Tank system, liquid transfer method using the same, and attachment

Abstract

This invention provides a tank system capable of simultaneously sterilizing the liquid storage tank and the tubes connected to the filling device, as well as a liquid delivery method and attachment using the tank system. [Solution] A tank system 1 for supplying liquid to a filling machine 102 comprises a tank 10 having a supply channel section 12 and an attachment 20 connected to the supply channel section 12, wherein the attachment 20 comprises a cylindrical chamber 21, a first lid 30 and a second lid 40 that are detachable from both openings of the chamber 21, and a tube 50 housed inside the chamber 21 and connected to the filling machine 102, the first lid 30 having a connecting channel section 31 that is detachable from the supply channel section 12 and the tube 50 and constitutes a channel that penetrates the first lid 30.

Description

[Technical Field]

[0001] The present invention relates to a tank system for delivering liquid from a tank storing liquid to an external device such as a filling machine, a liquid delivery method using the same, and an attachment. [Background Art]

[0002] Conventionally, filling devices that fill a container with a liquid such as a chemical solution have been known (see Patent Document 1). The chemical solution is stored in a tank, and the tank is connected to the filling device via piping, tubes, or the like. The end of such a tube or the like on the filling device side is configured of a filling needle or the like.

[0003] While these devices require sterilization, sterilization up to the tank and sterilization from downstream of the tank to the filling needle and the filling device are often performed separately. This is mainly due to the conventional reason that the constructors, maintenance personnel and the like for the former and the latter are different. Since sterilization is performed separately in this manner, an efficient sterilization process cannot be achieved. [Prior Art Documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Unexamined Patent Publication No. 2023-66358 [Summary of the Invention] [Problem to be Solved by the Invention]

[0005] In view of such circumstances, an object of the present invention is to provide a tank system capable of simultaneously sterilizing a tank storing liquid and a tube or the like connected to a filling device, a liquid delivery method using the tank system, and an attachment. [Means for Solving the Problem]

[0006] One aspect of the present invention for achieving the above objective is a tank system for supplying liquid to an external device, comprising a tank having a storage section for storing liquid and a supply channel section which is a channel for supplying liquid from the storage section to the outside, and an attachment connected to the supply channel section, wherein the attachment comprises a cylindrical chamber, a first lid and a second lid that are detachable from both openings of the chamber, and a tube housed inside the chamber and connected to the external device, and the first lid is detachable from the supply channel section and the tube and comprises a connecting channel section which constitutes a channel that penetrates the first lid. [Effects of the Invention]

[0007] According to the present invention, a tank system is provided that can simultaneously sterilize a liquid storage tank and tubes connected to a filling device, as well as a liquid delivery method and attachment using the tank system. [Brief explanation of the drawing]

[0008] [Figure 1] This is a schematic diagram of the tank system. [Figure 2] These are cross-sectional and exploded cross-sectional views of the attachment. [Figure 3] This is a schematic diagram of the tank system and attachments when CIP / SIP is being performed. [Figure 4] This is a schematic diagram of a tank system when products are being filled into tanks and transported. [Figure 5] This is a schematic diagram showing the tank placed in the first room and the attachment positioned to span both the first and second rooms. [Figure 6] This is a schematic diagram showing the process of transferring liquid from the tank to an external device. [Modes for carrying out the invention]

[0009] <Embodiment 1> [Overview of the Tank System] Figure 1 is a schematic diagram of the tank system according to this embodiment, and Figure 2 is a cross-sectional view of the attachment. The tank system 1 comprises a tank 10, an attachment 20, and a CIP / SIP device 60. The tank system 1 is a group of devices for supplying the liquid stored in the tank 10 to an external device (e.g., a filling machine). The liquid is not particularly limited, but can include pharmaceutical solutions for various applications such as medicines and semiconductors, raw materials for pharmaceutical solutions, beverages and their raw materials, and solvents such as water.

[0010] [tank] The tank 10 comprises a storage section 11 and a supply channel section 12. The storage section 11 is a container capable of holding liquid inside and is made of a material such as stainless steel. The storage section 11 may be provided with a stirring mechanism, a pressure adjustment mechanism, or a temperature control mechanism as needed. The supply channel section 12 is provided at the bottom or side of the storage section 11 and forms a channel for supplying the liquid inside the storage section 11 to an external device. The supply channel section 12 is provided with an openable / closable valve, a flow rate adjustment mechanism, or a fitting.

