WO2013187113A9 - 流量制御装置 - Google Patents
流量制御装置 Download PDFInfo
- Publication number
- WO2013187113A9 WO2013187113A9 PCT/JP2013/060867 JP2013060867W WO2013187113A9 WO 2013187113 A9 WO2013187113 A9 WO 2013187113A9 JP 2013060867 W JP2013060867 W JP 2013060867W WO 2013187113 A9 WO2013187113 A9 WO 2013187113A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flow rate
- control device
- flow
- rotation
- displacement
- Prior art date
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Images
Classifications
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
-
- 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
- F16K1/02—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 with screw-spindle
- F16K1/04—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 with screw-spindle with a cut-off member rigid with the spindle, e.g. main valves
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/246—Combination of a sliding valve and a lift valve
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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
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/508—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element
-
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8158—With indicator, register, recorder, alarm or inspection means
- Y10T137/8225—Position or extent of motion indicator
- Y10T137/8275—Indicator element rigidly carried by the movable element whose position is indicated
Definitions
- the present invention relates to a flow rate control device that controls the flow rate of a fluid flowing inside while displaying a change in the flow rate of the fluid caused by a user operation.
- a flow control device may be provided to control the flow rate of the fluid.
- a flow rate control device flow rate control valve
- a flow path is provided inside a valve housing connected to a pipe, and the flow path is opened and closed by a needle valve body. It has a configuration. The flow rate of the fluid flowing through the flow path is controlled by the opening degree of the needle valve body.
- this flow control device has a structure for operating the displacement (movement) of the needle valve body, and is engaged with and connected to an operating member provided on the needle valve body so as to be integrally rotatable and having a tooth portion on the side surface.
- a display ring having a scale meshed with the gear and indicating the number of rotations of the needle valve body. That is, when the user rotates the operation member, the rotational force is transmitted to the display ring via the gear and rotates, and the user recognizes the rotation speed of the needle valve body according to the displacement of the display ring. Is possible.
- the present invention has been made to solve the above-mentioned problems, and by making the structure of the flow rate display portion a simpler structure, it is possible to reduce the manufacturing cost and increase the efficiency of the assembly work. It is an object of the present invention to provide a flow rate control device capable of improving the flow rate display accuracy and thereby performing better fluid flow rate control.
- the present invention includes a housing, a flow passage provided in the housing and capable of flowing a fluid, a displacement member capable of controlling a flow rate of the fluid flowing by displacement with respect to the flow passage,
- a flow rate control device comprising a flow rate adjustment display mechanism for operating displacement of the displacement member, wherein the flow rate adjustment display mechanism is provided rotatably with respect to the main body portion and the main body portion, and is connected to the displacement member.
- the main body is formed in an annular shape having a displacement operation portion that displaces the displacement member by a rotation operation and a hole portion through which the displacement operation portion is inserted, and the rotation center is deviated from the insertion position of the displacement operation portion.
- the displacement operating unit includes an engaging unit that directly engages with the rotating unit during rotation, and the rotating unit changes the flow rate of the fluid along a circumferential direction. Is displayed Has a display unit, the position of the display unit is displaced by the engagement of the engaging portion in a circumferential direction, characterized in that it is changed.
- the annular rotation part is disposed in the main body part with the rotation center shifted from the insertion position of the displacement operation part, so that the engagement part and the rotation part of the displacement operation part can be easily and directly engaged.
- the rotational force of the displacement operation unit can be smoothly transmitted to the rotation unit. That is, it is not necessary to interpose another member (for example, a gear) between the displacement operation unit and the rotation unit. For this reason, the meshing error of the displacement operation unit with respect to the rotating unit can be reduced, and the change in the flow rate of the fluid can be accurately displayed. Further, since the number of parts of the flow rate adjustment display mechanism is reduced, it is possible to reduce the manufacturing cost and increase the efficiency of the assembly work of the apparatus. Furthermore, when the display unit of the rotating unit is displaced from the displacement operation unit, when operating the displacement operation unit, the display unit can be visually recognized without interfering with the operation position, and the display unit can be easily viewed during operation. .
- a plurality of inscribed tooth portions are formed along the circumferential direction on the inner peripheral surface of the rotating portion constituting the hole portion, and the engaging portion is provided on the outer peripheral surface of the displacement operation portion as the engagement portion. It is preferable that a meshing portion that meshes with the inscribed tooth portion and an idling portion that does not mesh with the inscribed tooth portion are arranged in parallel along the circumferential direction.
- the flow rate control device includes the meshing portion that meshes with the inscribed tooth portion of the rotating portion, and the idling portion that does not mesh with the inscribed tooth portion, arranged in parallel on the outer peripheral surface of the displacement operation portion.
- the rotating part is operated only while the is engaged with the inscribed tooth part, and when the idling part is opposed to the inscribed tooth part, the rotating part stops rotating and the fluid flow rate is set to a predetermined value. Can continue to display.
- the main body portion is provided with a rotation restricting mechanism capable of restricting the rotation of the rotating portion in a state where the idling portion of the displacement operation portion faces the inscribed tooth portion.
- the flow control device is provided with the rotation restricting mechanism capable of restricting the rotation of the rotating unit, so that the rotation stopped state of the rotating unit can be maintained more reliably, and the display accuracy by the display unit is further improved. can do.
- the rotation restricting mechanism may be an elastic restricting portion that is provided continuously in the main body portion and elastically holds the rotating portion by contacting the inscribed tooth portion.
- the rotation restricting mechanism is an elastic restricting portion that elastically holds the rotating portion, it is possible to effectively restrict the rotation by applying an elastic force to the rotating portion. Further, by transmitting an operating force exceeding the elastic force of the elastic restricting portion from the displacement operating portion to the rotating portion, the rotating portion can be easily rotated. In addition, the number of parts can be further reduced by connecting the elastic restricting portion to the main body portion.
- the elastic restricting portion has a concave portion formed inside the inscribed tooth portion or a convex portion capable of entering between the plurality of inscribed tooth portions.
- the elastic regulating portion has a concave portion formed inside the inscribed tooth portion or a convex portion that can enter between the plurality of inscribed tooth portions, so that the flow rate control device can
- the rotation can be regulated more reliably. And when a rotation part rotates, it can be made to rotate smoothly by displacing a convex part against elastic force.
- the elastic restricting portion is configured to elastically press the rotating portion on the opposite side across the rotation center of the rotating portion with respect to the disposition position of the displacement operation portion.
- the elastic restricting portion elastically presses the rotating portion on the opposite side across the rotation center of the rotating portion with respect to the disposition position of the displacement operating portion so that the rotating portion is brought closer to the displacement operating portion side. Elastic force can be applied. Therefore, the elastic restricting portion can more reliably engage the meshing portion of the displacement operation portion and the inscribed tooth portion of the rotating portion, and can rotate the rotating portion satisfactorily.
- the flow rate adjustment display mechanism may be configured as a unit that can be attached to and detached from the housing.
- the flow rate adjustment display mechanism is a detachable unit, a plurality of mechanisms for controlling the flow rate of fluid can be adjusted by one unit.
