Cylindrical liquid storage bag

Abstract

The utility model relates to liquid storage bag technical field, concretely relates to a cylindrical liquid storage bag, including liquid storage bag body, the liquid storage bag body is cylindrical, its height and diameter ratio is 0.5 1, the upper end edge and the lower end edge of liquid storage bag body all set up reinforcing ring, the upper end of liquid storage bag body sets up liquid inlet pipeline, gas inlet pipeline and exhaust pipe, the lower end of the lateral wall of liquid storage bag body sets up liquid outlet pipeline, the gas inlet pipeline is used for connecting inert gas source. The lower end of liquid storage bag body lateral wall still sets up sampling pipe, and the one end of sampling pipe away from liquid storage bag body is connected closed joint, the closed joint includes the casing, the casing one end is the connecting pipe of diameter taper, the other end inside of casing sets up sealing plug. The utility model always keeps standing posture when liquid is admitted, and then does not need to keep the posture of the storage bag body by the aid of support frame, can therefore reduce cost. In addition, multiple sampling can be realized, and the use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid storage bag technology, specifically to a cylindrical liquid storage bag. Background Technology

[0002] Liquid storage bags are commonly used containers for storing liquids, including two-dimensional and three-dimensional storage bags. In practical use, to avoid cross-contamination, liquid storage bags are usually designed as disposable bags. The liquid to be stored is filled into the disposable storage bags using filling equipment, and then reused after storage and transportation.

[0003] However, for some liquids to be stored, there are higher requirements for the residual gas content. For example, if the liquid contains substances that are easily oxidized, it is necessary to completely purge the air from the storage bag before adding the liquid to avoid contact between the liquid and the air.

[0004] The evacuation process requires connecting an exhaust pipe to the storage bag. After the internal air is evacuated, the storage bag is compressed into a flat shape. To facilitate liquid filling, a support frame is installed on the outside of the storage bag. The support frame serves two purposes: firstly, it protects the storage bag, and secondly, it prevents the storage bag from tipping over or tilting, which would make liquid filling difficult. However, the installation of the support frame increases costs, and the structure and size of the support frame need to be modified accordingly for different sizes of storage bags. Therefore, it also increases the replacement time and processing costs of the support frame.

[0005] Therefore, it is necessary to provide a cylindrical liquid storage bag that can be independently supported. Utility Model Content

[0006] The purpose of this invention is to provide a cylindrical liquid storage bag to solve the technical problem that the need for a support frame when filling the liquid storage bag in the prior art leads to increased costs.

[0007] Terminology Explanation: Unless otherwise defined, all technical terms in this document have the same meanings as commonly understood by one of ordinary skill in the art to which the subject matter of the claims pertains. Unless otherwise stated, all patents, patent inventions, and publications cited in this document are incorporated herein by reference in their entirety. If multiple definitions exist for terms in this document, the definitions in this chapter shall prevail.

[0008] It should be understood that the above brief description and the following detailed description are exemplary and for illustrative purposes only, and do not limit the subject matter of this utility model in any way. In this utility model, the singular is used in conjunction with the plural unless otherwise specified. It should also be noted that, unless otherwise specified, the use of “or” or “or” means “and / or”. Furthermore, the use of the term “comprising” and other forms such as “including,” “containing,” and “contains” are not limiting.

[0009] To achieve the above objectives, the technical solution of this utility model is as follows: A cylindrical liquid storage bag includes a liquid storage bag body, which is cylindrical with a height-to-diameter ratio of 0.5-1; reinforcing rings are provided on both the upper and lower edges of the liquid storage bag body; a liquid inlet pipe, an air inlet pipe, and an exhaust pipe are provided on the upper end of the liquid storage bag body; and a liquid outlet pipe is provided on the lower end of the side wall of the liquid storage bag body. The air inlet pipe is used to connect to a nitrogen source or an inert gas source, and the air inlet pipe is equipped with a flow stop clamp and a filter. The end of the air inlet pipe away from the liquid storage bag body is equipped with a CPC interface (quick plug interface, Colder Products Company product). The connection between the exhaust pipe and the liquid storage bag body is the inlet, and the end of the exhaust pipe away from the liquid storage bag body is the outlet. A filter and a flow stop clamp are installed on the exhaust pipe in sequence from the inlet to the outlet. A flow stop clamp is provided on the liquid inlet pipe, and a CPC interface is provided at the end of the liquid inlet pipe away from the liquid storage bag body; A flow stop clamp is installed on the liquid outlet pipe, and a CPC interface is installed at the end of the liquid outlet pipe away from the liquid storage bag body.

[0010] Furthermore, an air-permeable filter membrane is also provided between the filter and the inlet.

