JP2009121501A - Check valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a check valve which is capable of allowing garbage or the like to be hardly entangled, highly reliable in check function, capable of easily using tools, and easily changed. <P>SOLUTION: The check valve has a valve body 1 having an inlet 11 and an outlet 12, having a flow passage between the inlet and the outlet, and having an opening 15 in the flow passage, and a check valve cartridge 10 arranged in the valve body to block the flow passage. The check valve cartridge includes a seat 3, a cartridge body 4 with its fore end fixed to the seat, a spring 6 stored in the cartridge body 4, a disk 5 urged against the spring and abutted on the seat, and a lid 2 for attaching the tip of the cartridge body to the opposing side, and is inclined to the outlet side with respect to the horizontal axis between the inlet and the outlet, and fixed to the opening. When one or more universal holes are formed in the valve body, the branching and integration of pipes, the functional inspection, the connection of various kinds of apparatuses or the like is facilitated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to the structure of a check valve used in a water supply system.

In a water supply system, for example, in a public water pipe network, main valve operation, main pipe rupture, large pressure fluctuations (extension of pumps, emergency water intake from fire hydrants, etc. cause extreme water demand in part of the piping system. Tap water may flow backward when the pressure drop occurs. This backflow may cause the tap water once discharged to be sucked into the water pipe, but the check valve is installed in the tap water flow path to prevent such a phenomenon.
Conventionally, various check valves for preventing a back flow of fluid have been used, but most of them are configured to be inserted in the middle of a water pipe and attached at an appropriate position. For example, the check valve includes a housing including a valve body and a spring that biases the valve body, and the spring is disposed in the flow path (see Patent Document 1). Further, Patent Document 2 showing a conventional technique discloses a check valve configured such that a valve axis is inclined with respect to a horizontal axis between a water inlet and a water outlet.
JP 59-37375 A Japanese Utility Model Publication No. 55-45944

In the water supply system, various kinds of dust exist in the pipe immediately after the pipe construction, and sometimes the dust etc. adheres to the check valve when the pipe is washed. In addition, dust such as rust and scale in pipes gradually exists over time. Such dust is entangled with the spring of the check valve disposed in the flow path, leading to deterioration of the check valve function. As described above, the function of the check valve deteriorates when the pipe is washed or with aging. Therefore, in order to maintain the check function, it is sometimes necessary to replace parts to prevent the deterioration of the function. Conventionally, as a method for preventing functional deterioration, the valve body has been replaced. However, the valve body must be removed from the water pipe and replaced with the valve body, which is difficult.
On the other hand, there is a check valve that can replace only the check function part (see FIG. 4 (b)), but in general, a check water valve and a check water meter are installed. The enclosure is installed in a narrow environment such as between a fence or a house. To replace the check function part of a check valve embedded underground with a water meter in such a place, In addition to the unreasonable posture, there was a problem that the tightening tool was in contact with the water meter in the water meter housing and the work was very difficult (see FIG. 4B).

In addition, when replacing only the non-return function part in the past, the problem that the problem is not known at the time of replacement even if a problem such as wrong installation occurs due to the work to incorporate the check function part at the replacement place. There was also.
Furthermore, since the valve main body does not have a function capable of performing a function test, it takes a lot of labor to test the check function after the valve main body is connected to the pipe. In addition, when connecting multiple pipes on the primary side of the valve body or branching multiple pipes from the secondary side of the valve body, the joint must be connected in the longitudinal direction of the pipe. There was also a problem that such merging and branching were hardly possible in the case.
The present invention has been made under such circumstances, and dust and the like flowing in the flow path are not easily entangled with the spring, and the tightening tool is easy to use when the check function part is replaced. The check valve is highly reliable and easy to replace. Further, in such a check valve, a check valve is provided that sufficiently induces the spring function by easily guiding water present in the space for housing the spring in the check function unit into the flow path. In addition, such a check valve provides a check valve that facilitates functional inspection, integration of piping, branching, connection of various devices, and the like.

