TWM521133U - Valve opening/closing device - Google Patents

Description

Valve opening and closing device

The present invention relates to a valve opening and closing device, a closing operation of a remote control control target valve, and a remote detection of an open/close state of a control target valve.

A known valve opening and closing device can remotely operate a gas cylinder or a partition valve to open and close the valve. Further, the known valve opening and closing device also has a function of automatically closing the valve in an emergency or the like. This is a device that remotely operates an electromagnetic coil or the like to rotate a rotating shaft of a control target valve to open and close the valve. However, it is considered that when the valve opening and closing device fails, or any obstacle or the like is caught in the driving portion of the device, the valve opening and closing operation is hindered. Therefore, in order to surely perform the valve opening and closing operation, it is necessary to directly visualize the valve and check whether the valve is opened or closed as expected.

In order to solve this problem, it is conceivable to transmit a detection value such as a pressure gauge or a flow meter connected to a gas cylinder or the like, and to detect a valve opening and closing state based on the detected value. However, the detection of the valve opening and closing state by this method is an indirect method, and is not a means for directly detecting whether the valve body is actually opened or closed. Therefore, in the past, there was no means for the remote detection valve to open or close as expected, and in order to allow the valve to be opened and closed, it is necessary to directly visually confirm the valve.

It is very troublesome to directly visually confirm the opening and closing state of the valve every time the valve is opened and closed. In addition, there are cases where the valve cannot be directly visually observed in an emergency. There is therefore a need for a valve opening and closing device that can remotely operate the opening and closing of the valve and allow the operation to be performed to confirm whether the valve is open and closed as intended.

Patent Document 1 discloses a gas cylinder cap automatic opening and closing device, and has a blade detecting mechanism including a restriction stopper. This device detects the opening and closing state of the valve by the circuit type switch, and has an energized portion in the vicinity of the gas cylinder, so that it is difficult to use it in a flammable environment. In order to be used in a flammable environment, it is preferable not to provide an energization portion in the driving portion of the valve opening and closing device, and conventionally, there is no valve opening and closing device of such a structure. Patent Document 2 discloses a valve opening and closing device. However, the valve opening and closing device cannot detect the opening and closing state of the valve.

[Advanced technical literature] [Patent Literature]

[Patent Document 1] Japanese Unexamined Publication No. SHO 60-91894

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2009-115197

The subject of the present invention is to provide a valve opening and closing device capable of remotely operating the control target valve to be closed, and to remotely confirm the opening and closing of the valve. state. Further, a valve opening and closing device is provided, and no energizing portion is provided in the driving portion of the valve opening and closing device or in the vicinity of the valve.

In order to solve the above-described problems, the creator of the present invention has been conceived by optical fiber reading: a rotation state of a valve fitting portion that integrally rotates an opening/closing state of a control target valve with a rotation axis of a valve, and/or a member that interlocks with a valve fitting portion In the rotated state, the opening and closing state of the control target valve is detected. Further, it has been found that the above problem can be solved by optical fiber optical detection, a method of rotating the valve fitting portion, and/or a rotation state of a member interlocking with the valve fitting portion, and the present invention has been completed.

The present invention for solving the above problems is as follows.

[1] A valve opening and closing device that rotates a rotation axis of a control target valve to open and close the control target valve, wherein the valve opening and closing device has the rotary shaft that is directly or indirectly fitted to the control target valve, and a valve fitting portion that rotates on the same axis as the rotation shaft, and a power storage unit that stores power for rotating the valve fitting portion in a direction in which the control target valve is closed, and stores power in the power storage unit. And the control unit that rotates the valve fitting portion in a direction in which the control target valve is opened, and the switching unit that switches the holding and releasing of the power stored in the power storage unit, and switches the switching unit to control Opening and closing of the above-mentioned control object valve The control unit is configured to detect the opening and closing state of the control target valve by reading the rotation state of the valve fitting portion and/or the rotation state of the interlocking member interlocking with the valve fitting portion by the optical fiber. Open and close state detection means.

[2] The valve opening and closing device according to [1], wherein the interlocking member is provided with an optical tag.

[3] The valve opening and closing device according to [1], wherein the rolling head is connected to the interlocking member.

[4] The valve opening and closing device according to [3], wherein the rolling head has a function of preventing excessive rotation of the rotating shaft of the control target valve.

[5] The valve opening and closing device according to any one of [1] to [4] wherein the interlocking member is a gear.