[0011] Furthermore, an oxygen detection probe is also installed on the exhaust pipe, and the oxygen detection probe is connected to an oxygen detector; the oxygen detection probe is located between the flow stop clamp and the outlet.

[0012] Furthermore, a CPC interface is provided at the outlet.

[0013] Furthermore, a sampling tube is provided at the lower end of the side wall of the liquid storage bag body, a flow stop clamp is provided on the sampling tube, and a closed connector is connected to the end of the sampling tube away from the liquid storage bag body. The sealed joint includes a housing, one end of which is a connecting tube with a gradually decreasing diameter, and the other end of the housing is provided with a sealing plug and a cap. The connecting tube is connected to the sampling tube, and the cap can cover the other end of the housing.

[0014] Furthermore, the inner wall of the end of the housing is provided with multiple annular grooves, and the outer wall of the sealing plug is provided with multiple annular sealing strips. The sealing strips are embedded in the annular grooves, thereby sealing the sealing plug with the housing.

[0015] Furthermore, the sealing plug is a chlorinated butyl rubber plug.

[0016] Furthermore, the cap and the housing are integrally molded by injection molding.

[0017] Furthermore, the liquid storage bag body is made of brown PE material.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The cylindrical liquid storage bag provided by this utility model adopts a short and thick cylindrical design. By setting up an air inlet pipe and an exhaust pipe, it adopts inert gas protection during liquid filling. Before liquid filling, the liquid storage bag is filled with inert gas and automatically stands upright. During liquid filling, the liquid body remains cylindrical due to gravity and the filling of inert gas. Combined with the reinforcing ring design at the upper and lower edges of the cylindrical storage bag body, the storage bag body always maintains an upright posture, thus eliminating the need for a support frame to maintain the posture of the storage bag body and reducing costs.

[0019] In addition, the present invention provides a filter on the exhaust pipe to prevent external air from entering the liquid storage bag and causing liquid contamination; or to prevent the contents of the liquid storage bag from overflowing to the outside and causing external contamination; and to provide a ventilated filter membrane on the exhaust pipe, which allows gas to pass through but not liquid, thus preventing liquid from flowing to the filter and causing the filter to become contaminated and lose its filtering function.

[0020] This invention also includes a sampling tube, one end of which is sealed with a closed connector and a sealing plug is provided inside the closed connector. Multiple samples can be taken through the sealing plug using a syringe. For liquids that require multiple samplings, the sampling tube can be used to achieve multiple samplings, improving ease of use. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the sealed joint of this utility model.

[0023] Explanation of reference numerals in the attached figures: 1. Liquid storage bag body; 2. Reinforcing ring; 3. Liquid inlet pipe; 4. Air inlet pipe; 5. Exhaust pipe; 6. Liquid outlet pipe; 7. Filter; 8. Flow stop clamp; 9. Ventilation filter membrane; 10. Oxygen detector; 11. CPC interface; 12. Sampling tube; 13. Sealing connector; 131. Connecting pipe; 132. Shell; 133. Sealing plug; 134. Cap; 135. Sealing strip. Detailed Implementation

[0024] The technical solution of this utility model will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are not all embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] It should be noted that, unless otherwise specifically stated, the relative arrangement and numerical expressions of the components and steps described in these embodiments should not be construed as limiting the scope of this utility model.

[0026] The following description of exemplary embodiments is merely illustrative and is not intended to limit the present invention or its application or use in any way. Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail herein, but where applicable, such techniques, methods, and apparatus should be considered part of this specification.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] For ease of description, the words "up," "down," "left," and "right" appearing in this utility model only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings. They do not limit the structure and are merely for the purpose of facilitating the description of this utility model and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Terminology Explanation: The terms "installation," "connection," "linking," and "fixing" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction relationship between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0030] This embodiment provides a cylindrical liquid storage bag, such as Figure 1As shown, the device includes a liquid storage bag body 1, which is cylindrical with a height-to-diameter ratio of 0.5-1. Reinforcing rings 2 are provided on both the upper and lower edges of the liquid storage bag body 1. An inlet pipe 3, an air inlet pipe 4, and an exhaust pipe 5 are provided on the upper end of the liquid storage bag body 1. An outlet pipe 6 is provided on the lower end of the side wall of the liquid storage bag body 1. The air inlet pipe 4 is used to connect to a nitrogen source or an inert gas source, and a flow stop clamp 8 and a filter 7 are provided on the air inlet pipe 4. A CPC interface 11 is provided at the end of the air inlet pipe 4 furthest from the liquid storage bag body 1.

[0031] The inert gas sources include: helium, neon, argon, krypton, and xenon.

[0032] Filter 7 is a vent filter made of PTFE material, used to filter gases, but it can block liquids and solids from passing through.

