WO2019073834A1 - 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
- WO2019073834A1 WO2019073834A1 PCT/JP2018/036637 JP2018036637W WO2019073834A1 WO 2019073834 A1 WO2019073834 A1 WO 2019073834A1 JP 2018036637 W JP2018036637 W JP 2018036637W WO 2019073834 A1 WO2019073834 A1 WO 2019073834A1
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- WIPO (PCT)
- Prior art keywords
- valve
- compressed fluid
- control device
- chamber
- discharge control
- 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
- 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
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- 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
-
- 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
-
- 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
- B05B9/01—Spray pistols, discharge devices
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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
- 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
- F16K31/38—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
- F16K31/385—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a diaphragm
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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
- B05B1/3006—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
- B05B1/306—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
-
- 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
- B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
Definitions
- the present invention relates to a compressed fluid discharge control device that controls discharge of a compressed fluid.
- a compressed fluid mainly compressed air
- a compressed fluid discharge control device for performing such blowing there is a gun-shaped one as disclosed in, for example, JP 2005-246356 A and JP 2014-083518 A.
- 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” or the like, but is hereinafter referred to as an "air blow gun".
- the air blow gun includes a housing including a handle gripped by an operator, and a lever rotatably provided relative to the housing.
- the on-off valve interposed between the supply passage and the discharge passage formed in the handle is opened, and the supply passage and the discharge passage are communicated.
- the compressed air supplied from the compressed air supply source to the supply passage flows into the discharge passage, and is further discharged from the opening (discharge port) of the discharge passage.
- an electromagnetic valve is provided in a supply pipe connected to the handle to supply compressed air to the supply path, and the electromagnetic valve is also opened and closed at regular intervals.
- the turning speed of the lever differs according to the magnitude of the force with which the operator grips the lever. That is, the smaller the force for gripping the lever, the lower the rotation speed, and as a result, the discharge flow rate of compressed air immediately after the supply passage and the discharge passage communicate with each other, and hence the discharge pressure becomes smaller. In this case, it is not easy to obtain sufficient removal efficiency.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a compressed fluid discharge control device which is excellent in removal efficiency and in which complicated operations can be omitted.
- the present invention is a compressed fluid discharge control device for controlling the discharge of a compressed fluid, wherein A valve chamber provided with a valve seat is formed between a supply passage for supplying the compressed fluid and a discharge passage having a discharge port for discharging the compressed fluid.
- a diaphragm valve in which the supply passage and the discharge passage are connected or disconnected in communication or communication with each other by being seated or separated from the valve seat, and a pilot passage is formed;
- a pilot chamber on-off valve that opens or closes a pilot chamber into which the compressed fluid is introduced from the supply passage through the pilot passage;
- An operating member for opening and closing the pilot chamber on-off valve; Have By opening the pilot chamber on-off valve and opening the pilot chamber, the diaphragm valve is separated from the valve seat and the supply passage and the discharge passage communicate with each other, When the pilot chamber on-off valve is closed or the supply of the compressed fluid from the supply passage is stopped, the diaphragm valve is seated on the valve seat to close the pilot chamber, and the supply passage and the supply passage are closed. It is characterized in that the communication of the discharge passage is shut off.
- the diaphragm valve is opened as the pilot chamber is opened and the compressed fluid in the pilot chamber is discharged. Therefore, quick response speed can be obtained.
- the compressed fluid which has reached the valve chamber flows into the discharge passage at once, and is discharged from one open end (discharge port) of the discharge passage. Therefore, regardless of the magnitude of the operation speed of the opening / closing operation member, a high discharge pressure (peak pressure) can be instantaneously obtained immediately after the start of discharge.
- the response speed can be made faster 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.
- the discharge is started by the simple operation of the operator holding the lever. That is, no complicated operation is required to obtain the peak pressure.
- a reservoir for storing the compressed fluid is provided between the supply passage and the valve chamber.
- the compressed fluid stored in advance in the storage chamber flows into the discharge path at once as the diaphragm valve is opened. Therefore, a larger discharge pressure can be easily obtained.
- the removal efficiency of cutting powder, dust and the like is further improved.
- the storage chamber When the storage chamber is provided, the storage chamber may be configured as a variable-capacity inner chamber whose capacity can be changed. Thereby, the upper limit of the discharge pressure (peak pressure) of the compressed fluid can be set in accordance with the application.
- the storage chamber it is preferable to provide a flow control valve for adjusting the flow rate of the compressed fluid introduced from the supply passage into the storage chamber.
- a flow control valve for adjusting the flow rate of the compressed fluid introduced from the supply passage into the storage chamber.
- the flow rate of the compressed fluid introduced into the storage chamber can be set small. If the diaphragm valve continues to be opened after the discharge of the high discharge pressure is finished, the compressed fluid passes through the storage chamber, reaches the discharge passage, and is discharged at a low pressure. That is, low pressure blow can be continued.
- the dynamic friction of an object in motion is smaller than the static friction of a stationary object. Therefore, the cutting powder and dust can be maintained in the moving state even if the high discharging pressure is applied and the low discharging pressure is applied to the cutting powder and dust in the moving state. Therefore, such foreign matter can be removed continuously.
- valve part which changes the opening degree of a supply path
- the discharge pressure at the low discharge pressure after the discharge of the high discharge pressure is finished can be adjusted to a desired pressure.
- the compressed fluid discharge control device may have a housing in which a valve chamber, a pilot chamber and a discharge passage are formed, and a diaphragm valve and a pilot chamber on-off valve are provided.
- a gun shape is mentioned as an example of the shape of a housing.
- the pilot chamber on-off valve communicate or block the communication between the pilot chamber and the discharge passage.