[0011] The tank 10 receives liquid from an upstream process device (not shown) into its storage section 11. The liquid can then be supplied from the storage section 11 to an external device via a supply channel 12. The tank 10 is also movable, as it is equipped with legs 13 to support it and wheels 14 at the ends of the legs 13.

[0012] [attachment] The attachment 20 is a component that connects the tank 10 to an external device. Specifically, the attachment 20 comprises a chamber 21, a first lid 30, a second lid 40, and a plurality of tubes 50.

[0013] [chamber] The chamber 21 is a cylindrical member capable of housing the tube 50 inside, and has openings at both ends in the axial direction. The openings of the chamber 21 are sealed by the first lid 30 and the second lid 40, forming an internal space (hereinafter referred to as the housing 25) that is isolated and sealed from the outside. The shape of the chamber 21 is cylindrical, but is not limited to this, and may be polygonal prism or other shapes.

[0014] Chamber 21 is positioned so that its axial direction is approximately horizontal. A drain 22 is provided at the bottom of Chamber 21. Drain 22 is a discharge passage for discharging the fluid inside the containment section 25 to the outside. A drain valve 23 is provided on Drain 22. Drain valve 23 is a valve that opens and closes the flow path of Drain 22 and is opened and closed by manual operation or automatic control. By opening Drain valve 23, cleaning fluid, steam, and the condensed water mentioned above can be discharged to the outside of Chamber 21.

[0015] [First lid part] The first lid portion 30 is a member that is detachably attached to one opening of the chamber 21. The first lid portion 30 is provided with a connecting channel portion 31. The connecting channel portion 31 is a member for forming a channel that penetrates the first lid portion 30. The connecting channel portion 31 consists of a first connecting portion 31a located outside the chamber 21 (a portion that protrudes from the first lid portion 30 toward the supply channel portion 12 of the tank 10) and a second connecting portion 31b located inside the chamber 21 (a portion that protrudes from the first lid portion 30 toward the interior of the chamber 21).

[0016] When the first lid 30 is attached to the chamber 21, the first connection part 31a is outside the chamber 21, and the second connection part 31b is inside the chamber 21. The first connection part 31a is connected to the supply channel section 12, and liquid from the tank 10 flows from the supply channel section 12 to the connection channel section 31. The second connection part 31b is connected to the manifold 51, and liquid flows from the connection channel section 31 to the manifold 51. The first connection part 31a and the supply channel section 12, and the second connection part 31b and the manifold 51 are detachable and are fixed in place with bolts or the like.

[0017] The first lid portion 30 further includes a bypass portion 32 and a bypass valve 33. The bypass portion 32 is a member that branches off from the first connection portion 31a, penetrates the first lid portion 30, and forms a flow path communicating with the housing portion 25 of the chamber 21. The bypass valve 33 is a valve provided in the middle of the bypass portion 32 that opens and closes the flow path of the bypass portion 32, and is opened and closed by manual operation or automatic control. By opening the bypass valve 33, part of the cleaning fluid or steam supplied from the supply flow path portion 12 can be directly introduced into the housing portion 25 of the chamber 21.

[0018] [Second Lid Portion] The second lid portion 40 is a member detachably attached to the other opening of the chamber 21. The first lid portion 30 and the second lid portion 40 have a function of sealing the interior of the chamber 21, and may be configured to be air-tightly connected via a sealing member such as an O-ring, for example. Further, the second lid portion 40 is removed from the chamber 21 when supplying liquid to an external device.

[0019] [Tube] The tube 50 is a tubular member housed in the housing portion 25 of the chamber 21. In the present embodiment, the tube 50 is connected to the connection flow path portion 31 (the second connection portion 31b) via a manifold 51. The manifold 51 is a member having a flow path obtained by branching the flow path of the connection flow path portion 31 into a plurality of flow paths. A connector 52 is provided at the other end of the tube 50, and the connector 52 is connected to an external device.

[0020] For example, when a filling machine for pharmaceutical use is used as the external device, the connector 52 is a filling needle having a needle shape. By inserting the connector 52 into a head tank or the like of the filling machine, the tank 10 can supply liquid to the filling machine via the supply flow path portion 12, the connection flow path portion 31, and the tube 50. The tube is not particularly limited in material or shape, and is made of, for example, a resin material or a metal material, and may have flexibility. The connector 52 is not limited to a shape like a filling needle, and may be a connection member such as a nozzle or a joint. Further, the tube 50 does not need to be a plurality of tubes, and may be a single tube.

