容量を変更することが可能な容量可変式の内室である圧縮流体吐出制御装置(10)。
- 請求項2又は3記載の圧縮流体吐出制御装置(10)において、前記供給路(24、66)から前記貯留室(12)に導入される前記圧縮流体の流量を調整する流量調整弁(30)を有する圧縮流体吐出制御装置(10)。
- 請求項1~4のいずれか1項に記載の圧縮流体吐出制御装置(10)において、前記パイロット室開閉弁が、前記パイロット室(82)と前記吐出路(70)とを連通又は連通遮断する圧縮流体吐出制御装置(10)。
- 請求項1~5のいずれか1項に記載の圧縮流体吐出制御装置(10)において、前記ダイヤフラム弁(16)を構成する弁本体(74)に対して変位自在な当接部材(204)を有し、前記当接部材(204)が前記弁本体(74)に当接することで、前記弁本体(74)の変位を規制する変位量規制手段(202)が設けられている圧縮流体吐出制御装置(10)。
- 請求項1~6のいずれか1項に記載の圧縮流体吐出制御装置(10)において、前記パイロット室開閉弁の弁室が、配管(160、162)を介して前記パイロット室(82)及び前記吐出路(70)に連通する圧縮流体吐出制御装置(10)。
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BR112021004648-8A BR112021004648B1 (pt) | 2018-09-12 | 2018-09-12 | Dispositivo de controle de descarga de fluido comprimido |
MX2021002863A MX2021002863A (es) | 2018-09-12 | 2018-09-12 | Dispositivo de control de descarga de fluido comprimido. |
PCT/JP2018/033873 WO2020054000A1 (ja) | 2018-09-12 | 2018-09-12 | 圧縮流体吐出制御装置 |
KR1020217010755A KR102508110B1 (ko) | 2018-09-12 | 2018-09-12 | 압축유체 토출 제어장치 |
JP2020546608A JP7331330B2 (ja) | 2018-09-12 | 2018-09-12 | 圧縮流体吐出制御装置 |
US17/275,423 US11964290B2 (en) | 2018-09-12 | 2018-09-12 | Compressed-fluid discharge control device |
EP18933642.3A EP3851200A4 (en) | 2018-09-12 | 2018-09-12 | COMPRESSED FLUID DELIVERY CONTROL DEVICE |
CN201880097437.8A CN112689537B (zh) | 2018-09-12 | 2018-09-12 | 压缩流体喷出控制装置 |
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- 2018-09-12 WO PCT/JP2018/033873 patent/WO2020054000A1/ja unknown
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EP3851200A4 (en) | 2022-04-27 |
EP3851200A1 (en) | 2021-07-21 |
BR112021004648A2 (pt) | 2021-06-01 |
MX2021002863A (es) | 2021-05-28 |
KR20210056419A (ko) | 2021-05-18 |
KR102508110B1 (ko) | 2023-03-09 |
JP7331330B2 (ja) | 2023-08-23 |
US11964290B2 (en) | 2024-04-23 |
JPWO2020054000A1 (ja) | 2021-08-30 |
CN112689537B (zh) | 2023-05-26 |
CN112689537A (zh) | 2021-04-20 |
BR112021004648B1 (pt) | 2022-12-13 |
US20220048050A1 (en) | 2022-02-17 |
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