- the main body has an insertion hole into which the housing can be partially inserted, and a clip is attached to hold the connection between the housing and the main body in a state where the housing is inserted into the insertion hole. It can be set as a structure.
- the flow rate adjustment display mechanism configured as a unit can be easily attached and detached. According to the present invention, it is possible to reduce the manufacturing cost and increase the efficiency of the assembly work by simplifying the structure of the flow rate display portion, and it is possible to increase the flow rate display accuracy. It becomes. Thereby, the flow control of the fluid can be performed more satisfactorily.
- FIG. 3 is a sectional view taken along line III-III in FIG. 2.
- 4A is a cross-sectional view taken along the line IVA-IVA of FIG. 3
- FIG. 4B is a cross-sectional view taken along the line IVB-IVB of FIG.
- FIG. 5A is a partial cross-sectional view showing a first configuration example of the flow rate adjustment display device
- FIG. 5B is a partial cross-sectional view showing a second configuration example of the flow rate adjustment display device.
- FIG. 6A is a partial cross-sectional view showing a third configuration example of the flow control display device
- FIG. 6A is a partial cross-sectional view showing a third configuration example of the flow control display device
- FIG. 6B is a partial cross-sectional view showing a fourth configuration example of the flow control display device.
- FIG. 7A is a partial cross-sectional view showing a fifth configuration example of the flow control display device
- FIG. 7B is a partial cross-sectional view showing a sixth configuration example of the flow control display device.
- FIG. 4 is a side cross-sectional view showing a state in which the needle valve is displaced upward in the flow rate control device of FIG. 3.
- 9A is a first explanatory diagram illustrating the operation of the display ring of FIG. 4A
- FIG. 9B is a second explanatory diagram illustrating the operation of the display ring of FIG. 4A.
- FIG. 1 is a perspective view showing an overall configuration of a flow control device 10 according to an embodiment of the present invention
- FIG. 2 is a front view showing the flow control device 10 of FIG.
- the front-rear direction of the flow rate control device 10 is the X direction (front is the X1 direction, the rear is the X2 direction), and the left-right width direction is the Y direction (right is the Y1 direction).
- the left direction is also referred to as Y2 direction
- the height direction is also referred to as Z direction (upper direction is Z1 direction, and lower direction is Z2 direction).
- the flow control device 10 schematically includes a flow control display device 12 (flow control display mechanism) constituting the upper side of the entire device and a flow control provided below the flow control display device 12. And a valve 14.
- the flow rate adjustment display device 12 has an operation mechanism for adjusting the flow rate of the fluid (for example, gas or liquid) flowing through the flow rate control valve 14.
- the flow rate adjustment display device 12 includes a housing 16 that houses an operation mechanism of the flow control valve 14, and a knob 18 that is rotatably attached to the upper portion of the housing 16.
- the housing 16 is connected to the flow control valve 14. It is detachably connected.
- the casing 16 has an outer peripheral surface that is flush with the flow rate control valve 14 and extends vertically, and a main mechanism housing that expands in the radial direction while deviating in the X1 direction at the upper part of the extending portion 20. Part 22.
- the knob 18 is provided in the upper part of the main mechanism accommodating portion 22 and is rotated relative to the housing 16 by the user to adjust the flow rate of the fluid in the flow control valve 14. Further, a display window 24 is formed on the side surface in the X1 direction of the main mechanism housing portion 22, and the flow rate change of the fluid (that is, the amount of rotation of the knob 18) is displayed on the display window 24.
- the specific configuration of the flow rate adjustment display device 12 will be described in detail later.
- the flow rate control valve 14 has a housing 26 in which the flow rate adjustment display device 12 is mounted.
- the housing 26 includes a first port 28 on the lower part (Z2 direction) side of the body part extending vertically, and a second port 30 extending in the X1 direction near the upper part of the body part. That is, the housing 26 has a substantially L shape in a side view.
- a first pipe 32 to which fluid is supplied is connected to the first port 28, and a second pipe 34 to which fluid is discharged is connected to the second port 30.
- the flow direction of the fluid in the flow control valve 14 is not particularly limited, and the fluid may be supplied to the second port 30 and discharged from the first port 28.
- FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2
- FIG. 4A is a cross-sectional view taken along the line IVA-IVA in FIG. 3
- FIG. 4B is a cross-sectional view taken along the line IVB-IVB in FIG.
- the housing 26 constituting the flow control valve 14 includes a first body 36 having a first port 28 and a second body having a second port 30 and assembled to the first body 36. 38. Inside the first and second bodies 36, 38, a fluid flow path 40 that flows from the first port 28 to the second port 30 is formed.
- a needle valve 42 (displacement member) that is displaceable with respect to the flow passage 40 is provided inside the first and second bodies 36 and 38.
- the needle valve 42 has a function of controlling the flow state of the fluid flowing through the flow passage 40 by displacement.
- FIG. 3 shows a closed state in which the flow passage 40 is blocked by the needle valve 42.
- the first body 36 has, for example, a main cylindrical portion 44 formed in a cylindrical body by a resin material, and includes a first port 28 on the lower side of the main cylindrical portion 44.
- a screw 28 a into which the first pipe 32 is screwed is engraved on the outer peripheral surface of the first port 28.
- a first port side flow path 46 through which fluid can flow is formed along the axis (Z direction) inside the first port 28.
- the main cylindrical portion 44 has a larger diameter than the first port 28 and extends vertically.
- the lower side of the main cylindrical portion 44 is formed in a substantially hexagonal cross section, and the upper side is formed in a circular cross section.
- a valve body accommodating chamber 48 communicating with the first port side flow path 46 is formed inside the main cylindrical portion 44, and the second body 38 and the check valve 50 are arranged in the valve body accommodating chamber 48. Is done.
- a tapered step portion 52 is formed that has an obliquely reduced diameter and continues to the first port side flow path 46.
- a first body side accommodation space 54 in which a part of the second body 38 is accommodated is formed in the upper part of the valve body accommodation chamber 48.
- a connecting hook portion 44 a that protrudes inward is formed on the inner wall of the main cylindrical portion 44 constituting the first body-side accommodation space 54.
- the connection hook portion 44a is hooked on the hook portion 64a of the second body 38, whereby the first body 36 and the second body 38 are connected.
- the second body 38 to which the first body 36 is connected is formed of the same resin material as that of the first body 36, for example.
- the second body 38 includes a body cylindrical portion 56 that constitutes the outer appearance of the upper and lower intermediate portions of the flow control valve 14, a protruding cylindrical portion 58 that protrudes downward from the lower end side of the body cylindrical portion 56, and a body cylindrical portion.
- the second port 30 is connected to the outer peripheral surface 56 and extends in the X1 direction, and the insertion tube portion 60 protrudes upward from the upper portion of the body tubular portion 56.
- the body cylindrical portion 56 is formed in a double cylindrical structure downward, and has an inner cylinder 62 extending vertically and an outer cylinder 64 extending vertically outside the inner cylinder 62. In the meantime, an annular channel 66 through which a fluid can flow is provided.
- a sliding space 68 capable of sliding the needle valve 42 is formed inside the inner cylinder 62.