[0021] [CIP / SIP device] The CIP / SIP apparatus 60 is a device for performing in-place cleaning (CIP) and in-place sterilization (SIP) on the flow paths of the tank 10, such as the storage section 11 and supply flow path section 12, as well as the flow paths of the attachment 20, such as the connection flow path section 31, manifold 51, and tube 50, and the housing section 25. Specifically, it is a group of devices for supplying the cleaning fluid and sterilization fluid used in CIP / SIP, as well as piping, fittings, valves for delivering these fluids, and valves and pumps for controlling the delivery and stopping of fluids. The cleaning fluid is water with an alkaline agent such as caustic soda added, water with an acidic agent added, water containing a surfactant, or water without such agents. These may be used in combination. The sterilization fluid is hot water or steam obtained by heating purified water, etc.

[0022] [Tank system operation] The operation of performing CIP / SIP in the tank system 1 and then supplying liquid to the filling machine 102 as an external device will be explained using Figures 3 to 6. As shown in Figure 3, when the drain valve 23 and bypass valve 33 are open, they are represented by white rectangles, and as shown in Figure 6, when these valves are closed, they are represented by black rectangles.

[0023] As shown in Figure 3, there are two rooms, a first room R1 and a second room R2, separated by a wall 100. The tank system 1 is located in the first room R1, and the filling machine 102 is located in the second room R2. A connecting section 101 is provided in the wall 100. The connecting section 101 is a device consisting of an opening that penetrates the wall 100 and a door that opens and closes that opening, and has a configuration similar to a pass box.

[0024] Room 1 R1 and Room 2 R2 are cleanrooms and are kept clean. Room 2 R2 is cleaner and under positive pressure than Room 1 R1. Therefore, even if the connecting section 101 is open, the atmosphere of Room 1 R1 will not flow into Room 2 R2. Note that Room 1 R1 does not necessarily have to be a cleanroom.

[0025] [CIP / SIP operation] Tank system 1 undergoes CIP / SIP. As shown in Figure 3, the first lid 30 of attachment 20 is attached to the chamber 21. Next, multiple tubes 50 are attached to the second connection part 31b of the connecting flow path part 31 via the manifold 51. With the tubes 50 housed in the housing part 25, the second lid 40 is attached to the chamber 21. The drain valve 23 and bypass valve 33 are also left open.

[0026] The attachment 20 assembled in this manner is attached to the tank 10. With this setup, the CIP / SIP device 60 is operated to perform CIP / SIP. Specifically, the CIP / SIP device 60 supplies cleaning fluid to the tank 10. The cleaning fluid flows into the storage section 11, the supply channel section 12, and the connection channel section 31 of the attachment 20. At the connection channel section 31, a portion of the cleaning fluid flows into the tube 50 via the manifold 51. The remaining cleaning fluid flows into the storage section 25 via the bypass section 32.

[0027] In this way, the cleaning fluid cleans the flow path from the tank 10 to the tube 50 and the housing 25. The cleaning fluid discharged from the tube 50 and the cleaning fluid that has cleaned the housing 25 are discharged to the outside through the drain 22. After cleaning is complete, the CIP / SIP device 60 supplies steam to the tank 10, etc., in the same way as CIP. That is, the steam sterilizes the flow path from the tank 10 to the tube 50 and the housing 25. The sterilizing fluid discharged from the tube 50 and the steam and condensed water that have sterilized the housing 25 are discharged to the outside through the drain 22.

[0028] [Liquid storage, tank transfer] After SIP is complete, the valve (not shown) in the supply channel section 12 is closed. Also, the drain valve 23 and the bypass valve 33 are closed. Then, the liquid is stored in the tank 10 as shown in Figure 4.

[0029] As shown in Figure 5, with the attachment 20 still attached, the tank 10 is moved so that the first lid 30 of the attachment 20 is located in the first room R1 and the second lid 40 is located in the second room R2. In other words, the tank 10 is moved to a position where the attachment 20 straddles the first room R1 and the second room R2.

[0030] [Liquid delivery] As shown in Figure 6, the second lid 40 is removed from the chamber 21. Then, the tube 50 is removed from the chamber 21 and attached to the filling machine 102. Then, the supply of liquid from the tank 10 is started. This allows liquid to be supplied from the storage section 11 of the tank 10 to the filling machine 102 via the supply channel section 12, the connecting channel section 31, the manifold 51, and the tube 50.

