JP2009174574A - Flow regulation valve and connection fitting using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an economical flow regulation valve easy to machine and capable of preventing fluctuation of regulation conditions and capable of reducing failure, and to provide a connection fitting using the same. <P>SOLUTION: This connection fitting 1 has a socket 3 and a plug 5 to be detachably attached to the socket 3. An adapter 11 is movably connected to an intermediate main body 10 of the socket 3 by screw engagement. A flow regulation valve 34 is installed in an intermediate flow path 31. The flow regulation valve 34 comprises a central flow path member 35 formed with a central fine hole 38 having a hole diameter easy to be machined, an eccentric flow path member 36 formed with an eccentric fine hole 39 in an eccentric position, and a ring-like spacer seat 37 thinner than the diameter dimension of the fine hole. The valve is assembled by installing the spacer seat 37 between the central flow path member 35 and the eccentric flow path member 36. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a flow rate adjusting valve for adjusting a flow rate of a fluid and a quick fitting type connection joint using the same.

Quick fitting type joints are widely used in which a plug is inserted into a socket to lock the socket and the plug, and at the same time the fluid is opened to allow fluid to flow. Is known in which a flow rate adjusting valve (valve device) is provided (see, for example, Patent Document 1). However, the conventional flow rate adjusting valve has a complicated structure, is difficult to manufacture, cannot be obtained economically, and is liable to fail. Further, when this valve is assembled in the flow path of the connection joint, the flow rate adjustment is troublesome, and the flow rate often fluctuates due to vibration, impact, etc. after the flow rate adjustment. For example, when supplying a small amount of oxygen through a mouse to a user who has become tired at a sports center, training gym, fitness club, etc., connect a socket connected to the oxygen piping system and a plug connected to the hose leading to the mouse. If you try to adjust the flow rate with the flow rate adjustment valve installed in, the adjustment valve will fluctuate due to vibrations and shocks transmitted from the hose to the joint, etc. There was a risk of it. On the other hand, a method of adjusting a flow rate by forming a small hole and passing a fluid through the small hole is also known as a flow rate adjusting valve. However, as described above, when a fluid such as oxygen is supplied at a constant pressure, for example, about 0.45 Mpa to 0.5 Mpa and a flow rate of about 120 L / h, it is necessary to form the hole diameter to 0.1 mm or less, for example. However, the formation of such ultra-fine holes exceeds the limit of manufacturing accuracy and is difficult to machine.
Japanese Patent Laid-Open No. 47-40422 (FIG. 2)

  The problem to be solved by the present invention is to provide a flow rate adjusting valve that can be machined easily and economically, can prevent fluctuations in the adjustment state, and has few failures, and a connecting joint using this valve. Another object of the present invention is to provide an oxygen replenishing device that can supply a small amount of oxygen, has a small flow rate fluctuation, and can be suitably used in a fitness club or the like.

  According to the present invention, a plurality of flow path members in which micro holes with a hole diameter that can be easily machined are formed in the flow path are provided, and a ring shape thinner than the diameter of the micro holes of the flow path member is provided between the flow path members. The spacer sheet is sandwiched and a flow rate adjusting valve is provided, which solves the above problem.

  Further, according to the present invention, the flow path member corresponds to the center flow path member in which the fine hole is formed at the approximate center of the flow path member and the ring of the spacer sheet, and is located at a position eccentric from the center. It is composed of an eccentric flow channel member in which a fine hole is formed, each fine hole of the central flow channel member and the eccentric flow channel member opens into the ring of the spacer sheet, and the diameter of the fine hole is preferably 0.3. The flow rate adjusting valve is provided in which the thickness of the spacer sheet is preferably 0.02 to 0.05 mm, and the above-described problems are solved. Furthermore, according to the present invention, there is provided a connection joint having a socket and a plug that are detachably connected and provided with a spindle so as to open and close the flow path by attaching and detaching the plug in the socket. A connection joint provided with the flow rate adjusting valve is provided, and the flow rate adjusting valve is sandwiched between a step portion provided in the socket and an adapter, and the socket of these connection joints is connected to the oxygen supply source side to connect the mouse. An oxygen replenishing device in which a connecting hose is connected to the plug is provided, and the above-described problems are solved.

  The present invention is configured as described above, and a plurality of flow path members are formed by forming micro holes with a hole diameter that is easy to machine in the flow path, and the diameter of the micro holes of the flow path member is provided between the flow path members. Since a ring-shaped spacer sheet thinner than the size is sandwiched, it is not necessary to form extremely difficult ultra-fine holes by machining, etc. It is possible to supply oxygen. In addition, since the flow path member and the spacer sheet are sandwiched, if this clamping force is adjusted, the flow rate can be easily adjusted in a small amount and a small amount can be supplied in a stable state. A flow control valve that is prevented and has few failures is obtained.