[0033] The connection between the exhaust pipe 5 and the liquid storage bag body 1 is the inlet, and the end of the exhaust pipe 5 away from the liquid storage bag body 1 is the outlet. A filter 7 and a flow stop clamp 8 are sequentially installed on the exhaust pipe 5 from the inlet to the outlet. The filter 7 is a venting filter, meaning it only allows gas to pass through and not solids or liquids. The purpose of the filter 7 is to prevent external impurities from entering the liquid storage bag body 1 and contaminating the liquid; on the other hand, it prevents substances inside the storage bag body from entering the external air or vacuum equipment, thereby contaminating other equipment or the external air.

[0034] Since the filter 7 cannot come into contact with the stored liquid, a venting filter membrane 9 is added between the filter 7 and the inlet. The venting filter membrane 9 is a semi-permeable membrane that can only allow gas to pass through but not liquid. By using the venting filter membrane 9 to block the liquid from passing through, the liquid is prevented from flowing into the filter 7, thus avoiding contamination and failure of the filter 7.

[0035] In addition, as a preferred embodiment, in order to conveniently understand the oxygen content inside the liquid storage bag body 1, an oxygen detection probe is also provided on the exhaust pipe 5, and the oxygen detection probe is connected to the oxygen detector 10; the oxygen detection probe is located between the flow stop clamp 8 and the outlet.

[0036] A CPC interface 11 is provided at the outlet of the exhaust pipe 5, which can be used to quickly connect other devices.

[0037] A flow stop clamp 8 is provided on the inlet pipe 3, and a CPC interface 11 is provided at the end of the inlet pipe 3 away from the liquid storage bag body 1; a flow stop clamp 8 is provided on the outlet pipe 6, and a CPC interface 11 is provided at the end of the outlet pipe 6 away from the liquid storage bag body 1.

[0038] To accommodate stability testing, a sampling tube 12 is provided at the lower end of the side wall of the liquid storage bag body 1. The total length of the sampling tube 12 is kept as short as possible, sufficient to accommodate the installation of the flow stop clamp and the connection of the sealing connector. A flow stop clamp 8 is provided on the sampling tube 12, and the end of the sampling tube 12 furthest from the liquid storage bag body 1 is connected to the sealing connector 13; Figure 2 As shown, the sealed connector 13 includes a housing 132, one end of which is a connecting tube 131 with a gradually decreasing diameter, and the other end of the housing 132 is provided with a sealing plug 133, and the other end of the housing 132 is connected to a cap 134; the connecting tube 131 is connected to the sampling tube 12, and the cap 134 can cover the other end of the housing 132.

[0039] The inner wall of the end of the housing 132 is provided with multiple annular grooves, and the outer wall of the sealing plug 133 is provided with multiple annular sealing strips 135. The sealing strips 135 are embedded in the annular grooves, thereby sealing the sealing plug 133 with the housing 132. The sealing plug 133 is a chlorinated butyl rubber stopper.

[0040] Since the stability test requires multiple samplings, a sealed connector 13 is set up so that a syringe with a fine needle can be used to pierce the sealing plug 133 and draw liquid with the syringe to achieve sampling.

[0041] The cap 134 and the housing 132 are integrally formed by injection molding. One side of the cap 134 is connected to the housing 132. When the cap 134 is opened to take a sample, the cap 134 is connected to the housing 132, making the cap 134 less likely to be lost.

[0042] In addition, as a preferred embodiment, for some photosensitive liquids, the liquid storage bag body 1 can be made of brown PE material to avoid the influence of light on the liquid.

[0043] The working principle of the cylindrical liquid storage bag provided by this utility model is as follows: Before liquid is introduced, the liquid storage bag is in a folded state. At this time, due to the support of the reinforcing ring 2, only the side wall of the liquid storage bag body 1 is folded, that is, the upper and lower ends of the liquid storage bag body 1 overlap, while the side wall of the liquid storage bag body 1 is folded inward or in other directions.

[0044] When liquid needs to be stored, although the liquid storage bag body 1 is folded, air still exists inside. First, close the flow-stop clamps 8 on the liquid inlet pipe 3, liquid outlet pipe 6, sampling pipe 12, and air inlet pipe 4. Then, connect the vacuum pump to the exhaust pipe 5 of the liquid storage bag body 1 to extract the internal air. The flow-stop clamp 8 can be used to close the exhaust pipe 5 and stop the vacuuming. As a preferred embodiment, during the vacuuming process, the oxygen detector 10 can monitor in real time whether there is residual air inside the storage bag body. When the oxygen content detected by the oxygen detector 10 is lower than the set threshold, the flow-stop clamp 8 is used to close the exhaust pipe 5 and stop the vacuuming.