[0031] [Effects and benefits of the tank system attachment] The tank system 1 described above includes a tank 10 having a storage section 11 for storing liquid and a supply channel section 12 that constitutes a channel for supplying liquid from the storage section 11 to the outside, A tank system 1 comprising an attachment 20 connected to a supply channel section 12, which supplies liquid to a filling machine 102, Attachment 20 is, A cylindrical chamber 21, A first lid 30 and a second lid 40 that can be attached to both openings of the chamber 21, A tube 50 is housed inside the chamber 21 and connected to the filling machine 102. Equipped with, The first lid portion 30 is detachably attached to the supply channel portion 12 and the tube 50, and is characterized by having a connecting channel portion 31 that constitutes a channel that penetrates the first lid portion 30.

[0032] This tank system 1 produces the following effects: (1) Since the supply channel section 12, the connecting channel section 31, and the tube 50 are arranged in the chamber 21 in a connected state, the entire channel from the storage section 11 of the tank 10 to the tip of the tube 50 can be cleaned and sterilized as a whole. (2) The inside of the housing section 25, which is composed of the attachment 20, can also be sterilized. Furthermore, since the housing section 25 can be isolated and sealed from the outside, the housing tube 50 can be kept in a sterilized state. (3) The tank 10 and attachment 20 can be moved while maintaining the state described in (2). This allows the tank 10 and attachment 20 to be moved to the location where the filling machine 102 is positioned, and the tube 50 can be connected to the filling machine 102 simply by removing the second lid 40. This allows the liquid to be quickly supplied to the filling machine 102 while maintaining the sterile state of the flow path from the tank 10 to the tube 50.

[0033] In tank system 1, The connecting channel section 31 is A first connecting portion 31a protrudes from the first lid portion 30 toward the supply flow path portion 12, It comprises a second connecting portion 31b that protrudes from the first lid portion 30 toward the chamber 21, A bypass section 32 is provided, branching off from the first connection section 31a, passing through the first cover section 30, and communicating with the chamber 21. The bypass section 32 is characterized by being provided with an openable / closable bypass valve 33.

[0034] Because of this bypass section 32, cleaning fluid and sterilization fluid can be supplied directly to the inside of the chamber 21 without passing through the tube 50. This allows for rapid cleaning and sterilization of the inside of the chamber 21.

[0035] In the tank system 1, the attachment 20 is characterized in that the supply channel section 12 is detachable from the connecting channel section 31. With this configuration, the attachment 20 can be shared, such as by attaching it to other tanks 10. In addition, the tank 10 and the attachment 20 can be separated and maintained individually (disassembly, cleaning, replacement, etc.).

[0036] In the tank system 1, the tank 10 is characterized by being movable. Since the tank 10 is movable by wheels 14 provided on the legs 13, the position of the tank 10 can be freely determined regardless of the arrangement of the filling machine 102.

[0037] In tank system 1, The system includes a CIP / SIP device 60 that supplies cleaning fluid and sterilization fluid for cleaning and sterilizing the tank 10, the connecting channel section 31, the housing section 25 of the chamber 21, and the tube 50. The CIP / SIP device 60 is The tube 50 is placed in the housing section 25 of the chamber 21. Connect the tube 50 to the connecting channel section 31. The first lid 30 and the second lid 40 are attached to both openings of the chamber 21. The cleaning fluid and sterilization fluid are supplied with the connecting channel section 31 connected to the supply channel section 12. It is characterized by the following:

[0038] With this CIP / SIP device 60, the entire flow path from the storage section 11 of the tank 10 to the tip of the tube 50, as well as the storage section 25, can be cleaned and sterilized integrally while the tube 50 is sealed in the storage section 25 of the chamber 21.

[0039] In tank system 1, The system includes a CIP / SIP device 60 that supplies cleaning fluid and sterilization fluid for cleaning and sterilizing the tank 10, the connecting channel section 31, the housing section 25 of the chamber 21, and the tube 50. The CIP / SIP device 60 is The tube 50 is placed in the housing section 25 of the chamber 21. Connect the tube 50 to the connecting channel section 31. The first lid 30 and the second lid 40 are attached to both openings of the chamber 21. The connecting channel section 31 is connected to the supply channel section 12. The cleaning fluid and sterilization fluid are supplied with the bypass valve 33 open. It is characterized by the following:

[0040] If the bypass section 32 is not provided, or if the bypass valve 33 is closed, the cleaning fluid and sterilization fluid will reach the housing section 25 after passing through the tube 50. The tube 50 generally has a small diameter. Therefore, it takes time for the cleaning fluid, etc., to fill the entire housing section 25. On the other hand, if the bypass section 32 is open, a large amount of cleaning fluid, etc., can be directly introduced into the housing section 25, allowing for efficient cleaning and sterilization of the housing section 25.