The check valve of the present invention has a water inlet provided on the primary side and a water outlet provided on the secondary side, has a channel between the water inlet and the water outlet, and between the channels. A valve body having an opening; and a check valve cartridge disposed in the valve body and blocking the flow path. The check valve cartridge has a seat and a tip fixed to the seat. A cartridge body, a spring housed in the cartridge body, a disk disposed in the cartridge body and biased by the spring to come into contact with the sheet, and a side of the cartridge body facing the tip portion The lid is fixed to a locking portion in the opening so that the axis is inclined to the secondary side with respect to a horizontal axis between the water inlet and the water outlet. It is a feature. The valve body may have one or more universal holes on at least one of or both of the primary side and the secondary side. The disk or the cartridge main body may be provided with at least one guide for guiding the water in the space for storing the spring to the flow path on at least the upper surface or the side surface.
The cartridge main body and the lid fitted to the cartridge main body are provided in the cartridge main body, or are engaged and integrated with a convex member provided between the cartridge main body and the lid, The cartridge body may be detached from the lid by resisting the elastic force of the convex member. A groove-shaped portion is formed inside the lid, or a groove-shaped portion is formed by a separate member provided inside the lid, a fitting member is formed on the cartridge body, and the cartridge body and the cartridge The lid is integrated by fitting the fitting member into the groove-like portion, and the detachment of the cartridge body from the lid is adjusted to a predetermined shape with the groove-like portion fitting the fitting member. It may be performed depending on the situation. The cartridge main body and the lid are screwed into the cartridge main body, the cartridge main body and the lid are screwed together, or the cartridge main body and the lid are formed of the same material and integrated. You may do it.

  The dust flowing through the flow path is not easily entangled with the spring, so the function is unlikely to deteriorate. Easy to replace. Further, since the guide is provided, water existing in the space for storing the spring is easily guided, and the spring function can be sufficiently exerted. In addition, the use of universal holes facilitates branching, integration, function inspection, connection of various devices, and the like.

  Hereinafter, embodiments of the present invention will be described in detail with reference to examples.

First, Embodiment 1 will be described with reference to FIGS.
FIG. 1 is a front sectional view of the check valve of this embodiment, FIG. 2 is a front sectional view for explaining the water flow state of the check valve of this embodiment, and FIG. 3 is a view of the check valve of this embodiment. 4 is a front sectional view for explaining the check state, FIG. 4 is a layout view of the water system explaining the embodiment and the conventional example, and FIGS. 5 and 6 are front views of the check valve for explaining the replacement of the check valve cartridge. FIG. 7 is a front sectional view of a check valve cartridge for explaining the replacement of the cartridge body, and FIGS. 8 and 9 are right side views of the check valve cartridge for explaining the procedure for replacing the cartridge body from the lid. FIG. 10 is a front sectional view and a right side half sectional view of the check valve cartridge for explaining the flow of water when the disk is operated. FIG. 11 is a perspective view of the disk, a front view, and a cross section of the portion along the line AA. FIGS. 12A and 12B are a top view, a front view and a side view of the cartridge main body, FIG. 3 is a front sectional view and a ring spring plan view of the check valve cartridge for explaining the integration of the lid and the cartridge main body, and FIG. 14 is a front sectional view of the check valve cartridge for explaining the integration of the lid and the cartridge main body. FIG. 15 is a front sectional view of the cartridge body and a side sectional view of the lid for explaining the integration of the lid and the cartridge body, and FIG. 16 is a sectional view of the lid and the cartridge body. It is front sectional drawing of the non-return valve cartridge explaining integration.

  As shown in FIG. 1, the check valve according to this embodiment has a water inlet 11 provided on the primary side and a water outlet 12 provided on the secondary side, and between the water inlet 11 and the water outlet 12. As shown in FIG. 2, it has a valve body 1 having a flow path (water flow) indicated by an arrow. In addition to the water inlet 11 and the water outlet 12, the valve body 1 has an opening 15 (see FIG. 6) that is a third opening at the upper part between the two. The valve body 1 has a check valve cartridge 10. The check valve cartridge 10 shuts off the flow path and enables water stop and water flow, and a spring that biases the disk 5. 6, the cartridge body 4 that supports the spring 6, the sheet 3 that is fitted and fixed to the tip of the cartridge body 4, and the side of the cartridge body 4 that is opposite to the side on which the sheet 3 is fitted. It has a fixed lid 2. The valve body 1 is provided with a check valve cartridge housing portion 14 for housing the check valve cartridge 10, and the check valve cartridge housing portion 14 has a locking portion 13 for placing the check valve cartridge 10 and an opening 15. is doing. The check valve cartridge 10 is screwed and fixed to the opening 15 by the lid 2 so that the axis b is inclined to the secondary side (water outlet side) with respect to the horizontal axis a between the water inlet 11 and the water outlet 12. (See FIG. 6).