[6] The valve opening and closing device according to [1], wherein an optical tag is attached to an outer peripheral portion of the valve fitting portion.

[7] The valve opening and closing device according to [1], wherein the power storage unit is a coil spring that is wound as a shaft center in a direction parallel to an axial center of the valve fitting portion.

[8] The valve opening and closing device according to [1], further comprising: a display unit for displaying an opening/closing state of the control target valve read by the valve opening/closing state detecting means.

Optical fiber optics through the valve opening and closing device of the present invention Detection: a rotation state of the valve fitting portion that rotates together with the rotation shaft of the control target valve, and/or a rotation state of the interlocking member that is interlocked with the valve fitting portion. Thereby, the actual opening and closing state of the control target valve can be detected remotely. Further, since the optical fiber is remotely detected, there is no energized portion around the driving portion of the valve opening and closing device. Therefore, the valve opening and closing device of the present invention can be used even in a flammable environment.

100‧‧‧ valve opening and closing device

10‧‧‧shell

11‧‧‧ label reading port

12‧‧‧ valve fitting

13‧‧‧Fiber

14‧‧‧Management Department

16‧‧‧Drive gas supply port

17‧‧‧Drive gas supply pipe

18‧‧‧ Drive Department

19a, 19b, 19c‧‧‧ gears

20‧‧‧Rotary axis

22‧‧‧ cylinder

24‧‧‧Locking mechanism

26‧‧‧ coil spring

30‧‧‧Fixed parts

32‧‧‧ pillar

50‧‧‧Black Label

51‧‧‧White Label

52‧‧‧ label reader

60‧‧‧ gas cylinder

61‧‧‧Control valve

70‧‧‧Control Department

71‧‧‧ display lights

72‧‧‧ display lights

73‧‧‧Three-way solenoid valve

81‧‧‧ Ratchet gear

82‧‧‧ Gears

83‧‧‧ helical gear

84‧‧‧ helical gear

85‧‧‧ damping

86‧‧‧Lock shaft B

86a‧‧ Spring

87‧‧‧Locking axis A

91‧‧‧ Gears

93‧‧‧blocks

95‧‧‧ rolling head

97‧‧‧Rotary axis

99‧‧‧ gears

Fig. 1 is a side view showing a structural example of the valve opening and closing device of the present invention.

Fig. 2 is a bottom view showing a structural example of the valve opening and closing device of the present invention.

Fig. 3 is a perspective view showing a structural example of the valve opening and closing device of the present invention.

Fig. 4 is an explanatory view showing a tab attached to the outer peripheral portion of the valve fitting portion.

Fig. 5 is an explanatory view showing a label attached to the outer peripheral portion of the valve fitting portion.

Fig. 6 is an explanatory view showing a state in which the valve opening and closing device of the present invention is attached to a gas cylinder.

Fig. 7 is an explanatory diagram showing a configuration example of the lock mechanism.

Fig. 8 is an explanatory view showing an example of a label attached to a member that is interlocked with the valve fitting portion.

The present invention will be described in detail below with reference to the drawings.

First, a structural example of the valve opening and closing device of the present invention will be described. Fig. 1 is a side view showing a structural example of the valve opening and closing device of the present invention, and Fig. 2 is a bottom view of the same. Fig. 3 is a perspective view for explaining an internal structure of the drive unit 18 of Fig. 1 . The valve opening and closing device is a valve opening and closing device that opens and closes the control target valve by rotating a rotation axis of the control target valve. In the valve opening and closing device, the operation of opening the control target valve is performed by manually rotating the operating portion 14, and the operation of closing the control target valve is performed by remote control.

18 in Fig. 1 is a drive unit of the valve opening and closing device. Reference numeral 10 denotes a casing which is fixed to the periphery of the control target valve by the fixing member 30 via the stay 32. A valve fitting portion 12 having a circular outer circumference is housed in the casing 10. A rotating shaft 20 is attached to the upper portion of the valve fitting portion 12 at the same axis. The valve fitting portion 12 is directly or indirectly fitted to a rotation shaft of a control target valve (not shown) and is rotatable about the same axis as the rotation axis of the control target valve. That is, the axis of the rotation axis of the control target valve is the same as the axis of the rotation shaft 20 of the valve opening and closing device of the present invention. When the valve fitting portion 12 is rotated, the rotation axis of the control target valve is rotated, and the control target valve is opened and closed in response to the rotation direction thereof.