[0041] In tank system 1, After cleaning and sterilization by the CIP / SIP device 60 is completed, With the second lid 40 removed from the chamber 21 and the tube 50 attached to the filling machine 102, Supplying liquid from tank 10 to filling machine 102 This feature allows the sterile tube 50, which has been kept in a sealed storage compartment 25, to be removed and attached to the filling machine 102 for liquid delivery.

[0042] In tank system 1, Tank 10 and attachment 20 are placed in Room 1 R1, which has a relatively low level of cleanliness. The filling machine 102 is not connected to the tube 50 and is located in the second room R2, which has a relatively high level of cleanliness. After cleaning and sterilization are completed by the CIP / SIP device 60, While maintaining the sterile state of tank 10 and attachment 20, The first lid 30 is located in the first room R1. The second lid 40 is located in the second room R2. The system includes a moving mechanism that moves the tank 10 and the attachment 20 so that the attachment 20 is positioned in the communication section 101 that connects the first room R1 and the second room R2. With the second lid 40 removed from the chamber 21 and the tube 50 connected to the filling machine 102, the liquid is supplied from the tank 10 to the filling machine 102. It is characterized by the following:

[0043] Chamber 21 is positioned to straddle the first room R1 and the second room R2. Although only the second lid 40 is removed from chamber 21, the inside of chamber 21 is in communication with the second room R2, so the tubes 50 inside are not contaminated. Thus, even though the tank 10 is located in the first room R1, the inside of chamber 21 with the second lid 40 removed becomes essentially part of the second room R2, so the tubes 50 are not contaminated by the atmosphere of the first room R1. In other words, the tank 10 can remain located in the first room R1, and the sterile tubes 50 can be connected to the filling machine 102. Note that the moving mechanism referred to here includes not only the wheels 14 provided on the legs 13, but also the power source and guides such as rails that move the tank 10 with the wheels 14.

[0044] A liquid transfer method using the above-described tank system 1, The tank 10 and attachment 20 are placed in the first room R1, which has a relatively low level of cleanliness. The filling machine 102 is not connected to the tube 50, and is placed in the second room R2, which has a relatively high level of cleanliness. After cleaning and sterilization are completed by the CIP / SIP device 60, While maintaining the sterile state of tank 10 and attachment 20, The first lid 30 is located in the first room R1. The second lid 40 is located in the second room R2. The tank 10 and attachment 20 are moved so that the attachment 20 is positioned in the communication section 101 that connects the first room R1 and the second room R2. The method is characterized by removing the second lid 40 from the chamber 21 and supplying liquid from the tank 10 to the filling machine 102 with the tube 50 connected to the filling machine 102. The tank 10 can remain in the first room R1 while the sterile tube 50 can be connected to the filling machine 102.

[0045] An attachment 20 connected to a tank 10 having a storage section 11 for storing liquid and a supply channel section 12 which is a channel for supplying liquid from the storage section 11 to the outside, A cylindrical chamber 21, A first lid 30 and a second lid 40 that can be attached to both openings of the chamber 21, A tube 50 is housed in the housing section 25 of the chamber 21 and connected to the filling machine 102. Equipped with, The first lid portion 30 is detachable from the supply channel portion 12 and the tube 50, and includes a connecting channel portion 31 that forms a channel through the first lid portion 30. The attachment 20 is characterized by the above. With such an attachment 20, the same effects and advantages as the tank system 1 are achieved. The attachment 20 may be fixedly provided to the tank 10, or it may be detachably provided to the supply flow path section 12.

[0046] <Other Embodiments> Although one embodiment of the present invention has been described above, the present invention is of course not limited to the above-described embodiment, and additions, omissions, substitutions, and other modifications to the configuration are possible without departing from the spirit of the present invention.