  In addition, if the socket and the plug are detachably connected and the flow rate adjusting valve is provided in the socket, the flow rate can be easily adjusted with a simple configuration and the fluctuation of the adjusted state can be prevented. A connection joint with few failures can be obtained, and if the above-mentioned connection joint is used for an oxygen supply device, a small amount of oxygen can be supplied, there is little fluctuation in flow rate, and an oxygen supply device that can be suitably used in a fitness club or the like is provided .

  Although the flow regulating valve of the present invention can be applied to various devices, FIG. 1 shows an embodiment applied to a connection joint for supplying oxygen. The connection joint 1 includes a socket 3 having an inlet 2 and a plug 5 detachably connected to the socket 3 and having an outlet 4. The plug 5 has a hose connection portion 7 on one end side of the flange 6 and a locking groove 8 on the other end side.

  The socket 3 includes a three-way hole body 9, an intermediate body 10 screwed to the three-way hole body 9, an adapter 11 connected to the intermediate body 10 so as to be movable in the longitudinal direction by screw engagement, and a screw to the adapter 11. An inlet member 13 is mainly provided which is fastened to the tip of the adapter 11 via a lock member 12 to be attached. A locking ball 15 is fitted to the three-way hole body 9 so that a part of the locking ball 15 protrudes inward from a hole 14 formed in the three-way hole body 9, and the locking ball 15 is retracted on the outer periphery. A detachable guide ring 18 having a large-diameter hole portion 16 to be allowed and a small-diameter hole portion 17 for preventing the locking ball 15 from retreating is fitted so as to be movable in the longitudinal direction.

  A body cover 19 is screwed to the outer end of the guide ring 18 for detachment, and is urged toward the inlet 2 by a detachable spring 20. One end of the detachable spring 20 is in contact with a front end ring 21 fitted to the front end of the three-way hole body 9, and the front end ring 21 reaches a position where it comes into contact with the stop ring 22. ) Is urged by the tip spring 23 so as to be movable.

  With the above configuration, when the plug 5 is inserted into the socket 3 in the state shown in FIG. 1, the locking ball 15 moves in the radial direction at a position corresponding to the locking groove 8 of the plug 5. 8 and the detachable guide ring 18 is moved to the inlet side through the flange 6 and the tip ring 21 of the plug 5, so that the small-diameter hole portion 17 is located outside the locking ball 15. In response to this, the movement of the locking ball 15 is prevented, and the plug 5 is locked as shown in FIG.

  When the detachable ring guide 18 is moved to the outlet side from the state shown in FIG. 2, the large-diameter hole portion 16 of the detachable ring guide 18 corresponds to the outside of the locking ball 15. The ball 15 comes out of the locking groove 8 and is pushed by the tip ring 22 so that the plug 5 is detached from the socket 3.

  A spindle 25 is provided in the socket 3 so as to open and close the flow path 24 by attaching and detaching the plug 5. An intermediate packing 26 is in airtight contact with the outer periphery of the spindle 25, and a sheet packing 27 is provided on the inflow port 2 side. The sheet packing 27 is attached so as to abut against an intermediate washer 29 by a spindle spring 28. It is energized. In a state where the plug 5 is not attached to the socket 3, as shown in FIG. 1, the sheet packing 27 hits the intermediate washer 29 and closes the flow path 24. As shown in FIG. 2, when the plug 5 is attached to the socket 3, the spindle 25 is moved toward the inlet 2 against the spindle spring 28 by the insertion tip of the plug 5, and the seat packing 27 is separated from the intermediate washer 29. The fluid entering from the inlet 2 flows to the flow path 24 through the through hole 30 formed in the spindle 25. When the plug 5 is removed from the socket 3, the spindle 25 is returned to the state shown in FIG. 1 by the spindle spring 28 and closes the flow path 24.

  The intermediate body 10 has an intermediate flow path 31 that communicates with the flow path 24, and a step 32 is formed on the inlet 2 side thereof. A flow rate adjusting valve 34 for adjusting the flow rate of the fluid entering from the flow port 2 is provided so as to be sandwiched between the stepped portion 32 and the side wall surface 33 of the adapter 11. In this embodiment, the flow rate adjusting valve 34 is sandwiched between the step portion 32 and the side wall surface 33, but can be attached by any other appropriate structure.