- the step portion 70 defines a downward displacement limit of the needle valve 42.
- the communication port 72 allows fluid to flow by communicating the sliding space 68 and the annular flow channel 66.
- the outer cylinder 64 surrounds the inner cylinder 62 with the annular channel 66 interposed therebetween, and the second port 30 is connected to the side surface in the X1 direction. Further, on the outer peripheral surface near the lower portion of the outer cylinder 64, there is a hook portion 64a that is locked to the connecting hook portion 44a of the first body 36, and along the circumferential direction of the outer cylinder 64 below the hook portion 64a. An engraved groove 64b is formed. An annular seal member 74 is attached to the groove portion 64b in a connected state of the first and second bodies 36 and 38. The first and second bodies 36 and 38 are connected to each other in an airtight (or liquid-tight) manner by engaging the connecting hook portion 44 a and the hooking portion 64 a and interposing a seal member 74.
- the protruding cylindrical portion 58 connected to the lower side of the trunk cylindrical portion 56 is formed with a smaller diameter than the trunk cylindrical portion 56 and protrudes downward by a predetermined length.
- a fluid guide path 76 that extends vertically and communicates with the sliding space 68 in the body cylindrical portion 56 is formed inside the protruding cylindrical portion 58.
- a flange portion 78 is formed in the lower portion of the protruding cylindrical portion 58.
- the flange portion 78 is once expanded radially outward and then tapered downward.
- the lower end surface of the flange portion 78 is disposed close to the tapered step portion 52 of the first body 36 in a connected state of the first and second bodies 36 and 38.
- the flange portion 78 has a fluid flow groove 78a cut out in four directions (X direction and Y direction).
- the fluid flow groove 78a connects the first port side flow path 46 and the valve body accommodating chamber 48 to each other. Communicate.
- a check valve 50 is mounted on the outer peripheral surface of the trunk portion (between the trunk cylindrical portion 56 and the flange portion 78) of the protruding cylindrical portion 58.
- the check valve 50 is formed in an annular shape surrounding the protruding cylinder portion 58 by an elastic material such as rubber, for example.
- the check valve 50 includes a mounting portion 50a that extends linearly downward in a cross-sectional view, and a membrane-like portion 50b that protrudes obliquely outward in the radial direction from the mounting portion 50a.
- the membrane portion 50 b abuts the inner wall of the valve body storage chamber 48 to divide the valve body storage chamber 48 in the vertical direction, and guides the fluid supplied from the first port side flow path 46 to the fluid guide path 76. .
- the second port 30 is formed in a cylindrical shape extending in a direction orthogonal to the axial direction of the body cylindrical portion 56.
- a second port side flow path 80 through which a fluid flows is formed.
- the second port side flow path 80 communicates with the annular flow path 66 via a connection path 82 formed at an end portion in the X2 direction (the body tubular portion 56 side).
- the second port side channel 80 is provided with a joint mechanism 84 for connecting the second pipe 34 (see FIG. 1) for discharging the fluid.
- the joint mechanism 84 includes a chuck 86 that locks the second pipe 34 inserted into the second port side flow path 80, a guide 88 that is locked to the inner peripheral surface of the second port 30, and the guide 88. It has a release bush 90 that is freely displaceable and releases the locked state of the second pipe 34 by the chuck 86, and a packing 92 that abuts the second pipe 34 and keeps it airtight (or liquid tight).
- the chuck 86 is formed in a substantially cylindrical shape by, for example, pressing a thin plate material made of a metal material, and has a claw portion 86a inclined toward the radially inner side and a protruding portion 86b bent toward the radially outer side.
- the guide 88 is formed in a substantially cylindrical shape by the same processing as the chuck 86, and is provided so that the outer peripheral surface is in contact with the inner peripheral surface of the second port 30.
- the release bush 90 is formed into a cylindrical shape having an insertion hole 94 made of, for example, a resin material, and is slidably inserted into the guide 88 and the chuck 86 from the end portion on the X2 direction side to the body portion.
- a connection end 90 a that protrudes radially outward is formed at the end of the release bush 90 on the X1 direction side.
- the packing 92 is formed in an annular shape by an elastic material such as rubber, for example, and is disposed in the second port 30 so as to overlap the end portion of the chuck 86 on the X2 direction side.
- the packing 92 includes an outer bulging portion 92 a that contacts the inner surface of the second port 30, and a seal portion 92 b that protrudes from the inner surface and slidably contacts the outer surface of the second pipe 34.
- the second pipe 34 When connecting the second pipe 34, the second pipe 34 is connected only by being inserted into the inner part of the second port 30 through the insertion hole 94 of the release bush 90. That is, when the second pipe 34 is inserted into the second port 30, the claw part 86 a of the chuck 86 bites into the outer surface of the second pipe 34 obliquely, and the seal part 92 b of the packing 92 is airtight (or liquid tight). The second pipe 34 is held in contact. As a result, the second pipe 34 is firmly prevented from coming off from the second port 30.
- the claw portion 86a of the chuck 86 is brought down by moving the release bush 90 in the X2 direction, and the second pipe 34 is pulled out in the X1 direction. Thereby, the second pipe 34 is easily removed from the second port 30.
- an insertion tube portion 60 is formed to protrude from the upper surface of the body tube-shaped portion 56 where the second port 30 is continuous.
- the housing 16 of the flow rate adjustment display device 12 is attached to the outside of the insertion cylinder portion 60.
- drum cylindrical part 56 is extended as it is up and down, and this sliding space part 68 is formed in the upper end part of the insertion cylinder part 60. As shown in FIG.
- the opening 68a communicates.
- a thick portion 60a having a diameter increased radially outward, and a constricted portion 60b that is recessed radially inward below the thick portion 60a are formed on the outer peripheral surface of the insertion cylinder portion 60.
- the thick portion 60 a guides the connection posture between the flow rate adjustment display device 12 and the flow rate control valve 14 by making surface contact with the inner peripheral surface of the insertion hole 150 of the housing 16.
- the clip 156 is inserted into the constricted portion 60b when connected.
- the needle valve 42 is movably inserted into the sliding space 68 of the second body 38 configured as described above.
- the needle valve 42 is a solid rod member that extends along the axial direction (Z direction) of the body cylindrical portion 56.
- the needle valve 42 is provided with a flow rate control unit 96, a seating unit 98 and a shaft unit 100 from the lower part to the upper part.
- the flow control unit 96 is formed in a columnar shape and extends a predetermined length. Further, the outer peripheral surface of the flow rate control unit 96 has no gap with respect to the inner peripheral surface of the connecting portion of the protruding cylindrical part 58 and the body cylindrical part 56, and has an outer diameter that allows the needle valve 42 to slide in the vertical direction. Is set. In a state where the needle valve 42 is positioned below (see FIG. 3), the fluid flow is blocked by the mechanical arrangement relationship of the flow rate control unit 96 with respect to the body cylindrical part 56 and the protruding cylinder part 58.
- the flow rate control unit 96 has a notch groove 102 which is engraved with a predetermined length (for example, a length approximately equal to the displacement amount of the needle valve 42) from the lower end surface along the axial direction of the outer peripheral surface.