- the pilot chamber on-off valve communicates or block the communication between the pilot chamber and the discharge passage.
- the compressed fluid in the pilot chamber flows into the discharge passage. 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 the discharge is further increased, and further energy saving can be achieved.
- a pressing member which presses the pilot chamber opening and closing valve in the opening direction when the opening and closing operation member is operated, and the pressing member in the closing direction of the pilot chamber opening and closing valve
- a resilient member for resiliently urging may be provided.
- a contact member which is displaceable with respect to the diaphragm valve is provided, and the displacement of the diaphragm valve is regulated by the contact member being in contact with the diaphragm valve. That is, it is preferable to provide displacement amount control means.
- the maximum opening degree of the diaphragm valve can be smaller than the designed maximum opening degree when the contact member is not in contact with the valve body.
- 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 discharge of the pressure fluid more than the necessary amount.
- the stop position of the valve body can be changed by changing the position of the contact member. That is, the maximum opening of the diaphragm valve can be arbitrarily changed.
- the position of the contact member By precisely adjusting the position of the contact member, it is possible to precisely control the maximum opening of the diaphragm valve and hence the flow rate and peak pressure of the pressure fluid derived from the diaphragm valve.
- the locking means for positioning and fixing the contact member. Since the contact member is positioned and fixed, the maximum opening degree of the diaphragm valve becomes constant, and the flow rate of the pressure fluid at this time becomes stable. Also, the locking means make it impossible for the operator to easily adjust the opening degree. For this reason, it is possible to prevent discharge or the like more than the necessary amount set in advance by the administrator.
- the diaphragm valve provided between the supply passage and the discharge passage 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. Therefore, regardless of the magnitude of the operation speed of the opening / closing operation member, it is instantaneously increased immediately after the start of discharge. Discharge pressure (peak pressure) is obtained. Therefore, since it is not necessary to discharge a large amount of compressed fluid to obtain a high discharge pressure, it is possible to reduce the amount of compressed fluid used and to save energy.
- the diaphragm valve is quickly opened with the opening of the pilot chamber, a large flow of compressed fluid flows instantaneously. For this reason, it is possible to easily obtain the peak pressure immediately after that by the simple operation of operating the opening / closing operation member. Moreover, the response speed is excellent. The response speed can be made faster by reducing the stroke of the diaphragm valve.
- FIG. 1 is a schematic side sectional view of an essential part of an air blow gun (compressed fluid discharge control device) according to a first embodiment of the present invention.
- FIG. 2 is an enlarged side sectional view of an essential part of the air blow gun of FIG.
- FIG. 3 is an enlarged side sectional view of an essential part showing a state in which the diaphragm valve constituting the air blow gun of FIG. 1 is opened and the supply passage and the storage chamber communicate with the discharge passage.
- FIG. 4 is a graph showing the temporal change of the discharge pressure.
- FIG. 5 is an enlarged side sectional view of an essential part of an air blow gun (compressed fluid discharge control device) according to a second embodiment of the present invention.
- FIG. 6 is an enlarged side sectional view of an essential part showing a state in which a spool constituting the air blow gun of FIG. 5 is displaced.
- FIG. 7 is an enlarged fragmentary side cross-sectional view showing a state in which the spool is displaced to a position different from that in FIG.
- FIG. 8 is an enlarged side sectional view of an essential part of an air blow gun (compressed fluid discharge control device) according to a third embodiment of the present invention.
- FIG. 9 is a schematic perspective view of a flow control device provided in the air blow gun of FIG.
- FIG. 10 is an enlarged side sectional view of an essential part showing a state in which the diaphragm valve constituting the air blow gun of FIG. 8 is opened, and the supply passage and the storage chamber communicate with the discharge passage.
- FIG. 11 is an enlarged side sectional view of an essential part of an air blow gun (compressed fluid discharge control device) according to a fourth embodiment of the present invention.
- FIG. 1 is a schematic side sectional view of an essential part of an air blow gun 10 which is a compressed fluid discharge control device according to a first embodiment.
- the air blow gun 10 has a gun-shaped housing 12 and a lever 14 (operating member for opening and closing) rotatably attached to the housing 12.
- the housing 12 is configured to include a handle 16 held by a worker, a valve portion 18 and a discharge portion 20.
- a first supply passage 22 is formed for introducing compressed air supplied from a compressed air supply source and flowing through a supply tube (not shown).
- a threaded portion 24 for connecting the supply tube is engraved.
- a flow rate adjustment valve 26 is disposed in the first supply passage 22 to adjust the flow rate of the compressed air flowing through the first supply passage 22.
- the handle 16 is a hollow portion, and in the hollow interior, a storage chamber 32 which is wider and has a larger capacity than the first supply passage 22 and the second supply passage 30 is formed.
- the storage chamber 32 intervenes between the first supply passage 22 and the second supply passage 30. That is, the compressed air that has flowed through the first supply passage 22 is temporarily stored in the storage chamber 32, and then supplied to the valve unit 18 through the second supply passage 30 extending from the handle 16 to the valve unit 18.
- the storage chamber 32 is provided as a variable-capacity internal chamber whose capacity can be changed. The same applies to the second to fourth embodiments described later.
- the valve portion 18 has a first holder member 38 in which a part of the second supply passage 30, the circulating valve chamber 34, and a part of the discharge passage 36 are formed. That is, the valve chamber 34 intervenes between the second supply passage 30 and the discharge passage 36 and communicates with both the passages 30 and 36. Further, at the valve chamber 34 side opening of the discharge passage 36, a valve seat 39 projecting in an annular shape is provided.