Next, the operation of the check valve according to the first embodiment will be described with reference to FIGS.
1 is connected to a water pipe or the like. When water flows from the water inlet 11, the water pushes up the disk 5 along the flow path (the flow of water indicated by the arrow in FIG. 2), and flows out from the water outlet 12 according to the flow path. At this time, the disk 5 is separated from the seat 3 by dynamic water pressure against the urging force of the spring 6 (FIG. 2).
FIG. 3 shows a state in which the check valve cartridge is activated when a check flow factor (negative pressure) is generated on the primary side before the water inlet 11 when the check valve is passing water (FIG. 2). . For example, when an abnormality occurs in the water main due to rupture or the like, a reverse flow factor (negative pressure) is generated in which water flows backward from the water outlet 12 (secondary side) to the water inlet 11 (primary side). The O-ring packing 7 mounted on the disk 5 comes into contact with and closely contacts the seat 3 by the reverse flow factor (negative pressure) and the urging force of the spring 6 to prevent the reverse flow.

Next, a method for replacing the check valve cartridge 10 will be described with reference to FIGS.
The check valve cartridge 10 is mounted on a locking portion 13 of a check valve cartridge housing portion 14 provided in the valve body 1, and the seat 3 is locked by an O-ring packing 8. The inside of the opening 15 and the outside of the lid 2 are threaded, and by combining the two and turning the lid 2, the check valve cartridge 10 is stored and fixed in the check valve cartridge storage portion 14, and stored and fixed. The check valve cartridge 10 is detached from the check valve cartridge housing portion 14 by turning the lid 2 on the opposite side of the hour. Therefore, the outer appearance of the lid 2 can use a tightening tool. In order to replace the check valve cartridge 10, the lid 2 is first loosened with a tightening tool, and then the check valve cartridge 10 integrated with the lid 2 is extracted from the check valve cartridge housing portion 14 of the valve body 1. The check valve cartridge 10 integrated with the extracted lid 2 is separated from the lid 2. A new check valve cartridge 10 is integrated with the lid 2. Next, the check valve cartridge 10 integrated with the new lid 2 is inserted into the check valve cartridge housing portion 14 of the valve body 1 through the opening 15, and the lid 2 is tightened and fixed using a tightening tool.

The check valve cartridge 10 integrates the cartridge body 4 by fitting the cartridge body 4 to the lid 2. In this way, the check valve cartridge 10 can be easily removed from the valve body 1 to facilitate the replacement operation. In this embodiment, two claws (convex members) 16 are formed in the vicinity of the end opposite to the end where the sheet 3 of the cartridge body 4 is attached. The cartridge body 4 is made of an elastic material, and the claw 16 contracts inward when pressed from the side surface direction of the cartridge body 4. On the other hand, a wide portion 17 is formed in the vicinity of the head inside the lid 2. A step is formed in the adjacent lower portion of the wide portion 17. When the cartridge body 4 is inserted into the lid 2 from the end on the side where the claw 16 is formed, the outside of the claw 16 is regulated by the adjacent lower portion of the lid 2, slides while shrinking inward, and is further inserted until it abuts. Then, the claw 16 reaches the wide portion 17 of the lid 2. At this time, the outside of the claw 16 is out of regulation, and returns to its original form by the elastic force of the claw 16. Further, the tab 16 is locked by the step between the wide portion 17 and the adjacent lower portion, and the cartridge body 4 and the lid 2 are integrated (FIG. 7).
In order to remove the cartridge body 4 from the lid 2, a notch portion 18 into which the tool 19 can be inserted is provided in the vicinity of the portion covered with the lid 2 of the cartridge body 4, and the tool 19 is inserted into the notch portion 18. This is rotated to move the outside of the tab 16 of the cartridge body 4 to a position regulated by the adjacent lower part (FIG. 8). Thereafter, the cartridge body 4 is detached from the lid 2 against the elastic force of the claw 16. (FIG. 9).