- a plurality of cutout grooves 102 are provided along the circumferential direction so as to be able to face the communication port 72 of the second body 38, and the communication port 72 is displaced when the needle valve 42 is displaced upward from a lower position. Configured to communicate with. In other words, the fluid that has flowed into the fluid guide path 76 of the second body 38 can flow into the communication port 72 through the notch groove 102.
- the seating portion 98 is formed in a circular cross section, expands radially outward from the flow rate control portion 96, and is accommodated in the sliding space portion 68 of the second body 38.
- An annular groove 98 a is formed on the outer peripheral surface of the seating portion 98, and an O-ring 104 that prevents fluid from flowing through the sliding space 68 is attached to the annular groove 98 a.
- the lower end surface of the seating portion 98 faces the stepped portion 70 constituting the sliding space portion 68, and the needle valve 42 has a displacement limit defined by the contact between the stepped portion 70 and the seating portion 98.
- the shaft portion 100 is formed in a substantially rectangular cross section having arcuate portions on both sides in the X direction (see FIG. 4B), extends a predetermined length along the axial direction, and is accommodated in the sliding space portion 68.
- a male screw portion 106 is engraved in the arc-shaped portion of the shaft portion 100, and the male screw portion 106 is screwed into a nut 108 provided in the body cylindrical portion 56 (see FIG. 3). Then, the rotation transmission member 110 of the flow rate adjustment display device 12 having the advance / retreat space portion 120 substantially matching the cross-sectional shape of the shaft portion 100 is attached to the shaft portion 100 extending from the upper portion of the nut 108.
- the flow rate control valve 14 is configured as described above, and the fluid flow path 40 in the interior includes the first port side flow path 46, the valve body accommodating chamber 48, the fluid guide path 76, the sliding space 68, and the communication port 72.
- the annular channel 66, the connection channel 82, and the second port side channel 80 are constructed.
- the needle valve 42 blocks the gap between the fluid guide path 76 and the sliding space portion 68 by the flow rate control unit 96, and causes the notch groove 102 to communicate with the sliding space portion 68 in accordance with the displacement. Then, the flow rate of the fluid is adjusted according to the displacement amount (opening degree) of the notch groove 102.
- the flow adjustment display device 12 (housing 16) is detachably mounted on the upper part of the flow control valve 14.
- the flow rate adjustment display device 12 includes a rotation transmission member 110 and a display ring 114 in the casing 16 in addition to the casing 16 and the knob 18 described above.
- the rotation transmission member 110 is a member for operating the displacement of the needle valve 42, and extends inside both the flow rate adjustment display device 12 and the flow rate control valve 14.
- the rotation transmitting member 110 includes a lower cylindrical portion 116 that extends downward from a substantially middle portion in the vertical direction and an upper column portion 118 that extends upward from the upper surface of the lower cylindrical portion 116.
- the lower cylindrical portion 116 is formed to have an outer diameter that substantially matches the inner diameter of the sliding space portion 68. Further, as described above, an advancing / retreating space portion 120 that is formed in a substantially rectangular cross section that substantially matches the cross sectional shape of the shaft portion 100 and that allows the needle valve 42 to be displaced up and down is provided inside the lower cylindrical portion 116. It has been.
- the advance / retreat space portion 120 is engaged with the shaft portion 100 in the rotational direction by inserting the shaft portion 100 so as to match the cross-sectional shape thereof, and can transmit the rotational force from the rotation transmitting member 110 to the needle valve 42. And
- the lower cylindrical portion 116 is inserted from the opening 68 a of the second body 38 until it abuts on the nut 108 provided in the sliding space 68.
- the upper column part 118 is formed in a columnar shape having a smaller diameter than the lower cylinder part 116, extends upward through the housing 16, and is connected to the knob 18 at the upper part. Further, a meshing portion 122 (see FIG. 4A) is formed on the outer peripheral surface of the upper column portion 118 so as to protrude radially outward from the upper surface of the lower cylindrical portion 116 over a predetermined height position.
- the meshing portion 122 is configured as an engaging portion that engages with a display ring 114 provided inside the flow rate adjustment display device 12, and has a function of operating the display ring 114. This configuration will be described later.
- the housing 16 includes the extending portion 20 and the main mechanism accommodating portion 22.
- the main mechanism accommodating portion 22 is formed in a three-dimensional shape with respect to the extending portion 20 such that the outer shape in the Y direction (width direction) and the X2 direction slightly bulge and the outer shape in the X1 direction bulges greatly.
- the outer shape is unevenly distributed in the X1 direction from the axis of the flow control valve 14 (needle valve 42) in a plan sectional view (see FIG. 4A). It is formed in a circular shape (so-called oval shape).
- the casing 16 can be divided into an upper case 124 and a lower case 126 in the main mechanism accommodating portion 22.
- the upper case 124 is formed in a dome shape having an internal space 128 having a predetermined volume when attached to the lower case 126.
- the upper case 124 has a cylindrical lower mounting portion 130 that is locked to the lower case 126 from the bottom to the top, and an upper side that is connected to the lower mounting portion 130 and has an internal space 128 formed inside. It has the coating
- the lower mounting portion 130 has a mounting hole 136 having a relatively large inner diameter, and the upper portion of the lower case 126 is inserted into the mounting hole 136. Further, a locking port 138 is formed on the side surface of the lower mounting portion 130 in four directions (Y direction and X direction). The hooks 158a and 158b of the lower case 126 are inserted into the locking holes 138.
- the upper covering portion 132 is formed in a bottomed cylindrical shape having a tapered outer peripheral surface and a flat upper surface that are gradually reduced in diameter upward from the connecting portion of the lower lower mounting portion 130.
- the display ring 114 is rotatably accommodated in the upper covering portion 132 (internal space 128).
- the display window 24 described above is formed on the side surface in the X1 direction of the upper covering portion 132, and the scale 174 of the display ring 114 can be visually recognized from the display window 24.
- the upper protrusion 134 is formed in a cylindrical shape having a predetermined inner diameter, and is provided so that its axis coincides with the axis of the flow control valve 14.
- the upper protrusion 134 is inserted into the knob 18 and rotatably supports the knob 18.
- a knob rotation restricting portion 140 is provided on the upper side, and further on the lower side of the knob rotation restricting portion 140, a first annular protrusion 142 that circulates in a radially outward direction, A second annular protrusion 144 having a diameter smaller than that of the first annular protrusion 142 is formed on the lower side of the first annular protrusion 142, and the inner protrusion 18a at the lower end of the knob 18 is the first and second protrusions.
- the second annular protrusions 142 and 144 can be engaged in stages.
- the knob 18 attached to the upper protrusion 134 is formed in a bottomed cylindrical shape with the upper surface side being the bottom, and a cylindrical fitting portion 146 is formed to extend downward at the center of the upper surface in the cylinder. Yes.
- the fitting portion 146 is fitted and fixed to the upper column portion 118 of the rotation transmission member 110 and smoothly transmits the rotational force of the knob 18 to the rotation transmission member 110.
- a plurality of protrusions 18b are formed on the outer peripheral surface of the wall portion of the knob 18 that surrounds the fitting portion 146 so that the user can easily grasp it.