- the valve portion 18 further includes a second holder member 42 which holds the diaphragm valve 40 together with the first holder member 38. That is, the diaphragm valve 40 has a thick valve body 44 and a flange 46 which is thinner and larger in diameter than the valve body 44. The diaphragm valve 40 is held by the first holder member 38 and the second holder member 42 by the outer peripheral edge portion of the flange portion 46 being sandwiched between the first holder member 38 and the second holder member 42.
- the valve chamber 34 and the pilot chamber 52 communicate with each other by the vertical holes 48 and the horizontal holes 50. That is, the vertical holes 48 and the horizontal holes 50 constitute a first pilot passage for introducing the compressed air into the pilot chamber 52.
- a recess 53 is formed on the end face of the second holder member 42 on the side facing the diaphragm valve 40.
- a pilot chamber 52 is formed by the recess 53 and the end face of the diaphragm valve 40 on the side facing the second holder member 42.
- a second pilot passage 58 extending to the vicinity of the bottom of a valve housing hole 54 (small hole 56) described later is connected.
- a long discharge path 36 is formed.
- One end of the discharge path 36 is a discharge port opened to the atmosphere.
- a predetermined member such as a nozzle or a diffuser (neither shown) may be attached to the discharge port.
- the lever 14 is attached to two thin attachment tabs 60 which are formed so as to project downward from the discharge part 20 via a turning screw. That is, while a penetration hole is formed in two attachment tab parts 60, the screw for rotation passes through this penetration hole.
- a nut that serves as a stopper for the rotation screw is screwed into the screw portion of the rotation screw that protrudes from the insertion hole.
- the screw for rotation, the penetration hole, the screw part, and the nut are not illustrated.
- the lever 14 is a hollow body, in which a V-shaped spring 70 is disposed, one end of which is in contact with the inner wall of the lever 14 and the other end of which is in contact with the outer wall of the handle 16.
- the V-shaped spring 70 is held by the turning screw by the body portion of the turning screw being passed through the spiral turning portion 71.
- a pressing projection 72 is formed to protrude.
- the pressing projection 72 faces the lower opening of the piston sliding hole 74 formed in the discharge portion 20, which has a large inner diameter.
- the valve housing hole 54 is continuous with the upper opening of the piston sliding hole 74 having a small inner diameter.
- the piston sliding hole 74 is located on the back side of the drawing in FIG. 1 with respect to the discharge passage 36.
- a communication passage 76 extending in a direction perpendicular to the paper surface of FIG. 1 is formed from the discharge passage 36 to the piston sliding hole 74.
- a pressing rod 78 (pressing member) is displaceably accommodated inside the large diameter lower portion of the piston sliding hole 74.
- a seal member 82 is attached to the large diameter piston portion 80 of the pressing rod 78 facing the lower opening of the piston sliding hole 74, whereby the piston sliding hole 74 is sealed.
- the rod portion 84 of the pressing rod 78 is accommodated separately from the inner wall of the piston sliding hole 74. Furthermore, the end of the rod portion 84 abuts on the engagement hole 96 provided in the small diameter thick portion 94 of the poppet valve 92 (pilot chamber on-off valve), and is wider than the upper opening of the piston sliding hole 74 Closure seal 98 is engaged.
- the poppet valve 92 has the small diameter thick portion 94 and a large annular projection 99.
- the valve housing hole 54 is formed as a stepped hole including a small hole 56 having a small inner diameter and a large hole 100 having a large inner diameter, and substantially the entire poppet valve 92 is housed in the small hole 56 therein. ing. As described above, in the vicinity of the bottom of the small hole 56, the second pilot passage 58 starting from the recess 53 is connected.
- a cap member 104 covering the upper side of the annular projection 99 is positioned and fixed. The cap member 104 prevents the poppet valve 92 from coming out of the valve accommodation hole 54.
- a coil spring 106 as a resilient member is accommodated inside the annular projection 99.
- the lower end of the coil spring 106 abuts on the bottom surface of the annular projection 99, and the upper end abuts on the lower end surface of the cap member 104. Therefore, the coil spring 106 biases the poppet valve 92 to the lever 14 and urges it. Due to this resilient biasing, the closing seal 98 is seated near the upper opening of the piston sliding hole 74. That is, the upper opening of the piston sliding hole 74 is closed by the closing seal 98.
- the air blow gun 10 according to the first embodiment is basically configured as described above, and the operation and effect thereof will be described next.
- Compressed air is supplied from the compressed air supply source to the first supply passage 22 through the supply tube, and introduced from the first supply passage 22 into the storage chamber 32.
- the compressed air passes through the second supply passage 30, the valve chamber 34, the vertical hole 48 and the horizontal hole 50 (first pilot passage) formed in the diaphragm valve 40, and then the pilot chamber. It distributes to 52.
- the compressed air is further introduced into the valve receiving hole 54 (small hole 56) via the second pilot passage 58. Since the valve receiving hole 54 is closed by the cap member 104 and the closing seal 98 closes the upper opening of the piston sliding hole 74, the further flow of compressed air is blocked.
- the diaphragm valve 40 maintains the state in which the valve body 44 is seated on the valve seat 39. That is, the diaphragm valve 40 is closed, and the communication between the first supply passage 22, the storage chamber 32, the second supply passage 30, and the discharge passage 36 is cut off.
- the operator When performing cleaning work by air blow, the operator holds the handle 16 and the handle 14 and the lever 14 so as to cover the lever 14 with the finger, and then the lower end of the lever 14 approaches the handle 16 Then, the lever 14 is pivoted about the pivoting screw. At this time, the V-shaped spring 70 is compressed, and the pressing projection 72 formed on the upper end surface of the lever 14 presses the lower side of the piston 80 of the pressing rod 78.