A cylinder 22, a locking mechanism 24, and a coil spring 26 are disposed in the casing 10.

The coil spring 26 is stored for controlling the valve fitting portion 12 The power of the object valve to rotate in the direction of closing. The coil spring 26 is wound around the axis parallel to the axial center of the valve fitting portion 12. In the coil spring 26, the operating portion 14 is attached to the same axis as the coil spring 26. A gear 19a is attached to the lower side of the operating portion 14 at the same axis. The gear 19a is engaged with the gear 19b. The gear 19b is engaged with the gear 19b. A rotating shaft 20 is attached to the gear 19c at the same axis. That is, the rotation of the operating portion 14 in the predetermined direction is transmitted by the gears 19a, 19b, and 19c, and the rotating shaft 20 and the valve fitting portion 12 are rotated in the direction in which the control target valve is opened. The coil spring 26 is wound up by rotating the operating portion 14 in the predetermined direction. The coil spring 26 that has been wound up is stored with power for being driven by the gears 19a, 19b, and 19c, and the rotating shaft 20 and the valve fitting portion 12 are rotated in a direction in which the control target valve is closed.

One end of the driving gas supply pipe 17 is connected to the cylinder 22 via the driving gas supply port 16. The other end of the driving gas supply pipe 17 is connected to a driving gas supply source (for example, a compressor or a driving gas cylinder) (not shown). A lock mechanism 24 is coupled to the cylinder 22.

The lock mechanism 24 has a structure for switching between the power stored and released to the coil spring 26 (hereinafter referred to as a "switching portion"). When the lock mechanism 24 is operated, the rotation shaft 20 and the valve fitting portion 12 cannot be rotated in a predetermined direction. That is, during the filling of the driving gas at a predetermined pressure in the cylinder 22, the locking mechanism 24 maintains the power stored in the coil spring 26. On the other hand, when the driving gas in the cylinder 22 is equal to or lower than the predetermined pressure, the lock mechanism 24 releases the power stored in the coil spring 26.

Driving gas supplied from the driving gas supply pipe 17 The flow rate is adjusted by a control unit (not shown). The driving gas is not particularly limited, but is preferably compressed air or nitrogen.

Fig. 7 is an explanatory diagram showing an example of a lock mechanism. In the gear 19b, the ratchet gear 81 having the ratchet mechanism is fixed to the same shaft center. The ratchet gear 81 does not rotate when the coil spring 26 is rolled up, and rotates only when the power stored in the coil spring 26 is released and returned. At the ratchet gear 81, a gear 82 is engaged which fixes the helical gear 83 with the same axial center. The helical gear 84 is engaged with the helical gear 83. A blade-shaped damping 85 is fixed to the helical gear 84. A lock shaft B 86 is provided near the damping 85. The lock shaft B 86 is coupled to the lock shaft A 87. The lock shaft A 87 and the lock shaft B 86 have a seesaw mechanism, and when one of them rises, the other side descends. When the lock shaft B 86 is lowered, the lock shaft B 86 comes into contact with the damping 85, and the damping 85 is locked and cannot be rotated. On the other hand, when the lock shaft B 86 is raised, the damping 85 is rotatable. The lock shaft B 86 is biased in the upward direction by the spring 86a.

The cylinder 22 protrudes from the rod portion (not shown) in response to the pressure in the cylinder, and can switch whether or not the lock shaft B 86 is lowered. The lock shaft B 86 is lowered by the start of the lock axis A 87. The cylinder 22 maintains the state in which the lock shaft B 86 is lowered during a predetermined pressure in the cylinder. Thereby, the lock shaft B 86 is brought into contact with the damping 85, and the damping 85 is locked and cannot be rotated. On the other hand, when the cylinder body is lower than the predetermined pressure, the lock shaft B 86 is raised by the spring pressure of the spring 86a, and the lock shaft A 87 is lowered. Thereby, the locking of the damping 85 is released, so that it can be rotated.