- a contact portion 147 that can contact the knob rotation restricting portion 140 is provided on the upper portion of the inner peripheral surface of the knob 18, and an inner protrusion 18 a that protrudes radially inward is provided on the lower portion of the inner peripheral surface. It has been.
- the knob 18 is switched between a rotatable state and an anti-rotation state depending on the vertical position with respect to the upper protrusion 134. That is, in a state where the knob 18 is below the upper protrusion 134 and the inner protrusion 18a is caught by the second annular protrusion 144, the contact portion 147 of the knob 18 contacts the knob rotation restricting portion 140 and rotates. Be regulated. When the knob 18 is operated to rotate, the contact between the contact portion 147 and the knob rotation restricting portion 140 is released by pulling up the inner protrusion 18 a so as to get over the second annular protrusion 144. As a result, the knob 18 is rotatable with respect to the upper case 124.
- the lower case 126 to which the upper case 124 is attached is connected to the above-described extending portion 20 into which the insertion tube portion 60 of the flow control valve 14 is inserted and the upper portion of the extending portion 20, and the upper case 124 is attached to the lower case 126. And a pedestal portion 148.
- the extension part 20 is formed in a cylindrical shape and has an insertion hole 150 into which the insertion cylinder part 60 of the flow control valve 14 can be inserted.
- the extending portion 20 includes a pair of mounting hole portions 152 penetrating along the X direction as shown in FIG. 1, and the X2 direction side at the same height as the mounting hole portion 152 as shown in FIG. And a mounting recess 154 formed on the surface.
- the mounting hole 152 and the mounting recess 154 have the same height as the constricted portion 60 b of the flow control valve 14 in a state where the lower end portion of the extending portion 20 is in contact with the upper surface of the body cylindrical portion 56 of the flow control valve 14.
- the clip 156 can be inserted from the X2 direction.
- the clip 156 includes a connecting portion 156a that extends linearly in the Y direction at the end on the X2 side, and an insertion tube that extends in a predetermined length X1 direction from both ends of the connecting portion 156a. And a pair of mounting and holding bars 156b that are curved so as to be able to be engaged with the constricted portion 60b of the portion 60.
- the pair of mounting holding bars 156b enter through the mounting holes 152, and the curved portion closely contacts the constricted portion 60b.
- the constricted portion 60b is elastically sandwiched.
- burr 156b protrudes diagonally toward radial direction outer side, and it is comprised so that the clip 156 can be smoothly guided with respect to the insertion cylinder part 60 at the time of insertion of the clip 156. .
- the extension portion 20 is fixed to the insertion tube portion 60 by the connecting portion 156a entering the mounting recess 154 of the extension portion 20.
- the pair of mounting holding bars 156b are locked to the constricted portion 60b, and the connecting portion 156a is locked to the mounting recess 154, so that the flow rate adjustment display device 12 and the flow rate control valve 14 are mounted.
- the clip 156 is pulled out in the X2 direction so that the locked state of both is easily released, so that it can be easily removed.
- a relatively large mounting hook 158a having a diameter increased radially outward is formed on the outer peripheral surface of the extending portion 20 on the X2 direction side, and the mounting hook 158a is an upper case. 124 is locked to the locking opening 138 on the X2 direction side.
- the pedestal 148 of the lower case 126 is formed in an outer shape to which the lower mounting part 130 of the upper case 124 can be attached.
- a mounting hook 158b is formed to protrude outward.
- the mounting hooks 158b are formed in a pair of upper and lower sides, and one is inserted into the locking port 138, and the other is configured to sandwich the lower end portion of the upper case 124 by pressing the lower end surface of the lower mounting portion 130.
- mounting hooks are formed on both sides of the pedestal 148 in the Y direction. That is, the mounting hooks 158a and 158b and the mounting hooks (not shown) are respectively locked by the four locking holes 138 formed in the X direction and the Y direction. Thereby, the upper case 124 and the lower case 126 are firmly connected.
- An arrangement surface 148 a on which the display ring 114 is arranged is formed on the upper surface of the base portion 148.
- a pair of spacers 160 projecting upward in the X2 direction side and a detent portion 162 (elastic restriction portion) inserted into the display ring 114 are formed.
- the pair of spacers 160 faces the display ring 114 and restricts the display ring 114 from moving in the X2 direction.
- the detent portion 162 is formed from the vicinity of the substantially central portion of the arrangement surface 148a to the inner surface on the X1 direction side of the display ring 114, and avoids unnecessary rotation of the display ring 114 by elastically contacting the display ring 114. It is comprised as a rotation restricting mechanism.
- the detent portion 162 includes a support portion 164 continuously provided so as to protrude on the arrangement surface 148a, and extends from both ends in the Y direction of the support portion 164 toward the X1 direction.
- a pair of bent extending portions 166 that extend again in the X1 direction after being bent toward the X direction, and a bridging portion 168 in which the ends of the pair of bent extending portions 166 are cross-linked on the X1 direction side.
- the bent extension portion 166 and the bridging portion 168 are supported by the support portion 164 so that they are spaced upward from the arrangement surface 148a (see also FIG. 3), and are elastically deformable along the XY plane. ing.
- the bridging portion 168 abuts between the inscribed tooth portions 176 of the display ring 114, and the display ring 114 is elastically pressed in the X1 direction, thereby restricting the rotation of the display ring 114.
- the display ring 114 is formed in an annular shape having a hole 172 through which the rotation transmitting member 110 is inserted.
- the center of rotation is arranged with respect to the insertion position of the rotation transmission member 110.
- the display ring 114 is formed in a tapered surface whose upper side of the outer peripheral surface is inclined, and a scale 174 (display unit) for displaying a change in the flow rate of the fluid is printed on the tapered surface.
- the scale 174 is arranged so as to face the display window 24 when the annular display ring 114 is arranged eccentrically in the X1 direction in the housing 16, and is clearly visible to the user.
- the rotation transmitting member 110 is inserted into the hole 172, and the detent part 162 is arranged on the lower side of the hole 172.
- a plurality (ten in FIG. 4A) of inscribed tooth portions 176 (gears) are formed along the circumferential direction on the inner peripheral surface of the display ring 114 constituting the hole portion 172.
- a space 177 between adjacent inscribed tooth portions 176 is set to an interval at which the meshing portion 122 formed in the rotation transmitting member 110 can enter (engage).
- the display ring 114 moves in the rotation direction when the meshing portion 122 meshes.
- the width of the inscribed tooth portion 176 is such that after the meshing portion 122 enters the interdental space 177 and moves the meshing display ring 114 by a predetermined amount and then comes out, the meshing portion 122 rotates once and rotates to the next interdental space 177. It is a width that can enter.
- the inscribed tooth portion 176 protrudes by a predetermined amount inward in the radial direction, and the side surface on the protruding side is formed on an arc surface 176a that substantially matches the curvature of the rotation transmitting member 110 (idling portion 178).
- the meshing portion 122 is formed to project from the outer peripheral surface of the rotation transmitting member 110 with a projecting amount that substantially matches the depth of the interdental 177.
