JP4634251B2 - Indicator and gas fluid supply device - Google Patents

Description

  The present invention relates to an indicator that indicates whether or not a fluid is flowing, and a gas fluid supply device that is a combination of the indicator and a gas fluid supply means.

  As a device configured to allow humans to visually measure the flow rate of a fluid, for example, a gas fluid, a transparent tube (a glass tube or a glass tube or the like having a tapered inside and a scale corresponding to the flow rate on the outer peripheral surface is formed. There is a flow meter having a synthetic resin tube) and a float that is disposed inside the tube and has a mass corresponding to the gas fluid to be measured and has a circular cross section that rises and falls according to the flow rate of the gas fluid. In this flow meter, it is possible to measure the flow rate by installing a pipe vertically, supplying a gas fluid set at a certain pressure in advance to the lower end of the pipe, and visually observing the scale of the rising position of the float It is.

  In the medical field, there is a case where treatment for causing a patient to suck medical oxygen is performed, and in this case, it is necessary to strictly control the flow rate of oxygen gas to be supplied. For this reason, a medical oxygen inhaler has a function of adjusting the flow rate of oxygen gas. For example, as an oxygen inhaler, a tank holding water, a supply pipe connected to a pressure regulator attached to an oxygen cylinder or an indoor oxygen pipe, and opened at a position close to the bottom of the tank, and provided at the top of the tank There is an oxygen gas passage having a needle valve, a flow meter, and a supply port for a patient.

  In the oxygen inhaler, the primary pressure of the oxygen cylinder or oxygen pipe is reduced to a predetermined pressure (set pressure in the flow meter) by a pressure regulator, and the needle valve is opened so that the oxygen gas is supplied to the pressure regulator. It is released in water through the supply pipe, floats as a bubble, fills the tank, and is supplied from the needle valve through the flow meter to the patient through the supply port. At this time, the flow rate of oxygen gas is adjusted by the opening degree of the needle valve. In addition, the flow of oxygen gas is visually recognized by bubbles in the water and floating floats in the flow meter. In this oxygen inhaler, the flow meter is generally provided so as to protrude from the upper end portion of the cap so that the flow rate of oxygen gas can be easily seen.

  On the other hand, a flow rate adjusting device described in Patent Document 1 has been proposed as an instrument that can ensure an accurate flow rate of oxygen gas. This flow control device has a mechanism for reducing the primary pressure, and has a supply hole for supplying a gas fluid at the reduced pressure and a selector provided with a plurality of orifices having different diameters facing the supply hole. Configured. Then, by rotating the selector so that the selected orifice faces the supply hole, it is possible to supply a gas fluid having an accurate flow rate corresponding to the selected orifice.

JP-A-1-168330

  In the flow meter, since the flow rate is measured as a value corresponding to the area of the gap between the float and the tapered inner surface of the tube, there is a problem that an accurate flow rate cannot be measured when the tube is tilted. That is, in the above oxygen inhaler, it is necessary to install the pipe of the flow meter accurately and vertically in order to accurately control the flow rate of oxygen gas, but it is difficult to install in this way from a practical viewpoint. Therefore, there is a problem that the measured flow rate is only a guide. In addition, the flow meter measures the flow rate of the fluid, and it is necessary to take a wide range for measurement. Therefore, there is a problem that the flow meter is inevitably long and large.

  Moreover, in the flow volume adjustment apparatus of patent document 1, when performing the treatment which draws in medical oxygen to a patient, an exact flow volume can be set. However, when oxygen gas is directly supplied to the patient from the flow control device, there is a problem that it cannot be visually confirmed whether or not oxygen gas is actually flowing.

  For this reason, it is required to develop an indicator that can visually recognize whether oxygen gas is circulated and has a simple structure and a compact structure.

  An object of the present invention is to provide an indicator capable of visually checking whether or not a fluid is circulating with a simple structure, and a gas fluid supply device using the indicator.