  As shown in FIGS. 3 and 4, the flow rate adjusting valve 34 includes a central flow path member 35, an eccentric flow path member 36, and a spacer sheet 37. The central flow path member 35 is provided in a substantially convex shape in cross section having a protrusion having a height of about 1.5 mm on the outside of a substantially disk shape having a thickness of about 1.5 mm. The center fine hole 38 of about 0.3 to 0.5 mm which is easy to machine, and about 0.3 mm in the embodiment shown in the figure is formed. The eccentric channel member 36 is provided in a disk shape having a substantially cylindrical shape with flat sides on both sides and a thickness of about 1.5 mm. The eccentric channel member 36 has a hole diameter similar to that of the center microchannel 38 at a position eccentric from the substantially center. An eccentric fine hole 39 is formed. The spacer sheet 37 has a corrosion resistance such as a thin stainless steel sheet material having a thickness smaller than the diameter of the micropore, for example, about 0.02 to 0.05 mm, and about 0.03 mm in the embodiment shown in the figure. The sheet material is formed in a substantially ring shape having an inner diameter of about 8 mm and an outer diameter of about 11 mm. A spacer sheet 37 is applied to both sides of the eccentric flow path member 36, and the whole is sandwiched by the central flow path member 35 from both sides. Ring-shaped packings 40 are fitted and sealed at both ends of the flow rate adjusting valve 34, that is, at the outer step portion of the central flow path member 35.

  In this embodiment, the flow rate adjusting valve has a central flow path member on both sides and an eccentric flow path member in the middle and spacer sheets on both sides of the intermediate eccentric flow path member. An appropriate number of road members and spacer sheets can be provided, and the arrangement thereof can also be appropriately provided. In this embodiment, a ring-shaped packing 40 is fitted and sealed around the central flow path member 35 located on both sides. However, the ring-shaped packing can be formed in an appropriate seal structure. 40 is formed of a nylon-based synthetic resin material, but may be formed of other appropriate materials.

  A gap between the intermediate body 10 and the adapter 11 is sealed by an O-ring 41, and a filter 42 is provided on the inlet side of the adjustment valve 34.

  With the above configuration, the fluid flowing from the inflow port 2 sequentially passes through the central micro flow path 38, the ring of the spacer sheet 37, the eccentric micro hole 39, the ring of the spacer sheet 37, and the central micro hole 38 in order. Is adjusted and always flows out into the intermediate flow path 31 in a small amount. In order to finely adjust the flow rate, the adapter 11 may be moved to adjust the clamping force and fixed with a lock member at a predetermined position. Further, according to the results of the experiment, it was confirmed that the flow rate adjusting valve of the present invention can sufficiently cope with a temperature change and can supply a certain amount of oxygen even if there is a temperature difference of room temperature ± 25 ° C.

  When supplying oxygen in a fitness club or the like using the connection joint as described above, the oxygen replenishing device configured to supply oxygen to a user's mouse through a hose from a pipe provided on a ceiling or the like is provided in the present invention. The above connection joint may be used. Moreover, the said flow-path adjustment valve can be used for other various flow paths as desired.

It is explanatory drawing of the state which showed one Example of this invention and isolate | separated the socket and the plug. It is explanatory drawing of the state which connected the socket and the plug. It is expansion explanatory drawing of the flow volume adjustment valve part (A part of FIGS. 1, 2). It is a disassembled perspective view of a flow regulating valve.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connection joint 3 Socket 5 Plug 11 Adapter 24 Flow path 32 Step part 33 Side wall surface 34 Flow control valve 35 Center flow path member 36 Eccentric flow path member 37 Spacer sheet 38 Central micro hole 39 Eccentric micro hole

Claims (6)

  A plurality of flow path members in which fine holes are formed in a flow path are provided, and a ring-shaped spacer sheet thinner than the diameter of the fine holes of the flow path members is sandwiched between the flow path members. Flow adjustment valve.   The flow path member includes a central flow path member in which the micro hole is formed substantially at the center of the flow path member, and an eccentric flow path in which the micro hole is formed at a position corresponding to the center of the ring of the spacer sheet and eccentric from the center. The spacer sheet is sandwiched between the flow path members so that each micropore of the central flow path member and the eccentric flow path member is opened in the ring of the spacer sheet. 1. The flow rate adjusting valve according to 1.   The flow control valve according to claim 1 or 2, wherein a diameter of the fine hole is 0.3 to 0.5 mm, and a thickness of the spacer sheet is 0.02 to 0.05 mm.   A connecting joint having a socket and a plug that are detachably connected, and a spindle provided to open and close the flow path by attaching and detaching the plug in the socket, wherein the socket communicates with the flow path A connecting joint comprising an intermediate main body having a passage, wherein the flow rate adjusting valve according to any one of claims 1 to 3 is provided in an intermediate flow path upstream of the spindle.   A step is formed on the upstream opening side of the intermediate flow path, a flow path member on one side of the flow path adjustment valve is abutted on the step, and an adapter that is movable in the longitudinal direction of the intermediate body is provided. The connection joint according to claim 4, wherein the adapter is brought into contact with a flow path member on the other side of the flow rate adjusting valve, and the flow path adjusting valve is held between the adapter and a stepped portion.   An oxygen replenishing device in which the socket of the connection joint according to claim 4 or 5 is connected to an oxygen supply source side and a hose leading to a mouse is connected to the plug.

Images