- the pressing rod 78 pressed by the piston 80 ascends in the piston sliding hole 74 while the piston 80 is in sliding contact with the piston sliding hole 74, as shown in FIG. As a result, the rod portion 84 ascends, and the poppet valve 92 ascends integrally therewith. Since the annular projection 99 of the poppet valve 92 is covered by the cap member 104, the poppet valve 92 is prevented from being separated from the small hole 56, and the coil spring 106 is contracted.
- the closing seal 98 separates from the piston sliding hole 74. That is, the piston sliding hole 74 opens. Therefore, the second pilot passage 58 communicates with the piston slide hole 74 through the small hole 56.
- the piston sliding hole 74 and the discharge passage 36 are in communication via the communication passage 76. Therefore, the second pilot passage 58 communicates with the discharge passage 36 via the small hole 56, the piston sliding hole 74, and the communication passage 76 as the rod portion 84 ascends. Therefore, the compressed air in the second pilot passage 58 and the pilot chamber 52 flows to the discharge passage 36 and is discharged from the discharge port. Thus, the pilot chamber 52 is opened by the poppet valve 92 being opened.
- the valve body 44 of the diaphragm valve 40 is pressed by the compressed air in the valve chamber 34, and as a result, the valve body 44 quickly separates from the valve seat 39. That is, the diaphragm valve 40 opens quickly. As described above, the diaphragm valve 40 is opened as the compressed air in the pilot chamber 52 is discharged, so that a quick response speed can be obtained. Further, by reducing the stroke of the diaphragm valve 40 at this time, the response speed can be made faster.
- At least the storage chamber 32 and the second supply passage 30 communicate with the discharge passage 36 as the diaphragm valve 40 opens.
- the first supply passage 22 also communicates with the discharge passage 36.
- the storage chamber 32 is previously filled with a predetermined volume of compressed air. In other words, a predetermined amount of compressed air is already stored in the storage chamber 32. Therefore, the compressed air in the storage chamber 32 is introduced into the discharge passage 36 via the second supply passage 30 and the valve chamber 34, and compressed from the pilot chamber 52 into the discharge passage 36 as described above. Join the air. Therefore, a large flow of compressed air is discharged at once from the discharge port. For this reason, as shown by a solid line in FIG. 4, a high discharge pressure (peak pressure) can be instantaneously obtained immediately after the start of discharge (blowing).
- peak pressure peak pressure
- the discharge pressure in the air blow gun according to the prior art is indicated by a broken line. It can be understood from FIG. 4 that the discharge pressure is substantially constant from the start to the end of the discharge in the prior art, 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 40 is opened by opening the pilot chamber 52, and the compressed air stored in the storage chamber 32 is discharged at once. Therefore, the peak pressure can be easily obtained by the simple operation of rotating the lever 14 regardless of the magnitude of the force of gripping the lever 14 by the worker, in other words, the rotation speed of the lever 14.
- the flow rate adjustment valve 26 When the flow rate adjustment valve 26 is fully closed, the communication between the first supply passage 22 and the storage chamber 32 is shut off, so even if the lever 14 is maintained at the handle 16 side, the storage is maintained. The blow ends in response to the completion of the discharge of the compressed air in the chamber 32. When blowing again, the flow control valve 26 may be opened to refill the storage chamber 32 with compressed air.
- the flow rate adjustment valve 26 when the flow rate adjustment valve 26 is opened at the predetermined opening degree, the first supply passage 22 and the storage chamber 32 communicate with each other, so the compressed air in the storage chamber 32 is discharged simultaneously with the first Compressed air is supplied via the supply passage 22. At this time, since the diaphragm valve 40 is open, the compressed air flows in the storage chamber 32 without being stored in the storage chamber 32, and flows through the second supply passage 30 and the valve chamber 34 to the discharge passage 36. Do. Therefore, discharge of compressed air is continued.
- the pressure (discharge pressure) of the compressed air discharged from the discharge port at this time 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 in accordance with the opening degree of the flow rate adjustment valve 26. That is, the discharge pressure increases as the opening degree of the flow rate adjustment valve 26 increases.
- the compressed air stored in the storage chamber 32 is discharged first to increase the discharge pressure immediately after the discharge (to obtain the peak pressure), and thereafter to decrease the discharge pressure.
- the static friction acting on a stationary object is smaller than the kinetic friction acting on a moving object. Therefore, even when the discharge pressure is changed as described above, the cutting powder, dust, etc. are made to move from the stationary state by the peak pressure immediately after the discharge, and the movement of the cutting powder, dust, etc. is made by the low discharge pressure thereafter. It is possible to maintain the state. For this reason, cutting powder, dust, etc. can be removed easily.
- the compressed air in the pilot chamber 52 and the second pilot passage 58 is used for blowing. Therefore, the peak pressure immediately after the discharge can be further increased, and the consumption of compressed air can be reduced to achieve further energy saving.
- the operator may reduce the grip on the lever 14.
- the lever 14 pivots about the pivoting screw under the resilient action of the V-shaped spring 70 and returns to the original position. (See Figure 1).
- the piston 80 is released from the pressing of the pressing projection 72 of the lever 14, and the coil spring 106 resiliently biases the poppet valve 92.
- the poppet valve 92 and the pressing rod 78 are lowered, and the closing seal 98 closes the upper opening of the piston sliding hole 74 (see FIGS. 1 and 2).
- the communication between the pilot chamber 52 and the discharge passage 36 is shut off. Because of this, the internal pressure of the pilot chamber 52 becomes larger than the internal pressure of the valve chamber 34, so the valve body 44 of the diaphragm valve 40 is seated on the valve seat 39. That is, the diaphragm valve 40 is closed, and the communication between the first supply passage 22, the storage chamber 32 and the second supply passage 30, and the discharge passage 36 is cut off.