  In order to solve the above-mentioned problems, an indicator according to the present invention is an indicator that indicates whether or not a fluid supplied from a fluid supply means is flowing, and is transparent with an inside formed in a tapered shape. An indicator member for instructing the flow of a fluid comprising a tube and a float having a circular cross section disposed inside the tube; a holding portion for holding the indicator member; and an end portion having a large inner diameter of the indicator member in the same direction A main body having a mounting portion that is detachably mounted on a fluid supply means provided at an end portion and an attachment portion that attaches a supply means to be supplied with a fluid provided at an end portion on the opposite side of the direction. The main body is provided with a fluid flow path from the mounting portion provided on the main body to the end portion with the small inner diameter of the indicating member and from the end portion with the large inner diameter of the indicating member to the mounting portion provided on the main body. It is what.

  In the above indicator, the main body is configured by vertically connecting a pair of main body members formed in the same shape, and each main body member is fitted with an indicator member for fitting one end of the indicating member. A pair of flow paths provided symmetrically with respect to a line passing through the center of the indicating member fitting portion, and a continuous flow of one of the pair of flow paths and the indicating member fitting portion. A passage, an opening serving as a mounting part or an attachment part connected to the other of the pair of flow paths, and a line passing through the center of the indicating member fitting part and symmetrical to the line of the pair of flow paths A pair of holes provided on a line parallel to a line connecting the centers, a female screw formed in one of the pair of holes, and a screw hole through which a screw formed in the other of the pair of holes is passed. It is preferable to have it.

  In the gas fluid supply device according to the present invention, the fluid supply means includes a selector provided with a plurality of orifices having different diameters, a handle for rotating the selector, and a fluid supply unit. It is configured so that the gas fluid can be supplied from the supply unit at a predetermined pressure by operating and selecting the orifice of the selector, and the indicator mounting portion according to claim 1 or 2 is provided in the supply unit. And is configured to indicate whether or not a gas fluid is supplied from the fluid supply means.

  In the above-described indicator of the present invention, the end of the pipe whose inside is tapered is formed such that the end with the large inner diameter is upward (hereinafter, this direction is referred to as “upper” or “upper side”) and the end with the smaller inner diameter Is held in the main body so that it is in a substantially vertical direction with the section down (hereinafter referred to as “lower” or “lower side”), and the mounting portion provided on the upper part of the main body serves as a fluid supply means. The indicator member can be installed in a substantially vertical direction by attaching the supply means to the attachment portion provided at the lower portion. When the fluid is supplied in this state, the fluid supplied from the mounting portion passes through the flow path provided inside the main body and is supplied from the lower portion to the upper portion of the indicating member to the supply means from the mounting portion. In the process in which the fluid flows through the indicator member, the float rises and it can be indicated that the fluid is flowing.

  Since the indicator member does not measure the flow rate, the taper angle may be large, and it is not necessary to strictly set the gap between the float and the inner surface of the pipe, and it is not necessary to provide a scale. Furthermore, the length of the indicator member tube may be short and compact. Further, since the indicating member does not measure the flow rate, it is not necessary to install the indicating member accurately in the vertical direction, and the degree of freedom of the installation posture is improved and the handling becomes easy.

  In particular, since the main body is configured by connecting a pair of main body members formed in the same shape, the parts constituting the indicator of the present invention may be a pair of main body members and an indicating member. It becomes extremely simple.

  Further, the gas fluid supply device according to the present invention uses any one of the above-described indicators, and rotates the indicator with a handle provided with a plurality of orifices having different diameters, thereby supplying the supply unit. Since it is attached to a supply means configured to be able to supply a gas at a predetermined flow rate from, the gas flow rate can be guaranteed by the supply means, and whether or not the gas is circulating is visually confirmed by an indicator. be able to.