In the winding direction of the coil spring 26 (that is, the control target valve In the open direction), although the gears 19a to 19c are rotated, the ratchet gear 81 does not rotate due to the action of the ratchet mechanism, and the gear 82 is not driven. Therefore, the coil spring 26 can be rolled up even if the lock mechanism 24 operates. On the other hand, the coil spring 26 that has been wound up is in the returning direction (that is, the direction in which the control target valve is closed), and the ratchet gear 81 is rotatable so that it rotates. The rotation of the ratchet gear 81 at this time is sequentially transmitted to the damping 85 via the gear 82, the helical gear 83, and the helical gear 84. According to this configuration, when the lock shaft B 86 is lowered and the damping 85 is locked to be non-rotatable, all the gears are not rotated. Therefore, the coil spring 26 cannot be recovered. That is, the power stored in the coil spring 26 is maintained. As described above, the lock shaft B 86 is controlled by the pressure in the cylinder 22. Therefore, by controlling the operation of the lock shaft B 86 by remotely controlling the pressure in the cylinder 22, it is possible to control the holding or releasing of the power stored in the coil spring 26 that is rolled up. By manually pressing the lock shaft A 87 down, the locking of the damping 85 can be released regardless of the pressure in the cylinder 22.

The opening and closing of the control target valve is controlled as described above. In the valve opening and closing device of the present invention, the valve opening and closing state detecting means is provided to detect the opening and closing state of the control target valve. The open/close state of the control target valve is read by the optical fiber by the rotation state of the valve fitting portion 12 and/or the rotation state of the interlocking member interlocking with the valve fitting portion 12. Examples of the interlocking member include gears 19a, 19b, 19c, and 91 and a rotating shaft 20. As the interlocking member, when a series of operations from the opening of the control target valve to the closing is performed, it is preferable to rotate the member by one rotation.

Hereinafter, a method of reading the rotation state of the valve fitting portion 12 by the optical fiber will be described.

A label reading port 11 is formed in a portion of the casing 10 at the position of the valve fitting portion 12, and the label reading port 11 can observe a label (described later) provided on the outer circumferential surface of the valve fitting portion 12. . One end of the optical fiber 13 is attached to the label reading port 11. The other end of the optical fiber 13 is connected to a tag reader (not shown). The label reader (valve opening/closing state reading means) optically reads the label displayed on the outer peripheral portion of the valve fitting portion 12 displayed on the portion corresponding to the label reading port 11 via the optical fiber 13. The tag reader is composed of a light source and a light receiving element. The light source is irradiated, and then the amount of light reflected by the label is read by the light receiving element. The tag reader transmits the read signal to a control unit (not shown).

Fig. 4 is an explanatory view showing a development of a label attached to the outer peripheral portion of the valve fitting portion 12. This label is attached along the outer peripheral portion of the valve fitting portion 12 as shown in Fig. 5 . In Fig. 4, in the two-labeled label, the upper layer is divided into two regions having different light reflectances for optical detection. In Fig. 4, 50 is a blackened black label, and 51 is a white painted white label. The valve fitting portion 12 is directly or indirectly fitted to the rotating shaft of the control target valve, and is rotatable together with the rotating shaft of the control target valve. Therefore, by detecting the rotation state of the valve fitting portion 12, the opening and closing state of the control target valve can be detected. The rotation state of the valve fitting portion 12 is detected by the above label. Specifically, when the black tag 50 is located at a portion corresponding to the tag reading port 11 in the first drawing, it is in a state in which the control target valve is closed. Also when the white label 51 is located there, it is a state in which the control object valve is opened. Lower layer The display is for visually confirming the display of the opening and closing state of the control target valve, and is not essential to the present invention.

Next, an example of a method of reading the rotation state of the interlocking member that is interlocked with the valve fitting portion 12 by the optical fiber will be described below.

Fig. 8 is an explanatory view for the description of the label attached to the interlocking member. The same components as those in Fig. 7 are denoted by the same reference numerals, and their description will be omitted. 91 is a gear that rotates on the same axis as the ratchet gear 81. The gear 91 is interlocked with the ratchet gear 81 by the rotating shaft 97. A portion of the gear 91 is mounted with a rolling head 95. The rolling head 95 has the same function as the above label. That is, the label reading port is disposed at a predetermined position, and by detecting whether or not the rolling head 95 of the label reading port portion is present by using the optical fiber, the opening and closing state of the control target valve can be detected.

A sheet-shaped stopper 93 is attached to the gear 91, and the stopper 93 is pivoted about the rotation shaft 97. The stopper 97 protrudes more than the outer diameter of the gear 91. When the projection reaches a predetermined position, the gear 91 is prevented from rotating by contact with a casing or the like (not shown). That is, if the manipulation portion 14 is rotated, further rotation cannot be performed at the predetermined position. Thereby, excessive rotation of the rotating shaft of the control target valve is prevented. The rolling head 95 can also be made to have the same function as the stopper 93. In other words, the rolling head 95 may be disposed to protrude more than the outer diameter of the gear 91. When the protruding portion reaches the predetermined position, the gear 91 may not be rotated by contact with a casing or the like (not shown).