- the outer peripheral surface of the rotation transmitting member 110 aligned with the meshing portion 122 in the circumferential direction is an arcuate idling portion 178 in which nothing is formed.
- the idling portion 178 abuts on the circular arc surface 176a in a state where the meshing portion 122 is not meshed with the inscribed tooth portion 176 (non-meshing state), but the contact area is small and the rotation transmitting member 110 is easily rotated.
- the bridging portion 168 of the detent portion 162 is formed to be smaller than the curvature of the arcuate surface 176a and wider than one inscribed tooth portion 176.
- the bridging portion 168 is supported so as to be pushed out in the X1 direction by the bending extension portion 166, and in a state where the idling portion 178 is opposed to and in contact with the inscribed tooth portion 176, the bridging portion 168 is elastic to both ends of the arc surface 176a.
- the display ring 114 is moderately abutted and an appropriate elastic force is applied. As a result, the display ring 114 is sandwiched between the casing 16 (upper covering portion 132) and the detent portion 162, and the displacement thereof (changes in the scale 174) is firmly prevented.
- the structure of the flow volume adjustment display apparatus 12 which concerns on this embodiment is not limited to said structure,
- the various mechanism which can implement physically rotation and a stop of the display ring 114 is employable.
- some other configuration examples first to sixth configuration examples
- the number of the inscribed tooth portions 176A formed on the display ring 114A is equal to the number of the inscribed tooth portions 176 formed on the display ring 114 of the present embodiment. It is set to double the number (20).
- the convex part 170 is formed in the width direction center part of the bridge
- variation of the scale 174 in a non-meshing state is prevented more reliably.
- the convex portion 170 (the bridging portion 168) is elastically displaced in the X2 direction.
- the rotation of the ring 114A is allowed. Therefore, the flow control display device 12A can obtain the same effects as the flow control display device 12 of the present embodiment.
- the flow rate adjustment display device 12B according to the second configuration example shown in FIG. 5B is different from the flow rate adjustment display devices 12 and 12A in that the rotation transmission member 110A has two (a pair) meshing portions 122A.
- the display ring 114A and the detent unit 162A are the same as the flow rate adjustment display device 12A according to the first configuration example.
- the pair of meshing portions 122A are spaced apart by an interval at which one inscribed tooth portion 176A of the display ring 114A can be inserted, and the pair of meshing portions 122A sandwich one inscribed tooth portion 176A. Accordingly, the pair of meshing portions 122A and the inscribed tooth portions 176A mesh with each other with higher accuracy, and the display ring 114A can be rotated favorably.
- the support portion 180 of the detent portion 162B is formed in an arc shape in a plan view and is continuously provided on the arrangement surface 148a.
- the detent portion 162B includes an outer arc-shaped portion 182 that extends in an arc shape so as to pass close positions of the plurality of inscribed tooth portions 176 and bridges both ends in the Y direction of the support portion 180, and an outer arc-shaped portion 182.
- the inner arc-shaped portion 184 interposed so as to have a predetermined gap, and the convex portion 170 formed on the side surface of the outer arc-shaped portion 182 in the X1 direction.
- the convex part 170 engages with the inscribed tooth part 176 by entering the recess (arc surface 176 a) of the inscribed tooth part 176 and presses the display ring 114. Therefore, the detent portion 162B can favorably regulate the rotation of the display ring 114 in the non-meshing state. Further, the detent portion 162B can elastically support the outer arcuate portion 182 by the inner arcuate portion 184 when the outer arcuate portion 182 is bent inward as the display ring 114 rotates.
- the flow rate adjustment display device 12D includes a detent portion 162C having substantially the same shape as the detent portion 162B according to the third configuration example, but a pair of convex portions 170A are provided on the outer arc-shaped portion 182. It differs in that it is formed.
- the pair of convex portions 170A are formed at an interval at which one inscribed tooth portion 176 can be sandwiched therebetween, and enter a space between two teeth 177 adjacent to one inscribed tooth portion 176 in a non-engaged state. Press the display ring 114.
- 162 C of detent parts can control more reliably the rotation of the display ring 114 in a non-meshing state.
- an arcuate portion 188 is formed at one end portion (end portion in the Y1 direction) of the support portion 186 having a flat surface 186a in the X1 direction. It has a configuration.
- the arc-shaped portion 188 extends in an arc shape so as to pass through the adjacent positions of the plurality of inscribed tooth portions 176, and has a convex portion 170 at the end located in the X1 direction. Is formed.
- the detent portion 162D is configured in this way, the depression (arc surface 176a) of the inscribed tooth portion 176 can be elastically pressed by the convex portion 170, and the rotation of the display ring 114 can be well controlled. it can.
- the detent portion 162E of the flow rate adjustment display device 12F according to the sixth configuration example shown in FIG. 7B is different from the detent portion 162D according to the fifth configuration example in that the arc-shaped portion 190 has a flat surface 186a in the X1 direction. It is the structure which bridge
- the convex portion 170 is formed on the side surface of the arc-shaped portion 190 in the X1 direction.
- the flow control device 10 is basically configured as described above, and the operation and effect thereof will be described next.
- FIG. 8 is a side sectional view showing a state in which the needle valve 42 is displaced upward from the flow control device 10 of FIG. 3, and
- FIG. 9A is a first explanatory view showing the operation of the display ring 114 of FIG. 4A.
- FIG. 9B is a second explanatory view showing the operation of the display ring 114 of FIG. 4A.
- the overall operation of the flow control valve 14 will be described based on the cross-sectional views of FIGS. 3 and 8.
- the flow control device 10 shown in FIG. 3 shows a state in which the needle valve 42 is displaced to the lowest end (Z2 direction) side. In this state, the flow control unit 96 of the needle valve 42 is in the fluid guide path of the housing 26. By being inserted into 76, the communication of the flow passage 40 is blocked.
- the flow control device 10 shown in FIG. 8 shows a state in which the needle valve 42 is displaced to the uppermost end (Z1 direction). In this state, the lower end of the flow control unit 96 is the sliding space 68.
- the flow passage 40 is in an open state in which it is in communication.
- the flow control valve 14 is supplied with pressure fluid from a fluid pressure device (not shown) or the like to the first port 28 of the first body 36 via the first pipe 32 in the closed state. Then, the pressure fluid flows to the lower side of the first port side flow path 46, the valve body accommodation chamber 48 and the fluid guide path 76.
- the valve body accommodating chamber 48 is provided with a check valve 50 in which the film-like portion 50 b extends to contact the inner surface of the first body 36. Therefore, the pressure fluid that has flowed into the valve body storage chamber 48 is prevented from flowing downstream (on the second port 30 side) by the check valve 50 and the flow rate control unit 96.
- the knob 18 of the flow rate adjustment display device 12 is rotated to displace the needle valve 42 upward.
- the rotation restriction state by the contact portion 147 and the knob rotation restriction portion 140 is released.
- the inner protrusion 18 a of the knob 18 moves from a position below the second annular protrusion 144 to between the second annular protrusion 144 and the first annular protrusion 142. Thereby, it will be in a rotatable state.