Next, with reference to FIG. 4, the replacement of the check valve of the embodiment in the basement will be described.
The check valve is attached to the secondary side of the water meter. Using a tightening tool, turn the check valve hex nut head (lid 2 in FIG. 7) to remove the check valve cartridge. At this time, since the hexagonal nut-shaped head is inclined to the secondary side, the tightening tool does not hit the water meter (FIG. 4A). On the other hand, since the head of the conventional check valve is not inclined, there is a possibility of hitting a water meter when a tool is used (FIG. 4B).

  Next, with reference to FIGS. 10 to 12, the flow of water when the disk is operated will be described. In the check valve cartridge 10 in which the disk 5 and the spring 6 are accommodated, the gap between the cartridge body 4, the disk 5 and the spring 6 is narrow, and the operation of the disk 5 is hindered by the water existing between them, and the spring function There is a problem that cannot be fully demonstrated. In order to solve this problem, in FIG. 11, four guides 20 are formed on the side surface of the disk 5 along the disk axis. In FIG. 12, two guides 21 are formed on the upper side surface of the cartridge body 4. Since the guides 20 and 21 can easily guide water existing between the cartridge body 4, the disk 5 and the spring 6 to the flow path as shown by the arrows (flow of water) in FIG. 5 can be operated smoothly and the spring function can be fully demonstrated. The position and number of guides can be appropriately determined according to the state inside the check valve cartridge 10.

Next, the integration of the cartridge body and the lid will be described with reference to FIGS. The integration of the cartridge main body and the lid constituting the check valve cartridge is achieved by the engagement of the claw 16 (convex member) of the cartridge main body 4 and the wide portion of the lid 2 as shown in FIG.
However, the present invention is not limited to the integration described in this embodiment, and the integration procedure shown in FIGS. 13 to 16 can also be applied.
In FIG. 13, as in FIG. 7, the cartridge body 4 and the lid 2 are integrated with the cartridge body 4 or engaged with a convex member provided between the cartridge body 4 and the lid 2. The cartridge body 4 is detached from the lid 2 by resisting the elastic force of the convex member. In the check valve cartridge described in FIG. 13A, a groove is formed in the upper side surface of the cartridge body 4 and a ring spring 22 (convex member) is disposed. In this state, the cartridge body 4 is fitted to the lid 2. Fix it. In the check valve cartridge described in FIG. 13C, grooves are formed in the upper side surface of the cartridge main body 4 and the side surface of the lid 2, and an O-ring 23 (convex member) is disposed in the groove. The cartridge body 4 is fitted and fixed.

14 and 15, a groove-like portion is formed inside the lid 2, or a groove-like portion is formed by another member provided inside the lid 2, and a fitting member is formed on the cartridge body 4. The cartridge main body 4 and the lid 2 are integrated by fitting a fitting member into the groove-like portion, and the cartridge main body 4 is detached from the lid 2 in a predetermined manner in the groove-like portion fitted with the fitting member. It is the structure performed by matching with the shape of. The check valve cartridge described with reference to FIG. 14 is integrated using a fitting member 24 protruding from the end of the cartridge body 4 and a fitting groove 25 provided inside the lid 2. The keyhole-shaped fitting member 24 having a protrusion is partially fitted into the fitting groove 25 having the same shape, and the protruding portion of the fitting member 24 is moved to another portion of the fitting groove 25, The fitting groove 25 is locked.
The check valve cartridge described with reference to FIG. 15 is integrated by using a fitting member 26 projecting to the outer periphery of the side surface of the cartridge body 4 and a fitting groove 27 provided on the inner side surface of the lid 2. The fitting groove 27 includes a plate-like member 28 having a portion cut out in the same shape as the fitting groove (a shape in which a horizontally long portion and a vertically long portion are combined in a T shape as shown in FIG. 15C). It is formed by pasting inside and fixing with screws 29. The fitting member 26 is partially fitted into the vertically long portion of the fitting groove 27 having the same shape, and the protruding portion of the fitting member 26 is moved to another portion (laterally long portion) of the fitting groove 27 to thereby fit the fitting member. 26 and the fitting groove 27 are fixed.