  Hereinafter, preferred embodiments of an indicator and a gas fluid supply device according to the present invention will be described. The indicator of the present invention makes it easy for a person around to see whether or not a fluid is actually flowing through the target system. Therefore, it is not intended to measure the flow rate of the flowing fluid, and a mechanism for setting the flow rate needs to be provided separately.

  In the present invention, the fluid that can be indicated by the indicator may be either liquid or gas, and it is preferable to set the size and mass of the float according to the specifications such as the mass of the target fluid. Also, the flow rate of the fluid that can be indicated is not limited, and it is preferable to set the maximum inner diameter of the tube and the diameter of the float so as to satisfy the maximum flow rate in the target system.

  The pipe of the indicator member that constitutes the indicator does not measure the flow rate, so that the lower end part diameter (inlet diameter) and the upper end part diameter (outlet diameter) satisfy the set flow rate. What is necessary is just a value to obtain, and it is not necessary to limit the distance (taper angle) between upper and lower ends. Therefore, it is preferable to make the length of the tube as short as possible. By using such a short tube, it is possible to realize a compact indicator.

  The indicator of the present invention includes an indicator member that instructs the flow of fluid and a main body that holds the indicator member. The indicating member is connected to a flow path formed in the main body by holding the upper and lower end portions thereof on the main body. For this reason, the main body has a function of holding the indicating member, a function of configuring the flow path, a function of being attached to the supply means for supplying the fluid, and a function of attaching the supplied means of the fluid. It is preferable to realize these plural functions with a simple structure.

  For this reason, in the indicator of the present invention, the main body is configured to be connected to each other in a state where two main body members having the same shape are rotated. As a result, the number of parts can be reduced, and downsizing can be realized with a simple structure.

  The gas fluid supply device of the present invention is configured by combining a gas fluid flow rate adjusting device and an indicator, and in particular, the flow rate adjusting device rotates a selector provided with a plurality of orifices having different diameters by a handle. Thus, the orifice is selected, whereby the gas fluid can be supplied at a predetermined pressure and a flow rate corresponding to the orifice. For this reason, when adjusting the flow rate, it is not necessary to operate while monitoring a flow rate measuring member such as a flow meter, for example, and it is only necessary to select an orifice. Therefore, a reliable flow rate can be ensured by a simple operation.

  There is no limitation as to what gas supply means the gas fluid flow control device of the present invention is used in, and medical oxygen gas and other gases can be used as targets. For this reason, the mounting structure on the primary side of the flow rate adjusting device can be configured so that it can be directly mounted on a gas cylinder filled with the target gas, or configured so that it can be connected to indoor piping. Is possible. Furthermore, in the case of configuring for medical use, it is also possible to configure so that it can be directly attached to a concentrated outlet (outlet) provided for each hospital room.

  A preferred embodiment of the indicator will be described below with reference to the drawings. FIG. 1 is a front view and a side sectional view for explaining the configuration of the indicator. FIG. 2 is a diagram illustrating the configuration of the main body member.

  The indicator A shown in FIG. 1 is configured for medical oxygen as a fluid, and is attached to an oxygen supply means (an oxygen flow rate adjusting device B described later), and oxygen is supplied from the supply means to flow. An indicating member 10 for instructing whether or not it is attached, a mounting portion 20 that holds the indicating member 10 and is attached to the supplying means, and a mounting portion 30 that attaches the supplied means to the lower portion. It is comprised with the main body 50 which provided the flow path 40 which distribute | circulates.

  The indicator member 10 is a member for allowing a person in the vicinity to visually check whether oxygen is flowing through the indicator A. The indicator member 10 is arranged inside the tube 11 with a transparent tube 11 having a tapered shape inside. The float 12 is formed. The indicating member 10 is held by a main body 50, and is configured to be able to hold a substantially vertical posture when the main body 50 is attached to the flow rate adjusting device B.