- the rotation transmission member 110 inserted into the internal fitting portion 146 rotates integrally, and the rotation of the rotation transmission member 110 is transmitted to the shaft portion 100 of the needle valve 42.
- the male screw portion 106 is screwed into the nut 108, and performs a linear motion that is relatively displaced in the vertical direction with respect to the nut 108 according to the transmitted rotation amount. That is, the entire needle valve 42 is displaced upward (Z1 direction) by the rotation of the knob 18 in a predetermined direction.
- the needle valve 42 is stably guided along the axial direction of the rotation transmitting member 110 because the cross-sectional shapes of the shaft portion 100 and the advance / retreat space portion 120 match.
- the flow rate control portion 96 of the needle valve 42 enters the sliding space portion 68, and the notch groove 102 faces the communication port 72.
- the flow passage 40 communicates with the notch groove 102 and the communication port 72, and allows the pressure fluid to flow.
- the pressure fluid that has flowed into the fluid guide path 76 is guided to the annular channel 66 through the notch groove 102, the sliding space 68, and the communication port 72, and is connected to the connection channel 82 and the first channel from the annular channel 66. It flows out to the second pipe 34 through the two-port channel 80. At this time, the pressure fluid passes through the fluid flow groove 78 a of the flange portion 78, so that rectification is promoted.
- the flow rate of the pressure fluid varies in proportion to the amount of the notch groove 102 entering the sliding space 68, that is, the amount of upward displacement of the needle valve 42.
- the flow rate is small, and when the needle valve 42 is gradually raised, the notch groove is formed in the sliding space portion 68. 102 is gradually exposed, and the flow rate of the pressure fluid increases.
- the user When adjusting the flow rate of the pressure fluid, the user confirms the scale 174 of the flow rate adjustment display device 12 to operate the flow rate to a desired flow rate. Therefore, an operation of changing the scale 174 based on the rotation operation of the knob 18 is performed inside the flow rate adjustment display device 12.
- the flow rate adjusting display device 12 rotates the upper column portion 118 of the rotation transmitting member 110 around the axis, and the meshing portion. 122 also rotates integrally.
- the display ring 114 is in a rotation stopped state. Become.
- the bridging portion 168 of the detent portion 162 abuts on the inscribed tooth portion 176 and presses the display ring 114 in the X1 direction side, whereby the displacement of the display ring 114 is restricted. Therefore, the scale 174 of the display ring 114 is fixed, and a predetermined value is continuously displayed regarding the flow rate of the pressure fluid.
- the bridging portion 168 and the bent extension portion 166 connecting portion are curved, and the arc surface 176a of the inscribed tooth portion 176 is easily guided in the rotational direction while being pressed in the X1 direction.
- the scale 174 moves by a certain amount. For example, when the rotation transmitting member 110 makes one rotation, the meshing portion 122 is displaced by one inscribed tooth portion 176. As a result, the scale 174 that has been changed by one rotation is arranged in the display window 24 of the flow rate adjustment display device 12.
- the annular display ring 114 is disposed in the housing 16 with the rotation center shifted from the insertion position of the rotation transmission member 110.
- the meshing portion 122 of the rotation transmission member 110 and the display ring 114 can be directly engaged, and the rotational force of the rotation transmission member 110 can be smoothly transmitted to the display ring 114. That is, it is not necessary to interpose another member (for example, a gear disclosed in JP 2011-43196 A) between the rotation transmission member 110 and the display ring 114. For this reason, the meshing error of the rotation transmitting member 110 with respect to the display ring 114 can be reduced, and the change in the flow rate of the fluid can be accurately displayed.
- another member for example, a gear disclosed in JP 2011-43196 A
- the number of parts of the flow rate adjustment display device 12 is reduced, it is possible to reduce the manufacturing cost and increase the efficiency of the device assembly work. Further, since the scale 174 of the display ring 114 is disposed at a position shifted from the knob 18 operated by the user, the scale 174 can be easily seen even while the knob 18 is operated, and the flow rate can be easily set.
- the flow rate control device 10 includes a meshing portion 122 that meshes with the inscribed tooth portion 176 of the display ring 114 and an idling portion 178 that does not mesh with the inscribed tooth portion 176 arranged on the outer peripheral surface of the rotation transmitting member 110.
- the display ring 114 is operated only while the meshing part 122 is engaged with the inscribed tooth part 176, and when the idling part 178 is in contact with the inscribed tooth part 176, the rotation of the display ring 114 is stopped.
- the fluid flow rate can be continuously displayed as a predetermined value.
- the number of parts can be further reduced by connecting the detent portion 162 to the casing 16. Further, the detent portion 162 elastically presses the inscribed tooth portion 176 on the opposite side across the rotation center of the display ring 114 with respect to the position where the rotation transmission member 110 is disposed, so that the display ring 114 is held by the rotation transmission member 110. An elastic force can be applied so as to approach the side. Therefore, the detent part 162 can more reliably engage the meshing part 122 and the inscribed tooth part 176, and can rotate the display ring 114 satisfactorily.
- the flow rate adjustment display device 12 is configured as a detachable unit, and the housing 26 and the casing 16 are attached by the clip 156, so that the unit can be easily attached and detached, and one unit (flow rate adjustment) A plurality of flow control valves 14 can be adjusted by means of the display device 12).
- the present invention has been described with reference to preferred embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. Yes.