[0047] For example, the configuration may not have a manifold 51, and the tube 50 may be directly attached to the connecting flow path section 31. Although the attachment 20 is shown as being detachable from the tank 10, it may also be an integral part of the tank 10. The tank system 1 was used in this example so that the attachment 20 spans the first room R1 and the second room R2, but the system is not limited to this method of use. The tank system 1 may be used in a room with the same cleanliness as the filling machine 102. [Explanation of Symbols]

[0048] R1...First Room, R2...Second Room, 1...Tank System, 10...Tank, 11...Storage Section, 12...Supply Channel Section, 20...Attachment, 21...Chamber, 22...Drain, 23...Drain Valve, 25...Housing Section, 30...First Lid, 31...Connecting Channel Section, 31a...First Connection Section, 31b...Second Connection Section, 32...Bypass Section, 33...Bypass Valve, 40...Second Lid, 50...Tube, 60...CIP / SIP Device, 101...Communication Section, 102...Filling Machine

Claims

1. A tank having a storage section for storing liquid and a supply channel section that constitutes a channel for supplying liquid from the storage section to the outside, A tank system for supplying liquid to an external device, comprising an attachment connected to the supply channel section, The aforementioned attachment is A cylindrical chamber, The chamber comprises a first lid and a second lid that are detachable from both openings, A tube housed inside the chamber and connected to the external device Equipped with, The first lid is detachably attached to the supply channel and the tube, and includes a connecting channel that forms a channel that penetrates the first lid. A tank system characterized by the following features.

2. A tank system according to claim 1, The aforementioned connecting channel section is A first connecting portion protruding from the first lid portion toward the supply channel portion, It comprises a second connecting portion that protrudes from the first lid toward the chamber, A bypass section is provided that branches off from the first connection section, penetrates the first lid section, and communicates with the chamber, The bypass section is provided with a valve that can be opened and closed. A tank system characterized by the following features.

3. A tank system according to claim 1, The attachment is such that the supply channel portion is detachable from the connecting channel portion. A tank system characterized by the following features.

4. A tank system according to claim 1, The tank is movable A tank system characterized by the following features.

5. A tank system according to claim 1, The system includes a CIP / SIP device that supplies cleaning fluid and sterilization fluid for cleaning and sterilizing the tank, the connecting channel section, the inside of the chamber, and the tube. The CIP / SIP device is The tube is placed inside the chamber, The tube is connected to the connecting channel section, The first lid and the second lid are attached to both openings of the chamber. The cleaning fluid is supplied with the connecting channel connected to the supply channel. A tank system characterized by the following features.

6. A tank system according to claim 2, The system includes a CIP / SIP device that supplies cleaning fluid for cleaning and sterilizing the tank, the connecting channel section, the inside of the chamber, and the tube. The CIP / SIP device is The tube is placed inside the chamber, The tube is connected to the connecting channel section, The first lid and the second lid are attached to both openings of the chamber. The aforementioned connecting channel section is connected to the aforementioned supply channel section, With the valve open, the cleaning fluid is supplied. A tank system characterized by the following features.

7. A tank system according to claim 5 or claim 6, After the cleaning and sterilization by the CIP / SIP device is completed, With the second lid removed from the chamber and the tube attached to the external device, Supply of liquid from the tank to the external device A tank system characterized by the following features.

8. A tank system according to claim 5 or claim 6, The tank and the attachment are placed in the first room, which has a relatively low level of cleanliness. The external device is not connected to the tube and is located in a second room with a relatively high level of cleanliness. After cleaning and sterilization are completed by the CIP / SIP device, While maintaining the sterile state of the tank and the attachment, The first lid is located in the first room, The second lid is located in the second room, The system includes a moving mechanism for moving the tank and the attachment so that the attachment is positioned in a communication section connecting the first room and the second room. With the second lid removed from the chamber and the tube connected to the external device, liquid is supplied from the tank to the external device. A tank system characterized by the following features.

9. A liquid transfer method using the tank system described in claim 5 or claim 6, The tank and the attachment are placed in the first room, which has a relatively low level of cleanliness. The external device is not connected to the tube, and is placed in a second room with a relatively high level of cleanliness. After cleaning and sterilization are completed by the CIP / SIP device, While maintaining the sterile state of the tank and the attachment, The first lid is located in the first room, The second lid is located in the second room, The tank and the attachment are moved so that the attachment is positioned in the communication section connecting the first room and the second room. With the second lid removed from the chamber and the tube connected to the external device, the liquid is supplied from the tank to the external device. A method for transferring liquid using a tank system characterized by the following features.

10. An attachment connected to a tank having a storage section for storing liquid and a supply channel section which is a channel for supplying liquid from the storage section to an external device, A cylindrical chamber, The chamber comprises a first lid and a second lid that are detachable from both openings, A tube housed inside the chamber and connected to the external device Equipped with, The first lid is detachably attached to the supply channel and the tube, and includes a connecting channel that forms a channel that penetrates the first lid. An attachment characterized by the following:

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