- FIG. 5 An air blow gun 150 according to a second embodiment shown in FIG. 5 will be described.
- the same components as those shown in FIGS. 1 to 3 are denoted by the same reference numerals, and the detailed description thereof will be omitted.
- a valve slide hole 152 extending in a direction substantially orthogonal to the first supply passage 22 is formed in the lower portion of the handle 16, and the spool 154 is formed in the piston slide hole 74.
- the (flow rate change valve) is accommodated displaceably.
- the spool 154 has a shaft portion 156, and a first land portion 160, a second land portion 162, and a third land portion 164 (all of which are valve portions) having a diameter larger than that of the shaft portion 156.
- the first land portion 160 is closest to the lever 14, and the third land portion 164 is the farthest from the lever 14.
- the first O-ring 166 and the second O-ring 168 are attached to the side peripheral walls of the first land portion 160 and the third land portion 164 among them. When the first O-ring 166 and the second O-ring 168 contact the inner peripheral wall of the valve sliding hole 152, the valve sliding hole 152 is sealed. In addition, a first spring receiving hole 170 is formed in the third land portion 164.
- valve sliding hole 152 One end of the valve sliding hole 152 is open, and a rod-shaped pressing portion 174 which is formed in a lower portion of the lever 14 and has a substantially cylindrical shape is inserted into the opening.
- the pressing portion 174 abuts on one end surface of the first land portion 160.
- the spring receiving member 178 is positioned and fixed to one end of the valve sliding hole 152 separated from the lever 14 via a screw portion 176 formed on the side peripheral wall.
- a second spring storage hole 180 is formed on the end face of the spring receiving member 178 facing the third land portion 164.
- a return spring 182 resiliently urging the spool 154 toward the lever 14 is accommodated in the second spring accommodation hole 180 and the first spring accommodation hole 170.
- the second land portion 162 is located at the intersection of the first supply passage 22 and the valve sliding hole 152.
- the volume of the portion of the second land portion 162 approaching the crossing portion in other words, the amount of obstruction of the second land portion 162 with respect to the crossing portion is minimum. That is, the degree of opening of the intersection portion is maximum, and the compressed air supplied from the supply tube to the first supply passage 22 is stored in the storage chamber 32 (see FIG. 1) as in the first embodiment.
- the operator pulls the lever 14 toward the handle 16 as described above.
- the first supply passage 22, the storage chamber 32, the second supply passage 30, and the discharge passage 36 communicate with each other through the valve chamber 34, and the compression stored in the storage chamber 32 Air is first discharged.
- the pressing portion 174 formed to project from the lever 14 enters the inside of the valve sliding hole 152 and presses the first land portion 160. Therefore, as shown in FIG. 6, while the first land portion 160 is displaced in the direction in which the valve sliding hole 152 is separated from the lever 14, the shaft portion 156, the second land portion 162 and the first land portion 162 are integrally formed. The three lands 164 are displaced in the direction away from the lever 14. At the same time, the return spring 182 is compressed.
- the second land portion 162 By displacing the second land portion 162 in this manner, the amount of blockage of the intersection by the second land portion 162 is increased. As a result, the intersection is narrowed, so the amount of compressed air flowing from the first supply passage 22 toward the discharge passage 36 is reduced. Therefore, after the instantaneous high discharge pressure (peak pressure) is obtained as described above, the low discharge pressure can be continuously obtained.
- FIG. 6 shows the time when the amount of rotation of the lever 14 (the amount of depression of the spool 154 by the pushing portion 174) is maximum, but the operator adjusts the gripping force to change the displacement position of the spool 154. can do. For example, when the amount of blockage of the second land portion 162 with respect to the intersection increases, the first supply passage 22 is further narrowed. As a result, the amount of compressed air flowing from the first supply passage 22 to the discharge passage 36 is further reduced, and the discharge pressure is further reduced.
- the operator appropriately adjusts the amount of rotation of the lever 14 to adjust the displacement position of the spool 154 to obtain the discharge pressure when the blow pressure is continued after the peak pressure is obtained. Can be changed freely. In some cases, it is also possible to choose to have the discharge pressure be zero (do not continue blowing).
- the operator may further reduce the grip on the lever 14.
- the resilient biasing force of the V-shaped spring 70 exceeds the gripping force, and the lever 14 pivots about the pivoting screw under the resilient action of the V-shaped spring 70. Then return to the original position.
- the push-in portion 174 retracts from the valve slide hole 152, the spool 154 is released from the pressure by the lever 14 (push-in portion 174). Accordingly, the return spring 182 extends and the spool 154 returns to its original position (see FIG. 5).
- the amount of blockage of the second land portion 162 with respect to the intersection is minimized. That is, the degree of opening of the intersection becomes maximum. Therefore, the compressed air can be efficiently stored in the storage chamber 32 because the storage chamber 32 is filled with the compressed air having a large flow rate.
- the air blow gun 200 according to the third embodiment shown in FIG. 8 has a flow control device 201 which is an example of the displacement amount control means.
- the flow control device 201 is basically the same as the configuration described in Japanese Patent No. 6179510, and therefore the outline thereof will be described below.
- the flow rate control device 201 mainly includes a flow rate adjustment display unit 202, a displacement member 203, and a contact member 204.
- the displacement member 203 is inserted into an insertion hole 205 formed through the second holder member 42, and the left end tip portion thereof protrudes into the pilot chamber 52.
- the contact member 204 is attached to the left end tip.
- the flow rate adjustment display unit 202 also serves as an operation mechanism for adjusting the amount of projection of the displacement member 203 in the pilot chamber 52 and thereby regulating the displacement of the valve main body 44, in other words, the opening degree of the diaphragm valve 40.