Next, the operation of the valve opening and closing device of the present invention will be described with reference to the drawings. Fig. 6 is an explanatory view showing a state in which the drive unit 18 of the valve opening and closing device 100 of the present invention is attached to a gas cylinder. In Figure 6, 60 It is a gas cylinder, and a control object valve 61 is formed at the top. First, the valve fitting portion 12 is fitted to the control target valve 61. The casing 10 of the valve opening and closing device 100 is fixed to the gas cylinder 60 by the fixing member 30 via the stay 32. Thereby, the valve fitting portion 12 and the control target valve 61 are integrally rotated by the same axis.

When the control target valve 61 of the gas cylinder 60 is opened, the manipulation portion 14 is manually rotated in a predetermined direction. By this, the coil spring 26 is wound up, and the rotary shaft 20 and the valve fitting portion 12 are rotated along the axial center thereof, and the control target valve 61 is opened (the rotation of the valve fitting portion 12 at this time will be described below). The direction is called "A direction" and the opposite direction is called "B direction"). The valve fitting portion 12 is biased in the B direction by the coil spring 26 that is rolled up, that is, in a direction in which the control target valve 61 is closed. At this time, the three-way electromagnetic valve 73 that is interposed by the driving gas supply pipe 17 is actuated by the control signal of the control unit 70, and the driving gas is sent to the cylinder 22. After the predetermined pressure is reached in the cylinder 22, the lock shaft B 86 is lowered by manually raising the lock shaft A 87. Thereby, the damping 85 is brought into contact with the lock shaft B 86, and it is locked and cannot be rotated. As a result, the rotation of the valve fitting portion 12 and the rotating shaft 20 in the B direction is restricted. During the predetermined pressure period in the cylinder 22, the state in which the lock shaft B 86 is lowered is maintained. That is, during the predetermined pressure in the cylinder 22, the state in which the control target valve 61 is opened is maintained. At this time, the white label 51 displayed on the outer peripheral portion of the valve fitting portion 12 is displayed in the portion of the label reading port 11. The tag is read by the tag reader 52 via the optical fiber 13, and the "valve open" signal is transmitted to the control unit 70. The control unit 70 receives the "valve open" signal, which will be The display lamp 71 corresponding to "valve open" lights up.

When the control target valve 61 of the gas cylinder 60 is closed, the control unit 70 activates the three-way electromagnetic valve 73 to exhaust the driving gas in the cylinder 22. Thereby, the locking mechanism 24 is released. That is, the lock shaft B 86 is raised to release the damping of the damping 85. Thereby, the power stored in the coil spring 26 is released, and the valve fitting portion 12 and the rotating shaft 20 are rotated in the B direction. The control target valve 61 of the gas cylinder 60 is closed. At this time, the black label 50 displayed on the outer peripheral portion of the valve fitting portion 12 is displayed in the portion of the label reading port 11. The tag is read by the tag reader 52 via the optical fiber 13, and the "valve closed" signal is transmitted to the control unit 70. The control unit 70 receives the "valve closed" signal and lights the display lamp 72 corresponding to "valve closed".

The method of reading the label attached to the outer peripheral portion of the valve fitting portion 12 using the optical fiber 13 will be described above. The present invention is not limited thereto, and a label may be attached to the interlocking member that is interlocked with the valve fitting portion 12, and the label may be read using an optical fiber. The interlocking member is as described above. The label reading port may be configured as appropriate for the position of the interlocking member.

In the above-described valve opening and closing device 100, the opening and closing operation of the control target valve 61 is performed, and the actual opening and closing state of the control target valve 61 is transmitted to the control unit 70. Thereby, even if the person does not directly visually recognize the control target valve, the state of the control target valve can be grasped.

Since the valve opening and closing device 100 has no energizing portion in the driving portion 18, it can be used in a flammable environment.