- the above-described flow rate adjustment display device 12 can be operated by attaching it to another device (for example, a pressure reducing valve) that controls the flow of fluid.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
Description
本発明によれば、流量の表示部分の構造を簡単な構成とすることにより、製造コストの低減及び組立作業の効率化を図ることが可能であり、さらに、流量の表示精度を高めることが可能となる。これにより流体の流量制御を一層良好に行うことができる。
図7Aに示す第5構成例に係る流量調節表示装置12Eのディテント部162Dは、X1方向に平坦面186aを有する支持部186の一端部(Y1方向の端部)に円弧状部188を形成した構成となっている。円弧状部188は、第3構成例のディテント部162Bと同様に、複数の内接歯部176の近接位置を通るように円弧状に延設され、X1方向に位置する端部に凸部170が形成されている。このようにディテント部162Dを構成しても、凸部170によって内接歯部176の窪み(円弧面176a)を弾性的に押さえることが可能となり、表示リング114の回転を良好に規制することができる。
Claims (8)
- ハウジング(26)と、前記ハウジング(26)内に設けられ流体が流通可能な流通路(40)と、前記流通路(40)に対する変位により流通する流体の流量を制御可能な変位部材(42)と、前記変位部材(42)の変位を操作する流量調節表示機構(12、12A~12F)とを備える流量制御装置(10)であって、
前記流量調節表示機構(12、12A~12F)は、本体部(16)と、
前記本体部(16)に対し回転自在に設けられるとともに、前記変位部材(42)に接続され、回転操作により前記変位部材(42)を変位させる変位操作部(110)と、
前記変位操作部(110)を挿通する孔部(172)を有する円環状に形成され、且つ前記変位操作部(110)の挿通位置に対し回転中心がずれて前記本体部(16)に配設される回転部(114)とを備え、
前記変位操作部(110)は、回転中に前記回転部(114)に直接係合する係合部(122、122A)を備え、
前記回転部(114)は、周方向に沿って前記流体の流量変化が表示された表示部(174)を有し、前記係合部(122、122A)の係合により周方向に変位して前記表示部(174)の位置が変更される
ことを特徴とする流量制御装置(10)。 - 請求項1記載の流量制御装置(10)において、
前記孔部(172)を構成する前記回転部(114)の内周面には、周方向に沿って複数の内接歯部(176、176A)が形成され、
前記変位操作部(110)の外周面には、前記係合部(122、122A)として前記内接歯部(176、176A)に噛み合う噛合部(122、122A)と、前記内接歯部(176、176A)に噛み合わない空転部(178)とが周方向に沿って並設されている
ことを特徴とする流量制御装置(10)。 - 請求項2記載の流量制御装置(10)において、
前記本体部(16)には、前記変位操作部(110)の前記空転部(178)が前記内接歯部(176、176A)に対向した状態で、前記回転部(114)の回転を規制可能な回転規制機構(162、162A~162E)が設けられる
ことを特徴とする流量制御装置(10)。 - 請求項3記載の流量制御装置(10)において、
前記回転規制機構(162、162A~162E)は、前記本体部(16)内に連設され、前記内接歯部(176、176A)に当接して前記回転部(114)を弾性的に押さえる弾性規制部(162、162A~162E)である
ことを特徴とする流量制御装置(10)。 - 請求項4記載の流量制御装置(10)において、
前記弾性規制部(162A~162E)は、前記内接歯部(176、176A)の内側に形成された凹部(176a)又は前記複数の内接歯部(176、176A)の間に進入可能な凸部(170)を有する
ことを特徴とする流量制御装置(10)。 - 請求項4記載の流量制御装置(10)において、
前記弾性規制部(162、162A~162E)は、前記変位操作部(110)の配設位置に対し前記回転部(114)の回転中心を挟んだ反対側の前記回転部(114)を弾性的に押さえる
ことを特徴とする流量制御装置(10)。 - 請求項1記載の流量制御装置(10)において、
前記流量調節表示機構(12、12A~12F)は、前記ハウジング(26)に対し着脱可能なユニットとして構成される
ことを特徴とする流量制御装置(10)。 - 請求項7記載の流量制御装置(10)において、
前記本体部(16)は、前記ハウジング(26)を部分的に挿入可能な挿入孔(150)を有し、
前記ハウジング(26)が前記挿入孔(150)に挿入された状態で、前記ハウジング(26)と前記本体部(16)の接続を保持するクリップ(156)が装着される
ことを特徴とする流量制御装置(10)。
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US14/402,429 US9523444B2 (en) | 2012-06-14 | 2013-04-10 | Flow rate control device |
JP2014520986A JP6179510B2 (ja) | 2012-06-14 | 2013-04-10 | 流量制御装置 |
RU2014150667/06A RU2599455C2 (ru) | 2012-06-14 | 2013-04-10 | Устройство регулирования расхода |
CN201380031325.XA CN104379979B (zh) | 2012-06-14 | 2013-04-10 | 流量控制装置 |
EP13803685.0A EP2863096B1 (en) | 2012-06-14 | 2013-04-10 | Flow rate control device |
KR1020147035203A KR101626092B1 (ko) | 2012-06-14 | 2013-04-10 | 유량제어장치 |
BR112014031343-1A BR112014031343B1 (pt) | 2012-06-14 | 2013-04-10 | Dispositivo de controle de taxa de fluxo |
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JP2012135013 | 2012-06-14 | ||
JP2012-135013 | 2012-06-14 |
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US (1) | US9523444B2 (ja) |
EP (1) | EP2863096B1 (ja) |
JP (1) | JP6179510B2 (ja) |
KR (1) | KR101626092B1 (ja) |
CN (1) | CN104379979B (ja) |
BR (1) | BR112014031343B1 (ja) |
RU (1) | RU2599455C2 (ja) |
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JP6673547B2 (ja) * | 2016-04-27 | 2020-03-25 | Smc株式会社 | 流体制御弁 |
TWI612247B (zh) * | 2017-01-24 | 2018-01-21 | Huang Guo Hong | 流體控制閥 |
CN108343758B (zh) * | 2017-01-24 | 2019-06-14 | 黄国洪 | 流体控制阀 |
MX2018002294A (es) | 2017-02-28 | 2018-11-09 | Culligan Int Co | Montaje de valvula de control para aparato de tratamiento de fluidos. |
JP6511091B2 (ja) * | 2017-06-09 | 2019-05-15 | 株式会社日本ピスコ | 流量制御弁 |
DE112018004511T5 (de) | 2017-10-13 | 2020-06-10 | Smc Corporation | Druckfluidabgabesteuervorrichtung |
JP6914476B2 (ja) * | 2018-02-14 | 2021-08-04 | Smc株式会社 | バルブ |
CN108506567B (zh) * | 2018-03-07 | 2019-07-19 | 上海安巢在线控制技术股份有限公司 | 一种流量控制装置 |
CN112334639B (zh) * | 2018-07-05 | 2022-08-05 | 日立安斯泰莫株式会社 | 控制阀、流量控制阀以及两部件的连接构造 |
US11964290B2 (en) | 2018-09-12 | 2024-04-23 | Smc Corporation | Compressed-fluid discharge control device |
KR101986232B1 (ko) * | 2018-11-07 | 2019-06-05 | (주)씨디씨뉴매틱 | 니들밸브의 유량제어장치 |
JP2020083175A (ja) * | 2018-11-29 | 2020-06-04 | トヨタ紡織株式会社 | 手動バルブ装置 |
JP7409591B2 (ja) | 2020-07-30 | 2024-01-09 | Smc株式会社 | 流量制御弁 |
JP2022162281A (ja) | 2021-04-12 | 2022-10-24 | Smc株式会社 | 流量制御弁 |
KR102660515B1 (ko) * | 2023-04-20 | 2024-04-25 | (주)씨디씨뉴매틱 | 개선된 니들밸브의 유량제어장치 |
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- 2013-04-10 RU RU2014150667/06A patent/RU2599455C2/ru active
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EP2863096A1 (en) | 2015-04-22 |
JP6179510B2 (ja) | 2017-08-16 |
US9523444B2 (en) | 2016-12-20 |
US20150107704A1 (en) | 2015-04-23 |
TW201407071A (zh) | 2014-02-16 |
BR112014031343A2 (pt) | 2017-06-27 |
WO2013187113A1 (ja) | 2013-12-19 |
CN104379979A (zh) | 2015-02-25 |
EP2863096B1 (en) | 2019-09-11 |
JPWO2013187113A1 (ja) | 2016-02-04 |
RU2014150667A (ru) | 2016-07-10 |
KR20150010990A (ko) | 2015-01-29 |
EP2863096A4 (en) | 2016-02-24 |
CN104379979B (zh) | 2017-01-18 |
BR112014031343B1 (pt) | 2021-10-05 |
RU2599455C2 (ru) | 2016-10-10 |
KR101626092B1 (ko) | 2016-05-31 |
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