- the flow rate adjustment display unit 202 has a housing 206 accommodating the operation mechanism, and a knob 208 rotatably attached to the housing 206, and the housing 206 is attached to and detached from the second holder member 42. It is free.
- the housing 206 has a divisible first case 210 and a second case 212.
- the second case 212 is formed in a dome shape so as to have an internal space having a predetermined volume in a mounted state with the first case 210.
- the end of the second case 212 facing the first case 210 is an opening having a relatively large inner diameter, and the left end of the first case 210 is inserted into this opening.
- a plurality of (for example, four) locking openings 214 are formed at equal intervals (see FIG. 9).
- a mounting hook 216 formed to project from the side surface of the first case 210 is inserted into the locking port 214.
- the first case 210 and the second case 212 are connected by the insertion of the mounting hook 216 into the locking port 214.
- a display window 220 is formed on the side surface of the second case 212.
- the knob 208 functions as an operation unit that adjusts the flow rate of the fluid in the air blow gun 200 by being rotated relative to the housing 206 by the operator.
- the display window 220 displays the change in flow rate of fluid (ie, the amount of rotation of the knob 208) as a numerical value.
- the knob 208 is formed in a bottomed cylindrical shape in which the right side is the bottom, and a cylindrical fitting portion 222 extending toward the left is formed at the center of the bottom in the cylinder. ing.
- the rotation transmission member 224 is fitted to the fitting portion 222.
- the inner peripheral surface (female type) of the fitting portion 222 and the outer peripheral surface (male type) of the rotation transmission member 224 are structured such that the knob 208 can be displaced in the left-right direction and fitted at a position displaced to the left It has become. In the fitted state, the rotational force of the knob 208 is smoothly transmitted to the rotation transmission member 224.
- the rotation transmission member 224 is a member for operating the displacement of the displacement member 203 and the contact member 204, and is formed to have a predetermined length.
- the rotation transmitting member 224 has a hollow cylindrical cylindrical portion 226 and a pillar portion 228 extending rightward from the end face of the cylindrical portion 226.
- the hollow interior of the cylindrical portion 226 is formed as a space portion 231 in which the shaft portion 230 of the displacement member 203 can advance and retract along the axial direction.
- a female screw portion is engraved on the inner peripheral wall of the space portion 231, and a male screw portion engraved on the side peripheral wall of the shaft portion 230 of the displacement member 203 is screwed into this female screw portion.
- the pillar portion 228 is formed in a cylindrical shape whose outer diameter is smaller than that of the cylindrical portion 226, extends rightward through the inside of the housing 206, and its right end portion is connected to the knob 208 .
- the displacement member 203 is a solid circular rod member extending along the left-right direction.
- the displacement member 203 has a connecting end 232 and the shaft 230.
- the abutment member 204 is provided on the end face of the connection end 232 therein, and can abut on the end face of the valve body 44.
- the shaft portion 230 is formed to have a predetermined length along the axial direction, and a male screw portion is engraved on the side wall as described above.
- the male screw portion is screwed into the female screw portion of the inner surface of the rotation transmission member 224 (displacement operating portion) extending toward the shaft portion 230. Therefore, when the rotation transmission member 224 is rotated, the displacement member 203 including the shaft portion 230 can be advanced and retracted (displaced) in the left-right direction.
- the flow rate adjustment display unit 202 includes an indicator ring 234 provided in the housing 206 in addition to the housing 206, the knob 208, and the rotation transmission member 224 described above.
- the display ring 234 is rotatably housed in the dome-shaped second case 212.
- the display window 220 described above is formed on the side surface of the second case 212, and the scale 236 of the display ring 234 is visible from the display window 220.
- the second case 212 has a cylindrical projecting portion 238 having a predetermined inner diameter.
- the projecting portion 238 is inserted into the knob 208 and rotatably supports the knob 208.
- a knob rotation restricting portion 240 is provided on the outer peripheral surface of the projecting portion 238 at the right end, 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 protrusion 208 a at the left end of the knob 208 can be engaged stepwise with the first and second annular protrusions 242 and 244.
- a plurality of protrusions 208 b are formed on the outer peripheral surface of the wall portion of the knob 208 surrounding the fitting portion 222 so as to be easily grasped by the operator. Further, an abutting portion 246 which is in contact with the knob rotation restricting portion 240 is provided at the right end portion of the inner peripheral surface of the wall portion, and an inner projection projecting radially inward is provided at the left end portion of the inner peripheral surface of the wall portion. 208a is provided.
- the knob 208 is switched between the rotatable state and the non-rotational state depending on the left and right position with respect to the protrusion 238. That is, when the knob 208 is at the left position and the inner protrusion 208a is hooked on the second annular protrusion 244 of the protrusion 238, the contact portion 246 of the knob 208 contacts the knob rotation restricting portion 240. Rotation is regulated. When the knob 208 is rotated, the contact between the contact portion 246 and the knob rotation restricting portion 240 is released by pulling the knob 208 rightward so as to get over the second annular projection 244. Thereby, the knob 208 can rotate with respect to the second case 212.
- the display ring 234 is formed in an annular shape having a hole 248 through which the rotation transmission member 224 is inserted.
- the display ring 234 is disposed with the center of rotation biased relative to the insertion position of the rotation transmission member 224 by the spacer 250.
- the display ring 234 is formed in a tapered surface in which the outer peripheral surface side is inclined, and on the tapered surface, a scale 236 for displaying a change in flow rate of fluid is printed.
- the scale 236 faces the display window 220. For this reason, it is clearly recognized by the worker.
- the rotation transmission member 224 is inserted into the hole 248.
- An inner toothing portion (not shown) is formed on the display ring 234, and a pair of meshing portions (not shown) is formed on the outer peripheral surface of the rotation transmission member 224.