  The taper angle formed on the inner surface 11a of the pipe 11 is 10.88 degrees (taper 5.44 degrees), and the taper angle of the inner surface of the pipe constituting the flow meter for measuring the flow rate of the fluid is It has a sufficiently large angle compared to 0.5 degree (taper 0.25 degree). And by taking a taper angle large in this way, the length of the pipe | tube 11 is fully shortened compared with the length of the pipe | tube which comprises a flow meter. The tube 11 is held in a state in which both upper and lower ends are fitted in holding portions provided in the main body 50, and the axis 11 b is set so as to be parallel to the longitudinal reference line 51 set in the main body 50. Yes.

  Further, the float 12 is formed in a spherical shape, and is configured so that when oxygen is supplied to the indicating member 10, the inside of the pipe 11 can be floated by the oxygen. The float 12 preferably has a shape or color that is easily visible from the outside of the tube 11. For this reason, in this embodiment, the float 12 is constituted by a red sphere.

  A stopper 13 is disposed at the upper end portion of the pipe 11, and the rising limit of the float 12 is set by the stopper 13. In addition, O-rings 14 are disposed at the upper and lower ends of the tube 11, respectively, so that oxygen can be prevented from leaking from between the indicating member 10 and the main body 50.

  The mounting portion 20 is disposed at the upper portion of the indicator A, is screwed and fixed to a predetermined position on the upper portion of the main body 50, and has a function of being detachably mounted to the oxygen supply means. For this reason, the mounting portion 20 is configured to have a structure that is paired with the structure of the supply portion in the oxygen supply means.

  In the present embodiment, the oxygen supply means is a flow rate regulator B, which will be described later, and the supply portion of the flow rate regulator B is constituted by a member having a tapered surface inside and an external thread on the outside surface. 20 includes a terminal 21 having a tapered surface 21 a at a tip portion and a screw portion 21 b that is screwed into a main body 50 at the other end portion, and a cap nut 22.

  An O-ring 23 is attached to the tapered surface 21a of the terminal 21 and the tip of the screw portion 21b. When the indicator A is attached to the flow rate regulator B, oxygen is prevented from leaking from the attachment portion 20. It is configured to be able to.

  The attachment portion 30 is disposed at the lower portion of the indicator A, is screwed and fixed to a predetermined position on the lower portion of the main body 50, and has a function of attaching a supply means for supplying oxygen that has passed through the indicator A. . The supply means is not particularly limited in structure, and includes a cannula and a mask for a patient to suck oxygen. For example, when the supplied means is a cannula (not shown), a hose or tube is connected to the cannula and is extended, and the mounting portion 30 has a function of detachably mounting the hose or tube.

  In the present embodiment, the attachment portion 30 is constituted by a hose plug 31. The hose insert 31 is formed on one side as an insertion portion 31a formed in a shape in which a plurality of tapered portions are arranged in series, and a screw portion 31b that is screwed into the main body 50 is formed on the other end side.

  An O-ring 32 is attached to the tip of the screw part 31b of the hose plug 31 so that oxygen can be prevented from leaking from between the attachment part 30 and the main body 50.

  The flow path 40 is configured to have a path for oxygen supplied via the mounting portion 20 to reach the attachment portion 30 via the indicating member 10. The flow path 40 is connected to the terminal 21 of the mounting portion 20 provided at the upper part of the main body 50 with the indicating member 10 as a reference, and is connected to the axial center 11b of the pipe 11 constituting the indicating member 10 in the upstream longitudinal direction. A flow path 41, an upstream horizontal flow path 42 connecting the upstream vertical flow path 41 and the lower end side of the pipe 11, a downstream horizontal flow path 43 formed laterally from the upper end of the pipe 11, and a lower part of the main body 50 And a downstream longitudinal flow path 44 connected to the downstream lateral flow path 43 in the upper direction parallel to the axial center 11b of the pipe 11 and connected to the hose plug 31 of the mounting portion 30 provided in .