[0045] After completing the vacuuming operation, connect the air inlet pipe 4 to the inert gas source, open the flow stop clamp 8 on the air inlet pipe 4, fill the storage bag body with inert gas, make the storage bag body stand up, and close the flow stop clamp 8 on the air inlet pipe 4.

[0046] Then begin liquid filling. Open the stop clamp 8 on the liquid inlet pipe 3, which connects to the liquid inlet system. Simultaneously, open the stop clamp 8 on the exhaust pipe 5. If inert gas recirculation is required, the exhaust pipe 5 can be connected to an inert gas collection container. As the liquid enters the storage bag, it expels some of the inert gas. However, due to the presence of the liquid, filling material, and inert gas, the storage bag remains upright.

[0047] After the liquid is introduced, close the flow stop clamp 8 on the exhaust pipe 5 and the flow stop clamp 8 on the liquid inlet pipe 3.

[0048] If multiple samplings are required during liquid storage (for example, to test the stability of the liquid stored in this storage bag), the flow stop clamp 8 on the sampling tube 12 can be opened each time a sample is taken, and the cap 134 of the sealing connector 13 can be opened at the same time. A syringe with a fine needle (for example, a needle diameter of less than 0.5 mm) can be used to pierce the sealing plug 133, and the liquid inside the sampling tube 12 can be drawn out by the syringe to achieve sampling.

[0049] After sampling, simply pull out the needle. The chlorinated butyl rubber sealing plug 133 can be punctured multiple times and still maintain a sealed state. Therefore, it can meet the needs of multiple sampling such as stability analysis. After each sampling, the sealing joint is covered with the cap 134 and the flow stop clamp 8 on the sampling tube 12 is closed until the next sampling.

[0050] To remove all the liquid from the storage bag, open the stop clamp 8 on the outlet pipe 6. The outlet pipe 6 is connected to the liquid storage container, and the liquid flows out into the storage container by gravity.

[0051] The above specific embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A cylindrical liquid storage bag, comprising a liquid storage bag body, characterized in that, The liquid storage bag body is cylindrical, with a height-to-diameter ratio of 0.5-1; reinforcing rings are provided on both the upper and lower edges of the liquid storage bag body; an inlet pipe, an air inlet pipe, and an exhaust pipe are provided on the upper end of the liquid storage bag body; and an outlet pipe is provided on the lower end of the side wall of the liquid storage bag body. The air inlet pipe is used to connect to a nitrogen source or an inert gas source, and the air inlet pipe is equipped with a flow stop clamp and a filter. A quick-connect interface is provided at the end of the air inlet pipe away from the liquid storage bag body. The connection between the exhaust pipe and the liquid storage bag body is the inlet, and the end of the exhaust pipe away from the liquid storage bag body is the outlet. A filter and a flow stop clamp are installed on the exhaust pipe in sequence from the inlet to the outlet. A flow stop clamp is provided on the liquid inlet pipe, and a quick-connect interface is provided at the end of the liquid inlet pipe away from the liquid storage bag body; A flow stop clamp is provided on the liquid outlet pipe, and a quick-connect interface is provided at the end of the liquid outlet pipe away from the liquid storage bag body.

2. The cylindrical liquid storage bag according to claim 1, characterized in that, An air-permeable filter membrane is also installed between the filter and the inlet.

3. The cylindrical liquid storage bag according to claim 2, characterized in that, An oxygen detection probe is also installed on the exhaust pipe, and the oxygen detection probe is connected to an oxygen detector; the oxygen detection probe is located between the flow stop clamp and the outlet. A quick-plug interface is provided at the outlet.

4. The cylindrical liquid storage bag according to claim 1, characterized in that, A sampling tube is also provided at the lower end of the side wall of the liquid storage bag body. A flow stop clamp is provided on the sampling tube, and a closed connector is connected to the end of the sampling tube away from the liquid storage bag body. The sealed joint includes a housing, one end of which is a connecting tube with a gradually decreasing diameter, and the other end of the housing is provided with a sealing plug and a cap. The connecting tube is connected to the sampling tube, and the cap can cover the other end of the housing.

5. The cylindrical liquid storage bag according to claim 4, characterized in that, The inner wall of the end of the housing is provided with multiple annular grooves, and the outer wall of the sealing plug is provided with multiple annular sealing strips. The sealing strips are embedded in the annular grooves, thereby sealing the sealing plug with the housing.

6. The cylindrical liquid storage bag according to claim 4, characterized in that, The sealing plug is a chlorinated butyl rubber plug.

7. The cylindrical liquid storage bag according to claim 4, characterized in that, The cap and the housing are integrally formed by injection molding.

8. The cylindrical liquid storage bag according to claim 1, characterized in that, The liquid storage bag body is made of brown PE material.

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