- the indicator ring 234 is rotated only when the meshing portion engages (engages) the internal toothing portion.
- the operator when flow control is required for the pressure fluid flowing therethrough, the operator holds the knob 208 and pulls it to the right.
- the inner protrusion 208a at the lower end portion of the knob 208 engages with the first annular protrusion 242, and the meshing portion engages with the internal toothing portion.
- the rotation transfer member 224 and the display ring 234 rotate.
- the space member 231 of the cylindrical portion 226 advances leftward or rightward while the displacement member 203 rotates.
- the abutment member 204 advances leftward or rightward in the pilot chamber 52.
- the position of the contact member 204 can be grasped by the scale 236 of the display ring 234. That is, for example, when it is desired to increase the flow rate of the pressure fluid in the air blow gun 200 corresponding to the number of the scale 236, the displacement member 203 and the abutment member 204 move to the right as the number of the scale 236 increases. It should be set.
- the operator stops the rotation of the knob 208. Further, the knob 208 is pushed so that the inner projection 208a at the lower end of the knob 208 engages with the first annular projection 242, and the engagement between the meshing portion and the internal toothing portion is released. As a result, the knob 208 is locked and can not be rotated, and the displacement member 203 and the contact member 204 can not be displaced. Thus, the inner protrusion 208a and the first annular protrusion 242 function as locking means.
- the internal pressure of the compressed air in the valve chamber 34 and the compressed air in the pilot chamber 52 only when the compressed air is introduced into the pilot chamber 52 and the valve accommodation hole 54 (small hole 56).
- the diaphragm valve 40 remains closed since the internal pressure due to the Accordingly, the communication between the first supply passage 22, the storage chamber 32, the second supply passage 30, and the discharge passage 36 is interrupted.
- the pressing projection 72 formed on the upper end surface of the lever 14 presses the lower side of the piston 80 of the pressing rod 78.
- the piston portion 80 of the pressing rod 78 ascends in the piston sliding hole 74, and the poppet valve 92 integrally ascends. This rise separates the closing seal 98 from the piston sliding hole 74, and as a result, the second pilot passage 58 communicates with the discharge passage 36 through the small hole 56, the piston sliding hole 74 and the communication passage 76.
- the compressed air in the second pilot passage 58 and the pilot chamber 52 flows to the discharge passage 36 and is discharged from the discharge port.
- the pilot chamber 52 is opened by the poppet valve 92 being opened. Therefore, the internal pressure in the pilot chamber 52 becomes smaller than the internal pressure in the valve chamber 34.
- valve main body 44 of the diaphragm valve 40 is pressed by the compressed air in the valve chamber 34 and quickly separates from the valve seat 39. That is, the diaphragm valve 40 opens quickly.
- the displacement of the valve main body 44 in the direction away from the valve seat 39 is stopped by the end face of the valve main body 44 abutting on the abutting member 204 as shown in FIG. That is, the abutment member 204 prevents further displacement of the valve body 44. Therefore, the separation distance between the valve body 44 and the valve seat 39, in other words, the opening degree of the diaphragm valve 40 is determined.
- the compressed air circulated from the storage chamber 32 and the compressed air fed from the pilot chamber 52 are derived from the discharge passage 36 at a flow rate corresponding to the opening degree.
- the positions of the displacement member 203 and the abutment member 204 can be changed by rotating the knob 208.
- the amount of protrusion of the contact member 204 into the pilot chamber 52 is larger, the amount of displacement of the valve main body 44 is smaller and the opening degree of the diaphragm valve 40 is smaller. Therefore, the flow rate of compressed air, that is, the discharge amount is reduced.
- the amount of protrusion of the contact member 204 decreases, the amount of displacement of the valve main body 44 and the degree of opening of the diaphragm valve 40 increase, and the flow rate of compressed air, that is, the discharge amount increases.
- the contact position of the contact member 204 with respect to the valve main body 44 determines the opening degree of the diaphragm valve 40 and the discharge amount of the compressed air. That is, the flow control device 201 regulates the maximum flow rate and peak pressure of the compressed air.
- the protrusion amount of the contact member 204 can be finely changed by rotating the knob 208. Therefore, it is possible to slightly change the maximum flow rate of the compressed air derived from the discharge passage 36. That is, the discharge amount and peak pressure of compressed air can be regulated precisely. Therefore, the air blow gun 200 can be prevented from discharging more than the necessary amount. Further, by reducing the displacement of the diaphragm valve 40, in other words, reducing the stroke, the response speed can be made faster.
- the upper limit of the peak pressure is set according to the application to avoid that the compressed air is discharged at a higher pressure than necessary. Can.
- the operator reduces the gripping force on the lever 14 so that the closing seal 98 closes the upper opening of the piston sliding hole 74 and the blow is completed.
- the air blow gun 260 has a screw 262 as a displacement member that constitutes a displacement amount control means (flow rate control unit).
- a nut 264 is screwed into the male screw portion of the screw 262, and a contact member 204 is provided at the right end.
- a screw hole 266 is formed in the second holder member 42, and an external thread of the screw 262 is inserted into the screw hole 266 and screwed. Then, the nut 264 is fastened to the screw 262 which has reached the predetermined depth of the screw hole 266. By this fastening, the screw 262 is positioned and fixed. That is, in this case, the nut 264 functions as a locking means that prevents the screw 262 from being displaced.
- the amount of displacement of the valve main body 44 until it abuts on the abutting member 204, and in turn the degree of opening of the diaphragm valve 40 is determined by the amount of projection of the screw 262 into the pilot chamber 52. That is, the discharge amount and peak pressure of the compressed air discharged through the discharge passage 36 are defined.
- compressed nitrogen or the like may be used instead of compressed air, or other compressed fluid may be used.