  The main body 50 holds the indicating member 10, the mounting portion 20 is provided at the upper portion, the attachment portion 30 is provided at the lower portion, and the flow path 40 is further formed therein to constitute the indicator A. In the indicator A configured in this way, oxygen supplied from the mounting portion 20 reaches the indicator member 10 through the upstream longitudinal channel 41 and the upstream lateral channel 42 and passes through the indicator member 10. Float 12 on the surface. Thereafter, oxygen reaches the attachment portion 30 from the upper end portion of the indicating member 10 via the downstream lateral flow path 43 and the downstream vertical flow path 44, and is sucked into the patient via the hose connected to the hose plug 31.

  Next, a specific structure of the main body 50 will be described with reference to FIG. In the figure, the same parts and parts having the same functions as those of the above-described embodiment are designated by the same reference numerals and the description thereof is omitted.

  In this embodiment, the main body 50 is formed by cutting a line at a center in the longitudinal direction and perpendicular to the reference line 51 to form a pair of main body members 52, and connecting the main body members 52 to each other. Has been. That is, a pair of main body members 52 having the same shape are formed, and the main body 50 is configured by rotating the main body members 52 and coupling them together. Therefore, the main body 50 is configured to be point-symmetric about the reference line 51 and centered in the longitudinal direction.

  As shown in FIG. 2, the main body member 52 has a reference surface 53 that is a surface cut on the reference line 51 of the main body 50 and at the center in the longitudinal direction. 41, a hole serving as a downstream longitudinal channel 44 is opened. Then, when the pair of main body members 52 are fastened with the reference surface 53 facing each other and holding the indicating member 10, the holes connected to the small diameter side of the tube 11 constituting the holding member 10 are formed in the upstream longitudinal flow channel 41, A hole connected to the large-diameter side of the tube 11 as the upstream side flow path 42 functions as a downstream side flow path 43 and a downstream side vertical flow path 44.

  On the front surface 52a side of the main body member 52, a fitting hole 54 for fitting the pipe 11 of the indicating member 10 is formed. The fitting hole 54 is wide enough that the fitted tube 11 is not easily detached and the front surface of the tube 11 can be easily visually recognized as the floating state of the float 12 disposed inside. It is configured as follows.

  Furthermore, a screw portion 55 is formed on the surface of the main body member 52 opposite to the reference surface 53 to screw the terminal 21 of the mounting portion 20 or the hose insert 31 of the attachment portion 30. Then, the pair of main body members 52 are opposed to each other with the reference surface 53 facing each front 52a in the same direction, and the indicating member 10 is fitted in the fitting holes 54 provided in each main body member 52. When the main body members 52 are brought close to each other, the longitudinal channels 41 and 44 formed on the reference surfaces 53 face each other, and the ring-shaped protrusions 57 c of the holes 57 face the ring-shaped grooves 56 c of the holes 56. Further, when the pair of main body members 52 are brought close to each other, the ring-shaped protrusions 57c are fitted into the ring-shaped grooves 56c, and the opposing main body members 52 are positioned.

  In the above-described state, the screw 58 is inserted into the hole 57 of each main body member 52 and fastened to the screw 57b of the opposite hole 57, whereby the pair of main body members 52 are firmly coupled. The tube 11 is also held in the fitting hole 54.

  When the pair of main body members 52 are joined, O-rings 59 are attached to the joining portions of the longitudinal flow paths 41 and 44 formed on the reference surface 53, thereby preventing oxygen leakage. Is possible.

  As described above, in this embodiment, a simple structure can be realized by combining the main body 50 with a pair of main body members 52 having the same shape. Easy.

  Next, the configuration of the gas fluid supply device will be described with reference to FIG. In the present embodiment, the gas fluid supply device (supply device) is configured so that when oxygen is supplied to a patient, it can be easily confirmed whether or not oxygen is flowing. The indicator A described above is attached to the flow rate regulator B serving as the supply means.