Preferably, the three-way solenoid valve 73 is configured to exhaust the driving gas in the cylinder 22 when the power is not supplied. This can automatically shut down when there is a power outage. Close the control object valve. In this case, in order to confirm the state of the control target valve 61 even when the power is turned off, the tag reader 52 may be provided with a preliminary power source or the like. In the valve opening and closing device of the present invention, a conventional seismic sensor, a gas sensor, a fire sensor, or the like can be connected, and the control target valve can be closed during an earthquake or a gas leak or a fire.

As described above, in the valve opening and closing device 100, the operation of opening the valve is performed by manually rotating the operating portion 14, and the operation of closing the valve is performed by remote control, and is not limited thereto, and the valve is opened. It can also be done by remote control.

In the above description, the coil spring 26 is used as the power storage unit, and the present invention is not limited thereto, and air pressure, hydraulic pressure, various elastic bodies, or the like may be used as the power storage unit.

The label read by the optical fiber is not limited to the white label and the black label described above, and any label having a different reflectance may be used. For example, it is also possible to form a part of the member with a material having a different reflectance. For example, a groove or a concave-convex portion may be formed in various gears or the like to form a label.

As described above, the tag reader 52 or the three-way solenoid valve 73 is provided separately from the control unit 70, and is not limited thereto, and may be built in the control unit 70. The control unit 70 may be provided anywhere, and when the drive unit 18 is used in a flammable environment, it is preferable to provide it outside the igniting environment. Alternatively, it is preferable to make the control unit 70 an explosion-proof structure. The control unit 70 may be provided with a display lamp that notifies an abnormality when the control target valve does not operate as expected.

Although the length of the optical fiber 13 is not particularly limited, it is usually 1~100m, 2~50m is better.

As described above, the control unit 70 controls only one valve opening and closing device, and is not limited thereto, and may control a plurality of valve opening and closing devices.

As described above, the valve opening and closing device 100 is directly fixed to the gas cylinder 60, and is not limited thereto. The gas cylinder 60 and the valve opening and closing device 100 may be fixed to a wall, a column, or the like, respectively. As described above, the valve opening and closing device 100 is applied to the valve 61 of the gas cylinder 60, and is not limited thereto, and is also applicable to a partition valve that is interposed in various pipes. In this case, the fixing member 30 or the support post 32 may be appropriately designed and fixed to the vicinity of the valve body of the partition valve.

10‧‧‧shell

11‧‧‧ label reading port

12‧‧‧ valve fitting

13‧‧‧Fiber

14‧‧‧Management Department

16‧‧‧Drive gas supply port

17‧‧‧Drive gas supply pipe

18‧‧‧ Drive Department

20‧‧‧Rotary axis

22‧‧‧ cylinder

24‧‧‧Locking mechanism

26‧‧‧ coil spring

30‧‧‧Fixed parts

32‧‧‧ pillar

Claims (8)

A valve opening and closing device that opens and closes a control target valve by rotating a rotation axis of a control target valve, wherein the valve opening and closing device has a rotary shaft that is directly or indirectly fitted to the control target valve, and is capable of a valve fitting portion that rotates the same axis of the rotary shaft, and a power storage unit that stores power for rotating the valve fitting portion in a direction in which the control target valve is closed, and stores the power in the power storage unit. a valve fitting portion that rotates in a direction in which the control target valve is opened, a switching portion that switches between holding and releasing of power stored in the power storage portion, and a switching unit that controls the control target by switching the switching portion a control unit for opening and closing a valve; the valve opening and closing device includes a valve opening/closing state detecting means for reading a rotation state of the valve fitting portion and/or a valve fitting portion by an optical fiber by means of an optical fiber The opening and closing state of the control target valve is detected by the rotation state of the interlocking interlocking member. The valve opening and closing device of claim 1, wherein the interlocking member is provided with an optical tag. A valve opening and closing device according to claim 1, wherein the linking member is connected to the rolling head. The valve opening and closing device according to claim 3, wherein the rolling head includes: preventing excessive rotation of the rotating shaft of the control target valve Turn function. The valve opening and closing device according to any one of claims 1 to 4, wherein the interlocking member is a gear. A valve opening and closing device according to claim 1, wherein an optical tag is attached to an outer peripheral portion of the valve fitting portion. The valve opening and closing device according to the first aspect of the invention, wherein the power storage unit is a coil spring that is wound as a shaft center in a direction parallel to an axial center of the valve fitting portion. The valve opening and closing device according to the first aspect of the invention, further comprising: a display unit for displaying an opening/closing state of the control target valve read by the valve opening/closing state detecting means.