- the compressed fluid discharge control device is not limited to the gun-shaped type such as the air blow guns 10, 150, 200, 260, etc., and may be another type.
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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の間に介在し、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、
前記パイロット室開閉弁を開閉するための開閉用操作部材と、
を有し、
前記パイロット室開閉弁が開いて前記パイロット室が開放されることにより、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一方、
前記パイロット室開閉弁が閉じたとき、又は前記供給路からの前記圧縮流体の供給が停止されたときに前記ダイヤフラム弁が前記弁座に着座して前記パイロット室が閉止し、前記供給路と前記吐出路の連通が遮断されることを特徴とする。
Claims (10)
- 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(22、30)と、前記圧縮流体を吐出する吐出口が形成された吐出路(36)との間に介在し、弁座(39)が設けられた弁室(34)が形成され、
前記弁座(39)に対して着座又は離間することで、前記供給路(22、30)と前記吐出路(36)とを連通遮断又は連通するとともに、パイロット通路(48、50)が形成されたダイヤフラム弁(40)と、
前記供給路(22、30)から前記パイロット通路(48、50)を介して前記圧縮流体が導入されるパイロット室(52)を開放又は閉止するパイロット室開閉弁(92)と、
前記パイロット室開閉弁(92)を開閉するための開閉用操作部材(14)と、
を有し、
前記パイロット室開閉弁(92)が開いて前記パイロット室(52)が開放されることにより、前記ダイヤフラム弁(40)が前記弁座(39)から離間して前記供給路(22、30)と前記吐出路(36)が連通する一方、
前記パイロット室開閉弁(92)が閉じたとき、又は前記供給路(22、30)からの前記圧縮流体の供給が停止されたときに前記ダイヤフラム弁(40)が前記弁座(39)に着座して前記パイロット室(52)が閉止し、前記供給路(22、30)と前記吐出路(36)の連通が遮断されることを特徴と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(22、30)と前記弁室(34)との間に前記圧縮流体を貯留する貯留室(32)が介在することを特徴と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(32)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ことを特徴とす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(22、30)から前記貯留室(32)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(26)を有することを特徴とす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、弁部(160、162、164)で前記供給路(22、30)の開度を変更することで前記圧縮流体の前記貯留室(32)への流入量を変更する流量変更弁(154)を備えることを特徴と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、前記弁室(34)、前記パイロット室(52)及び前記吐出路(36)が形成され且つ前記ダイヤフラム弁(40)及び前記パイロット室開閉弁(92)が設けられたハウジング(12)を有し、
前記開閉用操作部材(14)がレバー(14)であることを特徴とす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(92)は、前記パイロット室(52)と前記吐出路(36)とを連通又は連通遮断することを特徴とする圧縮流体吐出制御装置(10)。
- 請求項1~7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、前記開閉用操作部材(14)が操作されたときに前記パイロット室開閉弁(92)を開方向に押圧する押圧部材(78)と、
前記押圧部材(78)を、前記パイロット室開閉弁(92)の閉方向に弾発付勢する弾発部材(106)と、
をさらに備えることを特徴とする圧縮流体吐出制御装置(10)。 - 請求項1~8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(40)に対して変位自在な当接部材(204)を有し、前記当接部材(204)が前記ダイヤフラム弁(40)に当接することで、前記ダイヤフラム弁(40)の変位を規制する変位量規制手段(201)が設けられていることを特徴とする圧縮流体吐出制御装置(10)。
- 請求項9記載の圧縮流体吐出制御装置(10)において、前記当接部材(204)を位置決め固定するロック手段(208a、242)をさらに有することを特徴とする圧縮流体吐出制御装置(10)。
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JP2019548133A JP7041418B2 (ja) | 2017-10-13 | 2018-10-01 | 圧縮流体吐出制御装置 |
DE112018004511.0T DE112018004511T5 (de) | 2017-10-13 | 2018-10-01 | Druckfluidabgabesteuervorrichtung |
RU2020118996A RU2755456C9 (ru) | 2017-10-13 | 2018-10-01 | Устройство управления выпуском сжатой текучей среды |
MX2020003909A MX2020003909A (es) | 2017-10-13 | 2018-10-01 | Dispositivo de control de descarga de fluido comprimido. |
CN201880066574.5A CN111225745B (zh) | 2017-10-13 | 2018-10-01 | 压缩流体喷出控制装置 |
KR1020207013426A KR102363630B1 (ko) | 2017-10-13 | 2018-10-01 | 압축유체 토출 제어장치 |
US16/755,188 US11278940B2 (en) | 2017-10-13 | 2018-10-01 | Compressed fluid discharge control device |
BR112020007284-2A BR112020007284B1 (pt) | 2017-10-13 | 2018-10-01 | Dispositivo de controle de descarga de fluido comprimido |
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JPWO2019073834A1 (ja) | 2020-11-19 |
DE112018004511T5 (de) | 2020-06-10 |
US11278940B2 (en) | 2022-03-22 |
BR112020007284A2 (pt) | 2020-11-03 |
BR112020007284B1 (pt) | 2022-12-06 |
CN111225745A (zh) | 2020-06-02 |
KR20200068711A (ko) | 2020-06-15 |
CN111225745B (zh) | 2021-09-03 |
JP7041418B2 (ja) | 2022-03-24 |
TWI687263B (zh) | 2020-03-11 |
TW201922352A (zh) | 2019-06-16 |
US20210252561A1 (en) | 2021-08-19 |
MX2020003909A (es) | 2020-08-20 |
RU2755456C9 (ru) | 2022-03-04 |
RU2755456C1 (ru) | 2021-09-16 |
KR102363630B1 (ko) | 2022-02-16 |
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