  The flow rate regulator B shown in the figure is configured to be attachable and detachable with one touch to the outlet oxygen supply port that constitutes the terminal of the indoor piping provided in the hospital. However, in the present invention, the fluid supply means is not limited to be configured to be attached to the outlet, but is configured to be attached to a normal oxygen cylinder or a valve of an indoor pipe. Of course, it may be.

  The flow rate regulator B includes a pressure reducing mechanism 62 inside a casing 61, a selector 64 in which a plurality of orifices having different diameters are formed in a secondary pressure chamber 63 of the pressure reducing mechanism 62, and a handle 65. It is attached integrally. Further, a supply hole 66 is formed at a predetermined position of the casing 61, and the supply hole 66 is connected to a supply part 67 to which the indicator A is attached. An attachment 68 attached to an outlet (not shown) is provided on the casing 61 on the pressure reducing mechanism 62 side.

  The flow rate regulator B is configured such that when the attachment 68 is attached to the outlet, the supply unit 67 faces directly below. By attaching the indicator A to the supply unit 67, the flow rate regulator B is arranged in the indicator A. The indicating member 10 is installed in a substantially vertical direction.

  The pressure reducing mechanism 62 of the flow rate regulator B has a structure substantially similar to that of a normal pressure regulator. Therefore, when oxygen is supplied through the attachment 68, the supplied oxygen is depressurized by passing through the nozzle 62a and the sheet 62b, and is supplied to the secondary pressure chamber 63 through a hole formed in the piston 62c. Is done.

  A selector 64 is disposed in the secondary pressure chamber 63, and a supply hole 66 is provided on the opposite side of the selector 64 from the secondary pressure chamber 63. Therefore, the flow rate of oxygen that can be supplied from the supply unit 67 can be set by operating the handle 65 and rotating the selector 64 so that the orifice having a desired diameter faces the supply hole 66.

  In particular, in this flow regulator B, it is possible to make the secondary pressure constant regardless of the primary pressure of oxygen supplied to the outlet. In this way, it is possible to guarantee a stable secondary pressure, and thus it is possible to guarantee an accurate flow rate according to the diameter of the orifice.

  As described above, the flow rate regulator B has a function of adjusting the flow rate of oxygen, but does not have a function of confirming whether or not oxygen is flowing. For this reason, it is possible to supply oxygen to a patient using only the flow regulator B, but it is impossible to visually recognize whether oxygen is actually being supplied.

  The supply portion 67 is formed by forming a tapered portion 67a on the inner surface and a threaded portion 67b on the outer periphery. The tapered portion 21a of the terminal 21 constituting the mounting portion 20 of the indicator A is changed to the tapered portion 67a. By abutting and fastening the cap nut 22 to the threaded portion 67b, the indicator A can be integrated with the flow rate regulator B to constitute a gas fluid supply device.

  In the gas fluid supply apparatus configured as described above, after the flow rate regulator B is mounted on the outlet, the handle 65 is operated to select the orifice provided in the selector 64 and to oppose the supply hole 66. Next, the valve mechanism provided at the outlet is opened, so that oxygen that has been previously reduced to a predetermined pressure is supplied to the flow rate regulator B.

  The oxygen supplied to the flow rate regulator B is reduced to a predetermined secondary pressure by the pressure reducing mechanism 62 and supplied from the supply unit 67 to the indicator A at a flow rate defined by the diameter of the orifice. The oxygen supplied to the indicator A circulates to the lower end side of the indicating member 10 through the upstream longitudinal channel 41 and the upstream lateral channel 42.

  When oxygen is supplied to the lower end of the tube 11 constituting the indicating member 10, the float 12 floats according to the flow rate of the oxygen, and oxygen flows through a gap formed between the float 12 and the inner surface 11 a of the tube 11. . At this time, it is possible to confirm that oxygen is flowing by the rising of the float 12. Further, oxygen flows from the upper end portion of the indicating member 10 to the downstream lateral flow path 43.