In FIG. 16, the cartridge body 4 and the lid 2 are formed by screwing the lid 2 into the cartridge body 4, screwing the cartridge body 4 and the lid 2, or forming the cartridge body 4 and the lid 2 with the same material. It is a configuration. The check valve cartridge described with reference to FIG. 16A is integrated by screwing the lid 2 and the cartridge body 4 into the cartridge body 4. This is achieved by forming a spiral groove 31 around one end of the outer surface of the cartridge body 4 and screwing the spiral groove 31 in accordance with the spiral groove formed on the inner surface of the lid 2. The check valve cartridge described in FIG. 16B is integrated by fixing the lid 2 and the cartridge body 4 with screws 30.
In the check valve cartridge described in FIG. 16C, the cartridge body 4 is made of the same material as the lid 2 and integrated. A lid portion 32 is provided at one end of the check valve cartridge 4. The external appearance of the lid portion 32 is a nut-shaped hexagonal shape as in the other examples of the embodiment. Further, a spiral groove is formed on the outer periphery of the lid portion 32 as in the other examples. When the check valve cartridge is mounted on the valve body, the spiral groove is accommodated in the check valve cartridge. The check valve cartridge 10 can be fixed by screwing in accordance with a spiral groove provided around the opening 15 of the portion 14 (see FIG. 5).

  As described above, in this embodiment, dust or the like flowing in the flow path is not easily entangled with the spring, and the function is unlikely to deteriorate. In addition, the tool is easy to use when replacing the check function part, and the check function part is integrated into one unit, so the check function is highly reliable and easy to replace. Further, since the guide is provided, water existing in the space for storing the spring is easily guided to the flow path.

Next, Embodiment 2 will be described with reference to FIGS.
FIG. 17 is a cross-sectional front view of the check valve according to this embodiment, FIG. 18 is a front view of the check valve according to this embodiment, and FIG. 19 is a layout diagram of a water supply system in which the check valve according to this embodiment is provided. FIG. 20 is a front view of a check valve with a joint attached to this embodiment, and FIG. 21 is a right side view and a joint front view of the check valve with a joint attached to this embodiment. In addition, the example of forming the check valve cartridge integration method and the guide described in the first embodiment is also applied to this embodiment.

  The check valve according to this embodiment shown in FIGS. 17 and 18 has a water inlet 11 provided on the primary side and a water outlet 12 provided on the secondary side, similar to FIG. And a valve body 1 having a flow path (water flow) between the water outlets 12. In addition to the water inlet 11 and the water outlet 12, the valve main body 1 has an opening which is a third opening at the upper part between the two. The valve body 1 has a check valve cartridge 10. The check valve cartridge 10 shuts off the flow path and enables water stop and water flow, and a spring that biases the disk 5. 6, the cartridge body 4 that supports the spring 6, the sheet 3 that is fitted and fixed to the tip of the cartridge body 4, and the side of the cartridge body 4 that is opposite to the side on which the sheet 3 is fitted. It has a fixed lid 2. The valve body 1 is provided with a check valve cartridge housing portion 14 for housing the check valve cartridge 10, and the check valve cartridge housing portion 14 has a locking portion 13 for placing the check valve cartridge 10 and an opening 15. is doing.

The feature of this embodiment is that it has at least one or more universal holes on at least one of the primary side or the secondary side of the check valve main body 1 described in the first embodiment. The check valve shown in FIG. 17 has two universal holes 33a and 33b on the water inlet 11 side (primary side) and two universal holes 34a and 34b on the water outlet 12 side (secondary side). Is sealed with screws.
As shown in FIG. 19, the check valve of this embodiment is installed underground. The check valve is attached to the secondary side of the water meter. When replacing the check valve, use a tightening tool to turn the check valve head and remove the check valve cartridge. At this time, since the head is inclined to the secondary side, the tightening tool does not hit the water meter.
20 and 21, the screw that has sealed one universal hole 34 a on the outlet 12 side of the valve body 1 is removed, and the joint 36 is attached.
As described above, this embodiment makes it possible to easily perform branching, integration, function inspection, connection of various devices, and the like of the pipe by using the universal hole together with the operation and effect of the first embodiment.