  Further, the oxygen that has passed through the indicating member 10 flows through the downstream lateral flow path 43 and the downstream longitudinal flow path 44 to the attachment portion 30, and through a hose attached to the hose plug 31 that constitutes the attachment portion 30. Supplied to the cannula or mask.

  Since the indicator A of the present invention can visually recognize only whether or not a fluid is flowing, it can be configured compactly and is advantageous for confirming the flow of liquid or gas. Further, the gas fluid supply device of the present invention selects a plurality of orifices having different diameters to adjust the flow rate of the gas fluid, so that an accurate flow rate is ensured and whether or not the gas is flowing is visually confirmed. Therefore, it is advantageous as a supply device for medical oxygen or experimental gas that requires a precise flow rate.

It is the front view and side sectional drawing explaining the structure of an indicator. It is a figure explaining the structure of a main-body member. It is a figure explaining the structure of the supply apparatus of gas fluid.

Explanation of symbols

A indicator B flow control device 10 indicator member 11 pipe 11a inner surface 11b shaft center 12 float 13 stopper 14 O-ring 20 mounting part 21 terminal 21a taper surface 21b screw part 22 cap nut 23 O-ring 30 attachment part 31 hose insertion 31a insertion part 31b Threaded portion 32 O-ring 40 Flow channel 41 Upstream vertical flow channel 42 Upstream horizontal flow channel 43 Downstream horizontal flow channel 44 Downstream vertical flow channel 50 Main body 51 Reference line 52 Main body member 53 Reference surface 52a Front surface 54 Fitting hole 55 Screw Portions 56 and 57 Holes 56a and 57a Counterbore portion 56b Screw portion 56c Groove 57b Screw hole 57c Projection 58 Screw 59 O-ring 61 Casing 62 Pressure reducing mechanism 62a Nozzle 62b Seat 62c Piston 63 Secondary pressure chamber 64 Selector 65 Handle 66 Supply hole 67 Supply Part 67a Over path portion 67b threaded portion 68 attachment

Claims (3)

An indicator for indicating whether or not a fluid supplied from a fluid supply means is circulated, and a transparent tube having a tapered shape inside and a floating section having a circular cross section disposed inside the tube. An indicator member for instructing the flow of fluid comprising: a holding portion for holding the indicator member; and a fluid supply means provided at an end portion in the same direction as the end portion having the large inner diameter of the indicator member. A main body having a mounting portion to be mounted and a mounting portion to which a supply means to supply fluid to be supplied provided at an end portion on the opposite side of the direction is provided, and the main body includes a mounting portion provided on the main body. An indicator having a fluid flow path extending from an end of the indicating member having a small inner diameter to an attaching portion provided on the main body. The main body is configured by connecting a pair of main body members formed in the same shape, and each main body member has an indication member fitting portion that fits one end of the indication member, and the indication member fitting A pair of flow paths provided at positions symmetrical to a line passing through the center of the section, a communication path for continuing one of the pair of flow paths and the indicating member fitting portion, and a pair of flow paths An opening serving as a mounting part or an attachment part connected to the other flow path, and a line parallel to a line connecting the centers of the pair of flow paths symmetrical to a line passing through the center of the pointing member fitting part It has a pair of holes provided, a female screw formed in one of the pair of holes, and a screw hole through which a screw formed in the other of the pair of holes is passed. The indicator according to claim 1. The fluid supply means includes a selector provided with a plurality of orifices having different diameters, a handle for rotating the selector, and a fluid supply unit, and the selector is selected by operating the handle. A gas fluid is configured to be supplied from a supply unit at a predetermined pressure, and the indicator mounting unit according to claim 1 or 2 is attached to the supply unit, and gas is supplied from the fluid supply means. A gas fluid supply apparatus configured to indicate whether or not a fluid is supplied.

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