1 is a front sectional view of a check valve according to Embodiment 1. FIG. FIG. 3 is a front cross-sectional view illustrating a water flow state of the check valve according to the first embodiment. FIG. 3 is a front cross-sectional view illustrating a check state of the check valve according to the first embodiment. The layout of the water supply system explaining Example 1 and a prior art example. FIG. 3 is a front sectional view of the check valve for explaining the replacement of the check valve cartridge according to the first embodiment. FIG. 3 is a front sectional view of the check valve for explaining the replacement of the check valve cartridge according to the first embodiment. FIG. 3 is a front cross-sectional view of a check valve cartridge for explaining replacement of the cartridge main body according to the first embodiment. The right view of the non-return valve cartridge explaining the procedure which replaces | exchanges a cartridge main body from the lid | cover of Example 1. FIG. The right view of the non-return valve cartridge explaining the procedure which replaces | exchanges a cartridge main body from the lid | cover of Example 1. FIG. FIG. 4 is a front sectional view and a right side half sectional view of the check valve cartridge for explaining the flow of water when the disk is operated according to the first embodiment. The perspective view of the disk of Example 1, front view, and sectional drawing of the part which follows the AA line FIG. 3 is a top view, a front view, and a side view of the cartridge main body according to the first embodiment. The front sectional view and ring spring top view of a non-return valve cartridge explaining integration of the lid and cartridge main part of Example 1. The front sectional view of the non-return valve cartridge explaining integration of the lid | cover and cartridge main body of Example 1, and sectional drawing of the part which follows AA and BB. FIG. 2 is a front cross-sectional view and a side cross-sectional view of a cartridge body for explaining the integration of the lid and the cartridge body of the first embodiment. FIG. 3 is a cross-sectional front view of the check valve cartridge for explaining the integration of the lid and the cartridge main body according to the first embodiment. FIG. 3 is a front sectional view of a check valve according to a second embodiment. FIG. 6 is a front view of a check valve according to a second embodiment. The water system layout which arrange | positioned the non-return valve of Example 2. FIG. The front view of the nonreturn valve which attached the coupling to the nonreturn valve of Example 2. The right side view of a non-return valve which attached the joint to the non-return valve of Example 2, and the front view of a coupling.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Valve main body 2 ... Cover 3 ... Sheet 4 ... Cartridge main body 5 ... Disk 6 ... Spring 7, 8, 9 ... O-ring packing 10 ... Check valve Cartridge 11 ... Water inlet 12 ... Water outlet 13 ... Locking portion 14 ... Check valve cartridge storage portion 15 ... Opening portion 16 ... Nail (convex member) 17 ... Wide part 18 ... Notch part 19 ... Tool 20, 21 ... Guide 22 ... Ring spring 23 ... O-ring 24, 26 ... Fitting member 25, 27 ... Fitting Groove 28 ... Plate-like member 29, 30 ... Screw 31 ... Spiral groove 32 ... Lid portion 33a, 33b, 34a, 34b ... Universal hole 36 ... Joint

Claims (6)

A valve body having a water inlet provided on the primary side and a water outlet provided on the secondary side, having a channel between the water inlet and the water outlet, and having an opening between the channels; A check valve cartridge disposed within the valve body and blocking the flow path, the check valve cartridge comprising: a sheet; a cartridge body having a tip fixed to the sheet; and the cartridge body A spring housed in the cartridge body, a disk disposed in the cartridge body and urged by the spring to come into contact with the sheet, and a lid fitted to the side of the cartridge body facing the tip portion, The check valve according to claim 1, wherein the lid is fixed to the opening so that an axis thereof is inclined to the secondary side with respect to a horizontal axis between the water inlet and the water outlet. The check valve according to claim 1, wherein the valve body has one or more universal holes on at least one of or both of the primary side and the secondary side. 3. The guide according to claim 1, wherein the disk or the cartridge main body is provided with at least one guide for guiding water in a space for housing the spring to the flow path on at least an upper surface or a side surface. 4. Check valve. The cartridge main body and the lid fitted to the cartridge main body are provided in the cartridge main body, or are engaged and integrated with a convex member provided between the cartridge main body and the lid, The check valve according to any one of claims 1 to 3, wherein the cartridge main body is detached from the lid by resisting an elastic force of the convex member. A groove-shaped portion is formed inside the lid, or a groove-shaped portion is formed by a separate member provided inside the lid, a fitting member is formed on the cartridge body, and the cartridge body and the cartridge The lid is integrated by fitting the fitting member into the groove-like portion, and the detachment of the cartridge body from the lid is adjusted to a predetermined shape with the groove-like portion fitting the fitting member. The check valve according to any one of claims 1 to 3, wherein the check valve is performed. The cartridge body and the lid are integrated by screwing the lid into the cartridge body, screwing the cartridge body and the lid, or forming the cartridge body and the lid from the same material. The check valve according to any one of claims 1 to 3, wherein the check valve is provided.

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